Automatic flushing system and method for regulating storage tanks

Abstract

This invention provides an automatic flushing system and method for a storage tank, including a flushing track, a traveling device, a flushing frame, and a supply pipe device. A flushing track is provided within the storage tank, and a traveling device moves along the track. The traveling device is equipped with a flushing frame, which has multiple nozzles for flushing the sediment at the bottom of the storage tank. The flushing frame is connected to a flushing pump unit via flushing pipes. A supply pipe device is also provided, with the flushing pipe wound on a winding drum to supply flushing pipes as the traveling device moves. The system is less affected by the shape of the storage tank; flushing pipes and the track system can be arranged according to the needs of any tank shape, making it particularly suitable for long storage tanks. One flushing system can be used for the entire storage tank, eliminating the need for separate flushing systems for each section. The flushing nozzle system can be deployed and retracted as needed, keeping it always above the water surface for easy maintenance and preventing damage from prolonged immersion in sewage.

Description

Technical Field

[0001] This invention relates to the field of water environment management technology, and in particular to an automatic flushing system and method for regulating reservoirs. Background Technology

[0002] Storage tanks are a common facility in urban drainage systems. Their basic function is to temporarily store rainwater and sewage mixtures or initial rainwater that exceed the capacity of the sewage treatment system or the water environment capacity of natural water bodies during rainfall. After the rain stops, the stored water is then released to the sewage collection network or sewage treatment system. Because rainwater and initial rainwater contain a large amount of pollutants, especially suspended solids, sediment will form in the storage tank. Therefore, after the water in the storage tank is drained, it needs to be cleaned to avoid affecting its subsequent use.

[0003] Currently, commonly used flushing devices for regulating storage tanks include intelligent jet sprayers, flap gate flushing gates, hydraulic tipping buckets, and vacuum flushing, each with its optimal application scenarios and advantages and disadvantages. For example, intelligent jet sprayers have disadvantages such as many dead zones, susceptibility to the influence of the regulating storage tank's columns, large quantity required, and high energy consumption. Flap gate flushing gates, hydraulic tipping buckets, and vacuum flushing have disadvantages such as incomplete flushing (especially when there is a thick layer of sludge at the bottom of the tank) and inability to achieve targeted flushing. Chinese patent document CN210066991U describes a regulating storage tank that facilitates the flushing of sludge, which is equipped with flushing pipes to flush the settled sludge. However, as the area of ​​the regulating storage tank increases, too many flushing pipes need to be installed, which leads to a significant increase in flushing costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic flushing system and method for regulating storage tanks, which can improve flushing efficiency and realize automatic flushing.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an automatic flushing system for a storage tank, comprising a flushing track, a walking device, a flushing frame, and a supply pipe device;

[0006] A flushing track is provided inside the storage tank. A walking device is provided on the flushing track to travel along the flushing track. A flushing frame is provided on the walking device. The flushing frame is provided with multiple nozzles for flushing the sediment at the bottom of the storage tank. The flushing frame is connected to the flushing pump group through a flushing pipe.

[0007] It is also equipped with a pipe supply device, in which the flushing pipe is wound on the take-up drum of the pipe supply device to supply the flushing pipe as the traveling device moves.

[0008] In the preferred embodiment, the regulating tank has a water storage area in the middle, a flushing water storage area at one end of the water storage area, and a drainage and sludge removal area at the other end.

[0009] An overflow baffle is installed between the water storage area of ​​the regulating tank and the flushing water storage area to allow the supernatant in the water storage area of ​​the regulating tank to overflow into the flushing water storage area.

[0010] The bottom of the drainage and sludge discharge area is lower than the bottom of the water storage area of ​​the regulating tank, and a gravity sludge discharge pipe is installed in the drainage and sludge discharge area.

[0011] In the preferred embodiment, the gravity sludge discharge pipe is equipped with a rotatable turbine blade and a gate.

[0012] In the preferred embodiment, a flushing water storage area inlet pipe is provided in the flushing water storage area, and a regulating tank inlet is provided in the drainage and sludge discharge area;

[0013] A mud pump is also installed in the drainage and sludge discharge area to discharge mud under pressure.

[0014] In a preferred embodiment, a camera is installed above the storage tank to observe the thickness of the deposited silt.

[0015] Liquid level sensors are also installed in the water storage area and flushing water storage area of ​​the regulating reservoir.

[0016] In the preferred embodiment, the pipe supply device is structured as follows: the winding drum is connected to the winding motor, and the winding motor is a constant torque motor to keep the winding drum at a certain torque. When the tension on the rinsing pipe is greater than the output torque of the winding motor, the pipe is fed; when the tension on the rinsing pipe is less than the output torque of the winding motor, the pipe is taken back.

[0017] The end of the flushing pipe passes through the side wall of the winding drum and exits from the shaft center. A rotatable pressure pipe connector is provided at the end of the flushing pipe.

[0018] In the preferred embodiment, the walking device has the following structure: a walking motor is fixed on the walking base, the walking motor is connected to the walking wheel, and the wheel surface of the walking wheel contacts the washing track to drive the walking device to move.

[0019] The walking seat is equipped with a swingable washing rack, and the bottom of the washing rack is equipped with a rigid pipe extending horizontally, with multiple nozzles on the rigid pipe.

[0020] A reversing valve is installed at the inlet of the walking motor. The flushing pipe is connected to the walking motor through the reversing valve. The output port of the walking motor is connected to the nozzle through the reversing valve. The walking motor and the nozzle form a series structure.

[0021] In a preferred embodiment, the flushing pump assembly includes at least one flushing pump and one booster pump, with the flushing pump and booster pump connected in parallel. A second check valve is provided at the outlet of the flushing pump, and an overflow valve is connected in parallel upstream of the second check valve. When the second check valve cannot be opened, the overflow valve is activated, and water flows back to the inlet of the flushing pump.

[0022] It is also equipped with a shut-off valve, and the flushing pipe is connected to the nozzle through the shut-off valve to form a short-circuit structure.

[0023] The output pressure of the booster pump is greater than that of the flushing pump.

[0024] In a preferred embodiment, the rinsing track is U-shaped, and a partition wall is provided between the U-shaped rinsing tracks, the height of which is lower than the height of the rinsing track.

[0025] The flushing track is supported at the bottom of the storage tank by multiple track columns;

[0026] A limit lifting rod is installed on the track column at the initial position of the walking device. When the walking device is in the initial position, the limit lifting rod will lift the flushing frame, causing the nozzle to leave the water surface.

[0027] A method using the above-mentioned automatic flushing system for regulating storage tanks includes the following steps:

[0028] S1. During rainy weather, the storage tank begins to store water. When the water level in the storage tank exceeds the overflow barrier, water enters the flushing storage area until the level sensor detects that the water level in the storage area of ​​the storage tank has reached the maximum storage water level. Then, the gate of the storage tank closes and stops the water intake.

[0029] S2. After the weather clears up, the water storage area of ​​the regulating tank begins to drain. After the supernatant in the water storage area of ​​the regulating tank is drained, the regulating tank enters the flushing and sludge removal mode.

[0030] S3. Start the winding motor. The winding motor outputs a constant torque to keep the rinsing pipe taut.

[0031] S4. Start the booster pump and flushing pump of the flushing pump group. When the booster pump enters the power stroke, the water sucked in from the flushing storage area drives the walking motor to rotate. The walking device moves along the flushing track from the initial position. The flushing frame is lowered and the high-pressure water flow flushes the sediment at the bottom of the storage tank.

[0032] When the shut-off valve is activated, the flushing rack enters the in-place flushing mode;

[0033] S5. When the walking device has completed the journey of the washing track, the washing effect is checked by the camera, the reversing valve is controlled to reverse, and the walking device returns.

[0034] By controlling the working status of the booster pump, the walking speed and stopping position of the walking device can be controlled;

[0035] S6. After rinsing is complete, start the mud pump to force mud discharge;

[0036] The above steps enable automatic flushing of sediment in the storage tank.

[0037] The advantages of this invention are: (1) It is less affected by the shape of the storage tank. The flushing pipeline and track walking system can be arranged according to the needs of any tank shape, which is especially suitable for long storage tanks; (2) One flushing system can be used for the entire storage tank, without the need to set up a separate flushing system for each section; (3) The flushing nozzle system can be opened and closed as needed to keep it above the water surface of the storage tank, which is convenient for maintenance and avoids damage due to long-term immersion in sewage; (4) The cost is low, especially for large storage tanks, the advantages are more obvious; (5) The walking device is convenient to arrange. The walking and flushing actions can be completed with the power system of one flushing pump group; (6) Different working states can be easily adjusted through the electric control valve, which is very convenient to control. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0039] Figure 1 This is a schematic diagram of the structure of the present invention.

[0040] Figure 2 for Figure 1 A schematic diagram of the AA section.

[0041] Figure 3 This is a schematic diagram of the rotating connector in this invention.

[0042] Figure 4 This is a schematic diagram of the vibrator in use according to the present invention.

[0043] Figure 5 This is a schematic diagram of the vibrator in use according to the present invention.

[0044] Figure 6 This is a schematic diagram of the vibrator in use according to the present invention.

[0045] Figure 7 This is a schematic diagram of the vibrator in use according to the present invention.

[0046] Figure 8 This is a schematic cross-sectional view of the suspended scraper of the present invention.

[0047] In the diagram: 1. Storage tank; 2. Supply pipe device; 21. Rewinding motor; 22. Rewinding drum; 23. Bearing; 24. Rotatable pressure pipe connector; 25. Flushing pipe; 3. Flushing pump set; 31. First check valve; 32. Second check valve; 33. Third check valve; 34. Booster pump; 35. Flushing pump; 36. Overflow valve; 37. Crankshaft; 38. Booster pump motor; 4. Flushing frame; 41. Nozzle; 42. Overhead scraper; 5. Traveling device; 51. Reversing valve; 52. Travel motor. 53. Walking wheel, 54. Drive wheel, 55. Walking seat, 56. Stop valve, 6. Partition wall, 7. Flushing water storage area, 8. Regulating tank inlet, 9. Flushing track, 91. Synchronous belt, 10. Regulating tank water storage area, 11. Flushing water storage area inlet pipe, 12. Drainage and sludge discharge area, 13. Sludge pump, 14. Gravity sludge discharge pipe, 15. Overflow retaining wall, 16. Regulating tank bottom, 17. Liquid level sensor, 18. Sediment sludge, 19. Limit lifting rod, 20. Track column, 100. Detailed Implementation

[0048] Example 1:

[0049] like Figures 1-5 Among them, an automatic flushing system for a storage tank includes a flushing track 9, a traveling device 5, a flushing frame 4, and a supply pipe device 2;

[0050] like Figure 1 In the process, a flushing track 9 is provided in the regulating tank 1. A walking device 5 is provided on the flushing track 9 to travel along the flushing track 9. A flushing frame 4 is provided on the walking device 5. The flushing frame 4 is provided with multiple nozzles 41 for flushing the sediment sludge 18 at the bottom 16 of the regulating tank. The flushing frame 4 is connected to the flushing pump group 3 through a flushing pipe 25. The flushing track 9 is supported by multiple track columns 20. The track columns 20 are fixed with pre-embedded flange foundations. The combination of flushing track 9 and walking device 5 can significantly save installation costs.

[0051] like Figure 6 The device also includes a pipe supply device 2, on which the flushing pipe 25 is wound on the winding drum 22 of the pipe supply device 2 to supply the flushing pipe 25 as the traveling device 5 travels.

[0052] Preferred solutions include Figure 1 In the middle of the regulating reservoir 1, there is a regulating reservoir storage area 10. One end of the regulating reservoir storage area 10 is provided with a flushing water storage area 7, and the other end is provided with a drainage and sludge discharge area 12.

[0053] An overflow baffle 15 is provided between the water storage area 10 of the regulating tank and the flushing water storage area 7 so that the supernatant of the water storage area 10 overflows into the flushing water storage area 7.

[0054] The bottom of the drainage and sludge discharge area 12 is lower than the bottom of the water storage area 10 of the regulating tank to facilitate the discharge of sludge. A gravity sludge discharge pipe 14 is provided in the drainage and sludge discharge area 12.

[0055] Preferred solutions include Figure 1 In the middle, the gravity sludge discharge pipe 14 is equipped with a rotatable turbine blade inside, and the gravity sludge discharge pipe 14 is also equipped with a gate.

[0056] Preferred solutions include Figure 1 In the middle, the flushing water storage area 7 is provided with a flushing water storage area inlet pipe 11, and the drainage and sludge discharge area 12 is provided with a regulating tank inlet 8;

[0057] A mud pump 13 is also provided in the drainage and sludge discharge area 12 for discharging mud under pressure.

[0058] Preferred solutions include Figure 4 In the middle, a camera 100 is installed above the regulating tank 1. The camera 100 is used to observe the thickness of the deposited silt 18.

[0059] A level sensor 17 is also installed in the water storage area 10 and the flushing water storage area 7 of the regulating tank. The level sensor 17 is used to control the water intake of the regulating tank 1. When the water level in the regulating tank 1 reaches the preset position, the water intake is stopped.

[0060] Preferred solutions include Figure 6 In the process, the structure of the pipe supply device 2 is as follows: the winding drum 22 is connected to the winding motor 21. The winding motor 21 is a constant torque motor so that the winding drum 22 maintains a certain torque. In the walking working state, when the tension on the rinsing pipe 25 is greater than the output torque of the winding motor 21, the pipe is fed; when the tension on the rinsing pipe 25 is less than the output torque of the winding motor 21, the pipe is wound. In the rinsing state, the winding motor 21 is de-energized and does not work.

[0061] The end of the rinsing pipe 25 passes through the side wall of the winding drum 22 and exits from the axis. A rotatable pressure pipe connector 24 is provided at the end of the rinsing pipe 25. The rinsing pipe 25 is a rubber tube with a steel mesh inner core. This structure prevents the rinsing pipe 25 from deforming during winding.

[0062] Preferred solutions include Figure 6 , 7 In the middle, the structure of the walking device 5 is as follows: a walking motor 52 is fixed on the walking seat 55, the walking motor 52 is connected to the walking wheel 53, the wheel surface of the walking wheel 53 contacts the washing track 9, and drives the walking device 5 to walk;

[0063] like Figure 7 In the middle, a swingable washing frame 4 is provided on the walking seat 55. The bottom of the washing frame 4 is provided with a rigid pipe extending horizontally, and multiple nozzles 41 are provided on the rigid pipe.

[0064] Preferred solutions include Figure 7 , 8In the middle, the bottom of the horizontal extension section at the bottom of the flushing frame 4 is also provided with a suspended scraper 42, which is used to scrape away the sludge. A preferred embodiment is as follows: Figure 8 In this context, the suspended scraper 42 is in the shape of an anchor; preferably, as shown in the example below. Figure 7 In this design, the bottom of the suspended scraper 42 is also provided with teeth. When the sludge is thick, the moving suspended scraper 42 rests on the surface of the sludge, and the teeth of the suspended scraper 42 can scrape up the surface of the sludge under the action of the anchor shape, which is more efficient than the sludge discharge efficiency of flushing. It should be noted that the horizontal projection of the nozzle 41 is located between the teeth of the suspended scraper 42.

[0065] like Figure 6 In this structure, a reversing valve 51 is provided at the inlet of the travel motor 52. Through the reversing valve 51, the flushing pipe 25 is connected to the travel motor 52. The output port of the travel motor 52 is connected to the nozzle 41 through the reversing valve 51. The travel motor 52 and the nozzle 41 form a series structure. The function of the reversing valve 51 is to switch.

[0066] Preferred solutions include Figure 6 The flushing pump group 3 includes at least one flushing pump 35 and a booster pump 34. The flushing pump 35 and the booster pump 34 are connected in parallel. A second one-way valve 32 is provided at the outlet of the flushing pump 35. An overflow valve 36 is also connected in parallel upstream of the second one-way valve 32. When the second one-way valve 32 cannot be opened, the overflow valve 36 is activated and the water flows back to the inlet of the flushing pump 35.

[0067] A shut-off valve 56 is also provided, and the flushing pipe 25 is connected to the nozzle 41 through the shut-off valve 56 to form a short-circuit structure. With this structure, it can directly enter the flushing mode without going through the travel motor 52 to the nozzle 41.

[0068] The output pressure of the booster pump 34 is greater than the output pressure of the flushing pump 35. Preferably, the booster pump 34 is a single-cylinder or multi-cylinder piston pump, and the flushing pump 35 is a multi-stage centrifugal pump. The control system, such as a PLC or industrial computer, can control the shut-off valve 56 to freely switch between the walking mode and the flushing mode. When the shut-off valve 56 is open, the walking device 5 operates in the stationary flushing mode, and the corresponding winding motor 21 is also de-energized. When the shut-off valve 56 is closed, the walking device 5 operates in the walking mode and moves along the flushing track 9. At this time, the winding motor 21 is also in operation, straightening the flushing pipe 25 and preventing the flushing pipe 25 from winding.

[0069] Preferred solutions include Figure 1 In the process, the flushing track 9 is U-shaped, and a partition wall 6 is provided between the U-shaped flushing tracks 9. The height of the partition wall 6 is lower than the height of the flushing track 9.

[0070] The flushing track 9 is supported on the bottom 16 of the storage tank by multiple track columns 20;

[0071] A limiting lifting rod 19 is provided on the track column 20 at the initial position of the walking device 5. When the walking device 5 is in the initial position, the limiting lifting rod 19 lifts the washing frame 4, causing the nozzle 41 to leave the water surface. This structure prevents the bottom of the washing frame 4 from being blocked by silt due to prolonged immersion in water.

[0072] Example 2:

[0073] A method using the above-mentioned automatic flushing system for regulating storage tanks includes the following steps:

[0074] S1. During rainy weather, the regulating reservoir 1 begins to store water. When the water level in the regulating reservoir 1 exceeds the overflow baffle 15, water enters the flushing storage area 7. This continues until the level sensor 17 detects that the water level in the water storage area 10 of the regulating reservoir has reached the highest regulating water level. Then, the gate of the regulating reservoir 1 closes and stops the water intake.

[0075] S2. After the weather clears up, the water storage area 10 of the regulating tank begins to drain water. After the supernatant of the water storage area 10 of the regulating tank is drained, the regulating tank 1 enters the flushing and sludge removal mode.

[0076] S3. Start the winding motor 21. The winding motor 21 outputs a constant torque to keep the rinsing pipe 25 taut.

[0077] S4. Start the booster pump 34 and flushing pump 35 of the flushing pump group 3. When the booster pump 34 enters the power stroke, the water drawn in from the flushing water storage area 7 passes through the reversing valve 51 and enters the walking motor 52, driving the walking motor 52 to rotate. The discharged water enters the nozzle 41 of the flushing frame 4 and is sprayed out, thus completing the flushing function. The walking device 5 moves along the flushing track 9 from the initial position. The flushing frame 4 is lowered after leaving the limit lifting rod 19, and the high-pressure water flow flushes the sediment sludge 18 at the bottom of the storage tank 16. This scheme is used when the sludge accumulation is not thick and has not dried out.

[0078] When the shut-off valve 56 is open, the flushing frame 4 enters the in-situ flushing mode. In the in-situ flushing mode, the booster pump 34 or the flushing pump 35 can be started separately depending on the condition of the sludge. For thicker sludge, the booster pump 34 or the flushing pump 35 need to be started simultaneously. While the booster pump 34 drives the suspended scraper 42 to scrape the sludge, the nozzle 41 performs high-pressure water flushing.

[0079] S5. When the walking device 5 has completed the journey of the rinsing track 9, the camera 100 checks the rinsing effect and controls the reversing valve 51 to reverse, and the walking device 5 returns; at this time, the winding motor 21 works to wind up the rinsing pipe 25.

[0080] By controlling the working state of the booster pump 34, the walking speed and stopping position of the walking device 5 can be controlled; when the booster pump 34 is turned on, the walking device 5 walks faster and can effectively scrape mud. When the booster pump 34 is turned off, the walking device 5 walks slower.

[0081] S6. After rinsing is completed, start mud pump 13 to force mud discharge;

[0082] The above steps enable automatic flushing of sediment in the storage tank.

[0083] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An automatic flushing system for a water storage tank, characterized in that: Including rinsing Track (9), walking device (5), flushing rack (4) and supply pipe device (2); A flushing track (9) is provided in the storage tank (1). A walking device (5) is provided on the flushing track (9) to walk along the flushing track (9). A flushing frame (4) is provided on the walking device (5). Multiple nozzles (41) are provided on the flushing frame (4) for flushing the sediment (18) at the bottom (16) of the storage tank. The flushing frame (4) is connected to the flushing pump group (3) through the flushing pipe (25). It is also provided with a pipe supply device (2), and the flushing pipe (25) is wound on the winding drum (22) of the pipe supply device (2) to supply the flushing pipe (25) as the walking device (5) moves. The structure of the pipe supply device (2) is as follows: the winding drum (22) is connected to the winding motor (21). The winding motor (21) is a constant torque motor so that the winding drum (22) maintains a certain torque. When the tension on the flushing pipe (25) is greater than the output torque of the winding motor (21), the pipe is fed. When the tension on the flushing pipe (25) is less than the output torque of the winding motor (21), the pipe is taken back. The end of the flushing pipe (25) passes through the side wall of the winding drum (22) and exits from the shaft. A rotatable pressure pipe joint (24) is provided at the end of the flushing pipe (25). The structure of the walking device (5) is as follows: a walking motor (52) is fixed on the walking seat (55), the walking motor (52) is connected to the walking wheel (53), the wheel surface of the walking wheel (53) is in contact with the washing track (9), and the walking device (5) is driven to walk; A swingable flushing rack (4) is provided on the walking seat (55). A rigid pipe extending horizontally is provided at the bottom of the flushing rack (4), and multiple nozzles (41) are provided on the rigid pipe. A reversing valve (51) is provided at the inlet of the walking motor (52). The flushing pipe (25) is connected to the walking motor (52) through the reversing valve (51). The output port of the walking motor (52) is connected to the nozzle (41) through the reversing valve (51). The walking motor (52) and the nozzle (41) form a series structure. The regulating reservoir (1) has a water storage area (10) in the middle. One end of the water storage area (10) is provided with a flushing water storage area (7), and the other end is provided with a drainage and sludge discharge area (12). An overflow baffle (15) is provided between the water storage area (10) of the regulating tank and the flushing water storage area (7) so that the supernatant of the water storage area (10) overflows into the flushing water storage area (7). The bottom of the drainage and sludge discharge area (12) is lower than the bottom of the water storage area (10) of the regulating tank, and a gravity sludge discharge pipe (14) is provided in the drainage and sludge discharge area (12).

2. The automatic flushing system for the storage tank according to claim 1, characterized in that: The gravity sludge discharge pipe (14) is equipped with a rotatable turbine blade and a gate.

3. The automatic flushing system for the regulating tank according to claim 1, characterized in that: in The flushing water storage area (7) is equipped with a flushing water storage area inlet pipe (11), and the drainage and sludge discharge area (12) is equipped with a regulating tank inlet (8). A mud pump (13) is also provided in the drainage and mud discharge area (12) for discharging mud by pressure.

4. The automatic flushing system for the regulating tank according to claim 1, characterized in that: in A camera (100) is installed above the storage tank (1) to observe the thickness of the deposited silt (18); Liquid level sensors (17) are also installed in the water storage area (10) and flushing water storage area (7) of the regulating reservoir.

5. The automatic flushing system for the regulating tank according to claim 1, characterized in that: The flushing pump group (3) includes at least one flushing pump (35) and a booster pump (34). The flushing pump (35) and the booster pump (34) are connected in parallel. A one-way second check valve (32) is provided at the outlet of the flushing pump (35). An overflow valve (36) is also connected in parallel upstream of the second check valve (32). When the second check valve (32) cannot be opened, the overflow valve (36) is activated, and water flows back to the inlet of the flushing pump (35). A shut-off valve (56) is also provided, and the flushing pipe (25) is connected to the nozzle (41) through the shut-off valve (56) to form a short-circuit structure. The output pressure of the booster pump (34) is greater than the output pressure of the flushing pump (35).

6. The automatic flushing system for the regulating tank according to claim 5, characterized in that: The flushing track (9) is U-shaped, and a partition wall (6) is provided between the U-shaped flushing tracks (9). The height of the partition wall (6) is lower than the height of the flushing track (9). The flushing track (9) is supported on the bottom (16) of the storage tank by multiple track columns (20); A limiting lifting rod (19) is provided on the track column (20) at the initial position of the walking device (5). When the walking device (5) is in the initial position, the limiting lifting rod (19) lifts the flushing frame (4) so ​​that the nozzle (41) leaves the water surface.

7. A method using the automatic flushing system for a storage tank according to any one of claims 1 to 6, characterized in that: Includes the following steps: S1. During rainy weather, the storage tank (1) begins to store water. The water level of the storage tank (1) exceeds the overflow barrier (15), causing water to enter the flushing storage area (7) until the level sensor (17) detects that the water level of the storage area (10) of the storage tank reaches the highest storage water level. Then the gate of the storage tank (1) is closed, and the water intake stops. S2. After the weather clears up, the water storage area (10) of the regulating tank begins to drain water. After the supernatant in the water storage area (10) of the regulating tank is drained, the regulating tank (1) enters the flushing and sludge discharge mode. S3. Start the winding motor (21). The winding motor (21) outputs a constant torque to keep the flushing pipe (25) taut. S4. Start the booster pump (34) and flushing pump (35) of the flushing pump group (3). When the booster pump (34) enters the power stroke, the water sucked from the flushing water storage area (7) drives the walking motor (52) to rotate. The walking device (5) moves from the initial position along the flushing track (9). The flushing frame (4) is lowered, and the high-pressure water flow flushes the sediment (18) at the bottom (16) of the storage tank. When the shut-off valve (56) is turned on, the flushing rack (4) enters the in-situ flushing mode; S5. When the walking device (5) has completed the journey of the flushing track (9), the camera (100) checks the flushing effect, controls the reversing valve (51) to reverse, and the walking device (5) returns. By controlling the working state of the booster pump (34), the walking speed and stopping position of the walking device (5) can be controlled; S6. After rinsing is completed, start the mud pump (13) to force mud discharge; The above steps enable automatic flushing of sediment in the storage tank.

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