• 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:
    Rotary sieve of the type comprising an inlet for a liquid to be filtered (1), a filtering body (3), a first outlet (6) through which the elements that were in the liquid to be filtered come out and which are of a size larger than the size of screening and have not passed through the filtering body (3), and a second outlet (2) through which the already filtered liquid exits. The key of the screen is that it is a rotating disk screen where the filtering body (3) comprises a plurality of parallel, concentric disks (8), and spaced apart at least one distance (d) corresponding to the screening size, and said discs (8) rotate about a pivot axis (11) to which they are attached. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2646102A1
    申请号:ES201630765
    申请日:2016-06-07
    公开日:2017-12-12
    发明作者:Javier IBÁÑEZ RAMÓN；Elena IBÁÑEZ RAMÓN；Daniel IBÁÑEZ RAMÓN
    申请人:Javier IBÁÑEZ RAMÓN；Elena IBÁÑEZ RAMÓN；Daniel IBÁÑEZ RAMÓN；
    IPC主号:
    专利说明:

    ROTARY SIZE
    D E S C R I P C I O N
    5 OBJECT OF THE INVENTION
    The present invention is framed in the technical field of sieves for the screening of particles of a certain size in liquids.
    10 More specifically, a rotary sieve is described comprising a plurality of discs, separated from each other by a certain sieving distance.
    BACKGROUND OF THE INVENTION
    The sieves are devices or machines that generally comprise two sections through which a liquid with particles contained therein is passed to separate particles of a size larger than a predetermined size from the liquid.
    Among this type of sieves, for example, rotary sieves stand out in which the screening of the particles contained in the liquid is carried out by introducing the liquid into the sieve and rotating it around a mesh. The size of the through holes of said mesh allows the particles to be separated from the liquid during its passage through the sieve. At the exit, the liquid that is already free of the larger particles is collected on the one hand and on the other hand the particles that have not passed the sieve.
    25
    The most important technical problem associated with this type of sieves is that when the mesh is filled with elements or fibers that become entangled in it, the sieve becomes clogged and it is necessary to disassemble it for cleaning and put it into operation again. This means that in many cases this tapestry disassembly operation means that you have to stay disassembled for 30 long seasons. These jams are also produced in sieves with washing devices.
    Generally the elements that are hooked in the mesh are fibrous elements that are very difficult to clean. When the mesh is filled with these fibrous elements, the liquid to be screened cannot flow through it.
    In addition, rotary sieves with mesh generally comprise a spiral forming rings that, together with bands parallel to the axis of rotation, make up the mesh, and that said rings are welded to the bands. In many cases these welds are broken and the rings are loose. It is important to quickly repair this type of failure because otherwise 5 holes are created in the mesh through which elements of greater size than desired can pass. These types of repairs, in addition to being slow as previously described, have a very high cost.
    DESCRIPTION OF THE INVENTION
    10
    The rotary sieve of the present invention allows solving the previously described technical problem of mesh sieves known from the state of the art. The essential characteristic of the described rotary sieve is that, instead of mesh, it comprises a plurality of discs so that the screening is carried out by passing the liquid through them.
    fifteen
    In addition, the proposed sieve is self-cleaning, so the sieve maintenance operations are reduced to a minimum. Said rotary disk sieve comprises an inlet for the liquid to be filtered, a first outlet for the elements that are not filtered and a second outlet for the filtered liquid. Between the inlet and the outlets the liquid stops by a filtering body that has the particularity that it comprises a plurality of compact discs separated from each other by a corresponding distance with the corresponding filtering size.
    Therefore, the liquid to be filtered enters the rotary screen through the inlet for liquid to be filtered, which is generally a pipe, and is distributed evenly throughout the entire filter body 25, which has the appearance of a cylinder (due to the appearance of a cylinder). plurality of disks that are arranged concentrically with each other and that have the possibility of turning around the same axis of rotation).
    Said floating body rotates at low speed and the liquid that passes through the rotary sieve has to pass through it. Items that are larger than the default size for filtration do not fit between the discs and therefore do not pass through the filter body. These elements, which are solid particles, are retained on the surface of the discs and are led to a first exit through which they are removed from the rotary screen.
    Generally in the first exit there is a disk scraper to separate from the discs the elements that have not passed through the filtration cylinder. Preferably, in said first exit, next to the disk scraper is a discharge ramp so that the elements leave the rotary sieve by gravity.
    5
    The liquid that passes through the filtration body with particles having a size smaller than the predetermined size for filtration falls to a second outlet through which it is removed. Generally this second outlet is arranged at the bottom, rear or side of the rotary sieve since the liquid falls towards it by gravity and so on! It is easily removed.
    10
    Some of the applications of the rotary sieve of discs of the present invention are the fine grinding in the pretreatment of wastewater, the primary treatment in substitution of the primary decanter, in the sieving of sludge, in canning industries of fish, in canning industries of vegetables , in the agricultural industry, in the sugar industry, in 15 the beer industry, in the wine industry, in the paper industry, in the mining industry, in paint industries, in washing tunnels, in chemical industry and in general for everything what should be screened or filtered.
    DESCRIPTION OF THE DRAWINGS
    twenty
    To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization thereof, a set of drawings is accompanied as an integral part of said description. where, with an illustrative and non-limiting nature, the following has been represented:
    Figure 1.- Shows a perspective view of the rotary sieve.
    Figure 2a.- Shows a sectional view of the rotary sieve.
    30
    Figure 2b.- Shows a sectional view of the rotary screen in an embodiment in which the discs and / or the scrapers comprise stripes.
    Figure 2c.- It shows a zoom of the filter body in which the discs are seen and their discs
    the scrapers that are arranged between them.
    Figure 3a.- Shows a sectional view of the rotary sieve in an embodiment in which it comprises arcs for use with high density liquids.
    5
    Figure 3b.- Shows a sectional view of the rotary screen of Figure 3a in an embodiment in which the discs and / or the scrapers comprise grooves to help remove the possible solids that have been cast between the discs by having an intermediate size .
    10 Figure 3c.- Shows a sectional view of the rotary sieve of Figure 3a in an embodiment in which the discs comprise teeth in its outer perimeter.
    Figure 3d.- It shows a zoom of the filter body of the rotary sieve of Figure 3a in which the discs, arcs and scrapers that are arranged between them are appreciated.
    fifteen
    PREFERRED EMBODIMENT OF THE INVENTION
    An example of embodiment of the present invention is described below with the aid of Figures 1 to 3.
    twenty
    The rotary screen is seen, in a perspective view in Figure 1, and is of the type comprising at least one inlet for a liquid to be filtered (1), a filtering body (3) and two outlets (6, 2). The first exit (6) which is where the elements that were in the Kquido to be filtered and that are of a size larger than the screening size and have not passed 25 through the filtering body (3). The second outlet (2) which is where the liquid already filtered comes out.
    Figure 1 also shows bearings (5) that support the radial stress of the axis of rotation (11) to which the discs (8) are attached.
    30
    The key to the rotary sieve of the present invention is that the filtering body (3) comprises a plurality of discs (8) parallel, concentric, and separated from each other by a distance (d) corresponding to the screening size. Said discs (8) revolve around an axis of rotation (11) to which they are attached.
    It is important to note that in this rotary sieve, as the disks (8) have a configuration in the form of a circle, the filtering is carried out according to the particles that fit between the disks (8) and those that do not. That is, the liquid does not have to go through any mesh.
    5 In the state of the art, the liquid generally had to pass through two meshes. In the rotary screen of the present invention, the elements that are in the liquid to be filtered and that have a size larger than the screening size (d), cannot pass between consecutive discs (8) and are hooked to said discs (8 ) around its circular perimeter.
    10 As the discs (8) rotate around the axis of rotation (11), they move in their turn the elements that have not passed through it. Finally these elements reach the first exit (6) where they leave the rotary sieve.
    Figures 2a and 2b show some examples of realization in which the
    15 inlet (1) and outlets (2, 6) of the sieve and the filter body (3). In an exemplary embodiment, the disks (8) can be connected to a hollow central axis that rotates concentrically with the axis of rotation (11) so that the disks (8) are interconnected in solidarity and move as a whole.
    In an exemplary embodiment such as that shown in said figures 2a and 2b, the rotary screen further comprises a disk scraper (10) disposed in the filtering body (3), in correspondence with the first outlet (6). The scraper comprises a plurality of elements that are arranged between the discs (8), in the distance (d) that is between them corresponding to the desired screening size.
    25
    Figure 2c shows a zoom of the filtering body (3) in the area where it collaborates with the disk scraper (10). This disk scraper (10) is intended to facilitate the separation between the elements of the liquid that have been filtered and the discs (8), in the perimeter of which said elements have remained.
    30
    Also, as can be seen in Figures 2a-2b and 3a-3c, the rotary sieve can comprise an element discharge ramp arranged in correspondence with the first outlet (6). The discharge ramp facilitates the exit of the elements that have not passed the sieve due to its large size. Preferably the discharge ramp is arranged at one end
    of the disk scraper (10) so that the elements slide along the discharge ramp from the disk scraper (10).
    In the exemplary embodiment shown in Figure 2b, the disc scraper (10) and / or the discs (8) themselves additionally comprise strips (13, 12). The strips (13) of the disc scraper (10) are recessed in the shape of semicircles and are arranged in the direction towards the first exit (6) which is the direction towards which the solid elements that have not passed the screening must fall . In the discs (8) the disc strips (12) are arranged in the opposite direction so that when they cross they expel the solids better. Said 10 disc strips are arranged on the faces that face other equal faces of the adjacent discs (8).
    Both the stripes (13) of the disk scraper (10) and the disk strips (12) are designed to allow a better release of the elements that are filtered.
    fifteen
    In another exemplary embodiment such as that shown in Figure 3c, the discs (8) comprise teeth (17) along their entire circular perimeter. These teeth (17) also have the purpose of allowing a better drag of the elements that do not go up on the outside of the discs (8) and that do not pass the screening.
    twenty
    Also, in cases where the rotary sieve is to be used to filter high viscosity liquids, the sieve can comprise a plurality of arcs (15) that allow the light to be enlarged between discs (8), that is, they allow to increase the distance between them. This example is observed for example in Figures 3a-3d These arcs (15) are fixed in the liquid inlet (1) and do not rotate as the filtering body (3).
    The arches (15) are arranged between consecutive discs. In the embodiments in which the rotary sieve comprises arcs (15) part of the discs (8) are replaced by said arcs (15) so that they are arranged as a disk-arc-disk and so on! successively along the filter body (3).
    This embodiment is intended to be used when the sieve is to be used to filter very viscous liquids, such as sludge. In these cases, the liquid being so dense sticks to the walls of the discs (8) and continues to rotate with the rotation of the disc (8) continuously.
    When adding the arcs (15) between consecutive disks (8), a first filtering is carried out in the area that is next to the liquid inlet (1) and then the liquid passes between the disks (8), which in this realization they are more separated from each other than in the previously described embodiments. This is because the arcs (15) are arranged between the discs (8). 5 This prevents the very viscous liquid from sticking between the discs (8) and does not fall into the second outlet (2).
    In an exemplary embodiment in which the liquid to be filtered is very viscous and the rotary sieve comprises arcs (15), the distance (d) of separation between discs (8) is the result of the sum 10 of the distance (d ' ) between a disc (8) and a consecutive arc (15) plus the width (a) of the arc (15) plus the distance (d ') between the arc (15) and a consecutive disc (8).
    In this case, for example, if the original distance (d) between disks is 2 mm and a disc is removed and replaced by an arc (15) of 3 mm, after the arc (15) which can be for example 15 arc length between about 40 mm and about 50 mm, the light remaining between the two discs (8) that flank the arc (15) is 2mm away between a disc (8) and the position of the arc (15) , plus 3 mm wide arc (15), plus another 2 mm distance between the arc position (15) and the next disc (8). That is, the actual distance (d) between discs (8) in this embodiment is 7 mm and this allows the viscous liquid to fall between discs (8) to 20 the second outlet (2).
    In figure 1 it shows an embodiment in which the rotary sieve additionally comprises a side shield (7) arranged in correspondence with the perimeter of the discs (8) of the sides of the filtering body (3) so that neither liquid nor solid between the discs (8) and the sides (walls) of the rotary sieve body.
    The rotary screen can also additionally comprise a lower scraper (16) such as that seen in Figures 3a-3c. The lower scraper (16) is arranged after the first exit (6) and comprises a plurality of flat projections configured to be arranged between the discs (8). The lower scraper (16) allows to remove the thick liquids and the elements contained in the liquid that if they have passed the screening but have been stuck in the discs (8). Thanks to the lower scratches (16) these elements are separated from the discs (8) and come out with the liquid already filtered by the second outlet (2).
    Preferably the pious projections of the lower scraper (16) are a plurality of lower scraper discs as seen in any of said figures 3a-3c.
    The scraper (10), the discs (8) and the arches (15) can be made of any type of 5 materials, both metallic and plastic and / or polyester. They can also be ceramic materials and / or materials with conventional thermochemical treatments such as cementing, nitriding, boring and others.
    权利要求:
    Claims (10)
    [1]
    R E I V I N D I C A C I O N E S
    1.- Rotary sieve of the type that includes at least:
    -an entry for a liquid to be filtered (1),
    5 -a filter body (3),
    -a first exit (6) through which the elements that were in the liquid to be filtered and that are of a size larger than the screening size and have not passed through the filtering body
    (3), and
    -a second outlet (2) through which the liquid already filtered comes out,
    10 characterized in that the filtering body (3) comprises a plurality of discs (8) parallel, concentric, and separated from each other at least a distance (d) corresponding to the screening size, and said discs (8) revolve around a pivot shaft (11) to which they are attached.
    15 2. Rotary sieve according to claim 1 characterized in that it further comprises
    a disk scraper (10) disposed in the filter body (3), in correspondence with the first outlet (6), in contact with the discs (8).
    [3]
    3. - Rotary screen according to claim 1 characterized in that it comprises a ramp of 20 discharge of elements arranged in correspondence with the first outlet (6).
    [4]
    4. - Rotary sieve according to claims 2 and 3 characterized in that the discharge ramp is arranged at one of the ends of the disk scraper (10) corresponding to the first outlet (6).
    25
    [5]
    5. - Rotary sieve according to claim 2 characterized in that the pieces of the disk scraper (10) additionally comprise grooves (13) which are recesses with semicircular shape oriented towards the first outlet (6).
    30 6. Rotary screen according to claim 1 characterized in that the discs (8) comprise
    disc streaks (12) on the faces that face other equal faces of the adjacent disks (8).
    [7]
    7. - Rotary screen according to claims 5 and 6, characterized in that the disc strips (12) are oriented in the opposite direction to the disc scraper strips (10).
    [8]
    8. - Rotary screen according to claim 1 characterized in that the discs (8) comprise 5 teeth (17) along its entire circular perimeter.
    [9]
    9. - Rotary screen according to claim 1 characterized in that it comprises a plurality of arcs (15) which are arranged between consecutive discs (8).
    10. 10. Rotary screen according to claim 9 characterized in that the arcs (15) are fixed in
    the liquid inlet (1).
    [11]
    11. - Rotary sieve according to claim 9 characterized in that the separation between discs (8) is equal to the sum of the distance (d ’) between a disc (8) and a consecutive arc (15) plus the
    15 width (a) of the arc (15) plus the distance (d ’) between the arc (15) and a consecutive disk (8).
    [12]
    12. - Rotary screen according to claim 11 characterized in that it additionally comprises a side shield (7) arranged in correspondence with the perimeter of the discs (8) on the sides of the filtering body (3).
    twenty
    [13]
    13. - Rotary screen according to claim 1 characterized in that it additionally comprises a lower scraper (16) arranged after the first outlet (6) comprising a plurality of flat projections configured to be arranged between the discs (8).
    25 14.- Rotary screen according to claim 13 characterized in that the flat projections are
    a plurality of lower scraper discs.
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    同族专利:
    公开号 | 公开日
    ES2646102B1|2018-10-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2894632A|1957-04-11|1959-07-14|Komline Sanderson Eng Corp|Drum disc filter|
    US20110114552A1|2009-11-18|2011-05-19|Takai Tofu & Soymilk Equipment Co.|Solid-liquid separator using roller system|
    US20150290564A1|2014-04-11|2015-10-15|Advanced Filtration Technologies Inc.|Rotary disc filter device|
    法律状态:
    2018-10-16| FG2A| Definitive protection|Ref document number: 2646102 Country of ref document: ES Kind code of ref document: B1 Effective date: 20181016 |
    2019-09-12| FA2A| Application withdrawn|Effective date: 20190906 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630765A|ES2646102B1|2016-06-07|2016-06-07|ROTARY SIZE|ES201630765A| ES2646102B1|2016-06-07|2016-06-07|ROTARY SIZE|
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