Filter press assembly and filter press having the same

Abstract

This utility model provides a filter press assembly and a filter press having the same. The filter press assembly includes: a first filter plate and a second filter plate, which are spaced apart; a first flow-through structure disposed between the first and second filter plates; and a filter bag disposed between the first flow-through structure and the second filter plate, the filter bag being used to hold the material to be filtered. The first flow-through structure has multiple flow channels, at least some of which are interconnected. Each flow channel has a first port and a second port, and at least one first port is provided on any surface of the first flow-through structure. The technical solution of this application effectively solves the problem in related technologies where the drainage medium can only guide water to the filter plate, resulting in insufficient moisture content in the filter cake.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and more specifically, to a filter press assembly and a filter press having the same. Background Technology

[0002] Currently, the most widely used drainage media in ultra-high pressure filter presses are approximately 16-mesh polyester square-hole mesh and high-mesh steel wire mesh. Polyester square-hole mesh has a large deformation capacity and can withstand the deformation caused by diaphragm bulging; it is generally placed on the outside of the diaphragm in a diaphragm filter press, adhering to the filter cloth. Steel wire mesh, on the other hand, has poorer deformation resistance but stronger strength and toughness, maintaining its porosity even under heavy loads. Therefore, it is generally directly placed on the filter plate, adhering to the filter cloth. Although these two different mesh structures are used in different locations, their principle for auxiliary drainage is the same: to provide a pathway for water to permeate through the filter cloth under high pressure, thus increasing the drainage speed. However, in reality, the drainage medium is compressed and deformed into a flat shape. This causes the drainage medium to only guide water from the filter bag to the filter plate, resulting in insufficient moisture content in the filter cake and difficulties in unloading. Utility Model Content

[0003] The main objective of this invention is to provide a filter press assembly and a filter press having the same, in order to solve the problem in the related art that the drainage medium can only guide water to the filter plate, which leads to the filter cake having an insufficient moisture content.

[0004] To achieve the above objectives, according to one aspect of the present invention, a filter press assembly is provided, comprising: a first filter plate and a second filter plate, the first filter plate and the second filter plate being spaced apart; a first flow passage structure disposed between the first filter plate and the second filter plate; and a filter bag disposed between the first flow passage structure and the second filter plate, the filter bag being used to hold the material to be filtered; wherein the first flow passage structure has a plurality of flow channels, at least some of the plurality of flow channels being interconnected, each flow channel having a first port and a second port, and at least one first port being disposed on any surface of the first flow passage structure.

[0005] Furthermore, the multiple flow channels include multiple first channels, multiple second channels, and multiple third channels. The multiple first channels extend along a first preset axis, the multiple second channels extend along a second preset axis, and the multiple third channels extend along a third preset axis. Any two of the first preset axis, the second preset axis, and the third preset axis are perpendicular to each other.

[0006] Furthermore, the first permeation structure includes a plurality of first metal parts, which are spaced apart along a first preset axis. Each first metal part has a plurality of first bends, some of which protrude toward the second filter plate, and the remaining parts of which protrude toward the filter bag.

[0007] Furthermore, the end of each first bend is a rounded transition section; the ends of the multiple first bends protruding toward the filter bag are located on the same plane.

[0008] Furthermore, the first flow-through structure also includes a second metal component, with multiple second metal components spaced apart along a second preset axis, and any first metal component being connected to at least a portion of the multiple second metal components.

[0009] Furthermore, each second metal part has a plurality of second bends, some of which protrude toward the second filter plate, and the remaining portions of which protrude toward the filter bag.

[0010] Furthermore, the filter press assembly also includes a second permeation structure, which is disposed between the filter bag and the second filter plate.

[0011] Furthermore, there are multiple filter bags, and the filter press assembly also includes a third permeation structure, with at least one third permeation structure provided between any two adjacent filter bags.

[0012] Furthermore, the filter press assembly also includes multiple elastic supports. An elastic support is provided at the bottom of both sides of the first filter plate, and an elastic support is provided at the bottom of both sides of the second filter plate. The elastic supports are used to seal the opening of the filter bag and can clamp the lower end of the first flow permeation structure.

[0013] According to another aspect of the present invention, a filter press is provided, including a filter press assembly, wherein the filter press assembly is the filter press assembly described above.

[0014] In this invention, a first filter plate and a second filter plate are spaced apart, and a first permeation structure and a filter bag are both disposed between the first and second filter plates. The first permeation structure is located between the filter bag and the second filter plate. The first permeation structure has multiple flow channels, at least some of which are interconnected. Each flow channel has a first port and a second port, and at least one first port is present on any surface of the first permeation structure. With this arrangement, when the filter press assembly is squeezed to filter water, water in the filter bag can enter the multiple flow channels and be discharged through the multiple first ports. That is, some water in the filter bag can be guided to the second filter plate, and the remaining water can be discharged through the surface of the first permeation structure that is not in contact with the filter bag and the second filter plate. This makes the drainage efficiency higher, allowing more water to be discharged. Therefore, the technical solution of this application effectively solves the problem in related technologies where the drainage medium can only guide water to the filter plate, resulting in insufficient moisture content in the filter cake. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A side view schematic diagram of an embodiment of a filter press assembly according to the present invention is shown;

[0017] Figure 2 It shows Figure 1 A partial structural diagram of the filter press assembly.

[0018] The above figures include the following reference numerals:

[0019] 11. First filter plate; 12. Second filter plate; 20. First flow permeation structure; 21. First metal part; 211. First bend; 30. Filter bag; 40. Second flow permeation structure; 50. Third flow permeation structure. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] like Figure 1 and Figure 2 As shown, in this embodiment, the filter press assembly includes: a first filter plate 11, a second filter plate 12, a first flow-through structure 20, and a filter bag 30. The first filter plate 11 and the second filter plate 12 are spaced apart. The first flow-through structure 20 is disposed between the first filter plate 11 and the second filter plate 12. The filter bag 30 is disposed between the first flow-through structure 20 and the second filter plate 12, and is used to hold the material to be filtered. The first flow-through structure 20 has multiple flow channels, at least some of which are interconnected. Each flow channel has a first port and a second port, and at least one first port is provided on any surface of the first flow-through structure 20.

[0024] In this embodiment, the first filter plate 11 and the second filter plate 12 are spaced apart, and the first permeation structure 20 and the filter bag 30 are both disposed between the first filter plate 11 and the second filter plate 12. The first permeation structure 20 is located between the filter bag 30 and the second filter plate 12. The first permeation structure 20 has multiple flow channels, at least some of which are interconnected. Each flow channel has a first port and a second port, and at least one first port is present on any surface of the first permeation structure 20. With the above arrangement, when the filter press assembly is squeezed to filter water, the water in the filter bag 30 can enter into the multiple flow channels and be discharged through the multiple first ports. That is, some of the water in the filter bag 30 can be guided to the second filter plate 12, and the remaining water can be discharged through the surface of the first permeation structure 20 that is not in contact with the filter bag 30 and the second filter plate 12. This makes the drainage efficiency higher and allows more water to be discharged. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that the drainage medium can only guide water to the filter plate, which leads to insufficient moisture content of the filter cake.

[0025] Specifically, the second port of each flow channel extends onto the surface of the first flow-through structure 20. Of course, in other embodiments, the second port of each flow channel is located inside the first flow-through structure 20.

[0026] Compared to traditional single-plane wire mesh, the technical solution of this embodiment uses thicker metal parts and a different weaving method. The metal parts are bent in the thickness direction of the first permeable structure 20, and from the side, it can be observed that the bending of the metal parts creates more pores in the thickness direction of the first permeable structure 20. This provides a complete discharge channel for the filtrate during the filtration process, preventing the filter bag 30 from clogging in the gaps of the first permeable structure 20, thereby improving the drainage speed. Furthermore, when subjected to high pressure, the thickness direction of the first permeable structure 20 needs to have a certain spatial stability; that is, the drainage path along the direction of the filter bag 30 needs to always exist, whether in the feeding stage or the pressing stage. With this type of first permeable structure 20, during the feeding and filtration processes, the filtrate first precipitates from the filter bag 30 into the first permeable structure 20, and then discharges along the direction of the first permeable structure 20 from the filtration area of ​​the filter bag 30.

[0027] Specifically, the technical solution of this embodiment optimizes the form of the first permeable structure 20, modifying the wire mesh, which only has a unidirectional drainage effect, into an omnidirectional drainage system. Bending is added in the thickness direction of the first permeable structure 20 to create a vertical flow channel. This accelerates the drainage speed of the filter press using the first permeable structure 20 as the drainage medium. The effect is more significant for coal slime with relatively large particle size and easy-to-treat properties.

[0028] like Figure 1 and Figure 2As shown, in this embodiment, the multiple flow channels include multiple first channels, multiple second channels, and multiple third channels. The multiple first channels extend along a first preset axis, the multiple second channels extend along a second preset axis, and the multiple third channels extend along a third preset axis. Any two of the first, second, and third preset axes are perpendicular to each other. The aforementioned multiple first, second, and third channels can cover a large area, thereby improving drainage efficiency.

[0029] Specifically, the two ends of each first channel are connected to different surfaces of the first flow-through structure 20, the two ends of each second channel are connected to different surfaces of the first flow-through structure 20, and the two ends of each third channel are connected to different surfaces of the first flow-through structure 20.

[0030] like Figure 2 As shown, in this embodiment, the first permeation structure 20 includes a plurality of first metal parts 21, which are spaced apart along a first preset axis. Each first metal part 21 has a plurality of first bends 211, some of which protrude toward the second filter plate 12, while the remaining parts of the first bends 211 protrude toward the filter bag 30. The first metal parts 21 have good structural strength, and the arrangement of the plurality of first bends 211 can further improve the structural strength of the first permeation structure 20, thereby preventing deformation by compression. Simultaneously, since some of the first bends 211 protrude toward the first filter plate 11, the first bends 211 can provide support, i.e., each first bend 211 is clamped between the filter bag 30 and the second filter plate 12, thus providing sufficient space between the filter bag 30 and the second filter plate 12, making it easier for water to drain.

[0031] It should be noted that a first channel is formed between the first bending portion 211 and the second filter plate 12, as well as between the first bending portion 211 and the filter bag 30; a second channel is formed between two adjacent first metal parts 21; and a third channel is formed between the second filter plate 12 and the filter bag 30.

[0032] In an embodiment not shown in the figure, the first flow-through structure is a solid block structure with multiple flow channels. The solid block structure is made of metal or other high-strength materials.

[0033] like Figure 2 As shown, in this embodiment, the end of each first bend 211 is a rounded transition portion. This design prevents scratches on the filter bag 30.

[0034] It should be noted that the design principle described above is to reduce the resistance to filtrate flow through the rounded transition section, while simultaneously preventing damage to the sharp-angled filter bag 30, thus improving its durability. This, in turn, allows for smoother filtrate flow and significantly extends the service life of the filter bag 30. Figure 2 As shown, in this embodiment, the ends of the plurality of first bends 211 protruding toward the filter bag 30 are located on the same plane. This arrangement further prevents damage to the filter bag 30, ensuring that the filter bag 30 experiences more uniform stress.

[0035] Specifically, the above-mentioned arrangement ensures that the contact surface between the filter bag 30 and the first permeable structure 20 is flat, avoiding damage to the filter bag 30 due to excessive local pressure, and also ensuring the uniform discharge of filtrate.

[0036] like Figure 2 As shown, in this embodiment, the first flow-through structure 20 further includes second metal components, and a plurality of second metal components are spaced apart along a second preset axis. Any first metal component 21 is at least partially connected to one of the plurality of second metal components. The aforementioned arrangement of the second metal components can further improve the structural strength of the first flow-through structure 20.

[0037] like Figure 2 As shown, in this embodiment, each second metal part has multiple second bends, some of which protrude toward the second filter plate 12, while the remaining portions of the multiple second bends protrude toward the filter bag 30. This arrangement allows for a larger contact area between the first permeable structure 20 and the filter bag 30, thus ensuring the structural strength of the first permeable structure 20 and preventing damage to the filter bag 30.

[0038] like Figure 1 As shown, in this embodiment, the filter press assembly further includes a second permeation structure 40, which is disposed between the filter bag 30 and the second filter plate 12. The aforementioned second permeation structure 40 further improves the drainage effect, enabling drainage from both sides of the filter bag 30. Specifically, the structure of the second permeation structure 40 is the same as that of the first permeation structure 20.

[0039] like Figure 1 As shown, in this embodiment, there are multiple filter bags 30, and the filter press assembly also includes a third permeation structure 50. At least one third permeation structure 50 is provided between any two adjacent filter bags 30. The aforementioned third permeation structure 50 can prevent two adjacent filter bags 30 from sticking together, thereby ensuring the drainage effect.

[0040] Specifically, the structure of the third permeable structure 50 is the same as that of the first permeable structure 20.

[0041] In this embodiment, the filter bag 30 has a hanging ear on its upper side, and is generally trapezoidal, with the front and rear large surfaces serving as the filter surface, each at least one square meter in size and 50 mm wide. The filter bag 30 is suspended between the first filter plate 11 and the second filter plate 12 via the hanging ear. The number of filter bags 30 is not limited to one and they can be stacked. The aforementioned first permeation structure 20 is added between the second filter plate 12 and the filter bag 30. If multiple filter bags 30 are used between the first filter plate 11 and the second filter plate 12, a third permeation structure 50 is added between the filter bags 30.

[0042] The first filter plate 11 and the second filter plate 12 are initially fixed during the feeding stage. After feeding is complete, the second filter plate 12 remains fixed, applying pressure to the outside of the first filter plate 11 and towards the filter bag 30 to ensure sufficient filtration of moisture from the filter cake in the filter bag 30. The filtrate, after being filtered through the filter bag 30, is discharged from the filter press surface through the third permeable structure 50 along the direction of the filter bag 30. Since the third permeable structure 50 acts as a drainage medium on the filter press surface, the filtration effect of the filter bag 30 is fully utilized, improving the production efficiency of the filter press.

[0043] In this embodiment, the filter press assembly further includes multiple elastic supports. One elastic support is provided at the bottom of each side of the first filter plate 11, and one elastic support is provided at the bottom of each side of the second filter plate 12. These elastic supports effectively support the filter bag 30, preventing the bottom of the filter bag 30 from extending downwards beyond the first filter plate 11 or the second filter plate 12.

[0044] Furthermore, the elastic support is used to seal the opening of the filter bag 30, and the elastic support can clamp the lower end of the first permeation structure 20. This achieves a seal on the filter bag 30, allowing it to hold the slurry.

[0045] According to another aspect of this application, a filter press is provided. The filter press of this embodiment includes a filter press assembly, which is the filter press assembly described above. The aforementioned filter press assembly improves drainage efficiency, allowing water to be discharged through any surface of the first permeable structure 20. Therefore, the filter press having the aforementioned filter press assembly also possesses the aforementioned advantages.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter press assembly, characterized in that, include: A first filter plate (11) and a second filter plate (12) are provided at intervals; The first permeable structure (20) is disposed between the first filter plate (11) and the second filter plate (12); A filter bag (30) is disposed between the first permeable structure (20) and the second filter plate (12), and the filter bag (30) is used to hold the material to be filtered; The first flow-through structure (20) has multiple flow channels, at least some of which are interconnected. Each flow channel has a first port and a second port. At least one first port is provided on any surface of the first flow-through structure (20).

2. The filter press assembly of claim 1, wherein, The plurality of flow channels include a plurality of first channels, a plurality of second channels and a plurality of third channels. The plurality of first channels extend along a first preset axis, the plurality of second channels extend along a second preset axis, and the plurality of third channels extend along a third preset axis. Any two of the first preset axis, the second preset axis and the third preset axis are perpendicular to each other.

3. The filter press assembly of claim 2, wherein, The first permeable structure (20) includes a plurality of first metal parts (21), which are spaced apart along a first preset axis. Each first metal part (21) has a plurality of first bends (211), a portion of which protrudes toward the second filter plate (12), and the remaining portion of which protrudes toward the filter bag (30).

4. The filter press assembly of claim 3, wherein, The end of each first bend (211) is an arc transition portion, and the ends of the plurality of first bends (211) protruding toward the filter bag (30) are located on the same plane.

5. The filter press assembly of claim 3, wherein, The first permeable structure (20) further includes a second metal component, and a plurality of the second metal components are spaced apart along the second preset axis direction, and any first metal component (21) is connected to at least a portion of the plurality of second metal components.

6. The filter press assembly of claim 5, wherein, Each of the second metal parts has a plurality of second bends, portions of which protrude toward the second filter plate (12), and the remainder of which protrude toward the filter bag (30).

7. The filter press assembly of claim 1, wherein, The filter press assembly further includes a second permeation structure (40), which is disposed between the filter bag (30) and the second filter plate (12).

8. The filter press assembly of claim 1, wherein, There are multiple filter bags (30), and the filter press assembly also includes a third permeation structure (50), with at least one third permeation structure (50) provided between any two adjacent filter bags (30).

9. The filter press assembly according to claim 1, characterized in that, The filter press assembly also includes multiple elastic supports. One elastic support is provided at the bottom of both sides of the first filter plate (11), and one elastic support is provided at the bottom of both sides of the second filter plate (12). The elastic supports are used to seal the opening of the filter bag (30), and the elastic supports can clamp the lower end of the first flow permeation structure (20).

10. A filter press comprising a filter press assembly, characterised in that, The filter press assembly is the filter press assembly of any one of claims 1 to 9. The filter press assembly is the filter press assembly of any one of claims 1 to 9.

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