Automatic sludge treatment device for sewage treatment tank

Abstract

The invention provides an automatic sludge treatment device for a sewage treatment pond, and relates to the technical field of sludge treatment.The automatic sludge treatment device comprises a pond body, the top of the pond body is covered with a top cover, a discharge pipe is fixed to one side of the pond body, a mounting plate is fixed to the surface of the bottom of the top cover through bolts, and a driving assembly is arranged at the bottom of the circle center of the mounting plate; the driving assembly comprises a rotating shaft, two sets of bottom stirring plates are fixed to the surface of the bottom of the rotating shaft, two sets of stirring frames are symmetrically arranged on the surface of the rotating shaft, a separation assembly is arranged on the periphery of the rotating shaft and comprises a bottom ring, a circular notch is formed in the circle center of the bottom ring, and leakage grooves are formed in the surface of the bottom ring at equal intervals; compared with the prior art, under the cooperation of the driving assembly and the suction assembly, the sludge at the bottom of the treatment pond is rotationally stirred and dispersed, meanwhile, the two suction cylinders are matched to extract part of the sludge and then independently stir and disperse the sludge in a small space, and the treatment efficiency and the treatment uniformity are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and particularly to an automatic device for treating sludge in a sewage treatment tank. Background Art

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it. Sewage treatment is widely applied in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people. In sewage treatment, sewage treatment tanks have become important equipment, and their function is to separate sludge, clarify, concentrate, and recycle activated sludge in the mixed liquid.

[0003] When common sewage treatment tanks treat the sludge at the bottom of the tank, generally, a sludge crushing mechanism such as a toothed blade or a blade is used to crush and stir the sludge. This method has a low efficiency of crushing the sludge and cannot efficiently and evenly crush the lumpy sludge. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an automatic device for treating sludge in a sewage treatment tank to solve the problems raised in the above background art. The structure of the present invention is novel. With the cooperation of a driving component and a suction component, while rotating and dispersing the sludge at the bottom of the treatment tank, two suction cylinders are used to extract part of the sludge and then disperse it separately in a small space, improving the treatment efficiency and uniformity.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions: An automatic device for treating sludge in a sewage treatment tank includes a tank body, the top of the tank body is covered with a top cover, a discharge pipe is fixed on one side of the tank body, and a mounting plate is bolted on the bottom surface of the top cover. A driving component is provided at the bottom center of the mounting plate. The driving component includes a rotating shaft, two groups of bottom stirring plates are fixed on the bottom surface of the rotating shaft, and two groups of stirring frames are symmetrically arranged on the surface of the rotating shaft. A separating component is arranged around the rotating shaft. The separating component includes a bottom ring, a circular notch is opened at the center of the bottom ring, and leakage grooves are equidistantly opened on the surface of the bottom ring. A cover plate covers the surface of the leakage groove, and one end of the cover plate is rotatably connected to the outer edge of the bottom ring. A suction component is arranged at the circular notch of the bottom ring. The suction component includes a semi-circular plate, two semi-circular plates are spliced and installed at the bottom of the circular notch of the bottom ring, and a treatment cylinder is slidably installed at the bottom of the semi-circular plate. A bottom plate is arranged at the lower end of the treatment cylinder, and a pressing plate is slidably installed inside the treatment cylinder. A connecting shaft slidably passes through the center of the pressing plate, and the bottom of the connecting shaft is fixed to the bottom plate.

[0006] Further, the driving assembly further includes a driving motor. The mounting plate is fixed with a driving motor at the top of the rotating shaft, and the output end of the driving motor is fixedly connected to the rotating shaft. Two chutes are equidistantly arranged on the surface of the rotating shaft, and a stirring frame is slidably connected inside the chutes.

[0007] Further, a contact plate is fixed to the bottom of the stirring frame, and the contact plate is in pressing contact with the surface of the bottom ring. A moving groove is provided between the two semi-circular plates, and the stirring frame can pass through the moving groove.

[0008] Further, the separating assembly further includes a top ring. The top ring is arranged on the top of the bottom ring, and a plurality of sliding rods are equidistantly fixed between the top ring and the bottom ring. A moving ring is slidably sleeved on the surface of the sliding rod. The bottom of the moving ring is rotatably installed with a connecting rod through a rotating shaft, and the other end of the connecting rod is rotatably connected to the back of the cover plate through a rotating shaft.

[0009] Further, three groups of first electric push rods are equidistantly fixed to the bottom of the mounting plate, and the extending ends of the first electric push rods are fixedly connected to the bottom ring. Three groups of second electric push rods are fixed to the surface of the top ring, and the extending ends of the second electric push rods are fixedly connected to the moving ring.

[0010] Further, the suction assembly further includes a third electric push rod. The third electric push rod is arranged at the bottom of the mounting plate corresponding to the positions of the two semi-circular plates, and the extending end of the third electric push rod is fixedly connected to the top of the semi-circular plate. A rotating ring is rotatably installed on the surface of the mounting plate, and the top of the third electric push rod is fixed on the rotating ring.

[0011] Further, a protruding plate is slidably inserted into the surface of the semi-circular plate. The treatment cylinder is fixedly connected to the protruding plate, and a fourth electric push rod is fixed to the top of the protruding plate. The extending end of the fourth electric push rod is fixedly connected to the connecting shaft.

[0012] Further, a fifth electric push rod is fixed to the inner wall of the top of the treatment cylinder, and the extending end of the fifth electric push rod is fixedly connected to the pressing plate. Water inlet holes are provided on the surface of the pressing plate. A cutter holder is slidably clamped on the surface of the connecting shaft between the pressing plate and the bottom plate, and the bottom of the pressing plate is rotatably connected to the cutter holder. A motor is installed at the connection between the fourth electric push rod and the connecting shaft.

[0013] Further, hollow slots are opened on both sides of the rotating shaft perpendicular to the chutes, and sixth electric push rods are fixed at positions in the hollow slots facing the two treatment cylinders. The extending ends of the sixth electric push rods are fixedly connected to the treatment cylinders.

[0014] Further, a suction pipe is installed on the surface of the protruding plate, and one end of the suction pipe penetrates into the treatment cylinder.

[0015] Advantages of the present invention:

[0016] 1. The present invention drives the rotating shaft to rotate by a driving motor, and the bottom stirring plate stirs the sludge at the bottom of the pool body. When the partition assembly is located at the bottom of the pool body, the stirring frame slides along the slide groove to the bottom, and cooperates with the bottom stirring plate to stir the sludge layer, performs conventional treatment, and disperses large pieces of sludge.

[0017] 2. When the sludge needs to be processed, the first electric push rod drives the bottom ring to rise to the position where the sludge is layered, and the second electric push rod drives the moving ring to descend. The connecting rod drives the cover plate to rotate to cover the leakage groove, and the structure is combined with the semicircular plate to form a circular plate, so as to minimize the impact of the turbidity of the upper water body when the sludge is stirred at the bottom of the pool body. The stirring frame is located between the two cover plates, so it will not affect the rotation of the cover plate. When the bottom ring moves, the sludge can pass through the leakage groove, which is also a disguised stirring and processing of the sludge. The bottom ring can also clean the inner wall of the pool body.

[0018] 3. The treatment cylinder of the needle of the present invention is slidably plugged into the semicircular plate through the extension plate, and the two treatment cylinders can be pushed to move horizontally by the sixth electric push rod on both sides of the rotating shaft. Because when treating sludge, the partition assembly is located at the upper end of the semicircular plate, the extension plate can slide out at this time without movement interference. The positions of the two treatment cylinders are changed by the sixth electric push rod, and then in conjunction with the rotation of the rotating shaft, the treatment cylinder can extract sludge from multiple positions at the bottom of the pool body and treat it separately. The semicircular plate can be driven to move upward by the third electric push rod, thereby moving the treatment cylinder away from the bottom of the pool body, making it convenient for subsequent conventional stirring work of the bottom of the pool body by relying on the stirring frame and the bottom stirring plate.

[0019] 4. In the process of the fourth electric push rod driving the connecting shaft to be retracted, the bottom plate moves upward, and at the same time, the fifth electric push rod drives the pressure plate to move upward. The sludge is pushed by the bottom plate into the interior of the treatment barrel, and then the sludge inside the treatment barrel is separately broken up relative to the sludge in the pool body through the rotation of the cutting rack, which is more efficient and has a better breaking up effect. Then the fifth electric push rod drives the pressure plate to move downward, compressing the space inside the treatment barrel, dehydrating the sludge, and flowing it into the upper layer of the treatment barrel through the water inlet hole of the pressure plate. The water after the sludge is dehydrated is sent to the upper layer of the partition assembly through the cooperation of a small suction pump and a suction pipe.

[0020] 5. Compared with the existing technology, the present invention uses the cooperation of the driving component and the suction component to rotate and disperse the sludge at the bottom of the treatment pool, and cooperates with two suction cylinders to extract part of the sludge and disperse it separately in a small space, thereby improving the treatment efficiency and treatment uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall internal structure of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0022] Figure 2 Schematic diagram of the bottom structure of the mounting plate of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0023] Figure 3 Schematic diagram of the structure of the partition assembly of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0024] Figure 4 Schematic diagram of the connection between the drive assembly and the suction assembly of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0025] Figure 5 Schematic diagram of the bottom structure of the suction assembly of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0026] Figure 6 Schematic diagram of the connection between the treatment cylinder and the rotating shaft of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0027] Figure 7 Schematic diagram of the top structure of the semi-circular plate of an automatic device for treating sludge in a sewage treatment tank according to the present invention;

[0028] Figure 8 Schematic diagram of the internal structure of the treatment cylinder of an automatic device for treating sludge in a sewage treatment tank according to the present invention.

[0029] In the figure: 1, pool body; 11, top cover; 12, discharge pipe; 13, mounting plate; 14, rotating ring; 2, partition assembly; 21, bottom ring; 22, leakage groove; 23, cover plate; 24, connecting rod; 25, moving ring; 26, first electric push rod; 27, top ring; 28, sliding rod; 29, second electric push rod; 3, suction assembly; 31, semi-circular plate; 32, moving groove; 33, third electric push rod; 34, treatment cylinder; 35, fourth electric push rod; 36, bottom plate; 37, cutter holder; 38, extending plate; 39, suction pipe; 310, connecting shaft; 311, fifth electric push rod; 312, pressing plate; 313, sixth electric push rod; 314, hollow groove; 4, drive assembly; 41, drive motor; 42, rotating shaft; 43, bottom stirring plate; 44, sliding groove; 45, stirring frame; 46, contact plate. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] Please refer to Figures 1 to 8, the present invention provides a technical solution: an automatic device for treating sludge in a sewage treatment tank, including a tank body 1, the top of the tank body 1 is covered with a top cover 11, one side of the tank body 1 is fixed with a discharge pipe 12, and a mounting plate 13 is bolted to the bottom surface of the top cover 11. A driving component 4 is provided at the bottom center of the mounting plate 13. The driving component 4 includes a rotating shaft 42. Two groups of bottom stirring plates 43 are fixed on the bottom surface of the rotating shaft 42, and two groups of stirring frames 45 are symmetrically arranged on the surface of the rotating shaft 42. A separating component 2 is arranged around the rotating shaft 42. The separating component 2 includes a bottom ring 21. A circular notch is opened at the center of the bottom ring 21, and leakage grooves 22 are equidistantly opened on the surface of the bottom ring 21. A cover plate 23 covers the surface of the leakage grooves 22, and one end of the cover plate 23 is rotatably connected to the outer edge of the bottom ring 21. A suction component 3 is arranged at the circular notch of the bottom ring 21. The suction component 3 includes a semi-circular plate 31. Two semi-circular plates 31 are spliced and installed at the bottom of the circular notch of the bottom ring 21, and a treatment cylinder 34 is slidably installed at the bottom of the semi-circular plate 31. A bottom plate 36 is arranged at the lower end of the treatment cylinder 34, and a pressing plate 312 is slidably installed inside the treatment cylinder 34. A connecting shaft 310 slidably passes through the center of the pressing plate 312, and the bottom of the connecting shaft 310 is fixedly connected to the bottom plate 36. When using the device, the driving component 4, the separating component 2, and the suction component 3 in this device are all installed on the mounting plate 13 and can be directly disassembled when not in use. The driving component 4 is used to initially disperse the sludge layer at the bottom of the tank body 1, the separating component 2 is used to layer the sludge and the water layer, and the suction component 3 is used to independently suck and disperse the sludge layer, improving the efficiency of treating large pieces of sludge.

[0032] In this embodiment, the driving component 4 further includes a driving motor 41. A driving motor 41 is fixed at the top of the mounting plate 13 where the rotating shaft 42 is located, and the output end of the driving motor 41 is fixedly connected to the rotating shaft 42. Two sliding grooves 44 are equidistantly opened on the surface of the rotating shaft 42, and a stirring frame 45 is slidably connected inside the sliding grooves 44. A contact plate 46 is fixed at the bottom of the stirring frame 45, and the contact plate 46 is in pressing contact with the surface of the bottom ring 21. A moving groove 32 is arranged between the two semi-circular plates 31, and the stirring frame 45 can pass through the moving groove 32. The driving motor 41 drives the rotating shaft 42 to rotate, and the bottom stirring plates 43 stir the sludge at the bottom of the tank body 1. When the separating component 2 is located at the bottom of the tank body 1, the stirring frame 45 slides along the sliding groove 44 to the bottommost position and cooperates with the bottom stirring plates 43 to stir the sludge layer together for conventional treatment to disperse large pieces of sludge.

[0033] In this embodiment, the partition assembly 2 further includes a top ring 27, a top ring 27 is provided on the top of the bottom ring 21, and a plurality of slide rods 28 are fixed equidistantly between the top ring 27 and the bottom ring 21, and a movable ring 25 is slidably sleeved on the surface of the slide rod 28, and a connecting rod 24 is rotatably installed on the bottom of the movable ring 25 through a rotating shaft, and the other end of the connecting rod 24 is rotatably connected to the back of the cover plate 23 through a rotating shaft, three groups of first electric push rods 26 are equidistantly fixed on the bottom of the mounting plate 13, and the extended end of the first electric push rod 26 is fixedly connected to the bottom ring 21, three groups of second electric push rods 29 are fixed on the surface of the top ring 27, and the extended end of the second electric push rod 29 is fixedly connected to the movable ring 25, and the partition assembly 2 When located at the bottom of the pool body 1, the cover 23 is in a vertically open state. When sludge needs to be processed, the first electric push rod 26 drives the bottom ring 21 to rise to the position where the sludge is layered, and the second electric push rod 29 drives the moving ring 25 to descend. The connecting rod 24 pushes the cover 23 to rotate to cover the leakage groove 22, and is combined with the semicircular plate 31 to form a circular plate structure, so as to minimize the impact of the turbidity of the upper water body when the silt is stirred at the bottom of the pool body 1. The stirring frame 45 is located between the two cover plates 23, so it will not affect the rotation of the cover plate 23. When the bottom ring 21 moves, the silt can pass through the leakage groove 22, which is also a disguised stirring treatment of the silt. The bottom ring 21 can also clean the inner wall of the pool body 1.

[0034] In this embodiment, the suction assembly 3 also includes a third electric push rod 33. The third electric push rod 33 is provided at the position corresponding to the two semicircular plates 31 at the bottom of the mounting plate 13, and the extended end of the third electric push rod 33 is fixedly connected to the top of the semicircular plate 31. A rotating ring 14 is rotatably installed on the surface of the mounting plate 13, and the top of the third electric push rod 33 is fixed on the rotating ring 14. An extension plate 38 is slidably inserted on the surface of the semicircular plate 31. The processing cylinder 34 is fixedly connected to the extension plate 38, and a fourth electric push rod 33 is fixed on the top of the extension plate 38. The fourth electric push rod 35 is fixedly connected to the connecting shaft 310 at its extended end. The rotating shaft 42 is perpendicular to the two sides of the slide groove 44 and has a hollow groove 314. The sixth electric push rod 313 is fixed inside the hollow groove 314 facing the position of the two processing cylinders 34. The extended end of the sixth electric push rod 313 is fixedly connected to the processing cylinder 34. The processing cylinder 34 is slidably plugged into the semicircular plate 31 through the extension plate 38. The six electric push rods 313 on both sides of the rotating shaft 42 can push the two processing cylinders 34 to move horizontally. When silt is removed, the partition assembly 2 is located at the upper end of the semicircular plate 31, so the extension plate 38 can slide out at this time without moving interference. The sixth electric push rod 313 changes the position of the two processing cylinders 34, and then cooperates with the rotation of the rotating shaft 42. The processing cylinder 34 can extract silt from multiple positions at the bottom of the pool body 1 and process it separately. The third electric push rod 33 can drive the semicircular plate 31 to move upward, thereby moving the processing cylinder 34 away from the bottom of the pool body 1, making it convenient for the subsequent conventional stirring work of the bottom of the pool body 1 to be carried out by relying on the stirring frame 45 and the bottom stirring plate 43. When the rotating shaft 42 rotates, the third electric push rod 33 rotates in conjunction with the rotating ring 14. When the processing cylinder 34 moves up and down, the sixth electric push rod 313 slides along the hollow groove 314 to avoid movement interference. The cutter frame 37 and the connecting shaft 310 are commonly slidingly connected. The motor at the bottom end of the fourth electric push rod 35 drives the connecting shaft 310 to rotate, which can drive the cutter frame 37 to rotate. Moreover, the connection between the cutter frame 37 and the pressure plate 312 is also a conventional shaft ring rotation connection, which makes it easy to adjust the position of the cutter frame 37 by adjusting the position of the pressure plate 312.

[0035] In this embodiment, a fifth electric push rod 311 is fixed on the inner wall of the top of the treatment cylinder 34, and the extension end of the fifth electric push rod 311 is fixedly connected to a pressing plate 312. There are water inlet holes on the surface of the pressing plate 312. A cutter holder 37 is slidably clamped on the surface of the connecting shaft 310 between the pressing plate 312 and the bottom plate 36, and the bottom of the pressing plate 312 is rotatably connected to the cutter holder 37. A motor is installed at the connection between the fourth electric push rod 35 and the connecting shaft 310. A suction pipe 39 is installed on the surface of the extending plate 38, and one end of the suction pipe 39 penetrates into the treatment cylinder 34. During the process of the fourth electric push rod 35 driving the connecting shaft 310 to retract, the bottom plate 36 moves upward, and at the same time, the fifth electric push rod 311 drives the pressing plate 312 to move upward. The sludge is pushed by the bottom plate 36 into the treatment cylinder 34. Subsequently, through the rotation of the cutter holder 37, the sludge inside the treatment cylinder 34 is separately dispersed relative to that in the pool body 1, with higher efficiency and better dispersion effect. Then, the fifth electric push rod 311 drives the pressing plate 312 to move downward to compress the space inside the treatment cylinder 34 to dehydrate the sludge. The water flows into the upper layer of the treatment cylinder 34 through the water inlet holes of the pressing plate 312. Through the cooperation of a small suction pump and the suction pipe 39, the water after the sludge is dehydrated is sent to the upper layer of the separation assembly 2.

[0036] When the device is in use, the driving component 4, the partition component 2 and the suction component 3 in the device are all installed on the mounting plate 13, and can be directly disassembled when not in use. The driving motor 41 drives the rotating shaft 42 to rotate, and the bottom stirring plate 43 stirs the sludge at the bottom of the pool body 1. When the partition component 2 is located at the bottom of the pool body 1, the stirring frame 45 slides to the bottom along the slide groove 44, and cooperates with the bottom stirring plate 43 to stir the sludge layer for conventional treatment to break up large pieces of sludge. When the partition component 2 is located at the bottom of the pool body 1, the cover plate 23 is in a vertically open state. When the sludge needs to be processed, the first electric push rod 26 drives the bottom ring 21 to rise to the position where the sludge is layered, and the second electric push rod 29 drives the moving ring 25 to descend. The connecting rod 24 pushes the cover plate 23 to rotate to cover the leakage groove 22, and merges with the semicircular plate 31 to form a circular plate structure, which minimizes the impact of the turbidity of the upper water body when the sludge is stirred at the bottom of the pool body 1. The stirring frame 45 is located between the two cover plates 23, so it will not affect the rotation of the cover plate 23. When the bottom ring 21 moves, the sludge can pass through the leakage groove 22, which also stirs the sludge in disguise. The bottom ring 21 can also clean the inner wall of the pool body 1. The treatment cylinder 34 is slidably plugged into the semicircular plate 31 through the protruding plate 38. The six electric push rods 313 on both sides of the rotating shaft 42 can push the two treatment cylinders 34 to move horizontally. Because when processing sludge, the partition assembly 2 is located at the semicircular plate 31 The upper end, so at this time the extending plate 38 can slide out without movement interference, and the positions of the two processing cylinders 34 are changed by the sixth electric push rod 313. In conjunction with the rotation of the rotating shaft 42, the processing cylinder 34 can extract sludge from multiple positions on the bottom of the pool body 1 and process it separately. The semicircular plate 31 can be driven upward by the third electric push rod 33, thereby moving the processing cylinder 34 away from the bottom of the pool body 1, making it convenient for the subsequent conventional stirring work of the bottom of the pool body 1 to be carried out by relying on the stirring frame 45 and the bottom stirring plate 43. When the rotating shaft 42 rotates, the third electric push rod 33 rotates in conjunction with the swivel 14. When the processing cylinder 34 moves up and down, the sixth electric push rod 313 slides along the hollow groove 314 to avoid movement interference. During the process of the fourth electric push rod 35 driving the connecting shaft 310 to retract, the bottom plate 36 moves upward, and at the same time, the fifth electric push rod 311 drives the pressure plate 312 to move upward. The sludge is pushed by the bottom plate 36 into the inside of the treatment cylinder 34, and then through the rotation of the cutting rack 37, the sludge inside the treatment cylinder 34 is separately broken up relative to the sludge in the pool body 1, which is more efficient and has a better breaking up effect. Then the fifth electric push rod 311 drives the pressure plate 312 to move downward, compressing the space inside the treatment cylinder 34, dehydrating the sludge, and flowing it into the upper layer of the treatment cylinder 34 through the water inlet hole of the pressure plate 312. Through the cooperation of a small suction pump and a suction pipe 39, the water after the sludge is dehydrated is sent to the upper layer of the partition component 2.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic device for treating sludge in a sewage treatment tank, including a tank body (1), characterized in that: The top of the pool body (1) is covered with a top cover (11). One side of the pool body (1) is fixedly provided with a discharge pipe (12). And a mounting plate (13) is bolted to the bottom surface of the top cover (11). At the bottom center of the mounting plate (13), there is a driving assembly (4). The driving assembly (4) includes a rotating shaft (42). On the bottom surface of the rotating shaft (42), two groups of bottom stirring plates (43) are fixed. And on the surface of the rotating shaft (42), two groups of stirring frames (45) are symmetrically arranged. Around the rotating shaft (42), there is a separating assembly (2). The separating assembly (2) includes a bottom ring (21). At the center of the bottom ring (21), there is a circular notch. And on the surface of the bottom ring (21), leakage grooves (22) are equidistantly arranged. On the surface of the leakage grooves (22), there is a cover plate (23). And one end of the cover plate (23) is rotatably connected to the outer edge of the bottom ring (21). At the circular notch of the bottom ring (21), there is a suction assembly (3). The suction assembly (3) includes a semi-circular plate (31). Two semi-circular plates (31) are spliced and installed at the bottom of the circular notch of the bottom ring (21). And at the bottom of the semi-circular plate (31), a treatment cylinder (34) is slidably installed. At the lower end of the treatment cylinder (34), there is a bottom plate (36). And inside the treatment cylinder (34), a pressing plate (312) is slidably installed. At the center of the pressing plate (312), a connecting shaft (310) slidably passes through. And the bottom of the connecting shaft (310) is fixedly connected to the bottom plate (36).

2. The automatic device for treating sludge in a sewage treatment tank according to claim 1, wherein: The driving assembly (4) further includes a driving motor (41). At the top of the rotating shaft (42), the mounting plate (13) is fixedly provided with a driving motor (41). And the output end of the driving motor (41) is fixedly connected to the rotating shaft (42). On the surface of the rotating shaft (42), two sliding grooves (44) are equidistantly arranged. And inside the sliding grooves (44), the stirring frames (45) are slidably connected.

3. The automatic device for treating sludge in a sewage treatment tank according to claim 2, wherein: At the bottom of the stirring frame (45), a contact plate (46) is fixed. And the contact plate (46) is in pressing contact with the surface of the bottom ring (21). Between the two semi-circular plates (31), there is a moving groove (32). And the stirring frame (45) can pass through the moving groove (32).

4. The automatic device for treating sludge in a sewage treatment tank according to claim 1, characterized in that: The separating assembly (2) further includes a top ring (27). At the top of the bottom ring (21), there is a top ring (27). And between the top ring (27) and the bottom ring (21), multiple sliding rods (28) are equidistantly fixed. And on the surface of the sliding rods (28), a moving ring (25) is slidably sleeved. At the bottom of the moving ring (25), a connecting rod (24) is rotatably installed through a rotating shaft. And the other end of the connecting rod (24) is rotatably connected to the back surface of the cover plate (23) through a rotating shaft.

5. The automatic device for treating sludge in a sewage treatment tank according to claim 4, wherein: At the bottom of the mounting plate (13), three groups of first electric push rods (26) are equidistantly fixed. And the extending ends of the first electric push rods (26) are fixedly connected to the bottom ring (21). On the surface of the top ring (27), three groups of second electric push rods (29) are fixedly provided. And the extending ends of the second electric push rods (29) are fixedly connected to the moving ring (25).

6. The automatic device for treating sludge in a sewage treatment tank according to claim 1, characterized in that: The suction assembly (3) further includes a third electric push rod (33). The third electric push rod (33) is provided at the bottom of the mounting plate (13) corresponding to the positions of the two semi-circular plates (31). The extending end of the third electric push rod (33) is fixedly connected to the top of the semi-circular plate (31). A rotating ring (14) is rotatably mounted on the surface of the mounting plate (13), and the top of the third electric push rod (33) is fixed on the rotating ring (14).

7. The automatic device for treating sludge in a sewage treatment tank according to claim 6, wherein: An extending plate (38) is slidably inserted on the surface of the semi-circular plate (31). The treatment cylinder (34) is fixedly connected to the extending plate (38). A fourth electric push rod (35) is fixed to the top of the extending plate (38), and the extending end of the fourth electric push rod (35) is fixedly connected to the connecting shaft (310).

8. The automatic device for treating sludge in a sewage treatment tank according to claim 7, wherein: A fifth electric push rod (311) is fixed to the inner wall of the top of the treatment cylinder (34), and the extending end of the fifth electric push rod (311) is fixedly connected to the pressing plate (312). There are water inlet holes on the surface of the pressing plate (312). A cutter holder (37) is slidably clamped on the surface of the connecting shaft (310) between the pressing plate (312) and the bottom plate (36). The bottom of the pressing plate (312) is rotatably connected to the cutter holder (37). A motor is installed at the connection between the fourth electric push rod (35) and the connecting shaft (310).

9. An automatic device for treating sludge in a sewage treatment tank according to claim 2, characterized in that: Hollow grooves (314) are formed on both sides of the rotating shaft (42) perpendicular to the sliding groove (44). Sixth electric push rods (313) are fixed inside the hollow grooves (314) facing the two treatment cylinders (34). The extending ends of the sixth electric push rods (313) are fixedly connected to the treatment cylinders (34).

10. The automatic device for treating sludge in a sewage treatment tank according to claim 7, characterized in that: A suction pipe (39) is installed on the surface of the extending plate (38), and one end of the suction pipe (39) penetrates into the treatment cylinder (34).

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