Filter plate and plate-and-frame filter press

Abstract

The utility model provides a filter plate and plate-and-frame filter press belongs to plate-and-frame filter press technical field, the filter plate includes plate body, filter cloth, buckling subassembly, press fit subassembly, plate body middle part is equipped with feed inlet, plate body is equipped with chute, the side wall of chute is equipped with avoiding mouth, filter cloth is equipped with reinforcing part, reinforcing part is slid in chute, and the press fit subassembly is equipped with the press fit subassembly. One side edge of the filter cloth is provided with a feeding hole, the other opposite side edge of the filter cloth is provided with a limiting hole, the buckling assembly comprises a first pipe sleeve and a second pipe sleeve, the first pipe sleeve and the second pipe sleeve are fixedly arranged in the middles of the two pieces of filter cloth respectively, the first pipe sleeve and the second pipe sleeve are movably buckled together after being inserted from the two ends of the feeding hole respectively, and the pressing assembly comprises a first gland, a second gland and a locking mechanism. The first glands are fixedly arranged at the upper end and the lower end of the plate body, first limiting blocks are arranged on the first glands, the first limiting blocks are sleeved with the limiting holes, the second glands are connected to the first glands in a press fit mode, and the locking mechanism is used for locking and releasing press fit connection of the first glands and the second glands. According to the utility model, the filter cloth can be conveniently and quickly disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-frame filter presses, in particular to a filter plate and a plate-frame filter press. Background Art

[0002] The filter plate of the filter press is one of the core components of the filter press. It is arranged alternately with the filter frame to form a series of filter chambers. The surface of the filter plate is usually grooved, and the raised part is used to support the filter cloth. The edges of the filter plate and the filter frame have through holes. After assembly, a complete channel is formed to allow the suspension and washing water to enter and guide the filtrate to discharge. During the filtration process, the filter cloth between the filter plate and the filter frame acts as a sealing gasket to prevent the filtrate from passing through, while allowing the filtrate to be discharged through the filter cloth.

[0003] When installing the filter cloth, one of the two filter cloths with connected eyelets needs to be rolled into a long and thin shape, and then the filter cloth is passed through the feed port in the middle of the filter plate, and then the two sides of the front and rear filter cloths are straightened, and finally the ties at the upper and lower parts of the front and rear filter cloths are tightened to connect the front and rear filter cloths at the upper and lower parts of the filter plate. However, when the filter cloth needs to be replaced, this method takes a long time, which prolongs the downtime of the filter press and reduces the efficiency of the filter press. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a filter plate and a plate and frame filter press, which is designed to facilitate the disassembly and assembly of filter cloths.

[0005] To achieve the above-mentioned objectives, in the first aspect, the utility model provides a filter plate, comprising a plate body, a filter cloth, a buckling assembly, and a pressing assembly, wherein a feed inlet is provided in the middle of the plate body, a slide groove is provided on one opposite side of the plate body, a avoidance opening is provided on the side wall of the slide groove, a reinforcement portion is provided on one opposite side of the filter cloth, the reinforcement portion is slidably arranged in the slide groove, and a limiting hole is provided on the other opposite side of the filter cloth, the buckling assembly comprises a first pipe sleeve and a second pipe sleeve, the first pipe sleeve and the second pipe sleeve are respectively fixedly arranged at the middle parts of the two filter cloths, the first pipe sleeve and the second pipe sleeve are respectively inserted from the two ends of the feed inlet and movably buckled together, the pressing assembly comprises a first pressure cover, a second pressure cover, and a locking mechanism, the first pressure cover is fixedly arranged at the upper and lower ends of the plate body, the first pressure cover is provided with a first limiting block, the limiting hole is sleeved on the first limiting block, the second pressure cover is press-connected to the first pressure cover, and the locking mechanism is used to lock and release the press-connected connection between the first pressure cover and the second pressure cover.

[0006] The beneficial effects of the utility model include at least: by arranging reinforcement parts on the left and right sides of the filter cloth, and sliding the reinforcement parts in the slide groove, the filter cloth is easily unfolded; after the filter cloth is unfolded, the upper and lower ends of the filter cloth are locked by the pressing assembly and the locking mechanism, and the first tube sleeve and the second tube sleeve of the filter cloth are buckled together by the buckling assembly; the whole step is simple, no additional tools are required, and the replacement efficiency of the filter cloth is improved.

[0007] In addition, the filter plate according to the utility model may also have the following additional technical features:

[0008] Furthermore, the second pressure cover is provided with a first concave hole, and the locking mechanism includes a first semicircular shaft, a second semicircular shaft, and a rotating column. The first semicircular shaft is fixedly arranged on the first pressure cover, and a first semicircular slide groove is arranged on the outer circumference of the first semicircular shaft. The second semicircular shaft is fixedly arranged on the second pressure cover and is located above the first concave hole. Second limit blocks are arranged at both axial ends of the first semicircular shaft, and a second semicircular slide groove is arranged on the outer circumference of the second semicircular shaft. The first semicircular slide groove and the second semicircular slide groove can form a circular slide groove, and the second semicircular shaft is provided with a first stopper at both axial ends. Three limit blocks, a circular through hole with a diameter greater than the diameter of the second semicircular shaft, and a through groove connected to the circular through hole are provided in the middle of the rotating column, the circular through hole is sleeved on the second semicircular shaft, the edge of the rotating column extends into the first concave hole, the width of the through groove is greater than the diameter of the first semicircular shaft, and the width of the through groove is less than the diameter of the second semicircular shaft, a clamping block cooperating with the circular sliding groove is provided on the side wall of the circular through hole, the distance between the two second limit blocks is equal to the height of the rotating column, and the distance between the two third limit blocks is equal to the height of the rotating column.

[0009] Furthermore, the first gland is provided with a second concave hole, and the first semicircular shaft is located below the second concave hole.

[0010] Furthermore, a toggle member is provided on the rotating column.

[0011] Furthermore, the toggle member is a plate-shaped member, and the extension direction of the plate-shaped member is tangent to the outer circumference of the rotating cylinder.

[0012] Furthermore, a pressing block is provided on the second pressing cover. When the second pressing cover is pressed and connected to the first pressing cover, a side of the pressing block away from the second pressing cover presses against the filter cloth.

[0013] Furthermore, the first tube sleeve is provided with a stepped opening, and the end of the second tube sleeve located in the feed port is provided with a plug-in tube, and elastic grooves are arranged in an array on the outer circumference of the plug-in tube, and balls are limitedly set in the elastic grooves. The elastic grooves can provide resistance to prevent the balls from being squeezed, and the large end of the stepped opening is sleeved on the plug-in tube, and convex points are distributed in an array on the inner wall of the large end of the stepped opening, and a concave area cooperating with the balls is formed between multiple adjacent convex points.

[0014] Furthermore, the slide groove is provided with an elastic part, which is close to the avoidance port, and the filter plate also includes a rotary locking assembly, which is arranged on the plate body and is used for squeezing and relaxing the elastic part.

[0015] Furthermore, the rotary locking assembly includes a fixed block and a handle. The fixed block is fixed on the plate body. The fixed block is provided with a threaded hole. The central axis of the threaded hole is perpendicular to the extension direction of the slide groove. The handle is provided with a threaded rod. The threaded rod is inserted into the threaded hole.

[0016] In the second aspect, based on the same inventive concept, the utility model also provides a plate and frame filter press, which uses the aforementioned filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the filter plate in the utility model from a first perspective;

[0018] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 It is a structural schematic diagram of the filter plate in the utility model from a second viewing angle;

[0020] Figure 4 This is a schematic structural diagram of the first gland in an embodiment of the utility model;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of the second gland in the embodiment of the utility model;

[0023] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;

[0024] Figure 8 It is a structural schematic diagram of the locking mechanism in the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure after the first pipe sleeve and the second pipe sleeve in the utility model are buckled together;

[0026] Fig.10 for Fig. 9 A partial enlarged view of point D in the middle;

[0027] Description of main component symbols:

[0028] The plate body 100, the feed port 110, the slide slot 120, the avoidance port 121, and the elastic portion 122;

[0029] Filter cloth 200, reinforcement part 210, limiting hole 220, rotation locking assembly 230, fixing block 231, threaded hole 2311, handle 232, threaded rod 2321;

[0030] The buckle assembly 300, the first sleeve 310, the stepped opening 311, the protruding point 3111, the second sleeve 320, the plug-in tube 321, the elastic groove 3211, and the ball 3212;

[0031] Pressing assembly 400, first pressing cover 410, first limiting block 411, second recessed hole 412, second pressing cover 420, first recessed hole 422, pressing block 423, locking mechanism 430, first semicircular shaft 431, second semicircular shaft 432, rotating column 433, and toggle member 4331;

[0032] A first semicircular slide groove 434, a second limiting block 435, a second semicircular slide groove 436, a third limiting block 437, a circular through hole 438, a clamping block 4381, and a through groove 439;

[0033] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0037] In addition, the present application provides examples of various specific processes and materials, but a person skilled in the art may be aware of the application of other processes and / or the use of other materials.

[0038] Reference Figures 1 to 10, a filter plate provided by the utility model, including a plate body 100, a filter cloth 200, a buckle assembly 300, and a press assembly 400, a feed port 110 is provided in the middle of the plate body 100, a chute 120 is provided on the left and right sides of the plate body 100, a sidewall of the chute 120 is provided with an avoidance opening 121, and a reinforcement part 210 is provided on the left and right sides of the filter cloth 200, and the reinforcement part 210 is plugged into the chute 120 during assembly. By providing the reinforcement part 210, the strength of the left and right sides of the filter cloth 200 can be improved, and at the same time, when the reinforcement part 210 is plugged into the chute 120, the filter cloth 200 can be unfolded without manual unfolding. In addition, in order to enable the filter cloth to fit the surface of the front and rear ends of the plate body 100 when unfolded, the height of the chute 120 is lower than the surface of the front and rear ends of the plate body 100, and the height of the avoidance opening 121 is just flush with the surface of the front and rear ends of the plate body 100. By providing the avoidance opening 121, when the reinforcing portion 210 is inserted into the chute 120, the middle portion of the filter cloth 200 can pass through the avoidance opening 121, thereby achieving the purpose of moving the filter cloth 200 up and down. Optionally, the reinforcing portion 210 can be a metal bar, which is assembled to the edge of one end face of the filter cloth 200 by a fastener during assembly, or the reinforcing portion 210 can be two metal bars, which are clamped between the two metal bars by a fastener during assembly.

[0039] In order to fix the upper and lower ends of the filter cloth 200, a limiting hole 220 is provided on the side of the upper and lower ends of the filter cloth 200. It can be understood that in order to enhance the structural strength of the limiting hole 220, a hole sleeve can be provided at the limiting hole 220, and the hole sleeve is fixed to the limiting hole 220 during assembly, for example, by using an adhesive. In addition, the upper and lower ends of the filter cloth 200 are fixed to the plate body 100 by a pressing assembly 400. Specifically, the pressing assembly 400 includes a first pressing cover 410, a second pressing cover 420, and a locking mechanism 430. The first pressing cover 410 is fixedly arranged at the upper and lower ends of the plate body 100. The first pressing cover 410 is provided with a first limiting block 411. When fixing the upper and lower ends of the filter cloth 200, the limiting hole 220 of the filter cloth 200 is sleeved on the first limiting block 411. Optionally, the shape of the limiting hole 220 and the first limiting block 411 can be circular, square or the like. Then, the second pressing cover 420 is pressed on the first pressing cover 410 so that the upper and lower end parts of the filter cloth 200 are clamped between the first pressing cover 410 and the second pressing cover 420. In order to ensure that the second pressing cover 420 can be pressed tightly on the first pressing cover 410, a locking mechanism 430 is also provided. The pressing connection between the first pressing cover 410 and the second pressing cover 420 is locked and released through the action of the locking mechanism 430.

[0040] When the two filter cloths 200 are unfolded on the front and back of the plate body 100, the middle part of the filter cloth 200 needs to be connected to the feed port 110 to prevent the mud from leaking into the space area between the filter cloth 200 and the plate body 100. Specifically, this is achieved by a snap-fit ​​assembly 300. The snap-fit ​​assembly 300 includes a first sleeve 310 and a second sleeve 320. The first sleeve 310 and the second sleeve 320 are respectively fixed to the middle parts of the two filter cloths 200. In order to avoid the protruding first sleeve 310 and the second sleeve 320 In order to affect the unfolding of the filter cloth 200, the first tube sleeve 310 and the second tube sleeve 320 can be respectively bonded to the middle of the two filter cloths 200 during assembly, for example, by using an adhesive to fix them, and then the first tube sleeve 310 and the second tube sleeve 320 are respectively inserted from the front and rear ends of the feed port 110 until the first tube sleeve 310 and the second tube sleeve 320 are buckled together. When the filter cloth 200 needs to be replaced, the first tube sleeve 310 and the second tube sleeve 320 are first pulled apart, and then the filter cloth 200 is removed from the plate body 100.

[0041] In some optional embodiments, such as Figures 6 to 8As shown, the second gland 420 is provided with a first concave hole 422, and the locking mechanism 430 includes a first semicircular shaft 431, a second semicircular shaft 432, and a rotating column 433. The first semicircular shaft 431 is fixedly mounted on the first gland 410, and a first semicircular sliding groove 434 is provided on the outer circumference of the first semicircular shaft 431. The second semicircular shaft 432 is fixedly mounted on the second gland 420 and is located above the first concave hole 422. Second limiting blocks 435 are provided at both axial ends of the first semicircular shaft 431, and the distance between the two second limiting blocks 435 is equal to the height of the rotating column 433, so that the second limiting blocks 435 can limit the end surface of the rotating column 433 engaged with the first semicircular shaft 431. A second semicircular groove 436 is provided on the outer circumference of the second semicircular shaft 432, and third limit blocks 437 are provided at both axial ends of the second semicircular shaft 432. The distance between the two third limit blocks 437 is equal to the height of the rotating column 433, so that the third limit block 437 can limit the end face of the rotating column 433 that is engaged with the second semicircular shaft 432. A circular through hole 438 with a diameter larger than that of the second semicircular shaft 432 is provided in the middle of the rotating column 433, and a through groove 439 is provided for connecting the circular through hole 438. The width of the through groove 439 is smaller than the diameter of the second semicircular shaft 432. In this way, when the second semicircular shaft 432 is inserted into the circular through hole 438, the rotating column 433 is always located on the second semicircular shaft 432 and can rotate around the second semicircular shaft 432. The edge portion of the rotating column 433 extends into the first recessed hole 422 to facilitate the movement of the leaked portion so that the rotating column 433 rotates around the second semicircular shaft 432. The width of the through groove 439 is equal to the diameter of the first semicircular shaft 431. In this way, force is applied to the rotating column 433 so that the first semicircular shaft 431 can pass through the through groove 439 until part of it enters the circular through hole 438. A block 4381 cooperating with the circular slide groove is provided on the side wall of the circular through hole 438. When the rotating column 433 rotates 90 degrees, the block 4381 can be stuck in the first semicircular slot 434 and the second semicircular slot 436 at the same time, and the first semicircular slot 434 and the second semicircular slot 436 form a circular slot, and the rotating column 433 is locked.

[0042] In some optional embodiments, such as Figure 4 , Figure 5 , Figure 8 As shown, the first pressure cover 410 is provided with a second recessed hole 412, and the first semicircular shaft 431 is located below the second recessed hole 412. In this way, when force is applied to the rotating column 433, it is convenient to observe whether the first semicircular shaft 431 is aligned with the through groove 439. When it is not aligned, slightly rotate the rotating column 433 to extend into the first recessed hole 422.

[0043] In order to facilitate the rotation of the rotating column 433, in some optional embodiments, such as Figure 8As shown, a toggle member 4331 is provided on the rotating post 433 . When the rotating post 433 is in a free state, the toggle member 4331 extends out of the first recessed hole 422 . When the rotating post 433 is locked, the toggle member 4331 is located in the first recessed hole 422 .

[0044] In some optional embodiments, such as Figure 8 As shown, the toggle member 4331 is a plate-like member, and the extension direction of the plate-like member is tangent to the outer circumference of the rotating column 433. When the rotating column 433 is locked, the toggle member 4331 is flat in the first recessed hole 422. When the rotating column 433 is in a free state, the toggle member 4331 extends out of the first recessed hole 422, so that the rotation angle of the rotating column 433 is limited, thereby improving the efficiency of aligning the first semicircular shaft 431 with the through groove 439.

[0045] In some optional embodiments, such as Figure 6 As shown, a pressing block 423 is provided on the second pressing cover 420. When the second pressing cover 420 is pressed and connected to the first pressing cover 410, a side of the pressing block 423 away from the second pressing cover 420 presses against the filter cloth 200, thereby fixing the upper and lower ends of the filter cloth 200.

[0046] In order to lock the first sleeve 310 and the second sleeve 320 together and to facilitate separation, in some optional embodiments, as Fig. 9 , Fig.10 As shown, the first sleeve 310 is provided with a stepped opening 311, and the end of the second sleeve 320 located in the feed port 110 is provided with a plug-in tube 321, and an array of elastic grooves 3211 are provided on the outer circumference of the plug-in tube 321, and a ball 3212 is limitedly arranged in the elastic groove 3211. It can be understood that the portion of the ball 3212 exceeding half of its height is located in the elastic groove 3211. Optionally, the elastic groove 3211 can be made of an elastic member or a spring sheet can be provided in the elastic groove 3211. When the ball 3212 moves inward, the elastic groove 3211 provides a function to prevent the ball 3212 from moving inward. The large end of the stepped opening 311 is sleeved on the plug-in tube 321, and an array of convex points 3111 are distributed on the inner wall of the large end of the stepped opening 311. A concave area cooperating with the ball 3212 is formed between multiple adjacent convex points 3111. When the large end of the stepped opening 311 is completely sleeved on the plug-in tube 321, the part of the ball 3212 that leaks out of the elastic groove 3211 is limited in the concave area. When axial force is applied to the first sleeve 310 and the second sleeve 320, the convex points 3111 squeeze the ball 3212 downward, thereby separating the first sleeve 310 and the second sleeve 320.

[0047] In order to stably insert the reinforcement portion 210 of the filter cloth 200 into the slide groove 120, in some optional embodiments, such as Figure 2As shown, the slide groove 120 is provided with an elastic portion 122 , and the elastic portion 122 is close to the avoidance opening 121 . The filter plate further includes a rotation locking assembly 230 , and the rotation locking assembly 230 is provided on the plate body 100 for squeezing and relaxing the elastic portion 122 .

[0048] In some optional embodiments, such as Figure 2 As shown, the rotary locking assembly 230 includes a fixed block 231 and a handle 232. The fixed block 231 is fixed on the plate body 100. Of course, the fixed block 231 cannot resist the filter cloth 200. The fixed block 231 is provided with a threaded hole 2311. The central axis of the threaded hole 2311 is perpendicular to the extension direction of the slide groove 120. The handle 232 is provided with a threaded rod 2321. The threaded rod 2321 is penetrated in the threaded hole 2311. When the handle 232 is rotated, one end of the threaded rod 2321 penetrating the threaded hole 2311 gradually approaches the elastic part 122 and gradually squeezes the elastic part 122, so that the reinforcing part 210 is clamped.

[0049] Based on the same inventive concept, the utility model also provides a plate and frame filter press, which uses the aforementioned filter plate.

[0050] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0053] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0055] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A filter plate, characterized in that: The filter plate comprises: The plate body has a feed port in the middle, a slide groove is provided on an opposite side of the plate body, and a sidewall of the slide groove is provided with an avoidance port; A filter cloth, wherein a reinforcement portion is provided on one opposite side of the filter cloth, the reinforcement portion is slidably arranged in the slide groove, and a limiting hole is provided on the other opposite side of the filter cloth; A buckle assembly, comprising a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are respectively fixed to the middle of the two filter cloths, and the first sleeve and the second sleeve are respectively inserted from both ends of the feed inlet and then movably buckled together; A pressing assembly, the pressing assembly includes a first pressing cover, a second pressing cover, and a locking mechanism. The first pressing cover is fixed to the upper and lower ends of the plate body. The first pressing cover is provided with a first limit block. The limit hole is sleeved on the first limit block. The second pressing cover is press-connected to the first pressing cover. The locking mechanism is used to lock and release the press-connected connection between the first pressing cover and the second pressing cover.

2. The filter plate according to claim 1, characterized in that The second gland is provided with a first concave hole, and the locking mechanism comprises: A first semicircular shaft is fixedly mounted on the first gland, a first semicircular sliding groove is arranged on the outer circumference of the first semicircular shaft, and second limit blocks are arranged at both axial ends of the first semicircular shaft; A second semicircular shaft is fixedly mounted on the second gland and is located above the first concave hole. A second semicircular slide groove is arranged on the outer circumference of the second semicircular shaft. The first semicircular slide groove and the second semicircular slide groove can form a circular slide groove. Third limit blocks are arranged at both axial ends of the second semicircular shaft. A rotating column, with a circular through hole in the middle having a diameter greater than the diameter of the second semicircular shaft, and a through groove connected to the circular through hole, the circular through hole is sleeved on the second semicircular shaft, the edge of the rotating column extends into the first concave hole, the width of the through groove is equal to the diameter of the first semicircular shaft, the width of the through groove is smaller than the diameter of the second semicircular shaft, a block cooperating with the circular slide groove is provided on the side wall of the circular through hole, the distance between the two second limit blocks is equal to the height of the rotating column, and the distance between the two third limit blocks is equal to the height of the rotating column.

3. The filter plate according to claim 2, characterized in that The first pressure cover is provided with a second concave hole, and the first semicircular shaft is located below the second concave hole.

4. The filter plate according to claim 3, characterized in that A toggle piece is provided on the rotating column.

5. The filter plate according to claim 4, characterized in that The toggle member is a plate-shaped member, and the extension direction of the plate-shaped member is tangent to the outer circumference of the rotating cylinder.

6. The filter plate according to any one of claims 1 to 5, characterized in that A pressing block is provided on the second pressing cover. When the second pressing cover is pressed and connected to the first pressing cover, a side of the pressing block away from the second pressing cover presses against the filter cloth.

7. The filter plate according to any one of claims 1 to 5, characterized in that The first tube sleeve is provided with a stepped opening, and one end of the second tube sleeve located in the feed port is provided with a plug-in tube, and an array of elastic grooves is provided on the outer circumference of the plug-in tube, and balls are limitedly set in the elastic grooves. The elastic grooves can provide resistance to prevent the balls from being squeezed, and the large end of the stepped opening is sleeved on the plug-in tube, and convex points are distributed in an array on the inner wall of the large end of the stepped opening, and a concave area cooperating with the balls is formed between multiple adjacent convex points.

8. The filter plate according to any one of claims 1 to 5, characterized in that The slide groove is provided with an elastic part, and the elastic part is close to the avoidance port. The filter plate also includes a rotary locking assembly, and the rotary locking assembly is arranged on the plate body and is used for squeezing and relaxing the elastic part.

9. The filter plate according to claim 8, characterized in that The rotary locking assembly includes a fixed block and a handle. The fixed block is fixed on the plate body. The fixed block is provided with a threaded hole. The central axis of the threaded hole is perpendicular to the extension direction of the slide groove. The handle is provided with a threaded rod. The threaded rod is inserted into the threaded hole.

10. A plate and frame filter press, characterized in that: A filter plate as claimed in any one of claims 1 to 9 is used.

Images