Sludge reutilization system and sludge utilization method

Abstract

The invention relates to the technical field of sludge treatment, in particular to a sludge recycling system which comprises a bottom plate, four supporting legs are fixedly connected to the top surface of the bottom plate, the top ends of the four supporting legs are fixedly connected with the same dewatering box, and a lower filter plate is fixedly connected between the inner walls of the middle of the dewatering box. The inner wall of the dewatering box is further slidably connected with an upper filtering plate, the upper filtering plate is located above the lower filtering plate, the back face of the dewatering box is slidably provided with a U-shaped plate and an L-shaped plate, the outer side of the U-shaped plate is integrally connected with a first rack, and the outer side of the L-shaped plate is integrally connected with a second rack; the end, extending into the dewatering box, of the U-shaped plate is fixedly connected with a movable plate, and the top face of the movable plate is fixedly connected with a plurality of dredging rods. According to the sludge recycling system and the sludge recycling method, after sludge in the dewatering box is subjected to filter pressing and dewatering, the through rods penetrate through the filter holes of the lower filter plate and the upper filter plate, and the interiors of the filter holes are cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a sludge recycling system and a sludge utilization method. Background Art

[0002] Sludge reuse refers to the process of processing the sludge generated during sewage treatment and converting it into valuable resources or energy. Dehydration before sludge reuse is a key link that can directly affect the subsequent utilization effect and cost of sludge. The main purpose of sludge dehydration is to reduce the volume and weight of sludge and reduce its moisture content for easy transportation, storage and subsequent utilization.

[0003] The methods of sludge dewatering are mainly divided into two categories: natural drying method and mechanical dewatering method. Among them, mechanical dewatering method is the most commonly used method, which has the advantages of high dewatering efficiency, small footprint, and high degree of automation. That is, the water in the sludge is squeezed out by pressure. However, due to the presence of some solid debris in the sludge, in the mechanical dewatering method, debris is easy to accumulate in the filter holes of the filter plate, and the accumulated debris cannot be removed in time, which will cause the diameter of the filter hole to continue to decrease until it is blocked, affecting the sludge dewatering work.

[0004] In order to solve the above problems, we have made improvements and proposed a sludge recycling system and a sludge utilization method. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a sludge recycling system, comprising a bottom plate, the top surface of the bottom plate is fixedly connected with four supporting legs, the top ends of the four supporting legs are fixedly connected with the same dewatering box, a lower filter plate is fixedly connected between the middle inner walls of the dewatering box, the inner wall of the dewatering box is also slidably connected with an upper filter plate, the upper filter plate is located above the lower filter plate, a U-shaped plate and an L-shaped plate are slidably installed on the back of the dewatering box, the outer side of the U-shaped plate is integrally connected with a first rack, the outer side of the L-shaped plate is integrally connected with a second rack, one end of the U-shaped plate extending to the inside of the dewatering box is fixedly connected with a movable plate, a plurality of dredging rods are fixedly connected to the top surface of the movable plate, a connecting rod is fixedly connected to the top of the L-shaped plate, and a pressing plate is fixedly connected to the bottom end of the connecting rod;

[0007] A lifting mechanism is installed on the top surface of the bottom plate, and the lifting mechanism includes two fixed plates fixedly connected to the top surface of the bottom plate, a bidirectional threaded rod is rotatably connected between the two fixed plates, two moving blocks are symmetrically threaded on the outer wall of the bidirectional threaded rod, the top surfaces of the two moving blocks are hinged with connecting rods, and the top ends of the two connecting rods are hinged with the same lifting rod, the lifting rod sequentially penetrates the top end of the U-shaped plate, the movable plate and the lower filter plate and is fixedly connected to the bottom surface of the upper filter plate, and one end of the bidirectional threaded rod extending to the outside of the fixed plate is coaxially fixedly connected to the first driven pulley;

[0008] A driving mechanism is installed on the top surface of the bottom plate, and the driving mechanism includes two adapter plates fixedly connected to the top surface of the bottom plate, a driving shaft and a driven shaft are rotatably connected between the two adapter plates, a first gear and a second gear are coaxially rotatably connected on the outer wall of the driving shaft, the first gear is meshed with the first rack, the second gear is meshed with the second rack, the driven shaft extends to one end outside the adapter plate and is coaxially fixedly connected to the first driving pulley, and the first driving pulley and the first driven pulley are transmitted through a transmission belt;

[0009] The second gear is connected with the gear train of the driven gear and the gear is connected with the gear of the driven gear through the outer wall of the driven gear, and the gear train is connected with the gear of the driven gear through the outer wall of the driven gear.

[0010] As a preferred technical solution of the present invention, a first guide rail and a second guide rail are fixedly connected to the back of the dehydration box, the first guide rail is slidably connected to the U-shaped plate, and the second guide rail is slidably connected to the L-shaped plate.

[0011] As a preferred technical solution of the present invention, a plurality of filter holes are provided on the lower filter plate and the upper filter plate, the filter holes on the lower filter plate have the same diameter as the filter holes on the upper filter plate, and the dredging rod can pass through the filter holes of the lower filter plate and the upper filter plate.

[0012] As a preferred technical solution of the present invention, the top surface of the dehydration box is fixedly connected with a door-type support plate, and two limiting telescopic rods are fixedly installed on the inner top surface of the door-type support plate. The movable ends of the limiting telescopic rods are fixedly connected to the top surface of the pressure plate, and the side surfaces of the pressure plate can be sealed and slidably connected to the inner wall of the dehydration box.

[0013] As a preferred technical solution of the present invention, a reduction motor is fixedly mounted on the side of one of the adapter plates, and the output shaft of the reduction motor is coaxially fixedly connected to the driving shaft.

[0014] As a preferred technical solution of the present invention, a limit strip is fixedly connected to the outer wall of the active rotating shaft, and the limit strip is slidably connected to the active rotating shaft sleeve, the second active pulley and the first friction disk.

[0015] As a preferred technical solution of the present invention, an adjustment plate is provided between the active rotating shaft sleeve and the driven rotating shaft sleeve, the active rotating shaft sleeve and the driven rotating shaft sleeve are both rotatably connected to the adjustment plate, the side of the adjustment plate is rotatably connected to an adjustment threaded rod, the adjustment threaded rod is threadedly connected to one of the adapter plates, and one end of the adjustment threaded rod extends to the adapter plate and is coaxially fixedly connected to a handwheel.

[0016] A sludge utilization method comprises the following steps:

[0017] S1: The sludge to be dehydrated is placed inside the dehydration tank, and then chemical agents are added to change the physical and chemical properties of the sludge;

[0018] S2: The adjusting threaded rod is rotated by a hand wheel to drive the adjusting plate to move, so that the first friction plate is further brought into contact with the second friction plate, and then the reduction motor is started, the reduction motor drives the active shaft to rotate, and the active shaft drives the first gear and the second gear to rotate synchronously through the first friction plate and the second friction plate, the first gear drives the L-shaped plate to move downward through the first rack, the L-shaped plate drives the movable plate to move downward, the second gear drives the L-shaped plate to move downward through the second rack, and the L-shaped plate drives the pressing plate to press down through the connecting rod, so as to filter and dehydrate the sludge inside the dehydration box;

[0019] S3: After the sludge filtration is completed, the reduction motor drives the active shaft to rotate in the opposite direction, and the active shaft drives the first gear and the second gear to rotate synchronously through the first friction plate and the second friction plate. The first gear drives the L-shaped plate to move up through the first rack, and the L-shaped plate drives the movable plate to move up, thereby driving the dredging rod to pass through the filter holes of the lower filter plate and the upper filter plate to clean the inside of the filter hole. The second gear drives the L-shaped plate to move up through the second rack, and the L-shaped plate drives the pressure plate to move up through the connecting rod;

[0020] S4: The adjusting threaded rod is rotated by the hand wheel to drive the adjusting plate to move, so that the third friction disc is further brought into contact with the fourth friction disc, and the active shaft drives the second active pulley, the second driven pulley and the transmission belt to drive the third friction disc to rotate, and the third friction disc drives the driven shaft to rotate through the fourth friction disc, and the driven shaft drives the bidirectional threaded rod to rotate through the first active pulley and the first driven pulley, and the bidirectional threaded rod drives the two moving blocks to approach, and drives the lifting rod to move upward through the connecting rod, and the lifting rod drives the upper filter plate to move upward, and lifts the sludge that has been filtered on the upper filter plate to facilitate the unloading of the sludge.

[0021] The beneficial effects of the present invention are:

[0022] 1. This sludge recycling system and sludge utilization method, by rotating the adjusting threaded rod through a hand wheel, drives the adjusting plate to move, further makes the first friction disc contact with the second friction disc, then starts the reduction motor, the reduction motor drives the active shaft to rotate, the active shaft drives the first gear and the second gear to rotate synchronously through the first friction disc and the second friction disc, the first gear drives the U-shaped plate to move downward through the first rack, the U-shaped plate drives the movable plate to move downward, the second gear drives the L-shaped plate to move downward through the second rack, the L-shaped plate drives the pressing plate to press down through the connecting rod, and the sludge inside the dewatering box is filtered and dehydrated.

[0023] 2. This sludge recycling system and sludge utilization method: the reduction motor drives the active shaft to rotate in the opposite direction, and the active shaft drives the first gear and the second gear to rotate synchronously through the first friction plate and the second friction plate. The first gear drives the C-shaped plate to move up through the first rack, and the C-shaped plate drives the movable plate to move up, thereby driving the dredging rod to pass through the filter holes of the lower filter plate and the upper filter plate to clean the inside of the filter holes.

[0024] 3. This sludge recycling system and sludge utilization method, by rotating the adjusting threaded rod through a hand wheel, drives the adjusting plate to move, further makes the third friction disc contact with the fourth friction disc, the active shaft drives the second active pulley, the second driven pulley and the transmission belt to drive the third friction disc to rotate, the third friction disc drives the driven shaft to rotate through the fourth friction disc, the driven shaft drives the two-way threaded rod to rotate through the first active pulley and the first driven pulley, the two-way threaded rod drives the two moving blocks to approach, drives the lifting rod to move up through the connecting rod, the lifting rod drives the upper filter plate to move up, lifts the sludge that has been filtered on the upper filter plate, and facilitates the sludge unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1It is a three-dimensional schematic diagram of a sludge recycling system and a sludge utilization method of the present invention;

[0027] Figure 2 It is a front view schematic diagram of a sludge recycling system and a sludge utilization method of the present invention;

[0028] Figure 3 It is a side view schematic diagram of a sludge recycling system and a sludge utilization method of the present invention;

[0029] Figure 4 It is a top view schematic diagram of a sludge recycling system and a sludge utilization method of the present invention;

[0030] Figure 5 The present invention is a sludge recycling system and a sludge utilization method Figure 4 Schematic cross-sectional view at AA in the middle;

[0031] Figure 6 The present invention is a sludge recycling system and a sludge utilization method Figure 4 A partial cross-sectional view of the middle BB;

[0032] Figure 7 The present invention is a sludge recycling system and a sludge utilization method Figure 1 The enlarged schematic diagram of point A in the middle;

[0033] In the figure: 1, bottom plate; 2, supporting legs; 3, dehydration box; 4, lower filter plate; 5, upper filter plate; 6, U-shaped plate; 7, L-shaped plate; 8, movable plate; 9, dredging rod; 10, first guide rail; 11, second guide rail; 12, connecting rod; 13, pressing plate; 14, door support plate; 15, limited telescopic rod; 16, fixed plate; 17, two-way threaded rod; 18, moving block; 19, connecting rod; 20, lifting rod; 21, first rack; 22, second rack; 23, first driven belt Wheel; 24, adapter plate; 25, active shaft; 26, driven shaft; 27, first gear; 28, second gear; 29, handwheel; 30, first active pulley; 31, reduction motor; 32, active shaft sleeve; 33, driven shaft sleeve; 34, second active pulley; 35, first friction disc; 36, second friction disc; 37, limit strip; 38, second driven pulley; 39, third friction disc; 40, fourth friction disc; 41, adjustment plate; 42, adjustment threaded rod. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 3 , Figure 4 and Figure 5 , a sludge recycling system includes a bottom plate 1. Four support legs 2 are fixedly connected to the top surface of the bottom plate 1. The top ends of the four support legs 2 are fixedly connected to the same dehydration tank 3. A lower filter plate 4 is fixedly connected between the middle inner walls of the dehydration tank 3. An upper filter plate 5 is also slidably connected to the inner wall of the dehydration tank 3. The upper filter plate 5 is located above the lower filter plate 4. A U-shaped plate 6 and an L-shaped plate 7 are slidably installed on the back surface of the dehydration tank 3. A first rack 21 is integrally connected to the outer side of the U-shaped plate 6. A second rack 22 is integrally connected to the outer side of the L-shaped plate 7. One end of the U-shaped plate 6 extending into the dehydration tank 3 is fixedly connected to a movable plate 8. A plurality of dredging rods 9 are fixedly connected to the top surface of the movable plate 8. A connecting rod 12 is fixedly connected to the top of the L-shaped plate 7. A pressing plate 13 is fixedly connected to the bottom end of the connecting rod 12;

[0036] A driving mechanism is installed on the top surface of the bottom plate 1. The driving mechanism includes two adapter plates 24 fixedly connected to the top surface of the bottom plate 1. A driving main shaft 25 and a driven main shaft 26 are rotatably connected between the two adapter plates 24. A first gear 27 and a second gear 28 are coaxially rotatably connected to the outer wall of the driving main shaft 25. The first gear 27 meshes with the first rack 21. The second gear 28 meshes with the second rack 22. One end of the driven main shaft 26 extending outside the adapter plate 24 is coaxially fixedly connected to a first driving pulley 30. The first driving pulley 30 and the first driven pulley 23 are driven by a transmission belt;

[0037] A clutch mechanism is installed between the driving main shaft 25 and the driven main shaft 26. The clutch mechanism includes a driving main shaft sleeve 32 and a driven main shaft sleeve 33. The driving main shaft sleeve 32 is sleeved on the outer wall of the driving main shaft 25. A second driving pulley 34 and a first friction disc 35 that are penetrated by the driving main shaft 25 are coaxially fixedly connected to both sides of the driving main shaft sleeve 32 respectively. A second friction disc 36 that cooperates with the first friction disc 35 is coaxially fixedly connected to the side surface of the second gear 28. The driven main shaft sleeve 33 is sleeved on the outer wall of the driven main shaft 26. A second driven pulley 38 and a third friction disc 39 that are penetrated by the driven main shaft 26 are coaxially fixedly connected to one side of the driven main shaft sleeve 33 in sequence. A fourth friction disc 40 that cooperates with the third friction disc 39 is coaxially fixedly connected to the outer wall of the driven main shaft 26. The second driving pulley 34 and the second driven pulley 38 are driven by a transmission belt.

[0038] As Figure 1 and Figure 7 shown, ribs are provided on the opposite side surfaces of both the first friction disc 35 and the second friction disc 36, and ribs are also provided on the opposite side surfaces of both the third friction disc 39 and the fourth friction disc 40.

[0039] The sludge to be dehydrated is placed inside the dehydration box 3, and then chemical agents are added to change the physical and chemical properties of the sludge. The chemical agents can be aluminum salts, iron salts and polyacrylamide. Aluminum salts such as aluminum sulfate, aluminum chloride, etc., and iron salts such as ferric chloride, ferric sulfate, etc.

[0040] like Figure 5 As shown, the adjusting threaded rod 42 is rotated by the hand wheel 29 to drive the adjusting plate 41 to move, further making the first friction disc 35 contact the second friction disc 36, and then the reduction motor 31 is started, the reduction motor 31 drives the active shaft 25 to rotate, and the active shaft 25 drives the first gear 27 and the second gear 28 to rotate synchronously through the first friction disc 35 and the second friction disc 36, the first gear 27 drives the L-shaped plate 6 to move downward through the first rack 21, the L-shaped plate 6 drives the movable plate 8 to move downward, the second gear 28 drives the L-shaped plate 7 to move downward through the second rack 22, and the L-shaped plate 7 drives the pressing plate 13 to press down through the connecting rod 12, so as to filter and dehydrate the sludge inside the dewatering box 3;

[0041] like Figure 5 As shown, after the sludge filtration is completed, the reduction motor 31 drives the active shaft 25 to rotate in the opposite direction, and the active shaft 25 drives the first gear 27 and the second gear 28 to rotate synchronously through the first friction plate 35 and the second friction plate 36. The first gear 27 drives the L-shaped plate 6 to move upward through the first rack 21, and the L-shaped plate 6 drives the movable plate 8 to move upward, thereby driving the dredging rod 9 to pass through the filter holes of the lower filter plate 4 and the upper filter plate 5 to clean the inside of the filter holes. The second gear 28 drives the L-shaped plate 7 to move upward through the second rack 22, and the L-shaped plate 7 drives the pressure plate 13 to move upward through the connecting rod 12;

[0042] A lifting mechanism is installed on the top surface of the bottom plate 1, and the lifting mechanism includes two fixed plates 16 fixedly connected to the top surface of the bottom plate 1, a bidirectional threaded rod 17 is rotatably connected between the two fixed plates 16, and two moving blocks 18 are symmetrically threaded on the outer wall of the bidirectional threaded rod 17. The top surfaces of the two moving blocks 18 are both hinged with connecting rods 19, and the top ends of the two connecting rods 19 are hinged with the same lifting rod 20. The lifting rod 20 passes through the top of the U-shaped plate 6, the movable plate 8 and the lower filter plate 4 in sequence and is fixedly connected to the bottom surface of the upper filter plate 5. It should be noted that the lifting rod 20 can slide with the U-shaped plate 6, and one end of the bidirectional threaded rod 17 extending to the outside of the fixed plate 16 is coaxially fixedly connected with a first driven pulley 23;

[0043] like Figure 6As shown, the adjusting threaded rod 42 is rotated by the hand wheel 29 to drive the adjusting plate 41 to move, further making the third friction disc 39 contact with the fourth friction disc 40, the active shaft 25 drives the second active pulley 34, the second driven pulley 38 and the transmission belt to drive the third friction disc 39 to rotate, the third friction disc 39 drives the driven shaft 26 to rotate through the fourth friction disc 40, the driven shaft 26 drives the bidirectional threaded rod 17 to rotate through the first active pulley 30 and the first driven pulley 23, the bidirectional threaded rod 17 drives the two moving blocks 18 to approach, and drives the lifting rod 20 to move upward through the connecting rod 19, and the lifting rod 20 drives the upper filter plate 5 to move upward, and the sludge that has been filtered on the upper filter plate 5 is lifted, so as to facilitate the unloading of the sludge.

[0044] like Figure 1 As shown, the back of the dehydration box 3 is fixedly connected with a first guide rail 10 and a second guide rail 11, the first guide rail 10 is slidably connected to the U-shaped plate 6, and the second guide rail 11 is slidably connected to the L-shaped plate 7. The first guide rail 10 and the second guide rail 11 can respectively limit the movement of the U-shaped plate 6 and the L-shaped plate 7, so that the U-shaped plate 6 and the L-shaped plate 7 can only move in the vertical direction.

[0045] like Figure 5 As shown, a plurality of filter holes are provided on the lower filter plate 4 and the upper filter plate 5. The filter holes on the lower filter plate 4 have the same diameter as the filter holes on the upper filter plate 5, and the dredging rod 9 can pass through the filter holes of the lower filter plate 4 and the upper filter plate 5. It should be noted that the positions of the filter holes on the lower filter plate 4 and the upper filter plate 5 correspond to each other, ensuring that the dredging rod 9 can pass through the filter holes on the lower filter plate 4 and the upper filter plate 5 at the same time.

[0046] like Figure 2 As shown, the top surface of the dehydration box 3 is fixedly connected with a door-type support plate 14, and the inner top surface of the door-type support plate 14 is fixedly installed with two limiting telescopic rods 15. The movable ends of the limiting telescopic rods 15 are fixedly connected to the top surface of the pressure plate 13, and the side surfaces of the pressure plate 13 can be sealed and slidably connected with the inner wall of the dehydration box 3, and the limiting telescopic rods 15 limit the movement of the pressure plate 13.

[0047] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, a reduction motor 31 is fixedly installed on the side of one of the adapter plates 24 , and the output shaft of the reduction motor 31 is coaxially fixedly connected with the driving shaft 25 , so that the reduction motor 31 can drive the driving shaft 25 to rotate.

[0048] The outer wall of the driving shaft 25 is fixedly connected to a limit strip 37, and the limit strip 37 is slidably connected to the driving shaft sleeve 32, the second driving pulley 34 and the first friction disc 35. Figure 6As shown, the limiting strip 37 can limit the relative rotation between the driving shaft 25 and the driving shaft sleeve 32 , the second driving pulley 34 and the first friction disk 35 .

[0049] An adjustment plate 41 is provided between the active shaft sleeve 32 and the driven shaft sleeve 33. Both the active shaft sleeve 32 and the driven shaft sleeve 33 are rotatably connected to the adjustment plate 41. An adjustment threaded rod 42 is rotatably connected to the side of the adjustment plate 41. The adjustment threaded rod 42 is threadedly connected to one of the adapter plates 24. One end of the adjustment threaded rod 42 extending to the adapter plate 24 is coaxially fixedly connected to a hand wheel 29. Figure 6 As shown, the forward rotation of the adjusting threaded rod 42 can make the first friction disc 35 and the second friction disc 36 approach and contact each other, and the reverse rotation of the adjusting threaded rod 42 can make the third friction disc 39 and the fourth friction disc 40 approach and contact each other.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sludge recycling system, comprising a bottom plate (1), characterized in that: The top surface of the bottom plate (1) is fixedly connected to four supporting legs (2), the top ends of the four supporting legs (2) are fixedly connected to the same dehydration box (3), a lower filter plate (4) is fixedly connected between the middle inner walls of the dehydration box (3), an upper filter plate (5) is slidably connected to the inner wall of the dehydration box (3), the upper filter plate (5) is located above the lower filter plate (4), a U-shaped plate (6) and an L-shaped plate (7) are slidably mounted on the back of the dehydration box (3), The outer side of the U-shaped plate (6) is integrally connected with a first rack (21), the outer side of the L-shaped plate (7) is integrally connected with a second rack (22), one end of the U-shaped plate (6) extending into the interior of the dehydration box (3) is fixedly connected with a movable plate (8), the top surface of the movable plate (8) is fixedly connected with a plurality of dredging rods (9), the top of the L-shaped plate (7) is fixedly connected with a connecting rod (12), and the bottom end of the connecting rod (12) is fixedly connected with a pressing plate (13); A lifting mechanism is installed on the top surface of the bottom plate (1), and the lifting mechanism includes two fixed plates (16) fixedly connected to the top surface of the bottom plate (1), a bidirectional threaded rod (17) is rotatably connected between the two fixed plates (16), two moving blocks (18) are symmetrically threaded on the outer wall of the bidirectional threaded rod (17), the top surfaces of the two moving blocks (18) are hinged with connecting rods (19), and the top ends of the two connecting rods (19) are hinged with the same lifting rod (20), the lifting rod (20) passes through the top of the U-shaped plate (6), the movable plate (8) and the lower filter plate (4) in sequence and is fixedly connected to the bottom surface of the upper filter plate (5), and one end of the bidirectional threaded rod (17) extending to the outside of the fixed plate (16) is coaxially fixedly connected to a first driven pulley (23); A driving mechanism is installed on the top surface of the base plate (1), and the driving mechanism includes two adapter plates (24) fixedly connected to the top surface of the base plate (1), a driving shaft (25) and a driven shaft (26) are rotatably connected between the two adapter plates (24), a first gear (27) and a second gear (28) are coaxially rotatably connected on the outer wall of the driving shaft (25), the first gear (27) is meshed with the first rack (21), and the second gear (28) is meshed with the second rack (22), and the driven shaft (26) extends to one end outside the adapter plate (24) and is coaxially fixedly connected with a first driving pulley (30), and the first driving pulley (30) and the first driven pulley (23) are driven by a transmission belt; A clutch mechanism is installed between the driving shaft (25) and the driven shaft (26), and the clutch mechanism includes a driving shaft sleeve (32) and a driven shaft sleeve (33). The driving shaft sleeve (32) is sleeved on the outer wall of the driving shaft (25). The two sides of the driving shaft sleeve (32) are coaxially fixedly connected with a second driving pulley (34) and a first friction disc (35) passed through by the driving shaft (25). The side surface of the second gear (28) is coaxially fixedly connected with a first friction disc (35) cooperating with the first friction disc (35). The driven shaft sleeve (33) is sleeved on the outer wall of the driven shaft (26); one side of the driven shaft sleeve (33) is coaxially fixedly connected with a second driven pulley (38) and a third friction disk (39) passed through by the driven shaft (26); a fourth friction disk (40) matched with the third friction disk (39) is coaxially fixedly connected to the outer wall of the driven shaft (26); the second driving pulley (34) and the second driven pulley (38) are driven by a transmission belt.

2. A sludge recycling system according to claim 1, characterized in that: The back of the dehydration box (3) is fixedly connected with a first guide rail (10) and a second guide rail (11); the first guide rail (10) is slidably connected to the U-shaped plate (6); and the second guide rail (11) is slidably connected to the L-shaped plate (7).

3. A sludge recycling system according to claim 1, characterized in that: The lower filter plate (4) and the upper filter plate (5) are provided with a plurality of filter holes, the filter holes on the lower filter plate (4) have the same diameter as the filter holes on the upper filter plate (5), and the dredging rod (9) can pass through the filter holes of the lower filter plate (4) and the upper filter plate (5).

4. A sludge recycling system according to claim 1, characterized in that: The top surface of the dehydration box (3) is fixedly connected with a door-type support plate (14), and the inner top surface of the door-type support plate (14) is fixedly installed with two limiting telescopic rods (15), the movable ends of the limiting telescopic rods (15) are fixedly connected to the top surface of the pressing plate (13), and the side surface of the pressing plate (13) can be sealed and slidably connected with the inner wall of the dehydration box (3).

5. A sludge recycling system according to claim 1, characterized in that: A reduction motor (31) is fixedly mounted on the side of one of the adapter plates (24), and the output shaft of the reduction motor (31) is coaxially fixedly connected to the driving rotating shaft (25).

6. A sludge recycling system according to claim 1, characterized in that: A limit strip (37) is fixedly connected to the outer wall of the active rotating shaft (25), and the limit strip (37) is slidably connected to the active rotating shaft sleeve (32), the second active pulley (34) and the first friction disc (35).

7. A sludge recycling system according to claim 1, characterized in that: An adjustment plate (41) is provided between the active rotating shaft sleeve (32) and the driven rotating shaft sleeve (33); the active rotating shaft sleeve (32) and the driven rotating shaft sleeve (33) are both rotatably connected to the adjustment plate (41); an adjustment threaded rod (42) is rotatably connected to the side of the adjustment plate (41); the adjustment threaded rod (42) is threadedly connected to one of the adapter plates (24); one end of the adjustment threaded rod (42) extending to the adapter plate (24) is coaxially fixedly connected to a hand wheel (29).

8. A sludge utilization method, comprising a sludge recycling system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: placing the sludge to be dehydrated in a dehydration tank (3), and then adding chemical agents to change the physical and chemical properties of the sludge; S2: The adjusting threaded rod (42) is rotated by the hand wheel (29) to drive the adjusting plate (41) to move, so that the first friction disc (35) and the second friction disc (36) are further brought into contact, and then the reduction motor (31) is started, the reduction motor (31) drives the driving shaft (25) to rotate, and the driving shaft (25) drives the first gear (27) and the second gear (28) to rotate synchronously through the first friction disc (35) and the second friction disc (36), the first gear (27) drives the L-shaped plate (6) to move downward through the first rack (21), the L-shaped plate (6) drives the movable plate (8) to move downward, the second gear (28) drives the L-shaped plate (7) to move downward through the second rack (22), and the L-shaped plate (7) drives the pressing plate (13) to press downward through the connecting rod (12), so as to filter and dehydrate the sludge inside the dewatering box (3); S3: After the sludge filtration is completed, the reduction motor (31) drives the active rotating shaft (25) to rotate in the opposite direction, and the active rotating shaft (25) drives the first gear (27) and the second gear (28) to rotate synchronously through the first friction plate (35) and the second friction plate (36). The first gear (27) drives the L-shaped plate (6) to move upward through the first rack (21), and the L-shaped plate (6) drives the movable plate (8) to move upward, thereby driving the dredging rod (9) to pass through the filter holes of the lower filter plate (4) and the upper filter plate (5) to clean the inside of the filter holes. The second gear (28) drives the L-shaped plate (7) to move upward through the second rack (22), and the L-shaped plate (7) drives the pressure plate (13) to move upward through the connecting rod (12); S4: The adjusting threaded rod (42) is rotated by the hand wheel (29) to drive the adjusting plate (41) to move, so that the third friction disc (39) is further brought into contact with the fourth friction disc (40). The driving shaft (25) drives the second driving pulley (34), the second driven pulley (38) and the transmission belt to drive the third friction disc (39) to rotate. The third friction disc (39) drives the driven shaft (26) to rotate through the fourth friction disc (40). The driven shaft (26) drives the bidirectional threaded rod (17) to rotate through the first driving pulley (30) and the first driven pulley (23). The bidirectional threaded rod (17) drives the two moving blocks (18) to approach each other, and drives the lifting rod (20) to move upward through the connecting rod (19). The lifting rod (20) drives the upper filter plate (5) to move upward, and lifts the sludge that has been filtered on the upper filter plate (5) to facilitate the unloading of the sludge.

Images