Radial-flow sedimentation tank

Abstract

The invention relates to a radial-flow sedimentation tank, which comprises a tank body, a mud scraping plate and a driving member, the mud scraping plate is in an equidistant spiral line shape, the mud scraping plate is rotatably connected to the inner side wall of the tank body, the mud scraping plate abuts against the inner bottom wall of the tank body, the driving member is used for driving the mud scraping plate to rotate, and the driving member drives the mud scraping plate to rotate. And a discharge pipe for discharging sludge is arranged on the bottom wall of the tank body. The sludge treatment device has the effects of reducing sludge sedimentation during movement of the sludge scraping plate and reducing the situation that sludge originally located at the bottom of the tank is blended into sewage again.

Description

Technical Field

[0001] The present application relates to the field of sedimentation tanks, and in particular to a radial flow sedimentation tank. Background Art

[0002] Aluminum is the most widely used metal material among non-ferrous metals, and its application range is constantly expanding. Aluminum alloy materials have a series of excellent physical, chemical, mechanical and processing properties, and are used in various industries from tableware to cutting-edge technology, from construction and decoration to transportation, from energy applications to aerospace. However, some properties of aluminum are not ideal, such as hardness, wear resistance and corrosion resistance. In order to overcome these shortcomings, expand its application range and extend its service life, surface treatment of aluminum alloys is an indispensable process. Anodizing the surface of aluminum materials is a high-quality process for surface treatment and is widely used.

[0003] The process of aluminum anodizing production will produce a large amount of acid, alkali, heavy metals, dyes and pigments. The wastewater includes pre-treatment aging waste liquid, pre-treatment wastewater, anodizing wastewater, coloring dye pigment wastewater, nickel sealing wastewater, etc. The raw wastewater is discharged from the production workshop to the wastewater treatment station without classification. All mixed wastewater is discharged into the comprehensive wastewater collection tank, and then pumped to the treatment system with water pump, and sodium hydroxide is added to neutralize the wastewater to a pH value of 7.0-7.5, and then polyaluminum chloride is added for coagulation, and polyacrylamide is added for flocculation. The wastewater and sludge are separated in the sedimentation tank, and the wastewater is discharged. The sludge is filtered and outsourced for disposal. The sedimentation tank is used to separate the wastewater and sludge.

[0004] At present, the Chinese utility model patent with publication number CN205379698U discloses a radial flow sedimentation tank, including a tank body, a rotating shaft installed in the center of the tank bottom, a linear guide rail and a scraper are arranged on the rotating shaft, and the scraper is used to scrape the sludge at the bottom of the tank body. The top of the tank body is provided with an annular water inlet trough, a buffer trough and a water outlet trough from the outside to the inside, and the outside of the tank body is provided with a water inlet well and a sludge well. The utility model has the effect of quickly and efficiently removing the sludge at the bottom of the tank.

[0005] Since the length direction of the scraper blade is parallel to the radial direction of the pool body, when the scraper blade rotates around the axis of the pool body, the farther the scraper blade is from the axis, the greater its linear speed. The sludge far away from the axis of the pool body is easily mixed into the sewage again under the push of the scraper blade, causing the sedimentation of the sludge to be affected. Summary of the invention

[0006] In order to reduce the impact of the scraper blade on sludge settling when in motion, the present application provides a radial flow sedimentation tank.

[0007] The radial flow sedimentation tank provided in this application adopts the following technical solution: A radial flow sedimentation tank comprises a tank body, a scraper and a driving member, wherein the scraper is in the shape of a spiral line with equal spacing, the scraper is rotatably connected to the inner side wall of the tank body, the scraper abuts against the inner bottom wall of the tank body, the driving member is used to drive the scraper to rotate, and the bottom wall of the tank body is provided with a discharge pipe for discharging sludge.

[0008] By adopting the above technical solution, when the sedimentation tank needs to perform a scraping operation, the driving member drives the scraper plate to rotate. Since the scraper plate is in a spiral shape, the rotating scraper plate moves the center of the sludge on the bottom wall of the tank body until it enters the discharge pipe. Since the spiral line of the scraper plate is equidistant, the scraper plate rotates one circle, and the sludge at various locations on the bottom wall of the tank body moves the same distance. By changing the shape of the scraper plate, the influence of the linear velocity of the auxiliary plate on the sludge in the tank body is reduced, the sludge close to the inner wall of the tank body is reduced from being mixed into the sewage again, and the influence of sludge sedimentation is reduced.

[0009] Optionally, the inner bottom wall of the pool body is conical, a mud discharge groove is provided at the lowest point of the inner bottom wall of the pool body, and the discharge pipe is connected to the mud discharge groove.

[0010] By adopting the above technical scheme, the bottom wall of the pool body is conical. After the scraper blade scrapes off the sludge on the bottom wall of the pool body, the sludge will move toward the lowest point of the pool body under the action of gravity, making it easier for the sludge to move toward the sludge discharge trough under the push of the scraper blade. The sludge entering the sludge discharge trough is no longer affected by the scraper blade, and the sludge in the sludge discharge trough is discharged from the pool body through the discharge pipe, making the structure of the sedimentation tank more reasonable.

[0011] Optionally, the driving member includes a driving motor, a driving ring gear and a driving gear, wherein the driving ring gear is coaxially arranged with the pool body, the driving ring gear is arranged on the scraper, the driving gear is rotatably connected to the pool body, the driving gear is meshed with the driving ring gear, and the driving motor is used to drive the driving gear to rotate.

[0012] By adopting the above technical solution, the driving motor drives the driving gear to rotate, the driving gear drives the driving ring gear to rotate, the driving ring gear drives the scraper to rotate, and the scraper scrapes the sludge on the bottom wall of the pool body. The structure of the driving part is simple and easy for the staff to operate.

[0013] Optionally, an auxiliary component for assisting in mud scraping is provided in the pool body, and the auxiliary component includes a mounting block, an auxiliary plate, a spring, a reciprocating member, a pushing member and a locking member. The mounting block is slidably connected to the pool body along the conical generatrix direction of the conical inner bottom wall of the pool body, the reciprocating member is used to drive the mounting block to reciprocate, and the auxiliary plate is slidably connected to the mounting block along the direction approaching or away from the bottom wall of the pool body. When the mounting block moves in a direction close to the axis of the pool body, the spring is used to keep the auxiliary plate in contact with the bottom wall of the pool body. When the mounting block moves in a direction away from the axis of the pool body, the pushing member is used to keep the auxiliary plate moving away from the bottom wall of the pool body, and the locking member is used to keep the auxiliary plate away from the bottom wall of the pool body.

[0014] By adopting the above technical scheme, when the scraper plate pushes the sludge on the bottom wall of the pool body to move, when the mounting block moves toward the axial direction of the bottom wall of the pool body driven by the reciprocating member, the auxiliary plate remains in contact with the inner bottom wall of the pool body under the action of the spring until the auxiliary plate moves above the sludge discharge groove. At this time, the auxiliary plate overcomes the spring force and moves in the direction away from the bottom wall of the pool body under the action of the pushing member. The locking member keeps the auxiliary plate away from the inner bottom wall of the pool body, and then the reciprocating member drives the mounting block to move in the axial direction away from the bottom wall of the pool body. Relying solely on the scraper plate, the sludge in part of the pool body cannot be completely moved toward the sludge discharge groove. The auxiliary plate is used to limit the circumferential movement of the sludge along the scraper plate, thereby greatly improving the efficiency of sludge removal. The auxiliary plate only moves along the generatrix direction of the inner bottom wall of the pool body, thereby reducing the agitation of the sewage in the pool body and reducing the impact on sewage sedimentation.

[0015] Optionally, the reciprocating member includes a reciprocating screw, a bevel gear ring and a bevel gear. The length direction of the reciprocating screw is parallel to the sliding direction of the mounting block. The reciprocating screw is rotatably connected to the inner wall of the pool body. The mounting block is threadedly connected to the reciprocating screw. The scraper plate is used to rotate and drive the bevel gear ring to rotate. The bevel gear is arranged on the reciprocating screw, and the bevel gear ring is meshed with the bevel gear.

[0016] By adopting the above technical solution, the driving motor drives the driving gear ring to rotate, the driving gear ring drives the scraper blade to rotate, and at the same time drives the bevel gear ring to rotate, the bevel gear ring drives the bevel gear to rotate, the bevel gear drives the reciprocating screw to rotate, and the reciprocating screw drives the mounting block to move along the generatrix direction of the bottom wall of the pool body. The reciprocating part is driven by the driving motor, no additional power source is required, and the auxiliary plate can better adapt to the rotation of the scraper blade.

[0017] Optionally, the auxiliary component further includes a protective cover, which is disposed in the pool body and is used to cover the reciprocating screw rod and the mounting block.

[0018] By adopting the above technical solution, the protective cover covers the reciprocating screw, which can reduce the contact of sludge in the sewage with the reciprocating screw during the sedimentation process and extend the life of the reciprocating screw; since the position of the reciprocating screw relative to the pool body remains unchanged, the protective cover can be directly set in the pool body, and the protective cover has little effect on the sedimentation of sewage in the pool body.

[0019] Optionally, a guiding slope for reducing sediment accumulation is provided at one end of the protective cover facing away from the pool body.

[0020] By adopting the above technical solution, the guiding slope reduces the sedimentation of sludge in the sewage on the surface of the protective cover, and the sludge falls to the inner bottom wall of the tank body under the action of gravity.

[0021] Optionally, the pushing member includes a gear, a rack and a push block, the length direction of the rack is parallel to the sliding direction of the auxiliary plate, the rack is arranged on the auxiliary plate, the gear is rotatably connected to the mounting block, the gear is used to engage with the rack, the push block is arranged in the pool body, and a mating inclined surface is provided on the push block for guiding the auxiliary plate to move away from the bottom wall of the pool body, and the locking member is used to limit the rotation of the gear.

[0022] By adopting the above technical scheme, the driving motor drives the bevel gear ring to rotate, the bevel gear ring drives the bevel gear to rotate, the bevel gear drives the reciprocating screw to rotate, and the reciprocating screw drives the mounting block to move along the length direction of the reciprocating screw. When the mounting block moves toward the axial direction of the bottom wall of the pool body, the auxiliary plate on the mounting block will abut against the inner bottom wall of the pool body until the mounting block is located above the mud discharge groove. At this time, the mounting block will abut against the push block, and the guiding inclined surface on the push block drives the scraper plate to move away from the bottom wall of the pool body. The movement of the scraper plate will drive the rack to slide, and the sliding of the rack will drive the rotation of the gear. The rotation of the gear is limited by the locking piece, so that when the reciprocating screw drives the mounting block to move in the direction away from the axis of the bottom wall of the pool body, the auxiliary plate does not contact the bottom wall of the pool body.

[0023] Optionally, the locking member includes a ratchet, a pawl, a paddle, a locking spring and an unlocking block, the ratchet is coaxially arranged with the gear, the ratchet is arranged on the gear, the pawl is rotatably connected to the mounting block, the locking spring is used to keep the pawl engaged with the ratchet, the paddle is arranged on the pawl, and when the mounting block moves to the end of the reciprocating screw away from the axis of the pool body, the unlocking block is used to abut the paddle plate and drive the paddle plate to rotate.

[0024] By adopting the above technical scheme, when the mounting block moves toward the push block under the drive of the reciprocating screw until it abuts against the matching inclined surface, the rack on the mounting block will drive the gear to rotate, and the gear will drive the ratchet to rotate. The locking spring will cause the pawl to keep the ratchet locked, and the auxiliary plate cannot move toward the bottom wall of the pool body. At this time, the reciprocating screw will drive the mounting block to move away from the axis of the pool body until the unlocking block abuts against the paddle plate, so that the paddle plate overcomes the elastic force of the locking spring to disengage the pawl from the ratchet, and the auxiliary plate abuts against the bottom wall of the pool body under the action of the spring, and the auxiliary scraping operation of the sludge on the bottom wall of the pool body is performed again. The locking piece has a reasonable structure and can perform reciprocating motion without the need for staff operation.

[0025] Optionally, a water inlet pipe is provided in the pool body, the water inlet pipe is vertically arranged and the top end of the water inlet pipe is sealed, and water inlet holes are opened on the circumference of the water inlet pipe.

[0026] By adopting the above technical solution, water inlet holes are opened on the circumference of the water inlet pipe, so that the water distribution of the water inlet pipe is more uniform, the sedimentation of sewage is more uniform, and the influence of the outlet water on the sewage sedimentation is reduced.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The scraper blade is an equidistant spiral line, so that when the scraper blade moves, the speed at which the scraper blade pushes the sludge is the same everywhere, and the sludge will not be re-integrated into the sewage due to the excessive linear speed of the scraper blade. ; 2. The auxiliary components are used to assist the scraper blade in scraping mud and improve the working efficiency of the scraper blade; 3. The spring keeps the auxiliary plate in contact with the inner bottom wall of the pool body when it moves toward the pool body axis, and the pusher and the locking member are used to keep the auxiliary plate away from the inner bottom wall of the pool body when it moves away from the pool body axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a radial flow sedimentation tank.

[0029] Figure 2 yes Figure 1 Cross-sectional view of the tank body.

[0030] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle drive component.

[0031] Figure 4 yes Figure 3 The inner cross-sectional view of the middle protective cover is used to show the positional relationship between the mounting block, the paddle plate and the auxiliary plate.

[0032] Figure 5 yes Figure 4 A cross-sectional view of the mounting block showing the pusher and the locking member.

[0033] 1. The invention relates to a tank body; ... DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The present application embodiment discloses a radial flow sedimentation tank. Figure 1 and Figure 2 A radial flow sedimentation tank comprises a tank body 1, a scraper blade 2, a driving member 3, an auxiliary component 4, a discharge pipe 5, an inlet pipe 6, and an outlet component 7; the horizontal cross section of the tank body 1 is circular, the inner bottom wall of the tank body 1 is conical, a mud discharge groove 11 is provided on the inner bottom wall of the tank body 1, the mud discharge groove 11 extends in a vertical direction, the inlet pipe 6 is vertically arranged, the inlet pipe 6 is coaxially arranged with the tank body 1, the inlet pipe 6 passes through the mud discharge groove 11, the upper end surface of the inlet pipe 6 is sealed, and the periphery of the inlet pipe 6 is A plurality of water outlet holes 61 are evenly distributed on the side, the discharge pipe 5 is L-shaped, the upper end of the discharge pipe 5 is connected to the bottom of the mud discharge trough 11, the discharge pipe 5 is used to discharge sludge, the water outlet assembly 7 includes a water outlet pipe 71 and a shielding ring cover 72, the water outlet pipe 71 is horizontally arranged, one end of the water outlet pipe 71 is connected to the inner wall of the pool body 1, the shielding ring cover 72 is coaxially arranged with the pool body 1, the shielding ring cover 72 is arranged on the pool body 1, and the shielding ring cover 72 has a plurality of mesh holes for water flow to pass through.

[0036] Reference Figure 2 and Figure 3The scraper blade 2 is in the shape of a spiral line with equal spacing. The lower end surface of the scraper blade 2 abuts against the inner bottom wall of the pool body 1. The driving member 3 includes a driving motor 31, a driving gear ring 32, a driving gear 33 and a mounting ring 34. An annular groove 12 is provided on the inner side wall of the pool body 1. The mounting ring 34 is coaxially arranged with the pool body 1. The mounting ring 34 is rotatably connected in the annular groove 12. One end of the mounting ring 34 is fixedly connected to the scraper blade 2. The other end of the mounting ring 34 is located above the mud discharge groove 11. The driving gear ring 32 is coaxially arranged with the mounting ring 34. The driving gear ring 32 is fixedly arranged on the mounting ring 34. The driving gear 33 is rotatably connected to the inner side wall of the annular groove 12. The driving gear 33 meshes with the driving gear ring 32. The driving motor 31 is fixedly arranged on the pool body 1. The driving motor 31 is used to drive the driving gear 33 to rotate.

[0037] Reference Figure 3 and Figure 4 The auxiliary component 4 includes a mounting block 41, an auxiliary plate 42, four springs 43, a reciprocating member 44, a pushing member 45, a locking member 46, a protective cover 47 and four sliding rods 48. The reciprocating member 44 includes a reciprocating screw rod 441, a bevel gear 442 and a bevel gear ring 443. The length direction of the reciprocating screw rod 441 is parallel to the generatrix direction of the cone of the bottom wall of the pool body 1. The reciprocating screw rod 441 is rotatably connected to the inner side wall of the pool body 1. The bevel gear ring 443 is located in the annular groove 12. The bevel gear ring 443 is coaxially arranged with the mounting ring 34. The bevel gear ring 443 is fixedly arranged on the upper end surface of the mounting ring 34. The bevel gear 442 is located in the annular groove 12. The bevel gear 442 is coaxially arranged with the reciprocating screw rod 441. The bevel gear 442 is fixedly arranged on one end of the reciprocating screw rod 441, and the bevel gear 442 is meshed with the bevel gear ring 443.

[0038] Reference Figure 3 and Figure 4 The length direction of the protective cover 47 is parallel to the length direction of the reciprocating screw rod 441. One end of the protective cover 47 is fixedly set on the inner wall of the pool body 1, and the other end of the protective cover 47 is fixedly set on the water inlet pipe 6. A guiding inclined surface 471 is provided between the upper end surface of the protective cover 47 and the side wall of the protective cover 47. The lower end surface of the protective cover 47 is opened, and the reciprocating screw rod 441 is located in the protective cover 47.

[0039] Reference Figure 3 and Figure 4The mounting block 41 is slidably connected to the protective cover 47 along the length direction of the protective cover 47, the auxiliary plate 42 is vertically arranged, and the auxiliary plate 42 is slidably connected to the mounting block 41 in the vertical direction, four sliding rods 48 are evenly distributed on the upper end surface of the auxiliary plate 42, the sliding rod 48 is vertically arranged, and the sliding rod 48 is slidably connected to the mounting block 41, four springs 43 correspond to the four sliding rods 48 one by one, the spring 43 is sleeved on the sliding rod 48, one end of the spring 43 is fixedly arranged on the mounting block 41, and the other end of the spring 43 is fixedly arranged on the auxiliary plate 42, and the spring 43 is used to keep the auxiliary plate 42 against the inner bottom wall of the pool body 1.

[0040] Reference Figure 4 and Figure 5 The pushing member 45 includes a gear 451, a rack 452 and a pushing block 453. The length direction of the rack 452 is parallel to the sliding direction of the mounting block 41. The lower end face of the rack 452 is fixedly arranged on the auxiliary plate 42. The axis of the gear 451 is arranged horizontally. The gear 451 is rotatably connected to the mounting block 41. The gear 451 is used to mesh with the rack 452. The pushing block 453 is fixedly arranged on the side wall of the water outlet pipe 71. A matching inclined surface 454 is provided between the upper end face of the pushing block 453 and the side wall of the pushing block 453 away from the water outlet pipe 71. The matching inclined surface 454 is used to drive the auxiliary plate 42 to move in the vertical direction.

[0041] Reference Figure 4 and Figure 5 The locking member 46 includes a ratchet 461, a pawl 462, a paddle 463, a locking spring 464 and an unlocking block 465. The ratchet 461 is coaxially arranged with the gear 451. The ratchet 461 is fixedly arranged on the side wall of the gear 451. The pawl 462 is rotatably connected to the mounting block 41. The pawl 462 is used to engage with the ratchet 461. The locking spring 464 is vertically arranged. One end of the locking spring 464 is fixedly arranged on the mounting block 41. The locking spring 464 is vertically arranged. The other end of 64 is rotatably connected to the pawl 462, and the locking spring 464 keeps the pawl 462 engaged with the ratchet 461. The paddle 463 is fixedly arranged on the pawl 462, and the unlocking block 465 is fixedly arranged on the inner side wall of the protective cover 47 away from the water outlet pipe 71. When the mounting block 41 is at the farthest end of the reciprocating screw 441 away from the water outlet pipe 71, the unlocking block 465 abuts against the paddle 463 to drive the pawl 462 to rotate in the direction away from the ratchet 461.

[0042] The implementation principle of a radial flow sedimentation tank in the embodiment of the present application is as follows: when the sedimentation tank is working, sewage is passed into the tank body 1 from the water inlet hole of the water inlet pipe 6. The fixed sludge in the sewage is stagnant for a long time, and the sludge settles to the inner wall of the tank bottom. The driving member 3 is used to drive the scraper 2 to rotate. Since the scraper 2 is a spiral line with equal spacing, the scraper 2 will drive the silt sunk at the bottom to move toward the mud discharge trough 11. At the same time, the driving member 3 will drive the reciprocating screw 441 to rotate, and the reciprocating screw 441 will rotate. The screw rod 441 drives the mounting block 41 to move back and forth. When the mounting block 41 moves toward the water inlet pipe 6, the auxiliary plate 42 will remain in contact with the inner wall of the pool body 1. When the mounting block 41 moves away from the water inlet pipe 6, the locking piece 46 will limit the rotation of the gear 451, keeping the auxiliary plate 42 away from the bottom wall of the pool body 1 until the unlocking block 465 contacts the dial plate 463, and the auxiliary plate 42 is driven by the spring 43 to abut against the inner bottom wall of the pool body 1 again.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A radial flow sedimentation tank, characterized in that: The invention comprises a pool body (1), a scraper blade (2) and a driving member (3), wherein the scraper blade (2) is in the form of a spiral line with equal spacing, the scraper blade (2) is rotatably connected to the inner side wall of the pool body (1), the scraper blade (2) abuts against the inner bottom wall of the pool body (1), the driving member (3) is used to drive the scraper blade (2) to rotate, and the bottom wall of the pool body (1) is provided with a discharge pipe (5) for discharging sludge.

2. A radial flow sedimentation tank according to claim 1, characterized in that: The inner bottom wall of the pool body (1) is conical, a mud discharge groove (11) is provided at the lowest point of the inner bottom wall of the pool body (1), and the discharge pipe (5) is connected to the mud discharge groove (11).

3. A radial flow sedimentation tank according to claim 2, characterized in that: The driving member (3) comprises a driving motor (31), a driving gear ring (32) and a driving gear (33); the driving gear ring (32) is coaxially arranged with the pool body (1); the driving gear ring (32) is arranged on the scraper blade (2); the driving gear (33) is rotatably connected to the pool body (1); the driving gear (33) is meshed with the driving gear ring (32); and the driving motor (31) is used to drive the driving gear (33) to rotate.

4. A radial flow sedimentation tank according to claim 3, characterized in that: An auxiliary component (4) for assisting in scraping mud is arranged in the pool body (1), and the auxiliary component (4) comprises a mounting block (41), an auxiliary plate (42), a spring (43), a reciprocating member (44), a pushing member (45) and a locking member (46). The mounting block (41) is slidably connected to the pool body (1) along the conical generatrix direction of the inner bottom wall of the pool body (1), the reciprocating member (44) is used to drive the mounting block (41) to reciprocate, and the auxiliary plate (42) is moved along the direction close to or away from the bottom wall of the pool body (1). The auxiliary plate (42) is connected to the mounting block (41) in a sliding manner in the direction of the pool body (1); when the mounting block (41) moves in a direction close to the axis of the pool body (1), the spring (43) is used to keep the auxiliary plate (42) in contact with the inner bottom wall of the pool body (1); when the mounting block (41) moves in a direction away from the axis of the pool body (1), the pushing member (45) is used to keep the auxiliary plate (42) away from the bottom wall of the pool body (1); and the locking member (46) is used to keep the auxiliary plate (42) away from the bottom wall of the pool body (1).

5. A radial flow sedimentation tank according to claim 4, characterized in that: The reciprocating member (44) comprises a reciprocating screw (441), a bevel gear ring (443) and a bevel gear (442); the length direction of the reciprocating screw (441) is parallel to the sliding direction of the mounting block (41); the reciprocating screw (441) is rotatably connected to the inner wall of the pool body (1); the mounting block (41) is threadedly connected to the reciprocating screw (441); the scraper blade (2) is used to rotate to drive the bevel gear ring (443); the bevel gear (442) is arranged on the reciprocating screw (441); and the bevel gear ring (443) is meshed with the bevel gear (442).

6. A radial flow sedimentation tank according to claim 5, characterized in that: The auxiliary component (4) further comprises a protective cover (47), wherein the protective cover (47) is arranged in the pool body (1), and the protective cover (47) is used to cover the reciprocating screw rod (441) and the mounting block (41).

7. A radial flow sedimentation tank according to claim 6, characterized in that: An end of the protective cover (47) facing away from the tank body (1) is provided with a guiding slope (471) for reducing sediment accumulation.

8. A radial flow sedimentation tank according to claim 5, characterized in that: The pushing member (45) comprises a gear (451), a rack (452) and a push block (453); the length direction of the rack (452) is parallel to the sliding direction of the auxiliary plate (42); the rack (452) is arranged on the auxiliary plate (42); the gear (451) is rotatably connected to the mounting block (41); the gear (451) is used for meshing with the rack (452); the push block (453) is arranged in the pool body (1); a matching inclined surface (454) is provided on the push block (453) for guiding the auxiliary plate (42) to move in a direction away from the inner bottom wall of the pool body (1); and the locking member (46) is used for limiting the rotation of the gear (451).

9. A radial flow sedimentation tank according to claim 8, characterized in that: The locking member (46) comprises a ratchet (461), a pawl (462), a shift plate (463), a locking spring (464) and an unlocking block (465); the ratchet (461) is coaxially arranged with the gear (451); the ratchet (461) is arranged on the gear (451); the pawl (462) is rotatably connected to the mounting block (41); the locking spring (464) is used to keep the pawl (462) engaged with the ratchet (461); the shift plate (463) is arranged on the pawl (462); when the mounting block (41) moves to the end of the reciprocating screw (441) away from the axis of the pool body (1), the unlocking block (465) is used to abut against the shift plate (463) and drive the shift plate (463) to rotate.

10. A radial flow sedimentation tank according to claim 1, characterized in that: A water inlet pipe (6) is arranged in the pool body (1); the water inlet pipe (6) is arranged vertically and the top end of the water inlet pipe (6) is sealed; a water inlet hole (61) is provided on the circumference of the water inlet pipe (6).

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