Pneumatic non-return pipe joint

Abstract

The utility model discloses a pneumatic non-return pipe joint, which relates to the technical field of non-return pipe joints and comprises a joint body, a deflation ring is mounted on the surface of the joint body, a connecting sleeve is mounted on the surface of the deflation ring, a limiting spring is mounted on the surface of the connecting sleeve, and an extrusion ring is mounted on the surface of the limiting spring. The pneumatic non-return pipe joint is characterized in that a circular groove is formed in a connecting ring, a sliding rod is arranged in the circular groove, an extrusion ring is arranged on the surface of the circular groove, a sealing ring is arranged on the surface of the extrusion ring, a valve element body is arranged on the surface of the sealing ring, and a connecting spring is arranged on the surface of the valve element body. The situation that dust particles enter the connector body when the connector body is not inserted into the air inlet pipe, so that the air inlet pipe is difficult to insert into the connector body is avoided, the cleanliness of the interior of the connector body is improved, and the efficiency of inserting the air inlet pipe into the connector body is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of non-return pipe joints, in particular to a pneumatic non-return pipe joint. Background Art

[0002] A check fitting is a valve used in piping systems that allows fluid to flow freely in one direction and blocks fluid flow in the other direction. Check fittings are often used to prevent fluid backflow, prevent overpressure or over-vacuum in piping systems, and reduce leakage of liquids or gases.

[0003] With regard to the above-mentioned and existing related technologies, the following defects often exist: in the actual use of the pneumatic check pipe joint, due to the large amount of dust particles in the air, when the air intake pipe is pulled out from the pneumatic check pipe joint, if the pneumatic check pipe joint is not protected in time, dust particles will often enter the inside of the pneumatic check pipe joint, causing blockage, affecting the problem of difficulty in inserting the air intake pipe when using it next time.

[0004] For this purpose, we propose a pneumatic check pipe joint. Utility Model Content

[0005] The utility model aims to provide a pneumatic check pipe joint to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pneumatic check pipe joint, comprising a joint body, a venting ring is installed on the surface of the joint body, a connecting sleeve is installed on the surface of the connecting sleeve, a limit spring is installed on the surface of the limit spring, an extrusion ring is installed on the surface of the extrusion ring, a sealing ring is installed on the surface of the sealing ring, a valve core body is installed on the surface of the valve core body, a connecting spring is installed on the surface of the connecting spring, an extrusion ring is installed on the surface of the connecting spring, an inner wall of the joint body is slidably connected with an air intake pipe, a protective device is provided on the surface of the venting ring, the protective device comprises a connecting ring, the connecting ring is fixedly connected to the venting ring, a circular groove is provided on the arc surface of the connecting ring, a baffle is slidably connected to the surface of the circular groove, a fixed block is fixedly connected to the surface of the baffle, a sliding rod is fixedly connected to the surface of the fixed block, the circular arc surface of the sliding rod is slidably connected to the limit block, and the limit block is fixedly connected to the circular groove.

[0007] The effect achieved by the above-mentioned components is: by setting up a protective device, utilizing the cooperation between the circular groove on the connecting ring and the baffle, and with the help of the cooperation between the fixing block, the sliding rod and the limit block, it is avoided that dust particles enter the joint body when the joint body is not inserted into the intake pipe, resulting in difficulty in inserting the intake pipe into the joint body when it is needed, thereby improving the cleanliness of the inside of the joint body and further improving the efficiency of inserting the intake pipe into the joint body.

[0008] Preferably, a positioning plate is fixedly connected to the arc surface of the baffle, a screw is threadedly connected to the surface of the connecting ring, and the screw is in contact with the positioning plate.

[0009] The effect achieved by the above components is: the auxiliary block will drive the screw rod to rotate, and at this time the screw rod will tightly abut against the positioning plate with the help of its own thread, and at this time the screw rod can fix the baffle fixedly connected to the fixing plate.

[0010] Preferably, a handle is fixedly connected to one end of the slide rod, and the vertical cross-section of the handle is in the shape of a straight line.

[0011] The effect achieved by the above components is: when the handle is pulled, the handle will drive the slide bar to slide along the surface of the limit block, and at this time the handle can facilitate the staff to pull the slide bar.

[0012] Preferably, an auxiliary block is snap-connected to the surface of the screw rod, and the auxiliary block is an iron block.

[0013] The effect achieved by the above components is: by rotating the auxiliary block, the auxiliary block will drive the screw rod to rotate, and at this time the auxiliary block can facilitate the staff to rotate the screw rod.

[0014] Preferably, an elastic rope is rotatably connected to the surface of the auxiliary block, and the other end of the elastic rope is fixedly connected to the connecting ring.

[0015] The effect achieved by the above components is that the auxiliary block drives one end of the elastic rope to move, and at this time the elastic rope can prevent the auxiliary block from falling off from the screw rod and being lost.

[0016] Preferably, a gasket is fixedly connected to the arc surface of the baffle, and the gasket is a rubber ring.

[0017] The effect achieved by the above components is: the fixed block will drive the baffle to move along the surface of the circular groove, and at the same time the baffle will drive the gasket to move. At this time, the gasket made of rubber material can increase the friction between the circular groove and the baffle, preventing the baffle from shaking due to external force.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model, by providing a protective device, utilizes the cooperation between the circular groove provided on the connecting ring and the baffle plate, and the cooperation between the fixing block, the sliding rod and the limiting block, thereby preventing dust particles from entering the joint body when the joint body is not inserted into the air intake pipe, which causes the air intake pipe to be difficult to insert into the joint body, thereby improving the cleanliness of the interior of the joint body and further improving the efficiency of the air intake pipe being inserted into the joint body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall disassembled structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0022] Figure 3 For this utility model Figure 1 Schematic diagram of the local structure;

[0023] Figure 4 For this utility model Figure 3 Schematic diagram of the local structure;

[0024] Figure 5 For this utility model Figure 4 A schematic diagram of the structure from another angle;

[0025] Figure 6 For this utility model Figure 5 Schematic diagram of the local structure.

[0026] In the figure: 1. Connector body; 2. venting ring; 3. protective device; 301. connecting ring; 302. circular groove; 303. baffle; 304. fixing block; 305. sliding rod; 306. limiting block; 307. positioning plate; 308. handle; 309. screw rod; 310. auxiliary block; 311. elastic rope; 312. gasket; 4. connecting sleeve; 5. limiting spring; 6. extrusion ring; 7. sealing ring; 8. valve core body; 9. connecting spring; 10. extrusion ring; 11. intake pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6The utility model provides a technical solution: a pneumatic check pipe joint, including a joint body 1, a venting ring 2 is installed on the surface of the joint body 1, a connecting sleeve 4 is installed on the surface of the venting ring 2, a limit spring 5 is installed on the surface of the connecting sleeve 4, an extrusion ring 6 is installed on the surface of the limit spring 5, a sealing ring 7 is installed on the surface of the extrusion ring 6, a valve core body 8 is installed on the surface of the valve core body 8, a connecting spring 9 is installed on the surface of the connecting spring 9, an extrusion ring 10 is installed on the surface of the connecting spring 9, an air inlet pipe 11 is slidably connected to the inner wall of the joint body 1, and a protective device 3 is provided on the surface of the venting ring 2.

[0029] The specific setting and function of the protective device 3 will be described in detail below.

[0030] like Figure 3-Figure 6 As shown, the protective device 3 includes a connecting ring 301, the connecting ring 301 is fixedly connected to the deflation ring 2, the arc surface of the connecting ring 301 is provided with a circular groove 302, the surface of the circular groove 302 is slidably connected with a baffle 303, the surface of the baffle 303 is fixedly connected with a fixed block 304, the surface of the fixed block 304 is fixedly connected with a slide rod 305, the arc surface of the slide rod 305 is slidably connected with a limit block 306, the limit block 306 is fixedly connected to the circular groove 302, the arc surface of the baffle 303 is fixedly connected with a positioning plate 307, and the connecting The surface of the ring 301 is threadedly connected with a screw rod 309, which is in contact with the positioning plate 307. The auxiliary block 310 drives the screw rod 309 to rotate. At this time, the screw rod 309 is tightly in contact with the positioning plate 307 by means of its own thread. At this time, the screw rod 309 can fix the baffle 303 fixedly connected to the fixing plate. A handle 308 is fixedly connected to one end of the slide bar 305. The vertical section of the handle 308 is in the shape of a "I". When the handle 308 is pulled, the handle 308 drives the slide bar 305 along the limit block 30 6 is slidable, at this time, the handle 308 can facilitate the staff to pull the slide bar 305, the surface of the screw rod 309 is connected with an auxiliary block 310, the auxiliary block 310 is an iron block, and the auxiliary block 310 is rotated, and the auxiliary block 310 will drive the screw rod 309 to rotate. At this time, the auxiliary block 310 can facilitate the staff to rotate the screw rod 309, and the surface of the auxiliary block 310 is connected with an elastic rope 311, and the other end of the elastic rope 311 is fixedly connected to the connecting ring 301, and the auxiliary block 310 will drive the elastic rope 311 The elastic rope 311 can prevent the auxiliary block 310 from falling off from the screw rod 309 and being lost. The arc surface of the baffle 303 is fixedly connected with a gasket 312, and the gasket 312 is a rubber ring. The fixed block 304 will drive the baffle 303 to move along the surface of the circular groove 302. At the same time, the baffle 303 will drive the gasket 312 to move. At this time, the gasket 312 made of rubber material can increase the friction between the circular groove 302 and the baffle 303, and prevent the baffle 303 from shaking due to the action of external force.

[0031] Working principle: when the air inlet pipe 11 needs to be inserted into the joint body 1, the auxiliary block 310 is first rotated, and the auxiliary block 310 will drive the screw rod 309 to rotate. At this time, the auxiliary block 310 can facilitate the staff to rotate the screw rod 309, and then the screw rod 309 will move in the direction away from the connecting ring 301 with the help of its own thread. At this time, when the screw rod 309 is out of contact with the positioning plate 307, the handle 308 is then pulled in the direction away from the connecting ring 301, and the handle 308 will drive the sliding rod 305 to slide along the surface of the limit block 306. At this time, the handle 308 can facilitate the staff to pull the sliding rod 305, and then the sliding rod 305 will drive the fixed block 304 to move. At this time, the fixed block 304 will bring The movable baffle 303 moves in the same direction along the surface of the circular groove 302, and then when the fixed block 304 reaches the position of the limit block 306, when the air inlet pipe 11 is inserted, the valve core body 8 is pushed open. Because the extrusion ring 10 is sleeved on the valve core body 8, it is separated from the sealing surface and loses the sealing effect. Therefore, the joint body 1 is in a flow state at this time. When the deflation ring 2 is pressed and the air inlet pipe 11 is pulled out, the valve core body 8 is quickly reset under the action of the elastic force of the connecting spring 9, and the extrusion ring 10 is close to the sealing surface. At this time, the extrusion ring 10 plays a sealing role, closes the channel, and prevents the outflow of the fluid. Then, when the air inlet pipe is pulled out from the joint body 1, the handle 308 is pushed in the direction close to the connecting ring 301. At this time, the handle 308 will drive the slide rod 305 to move in. The sliding rod 305 will move, and the sliding rod 305 will drive the fixed block 304 to move, and then the fixed block 304 will drive the baffle 303 to move along the surface of the circular groove 302, and the baffle 303 will drive the gasket 312 to move. At this time, the gasket 312 made of rubber material can increase the friction between the circular groove 302 and the baffle 303 to prevent the baffle 303 from shaking due to external force. Then, when the baffle 303 completely blocks the deflation ring 2, the auxiliary block 310 is engaged with the screw rod 309. At this time, the auxiliary block 310 will drive one end of the elastic rope 311 to move. At this time, the elastic rope 311 can prevent the auxiliary block 310 from falling off from the screw rod 309 and being lost. Then the auxiliary block 310 is rotated, and the auxiliary The block 310 will drive the screw rod 309 to rotate, and at this time the screw rod 309 will tightly abut against the positioning plate 307 with the help of its own thread. At this time, the screw rod 309 can fix the baffle 303 fixedly connected to the fixing plate. By setting the protective device 3, the cooperation between the circular groove 302 opened on the connecting ring 301 and the baffle 303, as well as the cooperation between the fixing block 304 and the sliding rod 305 and the limiting block 306 is avoided. When the joint body 1 is not inserted into the air intake pipe 11, dust particles are prevented from entering the joint body 1, which makes it difficult to insert the air intake pipe 11 into the joint body 1. The cleanliness of the inside of the joint body 1 is improved, and the efficiency of inserting the air intake pipe 11 into the joint body 1 is further improved.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic non-return pipe joint, comprising a joint body (1), characterized in that: The surface of the joint body (1) is provided with a deflation ring (2), the surface of the deflation ring (2) is provided with a connection sleeve (4), the surface of the connection sleeve (4) is provided with a limit spring (5), the surface of the limit spring (5) is provided with an extrusion ring (6), the surface of the extrusion ring (6) is provided with a sealing ring (7), the surface of the sealing ring (7) is provided with a valve core body (8), the surface of the valve core body (8) is provided with a connection spring (9), the surface of the connection spring (9) is provided with an extrusion ring (10), the inner wall of the joint body (1) is slidably connected with an air inlet pipe (11), the deflation ring (2) is provided with a connection spring (11), the connection spring (1 ... A protective device (3) is provided on the surface of the protective device (3), the protective device (3) comprising a connecting ring (301), the connecting ring (301) is fixedly connected to the deflation ring (2), the arc surface of the connecting ring (301) is provided with a circular groove (302), the surface of the circular groove (302) is slidably connected with a baffle (303), the surface of the baffle (303) is fixedly connected with a fixed block (304), the surface of the fixed block (304) is fixedly connected with a sliding rod (305), the arc surface of the sliding rod (305) is slidably connected with a limiting block (306), and the limiting block (306) is fixedly connected to the circular groove (302).

2. A pneumatic non-return pipe joint according to claim 1, characterized in that: The arc surface of the baffle (303) is fixedly connected to a positioning plate (307), and the surface of the connecting ring (301) is threadedly connected to a screw rod (309), and the screw rod (309) is in abutment with the positioning plate (307).

3. A pneumatic non-return pipe joint according to claim 1, characterized in that: One end of the sliding rod (305) is fixedly connected to a handle (308), and the vertical cross-section of the handle (308) is in the shape of a straight line.

4. A pneumatic non-return pipe joint according to claim 2, characterized in that: The surface of the screw rod (309) is snap-connected with an auxiliary block (310), and the auxiliary block (310) is an iron block.

5. A pneumatic non-return pipe joint according to claim 4, characterized in that: An elastic rope (311) is rotatably connected to the surface of the auxiliary block (310), and the other end of the elastic rope (311) is fixedly connected to the connecting ring (301).

6. A pneumatic non-return pipe joint according to claim 1, characterized in that: A gasket (312) is fixedly connected to the arc surface of the baffle (303), and the gasket (312) is a rubber ring.

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