Pneumatic cleaning device for cleaning a railway locomotive

Abstract

The utility model discloses a kind of for the pneumatic cleaning device of railway locomotive is cleaned, the disclosed pneumatic cleaning device includes clean water tank, spray gun, blow and suction dual-purpose airflow gun and gas distribution valve;The gas distribution valve has valve inlet, first outlet and second outlet, the valve inlet is used to be connected with the total air pipe of railway locomotive sealing, the first outlet is connected with the clean water tank by pipeline, the second outlet is connected with the air inlet of blow and suction dual-purpose airflow gun by pipeline, the spray gun is communicated with the bottom of the clean water tank by pipeline;The compressed air exported by the total air pipe is used to pressurize the inside of the clean water tank by the first outlet, and the compressed air exported by the total air pipe is used to provide gas source to blow and suction dual-purpose airflow gun by the second outlet.The above scheme can solve the problem that existing cleaning device cannot meet the cleaning demand of railway locomotive.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device design technology, and in particular to a pneumatic cleaning device for cleaning railway locomotives. Background Technology

[0002] During long-term outdoor operation, railway locomotives are prone to accumulating dust, oil, metal shavings, and other contaminants on their exterior surfaces, bogies, braking systems, and other critical components. If these contaminants are not removed promptly, they will not only damage the vehicle's appearance but may also clog heat dissipation channels, accelerate wear on moving parts, and consequently affect operational stability and heat dissipation performance. In severe cases, they can shorten the lifespan of core components. Therefore, regular cleaning of railway locomotives is a crucial aspect of ensuring railway maintenance quality and operational safety.

[0003] In actual operation and maintenance scenarios, railway locomotives often need to be temporarily parked at field work sites or temporary maintenance yards without fixed power supply facilities. However, existing cleaning devices mostly rely on external mains power or dedicated generators for power supply. In field or temporary maintenance scenarios without power supply, the cleaning devices cannot start normally, thus failing to meet the cleaning needs of railway locomotives. Utility Model Content

[0004] This utility model discloses a pneumatic cleaning device for cleaning railway locomotives, in order to solve the problem that existing cleaning devices cannot meet the cleaning needs of railway locomotives.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows: This application discloses a pneumatic cleaning device for cleaning railway locomotives. The disclosed pneumatic cleaning device includes a clean water tank, a spray gun, a blower-suction air gun, and a gas distribution valve. The gas distribution valve has a valve inlet, a first outlet, and a second outlet. The valve inlet is used for a sealed connection with the main air duct of the railway locomotive. The first outlet is connected to the clean water tank through a pipe, and the second outlet is connected to the air inlet of the blow-and-suction air gun through a pipe. The spray gun is connected to the bottom of the clean water tank through a pipe. The compressed air output from the main air duct is used to pressurize the interior of the clean water tank through the first outlet, so that the cleaning liquid in the clean water tank is delivered to the spray gun under air pressure. The compressed air output from the main air duct is used to provide an air source to the blow-and-suction air gun through the second outlet.

[0006] The technical solution adopted in this utility model can achieve the following technical effects: The pneumatic cleaning device disclosed in this application configures the gas distribution valve with a valve inlet, a first outlet, and a second outlet. The valve inlet is used for a sealed connection with the main air duct of the railway locomotive. The first outlet is connected to a clean water tank through a pipe, and the second outlet is connected to the air inlet of a blow-and-suction air gun through a pipe. The spray gun is connected to the bottom of the clean water tank through a pipe. This allows the compressed air output from the main air duct to pressurize the interior of the clean water tank through the first outlet, so that the cleaning liquid in the clean water tank is delivered to the spray gun under air pressure. The compressed air output from the main air duct provides an air source to the blow-and-suction air gun through the second outlet. Thus, relying on the compressed air from the main air duct of the railway locomotive as a power source, it does not require external mains power or a dedicated generator for power supply, thereby meeting the cleaning needs of railway locomotives when temporarily parked at field work sites or temporary maintenance yards without fixed power supply facilities. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the pneumatic cleaning device disclosed in the embodiment of this utility model.

[0008] Explanation of reference numerals in the attached figures: 100-Clear Water Tank 200-spray gun, 300-Blow and Suction Dual-Use Airflow Gun 400 - Gas distribution valve, 410 - Valve inlet, 420 - First outlet 510 - Booster pump, 520 - Accumulator 610-Cleaning agent injection pipeline, 620-Agitator, 621-Pneumatic drive unit, 622-Drive shaft, 710 - Separation device, 720 - Wastewater tank, 721 - Transparent window, 722 - Suspended balls, 730 - Reverse airflow flushing device 810 - Frame, 820 - Wheels. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0010] The technical solutions disclosed in the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0011] Please refer to Figure 1This utility model discloses a pneumatic cleaning device for cleaning railway locomotives. The disclosed pneumatic cleaning device includes a clean water tank 100, a spray gun 200, a blower / suction combined airflow gun 300, and a gas distribution valve 400. The clean water tank 100 has a sealed structure, and its interior can withstand a high-pressure environment.

[0012] The gas distribution valve 400 has a valve inlet 410, a first outlet 420, and a second outlet. The valve inlet 410 is used for a sealed connection with the main air duct of the railway locomotive. The first outlet 420 is connected to the clean water tank 100 via a pipe, the second outlet is connected to the air inlet of the blow-suction dual-purpose air gun 300 via a pipe, and the spray gun 200 is connected to the bottom of the clean water tank 100 via a pipe. It should be noted that the pipes connecting the first outlet 420 to the clean water tank 100, the pipes connecting the second outlet to the air inlet of the blow-suction dual-purpose air gun 300, and the pipes connecting the spray gun 200 to the bottom of the clean water tank 100 are different pipes, and the pipes connecting different components mentioned later are also different pipes.

[0013] The compressed air output from the main duct is used to pressurize the interior of the clean water tank 100 through the first outlet 420, so that the cleaning liquid in the clean water tank 100 is delivered to the spray gun 200 under air pressure. The compressed air output from the main duct is used to provide air source to the blow-suction air gun 300 through the second outlet.

[0014] It should be noted that the blow-suction dual-purpose airflow gun 300 can have an air inlet, a blow-exhaust outlet, and a suction-exhaust outlet. The air inlet of the blow-suction dual-purpose airflow gun 300 is connected to the second outlet. When the blow-suction dual-purpose airflow gun 300 is in blowing mode, the gas entering from the air inlet can be ejected from the blow-exhaust outlet, thereby forming gas to blow away the vehicle body. When the blow-suction dual-purpose airflow gun 300 is in suction mode, the gas entering from the air inlet can create a negative pressure at the blow-exhaust outlet, so that the blow-exhaust outlet of the blow-suction dual-purpose airflow gun 300 can suck away sewage or solid particles and other dirt from the vehicle body, and discharge them from the suction-exhaust outlet. The blow-suction dual-purpose airflow gun 300 can be an existing product, and this application embodiment does not impose specific restrictions on the selection of the blow-suction dual-purpose airflow gun 300.

[0015] It should be further explained that the gas distribution valve 400 may have a valve core. By controlling the position of the valve core of the gas distribution valve 400, the connection or closure of the inlet 410 and the first outlet 420, as well as the connection or closure of the inlet 410 and the second outlet, can be controlled. By controlling the valve core of the gas distribution valve 400, the passages between the inlet 410 and the first outlet 420, and between the inlet 410 and the second outlet, can be simultaneously connected or simultaneously closed. Alternatively, the connection or closure of the passages between the inlet 410 and the first outlet 420, and between the inlet 410 and the second outlet, can be controlled independently. This controls the compressed air output from the main air duct to pressurize the interior of the clean water tank 100 and to provide an air source to the blow-suction dual-purpose airflow gun 300.

[0016] Of course, the gas distribution valve 400 may not be equipped with a valve core. The passage between the inlet 410 and the first outlet 420 and the passage between the inlet 410 and the second outlet of the gas distribution valve 400 can always be in a connected state. Manual switch valves can be installed on the pipe connecting the first outlet 420 to the clean water tank 100 and on the pipe connecting the second outlet to the blow-suction dual-purpose air gun 300. By controlling the manual switch valve on the pipe connecting the first outlet 420 to the clean water tank 100, the compressed air output from the main air duct can be pressurized into the clean water tank 100. By controlling the manual switch valve on the pipe connecting the second outlet to the blow-suction dual-purpose air gun 300, the air source can be supplied to the blow-suction dual-purpose air gun 300.

[0017] In another embodiment, the gas distribution valve 400 may not have a valve core, and manual switch valves may not be provided on the pipes connecting the first outlet 420 to the clean water tank 100 and on the pipes connecting the second outlet to the blow-suction dual-purpose airflow gun 300. The spray gun 200 may be a pneumatic cleaning gun with a built-in manual switch, and the blow-suction dual-purpose airflow gun 300 may be a blow-suction dual-purpose vacuum cleaner gun with a built-in manual switch. Both the spray gun 200 and the blow-suction dual-purpose airflow gun 300 can be existing products, and will not be described in detail in the comparison of embodiments in this application.

[0018] Specifically, when cleaning a railway locomotive is required, the pneumatic cleaning device is first removed, and the valve inlet 410 is sealed and connected to the main air duct of the railway locomotive. If the gas distribution valve 400 is equipped with a valve core, when the spray gun 200 needs to spray cleaning fluid onto the car body, the inlet 410 is connected to the first outlet 420. Compressed air from the main air duct pressurizes the interior of the clean water tank 100 through the first outlet 420, thereby increasing the air pressure inside the clean water tank 100. Under the action of air pressure, the cleaning fluid in the clean water tank 100 is pressurized and transported to the spray gun 200, thus achieving high-pressure spray cleaning. When it is necessary to use the dual-purpose airflow gun 300 to spray gas onto the car body or suck up the cleaning fluid from the car body... When sewage or solid particles are present, the control inlet 410 is connected to the second outlet. When the blow-and-suction air gun 300 is in the blowing mode, the compressed air from the main duct provides purging gas to the blow-and-suction air gun 300 through the second outlet, so that the blow-and-suction air gun 300 sprays gas from its exhaust port. When the blow-and-suction air gun 300 is in the suction mode, the compressed air from the main duct provides gas to the blow-and-suction air gun 300 through the second outlet to form a negative pressure, so that the blow-and-suction air gun 300 sucks away sewage or solid particles from the vehicle body and discharges the sewage and solid particles from its suction port.

[0019] If manual valves are installed on the pipe connecting the first outlet 420 to the clean water tank 100 and on the pipe connecting the second outlet to the blow-suction dual-purpose air gun 300, when the spray gun 200 needs to spray cleaning fluid onto the vehicle body, the manual valve on the pipe connecting the first outlet 420 to the clean water tank 100 is opened. Compressed air from the main air duct pressurizes the interior of the clean water tank 100 through the first outlet 420, increasing the air pressure inside the clean water tank 100. Under this pressure, the cleaning fluid in the clean water tank 100 is pressurized and transported to the spray gun 200, thus achieving high-pressure spray cleaning. When the blow-suction dual-purpose air gun 300 needs to spray gas onto the vehicle body or suck up sewage or solid particles from the vehicle body... When the vehicle is dirty, the manual switch valve on the pipe connecting the second outlet to the blow-and-suction air gun 300 is opened. When the blow-and-suction air gun 300 is in blowing mode, the compressed air from the main air duct provides purging gas to the blow-and-suction air gun 300 through the second outlet, so that the blow-and-suction air gun 300 sprays gas from its exhaust port. When the blow-and-suction air gun 300 is in suction mode, the compressed air from the main air duct provides gas to the blow-and-suction air gun 300 through the second outlet to form a negative pressure, so that the blow-and-suction air gun 300 sucks away sewage or solid particles and other dirt from the vehicle body, and discharges the sewage and solid particles and other dirt from the suction and exhaust ports of the blow-and-suction air gun 300.

[0020] If the spray gun 200 is a pneumatic cleaning gun with a built-in manual switch, and the blow-and-suction dual-purpose airflow gun 300 is a blow-and-suction dual-purpose vacuum gun with a built-in manual switch, the main air duct can directly pressurize the interior of the clean water tank 100 and directly provide an air source for the blow-and-suction dual-purpose airflow gun 300. By controlling the manual switch of the spray gun 200, high-pressure spray cleaning can be achieved, and by controlling the manual switch of the blow-and-suction dual-purpose airflow gun 300, gas can be sprayed from the exhaust port of the blow-and-suction dual-purpose airflow gun 300, or the exhaust port of the blow-and-suction dual-purpose airflow gun 300 can suck away sewage or solid particles and other dirt from the vehicle body, and discharge the sewage and solid particles and other dirt from the suction and exhaust ports of the blow-and-suction dual-purpose airflow gun 300.

[0021] The pneumatic cleaning device disclosed in this application configures the gas distribution valve 400 with a valve inlet 410, a first outlet 420, and a second outlet. The valve inlet 410 is used to seal the connection with the main air duct of the railway locomotive. The first outlet 420 is connected to the clean water tank 100 through a pipe, and the second outlet is connected to the air inlet of the blow-suction dual-purpose air gun 300 through a pipe. The spray gun 200 is connected to the bottom of the clean water tank 100 through a pipe. Thus, the compressed air output from the main air duct pressurizes the interior of the clean water tank 100 through the first outlet 420, so that the cleaning liquid in the clean water tank 100 is delivered to the spray gun 200 under air pressure. The compressed air output from the main air duct provides an air source to the blow-suction dual-purpose air gun 300 through the second outlet. Thus, relying on the compressed air from the main air duct of the railway locomotive as a power source, it does not require external mains power or a dedicated generator for power supply, thereby meeting the cleaning needs of railway locomotives when temporarily parked at field work sites or temporary maintenance yards without fixed power supply facilities.

[0022] Optionally, the pneumatic cleaning device may also include a booster pump 510. The air inlet of the booster pump 510 can be connected to the first outlet 420 through a pipe, and the air outlet of the booster pump 510 can be connected to the top of the clean water tank 100 through a pipe. The booster pump 510 can be used to pressurize the compressed air output from the first outlet 420 a second time and then deliver it to the clean water tank 100.

[0023] It should be noted that the booster pump 510 is a pneumatic booster pump. The booster pump 510 can be a booster pump with a built-in pressure adjustment knob, which can be used to set the pressure value after secondary pressurization according to cleaning requirements. The booster pump 510 can be any existing product, and this embodiment will not elaborate further. For example, the pressure output from the main duct is typically between 0.6 MPa and 1.0 MPa, and the booster pump 510 can increase the pressure output from the main duct to between 10 MPa and 20 MPa. The pressure range of the main duct output and the pressure range increased by the booster pump 510 are not limited to the above pressure ranges; the above pressure ranges are merely illustrative.

[0024] The pneumatic cleaning device disclosed in this application embodiment is equipped with a booster pump 510, with the air inlet of the booster pump 510 connected to the first outlet 420 through a pipe, and the air outlet of the booster pump 510 connected to the top of the clean water tank 100 through a pipe. This allows the booster pump 510 to perform secondary pressurization on the compressed air output from the first outlet 420 before delivering it to the clean water tank 100, thereby further increasing the air pressure inside the clean water tank 100. The cleaning fluid in the clean water tank 100 can be delivered to the spray gun 200 through the pipe at a faster flow rate under higher pressure, ultimately forming a high-pressure jet stream.

[0025] Optionally, the pneumatic cleaning device may further include an accumulator 520. The accumulator 520 can be connected to the air outlet of the booster pump 510 via a pipe. For example, the accumulator 520 can be connected to an air hole on the pipe wall of the booster pump 510's air outlet via a pipe. The accumulator 520 and the clean water tank 100 can be connected in parallel to the air outlet of the booster pump 510 via a pipe. When the pressure output by the booster pump 510 is higher than the preset cleaning pressure, the accumulator 520 receives and stores the excess compressed air output by the booster pump 510; when the pressure output by the booster pump 510 is lower than the preset cleaning pressure, the accumulator 520 releases the stored compressed air to the clean water tank 100. The preset cleaning pressure can be equal to the pressure output by the booster pump 510 after secondary pressurization. The accumulator 520 can be an existing product, and this application does not impose specific restrictions on the selection of the accumulator 520.

[0026] The pneumatic cleaning device disclosed in this application embodiment is equipped with an accumulator 520, which is connected to the air outlet of a booster pump 510 via a pipe. When the pressure output by the booster pump 510 is higher than the preset cleaning pressure, the accumulator 520 receives and stores the excess compressed air output by the booster pump 510, preventing the pressure delivered to the clean water tank 100 from being too high. When the pressure output by the booster pump 510 is lower than the preset cleaning pressure, the accumulator 520 releases the stored compressed air to the clean water tank 100, preventing the pressure delivered to the clean water tank 100 from being too low. By setting the accumulator 520, the air pressure in the clean water tank 100 can be stabilized, which is beneficial to improving the stability of the cleaning fluid delivered to the spray gun 200.

[0027] Optionally, the pneumatic cleaning device may further include a cleaning agent injection pipeline 610 and a stirring device 620. The outlet end of the cleaning agent injection pipeline 610 may communicate with the space enclosed by the side wall of the clean water tank 100. A switch valve may be provided on the cleaning agent injection pipeline 610. When it is necessary to introduce cleaning agent into the clean water tank 100, the switch valve on the cleaning agent injection pipeline 610 may be opened, and the cleaning agent may be introduced into the clean water tank 100 through the cleaning agent injection pipeline 610. After the cleaning agent has been introduced into the clean water tank 100, the switch valve on the cleaning agent injection pipeline 610 may be closed to ensure the sealing of the internal environment of the clean water tank 100. The cleaning agent may be a mixture of an alkaline degreasing agent and a neutral protective agent in a 1:50 ratio. Of course, other cleaning agents may also be used. This application embodiment does not impose specific restrictions on the selection of cleaning agents.

[0028] The stirring device 620 can be installed in the clean water tank 100. The stirring device 620 can be used to stir the clean water and the cleaning agent in the clean water tank 100 when the cleaning agent is injected into the clean water tank 100 through the cleaning agent injection pipe 610, so that the two are mixed evenly to form a cleaning solution.

[0029] The pneumatic cleaning device disclosed in this application embodiment is equipped with a cleaning agent injection pipeline 610 and a stirring device 620. When the cleaning agent is injected into the clean water tank 100 through the cleaning agent injection pipeline 610, the stirring device 620 stirs the clean water and cleaning agent in the clean water tank 100 to make them mix evenly to form a cleaning solution.

[0030] Specifically, the stirring device 620 may include a pneumatic drive body 621, a drive shaft 622, and a stirring body. The pneumatic drive body 621 may be located in the clean water tank 100 and may be located outside the clean water tank 100. The first end of the drive shaft 622 may be fixedly connected to the power output end of the pneumatic drive body 621. The second end of the drive shaft 622 may pass through the top wall of the clean water tank 100 and be connected to the stirring body. The drive shaft 622 may slide and seal with the top wall of the tank. The gas distribution valve 400 may also include a third outlet. The air inlet of the pneumatic drive body 621 may be connected to the third outlet through a pipe to obtain driving power.

[0031] Specifically, a switching valve can be installed on the pipeline connecting the air inlet and the third outlet of the pneumatic drive body 621. By controlling the opening of the switching valve on the pipeline connecting the air inlet and the third outlet of the pneumatic drive body 621, the compressed gas in the main air duct can provide driving power to the pneumatic drive body 621. When the switching valve on the pipeline connecting the air inlet and the third outlet of the pneumatic drive body 621 is closed, the main air duct stops providing driving power to the pneumatic drive body 621.

[0032] The pneumatic cleaning device disclosed in this application configures the stirring device 620 to include a pneumatic drive body 621, a transmission shaft 622, and a stirring body. The air inlet of the pneumatic drive body 621 is connected to the third outlet of the gas distribution valve 400 through a pipe to obtain driving power. This allows the pneumatic drive body 621 to drive the stirring body to rotate through the transmission shaft 622, thereby achieving the stirring of clean water and cleaning agent in the clean water tank 100 through the rotation of the stirring body.

[0033] Specifically, the stirring body can be rod-shaped or blade-shaped, etc., and the structure of the stirring body is not specifically limited in this application embodiment. The pneumatic drive body 621 can be a vane-type pneumatic motor, a piston-type pneumatic motor, etc. The pneumatic drive body 621 can be selected from existing products, and the selection of the pneumatic drive body 621 is not specifically limited in this application embodiment.

[0034] Optionally, the pneumatic cleaning device may also include a separation device 710 and a wastewater tank 720. The inlet of the separation device 710 can be connected to the exhaust port of the blow-suction dual-purpose air gun 300 through a pipe, and the inlet of the wastewater tank 720 can be connected to the liquid outlet of the separation device 710 through a pipe. When the blow-suction dual-purpose air gun 300 is in suction mode, the wastewater containing solid particles sucked in by the blow-suction dual-purpose air gun 300 is transported to the separation device 710 through a pipe. The separation device 710 is used to separate the solid particles from the wastewater containing solid particles, so that the solid particles are collected in the particle collection box of the separation device 710. The separated wastewater flows into the wastewater tank 720 through a pipe, thereby realizing the classified recycling of solid particles and wastewater.

[0035] Specifically, the separation device 710 can be a cyclone separator. Of course, the separation device 710 can also be a baffle-type pneumatic separator, a filter-type pneumatic separator, etc. The embodiments of this application do not specifically limit the type of separation device 710.

[0036] Optionally, the pneumatic cleaning device may also include a filter screen, which is detachably installed in the pipe between the feed inlet of the separation device 710 and the suction and discharge port of the blow-suction dual-purpose airflow gun 300. The filter screen can be used to filter the suctioned wastewater containing particles, thereby achieving better separation of solid particles and wastewater.

[0037] Optionally, the pneumatic cleaning device may further include a reverse airflow flushing device 730, and the gas distribution valve 400 may further include a fourth outlet. The air inlet of the reverse airflow flushing device 730 may be connected to the fourth outlet through a pipe, and the air outlet of the reverse airflow flushing device 730 may be connected to a pipe downstream of the filter screen through a pipe. When the filter screen becomes clogged, the reverse airflow flushing device 730 obtains compressed air through the fourth outlet to blow reverse airflow to the downstream side of the filter screen.

[0038] Specifically, a switch valve can be installed on the connecting pipe between the air inlet and the fourth outlet of the reverse airflow flushing device 730. When the switch valve on the connecting pipe between the air inlet and the fourth outlet of the reverse airflow flushing device 730 is in the open state, the compressed air in the main air duct can provide a stable air source to the reverse airflow flushing device 730. The compressed air is then delivered to the pipe downstream of the filter screen through the air outlet of the reverse airflow flushing device 730, forming a reverse blowing airflow that is opposite to the normal operating airflow direction. This reverse blowing airflow can act on the downstream end face of the filter screen, generating a reverse impact force on the impurities (such as dust, particles, oil stains, etc.) clogging the filter screen mesh, causing the clogging impurities to detach from the filter screen and be discharged with the reverse airflow, thereby quickly restoring the air permeability of the filter screen. This avoids insufficient cleaning pressure or malfunction of the pneumatic cleaning device due to filter screen clogging, and online flushing can be completed without disassembling the filter screen, improving the ease of maintenance and continuity of operation of the device. It should be noted that when the reverse airflow flushing device 730 obtains compressed air through the fourth outlet to blow reverse airflow to the downstream side of the filter screen, the blow-suction dual-purpose airflow gun 300 cannot be in suction mode.

[0039] The reverse airflow flushing device 730 can be selected from "VIAIR 00040 high-pressure pneumatic backflush gun" or "KQSFG-KJ51 dual-path pneumatic backflush device", etc. This application embodiment does not impose specific restrictions on the selection of the reverse airflow flushing device 730.

[0040] Optionally, the side wall of the sewage tank 720 may be provided with a transparent viewing window 721, and a floating ball 722 may be installed inside the sewage tank 720. The viewing window 721 can be used to observe the floating position of the floating ball 722 to determine the height of the sewage level in the sewage tank 720, so that the sewage tank 720 can be emptied in time when the water level in the sewage tank 720 reaches the warning position.

[0041] Optionally, the pneumatic cleaning device may also include a frame 810, a clean water tank 100, a booster pump 510, an accumulator 520, a separation device 710, a wastewater tank 720, a reverse airflow flushing device 730, and other components that can be mounted on the frame 810. Wheels 820 may be mounted on the bottom of the frame 810, thereby making the structure of the pneumatic cleaning device more compact and facilitating the handling of the pneumatic cleaning device by operators.

[0042] The above embodiments of this utility model mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0043] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A pneumatic cleaning device for cleaning railway locomotives, characterized in that, Includes a clean water tank (100), a spray gun (200), a blow-suction dual-purpose airflow gun (300), and a gas distribution valve (400); The gas distribution valve (400) has a valve inlet (410), a first outlet (420), and a second outlet. The valve inlet (410) is used to seal and connect with the main air duct of the railway locomotive. The first outlet (420) is connected to the clean water tank (100) through a pipe. The second outlet is connected to the air inlet of the blow-and-suction air gun (300) through a pipe. The spray gun (200) is connected to the bottom of the clean water tank (100) through a pipe. The compressed air output from the main air duct is used to pressurize the interior of the clean water tank (100) through the first outlet (420) so that the cleaning liquid in the clean water tank (100) is delivered to the spray gun (200) under air pressure. The compressed air output from the main air duct is used to provide an air source to the blow-and-suction air gun (300) through the second outlet.

2. The pneumatic cleaning device according to claim 1, characterized in that, The pneumatic cleaning device also includes a booster pump (510). The air inlet of the booster pump (510) is connected to the first outlet (420) through a pipe, and the air outlet of the booster pump (510) is connected to the clean water tank (100) through a pipe. The booster pump (510) is used to pressurize the compressed air output from the first outlet (420) a second time and then deliver it to the clean water tank (100).

3. The pneumatic cleaning device according to claim 2, characterized in that, The pneumatic cleaning device also includes an accumulator (520), which is connected to the outlet of the booster pump (510) via a pipe. When the pressure output by the booster pump (510) is higher than the preset cleaning pressure, the accumulator (520) receives and stores the excess compressed air output by the booster pump (510); When the pressure output by the booster pump (510) is lower than the preset cleaning pressure, the accumulator (520) releases the stored compressed air to the clean water tank (100).

4. The pneumatic cleaning device according to claim 1, characterized in that, The pneumatic cleaning device also includes a cleaning agent injection pipeline (610) and a stirring device (620). The outlet end of the cleaning agent injection pipeline (610) is connected to the space enclosed by the side wall of the clean water tank (100). The stirring device (620) is located in the clean water tank (100). The stirring device (620) is used to stir the clean water in the clean water tank (100) and the cleaning agent when the cleaning agent is injected into the clean water tank (100) through the cleaning agent injection pipeline (610), so that the two are mixed evenly to form the cleaning solution.

5. The pneumatic cleaning device according to claim 4, characterized in that, The stirring device (620) includes a pneumatic drive body (621), a transmission shaft (622), and a stirring body. The pneumatic drive body (621) is located in the clean water tank (100) and outside the clean water tank (100). The first end of the transmission shaft (622) is fixedly connected to the power output end of the pneumatic drive body (621). The second end of the transmission shaft (622) passes through the top wall of the clean water tank (100) and is connected to the stirring body. The transmission shaft (622) and the top wall of the tank are slidably sealed. The gas distribution valve (400) also includes a third outlet, and the air inlet of the pneumatic drive body (621) is connected to the third outlet through a pipe to obtain driving power.

6. The pneumatic cleaning device according to claim 1, characterized in that, The pneumatic cleaning device also includes a separation device (710) and a sewage tank (720). The inlet of the separation device (710) is connected to the exhaust port of the blow-suction dual-purpose airflow gun (300) through a pipe, and the inlet of the sewage tank (720) is connected to the liquid outlet of the separation device (710) through a pipe. When the blow-suction dual-purpose airflow gun (300) is in suction mode, the wastewater containing solid particles sucked in by the blow-suction dual-purpose airflow gun (300) is transported to the separation device (710) through a pipeline. The separation device (710) is used to separate the solid particles in the wastewater containing solid particles from the wastewater, so that the solid particles are collected in the particle collection box of the separation device (710). The separated wastewater flows into the wastewater tank (720) through a pipeline.

7. The pneumatic cleaning device according to claim 6, characterized in that, The separation device (710) is a cyclone separator.

8. The pneumatic cleaning device according to claim 6, characterized in that, The pneumatic cleaning device also includes a filter screen, which is detachably disposed in the pipe between the feed inlet of the separation device (710) and the suction and discharge port of the blow-suction dual-purpose airflow gun (300) for filtering the suction-inhaled wastewater containing particles.

9. The pneumatic cleaning device according to claim 8, characterized in that, The pneumatic cleaning device also includes a reverse airflow flushing device (730), and the gas distribution valve (400) also includes a fourth outlet. The air inlet of the reverse airflow flushing device (730) is connected to the fourth outlet through a pipe, and the air outlet of the reverse airflow flushing device (730) is connected to a pipe downstream of the filter screen through a pipe. When the filter screen becomes clogged, the reverse airflow flushing device (730) obtains compressed air through the fourth outlet to blow reverse airflow to the downstream side of the filter screen.

10. The pneumatic cleaning device according to claim 6, characterized in that, The sewage tank (720) has a transparent viewing window (721) on its side wall. A suspended ball (722) is floating inside the sewage tank (720). The viewing window (721) is used to observe the floating position of the suspended ball (722) in order to determine the height of the sewage level inside the sewage tank (720).

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