A municipal sludge treatment device based on intelligent collaborative processing

Abstract

The present invention proposes a municipal sludge treatment device based on intelligent collaborative processing, which relates to the field of sludge treatment technology, including: a treatment tank and a turntable arranged inside the treatment tank, and also includes a centrifugal filter assembly arranged inside the turntable. The present invention provides a turntable and a centrifugal filter assembly inside the treatment tank, a multi-layer filter screen design, and the external, central and internal filter screens work together, cooperate with the scraper, and use centrifugal force to achieve graded centrifugal filtration. The connecting frame drives the scraper and filter screen to move. When descending, the second scraper pushes the sludge inside the central filter screen, the first scraper allows the sludge to enter the external filter screen, and the third scraper guides the sludge into the internal filter screen; when rising, the third scraper pushes the sludge into the central filter screen, and the first scraper throws out the sludge inside the external filter screen, ensuring that different filtration stages do not interfere with each other, greatly improving the sludge treatment efficiency, and the centrifugal force of the three-layer filter screen increases continuously from the inside to the outside, and the filtration effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular to a municipal sludge treatment device based on intelligent collaborative processing. Background Art

[0002] With the acceleration of urbanization, the amount of municipal sludge generated has increased dramatically. If municipal sludge is not handled properly, it will not only occupy a large amount of land, but also cause serious pollution to the soil, water and atmosphere, threatening the ecological environment and human health. Therefore, the development of efficient and intelligent municipal sludge treatment technology and equipment is of great practical significance for achieving sludge reduction, harmlessness and resource utilization.

[0003] Existing technologies use equipment such as vacuum filters, plate and frame filter presses, roller dewatering machines, belt filter presses and centrifugal dewatering machines for sludge dewatering. Vacuum filters have a large processing capacity and are suitable for dewatering various sludges; plate and frame filter presses can process various sludges but have a smaller processing capacity; roller dewatering machines are used to dewater residual activated sludge, paper industry sludge, etc.; belt filter presses can process chemical sludge and other sludge that are difficult to dewater by vacuum filtration; commonly used sludge treatment equipment requires high costs, both in terms of initial infrastructure investment and subsequent operation and maintenance. This not only greatly increases the cost of sludge treatment, but also brings a heavy economic burden to related enterprises and departments, limiting the large-scale application of these equipment. These equipment are generally complex in structure and bulky in size, and have strict requirements on the space and supporting facilities of the installation site. As a result, many difficulties are often faced when arranging equipment at the sludge treatment site, which greatly affects the timeliness and efficiency of sludge treatment work. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a municipal sludge treatment device based on intelligent collaborative processing.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is a municipal sludge treatment device based on intelligent collaborative treatment, comprising a treatment tank and a turntable arranged inside the treatment tank, and also comprising a centrifugal filter assembly arranged inside the turntable, the turntable is rotatably arranged at the lower part of the treatment tank, the centrifugal filter assembly comprises an external filter screen, a middle filter screen and an internal filter screen which are arranged inside the turntable from the outside to the inside, the lower part of the external filter screen and the upper part of the internal filter screen are at the same horizontal height, wherein the outer upper edge of the external filter screen is fixedly connected to the upper part of the inner wall of the turntable by a fixing ring, the internal filter screen is fixedly installed on the bottom inner wall of the turntable, a second scraper is fixedly installed above the outer side of the internal filter screen, a first scraper is fixedly installed above the outer side of the middle filter screen, the middle filter screen and the first scraper are slidably arranged between the external filter screen and the second scraper, and a third scraper is slidably arranged in the middle of the internal filter screen, the first scraper is used to scrape the inner wall of the external filter screen upwards, the second scraper is used to scrape the inner wall of the middle filter screen upwards, and the third scraper is used to The sludge pipe is provided inside the treatment tank for scraping the inner wall of the built-in filter upwards. The sludge pipe extends from the top of the treatment tank to the inside thereof. The bottom of the sludge pipe is located in the middle of the built-in filter, and the outer wall of the sludge pipe is fitted with the third scraper. A sludge outlet is provided at the lower outer side of the sludge pipe. The centrifugal filter assembly also includes a connecting frame movably arranged inside the treatment tank. The connecting frame is used to connect the middle filter and the third scraper. After the connecting frame drives the middle filter, the first scraper and the third scraper to descend, the second scraper will move the middle filter The sludge on the inside of the filter is pushed upward. As the first scraper descends, the sludge enters the inner wall of the external filter under the action of centrifugal force for centrifugal filtration. After the third scraper on the inside of the built-in filter descends, the sludge enters the inside of the built-in filter through the sludge pipe for centrifugal filtration. When the connecting frame drives the middle filter, the first scraper and the third scraper to rise, the third scraper pushes the sludge upward and enters the inside of the middle filter under the action of centrifugal force. The sludge on the inside of the external filter is thrown out under the upward push of the first scraper.

[0006] Furthermore, a liquid inlet is provided on the top of the treatment tank, and the liquid inlet is rotatably provided on the top of the sludge pipe. The liquid inlet is used to connect the sludge conveying pipe. A liquid outlet is provided at the bottom of the treatment tank. The liquid outlet is located at one end inside the treatment tank and a water receiving tray is installed. The water receiving tray is located below the turntable. A drainage hole is provided at the bottom of the turntable. The water filtered by the external filter screen, the central filter screen and the internal filter screen passes through the drainage hole and the water receiving tray and is finally discharged through the liquid outlet. The outer wall of the treatment tank is also provided with a slag outlet and a controller.

[0007] Furthermore, a retaining ring is fixedly provided on the inner wall of the processing tank at the top of the turntable, and a notch is provided on the retaining ring, which corresponds to the slag outlet. There are also evenly distributed paddles on the inner side of the retaining ring, which are embedded and installed on the top of the external filter screen. The paddles fit into the inner wall of the retaining ring, and the sludge pushed out from the inside of the external filter screen by the first scraper eventually enters the inner side of the retaining ring and is discharged from the slag outlet as the paddles rotate.

[0008] Furthermore, a driving assembly is also provided inside the processing tank, and the driving assembly includes a double-headed motor fixedly installed inside the processing tank, a gear is fixedly installed at the output end below the double-headed motor, and the outer wall of the turntable is provided with gear teeth, and the gear is meshed with the turntable through the gear teeth, and the gear is driven to rotate by the double-headed motor and then the turntable is driven to rotate as a whole. The driving assembly also includes a forward and reverse screw transmission mechanism installed at the top output end of the double-headed motor, and a delay transmission cylinder is slidingly provided above the interior of the processing tank, and the delay transmission cylinder is connected to the forward and reverse screw transmission mechanism through a connecting piece, and the delay transmission cylinder is driven to reciprocate up and down inside the processing tank through the cooperation of the double-headed motor and the forward and reverse screw transmission mechanism.

[0009] Furthermore, a limiting groove is provided inside the delay transmission cylinder, and a bearing is movably provided inside the limiting groove. The diameter of the bearing is larger than the diameter of the upper and lower openings of the delay transmission cylinder. Balls are evenly distributed on the outer ring of the bearing, and the bearing contacts the inner wall of the limiting groove through the balls. The connecting frame includes a connecting plate fixedly mounted on the inner ring of the bearing, and the bottom of the connecting plate is fixedly connected to the third scraper and the middle filter screen respectively through the first connecting rod and the second connecting rod. When the double-headed motor drives the turntable to rotate, the double-headed motor drives the delay transmission cylinder to reciprocate up and down through the forward and reverse screw transmission mechanism. When the delay transmission cylinder moves downward, the bearing is It will not move downward at the beginning until the top inner wall of the limit groove contacts the bearing, then it will drive the bearing to move downward, and then drive the connecting frame to move downward. Then, when the delayed transmission cylinder moves upward, the bearing will not move upward immediately until the bottom inner wall of the limit groove contacts the bottom of the bearing, then it will drive the bearing and the connecting frame to move downward, which is convenient for controlling the external filter, the middle filter and the internal filter to perform graded centrifugal filtration. Specifically, when the middle filter is filtering sludge, there is no sludge on the inside of the external filter and the internal filter, and there is no sludge on the inside of the middle filter when the external filter and the internal filter are filtering.

[0010] Compared with the prior art, the beneficial effects of the present invention include: a turntable and a centrifugal filter assembly are set in the treatment tank, a multi-layer filter screen design, and the external, central and internal filter screens work together, and cooperate with the scraper to achieve graded centrifugal filtration using centrifugal force. The connecting frame drives the scraper and filter screen to move. When descending, the second scraper pushes the sludge inside the central filter screen, the first scraper allows the sludge to enter the external filter screen, and the third scraper guides the sludge into the internal filter screen; when ascending, the third scraper pushes the sludge into the central filter screen, and the first scraper throws out the sludge inside the external filter screen, ensuring that different filtration stages do not interfere with each other, greatly improving the sludge treatment efficiency, and the centrifugal force of the three-layer filter screen increases continuously from the inside to the outside, and the filtering effect is good; the double-headed motor, gears, forward and reverse screw transmission mechanism, and delayed transmission cylinder in the drive assembly work together to accurately control the up and down movement of the connecting frame to achieve intelligent control of graded filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0012] Figure 1 Schematically shows the overall structural diagram of a municipal sludge treatment device based on intelligent collaborative processing proposed according to one embodiment of the present invention;

[0013] Figure 2 Schematically showing the structure of a turntable, a drive assembly and a delayed transmission cylinder of a municipal sludge treatment device based on intelligent collaborative processing according to one embodiment of the present invention;

[0014] Figure 3 A schematic diagram showing the structure of a turntable and centrifugal filter assembly of a municipal sludge treatment device based on intelligent collaborative processing according to one embodiment of the present invention is shown;

[0015] Figure 4 A schematic diagram showing a centrifugal filter assembly and a sludge pipe structure section diagram of a municipal sludge treatment device based on intelligent collaborative processing according to one embodiment of the present invention is shown;

[0016] Figure 5 Schematically shows a schematic diagram of a drive assembly and a bearing structure of a municipal sludge treatment device based on intelligent collaborative processing according to one embodiment of the present invention;

[0017] Figure 6 A schematic diagram shows a disassembled view of a drive assembly, a delayed transmission cylinder and a bearing structure of a municipal sludge treatment device based on intelligent collaborative processing proposed according to one embodiment of the present invention.

[0018] In the figure: 1. treatment tank; 11. liquid inlet; 12. liquid outlet; 13. slag outlet; 14. controller; 2. turntable; 21. gear; 22. retaining ring; 23. dial plate; 3. centrifugal filter assembly; 31. external filter; 311. fixing ring; 32. center filter; 321. first scraper; 33. internal filter; 331. second scraper; 332. third scraper; 34. connecting frame; 341. connecting plate; 342. first connecting rod; 343. second connecting rod; 4. sludge pipe; 5. drive assembly; 51. double-headed motor; 52. gear; 53. forward and reverse screw transmission mechanism; 54. connector; 6. delay transmission cylinder; 61. limit groove; 7. bearing; 71. ball. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] According to the embodiment of the present invention, Figures 1-6A municipal sludge treatment device based on intelligent collaborative processing includes a treatment tank 1 and a turntable 2 arranged inside the treatment tank 1, and also includes a centrifugal filter assembly 3 arranged inside the turntable 2. The turntable 2 is rotatably arranged at the lower part of the treatment tank 1. The centrifugal filter assembly 3 includes an external filter screen 31, a middle filter screen 32 and an internal filter screen 33 arranged inside the turntable 2 from the outside to the inside. The lower part of the external filter screen 31 and the upper part of the internal filter screen 33 are at the same horizontal height, wherein the outer upper edge of the external filter screen 31 is fixedly connected to the upper part of the inner wall of the turntable 2 by a fixing ring 311, and the internal filter screen 33 is fixedly connected to the upper part of the inner wall of the turntable 2 by a fixing ring 311. The net 33 is fixedly mounted on the bottom inner wall of the turntable 2, a second scraper 331 is fixedly mounted on the upper outer side of the built-in filter 33, a first scraper 321 is fixedly mounted on the upper outer side of the middle filter 32, the middle filter 32 and the first scraper 321 are slidably arranged between the external filter 31 and the second scraper 331, a third scraper 332 is slidably arranged in the middle of the built-in filter 33, the first scraper 321 is used to scrape the inner wall of the external filter 31 upwards, the second scraper 331 is used to scrape the inner wall of the middle filter 32 upwards, and the third scraper 332 is used to scrape the inner wall of the built-in filter 33 upwards The sludge pipe 4 is rotatably provided inside the treatment tank 1. The sludge pipe 4 extends from the top of the treatment tank 1 to the inside thereof. The bottom of the sludge pipe 4 is located in the middle of the built-in filter screen 33, and the outer wall of the sludge pipe 4 is in contact with the third scraper 332. A sludge outlet is provided at the lower outer side of the sludge pipe 4. The centrifugal filter assembly 3 also includes a connecting frame 34 movably provided inside the treatment tank 1. The connecting frame 34 is used to connect the middle filter screen 32 and the third scraper 332. After the connecting frame 34 drives the middle filter screen 32, the first scraper 321 and the third scraper 332 to descend, the second scraper 331 will move the inner side of the middle filter screen 32 The sludge is pushed upward. As the first scraper 321 descends, the sludge enters the inner wall of the external filter 31 under the action of centrifugal force for centrifugal filtration. After the third scraper 332 inside the built-in filter 33 descends, the sludge enters the inner wall of the built-in filter 33 through the sludge pipe 4 for centrifugal filtration. When the connecting frame 34 drives the middle filter 32, the first scraper 321 and the third scraper 332 to rise, the third scraper 332 pushes the sludge upward and enters the inner wall of the middle filter 32 under the action of centrifugal force. The sludge inside the external filter 31 is thrown out outward under the upward push of the first scraper 321.

[0021] A liquid inlet 11 is provided at the top of the treatment tank 1, and the liquid inlet 11 is rotatably provided at the top of the sludge pipe 4. The liquid inlet 11 is used to connect the sludge conveying pipe. A liquid outlet 12 is provided at the bottom of the treatment tank 1. The liquid outlet 12 is located at one end inside the treatment tank 1 and is equipped with a water receiving tray. The water receiving tray is located below the turntable 2. A drainage hole is provided at the bottom of the turntable 2. The water filtered by the external filter 31, the central filter 32 and the built-in filter 33 passes through the drainage hole and the water receiving tray and is finally discharged through the liquid outlet 12. The outer wall of the treatment tank 1 is also provided with a slag outlet 13 and a controller 14.

[0022] The inner wall of the processing tank 1 is located at the top of the turntable 2 and is fixedly provided with a retaining ring 22. A notch is provided on the retaining ring 22, which corresponds to the slag outlet 13. There are also evenly distributed paddles 23 on the inner side of the retaining ring 22. The paddles 23 are embedded in the top of the external filter screen 31. The paddles 23 fit the inner wall of the retaining ring 22. The sludge pushed out from the inside of the external filter screen 31 by the first scraper 321 eventually enters the inner side of the retaining ring 22 and is discharged from the slag outlet 13 as the paddles 23 rotate.

[0023] A driving assembly 5 is also provided inside the processing tank 1, and the driving assembly 5 includes a double-headed motor 51 fixedly installed inside the processing tank 1, and a gear 52 is fixedly installed at the output end below the double-headed motor 51, and the outer wall of the turntable 2 is provided with gear teeth 21. The gear 52 is meshed with the turntable 2 through the gear teeth 21, and the gear 52 is driven to rotate by the double-headed motor 51, thereby driving the turntable 2 to rotate as a whole. The driving assembly 5 also includes a forward and reverse screw transmission mechanism 53 installed at the top output end of the double-headed motor 51, and a delay transmission cylinder 6 is slidingly provided on the upper part of the interior of the processing tank 1. The delay transmission cylinder 6 is connected to the forward and reverse screw transmission mechanism 53 through a connecting piece 54, and the delay transmission cylinder 6 is driven to reciprocate up and down inside the processing tank 1 through the cooperation of the double-headed motor 51 and the forward and reverse screw transmission mechanism 53.

[0024] A limiting groove 61 is provided inside the delay transmission cylinder 6, and a bearing 7 is movably provided on the inner side of the limiting groove 61. The diameter of the bearing 7 is larger than the diameter of the upper and lower openings of the delay transmission cylinder 6. Balls 71 are evenly distributed on the outer ring of the bearing 7. The bearing 7 contacts the inner wall of the limiting groove 61 through the balls 71. The connecting frame 34 includes a connecting plate 341 fixedly mounted on the inner ring of the bearing 7. The bottom of the connecting plate 341 is fixedly connected to the third scraper 332 and the middle filter screen 32 through the first connecting rod 342 and the second connecting rod 343 respectively. When the double-headed motor 51 drives the turntable 2 to rotate, the double-headed motor 51 drives the delay transmission cylinder 6 to reciprocate up and down through the forward and reverse screw transmission mechanism 53. When the delay transmission cylinder 6 moves downward, The middle bearing 7 will not move downward at the beginning, and will not move downward until the top inner wall of the limiting groove 61 contacts the bearing 7, thereby driving the bearing 7 to move downward, and then driving the connecting frame 34 to move downward. Then, when the delayed transmission cylinder 6 moves upward, the bearing 7 will not move upward immediately, and will not move upward until the bottom inner wall of the limiting groove 61 contacts the bottom of the bearing 7, thereby driving the bearing 7 and the connecting frame 34 to move downward, so as to facilitate the control of the external filter 31, the middle filter 32 and the internal filter 33 to perform graded centrifugal filtration. Specifically, when the middle filter 32 performs sludge filtering, there is no sludge on the inside of the external filter 31 and the internal filter 33, and there is no sludge on the inside of the middle filter 32 when the external filter 31 and the internal filter 33 are filtering.

[0025] Working principle:

[0026] Municipal sludge enters the treatment device through a sludge delivery pipe connected to the liquid inlet 11. The liquid inlet 11 is rotatably arranged on the top of the sludge pipe 4, and the sludge enters the interior of the device through the sludge pipe 4;

[0027] In the drive assembly 5 inside the processing tank 1, the gear 52 at the output end of the double-headed motor 51 engages with the gear teeth 21 on the outer wall of the turntable 2; the double-headed motor 51 is started, driving the gear 52 to rotate, thereby causing the turntable 2 to rotate at the bottom of the processing tank 1;

[0028] The double-headed motor 51 drives the forward and reverse screw drive mechanism 53 to operate, causing the delay drive cylinder 6 to reciprocate up and down. When the delay drive cylinder 6 moves downward, the bearing 7 does not move at first until the inner wall of the top of the limit groove 61 contacts the bearing 7, driving the connecting frame 34 to descend. The connecting frame 34 drives the central filter 32, the first scraper 321, and the third scraper 332 to descend. At this time, the second scraper 331 pushes the sludge inside the central filter 32 upward. As the first scraper 321 descends, the sludge enters the inner wall of the external filter 31 under the action of centrifugal force for centrifugal filtration. After the third scraper 332 inside the internal filter 33 descends, the sludge enters the internal filter 33 through the sludge outlet on the sludge pipe 4 for centrifugal filtration.

[0029] When the delayed transmission cylinder 6 moves upward, the bearing 7 does not rise immediately until the inner wall of the bottom of the limiting groove 61 contacts the bottom of the bearing 7, driving the connecting frame 34 to rise. At this time, the third scraper 332 pushes the sludge upward, and under the action of centrifugal force, it enters the inner side of the middle filter 32. The sludge inside the external filter 31 is thrown outward under the upward push of the first scraper 321. Through this rising and falling process, the external filter 31, the middle filter 32 and the internal filter 33 are subjected to graded centrifugal filtration, ensuring that when one filter is filtering, there is no sludge interference inside the other two filters.

[0030] The water filtered by the external filter 31, the middle filter 32 and the internal filter 33 enters the water receiving tray below through the drainage hole at the bottom of the turntable 2, and is finally discharged through the liquid outlet 12 at the bottom of the treatment tank 1;

[0031] The sludge pushed out from the inner side of the external filter 31 by the first scraper 321 enters the inner side of the retaining ring 22. The paddle 23 on the retaining ring 22 rotates with the turntable 2 to discharge the sludge from the slag outlet 13.

[0032] The entire treatment process can be controlled by the controller 14 on the outer wall of the treatment tank 1 to adjust parameters such as motor speed and component movement to meet different sludge treatment requirements.

[0033] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A municipal sludge treatment device based on intelligent collaborative processing, characterized in that: The invention comprises a processing tank and a turntable arranged inside the processing tank, and also comprises a centrifugal filter assembly arranged inside the turntable, wherein the turntable is rotatably arranged at the lower part of the processing tank, and the centrifugal filter assembly comprises an external filter screen, a middle filter screen and an internal filter screen arranged inside the turntable from the outside to the inside, the lower part of the external filter screen and the upper part of the internal filter screen are at the same horizontal height, wherein the outer upper edge of the external filter screen is fixedly connected to the upper part of the inner wall of the turntable through a fixing ring, and the internal filter screen is fixedly installed on the bottom inner wall of the turntable, a second scraper is fixedly installed on the upper part of the outer side of the internal filter screen, a first scraper is fixedly installed on the upper part of the outer side of the middle filter screen, and the middle filter screen and The first scraper is slidably arranged between the external filter and the second scraper, and the third scraper is slidably arranged in the middle of the built-in filter, the first scraper is used to scrape the inner wall of the external filter upward, the second scraper is used to scrape the inner wall of the central filter upward, and the third scraper is used to scrape the inner wall of the built-in filter upward. A sludge pipe is rotatably arranged inside the processing tank, and the sludge pipe extends from the top of the processing tank to the inside thereof. The bottom of the sludge pipe is located in the middle of the built-in filter, and the outer wall of the sludge pipe is in contact with the third scraper. A sludge outlet is provided at the lower outer side of the sludge pipe. The centrifugal filter assembly also includes a connecting frame movably arranged inside the processing tank, and the connecting frame is used to connect the central filter and the third scraper; The processing tank is further provided with a driving assembly, which includes a double-headed motor fixedly mounted inside the processing tank, a gear fixedly mounted on the output end below the double-headed motor, and gear teeth are provided on the outer wall of the turntable, and the gear is meshed with the turntable through the gear teeth; The drive assembly also includes a forward and reverse screw transmission mechanism installed at the top output end of the double-headed motor, and a delay transmission cylinder is slidably arranged above the interior of the processing tank, and the delay transmission cylinder is connected to the forward and reverse screw transmission mechanism through a connecting piece; A limiting groove is provided inside the delay transmission cylinder, and a bearing is movably provided inside the limiting groove; The connecting frame includes a connecting plate fixedly mounted on the inner ring of the bearing, and the bottom of the connecting plate is fixedly connected to the third scraper and the middle filter screen respectively through a first connecting rod and a second connecting rod.

2. A municipal sludge treatment device based on intelligent collaborative processing according to claim 1, characterized in that: The top of the treatment tank is provided with a liquid inlet, which is rotatably arranged on the top of the sludge pipe and is used to connect to the sludge conveying pipe.

3. The municipal sludge treatment device based on intelligent collaborative processing according to claim 1, characterized in that: The bottom of the processing tank is provided with a liquid outlet, and one end of the liquid outlet inside the processing tank is provided with a water receiving tray, which is located below the turntable. The bottom of the turntable is provided with a drainage hole.

4. The municipal sludge treatment device based on intelligent collaborative processing according to claim 1, characterized in that: The outer wall of the processing tank is also provided with a slag outlet and a controller.

5. A municipal sludge treatment device based on intelligent collaborative processing according to claim 4, characterized in that: The inner wall of the processing tank is located at the top of the turntable and is fixed with a baffle ring. The baffle ring is provided with a notch, which corresponds to the slag outlet. The inner side of the baffle ring is also evenly distributed with paddles, which are embedded and installed on the top of the external filter screen, and the paddles fit the inner wall of the baffle ring.

6. The municipal sludge treatment device based on intelligent collaborative processing according to claim 1, characterized in that: The diameter of the bearing is larger than the diameter of the upper and lower openings of the delay transmission cylinder. Balls are evenly distributed on the outer ring of the bearing, and the bearing contacts the inner wall of the limiting groove through the balls.

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