Efficient and energy-saving forklift oil tank cleaning system

Abstract

The invention discloses an efficient and energy-saving forklift oil tank cleaning system in the technical field of forklift cleaning equipment, an oil tank is fixedly installed on the side face of a frame of a forklift, and the forklift oil tank cleaning system comprises a positioning mechanism used for positioning the oil tank and collecting dirty oil in the oil tank; the sweeping and blowing mechanism is used for sweeping and blowing dust in the oil tank; the dust suction mechanism is used for sucking dust in the oil tank after sweeping and blowing; and the cleaning mechanism is used for cleaning the oil tank in an oil liquid spraying manner after suction. The oil tank is fixed through the positioning mechanism, before formal cleaning, the sweeping and blowing mechanism is matched with the dust collection mechanism to pre-clean the oil tank, oil liquid used in the spraying and cleaning process is reduced, the cleaning mechanism can fill reclaimed oil into the oil tank, cleaning liquid is saved, energy consumption of spraying and cleaning is reduced through pre-cleaning, and the purification efficiency is improved; the cleaning process is efficient and energy-saving, and environmental pollution is reduced.

Description

Technical Field

[0001] The present invention relates to the field of forklift cleaning equipment, and in particular to a high-efficiency and energy-saving forklift fuel tank cleaning system. Background Art

[0002] Forklifts are essential logistics handling equipment, and regular cleaning and maintenance of their fuel tanks is crucial to their performance and lifespan. Existing forklift fuel tank cleaning technologies suffer from low efficiency, high energy consumption, significant pollution, and resource waste.

[0003] Specifically, traditional cleaning methods usually require the fuel tank to be removed from the vehicle frame, which is a cumbersome and time-consuming process. Manual brushing or soaking in chemical detergents is often used for cleaning. The waste liquid generated after cleaning is often directly discharged or simply treated, which can easily cause environmental pollution and waste of resources. In addition, the existing technology generally lacks an effective pre-cleaning process. When wet cleaning is performed directly, the dry dust attached to the inner wall of the fuel tank is easily agglomerated by oil, which not only increases the difficulty of cleaning and oil consumption, but also significantly increases the burden of subsequent waste oil purification, making the overall cleaning process high in energy consumption, low in efficiency, high in cost, and not environmentally friendly.

[0004] Therefore, it is urgent to develop a forklift fuel tank cleaning system that can complete the cleaning operation efficiently and energy-savingly and can realize oil recycling. Summary of the Invention

[0005] The object of the present invention is to provide a highly efficient and energy-saving forklift fuel tank cleaning system, which solves the problem of inefficient energy consumption in existing forklift fuel tank cleaning work.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: An efficient and energy-saving forklift fuel tank cleaning system, wherein the fuel tank is fixedly mounted on the side of the forklift frame, the system comprises: a positioning mechanism, used for positioning the frame and the fuel tank on the frame; A sweeping and blowing mechanism, used for sweeping and blowing away dust in the oil tank; a dust suction mechanism for sucking dust from the oil tank after sweeping and blowing; a cleaning mechanism for cleaning the oil tank by spraying oil after suction; After the oil is sprayed, dirty oil is formed in the oil tank. The positioning mechanism is also used to collect the dirty oil in the oil tank. The system purifies the dirty oil into regenerated oil through the cleaning mechanism, and the cleaning mechanism fills the regenerated oil into the oil tank after cleaning.

[0007] As a further optimization solution of the present invention, the positioning mechanism includes an oil tank and a valve provided at the bottom of the oil tank, and the valve is connected to the oil inlet of the cleaning mechanism.

[0008] As a further optimization scheme of the present invention, two oil tanks are installed on the vehicle frame, and the oil in the two oil tanks is fuel oil and hydraulic oil respectively. A partition for separating fuel oil and hydraulic oil is provided in the middle of the inner side of the oil tank, and two tank covers are provided on the top of the oil tank, and the two tank covers are respectively provided with openings corresponding to the two oil tanks.

[0009] As a further optimization scheme of the present invention, the bottom of the frame has crossbeam 1 and crossbeam 2, the positioning mechanism also includes a support frame, the oil tank is arranged on the inner side of the support frame, a positioning plate is provided on one side of the top of the support frame, and a pair of pads are provided on the other side of the top of the support frame, the two sides of the positioning plate are bent upward to position the crossbeam 1, and the pads are used to support the crossbeam 2.

[0010] As a further optimization scheme of the present invention, the cleaning mechanism includes an oil purification device and a hard positioning tube, an oil pipeline 1 is provided between the oil inlet of the positioning tube and the oil outlet of the oil purification device, an oil pipeline 2 is provided at the oil outlet of the positioning tube, the oil outlet of the oil pipeline 2 is provided with a nozzle, and a positioning frame corresponding to the positioning tube is provided on the box cover.

[0011] As a further optimization scheme of the present invention, the purge and blowing mechanism includes an air pump and a purge and blowing pipeline arranged at the air outlet of the air pump, the dust suction mechanism includes a dust suction device and a dust suction pipeline arranged at the air inlet of the dust suction device, and a path switching mechanism is provided between the purge and blowing pipeline and the dust suction pipeline, and the path switching mechanism is used to make the purge and blowing pipeline and the dust suction pipeline alternately connected.

[0012] As a further optimization scheme of the present invention, the path switching mechanism includes a bracket and two end covers symmetrically arranged on the inner side of the bracket, one side of the end cover is provided with an exhaust channel connected to the purge pipeline, and the other side of the end cover is provided with an exhaust channel connected to the dust suction pipeline, an adjustment plate is provided between the two end covers, and a through hole is provided on the adjustment plate. A driving assembly for driving the adjustment plate to rotate is provided on one side of the bracket, so that the through holes on the adjustment plate are alternately connected to the exhaust channel and the exhaust channel.

[0013] As a further optimization solution of the present invention, a collar is fixedly provided on the outside of the adjustment plate, the collar is rotatably connected to the two end covers, the driving assembly drives the adjustment plate to rotate through the collar, and a roller is provided between the collar and the end covers.

[0014] As a further optimization scheme of the present invention, the purge pipeline includes an exhaust pipe 1 and an exhaust pipe 2 respectively arranged on both sides of the passage switching mechanism, an exhaust pipe 3 is provided between the air inlet of the exhaust pipe 2 and the air outlet of the air pump, and the air outlet of the exhaust pipe 1 is connected to the air outlet pipe; the dust suction pipeline includes an exhaust pipe 1 and an exhaust pipe 2 respectively arranged on both sides of the passage switching mechanism, an exhaust pipe 3 is provided between the air outlet of the exhaust pipe 2 and the air inlet of the dust suction device, and the air inlet of the exhaust pipe 3 is connected to the air intake pipe.

[0015] As a further optimization solution of the present invention, the air outlet pipe is connected to the exhaust pipe 1 through a flexible pipe, the air inlet pipe is connected to the exhaust pipe 1 through a flexible pipe, and the air outlet pipe is fixedly connected to the air inlet pipe through a positioning hoop.

[0016] The beneficial effects of the present invention are: The present invention fixes the vehicle frame and the fuel tank by a positioning mechanism. Before formal cleaning, the fuel tank is pre-cleaned by a sweeping and blowing mechanism in cooperation with a dust collecting mechanism, thereby reducing the oil used in the spray cleaning process. The cleaning mechanism can spray the oil on the one hand and purify the dirty oil generated after cleaning on the other hand, and regenerate the oil into the fuel tank, thereby saving cleaning fluid. The pre-cleaning can also reduce the energy consumption of spray cleaning and save the energy required for purifying the dirty oil, thereby improving the purification efficiency. The entire cleaning process is highly efficient and energy-saving, and reduces pollution. During the pre-cleaning process, the present invention adopts a method of sweeping and blowing followed by suction to clean dust. The sweeping and blowing mechanism can concentrate dust under the fuel tank and separate some dust adhering to the inner wall of the fuel tank from the fuel tank, thereby improving the dust collection efficiency and dust collection volume of the dust collection mechanism, further reducing the residual stains in the fuel tank, and improving the subsequent spray cleaning effect. The present invention uses a passage switching mechanism to alternately connect the sweeping and blowing pipeline and the dust suction pipeline. During pre-cleaning, the driving assembly rotates the collar and the adjustment plate, and the through holes of the adjustment plate are alternately connected to the exhaust channel and the suction channel, so that the air outlet pipe and the air inlet pipe perform sweeping and dust suction operations alternately. After the air outlet pipe is swept and blown, the dust separated from the side wall of the oil tank can be promptly extracted by the air inlet pipe, further improving the dust treatment effect of the pre-cleaning and reducing the difficulty of subsequent dirty oil purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the frame structure of the present invention; Figure 2 Schematic diagram of the overall structure of the first embodiment of the present invention; Figure 3 It is a structural schematic diagram of the positioning mechanism of the present invention; Figure 4 It is a structural schematic diagram of the oil tank of the present invention; Figure 5 This is a schematic diagram of the working state of the positioning mechanism of the present invention when it supports the vehicle frame; Figure 6 Schematic diagram of the overall structure of the second embodiment of the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 for Figure 6 Enlarged view of point B in the middle; Figure 9 Schematic diagram of the structure of the path switching mechanism of the present invention; In the figure: 1. Positioning mechanism; 2. Sweeping mechanism; 3. Dust collection mechanism; 4. Cleaning mechanism; 5. Channel switching mechanism; 6. Positioning hoop; 7. Mounting frame; 11. Oil tank; 12. Valve; 13. Partition plate; 14. Tank cover; 15. Support frame; 16. Positioning plate; 17. Spacer; 18. Positioning frame; 21. Air pump; 22. Exhaust pipe 1; 23. Exhaust pipe 2; 24. Exhaust pipe 3; 25. Exhaust pipe; 31. Dust collection device; 32. Exhaust pipe 1; 33. Exhaust pipe 2; 34. Exhaust pipe 3; 35. Intake pipe; 41. Oil purification device; 42. Positioning pipe; 43. Oil delivery pipe 1; 44. Oil delivery pipe 2; 45. Nozzle; 51. Bracket; 52. End cover; 53. Exhaust channel; 54. Exhaust channel; 55. Adjustment plate; 56. Through hole; 57. Drive assembly; 58. Ring; 59. Roller; F. Frame; T. Fuel tank; b1. Crossbeam 1; b2. Crossbeam 2. DETAILED DESCRIPTION

[0018] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1 like Figure 1-5 As shown, this embodiment discloses a highly efficient and energy-saving forklift fuel tank cleaning system. The forklift has two fuel tanks T, each fixedly mounted on either side of the forklift's frame F. One tank T is used to hold fuel, and the other tank T is used to hold hydraulic oil. The forklift fuel tank cleaning system includes a positioning mechanism 1, which is used to position the frame F and the fuel tanks T on the frame F. An oil drain bolt is provided at the bottom of the fuel tank T. After the drain bolt is unscrewed, the positioning mechanism 1 collects contaminated oil from the two tanks T.

[0020] The positioning mechanism 1 comprises a support frame 15, an oil tank 11 fixedly mounted inside the support frame 15, and two valves 12 at the bottom of the oil tank 11. A vehicle frame F is positioned above the support frame 15. A partition 13 is positioned in the middle of the inner portion of the oil tank 11 to separate the fuel and hydraulic oil. Two tank covers 14 are positioned at the top of the oil tank 11, each with an opening corresponding to the two oil tanks T. The partition 13 divides the interior of the oil tank 11 into a fuel chamber and a hydraulic oil chamber. The two tank covers 14 engage the tops of the fuel and hydraulic oil chambers, respectively. Two valves 12 connect the fuel and hydraulic oil chambers, respectively.

[0021] The two valves 12 are connected to the two cleaning mechanisms 4, respectively. A purge mechanism 2 and a dust collection mechanism 3 are located on one side of the positioning mechanism 1. The purge mechanism 2 includes an air pump 21 and a purge pipeline connected to the air outlet of the air pump 21. The dust collection mechanism 3 includes a dust collection device 31 and a dust collection pipeline connected to the air inlet of the dust collection device 31. A purge gun with a curved end is located at the end of the purge pipeline. A rigid dust collection pipe with a curved end is located at the end of the dust collection pipe.

[0022] Before cleaning the fuel tank T, the positioning mechanism 1 is used to position the fuel tank T. During this positioning process, the vehicle frame F, which holds the fuel tank T, is hoisted onto the support frame 15, securing the positions of the vehicle frame F and the fuel tank T. The cover of the fuel tank T is then opened, and the sweeping mechanism 2, in conjunction with the dust collection mechanism 3, pre-cleans the fuel tank T.

[0023] During the pre-cleaning process, the sweeping mechanism 2 first cleans the dust outside the fuel tank T and blows the dust inside the fuel tank T to the bottom of the fuel tank T. The dust collection mechanism 3 then sucks the dust inside the fuel tank T to complete the pre-cleaning of the fuel tank T. After that, the fuel tank T is officially cleaned.

[0024] During the main cleaning process, the cleaning mechanism 4 sprays oil into the fuel tank T. This oil absorbs any remaining dirt on the inner walls of the tank T, forming contaminated oil. Opening the drain bolt of the fuel tank T allows the contaminated oil to flow from the oil outlet of the tank T through the opening of the tank cover 14 and into the oil tank 11. After opening the valve 12, the contaminated oil flows into the cleaning mechanism 4 through the pipeline between the valve 12 and the cleaning mechanism 4. The cleaning mechanism 4 purifies the contaminated oil, producing recycled oil. The cleaning mechanism 4 then passes the recycled oil back into the fuel tank T, enabling the reuse of the cleaning oil.

[0025] In this embodiment, when cleaning the fuel tank T, there is no need to remove the fuel tank T from the vehicle frame F. Pre-cleaning improves the cleanliness of the contaminated oil during the main cleaning process, reducing the cleaning and purification burden of the cleaning mechanism 4. This reduces energy consumption during the cleaning process, shortens the purification process, and cleans efficiently and thoroughly. The regenerated oil produced after the contaminated oil purification can be reused, saving cleaning fluid. Furthermore, because the pre-cleaning process uses a sweeping and then suctioning method to remove dust, the sweeping and blowing mechanism 2 can concentrate dust below the fuel tank T and separate some dust adhering to the inner wall of the fuel tank T from the fuel tank T. This improves the dust collection efficiency and dust collection capacity of the dust collection mechanism 3, further reduces residual stains in the fuel tank T, and enhances the subsequent spray cleaning effect.

[0026] Specifically, if Figure 3-5 As shown, crossbeam 1 b1 and crossbeam 2 b2 are fixedly mounted on the bottom of the frame F. A positioning plate 16 is provided on one side of the top of the support frame 15, and a pair of pads 17 are provided on the other side of the top of the support frame 15. The positioning plate 16 has two upwardly curved sides to position crossbeam 1 b1, and the pads 17 support crossbeam 2 b2. A notch is provided on the rear side of the positioning plate 16 for the frame F to pass through. A positioning groove is formed within the curved positioning plate 16, which secures crossbeam 1 b1 at the rear of the frame F. Crossbeam 2 b2 at the front of the frame F is supported by the pads 17 to prevent oil from pooling in front of the fuel tank T.

[0027] The cleaning mechanism 4 includes an oil purifier 41 and a rigid positioning tube 42. An oil delivery pipe 1 43 is connected between the oil inlet of the positioning tube 42 and the oil outlet of the oil purifier 41. The oil outlet of the positioning tube 42 is connected to an oil delivery pipe 2 44, and the oil outlet of the oil delivery pipe 2 44 is provided with a nozzle 45. A positioning bracket 18 corresponding to the positioning tube 42 is provided on the tank cover 14. The oil purifier 41 is preferably an SF-A98 model cleaning machine. This oil purifier 41 can be replaced with other oil purification equipment, as long as it has the ability to purify and store oil. The oil inlets of the oil purifiers 41 of the two cleaning mechanisms 4 are connected to the two valves 12, respectively. The positioning tubes 42 are positioned by the positioning bracket 18 to prevent contamination caused by the nozzle 45 falling to the ground. Furthermore, a handle is provided on the top of the tank cover 14, and several oil deflectors (not shown) are also provided on the tank cover 14. These oil deflectors are placed around the tank cover 14 to prevent oil from splashing out of the opening of the tank cover 14. In addition, the oil baffle plate may be replaced by other oil baffle structures, for example, an oil receiving channel may be provided above the opening to prevent oil from splashing out.

[0028] Example 2 like Figure 6-9As shown, this embodiment discloses another forklift fuel tank cleaning system. This system differs from the previous embodiment in that a path switching mechanism 5 is provided between the purge and blow pipes and the dust collection pipes. This path switching mechanism 5 is used to alternately connect the purge and blow pipes with the dust collection pipes. The end of the purge and blow pipe in this embodiment is adjacent to the end of the dust collection pipe. The system also includes a positioning hoop 6, which connects the end of the purge and blow pipe to the end of the dust collection pipe via the positioning hoop 6. The system also includes a double-layer mounting frame 7. The air pump 21 and dust collection device 31 are mounted on the first layer of the mounting frame 7, and the path switching mechanism 5 is mounted on the second layer of the mounting frame 7.

[0029] Specifically, the path switching mechanism 5 comprises a bracket 51 and two end caps 52 symmetrically arranged inside the bracket 51. One side of the end caps 52 is provided with an exhaust channel 53 connected to the purge pipeline, and the other side of the end caps 52 is provided with an exhaust channel 54 connected to the dust collection pipeline. An adjustment plate 55 is provided between the two end caps 52, and the adjustment plate 55 is provided with a through hole 56. A drive assembly 57 is provided on one side of the bracket 51 for rotating the adjustment plate 55 so that the through hole 56 on the adjustment plate 55 alternately connects with the exhaust channel 53 and the exhaust channel 54. The through hole 56 is arc-shaped, and the two ends of the through hole 56 are respectively in close contact with the two end caps 52. It should be noted that the through hole 56 cannot connect with both the exhaust channel 53 and the exhaust channel 54 at the same time. The timing of the through hole 56 connecting with the exhaust channel 53 or the exhaust channel 54 can be controlled by the drive assembly 57. The bracket 51 is provided with mounting holes corresponding to the exhaust pipe 1 22, the exhaust pipe 2 23, the exhaust pipe 1 32, and the exhaust pipe 2 33.

[0030] A collar 58 is fixedly mounted on the outside of the adjustment plate 55 and is rotatably connected to the two end caps 52. A drive assembly 57 drives the adjustment plate 55 in rotation via the collar 58. A roller 59, preferably a ball bearing, is positioned between the collar 58 and the end caps 52. The end caps 52 are provided with a retaining groove corresponding to the roller 59. The collar 58 is composed of two semi-rings joined together by welding. Alternatively, in other embodiments, the two semi-rings may be secured to each other via threaded fasteners. The drive assembly 57 includes a motor fixedly mounted on the second layer of the mounting frame 7, a worm gear transmission mechanism located at the output end of the motor, and a gear-ring transmission mechanism located between the worm gear transmission mechanisms. The gear-ring transmission mechanism includes a gear ring fixedly mounted on the outside of the collar 58 and a gear meshing with the gear ring. The gear is fixedly connected to the worm wheel of the worm gear transmission mechanism via a rotating shaft. The worm of the worm gear transmission mechanism is also equipped with an encoder to detect motor speed. In addition, in some other embodiments, the drive assembly 57 of this embodiment may be replaced by other rotation drive mechanisms, as long as they can drive the collar 58 to rotate.

[0031] The purge piping system includes exhaust pipe 1 22 and exhaust pipe 2 23, respectively, located on either side of the passage switching mechanism 5. Exhaust pipe 3 24 is interposed between the air inlet of exhaust pipe 23 and the air outlet of the air pump 21. The air outlet of exhaust pipe 1 22 is connected to an air outlet pipe 25. The dust collection system includes exhaust pipe 1 32 and exhaust pipe 2 33, respectively, located on either side of the passage switching mechanism 5. Exhaust pipe 3 34 is interposed between the air outlet of exhaust pipe 2 33 and the air inlet of the dust collection device 31. The air inlet of exhaust pipe 3 34 is connected to an air inlet pipe 35. The air outlet pipe 25 is connected to exhaust pipe 1 22 via a flexible tube, while the air inlet pipe 35 is connected to exhaust pipe 1 32 via a flexible tube. The air outlet pipe 25 is fixedly connected to the air inlet pipe 35 via a positioning clamp 6. The exhaust pipe 1 22 and the exhaust pipe 2 23 are respectively connected to the exhaust channels 53 of the two end covers 52 , and the exhaust pipe 1 32 and the exhaust pipe 2 33 are respectively connected to the exhaust channels 54 of the two end covers 52 .

[0032] This embodiment can perform pre-cleaning in the manner of the previous embodiment, that is, only one sweeping and dust collection is performed. Alternatively, multiple sweeping and dust collection can be performed alternately. During the pre-cleaning process using the alternating sweeping and dust collection method, the sweeping mechanism 2 and the dust collection mechanism 3 are turned on, and the through hole 56 is initially connected to the exhaust channel 53. During pre-cleaning, the ring 58 is rotated by the drive assembly 57, and the through hole 56 is alternately connected to the exhaust channel 53 and the air extraction channel 54, so that the air outlet pipe 25 and the air inlet pipe 35 alternately perform sweeping and dust collection operations. After the air outlet pipe 25 is swept and blew, the dust separated from the side wall of the oil tank T can be promptly extracted by the air inlet pipe 35, further improving the dust treatment effect of the pre-cleaning. In addition, the through hole 56 generates heat when it rotates close to the end cover 52, which can reduce the stickiness of the stains after sweeping, making the pre-cleaning more efficient and thorough.

[0033] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An efficient and energy-saving forklift fuel tank cleaning system, wherein the fuel tank is fixedly mounted on the side of the forklift frame, characterized in that: The system includes: A positioning mechanism (1) for positioning the vehicle frame and the fuel tank on the vehicle frame; A sweeping mechanism (2) for sweeping away dust in the oil tank; A dust suction mechanism (3) for sucking dust from the oil tank after sweeping and blowing; A cleaning mechanism (4) for cleaning the oil tank by spraying oil after suction; After the oil is sprayed, dirty oil is formed in the oil tank. The positioning mechanism (1) is also used to collect the dirty oil in the oil tank. The system purifies the dirty oil into regenerated oil through the cleaning mechanism (4), and the cleaning mechanism (4) fills the regenerated oil into the oil tank after cleaning.

2. The forklift fuel tank cleaning system according to claim 1, characterized in that: The positioning mechanism (1) comprises an oil tank (11) and a valve (12) provided at the bottom of the oil tank (11), wherein the valve (12) is connected to the oil inlet of the cleaning mechanism (4).

3. The forklift fuel tank cleaning system according to claim 2, characterized in that: Two oil tanks are installed on the vehicle frame. The oil in the two oil tanks is fuel oil and hydraulic oil respectively. A partition (13) for separating fuel oil and hydraulic oil is provided in the middle of the inner side of the oil tank (11). Two tank covers (14) are provided on the top of the oil tank (11), and the two tank covers (14) are respectively provided with openings corresponding to the two oil tanks.

4. The forklift fuel tank cleaning system according to claim 3, characterized in that: The bottom of the vehicle frame has a crossbeam 1 and a crossbeam 2, and the positioning mechanism (1) also includes a support frame (15). The oil tank (11) is arranged on the inner side of the support frame (15). A positioning plate (16) is provided on one side of the top of the support frame (15), and a pair of cushion blocks (17) are provided on the other side of the top of the support frame (15). Both sides of the positioning plate (16) are bent upward to position the crossbeam 1, and the cushion blocks (17) are used to support the crossbeam 2.

5. The forklift fuel tank cleaning system according to claim 3, characterized in that: The cleaning mechanism (4) includes an oil purification device (41) and a hard positioning tube (42), an oil delivery tube (43) is provided between the positioning tube (42) and the oil purification device (41), an oil delivery tube (44) is provided at the oil outlet of the positioning tube (42), a nozzle (45) is provided at the oil outlet of the oil delivery tube (44), and a positioning frame (18) corresponding to the positioning tube (42) is provided on the box cover (14).

6. The forklift fuel tank cleaning system according to claim 1, characterized in that: The purge and blow mechanism (2) comprises an air pump (21) and a purge and blow pipeline provided at the air outlet of the air pump (21); the dust suction mechanism (3) comprises a dust suction device (31) and a dust suction pipeline provided at the air inlet of the dust suction device (31); a passage switching mechanism (5) is provided between the purge and blow pipeline and the dust suction pipeline; the passage switching mechanism (5) is used to alternately connect the purge and blow pipeline and the dust suction pipeline.

7. The forklift fuel tank cleaning system according to claim 6, characterized in that: The passage switching mechanism (5) comprises a bracket (51) and two end covers (52) symmetrically arranged on the inner side of the bracket (51), one side of the end cover (52) is provided with an exhaust channel (53) connected to the purge pipeline, and the other side of the end cover (52) is provided with an exhaust channel (54) connected to the dust suction pipeline, an adjustment plate (55) is provided between the two end covers (52), and the adjustment plate (55) is provided with a through hole (56), and one side of the bracket (51) is provided with a driving assembly (57) for driving the adjustment plate (55) to rotate, so that the through hole (56) on the adjustment plate (55) is alternately connected to the exhaust channel (53) and the exhaust channel (54).

8. The forklift fuel tank cleaning system according to claim 7, characterized in that: A collar (58) is fixedly provided on the outside of the adjustment plate (55), and the collar (58) is rotatably connected to the two end covers (52). The driving assembly (57) drives the adjustment plate (55) to rotate via the collar (58), and a roller (59) is provided between the collar (58) and the end covers (52).

9. The forklift fuel tank cleaning system according to claim 6, characterized in that: The purge pipeline includes an exhaust pipe 1 (22) and an exhaust pipe 2 (23) respectively arranged on both sides of the passage switching mechanism (5), and an exhaust pipe 3 (24) is provided between the exhaust pipe 2 (23) and the air pump (21), and the air outlet of the exhaust pipe 1 (22) is connected to the air outlet pipe (25); the dust suction pipeline includes an exhaust pipe 1 (32) and an exhaust pipe 2 (33) respectively arranged on both sides of the passage switching mechanism (5), and an exhaust pipe 3 (34) is provided between the exhaust pipe 2 (33) and the dust suction device (31), and the air inlet of the exhaust pipe 3 (34) is connected to the air inlet pipe (35).

10. The forklift fuel tank cleaning system according to claim 9, characterized in that: The air outlet pipe (25) is connected to the exhaust pipe (22) through a flexible pipe, the air inlet pipe (35) is connected to the exhaust pipe (32) through a flexible pipe, and the air outlet pipe (25) is fixedly connected to the air inlet pipe (35) through a positioning hoop (6).

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