Standard leakage part of inflating valve

Abstract

The utility model relates to the field of inflating valve detection, in particular to an inflating valve standard leakage piece which comprises an inflating valve body, a protective cap is in threaded connection with the body, a gas transmission channel is arranged on the body, a sealing rubber mat is arranged in the gas transmission channel in an inserted mode, and the sealing rubber mat abuts against the side wall of the gas transmission channel. A blocking piece is fixedly arranged in the gas transmission channel, the side, facing the protective cap, of the sealing rubber mat abuts against the blocking piece, the body is placed in the gas tightness detection device to serve as a standard product to be detected, and therefore whether the detection device is damaged or not can be judged conveniently.

Description

Technical Field

[0001] The utility model relates to the field of valve nozzle detection, in particular to a valve nozzle standard missing part. Background Art

[0002] The function of the valve is to inflate and deflate the tire and maintain the seal after the tire is inflated. The valve is generally composed of three main parts: the valve body, the valve core and the valve cap. The outer thread on the existing valve body is relatively long, and its inner thread needs to be locked with the valve core. After the valve is manufactured, it is usually necessary to use airtightness testing equipment to test the airtightness of the valve.

[0003] The common valve air tightness testing equipment now includes an engine body, an inflation pressure head installed on the engine body, and a pressure detector. The valve is placed in the inflation pressure head and inflated. The pressure detector detects the internal pressure of the valve. When the pressure reaches the set value and stabilizes, it indicates that the valve is qualified.

[0004] Regarding the above technical conditions, there is also a problem that during testing, the product is directly placed in the inflation pressure head for testing. When leakage occurs, it is impossible to determine whether it is caused by leakage of the valve mouth air tightness detection device.

[0005] Based on this, the utility model designs a valve nozzle standard missing part to solve the above problems. Utility Model Content

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a standard leaking part of a valve stem, comprising a main body of the valve stem, a protective cap being threadedly connected to the main body, an air supply channel being provided on the main body, a sealing rubber gasket being inserted into the air supply channel, the sealing rubber gasket being pressed against the side wall of the air supply channel, a blocking piece being fixedly provided in the air supply channel, and the sealing rubber gasket being pressed against the blocking piece toward the side of the protective cap.

[0007] By adopting the above technical solution, the sealing gasket blocks and seals the gas transmission channel of the main body. Before testing, the main body is placed in the airtightness testing device as a standard for testing, thereby facilitating the judgment of whether the testing device is damaged.

[0008] Preferably, a sealing gasket is provided in the protective cap, and when the protective cap is arranged on the body, the protective cap presses against the sealing gasket.

[0009] By adopting the above technical solution, the sealing gasket can press against the protective cap tightly, further preventing gas leakage.

[0010] Preferably, a density pad is placed on the main body, and when the protective cap is set on the main body, the density pad presses against the main body.

[0011] By adopting the above technical solution, the encryption pad is pressed against the body, further reducing gas leakage and improving the sealing performance.

[0012] Preferably, a sealing sheet is provided between the sealing pad and the encryption pad.

[0013] By adopting the above technical solution, the sealing sheet further blocks the gas and improves the sealing performance.

[0014] To sum up, the present application has the following beneficial technical effects: the sealing gasket blocks and seals the gas transmission channel of the main body. Before testing, the main body is placed in the airtightness testing device as a standard for testing, thereby facilitating the judgment of whether the testing device is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 Schematic diagram of the overall structure of the body in this embodiment;

[0017] Figure 2 Schematic diagram of the internal structure of the body in this embodiment;

[0018] Figure 3 Schematic diagram of the structure in which the sealing rubber gasket is pressed against the gas transmission channel in this embodiment.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Main body; 2. Protective cap; 3. Gas transmission channel; 4. Sealing pad; 5. Blocking plate; 6. Sealing pad; 7. Encryption pad; 8. Sealing plate. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The following is combined with Figure 1-3 This application is described in further detail.

[0023] A standard leaking part of a valve stem includes a main body 1 of the valve stem, a protective cap 2 is threadedly connected to the main body 1, an air supply channel 3 is provided on the main body 1, a sealing rubber gasket 4 is inserted in the air supply channel 3, the sealing rubber gasket 4 presses against the side wall of the air supply channel 3, a blocking piece 5 is fixedly provided in the air supply channel 3, the blocking piece 5 and the main body 1 are integrally formed, the sealing rubber gasket 4 presses against the blocking piece 5 toward the side of the protective cap 2, and the sealing gasket 6 blocks the air supply channel 3 to prevent gas leakage from the air supply channel 3 during detection.

[0024] The main body 1 is tested for air tightness in advance to ensure that the main body 1 will not leak at the set value; before conducting batch inspections of the valves, in order to test whether the air tightness of the valve air tightness detection device is intact, the main body 1 is placed in the valve air tightness detection device for testing in advance. The appearance of the main body 1 is the same as that of the actual product; the main body 1 is pressurized, and at this time the sealing gasket 4 blocks the gas to prevent the gas from leaking from the gas transmission channel 3. When the valve air tightness detection device detects that the internal pressure of the main body 1 continues to rise until it reaches the set value, it indicates that the valve air tightness detection device is normal; when the valve air tightness detection device detects that the internal pressure of the main body 1 cannot continue to rise and cannot reach the set value, it indicates that there is air leakage in the valve air tightness detection device, which is convenient for judging whether the detection device is damaged.

[0025] In actual testing, the valve mouth air tightness detection device can be tested once every period of time as needed. A sealing gasket 6 is provided in the protective cap 2, and a density pad 7 is placed on the main body 1. A sealing sheet 8 is provided between the sealing gasket 6 and the density pad 7. When the protective cap 2 is set on the main body 1, the sealing gasket 6 and the density pad 7 clamp the sealing sheet 8. At the same time, the protective cap 2 is pressed against the sealing gasket 6, and the density pad 7 is pressed against the main body 1. The sealing gasket 6, the sealing sheet 8 and the density pad 7 further block the gas, thereby further improving the sealing effect.

[0026] The implementation principle of this embodiment is: after the main body 1 is pre-tested to be normal, the main body 1 is placed in the valve mouth air tightness detection device and pressurized. When the valve mouth air tightness detection device detects that the internal pressure of the main body 1 continues to rise until it reaches the set value, it indicates that the valve mouth air tightness detection device is normal; when the valve mouth air tightness detection device detects that the internal pressure of the main body 1 cannot continue to rise and cannot reach the set value, it indicates that there is an air leak in the valve mouth air tightness detection device, thereby facilitating the judgment of whether the detection device is damaged.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A standard missing part of a valve stem, characterized by: The invention comprises a main body (1) of a valve, a protective cap (2) being threadedly connected to the main body (1), an air delivery channel (3) being provided on the main body (1), a sealing rubber pad (4) being inserted in the air delivery channel (3), the sealing rubber pad (4) being pressed against the side wall of the air delivery channel (3), a blocking sheet (5) being fixedly provided in the air delivery channel (3), and the sealing rubber pad (4) being pressed against the blocking sheet (5) on the side facing the protective cap (2).

2. The valve stem standard missing part according to claim 1, characterized in that: A sealing gasket (6) is provided in the protective cap (2); when the protective cap (2) is arranged on the body (1), the protective cap (2) presses against the sealing gasket (6).

3. The valve stem standard missing part according to claim 2, characterized in that: A density pad (7) is placed on the body (1); when the protective cap (2) is arranged on the body (1), the density pad (7) is pressed against the body (1).

4. The valve standard missing part according to claim 3, characterized in that: A sealing sheet (8) is provided between the sealing pad (6) and the encryption pad (7).

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