Air exhaust pipe joint

Abstract

The utility model discloses an air exhaust pipe connector, and relates to the field of air exhaust pipe connectors, the air exhaust pipe connector comprises a connecting pipe, a first connector is fixedly connected to one side of the surface of the connecting pipe, an air exhaust pipe body is in threaded connection with the interior of the first connector, and a second connector is fixedly connected to one side of the surface of the air exhaust pipe body; an anti-loosening assembly used for enabling the threaded connection position of the first connector and the exhaust pipe body to be tightly matched is arranged outside the second connector, and auxiliary assemblies used for preventing the exhaust pipe body and the first connector from falling off are arranged outside the first connector and the second connector. The first connector extrudes the rubber pad and the first spring to a certain degree in the installation process to deform the rubber pad and the first spring to generate elastic force, the first fixing plate reversely pushes the first connector through the elastic force of the rubber pad and the first spring, in this way, the threaded connection position of the first connector and the exhaust pipe body is in close fit, and the loosening risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air pipe joints, in particular to an air pipe joint. BACKGROUND

[0002] The air pipe joint is a key component for connecting air extraction equipment and pipelines, ensuring efficient transmission of gas or liquid in the system, and is widely used in the fields of automobiles, industries, medical treatment, laboratories, etc. The air pipe joint is generally connected by thread connection between the connecting head and the air pipe. Long-term operation under air pressure or influence of machine vibration will cause loosening of the connecting pipe, resulting in gas leakage.

[0003] The existing air pipe joint can be referred to the Chinese utility model patent with publication number CN218914033U, which discloses an air pipe joint for air cylinder. However, the following problems still exist in actual use:

[0004] In the comparative document, the clamping unit is fixed by the threaded column. When the connecting head is affected by the vibration of the connecting equipment, the threaded column will gradually loosen, directly reducing the clamping force of the clamping unit, weakening the tightness between the connecting pipe and the connecting head. If the connecting head is pulled at one end, the force is directly transmitted to the threads of the connecting head, causing it to bear a large shear force and tensile force, which is easy to damage or break. UTILITY MODEL CONTENT

[0005] In order to improve the problem of large vibration influence on the connecting pipe and the connecting head, the present application provides an air pipe joint.

[0006] The air pipe joint provided by the present application adopts the following technical solution:

[0007] An air pipe joint, comprising a connecting pipe, a first joint fixedly connected to one side of the surface of the connecting pipe, an air pipe body threadedly connected to the inside of the first joint, a second joint fixedly connected to one side of the surface of the air pipe body, and an anti-loosening assembly provided on the outside of the second joint for tightly fitting the threadedly connected part of the first joint and the air pipe body, and an auxiliary assembly provided on the outside of the first joint and the second joint for preventing the air pipe body from falling off the first joint.

[0008] By adopting the above technical solution, the anti-loosening assembly for the threadedly connected part can effectively cope with the vibration working condition and reduce the risk of loosening. The auxiliary assembly forms secondary protection to prevent complete falling off in extreme cases.

[0009] Preferably, the anti-loosening assembly comprises a second fixed plate symmetrically fixedly connected to one side of the surface of the second joint, a rubber pad fixedly connected to the outer surface of the air extraction pipe body is fixedly connected to the side of the second fixed plate away from the second joint, and a first fixed plate is fixedly connected to the side of the rubber pad away from the second fixed plate.

[0010] By adopting the technical scheme, the two fixed plates form a rigid support framework, ensuring structural stability.

[0011] Preferably, a plurality of circumferential circular grooves are arranged in the rubber pad.

[0012] By adopting the technical scheme, the circular grooves are used for mounting the first springs, so that the first springs provide a buffering force.

[0013] Preferably, an elastic plate is fixedly connected between the first fixed plate and the second fixed plate and located in the circular grooves, and the circular grooves and the elastic plate are provided with the first springs fixedly connected to the surfaces of the first fixed plate and the second fixed plate.

[0014] By adopting the technical scheme, the elastic plate guides the linear compression of the springs, avoiding lateral instability.

[0015] Preferably, the auxiliary assembly comprises a protective shell symmetrically movably connected to the outer surfaces of the first joint and the second joint, and a semicircular annular groove extending into the first joint and the second joint is arranged in the surface of each end of the protective shell.

[0016] By adopting the technical scheme, the split structure of the protective shell allows non-destructive maintenance, reducing maintenance costs.

[0017] Preferably, a moving plate with one end extending to the surface of the protective shell is slidably connected in the semicircular annular groove, and a sliding groove is arranged in the surface of the moving plate.

[0018] By adopting the technical scheme, the moving plate extending to the surface of the protective shell facilitates the user to change the protection state of the protective shell.

[0019] Preferably, a fixed ring plate fixedly connected to the surface of the protective shell is slidably connected in the sliding groove.

[0020] By adopting the technical scheme, the fixed ring plate and the sliding groove are used for limiting the moving direction of the moving plate.

[0021] Preferably, a second spring fixedly connected to the inner wall of the moving plate is fixedly connected to the surface of one end of the fixed ring plate located in the sliding groove.

[0022] By adopting the technical scheme, the second spring is used for keeping the moving plate in the interior of the first joint, thereby keeping the locked state.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The first joint is used to compress the rubber pad and the first spring to a certain extent during installation, so that the rubber pad improves the sealing between the air pipe body and the first joint. In addition, the first fixed plate pushes the first joint in the opposite direction through the elastic force of the rubber pad and the first spring, so that the first joint and the threaded connection of the air pipe body are tightly matched, reducing the risk of loosening.

[0025] 2. By installing the protective shell at the connection between the air pipe body and the first joint, dust accumulation can be prevented, and the connection can be kept clean. The protective shell is fixed by the moving plate inside the semicircular ring groove, so that the protective shell is fixed to the connecting pipe and the air pipe body, and the fixing effect will not be weakened due to vibration. If the connecting head is pulled at one end, the force is mainly transmitted to the protective shell, rather than directly acting on the threaded connection, reducing the stress on the threads and avoiding damage or loosening of the threads. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic view of the overall structure of the present application;

[0027] Figure 2 It is a schematic view of the anti-loose assembly position structure of the present application;

[0028] Figure 3 It is a disassembly view of the connecting pipe and the air pipe body of the present application;

[0029] Figure 4 It is a schematic view of the anti-loose assembly structure of the present application;

[0030] Figure 5 It is a schematic view of the auxiliary assembly structure of the present application.

[0031] Reference signs: 1, connecting pipe; 2, air pipe body; 3, first joint; 4, second joint;

[0032] 5, anti-loose assembly; 51, first fixed plate; 52, rubber pad; 53, circular groove; 54, second fixed plate; 55, first spring;

[0033] 6, auxiliary assembly; 61, semicircular ring groove; 62, protective shell; 63, moving plate; 64, sliding groove; 65, fixed ring plate; 66, second spring. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying Figures 1-5 The present application will be further described in detail.

[0035] The present application discloses an air pipe joint.

[0036] Reference Figure 1 , Figure 2 A suction pipe joint, comprising a connecting pipe 1, a first joint 3 is fixedly connected to the surface of one end of the connecting pipe 1 close to a suction pipe body 2, the inner wall of the first joint 3 is threadedly arranged with the surface of the suction pipe body 2 inside the first joint 3, a second joint 4 is fixedly connected to the middle of the outer surface of the suction pipe body 2, a loosening prevention assembly 5 is arranged on the side of the second joint 4 close to the first joint 3, the loosening prevention assembly 5 is located between the second joint 4 and the first joint 3, and the loosening prevention assembly 5 is arranged around the surface of the suction pipe body 2, so that the loosening prevention assembly 5 can improve the sealing between the first joint 3 and the second joint 4, and there is no gap between the first joint 3 and the second joint 4, the loosening prevention assembly 5 is used to keep the tight fit of the threaded connection between the first joint 3 and the suction pipe body 2, and an auxiliary assembly 6 is arranged outside the first joint 3 and the second joint 4, and the auxiliary assembly 6 is used to prevent the suction pipe body 2 from falling off the first joint 3.

[0037] The loosening prevention assembly 5 is pre-installed on the outside of the second joint 4, when the connecting pipe 1 is connected with the suction pipe body 2, the first joint 3 of the connecting pipe 1 is rotated and sleeved on the threaded part of the suction pipe body 2, and in the rotating process, the first joint 3 extrudes the loosening prevention assembly 5 to a certain extent, the loosening prevention assembly 5 makes the threaded connection between the first joint 3 and the suction pipe body 2 tightly fit, and reduces the risk of loosening, and after the connecting pipe 1 is connected with the suction pipe body 2, the auxiliary assembly 6 is installed at the connection between the connecting pipe 1 and the suction pipe body 2, so as to prevent the connecting pipe 1 from completely falling off the suction pipe body 2 in extreme cases.

[0038] Reference Figure 3 , Figure 4The anti-loose assembly 5 comprises a second fixed plate 54 symmetrically fixedly connected to one side of the surface of the second joint 4. The top of the second fixed plate 54 is fixedly connected to the bottom of the rubber pad 52, and the rubber pad 52 is arranged on the side of the second fixed plate 54 away from the second joint 4. The rubber pad 52 is arranged in close contact with the surface of the air exhaust pipe body 2. The middle rubber pad 52 provides flexible buffering and absorbs axial and radial vibration energy. The top of the rubber pad 52 is fixedly connected to the bottom of the first fixed plate 51. The first fixed plate 51 is arranged on the side of the rubber pad 52 away from the second fixed plate 54. The first fixed plate 51 and the second fixed plate 54 are used to ensure the structural stability. A circular groove 53 is arranged in the interior of the rubber pad 52. The circular groove 53 penetrates the top and the bottom of the rubber pad 52. The circular groove 53 is circumferentially arranged in the interior of the rubber pad 52. A plurality of first springs 55 are arranged in the distributed pressure field. The bottom surface of the first fixed plate 51 located in the interior of the circular groove 53 is fixedly connected to one end of the first spring 55 and the telescopic plate. The top surface of the second fixed plate 54 located in the interior of the circular groove 53 is fixedly connected to the other end of the first spring 55 and the telescopic plate. The first spring 55 is located in the interior of the telescopic plate and the circular groove 53. The telescopic plate is used to guide the linear compression of the first spring 55, avoid lateral instability, and prevent the rubber pad 52 from being pressed into the movement range of the first spring 55.

[0039] When the first joint 3 is installed, the first fixed plate 51 is pushed to move in the direction close to the rubber pad 52, thereby pressing the rubber pad 52, the first spring 55 and the telescopic plate. The rubber pad 52 improves the sealing between the air exhaust pipe body 2 and the first joint 3 and reduces the risk of loosening.

[0040] Referring to Figure 3 , Figure 5The auxiliary assembly 6 comprises protective shells 62 symmetrically movably connected to the outer surfaces of the first joint 3 and the second joint 4. The two protective shells 62 can form a cylindrical shape and are tightly fitted between each other. The length of the protective shells 62 is greater than the length of the first joint 3, the second joint 4 and the anti-loosening assembly 5. Half circular ring grooves 61 are formed at the two ends of the protective shells 62 away from the first joint 3 and the second joint 4, respectively. Two half circular ring grooves 61 extend through the interiors of the half circular ring grooves 61 and extend into the interiors of the first joint 3 and the second joint 4, respectively. In this way, the moving plates 63 located in the interiors of the half circular ring grooves 61 can clamp the protective shells 62, and the protective shells 62 are not easy to fall off without moving the moving plates 63. The moving plates 63 are slidably connected to the interiors of the half circular ring grooves 61. The surface of the moving plates 63 located in the interiors of the half circular ring grooves 61 is tightly fitted with the inner walls of the half circular ring grooves 61 without gaps, so as to improve the stability of the installation of the protective shells 62. The end of the moving plates 63 away from the half circular ring grooves 61 is located at the side of the protective shells 62 away from the first joint 3, so as to facilitate the user to control the moving plates 63. The surface of the moving plates 63 close to the half circular ring grooves 61 is provided with sliding grooves 64 located in the interiors of the half circular ring grooves 61. The sliding grooves 64 are slidably connected with fixed ring plates 65. The end of the fixed ring plates 65 away from the sliding grooves 64 is fixed to the surface of the protective shells 62 between the connecting pipes 1 and the moving plates 63. The fixed ring plates 65 are in the shape of n. The end of the moving plates 63 close to the connecting pipes 1 is slid to the inner side of the fixed ring plates 65. The end of the fixed ring plates 65 located in the interiors of the sliding grooves 64 is fixedly connected with the top end of second springs 66. The second springs 66 are located in the interiors of the sliding grooves 64. The bottom of the second springs 66 is fixedly connected with the inner wall of the sliding grooves 64.

[0041] When the protective shells 62 are installed, the installer needs to move the moving plates 63 at the two ends of the protective shells 62 to the direction of the fixed ring plates 65 in advance. The moving plates 63 press the second springs 66. At this time, the bottom end of the moving plates 63 completely enters the interiors of the half circular ring grooves 61 of the protective shells 62. When the protective shells 62 are sleeved to the surfaces of the first joint 3 and the second joint 4, the installer releases the moving plates 63. The elastic force of the second springs 66 pushes the moving plates 63 to slide in the interiors of the half circular ring grooves 61. The moving plates 63 at the two ends of the protective shells 62 enter the interiors of the half circular ring grooves 61 of the first joint 3 and the second joint 4, respectively, to clamp the protective shells 62, so as to prevent the protective shells 62 from easily falling off and improve the fixing effect of the protective shells 62 on the first joint 3 and the second joint 4.

[0042] The implementation principle of the air exhaust pipe joint is as follows: when the installer installs the connecting pipe 1 and the air exhaust pipe body 2, the installer needs to put one end of the first joint 3 on the connecting pipe 1 into the threaded end of the air exhaust pipe body 2 and rotate, when the first joint 3 touches the first fixed plate 51 and pushes the first fixed plate 51 to move a small distance during the rotation, the first fixed plate 51 moves and extrudes the rubber pad 52 and the first spring 55 to deform and generate elastic force, the first fixed plate 51 is reversely pushed against the first joint 3 through the elastic force of the rubber pad 52 and the first spring 55, so that the first joint 3 is tightly matched with the threaded connection of the air exhaust pipe body 2, and the risk of loosening is reduced.

[0043] When the connecting pipe 1 and the air exhaust pipe body 2 are tightly connected, the installer puts the protective shell 62 on the surfaces of the first joint 3 and the second joint 4, and the two ends of the protective shell 62 are located at the two ends of the first joint 3 and the second joint 4, by installing the protective shell 62 at the connection between the air exhaust pipe body 2 and the first joint 3, dust accumulation can be prevented, the connection can be kept clean, and the protective shell 62 needs to be moved by the installer before being put in, the moving plate 63 is extruded to make the moving plate 63 located in the semicircular groove 61 of the protective shell 62, after being put in, the moving plate 63 is aligned with the semicircular groove 61, the installer releases the moving plate 63 and pushes the moving plate 63 into the interior of the first joint 3 through the elastic force of the second spring 66, the protective shell 62 is fixed by the moving plate 63 located in the interior of the semicircular groove 61, so that the protective shell 62 fixes the connecting pipe 1 and the air exhaust pipe body 2, and the fixing effect will not be weakened due to vibration, if the connecting head is pulled, the force is mainly transmitted to the protective shell 62, instead of directly acting on the threaded connection, the stress of the thread is reduced, and the thread is prevented from being damaged or loosened.

[0044] The above is only an optional embodiment of the present disclosure, and is not used to limit the present disclosure, and the present disclosure can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A gas extraction pipe joint, characterized by: The utility model provides a connecting pipe, the surface one side of connecting pipe (1) is fixedly connected with first joint (3), the inside threaded connection of first joint (3) has suction pipe body (2), the surface one side of suction pipe body (2) is fixedly connected with second joint (4), the outside of second joint (4) is provided with the anti -loose subassembly (5) for first joint (3) and suction pipe body (2) threaded connection place close cooperation, the outside of first joint (3) and second joint (4) is provided with the auxiliary assembly (6) for preventing suction pipe body (2) and first joint (3) fall off.

2. A gas extraction pipe joint according to claim 1, characterised in that: The anti-loose subassembly (5) includes the second fixed plate (54) that is fixedly connected to the surface one side of the second joint (4) symmetrically, the rubber pad (52) that is fixedly connected with the outer surface of the suction pipe body (2) is fixedly connected to the side away from the second fixed plate (54) of the second fixed plate (54), and the first fixed plate (51) is fixedly connected to the side away from the second fixed plate (54) of the rubber pad (52).

3. A gas extraction tube fitting according to claim 2, characterised in that: The rubber pad (52) is internally provided with circumferentially arranged circular grooves (53).

4. A gas extraction tube fitting according to claim 2, characterised in that: The first fixed plate (51) and the second fixed plate (54) are fixedly connected with the expansion plate in the circular groove (53), and the circular groove (53) and the expansion plate are internally provided with the first spring (55) fixedly connected with the surfaces of the first fixed plate (51) and the second fixed plate (54).

5. A gas extraction tube fitting according to claim 1, characterised in that: The auxiliary assembly (6) includes the protective shell (62) movably connected to the outer surfaces of the first joint (3) and the second joint (4) symmetrically, and the semicircular groove (61) extending into the first joint (3) and the second joint (4) is formed in the surface side of both ends of the protective shell (62).

6. A gas extraction tube fitting according to claim 5, characterised in that: The semicircular groove (61) is internally provided with the moving plate (63) with one end extending to the surface of the protective shell (62), and the surface side of the moving plate (63) is provided with the sliding groove (64).

7. A gas extraction tube fitting according to claim 6, characterised in that: The sliding groove (64) is internally provided with the fixed ring plate (65) fixedly connected with the surface side of the protective shell (62).

8. A gas extraction tube fitting according to claim 7, characterised in that: The fixed ring plate (65) is internally provided with the second spring (66) fixedly connected with the inner wall of the moving plate (63) on one end surface.

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