• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    POLYURETHANE VIBRATORY SCREEN. The present invention relates to a molded polyurethane vibrating screen that includes a body provided with opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, first members extending between the lateral edge portions and the second members extending between the lower edge portion and the upper edge portion, third members substantially parallel and extending transversely between the lateral edge portions and provided with multiple first members therebetween, the fourth members substantially oval and extending transversely between the lower edge portion and the upper edge portion and having multiple second members between them, reinforcement members integrally molded with the third and fourth members.
    公开号:BR112012026763B1
    申请号:R112012026763-9
    申请日:2011-02-07
    公开日:2020-06-23
    发明作者:Anthony J. Lipa；Anthony J Lipa；James R. Colgrove；James R Colgrove
    申请人:Derrick Corporation；
    IPC主号:
    专利说明:

    Cross Reference to Related Orders
    The present invention claims the priority of Serial North American Patent Application No. 12 / 763,046, filed on April 19, 2010, the description of which is fully incorporated herein by reference. Field of the Invention
    The present invention relates to an improved molded polyurethane fabric. Background
    Reinforced molded polyurethane screens are known in the art. However, in the past the dividing strips between the openings were relatively large, thereby making the open area of the screen an undesirably low percentage of its surface, thereby successively rendering the screen relatively inefficient.
    The present invention is an improvement on U.S. Patent Nos. 4,819,809 and 4,857,176, the descriptions of which are incorporated herein by reference. The present invention provides improved screens with relatively high percentage and very efficient open screen areas. summary
    In accordance with an exemplary embodiment of the present invention, a vibrating screen includes: a molded flexible polyurethane cup with substantially parallel edge portions at opposite ends of the body, a lower edge portion substantially perpendicular to the lateral edge portions, an edge portion upper substantially perpendicular to the lateral edge portions and opposite to the lower edge portion, an upper surface, a lower surface, first and second members forming mesh openings and third and fourth members. The first members are understood between the lateral edge portions. The second members extend between the lower edge portion and the upper edge portion. The third and fourth members can be a greater thickness than the first and second members. The third members are substantially parallel and extend transversely between the lateral edge portions and are provided with multiple first members between them. The fourth members are substantially parallel and extend transversely between the lower edge portion and the upper edge portion and are provided with multiple second members between them. The reinforcement members are integrally molded with the third and fourth members.
    The exemplary embodiments of the present invention are described in more detail below with reference to the attached figures. Brief Description of Drawings
    a figura 1A é uma vista superior isométrica da tela ilustrada na figura 1; a figura 1B é uma vista inferior isomeria da tela ilustrada na figu¬ra 1; a figura 2 é uma vista fragmentária em corte transversal tomada substancialmente ao longo da linha 2-2 da figura 1; a figura 3 é uma vista fragmentária em corte transversal tomada substancialmente ao longo da linha 3-3 da figura 1; a figura 3A é uma vista ampliada fragmentária em corte trans¬versal de uma porção da tela ilustrada na figura 3; a figura 4 é uma vista plana de uma porção da tela ilustrada na figura 1; a figura 4A é uma vista plana ampliada de uma porção da tela i- lustrada na figura 4. a figura 5 é uma vista fragmentária em corte transversal tomada substancialmente ao longo da linha 5-5 da figura 1; a figura 5A uma vista ampliada fragmentária em corte transver¬sal de uma porção da tela ilustrada na figura 5; a figura 6 uma vista ampliada fragmentária em corte transversal similar à vista tomada substancialmente ao longo da linha 5-5 da figura 5, mas ilustrando apenas uma configuração em corte transversal de um forma¬to modificado dos primeiros membros com membros de reforço; a figura 7 é uma vista similar à figura 6, mas ilustrando primeiros membros sem membros de reforço; a figura 8 é uma vista fragmentária em corte transversal ilustran¬do a maneira na qual a tela aperfeiçoada da figura 1 é montada em uma máquina de triagem vibratória; e a figura 9 é uma vista isomérica ampliada de uma porção de uma tela vibratória de acordo com uma modalidade exemplificative da pre¬sente invenção com membros de reforço integrantes com os primeiros e se¬gundos membros formando aberturas de tela. Figure 1 is a fragmentary plan view of a vibrating screen according to an exemplary embodiment of the present invention; figure 1A is an isometric top view of the screen shown in figure 1; figure 1B is an isomeric bottom view of the screen shown in figure 1; figure 2 is a fragmentary cross-sectional view taken substantially along line 2-2 of figure 1; figure 3 is a fragmentary cross-sectional view taken substantially along line 3-3 of figure 1; Figure 3A is a fragmentary, enlarged, cross-sectional view of a portion of the screen shown in Figure 3; figure 4 is a plan view of a portion of the screen shown in figure 1; Figure 4A is an enlarged plan view of a portion of the screen shown in Figure 4. figure 5 is a fragmentary cross-sectional view taken substantially along line 5-5 of figure 1; Figure 5A is an enlarged fragmentary view in cross-section of a portion of the screen shown in Figure 5; Figure 6 is an enlarged fragmentary cross-sectional view similar to the view taken substantially along line 5-5 of Figure 5, but illustrating only a cross-sectional configuration of a modified shape of the first members with reinforcing members; figure 7 is a view similar to figure 6, but illustrating first members without reinforcement members; figure 8 is a fragmentary cross-sectional view illustrating the manner in which the improved screen of figure 1 is mounted on a vibrating screening machine; and figure 9 is an enlarged isomeric view of a portion of a vibrating screen according to an exemplary embodiment of the present invention with reinforcing members integral with the first and second members forming screen openings.
    Detailed Description
    Similar reference characters indicate similar parts in the various figures.
    According to an exemplary embodiment of the present invention, a vibrating screen 10 includes a molded polyurethane body 12 with perforated side edge portions 14, 16. The side edge portions 14, 16 can be shaped in a U and may include a fused structural member, such as an angle 15 shown in figure 2. Angle 15 can extend the full length of side edge portions 14, 16. Side edge portions 14, 16 can be configured to mount the vibrating screen 10 on a vibrating screening machine, as is well known. The body 12 also includes a lower edge portion 18 and an upper edge portion 20 which, in combination with the side edge portions 14, 16 define an outer edge of the web 10. Body 12 also includes an upper surface 22 and a bottom surface 24 and includes first members 101 and second members 102 that form the web openings 26. Body 12 also includes third members 293, fourth members 204, fifth members 305 and sixth members 306. Body 12 can include various configurations third party members 203, fourth member 204, fifth member 305, and / or sixth member 306. Third party 203, fourth member 204, fifth member 305 and / or sixth member 306 may or may not include reinforcement members 50 and are generally configured to support screen openings 26 formed by the first and second members 101, 102.
    The first and second members 101, 102 form a first integrally molded grid structure 100 that defines the screen openings 26. The third and fourth member 203, 204 form a second integrally molded grid structure 200. The fifth and sixth members Members form a third integrally molded grid structure300. As illustrated in the exemplary embodiment described in figures 1, 2, 3, 4 and 5, grid structures 200 and 300 include integrally molded bi-directional reinforcement members that were support grids within the members. Due to the properties of the reinforcement members 50, also discussed here, and their configuration in a bidirectional grid structure, the members in which the reinforcement members 50 are embedded are relatively small in size and provide an increased open screening area. The grid structures provide screen resistance, support for openings 26 during loading and significantly increase the open screen area. Although the second and third grid structures are discussed here, additional grid structure can be provided.
    The first members 101 can be substantially parallel to each other and extend transversely between the lateral edge portions 14, 16. The second members 102 can be substantially parallel to each other and extend transversely between the lower edge portion 18 and the upper edge portion 20. The second members 102 may be thicker than the first members to provide additional structural support to the web openings 26.
    The first members 101 and / or second members 102 may include reinforcement members 50 and may or may not be supported by additional support members or support grid structures. See, for example, figures 6 and 9. As illustrated in figure 9, the body 12 is provided with first and second members 101, 102 with additional reinforcement members 50 integrally molded with them. Such configurations can be beneficial for screens that require screening applications with larger screen openings.
    As shown in figure 4, the screen openings 26 are elongated with an extension dimension along the sides and between the ends of them greater than the dimensions of the width between the sides and their extension dimensions that extend in a transverse direction to the side edge portions 14, 16. The screen openings 26 can be around 044 mm to about 4 mm wide (that is, between the inner surfaces of the first adjacent members 101) and about from .088 mm to about 60 mm in length (i.e. between the inner surfaces and the second adjacent members 102). The screen openings 26 can have different shapes including a generally square shape. The general dimensions of screen 10 can be around 1.2 meters, 1.6 meters, or any other desired size. All dimensions mentioned here are exemplary and not limiting.
    The screen openings 26 can diverge downwardly between the upper surface 22 and the lower surface 24 and the first members 101 can be substantially in the shape of inverted trapezoids. See, for example, figures 6 and 7. This general shape of the first members 101 prevents glare on screens 10. As shown in figure 6, the first members 101 include reinforcement members 50. As shown in figure 7, the first 101 members do not include 50 reinforcement members.
    The screens with the various screen opening sizes and support configurations described here have relatively large open screening areas. Open sorting areas can range, for example, from around 40 percent to about 46 percent. As also commented on here, relatively large open screening areas can be obtained by placing bidirectional reinforcement members 50 on cross members (for example, members 203, 204) as shown in the various modalities of this application. The reinforcement members significantly reduced the size of both bidirectional support cross members and allow for thinner screen members, 101, 102 forming the screen openings 26. The support members grid work and the reinforcement members provide structurally sound screens that maintain the necessary screen openings during vibration operation.
    The third and fourth limbs 203, 204 may have a greater thickness than the first and second members 101, 102 and may have a portion 210 that extends down below the lower surface 24 of the body 12. The greater thickness and the the portion extending downwards can provide additional structural support to the first and second members 101, 102. As illustrated in figure 1B, the portion 210 can be substantially triangular in cross section with vertices projecting away from the lower surface 24 of the body 12. The third members 203 can be substantially parallel and extend transversely between the lateral edge portions 14, 16 and can have multiple first members 101 between them. The fourth limbs 204 can be substantially parallel and extend transversely between the lower edge portion 18 and the upper edge portion 20 and have multiple second members 101 between them. Reinforcement members 50 can be fully molded with third and fourth members 203, 204. See, for example, figures 3A, 5A. the third and fourth member 203, 204 can be configured to have a nominal thickness by including reinforcement members 50, while providing the structural support necessary to maintain the screen openings 26 formed by the first and second members 101, 102 during applications vibratory screening. The bidirectional support system provided by reinforced third and fourth members 203, 204 greatly reduces the thickness of the support members and provides increased open screening area and overall screen efficiencies.
    The fifth members 305 and the sixth members 306 may be included in the body 12. The fifth and sixth members may be thicker than the third and fourth members and may have a portion 310 that extends downwardly away from the bottom surface of the body. The greater thickness and the downwardly extending portion may provide additional structural support for the first and second members 101, 102. The sixth members 306 may include a portion 320 that extends upwardly away from the upper body surface. The portion 320 can be substantially triangular in cross section with the vertices projecting away from the lower surface 24 of the body 12. The sixth members 306 are illustrated in figure 12 with the portions 320 extending away from the surface upper body 12 and acting as flow guides. The fourth member 305 can be substantially parallel and extend transversely between the side edge portions 14, 16 and have multiple third members 203 between them. The sixth members 306 can be substantially parallel and extend between the lower edge portion 18 and the upper edge portion 20 and have multiple fourth members 204 between them. Reinforcement members 50 can be molded integrally with the fifth and sixth members 305, 306. The fifth and sixth members 305, 306 can be provided for additional support for the screen openings 26 and can be configured to have a minimum thickness through the inclusion of reinforcement members 50, while providing the necessary structural support to maintain the screen openings 26 during vibratory screening applications. The bidirectional support system provided by the fifth and sixth members 305, 306 greatly reduces the thickness of the support members and provides an increased screening area and overall screen efficiencies.
    Figure 1A illustrates an exemplary embodiment of the present invention having first and second members 101, 102 forming mesh openings 26 and members 203, 204 forming a support grid structure for openings 26. As illustrated in figure 1A, the screen 10 does not include fifth and sixth members 305, 306.
    In use, the vibrating screen 10 is mounted on a vibrating screening machine 30 (figure 8) in a well-known manner. Specifically, it is mounted on the screen cover support 31 which is mounted on the machine's (unmounted) frame. The fabric cover support 31 includes substantially parallel frame members 32 secured to each other by substantially parallel spaced frame members (not shown). There are a plurality of joists 33 that extend transversely between the members of the transverse structure that assembles channel rubbers 34. Mounted on the parallel structure members 32 are the channel-shaped traction bars 35 that are received within the portions side edges 14, 16. The extraction screws 37 separate the bars 35 to thereby tension the vibrating screen 10 with the required force. The preceding type of screen covering support is well known in the art. Screen 10 can be mounted on other vibrating screening machines and side edge portions 14, 16 can be configured in other formats to accommodate different vibrating screening machines.
    The reinforcement members 50 as described herein can be an aramid fiber (or individual filaments thereof), a naturally occurring fiber or other materials with relatively large tension forces with relatively large cross-sectional areas. When an aramid fiber is used as a reinforcement fiber 50 it may be the aramid fibers that are obtained commercially under the brand KEVLAR from Dupont Company and also identified by the name KEVLAR 29. Reinforcement members 50 can also be at least one of the fibers of aramid that are obtained commercially under the brands TWARON, SULFERON, TEIJINCONEX and TECHNORA of Teijin Company. In addition, aramid fibers can be of several twisted threads or woven in a way that acts as nature of wicks to absorb the polyurethane that is mol ¬ given around them to thereby provide a very good connection with them. The various twisted or woven fibers can be from 55 denier to about 2840 denier, preferably approximately 1500 denier. The flexibility of the aramid fibers provides a flexible reinforcement system for the molded polyurethane that is able to return to its original molded shape after the necessary inclination and bending that occur during handling and installation in the vibrating frame member 32. In addition, the flexible aramid fibers allow the flexible polyurethane fabric to be flexed without damaging the arched and tensioned condition as shown in figure 8. Reinforcement members 50 can be tensioned before molding the polyurethane around them. Various configurations of reinforcement members 50 can be provided in one of these first, second, third, fourth, fifth and sixth members 101, 102, 203, 204, 305, 306. Each member can include none, one or more members of reinforcement 50 and reinforcement members 50 can be of different sizes and materials. Reinforcement members 50 can be located in the lower halves so as not to be exposed relatively early due to wear on the upper surface of the fabric.
    During operation, the first 101 members will vibrate to increase the screening action. In this regard, it should be noted that since the first members 101 are flexible and relatively thin they will provide a relatively high amplitude of desirable vibration. The reason that the first members 101 are made relatively thin, creating the screen openings described here, is due to a support frame of bidirectional support members and reinforcement members, as described here, with relatively large tension forces with cut areas relatively small cross-section. The manufacture of the support members and the first relatively thin members 101 results in the canvas with a higher percentage of open area, which successively increases its capacity.
    In accordance with an exemplary embodiment of the present invention, a vibrating screen 10 includes a flexible molded polyurethane cup 12 with substantially parallel side edge portions 14, 16 at opposite ends of the body 12, a lower edge portion 18 substantially. perpendicular to the side edge portions 14, 16, a top edge portion 20 substantially perpendicular to the side edge portions 14, 16 and opposite the bottom edge portions 18, an upper surface 22, a lower surface 24, first and second members 101, 102 forming the screening openings 26, the first members 101 extending between the lateral edge portions 14, 16 and the second members 102 extending between the lower edge portion 18 and the portion of upper edge 20. The body also includes third and fourth limbs 203, 204. Third and fourth limbs 203 and 204 are thicker than the first and second limbs 101, 102. The third the members 203 are substantially parallel and extend transversely between the lateral edge portions 14, 16 and are provided with multiple first members 101 therebetween. The fourth limbs 204 are substantially parallel and extend transversely between the lower edge portion 18 and the upper edge portion 20 and are provided with multiple second members 102 between them. Reinforcement members 50 are integrally molded with third and fourth members 203, 204. The body also includes fifth and sixth members 305, 306. The fifth members 305 are substantially parallel and extend transversely between the lateral edge portions 14 , 16. The sixth members 306 are substantially parallel and extend transversely between the lower edge portion 18 and the upper edge portion 20. The fifth and sixth members are thicker than the third and fourth members and include members of reinforcement 50 completely housed with them. Vibrating screens according to this configuration can have open sorting areas greater than forty percent and mesh sizes of approximately 375 mesh to approximately 400 meshes. As an example, the tested screens with the aforementioned configuration include a screen of mesh size 43, a screen of mesh size 140 and a screen of mesh size 210. Each of these screens had screening areas g approximately 40 percent to approximately 46 percent. Such large screening areas for such fine mesh sizes are achieved through a thin and relatively strong grid structure created by the third, fourth, fifth and sixth members, 203, 204, 305, 306 and integrally molded reinforcement members with them. In the exemplary modality and examples mentioned above, the size of each grid unit formed by the intersection of the third and fourth member 203, 204, is approximately 1 "by" 1. Generally, the grid units can be larger for screens with openings of Larger screens and grid units are smaller for screens with smaller screen openings. This principle can generally be applied to each exemplary mode commented here. The grid units are also provided with a generally rectangular shape or any other shape suitable to support the screen openings.
    According to an exemplary embodiment of the present invention, a method for making a vibrating screen includes: creating a mold configured to manufacture the vibrating screen, the vibrating screening having a flexible molded polyurethane body; installing reinforcement members in the mold, the structural members configured to be integrally molded with the body; fill the mold with polyurethane; and forming the vibrating screen it has: lateral edge portions substantially parallel at opposite ends of the body, a lower edge portion substantially perpendicular to the lateral edge portions, an upper edge portion substantially perpendicular to the edge portions lateral and opposite the lower edge portion, an upper surface, a lower surface, first and second members forming the sorting openings, the first members extending between the lateral edge portions and the second members extending between the lower edge portion and upper edge portion, third and fourth members having a thickness greater than the first and second members, the third members substantially parallel and extending transversely between the lateral edge portions and having the first multiple members between them, the fourth members substantially parallel and extending transversely between the lower edge portion upper and upper edge portion and having multiple second members between them, reinforcement members molded integrally with the third and fourth members.
    Although the preferred embodiments of the present invention have been described, it should be noted that it is not limited to them, but may be incorporated in another way within the scope of the following claims.
    权利要求:
    Claims (50)
    [0001]
    Vibrating screen (10) characterized by comprising: a flexible molded polyurethane body (12) having lateral edge portions (14, 16) substantially parallel at opposite ends of the body (12), a lower edge portion (18) disposed transversely between the side edge portions (14, 16), a top edge portion (20) disposed between the side edge portions (14, 16) and substantially parallel and opposite to the bottom end portion (18), an upper surface (22 ), a lower surface (24), a first integrally molded grid structure (100), a second integrally molded grid structure (200), a third integrally molded grid structure (300) and mesh openings (26), in whereas the first grid structure (100) includes first and second members (101, 102) forming the web openings (26), the first members (101) substantially parallel and extending transversely between the lateral edge portions (14, 16 ) it's the s second members (102) substantially parallel and extending transversely between the lower edge portion (18) and the upper edge portion (20), wherein the second grid structure (200) includes third and fourth members (203, 204 ), the third and fourth members (203, 204) having a thickness greater than the first and second members (101, 102) and having a portion that extends down below the lower surface (24) of the body, the third members (203) substantially parallel and extending transversely between the lateral edge portions (14, 16) and having multiple first members (101) between them, the fourth members (204) substantially parallel and extending transversely between the lower edge portion (24) and the upper edge portion (20) and having multiple second members (102) between them, the first reinforcement members (50) integrally molded with the third and fourth members (203, 204), wherein the third gr structure ade (300) includes fifth and sixth members (305, 306), the fifth and sixth members (305, 306) having a greater thickness than the third and fourth members (203, 204) and having a downwardly extending portion away from the lower surface (24) of the body (12), the fifth members (305) substantially parallel and extending transversely between the lateral edge portions (14, 16) and having multiple third members (203) between them, the sixth members (306) substantially parallel and extending transversely between the lower edge portion (24) and the upper edge portion (20) and having multiple fourth members (204) between them, the second reinforcement members (50) integrally molded with the fifth and sixth members (305, 306).
    [0002]
    Vibrating screen, according to claim 1, characterized by the fact that the openings (26) are around 0.044 mm to about 4 mm between the internal surfaces of the first members (101) and about 0.088 to around 60 mm between the inner surfaces of the second members (102).
    [0003]
    Vibrating screen according to claim 1, characterized in that at least one of the first and second reinforcing members (50) is at least one of a naturally occurring aramid fiber and fiber.
    [0004]
    Vibrating screen according to claim 3, characterized by the fact that at least one of the first and second reinforcement members (50) is an aramid fiber that is at least one of a multiple twisted yarn and a woven multiple yarn and that polyurethane impregnates the multiple yarn that forms a bond between the first member and the fiber therein and a bond between the second member and the fiber therein.
    [0005]
    Vibrating screen, characterized by comprising: a flexible molded polyurethane body (12) having lateral edge portions (14, 16) substantially parallel at opposite ends of the body (12), a lower edge portion (18) substantially perpendicular to the portions of side edges (14, 16), a top edge portion (20) substantially perpendicular to the side edge portions (14, 16) and opposite the bottom edge portion (18), an upper surface (22), a lower surface ( 24), first and second members (101, 102) forming mesh openings (26), the first members (101) extending between the side edge portions (14, 16) and the second members (102) extending between the lower edge portion (18) and the upper edge portion (20), third and fourth members (203, 204) having a thickness greater than the first and second members (101, 102), the third members (203) substantially parallel and extending transversely between the portions lateral edge sections (14, 16) and having multiple first members (101) between them, the fourth members (204) substantially parallel and extending transversely between the lower edge portion (18) and the upper edge portion (20 ) and having multiple second members (102) between them, the first reinforcement members (50) integrally molded with the third and fourth members (203, 204).
    [0006]
    Vibrating screen according to claim 5, characterized by the fact that the first and second reinforcement members (50) are of different sizes.
    [0007]
    Vibrating screen according to claim 5, characterized by the fact that the second members (102) are provided with a greater thickness than the first members (101).
    [0008]
    Vibrating screen according to claim 5, characterized by the fact that the openings (26) are about 0.044 mm to about 4 mm between the inner surfaces of the first members (101) and about 0.088 mm to about 60 mm between the internal surfaces of the second members (102).
    [0009]
    Vibrating screen, according to claim 5, characterized by the fact that the lateral edge portions (14, 16) are formed in a U-shaped configuration.
    [0010]
    Vibrating screen according to claim 5, characterized by the fact that the screen openings (26) deviate downwards between the upper surface (22) and the lower surface (24).
    [0011]
    Vibrating screen according to claim 5, characterized by the fact that the first members (101) are substantially in the form of inverted trapezoids.
    [0012]
    Vibrating screen according to claim 5, characterized by the fact that the first reinforcing members (50) are at least one of an aramid fiber and a natural fiber.
    [0013]
    Vibrating screen according to claim 12, characterized by the fact that the first reinforcing member (50) is an aramid fiber that is at least one of a multiple twisted yarn and a multiple woven yarn and in which the polyurethane impregnates the multiple yarn that forms a connection between the first member and the fiber therein and a connection between the second member and the fiber therein.
    [0014]
    Vibrating screen according to claim 12, characterized by the fact that the reinforcing members (50) are an aramid fiber that is at least one twisted multiple yarn and one woven multiple yarn, wherein the fibers have about 55 denier at about 2840 denier.
    [0015]
    Vibrating screen according to claim 5, characterized by the fact that the third and fourth members (203, 204) are provided with a downwardly extending portion away from the lower surface (24) of the body (12).
    [0016]
    Vibrating screen according to claim 5, characterized in that the lateral edge portions (14, 16) include a molten member.
    [0017]
    Vibrating screen according to claim 5, characterized by the fact that the vibrating screen (10) has an open screen area greater than forty percent.
    [0018]
    Vibrating screen according to claim 5, characterized in that it additionally comprises fifth and sixth members (305, 306), the fifth members (305) substantially parallel and extending transversely between the lateral edge portions (14, 16) and the sixth members (306) substantially parallel and extending transversely between the lower edge portion (18) and the upper edge portion (20).
    [0019]
    Vibrating screen according to claim 18, characterized by the fact that at least one of the fifth and sixth members (305, 306) is thicker than at least one of the third and fourth members (203, 204).
    [0020]
    Vibrating screen according to claim 18, characterized in that it additionally comprises a second reinforcement member (50) integrally molded with the fifth and sixth members (305, 306).
    [0021]
    Vibrating screen according to claim 18, characterized by the fact that the second reinforcing members (50) are at least one of an aramid fiber and a natural fiber.
    [0022]
    Vibrating screen according to claim 21, characterized by the fact that at least one of the first and second reinforcing members is an aramid fiber which is at least one of a multiple twisted yarn and a multiple woven yarn and in which the polyurethane impregnates the multiple thread that forms a link between the first member and the fiber in it and a link between the second member and the fiber in it.
    [0023]
    Vibrating screen according to claim 18, characterized by the fact that at least one of the fifth and sixth members (305, 306) has a portion that extends downwards away from the lower surface (24) of the body (12) .
    [0024]
    Vibrating screen, according to claim 18, characterized by the fact that the sixth members (306) are provided with a portion that extends upwards from the upper surface (22) of the body (12).
    [0025]
    Vibrating screen according to claim 24, characterized by the fact that the portion that extends upwards is substantially triangular in cross section with the vertices that protrude away from the lower surface (24) of the body (12).
    [0026]
    Vibrating screen (10), characterized by comprising: a body (12) of flexible molded polyurethane, screen openings in the body (12), flexible first members (101) substantially parallel defining opposite sides of the screen openings (26), second members (102) substantially parallel flexible defining opposite sides of the screen openings (26), the first members (101) substantially perpendicular to the second members (102), the third members (203) substantially parallel and having multiple first members (101) between the same, fourth member (204) substantially parallel and having multiple second members (102) between them, reinforcement members (50) integrally molded with each of the third parties (203) and fourth members (204), side edge portions (14 , 16) substantially parallel on opposite sides of the body (12) between which the third members (203) and reinforcement members (50) extend therein, the first and second end portions substantially parallel at opposite ends of the body between which the fourth members (204) and the reinforcing members (50) extend therein, the side portions (14, 16) substantially perpendicular to the end portions.
    [0027]
    Vibrating screen according to claim 26, characterized by the fact that the second members are provided with a greater thickness than the first members (101).
    [0028]
    Vibrating screen according to claim 26, characterized by the fact that the openings (26) are about 0.044 mm to about 4 mm between the inner surfaces of the first members (101) and about 0.088 mm to about 60 mm between the inner surfaces and the second members (102).
    [0029]
    Vibrating screen according to claim 26, characterized by the fact that the first reinforcing members (50) are at least one of an aramid fiber and a natural fiber.
    [0030]
    Vibrating screen according to claim 29, characterized in that the first reinforcing member (50) is an aramid fiber that is at least one of a multiple twisted yarn and a multiple woven yarn and in which the polyurethane impregnates the multiple yarn that forms the connection between the first member and the fiber therein and a connection between the second member and the fiber therein.
    [0031]
    Vibrating screen according to claim 26, characterized by the fact that the openings (26) are elongated with a greater extension dimension along the sides and between the ends of them than the width dimensions between the sides and their dimensions extending in a direction transverse to the lateral edge portions.
    [0032]
    Vibrating screen according to claim 26, characterized in that it additionally comprises large integrally molded ribs and small first ribs extending transversely to the first members (101), the large ribs provided with portions extending upwards on the upper surface (22) ) and second small integrally molded ribs extending transversely to the second members (102), the first and second small ribs forming a grid-shaped support structure that supports the openings (26).
    [0033]
    Vibrating screen according to claim 26, characterized by the fact that the reinforcing members (50) in at least one of the third and fourth members (203, 204) is a single aramid fiber.
    [0034]
    Vibrating screen according to claim 26, characterized by the fact that the screen opening (26) deviates downwards between the upper surface (22) and the lower surface (24).
    [0035]
    Vibrating screen (10), characterized by comprising: a flexible molded polyurethane body (12) having lateral edge portions (14, 16) substantially parallel at opposite ends of the body (12), a lower edge portion (18) substantially perpendicular to the side edge portions (14, 16), a top edge portion (20) substantially perpendicular to the side edge portions (14, 16) and opposite the bottom edge portion (18), an upper surface (22), a lower surface (24), first and second members (101, 102) forming screen openings (26), the first members (101) extending between the side edge portions (14, 16) and the second members (102) if extending between the lower edge portion (18) and the upper edge portion (20), the reinforcement members (50) integrally molded with the first and second members (101, 102).
    [0036]
    Method for making a vibrating screen (10) characterized by the fact that it comprises the steps of: creating a mold configured to manufacture the vibrating screen (10), the vibrating screen having a flexible molded polyurethane body (12); installing reinforcement members in the mold, the structural members configured to be integrally molded with the body; filling the mold with polyurethane, and forming the vibrating screen, the vibrating screen (10) having lateral edge portions substantially parallel at opposite ends of the body, a lower edge portion (18) substantially perpendicular to the lateral edge portions (14, 16 ), an upper edge portion (20) substantially perpendicular to the lateral edge portions and opposite the lower edge portion, an upper surface (22), a lower surface (24), first and second members forming mesh openings (26) , the first members (101) extending between the lateral edge portions and the second members (102) extending between the lower edge portion (18) and the upper edge portion (20), third and fourth members having a thickness greater than the first and second members, the third member substantially parallel and extending transversely between the lateral edge portions (14, 16) and having multiple first members between them, the fourth member they are substantially parallel and extending transversely between the lower edge portion (18) and the upper edge portion (20) and having multiple second members between them, reinforcement members integrally molded with the third and fourth members.
    [0037]
    Vibrating screen (10), characterized by comprising: a body (12) of flexible molded polyurethane having lateral edge portions (14, 16) opposite each other, a lower edge portion (18) between the lateral edge portions (14 , 16) and an upper edge portion (20) between lateral edge portions and opposite the lower edge portion (18), an upper surface (22), a lower surface (18), first and second members (101, 102 ) forming mesh openings, the first members (101) running between the side edge portions (14, 16) and the second members (102) running between the bottom edge portion (18) and the top edge portion (20) , third (203) and fourth (204) members having a thickness greater than greater than the first and second members (101, 102), the third members (203) running between the side edge portions (14, 16) and having multiple first members between them, the fourth members (204) running between the lower edge portion (18) and a the upper edge portion (20) and having multiple second members between them, first reinforcement members integrally molded with the third and fourth members.
    [0038]
    Vibrating screen according to claim 37, characterized by the fact that the first and second reinforcement members (50) are of different sizes.
    [0039]
    Vibrating screen according to claim 37, characterized by the fact that the second members (102) have a greater thickness than the first members (101).
    [0040]
    Vibrating screen according to claim 37, characterized by the fact that the openings (26) are about 0.044 mm to about 4 mm between the inner surfaces of the first members (101) and about 0.088 mm to about 60 mm between the internal surfaces of the second members (102).
    [0041]
    Vibrating screen according to claim 37, characterized by the fact that the first reinforcing members (50) are at least one of an aramid fiber and a natural fiber.
    [0042]
    Vibrating screen according to claim 41, characterized by the fact that the first reinforcing member (50) is an aramid fiber that is at least one of a multiple twisted yarn and a multiple woven yarn and in which the polyurethane impregnates the multiple yarn that forms a connection between the first member and the fiber therein and a connection between the second member and the fiber therein.
    [0043]
    Vibrating screen according to claim 37, characterized by the fact that the vibrating screen (10) has an open screen area greater than forty percent.
    [0044]
    Vibrating screen according to claim 37, characterized in that it additionally comprises fifth and sixth members (305, 306), the fifth members (305) running between the side edge portions (14, 16) and the sixth members (306) running between the lower edge portion (18) and the upper edge portion (20).
    [0045]
    Vibrating screen according to claim 44, characterized by the fact that at least one of the fifth and sixth members (305, 306) is thicker than at least one of the third and fourth members (203, 204).
    [0046]
    Vibrating screen according to claim 44, characterized in that it additionally comprises a second reinforcement member (50) integrally molded with the fifth and sixth members (305, 306).
    [0047]
    Vibrating screen according to claim 44, characterized by the fact that the second reinforcing members (50) are at least one of an aramid fiber and a natural fiber.
    [0048]
    Vibrating screen according to claim 47, characterized in that at least one of the first and second reinforcing members (101, 102) is an aramid fiber that is at least one of a twisted multiple yarn and a woven multiple yarn and wherein the polyurethane impregnates the multiple yarn that forms a bond between the first member and the fiber therein and a bond between the second member and the fiber therein.
    [0049]
    Vibrating screen according to claim 37, characterized by the fact that the first and third members extend between and fixed on the lateral edge portions and the second and fourth members extend and are fixed to the lower edge and edge portion higher.
    [0050]
    Vibrating screen according to claim 44, characterized by the fact that the fifth members (305) extend between and are fixed to the lateral edge portions and the sixth members (306) extend and are fixed to the lower edge portions and upper edge portion.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012026763B1|2020-06-23|Vibrating screen and method for making a vibrating screen
    US9010539B2|2015-04-21|Polyurethane vibratory screen
    BR112015023789B1|2020-12-01|polyurethane vibrating screen
    US4857176A|1989-08-15|Reinforced molded polyurethane vibratory screen
    US9375756B2|2016-06-28|Polyurethane vibratory screen
    US4819809A|1989-04-11|Reinforced polyurethane vibratory screen
    BR0318564B1|2014-02-18|"DOUBLE TORTION WIRE PROTECTIVE SCREEN WITH HEXAGONAL MESHES AND PROTECTIVE STRUCTURE".
    BRPI0915442B1|2019-10-29|tamis improved
    BRPI0610779B1|2019-04-09|SCREENING MODULE FOR A SCREENING SET, AND, SCREENING SET
    BR112014021318B1|2020-12-01|fabric for use in composite materials and process for the production of fabric and a composite material body
    BR112012010977B1|2019-09-24|ENHANCED ARROW PREFORM | FORMAT, METHOD FOR FORMING SUCH PREFORM AND THREE-DIMENSIONAL COMPOSITE STRUCTURE UNDERSTANDING SUCH PREFORM
    BRPI0610952B1|2018-10-16|screening arrangement
    BR112017020064B1|2022-01-04|SCREEN, SCREEN PLATFORM ASSEMBLY AND SYSTEM FOR SEPARATING MATERIALS, AND METHOD FOR SEPARATING MATERIALS
    US6818571B1|2004-11-16|Mesh fabric
    AU2015200737B2|2017-07-27|Polyurethane vibratory screen
    RU2766874C2|2022-03-16|Polyurethane vibration sieve
    ES2222233T3|2005-02-01|REINFORCEMENT COAT FOR USE IN COMPOSITE MATERIALS TO FORM BY MEANS OF A VACUUM TECHNIQUE
    CN106245203A|2016-12-21|A kind of crank beating flexible canvas loom
    同族专利:
    公开号 | 公开日
    CO6630198A2|2013-03-01|
    CN102917808A|2013-02-06|
    RU2015101096A3|2018-10-26|
    RU2020117755A|2021-11-29|
    CL2016000531A1|2016-11-04|
    RU2015101096A|2015-06-27|
    CA2796724C|2015-04-07|
    PE20131015A1|2013-09-26|
    MX2012012155A|2013-02-27|
    AU2011243215B2|2014-11-20|
    EP3108971A2|2016-12-28|
    EP2560769A1|2013-02-27|
    AU2011243215A1|2012-11-08|
    US8584866B2|2013-11-19|
    CN102917808B|2016-06-08|
    CL2012002918A1|2013-05-17|
    EP2560769B1|2016-07-20|
    NZ603094A|2015-05-29|
    US20110253602A1|2011-10-20|
    ECSP12012299A|2013-03-28|
    UA106423C2|2014-08-26|
    RU2543393C2|2015-02-27|
    CA2796724A1|2011-10-27|
    EP2560769A4|2014-02-12|
    TN2012000497A1|2014-04-01|
    NZ707156A|2016-08-26|
    BR112012026763A2|2016-07-12|
    EP3108971A3|2017-07-19|
    WO2011133238A1|2011-10-27|
    RU2020117755A3|2021-12-17|
    RU2012148809A|2014-05-27|
    PE20170855A1|2017-07-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US966578A|1908-04-20|1910-08-09|Sherman P Murphy|Screen for threshing-machines.|
    DE1758860A1|1968-08-22|1971-06-03|Stahlgruber Gruber & Co Otto|Elastic sieve bottom|
    US3980555A|1973-08-24|1976-09-14|Screenex Wire Weaving Manufacturers Limited|Replacable screen with frame|
    DE2649376A1|1975-11-04|1977-05-12|Terence Charles Adams|METHOD OF MANUFACTURING A SCREEN|
    US4222865A|1979-02-16|1980-09-16|Irathane Systems Incorporated|Trommel screen unit|
    DE3008931A1|1980-03-08|1981-09-17|Hein, Lehmann AG, 4000 Düsseldorf|SYSTEM SCREEN|
    DE3041338A1|1980-11-03|1982-05-13|Hein, Lehmann AG, 4000 Düsseldorf|SIEVE BOTTOM|
    US4819809A|1985-09-09|1989-04-11|Derrick Manufacturing Corporation|Reinforced polyurethane vibratory screen|
    US4857176A|1986-08-04|1989-08-15|Derrick Manufacturing Corporation|Reinforced molded polyurethane vibratory screen|
    SU1789302A1|1990-06-28|1993-01-23|Sp Trest Uraltsvetmetremont G|Sieve for sizing screens|
    EP0680385B1|1993-01-13|1999-09-15|Derrick Manufacturing Corporation|Undulating screen for vibratory screening machine and method of fabrication thereof|
    US20030042179A1|1998-10-30|2003-03-06|Adams Thomas C.|Vibratory separator screens|
    RU8736U1|1998-07-10|1998-12-16|Кипоренко Владимир Трофимович|QUALITY ADJUSTING SCREW OF THE MIXTURE OF THE CARBURETOR OF THE INTERNAL COMBUSTION ENGINE|
    AUPP904499A0|1999-03-08|1999-03-25|Cmi Malco Pty Ltd|A screening apparatus|
    US7484625B2|2003-03-13|2009-02-03|Varco I/P, Inc.|Shale shakers and screens with identification apparatuses|
    UA68848A|2003-11-11|2004-08-16|Yurii Serhiiovych Mostyka|Screen sieve|KR20150127141A|2013-03-15|2015-11-16|데릭 코포레이션|Polyurethane vibratory screen|
    US9403192B2|2010-04-19|2016-08-02|Derrick Corporation|Polyurethane screen|
    WO2019125515A1|2017-12-21|2019-06-27|Derrick Corporation|Injection molded screening apparatuses and methods|
    US11161150B2|2012-05-25|2021-11-02|Derrick Corporation|Injection molded screening apparatuses and methods|
    ES2706411T3|2012-05-25|2019-03-28|Derrick Corp|Injection molding sieving apparatus and method|
    US9409209B2|2012-05-25|2016-08-09|Derrick Corporation|Injection molded screening apparatuses and methods|
    US10576502B2|2012-05-25|2020-03-03|Derrick Corporation|Injection molded screening apparatuses and methods|
    GB2595349A|2020-04-01|2021-11-24|Derrick Corp|Injection molded screening apparatuses and methods|
    CA2876340C|2012-06-11|2018-07-17|M-I L.L.C.|Vibratory separator screen|
    GB2531659A|2013-04-30|2016-04-27|M-I Drilling Fluids U K Ltd|Screen having frame members with angled surface|
    DE102014009704B3|2014-07-02|2015-08-13|Rhewum Gmbh|Plastic screen covering for a screening machine for classifying in particular coarse-grained bulk material|
    GB2557546A|2015-09-14|2018-06-20|M I Drilling Fluids Uk Ltd|Clip & seal assembly|
    CN106393532B|2016-12-09|2019-05-14|马瑞停|A kind of mold and its forming method producing the fine vibration screen of high frequency|
    CN110691821A|2017-04-28|2020-01-14|德里克公司|Thermoplastic composition, method, apparatus and use|
    US11213857B2|2017-06-06|2022-01-04|Derrick Corporation|Method and apparatus for screening|
    FI12523U1|2018-10-04|2019-12-13|Derrick Corp|Screen basket apparatus, screening cartridge assembly and screen assembly|
    WO2018226878A1|2017-06-06|2018-12-13|Derrick Corporation|Method and apparatuses for screening|
    JOP20180080A1|2017-09-01|2019-03-01|Derrick Corp|Deblinding apparatuses and methods for screening|
    US20210086232A1|2019-09-19|2021-03-25|Derrick Corporation|Tension screened assembly|
    CN112023471A|2020-08-20|2020-12-04|安徽方园塑胶有限责任公司|Polyurethane sieve sheet for arc dewatering screen|
    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-04-14| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-06-23| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/02/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/763,046|US8584866B2|2010-04-19|2010-04-19|Polyurethane vibratory screen|
    US12/763,046|2010-04-19|
    PCT/US2011/023923|WO2011133238A1|2010-04-19|2011-02-07|Polyurethane vibratory screen|
    [返回顶部]