Energy-saving sludge dewatering equipment

Abstract

The utility model relates to the field of sludge dewatering equipment, and discloses energy-saving sludge dewatering equipment which comprises a box body, a coarse filter plate is arranged in the box body, a fine filter plate is arranged at the bottom of the coarse filter plate, first connecting blocks are fixedly connected to the front side wall and the rear side wall of the coarse filter plate, and second connecting blocks are fixedly connected to the front side wall and the rear side wall of the fine filter plate. And supporting blocks are fixedly connected to the top of the interior of the box body, and first spring pieces are fixedly connected to the right side walls of each first connecting block and the corresponding supporting block. Through the arrangement of the coarse filter plate, the fine filter plate and the support rod, the problems that the solid-liquid separation effect is greatly reduced, the operation efficiency of equipment is reduced, and the downtime and the maintenance cost of the equipment are increased can be solved; the front side wall and the rear side wall of the coarse filter plate are connected with first spring pieces on the right side wall of a supporting block at the top in the box body through first connecting blocks, so that the sludge dewatering quality is effectively improved, the frequency of shutdown cleaning of the equipment is reduced, and the continuous operation time of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering equipment, and in particular to an energy-saving sludge dewatering equipment. Background Technology

[0002] Energy-saving sludge dewatering equipment is a type of machinery specifically designed for dewatering sludge, reducing its moisture content to facilitate subsequent transportation, disposal, or further processing. Through the adoption of a series of energy-saving technologies and optimized designs, it achieves effective dewatering while minimizing energy consumption. It is widely used in sewage treatment plants, industrial wastewater treatment facilities, sludge disposal centers, and other locations to meet the dewatering requirements in sludge treatment processes.

[0003] During sludge dewatering, solid matter in the sludge easily clogs the filter components. In most existing single-pass filtration devices, insufficient water removal may be achieved, resulting in a high moisture content in the discharged sludge cake. This fails to achieve the expected dewatering effect, significantly reducing solid-liquid separation efficiency, impacting sludge dewatering quality, lowering equipment operating efficiency, and increasing downtime and maintenance costs. During sludge dewatering, fine particles and organic matter in the sludge gradually adhere to the surface of the filter screen and filter cloth. Without a spray system for cleaning, these deposits accumulate, clogging the pores of the filter screen and filter cloth, slowing down the filtration speed, reducing dewatering efficiency, and lowering the structural strength and stability of the equipment. Utility Model Content

[0004] The main purpose of this utility model is to provide an energy-saving sludge dewatering equipment that can effectively solve the problems of significantly reduced solid-liquid separation effect, affected sludge dewatering quality, reduced equipment operating efficiency, increased equipment downtime and maintenance costs, slower filtration speed, reduced dewatering efficiency, and reduced equipment structural strength and stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving sludge dewatering device, comprising a housing, wherein a coarse filter plate is disposed inside the housing, and a fine filter plate is disposed at the bottom of the coarse filter plate; first connecting blocks are fixedly connected to the front and rear side walls of the coarse filter plate; a support block is fixedly connected to the top of the housing; a first spring plate is fixedly connected to the right side wall of each first connecting block and support block; second connecting blocks are fixedly connected to the front and rear side walls of the coarse and fine filter plates; second spring plates are fixedly connected to the right side walls of the two upper and lower second connecting blocks; semicircular blocks are fixedly connected to the front and rear sides of the right side of the fine filter plate; connecting rods are disposed inside the two semicircular blocks; a protective box is fixedly connected to the top of the left side wall of the coarse filter plate; a bidirectional motor is disposed inside the protective box; rotating rods are fixedly connected to the front and rear output ends of the bidirectional motor; eccentric wheels are fixedly connected to the other ends of the two rotating rods; and support rods are rotatably connected to the outer sides of the two eccentric wheels.

[0006] Furthermore, the other side of the two support rods is rotatably connected to the front and rear ends of the eccentric wheel. A first row of mud plates is fixedly connected to the left side wall of the coarse filter plate, and the first row of mud plates is connected through the left side wall of the box. A second row of mud plates is fixedly connected to the left side wall of the fine filter plate, and the second row of mud plates is connected through the left side wall of the box. The second row of mud plates is located at the bottom of the first row of mud plates.

[0007] Furthermore, a guide plate is fixedly connected to the inner bottom wall of the box, a drain pipe is fixedly connected to the right side wall of the box, a feed box is fixedly connected to the top of the box, a guide box is fixedly connected to the inside of the top wall of the box, the guide box is located inside the feed box, and a base is fixedly connected to the bottom wall of the box.

[0008] Furthermore, a first fixed box is fixedly connected to the top of the outer side of the box, a second fixed box is fixedly connected to the bottom of the outer side of the box, a bottom plate is fixedly connected to the rear side wall of the box, and a pump is provided on the top wall of the bottom plate.

[0009] Furthermore, the input end of the pump is fixedly connected to a first connecting pipe, the output end of the pump is fixedly connected to a three-way pipe, and the top end of the three-way pipe is fixedly connected to a delivery pipe.

[0010] Furthermore, a first spray pipe is fixedly connected to both the front and rear sides of the interior of the first fixed box, and a second connecting pipe is fixedly connected to both the front and rear sides of the interior of the first fixed box. The two first spray pipes and the second connecting pipe are connected in a continuous manner. The rear side wall of the rear first spray pipe is connected in a continuous manner to the top of the conveying pipe. The inner walls of the first spray pipe and the second connecting pipe are connected in a continuous manner to a first nozzle.

[0011] Furthermore, each of the second fixed boxes is fixedly connected to a second spray pipe, and the four second spray pipes are all interconnected. The rear side wall of the rear second spray pipe is connected to the outer front end of the three-way pipe, and the inner wall of each of the four second spray pipes is fixedly connected to a second nozzle.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through its design of a coarse filter plate, fine filter plate, second spring plate, bidirectional motor, eccentric wheel, and support rod, solves the problems that significantly reduce the solid-liquid separation effect, affect the quality of sludge dewatering, decrease equipment operating efficiency, and increase equipment downtime and maintenance costs. The front and rear side walls of the coarse filter plate are connected to the first spring plate on the right side wall of the support block at the top of the housing via first connecting blocks. Under the pushing and pulling of the support rod and the elastic action of the first spring plate, the coarse filter plate vibrates up and down. When the coarse filter plate vibrates, due to the connection between the front and rear side walls of both the coarse and fine filter plates, some of the vibration energy of the coarse filter plate is transferred to the fine filter plate. Combined with the elastic action of the second spring plate connected to the front and rear side walls of the fine filter plate, the fine filter plate also vibrates accordingly, thus separating sludge and wastewater. This effectively improves the quality of sludge dewatering, reduces the number of times the equipment needs to be shut down for cleaning, and increases the continuous operating time of the equipment.

[0014] 2. By incorporating a second fixed box, a pump, a triplex pipe, a first spray pipe, a second spray pipe, and a second nozzle, the system effectively addresses the issues of slowed filtration speed, reduced dehydration efficiency, and compromised structural strength and stability. A portion of the liquid from the pump is pumped upwards into the first fixed box via a delivery pipe. Within the first fixed box, first spray pipes are fixedly connected to both the front and rear sides, forming a complete spray pipe network via a second connecting pipe. When liquid reaches the rear first spray pipe through the delivery pipe, it flows within the pipe and is sprayed out through the first nozzle, which is connected to the inner wall of the first spray pipe and the second connecting pipe. These first nozzles are evenly distributed on the inner walls of the first spray pipe and the second connecting pipe, spraying the liquid at a specific pressure and angle. This effectively prevents filtration speed reduction due to blockage, ensuring stable dehydration efficiency and improving the dehydration effect.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an energy-saving sludge dewatering device proposed in this utility model;

[0017] Figure 2This is a cross-sectional view of the internal structure of the housing of an energy-saving sludge dewatering device proposed in this utility model;

[0018] Figure 3 This is a structural diagram of the second connecting block of an energy-saving sludge dewatering device proposed in this utility model;

[0019] Figure 4 This is a support structure diagram of an energy-saving sludge dewatering device proposed in this utility model;

[0020] Figure 5 This utility model provides a structural diagram of the rotating rod of an energy-saving sludge dewatering device.

[0021] Figure 6 This is a structural diagram of the rear side of the housing of an energy-saving sludge dewatering device proposed in this utility model;

[0022] Figure 7 This is a schematic diagram of the first spray pipe of an energy-saving sludge dewatering device proposed in this utility model;

[0023] Figure 8 This is a structural diagram of the second fixed box of an energy-saving sludge dewatering device proposed in this utility model.

[0024] Legend:

[0025] 1. Filter box; 2. Coarse filter plate; 3. Fine filter plate; 4. First connecting block; 5. Support block; 6. First spring plate; 7. Second connecting block; 8. Second spring plate; 9. Semicircular block; 10. Connecting rod; 11. Protective box; 12. Bidirectional motor; 13. Rotating rod; 14. Eccentric wheel; 15. Support rod; 16. First mud discharge plate; 17. Second mud discharge plate; 18. Guide plate; 19. Drain pipe; 20. Feed box; 21. Guide box; 22. Base; 23. First fixed box; 24. Second fixed box; 25. Bottom plate; 26. Pump; 27. First connecting pipe; 28. Triple pipe; 29. ​​Conveying pipe; 30. Second connecting pipe; 31. First spray pipe; 32. First nozzle; 33. Second spray pipe; 34. Second nozzle. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5As shown: An energy-saving sludge dewatering device includes a housing 1. A coarse filter plate 2 is installed inside the housing 1, and a fine filter plate 3 is installed at the bottom of the coarse filter plate 2. The coarse filter plate 2 is used to perform preliminary filtration of sludge and sewage, filtering out residual impurities and particles. The sludge and water then flow together onto the fine filter plate 3 for further filtration, thereby separating the sludge and water.

[0028] First connecting blocks 4 are fixedly connected to both the front and rear side walls of the coarse filter plate 2, and support blocks 5 are fixedly connected to the top of the inner wall of the housing 1. A first spring sheet 6 is fixedly connected to the right side wall of each first connecting block 4 and support block 5. The support blocks 5 on the front and rear sides of the coarse filter plate 2 and the first spring sheet 6 on the top wall of the inner wall of the housing 1 connect to the second connecting blocks 7, thus supporting and fixing the coarse filter plate 2. This increases the vibration frequency of the coarse filter plate 2 when it vibrates. The front and rear side walls of the coarse filter plate 2 and the fine filter plate 3 are fixedly connected. There is a second connecting block 7, and a second spring plate 8 is fixedly connected to the right side wall of the two upper and lower second connecting blocks 7. Semicircular blocks 9 are fixedly connected to the front and rear sides of the right side of the fine filter plate 3. Connecting rods 10 are provided inside the two semicircular blocks 9. They are connected to the second spring plates 8 through the second connecting blocks 7 on the coarse filter plate 2 and the fine filter plate 3 to support the fine filter plate 3 and fix the fine filter plate 3 to the bottom of the coarse filter plate 2. Through the elastic action of the second spring plate 8, the fine filter plate 3 will also vibrate accordingly to separate sludge and sewage.

[0029] A protective box 11 is fixedly connected to the top of the left side wall of the coarse filter plate 2. A bidirectional motor 12 is installed inside the protective box 11. The protective box 11 is used to protect the bidirectional motor 12 from the outside and fix the bidirectional motor 12 to the top of the coarse filter plate 2. The two output ends of the bidirectional motor 12 are fixedly connected to rotating rods 13. The other ends of the two rotating rods 13 are fixedly connected to eccentric wheels 14. The outer sides of the two eccentric wheels 14 are rotatably connected to support rods 15. The other side of the two support rods 15 is rotatably connected to the front and rear ends of the eccentric wheels 14. The two output ends of the bidirectional motor 12 drive the rotating rods 13 to rotate, which in turn causes the eccentric wheels 14 to rotate. The rotation of the eccentric wheels 14 will drive the support rods 15 rotatably connected to their outer sides to move. Since the other side of the support rods 15 is rotatably connected to the front and rear ends of the eccentric wheels 14, the connecting rod 10 wobbles inside the semicircular block 9. This causes the support rods 15 to reciprocate pushing and pulling during the rotation of the eccentric wheels 14, which drives the fine filter plate 3 to wobble left and right. Through the connection of the second connecting block 7 and the second spring plate 8, the coarse filter plate 2 and the fine filter plate 3 vibrate to filter and separate the sludge.

[0030] A first row of mud plates 16 is fixedly connected to the left side wall of the coarse filter plate 2. The first row of mud plates 16 is connected through the left side wall of the housing 1. A second row of mud plates 17 is fixedly connected to the left side wall of the fine filter plate 3. The second row of mud plates 17 is connected through the left side wall of the housing 1 and is located at the bottom of the first row of mud plates 16. By vibration, the sludge and impurities inside the coarse filter plate 2 will be discharged through the first row of mud plates 16 on the left side. In addition, the sludge inside the fine filter plate 3 will be discharged through the second row of mud plates 17 on the left side.

[0031] like Figure 1 - Figure 6 As shown, a guide plate 18 is fixedly connected to the bottom wall of the inner side of the box 1, and a drain pipe 19 is fixedly connected to the right side wall of the box 1. The guide plate 18 is used to guide the filtered sewage to flow into the interior of the drain pipe 19 and discharge it through the drain pipe 19.

[0032] A feed box 20 is fixedly connected to the top of the housing 1, and a guide box 21 is fixedly connected to the inside of the top wall of the housing 1. The guide box 21 is located inside the feed box 20, allowing sludge to flow into the guide box 21 and then fall precisely into the coarse filter plate 2 for processing. A base 22 is fixedly connected to the bottom wall of the housing 1.

[0033] like Figure 6 - Figure 8 As shown, a first fixed box 23 is fixedly connected to the top of the outer side of the box 1, and a second fixed box 24 is fixedly connected to the bottom of the outer side of the box 1. The first fixed box 23 and the second fixed box 24 are used to connect the internal pipes and so on, so as to protect the pipes from the outside.

[0034] A base plate 25 is fixedly connected to the rear side wall of the housing 1. A pump 26 is installed on the top wall of the base plate 25. A first connecting pipe 27 is fixedly connected to the input end of the pump 26. A triple pipe 28 is fixedly connected to the output end of the pump 26. A conveying pipe 29 is fixedly connected to the top end of the triple pipe 28. After the pump 26 is started, it draws the liquid required for spraying through the first connecting pipe 27 fixedly connected to its input end from external water pipes, etc. The drawn liquid enters the pump 26 and is then diverted through the triple pipe 28 fixedly connected to its output end. The triple pipe 28 conveys part of the liquid upward through the conveying pipe 29 fixedly connected to its top end.

[0035] like Figure 6 - Figure 8As shown, a first spray pipe 31 is fixedly connected to both the front and rear sides of the interior of the first fixed box 23, and a second connecting pipe 30 is fixedly connected to both the front and rear sides of the interior of the first fixed box 23. The two first spray pipes 31 and the second connecting pipe 30 are interconnected. The rear side wall of the rear first spray pipe 31 is connected to the top of the conveying pipe 29. The inner walls of the first spray pipe 31 and the second connecting pipe 30 are connected to the first nozzle 32. Water from inside the conveying pipe 29 flows into the interior of the rear first spray pipe 31 and is interconnected with the two first spray pipes 31 and the second connecting pipe 30 to distribute the water evenly into each pipe. The water is then sprayed out by the first nozzle 32 to spray the interior of the coarse filter plate 2 to prevent impurities from remaining in the slots.

[0036] The interior of the second fixed box 24 is fixedly connected with four second spray pipes 33, all of which are interconnected. The rear sidewall of the rear second spray pipe 33 is connected to the outer front end of the triplet 28. The inner walls of the four second spray pipes 33 are fixedly connected with second nozzles 34. The triplet 28 transports another portion of the liquid to the second fixed box 24. The four interconnected second spray pipes 33 inside the second fixed box 24 allow the liquid to smoothly enter the second spray pipes 33. The liquid entering the second spray pipes 33 is then sprayed out through the second nozzles 34 fixedly connected to their inner walls. These second nozzles 34 are also evenly distributed on the inner walls of the second spray pipes 33, spraying the liquid at appropriate pressure and angle to spray the bottom and holes of the fine filter plate 3, preventing impurities from remaining in the gaps.

[0037] It should be noted that this utility model is an energy-saving sludge dewatering device. First, the bidirectional motor 12 and the pump 26 are connected to an external power source to supply power to the device.

[0038] When the sludge is transported into the housing 1, it first falls onto the coarse filter plate 2. The coarse filter plate 2 serves as a preliminary filter, with relatively large pores that can intercept larger solid particles and impurities in the sludge. During this process, some of the water in the sludge will pass through the coarse filter plate 2 under the influence of gravity, initiating preliminary solid-liquid separation. The sludge, after preliminary filtration by the coarse filter plate 2, will continue to move downwards to the fine filter plate 3. The pores of the fine filter plate 3 are smaller than those of the coarse filter plate 2, enabling finer filtration of the sludge after coarse filtration, intercepting smaller solid particles that were not removed during coarse filtration, further achieving solid-liquid separation, and allowing more water to pass through the fine filter plate 3.

[0039] The bidirectional motor 12 starts when the equipment is running, and its two output ends drive the rotating rod 13 to rotate, which in turn causes the eccentric wheel 14 to rotate. The rotation of the eccentric wheel 14 will drive the support rod 15, which is rotatably connected to its outer side, to move. Since the other side of the support rod 15 is rotatably connected to the front and rear ends of the eccentric wheel 14, the support rod 15 will produce a reciprocating pushing and pulling action during the rotation of the eccentric wheel 14.

[0040] The pushing and pulling action of the support rod 15 is transmitted to the coarse filter plate 2. At the same time, the front and rear side walls of the coarse filter plate 2 are connected to the first spring plate 6 on the right side wall of the support block 5 at the top of the box 1 through the first connecting block 4. Under the pushing and pulling of the support rod 15 and the elastic cooperation of the first spring plate 6, the coarse filter plate 2 will vibrate up and down. When the coarse filter plate 2 vibrates, since the front and rear side walls of the coarse filter plate 2 and the fine filter plate 3 are connected by corresponding connecting blocks and spring plates, part of the vibration energy of the coarse filter plate 2 will be transferred to the fine filter plate 3. In addition, the elastic action of the second spring plate 8 connected to the front and rear side walls of the fine filter plate 3 will also cause the fine filter plate 3 to vibrate accordingly, so as to separate sludge and sewage.

[0041] While vibrating, the sludge on the coarse filter plate 2 will be discharged through the first row of sludge plates 16, and the sludge inside the fine filter plate 3 will be discharged through the second row of sludge plates 17. The separated water will flow into the interior of the housing 1 through the holes of the coarse filter plate 2 and the fine filter plate 3, and will be guided by the guide plate 18 so that the water will be discharged into the interior of the housing 1 through the drain pipe 19.

[0042] During equipment operation, the pump 26 located on the top wall of the base plate 25 plays a crucial role. After the pump 26 is started, it connects to external water pipes, etc., through the first connecting pipe 27 fixedly connected to its input end to draw the liquid required for spraying. After the drawn liquid enters the pump 26, it is divided through the triple pipe 28 fixedly connected to its output end. The triple pipe 28 transports part of the liquid upward through the conveying pipe 29 fixedly connected to its top, and transports the other part of the liquid directly to the front-end pipe.

[0043] The delivery pipe 29 conveys a portion of the liquid from the pump 26 upwards into the first fixed box 23. Within the first fixed box 23, first spray pipes 31 are fixedly connected to both the front and rear sides, and these first spray pipes 31 are interconnected via second connecting pipes 30, forming a complete spray pipe network. When the liquid reaches the rear first spray pipe 31 through the delivery pipe 29, it flows inside the pipe and is sprayed out through first nozzles 32, which are connected to the inner walls of the first spray pipe 31 and the second connecting pipe 30. These first nozzles 32 are evenly distributed on the inner walls of the first spray pipe 31 and the second connecting pipe 30, enabling the liquid to be sprayed onto the target at a specific pressure and angle.

[0044] Simultaneously, the triplet 28 delivers another portion of the liquid to the second fixed box 24. Four interconnected second spray pipes 33 are fixedly connected inside the second fixed box 24. The rear sidewall of the second spray pipes 33 is connected to the outer front end of the triplet 28, allowing the liquid to smoothly enter the second spray pipes 33. The liquid entering the second spray pipes 33 is then sprayed out through second nozzles 34 fixedly connected to their inner walls. These second nozzles 34 are also evenly distributed on the inner walls of the second spray pipes 33, spraying the liquid at appropriate pressure and angle to spray the bottom and pores of the fine filter plate 3, preventing impurities from remaining in the gaps.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving sludge dewatering device comprising a box (1), characterized in that: The inside of the box (1) is provided with a coarse filter plate (2), the bottom of the coarse filter plate (2) is provided with a fine filter plate (3), the front and rear walls of the coarse filter plate (2) are both fixedly connected with a first connecting block (4), the inside top of the box (1) is fixedly connected with a supporting block (5), the right side wall of each first connecting block (4) and supporting block (5) is fixedly connected with a first spring piece (6), the front and rear walls of the coarse filter plate (2) and fine filter plate (3) are both fixedly connected with a second connecting block (7), the right side walls of two upper and lower second connecting blocks (7) are fixedly connected with a second spring piece (8), the right front and rear sides of the fine filter plate (3) are both fixedly connected with a semicircle block (9), the inside of two semicircle blocks (9) is provided with a connecting rod (10), the top of the left side wall of the coarse filter plate (2) is fixedly connected with a protection box (11), the inside of the protection box (11) is provided with a bidirectional motor (12), the front and rear output ends of the bidirectional motor (12) are both fixedly connected with a rotating rod (13), the other ends of two rotating rods (13) are both fixedly connected with an eccentric wheel (14), the outer sides of two eccentric wheels (14) are both rotatably connected with a supporting rod (15).

2. The energy-saving sludge dewatering device according to claim 1, characterized in that: The other sides of two supporting rods (15) are rotatably connected to the front and rear ends of the eccentric wheel (14), the left side wall of the coarse filter plate (2) is fixedly connected with a first mud discharging plate (16), the first mud discharging plate (16) penetrates the left side wall of the box (1), the left side wall of the fine filter plate (3) is fixedly connected with a second mud discharging plate (17), the second mud discharging plate (17) penetrates the left side wall of the box (1), and the second mud discharging plate (17) is arranged at the bottom of the first mud discharging plate (16).

3. The energy-saving sludge dewatering device according to claim 1, characterized in that: The inside bottom wall of the box (1) is fixedly connected with a flow guide plate (18), the right side wall of the box (1) is fixedly connected with a drain pipe (19), the top of the box (1) is fixedly connected with a feeding box (20), the inside top wall of the box (1) is fixedly connected with a guide box (21), the guide box (21) is arranged in the inside of the feeding box (20), and the bottom wall of the box (1) is fixedly connected with a base (22).

4. The energy-saving sludge dewatering device according to claim 2, characterized in that: The outside top of the box (1) is fixedly connected with a first fixed box (23), the outside bottom of the box (1) is fixedly connected with a second fixed box (24), the back wall of the box (1) is fixedly connected with a bottom plate (25), and the top wall of the bottom plate (25) is provided with a pump (26).

5. The energy-saving sludge dewatering device according to claim 4, characterized in that: The input end of the pump (26) is fixedly connected with a first connecting pipe (27), the output end of the pump (26) is fixedly connected with a triplex pipe (28), and the top end of the triplex pipe (28) is fixedly connected with a conveying pipe (29).

6. The energy-saving sludge dewatering device according to claim 4, characterized in that: The interior of the first fixed box (23) is fixedly connected with first spray pipes (31) on both sides, and the interior of the first fixed box (23) is fixedly connected with second connecting pipes (30) on both sides, the two first spray pipes (31) and the second connecting pipes (30) are connected in communication, the rear side wall of the rear first spray pipe (31) is connected in communication with the top end of the conveying pipe (29), and the inner walls of the first spray pipe (31) and the second connecting pipe (30) are both connected in communication with first spray heads (32).

7. The energy-saving sludge dewatering device according to claim 4, characterized in that: The interior of the second fixed box (24) is fixedly connected with second spray pipes (33), the four second spray pipes (33) are connected in communication, the rear side wall of the rear second spray pipe (33) is connected in communication with the front end outside of the three-way pipe (28), and the inner walls of the four second spray pipes (33) are fixedly connected with second spray heads (34).

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