A diaphragm filter cleaning integrated device

Abstract

The utility model discloses a diaphragm filter pressing and cleaning integrated equipment in sludge dewatering system relates to sludge dewatering equipment technical field. Diaphragm filter pressing and cleaning integrated equipment includes diaphragm filter press, into sludge pump, press cleaning pump, filter plate automatic cleaning device, press cleaning water tank, press water pipeline, cleaning water pipeline, press cleaning water return pipeline and return spare pipeline, can realize press, and two links of cleaning share press cleaning water pump, press cleaning water tank, has simplified the pipeline arrangement, and the installation workload has reduced and the small space occupation, and, still be provided with return spare pipeline and press cleaning air exhaust valve, ensure that diaphragm filter plate is in the pressure -free state in the cleaning state, and the protection effect is played to diaphragm.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge dewatering equipment, and in particular to an integrated diaphragm filter press cleaning device in a sludge dewatering system. Background Technology

[0002] In the sludge dewatering industry, diaphragm filter presses are commonly used to achieve solid-liquid separation of sludge. The filter chamber of a diaphragm filter press consists of multiple diaphragm plates arranged at intervals. Each diaphragm plate is equipped with filter cloth. The solid-liquid mixture enters the filter chamber, where tiny solid particles are trapped by the filter cloth covering the surface of the filter plate, forming a filter cake. The liquid in the mixture is discharged through the corner holes of the filter plate, achieving solid-liquid separation of the sludge. A filter pressing chamber is formed between the diaphragm plates, where sludge enters to achieve solid-liquid separation and ultimately forms a filter cake. Each diaphragm filter plate consists of a membrane and a substrate. A bulging chamber is formed between the membrane and the substrate. During filtration, a high-pressure fluid (water) medium can be introduced to cause the filter plates to bulge and press the filter cake, reducing its moisture content. After pressing, the next step is sludge unloading. A pull-plate trolley separates the diaphragm plates, allowing the sludge cake to fall between them. However, in practical applications, factors such as sludge properties, filter cloth material, filter cloth usage time, sludge conditioning agents, and filter cloth cleanliness often cause most of the sludge cake to adhere to the filter cloth surface, making it difficult to detach automatically. Manual intervention is required, using a shovel to remove the sludge cake adhering to the filter cloth. Furthermore, the filter cloth is a key component in the filter press operation and a significant factor affecting sludge moisture content and yield. The quality and lifespan of the filter cloth directly impact production and operating costs; therefore, filter cloth maintenance is crucial. The primary method of filter cloth maintenance is cleaning. Regular cleaning maintains the cleanliness of the filter cloth, effectively reducing sludge cake adhesion to the filter cloth surface and ensuring that sludge moisture content and yield meet standards. Therefore, in actual operation, filter press filter cloths are cleaned regularly or as needed.

[0003] Currently, the filter cloths of filter presses are mainly cleaned using the following methods: The first option is to remove the filter cloth from the filter plate, soak it in water or other acidic or alkaline solvents, and then scrub it with a brush. The disadvantages of this option are that removing the filter cloth from the filter plate is labor-intensive, and after cleaning the filter cloth with a brush, it needs to be reinstalled on the filter press, which consumes a lot of manpower and time, resulting in high labor costs. This option is not suitable for large filter presses or multiple filter presses.

[0004] The second option is to use a mobile high-pressure water gun to clean each filter cloth individually. The disadvantages of this option are that the cleaning process is labor-intensive, the high-pressure water gun causes significant damage to the filter cloth during rinsing, shortening its lifespan, and consuming a large amount of tap water, increasing the wastewater treatment volume.

[0005] The third option is to configure an automatic cleaning device for the filter press, which automatically cleans the filter cloth according to the filter press's program. The disadvantage of this option is that the automatic cleaning device requires a cleaning water tank, a high-pressure cleaning water pump, and corresponding pipelines and valves, increasing the system's complexity and cost. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an integrated diaphragm filter press and cleaning device, which effectively combines the filter press system and the automatic cleaning system to achieve an integrated filter press and cleaning process. This can reduce the cost and footprint of sludge dewatering equipment, while also reducing installation workload and simplifying pipeline layout.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the diaphragm filter press cleaning integrated equipment of this utility model includes a pressing and cleaning water pump, a pressing and cleaning water tank, related pipelines and valves, etc., and the specific implementation scheme is as follows.

[0008] A diaphragm filter press cleaning integrated equipment includes a diaphragm filter press, a mud inlet pump, a press cleaning pump, an automatic filter plate cleaning device, a press cleaning water tank, a press water pipeline, a cleaning water pipeline, a press cleaning water return pipeline, and a return spare pipeline. The mud inlet pump is connected to the filter chamber of the diaphragm filter press; the press cleaning pump is connected to the press cleaning water tank; The pressing and cleaning pump is connected to the diaphragm chamber of the diaphragm filter press through the pressing water pipeline; the pressing water pipeline is equipped with a pressing water inlet pneumatic valve; The pressing and cleaning water tank is connected to the pressing water pipeline through the pressing and cleaning water return pipeline. The first connection point between the pressing and cleaning water return pipeline and the pressing water pipeline is located between the pressing and cleaning pump and the pressing water inlet pneumatic valve. The pressing and cleaning water return pipeline is equipped with a pressing and cleaning water return pneumatic valve. The automatic filter plate cleaning device is located on one side of the diaphragm filter press and is connected to the pressing water pipeline through the cleaning water pipeline. The second connection point between the cleaning water pipeline and the pressing water pipeline is located between the first connection point and the pressing water inlet pneumatic valve. The cleaning water pipeline is equipped with a cleaning device inlet pneumatic valve. The pressing and cleaning water tank is also connected to the pressing water pipeline through the return spare pipeline. The third connection point between the return spare pipeline and the pressing water pipeline is located between the pressing water inlet pneumatic valve and the diaphragm filter press. The return spare pipeline is equipped with a pressing and cleaning exhaust pneumatic valve.

[0009] Preferably, the first connection point, the second connection point, and the third connection point are connected to their respective pipelines by setting a tee pipe.

[0010] Furthermore, the integrated diaphragm filter press cleaning equipment also includes a sludge inlet pipe, through which the sludge inlet pump is connected to the filter chamber of the diaphragm filter press; the sludge inlet pipe is equipped with a filter press sludge inlet pneumatic valve.

[0011] Furthermore, the integrated diaphragm filter press cleaning equipment also includes a back-blowing air device, a back-blowing pipeline, and a back-blowing sludge return pipeline; the back-blowing air device is connected to the diaphragm chamber of the diaphragm filter press through the back-blowing pipeline, and the back-blowing pipeline is equipped with a back-blowing pneumatic valve; the back-blowing sludge return pipeline is connected to the sludge inlet pipeline, and the back-blowing sludge return pipeline is equipped with a back-blowing sludge return pneumatic valve.

[0012] Preferably, the backflush air device includes an air compressor and a backflush air tank, wherein the air compressor is connected to the backflush air tank; and the backflush pipeline is connected to the backflush air tank.

[0013] Furthermore, the integrated diaphragm filter press and cleaning equipment also includes a wastewater treatment system; the diaphragm filter press has corner holes for discharging filtrate that are connected to the wastewater treatment system.

[0014] Furthermore, the integrated diaphragm filter press and cleaning equipment also includes a homogenization tank; the sludge pump is connected to the homogenization tank.

[0015] Preferably, the homogenization tank is connected to the wastewater treatment system.

[0016] Furthermore, the pressing and cleaning water tank is connected to the tap water network, and the pressing and cleaning water tank is also connected to the sewage treatment system.

[0017] Preferably, the automatic filter plate cleaning device is located on the upper side of the diaphragm filter press.

[0018] Furthermore, the integrated diaphragm filter press cleaning equipment also includes a PLC control module. The PLC control module enables automated control of the integrated diaphragm filter press cleaning equipment. Furthermore, it can embed a protection program, setting protection conditions during the diaphragm filter plate cleaning process. Specifically, if the pressing pressure exceeds a certain value (e.g., 0.1 MPa) during cleaning, the program automatically stops the cleaning operation and shuts down the pressing and cleaning water pump. This program setting can ensure that the diaphragm filter pressure does not exceed a certain value (e.g., 0.1 MPa) even in the event of a dual failure of the pressing water inlet pneumatic valve and the pressing cleaning exhaust pneumatic valve, thus providing further protection for the diaphragm filter plate.

[0019] This utility model's integrated diaphragm filter press and cleaning equipment allows for the sharing of a pressing and cleaning water pump and a pressing and cleaning water tank between the pressing and cleaning processes. This simplifies pipeline layout, reduces installation workload, and minimizes space occupation. Furthermore, it is equipped with a return backup pipeline and a pressing and cleaning pneumatic valve. This pneumatic valve allows high-pressure cleaning water to flow back to the pressing and cleaning water tank through the return backup pipeline when the pressing inlet pneumatic valve fails. This prevents high-pressure cleaning water from entering the diaphragm chamber and rupturing the membrane, ensuring that the diaphragm filter plate is in a pressure-free state during cleaning and protecting the membrane. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an integrated diaphragm filter press and cleaning device according to an embodiment of the present invention.

[0022] Explanation of the markings in the image: 1- Conditioned sludge pipeline; 2- Equalization tank; 3- Feed pump sludge inlet pneumatic valve; 4- PLC control module; 5- Sludge inlet pump; 6- Filter press sludge inlet pneumatic valve; 7- Sludge inlet pipeline; 8- Backflushing sludge return pneumatic valve; 9- Filtrate pipeline; 10- Diaphragm filter press; 11- Automatic filter plate cleaning device; 12- Backflushing pipeline; 13- Backflushing pneumatic valve; 14- Instrument air tank; 15- Backflushing air tank; 16- Air compressor; 17- Pressing and cleaning exhaust pneumatic valve Valve; 18-Pneumatic valve for pressing water inlet; 19-Backflushing sludge return pipeline; 20-Pneumatic valve for cleaning device inlet; 21-Pneumatic valve for pressing cleaning water return; 22-Pneumatic pump for pressing and cleaning; 23-Pneumatic water return pipeline for pressing and cleaning; 24-Pneumatic water tank for pressing and cleaning; 25-Tap water inlet pipeline; 26-Pneumatic water pipeline for pressing; 27-Cleansing water pipeline; 28-Return backup pipeline; A-First connection point; B-Second connection point; C-Third connection point; D-Fourth connection point. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example Please see Figure 1 The integrated diaphragm filter press cleaning equipment shown includes: 1. Conditioned sludge pipeline; 2. Equalization tank; 3. Feed pump sludge inlet pneumatic valve; 4. PLC control module; 5. Sludge feed pump; 6. Filter press sludge inlet pneumatic valve; 7. Sludge inlet pipeline; 8. Backflushing sludge return pneumatic valve; 9. Filtrate pipeline; 10. Diaphragm filter press; 11. Automatic filter plate cleaning device; 12. Backflushing pipeline; 13. Backflushing pneumatic valve; 14. Instrument air tank; 15. Backflushing air tank. 16. Air compressor, 17. Air exhaust valve for pressing and cleaning, 18. Air inlet valve for pressing and cleaning, 19. Backflushing sludge return pipeline, 20. Air inlet valve for cleaning device, 21. Air return valve for pressing and cleaning water, 22. Pressing and cleaning pump, 23. Air return pipeline for pressing and cleaning water, 24. Pressing and cleaning water tank, 25. Tap water inlet pipeline, 26. Pressing water pipeline, 27. Cleaning water pipeline, 28. Return backup pipeline, and wastewater treatment system.

[0028] Conditioned sludge pipeline 1 connects to homogenization tank 2 for conveying conditioned sludge into homogenization tank 2; preferably, conditioned sludge pipeline 1 connects to the upper end of homogenization tank 2. The bottom of homogenization tank 2 is connected to the wastewater treatment system via a pipeline equipped with a valve, and homogenization tank 2 is also equipped with an overflow outlet and an overflow pipeline. Figure 1 (Not marked in the text); the overflow outlet of the equalization tank is located at the upper end of the equalization tank and is connected to the sewage treatment system through the overflow pipe of the equalization tank.

[0029] The homogenization tank 2 is connected to the sludge feed pump 5 via a pipeline equipped with a feed pump sludge inlet pneumatic valve 3. The sludge feed pump 5 is connected to the filter chamber of the diaphragm filter press 10 via a sludge feed pipeline 7 equipped with a filter press sludge inlet pneumatic valve 6. The sludge feed pump 5 is used to transport the conditioned sludge in the homogenization tank 2 to the filter chamber of the diaphragm filter press 10.

[0030] The instrument air tank 14, the backflush air tank 15, and the air compressor 16 constitute a backflush air device. The backflush air tank 15 is connected to the air compressor 16 and is used to store the high-pressure gas generated by the air compressor 16. The instrument air tank 14 is connected to the backflush air tank 15 and is equipped with a pressure gauge to display the air pressure of the backflush air tank 15. The backflush air tank 15 of the backflush air device is connected to the diaphragm chamber of the diaphragm filter press 10 through the backflush pipeline 12, and the backflush pipeline 12 is equipped with a backflush pneumatic valve 13. In this embodiment, the backflush air device and the sludge pump 5 are located on opposite sides of the diaphragm filter press 10 (e.g., Figure 1 (As shown).

[0031] The backflushing sludge return pipeline 19 connects the sludge inlet pipeline 7 and the wastewater treatment system, and is equipped with a backflushing sludge return pneumatic valve 8. The backflushing sludge return pipeline 19 is used to guide the sludge discharged during backflushing to the wastewater treatment system when the backflushing air device is activated. In this embodiment, the fourth connection point D of the backflushing sludge return pipeline 19 to the sludge inlet pipeline 7 is located between the filter press inlet pneumatic valve 6 and the diaphragm filter press 10. The fourth connection point D is achieved by setting a T-junction pipe to connect the backflushing sludge return pipeline 19 to the sludge inlet pipeline 7. The diaphragm filter press 10 uses a corner hole for discharging filtrate, which is connected to the wastewater treatment system. Specifically, the corner hole is connected to the wastewater treatment system through the filtrate pipeline 9.

[0032] The pressing and cleaning water tank 24 is connected to a tap water network, which supplies pressing and cleaning water (tap water) to the pressing and cleaning water tank 24; preferably, the tap water network is connected to the upper end of the pressing and cleaning water tank 24. The pressing and cleaning water tank 24 is also equipped with an overflow port and an overflow pipe. Figure 1 (Not marked in the text); the overflow port of the water tank is located at the upper end of the pressing and cleaning water tank 24, and is connected to the sewage treatment system through the overflow pipe of the water tank.

[0033] The press cleaning pump 22 is connected to the press cleaning water tank 24 via a pipeline. The press cleaning pump 22 is connected to the diaphragm chamber of the diaphragm filter press 10 via the press water pipeline 26; when the diaphragm filter press 10 has multiple diaphragm chambers, the press water pipeline 26 connects to each diaphragm chamber. The press water pipeline 26 is equipped with a press water inlet pneumatic valve 18.

[0034] The pressing and cleaning water tank 24 is connected to the pressing water pipeline 26 via the pressing and cleaning water return pipeline 23. The first connection point A between the pressing and cleaning water return pipeline 23 and the pressing water pipeline 26 is located between the pressing and cleaning pump 22 and the pressing water inlet pneumatic valve 18; the first connection point A is connected to the pressing and cleaning water return pipeline 23 and the pressing water pipeline 26 by a T-junction. The pressing and cleaning water return pipeline 23 is equipped with a pressing and cleaning water return pneumatic valve 21.

[0035] An automatic filter plate cleaning device 11 is installed on one side of the diaphragm filter press 10. In this embodiment, the automatic filter plate cleaning device 11 is installed on the upper side of the diaphragm filter press 10. The automatic filter plate cleaning device 11 is connected to the pressing water pipe 26 via a cleaning water pipe 27. The second connection point B between the cleaning water pipe 27 and the pressing water pipe 26 is located between the first connection point A and the pressing water inlet pneumatic valve 18. The second connection point B is connected to the cleaning water pipe 27 and the pressing water pipe 26 via a T-junction. The cleaning water pipe 27 is equipped with a cleaning device inlet pneumatic valve 20.

[0036] The pressing and cleaning water tank 24 is also connected to the pressing water pipeline 26 via a return spare pipeline 28. The third connection point C between the return spare pipeline 28 and the pressing water pipeline 26 is located between the pressing water inlet pneumatic valve 18 and the diaphragm filter press 10. The third connection point C is achieved by setting a T-junction pipe to connect the return spare pipeline 28 and the pressing water pipeline 26. The return spare pipeline 28 is equipped with a pressing and cleaning exhaust pneumatic valve 17.

[0037] PLC control module 4 is used to realize the automated control of this integrated diaphragm filter press and cleaning equipment.

[0038] The working method and process of this integrated diaphragm filter press and cleaning equipment are as follows: The conditioned sludge is transported into the homogenization tank 2 for temporary storage via the conditioned sludge pipeline 1. Sludge feeding stage: Open the sludge feeding pneumatic valve 3 of the sludge feeding pump and the sludge feeding pneumatic valve 6 of the filter press (the backflushing pneumatic valve 13 and the backflushing sludge return pneumatic valve 8 are closed). The sludge after conditioning in the equalization tank 2 is transported into the filter chamber of the diaphragm filter press 10 by the sludge feeding pump 5. After the sludge feeding is completed, close the sludge feeding pneumatic valve 3 of the sludge feeding pump and the sludge feeding pneumatic valve 6 of the filter press. Pressing stage: Open the press water inlet pneumatic valve 18 (press cleaning exhaust pneumatic valve 17, cleaning device water inlet pneumatic valve 20, and press cleaning water return pneumatic valve 21 are closed), and press water is input into the diaphragm chamber of the diaphragm filter press 10 through the press cleaning water pump 22 to squeeze the sludge in the filter chamber. After the squeezing is completed, open the press cleaning water return pneumatic valve 21, and the press water in the filter chamber is returned to the press cleaning water tank 24 for recycling through the press cleaning water return pipeline 23. Backflushing stage: Open the backflushing sludge return pneumatic valve 8 and backflushing pneumatic valve 13 (close the sludge inlet pump pneumatic valve 3 and filter press sludge inlet pneumatic valve 6), and the compressed air stored in the backflushing air tank 15 enters the filter chamber of the diaphragm filter press 10 through the backflushing pipeline 12, and backflushes the sludge-water mixture in the middle of the feed hole into the sewage treatment system through the backflushing sludge return pipeline 19; Cleaning Stage: After the sludge cake is unloaded, the filter cloth and filter plates can enter the cleaning state. Open the inlet pneumatic valve 20 and the press cleaning water exhaust pneumatic valve 17 of the cleaning device, and close the press water inlet pneumatic valve 18 and the press cleaning water return pneumatic valve 21. The press cleaning water is pumped into the automatic filter plate cleaning device 11 through the press cleaning water pump 22 to clean the filter cloth installed on the filter plate of the diaphragm filter press 10. The sludge water generated during cleaning is collected and discharged into the sewage treatment system. Figure 1 (The collection device and drainage pipeline are not shown in the image). Because the diaphragm filter press consists of multiple filter plates, it is a batch cleaning process. During the process of switching from one filter plate to another, there is a filter plate pulling operation. Therefore, the automatic cleaning device needs to stop supplying water during the switching process. At this time, the pneumatic valve 20 for the inlet of the cleaning device is closed and the pneumatic valve 21 for the press cleaning water return is opened. The press cleaning water pump 22 delivers the press cleaning water back to the press cleaning water tank 24 through the press cleaning water return pipeline 23. After the switching is completed, the next filter plate and filter cloth cleaning step is repeated. This cycle is repeated until all filter cloths are cleaned. Then, all valves are reset, that is, the pneumatic valve 20 for the inlet of the cleaning device and the pneumatic valve 17 for the press cleaning water exhaust are closed, and the pneumatic valve 21 for the press cleaning water return and the pneumatic valve 18 for the press cleaning water inlet are opened. Each of the above stages is controlled by PLC control module 4 according to the process flow and relevant process parameters.

[0039] In this process, during the automatic cleaning process, strict settings must be configured in the PLC program. These settings primarily prevent damage to the diaphragm filter plates caused by the failure of the pneumatic valve 18 for the pressing water inlet during cleaning. This damage could occur because the pressure of the pressing water entering the diaphragm filter plates is far higher than the pressing pressure the diaphragm filter plates can withstand. Therefore, the program is configured with pressure protection, and simultaneously, a separate pneumatic valve 17 for the pressing and cleaning exhaust is kept open during the cleaning process to avoid the risk of damage to the diaphragm filter plates due to overpressure, providing dual protection. Specifically, a protection program can be embedded in the PLC control module 4. This program sets protection conditions during the diaphragm filter plate cleaning process. Specifically, if the pressing pressure exceeds a certain value (e.g., 0.1 MPa) during cleaning, the program automatically stops the cleaning operation and automatically shuts off the pressing and cleaning water pump. This program setting ensures that the pressure of the diaphragm filter does not exceed a certain value (e.g., 0.1 MPa) even in the event of failure of both the pneumatic valve for the pressing water inlet and the pneumatic valve for the pressing and cleaning exhaust, further protecting the diaphragm filter plates.

[0040] This utility model's integrated diaphragm filter press and cleaning equipment allows for the sharing of a pressing and cleaning water pump and a pressing and cleaning water tank between the pressing and cleaning processes. This simplifies pipeline layout, reduces installation workload, and minimizes space occupation. Furthermore, it is equipped with a return backup pipeline and a pressing and cleaning pneumatic valve. This pneumatic valve allows high-pressure cleaning water to flow back to the pressing and cleaning water tank through the return backup pipeline when the pressing inlet pneumatic valve fails. This prevents high-pressure cleaning water from entering the diaphragm chamber and rupturing the membrane, ensuring that the diaphragm filter plate is in a pressure-free state during cleaning and protecting the membrane.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A diaphragm filter press cleaning integrated device, characterized in that, It includes a diaphragm filter press, a mud pump, a press cleaning pump, an automatic filter plate cleaning device, a press cleaning water tank, a press water pipeline, a cleaning water pipeline, a press cleaning water return pipeline, and a return backup pipeline. The mud inlet pump is connected to the filter chamber of the diaphragm filter press; the press cleaning pump is connected to the press cleaning water tank; The pressing and cleaning pump is connected to the diaphragm chamber of the diaphragm filter press through the pressing water pipeline; the pressing water pipeline is equipped with a pressing water inlet pneumatic valve; The pressing and cleaning water tank is connected to the pressing water pipeline through the pressing and cleaning water return pipeline. The first connection point between the pressing and cleaning water return pipeline and the pressing water pipeline is located between the pressing and cleaning pump and the pressing water inlet pneumatic valve. The pressing and cleaning water return pipeline is equipped with a pressing and cleaning water return pneumatic valve. The automatic filter plate cleaning device is located on one side of the diaphragm filter press and is connected to the pressing water pipeline through the cleaning water pipeline. The second connection point between the cleaning water pipeline and the pressing water pipeline is located between the first connection point and the pressing water inlet pneumatic valve. The cleaning water pipeline is equipped with a cleaning device inlet pneumatic valve. The pressing and cleaning water tank is also connected to the pressing water pipeline through the return spare pipeline. The third connection point between the return spare pipeline and the pressing water pipeline is located between the pressing water inlet pneumatic valve and the diaphragm filter press. The return spare pipeline is equipped with a pressing and cleaning exhaust pneumatic valve.

2. The integrated diaphragm filter press and cleaning equipment according to claim 1, characterized in that, It also includes a mud inlet pipeline, through which the mud inlet pump is connected to the filter chamber of the diaphragm filter press; the mud inlet pipeline is equipped with a filter press mud inlet pneumatic valve.

3. The integrated diaphragm filter press and cleaning equipment according to claim 2, characterized in that, It also includes a backflush air device, a backflush pipeline, and a backflush sludge return pipeline; the backflush air device is connected to the diaphragm chamber of the diaphragm filter press through the backflush pipeline, and the backflush pipeline is equipped with a backflush pneumatic valve; the backflush sludge return pipeline is connected to the sludge inlet pipeline, and the backflush sludge return pipeline is equipped with a backflush sludge return pneumatic valve.

4. The integrated diaphragm filter press and cleaning equipment according to claim 3, characterized in that, The backflush device includes an air compressor and a backflush air tank, wherein the air compressor is connected to the backflush air tank; and the backflush pipeline is connected to the backflush air tank.

5. The integrated diaphragm filter press and cleaning equipment according to claim 1, characterized in that, It also includes a wastewater treatment system; the diaphragm filter press is used to discharge the filtrate through a corner hole connected to the wastewater treatment system.

6. The integrated diaphragm filter press and cleaning equipment according to claim 5, characterized in that, It also includes a homogenization tank; the sludge pump is connected to the homogenization tank.

7. The integrated diaphragm filter press and cleaning device according to claim 6, characterized in that, The homogenization tank is connected to the wastewater treatment system.

8. The integrated diaphragm filter press and cleaning device according to claim 7, characterized in that, The pressing and cleaning water tank is connected to the tap water network, and the pressing and cleaning water tank is also connected to the sewage treatment system.

9. The integrated diaphragm filter press and cleaning equipment according to claim 1, characterized in that, The automatic filter plate cleaning device is located on the upper side of the diaphragm filter press.

10. The integrated diaphragm filter press and cleaning device according to any one of claims 1-9, characterized in that, It also includes a PLC control module.

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