Welding robot walking track

Abstract

The invention discloses a walking track of a welding robot, and aims to solve the technical problem that welding slag of a welding head and the surface of a workpiece is not easy to clean at present, the walking track structurally comprises a track, limiting slideways are fixedly mounted on two sides of the top of the track, and limiting sliding boxes are slidably mounted on the tops of the two limiting slideways. Through the combination of the stretching mechanism, the gas storage assembly and the exhaust assembly, when a pull rope pulls a sealing plug in the sealing tank to move towards one side, the sealing plug can extrude gas in the sealing tank and compress the gas in the sealing tank into the gas storage tank, a control valve on the gas storage tank is opened at regular time, and the gas storage tank is closed. When the welding robot continuously moves the welding head to weld a workpiece, the control valve is opened, gas in the gas storage tank is conveyed into the cleaning pipe, gas flow is sprayed out from the spray head at one end of the cleaning pipe, and it is guaranteed that the welding head of the welding robot cleans the surface of the welding head and the surface of the workpiece during welding; the workpiece welding efficiency is prevented from being affected by welding slag on the welding head of the welding robot and the workpiece surface.

Description

Technical Field

[0001] The present invention relates to the technical field of welding robots, specifically to a walking track for a welding robot. Background Art

[0002] In the field of automated welding, welding robots have become an important tool for improving production efficiency and welding quality. However, with the increasing complexity and diversification of welding tasks, welding robots face many challenges in practical applications, especially in the cleaning problem of the welding head and the workpiece surface.

[0003] During the welding process, impurities such as welding slag and spatter are likely to be generated on the surface of the welding head and the workpiece. These impurities not only affect the welding quality, resulting in defects such as uneven weld seams and pores, but may also damage the welding head of the welding robot and shorten its service life.

[0004] Moreover, there are also potential safety hazards. In high-temperature, high-humidity or toxic and harmful welding environments, manual cleaning poses a greater safety hazard and may pose a threat to the physical health of operators.

[0005] Therefore, it is necessary to design a new technical solution to solve this problem. Through the combination of a stretching mechanism, a gas storage component, and an exhaust component, automatic cleaning of the welding head and the workpiece surface is achieved, and the cleaning effect can be achieved without manual approach, greatly improving work safety. Summary of the Invention

[0006] The purpose of the present invention is to provide a walking track for a welding robot to solve the technical problem of the current difficulty in cleaning welding slag on the welding head and the workpiece surface.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A walking track for a welding robot includes a track. On both sides of the top of the track, limit slides are fixedly installed. On the top of the two groups of limit slides, limit slide boxes are slidably installed. A bracket is fixedly installed between the two groups of limit slide boxes. The bracket moves horizontally through a bidirectional drive component. A welding robot is installed on the top of the track. An exhaust component is installed on the welding robot. A sealed tank is fixedly installed on one side of the track. Both sides of the sealed tank are fixedly installed with the two sides of the bracket through a stretching mechanism. An installation box is fixedly installed on the side wall of the bracket. A gas storage component is installed in the installation box. The gas storage component is connected and installed with the exhaust component through a conduit.

[0008] As a preferred embodiment of the present invention, the bidirectional drive component includes toothed plates fixedly installed on both sides of the inner wall of the track, gears rotatably installed on both sides of the bottom of the bracket, and a transmission belt drivingly installed at the bottom of the two groups of gears. The two groups of gears are respectively engaged with the two groups of toothed plates.

[0009] As a preferred embodiment of the present invention, a motor is fixedly installed on one side of the top of the bracket, the driving output end of the motor is in transmission connection with a transmission shaft, and the other end of the transmission shaft is fixedly installed with the central axis of a gear located on one side.

[0010] As a preferred embodiment of the present invention, a mounting seat is welded on the top of the bracket, the mounting seat is fixedly installed with a base through bolts, and the base is welded to the bottom of the welding robot.

[0011] As a preferred embodiment of the present invention, the exhaust assembly includes a plurality of groups of equidistantly distributed mounting clamps fixedly installed on the robotic arm of the welding robot through bolts, a cleaning pipe fixedly installed inside the plurality of groups of mounting clamps, a heating box connected and installed at one end of the cleaning pipe, and a spray head connected and installed at the other end of the cleaning pipe, and the spray heads are distributed at the port of the welding robot.

[0012] As a preferred embodiment of the present invention, a controller is fixedly installed on the outside of the heating box, the controller is connected and installed with a heating rod through a wire, and a temperature sensor is fixedly installed inside the heating box.

[0013] As a preferred embodiment of the present invention, the stretching mechanism includes a sealing plug hermetically connected inside the sealed tank, pull ropes fixedly installed on both sides of the sealing plug, fixing members fixedly installed at the other ends of the two pull ropes, and a pulling frame fixedly installed with the two fixing members. The two pulling frames are respectively welded on both sides of the bracket.

[0014] As a preferred embodiment of the present invention, pulleys are rotatably installed on both sides of the track, the two pulleys are respectively slidably connected with the two pull ropes, sealing cylinders are connected and installed on both sides of the sealed tank, sealing rubber rings are fixedly installed inside the two sealing cylinders, and the two sealing cylinders are respectively hermetically connected with the two pull ropes.

[0015] As a preferred embodiment of the present invention, the gas storage assembly includes a gas storage tank fixedly installed inside the installation box, a control valve connected and installed at the top, an air outlet pipe connected and installed at the outlet port of the control valve, and a pressure gauge connected and installed on the side wall of the gas storage tank. The air outlet pipe is connected and installed with one end of the cleaning pipe.

[0016] As a preferred embodiment of the present invention, both ends of the side walls of the gas storage tank are connected and installed with docking tubes, the other ends of the two groups of docking tubes are connected and installed with air guide pipes, the two groups of air guide pipes are connected and installed with both sides of the sealed tank respectively, one side of the two groups of air guide pipes is connected and installed with an intake pipe, and a one-way valve is installed on each group of the air guide pipes and the intake pipe, the flow direction of the one-way valve on the air guide pipe is from the inside of the sealed tank to the inside of the gas storage tank, and the flow direction of the one-way valve on the intake pipe is from the outside to the inside of the sealed tank, and filters are fixedly installed on the outer walls of the two groups of intake pipes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention combines a stretching mechanism, a gas storage component and an exhaust component. When the pull rope pulls the sealing plug inside the sealed tank to move to one side, the sealing plug will squeeze the gas inside the sealed tank and compress the gas inside the sealed tank into the gas storage tank. The control valve on the gas storage tank is opened at a fixed time. As the welding robot continuously moves the welding head to weld the workpiece, the control valve will open to transport the gas inside the gas storage tank to the inside of the cleaning pipe. A strong airflow will be ejected from the nozzle at one end of the cleaning pipe, which can ensure that the welding head of the welding robot can clean the welding head and the surface of the workpiece during welding, thereby avoiding the presence of welding slag on the welding head of the welding robot and the surface of the workpiece that affects the welding efficiency of the workpiece.

[0019] 2. The present invention has two sets of gears meshed with two sets of toothed plates respectively, and the top of one set of gears is fixedly connected to the motor driving end. When the motor on the top of the bracket is driven, a set of gears on the bottom of the bracket will be driven to rotate. Since the central axes of the two sets of gears are connected by a transmission belt, the two sets of gears can be driven to rotate synchronously, and the two sets of gears are meshed with the two sets of toothed plates respectively, so that the gears on both sides of the bracket move synchronously on the toothed plates on both sides of the track, thereby smoothly driving the welding robot on the top of the bracket to move horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the welding robot of the present invention;

[0023] Figure 3 It is a schematic diagram of the stretching mechanism structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the gas storage assembly of the present invention;

[0025] Figure 5Schematic diagram of the sealed tank structure of the present invention;

[0026] Figure 6 Schematic diagram of the two-way drive assembly structure of the present invention;

[0027] In the figure: 1, track; 11, limit slideway; 12, limit slide box; 13, bracket; 14, mounting seat; 15, base; 16, welding robot; 17, mounting clamp; 18, cleaning pipe; 181, heating box; 182, nozzle; 2, sealed tank; 21, sealing plug; 22, pull rope; 23, pull frame; 24, pulley; 25, sealing cylinder; 3, mounting box; 31, gas storage tank; 32, control valve; 33, air outlet pipe; 34, docking pipe; 35, air guide pipe; 36, air inlet pipe; 37, one-way valve; 38, pressure gauge; 4, toothed plate; 41, gear; 42, transmission belt; 43, motor. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] Embodiment 1: Welding robot walking track, see Figures 1 to 6 , the welding robot walking track includes a track 1. Both sides of the top of the track 1 are fixedly installed with limit slideways 11. Limit slide boxes 12 are slidably installed on the tops of the two groups of limit slideways 11. A bracket 13 is fixedly installed between the two groups of limit slide boxes 12. The bracket 13 moves horizontally through a two-way drive assembly. A welding robot 16 is installed on the top of the track 1. An exhaust assembly is installed on the welding robot 16. A sealed tank 2 is fixedly installed on one side of the track 1. Both sides of the sealed tank 2 are fixedly installed with the two sides of the bracket 13 through a stretching mechanism. A mounting box 3 is fixedly installed on the side wall of the bracket 13. A gas storage assembly is installed in the mounting box 3. The gas storage assembly is communicatively installed with the exhaust assembly through a conduit.

[0031] By combining the stretching mechanism, the gas storage component and the exhaust component, when the operator drives the motor 43 to operate the bracket 13, the welding robot 16 on the bracket 13 moves along the direction of the track 1, which is convenient for the welding robot 16 to weld at different positions on the track 1, greatly improving the welding efficiency. At the same time, when the bracket 13 at the bottom of the welding robot 16 moves horizontally along the track 1, the pull racks 23 distributed on both sides of the bracket 13 will pull the two sets of pull ropes 22 to retract and release. When the pull rope 22 pulls the sealing plug 21 inside the sealed tank 2 to move to one side, the sealing plug 21 will squeeze the gas inside the sealed tank 2, compressing the gas inside the sealed tank 2 into the gas storage tank 31, and the cavity distributed at the other end of the sealing plug 21 will form a negative pressure, and the outside air is introduced into the sealed tank 2 through the air inlet pipe 36. As the bracket 13 moves back and forth along the track 1, gas can be transported to the inside of the gas storage tank 31, and a large amount of gas can be stored in the gas storage tank 31. The control valve 32 on the gas storage tank 31 is opened at a fixed time, and as the welding machine When the robot 16 continuously moves the welding head to weld the workpiece, the control valve 32 will open to transport the gas inside the gas tank 31 to the inside of the cleaning pipe 18, and a strong airflow will be ejected from the nozzle 182 at one end of the cleaning pipe 18, which can ensure that the welding head of the welding robot 16 cleans the welding head and the surface of the workpiece during welding, so as to avoid welding slag on the welding head of the welding robot 16 and the surface of the workpiece affecting the welding efficiency of the workpiece. At the same time, two sets of gears 41 are respectively meshed with the two sets of toothed plates 4, and the top of one set of gears 41 is fixedly connected to the driving end of the motor 43. When the motor 43 at the top of the bracket 13 is driven, a set of gears 41 at the bottom of the bracket 13 will be driven to rotate. Since the central axes of the two sets of gears 41 are connected by the transmission belt 42, the two sets of gears 41 can be driven to rotate synchronously, and the two sets of gears 41 are respectively meshed with the two sets of toothed plates 4, so that the gears 41 on both sides of the bracket 13 move synchronously on the toothed plates 4 on both sides of the track 1, thereby smoothly driving the welding robot 16 on the top of the bracket 13 to move horizontally.

[0032] Specifically, the bidirectional drive assembly includes toothed plates 4 fixedly mounted on both sides of the inner wall of the track 1, gears 41 rotatably mounted on both sides of the bottom of the bracket 13, and a transmission belt 42 installed at the bottom of the two sets of gears 41. The two sets of gears 41 are respectively meshed with the two sets of toothed plates 4. A motor 43 is fixedly mounted on one side of the top of the bracket 13. The output end of the motor 43 is connected to the transmission shaft, and the other end of the transmission shaft is fixedly mounted on the central axis of the gear 41 on one side.

[0033] Two sets of gears 41 are respectively engaged with two sets of toothed plates 4, and the top of one set of gears 41 is fixedly connected to the driving end of the motor 43. When the motor 43 at the top of the driving bracket 13 is driven, it will drive the rotation of a set of gears 41 at the bottom of the bracket 13. Since the central axes of the two sets of gears 41 are connected by a transmission belt 42, the two sets of gears 41 can be driven to rotate synchronously. And the two sets of gears 41 are respectively engaged with the two sets of toothed plates 4, so that the gears 41 on both sides of the bracket 13 can walk synchronously on the toothed plates 4 on both sides of the track 1, thereby driving the welding robot 16 at the top of the bracket 13 to move horizontally smoothly.

[0034] Furthermore, a mounting seat 14 is welded to the top of the bracket 13. The mounting seat 14 is fixedly installed with a base 15 by bolts, and the base 15 is welded to the bottom of the welding robot 16. The exhaust assembly includes a plurality of equally spaced mounting clamps 17 fixedly installed on the robotic arm of the welding robot 16 by bolts, a cleaning pipe 18 fixedly installed inside the plurality of mounting clamps 17, a heating box 181 connected and installed at one end of the cleaning pipe 18, and a spray head 182 connected and installed at the other end of the cleaning pipe 18. The spray heads 182 are distributed at the ports of the welding robot 16.

[0035] When the welding robot 16 continuously moves the welding head to weld the workpiece, the control valve 32 will open, and the gas inside the gas storage tank 31 will be transported into the cleaning pipe 18. A strong air flow will spray out from the spray heads 182 at one end of the cleaning pipe 18, which can ensure that when the welding head of the welding robot 16 is welding, the welding head and the surface of the workpiece are cleaned.

[0036] Still further, a controller is fixedly installed on the outside of the heating box 181. The controller is connected and installed with a heating rod through a wire, and a temperature sensor is fixedly installed inside the heating box 181.

[0037] After the gas is transported into the cleaning pipe 18, the controller is turned on at the same time, and the heating rod inside the heating box 181 is turned on to heat the inside of the heating box 181 at a constant temperature, so that the discharged gas reaches a certain stability, avoiding that as the temperature decreases, the welding slag will gradually harden and affect the cleaning of the welding slag.

[0038] It should be noted that the stretching mechanism includes a sealing plug 21 sealed and connected inside the sealing tank 2, pulling ropes 22 fixedly installed on both sides of the sealing plug 21, fixing pieces fixedly installed at the other ends of the two pulling ropes 22, and a pulling frame 23 fixedly installed with the two fixing pieces. The two pulling frames 23 are respectively welded on both sides of the bracket 13.

[0039] After the pull rope 22 pulls the sealing plug 21 inside the sealed tank 2 to move to one side, the sealing plug 21 will squeeze the gas inside the sealed tank 2, compress the gas inside the sealed tank 2 into the gas storage tank 31, and a negative pressure will be formed in the cavity at the other end of the sealing plug 21. The outside air will be introduced into the sealed tank 2 through the air inlet pipe 36. As the bracket 13 moves reciprocally along the track 1, gas can be transported into the gas storage tank 31, and a large amount of gas can be stored inside the gas storage tank 31.

[0040] It should be noted that pulleys 24 are rotatably installed on both sides of the track 1. The two groups of pulleys 24 are respectively slidably connected to the two groups of pull ropes 22. Sealing cylinders 25 are connected and installed on both sides of the sealed tank 2. Sealing rubber rings are fixedly installed inside the two groups of sealing cylinders 25. The two groups of sealing cylinders 25 are respectively sealed and connected to the two groups of pull ropes 22.

[0041] When the bracket 13 at the bottom of the welding robot 16 moves horizontally along the track 1, the pulling frames 23 distributed on both sides of the bracket 13 will pull and release the two groups of pull ropes 22. Cooperating with the pulleys 24 installed on both sides of the track 1, the pull ropes 22 can be supported and towed to prevent the pull ropes 22 from being damaged by friction with the side wall of the track 1. At the same time, due to the sealing rubber rings installed inside the sealing cylinders 25, the sealing performance between the pull ropes 22 and the sealing cylinders 25 can be increased, and the gas can be squeezed into the gas storage tank 31.

[0042] It is worth introducing that the gas storage assembly includes a gas storage tank 31 fixedly installed inside the installation box 3, a control valve 32 connected and installed at the top, an air outlet pipe 33 connected and installed at the outlet port of the control valve 32, and a pressure gauge 38 connected and installed on the side wall of the gas storage tank 31. The air outlet pipe 33 is connected and installed with one end of the cleaning pipe 18.

[0043] After the pull rope 22 pulls the sealing plug 21 inside the sealed tank 2 to move to one side, the sealing plug 21 will squeeze the gas inside the sealed tank 2, compress the gas inside the sealed tank 2 into the gas storage tank 31, and at the same time open the control valve 32 to quantitatively discharge the high-strength air pressure inside the gas storage tank 31, transport the gas inside the gas storage tank 31 into the cleaning pipe 18, and through the pressure gauge 38 connected and installed on one side of the gas storage tank 31, the pressure value inside the gas storage tank 31 can be detected at all times to ensure the safety of the gas storage tank 31.

[0044] It should be emphasized that butt joint pipes 34 are connected and installed at both ends of the side wall of the gas storage tank 31. The other ends of the two groups of butt joint pipes 34 are both connected and installed with guide pipes 35. The two groups of guide pipes 35 are respectively connected and installed with both sides of the sealed tank 2. Air inlet pipes 36 are connected and installed on one side of the two groups of guide pipes 35. Check valves 37 are installed on each of the guide pipes 35 and the air inlet pipes 36. The flow direction of the check valve 37 on the guide pipe 35 is from the inside of the sealed tank 2 into the gas storage tank 31, and the flow direction of the check valve 37 on the air inlet pipe 36 is from the outside into the sealed tank 2. Filter meshes are fixedly installed on the outer walls of the two groups of air inlet pipes 36.

[0045] After the pull cord 22 pulls the sealing plug 21 inside the sealed tank 2 to move to one side, the sealing plug 21 will squeeze the gas inside the sealed tank 2. With the outlet pipe 33 and the guide pipe 35 installed in communication between the sealed tank 2 and the gas storage tank 31, the gas inside the sealed tank 2 can be compressed into the gas storage tank 31. And a negative pressure will be formed in the cavity at the other end of the sealing plug 21, and the outside air can be introduced into the sealed tank 2 through the inlet pipe 36. As the bracket 13 reciprocates along the track 1, gas can be transported into the gas storage tank 31, and a large amount of gas can be stored in the gas storage tank 31.

[0046] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the claimed claim.

[0047] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Welding robot traveling track, including a track (1), characterized in that: On both sides of the top of the track (1), limit slides (11) are fixedly installed. On the top of the two groups of limit slides (11), limit slide boxes (12) are slidably installed. A bracket (13) is fixedly installed between the two groups of limit slide boxes (12). The bracket (13) moves horizontally through a bidirectional drive assembly. On the top of the track (1), a welding robot (16) is installed, and an exhaust assembly is installed on the welding robot (16). On one side of the track (1), a sealed tank (2) is fixedly installed. Both sides of the sealed tank (2) are fixedly installed with the two sides of the bracket (13) through a stretching mechanism. An installation box (3) is fixedly installed on the side wall of the bracket (13). An air storage assembly is installed in the installation box (3). The air storage assembly is connected and installed with the exhaust assembly through a conduit.

2. The welding robot walking track according to claim 1, characterized in that: The bidirectional drive assembly includes toothed plates (4) fixedly installed on both sides of the inner wall of the track (1), gears (41) rotatably installed on both sides of the bottom of the bracket (13), and a drive belt (42) drivingly installed at the bottom of the two groups of gears (41). The two groups of gears (41) are respectively engaged with the two groups of toothed plates (4).

3. The welding robot walking track according to claim 2, wherein: On one side of the top of the bracket (13), a motor (43) is fixedly installed. The drive output end of the motor (43) is in transmission connection with a transmission shaft, and the other end of the transmission shaft is fixedly installed with the central axis of the gear (41) on one side.

4. The welding robot walking track according to claim 1, characterized in that: An installation seat (14) is welded on the top of the bracket (13). A base (15) is fixedly installed on the installation seat (14) through bolts. The base (15) is welded to the bottom of the welding robot (16).

5. The welding robot walking track according to claim 1, characterized in that: The exhaust assembly includes a plurality of equally spaced installation clamps (17) fixedly installed on the robotic arm of the welding robot (16) through bolts, a cleaning pipe (18) fixedly installed inside the plurality of installation clamps (17), a heating box (181) connected and installed at one end of the cleaning pipe (18), and a spray head (182) connected and installed at the other end of the cleaning pipe (18). The spray heads (182) are distributed at the port of the welding robot (16).

6. The welding robot walking track according to claim 5, wherein: A controller is fixedly installed on the outside of the heating box (181). The controller is connected and installed with a heating rod through a wire. A temperature sensor is fixedly installed inside the heating box (181).

7. The welding robot walking track according to claim 1, characterized in that: The stretching mechanism includes a sealing plug (21) hermetically connected inside the sealed tank (2), pull ropes (22) fixedly installed on both sides of the sealing plug (21), fixing members fixedly installed at the other ends of the two groups of pull ropes (22), and a pull frame (23) fixedly installed with the two groups of fixing members. The two groups of pull frames (23) are respectively welded on both sides of the bracket (13).

8. The welding robot walking track according to claim 7, characterized in that: Pulleys (24) are rotatably installed on both sides of the track (1). The two groups of pulleys (24) are respectively slidably connected with the two groups of pull ropes (22). Sealing cylinders (25) are connected and installed on both sides of the sealed tank (2). Sealing rubber rings are fixedly installed inside the two groups of sealing cylinders (25). The two groups of sealing cylinders (25) are respectively hermetically connected with the two groups of pull ropes (22).

9. The welding robot walking track according to claim 1, characterized in that: The gas storage assembly includes a gas storage tank (31) fixedly installed inside the installation box (3), a control valve (32) connected and installed at the top, an air outlet pipe (33) connected and installed at the outlet port of the control valve (32), and a pressure gauge (38) connected and installed on the side wall of the gas storage tank (31). The air outlet pipe (33) is connected and installed with one end of the cleaning pipe (18).

10. The welding robot walking track according to claim 9, characterized in that: Docking pipes (34) are connected and installed at both ends of the side wall of the gas storage tank (31). The other ends of the two groups of docking pipes (34) are both connected and installed with air guide pipes (35). The two groups of air guide pipes (35) are respectively connected and installed with both sides of the sealing tank (2). An air inlet pipe (36) is connected and installed on one side of each of the two groups of air guide pipes (35). One-way valves (37) are installed on each of the air guide pipes (35) and the air inlet pipes (36). The flow direction of the one-way valve (37) on the air guide pipe (35) is from the inside of the sealing tank (2) into the inside of the gas storage tank (31), and the flow direction of the one-way valve (37) on the air inlet pipe (36) is from the outside into the inside of the sealing tank (2). Filter meshes are fixedly installed on the outer walls of the two groups of air inlet pipes (36).

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