Anaerobic tank for wastewater treatment

Abstract

The present application relates to the technical field of wastewater treatment equipment, improves the problem of high installation cost in the prior art, and discloses an anaerobic tank for wastewater treatment, which includes a tank body and a pump body. The water outlet of the pump body is provided with a first pipe body, and the water inlet of the pump body is connected to a second pipe body. The pump body also includes a rotary pipe, one end of the rotary pipe is connected to the first pipe body, and the other end is connected to the second pipe body. The rotary pipe is provided with a first switching member that can connect or close the rotary pipe to the first pipe body. The first pipe body is connected to a third pipe body. The first pipe body is provided with a second switching member and a first water shut-off assembly. The second pipe body is provided with a third switching member. A second water shut-off assembly that can block or open the second pipe body is provided between the second pipe body and the tank body. The present application enables the anaerobic tank to include at least two states: a water distribution state and a mud discharge state, so that the water distribution and mud discharge of the anaerobic tank can be performed by a single pump body, thereby saving the installation cost of the system.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment equipment, and in particular to an anaerobic tank for wastewater treatment. Background Art

[0002] Biological treatment technology is a commonly used method for wastewater treatment and is mainly divided into aerobic biological treatment and anaerobic biological treatment. Aerobic biological treatment is stable and reliable, but it requires aeration, consumes a lot of energy, and is not suitable for treating high-concentration wastewater. Anaerobic biological treatment technology has been widely used in the treatment of high-concentration wastewater due to its advantages such as low energy consumption, low sludge production, and the ability to recover biogas during the digestion process. However, existing anaerobic digestion processes generally have problems such as slow microbial growth, long startup time, severe anaerobic sludge loss, and low pollutant removal efficiency.

[0003] The relevant technology includes an intermediate tank, a sludge tank and an anaerobic tank body. A first pipeline is arranged between the anaerobic tank body and the intermediate tank, and the wastewater in the intermediate tank is sent to the anaerobic tank body through the first pipeline. A first pump body is provided on the first pipeline for extracting wastewater. A second pipeline is arranged between the anaerobic tank body and the sludge tank, and the sludge in the anaerobic tank body is sent to the sludge tank through the second pipeline. A second pump body is provided on the second pipeline for extracting the sludge from the anaerobic tank body. Switch valves are provided in both the first pipeline and the second pipeline, and the water distribution or sludge suction mode is switched by opening and closing the switch valves.

[0004] Regarding the above-mentioned related technologies, corresponding pipelines and water pumps need to be set up for water distribution and mud discharge, the laying cost is high, and it is troublesome to control the switches of the water pumps and the valves at each node of the pipeline during operation. Summary of the Invention

[0005] In order to improve the problem of high laying cost in the prior art, the present application provides an anaerobic tank for wastewater treatment.

[0006] The following technical solutions are adopted:

[0007] An anaerobic tank for wastewater treatment comprises a tank body and a pump body, wherein a water outlet end of the pump body is connected to the tank body through a first pipe body, and a water inlet end of the pump body is connected to a second pipe body, and the pump body further comprises a rotary pipe, one end of the rotary pipe is connected to the first pipe body, and the other end is connected to the second pipe body, a first switching member is provided at the connection between the rotary pipe and the first pipe body, which can connect or close the rotary pipe and the first pipe body, the first pipe body is connected to a third pipe body, and a second switching member is provided at the connection between the first pipe body and the third pipe body, which can connect or close the first pipe body and the third pipe body, a first water shut-off component is provided on the first pipe body between the first switching member and the second switching member, which can block or open the first pipe body, a third switching member is provided at the connection between the second pipe body and the rotary pipe, which can connect or close the rotary pipe and the second pipe body, and a second water shut-off component is provided between the second pipe body and the tank body, which can block or open the second pipe body.

[0008] By adopting the above technical solution, the anaerobic tank includes at least two states: in the water distribution state, the second pipe body is connected to the intermediate pool, and the first pipe body is connected to the tank body. At this time, both ends of the rotary pipe are closed and not connected to the second pipe body and the first pipe body, the third pipe body is closed, and the pump body pumps the water in the intermediate pool into the first pipe body through the second pipe body, and the tank body is filled; in the sludge discharge state, the third pipe body is connected to the sludge pool, the first water shut-off component blocks the first pipe body to make the first pipe body into two sections, one section is connected to the rotary pipe, and the other section is connected to the third pipe body. The second water shut-off component cuts off the connection between the second pipe body and the intermediate pool, and the sludge is sequentially passed from the tank body to the rotary pipe, and then to the second pipe body. After passing through the pump body, it is sent to the connecting part of the first pipe body and the third pipe body, and finally sent out to the sludge pool by the third pipe body; a single pump body is used for water distribution and sludge discharge of the anaerobic tank to save the laying cost of the system.

[0009] Optionally, the first tube body includes a transition section and a conveying section, the third tube body is connected to the transition section, the rotary pipe is connected to the conveying section, the first water shut-off member is arranged between the transition section and the conveying section, the first switching member includes a first rotating pipe, the first rotating pipe is rotatably connected to the conveying section, and the side wall of the first rotating pipe is provided with a first through hole that can be rotated to connect with the rotary pipe, the second switching member includes a second rotating pipe, the second rotating pipe is rotatably connected to the transition section, and the side wall of the second rotating pipe is provided with a second through hole that can be rotated to connect with the third tube body.

[0010] By adopting the above technical solution, the first rotating tube is rotated, and when the first through hole corresponds to the tube opening of the rotating tube, the first tube body is connected to the rotating tube. When the first through hole and the rotating tube are offset, the tube wall of the first rotating tube blocks the tube opening of the rotating tube to block the connection between the first tube body and the rotating tube. Similarly, the second rotating tube is rotated to realize the switching of the connection and closure of the first tube body and the third tube body, thereby providing a more convenient pipeline switching structure.

[0011] Optionally, the third switching member includes a third rotating tube, which is rotatably connected to the second tube body, and a third through hole is provided on one side of the third rotating tube, which can be rotated and connected to the rotating tube.

[0012] By adopting the above technical solution, the third rotating pipe is rotated, and when the third through hole corresponds to the pipe mouth of the rotating pipe, the second pipe body is connected to the rotating pipe. When the third through hole and the rotating pipe are offset, the pipe wall of the third rotating pipe blocks the pipe mouth of the rotating pipe to block the connection between the second pipe body and the rotating pipe, thereby providing a diversion for the water body.

[0013] Optionally, the first water-cutting assembly includes a first connecting plate and a first baffle, the first connecting plate is arranged adjacent to the first rotating tube and the second rotating tube perpendicular to the length direction of the first tube body, and a connecting groove for sliding the first baffle is provided in the first connecting plate, and the first baffle can slide to block the connection between the first rotating tube and the second rotating tube, and a control component for controlling the sliding of the first baffle is provided on the second rotating tube.

[0014] By adopting the above technical solution, the control member drives the movement of the first baffle, and the first baffle can slide between the first rotating pipe and the second rotating pipe, thereby closing or opening the pipeline of the first pipe body. When the transition section and the conveying section are separated, and the transition section is connected to the third pipe body, and the conveying section is connected to the rotary pipe, the water body can be turned.

[0015] Optionally, the control member includes a first control column, the first baffle is provided with an arc-shaped control groove, the first control column is slidably connected to the control groove, the first control column abuts the inner wall of the first baffle and can push the first baffle to slide, the first connecting piece is provided with a guide column in the connecting groove, the first baffle is provided with a yield groove for the guide column to slide, the outer wall of the first rotating tube is provided with a first support rod, and the outer wall of the second rotating tube is provided with a second support rod, the first tube body is provided with two grooves along the circumference, the first support rod and the second support rod are extended to the outside corresponding to the grooves and can slide in the corresponding grooves, the first connecting piece is provided with an arc-shaped sliding groove, and the first control column is extended through the sliding groove to connect to one end of the second support rod.

[0016] By adopting the above technical solution, the rotation of the second rotating tube drives the second support rod to rotate, so that the first control column on the second support rod slides in the control groove and abuts against the inner wall of the control groove to push the first baffle to move, thereby realizing the first baffle sliding between the first rotating tube and the second rotating tube, thereby closing or opening the pipeline of the first tube body.

[0017] Optionally, the second water cut-off assembly includes a second connecting plate and a second baffle, the second connecting plate and the second baffle have the same structure as the first connecting plate and the first baffle, a third support rod is provided on the outer wall of the third rotating tube, and the second tube body is provided with a single slot with the same structure, the third support rod passes through the slot and can slide in the slot, and a second control column is provided at one end of the third support rod that can slide in the control slot in the second baffle.

[0018] By adopting the above technical solution, the second water shut-off component has the same structure as the first water shut-off component. After the second baffle moves, it closes or opens the pipeline of the second pipe body to block the connection between the second pipe body and the intermediate tank, so that the water can be sent to the sludge tank.

[0019] Optionally, three connecting rods and a control rod are further included, the control rod including a main shaft and a protrusion, the main shaft is arranged parallel to the first tube body, the first tube body and the second tube body are both provided with support plates, the two ends of the control rod are respectively rotatably connected to the corresponding support plates, one end of the three connecting rods is rotatably connected to the corresponding first support rod, the second support rod and the third support rod, and the other ends are all rotatably connected to the protrusion.

[0020] By adopting the above technical solution, the control rod is rotated to control the connecting rod to drag the first support rod, the second support rod and the third support rod to rotate simultaneously, so that the pipeline is switched between the water distribution state and the mud discharge state.

[0021] Optionally, an input pipe and an output pipe are provided at one end of the first tube body away from the pump body, the output pipe is connected to a plurality of branch pipes arranged in a circumferential array, and both the input pipe and the output pipe are provided with switch valves.

[0022] By adopting the above technical solution, the range of the output pipe to absorb sludge in the tank body is extended through the branch pipe, water is distributed in the tank body through the input pipe, and the switch valve is used to open or close the input pipe or output pipe.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. By switching the water flow direction through a rotary pipe, a single one-way pump can be used to distribute water and pump mud to the anaerobic tank, replacing the existing technology that requires dedicated pipes and water pumps for water distribution and mud pumping, thus saving system costs;

[0025] 2. Through the cooperation of the control rod and the support rod, the rotation of the first support rod, the second support rod and the third support rod can be controlled at the same time, which can conveniently switch between the water distribution state and the mud discharge state to improve the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0027] Figure 2 1 is a schematic diagram showing the cross-sectional structure of the first tube body;

[0028] Figure 3 1 is a schematic diagram showing the cross-sectional structure of the second tube body;

[0029] Figure 4 1. It is a schematic diagram of the structures of the first rotating pipe, the second rotating pipe and the third rotating pipe;

[0030] Figure 5 This is a schematic diagram of the motion structure of the first water shut-off component;

[0031] Figure 6 It is a schematic diagram of the tank body cross-section structure.

[0032] Explanation of reference numerals: 1. intermediate tank; 2. sludge tank; 3. tank body; 4. pump body; 5. first pipe body; 51. transition section; 52. conveying section; 53. slot; 54. support plate; 55. first rotating pipe; 551. first support rod; 552. rotating ring; 553. first through hole; 56. second rotating pipe; 561. second through hole; 562. second support rod; 563. first control column; 57. input pipe; 58. output pipe; 581. branch pipe; 582. switch valve; 6. First water shut-off assembly; 61, first connecting piece; 611, connecting groove; 612, guide column; 613, slide groove; 62, first baffle; 621, control groove; 622, yield groove; 7, second tube body; 71, third rotating tube; 711, third through hole; 712, third support rod; 72, second water shut-off assembly; 721, second connecting piece; 722, second baffle; 8, rotating tube; 9, control rod; 91, main shaft; 92, bump; 93, connecting rod; 10, third tube body. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 To the attached Figure 6 This application is described in further detail.

[0034] Reference Figures 1 to 3The embodiment of the present application discloses an anaerobic tank for wastewater treatment, which is connected by a pipeline to an intermediate tank 1 for supplying wastewater and a sludge tank 2 for discharging treated sludge. The anaerobic tank includes a tank body 3 and a pump body 4. The water outlet of the pump body 4 is connected to the tank body 3 through a first pipe body 5. The water inlet of the pump body 4 is connected to a second pipe body 7. The end of the second pipe body 7 is connected to the intermediate tank 1. The pump body 4 also includes a rotary pipe 8. One end of the rotary pipe 8 is connected to the first pipe body 5, and the other end is connected to the second pipe body 7. The connection between the rotary pipe 8 and the first pipe body 5 is provided with a first switching member that can connect or close the rotary pipe 8 to the first pipe body 5. The first pipe body 5 is connected to a third pipe body 10, and the third pipe body 10 is away from the first pipe body 5. One end is connected to the sludge tank 2, and a second switching component is provided at the connection between the first tube body 5 and the third tube body 10, which can connect or close the first tube body 5 and the third tube body 10. A first water-cutting component 6 that can block or open the first tube body 5 is provided on the first tube body 5 between the first switching component and the second switching component. A third switching component that can connect or close the rotary pipe 8 and the second tube body 7 is provided at the connection between the second tube body 7 and the rotary pipe 8. A second water-cutting component 72 that can block or open the second tube body 7 is provided between the second tube body 7 and the tank body 3. The anaerobic tank includes at least two states: in the water distribution state, the second pipe body 7 is connected to the intermediate pool 1, and the first pipe body 5 is connected to the tank body 3. At this time, both ends of the rotary pipe 8 are closed and not connected to the second pipe body 7 and the first pipe body 5. The third pipe body 10 is closed, and the pump body 4 pumps the water in the intermediate pool 1 into the first pipe body 5 through the second pipe body 7 and fills the tank body 3; in the sludge discharge state, the third pipe body 10 is connected to the sludge pool 2, and the first water cut-off component 6 blocks the first pipe body 5 so that the first pipe body 5 is divided into two sections, one section is connected to the rotary pipe 8, and the other section is connected to the sludge tank 2. The first section is connected with the third pipe body 10, and the second water-cutting component 72 cuts off the connection between the second pipe body 7 and the intermediate pool 1. The sludge is discharged from the tank body 3 through the first pipe body 5, the rotary pipe 8, the second pipe body, the pump body 4, and the third pipe body 10 to the sludge pool 2. Part of the first pipe body 5 is sent to the rotary pipe 8 and then to the second pipe body 7. After passing through the pump body 4, it is sent to the connecting part between the first pipe body 5 and the third pipe body 10, and finally sent to the sludge pool 2 by the third pipe body 10. A single pump body 4 is used to distribute water and discharge sludge in the anaerobic tank to save the laying cost of the system.

[0035] Reference Figure 2Specifically, the first tube body 5 includes a transition section 51 and a conveying section 52. The transition section 51 is connected to the pump body 4. The third tube body 10 is connected to the transition section 51. The rotary pipe 8 is connected to the conveying section 52. The first water shut-off member is arranged between the transition section 51 and the conveying section 52. The first switching member includes a first rotating pipe 55. The first rotating pipe 55 is arranged along the length direction of the first tube body 5, and a swivel 552 is provided at both ends of the first rotating pipe 55. The first rotating pipe 55 is rotatably connected to the conveying section 52. A first through hole 553 is opened on the side wall of the first rotating pipe 55, which can be rotatably connected to the rotary pipe 8. The second switching member includes a second rotating pipe 56. The second rotating pipe 56 is rotatably connected to the transition section 51. A second through hole 561 is opened on the side wall of the second rotating pipe 56, which can be rotatably connected to the third tube body 10. Rotate the first rotating tube 55, and when the first through hole 553 corresponds to the pipe opening of the rotating tube 8, the first tube body 5 is connected to the rotating tube 8. When the first through hole 553 is offset from the rotating tube 8, the tube wall of the first rotating tube 55 blocks the pipe opening of the rotating tube 8 to block the connection between the first tube body 5 and the rotating tube 8. Similarly, rotate the second rotating tube 56 to realize the switching of the connection and closure of the first tube body 5 and the third tube body 10, thereby providing a more convenient pipeline switching structure.

[0036] Reference Figure 3 The third switching member includes a third rotating tube 71, which is rotatably connected to the second tube body 7. A third through hole 711 is defined on one side of the third rotating tube 71 and is rotatably connected to the return tube 8. When the third through hole 711 aligns with the opening of the return tube 8, the second tube body 7 and the return tube 8 are connected. When the third through hole 711 deviates from the return tube 8, the wall of the third rotating tube 71 blocks the opening of the return tube 8, thereby blocking the connection between the second tube body 7 and the return tube 8 and providing a diversion mechanism for the water.

[0037] The first water-cutting component 6 includes a first connecting piece 61 and a first baffle 62. A sealing strip is provided around the first baffle 62. The first connecting piece 61 is provided perpendicular to the length direction of the first tube body 5 and adjacent to the first rotating tube 55 and the second rotating tube 56. One side of the first connecting piece 61 is connected to the first rotating tube 55, and the other side is connected to the second rotating tube 56. A connecting groove 611 is provided in the first connecting piece 61 for the first baffle 62 to slide. The width of the connecting groove 611 is close to the thickness of the first baffle 62. The first baffle 62 can slide to block the communication between the first rotating tube 55 and the second rotating tube 56. A control component for controlling the sliding of the first baffle 62 is provided on the second rotating tube 56. The first baffle 62 is driven by the control member to move and slide between the first rotating pipe 55 and the second rotating pipe 56, thereby closing or opening the pipeline of the first pipe body 5. When the transition section 51 and the conveying section 52 are separated, the transition section 51 is connected to the third pipe body 10, and the conveying section 52 is connected to the rotary pipe 8, the water body can be diverted.

[0038] The control member includes a first control column 563, an arc-shaped control groove 621 is provided on the first baffle 62, the first control column 563 is slidably connected to the control groove 621, the diameter of the first control column 563 is equal to the width of the control groove 621, the first control column 563 abuts the inner wall of the first baffle 62 and can push the first baffle 62 to slide, the first connecting piece 61 is provided with a guide column 612 in the connecting groove 611, and the first baffle 62 is provided with a guide column 612 for sliding. The first rotating tube 55 has a first support rod 551 on its outer wall, and the second rotating tube 56 has a second support rod 562 on its outer wall. The first tube 5 has two slots 53 formed along its circumference. The first support rod 551 and the second support rod 562 extend through their corresponding slots 53 to the outside and can slide within them. The first connecting piece 61 has an arcuate sliding groove 613 formed therein, and the first control post 563 extends through the sliding groove 613 and connects to one end of the second support rod 562. The rotation of the second rotating tube 56 drives the rotation of the second support rod 562, causing the first control post 563 on the second support rod 562 to slide within the control groove 621 and abut against the inner wall of the control groove 621, pushing the first blocking piece 62 to move, thereby enabling the first blocking piece 62 to slide between the first rotating tube 55 and the second rotating tube 56, thereby closing or opening the pipeline of the first tube 5.

[0039] The second water shutoff assembly 72 includes a second connecting piece 721 and a second baffle 722. The structures of the second connecting piece 721 and the second baffle 722 are identical to those of the first connecting piece 61 and the first baffle 62. A third support rod 712 is provided on the outer wall of the third rotating tube 71. The second tube body 7 is provided with a single slot 53 of the same structure. The third support rod 712 extends through the slot 53 and can slide within the slot 53. A second control post is provided at one end of the third support rod 712, which can slide within the control groove 621 in the second baffle 722. The second water shutoff assembly 72 has the same structure as the first water shutoff assembly 6. When the second baffle 722 is moved, it closes or opens the pipeline of the second tube body 7, thereby blocking the connection between the second tube body 7 and the intermediate tank 1, allowing water to be delivered to the sludge tank 2.

[0040] The anaerobic tank also includes three connecting rods 93 and a control rod 9. The control rod 9 is a crankshaft structure including a main shaft 91 and a protrusion 92. The main shaft 91 of the control rod 9 is arranged parallel to the first tube body 5. The first tube body 5 and the second tube body 7 are each provided with a support plate 54. The control rod 9 is rotatably connected to the corresponding support plate 54 at both ends of the main shaft 91. One end of the three connecting rods 93 is rotatably connected to the corresponding first support rod 551, second support rod 562, and third support rod 712, and the other end is rotatably connected to the protrusion 92 of the control rod 9. By rotating the control rod 9, the connecting rod 93 is controlled to drive the first support rod 551, second support rod 562, and third support rod 712 to rotate simultaneously, thereby switching the pipeline between the water distribution state and the mud discharge state. Preferably, a control device such as a stepper motor or a rotary cylinder can be installed at one end of the control rod 9 to drive the control rod 9 to rotate, thereby making the switching of the water path more convenient. In addition, a numerical control unit can be installed on the control device to further control the opening and closing of the device through signal operation, thereby realizing intelligent management.

[0041] An inlet pipe 57 and an outlet pipe 58 are provided at the end of the first tube 5 away from the pump body 4. The outlet pipe 58 is connected to a plurality of branch pipes 581 arranged in a circumferential array. Both the inlet pipe 57 and the outlet pipe 58 are equipped with on-off valves 582. The branch pipes 581 extend the range of the outlet pipe 58 to absorb sludge from the tank 3, and the inlet pipe 57 distributes water to the tank 3. The on-off valves 582 are used to open or close the inlet pipe 57 or the outlet pipe 58. Preferably, the on-off valves 582 can be solenoid valves to facilitate operation, and a numerical control unit can be added for intelligent configuration.

[0042] The implementation principle of an anaerobic tank for wastewater treatment in the embodiment of the present application is as follows:

[0043] When the anaerobic tank is in the water distribution state, the second pipe body 7 is connected to the intermediate pool 1, the first pipe body 5 is connected to the tank body 3, both ends of the rotary pipe 8 are closed and not connected to the second pipe body 7 and the first pipe body 5, the third pipe body 10 is closed, and the pump body 4 pumps the water in the intermediate pool 1 through the second pipe body 7 to the first pipe body 5, and fills the tank body 3;

[0044] Rotate the control lever 9 to drive the first water-cutting assembly 6 to block the first tube body 5 so that the first tube body 5 is divided into two sections. The conveying section 52 is connected to the rotary pipe 8, and the transition section 51 is connected to the third tube body 10. The second water-cutting assembly 72 cuts off the connection between the second tube body 7 and the intermediate tank 1. The sludge passes from the tank body 3 through the conveying section 52 to the rotary pipe 8, and is sent to the second tube body 7. After passing through the pump body 4, it is sent to the connecting part between the transition section 51 and the third tube body 10, and finally is sent out from the third tube body 10 to the sludge tank 2.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An anaerobic tank for wastewater treatment, characterized by: The invention comprises a tank body (3) and a pump body (4), wherein the water outlet end of the pump body (4) is connected to the tank body (3) through a first pipe body (5), an end of the first pipe body (5) away from the pump body (4) is provided with an input pipe (57) and an output pipe (58), the water inlet end of the pump body (4) is connected to a second pipe body (7), the pump body (4) is further connected to a rotary pipe (8), one end of the rotary pipe (8) is connected to the first pipe body (5), and the other end is connected to the second pipe body (7), the end of the second pipe body (7) is connected to an intermediate pool (1) for supplying wastewater, a first switching member is provided at the connection between the rotary pipe (8) and the first pipe body (5) to enable the rotary pipe (8) to be connected to or closed with the first pipe body (5), and the first pipe body (5) is connected to a third pipe body (8). The pipe body (10) is connected to a sludge tank (2) at one end of the third pipe body (10) away from the first pipe body (5); a second switching member is provided at the connection between the first pipe body (5) and the third pipe body (10) to enable the first pipe body (5) and the third pipe body (10) to be connected or closed; a first water cut-off component (6) is provided on the first pipe body (5) between the first switching member and the second switching member to block or open the first pipe body (5); a third switching member is provided at the connection between the second pipe body (7) and the rotary pipe (8) to enable the rotary pipe (8) and the second pipe body (7) to be connected or closed; a second water cut-off component (72) is provided between the second pipe body (7) and the tank body (3) to block or open the second pipe body (7); The first tube body (5) includes a transition section (51) and a conveying section (52), the third tube body (10) is connected to the transition section (51), the rotary pipe (8) is connected to the conveying section (52), the first water cut-off assembly (6) is arranged between the transition section (51) and the conveying section (52), the first switching member includes a first rotating pipe (55), the first rotating pipe (55) is rotatably connected to the conveying section (52), and a first through hole (553) is provided on the side wall of the first rotating pipe (55) and is communicated with the rotary pipe (8) after rotation; the second switching member includes a second rotating pipe (56), the second rotating pipe (56) is rotatably connected to the transition section (51), and a second through hole (561) is provided on the side wall of the second rotating pipe (56) and is communicated with the third tube body (10) after rotation; The third switching member comprises a third rotating tube (71), the third rotating tube (71) being rotatably connected to the second tube body (7), and a third through hole (711) is provided on one side of the third rotating tube (71) for communicating with the rotating tube (8) after rotation; The first water cut-off assembly (6) comprises a first connecting piece (61) and a first baffle (62), wherein the first connecting piece (61) is perpendicular to the length direction of the first tube body (5) and is arranged adjacent to the first rotating tube (55) and the second rotating tube (56), and a connecting groove (611) for sliding the first baffle (62) is provided in the first connecting piece (61), and the first baffle (62) can slide to block the communication between the first rotating tube (55) and the second rotating tube (56), and a control member for controlling the sliding of the first baffle (62) is provided on the second rotating tube (56); The control member includes a first control column (563), an arc-shaped control groove (621) is provided on the first baffle (62), the first control column (563) is slidably connected to the control groove (621), the first control column (563) abuts against the inner wall of the first baffle (62) and can push the first baffle (62) to slide, the first connecting piece (61) is provided with a guide column (612) in the connecting groove (611), and the first baffle (62) is provided with a clearance groove (622) for the guide column (612) to slide, and the The outer wall of the first rotating tube (55) is provided with a first support rod (551), the outer wall of the second rotating tube (56) is provided with a second support rod (562), the first tube body (5) is provided with two slots (53) along the circumferential direction, the first support rod (551) and the second support rod (562) are provided with corresponding slots (53) to the outside and can slide in the corresponding slots (53), the first connecting piece (61) is provided with an arc-shaped sliding groove (613), the first control column (563) is provided with the sliding groove (613) and is connected to one end of the second support rod (562); The second water cut-off assembly (72) comprises a second connecting piece (721) and a second baffle (722), the structures of the second connecting piece (721) and the second baffle (722) being identical to those of the first connecting piece (61) and the first baffle (62), a third support rod (712) being provided on the outer wall of the third rotating tube (71), the second tube body (7) being provided with a single slot (53) having the same structure, the third support rod (712) passing through the slot (53) and being slidable in the slot (53), and a second control column being provided at one end of the third support rod (712) being slidable in the control slot (621) in the second baffle (722); It also includes three connecting rods (93) and a control rod (9), wherein the control rod (9) includes a main shaft (91) and a protrusion (92), wherein the main shaft (91) is arranged parallel to the first tube body (5), and the first tube body (5) and the second tube body (7) are both provided with a support sheet (54), and both ends of the control rod (9) are respectively rotatably connected to the corresponding support sheet (54), and one end of the three connecting rods (93) is respectively rotatably connected to the first support rod (551), the second support rod (562) and the third support rod (712), and the other end is rotatably connected to the protrusion (92); By rotating the control rod (9) to control the connecting rod (93), the first support rod (551), the second support rod (562), and the third support rod (712) are dragged to rotate simultaneously, thereby switching the pipeline between the water distribution state and the mud discharge state.

2. The anaerobic tank for wastewater treatment according to claim 1, characterized in that: The output pipe (58) is connected to a plurality of branch pipes (581) arranged in a circumferential array, and both the input pipe (57) and the output pipe (58) are provided with a switch valve (582).

Images