Air source connector device

Abstract

The utility model provides an air source connector device, and relates to the technical field of pneumatic valves. The gas source pipe sealing device comprises a gas source pipe, a clamping sleeve is sleeved outside the gas source pipe, a gas source ball valve is communicated with the gas source pipe, the clamping sleeve is in threaded connection with the gas source ball valve, one side, far away from the gas source ball valve, of the clamping sleeve is further in threaded connection with a clamping sleeve nut sleeved outside the gas source pipe, and sealing assemblies are respectively arranged between the clamping sleeve and the gas source ball valve and between the clamping sleeve and the clamping sleeve nut. The sealing performance of the gas source pipe is improved, and the anti-stripping capability of the gas source pipe is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic valves, in particular to an air source interface device. Background Art

[0002] The working principle and installation requirements of the air source compression fitting on pneumatic valves involve inserting a polished, pickled stainless steel tube into a compression fitting. The compression nut is then tightened, contacting the fitting and cutting into the tube to create a seal. This eliminates the need for welding when connecting to the steel pipe, facilitating fire and explosion protection, high-altitude operations, and eliminating the drawbacks of careless welding. Therefore, it is a highly advanced connector used in automatic control piping systems in refining, chemical, petroleum, natural gas, food, pharmaceutical, and instrumentation applications.

[0003] At present, the design of pneumatic valves in the device has a single sealing structure and the sealing performance needs to be improved. The air source is prone to leakage, which affects the normal operation of the pneumatic valve. Especially in complex working environments, under the influence of unforeseen external forces such as object collisions and people stepping on them, the air source pipe is very likely to fall off, causing the pneumatic valve to lose control and suddenly fully open or fully close. Such sudden changes often have a great impact on production, which may lead to a reduction in production at the least, and may trigger a chain reaction at worst, causing equipment damage or even accidents. Utility Model Content

[0004] The purpose of the utility model is to develop a gas source interface device with improved sealing performance and enhanced anti-detachment capability of the gas source pipe.

[0005] The utility model is achieved through the following technical solutions:

[0006] A gas source interface device, comprising:

[0007] Gas source pipe;

[0008] The ferrule is mounted on the outside of the gas source pipe;

[0009] Gas source ball valve, connected to the gas source pipe;

[0010] Among them, the ferrule is threadedly connected to the air source ball valve, and the side of the ferrule away from the air source ball valve is also threadedly connected to a ferrule nut sleeved outside the air source pipe, and sealing components are respectively provided between the ferrule and the air source ball valve and the ferrule nut.

[0011] Optionally, the air source ball valve has a port at one end close to the ferrule, the inner diameter of the port is adapted to the outer diameter of the air source pipe, the air source pipe is inserted into the port, and the port is threadedly connected to the ferrule.

[0012] Optionally, a first internal thread is provided on the inner wall of the end of the ferrule close to the air source ball valve. Except for the first internal thread portion having an inner diameter larger than the air source pipe, the inner diameter of the remaining portion of the ferrule is adapted to the outer diameter of the air source pipe. A first external thread that cooperates with the first internal thread is provided on the port of the air source ball valve.

[0013] Optionally, a first double-ferrule stainless steel sealing expansion ring is provided between the port of the air source ball valve and the ferrule as a sealing component.

[0014] Optionally, the outer wall of the ferrule near one end of the ferrule nut is provided with a second external thread, and the inner wall of the ferrule nut near one end of the ferrule is provided with a second internal thread that cooperates with the second external thread.

[0015] Optionally, a second double-ferrule stainless steel sealing expansion ring is provided between the ferrule nut and the ferrule as a sealing component.

[0016] Optionally, a screw hole is provided on the outer wall of the ferrule along its radial direction, and the inner thread of the screw hole is connected to a top screw that cooperates with the air source pipe.

[0017] The beneficial effects of the utility model are:

[0018] The ferrule provided in the utility model protects the connection between the air source pipe and the air source ball valve, and sealing components are provided between the ferrule, the air source ball valve and the ferrule nut. Through the two seals, the sealing performance is enhanced and the anti-separation ability of the air source pipe is enhanced. In addition, the utility model has a simple structure, is easy to disassemble and assemble, and is convenient for daily maintenance and overhaul. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is the structural diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the utility model from another perspective.

[0022] Figure numerals: 1, air source ball valve; 11, first external thread; 2, ferrule; 21, screw hole; 22, top screw; 23, second external thread; 24, first internal thread; 3, air source pipe; 4, ferrule nut; 41, second internal thread; 5, first double-ferrule stainless steel sealing expansion ring; 6, second double-ferrule stainless steel sealing expansion ring. DETAILED DESCRIPTION

[0023] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the utility model discloses an air source interface device, comprising an air source pipe 3 and an air source ball valve 1. A ferrule 2 is sleeved on the air source pipe 3, and the ferrule 2 is threadedly connected to the air source ball valve 1.

[0027] The ferrule 2 is cylindrical, with a first internal thread 24 on the inner wall of one end and a second external thread 23 on the outer wall of the other end. Except for the portion with the first internal thread 24, where the inner diameter of the ferrule 2 is larger than that of the gas supply tube 3, the inner diameter of the remaining portion of the ferrule 2 matches the outer diameter of the gas supply tube 3. A threaded hole 21 is provided radially along the outer wall of the ferrule 2. A set screw 22, which mates with the gas supply tube 3, is connected to the inner thread of the threaded hole 21.

[0028] The air source ball valve 1 has a port, the inner diameter of the port is adapted to the outer diameter of the air source pipe 3, the air source pipe 3 is inserted into the port, and the port is provided with a first external thread 11 that cooperates with the first internal thread 24. The port of the air source ball valve 1 and the ferrule 2 are threadedly connected through the thread cooperation of the first internal thread 24 and the first external thread 11. A first double-ferrule stainless steel sealing expansion ring 5 is provided between the port and the ferrule 2 as the first seal between the air source pipe 3 and the air source valve.

[0029] A ferrule nut 4 is provided on the side of the ferrule 2 away from the air source ball valve 1. The ferrule nut 4 has a second internal thread 41 that cooperates with the second external thread 23. The ferrule nut 4 is sleeved on the outside of the air source pipe 3. A second double-ferrule stainless steel sealing expansion ring 6 is provided between the ferrule nut 4 and the ferrule 2 as the second seal between the air source pipe 3 and the air source valve.

[0030] The ferrule 2 provided in the utility model protects the connection between the air source pipe 3 and the air source ball valve 1, and a sealing component is provided between the ferrule 2 and the air source ball valve 1 and the ferrule nut 4. Through the two seals, the sealing performance is enhanced, and the anti-separation ability of the air source pipe 3 is enhanced. In addition, the utility model has a simple structure, is easy to disassemble and assemble, and is convenient for daily maintenance and overhaul.

[0031] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A gas source interface device, characterized in that: include: Gas source pipe; The ferrule is mounted on the outside of the gas source pipe; Gas source ball valve, connected to the gas source pipe; Among them, the ferrule is threadedly connected to the air source ball valve, and the side of the ferrule away from the air source ball valve is also threadedly connected to a ferrule nut sleeved outside the air source pipe, and sealing components are respectively provided between the ferrule and the air source ball valve and the ferrule nut.

2. The air source interface device according to claim 1, characterized in that: The air source ball valve has a port at one end close to the ferrule, the inner diameter of the port is adapted to the outer diameter of the air source pipe, the air source pipe is inserted into the port, and the port is threadedly connected to the ferrule.

3. The air source interface device according to claim 2, characterized in that: The inner wall of the end of the ferrule close to the air source ball valve is provided with a first internal thread. Except that the inner diameter of the first internal thread part of the ferrule is larger than the air source pipe, the inner diameter of the remaining part of the ferrule is adapted to the outer diameter of the air source pipe. The port of the air source ball valve is provided with a first external thread that cooperates with the first internal thread.

4. The air source interface device according to claim 3, characterized in that: A first double-sleeve stainless steel sealing expansion ring is provided between the port of the air source ball valve and the ferrule as a sealing component.

5. The air source interface device according to claim 1, characterized in that: The outer wall of the ferrule close to one end of the ferrule nut is provided with a second external thread, and the inner wall of the ferrule nut close to one end of the ferrule is provided with a second internal thread that matches the second external thread.

6. The air source interface device according to claim 5, characterized in that: A second double-ferrule stainless steel sealing expansion ring is provided between the ferrule nut and the ferrule as a sealing component.

7. The air source interface device according to any one of claims 1 to 6, characterized in that: The outer wall of the ferrule is provided with a screw hole opened along its radial direction, and the inner thread of the screw hole is connected with a top screw that matches the air source pipe.

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