Sludge filtering device

Abstract

The utility model discloses a sludge filtering device, which belongs to the technical field of sludge treatment and comprises a water storage tank for storing filtered water, a filtering bin arranged on the water storage tank and communicated with the water storage tank, and a sludge pipe arranged on the filtering bin, communicated with the filtering bin and used for inputting sludge into the filtering bin, the drain pipe is arranged on the water storage tank and used for draining water in the water storage tank, and a filter structure used for filtering stone impurities in sludge is arranged in the filter bin. According to the sludge filtering device, sludge can be conveyed to the sludge filtering plate in the filtering bin through the sludge pipe, and the driving lever can be driven to repeatedly stir the sludge on the sludge filtering plate under the action of the motor, so that the flowing of the sludge is promoted, the sludge is filtered, and stone impurities in the sludge are prevented from abrading the linkage shaft and the conical spiral extrusion sheet part; the stability of the structure is improved, the service life of the structure is prolonged, and water is sprayed onto the sludge in the filter bin, so that the water can pass through the sludge filter plate more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, and particularly relates to a sludge filtering device. Background Art

[0002] Sludge treatment refers to the process of reducing, stabilizing, and rendering harmless the sludge. This process generally includes steps such as sludge thickening, conditioning, dewatering, stabilization, drying, or incineration, aiming to reduce the volume of sludge, improve its stability, and eliminate its potential harm to the environment.

[0003] Sludge dewatering equipment is an important device for removing water from sludge, reducing the volume of sludge, and facilitating subsequent treatment and disposal. It uses the filter cavity formed between the spiral shaft and the laminated plates to squeeze and shear the sludge, enabling the water in the sludge to be discharged through the filter screen under pressure, thereby achieving sludge dewatering.

[0004] In the prior art, in addition to containing a large amount of organic matter, sludge may also contain a certain amount of impurities such as stones and fine sand. When using sludge dewatering equipment to dewater sludge, the stone impurities in the sludge will cause wear to components such as the filter screen and spiral shaft of the dewatering machine, thereby reducing the service life of the equipment. Moreover, the stones may get stuck in the filter screen or spiral shaft, resulting in equipment blockage and affecting the dewatering efficiency. Summary of the Utility Model

[0005] Aiming at the above-mentioned technical deficiencies, the purpose of the present utility model is to provide a sludge filtering device to solve some or all of the problems in the above background art.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] A sludge filtering device, comprising:

[0008] A water storage tank for storing filtered water;

[0009] A filtering chamber arranged on the water storage tank and communicating with the water storage tank;

[0010] A sludge pipe arranged on the filtering chamber and communicating with the filtering chamber, for inputting sludge into the filtering chamber;

[0011] A drain pipe arranged on the water storage tank, for discharging the water in the water storage tank;

[0012] A filtering structure arranged in the filtering chamber, for filtering stone impurities in the sludge;

[0013] An extrusion structure arranged on the inner wall of the water storage tank, the extrusion structure cooperating with the filtering structure to squeeze out the water in the sludge;

[0014] Dilution structure, arranged on the inner wall of the water storage tank, for reducing the sludge concentration;

[0015] Wherein, the dilution structure includes a water filtering component for filtering the extruded water, a spraying component for pumping water and spraying it onto the sludge, and a scraping component for removing the residual impurities on the water filtering component.

[0016] Preferably, the filtering structure includes:

[0017] Sludge filter plate, arranged on the inner wall of the filtering bin, for filtering sludge;

[0018] Rotating shaft, rotatably installed on the filtering bin and the sludge filter plate;

[0019] Motor, arranged above the filtering bin, and the output end of the motor is arranged at one end of the rotating shaft, for driving the rotating shaft to rotate;

[0020] Poking rod, arranged on the rotating shaft and in contact with the sludge filter plate, for spreading the sludge on the sludge filter plate;

[0021] Observation component, arranged on the filtering bin, for observing the filtering condition of the sludge in the filtering bin.

[0022] Preferably, the observation component includes a transparent observation window arranged on the water storage tank, and a plurality of mounting bolts are movably installed on the transparent observation window, and the mounting bolts are threadedly installed on the water storage tank for fixing the position of the transparent observation window.

[0023] Preferably, the extrusion structure includes:

[0024] Feeding hopper, arranged on the inner wall of the filtering bin and below the sludge filter plate;

[0025] Conical filter cylinder, arranged on the inner wall of the water storage tank, and the conical filter cylinder is arranged on the feeding hopper and communicated with the feeding hopper;

[0026] Linkage shaft, rotatably installed on the water storage tank and the conical filter cylinder;

[0027] Shaft bracket, arranged on one side of the water storage tank, and the shaft bracket is rotatably installed on the linkage shaft for supporting the linkage shaft;

[0028] Conical spiral extrusion sheet, arranged on the linkage shaft, and the conical spiral extrusion sheet is in contact with the inner wall of the conical filter cylinder;

[0029] Transmission component, arranged on the linkage shaft, for driving the linkage shaft to rotate;

[0030] Wherein, a plurality of filter holes for allowing water to pass through are formed on the conical filter cylinder.

[0031] Preferably, the transmission component includes:

[0032] The driven bevel gear is arranged on the linkage shaft;

[0033] The linkage bevel gear is arranged at one end of the rotating shaft, and the linkage bevel gear meshes with the driven bevel gear.

[0034] Preferably, the water filtering assembly includes a water filtering plate arranged in the water storage tank. The water filtering plate is located below the conical filtering cylinder and is used for filtering the water extruded from the conical filtering cylinder.

[0035] Preferably, the spraying assembly includes:

[0036] The water pumping electric pump is arranged on one side of the water storage tank, and the water pumping end of the water pumping electric pump penetrates and extends into the water storage tank;

[0037] The conveying pipe is arranged on the water delivery end of the water pumping electric pump and is used for conveying the water pumped by the water pumping electric pump;

[0038] The nozzle is arranged at one end of the conveying pipe and is communicated with the conveying pipe;

[0039] Wherein, one end of the conveying pipe penetrates and extends into the water storage tank, and the nozzle is located above the sludge filtering plate and is used for spraying water onto the sludge on the sludge filtering plate.

[0040] Preferably, the scraping assembly includes:

[0041] The scraping plate is in contact with the water filtering plate and is used for scraping impurities on the water filtering plate;

[0042] The reciprocating lead screw is rotatably installed on the water storage tank, and the reciprocating lead screw is threadedly installed on the scraping plate;

[0043] The first transmission wheel is arranged at one end of the reciprocating lead screw;

[0044] The second transmission wheel is arranged at one end of the linkage shaft;

[0045] The transmission belt is installed on the first transmission wheel and the second transmission wheel in a transmission manner;

[0046] The impurity discharge port is opened on the water storage tank, and the impurity discharge port corresponds to the scraping plate.

[0047] The beneficial effects of the utility model are as follows:

[0048] In this utility model, sludge can be transported to the sludge filter plate in the filtration bin through a sludge pipe. Meanwhile, the motor can be started. Under the action of the motor, the lever can drive the sludge on the sludge filter plate to be repeatedly stirred, so that the sludge is evenly distributed on the filter plate, promoting the flow of the sludge and preventing the sludge filter plate from being blocked. As a result, the sludge can flow through the sludge filter plate to the material guiding hopper, while the stone impurities in the sludge will remain on the sludge filter plate, realizing the filtration of the sludge. The filtered sludge will enter the conical filter cylinder under the guidance of the material guiding hopper, and under the action of the motor, the conical spiral extrusion sheet can rotate and extrude the sludge, squeezing out the water in the sludge and dehydrating the sludge. By filtering the sludge before dehydration, it can prevent the stone impurities in the sludge from wearing the linkage shaft and the conical spiral extrusion sheet components, improving the structural stability and service life.

[0049] In this utility model, the water extruded from the conical filter cylinder can fall to the bottom of the water storage tank after being filtered by the water filter plate. The drain pipe can be connected to a water pump to transport the water to subsequent treatment equipment, or the water pump can be started to pump the water into the conveying pipe and spray it onto the sludge in the filtration bin through a nozzle to dilute the sludge, further enhancing the sludge fluidity, reducing the sludge concentration, making it easier to pass through the sludge filter plate, and thus improving the filtration efficiency.

[0050] In this utility model, under the continuous operation of the motor, the scraper can reciprocally scrape on the surface of the water filter plate. During this process, the scraper can push the impurities on the water filter plate out from the impurity discharge ports on both sides, thereby cleaning the impurities on the water filter plate and preventing the water filter plate from being blocked. Description of the Drawings

[0051] In order to more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of this utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0052] Figure 1 It is a schematic structural diagram of a sludge filtration device provided by an embodiment of this utility model;

[0053] Figure 2 It is a schematic side view structural diagram of a sludge filtration device provided by an embodiment of this utility model;

[0054] Figure 3 It is a schematic cross-sectional structural diagram of a sludge filtration device provided by an embodiment of this utility model;

[0055] Figure 4Schematic diagram of the water extraction pump structure of a sludge filtration device provided by an embodiment of the present utility model.

[0056] Explanation of reference numerals:

[0057] 1. Water storage tank; 2. Filtration chamber; 3. Sludge pipe; 4. Drain pipe; 5. Sludge filter plate; 501. Rotating shaft; 502. Motor; 503. Poking rod; 504. Transparent observation window; 505. Installation bolt; 6. Feeding hopper; 601. Conical filter cylinder; 602. Linkage shaft; 603. Shaft bracket; 604. Conical spiral extrusion sheet; 605. Driven conical gear; 606. Linkage conical gear; 7. Water filter plate; 701. Water extraction pump; 702. Delivery pipe; 703. Sprinkler head; 8. Scraper; 801. Reciprocating lead screw; 802. Driving wheel I; 803. Driving wheel II; 804. Transmission belt; 805. Impurity discharge port. Specific implementation manners

[0058] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0059] Embodiment 1:

[0060] As Figures 1 to 4 shown, the present utility model provides a sludge filtration device, including: a water storage tank 1 for storing filtered water, a filtration chamber 2 arranged on the water storage tank 1 and communicating with the water storage tank 1, a sludge pipe 3 arranged on the filtration chamber 2 and communicating with the filtration chamber 2 for inputting sludge into the filtration chamber 2, and a drain pipe 4 arranged on the water storage tank 1 for discharging the water in the water storage tank 1.

[0061] In order to filter the stone impurities in the sludge and prevent the subsequent wear of components such as the linkage shaft and the conical spiral extrusion sheet during the sludge dewatering operation, a filtration structure for filtering the stone impurities in the sludge is arranged in the filtration chamber 2, and an extrusion structure for extruding the water in the sludge is arranged on the inner wall of the water storage tank 1. The extrusion structure is used in cooperation with the filtration structure.

[0062] Among them, the filtering structure includes a sludge filtering plate 5 arranged on the inner wall of the filtering bin 2 for filtering sludge, a rotating shaft 501 rotatably installed on the filtering bin 2 and the sludge filtering plate 5, a motor 502 arranged above the filtering bin 2 for driving the rotation of the rotating shaft 501, the output end of the motor 502 is arranged at one end of the rotating shaft 501, a dial rod 503 arranged on the rotating shaft 501 and in contact with the sludge filtering plate 5 for spreading the sludge on the sludge filtering plate 5, an observation assembly arranged on the filtering bin 2 for observing the sludge filtering situation in the filtering bin 2. The sludge is conveyed into the filtering bin 2 through the sludge pipe 3, so that the sludge falls onto the sludge filtering plate 5. Since the sludge contains more water and is in a flowing state, the sludge can pass through the sludge filtering plate 5 and fall into the material guiding hopper 6. By starting the motor 502, the rotating shaft 501 can be driven to rotate. When the rotating shaft 501 rotates, the dial rod 503 can stir the sludge on the sludge filtering plate 5, promoting the movement of the sludge and improving the filtering effect.

[0063] Specifically, the observation assembly includes a transparent observation window 504 arranged on the water storage tank 1. A plurality of mounting bolts 505 for fixing the position of the transparent observation window 504 are movably installed on the transparent observation window 504. The mounting bolts 505 are threadedly installed on the water storage tank 1. The staff can observe the filtering situation on the sludge filtering plate 5 through the transparent observation window 504. By unscrewing the mounting bolts 505, the transparent observation window 504 can be removed to facilitate the cleaning of the impurities on the sludge filtering plate 5.

[0064] Among them, the extrusion structure includes a material guiding hopper 6 arranged on the inner wall of the filtering bin 2 and located below the sludge filtering plate 5, a conical filtering cylinder 601 arranged on the inner wall of the water storage tank 1. The conical filtering cylinder 601 is arranged on the material guiding hopper 6 and is communicated with the material guiding hopper 6, a linkage shaft 602 rotatably installed on the water storage tank 1 and the conical filtering cylinder 601, a shaft bracket 603 arranged on one side of the water storage tank 1 for supporting the linkage shaft 602. The shaft bracket 603 is rotatably installed on the linkage shaft 602, a conical spiral extrusion piece 604 arranged on the linkage shaft 602. The conical spiral extrusion piece 604 is in contact with the inner wall of the conical filtering cylinder 601, a transmission assembly arranged on the linkage shaft 602 for driving the rotation of the linkage shaft 602. A plurality of filter holes for water to pass through are opened on the conical filtering cylinder 601. The filtered sludge will enter the conical filtering cylinder 601 under the guidance of the material guiding hopper 6. And under the rotation of the rotating shaft 501, the conical spiral extrusion piece 604 can be driven to push the sludge in the conical filtering cylinder 601 to move, so that the space of the sludge becomes smaller and smaller during the movement process, squeezing out the water in the sludge, and enabling the water to flow through the filter holes on the conical filtering cylinder 601 to the bottom of the water storage tank 1.

[0065] Specifically, the transmission assembly includes a driven bevel gear 605 arranged on the linkage shaft 602, and a linkage bevel gear 606 arranged at one end of the rotating shaft 501. The linkage bevel gear 606 meshes with the driven bevel gear 605. During the rotation of the rotating shaft 501, the linkage bevel gear 606 can be driven to rotate, and when the linkage bevel gear 606 rotates, it can drive the linkage shaft 602 to rotate through meshing with the driven bevel gear 605.

[0066] Embodiment 2:

[0067] On the basis of Embodiment 1, in order to promote the movement of the sludge on the sludge filter plate 5 and make it easier to pass through the sludge filter plate 5, a dilution structure for reducing the sludge concentration is arranged on the inner wall of the water storage tank 1. The dilution structure includes a water filtering component for filtering the extruded water and a spraying component for pumping water and spraying it onto the sludge.

[0068] Among them, the water filtering component includes a water filtering plate 7 arranged in the water storage tank 1 for filtering the water extruded from the conical filter cylinder 601. The water filtering plate 7 is located below the conical filter cylinder 601. The water extruded from the conical filter cylinder 601 will fall onto the water filtering plate 7 and is filtered by the water filtering plate 7 and then stored at the bottom of the water storage tank 1.

[0069] Among them, the spraying component includes a water pumping electric pump 701 arranged on one side of the water storage tank 1. The water pumping end of the water pumping electric pump 701 penetrates and extends into the water storage tank 1. A conveying pipe 702 arranged on the water conveying end of the water pumping electric pump 701 for conveying the water pumped by the water pumping electric pump 701. A spray head 703 arranged at one end of the conveying pipe 702 and communicating with the conveying pipe 702 for spraying water onto the sludge on the sludge filter plate 5. One end of the conveying pipe 702 penetrates and extends into the water storage tank 1. The spray head 703 is located above the sludge filter plate 5. When the water pumping electric pump 701 is turned on, the filtered water can be pumped out and conveyed through the conveying pipe 702, and finally sprayed onto the sludge in the filtering chamber 2 through the spray head 703 to reduce the concentration of the sludge.

[0070] Embodiment 3:

[0071] On the basis of Embodiment 2, in order to prevent the water filtering component from being blocked and clean the residual impurities on the water filtering component, a scraping component for removing the residual impurities on the water filtering component is arranged on the water storage tank 1.

[0072] Among them, the scraping component includes a scraper 8 for scraping impurities on the water filtering plate 7. The scraper 8 is in contact with the water filtering plate 7, and a reciprocating lead screw 801 rotatably installed on the water storage tank 1. The reciprocating lead screw 801 is threadedly installed on the scraper 8. A first driving wheel 802 is arranged at one end of the reciprocating lead screw 801, and a second driving wheel 803 is arranged at one end of the linkage shaft 602. A transmission belt 804 is drivingly installed on the first driving wheel 802 and the second driving wheel 803. A waste discharging port 805 is opened on the water storage tank 1, and the waste discharging port 805 corresponds to the scraper 8. During the continuous rotation of the linkage shaft 602, the second driving wheel 803 can be driven to rotate. The second driving wheel 803 can drive the first driving wheel 802 to rotate. When the first driving wheel 802 rotates, the reciprocating lead screw 801 can be driven to rotate, so that the rotating reciprocating lead screw 801 drives the scraper 8 to reciprocate and slide, and scrapes the impurities on the water filtering plate 7 out from the two waste discharging ports 805.

[0073] Working principle:

[0074] The sludge is conveyed to the filtering bin 2 through the sludge pipe 3, so that the sludge falls onto the sludge filtering plate 5 in the filtering bin 2. Since the sludge contains more water and is in a flowing state, the sludge can fall through the sludge filtering plate 5 into the material guiding hopper 6, while the larger stone impurities will remain on the sludge filtering plate 5. At the same time, the motor 502 can be started. The output end of the motor 502 can drive the rotating shaft 501 to rotate. When the rotating shaft 501 rotates, the dial rod 503 can stir the sludge on the sludge filtering plate 5, promote the activity of the sludge, improve the filtering effect, and prevent the sludge filtering plate 5 from being blocked. The staff can observe the filtering situation on the sludge filtering plate 5 through the transparent observation window 504. And by unscrewing the mounting bolt 505 from the transparent observation window 504, the transparent observation window 504 can be removed from the filtering bin 2, and the filtering bin 2 can be opened to clean the impurities on the sludge filtering plate 5. The filtered sludge will enter the conical filtering cylinder 601 under the guidance of the material guiding hopper 6. And under the rotation of the rotating shaft 501, the linkage bevel gear 606 can be driven to rotate. When the linkage bevel gear 606 rotates, it can drive the linkage shaft 602 to rotate through the meshing with the driven bevel gear 605. When the linkage shaft 602 rotates, it will drive the conical spiral squeezing piece 604 to rotate in the conical filtering cylinder 601. During the rotation of the conical spiral squeezing piece 604, the sludge in the conical filtering cylinder 601 will be pushed to move. Since the conical filtering cylinder 601 and the conical spiral squeezing piece 604 adopt a conical design, the space of the sludge becomes smaller and smaller during the movement process. Therefore, under the continuous rotation of the conical spiral squeezing piece 604, the water in the sludge can be squeezed out, and the water can flow through the filter holes on the conical filtering cylinder 601 to the bottom of the water storage tank 1. The squeezed sludge will be discharged through the conical filtering cylinder 601.

[0075] The squeezed water will fall onto the water filter plate 7. After being filtered by the water filter plate 7, it will be stored at the bottom of the water storage tank 1. The drain pipe 4 can be connected to a water pump to pump out the water in the water storage tank 1, while the sludge impurities in the water will remain on the water filter plate 7. During the continuous rotation of the linkage shaft 602, it can drive the second transmission wheel 803 to rotate. The rotating second transmission wheel 803 can drive the first transmission wheel 802 to rotate through the transmission cooperation with the transmission belt 804. When the first transmission wheel 802 rotates, it can drive the reciprocating lead screw 801 to rotate, so that the rotating reciprocating lead screw 801 drives the scraper 8 to reciprocate through the thread cooperation with the scraper 8. The reciprocating scraper 8 can scrape the impurities on the water filter plate 7 out from the two impurity discharge ports 805, clean the impurities on the water filter plate 7, prevent the water filter plate 7 from being blocked. At the same time, the water pump 701 can also be turned on. The water pump 701 can pump out the filtered water and transport it through the delivery pipe 702, and finally spray it onto the sludge in the filtration chamber 2 through the nozzle 703, reducing the concentration of the sludge and making it easier to pass through the sludge filter plate 5.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A sludge filtering device, characterized in that: include: A water storage tank (1) for storing filtered water; A filter chamber (2) is arranged on the water storage tank (1) and is connected to the water storage tank (1); A sludge pipe (3) is arranged on the filter chamber (2) and is connected to the filter chamber (2) and is used to input sludge into the filter chamber (2); A drainage pipe (4) is arranged on the water storage tank (1) and is used to discharge water in the water storage tank (1); A filtering structure is arranged in the filtering chamber (2) and is used to filter stone impurities in the sludge; An extrusion structure is arranged on the inner wall of the water storage tank (1), and the extrusion structure is used in conjunction with the filtering structure to squeeze out water from the sludge; A dilution structure, arranged on the inner wall of the water storage tank (1) and used to reduce the sludge concentration; The dilution structure includes a water filter assembly for filtering squeezed water, a spray assembly for extracting water and spraying it onto the sludge, and a scraper assembly for removing residual impurities on the water filter assembly.

2. A sludge filtering device as claimed in claim 1, characterized in that: The filtering structure comprises: A sludge filter plate (5) is arranged on the inner wall of the filter bin (2) and is used to filter the sludge; A rotating shaft (501) is rotatably mounted on the filter bin (2) and the sludge filter plate (5); A motor (502) is arranged above the filter chamber (2), and an output end of the motor (502) is arranged at one end of the rotating shaft (501) for driving the rotating shaft (501) to rotate; A lever (503) is arranged on the rotating shaft (501) and in contact with the sludge filter plate (5), and is used to spread the sludge on the sludge filter plate (5); The observation component is arranged on the filter bin (2) and is used to observe the filtering condition of the sludge in the filter bin (2).

3. A sludge filtering device as claimed in claim 2, characterized in that: The observation assembly comprises a transparent observation window (504) arranged on the water storage tank (1), a plurality of mounting bolts (505) being movably mounted on the transparent observation window (504), and the mounting bolts (505) being threadedly mounted on the water storage tank (1) and used to fix the position of the transparent observation window (504).

4. A sludge filtering device as claimed in claim 1, characterized in that: The extrusion structure comprises: A guide hopper (6) is arranged on the inner wall of the filter bin (2) and is located below the sludge filter plate (5); A conical filter cartridge (601) is arranged on the inner wall of the water storage tank (1); the conical filter cartridge (601) is arranged on the guide hopper (6) and is connected to the guide hopper (6); A linkage shaft (602) is rotatably mounted on the water storage tank (1) and the conical filter cartridge (601); A shaft frame (603) is arranged on one side of the water storage tank (1), and the shaft frame (603) is rotatably mounted on the linkage shaft (602) to support the linkage shaft (602); A conical spiral extruded sheet (604) is arranged on the linkage shaft (602), and the conical spiral extruded sheet (604) is in contact with the inner wall of the conical filter cartridge (601); A transmission assembly is arranged on the linkage shaft (602) and is used to drive the linkage shaft (602) to rotate; The conical filter cartridge (601) is provided with a plurality of filter holes for allowing water to pass through.

5. A sludge filtering device as claimed in claim 4, characterized in that: The transmission assembly comprises: A driven bevel gear (605) is arranged on the linkage shaft (602); The linkage bevel gear (606) is arranged at one end of the rotating shaft (501), and the linkage bevel gear (606) is meshed with the driven bevel gear (605).

6. A sludge filtering device as claimed in claim 1, characterized in that: The water filter assembly comprises a water filter plate (7) arranged in the water storage tank (1); the water filter plate (7) is located below the conical filter cartridge (601) and is used to filter water squeezed out of the conical filter cartridge (601).

7. A sludge filtering device as claimed in claim 1, characterized in that: The spray assembly comprises: A water pump (701) is arranged on one side of the water storage tank (1), and a water pumping end of the water pump (701) penetrates and extends into the water storage tank (1); A delivery pipe (702) is arranged on the water delivery end of the water pumping electric pump (701) and is used to deliver water pumped by the water pumping electric pump (701); A nozzle (703) is arranged at one end of the delivery pipe (702) and is connected to the delivery pipe (702); One end of the delivery pipe (702) penetrates and extends into the water storage tank (1), and the nozzle (703) is located above the sludge filter plate (5) and is used to spray water toward the sludge on the sludge filter plate (5).

8. A sludge filtering device as claimed in claim 1, characterized in that: The scraper assembly comprises: A scraper (8) is in contact with the water filter plate (7) and is used to scrape away impurities on the water filter plate (7); A reciprocating screw rod (801) is rotatably mounted on the water storage tank (1), and the reciprocating screw rod (801) is threadably mounted on the scraper (8); A transmission wheel 1 (802) is arranged at one end of the reciprocating screw rod (801); A second transmission wheel (803) is arranged at one end of the linkage shaft (602); A transmission belt (804) is installed on the transmission wheel 1 (802) and the transmission wheel 2 (803); The impurity discharge port (805) is provided on the water storage tank (1), and the impurity discharge port (805) corresponds to the scraper (8).

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