Cleaning device for plate-and-frame filter press

Abstract

The utility model discloses a cleaning device for a plate-and-frame filter press, which comprises a filter press, a plurality of filter plates capable of sliding in the left-right direction and a plate pulling trolley used for driving the filter plates to slide are mounted on the filter press, and the cleaning device further comprises a support fixedly arranged above the filter press and provided with a plurality of lifting assemblies. Contact vibration assemblies are fixedly arranged at the lower ends of the multiple lifting assemblies, a driving mechanism used for driving the lifting assemblies to drive the contact vibration assemblies to make contact with or be separated from the upper end of the filter plate is further installed on the support, and the driving mechanism and the contact vibration assemblies are electrically connected with the control system. After sludge filter pressing of the filter press is dewatered, the driving mechanism is started to enable the lifting assembly to drive the contact vibration assembly to make contact with the upper end of the filter plate, and in the process that the plate pulling trolley drives the filter plate to slide to unload a sludge filter cake, vibration force generated by the contact vibration assembly to the filter plate enables the locally-adhered sludge filter cake to be rapidly separated; and residual sludge residues in the filter holes are vibrated and separated, so that the high efficiency of filter-press sludge dewatering is ensured.

Description

Technical Field

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

[0002] A sludge plate and frame filter press is a mechanical device used for solid-liquid separation, commonly used in the sludge dewatering process of waterworks to reduce the sludge volume and facilitate subsequent transportation and processing. The design principle of a sludge plate and frame filter press is to apply pressure to filter the water in the sludge through filter cloth or other filter media and then discharge it, thereby achieving solid-liquid separation. The working principle of a sludge plate and frame filter press is roughly as follows: the water-containing sludge is fed into the filter chamber of the filter press, which is usually composed of a diaphragm or metal filter plates separated by filter cloth. Then, pressure is applied through the hydraulic system, so that the sludge is squeezed by the filter plates, forcing the water through the filter cloth and into the filtrate collection system, while the solid sludge is trapped on the filter cloth to form a filter cake.

[0003] In the prior art, the overall dryness and wetness of the mud cake formed after sludge dehydration in the filter chamber of a plate and frame filter press is not very uniform. Some parts have high moisture content, while others have low moisture content. As a result, the mud cake generally falls off automatically when the filter plates are moved by the plate-pulling trolley of the plate and frame filter press. However, sometimes, due to the high moisture content of some mud cakes, some residual filter cake may adhere to the surface of the filter plates. This long-term residue will emit an odor and affect the filtration efficiency of the plate and frame filter press. Therefore, the utility model proposes a cleaning device for a plate and frame filter press to solve the above technical problems. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide a cleaning device for a plate and frame filter press. When the filter press finishes filtering and dewatering the sludge, the control system starts the driving mechanism to drive the several lifting groups to drive the contact vibration components to contact the upper end of the filter plate, so that in the process of the plate pulling trolley driving the filter plate to slide left and right on the filter press to remove the sludge filter cake, the vibration force generated by the contact vibration component on the filter plate can quickly separate the sludge filter cake locally adhered to the filter plate, and can also vibrate and separate the sludge residue remaining in the filter hole, so that the filter plate as a whole maintains an efficient cleaning effect, thereby ensuring the high efficiency of the filter press when filtering and dewatering the sludge; the overall structural design is simple, and has good implantation adaptability with the existing plate and frame filter press, which helps to improve the economic benefits of sludge dewatering enterprises.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is to design a cleaning device for a plate and frame filter press, including a filter press, on which are installed several filter plates that can slide along the left and right directions and a pulling plate trolley for driving the filter plates to slide along the left and right directions. It also includes a bracket fixed above the filter press, on which are provided several lifting assemblies, and contact vibration assemblies are fixed at the lower ends of several of the lifting assemblies. The bracket is also equipped with a driving mechanism for driving the several lifting assemblies to drive the contact vibration assemblies to contact or disengage with the upper ends of the filter plates, and the driving mechanism and the contact vibration assemblies are both electrically connected to the control system.

[0006] The utility model discloses a cleaning device for a plate and frame filter press. When the filter press finishes filtering and dewatering the sludge, the control system starts the driving mechanism to drive the several lifting groups to drive the contact vibration components to contact the upper end of the filter plate. As a result, in the process of the plate pulling trolley driving the filter plate to slide left and right on the filter press to remove the sludge filter cake, the vibration force generated by the contact vibration component on the filter plate can quickly separate the sludge filter cake locally adhered to the filter plate, and can also separate the sludge residue remaining in the filter hole from the vibration, so that the filter plate as a whole maintains an efficient cleaning effect, thereby ensuring the high efficiency of the filter press when filtering and dewatering the sludge; the overall structural design is simple, and has good implantation adaptability with the existing plate and frame filter press, which helps to improve the economic benefits of sludge dewatering enterprises.

[0007] The preferred technical solution is that the contact vibration assembly includes a horizontal baseplate fixed to the lower ends of several of the lifting assemblies. A plurality of rollers spaced horizontally and spaced apart are rotatably mounted on the lower end surface of the horizontal baseplate, with the roller axes positioned in the front-to-back direction. The horizontal baseplate is also mounted with a plurality of vibration motors electrically connected to the control system. The contact vibration assembly has an ingenious and rational structural design. The rollers make rolling contact with the upper ends of the filter plates, ensuring smooth sliding of the filter plates by the plate-pulling trolley on the filter press to remove sludge cake.

[0008] A further preferred technical solution is that the lower end surface of the horizontal base has a downwardly opening mounting groove, and the plurality of rollers are mounted within the mounting groove, with the lower side surfaces of the rollers protruding outside the lower end of the mounting groove. The rollers are mounted within the mounting groove of the lower end surface of the horizontal base, simplifying installation and ensuring smooth preparation and implementation of the cleaning device of the present invention.

[0009] A further preferred technical solution is that a plurality of the vibration motors are spaced apart and distributed on the upper end surface of the horizontal base plate. The vibration motors are simple to install and well-positioned, without disrupting the normal operation of the filter press. Furthermore, the vibration force generated can be quickly, evenly, and efficiently transmitted to the horizontal base plate and roller, ensuring that the contact vibration assembly effectively vibrates and cleans the filter plates.

[0010] A further preferred technical solution is that the bracket is an n-shaped bracket 1, the lower end of one side arm of the bracket is fixed to the left end of the upper end face of the filter press, and the lower end of the other side arm is fixed to the right end of the upper end face of the filter press, and the upper end face of the top plate of the bracket is fixed with an n-shaped bracket 2, and the lifting assembly includes two groups, one group of the lifting assemblies is located at the left end of the top plate of the n-shaped bracket 2, and the other group of the lifting assemblies is located at the right end of the top plate of the n-shaped bracket 2, and the driving mechanism is installed on the top plate of the n-shaped bracket 2, and the lower end of the lifting assembly is movable through the through hole opened on the top plate of the bracket and extends to the bottom of the bracket. The design quantity and position layout of the lifting assembly are relatively reasonable, thereby providing good horizontal support for the horizontal base plate, ensuring that the lower sides of the several rollers on the lower end face of the horizontal base plate can effectively roll in contact with the upper end face of the filter plate, and further ensuring that the contact vibration assembly has a good vibration cleaning effect on the filter plate.

[0011] A further preferred technical solution is that the lifting assembly includes a screw and an internal threaded sleeve, the internal threaded sleeve is rotatably installed in a through hole located at the left or right end of the top plate of the N-shaped bracket 2, the screw thread is threadedly connected to the internal threaded sleeve, the upper peripheral side of the internal threaded sleeve is fixedly provided with a driven wheel located above the top plate of the N-shaped bracket 2, or the lower peripheral side of the internal threaded sleeve is fixedly provided with a driven wheel located below the top plate of the N-shaped bracket 2, the driving mechanism includes a bidirectional motor fixedly provided on the top plate of the N-shaped bracket 2, the output shaft of the bidirectional motor is provided with a driving wheel, and the driving wheel is synchronously driven with the driven wheels on the two sets of lifting assemblies through a synchronous belt. The structural design of the lifting assembly and the driving mechanism are both relatively simple, and the feasibility of preparation and implementation is high, thereby ensuring that the cleaning device of the present invention can be smoothly prepared and implemented.

[0012] A further preferred technical solution is that the lower end of the lifting assembly is connected to the upper end surface of the horizontal base plate through a shock absorbing assembly, the shock absorbing assembly includes a connecting rod and a pull rod, the upper end of the connecting rod is fixedly connected to the lower end of the screw of the lifting assembly, the lower end of the connecting rod has a cavity inside, an elastic assembly is installed inside the cavity, the upper end of the pull rod is movable through the through hole at the bottom of the connecting rod and connected to the elastic assembly, and the lower end of the pull rod is fixedly connected to the upper end surface of the horizontal base plate. The shock absorbing assembly has a simple structural design, the vibration force generated by the vibration motor is transmitted to the filter plate through the horizontal base plate and the roller body, thereby reducing the adhesion of the filter cake on the surface of the filter plate and completely detaching it, and the elastic assembly can absorb the vibration force, weakening the vibration force transmitted to the filter press, and preventing the vibration force from damaging other components of the filter press.

[0013] A further preferred technical solution is that the elastic component includes a spring, the upper end of which is fixed to the top of the cavity, the lower end of which is fixedly provided with a connecting seat, the connecting seat having a downwardly opening arcuate groove, the upper end of the pull rod being fixedly provided with a ball head, the ball head being movable and limited and snap-fitted into the arcuate groove of the connecting seat. The elastic component has a simple structural design, high feasibility of manufacture and implementation, and strong practicality.

[0014] The advantages and beneficial effects of the utility model are:

[0015] 1. The utility model is a cleaning device for a plate and frame filter press. When the filter press finishes filtering and dewatering the sludge, the control system starts the driving mechanism to drive the several lifting groups to drive the contact vibration components to contact the upper end of the filter plate. As the plate pulling trolley drives the filter plate to slide left and right on the filter press to remove the sludge filter cake, the vibration force generated by the contact vibration component on the filter plate can quickly separate the sludge filter cake locally adhered to the filter plate, and can also separate the sludge residue remaining in the filter hole from the vibration, so that the filter plate as a whole maintains an efficient cleaning effect, thereby ensuring the high efficiency of the filter press when filtering and dewatering the sludge; the overall structural design is simple, and has good implantation adaptability with the existing plate and frame filter press, which helps to improve the economic benefits of sludge dewatering enterprises.

[0016] 2. The structure design of the contact vibration component is ingenious and reasonable. The roller body is in rolling contact with the upper end of the filter plate, ensuring that the plate pulling trolley drives the filter plate to slide left and right on the filter press to remove the sludge filter cake smoothly.

[0017] 3. Several vibration motors are spaced apart on the upper end surface of the horizontal base plate. The vibration motors are simple to install and have a reasonable layout, which will not interfere with the normal operation of the filter press. At the same time, the vibration force generated can be quickly, evenly, and efficiently transmitted to the horizontal base plate and roller body, ensuring that the contact vibration assembly has a good vibration cleaning effect on the filter plate.

[0018] 4. The design quantity and position layout of the lifting components are relatively reasonable, which provides good horizontal support for the horizontal base plate, ensuring that the lower sides of the rollers on the lower end surface of the horizontal base plate can effectively roll in contact with the upper end surface of the filter plate, and further ensuring that the contact vibration component has a good vibration cleaning effect on the filter plate.

[0019] 5. The structure of the shock-absorbing component is simple in design. The vibration force generated by the vibration motor is transmitted to the filter plate through the horizontal base plate and the roller body, thereby reducing the adhesion of the filter cake on the surface of the filter plate and completely detaching it. At the same time, the elastic component can absorb the vibration force, weaken the vibration force transmitted to the filter press, and avoid damage to other parts of the filter press caused by the vibration force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the main structure of a cleaning device for a plate and frame filter press according to the present invention (partial cross-section);

[0021] Figure 2 yes Figure 1 A partial enlarged view of the H in the middle;

[0022] Figure 3 yes Figure 1 A local enlarged view of the S in the middle;

[0023] Figure 4 This is a diagram showing the installation relationship of the roller on the base plate.

[0024] In the figure: 1. filter press; 2. filter plate; 3. plate pulling trolley; 4. bracket; 5. N-shaped bracket 2; 6. lifting assembly; 7. driving mechanism; 8. contact vibration assembly; 9. shock absorption assembly; 6-1. screw; 6-2. internal threaded sleeve; 6-3. driven pulley; 7-1. bidirectional motor; 7-2. driving pulley; 7-3. synchronous belt; 8-1. horizontal base plate; 8-2. roller body; 8-2a. mounting groove; 8-3. vibration motor; 9-1. connecting rod; 9-1a cavity; 9-2. spring; 9-3. connecting seat; 9-4. pull rod; 9-4a. ball head. DETAILED DESCRIPTION

[0025] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] Example

[0027] like Figures 1 to 4 As shown, the utility model is a cleaning device for a plate and frame filter press, comprising a filter press 1, on which are mounted a plurality of filter plates 2 capable of sliding in the left and right directions and a plate pulling trolley 3 for driving the filter plates 2 to slide in the left and right directions. The utility model also comprises a bracket 4 fixedly mounted above the filter press 1, on which a plurality of lifting assemblies 6 are mounted, and a contact vibration assembly 8 is fixedly mounted at the lower end of the plurality of lifting assemblies 6. A driving mechanism 7 is further mounted on the bracket 4 for driving the plurality of lifting assemblies 6 to drive the contact vibration assembly 8 to contact or disengage with the upper end portion of the filter plate 2, and the driving mechanism 7 and the contact vibration assembly 8 are both electrically connected to the control system.

[0028] Preferably, the contact vibration assembly 8 includes a horizontal substrate 8-1, which is fixed to the lower end of several of the lifting assemblies 6. The lower end surface of the horizontal substrate 8-1 is rotatably mounted with several rollers 8-2 distributed at intervals along the left and right directions, and the roller axes of the rollers 8-2 are located in the front and back directions. Several vibration motors 8-3 electrically connected to the control system are also installed on the horizontal substrate 8-1.

[0029] Further preferably, the lower end surface of the horizontal base plate 8-1 has a mounting groove 8-2a opening downward, and several of the roller bodies 8-2 are installed inside the mounting groove 8-2a, and the lower side surface of the roller body 8-2 protrudes outside the lower end of the mounting groove 8-2a.

[0030] Further preferably, a plurality of the vibration motors 8-3 are distributed at intervals on the upper end surface of the horizontal substrate 8-1.

[0031] Further preferably, the bracket 4 is an n-shaped bracket 1, the lower end of one side arm of the bracket 4 is fixed to the left end of the upper end surface of the filter press 1, and the lower end of the other side arm is fixed to the right end of the upper end surface of the filter press 1, and the upper end surface of the top plate of the bracket 4 is fixed with an n-shaped bracket 2 5, and the lifting assembly 6 includes two groups, one group of the lifting assemblies 6 is located at the left end of the top plate of the n-shaped bracket 2 5, and the other group of the lifting assemblies 6 is located at the right end of the top plate of the n-shaped bracket 2 5, and the driving mechanism 7 is installed on the top plate of the n-shaped bracket 2 5, and the lower end of the lifting assembly 6 is movable through the through hole opened on the top plate of the bracket 4 and extends to the bottom of the bracket 4.

[0032] Further preferably, the lifting assembly 6 includes a screw 6-1 and an internal threaded sleeve 6-2, the internal threaded sleeve 6-2 is rotatably installed in the through hole located at the left end or right end of the top plate of the N-shaped bracket 2 5, the screw 6-1 is threadedly fitted into the internal threaded sleeve 6-2, the outer peripheral side of the upper end of the internal threaded sleeve 6-2 is fixedly provided with a driven wheel 6-3 located above the top plate of the N-shaped bracket 2 5, or the outer peripheral side of the lower end of the internal threaded sleeve 6-2 is fixedly provided with a driven wheel 6-3 located below the top plate of the N-shaped bracket 2 5, the driving mechanism 7 includes a bidirectional motor 7-1 fixedly provided on the top plate of the N-shaped bracket 2 5, and a driving wheel 7-2 is provided on the output shaft of the bidirectional motor 7-1, and the driving wheel 7-2 is synchronously driven with the driven wheels 6-3 on the two groups of lifting assemblies 6 through a synchronous belt 7-3.

[0033] Further preferably, the lower end of the lifting assembly 6 is connected to the upper end surface of the horizontal base plate 8-1 through the shock absorbing assembly 9, and the shock absorbing assembly 9 includes a connecting rod 9-1 and a pull rod 9-4. The upper end of the connecting rod 9-1 is fixedly connected to the lower end of the screw 6-1 of the lifting assembly 6, and the lower end of the connecting rod 9-1 has a cavity 9-1a inside, and an elastic assembly is installed inside the cavity 9-1a. The upper end of the pull rod 9-4 is movable through the through hole at the bottom of the connecting rod 9-1 and is connected to the elastic assembly, and the lower end of the pull rod 9-4 is fixedly connected to the upper end surface of the horizontal base plate 8-1.

[0034] Further preferably, the elastic component includes a spring 9-2, the upper end of the spring 9-2 is fixed to the top of the cavity 9-1a, the lower end of the spring 9-2 is fixed with a connecting seat 9-3, the connecting seat 9-3 has an arc-shaped groove opening downward, the upper end of the pull rod 9-4 is fixed with a ball head 9-4a, and the ball head 9-4a is movably limited and clamped in the arc-shaped groove of the connecting seat 9-3.

[0035] The working principle of the cleaning device for plate and frame filter press in this utility model is as follows:

[0036] When the filter press 1 is filtering and dewatering the sludge normally, the lower side of the roller body 8-2 on the contact vibration assembly 8 is in a disengaged state from the upper end of the filter plate 2; when the filter press 1 is filtering and dewatering the sludge, the working button of the cleaning device of the present invention is activated by the control system, and the bidirectional motor 7-1 on the driving mechanism 7 starts to work, and the driving wheel 7-2 on the output shaft of the bidirectional motor 7-1 drives the screw 6-1 on the two lifting assemblies 6 to start rotating through the synchronous belt 7-3 and the driven wheel 6-3, and the contact vibration assembly 8 drops a certain distance so that the lower side of the roller body 8-2 rolls and abuts against the upper end surface of the filter plate 2. At this time, the bidirectional motor 7-1 stops rotating; the plate pulling trolley 3 pushes the filter plates 2 from the right end to the left end one by one of the filter press 1. During this period, the vibration force generated by the vibration motor 8-3 is transmitted to the filter plate 2 through the horizontal base plate 8-1 and the roller body 8-2, thereby vibrating and separating the sludge filter cake locally adhered to the filter plate 2 (see attached Figure 1 and 2 ); After the sludge filter cake is unloaded, the working button of the cleaning device of the present invention is turned off through the control system, and the bidirectional motor 7-1 on the driving mechanism 7 starts to rotate in the reverse direction. The driving wheel 7-2 on the output shaft of the bidirectional motor 7-1 drives the screw 6-1 on the two lifting components 6 to start rotating in the reverse direction through the synchronous belt 7-3 and the driven wheel 6-3, so that the contact vibration component 8 rises a certain distance until it is reset. At this time, the lower side surface of the roller body 8-2 is separated from the upper end surface of the filter plate 2.

[0037] The utility model discloses a cleaning device for a plate and frame filter press. When the filter press finishes filtering and dewatering the sludge, the control system starts the driving mechanism to drive the several lifting groups to drive the contact vibration components to contact the upper end of the filter plate. As a result, in the process of the plate pulling trolley driving the filter plate to slide left and right on the filter press to remove the sludge filter cake, the vibration force generated by the contact vibration component on the filter plate can quickly separate the sludge filter cake locally adhered to the filter plate, and can also separate the sludge residue remaining in the filter hole from the vibration, so that the filter plate as a whole maintains an efficient cleaning effect, thereby ensuring the high efficiency of the filter press when filtering and dewatering the sludge; the overall structural design is simple, and has good implantation adaptability with the existing plate and frame filter press, which helps to improve the economic benefits of sludge dewatering enterprises.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A cleaning device for a plate-and-frame filter press, comprising a filter press (1), wherein the filter press (1) is provided with a plurality of filter plates (2) capable of sliding in the left-right direction and a plate-pulling trolley (3) for driving the filter plates (2) to slide in the left-right direction, characterized in that: The invention also includes a bracket (4) fixedly mounted above the filter press (1), wherein a plurality of lifting assemblies (6) are mounted on the bracket (4), and contact vibration assemblies (8) are fixedly mounted at the lower ends of the plurality of lifting assemblies (6). The bracket (4) is also provided with a driving mechanism (7) for driving the plurality of lifting assemblies (6) to drive the contact vibration assemblies (8) to contact or disengage with the upper end of the filter plate (2), and the driving mechanism (7) and the contact vibration assemblies (8) are both electrically connected to a control system.

2. The cleaning device for a plate and frame filter press according to claim 1, wherein: The contact vibration component (8) includes a horizontal substrate (8-1), which is fixed to the lower ends of several lifting components (6). The lower end surface of the horizontal substrate (8-1) is rotatably mounted with several rollers (8-2) spaced apart along the left and right directions, and the roller axes of the rollers (8-2) are located in the front and back directions. The horizontal substrate (8-1) is also mounted with several vibration motors (8-3) electrically connected to the control system.

3. The cleaning device for a plate and frame filter press according to claim 2, wherein: The lower end surface of the horizontal base plate (8-1) has a downwardly opening mounting groove (8-2a), and a plurality of roller bodies (8-2) are installed inside the mounting groove (8-2a), and the lower side surface of the roller body (8-2) protrudes outside the lower end of the mounting groove (8-2a).

4. The cleaning device for a plate and frame filter press according to claim 3, characterized in that: A plurality of the vibration motors (8-3) are distributed at intervals on the upper end surface of the horizontal substrate (8-1).

5. The cleaning device for a plate and frame filter press according to claim 4, characterized in that: The bracket (4) is an N-shaped bracket 1, the lower end of one side arm of the bracket (4) is fixed to the left end of the upper end surface of the filter press (1), and the lower end of the other side arm is fixed to the right end of the upper end surface of the filter press (1). The upper end surface of the top plate of the bracket (4) is fixed with an N-shaped bracket 2 (5). The lifting assembly (6) includes two groups, one group of the lifting assemblies (6) is located at the left end of the top plate of the N-shaped bracket 2 (5), and the other group of the lifting assemblies (6) is located at the right end of the top plate of the N-shaped bracket 2 (5). The driving mechanism (7) is installed on the top plate of the N-shaped bracket 2 (5). The lower end of the lifting assembly (6) movably passes through the through hole opened on the top plate of the bracket (4) and extends to the bottom of the bracket (4).

6. The cleaning device for a plate and frame filter press according to claim 5, characterized in that: The lifting assembly (6) includes a screw (6-1) and an internal threaded sleeve (6-2), the internal threaded sleeve (6-2) is rotatably installed in a through hole located at the left end or the right end of the top plate of the N-shaped bracket (5), the screw (6-1) is threadedly connected to the internal threaded sleeve (6-2), the outer peripheral side of the upper end of the internal threaded sleeve (6-2) is fixedly provided with a driven wheel (6-3) located above the top plate of the N-shaped bracket (5), or the outer peripheral side of the lower end of the internal threaded sleeve (6-2) is fixedly provided with a driven wheel (6-3) located below the top plate of the N-shaped bracket (5), the driving mechanism (7) includes a bidirectional motor (7-1) fixedly provided on the top plate of the N-shaped bracket (5), the output shaft of the bidirectional motor (7-1) is provided with a driving wheel (7-2), and the driving wheel (7-2) is synchronously driven with the driven wheels (6-3) on the two sets of lifting assemblies (6) through a synchronous belt (7-3).

7. The cleaning device for a plate and frame filter press according to claim 6, characterized in that: The lower end of the lifting assembly (6) is connected to the upper end surface of the horizontal base plate (8-1) through the shock absorbing assembly (9), and the shock absorbing assembly (9) includes a connecting rod (9-1) and a pull rod (9-4). The upper end of the connecting rod (9-1) is fixedly connected to the lower end of the screw rod (6-1) of the lifting assembly (6). The lower end of the connecting rod (9-1) has a cavity (9-1a) inside, and an elastic assembly is installed inside the cavity (9-1a). The upper end of the pull rod (9-4) movably passes through the through hole at the bottom of the connecting rod (9-1) and is connected to the elastic assembly. The lower end of the pull rod (9-4) is fixedly connected to the upper end surface of the horizontal base plate (8-1).

8. The cleaning device for a plate and frame filter press according to claim 7, characterized in that: The elastic component includes a spring (9-2), the upper end of the spring (9-2) is fixed to the top of the cavity (9-1a), the lower end of the spring (9-2) is fixed with a connecting seat (9-3), the connecting seat (9-3) has an arc-shaped groove opening downward, the upper end of the pull rod (9-4) is fixed with a ball head (9-4a), and the ball head (9-4a) is movably limited and clamped in the arc-shaped groove of the connecting seat (9-3).

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