Quick-change connector body with high-voltage plugging function

Abstract

The invention provides a quick-change connector body with a high-pressure plugging function, and relates to the technical field of pipelines, the quick-change connector body comprises a male plug and a female socket, the side face of the male plug is provided with a male head, the inner surface of the male plug is provided with a sleeve, one end of the sleeve is provided with a one-way valve element, the inner surface of the male plug is fixedly provided with a valve seat, and the female socket comprises a rear valve body. A front valve body is fixedly installed on the side face of the rear valve body, a needle valve is fixedly installed on the inner surface of the rear valve body, a locking sleeve is arranged on the outer side of the front valve body, the connector can be used for the high-pressure field, the maximum working pressure in the on state is 300 Bar, the maximum working pressure in the off state is 600 Bar, and after the connector is disconnected, a male connector side valve element can be automatically closed to prevent medium leakage. After the connector is connected, the valve is automatically opened, medium circulation is always reliably kept within a rated working range, and the connector can combine the male plug and the female socket together through a ball lock mechanism, so that the male plug and the female socket can be plugged and unplugged under high pressure, and quick replacement of the connector is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pipelines, in particular to a quick-change joint body with high-pressure plug-in and pull-out. Background Art

[0002] Pneumatic quick-change connectors are essential connecting parts for quick connection in pipeline systems and are widely used in pipeline systems with oil and gas as the medium, such as hydraulic valve stations, high-pressure nitrogen springs, and various machine assembly and machine processing pipeline systems. At present, most of the quick-change connectors on the market cannot be plugged in or out under high pressure, and people need to close the medium in the pipeline system before they can be plugged in or out, which needs to be improved. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problems raised in the above background technology.

[0004] The present invention adopts the following technical scheme: a quick-change connector body with high-pressure plug-in and pull-out, comprising a male plug and a female socket, a male head is arranged on the side of the male plug, a sleeve is arranged on the inner surface of the male plug, a one-way valve core is arranged at one end of the sleeve, a valve seat is fixedly installed on the inner surface of the male plug, the female socket comprises a rear valve body, a front valve body is fixedly installed on the side of the rear valve body, a needle valve is fixedly installed on the inner surface of the rear valve body, a locking sleeve is arranged on the outer side of the front valve body, a loose sleeve is arranged on the outer surface of the needle valve, a steel ball is arranged on the inner surface of the front valve body, and a U-shaped groove is arranged on the outer surface of the male head.

[0005] Preferably, the inner surface of the sleeve is fixedly connected with a spring a, and the inner surface of the male plug is located outside the sleeve and fixed with a spring b. Here, the one-way valve core can push the sleeve under the action of the spring b.

[0006] Preferably, a spring c is provided between the locking sleeve and the front valve body, and a spring d is fixedly connected to the inner surface of the front valve body. Here, the release sleeve shell pops out under the action of the spring d.

[0007] Preferably, a PTFE pad is fixedly mounted on the outer surface of the one-way valve core, and an O-ring is fixedly mounted on the side of the PTFE pad. Here, a PTFE pad and an O-ring can be added to the male plug and the female socket to improve the sealing of the joint.

[0008] Preferably, the U-shaped groove fits the steel ball. Here, the steel ball can enter the U-shaped groove.

[0009] Preferably, the maximum working pressure of the male plug and the female socket when connected is 300 Bar, and the maximum working pressure when disconnected is 600 Bar. Here, 300 Bar is used as the maximum working pressure of the connector when connected, and 600 Bar is used as the maximum pressure of the connector when disconnected.

[0010] Compared with the prior art, the advantages and positive effects of the present invention are:

[0011] In the present invention, the connector can be used in high-pressure fields. The maximum working pressure in the connected state is 300 Bar, and the maximum working pressure in the disconnected state is 600 Bar. When the connector is disconnected, the valve core on the male side can be automatically closed to prevent medium leakage. After the connector is connected, the valve automatically opens to reliably maintain the flow of the medium within the rated working range. The connector can use a ball lock mechanism to combine the male plug and the female socket together, so that it can be plugged in and out under high pressure to achieve quick replacement of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a quick-change connector body with high-voltage plug-in and pull-out is provided for the present invention;

[0013] Figure 2 The present invention provides a schematic structural diagram of a male plug in a quick-change connector body with high-voltage plugging and unplugging;

[0014] Figure 3 The present invention provides a structural schematic diagram of a female socket in a quick-change connector body with high-voltage plugging and unplugging.

[0015] Legend:

[0016] 1. Male plug; 2. Female socket; 3. Male head; 4. Check valve core; 5. Valve seat; 6. Sleeve; 7. Spring a; 8. Spring b; 9. Rear valve body; 10. Front valve body; 11. Needle valve; 12. Locking sleeve; 13. Loose sleeve; 14. Steel ball; 15. Spring c; 16. Spring d; 17. PTFE pad; 18. O-ring; 19. U-shaped groove. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Embodiment 1

[0020] See also Figure 1-3The present invention provides a technical solution: a quick-change connector body with high-pressure plug-in and pull-out, comprising a male plug 1 and a female socket 2, a male head 3 is arranged on the side of the male plug 1, a sleeve 6 is arranged on the inner surface of the male plug 1, a one-way valve core 4 is arranged at one end of the sleeve 6, a valve seat 5 is fixedly installed on the inner surface of the male plug 1, the female socket 2 comprises a rear valve body 9, a front valve body 10 is fixedly installed on the side of the rear valve body 9, a needle valve 11 is fixedly installed on the inner surface of the rear valve body 9, the needle valve 11 can press the one-way valve core 4, a locking sleeve 12 is arranged on the outer side of the front valve body 10, the locking sleeve 12 can move forward under the action of a spring d16, a loosening sleeve 13 is sleeved on the outer surface of the needle valve 11, a steel ball 14 is arranged on the inner surface of the front valve body 10, and a U-shaped groove 19 is arranged on the outer surface of the male head 3.

[0021] See also Figure 1-3 , the inner surface of the sleeve 6 is fixedly connected with a spring a7, the inner surface of the male plug 1 is located on the outside of the sleeve 6 and is fixedly installed with a spring b8, when the needle valve 11 presses the one-way valve core 4, the spring a7 and the spring b8 are compressed, a spring c15 is arranged between the locking sleeve 12 and the front valve body 10, the inner surface of the front valve body 10 is fixedly connected with a spring d16, the outer surface of the one-way valve core 4 is fixedly installed with a polytetrafluoroethylene pad 17, and the side of the polytetrafluoroethylene pad 17 is fixedly installed with an O-ring 18, the polytetrafluoroethylene pad 17 and the O-ring 18 are used to improve the sealing performance, the U-shaped groove 19 fits with the steel ball 14, the maximum working pressure when the male plug 1 and the female socket 2 are connected is 300Bar, and the maximum working pressure when the disconnected state is 600Bar.

[0022] Working principle: When the quick-change connector is in the connected state: press the locking sleeve 12, the spring c15 is compressed, the male plug 1 is inserted into the front valve body 10, the locking sleeve 12 is released, the male head 3 pushes the loosening sleeve 13, and the locking sleeve 12 moves forward under the action of the spring d16, pushing the steel ball 14 to pop out and press into the U-shaped groove 19 of the male head 3, reliably connecting the male plug 1 and the female socket 2 together, at the same time, the needle valve 11 presses the check valve core 4, the spring a7 and the spring b8 are compressed, so that the check valve core 4 is separated from the valve seat 5, and the medium is connected to the internal channel of the male plug 1 through the needle valve 11 channel When the quick-change connector is in the loose state, the locking sleeve 12 is pressed, the spring c15 is compressed, the loose sleeve 13 is ejected under the action of the spring d16, and the steel ball 14 is squeezed out of the U-shaped groove 19 of the male head 3. The male plug 1 is automatically separated from the female socket 2. The one-way valve core 4 in the male plug 1 pushes the sleeve 6 under the action of the spring b8, and the spring a7 is compressed, so that the one-way valve core 4 is pressed against the conical surface of the valve seat 5. The internal channel of the male plug 1 is closed, so that the medium (oil or gas) in the connected system is sealed and cannot overflow.

[0023] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A quick-change connector body with high-voltage plug-in and pull-out function, comprising a male plug (1) and a female socket (2), characterized in that: The side of the male plug (1) is provided with a male head (3), the inner surface of the male plug (1) is provided with a sleeve (6), one end of the sleeve (6) is provided with a one-way valve core (4), the inner surface of the male plug (1) is fixedly provided with a valve seat (5), the female socket (2) comprises a rear valve body (9), the side of the rear valve body (9) is fixedly provided with a front valve body (10), the inner surface of the rear valve body (9) is fixedly provided with a needle valve (11), the outer side of the front valve body (10) is provided with a locking sleeve (12), the outer surface of the needle valve (11) is provided with a loosening sleeve (13), the inner surface of the front valve body (10) is provided with a steel ball (14), and the outer surface of the male head (3) is provided with a U-shaped groove (19).

2. The quick-change connector with high-voltage plug-in function according to claim 1, characterized in that: The inner surface of the sleeve (6) is fixedly connected with a spring a (7), and the inner surface of the male plug (1) is located outside the sleeve (6) and is fixedly mounted with a spring b (8).

3. The quick-change connector with high-voltage plug-in function according to claim 1, characterized in that: A spring c (15) is provided between the locking sleeve (12) and the front valve body (10), and a spring d (16) is fixedly connected to the inner surface of the front valve body (10).

4. The quick-change connector with high-voltage plug-in function according to claim 1, characterized in that: A polytetrafluoroethylene pad (17) is fixedly mounted on the outer surface of the one-way valve core (4), and an O-ring (18) is fixedly mounted on the side of the polytetrafluoroethylene pad (17).

5. The quick-change connector with high-voltage plug-in function according to claim 1, characterized in that: The U-shaped groove (19) is fitted with the steel ball (14).

6. The quick-change connector with high-voltage plug-in function according to claim 1, characterized in that: When the male plug (1) and the female socket (2) are in the connected state, the maximum working pressure is 300 Bar, and when they are in the disconnected state, the maximum working pressure is 600 Bar.

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