Filter press

Abstract

The utility model provides a filter press. The filter press comprises a rack, the plurality of filter plates are movably arranged on the rack in the transverse direction; the multiple connecting structures are arranged in one-to-one correspondence with the multiple filter plates, and the connecting structures are arranged at the tops of the filter plates and can move in the vertical direction; at least one filter bag is arranged between every two adjacent filter plates, and the tops of the filter bags are connected to the connecting structures; the bottom of each filter plate is provided with at least one sealing structure, and two adjacent sealing structures can block the bottom of the filter bag; the first driving structure is arranged on the rack, and the first driving structure can drive the connecting structure to move so as to enable the filter bag to move; the second driving structure is arranged on the rack and is used for driving the filter plate to move, so that the filter bag is subjected to filter pressing through the filter plate. According to the technical scheme, the problem that the falling effect of the filter cake in the related technology is poor is effectively solved.

Description

Technical Field

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

[0002] Filter presses are the main filtration equipment in the solid-liquid separation industry, widely used in environmental protection, mining, and other fields. Horizontal filter presses, according to their structure, can be divided into plate and frame type, chamber type, and diaphragm type. The general principle is that the filter plates are tightly joined to form a filter chamber, and pressure is applied inside the chamber to complete the filtration process. After filtration, when the filter plates are pulled apart by the plate-pulling trolley, the filter cake is exposed, with one side adhering to the filter cloth. If the coal slime particle size is low, resulting in a highly adhesive filter cake surface, the filter cake cannot detach naturally.

[0003] In related technologies, to ensure filter cake detachment, a pull-plate trolley with a rapping function is used for vibration. Specifically, a cylinder is arranged inside the pull-plate trolley. After positioning, the cylinder pushes the filter plate up and down, thereby vibrating the filter cake. However, since the vibration needs to be performed in a horizontal direction, the stroke range of the cylinder is limited, resulting in poor vibration effect and thus affecting filter cake detachment. Utility Model Content

[0004] The main objective of this invention is to provide a filter press to solve the problem of poor filter cake removal in related technologies.

[0005] To achieve the above objectives, this utility model provides a filter press, comprising: a frame; multiple filter plates movably mounted on the frame in the transverse direction; multiple connecting structures corresponding one-to-one with the multiple filter plates, the connecting structures being located on the top of the filter plates and capable of moving in the vertical direction; multiple filter bags, with at least one filter bag disposed between two adjacent filter plates, the top of the filter bag being connected to the connecting structure; multiple sealing structures, with at least one sealing structure disposed at the bottom of each filter plate, two adjacent sealing structures capable of sealing the bottom of the filter bag; a first driving structure mounted on the frame, the first driving structure capable of driving the connecting structures to move so as to move the filter bags; and a second driving structure mounted on the frame, the second driving structure being used to drive the filter plates to move so as to press the filter bags through the filter plates.

[0006] Furthermore, the filter press also includes a connecting frame, which is movably mounted on the frame in the lateral direction, and the first drive structure is mounted on the connecting frame.

[0007] Furthermore, the connecting frame includes a first upright, a second upright, and a crossbar, with the crossbar connecting the first and second uprights. Both the first and second uprights are erected on the machine frame and located on both sides of the filter plate.

[0008] Further, the first driving structure comprises a driving member and a connecting member, the driving member is arranged on the first stand and / or the second stand, and the connecting member is arranged on a driving end of the driving member, and the connecting member is capable of being connected with the connecting structure.

[0009] Further, the connecting member comprises a connecting rod and a connecting block, the connecting rod is above the cross frame, the connecting block is connected with the connecting rod and extends towards the filter plate, the connecting structure is provided with a connecting groove, and the connecting block is capable of being inserted into the connecting groove.

[0010] Further, the filter press further comprises a stop member, the stop member is arranged on the top of the filter plate and below the connecting structure, the stop member protrudes from the surface of the filter plate, and the stop member is capable of stopping the filter cake in the filter bag.

[0011] Further, the stop member is provided with a guide limiting portion, and part of the structure of the filter bag is arranged in the guide limiting portion.

[0012] Further, the sealing structure comprises an elastic block, the elastic block is provided with a guide inclined surface, and the distance between the guide inclined surface and the filter plate gradually increases from the top of the filter plate to the bottom of the filter plate.

[0013] Further, the filter press further comprises a separation member, the separation member is arranged on the surface of the filter plate, the separation member extends in the vertical direction, and the sealing structure protrudes from the separation member in the direction perpendicular to the surface of the filter plate.

[0014] Further, the separation member is provided with at least one avoiding recess.

[0015] Further, the connecting structure comprises a base frame extending in the width direction of the filter plate and a connecting beam, the connecting beam is arranged on the base frame, the base frame is arranged on the top of the plate body, and a plurality of connecting protrusions are arranged on the connecting beam at intervals.

[0016] Further, the filter press further comprises a guide structure, the guide structure is arranged between the connecting structure and the filter plate, the guide structure comprises a guide column and a guide cylinder, one of the guide column and the guide cylinder is arranged on the filter plate, and the other of the guide column and the guide cylinder is arranged on the connecting structure.

[0017] The technical scheme is applied, multiple filter plates are movably arranged on the rack, multiple connecting structures and multiple filter plates are arranged in one-to-one correspondence, the connecting structure is arranged on the top of the filter plate and can move along the vertical direction. The filter bag is connected to the connecting structure. The sealing structure is arranged on the bottom of the filter plate, and the adjacent sealing structures can block the bottom of the filter bag. The first driving structure is arranged on the rack and can drive the connecting structure to move, and the connecting structure can drive the filter bag to move when moving. The second driving structure is arranged on the rack, and the second driving structure can drive the filter plate to move and press filter the filter bag through the filter plate. Through the above arrangement, the filter bag can accommodate slurry, and when press filtering, the bottom of the filter bag is sealed by the sealing structure, and then the filter bag is filled with slurry, and after filling is completed, the filter plate is driven to move by the second driving structure, and then the press filtering of the filter bag is realized. When the slurry is extruded into filter cake, the second driving structure moves away from the filter plate, and at this time, the sealing structure is opened. Then the connecting structure is driven to move by the first driving structure, and then the filter bag is driven to move, and when the filter bag moves, it can shake or vibrate, and then the filter cake in the filter bag is detached. Therefore, the technical scheme of the present application effectively solves the problem of poor filter cake detachment effect in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application. In the drawings:

[0019] Figure 1 A perspective structural schematic view of an embodiment of the filter press according to the present application is shown.

[0020] Figure 2 A perspective structural schematic view of the connecting structure of the filter press of Figure 1 when the connecting structure is not moved is shown.

[0021] Figure 3 A perspective structural schematic view of the filter press of Figure 1 after the connecting structure is moved is shown.

[0022] Figure 4 A perspective structural schematic view of the filter bag of the filter press of Figure 1 connected to the filter plate is shown.

[0023] Figure 5 A perspective structural schematic view of the connecting rack and the first driving structure of the filter press of Figure 1 is shown.

[0024] Figure 6 A perspective structural schematic view of the filter plate of the filter press of Figure 1 is shown.

[0025] Figure 7 Fig. 1 shows a perspective view of a filter according to an embodiment of the present application. Figure 6 Fig. 2 shows a perspective view of a stopper according to an embodiment of the present application.

[0026] Wherein, the above figures include the following reference signs:

[0027] 10, frame; 20, filter plate; 30, connecting structure; 31, connecting groove; 32, base frame; 33, connecting beam; 331, connecting protrusion; 40, filter bag; 50, sealing structure; 60, first driving structure; 61, driving piece; 62, connecting piece; 621, connecting rod; 622, connecting block; 70, second driving structure; 80, connecting frame; 81, first vertical frame; 82, second vertical frame; 83, cross frame; 90, stopper; 91, guiding limiting part; 100, partition; 101, avoiding recess; 110, guiding structure; 111, guiding column; 112, guiding cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without any creative work are within the protection scope of the present application.

[0029] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0030] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] As Figure 1 As shown in the present embodiment, the filter press comprises a frame 10, a plurality of filter plates 20, a plurality of connecting structures 30, a plurality of filter bags 40, a plurality of sealing structures 50, a first driving structure 60 and a second driving structure 70. The plurality of filter plates 20 are movably arranged on the frame 10 along the transverse direction. The plurality of connecting structures 30 are arranged one by one corresponding to the plurality of filter plates 20, and the connecting structure 30 is arranged on the top of the filter plate 20 and can move along the vertical direction. At least one filter bag 40 is arranged between two adjacent filter plates 20, and the top of the filter bag 40 is connected to the connecting structure 30. The bottom of each filter plate 20 is provided with at least one sealing structure 50, and two adjacent sealing structures 50 can block the bottom of the filter bag 40. The first driving structure 60 is arranged on the frame 10, and the first driving structure 60 can drive the connecting structure 30 to move to move the filter bag 40. The second driving structure 70 is arranged on the frame 10, and the second driving structure 70 is used to drive the filter plate 20 to move to press filter the filter bag 40 through the filter plate 20.

[0032] According to the technical scheme in the embodiment, the plurality of filter plates 20 are movably arranged on the rack 10, the plurality of connecting structures 30 and the plurality of filter plates 20 are arranged in one-to-one correspondence, the connecting structure 30 is arranged on the top of the filter plate 20 and can move along the vertical direction. The filter bag 40 is connected to the connecting structure 30. The sealing structure 50 is arranged on the bottom of the filter plate 20, and the adjacent sealing structures 50 can block the bottom of the filter bag 40. The first driving structure 60 is arranged on the rack 10 and can drive the connecting structure 30 to move, and the connecting structure 30 can drive the filter bag 40 to move when moving. The second driving structure 70 is arranged on the rack 10, and the second driving structure 70 can drive the filter plate 20 to move and press filter the filter bag 40 through the filter plate 20. Through the above arrangement, the filter bag 40 can contain slurry, and when the filter bag 40 is pressed, the second driving structure 70 extrudes the filter plate 20, the adjacent sealing structures 50 extrude each other to seal the bottom of the filter bag 40, and then the filter bag 40 is filled with slurry. After the filling is completed, the filter plate 20 is driven to move by the second driving structure 70, and then the filter bag 40 is pressed. When the slurry is extruded into filter cake, the second driving structure 70 moves away from the filter plate 20, and at this time the sealing structure 50 is opened. Then the connecting structure 30 is driven to move by the first driving structure 60, and then the filter bag 40 is driven to move. When the filter bag 40 moves, it can shake or vibrate, and then the filter cake in the filter bag 40 falls off. Therefore, the technical scheme of the embodiment effectively solves the problem of poor filter cake falling effect in the related art.

[0033] As shown in Figures 1 to 3 In the embodiment, the filter press further comprises a guide structure arranged between the connecting structure 30 and the filter plate 20. The guide structure guides the lifting movement of the connecting structure 30 to ensure the stability and positioning accuracy of the filter bag 40 during lifting and lowering.

[0034] As shown in Figures 1 to 3 In the embodiment, the guide structure comprises a guide rod and a guide cylinder, one of the guide rod and the guide cylinder is arranged on the connecting structure 30, and the other of the guide rod and the guide cylinder is arranged on the filter plate 20.

[0035] As shown in Figures 1 to 3 In the embodiment, the filter press further comprises a connecting frame 80 movably arranged on the rack 10 along the transverse direction, and the first driving structure 60 is arranged on the connecting frame 80. The connecting frame 80 provides stable support and guidance for the first driving structure 60 to ensure accurate movement of the filter bag 40.

[0036] As shown in Figures 1 to 3 and Figure 5As shown in the drawings, in the embodiment, the connecting frame 80 comprises a first stand 81, a second stand 82 and a cross frame 83, the cross frame 83 is connected between the first stand 81 and the second stand 82, and the first stand 81 and the second stand 82 are both arranged on the rack 10 and located on both sides of the filter plate 20. The combination of the first stand 81, the second stand 82 and the cross frame 83 forms a stable connecting frame 80 structure, which provides guidance and support for the movement of the filter bag 40. Moreover, the connecting frame 80 has high structural strength and can bear a large load, thereby ensuring the stability of the filter bag 40 during movement.

[0037] As shown in the drawings, Figures 1 to 3 and Figure 5 As shown in the drawings, in the embodiment, the first driving structure 60 comprises a driving member 61 and a connecting member 62, the driving member 61 is arranged on the first stand 81 and / or the second stand 82, and the connecting member 62 is arranged on the driving end of the driving member 61 and can be connected with the connecting structure 30. The driving member 61 can drive the lifting movement of the connecting member 62, thereby realizing the movement of the filter bag 40.

[0038] Specifically, one driving member 61 is arranged on each of the first stand 81 and the second stand 82, so that the movement of the connecting member 62 is more stable.

[0039] As shown in the drawings, Figures 1 to 3 and Figure 5 As shown in the drawings, in the embodiment, the connecting member 62 comprises a connecting rod 621 and a connecting block 622, the connecting rod 621 is located above the cross frame 83, and the connecting block 622 is connected with the connecting rod 621 and extends towards the filter plate 20. The connecting structure 30 is provided with a connecting groove 31, and the connecting block 622 can be inserted into the connecting groove 31. Through the cooperation of the connecting block 622 and the connecting groove 31, the connecting member 62 and the connecting structure 30 are quickly connected and separated, which facilitates the movement and positioning of the filter bag 40.

[0040] Specifically, the connecting block 622 is provided with a protruding part, and the connecting groove 31 is provided with an avoiding part matched with the protruding part. Through the cooperation of the protruding part and the avoiding part, the connecting block 622 and the connecting groove 31 are quickly connected and separated, thereby ensuring the stable connection between the connecting member 62 and the connecting structure 30. The design of the protruding part and the avoiding part can also avoid the shaking or falling of the filter bag 40 caused by unstable connection during lifting, thereby improving the safety of the unloading process.

[0041] As shown in the drawings, Figures 1 to 4 and Figure 6As shown, in the embodiment, the filter press further comprises a stopper 90, which is arranged on the top of the filter plate 20 and below the connecting structure 30, protrudes from the surface of the filter plate 20, and can stop the filter cake in the filter bag 40. When the filter bag 40 moves, the filter cake is separated from the filter bag through the contact and compression of the stopper 90.

[0042] As shown in the drawings, Figures 1 to 4 and Figure 6 As shown in the drawings, in the embodiment, the filter plate 20 has a first surface and a second surface, and the stopper 90 protrudes from the first surface and the second surface respectively. The above arrangement enables the filter bags 40 on both sides of the filter plate 20 to be stopped by the stopper 90, thereby improving the efficiency of the filter press.

[0043] Moreover, even if only one filter bag 40 is arranged, the stopper 90 protrudes from the first surface and the second surface respectively, so that the filter cake can be ensured to contact the stopper 90 when discharging, thereby improving the flexibility and reliability of the discharge.

[0044] Figure 6 and Figure 7 As shown in the drawings, in the embodiment, the stopper 90 is provided with a guide limiting portion 91, and part of the structure of the filter bag 40 is arranged in the guide limiting portion 91. The design principle of the guide limiting portion 91 is to ensure that the filter bag 40 can accurately contact the stopper 90 during movement through the guiding and limiting action of the guide limiting portion 91, thereby achieving efficient discharge of the filter cake.

[0045] After the filter press is completed, the connecting frame 80 is driven by the driving trolley to move to each filter bag position one by one; the first driving structure 60 drives the connecting structure 30 to move upward, and the connecting structure 30 can cooperate with the filter bag to switch the first driving structure 60 and the connecting structure 30 between the initial position and the lifting position. When the connecting structure 30 lifts upward with the filter bag 40, the stopper 90 is arranged above the cover of the filter bag 40, contacts the arc surface of the filter cake, continues to rise after the contact, and applies a corresponding force, which directly acts on the filter cake, giving the filter cake a downward force. The filter bag 40 is made of flexible material and has a certain elastic deformation amount, so that the relative displacement between the filter cake and the filter bag 40 is generated, and the adhesion between the filter cake and the filter cloth is destroyed. Thus, the discharge effect is achieved. After the discharge of one filter press assembly is completed, the connecting structure 30 returns to the initial position and moves to the next filter bag.

[0046] The guide limiting portion 91 is a strip-shaped hole.

[0047] As shown in the drawings, Figure 4As shown, in the embodiment, the filter bag 40 comprises a bag body and a pulling portion arranged at the top of the bag body, and the pulling portion is arranged in the guide limiting portion 91. Through the cooperation of the pulling portion and the guide limiting portion 91, the stable lifting of the filter bag 40 during the discharging process is realized. The arrangement of the pulling portion not only facilitates the installation and disassembly of the filter bag 40, but also ensures the linear motion of the filter bag 40 during lifting, avoiding the deflection of the filter bag 40 during the movement, which affects the discharging effect.

[0048] As shown in Figures 1 to 4 , in the embodiment, the sealing structure 50 comprises an elastic block, and a guide inclined surface is arranged on the elastic block. From the top of the filter plate 20 to the bottom of the filter plate 20, the distance between the guide inclined surface and the filter plate 20 gradually increases. The design principle of the guide inclined surface is to utilize the guiding effect of the inclined surface to facilitate the flow of water during the filter pressing process, avoiding the accumulation of water in one place and the failure to discharge. At the same time, during the filter pressing process, the guide inclined surface can guide the uniform distribution of the filtrate, improving the filtering efficiency.

[0049] The material of the elastic block is rubber or silicone. The rubber material or the silicone material has good elasticity and wear resistance, ensuring that the elastic block can provide stable supporting force during high-pressure filtration, and at the same time has a long service life.

[0050] As shown in Figure 2 , Figure 3 and Figure 6 , in the embodiment, the filter press further comprises a partition 100 arranged on the surface of the filter plate 20, and the partition 100 extends in the vertical direction. In the direction perpendicular to the surface of the filter plate 20, the sealing structure 50 protrudes from the partition 100. The filter bag 40 is divided into two parts by the partition 100, and the two parts of the filter bag 40 can move relative to each other during discharging, which helps the filter cake to fall off.

[0051] As shown in Figure 2 , Figure 3 and Figure 6 , in the embodiment, the partition 100 is provided with at least one avoiding recess 101. The design of the avoiding recess 101 enables the filter bag 40 to better adapt to the distribution of the slurry during the filter pressing process.

[0052] It should be noted that the position of the avoiding recess 101 can move between the first bag portion and the second bag portion, so that the slurry in the first bag portion and the second bag portion is more uniform.

[0053] As shown in Figures 2 to 4As shown in the embodiment, the connecting structure 30 comprises a base frame 32 extending along the width direction of the filter plate 20 and a connecting beam 33 arranged on the base frame 32, the base frame 32 is arranged on the top of the filter plate 20, and a plurality of connecting protrusions 331 are arranged on the connecting beam 33 at intervals.

[0054] Specifically, the top of the filter bag 40 is connected to the connecting protrusion 331.

[0055] As Figures 2 to 4 As shown in the embodiment, the filter press further comprises a guide structure 110 arranged between the connecting structure 30 and the filter plate 20, the guide structure 110 comprises a guide column 111 and a guide cylinder 112, one of the guide column 111 and the guide cylinder 112 is arranged on the filter plate 20, and the other of the guide column 111 and the guide cylinder 112 is arranged on the connecting structure 30. The above arrangement can make the movement of the connecting structure 30 more stable and the direction more fixed.

[0056] As Figures 1 to 4 As shown in the embodiment, the filter press further comprises a guide rail structure, the guide rail structure comprises a guide rail piece and a guide block, the guide block is provided with a guide groove, the guide rail piece is inserted into the guide groove, the guide rail piece is arranged on the rack 10, and the guide block is arranged on the filter plate 20.

[0057] In the description of the utility model, it is understood that "a plurality of" refers to two or more than two. The orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the orientation or position relationship indicated by the orientation words are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the protection scope of the utility model, the orientation words "inner, outer" refer to the inner and outer of the contour of each component.

[0058] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0059] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0060] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter press, characterized in that The pressure filter comprises a rack (10), a plurality of filter plates (20) movably arranged on the rack (10) in a transverse direction, a plurality of connecting structures (30) corresponding to the filter plates (20) and arranged on the top of the filter plates (20) and capable of moving in a vertical direction, a plurality of filter bags (40) arranged between two adjacent filter plates (20) and connected to the connecting structures (30) on the top, a plurality of sealing structures (50) arranged on the bottom of each filter plate (20) and capable of sealing the bottom of the filter bag (40), a first driving structure (60) arranged on the rack (10) and capable of moving the connecting structures (30) to move the filter bags (40), and a second driving structure (70) arranged on the rack (10) and capable of driving the filter plates (20) to press the filter bags (40) through the filter plates (20). The pressure filter further comprises a connecting rack (80) movably arranged on the rack (10) in the transverse direction, and the first driving structure (60) is arranged on the connecting rack (80). The connecting rack (80) comprises a first vertical rack (81), a second vertical rack (82), and a horizontal rack (83) connected between the first vertical rack (81) and the second vertical rack (82), and the first vertical rack (81) and the second vertical rack (82) are arranged on the rack (10) and located on both sides of the filter plates (20). The first driving structure (60) comprises a driving member (61) arranged on the first vertical rack (81) and / or the second vertical rack (82), and a connecting member (62) arranged on the driving end of the driving member (61) and capable of being connected with the connecting structure (30). The connecting member (62) comprises a connecting rod (621) located above the horizontal rack (83), and a connecting block (622) connected with the connecting rod (621) and extending towards the filter plates (20), and the connecting structure (30) is provided with a connecting groove (31), and the connecting block (622) is capable of being inserted into the connecting groove (31). The pressure filter further comprises a stop member (90) arranged on the top of the filter plate (20) and located below the connecting structure (30), the stop member (90) protrudes from the surface of the filter plate (20), and the stop member (90) is capable of stopping the filter cake in the filter bag (40). ​ ​ 2. The filter press according to claim 1, characterized in that ​ 3. The filter press according to claim 2, characterized in that ​ 4. The filter press of claim 3, wherein, ​ 5. The filter press of claim 4, wherein, ​ 6. The filter press of claim 1, wherein, ​ 7. The filter press of claim 6, wherein, The stopper (90) is provided with a guide limiting part (91), and part of the filter bag (40) is arranged in the guide limiting part (91).

8. The filter press of claim 1, wherein, The sealing structure (50) comprises an elastic block, and the elastic block is provided with a guide inclined surface; the distance between the guide inclined surface and the filter plate (20) gradually increases from the top of the filter plate (20) to the bottom of the filter plate (20).

9. The filter press of claim 1, wherein, The filter press further comprises a partition (100) arranged on the surface of the filter plate (20), the partition (100) extends along the vertical direction, and the sealing structure (50) protrudes from the partition (100) in the direction perpendicular to the surface of the filter plate (20); the partition (100) is provided with at least one avoiding recess (101).

10. The filter press of claim 1, wherein, The filter press further comprises a guide structure (110) arranged between the connecting structure (30) and the filter plate (20), the guide structure (110) comprises a guide column (111) and a guide cylinder (112), one of the guide column (111) and the guide cylinder (112) is arranged on the filter plate (20), and the other of the guide column (111) and the guide cylinder (112) is arranged on the connecting structure (30); the connecting structure (30) comprises a base frame (32) extending along the width direction of the filter plate (20) and a connecting beam (33), the connecting beam (33) is arranged on the base frame (32), the base frame (32) is arranged on the top of the filter plate (20), and a plurality of connecting protrusions (331) are arranged on the connecting beam (33) at intervals.

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