Inflating valve with multiple sealing mechanisms

Abstract

The utility model relates to the field of inflating valves, and discloses an inflating valve with a multi-sealing mechanism, which comprises a valve pipe, a connector is in threaded connection with the inner wall of the valve pipe, a connecting pipe is fixedly connected with the bottom end of the connector, a fixing ring is fixedly connected with the bottom end of the connector, an air bag is fixedly connected with the inner wall of the valve pipe, and a sealing ring is fixedly connected with the air bag. A circular groove is formed in the outer wall of the connecting pipe, an annular groove is formed in the inner wall of the valve pipe, a contact mechanism is arranged on the inner wall of the annular groove, a coating assembly is arranged on the outer wall of the valve pipe, the contact mechanism comprises a rubber pad, and the rubber pad is slidably connected to the inner wall of the annular groove. The bottom end of the rubber pad is elastically connected with the annular groove through a reset spring. According to the utility model, the fixed ring and the rubber pad are arranged, the reset spring is used for continuous contact sealing, and the circular groove is in contact with the air bag to form multiple sealing, so that the sealing performance of the device after connection is ensured, and the conditions of air leakage and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the field of valve nozzles, in particular to a valve nozzle with a multiple sealing mechanism. Background Art

[0002] A valve nozzle is a device installed on a tire for inflating and deflating the tire and maintaining a stable internal air pressure in the tire. It mainly consists of a valve core and a valve nozzle body, etc.

[0003] In the prior art, there are the following defects; traditional valve nozzles often only adopt a single sealing method, and the sealing effect has certain deficiencies, and air leakage is likely to occur due to poor sealing. This not only affects the normal use of the tire, but may also cause many problems such as frequent inflation and affecting vehicle driving safety. Therefore, a valve nozzle with a multiple sealing mechanism is proposed to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a valve nozzle with a multiple sealing mechanism, aiming to improve the problem that most traditional valve nozzles in the prior art adopt a single seal and are prone to air leakage.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A valve nozzle with a multiple sealing mechanism, including a valve tube, the inner wall of the valve tube is threadedly connected with a connector, the bottom end of the connector is fixedly connected with a connecting tube, the bottom end of the connector is fixedly connected with a fixing ring, an airbag is fixedly connected to the inner wall of the valve tube, a circular groove is opened on the outer wall of the connecting tube, an annular groove is opened on the inner wall of the valve tube, a contact mechanism is arranged on the inner wall of the annular groove, and a coating assembly is arranged on the outer wall of the valve tube;

[0006] The contact mechanism includes a rubber pad, the rubber pad is slidably connected to the inner wall of the annular groove, and the bottom end of the rubber pad is elastically connected to the annular groove through a return spring.

[0007] As a further description of the above technical solution:

[0008] The coating assembly includes a heat insulation layer, and the heat insulation layer is arranged on the surface of the valve tube.

[0009] As a further description of the above technical solution:

[0010] The top end of the heat insulation layer is fixedly connected with an anti-corrosion layer.

[0011] As a further description of the above technical solution:

[0012] The top end of the anti-corrosion layer is fixedly connected with a wear-resistant layer.

[0013] As a further description of the above technical solution:

[0014] The bottom end of the rubber pad is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to the inner wall of the top end of the annular groove.

[0015] As a further description of the above technical solution:

[0016] The top end of the rubber pad is in contact with the bottom end of the fixing ring, and the outer wall of the fixing ring is in contact with the inner wall of the annular groove.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the airbag is in contact with the inner wall of the circular groove, and the outer wall of the connecting pipe is in contact with the inner wall of the valve pipe.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, by setting the fixing ring and the rubber pad and using the return spring to continuously contact and seal, and the circular groove and the airbag to contact and form multiple seals, the sealing performance after the device is connected is ensured, and the occurrence of air leakage and other situations is avoided.

[0021] 2. In the utility model, by setting the heat insulation layer, the anti-corrosion layer and the wear-resistant layer, the heat insulation layer can slow down the heat conduction and prevent the material performance from decreasing due to temperature change, the anti-corrosion layer can resist corrosion and ensure the integrity of the valve nozzle structure and mechanical properties, so that the sealing mechanism is continuously reliable; the wear-resistant layer can avoid surface wear and damage to the sealing structure and reduce the overall strength, which effectively guarantees the normal service life and sealing reliability of the valve pipe. Description of the drawings

[0022] Figure 1 It is an overall three-dimensional schematic diagram of the valve pipe of a valve nozzle with a multiple sealing mechanism proposed by the utility model;

[0023] Figure 2 It is an overall sectional view schematic diagram of the valve pipe of a valve nozzle with a multiple sealing mechanism proposed by the utility model;

[0024] Figure 3 It is an exploded sectional view schematic diagram of the valve pipe and the connecting pipe of a valve nozzle with a multiple sealing mechanism proposed by the utility model;

[0025] Figure 4 It is an exploded sectional view schematic diagram of the valve pipe and the connecting pipe of a valve nozzle with a multiple sealing mechanism proposed by the utility model;

[0026] Figure 5 It is an overall display schematic diagram of the coating assembly of a valve nozzle with a multiple sealing mechanism proposed by the utility model.

[0027] Legend:

[0028] 1. Valve tube; 2. Connector; 3. Connecting pipe; 4. Fixed ring; 5. Airbag; 6. Circular groove; 7. Ring groove; 8. Return spring; 9. Rubber pad; 10. Heat insulation layer; 11. Anticorrosion layer; 12. Wear-resistant layer. Specific implementation mode

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Refer to Figures 1 - 3 , an embodiment provided by the present invention: A valve nozzle with a multiple sealing mechanism, including a valve tube 1, the inner wall of the valve tube 1 is threadedly connected with a connector 2, and the valve tube 1 has thread patterns that match the outer wall of the connector 2. The connector 2 can be installed in the valve tube 1 by threading through the prior art. The bottom end of the connector 2 is fixedly connected with a connecting pipe 3. The connector 2 and the connecting pipe 3 form the entire valve core. The valve core is the prior art and will not be elaborated here. The bottom end of the connector 2 is fixedly connected with a fixed ring 4, and the inner wall of the valve tube 1 is fixedly connected with an airbag 5. The airbag 5 can deform and will return to its initial state when not being squeezed. A circular groove 6 is opened on the outer wall of the connecting pipe 3, and the circular groove 6 matches the airbag 5, which can satisfy the airbag 5 filling the inner wall of the circular groove 6 to form the first layer of seal. A ring groove 7 is opened on the inner wall of the valve tube 1, and a contact mechanism is arranged on the inner wall of the ring groove 7. A coating assembly is arranged on the outer wall of the valve tube 1. The contact mechanism includes a rubber pad 9. The rubber pad 9 is made of rubber material and has a certain elasticity, which can fill the tiny gap between the two. The rubber pad 9 is slidably connected to the inner wall of the ring groove 7, and the bottom end of the rubber pad 9 is elastically connected to the ring groove 7 through a return spring 8.

[0031] Refer to Figure 5, the coating assembly includes a heat insulation layer 10, and the heat insulation layer 10 is a ceramic heat insulation coating. When heat is transferred to the coating layer by means of radiation, conduction, etc., the ceramic microbeads will reflect most of the heat back, and at the same time its low thermal conductivity also prevents the conduction of heat inside the coating. The heat insulation layer 10 is arranged on the surface of the valve tube 1. The top end of the heat insulation layer 10 is fixedly connected with an anti-corrosion layer 11, and the anti-corrosion layer 11 is a polyurethane anti-corrosion coating. The coating formed after the polyurethane coating is cured has excellent barrier properties and can prevent the intrusion of corrosive substances. The top end of the anti-corrosion layer 11 is fixedly connected with a wear-resistant layer 12, and the wear-resistant layer 12 is a nano-composite coating material, which has good wear resistance, corrosion resistance and self-healing ability. When part of the nano-composite coating is slightly damaged, it can achieve self-healing through the migration and rearrangement of nano-particles, and its hardness can be adjusted according to the type and content of nano-particles to meet different wear resistance requirements.

[0032] Refer to Figures 2 - 4 , the bottom end of the rubber pad 9 is fixedly connected with one end of the return spring 8. At this time, the return spring 8 is in a compressed state. When resetting, the reverse elastic force of the return spring 8 will drive the rubber pad 9 to reset upward. The other end of the return spring 8 is fixedly connected with the top inner wall of the annular groove 7. The top end of the rubber pad 9 is in contact with the bottom end of the fixing ring 4. The outer wall of the fixing ring 4 is in contact with the inner wall of the annular groove 7. The inner wall size of the annular groove 7 is the same as the size of the fixing ring 4. The outer wall of the airbag 5 is in contact with the inner wall of the circular groove 6. The outer wall of the connecting pipe 3 is in contact with the inner wall of the valve tube 1.

[0033] Working principle: First, when it is necessary to disassemble the connector 2 and the connecting pipe 3, only need to use an external tool to screw out the connector 2 together with the connecting pipe 3 from the inner wall of the valve tube 1. When the connector 2 drives the connecting pipe 3 and the fixing ring 4 to move upward, when the rubber pad 9 is no longer squeezed, it will use the elastic force of the return spring 8 to drive the rubber pad 9 to reset. During the movement of the connecting pipe 3, the circular groove 6 will squeeze the airbag 5 and separate the circular groove 6 and the airbag 5. When it is necessary to install the connector 2 and the connecting pipe 3, just screw the connector 2 and the connecting pipe 3 into the valve tube 1 according to the above steps, make the bottom end of the fixing ring 4 contact the rubber pad 9 and compress the return spring 8, and use the elastic force of the return spring 8 to make the rubber pad 9 continuously fit with the fixing ring 4 to complete the first layer of sealing. At the same time, the outer wall of the connecting pipe 3 squeezes the airbag 5 to make it deform. When the circular groove 6 and the airbag 5 coincide, use the self-elastic force of the airbag 5 to reset and fill the entire circular groove 6 to complete the second layer of sealing, ensuring the sealing performance of the device after connection.

[0034] During the use of the entire valve tube 1, the heat insulation layer 10 can slow down the heat conduction, avoiding the degradation of the valve stem material properties or the aging and deformation of the internal seals due to excessive or too low temperature, thereby indirectly maintaining the stability of the sealing performance and ensuring the normal operation of the tire inflation system. The anti-corrosion layer 11 can prevent the metal components from rusting and corroding, ensuring the structural integrity and mechanical properties of the valve stem, enabling the sealing mechanism to work continuously and reliably without seal failure caused by the damage of the metal components, and the wear-resistant layer 12 can prevent the damage of the sealing structure or the reduction of the overall strength of the valve stem due to surface wear, thus ensuring the normal service life of the valve stem and the reliability of the seal.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve nozzle with a multiple sealing mechanism, including a valve tube (1), characterized in that: The inner wall of the valve tube (1) is threadedly connected with a connector (2). The bottom end of the connector (2) is fixedly connected with a connecting pipe (3). The bottom end of the connector (2) is fixedly connected with a fixing ring (4). The inner wall of the valve tube (1) is fixedly connected with an airbag (5). A circular groove (6) is formed in the outer wall of the connecting pipe (3). An annular groove (7) is formed in the inner wall of the valve tube (1). A contact mechanism is arranged on the inner wall of the annular groove (7). A coating assembly is arranged on the outer wall of the valve tube (1); The contact mechanism includes a rubber pad (9). The rubber pad (9) is slidably connected to the inner wall of the annular groove (7). The bottom end of the rubber pad (9) is elastically connected to the annular groove (7) through a return spring (8).

2. The valve stem with a multiple sealing mechanism according to claim 1, characterized in that: The coating assembly includes a heat insulation layer (10). The heat insulation layer (10) is arranged on the surface of the valve tube (1).

3. The valve nozzle with a multiple sealing mechanism according to claim 2, characterized in that: The top end of the heat insulation layer (10) is fixedly connected with an anti-corrosion layer (11).

4. The valve nozzle with a multiple sealing mechanism according to claim 3, characterized in that: The top end of the anti-corrosion layer (11) is fixedly connected with a wear-resistant layer (12).

5. The valve nozzle with a multiple sealing mechanism according to claim 1, characterized in that: The bottom end of the rubber pad (9) is fixedly connected with one end of the return spring (8). The other end of the return spring (8) is fixedly connected with the top inner wall of the annular groove (7).

6. The valve nozzle with a multiple sealing mechanism according to claim 1, characterized in that: The top end of the rubber pad (9) is in contact with the bottom end of the fixing ring (4). The outer wall of the fixing ring (4) is in contact with the inner wall of the annular groove (7).

7. The valve nozzle with a multiple sealing mechanism according to claim 1, characterized in that: The outer wall of the airbag (5) is in contact with the inner wall of the circular groove (6). The outer wall of the connecting pipe (3) is in contact with the inner wall of the valve tube (1).

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