Sludge thickening and dewatering device

Abstract

The invention relates to the technical field of sludge treatment, in particular to a sludge thickening and dewatering device which comprises a filtering assembly and a dewatering assembly. The dewatering assembly comprises a dewatering mechanism which is communicated with the filtering assembly and is used for preliminarily dewatering the sludge, a sewage collecting mechanism which is communicated with the dewatering mechanism and is used for collecting sewage, and a concentrating mechanism which is communicated with the dewatering mechanism through an anti-blocking pipeline. The sewage and the sludge which are filtered are rapidly and preliminarily separated, a large amount of sewage is rapidly removed, the sludge which is preliminarily dewatered is precipitated and concentrated through the concentration mechanism, the dewatering efficiency is improved through step-by-step dewatering, the anti-blocking pipeline is automatically dredged through the sewage which is separated from the sewage collecting mechanism through the arrangement of the anti-blocking pipeline, and the anti-blocking efficiency is improved. Pollution and waste of water resources are avoided, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a sludge concentration and dehydration device. Background Art

[0002] Sludge is a byproduct of water treatment, sewage treatment and other industrial processes, and usually contains a lot of water. Through concentration and dehydration, the moisture content in the sludge can be reduced to a minimum, thereby reducing the volume and weight of the sludge and reducing the cost of treatment and disposal.

[0003] A fully automatic control system for sludge thickening and dehydration equipment in a water plant provided by publication number CN206955879U comprises a sludge screening tank, a sludge thickening tank, a sludge dehydration tank and a belt filter press, wherein a screening plate is installed inside the sludge screening tank, one side of the sludge screening tank is connected to a sludge thickening tank via a pipeline, the side of the sludge thickening tank away from the sludge screening tank is connected to a microwave evaporation decomposition tank via a pipeline, the side of the microwave evaporation decomposition tank away from the sludge thickening tank is connected to a sludge dehydration tank via a pipeline, a mounting frame is provided on the side of the sludge dehydration tank away from the microwave evaporation decomposition tank, and a belt filter press connected to the sludge dehydration tank is installed on the top of the mounting frame.

[0004] When the fully automatic control system of the water plant sludge thickening and dehydration equipment in the prior art is in use, a pipeline is used to transport the concentrated and dehydrated sludge. However, the concentrated sludge has a certain viscosity and will block the pipeline for transporting the sludge. The sludge in the pipeline needs to be removed manually, and the sludge removal efficiency is low. In addition, the sewage will be directly discharged from the dehydration device through the dehydration plate, and the reuse rate of the sewage is low. Summary of the invention

[0005] The object of the present invention is to provide a sludge concentration and dehydration device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A sludge concentration and dehydration device, comprising:

[0008] A filter assembly for filtering hard particles in the sludge; and

[0009] A dewatering assembly, the dewatering assembly comprising a dewatering mechanism connected to the filtering assembly for performing preliminary dewatering on the sludge, a sewage collecting mechanism connected to the dewatering mechanism for collecting sewage, and a concentrating mechanism connected to the dewatering mechanism via an anti-blocking pipe, the concentrating mechanism being used to dewater and concentrate the sludge delivered via the anti-blocking pipe, the anti-blocking pipe being connected to the sewage collecting mechanism, the sludge blocking the anti-blocking pipe being removed by absorbing sewage from the sewage collecting mechanism and being delivered back to the dewatering mechanism.

[0010] Preferably, the filter assembly includes a filter tank, a filter plate disposed in the filter tank, a submersible sewage pump disposed in the filter tank and below the filter plate, and a feed pipe passing through the filter tank and connected to the submersible sewage pump.

[0011] Preferably, the filter plate is used to allow sewage and sludge to pass through and then be sent into the feed pipe by the submersible sewage pump, while hard particles are retained on the filter plate.

[0012] Preferably, the dehydration mechanism includes a dehydration box connected to the feeding pipe, a dehydration chamber provided in the dehydration box, an extrusion plate arranged in the dehydration chamber, a rubber ring arranged on the extrusion plate and tightly attached to the side wall of the dehydration chamber, an extrusion push rod arranged on the dehydration chamber wall and connected to the extrusion plate, a leak-proof ring arranged on the extrusion plate and sleeved on the feeding pipe, a drain pipe inserted in the top wall of the dehydration chamber, a movable suction pipe arranged on the extrusion plate and inserted in the drain pipe, a water absorption hole opened on the movable suction pipe, and a water-permeable membrane arranged on the extrusion plate.

[0013] Preferably, after the feed pipe delivers the sludge and sewage into the dehydration chamber, the extrusion push rod pushes the extrusion plate downward, and the extruded sewage penetrates through the water-permeable membrane to the top of the extrusion plate and is discharged into the drain pipe by the movable suction pipe, while the sludge remains under the extrusion plate.

[0014] Preferably, the sewage collection mechanism includes a sewage tank 1 connected to the drainage pipe, a seepage baffle arranged in the sewage tank 1, the sewage tank 1 is divided into a sludge tank and a sewage tank by the seepage baffle, a suction pump 1 arranged on the drainage pipe, a sewage tank 2 connected to the sewage tank through an inlet pipe, and a suction pump 2 arranged on the inlet pipe, the seepage baffle is used to retain the sludge sent into the sludge tank by the suction pump 1 through the drainage pipe in the sludge tank, and the sewage is sent into the sewage tank by the suction pump 2 for treatment in the sewage tank 2.

[0015] Preferably, the anti-blocking pipeline includes an anti-blocking pipe 1 connected to the bottom wall of the dewatering box, a mud discharge pipe arranged on the side wall of the dewatering box, an anti-blocking pipe 2 arranged on the mud discharge pipe, a connecting pipe connected to the anti-blocking pipe 1 and the anti-blocking pipe 2, a flushing pipe arranged on the connecting pipe and connected to the sludge tank, a flushing pump arranged on the flushing pipe, a piston 1 in the anti-blocking pipe 1, an anti-blocking push rod 1 connected to the piston 1, a piston 2 arranged in the anti-blocking pipe 2, and an anti-blocking push rod 2 connected to the piston 2.

[0016] Preferably, when the mud discharge pipe is blocked, the second piston moves downward to connect the connecting pipe with the mud discharge pipe, so that the flushing pump pumps the sewage in the sludge tank into the mud discharge pipe to flush the sludge blocked in the mud discharge pipe. During this period, the second anti-blocking push rod drives the second piston to move back and forth, generating negative pressure to assist in absorbing the sludge in the mud discharge pipe, and the first anti-blocking push rod drives the first piston to intermittently connect the first anti-blocking pipe and the second anti-blocking pipe, so as to discharge the flushed sludge and sewage back into the dehydration chamber.

[0017] Preferably, the concentrating mechanism includes a concentrating tank connected to the mud discharge pipe, a mounting plate arranged in the concentrating tank, a piston three arranged in the mud discharge pipe, a plugging push rod arranged on the mounting plate and connected to the piston three, and a mud discharge groove arranged on the bottom wall of the concentrating tank.

[0018] Preferably, when the extrusion plate moves downward, the plugging push rod pushes the piston three into the mud discharge pipe to block the mud discharge pipe to prevent sludge and sewage from leaking directly from the mud discharge pipe. When the piston three opens the mud discharge pipe, the extrusion plate sends the preliminarily dehydrated sludge into the thickening tank for further dehydration and then discharges it from the thickening tank through the mud discharge trough.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention comprises a filtering component and a dehydration component. The dehydration component comprises a dehydration mechanism connected with the filtering component for preliminarily dehydrating sludge, a sewage collecting mechanism connected with the dehydration mechanism for collecting sewage, and a concentrating mechanism connected with the dehydration mechanism through an anti-blocking pipeline. The present invention preliminarily separates the filtered sewage and sludge through the arrangement of the sewage collecting mechanism and the dehydration mechanism, and quickly removes a large amount of sewage. The preliminarily dehydrated sludge is precipitated and concentrated through the arrangement of the concentrating mechanism, and the dehydration efficiency is increased through step-by-step dehydration. The anti-blocking pipeline is arranged to automatically dredge the anti-blocking pipeline using the sewage separated in the sewage collecting mechanism, thereby avoiding the pollution and waste of water resources and saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the dehydration mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the anti-blocking pipeline of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the filter tank of the present invention.

[0025] In the figure: 1, filter tank; 2, filter plate; 3, feed pipe; 4, submersible sewage pump; 5, dewatering box; 6, dewatering chamber; 7, extrusion plate; 8, extrusion push rod; 9, movable suction pipe; 10, water suction hole; 11, rubber ring; 12, leakproof ring; 13, water-permeable membrane; 14, drainage pipe; 15, water suction pump 1; 16, sewage tank 1; 17, sludge tank; 18, sewage tank; 19, seepage baffle; 2 0. Suction pump 2; 21. Water inlet pipe; 22. Sewage tank 2; 23. Anti-blocking pipe 1; 24. Anti-blocking push rod 1; 25. Connecting pipe; 26. Anti-blocking pipe 2; 27. Anti-blocking push rod 2; 28. Flushing pipe; 29. ​​Flushing pump; 30. Mud discharge pipe; 31. Piston 1; 32. Piston 2; 33. Mounting plate; 34. Filling push rod; 35. Piston 3; 36. Concentration tank; 37. Mud discharge trough. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 , the present invention provides a technical solution:

[0028] A sludge concentration and dehydration device, comprising:

[0029] A filter assembly is used to filter hard particles in sludge. The filter assembly includes a filter tank 1, a filter plate 2, a submersible sewage pump 4, and a feed pipe 3. The filter plate 2 is arranged in the filter tank 1. The filter plate 2 is connected to the side wall of the filter tank 1 by setting a hanging ring or the like. A vibrator connected to the filter plate 2 can be added according to actual usage conditions to increase the effect of screening hard particles such as stones. The submersible sewage pump 4 is arranged in the filter tank 1 and is located below the filter plate 2. The submersible sewage pump 4 is fixedly connected to the bottom wall of the filter tank 1 by setting bolts or the like. The feed pipe 3 passes through the filter tank 1 and is connected to the submersible sewage pump 4. The feed pipe 3 is fixedly connected to the side wall of the filter tank 1 by welding or the like. The feed pipe 3 is fixedly connected to the submersible sewage pump 4 by setting a clamp or the like. The filter plate 2 is used to allow sewage and sludge to pass through and be fed into the feed pipe 3 by the submersible sewage pump 4, while leaving hard particles on the filter plate 2.

[0030] The dehydration assembly includes a dehydration mechanism connected to the filtering assembly for preliminary dehydration of the sludge, a sewage collection mechanism connected to the dehydration mechanism for collecting sewage, and a concentration mechanism connected to the dehydration mechanism through an anti-blocking pipeline. The dehydration mechanism includes a dehydration box 5, a dehydration chamber 6, an extrusion plate 7, a rubber ring 11, an extrusion push rod 8, a leak-proof ring 12, a drain pipe 14, a movable suction pipe 9, a water suction hole 10, and a water-permeable membrane 13. The dehydration box 5 is connected to the feeding pipe 3, and the feeding pipe 3 is fixedly connected to the top wall of the dehydration box 5 by welding or the like. The dehydration chamber 6 is opened in the dehydration box 5, the feeding pipe 3 extends to the bottom wall of the dehydration chamber 6, the extrusion push rod 8 is arranged on the top wall of the dehydration chamber 6, the extrusion push rod 8 is fixedly connected with the top wall of the dehydration chamber 6 by means of bolts, etc., the extrusion plate 7 is arranged in the dehydration chamber 6 and connected with the extrusion push rod 8, the extrusion plate 7 is fixedly connected with the extrusion push rod 8 by means of bolts, etc., the rubber ring 11 is arranged on the extrusion plate 7 and is tightly attached to the side wall of the dehydration chamber 6, the rubber ring 11 is fixedly connected with the extrusion plate 7 by means of gluing, etc., and the rubber ring 11 is connected to the dehydration chamber 6. 6 is movably connected, the leak-proof ring 12 is arranged on the extrusion plate 7 and sleeved on the feeding pipe 3, the leak-proof ring 12 is fixedly connected to the extrusion plate 7 by gluing or the like, the leak-proof ring 12 is movably connected to the feeding pipe 3, the drain pipe 14 is inserted in the top wall of the dehydration chamber 6, the drain pipe 14 is fixedly connected to the top wall of the dehydration box 5 by welding or the like, the movable suction pipe 9 is arranged on the extrusion plate 7 and inserted in the drain pipe 14, the movable suction pipe 9 is fixedly connected to the extrusion plate 7 by welding or the like, the movable suction pipe 9 is movably connected to the drain pipe 14, so that The movable suction pipe 9 can be retracted into the drain pipe 14 or extended from the drain pipe 14, the water suction hole 10 is opened on the movable suction pipe 9, the water-permeable membrane 13 is arranged on the extrusion plate 7, the water-permeable membrane 13 is fixedly connected to the extrusion plate 7 by gluing or the like, the water-permeable membrane 13 can be a fine filter cloth with multiple layers, when the feeding pipe 3 feeds the sludge and sewage into the dehydration chamber 6, the extrusion push rod 8 pushes the extrusion plate 7 downward, the extruded sewage penetrates through the water-permeable membrane 13 to the top of the extrusion plate 7, and is discharged into the drain pipe 14 by the movable suction pipe 9, while the sludge remains below the extrusion plate 7.

[0031] The sewage collection mechanism includes a sewage tank 16, a seepage baffle 19, a sludge tank 17, a sewage tank 18, a water suction pump 15, a sewage tank 22, a water inlet pipe 21 and a water suction pump 20. The sewage tank 16 is connected to the drainage pipe 14, and the sewage tank 16 and the drainage pipe 14 are fixedly connected by welding or the like. The seepage baffle 19 is arranged in the sewage tank 16, and the seepage baffle 19 is fixedly connected to the inner wall of the sewage tank 16 by gluing or the like. The sewage tank 16 is divided into a sludge tank 17 and a sewage tank 18 by the seepage baffle 19. The drainage pipe 14 and the sludge tank 17 is connected, the water suction pump 15 is arranged on the drain pipe 14, the water suction pump 15 is fixedly connected to the drain pipe 14 by means of setting a clamp or the like, the sewage tank 22 is connected to the sewage tank 18 through the water inlet pipe 21, the water suction pump 20 is arranged on the water inlet pipe 21, the water suction pump 20 is fixedly connected to the water inlet pipe 21 by means of setting a clamp or the like, the seepage baffle 19 is used for retaining the sludge sent into the sludge tank 17 through the drain pipe 14 by the water suction pump 15 in the sludge tank 17, and the sewage is sent into the sewage tank 18 and sent into the sewage tank 22 by the water suction pump 20 for sewage treatment.

[0032] The anti-blocking pipeline includes an anti-blocking pipe 23, a mud discharge pipe 30, an anti-blocking pipe 26, a connecting pipe 25, a flushing pipe 28, a flushing pump 29, a piston 31, an anti-blocking push rod 24, a piston 232 and an anti-blocking push rod 27. The anti-blocking pipe 23 is connected to the bottom wall of the dehydration box 5, and the anti-blocking pipe 23 is fixedly connected to the bottom wall of the dehydration box 5 by welding or the like. The mud discharge pipe 30 is arranged on the side wall of the dehydration box 5, and the mud discharge pipe 30 is fixedly connected to the side wall of the dehydration box 5 by welding or the like. The anti-blocking pipe 26 is arranged on the mud discharge pipe 30. The pipe 26 is fixedly connected to the mud discharge pipe 30 by welding or the like, the connecting pipe 25 is connected to the anti-blocking pipe 1 23 and the anti-blocking pipe 2 26, one end of the connecting pipe 25 is fixedly connected to the anti-blocking pipe 1 23 by welding or the like, the other end of the connecting pipe 25 is fixedly connected to the anti-blocking pipe 2 26 by welding or the like, the flushing pipe 28 is arranged on the connecting pipe 25 and is connected to the sludge tank 17, one end of the flushing pipe 28 is fixedly connected to the connecting pipe 25 by welding or the like, the other end of the flushing pipe 28 is fixedly connected to the sludge tank 17, and the flushing pump 29 is arranged on the flushing pipe 28, and is fixedly connected to the flushing pipe 28 by setting a clamp or the like. The piston 1 31 is in the anti-blocking pipe 1 23, and the piston 1 31 is movably connected to the anti-blocking pipe 1 23. The anti-blocking push rod 1 24 is connected to the piston 1 31, and the anti-blocking push rod 1 24 is fixedly connected to the piston 1 31 by setting screws or the like. The piston 2 32 is in the anti-blocking pipe 26, and the piston 2 32 is movably connected to the anti-blocking pipe 26. The anti-blocking push rod 27 is connected to the piston 2 32, and the anti-blocking push rod 27 is connected to the piston 2 by setting screws or the like. 32 is fixedly connected. When the mud discharge pipe 30 is blocked, the piston 2 32 moves downward to connect the connecting pipe 25 with the mud discharge pipe 30, so that the flushing pump 29 pumps the sewage in the sludge tank 17 into the mud discharge pipe 30 to flush the sludge blocked in the mud discharge pipe 30. During this period, the anti-blocking push rod 27 drives the piston 2 32 to move back and forth, generating negative pressure to assist in absorbing the sludge in the mud discharge pipe 30, and the anti-blocking push rod 1 24 drives the piston 1 31 to intermittently connect the anti-blocking pipe 1 23 and the anti-blocking pipe 2 26, so as to discharge the flushed sludge and sewage back to the dehydration chamber 6.

[0033] The concentrating mechanism includes a concentrating tank 36, a mounting plate 33, a piston three 35, a plugging push rod 34, and a mud discharge groove 37. The concentrating tank 36 is connected to the mud discharge pipe 30, and the concentrating tank 36 and the mud discharge pipe 30 are fixedly connected by setting a clamp or the like. The mounting plate 33 is arranged on the inner wall of the concentrating tank 36, and the mounting plate 33 is fixedly connected to the inner wall of the concentrating tank 36 by setting bolts or the like. The piston three 35 is arranged in the mud discharge pipe 30, and the piston three 35 is movably connected to the mud discharge pipe 30. The plugging push rod 34 is arranged on the mounting plate 33 and connected to the piston three 35, and the plugging push rod 34 and the mounting plate 33 are fixedly connected by setting bolts or the like. The plugging push rod 34 is fixedly connected to the piston three 35 by means of bolts, etc., the mud discharge groove 37 is arranged on the bottom wall of the thickening tank 36, and the mud discharge groove 37 is provided with an openable and closable side wall door on the side wall of the thickening tank 36. When the sludge needs to be discharged, the side wall door can be opened. When the squeezing plate 7 moves downward, the plugging push rod 34 pushes the piston three 35 to extend into the mud discharge pipe 30 to block the mud discharge pipe 30 to prevent the sludge and sewage from leaking directly from the mud discharge pipe 30. When the piston three 35 opens the mud discharge pipe 30, the squeezing plate 7 sends the preliminarily dehydrated sludge into the thickening tank 36 for further dehydration and then discharges it from the thickening tank 36 from the mud discharge groove 37.

[0034] Working principle: When in use, the sludge with water is sent into the filter tank 1, the sewage and sludge pass through the filter plate 2 and fall under the filter plate 2, leaving the hard particles on the filter plate 2, the submersible sewage pump 4 is started to send the filtered sludge and sewage through the feeding pipe 3 into the dewatering box 5, the extrusion push rod 8 is started, pushing the extrusion plate 7 to move downward, at the same time, the filling push rod 34 pushes the piston three 35 into the mud discharge pipe 30 to block the mud discharge pipe 30, the extrusion plate 7 presses down the sewage and sludge, so that the sewage penetrates through the water-permeable membrane 13 to the top of the extrusion plate 7 and is discharged into the drain pipe 14 by the movable suction pipe 9, while the sludge remains under the extrusion plate 7, the filling push rod 34 is started, and the piston three 35 is pulled to leave the mud discharge pipe 30, The squeezing plate 7 presses the sludge into the concentration tank 36 through the sludge discharge pipe 30, and the sludge settles and evaporates water in the concentration tank 36 to be concentrated, so that the sludge is further dehydrated. When the sludge discharge pipe 30 is blocked, the piston 2 32 moves downward to connect the connecting pipe 25 with the sludge discharge pipe 30, so that the flushing pump 29 pumps the sewage in the sludge tank 17 into the sludge discharge pipe 30 to flush the sludge blocked in the sludge discharge pipe 30. During this period, the anti-blocking push rod 27 drives the piston 2 32 to move back and forth, generating negative pressure to assist in absorbing the sludge in the sludge discharge pipe 30, and the anti-blocking push rod 1 24 drives the piston 1 31 to intermittently connect the anti-blocking pipe 1 23 and the anti-blocking pipe 2 26, so as to discharge the flushed sludge and sewage back to the dehydration chamber 6.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge concentration and dehydration device, characterized in that: include: A filter assembly, the filter assembly being used to filter hard particles in the sludge; as well as A dewatering assembly, the dewatering assembly comprising a dewatering mechanism connected to the filtering assembly for performing preliminary dewatering on the sludge, a sewage collecting mechanism connected to the dewatering mechanism for collecting sewage, and a concentrating mechanism connected to the dewatering mechanism via an anti-blocking pipe, the concentrating mechanism being used to dewater and concentrate the sludge delivered via the anti-blocking pipe, the anti-blocking pipe being connected to the sewage collecting mechanism, the sludge blocking the anti-blocking pipe being removed by absorbing sewage from the sewage collecting mechanism and being delivered back to the dewatering mechanism.

2. A sludge concentration and dehydration device according to claim 1, characterized in that: The filter assembly comprises a filter pool, a filter plate arranged in the filter pool, a submersible sewage pump arranged in the filter pool and located below the filter plate, and a feed pipe passing through the filter pool and communicating with the submersible sewage pump.

3. A sludge concentration and dehydration device according to claim 2, characterized in that: The filter plate is used to allow sewage and sludge to pass through and then be sent into the feed pipe by the submersible sewage pump, while hard particles are retained on the filter plate.

4. A sludge concentration and dehydration device according to claim 2, characterized in that: The dehydration mechanism includes a dehydration box connected to the feeding pipe, a dehydration chamber provided in the dehydration box, an extrusion plate arranged in the dehydration chamber, a rubber ring arranged on the extrusion plate and tightly attached to the side wall of the dehydration chamber, an extrusion push rod arranged on the wall of the dehydration chamber and connected to the extrusion plate, a leak-proof ring arranged on the extrusion plate and sleeved on the feeding pipe, a drainage pipe inserted in the top wall of the dehydration chamber, an active suction pipe arranged on the extrusion plate and inserted in the drainage pipe, a water absorption hole opened on the active suction pipe, and a water-permeable membrane arranged on the extrusion plate.

5. A sludge concentration and dehydration device according to claim 4, characterized in that: When the feeding pipe delivers the sludge and sewage into the dehydration chamber, the extrusion push rod pushes the extrusion plate downward, and the extruded sewage penetrates through the water-permeable membrane to the top of the extrusion plate and is discharged into the drainage pipe by the movable suction pipe, while the sludge remains under the extrusion plate.

6. A sludge concentration and dehydration device according to claim 5, characterized in that: The sewage collection mechanism includes a sewage pool 1 connected to the drainage pipe, a seepage baffle arranged in the sewage pool 1, the sewage pool 1 is divided into a sludge tank and a sewage tank by the seepage baffle, a suction pump 1 arranged on the drainage pipe, a sewage pool 2 connected to the sewage tank through an inlet pipe, and a suction pump 2 arranged on the inlet pipe, the seepage baffle is used to keep the sludge sent into the sludge tank by the suction pump 1 through the drainage pipe in the sludge tank, and the sewage sent into the sewage tank is sent into the sewage pool 2 by the suction pump 2 for treatment.

7. A sludge concentration and dehydration device according to claim 6, characterized in that: The anti-blocking pipeline includes an anti-blocking pipe 1 connected to the bottom wall of the dewatering box, a mud discharge pipe arranged on the side wall of the dewatering box, an anti-blocking pipe 2 arranged on the mud discharge pipe, a connecting pipe connected to the anti-blocking pipe 1 and the anti-blocking pipe 2, a flushing pipe arranged on the connecting pipe and connected to the sludge tank, a flushing pump arranged on the flushing pipe, a piston 1 in the anti-blocking pipe 1, an anti-blocking push rod 1 connected to the piston 1, a piston 2 arranged in the anti-blocking pipe 2, and an anti-blocking push rod 2 connected to the piston 2.

8. The sludge concentration and dehydration device according to claim 7, characterized in that: When the mud discharge pipe is blocked, the second piston moves downward to connect the connecting pipe with the mud discharge pipe, so that the flushing pump pumps the sewage in the sludge tank into the mud discharge pipe to flush the sludge blocked in the mud discharge pipe. During this period, the second anti-blocking push rod drives the second piston to move back and forth, generating negative pressure to assist in absorbing the sludge in the mud discharge pipe, and the first anti-blocking push rod drives the first piston to intermittently connect the first anti-blocking pipe and the second anti-blocking pipe, so as to discharge the flushed sludge and sewage back into the dehydration chamber.

9. The sludge concentration and dehydration device according to claim 7, characterized in that: The concentrating mechanism includes a concentrating tank connected to the mud discharge pipe, a mounting plate arranged in the concentrating tank, a piston three arranged in the mud discharge pipe, a plugging push rod arranged on the mounting plate and connected to the piston three, and a mud discharge groove arranged on the bottom wall of the concentrating tank.

10. The sludge concentration and dehydration device according to claim 9, characterized in that: When the squeezing plate moves downward, the plugging push rod pushes the piston three into the mud discharge pipe to block the mud discharge pipe to prevent sludge and sewage from leaking directly from the mud discharge pipe. When the piston three opens the mud discharge pipe, the squeezing plate sends the preliminarily dehydrated sludge into the thickening tank for further dehydration and then discharges it from the thickening tank through the mud discharge trough.

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