Flexible shaft of gun dredging machine
By designing an adjustable limiter and a copper core sealing structure for the soft shaft of the cleaning machine, the problem of damage to the internal equipment of the air-conditioning duct by the cleaning brush head is solved, and a safe and efficient cleaning effect is achieved.
Patent Information
- Application Number
- CN202422563731.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-23
AI Technical Summary
When cleaning air-conditioning ducts, it is difficult to accurately control the strength of the cleaning brush head with existing cleaning machines, which can easily damage sensors, valves and other equipment inside the ducts, and the cleaning effect is poor.
A flexible shaft for a gun-clearing machine is designed, including a flexible shaft body, a set flexible shaft sleeve and an adjustable limiter. The limiter is fixed to the flexible shaft sleeve through a threaded limit sleeve and an elastic sleeve. It can stop the rotation before the cleaning brush head approaches the equipment to avoid collision, and the connection strength and sealing are improved through the copper core and sealing ring.
It effectively avoids the damage of the cleaning brush head to the internal equipment of the pipeline, ensures the cleaning effect and safety, and improves the stability and sealing of the connection.
Smart Images
Figure CN223337982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air-conditioning cleaning equipment, in particular to a flexible shaft of a gun-clearing machine. Background Art
[0002] During the operation of central air conditioners, the main unit condenser is prone to scaling. This scaling can have a number of negative consequences. Firstly, it reduces the cooling efficiency of the central air conditioner, preventing the equipment from fully realizing its intended performance. Secondly, it shortens the equipment's lifespan and, in severe cases, can even cause high-voltage failures in the central air conditioner main unit, leading to downtime. Therefore, regular maintenance of central air conditioner main units is essential, but traditional cleaning equipment is limited and cannot meet the needs of long-distance cleaning.
[0003] In order to meet the needs of long-distance cleaning of equipment, a cleaning machine came into being. The cleaning machine mainly uses mechanical force to remove dirt from central air-conditioning ducts. It uses a motor to drive the rotation of a long flexible shaft. The front end of the flexible shaft is usually connected to a cleaning brush head made of steel wire, nylon and other materials. The cleaning brush head has a certain hardness. When the flexible shaft rotates and advances in the pipe, the cleaning brush head will produce friction with the inner wall of the pipe, thereby scraping off dirt, dust, rust and other impurities attached to the inner wall of the pipe. However, in the process of advancing the cleaning brush head, it is difficult to directly observe the internal conditions of the pipe. When the length of the flexible shaft entering the pipe is too long, it is even more difficult to accurately control its force. It is very easy for the flexible shaft to accidentally hit the sensors, valves and other equipment components inside the air-conditioning duct, thereby causing damage to the internal equipment.
[0004] Therefore, how to effectively prevent the cleaning brush head from damaging sensors, valves and other equipment inside the pipe and ensure the cleaning effect and safety of the air-conditioning pipe is an urgent problem that technicians in this field need to solve. Utility Model Content
[0005] In order to effectively prevent the cleaning brush head from damaging sensors, valves and other equipment inside the pipe and ensure the cleaning effect and safety of the air-conditioning pipe, the present application provides a flexible shaft for a cleaning machine.
[0006] The flexible shaft of the gun-pass machine provided in this application adopts the following technical solution:
[0007] A flexible shaft for a gun-pass machine includes a flexible shaft body, one end of the flexible shaft body is fixedly connected to a driving member, an end of the flexible shaft body away from the driving member is connected to a pipe brush, a flexible shaft sleeve is sleeved on the outside of the flexible shaft body, the flexible shaft sleeve is rotatably connected to the flexible shaft body, and a position-adjustable limiter is provided on the flexible shaft sleeve, the size of the limiter is larger than the inner diameter of the air-conditioning pipe, and the outer diameter of the flexible shaft sleeve is smaller than the inner diameter of the air-conditioning pipe.
[0008] Furthermore, the limiter includes a first limit sleeve and a second limit sleeve that are threadedly connected to each other, the first limit sleeve and the second limit sleeve are threadedly connected, the first limit sleeve and the second limit sleeve are both sleeved on the soft shaft sleeve, and an elastic sleeve is abutted and connected between the first limit sleeve and the second limit sleeve near the inner side of the soft shaft sleeve, and the elastic sleeve is sleeved on the outside of the soft shaft sleeve.
[0009] Furthermore, the elastic sleeve includes the first rubber clamping ring component and the second rubber clamping ring component which are sleeved on the soft shaft sleeve, the inner side surface of the first rubber clamping ring component is set as a smooth cylindrical surface, the second rubber clamping ring component is sleeved on the outer side of the first rubber clamping ring component, the outer side surface of the first rubber clamping ring component is provided with an annular groove, and the inner side surface of the second rubber clamping ring component is fixedly provided with a hook corresponding to the annular groove, and the hook on the second rubber clamping ring component is buckled and hung on the first rubber clamping ring component through the annular groove.
[0010] Furthermore, one end of the flexible shaft sleeve close to the driving member is fixedly connected to a water pipe joint, a large nut of the water pipe joint is rotatably connected to the water pipe joint, the large nut of the water pipe joint is connected to the gun-clearing machine, the internal thread of the water pipe joint is connected to a copper core sleeved on the outside of the flexible shaft body, a through hole is opened on the copper core, the through hole is sealed and connected to the flexible shaft sleeve, and a water gap is left between the inner side surface of the flexible shaft sleeve and the outer side surface of the flexible shaft body.
[0011] Furthermore, the end face of the copper core is movably abutted against the end face of the driving member, and a flexible shaft joint is connected between the flexible shaft body and the pipe brush. The end of the flexible shaft joint close to the flexible shaft body is fixedly sleeved on the flexible shaft body, and the end of the flexible shaft joint close to the flexible shaft body is movably abutted against the end of the flexible shaft sleeve. A pipe brush mounting screw hole is provided at the end of the flexible shaft joint away from the flexible shaft body, and an external thread is provided at the end of the pipe brush corresponding to the pipe brush mounting screw hole.
[0012] Furthermore, the water pipe joint is connected to a small nut of the water pipe joint at one end away from the large nut of the water pipe joint, and a waterproof joint is connected to one end of the water pipe joint of the small nut of the water pipe joint. A first sealing ring is abutted and connected between the water pipe joint and the small nut of the water pipe joint, and a second sealing ring is abutted and connected between the small nut of the water pipe joint and the waterproof joint.
[0013] Furthermore, the large nut of the water pipe joint, the small nut of the water pipe joint and the limiter are all provided with a knurled anti-slip structure.
[0014] Furthermore, the end of the waterproof joint away from the small nut of the water pipe joint is provided with a spring sleeved on the outside of the flexible shaft sleeve, and the spring, the waterproof joint and the outside of the flexible shaft sleeve are fixedly sleeved with a heat shrink tube.
[0015] Furthermore, the driving member includes a sleeve portion, a mounting hole is opened inside the sleeve portion corresponding to the flexible shaft body, a limiting portion is provided at one end of the sleeve portion close to the flexible shaft body, and a driving portion is provided at one end of the sleeve portion away from the flexible shaft body, and the driving portion has at least one driving surface that can drive the driving member to rotate.
[0016] The beneficial effects achieved include at least the following:
[0017] 1. The present application can conveniently insert the flexible shaft body and the duct brush into the air-conditioning duct by utilizing the flexible shaft sleeve. The duct brush can be driven to rotate by the driving member to drive the flexible shaft body to rotate. When the duct brush rotates, the inner wall of the air-conditioning duct is cleaned. During the cleaning process, the position of the limiter is first adjusted according to the length of the air-conditioning duct, and then the duct brush is inserted into the air-conditioning duct for cleaning. The limiter will stop before the cleaning brush head of the duct brush hits the sensor, valve and other equipment components inside the duct, thereby effectively avoiding damage to the sensor, valve and other equipment inside the duct by the cleaning brush head, thereby ensuring the cleaning effect and safety of the air-conditioning duct.
[0018] 2. The present application utilizes the threaded connection between the first limit sleeve and the second limit sleeve to make the first limit sleeve and the second limit sleeve approach each other or move away from each other by rotation. When the first limit sleeve and the second limit sleeve approach each other or move away from each other, the elastic sleeve can be squeezed or released. After the elastic sleeve is squeezed and deformed, it will be tightly attached between the soft shaft sleeve and the first limit sleeve and the second limit sleeve, thereby fixing the limiter as a whole on the soft shaft sleeve; after the elastic sleeve is released and squeezed, it will return to between the first limit sleeve and the second limit sleeve and then relax the adhesion to the soft shaft sleeve. In this way, the limiter can be conveniently moved on the soft shaft sleeve to facilitate precise adjustment of the position of the limiter.
[0019] 3. The present application can effectively prevent fatigue fracture at the connection between the flexible shaft sleeve and the waterproof joint by utilizing the heat shrink tube and the spring, and further increase the sealing and connection strength of the connection between the flexible shaft sleeve and the water pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0021] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.
[0022] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.
[0023] Figure 4 It is a schematic diagram of the structural decomposition of a limiter in an embodiment of the present application.
[0024] Figure 5 This is a schematic diagram of the installation structure of the driving component in one embodiment of the present application.
[0025] Description of the accompanying drawings: 100, flexible shaft body; 101, driving member; 1011, sleeve portion; 1012, mounting hole; 1013, limiting portion; 1014, driving portion; 1015, driving surface; 102, pipe brush; 103, flexible shaft sleeve; 104, flexible shaft joint; 105, pipe brush mounting screw hole; 106, external thread; 200, stopper; 201, first limiting sleeve; 202, second limiting sleeve; 203, elastic sleeve; 203 1. First rubber clamping ring component; 2032. Second rubber clamping ring component; 2033. Ring groove; 2034. Hook; 301. Water pipe joint; 302. Large nut for water pipe joint; 303. Copper core; 304. Through hole; 305. Small nut for water pipe joint; 306. Waterproof joint; 307. First sealing ring; 308. Second sealing ring; 309. Spring; 310. Heat shrink tubing; 311. Third sealing ring; 312. Knurled anti-slip structure. DETAILED DESCRIPTION
[0026] The following is combined with Figure 1-5 This application is described in further detail.
[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.
[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. A person of ordinary skill in the art will be able to understand the specific meanings of the above terms in this application based on the specific circumstances.
[0029] The embodiment of the present application discloses a flexible shaft of a gun-clearing machine.
[0030] Please refer to Figures 1 to 5 In one embodiment of the present application, a flexible shaft for a gun cleaning machine includes a flexible shaft body 100, one end of which is fixedly connected to a driving member 101 that is transmission-connected to the gun cleaning machine, and an end of the flexible shaft body 100 away from the driving member 101 that is connected to a pipe brush 102. A flexible shaft sleeve 103 is sleeved on the outside of the flexible shaft body 100, and the flexible shaft sleeve 103 is rotatably connected to the flexible shaft body 100. By using the flexible shaft sleeve 103, the flexible shaft body 100 and the pipe brush 102 can be easily inserted into the air conditioning duct. The flexible shaft body 100 is driven to rotate by the driving member 101, which drives the pipe brush 102 to rotate. When the pipe brush 102 rotates, it cleans the inner wall of the air conditioning duct.
[0031] Please refer to Figures 1 to 5 In one embodiment of the present application, the driving member 101 includes a sleeve portion 1011, and a mounting hole 1012 is opened inside the sleeve portion 1011 corresponding to the flexible shaft body 100. After the flexible shaft body 100 is inserted into the mounting hole 1012, it is tightened using hydraulic pliers to form a fixed connection. In this way, the flexible shaft body 100 can be installed simply and conveniently using the sleeve portion 1011.
[0032] Please refer to Figures 1 to 5 In one embodiment of the present application, a limiting portion 1013 is provided at one end of the sleeve portion 1011 close to the soft shaft body 100. At the same time, the limiting portion 1013 can limit the position of the soft shaft body 100 to ensure that the soft shaft body 100 can be stably and reliably installed inside the soft shaft sleeve 103.
[0033] Please refer to Figures 1 to 5In one embodiment of the present application, a drive portion 1014 is provided at one end of the sleeve portion 1011 away from the flexible shaft body 100. The structural shape of the drive portion 1014 matches the drive structure on the gun-passing machine. To facilitate processing and ensure reliable transmission, the drive portion 1014 is preferably configured as a columnar structure with a square cross-section. The columnar structure with a square cross-section can form four drive surfaces 1015. The drive surfaces 1015 can enable the drive portion 1014 to drive the flexible shaft body 100 to rotate.
[0034] Please refer to Figures 1 to 5 In one embodiment of the present application, a flexible shaft for a blasting machine is provided with an adjustable position stopper 200 on the flexible shaft sleeve 103. The size of the stopper 200 is larger than the inner diameter of the air conditioning duct, while the outer diameter of the flexible shaft sleeve 103 is smaller than the inner diameter of the air conditioning duct. By utilizing the stopper 200, the insertion depth of the flexible shaft sleeve 103 into the air conditioning duct can be accurately set, thereby ensuring that the cleaning brush head of the duct brush 102 does not impact and damage components inside the duct.
[0035] Please refer to Figures 1 to 5 In one embodiment of the present application, the limiter 200 includes a first limit sleeve 201 and a second limit sleeve 202 that are threadedly connected to each other. The first limit sleeve 201 and the second limit sleeve 202 are threadedly connected. The first limit sleeve 201 and the second limit sleeve 202 are both sleeved on the flexible shaft sleeve 103. An elastic sleeve 203 is abutted and connected between the first limit sleeve 201 and the second limit sleeve 202, near the inner side of the flexible shaft sleeve 103. The elastic sleeve 203 is sleeved on the outer side of the flexible shaft sleeve 103. The elastic sleeve 203 is squeezed by the first limit sleeve 201 and the second limit sleeve 202 so that the elastic sleeve 203 is tightly attached between the flexible shaft sleeve 103 and the first limit sleeve 201 and the second limit sleeve 202, thereby fixing the limiter 200 as a whole on the flexible shaft sleeve 103.
[0036] Please refer to Figures 1 to 5In one embodiment of the present application, the elastic sleeve 203 includes a first rubber clamping ring component 2031 and a second rubber clamping ring component 2032, which are sleeved on the soft shaft sleeve 103. The inner side surface of the first rubber clamping ring component 2031 is set to a smooth cylindrical surface, and the second rubber clamping ring component 2032 is sleeved on the outer side of the first rubber clamping ring component 2031. The outer side surface of the first rubber clamping ring component 2031 is provided with an annular groove 2033, and a hook 2034 is fixedly provided on the inner side surface of the second rubber clamping ring component 2032 corresponding to the annular groove 2033. The hook 2034 on the second rubber clamping ring component 2032 is hooked on the first rubber clamping ring component 2031 through the annular groove 2033. The hook 2034 can synchronously squeeze the first rubber clamping ring component 2031 and the second rubber clamping ring component 2032 when the first limiting sleeve 201 and the second limiting sleeve 202 approach each other, and promptly and effectively spread the first rubber clamping ring component 2031 and the second rubber clamping ring component 2032 apart from each other when the first limiting sleeve 201 and the second limiting sleeve 202 move away from each other, thereby releasing the tight contact of the elastic sleeve 203 on the flexible shaft sleeve 103, thereby ensuring the stability and reliability of the limiter 200 during operation.
[0037] Please refer to Figures 1 to 5 After the grease is in the hopper 301, the grease 302 is tightened and the grease 303 is tightened, so that the grease 303 can be tightened and the grease 303 is tightened.
[0038] Please refer to Figures 1 to 5In one embodiment of the present application, the end face of the copper core 303 is movably abutted against the end face of the driving member 101, and a flexible shaft joint 104 is connected between the flexible shaft body 100 and the pipe brush 102. The end of the flexible shaft joint 104 close to the flexible shaft body 100 is fixedly mounted on the flexible shaft body 100 by hydraulic clamp compression, and the end of the flexible shaft joint 104 close to the flexible shaft body 100 is movably abutted against the end of the flexible shaft sleeve 103. The end of the flexible shaft joint 104 away from the flexible shaft body 100 is provided with a pipe brush mounting screw hole 105, and the end of the pipe brush 102 is provided with an external thread 106 corresponding to the pipe brush mounting screw hole 105. The end face of the copper core 303 and the end of the flexible shaft joint 104 close to the flexible shaft body 100 can confine the flexible shaft body 100 inside the flexible shaft sleeve 103, and by adjusting the position of the copper core 303, the gap between the flexible shaft joint 104 and the end of the flexible shaft sleeve 103 can be adjusted, so that the water speed sprayed from the flexible shaft joint 104 and the end of the flexible shaft sleeve 103 can be adjusted, which is conducive to ensuring the efficiency and effect of flushing.
[0039] Please refer to Figures 1 to 5 In one embodiment of the present application, a small water pipe joint nut 305 is connected to the end of the water pipe joint 301 away from the large water pipe joint nut 302, and a waterproof joint 306 is connected to the end of the small water pipe joint nut 305 away from the water pipe joint 301. A first sealing ring 307 is abutted and connected between the water pipe joint 301 and the small water pipe joint nut 305. The first sealing ring 307 can securely and hermetically connect the small water pipe joint nut 305 to the water pipe joint 301. A second sealing ring 308 is abutted and connected between the small water pipe joint nut 305 and the waterproof joint 306. The second sealing ring 308 can securely and hermetically connect the waterproof joint 306 to the small water pipe joint nut 305. After installing the small nut 305 of the water pipe joint and the waterproof joint 306, the small nut 305 of the water pipe joint and the waterproof joint 306 will squeeze and deform the first sealing ring 307 and the second sealing ring 308 and tightly stick to the outer side of the flexible shaft sleeve 103, thereby increasing the sealing and connection strength of the connection between the flexible shaft sleeve 103 and the water pipe joint 301.
[0040] Please refer to Figures 1 to 5 In one embodiment of the present application, a knurled anti-slip structure 312 is provided on the large nut 302 of the water pipe joint, the small nut 305 of the water pipe joint and the limiter 200. The knurled anti-slip structure 312 can increase the friction between the human hand and the large nut 302 of the water pipe joint, the small nut 305 of the water pipe joint and the limiter 200. During the installation and disassembly process, the knurled anti-slip structure 312 can greatly improve the convenience of operation, avoid slipping, and improve work efficiency.
[0041] Please refer to Figures 1 to 5In one embodiment of the present application, a spring 309 is provided on the end of the waterproof connector 306 away from the small water pipe connector nut 305, which is sleeved on the outside of the flexible shaft sleeve 103. A heat shrink tube 310 is fixedly mounted on the spring 309, the waterproof connector 306, and the outside of the flexible shaft sleeve 103. The heat shrink tube 310 and the spring 309 can effectively prevent fatigue fracture at the connection between the flexible shaft sleeve 103 and the waterproof connector 306, and further enhance the sealing and connection strength between the flexible shaft sleeve 103 and the water pipe connector 301.
[0042] Please refer to Figures 1 to 5 In one embodiment of the present application, a third sealing ring 311 is provided between the water pipe joint 301 and the gun-passing machine. The third sealing ring 311 can not only achieve the purpose of waterproofing after tightening, but also provide axial force for the large nut 302 of the water pipe joint to prevent the installation from loosening due to the vibration of the machine.
[0043] Please refer to Figures 1 to 5 In one embodiment of the present application, the first sealing ring 307, the second sealing ring 308, and the third sealing ring 311 are all configured as O-rings. O-rings have excellent sealing performance. Due to their good elastic deformation, they can tightly fill the sealing gap during installation. When pressurized, they will automatically expand to enhance the seal. In addition, O-rings are widely applicable and come in a variety of sizes and specifications to meet the requirements of different pipe diameters and adapt to a variety of media. They are easy to install, low in cost, and highly cost-effective. At the same time, the O-ring structure is simple and reliable, not prone to damage and failure, reducing the frequency of maintenance and replacement, and providing a strong guarantee for the stable operation of the water pipe system.
[0044] Please refer to Figures 1 to 5 In one embodiment of the present application, the first sealing ring 307 and the second sealing ring 308 are made of nitrile rubber material. Nitrile rubber not only has good oil resistance. In the water pipe system, if it comes into contact with an oily medium, the nitrile rubber sealing ring can effectively prevent the penetration of oil and ensure that the sealing performance is not affected. In addition, the wear resistance of the nitrile rubber sealing ring is also good. During installation and use, the sealing ring may be subjected to a certain amount of friction. Nitrile rubber can withstand this friction and is not easily damaged, thereby extending the service life of the sealing ring. At the same time, the heat resistance of nitrile rubber is also outstanding. It can maintain stable performance within a certain temperature range and adapt to usage scenarios at different ambient temperatures.
[0045] Please refer to Figures 1 to 5In one embodiment of the present application, the third sealing ring 311 is made of fluororubber material. Fluororubber has excellent high temperature resistance. In a high temperature environment, the fluororubber sealing ring can still maintain good elasticity and sealing performance, and will not soften, deform or lose its sealing effect due to high temperature. And fluororubber is extremely corrosion-resistant. It can resist the erosion of a variety of chemical substances, including acids, alkalis, organic solvents, etc., to ensure that the sealing ring remains reliable in a complex chemical environment, thereby extending the service life of the sealing ring. At the same time, the sealing of fluororubber is stable and reliable. It can fit tightly to the sealing surface, effectively prevent leakage, and provide strong protection for the safe operation of the water pipe system.
[0046] The implementation principle of a flexible shaft of a gun-passing machine in the embodiment of the present application is as follows:
[0047] During the cleaning process, first adjust the position of the limiter 200 according to the length of the air-conditioning duct, and then insert the duct brush 102 into the air-conditioning duct for cleaning. The limiter 200 will stop before the cleaning brush head of the duct brush 102 hits the sensors, valves and other equipment components inside the duct, thereby effectively avoiding the cleaning brush head from damaging the sensors, valves and other equipment inside the duct, and ensuring the cleaning effect and safety of the air-conditioning duct.
[0048] When adjusting the limiter 200, it is only necessary to rotate the first limiting sleeve 201 or the second limiting sleeve 202. The threaded connection between the first limiting sleeve 201 and the second limiting sleeve 202 can be used to drive the first limiting sleeve 201 and the second limiting sleeve 202 to move closer to or away from each other during rotation. When the first limiting sleeve 201 and the second limiting sleeve 202 are close to each other, the first limiting sleeve 201 and the second limiting sleeve 202 will squeeze the elastic sleeve 203. After the elastic sleeve 203 is squeezed and deformed, it will stick to the flexible shaft sleeve 103 and the first limiting sleeve 201 and The first and second limiting sleeves 201 and 202 are respectively used to fix the limiter 200 on the flexible shaft sleeve 103; when the first limiting sleeve 201 and the second limiting sleeve 202 are away from each other, the first limiting sleeve 201 and the second limiting sleeve 202 will relax the squeezing of the elastic sleeve 203, and the elastic sleeve 203 will recover between the first limiting sleeve 201 and the second limiting sleeve 202 after being not squeezed, thereby relaxing the tight contact with the flexible shaft sleeve 103, so that the limiter 200 can be easily moved on the flexible shaft sleeve 103 to facilitate the precise adjustment of the position of the limiter 200.
[0049] During the cleaning process, the water pipe connector 301 can be installed on the cleaning machine through the large nut 302 of the water pipe connector. The water pipe connector 301 can input the cleaning liquid output by the cleaning machine through the through hole 304 on the copper core 303 into the space between the inner side of the flexible shaft sleeve 103 and the outer side of the flexible shaft body 100, so that the cleaning liquid can be input into the air-conditioning pipe to clean the dirt attached to the pipe wall.
[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A flexible shaft for a gun-passing machine, characterized in that: The invention comprises a flexible shaft body (100), one end of the flexible shaft body (100) is fixedly connected to a driving member (101), an end of the flexible shaft body (100) away from the driving member (101) is connected to a pipe brush (102), a flexible shaft sleeve (103) is sleeved on the outside of the flexible shaft body (100), the flexible shaft sleeve (103) is rotatably connected to the flexible shaft body (100), and a position-adjustable stopper (200) is provided on the flexible shaft sleeve (103), the size of the stopper (200) is larger than the inner diameter of the air-conditioning pipe, and the outer diameter of the flexible shaft sleeve (103) is smaller than the inner diameter of the air-conditioning pipe.
2. The flexible shaft of a gun-clearing machine according to claim 1, characterized in that: The limiter (200) comprises a first limit sleeve (201) and a second limit sleeve (202) which are threadedly connected to each other, the first limit sleeve (201) and the second limit sleeve (202) being threadedly connected, the first limit sleeve (201) and the second limit sleeve (202) being sleeved on the soft shaft sleeve (103), an elastic sleeve (203) being abutted and connected between the first limit sleeve (201) and the second limit sleeve (202) near the inner side of the soft shaft sleeve (103), and the elastic sleeve (203) being sleeved on the outer side of the soft shaft sleeve (103).
3. The flexible shaft of a gun-clearing machine according to claim 2, characterized in that: The elastic sleeve (203) comprises a first rubber clamping ring component (2031) and a second rubber clamping ring component (2032) which are sleeved on the soft shaft sleeve (103); the inner side surface of the first rubber clamping ring component (2031) is set as a smooth cylindrical surface; the second rubber clamping ring component (2032) is sleeved on the outer side of the first rubber clamping ring component (2031); an annular groove (2033) is provided on the outer side surface of the first rubber clamping ring component (2031); a hook (2034) is fixedly provided on the inner side surface of the second rubber clamping ring component (2032) corresponding to the annular groove (2033); the hook (2034) on the second rubber clamping ring component (2032) is hooked on the first rubber clamping ring component (2031) through the annular groove (2033).
4. The flexible shaft of a gun-clearing machine according to claim 1, characterized in that: One end of the flexible shaft sleeve (103) close to the driving member (101) is fixedly connected to a water pipe joint (301), a large water pipe joint nut (302) is rotatably connected to the water pipe joint (301), and the large water pipe joint nut (302) is connected to the gun-clearing machine. The internal thread of the water pipe joint (301) is connected to a copper core (303) sleeved on the outside of the flexible shaft body (100), and a through hole (304) is opened on the copper core (303). The through hole (304) is sealed and communicated with the flexible shaft sleeve (103), and a water gap is left between the inner side surface of the flexible shaft sleeve (103) and the outer side surface of the flexible shaft body (100).
5. The flexible shaft of a gun-clearing machine according to claim 4, characterized in that: The end face of the copper core (303) is movably abutted against the end face of the driving member (101); a flexible shaft joint (104) is connected between the flexible shaft body (100) and the duct brush (102); an end of the flexible shaft joint (104) close to the flexible shaft body (100) is fixedly sleeved on the flexible shaft body (100); an end of the flexible shaft joint (104) close to the flexible shaft body (100) is movably abutted against the end of the flexible shaft sleeve (103); an end of the flexible shaft joint (104) away from the flexible shaft body (100) is provided with a duct brush mounting screw hole (105); and an end of the duct brush (102) is provided with an external thread (106) corresponding to the duct brush mounting screw hole (105).
6. The flexible shaft of a gun-clearing machine according to claim 4, characterized in that: One end of the water pipe joint (301) away from the water pipe joint large nut (302) is connected to a water pipe joint small nut (305), and one end of the water pipe joint small nut (305) away from the water pipe joint (301) is connected to a waterproof joint (306). A first sealing ring (307) is abutted and connected between the water pipe joint (301) and the water pipe joint small nut (305), and a second sealing ring (308) is abutted and connected between the water pipe joint small nut (305) and the waterproof joint (306).
7. The flexible shaft of a gun-clearing machine according to claim 6, characterized in that: The large water pipe joint nut (302), the small water pipe joint nut (305), and the stopper (200) are all provided with a knurled anti-slip structure (312).
8. The flexible shaft of a gun-clearing machine according to claim 6, characterized in that: One end of the waterproof joint (306) away from the water pipe joint small nut (305) is provided with a spring (309) sleeved on the outside of the flexible shaft sleeve (103), and the spring (309) and the waterproof joint (306) and the outside of the flexible shaft sleeve (103) are fixedly sleeved with a heat shrink tube (310).
9. The flexible shaft of a gun-clearing machine according to claim 6, characterized in that: A third sealing ring (311) is provided between the water pipe joint (301) and the gun-passing machine. The first sealing ring (307), the second sealing ring (308) and the third sealing ring (311) are all configured as O-rings. The first sealing ring (307) and the second sealing ring (308) are made of nitrile rubber material, and the third sealing ring (311) is made of fluororubber material.
10. The flexible shaft of a gun-clearing machine according to any one of claims 1 to 9, characterized in that: The driving member (101) comprises a sleeve portion (1011), an interior of the sleeve portion (1011) is provided with a mounting hole (1012) corresponding to the flexible shaft body (100), an end of the sleeve portion (1011) close to the flexible shaft body (100) is provided with a limiting portion (1013), and an end of the sleeve portion (1011) away from the flexible shaft body (100) is provided with a driving portion (1014), and the driving portion (1014) has at least one driving surface (1015) capable of driving the driving member (101) to rotate.