Cleaning device

Abstract

This utility model discloses a cleaning device for cleaning a transmission. The cleaning device includes a first reservoir, a first pipe, a second pipe, a second reservoir, and a cleaning agent container. The first reservoir stores waste oil recovered from the transmission. One end of the first pipe is connected in series with the first reservoir, and the other end is connected to the transmission. One end of the second pipe is connected to the transmission. The second reservoir stores oil supplied to the transmission and is connected to the other end of the second pipe. The cleaning agent container is connected to the other end of the second pipe and is connected in parallel with the second reservoir. This cleaning device combines pipes with similar flow directions, allowing some functions to be controlled uniformly with fewer control nodes. This avoids the complexity of each functional component having a separate solenoid valve and pump assembly connected in series, reduces the number of connecting pipes, and simplifies the piping structure of the cleaning device.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive equipment, and in particular to a cleaning device. Background Technology

[0002] After prolonged use, the performance of the transmission fluid in a car's automatic transmission will deteriorate. If it is not changed in time, it will cause malfunctions in the automatic transmission. An automatic transmission cleaning and oil change machine is a device that can automatically change and clean the transmission fluid.

[0003] To better meet users' needs for maintaining and repairing car transmissions, the functional modules of automatic transmission cleaning and oil change machines are constantly being expanded. Currently, they mainly include transmission fluid replacement modules and cleaning agent addition modules.

[0004] In the piping systems of existing automatic transmission cleaning and oil change machines, different functional components in each module are typically connected in series with different solenoid valves and pump assemblies. This allows for direct control of switching between different pipelines by controlling these solenoid valves and pump assemblies. This structure makes the piping connections of the entire control system complex and cumbersome, thereby reducing production efficiency, lowering product quality, and increasing the difficulty of production, installation, and maintenance. Utility Model Content

[0005] The main purpose of this utility model is to provide a cleaning device that solves the technical problem of complex and cumbersome pipe connections in existing cleaning devices.

[0006] In order to achieve the above-mentioned utility model objectives, this utility model proposes a cleaning device.

[0007] A cleaning device for cleaning a transmission, comprising:

[0008] The first reservoir is used to store waste oil recovered from the gearbox;

[0009] A first pipe, one end of which is connected in series with the first liquid storage tank, and the other end of which is connected to the gearbox;

[0010] A second pipe, one end of which is connected to the gearbox;

[0011] The second reservoir is used to store the oil supplied to the gearbox and is connected to the other end of the second pipe;

[0012] The cleaning agent container is connected to the other end of the second pipe and is connected in parallel with the second liquid storage tank.

[0013] In one embodiment, the cleaning device includes a third pipe, one end of which is connected to the first liquid storage tank and the other end of which is connected to the second pipe, and a first solenoid valve is provided on the third pipe.

[0014] In one embodiment, the cleaning device includes a first branch, one end of which is connected to the second pipe and the other end of which is connected to the cleaning agent container; a second solenoid valve is provided on the first branch.

[0015] In one embodiment, the cleaning device includes a second branch, one end of which is connected to the second pipe and the other end of which is connected to the second liquid storage tank; a third solenoid valve is provided on the second branch.

[0016] In one embodiment, a first viewing window is also provided on the second branch, and the liquid level of the first viewing window is the same as the liquid level of the second storage tank.

[0017] In one embodiment, the cleaning device includes a fourth pipe, a heater, and a first three-way valve. The first outlet and the second outlet of the first three-way valve are connected to the second pipe, the third outlet of the first three-way valve is connected to one end of the fourth pipe, and the other end of the fourth pipe is connected to the second liquid storage tank. The heater is disposed on the fourth pipe.

[0018] In one embodiment, a second viewing window is provided on the first pipe, and the liquid level of the second viewing window is the same as the liquid level of the first storage tank.

[0019] In one embodiment, the cleaning device includes a fifth pipe, a second three-way valve, and a sampling valve. The first outlet and the second outlet of the second three-way valve are respectively connected to the first pipe, the third outlet of the second three-way valve is connected to one end of the fifth pipe, and the other end of the fifth pipe is connected to the sampling valve.

[0020] In one embodiment, the cleaning device includes a sixth pipe, a seventh pipe, and a third three-way valve. One end of the sixth pipe is connected to the fifth pipe, and the other end of the sixth pipe is connected to the second pipe. The first outlet and the second outlet of the third three-way valve are connected to the second pipe, and the third outlet of the third three-way valve is connected to one end of the seventh pipe. The other end of the seventh pipe is connected to the first reservoir. A pump assembly is provided on the second pipe. The pump assembly is used to draw oil from the gearbox and sequentially flow it through the first pipe, the second three-way valve, the fifth pipe, the sixth pipe, the second pipe, the third three-way valve, and the seventh pipe into the first reservoir.

[0021] In one embodiment, the cleaning device further includes a ball valve disposed on the second pipe.

[0022] Beneficial effects:

[0023] This invention discloses a cleaning device for cleaning a transmission. The device includes a first reservoir, a first pipe, a second pipe, a second reservoir, and a cleaning agent container. The first reservoir stores waste oil recovered from the transmission. One end of the first pipe is connected in series with the first reservoir, and the other end is connected to the transmission. One end of the second pipe is connected to the transmission. The second reservoir stores oil supplied to the transmission and is connected to the other end of the second pipe. The cleaning agent container is connected to the other end of the second pipe and is connected in parallel with the second reservoir. This cleaning device employs a parallel connection of multiple components, such as the second reservoir being connected in parallel with the first reservoir, and the cleaning agent container being connected in parallel with both the first and second reservoirs. This structure combines pipes with similar flow directions and connects different components through branches, allowing some functions to be uniformly controlled with fewer control nodes. This avoids the complexity of each functional device having a separate solenoid valve and pump assembly connected in series, reducing the number of connecting pipes and simplifying the piping structure of the cleaning device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a cleaning device according to an embodiment of the present invention.

[0025] in:

[0026] 10. Gearbox;

[0027] 100. First liquid storage tank; 110. Second liquid storage tank; 111. Filler cap; 120. First electronic scale; 113. Second electronic scale;

[0028] 210. First Pipeline; 220. Second Pipeline; 221. First Branch Road; 222. Second Branch Road; 230. Third Pipeline; 240. Fourth Pipeline; 250. Fifth Pipeline; 260. Sixth Pipeline; 270. Seventh Pipeline; 280. Eighth Pipeline;

[0029] 300. Detergent container; 310. First filter; 320. Second filter

[0030] 400, First solenoid valve; 410, Ball valve; 420, Second solenoid valve; 430, Third solenoid valve; 440, First check valve; 450, Second check valve; 460, Sampling valve;

[0031] 500. Pump assembly; 510. First viewing window; 520. Second viewing window; 530. Heater;

[0032] 610. First three-way valve; 620. Second three-way valve; 630. Third three-way valve; 640. Fourth three-way valve;

[0033] 710. First pressure gauge; 720. Second pressure gauge.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] like Figure 1 As shown, in some embodiments, a cleaning device is provided for cleaning a transmission 10. The cleaning device includes a first reservoir 100, a first pipe 210, a second pipe 220, a second reservoir 110, and a cleaning agent container 300. The first reservoir 100 stores waste oil recovered from the transmission 10. One end of the first pipe 210 is connected in series with the first reservoir 100, and the other end of the first pipe 210 is connected to the transmission 10. One end of the second pipe 220 is connected to the transmission 10. The second reservoir 110 stores oil supplied to the transmission 10, and the second reservoir 110 is connected to the other end of the second pipe 220. The cleaning agent container 300 is connected to the other end of the second pipe 220 and is connected in parallel with the second reservoir 110. Specifically, this cleaning device can be a transmission cleaning and oil change machine.

[0040] The cleaning device employs a parallel connection of multiple components. For example, the second liquid storage tank 110 is connected in parallel with the first liquid storage tank 100, and the cleaning agent container 300 is connected in parallel with both the first liquid storage tank 100 and the second liquid storage tank 110. This structure allows some functions to be uniformly controlled through fewer control nodes, avoiding the complexity of each functional device having its own solenoid valve connected in series, reducing the number of connecting pipes, and simplifying the piping structure of the cleaning device.

[0041] During operation, waste oil from the transmission 10 is transported to the first reservoir 100 via the first pipe 210 for waste oil recycling. The second reservoir 110 stores new oil for lubricating the transmission 10, which is transported into the transmission 10 via the second pipe 220 to replace the waste oil. A cleaning agent container 300 is connected in parallel with the second reservoir 110 and also connected to the other end of the second pipe 220. The cleaning agent in the container 300 can be transported to the transmission 10 via the second pipe 220, enhancing the cleaning effect on the interior of the transmission 10. This structure enables the cleaning and oil change of the transmission 10.

[0042] Specifically, the cleaning device includes a first electronic scale 120, which carries a first liquid storage tank 100 and is used to obtain the weight of the first liquid storage tank 100.

[0043] Specifically, the cleaning device includes a second electronic scale 113, which carries a second liquid storage tank 110 and is used to obtain the weight of the second liquid storage tank 110.

[0044] In some embodiments, the cleaning device includes a third pipe 230, one end of which is connected to a first liquid storage tank 100 and the other end of which is connected to a second pipe 220. A first solenoid valve 400 is provided on the third pipe 230, and the first solenoid valve 400 is a two-way valve. The first solenoid valve 400 can control the opening and closing of the third pipe 230 and the flow rate of the third pipe 230.

[0045] It should be noted that the first liquid storage tank 100 and the second liquid storage tank 220 are connected in series through the third pipe 230, and the first liquid storage tank 100, the second liquid storage tank 110 and the cleaning agent container 300 are connected in parallel.

[0046] Specifically, the cleaning device includes a first filter 310. The first filter 310 is disposed on the third pipe 230. The first filter 310 is capable of filtering impurities in the waste oil in the first storage tank 100, so that the filtered waste oil can flow back into the second pipe 220.

[0047] During operation, when the first solenoid valve 400 opens, the waste oil in the first storage tank 100 flows through the third pipe 230, passing through the first filter 310. The first filter 310 typically contains filter media, such as filter screens or filter elements. These filter media have different pore sizes and structures. When waste oil passes through, impurities larger than the pore size of the filter media are trapped on one side, while oil that meets the pore size requirements can pass through smoothly. This achieves the filtration of impurities in the waste oil, reducing pollution generated when the waste oil is discharged externally.

[0048] In some embodiments, the cleaning device further includes a ball valve 410, which is disposed on the second pipe 220. When the first solenoid valve 400 is opened, the waste oil in the first storage tank 100 passes through the third pipe 230 and the first filter 310. The waste oil filtered by the first filter 310 is discharged to the outside through the ball valve 410. By opening the first solenoid valve 400 and the ball valve 410, the filtered waste oil in the first storage tank 100 can be smoothly discharged to the outside. This allows for timely cleaning of the first storage tank 100, freeing up space for subsequent recycling of more waste oil and ensuring the cleaning device's continuous recycling capacity for waste oil.

[0049] Specifically, ball valve 410 can be a manual ball valve.

[0050] In some embodiments, the cleaning apparatus further includes a pump assembly 500 disposed on the second conduit 220. The pump assembly 500 provides power to discharge waste oil from the first reservoir 100 through the first filter 310, the first solenoid valve 400, the second conduit 220, and the ball valve 410 in the third conduit 230 to the outside. Specifically, the pump assembly 500 may be an oil pump.

[0051] In addition, the pump assembly 500 can provide sufficient power for the flow of new oil in the second reservoir 110 and cleaning agent in the cleaning agent container 300, ensuring that new oil and cleaning agent can be delivered from the second reservoir 110 and the cleaning agent container 300 to the gearbox 10 respectively, thus ensuring the normal operation of the cleaning process.

[0052] In some embodiments, the cleaning device includes a first branch 221, one end of which is connected to a second pipe 220, and the other end is connected to a detergent container 300; a second solenoid valve 420 is provided on the first branch 221. The second solenoid valve 420 can control the opening and closing of the first branch 221 and the flow rate on the first branch 221. When the second solenoid valve 420 and the pump assembly 500 are opened, the detergent in the detergent container 300 is delivered to the gearbox 10 through the second solenoid valve 420 and the second pipe 220 of the first branch 221.

[0053] In some embodiments, the cleaning device includes a second branch 222, one end of which is connected to a second pipe 220, and the other end is connected to a second reservoir 110. A third solenoid valve 430 is provided on the second branch 222. The third solenoid valve 430 can control the opening and closing of the second branch 222 and the flow rate on the second branch 222. When the third solenoid valve 430 and the pump assembly 500 are opened, the new oil in the second reservoir 110 is transported to the gearbox 10 through the third solenoid valve 430 and the second pipe 220 in the second branch 222.

[0054] In some embodiments, the cleaning apparatus further includes a first check valve 440, which is disposed on the second pipe 220 and connected in series with a first solenoid valve 400, a second solenoid valve 420, and a third solenoid valve 430. The first check valve 440 is located between the pump assembly 500 and the third solenoid valve 430. The flow direction of the first check valve 440 is from the first solenoid valve 400 to the pump assembly 500, from the second solenoid valve 420 to the pump assembly 500, or from the third solenoid valve 430 to the pump assembly 500. This arrangement ensures that the medium flows in a predetermined direction, guaranteeing the normal operating sequence and process of the cleaning apparatus.

[0055] In some embodiments, a first viewing window 510 is also provided on the second branch 222, and the liquid level of the first viewing window 510 is the same as the liquid level of the second storage tank 110. The first viewing window 510 is located between the third solenoid valve 430 and the second storage tank 110. The operator can intuitively and conveniently observe the liquid level in the second storage tank 110 through the first viewing window 510. Without opening the second storage tank 110, the operator can know the remaining amount of oil in the second storage tank 110 at any time, which can help the operator prepare to add new oil in advance and avoid the interruption of cleaning work due to insufficient new oil.

[0056] In some embodiments, a filler port 111 is provided on the second reservoir 110. New oil is added to the second reservoir 110 through the filler port 111. During operation, the cleaning device continuously consumes new oil in the second reservoir 110. Timely replenishment of new oil through the filler port 111 ensures that the cleaning device has sufficient new oil for continuous oil change operations.

[0057] In some embodiments, the cleaning device includes a fourth pipe 240, a heater 530, and a first three-way valve 610. The first outlet and the second outlet of the first three-way valve 610 are connected to the second pipe 220, the third outlet of the first three-way valve 610 is connected to one end of the fourth pipe 240, the other end of the fourth pipe 240 is connected to the second liquid storage tank 110, and the heater 530 is disposed on the fourth pipe 240.

[0058] During operation, the pump assembly 500, the first check valve 440, the third solenoid valve 430, and the heater 530 are activated, and the first and third outlets of the first three-way valve 610 are opened. This allows the new oil in the second reservoir 110 to circulate between the second branch 222, the second pipe 220, the fourth pipe 240, the heater 530, and the second reservoir 110. During this circulation, the new oil in the second reservoir 110 is heated by the heater 530. Once the new oil reaches a preset temperature, the third outlet of the first three-way valve 610 is closed, and the first and second outlets of the first three-way valve 610 are opened. This allows the preheated new oil in the second reservoir 110 to flow through the second outlet to the transmission 10, providing the transmission 10 with new oil at a suitable temperature. During the operation of the transmission 10, the new oil at the appropriate temperature allows it to better perform. Through this cyclic heating process, the new oil in the second reservoir 110 can be heated to a preset temperature to meet the oil temperature requirements of equipment such as the gearbox 10. This process is the preheating process of the new oil.

[0059] In some embodiments, a second viewing window 520 is provided on the first pipe 210, and the liquid level in the second viewing window 520 is the same as the liquid level in the first storage tank 100. Operators can intuitively and conveniently observe the liquid level in the first storage tank 100 through the second viewing window 520. Without opening the first storage tank 100, the remaining amount of oil in the first storage tank 100 can be known at any time, helping operators prepare in advance for the discharge of waste oil and avoiding interruptions to the cleaning work due to untimely discharge of waste oil.

[0060] In some embodiments, the cleaning device includes a fifth pipe 250, a second three-way valve 620, and a sampling valve 460. The first outlet and the second outlet of the second three-way valve 620 are respectively connected to the first pipe 210, the third outlet of the second three-way valve 620 is connected to one end of the fifth pipe 250, and the other end of the fifth pipe 250 is connected to the sampling valve 460.

[0061] Specifically, the cleaning device includes a first pressure gauge 710, which is installed in the fifth pipe 250. The first pressure gauge 710 is capable of acquiring the pressure value within the fifth pipe 250.

[0062] Specifically, the cleaning device includes a fourth three-way valve 640 and an eighth pipe 280. The first and second outlets of the fourth three-way valve 640 are both connected to the fifth pipe 250, and the third outlet of the fourth three-way valve 640 is connected to one end of the eighth pipe 280.

[0063] Specifically, the cleaning device includes a second pressure gauge 720. The second pressure gauge 720 is located at the other end of the eighth pipe 280. The second pressure gauge 720 is capable of acquiring the pressure value within the eighth pipe 280.

[0064] Specifically, the cleaning device includes a second filter 320, which is disposed on the eighth pipe 280 and is capable of filtering impurities in the fluid on the eighth pipe 280.

[0065] In some embodiments, the cleaning device includes a sixth pipe 260, a seventh pipe 270, and a third three-way valve 630. One end of the sixth pipe 260 is connected to the fifth pipe 250, and the other end is connected to the second pipe 220. The first and second outlets of the third three-way valve 630 are connected to the second pipe 220, and the third outlet is connected to one end of the seventh pipe 270. The other end of the seventh pipe 270 is connected to the first reservoir 100. The pump assembly 500 is used to draw oil from the transmission 10 sequentially through the first pipe 210, the second three-way valve 620, the fifth pipe 250, the sixth pipe 260, the second pipe 220, the third three-way valve 630, and the seventh pipe 270 into the first reservoir 100, thereby drawing out the waste oil from the transmission 10 and completing the oil suction adjustment function. This process does not require starting the car and can be directly drawn by the pump assembly 500, making it more convenient.

[0066] Specifically, the cleaning device includes a second check valve 450. The second check valve 450 is disposed on the second pipe 220, and is located between the ball valve 410 and the connection between the second pipe 220 and the gearbox 10.

[0067] Working principle:

[0068] Transmission 10 waste oil sampling module: After receiving the vehicle and starting the car, the fourth three-way valve 640 is energized, and the waste oil of the transmission 10 passes through the first pipe 210, the second three-way valve 620, the fifth pipe 250, the fourth three-way valve 640 and then passes through the sampling valve 460 for sampling.

[0069] Add cleaning agent function module: After receiving the vehicle and starting the car, open the second solenoid valve 420 and pump assembly 500. The cleaning agent in the cleaning agent container 300 passes through the first branch 221, the second solenoid valve 420, the first one-way valve 440 of the second pipeline 220, the first three-way valve 610, and the third three-way valve 630 to the gearbox 10.

[0070] Transmission fluid replacement module 10: After receiving and starting the vehicle, the fluid replacement amount is set, the second three-way valve 620 is opened, and the cleaning device extracts the waste fluid from the transmission 10. The waste fluid in the transmission 10 flows through the first pipe 210 and the second three-way valve 620 to the first reservoir 100, increasing the weight of the first reservoir 100. When the weight of the first reservoir 100 reaches a preset value, the second three-way valve 620 is closed, stopping the extraction of waste fluid.

[0071] The third solenoid valve 430, the third three-way valve 630, and the pump assembly 500 are opened. New oil in the second reservoir 110 flows through the third solenoid valve 430, the first one-way valve 440, the first three-way valve 610, the third three-way valve 630, and the second one-way valve 450 of the second branch 222 to the transmission 10, adding new oil to the transmission 10 and reducing the weight of the second reservoir 110. When the weight of the second reservoir 110 decreases to a preset value, the third solenoid valve 430, the third three-way valve 630, and the pump assembly 500 are closed, stopping the addition of new oil to the transmission 10. This process is repeated until the transmission 10 reaches the set oil replacement volume. Finally, a fine-tuning is performed to ensure that the increase in waste oil and the decrease in new oil are consistent with the set oil volume. For example, if the transmission 10 oil is set to 10L, the decrease in new oil should be 10L, and the increase in waste oil should also be 10L.

[0072] The steps for adjusting the transmission fluid level in module 10 are the same as those for changing the fluid, and will not be repeated here.

[0073] The emptying procedure for the first storage tank 100 is as follows: Open the first solenoid valve 400, the pump assembly 500 and the ball valve 410. The waste oil in the first storage tank 100 passes sequentially through the first filter 310 of the third pipeline 230, the first solenoid valve 400, the second pipeline 220, the first check valve 440, the first three-way valve 610, the third three-way valve 630 to the ball valve 410. After opening the ball valve 410, the waste oil is emptied.

[0074] The procedure for emptying the second liquid storage tank 110 is as follows: Open the third solenoid valve 430 and the pump assembly 500. The new oil in the second liquid storage tank 110 passes through the third solenoid valve 430, the first check valve 440, the first three-way valve 610, and the third three-way valve 630 to the ball valve 410. After opening the ball valve 410, the new oil is emptied.

[0075] In summary, the cleaning device provided by this utility model embodiment achieves a well-planned layout of the overall pipeline by merging similar pipelines (such as the second pipeline 220 having a pump assembly 500 and a ball valve 410, with one end connected to the gearbox 10 and the other end connected in parallel to the output ports of the first reservoir 100, the cleaning agent container 300, and the second reservoir 110, respectively; during use, the oil inside the three can be discharged or injected into the gearbox through the merged pipeline by controlling one pump assembly 500), rationally setting multi-way valves, and rationally planning the connection relationships of each solenoid valve, each window, and the heater 530. This enables the cleaning device to not only perform multiple functions such as waste oil sampling, adding cleaning agent, oil replacement, oil volume adjustment, emptying the first reservoir 100, emptying the second reservoir 110, preheating new oil, and adjusting oil suction, but also significantly reduces the number of connecting pipelines compared to the prior art, greatly simplifying the pipeline structure of the cleaning device.

[0076] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A cleaning device for cleaning a gearbox, characterized in that, include: The first reservoir is used to store waste oil recovered from the gearbox; A first pipe, one end of which is connected in series with the first liquid storage tank, and the other end of which is connected to the gearbox; A second pipe, one end of which is connected to the gearbox; The second reservoir is used to store the oil supplied to the gearbox and is connected to the other end of the second pipe; The cleaning agent container is connected to the other end of the second pipe and is connected in parallel with the second liquid storage tank.

2. The cleaning device according to claim 1, characterized in that, The cleaning device includes a third pipe, one end of which is connected to the first liquid storage tank and the other end of which is connected to the second pipe. A first solenoid valve is installed on the third pipe.

3. The cleaning device according to claim 1, characterized in that, The cleaning device includes a first branch, one end of which is connected to the second pipe and the other end of which is connected to the cleaning agent container; a second solenoid valve is provided on the first branch.

4. The cleaning device according to claim 3, characterized in that, The cleaning device includes a second branch, one end of which is connected to the second pipeline and the other end of which is connected to the second liquid storage tank; a third solenoid valve is installed on the second branch.

5. The cleaning device according to claim 4, characterized in that, The second branch is also equipped with a first viewing window, the liquid level of which is the same as the liquid level of the second storage tank.

6. The cleaning apparatus according to claim 1, characterized in that, The cleaning device includes a fourth pipe, a heater, and a first three-way valve. The first outlet and the second outlet of the first three-way valve are connected to the second pipe, the third outlet of the first three-way valve is connected to one end of the fourth pipe, and the other end of the fourth pipe is connected to the second liquid storage tank. The heater is installed on the fourth pipe.

7. The cleaning device according to claim 1, characterized in that, The first pipe is provided with a second viewing window, and the liquid level in the second viewing window is the same as the liquid level in the first storage tank.

8. The cleaning apparatus according to claim 1, characterized in that, The cleaning device includes a fifth pipe, a second three-way valve, and a sampling valve. The first outlet and the second outlet of the second three-way valve are respectively connected to the first pipe. The third outlet of the second three-way valve is connected to one end of the fifth pipe, and the other end of the fifth pipe is connected to the sampling valve.

9. The cleaning apparatus according to claim 8, characterized in that, The cleaning device includes a sixth pipe, a seventh pipe, and a third three-way valve. One end of the sixth pipe is connected to the fifth pipe, and the other end of the sixth pipe is connected to the second pipe. The first outlet and the second outlet of the third three-way valve are connected to the second pipe, and the third outlet of the third three-way valve is connected to one end of the seventh pipe. The other end of the seventh pipe is connected to the first reservoir. A pump assembly is installed on the second pipe. The pump assembly is used to draw oil from the gearbox and sequentially pass through the first pipe, the second three-way valve, the fifth pipe, the sixth pipe, the second pipe, the third three-way valve, and the seventh pipe into the first reservoir.

10. The cleaning apparatus according to claim 1, characterized in that, The cleaning device also includes a ball valve, which is disposed on the second pipe.

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