• 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:
    apparatus, and method for processing a fluid a vibrating separator includes a sieve frame having an upper sieve surface and a plurality of openings and a first sieve insert arranged in a first opening of the plurality of sieve frame openings, the sieve insert having a sieve surface positioned at a first height above the upper sieve surface. the vibrating separator further includes a second sieve insert disposed in a second opening of the plurality of openings in the second sieve frame, where a sieve surface of the second sieve insert is positioned at a second height. the second height may be different from the first height. a method for processing fluid includes feeding a fluid stream to a vibrating separator, and draining the fluid over a sieve having a first sieve insert positioned at a first height.
    公开号:BR112014030936B1
    申请号:R112014030936-1
    申请日:2013-06-11
    公开日:2020-09-01
    发明作者:Eric Cady
    申请人:M-I L.L.C；
    IPC主号:
    专利说明:

    FUNDAMENTALS
    [0001] Vibratory separators are used to separate solid particles of different sizes and / or to separate solid particles from fluids. Vibratory separators can be used in the oil and gas industry, where they are often called gravel stirrers. Gravel agitators or vibratory separators are used to remove cuts and other solid particles from the drilling mud returned from a well. A gravel stirrer is a vibrating sieve table, on which drilling mud used for return is deposited, and through which substantially cleaner drilling mud emerges. The gravel stirrer can be an inclined table, with a generally perforated filter sieve bottom. Drilled mud returned is deposited at one end of the gravel stirrer. As the drilling mud moves to the opposite end, the fluid falls through the holes in a reservoir below, thereby leaving the solid particulate material behind.
    [0002] Vibratory separators can also be used in the food industry, cleaning products industry, wastewater treatment and others. In general, the size of a shaker screen can be predetermined by the size of the shaker basket, which is generally determined by the size of the shaker area. It may be desirable to maximize the value of the fluid capacity possessed by an agitator (i.e., the number of gallons / minute of drilling fluid / mud that an agitator can process). The greater the water capacity of an agitator, the less agitators and sieves can be used to maintain drilling operations. Because the size of the sieve is often predetermined, the sieving area of a pre-tensioned two-dimensional sieve is also generally predetermined. For example, the maximum sieve area for a 2-foot by 4-foot sieve is 8 square feet. In addition, the wire mesh is attached to the sieve frame, so that the sieve area, where the wire mesh is attached, is blocked and the effective area of the open or uncapped sieve is less than 8 feet. using the example above. The wire mesh can also decrease the uncapped area, so that the effective sieving area of the 8 square foot sieve can be reduced by more than 50%. Despite many valuable contributions from the art, it would be beneficial to develop systems and methods that efficiently process fluids, including oil-based return drilling fluids. BRIEF DESCRIPTION OF THE DRAWINGS
    [0003] Figure 1 shows a perspective view of a sieve frame, according to one or more embodiments of the present disclosure.
    [0004] Figures 2A and 2B show perspective views of sieve inserts, according to one or more embodiments of the present disclosure.
    [0005] Figures 3A and 3B show perspective views of a sieve frame with installed sieve inserts, according to one or more embodiments of the present disclosure.
    [0006] Figure 4 shows a perspective view of a sieve frame with alternating sieve inserts, installed in accordance with one or more embodiments of the present disclosure.
    [0007] Figure 5 shows a cross-sectional view of a sieve with alternating sieve inserts, installed in accordance with one or more embodiments of the present disclosure.
    [0008] Figure 6 shows a side view of a sieve with installed sieve inserts, according to one or more embodiments of the present disclosure.
    [0009] Figure 7 shows a perspective view of a sieve with a plurality of sieve inserts installed, according to one or more embodiments of the present disclosure.
    [00010] Figure 8 shows a perspective view of a sieve, according to one or more embodiments of the present disclosure.
    [00011] Figure 9 is a side view of two adjacent sieves, each having a sieve insert, in accordance with embodiments of the present disclosure. DETAILED DESCRIPTION
    [00012] The following is directed to several exemplary embodiments of the disclosure. Although one or more of these embodiments may be preferred, the described embodiments should not be interpreted, or otherwise used, as limiting the scope of the description, including the claims. In addition, those skilled in the art will appreciate that the following description has a wide application, and the discussion of an embodiment is intended only to be an example of an embodiment, and is not intended to suggest that the scope of the disclosure, including the claims, be limited to that embodiment. Specifically, although embodiments disclosed herein may refer to gravel agitators or vibratory separators used to separate cuts from drilling fluids in oil and gas applications, one skilled in the art will appreciate that a vibratory separator (or vibrating agitator) and its component parts, as disclosed herein, and methods described herein, can be used in any industrial application. For example, vibration separators, in accordance with embodiments disclosed herein, can be used in the food industry, cleaning products industry, wastewater treatment, and others.
    [00013] Some terms used throughout the following description and claims refer to specific features or components. As those skilled in the art will realize, different people may refer to the same resource or component, under different names. This document is not intended to distinguish between components or features, which differ in name, but not in function. Figures are not necessarily drawn to scale. Some current features and components may be shown in an exaggerated scale, or in a somewhat schematic form, and some details of conventional elements may not be shown, for reasons of clarity and conciseness.
    [00014] In the following description and claims, the terms "including" and "comprising" are used openly and therefore should be interpreted to mean "including, but not limited to ..." the term "couple" or "couple" is intended to mean an indirect or direct connection. Thus, if a first component is coupled to a second component, that connection can be through a direct connection, or through an indirect connection through other components, devices, and connections. In addition, the terms "axially" and "axially" generally mean along or parallel to a central or longitudinal axis, while the terms "radial" and "radially" mean generally perpendicular to a central longitudinal axis.
    [00015] In addition, directional terms, such as "above", "below", "upper", "lower" etc., are used for convenience in reference to the attached drawings. In general, "up", "top", "up", and similar terms refer to a direction to the earth's surface, from below the surface along a borehole, and "below", " bottom "," down "and similar terms refer to a direction that moves away from the surface along the borehole, that is, into the well, but is for illustrative purposes, and the terms are not intended to limit disclosure.
    [00016] The embodiments disclosed herein generally refer to vibratory separators. In one aspect, embodiments described herein refer to a vibrating separator, including a sieve frame having a first sieving surface disposed above a second sieving surface. In other words, a single screen frame includes a two-layer screen surface. The two-layer sieving surface can be integrally formed with the sieve frame, or one or both of the two layers of the sieving surface can be coupled to the sieve frame. In some embodiments, the first sieving surface can be attached to the second sieving surface or can be attached to the sieve frame.
    [00017] In another aspect, embodiments described herein refer to a vibrating separator, including a sieve frame having an upper sieve surface and a plurality of openings, and a sieve insert arranged in a first opening of the plurality of openings in the sieve frame, the sieve insert having a sieve surface positioned at a first height above the upper sieve surface of the sieve frame.
    [00018] In another aspect, embodiments described herein refer to a vibrating separator, including a sieve frame having one or more openings, a first sieve insert disposed in one or more openings of the sieve frame, on which a surface the sieve insert of the first sieve insert is positioned at a first height, a second sieve insert disposed in one or more openings of the sieve frame, wherein a sieve surface of the second sieve insert is positioned at a second height. Specifically, the first height can be positioned above an upper sieve surface of the sieve frame, and the second height can be positioned above the first height.
    [00019] In another aspect, embodiments described herein refer to a method for processing a fluid, the method including feeding a flow of drilling fluid to a vibrating separator, and draining the fluid over a sieve having a first insert of sieve positioned at a first height. In some embodiments, the fluid may be a drilling fluid, wastewater fluid or other fluids containing suspended particles.
    [00020] More particularly, embodiments disclosed herein refer to screens for vibrating agitators. In one aspect, embodiments described herein refer to vibrating stirrers with a two-layer sieving surface. In other embodiments, a vibrating agitator may include a sieving surface with three or more layers. Such multi-layer sieving surfaces can provide an increase in the sieving area, which increases the agitator's effective processing capacity. For example, the sieve inserts described herein can be adjusted, based on the desired effective processing capacity of the agitator.
    [00021] Referring initially to Figures 1, 2A, and 2B, a sieve frame for composite 100 and sieve inserts 110 and 120, according to one or more embodiments of the present invention, are shown. The composite sieve frame 100 is configured to be attached to an agitator frame (not shown), as will be understood by one skilled in the art. The screen frame 100 is formed with a series of openings or individual cells 102, into which, first screen inserts 10 and second screen inserts 120 are configured to be inserted. Although the sieve frame 100 is described as a sieve frame for composite, one skilled in the art will appreciate that other types of sieve frames can be used, without departing from the scope of the embodiments disclosed herein.
    [00022] The first sieve inserts 10 and second sieve inserts 120 can be integrally molded inserts, with a central opening 112 through them. The sieve inserts 110 and 120 may have an edge or lip 111 formed around an outer periphery of the sieve insert, which is configured to contact a surface of the sieve frame 100. The lip 111 is configured to prevent the inserts from sieves 110 and 120 fall through cells 102 in the sieve frame 100, when the sieve inserts are installed. In certain embodiments, and as shown in the Figures, inserts 110 and 120 can be units of generally rectangular shape. In other embodiments, inserts 110 and 120 can be shaped to match the shape of the openings or cells 102 in the sieve frame, including, but not limited to, circular, triangular, and other better known shapes.
    [00023] The first sieve inserts 110, shown in Figure 2A, can be configured as individual sieve inserts 110, which are configured to be inserted individually into cells 102 of the sieve frame 100. Similarly, the second sieve inserts 120, shown in Figure 2B, can be configured as individual sieve inserts 120, which are configured to be inserted individually into cells 102 of the sieve frame 100. In certain embodiments, first individual sieve inserts 110 can be attached or coupled together to form a larger modulated sieve unit 115 (shown in Figure 2A), which includes multiple first individual sieve inserts 110. Likewise, second individual sieve inserts 120 can be attached or coupled together to form a larger unit modulated sieve 125 (shown in Figure 2B), which includes multiple second individual sieve inserts 120. In a In some embodiments, a modulated unit 115 may include several first individual sieve inserts integrally formed as a single unit.
    [00024] For example, as shown in Figure 2A, in certain embodiments, four first individual sieve inserts 110 can be attached together. In other embodiments, ten or more first sieve inserts 110 can be combined to form a large modulated unit of first sieve inserts 110. For example, individual first sieve inserts 110 can be combined, so that there are between two and first five individual sieve insert units installed in cells 102 of the sieve frame 100. Likewise, ten or more second sieve inserts 120 can be combined together to form a large modulated unit of second sieve units 120. In addition , modulated units, including first individual screen units 10 and second individual screen units 120, can be formed.
    [00025] The second sieve inserts 120 are taller and about twice as wide as the first sieve inserts 110. An upper portion 124 of the second sieve inserts 120 can be formed with a generally Y-shaped configuration, which provides a greater width and a larger sieving area, and results in the potential for greater effective fluid processing capacity, than the first sieve inserts 110. In other embodiments, the upper part 124 of the second sieve inserts 120 can be formed having a T, U, W, or other shape configurations. A lower part 122 of the second sieve insert 120 has a width, which corresponds to a width of the cell 102 (Figure 1), into which the insert 120 is installed. The enlarged upper part 124 thus provides a greater screening area.
    [00026] Insert 120 also includes an inclined part, which extends between the enlarged upper part 124 and the lower part 122. The inclined part can ensure that fluid does not get trapped inside the insert 120 after passing through the part enlarged upper part 124 or a mesh screen fixed to the upper surface of the upper part 124, as discussed below. As shown, insert 120 may include two inclined parts, that is, two sides of the insert are inclined. However, one skilled in the art will realize that only one side is slanted, or that each side of the insert, extending from the top 124 to the bottom 122, is slanted. In addition, one skilled in the art will appreciate that an angle of the inclined part (s) may vary, depending, for example, on the desired sieving surface area of the insert 120, the width of the upper part 124 of the insert, the width of the bottom 122 of the insert, the width of a cell 102, into which the insert is inserted, the desired or expected flow rate of the material to be separated, etc. The angle of the inclined part can be comprised between, for example, 10 degrees and 80 degrees. In some embodiments, the angle of the inclined portion can be from 30 degrees to 60 degrees. In still other embodiments, the angle of the inclined portion may be between 10 degrees and 50 degrees or between 25 degrees and 75 degrees. One skilled in the art will appreciate that the sloping part can be of any degree, based on a given application. The angle of the inclined part on one side of the insert can be the same or different than the angle of the inclined part on the other side of the same insert. Inserts in a modulated unit can have the same or different angles of inclined parts.
    [00027] In addition, in certain embodiments, the top surfaces of the second sieve inserts 120 can be positioned above the top surfaces of the first sieve inserts 110. For example, in certain embodiments, a distance between about 1 - 2 inches can exist between the top surface of the second sieve insert and the top surface of the first sieve insert. In other embodiments, the top surfaces of the second sieve inserts 120 can be positioned between about 2-5 inches above the upper surfaces of the first sieve inserts. As shown in Figure 5, when placing the second sieve inserts 120 (for example, the modulated unit 125) at a height above and overlapping the first sieve inserts 110 (for example, the modulated unit 115), the second insert sieve 120 (modulated unit 125) can act as a funnel to channel more fluid through frame 100, when fluid passes through the first and second sieve inserts 110 (modulated unit 115) and 120 (modulated unit 125).
    [00028] Methods for installing the sieve inserts 110 and 120 in the sieve frame 100 are described with reference to Figures 3A - 5. The first sieve inserts 110 can be installed within one or more cells 102 of the sieve frame 100, and attached to the sieve frame 100. Subsequently, the second sieve inserts 120 can be installed inside cells 102 in the sieve frame 100, which do not have first inserts 110 installed in them. For example, one or more of the second sieve inserts 120 can be mounted adjacent to the first sieve inserts 120. In certain embodiments, the first and second sieve inserts 110 and 120 can be arranged in an alternating pattern over a length of the sieve frame 100 (shown in Figure 5). Other installation methods may include initially installing the first sieve inserts 110, followed by the installation of the second sieve inserts 120. The first and second sieve inserts 110 and 120 can be installed and attached to the sieve frame 100, using any number of methods for installing and attaching the sieve inserts to the frame.
    [00029] For example, the sieve inserts 110 and 120 can be molded with the sieve frame 100. Other methods include using locking edges to retain the first and second sieve inserts 110 and 120 to the sieve frame 100. In others similar embodiments, screws or mechanical fasteners can be used. Likewise, the first and second sieve inserts 110 and 120 can be glued, welded or otherwise attached to the sieve frame 100 using chemical adhesives, thermal glue etc. In some embodiments, the first sieve inserts 110 can be molded with the sieve frame 100, while the second inserts 120 can be coupled separately to the sieve frame 100, using, for example, mechanical fasteners, adhesives, glue etc. The first sieve inserts 110 can be initially formed or molded with the sieve frame 100, or the first sieve inserts 110 can be molded to the sieve frame 100. In still other embodiments, the first and second inserts 110, 120 can be molded to the sieve frame 100.
    [00030] Other fixation methods include using two pieces of sieve inserts (not shown), instead of single piece inserts (as shown in Figures 2A and 2B). The two-piece sieve inserts include separable top and bottom parts, which can be attached or coupled together to form a single sieve insert. The top part of the sieve insert can be installed on the top of a cell 102 of the sieve frame 100, and the bottom part of the sieve insert can be installed on the bottom of the same cell 102, on the sieve frame 100. The top and bottom portions of the two pieces of sieve insert can then be secured together in cell 102 to form a single sieve insert. For example, the upper and lower parts of the sieve insert can be secured together with mechanical fasteners, adhesives, thermal glue etc. In addition, the fixation of the top and bottom parts of the sieve insert within cell 102 secures effectively the two pieces of the sieve insert within the sieve frame 100.
    [00031] In yet other embodiments, the first and second inserts can be configured with a groove or dovetail format, which allows horizontal installation (instead of vertical installation). For example, the dovetail configuration of the first and second sieve inserts may correspond to a dovetail groove formed in the sieve frame and into which the first and second inserts can be installed.
    [00032] Figures 4 and 5 show an alternating arrangement of the first sieve inserts 10 and second sieve inserts 120 installed in the sieve frame 100, according to one or more embodiments of the present disclosure. The alternating arrangement of the first and second sieve inserts 110 and 120 provides a composite sieve having alternating low and high sieve inserts 110 and 120 installed therein. In other embodiments, instead of having each second row having a second sieve insert 120 (i.e., highest sieve insert), each third, fourth, or fifth row of cells can have the second highest sieve insert 120 installed.
    [00033] The arrangement of the first and second sieve inserts 110 and 120 can be adjusted, based on the effective fluid flow rate. For example, when there is a higher rate of fluid flow, second sieve inserts 120 can be installed in all other rows, alternately with the first sieve inserts 110, as shown in Figures 4 and 5. In other forms of In addition, for a higher flow rate, second sieve inserts 120 can be alternated with first sieve inserts 110 on a part of the sieve surface closest to the fluid inlet. Thus, the sieve surface can process a maximum volume of fluid flowing through it. For a lower flow rate, fewer seconds 120 sieve inserts can be installed. For example, at a lower flow rate, second sieve inserts 120 can be installed every third, fourth, or fifth row. In still other embodiments, for very low flow rates, only the first sieve inserts 110 (without second sieve inserts 120) can be used to properly process the fluid flowing through the sieve surface. In additional embodiments, an alternating arrangement of the first and second sieve inserts 110 and 120 can be used on part of the entire sieve surface (for example, a quarter or half of the sieve surface), while in parts remaining from the sieve surface, only the first sieve inserts 110 can be used.
    [00034] Although described previously with reference to the second inserts 120, according to Figure 2B, Figure 5, in particular, illustrates how embodiments of the present invention provide an increase in the sieving area. As shown, first sieve inserts 10 have a width "A", which corresponds to a width of cell 102 (Figure 1), within which, the first sieve inserts 110 are installed. Likewise, a base portion 122 (Figure 2B) of second sieve insert 120 has a width "A", which also corresponds to a width of cell 102, within which the second sieve inserts 120 are installed. In certain embodiments, the width "A" of the base portion 122 of the second sieve insert 120 may be different than the width "A" of the first sieve insert 110. Thus, in some embodiments, the first and second sieve inserts 110, 120 can be configured to be installed in different cells 102 (Figure 1) of the sieve. In other words, the first sieve insert 110 can be sized to fit the specific cells 102 of a sieve, while the second sieve insert 120 is sized to fit other cells 102 of the sieve. The upper part 124 of the second insert 120 has a width "B", which is greater than the width "A". As previously described, the width "B" can be about twice as wide as the width "A" or even greater in certain embodiments. Therefore, by installing second inserts with an increased width of almost half the screen frame, the overall screen area of the screen frame can be increased.
    [00035] Although embodiments disclosed herein describe a first sieve insert 110 and a second sieve insert 120, one skilled in the art will appreciate that a third sieve insert (not shown) or additional sieve inserts can also be used, so as to provide a sieving area with several layers in a sieve. For example, a third sieve insert, similar to the first and second inserts 110, 120, can be used in conjunction with the first and second inserts 110, 120 in a given sieve 100 (Figure 1). In this example, a sieve surface of the third sieve insert is positioned at the third height, the sieve surface of the first sieve insert is positioned at a first height, and the sieve surface of the second sieve insert is positioned at a second height . The first height, second height, and third height are each different heights. Thus, installing the first, second and third inserts in an agitator screen provides a three-layer screening area. The third sieve insert can overlap with one or both of the first and second inserts. A person skilled in the art will realize that four, five, or more different sieving inserts, with sieve surfaces positioned at varying heights, can also be used.
    [00036] In yet other embodiments, a two-layer screening area can be provided, by including a single set of inserts. In other words, inserts arranged in certain cells 102 of a sieve and positioned at the same height with each other above the sieve can be used to create two sieving zones, that is, the sieve sieve surface and the sieve surface of the single set of inserts. For example, as shown in Figures 6 and 7, the sieve 100 can include a plurality of openings or cells 102, through which fluid and / or suspended particles can flow. One or more sieve inserts 130 can be arranged in one or more openings or cells 102 of the sieve 100. In some embodiments, the sieve inserts 130 can be arranged in openings formed in the sieve and configured to receive the sieve inserts. For example, as shown in Figure 8, the sieve 100 can include a plurality of cells 102, through which the sized material can flow and which forms a sieving surface. The screen 100 can also include a plurality of openings 105 configured to receive a screen insert (for example, 130 in Figure 7). As shown in Figure 8, the screen 100 can be configured to receive a number of screen inserts (not shown) in openings 105. For example, Figure 8 shows four rows of openings 105 configured to receive screen inserts, arranged between sets 102 cells from the sieve. One skilled in the art will appreciate that screens 100 with other configurations of the number of cells 102 or apertures 105 for screen inserts can be used, without departing from the scope of the embodiments disclosed herein. In addition, although the screen 100 in Figure 8 has openings designated 105, configured to receive one or more screen inserts, a person skilled in the art will appreciate that the screen 100 may not include openings designated 105, configured to receive screen inserts and, instead, the sieve inserts can be arranged in cells 102, in any configuration selected based on a given application.
    [00037] As shown, the sieve 100 can include a plurality of sieve inserts 130, which form a set of sieve inserts. Each of the sieve inserts 130 is of the same size, shape, and configuration as any other. Each sieve insert 130 has a sieve surface 134 and each sieve insert 130 is positioned, so that a height of each sieve surface 134 of each sieve insert 130 above a sieve surface 132 of sieve 100 is the same. In this way, the sieve surfaces 134 of the sieve inserts 130 provide a first sieving surface and the sieve surface 132 of the sieve 100 provides a second sieving surface.
    [00038] One skilled in the art will appreciate that the design or configuration of the sieve inserts 130 may vary. For example, sieve inserts 130 may include the features described above in relation to the first sieve inserts 110 and / or second sieve inserts 120. Sieve inserts 130 may have a constant width "A" or they may include a taper, the from a first width "A" to a second width "B". In some embodiments, although the sieve inserts 130 each provide a sieve surface 134 at the same (equal) height above the sieve surface 132 of the sieve 100, the width of any part of the sieve inserts can vary. For example, the width "B" of a first insert may be different from the width "B" of a second insert. Likewise, although the sieve inserts 130 each provide a sieve surface 134 at the same (equal) height above the sieve surface 132 of the sieve 100, the length of the sieve inserts may vary. For example, the length of a first insert may be different from the length of a second insert. Thus, in some embodiments, the sieving area of each insert may vary, but the height of the sieving area of the inserts 130 over the sieve 100 is constant between the inserts 130.
    [00039] Sieve inserts 110, 120, 130 can be made of any material suitable for a particular application, for example, sieves for oil fields, sieves for wastewater treatment, sieves for food processing, etc. For example , glass-filled polypropylene can be used in certain embodiments. In other embodiments, glass-filled nylon can be used. Steel reinforcements can also be used inside the sieve inserts to add rigidity. In addition, the sieve inserts 110, 120, 130, formed in accordance with embodiments disclosed herein, may include a single opening therethrough, two openings arranged longitudinally or laterally, three openings, four openings, or more. For example, as shown in Figure 2A, a sieve insert 110 can include a single insert with a single opening, or a modulated unit 115 can include four inserts, each insert having a single opening. As shown in Figure 7, a sieve insert 130 can be a modulated unit, which includes two rows of a plurality of openings. In other embodiments, a single insert can include two rows of three openings, and a modulated unit can include six inserts with two rows of three openings. Thus, although examples are shown in the Figure and described herein, one skilled in the art will realize that other configurations of sieve inserts can be used, without departing from the scope of the embodiments disclosed herein.
    [00040] In addition, a mesh screen (not shown) can be applied to the top of the 110, 120, and 130 sieve inserts. The mesh screen can be of a high capacity wire mesh design. The mesh screen can be attached to the sieve inserts, before the inserts are inserted into cells 102 of the sieve frame 100. The mesh screen can be attached in various ways to the sieve inserts, including the use of adhesives, fasteners , and other known fixation methods. A mesh screen can also be applied to the top of the sieve 100 over cells 102, which do not include a sieve insert.
    [00041] In certain embodiments, the mesh screen can be attached to cover the entire sieving surface, that is, first sieve inserts 110, second sieve inserts 120, and sieve inserts 130 can be covered with a screen mesh. The size of the mesh screen (i.e., the mesh spacing) can be determined by characteristics of the specific fluid and / or particulate material to be processed. For example, in the well application, the mesh screen size can be determined according to the characteristics of a specific well hole. For example, depending on the characteristics of the well, a coarse mesh screen can be used to drill a well containing, for example, essentially gumbo (eg, sticky, soft, swollen clay or sticky gravel), and a fine mesh screen can be used to drill a well containing, for example, higher sand content. In other embodiments, different mesh sizes (i.e., mesh fabric having different size openings) can be used on different surfaces of the same fabric. For example, a first mesh screen size can be used to cover the first sieve inserts 110, and a second mesh screen size can be used to cover the second sieve inserts 120. In other embodiments, a first mesh screen size can be used to cover an area of the sieving surface closest to a sieve inlet, and a second mesh screen size can be used to cover an area of the sieving surface closest to a sieve outlet .
    [00042] In addition, in certain embodiments, sealing mechanisms (not shown) can be installed between adjacent sieve inserts, to prevent leakage paths between the sieve inserts. For example, seals can first be installed in cells 102 of the sieve frame 100, before inserting the sieve inserts 110 and 120. Thus, when the sieve inserts 110, 120 and / or 130 are installed, the seals in cells 102 they may surround the sieve inserts 110, 120, 130. In other embodiments, the sieve inserts 110, 120, 130 may have a seal arranged around an outer periphery, which surrounds a wall of cells 102, when the inserts screens are installed in cells 102 of the screen 100. Other sealing mechanisms to prevent leakage paths between the screen inserts and the screen frame will be known to those skilled in the art.
    [00043] In still other embodiments, the sieve inserts (110, 120, 130) and the sieve 100 can be configured, so that sieve inserts arranged in a first sieve close to the periphery of a first sieve make contact with inserts sieves arranged in a second sieve close to the periphery of a second sieve. As shown in Figure 9, when two or more screens 100a, 100b are placed next to each other in a vibrating separator (not shown), at least one screen insert 140a over the first screen 100a (shown at 142) makes contact with at least a sieve insert 140b in the second sieve 100b over a length of the sieve inserts 140a, 140b. This configuration can allow solids to remain on the inserts 140a, 140b, when the material is drained over the screens 100a, 100b, until they are discharged out of the vibrating separator. This can prevent solids or fluids from surrounding the sieving surfaces of the sieve 100a, 100b and / or the sieve inserts 140a, 140b. In some embodiments, a seal can be formed by contact between the sieve inserts 140a, 140b. In other embodiments, a sealing member can be coupled to one or both of the sieve inserts 140a, 140b, in order to provide a better seal or prevent solids from falling between the sieve inserts 140a, 140b.
    [00044] Although the embodiments described herein comment on "inserts", which can be positioned or molded on a sieve frame, one skilled in the art will realize that a sieve frame, according to embodiments of the present invention, can provide a two-layer (or multi-layer) sieving surface without providing inserts. In other words, a sieve frame according to the present invention can include two (or more) sieving surfaces formed in one piece. A sieve frame can include a first layer and a second layer, away from the first layer. For example, the first layer has a lower sieve surface and the second layer has an upper sieve surface. The first layer is positioned at a first height above the second layer. A mesh can be applied to the bottom surface of the sieve and the top surface of the sieve. The first and second layers (or multiple layers) can be designed similarly to the inserts above. For example, the first and second layers can include sloping parts and a sieving surface wider than an opening below the sieving surface. In addition, the first and second layers can be arranged in various patterns along the sieve frame, as described above with respect to the inserts.
    [00045] In some embodiments, a sieve, according to the embodiments disclosed herein, can include a sieve frame having a first sieving surface and a second sieving surface. The first sieving surface is positioned at a first height above the sieve frame. The second sieving surface can be formed on the sieve frame or can be positioned at a second height above the sieve frame. The first sieving surface is positioned above the second sieving surface. A sieving surface area of the first sieving surface at the first height above the sieve frame may be larger than an area of a sieve frame opening below the first sieving surface. If the second sieving surface is positioned at a second height above the sieve frame, then the area of the sieving surface of the second sieving surface may be larger than an area of an opening in the frame below the sieving surface. Thus, the surface area of the first and second sieving surfaces can be greater than the surface area formed between the first and second sides and the first and second ends of the sieve frame. In some embodiments, the second sieving surface can be flush with the sieve frame. The mesh can be applied to the first and / or second sieving surfaces. In some embodiments, the first and second sieve surfaces can be flat. In other embodiments, one or both of the first and second sieve surfaces can be angled or angled.
    [00046] In some embodiments, an apparatus includes a sieve frame, having a plurality of openings and including: a first layer having a first sieve surface disposed at a first height above the sieve frame; and a second layer having a second sieve surface, the second sieve surface away from the first sieve surface; and a mesh arranged on the first and second sieve surfaces.
    [00047] Vibratory separators using two-layer sieve surfaces described herein can have a single sieve tray in certain embodiments. In particular, older vibratory separators can be remodeled with the two-layer sieve surfaces described here, to increase the effective processing capacity. For example, agitators used on offshore platforms (maritime), where space on the probe floor is scarce, can be remodeled with the two-layer sieve surfaces, to increase the effective sieving area. Likewise, two-layer sieve surfaces can be used on agitators located on land platforms. In other embodiments, vibrating separators using the two-layer sieve surfaces can have multiple sieving trays and several two-layer sieve surfaces. In certain embodiments, the vibrating separator may include a first sieving tray, such as an upper sieving tray, with a first two-layer sieve, and a second sifting tray, such as a lower sieving tray, with a second sieve. two-layer system positioned below the upper sieving tray. In addition, those skilled in the art will realize that other sieving trays, such as a third and / or a fourth sieving tray, can be included within the vibrating separator, without departing from the scope of the present disclosure.
    [00048] In some embodiments, a two-layer (or multi-layer) screen, as disclosed herein, can be positioned on a vibrating separator at or near the feed end of the separator, while a conventional or a a single level is arranged near the discharge end of the separator. One skilled in the art will realize that, depending on the configuration of a given vibrating separator, one or more two-layer (or multilayer) screens can be used in various positions, on one or more trays outside the vibrating separator. Embodiments of the present invention provide an agitator sieve with an increase in the open sieving area and thus a greater total fluid capacity. The two-layer sieving area can improve the fluid capacity of the sieve. For example, for a sieve having 5.5 square feet of uncapped area, a sieve with a two-layer sieve insert can increase the uncapped area by 40% to 7.7 square feet, or by 60% to 8 , 8 square feet. On a four-sieve shaker, this would increase by 8.8 square feet, from 22 to 30.8 square feet, or from 13.2 square feet to 35.2 square feet. One skilled in the art will appreciate that the sieving area of a sieve with sieve inserts, as described herein, can increase to any other value, including less than 40 percent, more than 60 percent, or between 40 and 60 percent , based on the configuration of the sieve inserts and the number of inserts installed on the sieve. The horizontal sieving surfaces (for example, the first and second sieve inserts) must have a larger effective sieving area and allow more fluid to pass through it, thus providing greater effective processing capacity of the sieve.
    [00049] Although only a few examples of embodiments have been described in detail above, those skilled in the art will readily realize that many modifications are possible in the exemplary embodiments, without departing materially from the scope of this Application. Accordingly, all such modifications are considered to be within the scope of that disclosure, as defined in the following claims. In the claims, clauses of the "device-plus-function" type (means-plus-function) are intended to cover the structures described here, as exercising the function recited and not only structural equivalents, but also equivalent structures. Thus, although a nail and a screw may not be structural equivalents, where a nail uses a cylindrical surface to fix wooden parts together, while a screw uses a helical surface, in order to fix pieces of wood, a nail and a screw can be equivalent structures. It is the applicant's express intention not to evoke 35 USC § 112, paragraph 6, for any limitations of any of the following claims, except for those, where the claim expressly uses the words "means for" in conjunction with an associated function.
    权利要求:
    Claims (13)
    [0001]
    1. Apparatus characterized by comprising: a sieve frame having a plurality of openings forming a sieve frame surface; a first sieve insert having a first end arranged in a first opening of the plurality of openings in the sieve frame, so that a second end of the first sieve insert, opposite the first end, extends out of the first opening and the surface of the sieve frame of the sieve frame, the first sieve insert having a defined height between the first and the second end of the first sieve insert, wherein the first sieve insert comprises at least one opening that extends unobstructed throughout the entire height of the first screen insert from the first end to the second end of the first screen insert, so that a first screen surface of the first screen insert is positioned at a first height above the screen frame surface of the screen frame; and a second sieve insert having a first end disposed in a second opening of the plurality of openings of the sieve frame, so that a second end of the second sieve insert, opposite the first end, extends out of the second opening and the sieve frame, the second sieve insert having a defined height between the first and the second end of the second sieve insert, wherein the second sieve insert comprises at least one opening that extends the entire height of the second sieve insert of the first end to the second end of the second sieve insert, so that a second surface of the sieve frame insert of the second sieve insert is positioned at a second height and the second height of the second surface of the sieve frame is different from the first height of the first surface of the frame insert.
    [0002]
    2. Apparatus according to claim 1, characterized in that the first and second sieve inserts are arranged in adjacent openings of the sieve frame.
    [0003]
    3. Apparatus according to claim 1, characterized by the fact that a sieve mesh covers the first and second sieve surfaces of the first and second sieve inserts.
    [0004]
    Apparatus according to claim 1, characterized in that the width of an upper part of the second sieve insert is greater than the width of an upper part of the first sieve insert.
    [0005]
    Apparatus according to claim 1, characterized in that the first sieve insert is a modulated unit comprising two or more first individual sieve inserts coupled together.
    [0006]
    Apparatus according to claim 1, characterized in that the second sieve insert is a modulated unit comprising two or more second individual sieve inserts coupled together.
    [0007]
    7. Apparatus according to claim 1, characterized in that the first sieve insert is coupled to the second sieve insert to form a modulated unit.
    [0008]
    8. Apparatus according to claim 1, characterized in that at least one of the first sieve insert and the second sieve insert comprises a dovetail configuration, which corresponds to a dovetail groove formed in the frame sieve.
    [0009]
    9. Apparatus according to claim 1, characterized in that the first and second sieve inserts are arranged in an alternating pattern along a length of the sieve frame.
    [0010]
    Apparatus according to claim 1, characterized in that it also comprises one or more seals disposed between the first and second inserts and the sieve frame.
    [0011]
    Apparatus according to claim 1, further comprising: a first size of the sieve mesh covering a first part of the sieve surface of the first sieve insert, and a second size of the sieve mesh covering a second part of the screen sieve surface of the second sieve insert.
    [0012]
    Apparatus according to claim 4, further comprising: a second sieve frame having an upper sieve surface and a plurality of openings, the second sieve frame disposed adjacent to the sieve frame; and a second sieve insert disposed in a second opening of the plurality of openings in the second sieve frame, the second sieve insert having a sieve surface positioned at a second height above the upper sieve surface of the second sieve frame.
    [0013]
    Apparatus according to claim 12, characterized in that at least a part of the first sieve insert disposed in the sieve frame makes contact with at least a part of the second sieve insert disposed in the second sieve frame.
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    同族专利:
    公开号 | 公开日
    US20150158054A1|2015-06-11|
    CA2876340C|2018-07-17|
    MX2016007601A|2017-01-16|
    GB201610266D0|2016-07-27|
    US20140183143A1|2014-07-03|
    WO2013188451A1|2013-12-19|
    EA201492220A1|2015-05-29|
    MX358596B|2018-08-27|
    CA2942584A1|2015-07-02|
    SA516371295B1|2020-12-20|
    GB2535123A|2016-08-10|
    BR112014030936A2|2017-06-27|
    CA2876340A1|2013-12-19|
    WO2015099994A1|2015-07-02|
    EA032616B1|2019-06-28|
    MX2014015143A|2017-06-16|
    GB2535123B|2020-12-16|
    US10086408B2|2018-10-02|
    EP2858762A1|2015-04-15|
    US9744564B2|2017-08-29|
    EP2858762A4|2016-01-27|
    NO20161013A1|2016-06-14|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-09-01| 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 11/06/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201261658175P| true| 2012-06-11|2012-06-11|
    US61/658,175|2012-06-11|
    PCT/US2013/045249|WO2013188451A1|2012-06-11|2013-06-11|Vibratory separator screen|
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