Inflating valve nut structure with high sealing performance

Abstract

The utility model relates to the technical field of machinery, in particular to an inflating valve nut structure with high sealing performance. The sealing nut comprises a nut body, a sealing ring groove is formed in the surface of the nut body, an external thread part is arranged on the surface of the nut body, and an elastic sealing washer is installed on the inner wall of the sealing ring groove. The problems that a traditional inflating valve nut structure has certain defects in the aspect of sealing performance, as time goes on and is affected by external environment factors such as vibration, temperature change and humidity, the air leakage phenomenon is prone to occurring, the tire pressure is insufficient, the safety and stability of equipment are affected, the maintenance cost and the use risk are increased, and the service life of the equipment is affected are solved. The elastic sealing washer is made of rubber and other materials with good elasticity and sealing performance, when the nut body is screwed on the inflating valve, the elastic sealing washer is extruded to deform and is tightly attached to the gap between the inflating valve and the nut body, and the problem of gas leakage is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical technical field especially relates to a high sealing air valve nut structure. BACKGROUND

[0002] In various mechanical equipment and vehicle and other devices, air valve is used for the inflation and deflation of components such as tires. And the air valve nut is a key component for fixing the air valve and ensuring the air valve sealing performance, and its performance directly affects the normal operation of the equipment.

[0003] The traditional air valve nut structure has certain deficiencies in sealing, and with the passage of time and the influence of external environmental factors, such as vibration, temperature change, humidity, etc., air leakage phenomenon is prone to occur, which leads to insufficient tire pressure, affects the safety and stability of the equipment, increases the maintenance cost and use risk; Therefore, in view of the above problems, a kind of high sealing air valve nut structure is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems of the traditional air valve nut structure in the prior art, which has certain deficiencies in sealing, and with the passage of time and the influence of external environmental factors, air leakage phenomenon is prone to occur, and proposes a kind of high sealing air valve nut structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of high sealing air valve nut structure, including nut body, the surface of the nut body is provided with sealing ring groove, the surface of the nut body is provided with outer thread part, the inner wall of the sealing ring groove is installed with elastic sealing washer.

[0006] The effect of the above components is that the elastic sealing washer is made of rubber and other materials with good elasticity and sealing performance, when the nut body is screwed on the air valve, the elastic sealing washer is extruded and deformed, tightly fits in the gap between the air valve and the nut body, effectively prevents gas leakage.

[0007] Preferably, the surface of the nut body is fixedly connected with a hexagonal operating part, and the size of the hexagonal operating part meets the operating requirements of standard tools.

[0008] The effect of the above components is that it is convenient to use wrench and other tools to tighten and disassemble the nut.

[0009] Preferably, the material of the nut body is carbon steel, and the surface is treated by galvanizing.

[0010] The zinc layer formed after the galvanization treatment can effectively prevent the steel base body from contacting air, moisture and the like, and has good corrosion prevention effect, and is commonly used for the valve nozzle nut of mechanical equipment which is sensitive to cost and has relatively less harsh working environment.

[0011] Preferably, the nut body is provided with a guide chamfer at one end close to the sealing groove.

[0012] The guide chamfer can guide the nut during the screwing process, so that the nut is more easily and accurately screwed on the valve nozzle, and damage to the elastic sealing gasket is reduced, and installation efficiency and sealing reliability are improved.

[0013] Preferably, the surface of the nut body is covered with a protective layer, and the material of the protective layer is polyurethane material.

[0014] The protective layer can effectively resist the erosion of dust, moisture, chemicals and the like from the outside to the nut body, prevent the nut from rusting and wearing, and ensure that the valve nozzle nut can still have good performance in harsh environments.

[0015] Preferably, the surface of the nut body is provided with a nickel plating layer.

[0016] The nickel plating layer has good corrosion resistance, can effectively prevent the nut body from being eroded by humid air, rainwater and the like, and has high hardness, so as to improve the wear resistance of the surface of the nut and increase the service life of the nut.

[0017] Preferably, the surface of the nickel plating layer is subjected to phosphating treatment to form an inorganic phosphating coating.

[0018] The phosphating coating has good adsorption, can enhance the bonding force between the subsequent protective layer and the nut body, and also has certain rust prevention and wear resistance, and further improves the comprehensive protection capability of the nut.

[0019] In summary, the beneficial effects of the utility model are as follows:

[0020] 1. In the utility model, the elastic sealing gasket is deformed by being extruded when the nut body is screwed on the valve nozzle, and is tightly fitted at the gap between the valve nozzle and the nut body, so as to effectively prevent gas leakage. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the three-dimensional structure of the utility model;

[0022] Figure 2Another angle structure schematic view of the utility model;

[0023] Figure 3 The utility model discloses a nut body's sectional view in it;

[0024] Figure 4 The utility model discloses a structure schematic view of elastic sealing washer in it;

[0025] Figure 5 The utility model discloses a structure schematic view of nut body in it.

[0026] Legend explains: 1, nut body, 2, outer thread part, 3, sealing ring groove, 4, threaded rod, 5, hexagonal operation part, 6, elastic sealing washer, 7, guide chamfer, 8, nickel plating layer, 9, phosphating coating, 10, protective layer. DETAILED DESCRIPTION

[0027] Refer to Figures 1-4The utility model provides a technical scheme: a valve nozzle nut structure of high sealing performance, including nut body 1, the surface of nut body 1 is equipped with sealing ring groove 3, the surface of nut body 1 is equipped with outer thread part 2, the inner wall of sealing ring groove 3 is installed with elastic sealing washer 6. Elastic sealing washer 6 is made of rubber and the like material with good elasticity and sealing performance, when nut body 1 is screwed on the valve nozzle, elastic sealing washer 6 is extruded and deformed, is tightly attached at the gap between valve nozzle and nut body 1, effectively prevents gas leakage, the surface of nut body 1 is fixedly connected with hexagonal operation part 5, and the size of hexagonal operation part 5 meets the operation requirement of standard tool. In order to facilitate the use of wrench and the like tool to tighten and dismount the nut, the material of nut body 1 is carbon steel material, and the surface is subjected to galvanizing treatment. The zinc layer formed after galvanizing treatment can effectively prevent the steel matrix from contacting air, moisture and the like, and has good anticorrosion effect, is commonly used for the valve nozzle nut of some cost-sensitive and relatively not too harsh working environment mechanical equipment, the end of nut body 1 close to sealing groove is equipped with guide chamfer 7. Guide chamfer 7 can play a guiding role during nut tightening, so that the nut is more easily and accurately screwed on the valve nozzle, and the damage to elastic sealing washer 6 is also reduced, and the installation efficiency and sealing reliability are improved, the surface of nut body 1 is covered with a protective layer 10, and the material of the protective layer 10 is polyurethane material. The protective layer 10 can effectively resist the erosion of dust, moisture, chemicals and the like from the outside to the nut body, prevent the nut from rusting and wearing, and ensure that the valve nozzle nut can still maintain good performance in harsh environments, the surface of nut body 1 is provided with a nickel plating layer 8. The nickel plating layer 8 has good corrosion resistance, can effectively prevent the nut body from being eroded by humid air, rainwater and the like, and has high hardness, can improve the wear resistance of the surface of the nut, increase the service life of the nut, the surface of the nickel plating layer 8 is subjected to phosphating treatment to form an inorganic phosphating coating 9. The phosphating coating 9 has good adsorbability, can enhance the bonding force between the subsequent protective layer 10 and the nut body, also has certain rust-proof and wear-resistant properties, and further improves the comprehensive protection capability of the nut.

[0028] Working principle, first, the elastic sealing washer 6 is installed in the annular sealing groove of the nut body 1, ensure that the elastic sealing washer 6 is installed firmly and accurately in position. Then, the nut body 1 with elastic sealing washer 6 is aligned with the valve nozzle, through the guidance of the guide chamfer 7, start to tighten the nut body 1. During the tightening process, the operator can increase the friction force through the anti-skid pattern on the outer surface of the nut body 1, firmly screw the nut body 1 on the valve nozzle, until the elastic sealing washer 6 is fully extruded, tightly fit in the gap between the valve nozzle and the nut body 1, complete the installation, the surface of the nut body 1 is covered with a protective layer 10, the material of the protective layer 10 is polyurethane material. The protective layer 10 can effectively resist the erosion of dust, moisture, chemicals and other external factors on the nut body, prevent the nut from rusting and wearing, ensure that the valve nut can still maintain good performance in harsh environment, the surface of the nut body 1 is provided with a nickel plating layer 8. The nickel plating layer 8 has good corrosion resistance, can effectively prevent the nut body from being eroded by humid air, rainwater and the like, and the nickel plating layer 8 has high hardness, can improve the wear resistance of the surface of the nut, increase the service life of the nut, the surface of the nickel plating layer 8 is treated with phosphating to form an inorganic phosphating coating 9. The phosphating coating 9 has good adsorbability, can enhance the bonding force between the subsequent protective layer 10 and the nut body, and also has certain rust prevention and wear resistance, further improves the comprehensive protection ability of the nut.

[0029] In the description of the utility model, it is need to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be two element inside communication. For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

Claims

1. A valve stem nut structure with high sealing performance, comprising a nut body (1), characterized in that: The surface of the nut body (1) is provided with a sealing ring groove (3), the surface of the nut body (1) is provided with an external thread (2), and an elastic sealing washer (6) is installed on the inner wall of the sealing ring groove (3).

2. The valve stem nut structure with high sealing performance according to claim 1, characterized in that: The surface of the nut body (1) is fixedly connected to a hexagonal operating part (5), and the size of the hexagonal operating part (5) meets the operating requirements of a standard tool.

3. The high-sealing valve nut structure according to claim 1, characterized in that: The nut body (1) is made of carbon steel and its surface is galvanized.

4. The valve stem nut structure with high sealing performance according to claim 1, characterized in that: The nut body (1) has a guide chamfer (7) at one end near the sealing groove.

5. The high-sealing valve nut structure according to claim 1, characterized in that: The surface of the nut body (1) is covered with a protective layer (10), and the protective layer (10) is made of polyurethane material.

6. The valve stem nut structure with high sealing performance according to claim 1, characterized in that: The surface of the nut body (1) is provided with a nickel plating layer (8).

7. The valve stem nut structure with high sealing performance according to claim 6, characterized in that: The surface of the nickel plating layer (8) is treated with phosphating to form an inorganic phosphating coating (9).

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