Filter cloth cleaning device of filter press

Abstract

The utility model discloses a filter cloth cleaning device of a filter press, which belongs to the technical field of solid-liquid separation equipment and comprises a walking support, a washing pipe fitting, a lifting mechanism and an interlocking mechanism. A vertical insertion hole and a transverse insertion hole are formed in the lock seat; inserting a rod; and the driving piece is used for driving the inserting rod to be inserted downwards or leave upwards from the vertical inserting hole. The double washing pipe fittings and the multiple guide rods are adopted, the washing pipe fittings have the functions of supplying water and installing a transmission mechanism, and the four guide rods form a symmetrical constraint system, so that a lightweight stable structure is formed, the structure is compact, the lifting operation of the washing pipe fittings is stable, and the cleaning effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter cloth cleaning device of filter press belongs to solid -liquid separation equipment technical field. BACKGROUND

[0002] As the core equipment of solid -liquid separation, filter press is widely used in chemical industry, mine, environmental protection and other fields. Filter cloth is the key component of filter press to realize solid -liquid separation, and its cleanliness directly affects the filtration efficiency and filter cake moisture content. With the popularity of automatic production line, the automation and high efficiency of filter cloth cleaning process are increasingly urgent. The filter cloth cleaning device of the existing full -automatic filter press mainly has the following technical defects:

[0003] (1) heavy structure and high cost: most of the existing filter cloth cleaning devices adopt large -scale door type or bridge type frame structure, need to configure independent walking driving system, not only large material consumption, high manufacturing cost, but also complex control, many fault points, at the same time, the installation space is strict, it is difficult to adapt to the transformation demand of old workshop.

[0004] (2) poor lifting stability: in the existing filter cloth cleaning device, the lifting of the cleaning component depends on the high closed frame for guiding, the equipment height is big, and the installation and debugging are inconvenient, and the cleaning component is easy to shake and vibrate in the high -frequency start -stop process, which leads to the decline of the alignment precision of the cleaning nozzle and filter cloth, affects the cleaning effect, also can accelerate the wear of mechanical parts, shortens the service life of the device. UTILITY MODEL CONTENTS

[0005] The utility model provides a filter cloth cleaning device of filter press can rely on filter press host power walking, multi -rod guiding lifting, stable operation, especially suitable for full -automatic filter press to solve the problems existing in the prior art.

[0006] The utility model achieves the above -mentioned purposes by adopting the following technical schemes:

[0007] A filter cloth cleaning device of filter press, including walking support, water washing pipe spare, lifting mechanism and interlocking mechanism;

[0008] The water washing pipe spare is installed on the walking support through the lifting mechanism, and the lifting mechanism is used for driving the water washing pipe spare to lift;

[0009] The interlocking mechanism is used for connecting the walking support with the pull plate device in the filter press.

[0010] Specifically, the interlocking mechanism comprises:

[0011] The lock tongue rod is arranged on the pull plate device in the filter press, and a lock tongue hole is vertically formed in the lock tongue rod;

[0012] A lock seat is arranged at the lower part of the walking support, a vertical insertion hole is formed on the top surface of the lock seat, a horizontal insertion hole is formed on the vertical side of the lock seat facing the pull plate device, and the horizontal insertion hole and the vertical insertion hole are connected in cross penetration;

[0013] A plug rod is arranged at the lower part of the walking support and above the plug rod;

[0014] A driving member is used to drive the plug rod to insert downward or leave upward the vertical insertion hole;

[0015] When the pull plate device moves forward and backward, the lock tongue rod can be inserted into or left from the horizontal insertion hole under the driving of the pull plate device, and when the lock tongue rod is in the position of being inserted into the horizontal insertion hole, the lock tongue hole is coaxially penetrated with the vertical insertion hole.

[0016] Preferably, a guide short tube is arranged at the top of the vertical insertion hole in communication, and the end of the lock tongue rod is arranged in the shape of a conical frustum.

[0017] Specifically, the driving member is a gas cylinder or an electric push rod.

[0018] In one specific embodiment, the water washing pipe member comprises a horizontal water pipe and a vertical water pipe, the vertical water pipe is arranged at the top of the horizontal water pipe in communication, and the horizontal water pipe is provided with a water spraying hole.

[0019] Preferably, the filter cloth cleaning device of the filter press provided by the utility model further comprises a guide mechanism, and the guide mechanism comprises:

[0020] A plurality of guide rods arranged vertically, the guide rods are connected at the top of the horizontal water pipe;

[0021] A plurality of guide sliding sleeves arranged at the top of the walking support, the guide rods and the vertical water pipes respectively slide through the corresponding guide sliding sleeves, and the guide sliding sleeves are internally provided with self-lubricating bushings.

[0022] The front side and the rear side of the walking support are respectively provided with water washing pipe members, and one guide rod is arranged on the left side and the right side of each vertical water pipe;

[0023] The top of two adjacent vertical water pipes in front and back is connected through a rigid connecting piece, and the guide sliding sleeves outside the two vertical water pipes are mounted on the top of the walking support through connecting seats;

[0024] The top of two adjacent guide rods in front and back is connected through a rigid connecting piece, and the guide sliding sleeves outside the two guide rods are mounted on the top of the walking support through connecting seats.

[0025] Specifically, the walking support comprises two support legs, the top of the two support legs is connected through a cross beam, and the bottom of each support leg is respectively provided with a walking assembly.

[0026] The walking assembly comprises a support sleeve, the support sleeve is sleeved outside a main beam slide channel in the filter press, and the upper portion and the lower portion of the lumen of the support sleeve are respectively provided with an upper roller and a lower roller, the upper roller is used for rolling contact with the top surface of the main beam slide channel, and the lower roller is used for rolling contact with the bottom surface of the main beam slide channel.

[0027] The lock seat is mounted on the support sleeve.

[0028] Further, the filter press filter cloth cleaning device provided by the utility model further comprises a controller and an upper limit position sensor for detecting upward displacement of the water washing pipe, a lower limit position sensor for detecting downward displacement of the water washing pipe and a position sensor for detecting the position of the inserting rod.

[0029] The controller controls the operation of the gear motor according to the position signal of the water washing pipe given by the upper limit position sensor and the lower limit position sensor and controls the operation of the plate pulling device according to the position signal of the inserting rod given by the position sensor.

[0030] The lifting mechanism comprises a gear motor, and the gear motor is connected with the vertical water pipe through a gear rack transmission mechanism or a rigid chain transmission mechanism.

[0031] The gear rack transmission mechanism comprises a gear and a rack in meshing connection, the gear is connected with the output shaft of the gear motor, the rack is installed on the vertical water pipe in the vertical direction, and a groove is formed in the guide sliding sleeve and used for the rack to pass through.

[0032] The rigid chain transmission mechanism comprises a sprocket and a rigid chain in meshing connection, the sprocket is connected with the output shaft of the gear motor, and the executing end of the rigid chain is connected with the vertical water pipe through a connecting plate.

[0033] The utility model has the advantages of but not limited to:

[0034] The walking power of the filter press filter cloth cleaning device is dependent on the plate pulling device of the filter press, the connection between the cleaning device and the plate pulling device is realized through the interlocking mechanism, the cleaning device is synchronously walked when the plate pulling device moves, and the component for driving the cleaning device to walk is not additionally arranged, so that the structure is simplified.

[0035] The utility model adopts the double water washing pipe and the multiple guide rods, the water washing pipe has the functions of water supply and installation transmission mechanism, the top portions of the two vertical water pipes and the top portions of the two adjacent guide rods are connected into an entity through the rigid connecting pieces, the four guide rods form a symmetrical constraint system, the deflection force in the lifting process is effectively offset, the light weight stable structure is formed, the structure is compact, the installation space requirement is low, the lifting operation of the water washing pipe is stable, the shaking and deflection problems in the lifting process of the traditional cleaning device are solved, the trajectory of the spray head is perpendicular and accurately positioned, the cleaning effect and the service life of the device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0037] Figure 1 A structure schematic view of the filter cloth cleaning device of the filter press provided by the application;

[0038] Figure 2 A schematic view of the pull plate device and the interlocking mechanism in the locked state;

[0039] Figure 3 A schematic view of the pull plate device and the interlocking mechanism in the unlocked state;

[0040] Figure 4 A sectional view of the lock seat;

[0041] Figure 5 A schematic view of the walking support;

[0042] Figure 6 A schematic view of the internal structure of the walking assembly;

[0043] Figure 7 A schematic view of the water washing pipe and the guide mechanism;

[0044] Figure 8 A schematic view when the transmission mechanism adopts the gear and rack transmission mechanism;

[0045] Figure 9 A schematic view when the transmission mechanism adopts the rigid chain transmission mechanism;

[0046] In the drawings, 1, filter plate; 2, main beam slide; 3, pull plate device;

[0047] 100, walking support; 110, support leg; 120, cross beam; 130, walking assembly; 131, support sleeve; 132, upper roller; 133, lower roller;

[0048] 200, water washing pipe; 210, horizontal water pipe; 220, vertical water pipe;

[0049] 300, lifting mechanism; 310, gear motor; 320, gear and rack transmission mechanism; 330, rigid chain transmission mechanism; 331, connecting plate;

[0050] 400, interlocking mechanism; 410, lock tongue rod; 411, lock tongue hole; 420, lock seat; 421, vertical insertion hole; 422, horizontal insertion hole; 423, guide short pipe; 430, insertion rod; 440, driving piece;

[0051] 500, guide mechanism; 510, guide rod; 520, guide sliding sleeve;

[0052] 610, rigid connecting piece; 620, connecting seat;

[0053] 710, lower limit position sensor; 720, upper limit position sensor; 730, position sensor. DETAILED DESCRIPTION

[0054] To make the technical features of the present scheme clear, the present utility model will be described in detail below through specific implementation manners and in combination with the accompanying drawings.

[0055] It should be noted that many specific details are set forth in the following description in order to provide a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0056] The conventional filter press has two main beams, a plurality of filter plates 1 are arranged in sequence along the direction of the main beams, a main beam sliding way 2 is arranged on each main beam, and a plate puller 3 is arranged on each main beam sliding way 2. After the filter pressing is completed, the plate puller 3 slides forward and backward on the main beam sliding way 2 to pull open the filter plates 2 in sequence. The main control system of the filter press controls the oil cylinder to press and loosen, and controls the plate puller 3 to pull open the filter plates 2 and the like.

[0057] As shown in Figure 1 The filter press filter cloth cleaning device provided by the present utility model comprises a walking support 100, a water washing pipe 200, a lifting mechanism 300 and an interlocking mechanism 400.

[0058] The water washing pipe 200 is installed on the walking support 100 through the lifting mechanism 300, and the lifting mechanism 300 is used to drive the water washing pipe 200 to lift.

[0059] As shown in Figures 2-4 The interlocking mechanism 400 is used to connect the walking support 100 and the plate puller 3 in the filter press; and the interlocking mechanism 400 comprises a lock tongue rod 410, a lock seat 420, a plug rod 430 and a driving part 440.

[0060] The lock tongue rod 410 is arranged on the plate puller 3 in the filter press, and a lock tongue hole 411 is vertically arranged on the lock tongue rod 410.

[0061] As shown in Figure 4 The lock seat 420 is arranged at the lower part of the walking support 100, a vertical plug hole 421 is arranged on the top surface of the lock seat 420, a horizontal plug hole 422 is arranged on the vertical side of the lock seat 420 facing the plate puller, and the horizontal plug hole 422 and the vertical plug hole 421 are connected in cross.

[0062] The insertion rod 430 is arranged at the lower part of the walking support 100 and above the insertion rod 430.

[0063] The driving member 440 is used to drive the insertion rod 430 to insert downward or to leave upward the vertical insertion hole 421. Preferably, the top of the vertical insertion hole 421 is communicated with a guide short pipe 423. As shown in Figure 2 In the standby unlocking state, the lower end of the insertion rod 430 is located in the guide short pipe 423 but not inserted into the vertical insertion hole 421. When locking is needed, the insertion rod 430 moves downward, and the guide short pipe 423 plays a role of restricting the moving direction of the insertion rod 430. In order to clearly show the structure of each component, Figure 3 In the standby unlocking state, the lower end of the insertion rod 430 is located in the guide short pipe 423 but not inserted into the vertical insertion hole 421. When locking is needed, the insertion rod 430 moves downward, and the guide short pipe 423 plays a role of restricting the moving direction of the insertion rod 430. In order to clearly show the structure of each component,

[0064] The lower end of the insertion rod 430 is arranged as an arc surface, and the end of the lock bar 410 is arranged as a conical frustum, so as to facilitate the insertion of the insertion rod 430 into the lock hole 411 in the center and the insertion of the lock bar 410 into the horizontal insertion hole 422 in the center.

[0065] When the pull plate device moves forward and backward, the lock bar 410 can be inserted into or leave the horizontal insertion hole 422 under the driving of the pull plate device. When the lock bar 410 is in the position of being inserted into the horizontal insertion hole 422, the lock hole 411 is coaxially communicated with the vertical insertion hole 421, at this time, the driving member 440 drives the insertion rod 430 to move downward, as shown in Figure 2 When the insertion rod 430 falls, the insertion rod 430 is embedded into the lock hole 411 to realize the locking of the walking support 100 and the pull plate device, and when the insertion rod 430 is lifted, the unlocking is realized.

[0066] Preferably, the driving member 440 is a pneumatic cylinder or an electric push rod, the cylinder body of the pneumatic cylinder is hingedly arranged at the lower part of the walking support, and the cylinder rod is connected with the insertion rod.

[0067] The filter cloth cleaning device of the filter press cooperates with the main control system of the filter press, after receiving the filter pressing completion signal, controls the interlocking mechanism 400 to be connected and locked with the pull plate device 3, so that the walking support 100 can be driven by the pull plate device to move to each filter plate position, and the lifting mechanism 300 is controlled in sequence to drive the water washing pipe 200 to perform the cycle actions of descending, cleaning and ascending resetting.

[0068] As shown in Figure 5 In one specific embodiment, the walking support 100 includes two support legs 110, and the top of the two support legs 110 is connected by a cross beam 120. Usually, the support leg 110 and the cross beam 120 are welded to obtain an integrated steel structure, which is arranged above the filter plate.

[0069] The bottom of each support leg 110 is respectively provided with a walking assembly 130 connected with the main beam slide 2. The walking assembly 130 comprises a support sleeve 131 sleeved outside the main beam slide 2 in the filter press. The lock seat 420 is installed on the support sleeve 131.

[0070] As shown in Figure 6 The upper part and the lower part of the lumen of the support sleeve 131 are respectively provided with an upper roller 132 and a lower roller 133. The upper roller 132 is used for rolling contact with the top surface of the main beam slide 2, and the lower roller 133 is used for rolling contact with the bottom surface of the main beam slide 2. Generally, two groups or more of the upper roller 132 and the lower roller 133 are arranged respectively. The upper roller 132 and the lower roller 133 cooperate with each other to form vertical rolling clamping and limiting of the main beam slide 2, and ensure stable walking.

[0071] As shown in Figure 7 In one of the specific embodiments, the water washing pipe 200 comprises a horizontal water pipe 210 and a vertical water pipe 220. The vertical water pipe 220 is arranged in communication with the top of the horizontal water pipe 210. The horizontal water pipe 210 is parallel to the plate surface of the filter plate. The horizontal water pipe 210 is provided with a water spraying hole. During cleaning, water flows from the top of the vertical water pipe 220, then flows into the horizontal water pipe 210, and then is sprayed from the water spraying hole of the horizontal water pipe 210 to the filter cloth.

[0072] The filter cloth cleaning device of the filter press provided by the utility model further comprises a guide mechanism 500. In one of the specific embodiments, the guide mechanism 500 comprises a plurality of vertically arranged guide rods 510 and a plurality of guide sliding sleeves 520.

[0073] The guide rod 510 is connected to the top of the horizontal water pipe 210. The guide sliding sleeve 520 is arranged on the cross beam 120 of the walking support 100. The guide rod 510 and the vertical water pipe 220 respectively slide through the corresponding guide sliding sleeves 520. The guide sliding sleeve 520 is internally provided with a self-lubricating bushing. The guide rod 510 penetrates into the self-lubricating bushing and forms precise sliding cooperation with the self-lubricating bushing.

[0074] In one of the specific embodiments, the front side and the rear side of the cross beam 120 of the walking support 100 are respectively provided with the water washing pipe 200, which respectively washes the filter cloth on both sides of the filter plate. The left side and the right side of the vertical water pipe 220 of each water washing pipe 200 are respectively provided with a guide rod 510. There are a total of four guide rods, which form a symmetrical constraint system and can effectively offset the yawing force in the lifting process, thereby ensuring stable lifting operation.

[0075] The top of the two adjacent vertical water pipes 220 is connected through a rigid connecting piece 610. The guide sliding sleeves 520 outside the two vertical water pipes 220 are installed on the cross beam 120 of the walking support 100 through a connecting seat 620.

[0076] The top of two adjacent guide rods 510 in front and back is connected by a rigid connector 610, and the guide sleeve 520 outside the two guide rods 510 is installed on the cross beam 120 of the walking support 100 through a connecting seat 620.

[0077] In one embodiment, the lifting mechanism 300 includes a gear motor 310 connected with the vertical water pipes through a gear rack transmission mechanism 320, a rigid chain transmission mechanism 330, or other linear transmission mechanisms.

[0078] Specifically, as shown in Figure 7 and Figure 8 The gear rack transmission mechanism 320 includes meshed gears and racks, the gears are connected with the output shaft of the gear motor 310, the racks are installed vertically on the vertical water pipes 220, and the guide sleeve 520 is provided with a channel for the racks to pass through. Specifically, gears are arranged at both ends of the output shaft of the gear motor 310, and the two gears are meshed with two racks on the two vertical water pipes 220, respectively.

[0079] As shown in Figure 9 For the working condition of large lifting stroke, the transmission mechanism can use the rigid chain transmission mechanism 330. The rigid chain transmission mechanism 330 includes meshed sprockets and rigid chains, the sprockets are connected with the output shaft of the gear motor 310, and the execution end of the rigid chain is connected with the vertical water pipes 220 through a connecting plate 331. The two vertical water pipes 220 are connected together through the connecting plate 331 to realize synchronous lifting.

[0080] As shown in Figure 2 and Figure 7 The filter cloth cleaning device of the filter press provided by the utility model further includes a controller and an upper limit position sensor 720 for detecting upward displacement of the water washing pipe 200, a lower limit position sensor 710 for detecting downward displacement of the water washing pipe 200, and a position sensor 730 for detecting the position of the insertion rod 430.

[0081] Specifically, the lowering and resetting of the water washing pipe 200 are controlled by the lower limit position sensor 710 and the upper limit position sensor 720, and the lower limit position sensor 710 and the upper limit position sensor 720 are usually arranged on the cross beam 120 of the walking support 100 or on the guide sleeve 520. The lower limit position sensor 710 generally takes the rigid connector 610 at the top of the vertical water pipe as a detection point, and the upper limit position sensor 720 generally takes the connecting flange of the vertical water pipe and the horizontal water pipe as a detection point. The locking and unlocking states of the insertion rod 430 and the lock tongue rod 410 are confirmed by the position sensor 730, and the position sensor 730 is usually arranged below the vertical insertion hole 421.

[0082] The controller controls the operation of the gear motor 310 according to the position signal of the water washing pipe 200 given by the upper limit position sensor 720 and the lower limit position sensor 710, and controls the operation of the pull plate device according to the position signal of the insertion rod 430 given by the position sensor 730.

[0083] Generally, the controller adopts a PLC (Programmable Logic Controller) and is connected with the main control system of the filter press through a communication module to realize data interaction. The core control logic of the controller includes the following four stages executed in sequence:

[0084] Standby detection stage: the cleaning device is in an initial standby state, waiting for a signal of the filter press;

[0085] Interlock control stage: after the filter press completes the filter pressing, the main control system sends a command. After receiving the signal, the controller controls the pull plate device and the cleaning device to be docked and locked through the interlocking mechanism 400, and feeds back a "interlock ready" signal;

[0086] Follow-up cleaning stage: the pull plate device drives the cleaning device to move to the position of each filter plate and pause, the controller controls the lifting mechanism 300 to drive the water washing pipe 200 to ascend and descend, and sequentially cleans the filter cloth on each filter plate, and after the cleaning is completed, the controller feeds back a single completion signal; the process is repeated until all the filter plates are cleaned;

[0087] Unlocking and resetting stage: after the filter cloth on all the filter plates is cleaned, the pull plate device drives the cleaning device to return to the initial position, the controller controls the interlocking mechanism 400 to act, so that the pull plate device and the cleaning device are unlocked and separated, and the controller feeds back a cleaning cycle completion signal, and the cleaning device returns to the standby state.

[0088] Through the sequential execution of the above stages, the cleaning process is realized.

[0089] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0090] In the utility model, unless another definite provision and limitation, the terms "arrange", "install", "connect", "connect", "fix" and so on terms should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection, also can be communication;It can be direct connection, also can be indirectly connected through the intermediate medium.

[0091] The part not described in the utility model is the known technology of the technical personnel in the technical field.

Claims

1. A filter press cloth cleaning device, characterized by, The walking support, the water washing pipe, the lifting mechanism and the interlocking mechanism are included. The water washing pipe is installed on the walking support through the lifting mechanism, and the lifting mechanism is used for driving the water washing pipe to lift. The interlocking mechanism is used for connecting the walking support with the pull plate device in the filter press. The interlocking mechanism includes: The lock tongue rod is arranged on the pull plate device in the filter press, and a lock tongue hole is vertically arranged on the lock tongue rod. The lock seat is arranged on the lower part of the walking support, and a vertical insertion hole is arranged on the top surface of the lock seat. The insertion rod is arranged on the lower part of the walking support and above the insertion rod. The driving part is used for driving the insertion rod to insert downward or leave upward the vertical insertion hole. When the pull plate device moves forward and backward, the lock tongue rod can insert or leave the horizontal insertion hole under the driving of the pull plate device, and the lock tongue hole is coaxially and throughly connected with the vertical insertion hole when the lock tongue rod is in the position of inserting the horizontal insertion hole.

2. The filter press cloth washing apparatus of claim 1, wherein, The top of the vertical insertion hole is communicated with a guide short pipe, and the end of the lock tongue rod is arranged in the shape of a conical frustum.

3. The filter press cloth washing apparatus of claim 1, wherein, The driving part is a pneumatic cylinder or an electric push rod.

4. The filter press cloth washing apparatus of claim 1, wherein, The water washing pipe includes a horizontal water pipe and a vertical water pipe, and the vertical water pipe is communicated and arranged on the top of the horizontal water pipe.

5. The filter press cloth washing apparatus of claim 4, wherein, The guiding mechanism includes: A plurality of vertical guide rods are arranged, and the guide rods are connected to the top of the horizontal water pipe. A plurality of guide sleeves are arranged on the top of the walking support, and the guide rods and the vertical water pipe respectively slide through the corresponding guide sleeves, and a self-lubricating bushing is arranged in the guide sleeve.

6. The filter press cloth washing apparatus of claim 5, wherein, The front side and the rear side of the walking support are respectively provided with the water washing pipe, and one guide rod is arranged on the left and right sides of each vertical water pipe. The top of the two adjacent vertical water pipes is connected through a rigid connecting piece, and the guide sleeves outside the two vertical water pipes are installed on the top of the walking support through a connecting seat. The top of the two adjacent guide rods is connected through a rigid connecting piece, and the guide sleeves outside the two guide rods are installed on the top of the walking support through a connecting seat.

7. The filter press cloth washing apparatus of claim 1, wherein, The walking support includes two support legs, and the top of the two support legs is connected through a cross beam. The walking assembly includes a support sleeve, and the support sleeve is sleeved outside the main beam slide in the filter press. The lock seat is arranged on the support sleeve.

8. The filter press cloth washing apparatus of claim 1, wherein, A controller, an upper limit position sensor for detecting the upward displacement of the water washing pipe, a lower limit position sensor for detecting the downward displacement of the water washing pipe, and a position sensor for detecting the position of the insertion rod are further included. The controller controls the operation of the gear motor according to the position signal of the water washing pipe given by the upper limit position sensor and the lower limit position sensor, and controls the operation of the pull plate device according to the position signal of the insertion rod given by the position sensor.

9. The filter press cloth washing apparatus of claim 5, wherein, The lifting mechanism comprises a gear motor connected with the vertical water pipe through a gear rack transmission mechanism or a rigid chain transmission mechanism; The gear rack transmission mechanism comprises a gear and a rack in engagement, the gear is connected with the output shaft of the gear motor, and the rack is installed vertically on the vertical water pipe, and a channel is formed in the guide sleeve for the rack to pass through; The rigid chain transmission mechanism comprises a sprocket and a rigid chain in engagement, the sprocket is connected with the output shaft of the gear motor, and the execution end of the rigid chain is connected with the vertical water pipe through a connecting plate.

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