Connecting and fixing structure of air valve

Abstract

The utility model discloses a connecting and fixing structure of an air valve, which comprises a valve seat, a valve cover is assembled at the top of the valve seat, a valve core is assembled between the valve seat and the valve cover, a connecting piece is assembled at the center of the valve cover and the valve seat, the connecting piece comprises a connecting rod, and the top of the connecting rod is fixedly connected with a connecting screw block. A first connecting part and a second connecting part are integrally formed on the side wall of the connecting rod. Through cooperation of the first connecting part and the second connecting part, connection and fixation between the valve seat and the valve deck are completed, operation is easy and convenient, and meanwhile the connecting positions of the connecting frame, the valve seat and the valve deck can be sealed through the sealing rings arranged in the first connecting part and the second connecting part. When the product is used for fixing the valve seat and the valve cover, the operation is simpler and quicker, the overall air tightness of the product is improved, and the air leakage condition is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas valves, in particular to a connection and fixing structure of gas valves. Background Art

[0002] The gas valve is an important component used to control the gas inhalation and discharge from the cylinder in the compressor. The gas valve is usually composed of a valve seat, a valve core, and a valve cover that are fixed and assembled in sequence. The existing gas valve assembly and fixation are as follows: Figure 3 As shown in , most of them use the combination of studs and nuts for connection and fixation. With this traditional fixing method, it is necessary to first connect and position the stud and the valve seat through the positioning pin, and then screw the nut on the top of the stud to complete the assembly and fixation between the valve cover and the valve seat. The above fixing method is not only cumbersome to operate, but also there is a certain gap at the connection between the thread opened on the side wall of the stud and the valve cover after the fixation is completed. During use, gas is easy to leak from the connection, thereby affecting the overall quality of the product. To this end, we propose a connection and fixing structure for the gas valve. Utility Model Content

[0003] The purpose of the utility model is to provide a connection and fixing structure of a gas valve to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connecting and fixing structure of an air valve, comprising a valve seat, a valve cover is assembled on the top of the valve seat, a valve core is assembled between the valve seat and the valve cover, a connecting piece is assembled at the center of the valve cover and the valve seat, the connecting piece comprises a connecting rod, a connecting screw block is fixedly connected to the top of the connecting rod, and the side walls of the connecting rod are respectively integrally formed with a first connecting part and a second connecting part.

[0005] Preferably, the first connecting part is located in the valve cover, the second connecting part is located in the valve seat, the side walls of the first connecting part and the second connecting part are respectively provided with connecting threads, and the first connecting part and the second connecting part are respectively connected and fixed to the valve cover and the valve seat through the connecting threads.

[0006] Preferably, a first sealing groove is formed on the side wall of the first connecting portion, and a second sealing groove is formed on the side wall of the second connecting portion, and sealing rings are installed in both the first sealing groove and the second sealing groove.

[0007] Preferably, a sealing gasket is installed between the connecting screw block and the valve cover.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: a connection and fixing structure of a gas valve is provided, and the valve seat and the valve cover of the gas valve are fixedly connected by the connection piece instead of the traditional stud and nut matching method, and the first connection part and the second connection part are provided in the connection piece, and the connection and fixing between the valve seat and the valve cover are completed by the matching of the first connection part and the second connection part, and the operation is simple and convenient. At the same time, the connection between the connecting frame, the valve seat and the valve cover can be sealed by the sealing ring provided in the first connection part and the second connection part. When using this product to fix the valve seat and the valve cover, not only the operation is simpler and faster, but also the overall air tightness of the product is improved, and the occurrence of air leakage is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a three-dimensional diagram of the connecting piece of the utility model.

[0011] Figure 3 It is a schematic diagram of the structure in which a gas valve is fixed by a stud and a nut in the prior art.

[0012] In the figure: 1. Connecting piece, 1-1. Connecting rod, 1-2. Connecting screw block, 1-3. First connecting part, 1-4. Second connecting part, 1-5. Connecting thread, 1-6. First sealing groove, 1-7. Second sealing groove, 1-8. Sealing ring, 2. Valve seat, 3. Valve cover, 4. Valve core, 5. Sealing gasket. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a technical solution: a connection and fixing structure of a gas valve, a connecting piece is assembled at the center of a valve seat 2 and a valve cover 3 of the gas valve, the valve seat 2 and the valve cover 3 are connected and fixed by a connecting piece 1, a valve core 4 is assembled between the valve seat 2 and the valve cover 3, and the valve seat 2 and the valve cover 3 are connected and fixed by a connecting frame 1, and then the valve core 4 is clamped and fixed.

[0015] The connecting piece 1 includes a connecting rod 1-1, a connecting screw block 1-2 is integrally formed on the top of the connecting rod 1-1, a first connecting part 1-3 and a second connecting part 1-4 are integrally formed on the side wall of the connecting rod 1-1, connecting threads 1-5 are respectively provided on the side walls of the first connecting part 1-3 and the second connecting part 1-4, and thread grooves matching the sizes of the connecting threads 1-5 are respectively provided at the centers of the valve seat 2 and the valve cover 3. After the connecting rod 1-1 is inserted into the middle of the valve seat 2 and the valve cover 3, the valve cover 3 and the valve seat 2 are fixed in position by the first connecting part 1-3 and the second connecting part 1-4 respectively.

[0016] like Figure 1 As shown in the figure, the side walls of the first connecting part 1-3 and the second connecting part 1-4 are respectively provided with a first sealing groove 1-6 and a second sealing groove 1-7, and sealing rings 1-8 matching their sizes are respectively installed in the first sealing groove 1-6 and the second sealing groove 1-7, and the connections between the first connecting part 1-3, the valve seat 2, the second connecting part 1-4, and the valve cover 3 are respectively sealed by the provided sealing rings 1-8, thereby improving the air tightness between the connecting rod 1-1 and the valve seat 2 and the valve cover 3.

[0017] A sealing gasket 5 is installed between the connecting screw block 1-2 and the valve cover 3. The sealing gasket 5 is annular. After the connecting piece 1 is connected and fixed with the valve seat 2 and the valve cover 3, the sealing gasket 5 further increases the air tightness between the connecting piece 1 and the valve cover 3 to avoid gas leakage at the connection between the connecting piece 1 and the valve cover 3.

[0018] Working principle: Figure 1 As shown in the figure, during use, the connecting piece 1 is inserted into the center of the valve seat 2 and the valve cover 3. After the connecting piece 1 is screwed, the second connecting part 1-4 is connected and fixed to the valve seat 2, and the first connecting part 1-3 is connected and fixed to the valve cover 3, thereby ensuring the stability of the fixed position of the valve seat 2 and the valve cover 3, and by arranging a sealing ring 1-8 above the connecting thread 1-5 in the first connecting part 1-3 and the second connecting part 1-4, the air tightness of the first connecting part 1-3 and the second connecting part 1-4 connected to the valve cover 3 and the valve seat 2 respectively is improved, and at the same time, by assembling a sealing gasket 5 between the connecting screw block 1-2 and the valve cover 3, the air tightness between the connecting frame 1 and the valve cover 3 is further improved, thereby improving the sealing effect of this product during use.

Claims

1. A connecting and fixing structure of a gas valve, comprising a valve seat (2), a valve cover (3) being mounted on the top of the valve seat (2), and a valve core (4) being mounted between the valve seat (2) and the valve cover (3), characterized in that: A connecting piece (1) is assembled at the center of the valve cover (3) and the valve seat (2), and the connecting piece (1) comprises a connecting rod (1-1), a connecting screw block (1-2) is fixedly connected to the top of the connecting rod (1-1), and a first connecting part (1-3) and a second connecting part (1-4) are respectively integrally formed on the side walls of the connecting rod (1-1).

2. The connecting and fixing structure of a gas valve according to claim 1, characterized in that: The first connecting portion (1-3) is located in the valve cover (3), and the second connecting portion (1-4) is located in the valve seat (2). The side walls of the first connecting portion (1-3) and the second connecting portion (1-4) are respectively provided with connecting threads (1-5). The first connecting portion (1-3) and the second connecting portion (1-4) are respectively connected and fixed to the valve cover (3) and the valve seat (2) via the connecting threads (1-5).

3. The connecting and fixing structure of a gas valve according to claim 1, characterized in that: A first sealing groove (1-6) is provided on the side wall of the first connecting portion (1-3), a second sealing groove (1-7) is provided on the side wall of the second connecting portion (1-4), and sealing rings (1-8) are installed in both the first sealing groove (1-6) and the second sealing groove (1-7).

4. The connecting and fixing structure of a gas valve according to claim 1, characterized in that: A sealing gasket (5) is installed between the connecting screw block (1-2) and the valve cover (3).

Images