A sludge recycling filtration device and a filtration method

Abstract

The present invention discloses a sludge recovery filtering device and a filtering method, belonging to the technical field of sludge recovery. The sludge recovery filtering device includes a box body; a water inlet pipe is arranged at one end of the box body, a water outlet pipe is arranged at the end of the box body far away from the water inlet pipe, a filtering plate is arranged inside the box body, a conveyor belt is arranged at the bottom inside the box body, the conveyor belt is arranged at the bottom of the filtering plate, rotating shafts are arranged at both ends inside the conveyor belt, and both ends of the rotating shafts are rotatably connected to the side walls of the box body. An auxiliary component is arranged on the conveyor belt, and a dredging component is arranged on the side of the filtering plate close to the water outlet pipe. During use, the motor is started to drive the rotating shafts to rotate, thereby making the conveyor belt rotate, so that the sludge piled up in a slope shape on the side of the filtering plate close to the water inlet pipe is conveyed towards the direction of the water inlet pipe, avoiding the problem that the sludge is piled up in a slope shape on one side of the filtering plate, resulting in the chamber space separated by the filtering plate not being fully utilized, and the filtering plate being blocked due to the accumulation of sludge.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge recovery, and specifically to a sludge recovery filtering device and a filtering method. Background Art

[0002] Sludge recovery is necessary in various situations such as environmental protection, resource utilization, reduction and cost control, and compliance requirements. Especially in the process of sewage treatment and resource utilization, and the sludge recovery filtering device is a key equipment used for separating and treating sludge in the sewage treatment process, aiming to reduce the sludge volume, improve the solid recovery rate, and ensure that the treated water meets the discharge standards.

[0003] Chinese Patent Publication No.: CN219558940U discloses a separation and filtration device for water treatment sludge utilization, including a separation and filtration tank, a filtration component, and a scraping mechanism. Multiple filtration components are arranged at equal intervals inside the separation and filtration tank, and a scraping mechanism is arranged in front of each filtration component. The scraping mechanism is horizontally arranged on two support frames; the filtration component includes a frame body, a filter plate rotatably arranged in the central hole of the frame body, and a driving mechanism for driving the filter plate to rotate; the scraping mechanism includes a rubber scraping plate and a U-shaped frame. The rubber scraping plate is fixed on the bottom cross plate of the U-shaped frame and abuts against the filter plate.

[0004] In the prior art, when filtering and recovering sludge, multiple groups of filter meshes are arranged in the separation and filtration tank to filter and recover the sludge. In actual use, when water flows through the filter mesh, due to the presence of the filter mesh, the water flow path is changed, resulting in a decrease in the local flow velocity, and the filter mesh blocks large-particle suspended matters and sludge. At this time, suspended matters such as sludge in the water will gradually settle to one side of the filter mesh. With the continuous deposition of sludge and the flowing action of water, the sludge on one side of the filter mesh will accumulate in a slope shape, thereby causing the filter mesh to be covered by sludge, resulting in a reduction in its effective filtration area, a slow filtration speed, and even a problem of complete blockage.

[0005] Therefore, it is necessary to provide a sludge recovery filtering device and a filtering method to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a sludge recovery filtering device and a filtering method to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A sludge recovery filtration device includes a box body; a water inlet pipe is provided at one end of the box body, a water outlet pipe is provided at the end of the box body away from the water inlet pipe, a filter plate is provided inside the box body, a conveyor belt is provided at the bottom inside the box body, the conveyor belt is arranged at the bottom of the filter plate, rotating shafts are provided at both ends inside the conveyor belt, and both ends of the rotating shafts are rotatably connected to the side walls of the box body. An auxiliary component is provided on the conveyor belt, and a dredging component is provided on the side of the filter plate close to the water outlet pipe. When the conveyor belt rotates, the conveyor belt drives the auxiliary component to rotate, and the auxiliary component prompts the dredging component to move relative to the filter plate.

[0008] As a further aspect of the present invention: The auxiliary component includes a scraper; a connecting column is fixedly provided at the center of the bottom of the scraper, and multiple groups of the scrapers are horizontally arranged in an array. One end of multiple groups of connecting columns away from the scraper is rotatably provided with a bottom plate, and one end of the connecting column away from the scraper passes through the side wall of the conveyor belt.

[0009] As a further aspect of the present invention: An installation part is provided on the side wall of the conveyor belt, one end of the connecting column away from the scraper slidably passes through the side wall of the installation part, the bottom plate is arranged on the side of the installation part away from the scraper, a support rod is provided inside the side wall of the conveyor belt, both ends of the support rod protrude from the side wall of the conveyor belt, and a sliding groove that slidably fits with the support rod is provided on the inner wall of the box body.

[0010] As a further aspect of the present invention: A thread groove is provided on the outer peripheral side wall of the connecting column, a positioning column that slidably fits with the thread groove is provided on the inner wall of the installation part, a guide rail that slidably fits with the bottom plate is provided inside the side wall of the box body, and a notch corresponding to the connecting column is provided on the bottom side wall of the filter plate.

[0011] As a further aspect of the present invention: The guide rail includes a smooth part; a descending part and a lifting part are respectively provided at both ends of the smooth part, and multiple groups of concave parts are provided between the descending part and the lifting part.

[0012] As a further aspect of the present invention: The dredging component includes two movable plates; the two movable plates are respectively arranged on both sides of the filter plate and are elastically slidably connected to the side wall of the box body. A middle plate is elastically slidably connected between the two movable plates. A push plate is provided on the side of the middle plate close to the filter plate, a top rod is provided on the side of the push plate close to the filter plate, a transmission component is provided on the side of the movable plate close to the notch, and one end of the transmission component away from the movable plate extends into the notch.

[0013] As a further aspect of the present invention: The inner wall of the box body is symmetrically provided with a reciprocating groove along the center, the reciprocating groove is arranged on the side of the filter plate close to the water outlet pipe, and one end of the middle plate close to the box body slidably extends into the reciprocating groove.

[0014] As a further solution of the present invention: the reciprocating groove includes a transverse groove; at the top of one end of the transverse groove close to the filter plate, an inclined groove is connected. A first clamping block is arranged inside one end of the transverse groove close to the inclined groove, and a second clamping block is arranged inside one end of the inclined groove far from the transverse groove. Both the first clamping block and the second clamping block are elastically connected to the inner wall of the box body. A reset groove is communicated between one end of the inclined groove far from the transverse groove and one end of the transverse groove far from the filter plate. An auxiliary groove is arranged at the top end of the inclined groove, and one end of the auxiliary groove far from the inclined groove is communicated with the reset groove.

[0015] As a further solution of the present invention: the transmission assembly includes an L-shaped rod; the L-shaped rod is arranged on one side of the movable plate close to the notch. One end of the L-shaped rod far from the movable plate is rotatably connected with an arc-shaped plate, and one end of the L-shaped rod far from the movable plate is slidably adapted to the notch.

[0016] A method for filtering sludge using the sludge recovery and filtration device described in any one of the above, comprising the following steps:

[0017] S1. Introduce sewage into the box body through the water inlet pipe;

[0018] S2. Start the rotation of the rotating shaft, and then the rotating shaft drives the conveyor belt and the auxiliary assembly to rotate to scrape the sludge;

[0019] S3. The rotation of the auxiliary assembly causes the dredging assembly to move relative to the filter plate;

[0020] S4. Complete the sludge filtration work and turn off the rotating shaft.

[0021] Compared with the prior art, the beneficial effects of the present invention are: during use, start the motor to drive the rotation of the rotating shaft, and then make the conveyor belt rotate, so that the sludge piled up in a slope shape on the side of the filter plate close to the water inlet pipe is conveyed towards the water inlet pipe, avoiding the problem that the sludge is piled up in a slope shape on one side of the filter plate, resulting in the underutilization of the chamber space separated by the filter plate and the blockage of the filter plate caused by the accumulation of sludge. The contact area with the sludge is increased through the auxiliary assembly, thereby effectively conveying the sludge towards the water inlet pipe and avoiding the problem that the friction force between the conveyor belt and the sludge is small and cannot drive the sludge to move towards the water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front three-dimensional structure schematic diagram of the present invention.

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the middle part of the present invention.

[0024] Figure 3 For the present invention Figure 2 The structure schematic diagram at A in.

[0025] Figure 4 This is a schematic structural diagram of the auxiliary component in the present invention.

[0026] Figure 5 For the present invention Figure 4 This is a schematic structural diagram of the position C in the present invention.

[0027] Figure 6 For the present invention Figure 2 This is a schematic structural diagram of the position B in the present invention.

[0028] Figure 7 This is a schematic structural diagram of the guide rail in the present invention.

[0029] Figure 8 This is a schematic structural diagram of the notch in the present invention.

[0030] Figure 9 This is a schematic structural diagram of the reciprocating groove in the present invention.

[0031] Figure 10 This is a schematic structural diagram of the transmission component in the present invention.

[0032] In the figure: 1, box body; 2, water inlet pipe; 3, water outlet pipe; 4, filter plate; 5, dredging component; 51, movable plate; 52, L-shaped rod; 53, push plate; 54, middle plate; 55, reciprocating groove; 551, horizontal groove; 552, inclined groove; 553, first clamping block; 554, second clamping block; 555, reset groove; 556, auxiliary groove; 56, arc-shaped plate; 6, conveyor belt; 7, rotating shaft; 8, scraping plate; 9, connecting column; 10, bottom plate; 11, guide rail; 111, smooth part; 112, concave part; 113, descending part; 114, lifting part; 12, mounting part; 13, positioning column; 14, notch. Detailed implementation manners

[0033] Please refer to Figures 1-10 , in an embodiment of the present invention, a sludge recycling filtering device and a filtering method include a box body 1, a water inlet pipe 2 is arranged at one end of the box body 1, a water outlet pipe 3 is arranged at the end of the box body 1 far from the water inlet pipe 2, a filter plate 4 is arranged in the box body 1, a conveyor belt 6 is arranged at the bottom of the inner part of the box body 1, the conveyor belt 6 is arranged at the bottom of the filter plate 4, rotating shafts 7 are arranged at both ends inside the conveyor belt 6, both ends of the rotating shafts 7 are rotatably connected to the side walls of the box body 1, an auxiliary component is arranged on the conveyor belt 6, and a dredging component 5 is arranged on the side of the filter plate 4 close to the water outlet pipe 3. When the conveyor belt 6 rotates, the conveyor belt 6 drives the auxiliary component to rotate, and the auxiliary component causes the dredging component 5 to move relative to the filter plate 4.

[0034] Preferably, in this embodiment, the filter plate 4 is fixedly installed in the box body 1 by means of clamping or bolts, so as to facilitate the installation and disassembly of the filter plate 4. A plurality of groups of filter plates 4 are evenly arranged in an array in the box body 1, and the box body 1 is evenly divided into multiple chambers for filtering sewage. Moreover, the density of the multiple groups of filter plates 4 increases sequentially from the water inlet pipe 2 to the water outlet pipe 3. In this way, the effect of multi-stage filtering of the sewage entering the box body 1 is achieved, so as to realize the filtering and recovery of sludge. A motor for driving the rotating shaft 7 to rotate is arranged on the periphery of the box body 1.

[0035] During use, sewage is introduced into the box body 1 through the water inlet pipe 2. The sewage entering the box body 1 will flow in the box body 1 towards the direction of the water outlet pipe 3, and the sludge in the sewage is filtered and separated under the action of the filter plate 4. Then, the sewage after filtering the sludge is discharged from the water outlet pipe 3. During the sludge filtering process, the motor is started to drive the rotating shaft 7 to rotate from the water outlet pipe 3 towards the water inlet pipe 2, that is, the rotating shaft 7 rotates counterclockwise. Furthermore, the conveyor belt 6 rotates from the water outlet pipe 3 towards the water inlet pipe 2, that is, the conveyor belt 6 rotates counterclockwise. The rotating conveyor belt 6 will convey the sludge piled up in a slope shape on the side of the filter plate 4 close to the water inlet pipe 2 towards the water inlet pipe 2, avoiding the problem that the sludge is piled up in a slope shape on one side of the filter plate 4, resulting in the underutilization of the chamber space separated by the filter plate 4 and the blockage of the filter plate 4 due to the accumulation of sludge. By rotating the conveyor belt 6, the chambers separated by the multiple groups of filter plates 4 in the box body 1 can be fully utilized, and the problem of the sludge being piled up in a slope shape on one side of the filter plate 4 is avoided. In addition, the rotation of the conveyor belt 6 will drive the auxiliary component to rotate. The auxiliary component is arranged on the periphery of the conveyor belt 6. In this way, when the conveyor belt 6 rotates, the contact area with the sludge is increased through the auxiliary component, and then the sludge is effectively conveyed towards the water inlet pipe 2, avoiding the problem that the frictional force between the conveyor belt 6 and the sludge is small and the sludge cannot be driven to move towards the water inlet pipe 2.

[0036] Please refer to Figures 1-7, preferably, the auxiliary component includes a scraper 8; a connecting column 9 is fixedly arranged at the center of the bottom of the scraper 8, and multiple groups of the scrapers 8 are horizontally arranged in an array along the width direction of the box body 1. One ends of the multiple groups of connecting columns 9 away from the scraper 8 are rotatably provided with a bottom plate 10. The bottom plate 10 is arranged in the conveyor belt 6, and one ends of the connecting columns 9 away from the scraper 8 pass through the side wall of the conveyor belt 6. During actual use, when the conveyor belt 6 rotates, the conveyor belt 6 drives the scraper 8 to rotate in the box body 1 through the connecting column 9. When the scraper 8 rotates to the side of the conveyor belt 6 close to the filter plate 4, since the scraper 8 protrudes from the top of the conveyor belt 6, the scraper 8 will scrape the bottom part of the sludge accumulated on one side of the filter screen towards the water inlet pipe 2, thereby reducing the height of the sludge accumulated on the side of the filter plate 4 close to the water inlet pipe 2, and promoting the sludge to spread out in the box body 1, and improving the filtering efficiency of the filter plate 4.

[0037] Preferably, an installation part 12 is arranged on the side wall of the conveyor belt 6. One end of the connecting column 9 away from the scraper 8 slidably passes through the side wall of the installation part 12. The bottom plate 10 is arranged on the side of the installation part 12 away from the scraper 8. The installation part 12 can be made of a rigid material, which is convenient for the installation work of the connecting column 9, and the width of the installation part 12 is very narrow, so as not to affect the overall rotation and conveying effect of the conveyor belt 6.

[0038] In order to improve the overall stability of the conveyor belt 6 and prevent the conveyor belt 6 from sagging and affecting the rotation effect, a support rod is arranged inside the side wall of the conveyor belt 6. Both ends of the support rod protrude from the side wall of the conveyor belt 6. A sliding groove that fits the support rod is arranged on the inner wall of the box body 1. During actual use, multiple groups of the support rods are evenly arranged in an array along the shape of the conveyor belt 6 inside the conveyor belt 6.

[0039] Further, preferably, a threaded groove is provided on the outer peripheral side wall of the connecting column 9, and a positioning column 13 slidably adapted to the threaded groove is provided on the inner wall of the mounting portion 12. A guide rail 11 slidably adapted to the bottom plate 10 is provided inside the side wall of the box body 1. A notch 14 corresponding to the connecting column 9 is provided on the bottom side wall of the filter plate 4. During actual use, the number and position of the notches 14 are arranged in one-to-one correspondence with the number and position of the connecting columns 9, and the width of the notch 14 is slightly larger than the width of the scraping plate 8. That is, the notch 14 allows the scraping plate 8 to pass through the filter plate 4 in a state parallel to the water inlet pipe 2 and the water outlet pipe 3. When the scraping plate 8 is in the initial state close to the filter plate 4 of the conveyor belt 6 and the scraping plate 8 is located at a position close to the water outlet pipe 3, at this time, multiple scraping plates 8 are in a relatively horizontal state. The bottom plate 10 is in a position close to the mounting portion 12 under the action of the guide rail 11. At this time, when the conveyor belt 6 rotates, it drives the scraping plate 8 to rotate to scrape the accumulated sludge. When the bottom plate 10 rotates to a position close to the dredging assembly 5, the bottom plate 10 moves downward under the action of the guide rail 11, so that the connecting column 9 moves downward on the mounting portion 12. Subsequently, through the cooperation of the positioning column 13 and the threaded groove, the connecting column 9 rotates 270°, that is, multiple scraping plates 8 are in a parallel state. Subsequently, when the conveyor belt 6 rotates, the scraping plate 8 can pass through a set of filter plates 4 close to the water outlet pipe 3 through the notch 14. Subsequently, the bottom plate 10 moves upward close to the mounting portion 12 under the action of the guide rail 11, so that the scraping plate 8 rotates to a horizontal state again, thereby scraping the sludge on one side of a set of filter plates 4 close to the water outlet pipe 3 again. In this way, reciprocatingly, the sludge accumulated on the side of multiple filter plates 4 close to the water inlet pipe 2 is scraped, so that the sludge is spread out in the box body 1, avoiding the problems of low utilization rate of the chamber space and blockage of the filter plates 4 caused by accumulation.

[0040] Please refer to Figure 3 、 Figure 6 、 Figure 7 Preferably, the guide rail 11 includes a smooth portion 111; both ends of the smooth portion 111 are respectively provided with a descending portion 113 and a lifting portion 114. Multiple concave portions 112 are provided between the descending portion 113 and the lifting portion 114. During actual use, the smooth portion 111 is a structure of a horizontal groove with semicircular grooves at both ends, and the descending portion 113 is provided above one end of the smooth portion 111 close to the water inlet pipe 2. On the contrary, the lifting portion 114 is provided above one end of the smooth portion 111 close to the water outlet pipe 3, and the descending portion 113 and the lifting portion 114 are arranged in an opposite structure. When the bottom plate 10 slides to the position of the descending portion 113, the bottom plate 10 moves downward under the action of the descending portion 113 into the semicircular structure of the smooth portion 111. When the bottom plate 10 moves to the position of the lifting portion 114, the bottom plate 10 will slide upward. The concave portion 112 is a relatively inverted isosceles trapezoid structure. For the specific structure, please refer to Figure 6As shown, the bottom width of the concave portion 112 is greater than the width of the filter plate 4. The number and positions of the concave portions 112 correspond one-to-one with the filter plate 4. Multiple groups of concave portions 112, descending portions 113, and lifting portions 114 are connected through horizontal grooves. In this way, the bottom plate 10 can automatically move up and down during the rotation with the conveyor belt 6 through the smooth portion 111, concave portion 112, descending portion 113, and lifting portion 114, making multiple groups of scraping plates 8 horizontal or parallel. That is, when the bottom plate 10 is within the smooth portion 111, the scraping plate 8 is at the position near the bottom of the inner wall of the conveyor belt 6. At this time, the bottom plate 10 moves away from the side wall of the conveyor belt 6 under the action of the smooth portion 111. This distance is the state where the scraping plate 8 rotates 90° under the cooperation of the positioning column 13 and the connecting column 9. That is, at this time, multiple groups of scraping plates 8 are in a parallel state. When the bottom plate 10 slides from the smooth portion 111 through the lifting portion 114, multiple groups of scraping plates 8 are in a relatively horizontal state. When the bottom plate 10 moves into the concave portion 112, the bottom plate 10 will first move downward. At this time, the connecting column 9 moves downward, and through the positioning column 13, the scraping plate 8 rotates 270°, reaching the state where multiple groups of scraping plates 8 are parallel. Subsequently, after the bottom plate 10 horizontally moves past a corresponding group of filter plates 4, the bottom plate 10 moves upward under the action of the concave portion 112, causing multiple groups of scraping plates 8 to move back to the horizontal state. This process repeats. When the scraping plate 8 is about to approach the filter plate 4, it will automatically rotate to a relatively parallel state, and then rotate to a relatively horizontal state after passing through the notch 14 to achieve the effect of scraping the sludge.

[0041] An avoidance opening is provided on the periphery of the rotating shaft 7. Multiple groups of the avoidance openings are arranged in an annular array along the center of the rotating shaft 7. When the bottom plate 10 moves to the position of the rotating shaft 7, the bottom plate 10 will continue to move under the action of the avoidance opening, avoiding the problem of conflict between the bottom plate 10 and the rotating shaft 7.

[0042] Please refer to Figures 1-2 、 Figures 8-10, preferably, the dredging component 5 includes two sets of movable plates 51; the two sets of movable plates 51 are respectively arranged on both sides of the filter plate 4 and are elastically slidably connected to the side wall of the box body 1. A middle plate 54 is elastically slidably connected between the two sets of movable plates 51. A push plate 53 is arranged on the side of the middle plate 54 close to the filter plate 4. A push rod is arranged on the side of the push plate 53 close to the filter plate 4. A transmission component is arranged on the side of the movable plate 51 close to the notch 14. One end of the transmission component away from the movable plate 51 extends into the notch 14. During actual use, a through hole is arranged at the center of the movable plate 51. The middle plate 54 is a square structure slidably adapted to the through hole. The number and size of the push rods arranged on the push plate 53 are adapted to the filter holes of the corresponding filter plate 4, and the push rods are made of a flexible material that can undergo a certain amount of elastic deformation. In the initial state, the movable plate 51 is away from the filter plate 4, the push rod is separated from the filter plate 4, and one end of the transmission component extends into the end of the notch 14 close to the water outlet pipe 3. When the multiple sets of scraping plates 8 rotate to a relatively parallel state, at this time, the rotation of the conveyor belt 6 will drive the scraping plates 8 to pass through the notch 14. The transmission component is slidably arranged in the notch 14 on both sides of the filter plate 4, and the movable plate 51 is arranged on the side of the filter plate 4 close to the water outlet pipe 3. When the corresponding scraping plate 8 passes through, the scraping plate 8 pushes the transmission component to move in the direction of the water inlet pipe 2, thereby driving the movable plate 51 to move in the direction of the filter plate 4. Subsequently, the middle plate 54 and the push plate 53 are used to push the push rod towards the filter holes on the filter plate 4 to dredge the filter holes, thus avoiding the problem of blockage of the filter holes. After the scraping plate 8 passes through the notch 14, the scraping plate 8 is separated from the transmission component, and then the movable plate 51 moves back to its original position under the corresponding elastic action to wait for the next cooperation.

[0043] In order to enable the push rod to dredge the entire filter plate 4, preferably, the inner wall of the box body 1 is symmetrically provided with a reciprocating groove 55 along the center. The reciprocating groove 55 is arranged on the side of the filter plate 4 close to the water outlet pipe 3. One end of the middle plate 54 close to the box body 1 slides into the reciprocating groove 55. During actual use, when the movable plate 51 elastically moves back from being close to the filter plate 4 to being away from the filter plate 4, the middle plate 54 will move up a certain distance under the action of the reciprocating groove 55, thereby enabling the entire push plate 53 to move up a certain distance, so that the push rod corresponds to the upper and lower groups of filter holes to be dredged on the filter plate 4. During the process of the movable plate 51 moving back to its original position, since the push rod can undergo a certain amount of elastic deformation, it will not affect the upward inclined movement of the middle plate 54. When the push rod is separated from the filter plate 4, it automatically elastically returns to the horizontal state, thus avoiding the problem that setting a push plate 53 similar in size to the entire filter plate 4 is likely to affect the separation and filtration effect of the sludge.

[0044] Please refer to Figure 9Preferably, the reciprocating groove 55 includes a transverse groove 551; a connected inclined groove 552 is arranged at the top of one end of the transverse groove 551 close to the filter plate 4, a first clamping block 553 is arranged in one end of the transverse groove 551 close to the inclined groove 552, and a second clamping block 554 is arranged in one end of the inclined groove 552 away from the transverse groove 551, the first clamping block 553 and the second clamping block 554 are elastically connected to the inner wall of the box body 1, and a reset groove 555 is arranged between one end of the inclined groove 552 away from the transverse groove 551 and one end of the transverse groove 551 away from the filter plate 4.

[0045] In actual use, a group of transverse grooves 551 and inclined grooves 552 form the effect of lifting the center plate 54 once, and multiple groups of transverse grooves 551 and inclined grooves 552 are connected in sequence according to actual needs. The top of the corresponding reset groove 555 is always connected to the top of the uppermost inclined groove 552, and the bottom of the reset groove 555 is always connected to the end of the lowest transverse groove 551. The transverse groove 551 is a horizontal structure, the inclined groove 552 is a relatively inclined structure, and the reset groove 555 is a vertical structure. The side of the first clamping block 553 close to the filter plate 4 is provided with an inclined surface structure relatively flush with the inner wall of the inclined groove 552, and the end of the first clamping block 553 away from the filter plate 4 is arranged toward the inclined surface of the conveyor belt 6. In this way, when the center plate 54 slides toward the filter plate 4 in the transverse groove 551, the inclined surface setting will push the first clamping block 553 to move and shrink into the side wall of the box body 1, and then after the center plate 54 passes over the first clamping block 553, its elastic When the movable plate 51 moves toward the filter plate 4 again, the ejector rod 54 can clear the filter holes 552 and the filter 553 can be adjusted accordingly.

[0046] An auxiliary groove 556 is provided at the top end of the inclined groove 552. One end of the auxiliary groove 556 far from the inclined groove 552 communicates with the reset groove 555. In actual use, the opening on the side of the auxiliary groove 556 close to the reset groove 555 is approximately horn-shaped. In this way, when the middle plate 54 is blocked by the sludge below when sliding in the reset groove 555, it can be slidably matched with the corresponding auxiliary groove 556, and then enter a corresponding set of transverse grooves 551 for dredging work. It should also be noted that: the size of the opening on the side of the auxiliary groove 556 close to the reset groove 555 can be adjusted according to actual needs, and one end of the auxiliary groove 556 far from the reset groove 555 communicates with the top of the inclined groove 552 and the end of the next set of transverse grooves 551. And in order to prevent the end of the middle plate 54 that normally enters the next set of transverse grooves 551 through the inclined groove 552 from sliding into the reset groove 555, a blocking portion protruding upward is provided at the connection of the auxiliary groove 556 close to the inclined groove 552, thus preventing the middle plate 54 from sliding into the corresponding auxiliary groove 556 after passing over the inclined groove 552.

[0047] Please refer to Figure 10 , preferably, the transmission assembly includes an L-shaped rod 52; the L-shaped rod 52 is arranged on the side of the movable plate 51 close to the notch 14. One end of the L-shaped rod 52 far from the movable plate 51 is rotatably connected to an arc-shaped plate 56. One end of the L-shaped rod 52 far from the movable plate 51 is slidably adapted to the notch 14. In actual use, in the initial state, the end of the L-shaped rod 52 is inside the notch 14 on the side close to the movable plate 51, and the arc-shaped plate 56 is inside the notch 14, and the top of the L-shaped rod 52 is slidably attached to the inner wall top of the notch 14. When the scraper 8 moves into the notch 14, the end of the scraper 8 will be stuck to the side of the arc-shaped plate 56 close to the conveyor belt 6. Then, when the scraper 8 moves, it will push the arc-shaped plate 56 to drive the L-shaped rod 52 to move in the direction of the water inlet pipe 2, thereby causing the movable plate 51 to move towards the filter plate 4. When the arc-shaped plate 56 moves through the notch 14, under its arc-shaped structure, it will be pushed by the end of the scraper 8 to rotate upward, that is, it will no longer be stuck to the end of the scraper 8. When the scraper 8 completely passes through the notch 14, the movable plate 51 will elastically reset and drive the L-shaped rod 52 and the arc-shaped plate 56 to move back to their original positions.

Claims

1. A sludge recovery filter device, comprising a box; characterized in that: A water inlet pipe is arranged at one end of the box body, a water outlet pipe is arranged at one end of the box body away from the water inlet pipe, a filter plate is arranged in the box body, a conveyor belt is arranged at the bottom of the box body, the conveyor belt is arranged at the bottom of the filter plate, rotating shafts are arranged at both ends of the conveyor belt, and both ends of the rotating shaft are rotatably connected to the side wall of the box body, an auxiliary component is arranged on the conveyor belt, and a dredging component is arranged on the side of the filter plate close to the water outlet pipe. When the conveyor belt rotates, the conveyor belt drives the auxiliary component to rotate, and the auxiliary component causes the dredging component to move relative to the filter plate; The auxiliary component comprises a scraper; a connecting column is fixedly arranged at the bottom center of the scraper, and the scraper is arranged in a horizontal array in multiple groups, and a bottom plate is rotatably arranged at one end of the multiple groups of connecting columns away from the scraper, and the end of the connecting column away from the scraper passes through the side wall of the conveyor belt; A mounting portion is provided on the side wall of the conveyor belt, one end of the connecting column away from the scraper slides through the side wall of the mounting portion, the bottom plate is provided on the side of the mounting portion away from the scraper, a support rod is provided inside the side wall of the conveyor belt, both ends of the support rod protrude from the side wall of the conveyor belt, and the inner wall of the box body is provided with a slide groove that slides and fits with the support rod; The outer side wall of the connecting column is provided with a thread groove, the inner wall of the mounting portion is provided with a positioning column slidably matched with the thread groove, the side wall of the box body is provided with a guide rail slidably matched with the bottom plate, and the bottom side wall of the filter plate is provided with a notch corresponding to the connecting column.

2. A sludge recovery filtering device according to claim 1, characterized in that: The guide rail comprises a smooth portion; two ends of the smooth portion are respectively provided with a descending portion and a lifting portion, and a plurality of groups of recessed portions are provided between the descending portion and the lifting portion.

3. A sludge recovery filter device according to claim 1, characterized in that: The dredging component includes two groups of movable plates; the two groups of movable plates are respectively arranged on both sides of the filter plate and elastically slidably connected to the side walls of the box body, a middle plate is elastically slidably connected between the two groups of movable plates, a push plate is arranged on the side of the middle plate close to the filter plate, a push rod is arranged on the side of the push plate close to the filter plate, a transmission component is arranged on the side of the movable plate close to the notch, and the end of the transmission component away from the movable plate extends into the notch.

4. A sludge recovery filtering device according to claim 3, characterized in that: The inner wall of the box body is symmetrically provided with reciprocating grooves along the center. The reciprocating grooves are arranged on one side of the filter plate close to the water outlet pipe. One end of the middle plate close to the box body slides into the reciprocating groove.

5. A sludge recovery filtering device according to claim 4, characterized in that: The reciprocating groove includes a transverse groove; a connected inclined groove is arranged on the top of one end of the transverse groove close to the filter plate, a first clamping block is arranged in one end of the transverse groove close to the inclined groove, and a second clamping block is arranged in one end of the inclined groove away from the transverse groove, the first clamping block and the second clamping block are elastically connected to the inner wall of the box body, a reset groove is arranged between one end of the inclined groove away from the transverse groove and one end of the transverse groove away from the filter plate, an auxiliary groove is arranged on the top of the inclined groove, and one end of the auxiliary groove away from the inclined groove is connected to the reset groove.

6. The sludge recovery filtering device according to claim 3, characterized in that: The transmission assembly includes an L rod; the L rod is arranged on a side of the movable plate close to the notch, the end of the L rod away from the movable plate is rotatably connected to the arc plate, and the end of the L rod away from the movable plate is slidably adapted to the notch.

7. A method for sludge filtration using the sludge recovery filtration device as claimed in any one of claims 1 to 6, characterized in that: The steps include: S1, introduce sewage into the box through the water inlet pipe; S2, start the rotating shaft to rotate, then the rotating shaft drives the conveyor belt and auxiliary components to rotate, and scrape the sludge; S3, the auxiliary component rotates to cause the dredging component to move relative to the filter plate; S4. Complete the sludge filtering work and close the shaft.

Images