Vehicle frame fuel tank cleaning water circulation system

Abstract

The utility model discloses a frame oil tank cleaning water circulation system which comprises a water purifying tank, a plunger pump and a plunger pump water inlet pipe, a water inlet of the plunger pump is connected to the water purifying tank, a high-pressure water outlet pipe and a high-pressure cleaning gun through the plunger pump water inlet pipe, and a water outlet of the plunger pump is connected to the high-pressure cleaning gun through the high-pressure water outlet pipe. The high-pressure cleaning gun is used for spraying clean water and a waste water tank, the waste water tank is connected with a sewage tank, a first sewage return pipe and a second sewage return pipe, the waste water tank is connected to the sewage tank and a sewage pump through the first sewage return pipe and the second sewage return pipe, and the sewage pump is connected with the waste water tank and a filter. The sewage pump can be used for filtering sewage in the wastewater tank through the filter and then re-feeding the sewage into the water purification tank; according to the vehicle frame oil tank cleaning water circulation system, the problems of bacterium breeding and pipeline pollution are prevented, and the cleanliness and operation reliability of the whole water circulation system are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial cleaning and water circulation treatment technical field, concretely relates to a frame oil tank cleaning water circulation system. BACKGROUND

[0002] In the production process of the existing frame oil tank, in order to ensure the cleanliness inside the oil tank, it needs to be internally cleaned at a specific cleaning station. The usual cleaning method is to draw clean water from the clean water tank through the plunger pump, and the water is sprayed to the inner surface of the oil tank through the cleaning head. After cleaning, the sewage produced is discharged to the sewage tank through the sewage pipe. Then, the sewage in the sewage tank is filtered and returned to the clean water tank, forming a water circulation system, thereby saving water resources.

[0003] However, this process has the following significant shortcomings in actual operation: first, the distance between the cleaning station and the water circulation system is far, and usually to prevent the cleaning pipeline from hindering the frame carrying, the pipeline is arranged under the ground or above the frame. This layout increases the difficulty of cleaning and maintaining the pipeline. In the cleaning process, the water quality gradually deteriorates after the clean water is used repeatedly, resulting in an increase in impurities in the sewage. However, the current filter device is difficult to completely filter out these impurities, so after a period of filtration, the system needs to be shut down for maintenance and cleaning, including completely discharging the sewage to replace the clean water.

[0004] Secondly, the existing drainage process is inefficient. When cleaning the sewage, the water in the waste water tank is usually first discharged into the sewage tank, and then discharged through the drainage port of the sewage tank. However, since the two water tanks share one drainage port, the drainage speed is limited, which prolongs the overall drainage time and reduces the efficiency of the cleaning process. At the same time, sewage often remains in the sewage pipe and the backwater pipe, which not only increases the pollution inside the pipeline, but also may cause bacteria to breed, thereby affecting the cleanliness of the pipeline and further exacerbating the pollution problem of the water circulation system. Therefore, the existing frame oil tank cleaning system needs to be improved to solve the problems of sewage remaining in the pipeline, low filtration efficiency and long drainage time. TECHNICAL CONTENT

[0005] The utility model aims at providing a frame oil tank cleaning water circulation system, solving the problem that the existing frame oil tank cleaning system needs to be improved to solve the problem of sewage remaining in the pipeline, low filtration efficiency and long drainage time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a frame oil tank cleaning water circulation system, comprising:

[0007] a clean water tank;

[0008] a plunger pump and a plunger pump water inlet pipe, the water inlet of the plunger pump is connected to the clean water tank through the plunger pump water inlet pipe;

[0009] A high-pressure water outlet pipe and a high-pressure cleaning gun, the plunger pump water outlet is connected to the high-pressure cleaning gun through the high-pressure water outlet pipe, and the high-pressure cleaning gun is used for spraying clean water;

[0010] A waste water tank, the waste water tank is connected with a sewage tank;

[0011] A first sewage backwater pipe and a second sewage backwater pipe, the waste water tank is connected to the sewage tank through the first sewage backwater pipe and the second sewage backwater pipe;

[0012] A sewage pump, the sewage pump is connected with the waste water tank and a filter, and the sewage pump can filter sewage in the waste water tank through the filter and then send the sewage into the clean water tank.

[0013] Preferably, the clean water tank is provided with a high liquid level meter and a low liquid level meter, the high liquid level meter and the low liquid level meter are connected with an electric control cabinet, and the electric control cabinet is electrically connected with an electric ball valve.

[0014] Preferably, the waste water tank is provided with a sewage liquid level meter, the sewage liquid level meter is connected to the electric control cabinet, and the electric control cabinet is electrically connected with a first sewage ball valve and a backwater ball valve.

[0015] Preferably, the sewage tank is communicated with the second sewage backwater pipe and the first sewage backwater pipe, and the second sewage backwater pipe and the first sewage backwater pipe are communicated with a sewage pump.

[0016] Preferably, the sewage tank is provided with a filter liquid level meter, the filter liquid level meter is connected with an electric control cabinet, the electric control cabinet is electrically connected with a sewage pump, the sewage pump is connected with a filter, and the filter enters the clean water tank through a pipeline.

[0017] Preferably, the sewage tank and the waste water tank are both provided with a bottom drain, the bottom drain is connected with a second sewage ball valve and a first sewage ball valve, and the bottom drain is connected with a first drain pipe and a second drain pipe through the second sewage ball valve and the first sewage ball valve respectively.

[0018] Preferably, the high-pressure cleaning gun is connected to the water outlet of the plunger pump through the high-pressure water outlet pipe, and the water inlet of the plunger pump is connected to the clean water tank through a plunger pump water inlet pipe.

[0019] Preferably, the high-pressure cleaning gun is connected with an air pump through a pipeline.

[0020] Preferably, the air pump is connected with a high-pressure ball valve, and the air pump is connected to the high-pressure cleaning gun through the high-pressure ball valve.

[0021] Preferably, the bottom of the sewage tank is provided with a drain, and the drain is connected to the first drain pipe through a second sewage ball valve.

[0022] From the above technical scheme can know, the utility model has the following beneficial effects:

[0023] The vehicle frame oil tank cleaning water circulation system, through setting high and low liquid level gauges and electric control cabinet control electric ball valve in the clean water tank and sewage tank, realizes water tank automatic water supplement and water level monitoring function, guarantees water stability in the cleaning process, avoids the problem that the cleaning effect is affected due to the water level being too low, the system adopts independent blowdown ball valve and pipeline design of the waste water tank and the sewage tank, separates the drainage path, not only improves the drainage speed and shortens the drainage time, but also effectively avoids the low efficiency problem caused by the two water tanks sharing the drainage port, thereby greatly improves the overall efficiency of the cleaning process, in addition, through setting filter liquid level gauge in the sewage tank and sending sewage into the filter by the sewage pump for treatment, realizes efficient filtration of the water circulation system, the filtered water enters the clean water tank and is recycled, so that the cleaning water quality is maintained well, the use cycle of the cleaning liquid is prolonged, the frequency of clean water supplement is reduced, water resources are saved, the system also generates high-pressure spray through the combination of the air pump, the high-pressure ball valve and the high-pressure cleaning gun, ensures that the inner surface of the vehicle frame oil tank is fully cleaned, effectively improves the cleaning effect, in the aspect of pipeline cleaning, through the setting of the independent blowdown pump and the backwater ball valve, it is ensured that there is no residual in the backwater pipeline when sewage is discharged, the influence of sewage retention on the pipeline environment is avoided, the problems of bacterial growth and pipeline pollution are prevented, thereby improving the cleanliness and operation reliability of the entire water circulation system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole structure schematic view of the utility model;

[0025] Figure 2 It is another angle whole structure schematic view of the utility model;

[0026] Figure 3 It is Figure 2 It is an enlarged view of A in the middle.

[0027] In the figure: 1, electric control cabinet;2, plunger pump;3, filter 4, sewage pump;5, waste water tank;6, sewage tank;7, clean water tank;8, electric ball valve;9, blowdown pump;10, high-pressure cleaning gun;11, high-pressure water outlet pipe;12, plunger pump water inlet pipe;13, first sewage backwater pipe;14, second sewage backwater pipe;15, first drainage pipe;16, second drainage pipe;17, high-pressure ball valve;18, air pump;19, first blowdown ball valve;20, second blowdown ball valve;21, backwater ball valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1-3 As shown, a frame fuel tank cleaning water circulation system includes: a clean water tank 7, a plunger pump 2, and a plunger pump inlet pipe 12. The water inlet of the plunger pump 2 is connected to the clean water tank 7 via the plunger pump inlet pipe 12; the water outlet of the plunger pump 2 is connected to a high-pressure cleaning gun 10 via a high-pressure outlet pipe 11, which is used to spray clean water. The wastewater tank 5 is connected to the sewage tank 6, which is connected to the sewage tank 6 via a first sewage return pipe 13 and a second sewage return pipe 14. The sewage pump 4 is connected to the wastewater tank 5 and the filter 3, and is used to filter the sewage in the wastewater tank 5 through the filter 3 and then return it to the clean water tank 7.

[0030] This system uses a clean water tank 7 as a source of clean water, and the plunger pump 2 delivers the clean water to the high-pressure cleaning gun 10, which cleans the vehicle frame or fuel tank by high-pressure jetting. The wastewater generated by cleaning enters the wastewater tank 5 by gravity flow or pumping, and is then transported to the filter 3 by the sewage pump 4 for filtration treatment. The filtered water enters the clean water tank 7 for recycling, thereby achieving effective utilization of water resources and filtration treatment of pollutants. The system achieves water recycling and effectively saves water resources through the synergistic effect of the clean water tank, sewage pump, filter and high-pressure cleaning gun. The filtered water can be used again for cleaning, which reduces the discharge of wastewater and meets environmental protection requirements. In addition, the high-pressure jet cleaning capability of the high-pressure cleaning gun is utilized to significantly improve the cleaning effect, making it suitable for large-scale cleaning needs.

[0031] In practice, the pressure and flow rate of the plunger pump 2 can be adjusted based on the cleaning target to accommodate varying cleaning intensities. Furthermore, the filter element type and filtration accuracy of the filter 3 can be changed to meet different water reuse standards. The clean water tank 7 can be constructed of various materials and capacities depending on the site's space availability.

[0032] The clean water tank 7 is provided with a high liquid level gauge and a low liquid level gauge, and the high liquid level gauge and the low liquid level gauge are electrically connected with the electric control cabinet 1. The electric control cabinet 1 is further electrically connected with an electric ball valve 8. The high liquid level gauge and the low liquid level gauge monitor the water level of the clean water tank 7 in real time. When the water level reaches the low liquid level, the electric control cabinet 1 controls the electric ball valve 8 to be closed to prevent the idling protection of the plunger pump 2; when the water level reaches the high liquid level, the electric control cabinet 1 controls the electric ball valve 8 to be opened to keep the water level balanced, ensuring the continuity of the cleaning operation. The system realizes the accurate management of the water level of the clean water tank through the automatic detection of the water level and the linkage control of the electric ball valve, ensures the stable supply of the cleaning water, avoids the damage of the equipment due to idling, prolongs the service life of the equipment and reduces the maintenance cost.

[0033] According to the actual use environment, the measurement mode of the high liquid level gauge and the low liquid level gauge can be replaced by an ultrasonic liquid level sensor to further improve the water level monitoring accuracy. In addition, the control program of the electric control cabinet can be adjusted to adapt to other liquid level control logic.

[0034] The wastewater tank 5 is provided with a sewage liquid level gauge connected to the electric control cabinet 1. The electric control cabinet 1 is electrically connected with a first sewage ball valve 19 and a backwater ball valve 21. The sewage liquid level gauge monitors the water level in the wastewater tank 5. When the wastewater reaches a set height, the sewage liquid level gauge sends a signal to the electric control cabinet 1, and the electric control cabinet 1 automatically controls the opening and closing of the first sewage ball valve 19 and the backwater ball valve 21, thereby realizing the timely discharge and recovery control of the wastewater. Through the real-time monitoring of the sewage liquid level gauge, overflow of the wastewater tank 5 due to excessive water level can be avoided, and the efficiency of wastewater discharge and recovery is ensured, improving the cleaning and maintenance convenience of the system.

[0035] When the system needs to handle different types of wastewater, the height of the sewage liquid level gauge can be adjusted or replaced by a pressure sensor to further improve the flexibility of wastewater monitoring. The control logic of the sewage ball valve can also be optimized according to the sewage demand.

[0036] The sewage tank 6 is connected with a second sewage backwater pipe 14 and a first sewage backwater pipe 13, and the second sewage backwater pipe 14 and the first sewage backwater pipe 13 are connected with a sewage pump 9. The sewage pump 9 flows the wastewater in the sewage tank 6 back to the wastewater tank 5 through the first sewage backwater pipe 13 and the second sewage backwater pipe 14, ensuring the circulation of the sewage and providing multi-stage filtration conditions. This structure design enables the wastewater to circulate in multiple sewage tanks, further reducing the amount of cleaning water and optimizing water resource utilization. Multi-stage filtration reduces the content of pollutants in the water, improving the quality of wastewater reuse.

[0037] The diameter or material of the backwater pipe can be adjusted according to the composition of the sewage to adapt to sewage of different concentrations and compositions. In addition, the model and power of the sewage pump can also be replaced according to the processing capacity requirement.

[0038] The sewage tank 6 is provided with a filter liquid level gauge connected to the electric control cabinet 1, and the electric control cabinet 1 is electrically connected to the sewage pump 4. The sewage pump 4 is connected to the filter 3, and the filter 3 enters the clean water tank 7 through a pipeline. The filter liquid level gauge monitors the liquid level in the sewage tank 6. When the liquid level reaches a certain height, the filter liquid level gauge sends a signal to the electric control cabinet 1, and the electric control cabinet 1 starts the sewage pump 4 to pump the sewage to the filter 3 for filtration. The filtered water is returned to the clean water tank 7 through a pipeline, thereby realizing the cyclic purification of wastewater. Through the cooperative control of the filter liquid level gauge and the electric control cabinet, the timely filtration of sewage is ensured, and the problem of overflow caused by high liquid level in the sewage tank is effectively avoided. At the same time, through the treatment of the filter, the water quality of the recycled water is greatly improved, which helps to prolong the service life of the equipment and improve the cleaning effect.

[0039] The filter 3 can select different filtering precision according to different water quality requirements, or replace the filter element material to adapt to different types of sewage treatment needs. The power and displacement of the sewage pump 4 can also be adjusted according to the size of the sewage tank and the filtering flow demand to optimize the system operation efficiency.

[0040] The sewage tank 6 and the wastewater tank 5 are both provided with a bottom drain, which is connected with a second blowdown ball valve 20 and a first blowdown ball valve 19, and is connected to a first drain pipe 15 and a second drain pipe 16 through the second blowdown ball valve 20 and the first blowdown ball valve 19 respectively. The bottom drain is used for periodically discharging the sedimentary wastewater in the sewage tank 6 and the wastewater tank 5. When it is necessary to discharge sewage, the electric control cabinet 1 controls the first blowdown ball valve 19 and the second blowdown ball valve 20 to open, and the sewage is discharged from the system through the corresponding drain pipes 15 and 16 to maintain the cleanliness of the inside of the tank and the normal operation of the system.

[0041] The design of the drainage system facilitates the periodic cleaning of the bottom sediments of the wastewater tank and the sewage tank, avoiding the influence of sediment accumulation on the cleaning water quality. The automatic control of the electric control cabinet on the blowdown process reduces the workload of manual operation and improves the cleaning and maintenance efficiency of the system.

[0042] According to the specific wastewater properties and discharge requirements, the drainage pipe material and diameter can be replaced as needed, and the number and configuration of the blowdown ball valves can also be flexibly adjusted to meet the drainage needs of different tanks.

[0043] The high-pressure cleaning gun 10 is connected to the water outlet of the plunger pump 2 through a high-pressure water outlet pipe 11, and the water inlet of the plunger pump 2 is connected to the clean water tank 7 through a plunger pump water inlet pipe 12. The plunger pump 2 draws clean water from the clean water tank 7 and pressurizes it, which is delivered to the high-pressure cleaning gun 10 through the high-pressure water outlet pipe 11. The cleaning gun 10 uses high-pressure water flow to wash the oil tank and the frame, removing surface dirt. Through high-pressure jet cleaning, the surface dirt of the oil tank and the frame can be quickly and effectively removed, improving the cleaning efficiency. The system high-pressure water flow can be adjusted to adapt to different cleaning objects and working conditions, enhancing the flexibility of the system.

[0044] The length or material of the high-pressure water outlet pipe can be adjusted according to the cleaning pressure requirements to improve the water flow intensity and durability of the high-pressure cleaning gun. The pressure parameters of the plunger pump can also be adjusted to adapt to different cleaning needs.

[0045] The high-pressure cleaning gun 10 is connected with an air pump 18 through a pipeline, which provides high-pressure gas for the high-pressure cleaning gun 10 to generate gas-liquid mixed spraying together with the water flow, further improving the cleaning effect and cleaning speed. The gas-liquid mixed spraying mode increases the impact force and coverage of the water flow, significantly improving the removal effect of stubborn stains. This design reduces the cleaning time and improves the cleaning efficiency, especially suitable for parts that need to be deeply cleaned.

[0046] The air pressure of the air pump 18 can be adjusted according to actual needs, or replaced with different types of air pumps to adapt to different gas needs. In addition, the gas flow and gas-water mixing ratio can also be controlled through the valve to meet the requirements of different cleaning conditions.

[0047] The air pump 18 is connected with a high-pressure ball valve 17, and the air pump 18 is connected to the high-pressure cleaning gun 10 through the high-pressure ball valve 17. The high-pressure ball valve 17 is used to control the on-off of the gas flow between the air pump 18 and the high-pressure cleaning gun 10. When gas spraying cleaning is needed, the electric control cabinet 1 opens the high-pressure ball valve 17, and the gas mixes with the water flow for high-pressure spraying cleaning. When gas spraying is not needed, the high-pressure ball valve 17 is closed to save gas source. The use of the high-pressure ball valve 17 realizes the on-demand use of gas spraying, optimizes the use efficiency of the system gas source, saves energy cost, and avoids excessive gas entering the system, reducing the wear and tear of the pipeline and components. The high-pressure ball valve 17 can be replaced with a solenoid valve to achieve more precise gas flow control. The type of air pump 18 can also be adjusted according to different gas supply requirements to adapt to different cleaning intensity needs.

[0048] The bottom of the sewage tank 6 is provided with a drain port, which is connected to the first drain pipe 15 through a second sewage ball valve 20. When it is necessary to discharge the sediment at the bottom of the sewage tank 6, the electric control cabinet 1 controls the second sewage ball valve 20 to open, and the waste water in the sewage tank 6 is discharged through the drain port and the first drain pipe 15, ensuring the cleanliness and smoothness of the system. This design facilitates the regular discharge of sediment at the bottom of the sewage tank 6, maintains the cleanliness and water quality stability of the water circulation system, and avoids the accumulation of dirt affecting the cleaning efficiency.

[0049] The size of the drain port can be adjusted according to the capacity of the sewage tank, and the sewage ball valve 20 can be replaced with different specifications of valves according to the drainage flow demand to improve the drainage efficiency.

[0050] Work process: the car frame oil tank to be cleaned is pushed to the cleaning station, and the high-pressure cleaning gun 10 is inserted into the car frame oil tank. At this time, the high-pressure cleaning gun 10 is fixed on the car frame oil tank by using the rawhide bandage. After the fixing is completed, the start button is pressed, the high-pressure spray is sprayed out through the high-pressure cleaning gun 10, the cleaning of the car frame oil tank is completed, the water replenishment button is pressed, the electric ball valve 8 is opened, the external water pipe is injected with clean water, the clean water is injected into the water tank 7 from the water inlet, the water tank 7 is provided with a high liquid level meter and a low liquid level meter at the highest water level and the lowest water level respectively, when the water level reaches the highest water level, the high liquid level meter senses the water level, the signal is fed back to the electric ball valve 8, the electric ball valve 8 is closed, and the water inlet is stopped, when the water level reaches the lowest water level, the low liquid level meter senses the water level, the signal is fed back to the electric ball valve 8, the electric ball valve 8 is opened, and the water inlet starts to inlet water, the plunger pump 2 is communicated with the high-pressure ball valve 17, one side of the high-pressure ball valve 17 is communicated with the air pump 18. When the start button is pressed, the plunger pump 2 is started, the high-pressure ball valve 17 and the high-pressure cleaning gun 10 are opened at the same time, the plunger pump 2 completes the water extraction through the plunger pump water return pipe 12, the water is squeezed into the high-pressure rubber pipe and the high-pressure ball valve, and enters the high-pressure cleaning gun 10, the high-pressure gas enters the high-pressure cleaning gun 10 through the high-pressure rubber pipe at the same time, the high-pressure cleaning gun 10 sprays the high-pressure water into high-pressure mist water flow to clean the car frame oil tank, after the workpiece is cleaned, the sewage enters the sewage tank 5; the sewage tank 5 is provided with a maximum sewage level, the maximum sewage level is provided with a sewage liquid level meter, when the water level of the sewage tank 5 reaches the maximum sewage level, the sewage liquid level meter sends a signal, the sewage starts to store, the first sewage ball valve 19 is closed, the water return ball valve 21 is opened, the sewage pump 9 extracts the sewage, so that the sewage sequentially passes through the second sewage water return pipe 14 and the first sewage water return pipe 13, and enters the sewage tank 6, the sewage storage is completed, the sewage tank 6 is provided with a filtering maximum water level, the filtering maximum water level is provided with a filtering liquid level meter.

[0051] When the sewage water level in the sewage tank 6 reaches the filtering liquid level meter, the sewage pump 9 stops working, so that the sewage water return pipe 13 is in a closed state, the sewage pump 4 is in a working state, the sewage pump 4 pumps the sewage in the sewage tank 6 into the filter 3 assembly, after the filtration is completed, the filtered water enters the water tank 7, the sewage tank 6 drains: the bottom of the sewage tank 6 is provided with a drain, the drain is provided with a second sewage ball valve 20, the second sewage ball valve 20 is communicated with the first drain pipe 15, the sewage is drained from the first drain pipe 15 to the outside, after the drainage is completed, the second sewage ball valve 20 is closed. The sewage tank 5 drains: the water return ball valve 21 is closed, and the first sewage ball valve 19 at the rear end of the sewage pump 9 is opened, after the sewage pump 9 is started, the sewage pump 9 extracts the sewage and discharges it from the second drain pipe 16 of the sewage tank 5, then the first sewage ball valve 19 and the water return ball valve 21 are opened at the same time, the water in the sewage discharge water pipe 13 is discharged, to prevent the sewage from remaining in the sewage discharge water pipe 13.

[0052] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frame tank washing water circulation system characterized by, It includes: A clean water tank (7); A plunger pump (2) and a plunger pump water inlet pipe (12), the water inlet of the plunger pump (2) is connected to the clean water tank (7) through the plunger pump water inlet pipe (12); A high-pressure water outlet pipe (11) and a high-pressure cleaning gun (10), the water outlet of the plunger pump (2) is connected to the high-pressure cleaning gun (10) through the high-pressure water outlet pipe (11), and the high-pressure cleaning gun (10) is used for spraying clean water; A waste water tank (5) connected with a sewage tank (6); A first sewage return pipe (13) and a second sewage return pipe (14), the waste water tank (5) is connected to the sewage tank (6) through the first sewage return pipe (13) and the second sewage return pipe (14); A sewage pump (4) connected with the waste water tank (5) and a filter (3), the sewage pump (4) can send the sewage in the waste water tank (5) back to the clean water tank (7) after filtering through the filter (3).

2. A frame tank washing water recirculation system according to claim 1, characterized in that: The clean water tank (7) is provided with a high liquid level meter and a low liquid level meter, the high liquid level meter and the low liquid level meter are connected with an electric control cabinet (1), and the electric control cabinet (1) is electrically connected with an electric ball valve (8).

3. A frame tank washing water recirculation system according to claim 1, characterized in that: The waste water tank (5) is provided with a sewage liquid level meter connected to the electric control cabinet (1), and the electric control cabinet (1) is electrically connected with a first sewage ball valve (19) and a return water ball valve (21).

4. A frame tank washing water recirculation system according to claim 1, characterized in that: The sewage tank (6) is communicated with the second sewage return pipe (14) and the first sewage return pipe (13), and the second sewage return pipe (14) and the first sewage return pipe (13) are communicated with a sewage pump (9).

5. A frame tank washing water recirculation system according to claim 1, characterized in that: The sewage tank (6) is provided with a filter liquid level meter connected with the electric control cabinet (1), the electric control cabinet (1) is electrically connected with the sewage pump (4), the sewage pump (4) is connected with the filter (3), and the filter (3) enters the clean water tank (7) through a pipeline.

6. A frame tank washing water recirculation system according to claim 1, characterized in that: The sewage tank (6) and the waste water tank (5) are both provided with a bottom drain, the bottom drain is connected with a second sewage ball valve (20) and a first sewage ball valve (19), and the bottom drain is connected with a first drain pipe (15) and a second drain pipe (16) through the second sewage ball valve (20) and the first sewage ball valve (19) respectively.

7. A frame tank washing water recirculation system according to claim 1, characterized in that: The high-pressure cleaning gun (10) is connected to the water outlet of the plunger pump (2) through the high-pressure water outlet pipe (11), and the water inlet of the plunger pump (2) is connected to the clean water tank (7) through the plunger pump water inlet pipe (12).

8. A frame tank washing water recirculation system according to claim 1, characterized in that: The high-pressure cleaning gun (10) is connected with an air pump (18) through a pipeline.

9. A frame tank washing water recirculation system according to claim 8, characterized in that: The air pump (18) is connected with a high-pressure ball valve (17), and the air pump (18) is connected to the high-pressure cleaning gun (10) through the high-pressure ball valve (17).

10. A frame tank washing water recirculation system according to claim 1, characterized in that: The bottom of the sewage tank (6) is provided with a drain, and the drain is connected to the first drain pipe (15) through the second sewage ball valve (20).

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