Recycled sludge filtering device and filtering method

Abstract

The invention discloses a recycled sludge filtering device and a filtering method, and belongs to the technical field of sludge recycling. A water inlet pipe is arranged at one end of the box, a water outlet pipe is arranged at the end, away from the water inlet pipe, of the box, a filter plate is arranged in the box, a conveying belt is arranged at the bottom in the box and arranged at the bottom of the filter plate, rotating shafts are arranged at the two ends in the conveying belt, and the two ends of each rotating shaft are rotationally connected with the side wall of the box. During use, the motor is started to drive the rotating shaft to rotate, and then the conveying belt rotates, so that slope-shaped sludge accumulated on the side, close to the water inlet pipe, of the filter plate is conveyed in the direction of the water inlet pipe, and the situation that the sludge is accumulated on one side of the filter plate in a slope shape is avoided; the problems that the space of the cavity separated by the filter plate is not fully utilized and the filter plate is blocked along with the accumulation of the sludge are solved.

Description

Technical Field

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

[0002] Sludge recovery is necessary in many situations such as environmental protection, resource utilization, volume reduction and cost control, and compliance requirements, especially in the process of sewage treatment and resource utilization. The sludge recovery filter is a key equipment for separating and treating sludge in the sewage treatment process. It aims to reduce the sludge volume, increase 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 a water treatment sludge utilization process, including a separation filter box, a filter assembly and a scraper mechanism. A plurality of filter assemblies distributed at equal intervals are arranged inside the separation filter box, and a scraper mechanism is arranged in front of each filter assembly, and the scraper mechanism is arranged across two support frames; the filter assembly includes a frame and a filter plate rotatably arranged in a center hole of the frame, and a driving mechanism for driving the filter plate to rotate; the scraper mechanism includes a rubber scraper and a U-shaped frame, and the rubber scraper is fixed on the bottom horizontal 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 screens are arranged in the separation filter box to filter and recover the sludge. In actual use, when water flows through the filter screen, the existence of the filter screen changes the water flow path, causing the local flow rate to decrease, and the filter screen blocks large particles of suspended matter and sludge. At this time, the sludge and other suspended matter in the water will gradually settle to one side of the filter screen. With the continuous deposition of sludge and the flow of water, the sludge on one side of the filter screen will accumulate in a slope shape, which will cause the filter screen to be covered with sludge, resulting in a reduction in its effective filtration area, a slow filtration speed, and even 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 object 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 technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sludge recovery filter device comprises 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 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 the two ends of the rotating shaft 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 filter plate close to the outlet pipe. When the conveyor belt rotates, the conveyor belt drives the auxiliary component to rotate, and the auxiliary component is used to prompt the dredging component to move relative to the filter plate.

[0008] As a further solution of the present invention: the auxiliary component includes 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.

[0009] As a further solution of the present invention: a mounting portion is provided on the side wall of the conveyor belt, the end of the connecting column away from the scraper slides through the side wall of the mounting portion, the bottom plate is arranged on the side of the mounting portion away from the scraper, a support rod is provided in 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 in fit with the support rod.

[0010] As a further solution of the present invention: the outer side wall of the connecting column is provided with a threaded groove, the inner wall of the mounting portion is provided with a positioning column slidably adapted to the threaded groove, the side wall of the box body is provided with a guide rail slidably adapted to the bottom plate, and the bottom side wall of the filter plate is provided with a notch corresponding to the connecting column.

[0011] As a further solution of the present invention: the guide rail includes 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.

[0012] As a further solution of the present invention: 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 are 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 an end of the transmission component away from the movable plate extends into the notch.

[0013] As a further solution of the present invention: the inner wall of the box body is symmetrically provided with reciprocating grooves along the center, the reciprocating grooves are 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 slides into the reciprocating groove.

[0014] As a further solution of the present invention: the reciprocating groove includes a transverse groove; a connected inclined groove is arranged at the top of one end of the transverse groove close to the filter plate, a first clamping block is arranged in the end of the transverse groove close to the inclined groove, and a second clamping block is arranged in the 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 the end of the inclined groove away from the transverse groove and the end of the transverse groove away from the filter plate, an auxiliary groove is arranged at the top of the inclined groove, and the end of the auxiliary groove away from the inclined groove is connected to the reset groove.

[0015] As a further solution of the present invention: 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 an arc plate, and the end of the L rod away from the movable plate is slidably adapted to the notch.

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

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the motor is started to drive the rotating shaft to rotate, and then the conveyor belt is rotated, so that the sludge accumulated on the side of the filter plate close to the water inlet pipe in a slope shape is transported in the direction of the water inlet pipe, thereby avoiding the sludge from accumulating in a slope shape on one side of the filter plate, resulting in the chamber space separated by the filter plate not being fully utilized, and the filter plate being blocked due to the accumulation of sludge. The contact area with the sludge is increased by auxiliary components, thereby effectively transporting the sludge in the direction of the water inlet pipe, avoiding the problem that the friction between the conveyor belt and the sludge is small, resulting in the inability to drive the sludge to move in the direction of the water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the middle section of the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle.

[0021] Figure 4 It is a schematic diagram of the structure of the auxiliary components in the present invention.

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at C in the middle.

[0023] Figure 6 For the present invention Figure 2 Schematic diagram of the structure at B in the figure.

[0024] Figure 7 It is a structural schematic diagram of the guide rail in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the notch in the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the reciprocating groove in the present invention.

[0027] Fig.10 It is a structural schematic diagram of the transmission component in the present invention.

[0028] 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 rod; 53. push plate; 54. middle plate; 55. reciprocating groove; 551. transverse groove; 552. inclined groove; 553. first clamping block; 554. second clamping block; 555. reset groove; 556. auxiliary groove; 56. arc plate; 6. conveyor belt; 7. rotating shaft; 8. scraper; 9. connecting column; 10. bottom plate; 11. guide rail; 111. smooth part; 112. recessed part; 113. descending part; 114. lifting part; 12. installation part; 13. positioning column; 14. notch. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 10 In an embodiment of the present invention, a sludge recovery filtering device and filtering method include a box body 1, one end of the box body 1 is provided with an inlet pipe 2, the end of the box body 1 away from the inlet pipe 2 is provided with an outlet pipe 3, a filter plate 4 is provided in the box body 1, a conveyor belt 6 is provided at the bottom of the box body 1, the conveyor belt 6 is provided at the bottom of the filter plate 4, and rotating shafts 7 are provided at both ends of the conveyor belt 6, and the two ends of the rotating shaft 7 are rotatably connected to the side wall of the box body 1, an auxiliary component is provided on the conveyor belt 6, and a dredging component 5 is provided on the side of the filter plate 4 close to the 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.

[0030] Preferably, in this embodiment, the filter plate 4 is fixedly installed in the box body 1 by means of a snap-fitting method or a bolt, so as to facilitate the installation and disassembly of the filter plate 4. A plurality of groups of filter plates 4 are evenly arrayed in the box body 1, and the box body 1 is evenly divided into a plurality of chambers for filtering sewage, and the plurality of groups of filter plates 4 are arranged in increasing density from the water inlet pipe 2 to the water outlet pipe 3, so as to achieve the effect of multi-stage filtration of the sewage entering the box body 1, thereby realizing the filtering and recovery of the sludge, and a motor for driving the rotating shaft 7 to rotate is arranged on the periphery of the box body 1.

[0031] When in use, sewage is introduced into the box body 1 through the water inlet pipe 2, and the sewage entering the box body 1 will flow in the box body 1 toward the water outlet pipe 3, and under the action of the filter plate 4, the sludge in the sewage will be filtered and separated, and the sewage after the sludge is filtered will be 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 to the water inlet pipe 2, that is, the rotating shaft 7 rotates counterclockwise, and then the conveyor belt 6 is rotated from the water outlet pipe 3 to the water inlet pipe 2, that is, the conveyor belt 6 rotates counterclockwise. The rotating conveyor belt 6 will transport the sludge accumulated on the side of the filter plate 4 close to the water inlet pipe 2 in a sloped shape to the direction of the water inlet pipe 2, so as to avoid the sludge from accumulating in the form of a slope on the filter plate 4. One side of the filter plate 4, resulting in the chamber space separated by the filter plate 4 not being fully utilized, and the filter plate 4 being blocked as the sludge accumulates. The accumulated sludge can be fully utilized by rotating the conveyor belt 6 to fully utilize the chamber separated by multiple groups of filter plates 4 in the box body 1, and the problem of sludge accumulation in a slope shape on one side of the filter plate 4 can be avoided. In addition, the rotation of the conveyor belt 6 will drive the auxiliary components to rotate, and the auxiliary components are 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 components, thereby effectively conveying the sludge in the direction of the water inlet pipe 2, avoiding the problem that the friction between the conveyor belt 6 and the sludge is small, resulting in the inability to drive the sludge to move in the direction of the water inlet pipe 2.

[0032] See also Figure 1-Figure 7Preferably, the auxiliary component includes a scraper 8; a connecting column 9 is fixedly provided at the bottom center of the scraper 8, and the scraper 8 is arranged in a horizontal array in a plurality of groups along the width direction of the box body 1, and a bottom plate 10 is rotatably provided at one end of the plurality of connecting columns 9 away from the scraper 8, and the bottom plate 10 is arranged in the conveyor belt 6, and the end of the connecting column 9 away from the scraper 8 passes through the side wall of the conveyor belt 6. In 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 set the conveyor belt 6 close to the side of the filter plate 4, the scraper 8 protrudes from the top of the conveyor belt 6, so the scraper 8 will scrape the bottom part of the sludge accumulated on one side of the filter screen toward the direction of 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 be spread out in the box body 1, thereby promoting the filtering efficiency of the filter plate 4.

[0033] Preferably, a mounting portion 12 is provided on the side wall of the conveyor belt 6, and the end of the connecting column 9 away from the scraper 8 slides through the side wall of the mounting portion 12, and the bottom plate 10 is arranged on the side of the mounting portion 12 away from the scraper 8. The mounting portion 12 can be made of a hard material, which facilitates the installation of the connecting column 9, and the width of the mounting portion 12 is very narrow, so as not to affect the overall rotation and conveying effect of the conveyor belt 6.

[0034] In order to improve the overall stability of the conveyor belt 6 and prevent the conveyor belt 6 from sinking and affecting the rotation effect, a support rod is arranged inside the side wall of the conveyor belt 6, and both ends of the support rod protrude from the side wall of the conveyor belt 6. The inner wall of the box body 1 is provided with a slide groove that slides with the support rod. In actual use, a plurality of groups of support rods are evenly arrayed inside the conveyor belt 6 along the shape of the conveyor belt 6.

[0035] Further, preferably, the outer side wall of the connecting column 9 is provided with a threaded groove, the inner wall of the mounting portion 12 is provided with a positioning column 13 slidably adapted to the threaded groove, the side wall of the box body 1 is provided with a guide rail 11 slidably adapted to the bottom plate 10, and the bottom side wall of the filter plate 4 is provided with a notch 14 corresponding to the connecting column 9. In actual use, the number and position of the notches 14 are set one-to-one with the number and position of the connecting column 9, and the width of the notch 14 is slightly larger than the width of the scraper 8, that is, the notch 14 allows the scraper 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 scraper 8 is in the initial state where the conveyor belt 6 is close to the filter plate 4, and the scraper 8 is located near the water outlet pipe 3, the multiple groups of scrapers 8 are in a relatively horizontal state, and the bottom plate 10 is close to the mounting portion 12 under the action of the guide rail 11. At this time, the rotation of the conveyor belt 6 drives the scraper 8 to rotate to pile The accumulated sludge is scraped, and when the bottom plate 10 rotates to a position close to the dredging component 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, and then the connecting column 9 rotates 270° through the cooperation of the positioning column 13 and the threaded groove, that is, the multiple groups of scrapers 8 are parallel to each other, and then the conveyor belt 6 rotates so that the scraper 8 can pass through the notch 14 through a group of filter plates 4 close to the outlet pipe 3, and then the bottom plate 10 moves upward under the action of the guide rail 11 close to the mounting portion 12, so that the scraper 8 rotates to achieve a horizontal state again, thereby scraping the sludge on one side of a group of filter plates 4 close to the outlet pipe 3 again, and so on and so forth, so as to scrape the sludge accumulated on the side of the multiple groups of filter plates 4 close to the water inlet pipe 2, so that the sludge is spread out in the box body 1, avoiding the problem of low chamber space utilization and clogging of the filter plates 4 caused by accumulation.

[0036] See also Figure 3 , Figure 6 , Figure 7 Preferably, the guide rail 11 includes a smooth portion 111; a descending portion 113 and a lifting portion 114 are respectively provided at both ends of the smooth portion 111, and a plurality of recesses 112 are provided between the descending portion 113 and the lifting portion 114. In actual use, the smooth portion 111 is a structure of a horizontal groove and semicircular grooves at both ends, and the descending portion 113 is arranged above one end of the smooth portion 111 close to the water inlet pipe 2, and the lifting portion 114 is arranged 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 opposite structures. When the bottom plate 10 slides to the position of the descending portion 113, the bottom plate 10 moves downward to the semicircular structure of the smooth portion 111 under the action of the descending portion 113, and when the bottom plate 10 moves to the lifting portion 114, the bottom plate 10 will slide downward, and the recess 112 is a relatively inverted isosceles trapezoidal structure. For specific structure, refer to Figure 6As shown, the bottom width of the recess 112 is greater than the width of the filter plate 4, the number and position of the recess 112 are arranged one-to-one with the filter plate 4, and the multiple groups of recesses 112, descending parts 113, and lifting parts 114 are connected through horizontal grooves, so that the bottom plate 10 can automatically move up and down during the rotation of the conveyor belt 6 through the smooth part 111, the recess 112, the descending part 113, and the lifting part 114, so that the multiple groups of scrapers 8 are horizontal or parallel, that is, when the bottom plate 10 is in the smooth part 111, the scraper 8 is at a position close to the bottom of the inner wall of the conveyor belt 6. At this time, the bottom plate 10 is away from the side wall of the conveyor belt 6 under the action of the smooth part 111. This distance is the state where the scraper 8 rotates 90° under the cooperation of the positioning column 13 and the connecting column 9, that is, At this time, the multiple groups of scrapers 8 are in a parallel state, and when the bottom plate 10 and the smooth portion 111 slide through the lifting portion 114, the multiple groups of scrapers 8 are in a relatively horizontal state, and when the bottom plate 10 moves into the recess 112, the bottom plate 10 will first move downward. At this time, the connecting column 9 moves downward through the positioning column 13 to rotate the scraper 8 270°, so that the multiple groups of scrapers 8 are in a parallel state. Then, the bottom plate 10 keeps moving horizontally and passes over the corresponding group of filter plates 4. The bottom plate 10 moves upward under the action of the recess 112, so that the multiple groups of scrapers 8 move and reset to a horizontal state. This reciprocating process occurs. When the scraper 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.

[0037] The periphery of the rotating shaft 7 is provided with avoidance openings, and a plurality of avoidance openings are provided in a circular 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 openings, thereby avoiding the problem of conflict between the bottom plate 10 and the rotating shaft 7.

[0038] See also Figure 1-Figure 2 , Figure 8-Figure 10Preferably, the dredging component 5 includes two groups of movable plates 51; the two groups of movable plates 51 are respectively arranged on both sides of the filter plate 4 and are elastically slidably connected to the side walls of the box body 1, and a middle plate 54 is elastically slidably connected between the two groups of movable plates 51, and a push plate 53 is arranged on the side of the middle plate 54 close to the filter plate 4, and a push rod is arranged on the side of the push plate 53 close to the filter plate 4, and a transmission component is arranged on the side of the movable plate 51 close to the notch 14, and the end of the transmission component away from the movable plate 51 extends into the notch 14. In actual use, a through hole is arranged in the center of the movable plate 51, and the middle plate 54 is a square structure that is 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 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 assembly extends into the notch 14 near the end of the water outlet pipe 3. When the multiple groups of scrapers 8 rotate to a relatively parallel state, the rotation of the conveyor belt 6 will drive the scrapers 8 to pass through the notch 14, and the transmission assembly is in a group of notches 14. When the corresponding scraper 8 passes through, the scraper 8 pushes the transmission assembly 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, and then the push rod is pushed to move toward the filter hole on the filter plate 4 through the middle plate 54 and the push plate 53 to dredge the filter hole, thereby avoiding the problem of the filter hole being blocked. After the scraper 8 passes through the notch 14, the scraper 8 is separated from the transmission assembly, and then the movable plate 51 moves and resets under the corresponding elastic action, so as to wait for the next cooperation.

[0039] In order to enable the push rod to clear the filter plate 4 as a whole, preferably, a reciprocating groove 55 is symmetrically arranged on the inner wall of the box body 1 along the center, and the reciprocating groove 55 is arranged on the side of the filter plate 4 close to the water outlet pipe 3, and the end of the middle plate 54 close to the box body 1 slides into the reciprocating groove 55. In actual use, when the movable plate 51 elastically moves and resets from close to the filter plate 4 to away from the filter plate 4, the middle plate 54 will move upward by a certain distance under the action of the reciprocating groove 55, thereby causing the push plate 53 to move upward by a certain distance as a whole, so that the push rod corresponds to the upper and lower groups of filter holes to be cleared in the filter plate 4. During the movement and reset process of the movable plate 51, since the push rod can undergo a certain elastic deformation, it will not affect the upward tilting movement of the middle plate 54. After the push rod is separated from the filter plate 4, it automatically elastically resets to a horizontal state, thus avoiding the problem of setting a push plate 53 of similar overall size to the filter plate 4, which is easy to affect the separation and filtering effect of the sludge.

[0040] See also Fig. 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.

[0041] 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.

[0042] The top of the inclined groove 552 is provided with an auxiliary groove 556, and the end of the auxiliary groove 556 away from the inclined groove 552 is connected to the reset groove 555. In actual use, the opening of the auxiliary groove 556 near the reset groove 555 is approximately trumpet-shaped, so that when the middle plate 54 is blocked by the mud below when sliding in the reset groove 555, it can slide with the corresponding auxiliary groove 556 and then enter the corresponding group of transverse grooves 551 for dredging. It should also be noted that: the auxiliary groove 556 near the reset groove 55 The size of the opening on one side of 5 can be adjusted according to actual needs, and one end of the auxiliary groove 556 away from the reset groove 555 is connected with the top of the inclined groove 552 and the end of the next group of transverse grooves 551, and in order to prevent the end of the middle plate 54 that normally passes through the inclined groove 552 and enters the next group of transverse grooves 551 from sliding into the reset groove 555, an upwardly protruding blocking portion is provided at the auxiliary groove 556 near the connection with the inclined groove 552, thereby preventing the middle plate 54 from sliding into the corresponding auxiliary groove 556 after passing over the inclined groove 552.

[0043] See also Fig.10 Preferably, the transmission assembly includes an L-rod 52; the L-rod 52 is arranged on a side of the movable plate 51 close to the notch 14, and the end of the L-rod 52 away from the movable plate 51 is rotatably connected to the arc plate 56, and the end of the L-rod 52 away from the movable plate 51 is slidably adapted to the notch 14. In actual use, in the initial state, the end of the L-rod 52 is located in the notch 14 on the side close to the movable plate 51, and the arc plate 56 is located in the notch 14, and the top of the L-rod 52 is slidably fitted with the top of the inner wall of the notch 14. When the scraper 8 moves to the notch 1 4, the end of the scraper 8 will be stuck with the side of the curved plate 56 close to the conveyor belt 6, and then the scraper 8 moves to push the curved plate 56 to drive the L rod 52 to move in the direction of the water inlet pipe 2, thereby making the movable plate 51 move toward the filter plate 4. When the curved plate 56 moves through the notch 14, it will be pushed by the end of the scraper 8 to rotate upward under its curved structure, that is, it will no longer be stuck with the end of the scraper 8. When the scraper 8 completely passes through the notch 14, the movable plate 51 is elastically reset to drive the L rod 52 and the curved plate 56 to move and reset.

Claims

1. A sludge recovery filter device, comprising a box; characterized in that: 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 in the box body, a conveyor belt is provided at the bottom of the box body, the conveyor belt is provided at the bottom of the filter plate, rotating shafts are provided at both ends of the conveyor belt, and both ends of the rotating shaft 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 is used to prompt the dredging component to move relative to the filter plate.

2. A sludge recovery filtering device according to claim 1, characterized in that: The auxiliary component includes a scraper; a connecting column is fixedly arranged at the bottom center of the scraper, and the scraper is arranged in multiple groups in a horizontal array. The multiple groups of connecting columns are rotatably arranged with a bottom plate at one end away from the scraper, and the end of the connecting column away from the scraper passes through the side wall of the conveyor belt.

3. A sludge recovery filtering device according to claim 2, characterized in that: A mounting portion is provided on the side wall of the conveyor belt, and one end of the connecting column away from the scraper slides through the side wall of the mounting portion, and 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, and both ends of the support rod protrude from the side wall of the conveyor belt. The inner wall of the box body is provided with a sliding groove that slides in contact with the support rod.

4. A sludge recovery filtering device according to claim 3, characterized in that: 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.

5. A sludge recovery filtering device according to claim 4, 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.

6. A sludge recovery filter device according to claim 4, 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.

7. A sludge recovery filter device according to claim 6, 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.

8. The sludge recovery filtering device according to claim 7, 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.

9. The sludge recovery filtering device according to claim 6, 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.

10. A method for sludge filtering using the sludge recovery filtering device as claimed in any one of claims 1 to 9, 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.

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