A sludge filter press filter cloth backwashing system

Abstract

The application belongs to the technical field of filter cloth cleaning of filter press, and particularly relates to a sludge filter press filter cloth backwashing system. The existing sludge filter press filter cloth backwashing system is poor in working efficiency because small sludge particles block the gaps on the filter cloth after long-time use of the filter cloth, so that the filter cloth backwashing system cannot effectively remove the sludge in the gaps. The following scheme is proposed, which comprises a mounting frame, two symmetrical support frames are fixedly connected to the bottom of the mounting frame, a filter cloth is arranged on the mounting frame, an inlet is fixedly connected to the upper side of the mounting frame, and the inlet is located above the filter cloth. The sludge filter press filter cloth backwashing system disclosed in the application can stretch and tighten the filter cloth by using the inclined surface washing module, expand the filter holes on the filter cloth, and effectively clean the blocked sludge in the filter holes, thereby greatly improving the washing and cleaning efficiency.

Description

Technical Field

[0001] This invention relates to the field of filter cloth cleaning technology for filter presses, and more particularly to a backwashing system for filter cloths in sludge filter presses. Background Technology

[0002] A filter press is a mechanical device that uses a special filter medium to apply pressure to a material, causing the liquid to seep out. It is a commonly used solid-liquid separation device. It was first applied to chemical production in the early 18th century and is still widely used in industries such as chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramics, and environmental protection. The filter plates are characterized by stable performance, convenient operation, safety, and labor-saving features; the metal press cylinder is made of seamless steel pipe and precision-cast plastic steel filter plates, making it resistant to high temperatures and pressures, and durable.

[0003] In existing sludge filter press filter cloth backwashing systems, the fine sludge particles from prolonged use can clog the gaps in the filter cloth, making it difficult for the system to effectively remove the sludge. This results in poor operating efficiency of the sludge filter press filter cloth backwashing system. Summary of the Invention

[0004] This invention discloses a sludge filter press filter cloth backwashing system, which aims to solve the technical problem of poor washing efficiency in existing sludge filter press filter cloth backwashing systems in the background art.

[0005] This invention proposes a sludge filter press filter cloth backwashing system, including a mounting frame. Two symmetrical support frames are fixedly connected to the bottom of the mounting frame, and a filter cloth is mounted on the mounting frame. A sludge inlet is fixedly connected to the upper side of the mounting frame, located above the filter cloth. A sludge discharge port is provided on one of the support frames, located outside the filter cloth. Two symmetrical fixing modules are provided below the mounting frame, along with an angle adjustment module. A sloped flushing module is located between the two fixing modules.

[0006] Equipped with a support frame, filter cloth, sludge inlet, sludge outlet, inclined flushing module, angle adjustment module, and fixing module, the device uses the inclined flushing module to stretch and tighten the filter cloth, expanding the filter pores on the filter cloth, so that the sludge clogging the filter pores can be effectively cleaned, greatly improving the efficiency of flushing and cleaning.

[0007] In a preferred embodiment, the inclined flushing module includes two symmetrical short rods. Two symmetrical long rods are fixedly connected to opposite sides of the two short rods. Each of the two long rods has two symmetrical strip grooves on its upper side. A support (first type) is slidably connected within each strip groove, and a lever arm is movably connected to one side of each support (first type). The end of the lever arm away from support (first type) is movably connected to the same rectangular frame. Two symmetrical notches are formed on the upper side of the rectangular frame, and rotating rollers are movably connected within each notch. Two symmetrical second supports (second type) are fixedly connected to the upper side of each of the two long rods. A bidirectional lead screw is movably connected to the two second supports on the same long rod. Two symmetrical movable seats are provided on the outside of the bidirectional lead screw, and the two movable seats on the same long rod are respectively fixedly connected to the outside of the two first supports. A gear (first type) is fixedly connected to the outside of the bidirectional lead screw, located between the two second supports. A motor (first type) is bolted to the upper side of the long rod. The output ends are all connected to gear two via couplings, and gear two meshes with gear one. Two symmetrical vertical plates are fixedly connected to the bottom of the rectangular frame. A fixed frame is movably connected to the opposite side of each of the two vertical plates. A converging pipe is fixedly connected to the inner wall of the fixed frame. Multiple linearly equidistant nozzles are arranged on the outside of the converging pipe. Both ends of the converging pipe are connected to conveying pipes via flanges. Two symmetrical fixed frames are fixedly connected to the upper side of the mounting frame. A flat plate is fixedly connected to the opposite side of each of the two fixed frames. Multiple equidistant mud rakes are slidably connected to the flat plate, and a connecting plate is fixedly connected to the upper side of each mud rake. Two symmetrical rectangular openings are opened on the upper side of the flat plate. Movable rods are slidably connected inside each rectangular opening. Limit blocks are fixedly connected to the upper side of each of the two movable rods. The upper sides of the two limit blocks are in contact with the bottom of the connecting plate. Two symmetrical springs are fixedly connected to the opposite side of the connecting plate and the flat plate.

[0008] By incorporating a sloping rinsing module, the module utilizes a rectangular frame and a converging pipe to controllably tighten and expand the filter cloth according to its type and pore size. This improves the rinsing effect while ensuring that the filter cloth is not damaged.

[0009] In a preferred embodiment, the angle adjustment module includes two symmetrical sliding grooves, each located on one side of a pair of long rods. A single translation plate is slidably connected within the two grooves. A second motor is fixedly connected to the bottom of the translation plate. The output end of the second motor is connected to a third gear via a coupling. A rack is fixedly connected to the bottom of one of the long rods, meshing with the third gear. A connecting rod is movably connected to the bottom of the rectangular frame. Two symmetrical slots are opened on the outside of the connecting rod. A single sliding element is slidably connected within these slots. The end of the sliding element away from the connecting rod is movably connected to the upper side of the translation plate. A circular hole is opened at the bottom of the connecting rod. A second spring is fixedly connected to the inner wall of the top of the circular hole. The end of the second spring away from the connecting rod is fixedly connected to the outside of the sliding element.

[0010] By incorporating an angle adjustment module, which utilizes a translation plate and connecting rod, the rinsing angle of the filter cloth can be quickly changed during the rinsing process, improving the convenience of rinsing and accelerating the rinsing efficiency of the device.

[0011] In a preferred embodiment, the fixing module includes multiple symmetrical vertical rods. The bottoms of two vertical rods on the same plane are fixedly connected to the same slide rail. Each slide rail has a slidingly connected insert plate. The bottoms of the two insert plates are fixedly connected to the upper sides of two short rods, respectively. Both the insert plates and the upper sides of the slide rails have two symmetrical positioning holes, and the same fixing pin is slidably connected to the two positioning holes. A spring is fixedly connected to the side of the fixing pin opposite to the slide rail. Adjustment grooves are provided on the opposite sides of the two slide rails. Movable pieces are slidably connected to the two adjustment grooves, and clamps are movably connected to the opposite sides of the two movable pieces. The exteriors of the two clamps are respectively fitted to the bottoms of the two short rods. Tenons are fixedly connected to the opposite sides of the two slide rails. Adjustment bolts are movably connected to the two tenons. Protrusions are provided on the exteriors of the adjustment bolts, and the two protrusions are fixedly connected to the opposite sides of the two movable pieces, respectively.

[0012] By incorporating a fixing module, which utilizes fixing pins and clamps, the slide rail and short rod can be quickly fixed and disassembled, greatly saving workers' time spent on assembly and disassembly, improving workers' installation efficiency. The lockable fixing pins and clamps also ensure the stability of the device during use.

[0013] As can be seen from the above, the sludge filter press backwashing system provided by the present invention has the effect of stretching and tightening the filter press cloth by using the inclined flushing module, expanding the filter holes on the filter press cloth, so that the sludge blocking the filter holes can be effectively cleaned, which greatly improves the efficiency of flushing and cleaning. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a sludge filter cloth backwashing system proposed in this invention;

[0015] Figure 2 This is a side view of the backwashing system for filter cloth in a sludge filter press proposed in this invention.

[0016] Figure 3 This is a schematic diagram of the inclined flushing module structure of a sludge filter cloth backwashing system proposed in this invention;

[0017] Figure 4 This is a schematic diagram of the long rod structure of a sludge filter cloth backwashing system proposed in this invention;

[0018] Figure 5 This is a schematic diagram of a planar plate structure of a sludge filter cloth backwashing system proposed in this invention;

[0019] Figure 6 This is a schematic diagram of the angle adjustment module structure of the sludge filter cloth backwashing system proposed in this invention;

[0020] Figure 7 This is a schematic diagram of the fixed module structure of a sludge filter cloth backwashing system proposed in this invention.

[0021] In the diagram: 1. Mounting frame; 2. Support frame; 3. Filter cloth; 4. Mud inlet; 5. Mud outlet; 6. Inclined flushing module; 601. Short rod; 602. Long rod; 603. Strip trough; 604. Support one; 605. Lever arm; 606. Rectangular frame; 607. Rotating roller; 608. Support two; 609. Bidirectional lead screw; 610. Movable seat; 611. Gear one; 612. Motor one; 613. Gear two; 614. Vertical plate; 615. Converging pipe; 616. Conveying pipe; 617. Nozzle; 618. Fixing frame; 619. Flat plate; 620. Mud rake; 621. Connecting plate; 622. 623. Rectangular opening; 624. Movable rod; 625. Limiting block; 626. Spring 1; 627. Fixed frame; 708. Angle adjustment module; 709. Slide groove; 7000. Translation plate; 701. Motor 2; 702. Gear 3; 703. Rack; 704. Connecting rod; 705. Strip opening; 706. Sliding component; 707. Spring 2; 808. Fixed module; 809. Vertical rod; 8000. Slide rail; 8001. Fitting plate; 8002. Positioning hole; 8003. Fixing pin; 8004. Spring 3; 8005. Adjusting groove; 8006. Adjusting bolt; 8007. Movable piece; 810. Clamp; 811. Protrusion. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] The sludge filter press filter cloth backwashing system disclosed in this invention is mainly applied to scenarios where the backwashing efficiency of existing sludge filter press filter cloth backwashing systems is poor.

[0024] Reference Figure 1-7A sludge filter press filter cloth backwashing system includes a mounting frame 1. The bottom of the mounting frame 1 is bolted to two symmetrical support frames 2, and a filter cloth 3 is mounted on the mounting frame 1. The upper side of the mounting frame 1 is bolted to a sludge inlet 4, which is located above the filter cloth 3. One of the support frames 2 is provided with a sludge discharge port 5, which is located outside the filter cloth 3. Two symmetrical fixing modules 8 are provided below the mounting frame 1. An angle adjustment module 7 is provided below the mounting frame 1, and an inclined flushing module 6 is provided between the two fixing modules 8.

[0025] Specifically, after fixing the inclined flushing module 6 to the mounting frame 1 using the fixing module 8, the inclined flushing module 6 is used to lift the filter cloth 3, causing it to bulge and extend. After thoroughly flushing the bulging part of the filter cloth 3, the angle adjustment module 7 is used to change the flushing angle of the filter cloth 3, so that the sludge flushed from the bulging part can detach from the flushing part along the bulging inclined surface. After flushing this part is completed, the next part is flushed. The device can stretch and tighten the filter cloth 3 using the inclined flushing module 6, expanding the filter holes on the filter cloth 3, so that the sludge clogging the filter holes can be effectively cleaned, greatly improving the flushing and cleaning efficiency.

[0026] Reference Figure 3 , Figure 4 and Figure 5In a preferred embodiment, the inclined flushing module 6 includes two symmetrical short rods 601. Two symmetrical long rods 602 are bolted to opposite sides of the two short rods 601. Each of the two long rods 602 has two symmetrical strip grooves 603 on its upper side. A support 604 is slidably connected within each strip groove 603. A lever arm 605 is rotatably connected to one side of each support 604 via a bearing. The end of each lever arm 605 away from the support 604 is rotatably connected to the same rectangular frame 606 via a bearing. Two symmetrical notches are provided on the upper side of the rectangular frame 606, and rotating rollers are rotatably connected to each notch via bearings. 607; Two symmetrical supports 608 are bolted to the upper sides of the two long rods 602. A single double-acting lead screw 609 is rotatably connected to the two supports 608 on the same long rod 602 via bearings. Two symmetrical movable seats 610 are provided on the outside of each double-acting lead screw 609, and the two movable seats 610 on the same long rod 602 are bolted to the outside of the two supports 604 respectively. A gear 611 is bolted to the outside of the double-acting lead screw 609, located between the two supports 608. A motor 612 is bolted to the upper side of the long rod 602. The output ends of 612 are all connected to gear 613 via couplings, and gear 613 meshes with gear 611. The bottom of the rectangular frame 606 is bolted to two symmetrical vertical plates 614. The opposite sides of the two vertical plates 614 are rotatably connected to the same fixed frame 626 via bearings. The inner wall of the fixed frame 626 is bolted to a converging pipe 615. Multiple linearly equidistant nozzles 617 are provided on the outside of the converging pipe 615. Both ends of the converging pipe 615 are connected to conveying pipes 616 via flanges. The upper side of the mounting bracket 1 is bolted to two symmetrical fixed brackets 618. 8. On opposite sides, a flat plate 619 is bolted to the same side. Multiple equidistant mud rakes 620 are slidably connected to the flat plate 619. The upper sides of the multiple mud rakes 620 are all bolted to the same connecting plate 621. Two symmetrical rectangular openings 622 are opened on the upper side of the flat plate 619. Movable rods 623 are slidably connected in each rectangular opening 622. Limiting blocks 624 are bolted to the upper sides of the two movable rods 623. The upper sides of the two limiting blocks 624 are in contact with the bottom of the connecting plate 621. On the opposite side of the connecting plate 621 and the flat plate 619, two symmetrical springs 625 are bolted to the connecting plate 621.

[0027] Specifically, by grasping the connecting plate 621, the connecting plate 621 overcomes the tension of the spring 625, causing the mud rake 620 to rise and be pulled up. The movable rod 623 is pushed, causing the movable rod 623 to move the limiting block 624 below the connecting plate 621 and fix the position of the connecting plate 621. The motor 612 is started, and the motor 612 drives the gear 611 meshing with the gear 613, causing the double-acting screw 609 to rotate. This causes the movable seat 610 to drive the support 604 to push the force arm 605 to lift the rectangular frame 606 upward. This causes the rotating roller 607 on the rectangular frame 606 to make the filter cloth 3 bulge upward and tighten. The converging pipe 615 on the fixed frame 626 sprays the cleaning agent for rinsing conveyed in the conveying pipe 616 at high speed through the nozzle 617, flushing out the sludge in the expanded filter holes of the bulging part on the filter cloth 3.

[0028] In specific application scenarios, the inclined flushing module 6 is mainly suitable for the inclined flushing stage in the inclined flushing process. That is, the inclined flushing module 6 uses the rectangular frame 606 and the converging pipe 615 to controllably tighten and expand the filter cloth 3 according to the type of filter cloth 3 and the size of the filter holes. While improving the flushing effect, it can also ensure that the filter cloth 3 will not be damaged.

[0029] Reference Figure 6 In a preferred embodiment, the angle adjustment module 7 includes two symmetrical sliding grooves 701, which are respectively opened on opposite sides of two long rods 602. A common translation plate 702 is slidably connected within the two sliding grooves 701. A second motor 703 is bolted to the bottom of the translation plate 702. The output end of the second motor 703 is connected to a third gear 704 via a coupling. A rack 705 is bolted to the bottom of one of the long rods 602, and the rack 705 meshes with the third gear 704. A rectangular frame 60... The bottom of 6 is rotatably connected to a connecting rod 706 via a bearing. The connecting rod 706 has two symmetrical slots 707 on its outside. The same sliding member 708 is slidably connected inside the two slots 707. The end of the sliding member 708 away from the connecting rod 706 is rotatably connected to the upper side of the translation plate 702 via a bearing. The bottom of the connecting rod 706 has a round hole. The top inner wall of the round hole is connected to a second spring 709 via bolts. The end of the second spring 709 away from the connecting rod 706 is connected to the outside of the sliding member 708 via bolts.

[0030] Specifically, after the inclined flushing module 6 cleans the center of the raised part of the filter cloth 3, the second motor 703 is started. The second motor 703 drives the third gear 704, which meshes with the rack 705, to rotate, so that the translation plate 702 can move in the slide groove 701. This causes the translation plate 702 to pull the sliding part 708, which in turn drives the connecting rod 706 to pull the fixed frame 626 to rotate left and right. This allows the nozzles 617 on the fixed frame 626 to flush away the sewage generated from rinsing the center of the raised part from the inclined surfaces on both sides of the raised part.

[0031] In specific application scenarios, the angle adjustment module 7 is mainly used for the angle adjustment stage in the angle adjustment process. That is, the angle adjustment module 7 can quickly change the rinsing angle of the pressure filter cloth 3 when the device is rinsing the pressure filter cloth 3 by using the translation plate 702 and the connecting rod 706, which improves the convenience of rinsing and the rapid change of the rinsing angle also speeds up the rinsing efficiency of the device.

[0032] Reference Figure 7 In a preferred embodiment, the fixing module 8 includes a plurality of symmetrical vertical rods 801. The bottoms of two vertical rods 801 located on the same plane are bolted to the same slide rail 802. A fitting plate 803 is slidably connected within each of the two slide rails 802. The bottoms of the two fitting plates 803 are bolted to the upper sides of two short rods 601 respectively. Two symmetrical positioning holes 804 are provided on the upper sides of both the fitting plates 803 and the slide rails 802. A fixing pin 805 is slidably connected within each of the two positioning holes 804. A spring is fixedly connected to the side of the fixing pin 805 opposite to the slide rail 802. 806. Each of the two slide rails 802 has an adjustment groove 807 on its opposite side. Each of the two adjustment grooves 807 has a movable piece 809 slidably connected to it. Each of the two movable pieces 809 has a clamp 810 rotatably connected to its opposite side via a bearing. The outside of the two clamps 810 is respectively attached to the bottom of the two short rods 601. Each of the two slide rails 802 has a tenon connected to its opposite side via a bolt. Each of the two tenons has an adjustment bolt 808 rotatably connected to it via a bearing. Each of the adjustment bolts 808 has a protrusion 811 on its outside. Each of the two protrusions 811 is respectively connected to the opposite side of the two movable pieces 809 via bolts.

[0033] Specifically, when installing the short rod 601 into the mounting bracket 1, the fixing pin 805 is pulled out from the positioning hole 804 by overcoming the tension of the spring 806. The fitting plate 803 connected to the short rod 601 is inserted into the slide rail 802. The fixing pin 805 is then released and inserted into the positioning hole 804 on the slide rail 802 and the fitting plate 803 for fixation. The clamp 810 is rotated so that the bottom of the clamp 810 is parallel to the bottom of the short rod 601. The adjusting bolt 808 is turned, and the adjusting bolt 808 drives the protrusion 811 so that the movable piece 809 connected to the protrusion 811 moves upward in the adjusting groove 807. This causes the movable piece 809 to drive the clamp 810 to fully fit with the bottom of the short rod 601, so that the short rod 601 can be fixed on the slide rail 802.

[0034] In specific application scenarios, the fixing module 8 is mainly used in the fixing process. That is, the fixing module 8 can quickly fix and disassemble the slide rail 802 and the short rod 601 by using the fixing pin 805 and the clamp 810, which greatly saves the time spent by the workers in the disassembly and assembly, and improves the installation efficiency of the workers. The lockable fixing pin 805 and clamp 810 also ensure the stability of the device during use.

[0035] Working principle: When the short rod 601 is installed into the mounting bracket 1, the fixing pin 805 is pulled out from the positioning hole 804 by overcoming the tension of the spring 806. The fitting plate 803 connected to the short rod 601 is inserted into the slide rail 802. The fixing pin 805 is then released and inserted into the positioning hole 804 on the slide rail 802 and the fitting plate 803 for fixation. The clamp 810 is rotated so that the bottom of the clamp 810 is parallel to the bottom of the short rod 601. The adjusting bolt 808 is turned, and the adjusting bolt 808 drives the convex... Block 811 causes the movable piece 809 connected to the protrusion 811 to move upward in the adjusting groove 807, thereby causing the movable piece 809 to drive the clamp 810 to fully fit against the bottom of the short rod 601, so that the short rod 601 can be fixed on the slide rail 802; grasping the connecting plate 621 causes the connecting plate 621 to overcome the tension of the spring 625 and drive the mud rake 620 to rise and be pulled up, pushing the movable rod 623 so that the movable rod 623 drives the limiting block 624 to move below the connecting plate 621 and fix the position of the connecting plate 621, starting. Motor 612 drives gear 611, which meshes with gear 613, causing the double-ended lead screw 609 to rotate. This, in turn, causes the movable seat 610 to drive the support 604 to push the force arm 605, lifting the rectangular frame 606 upwards. The rotating roller 607 on the rectangular frame 606 then causes the filter cloth 3 to bulge upwards and become taut. The collecting pipe 615 on the fixed frame 626 sprays the rinsing cleaning agent, conveyed in the conveying pipe 616, at high speed through the nozzle 617, which then sprays the expanded filter holes in the bulging portion of the filter cloth 3. The sludge is flushed out; after the center of the raised part of the filter cloth 3 is cleaned by the inclined flushing module 6, the motor 2 703 is started. The motor 2 703 drives the gear 3 704 that meshes with the rack 705 to rotate, so that the translation plate 702 can move in the slide groove 701. This causes the translation plate 702 to pull the sliding part 708 to drive the connecting rod 706 to pull the fixed frame 626 to rotate left and right. This allows the nozzle 617 on the fixed frame 626 to flush away the sewage generated by rinsing the center of the raised part from the inclined surfaces on both sides of the raised part.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sludge filter press filter cloth backwashing system, comprising a mounting frame (1), characterized in that, The bottom of the mounting frame (1) is fixedly connected to two symmetrical support frames (2), and a filter cloth (3) is provided on the mounting frame (1). A mud inlet (4) is fixedly connected to the upper side of the mounting frame (1). The mud inlet (4) is located above the filter cloth (3). A mud discharge port (5) is provided on one of the support frames (2), and the mud discharge port (5) is located outside the filter cloth (3). Two symmetrical fixing modules (8) are provided below the mounting frame (1). An angle adjustment module (7) is provided below the mounting frame (1), and a slope flushing module (6) is provided between the two fixing modules (8). The inclined flushing module (6) includes two symmetrical short rods (601). Two symmetrical long rods (602) are fixedly connected to one side of the two short rods (601). Two symmetrical strip grooves (603) are opened on the upper side of the two long rods (602). A support (604) is slidably connected in the strip grooves (603). A lever arm (605) is movably connected to one side of the support (604). The end of the lever arm (605) away from the support (604) is movably connected to the same rectangular frame (606). Two symmetrical notches are opened on the upper side of the rectangular frame (606). A rotating roller (607) is movably connected in the notches. Two symmetrical supports (608) are fixedly connected to the upper side of each of the two long rods (602). The same double-acting screw (609) is movably connected to the two supports (608) on the same long rod (602). Two symmetrical movable seats (610) are provided on the outside of the double-acting screw (609). The two movable seats (610) on the same long rod (602) are fixedly connected to the outside of the two supports (604). Gear (611) is fixedly connected to the outside of the double-acting screw (609). Gear (611) is located between the two supports (608). Motor (612) is bolted to the upper side of the long rod (602). The output end of motor (612) is connected to gear (613) through a coupling. Gear (613) meshes with gear (611). The bottom of the rectangular frame (606) is fixedly connected to two symmetrical vertical plates (614). The two vertical plates (614) are movably connected to the same fixed frame (626) on opposite sides. The inner wall of the fixed frame (626) is fixedly connected to a converging pipe (615). Multiple linearly equidistant nozzles (617) are provided on the outside of the converging pipe (615). Both ends of the converging pipe (615) are connected to a conveying pipe (616) through flanges. The upper side of the mounting frame (1) is fixedly connected to two symmetrical fixed frames (618). The opposite side of the two fixed frames (618) is fixedly connected to the same flat plate (619). Multiple equidistant mud rakes (620) are slidably connected on the flat plate (619). The upper side of the multiple mud rakes (620) is fixedly connected to the same connecting plate (621). The upper side of the flat plate (619) has two symmetrical rectangular openings (622), and each rectangular opening (622) is slidably connected to a movable rod (623). The upper side of each movable rod (623) is fixedly connected to a limit block (624). The upper side of each limit block (624) is in contact with the bottom of the connecting plate (621), and two symmetrical springs (625) are fixedly connected to the side of the connecting plate (621) opposite to the flat plate (619).

2. The sludge filter cloth backwashing system for a sludge filter press according to claim 1, characterized in that, The angle adjustment module (7) includes two symmetrical slides (701). The two slides (701) are respectively opened on the opposite side of the two long rods (602). The same translation plate (702) is slidably connected in the two slides (701). The bottom of the translation plate (702) is fixedly connected to the second motor (703). The output end of the second motor (703) is connected to the third gear (704) through a coupling. The bottom of one of the long rods (602) is fixedly connected to the rack (705). The rack (705) meshes with the third gear (704).

3. The sludge filter press filter cloth backwashing system according to claim 2, characterized in that, The bottom of the rectangular frame (606) is movably connected to a connecting rod (706). Two symmetrical strip openings (707) are opened on the outside of the connecting rod (706). The same sliding member (708) is slidably connected in the two strip openings (707). The end of the sliding member (708) away from the connecting rod (706) is movably connected to the upper side of the translation plate (702). A circular hole is opened at the bottom of the connecting rod (706). A second spring (709) is fixedly connected to the inner wall of the top of the circular hole. The end of the second spring (709) away from the connecting rod (706) is fixedly connected to the outside of the sliding member (708).

4. The sludge filter press filter cloth backwashing system according to claim 1, characterized in that, The fixing module (8) includes multiple symmetrical vertical rods (801). The bottom of two vertical rods (801) located on the same plane is fixedly connected to the same slide rail (802). The two slide rails (802) are slidably connected to each other with a fitting plate (803). The bottom of the two fitting plates (803) is fixedly connected to the upper side of the two short rods (601) respectively. The upper side of the fitting plate (803) and the slide rail (802) are provided with two symmetrical positioning holes (804). The two positioning holes (804) are slidably connected to the same fixing pin (805).

5. The sludge filter press filter cloth backwashing system according to claim 4, characterized in that, The fixed pin (805) is fixedly connected to the side opposite to the slide rail (802) by a spring three (806). The two slide rails (802) are provided with adjustment grooves (807) on opposite sides. Movable pieces (809) are slidably connected in the two adjustment grooves (807). The two movable pieces (809) are movably connected to clamps (810) on opposite sides. The outside of the two clamps (810) are respectively attached to the bottom of the two short rods (601).

6. The sludge filter press filter cloth backwashing system according to claim 5, characterized in that, Each of the two slide rails (802) has a tenon fixedly connected to its opposite side, and an adjusting bolt (808) is movably connected to each of the two tenons. The adjusting bolt (808) has a protrusion (811) on its outside, and the two protrusions (811) are fixedly connected to the opposite side of the two movable pieces (809).

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