CNG (compressed natural gas) gun head inflation valve capable of being automatically opened and closed

Abstract

The utility model belongs to the technical field of CNG (compressed natural gas) inflating equipment, and particularly relates to an automatically opened and closed CNG gun head inflating valve which comprises a handle, a valve rod, an inflating valve joint, a bracket, an inflating valve main body, a locking ring, a spring, a handle nut, a nut sealing ring, a rectangular pad, a sealing pad, a valve core pad and an inflating valve core, the handle is connected with one end of the valve rod and fixed to the valve rod through the handle nut, the nut sealing ring is arranged between the handle nut and the valve rod, an inflation channel is formed in the inflation valve body, the support is fixed to the inflation valve body, and the inflation valve element is arranged in the inflation channel in the inflation valve body. The valve element pad is installed on the inflation valve element, the sealing pad is arranged at a connector of the inflation valve body, and the rectangular pad is installed at a specific position. The gas filling device is reasonable in design and easy and convenient to operate, the sealing performance and the gas filling efficiency are improved, and the safety of the gas filling process is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of CNG inflation equipment technology, and in particular to an automatic opening and closing CNG nozzle inflation valve. Background Technology

[0002] In the CNG (compressed natural gas) refueling process, traditional refueling valves suffer from problems such as cumbersome operation and unstable sealing performance. For example, some refueling valves require operators to perform relatively complicated operating procedures when opening and closing, which is not only time-consuming but also prone to gas leakage due to improper operation. At the same time, after long-term use, the valve's sealing components are prone to wear, reducing the sealing effect and affecting the safety and efficiency of refueling.

[0003] Therefore, developing a CNG nozzle charging valve that is easy to operate, has good sealing performance, and can automatically open and close is of great practical significance.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of traditional CNG filling valves mentioned in the background section, and to provide an automatically opening and closing CNG nozzle filling valve, which enables simple and convenient operation, improves sealing performance and filling efficiency, and ensures the safety of the filling process.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic opening and closing CNG nozzle inflation valve, including a handle, valve stem, inflation valve connector, bracket, inflation valve body, locking ring, spring, handle nut, nut sealing ring, rectangular pad, sealing pad, valve core pad and inflation valve core.

[0007] The handle is connected to one end of the valve stem, and the handle is fixed to the valve stem by a handle nut. The nut sealing ring is disposed between the handle nut and the valve stem. The inflation valve body has an inflation channel inside. The bracket is fixed on the inflation valve body. The inflation valve core is disposed in the inflation channel inside the inflation valve body. The valve core gasket is installed on the inflation valve core. The sealing gasket is disposed at the interface of the inflation valve body. The rectangular gasket is installed in a specific position. The inflation valve connector is connected to the inflation valve body by a locking ring. The spring is disposed between the valve stem and the inflation valve body.

[0008] Preferably, the handle and the valve stem are connected by a threaded connection.

[0009] Preferably, the inflation valve body is made of high-strength, corrosion-resistant metal material.

[0010] Preferably, the spring is a stainless steel helical spring.

[0011] Preferably, both the valve core gasket and the sealing gasket are made of rubber, and the rubber material has high elasticity and good sealing performance.

[0012] Preferably, the bracket is L-shaped, with one end fixed to the side of the inflation valve body and the other end used to support other components.

[0013] Preferably, the surface of the handle nut is provided with anti-slip texture.

[0014] Preferably, the end of the inflation valve connector that connects to the external CNG gas source and refueling equipment is provided with an internal thread.

[0015] Preferably, the rectangular pad is installed at the connection between the inflation valve body and the inflation valve connector.

[0016] Preferably, the valve stem has a protruding structure at the end near the valve core of the inflation valve.

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

[0018] Easy to operate: With the connection design between the handle and the valve stem, the operator can simply turn the handle to open and close the inflation valve. The operation process is simple and quick, reducing the workload of the operator.

[0019] Excellent sealing performance: The use of multiple sealing components, such as nut sealing rings, valve core gaskets, sealing gaskets, and rectangular gaskets, effectively prevents gas leakage, improves the sealing performance of the inflation valve, and ensures the safety of the gas filling process.

[0020] Automatic opening and closing function: The spring setting enables the automatic opening and closing of the inflation valve, which to a certain extent avoids safety hazards such as gas leakage caused by operator negligence in not closing the valve in time, and also improves the gas filling efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of an automatically opening and closing CNG nozzle inflation valve proposed in this utility model.

[0023] Figure 2 for Figure 1 A structural diagram from a first-person perspective;

[0024] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure from the perspective of the middle AA (analogous to ...

[0025] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure from the perspective of the middle BB.

[0026] In the diagram: 1. Handle; 2. Valve stem; 3. Inflation valve connector; 4. Bracket; 5. Inflation valve body; 6. Locking ring; 7. Spring; 8. Handle nut; 9. Nut sealing ring; 10. Rectangular pad; 11. Sealing pad; 12. Valve core pad; 13. Inflation valve core. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Reference Figure 1-4 An automatically opening and closing CNG nozzle inflation valve includes a handle 1, a valve stem 2, an inflation valve connector 3, a bracket 4, an inflation valve body 5, a locking ring 6, a spring 7, a handle nut 8, a nut sealing ring 9, a rectangular pad 10, a sealing pad 11, a valve core pad 12, and an inflation valve core 13.

[0029] Handle 1 is connected to one end of valve stem 2. Handle 1 is fixed to valve stem 2 by handle nut 8. Nut sealing ring 9 is set between handle nut 8 and valve stem 2. Inflation channel is provided inside inflation valve body 5. Bracket 4 is fixed on inflation valve body 5. Inflation valve core 13 is set in inflation channel inside inflation valve body 5. Valve core gasket 12 is installed on inflation valve core 13. Sealing gasket 11 is set at interface of inflation valve body 5. Rectangular gasket 10 is installed in a specific position. Inflation valve connector 3 is connected to inflation valve body 5 by locking ring 6. Spring 7 is set between valve stem 2 and inflation valve body 5.

[0030] Handle and valve stem connection structure: Handle 1 is connected to one end of valve stem 2. Handle 1 is fixed to valve stem 2 by handle nut 8. Nut sealing ring 9 is set between handle nut 8 and valve stem 2 to prevent gas from leaking from the connection. When the operator turns handle 1, it can drive valve stem 2 to rotate or move accordingly.

[0031] Inflation valve main body structure: The inflation valve body 5 is the core component of the entire inflation valve. It has an inflation channel inside. The bracket 4 is fixed on the inflation valve body 5, which plays the role of supporting and fixing other components.

[0032] Valve core and sealing structure: The inflation valve core 13 is located in the inflation channel inside the inflation valve body 5. The valve core gasket 12 is installed on the inflation valve core 13 to enhance the sealing effect between the inflation valve core 13 and the inflation valve body 5. The sealing gasket 11 is set at the interface of the inflation valve body 5 to further ensure the sealing during the inflation process. The rectangular gasket 10 is installed in a specific position to play an auxiliary sealing and buffering role.

[0033] Connection and fixing structure: The inflation valve connector 3 is used to connect to the external CNG gas source and gas filling equipment. It is tightly connected to the inflation valve body 5 through the locking ring 6 to ensure the stability and sealing of the connection. The spring 7 is set between the valve stem 2 and the inflation valve body 5. The elastic force of the spring 7 realizes the automatic opening and closing function of the inflation valve. When a certain operating force is applied externally, such as turning the handle 1, the valve stem 2 overcomes the elastic force of the spring 7, so that the inflation valve opens. When the operating force is removed, the elastic force of the spring 7 pushes the valve stem 2 to return to its original position, thereby closing the inflation valve.

[0034] In this embodiment, the handle 1 and the valve stem 2 are connected by a threaded connection, which enables the valve stem 2 to rotate or move stably when the handle 1 is turned.

[0035] In this embodiment, the inflation valve body 5 is made of high-strength corrosion-resistant metal material, which can effectively resist the corrosion of CNG gas and extend the service life of the inflation valve.

[0036] In this embodiment, spring 7 is a stainless steel helical spring, which has good elasticity and fatigue resistance, ensuring that the inflation valve can open and close stably and automatically.

[0037] In this embodiment, both the valve core gasket 12 and the sealing gasket 11 are made of rubber, and the rubber material has high elasticity and good sealing performance, which can effectively prevent gas leakage.

[0038] In this embodiment, the bracket 4 is L-shaped, with one end fixed to the side of the inflation valve body 5 and the other end used to support other components, thereby enhancing the stability of the entire inflation valve structure.

[0039] In this embodiment, the surface of the handle nut 8 is provided with anti-slip texture, which makes it convenient for operators to tighten and loosen the handle nut 8, and facilitates installation and maintenance.

[0040] In this embodiment, the end of the inflation valve connector 3 that connects to the external CNG gas source and refueling equipment is provided with an internal thread, which makes the connection tighter and facilitates disassembly and replacement.

[0041] In this embodiment, the rectangular pad 10 is installed at the connection between the inflation valve body 5 and the inflation valve connector 3, which serves to further seal and buffer vibration.

[0042] In this embodiment, the valve stem 2 has a protruding structure at one end near the inflation valve core 13. This protruding structure cooperates with the groove on the inflation valve core 13 to precisely control the opening and closing of the inflation valve core 13.

[0043] To prevent the inflation valve connector 3 from becoming contaminated with debris when not in use, and to facilitate quick access to the inflation valve connector 3, a rubber protective sleeve is snapped onto the inflation valve connector 3.

[0044] Installation steps: First, install the spring 7 in the corresponding position inside the inflation valve body 5, ensuring that one end of the spring contacts the valve stem 2 and the other end is fixed to the inflation valve body 5. Next, install the inflation valve core 13 in the inflation channel of the inflation valve body 5, and install the valve core gasket 12 on the inflation valve core 13 to ensure the sealing performance of the inflation valve core 13. Then, install the sealing gasket 11 at the interface of the inflation valve body 5, and then install the rectangular gasket 10 in the designated position. After that, pass the valve stem 2 through the inflation valve body 5, and connect the handle 1 to the valve stem 2 through the handle nut 8, while installing the nut sealing ring 9. Finally, connect the inflation valve connector 3 tightly to the inflation valve body 5 through the locking ring 6 to complete the installation of the entire inflation valve.

[0045] Working principle: In use, first connect the inflation valve connector 3 to the external CNG gas source and refueling equipment. When the operator turns the handle 1, the handle 1 drives the valve stem 2 to rotate or move. The valve stem 2 overcomes the elastic force of the spring 7, causing the inflation valve core 13 to open. CNG gas enters the inflation channel of the inflation valve body 5 through the inflation valve connector 3, thereby realizing the refueling operation for vehicles and other equipment. When refueling is completed, the operator releases the handle 1. The elastic force of the spring 7 pushes the valve stem 2 to return to its original position. The valve stem 2 drives the inflation valve core 13 to close, stopping the refueling. Throughout the process, all sealing components effectively prevent gas leakage, ensuring the safety and stability of the refueling process.

[0046] Precautions: During installation and use, ensure that all components are installed correctly and tightly to avoid a decrease in sealing performance due to loose parts. Regularly check the wear of sealing components. If wear or damage is found in the sealing gasket, valve core gasket, etc., it should be replaced in time to ensure the normal use and sealing performance of the inflation valve. At the same time, when operating the handle, the operator should follow the prescribed operating procedures to avoid excessive force or misoperation.

[0047] The above provides a detailed description of the automatically opening and closing CNG nozzle charging valve provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An automatically opening and closing CNG nozzle charging valve, characterized in that, Includes handle (1), valve stem (2), inflation valve connector (3), bracket (4), inflation valve body (5), locking ring (6), spring (7), handle nut (8), nut sealing ring (9), rectangular pad (10), sealing pad (11), valve core pad (12), and inflation valve core (13); The handle (1) is connected to one end of the valve stem (2). The handle (1) is fixed to the valve stem (2) by the handle nut (8). The nut sealing ring (9) is set between the handle nut (8) and the valve stem (2). The inflation valve body (5) has an inflation channel inside. The bracket (4) is fixed on the inflation valve body (5). The inflation valve core (13) is set in the inflation channel inside the inflation valve body (5). The valve core pad (12) is installed on the inflation valve core (13). The sealing pad (11) is set at the interface of the inflation valve body (5). The rectangular pad (10) is installed in a specific position. The inflation valve connector (3) is connected to the inflation valve body (5) by the locking ring (6). The spring (7) is set between the valve stem (2) and the inflation valve body (5).

2. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The handle (1) and valve stem (2) are connected by a threaded connection.

3. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The main body (5) of the inflation valve is made of high-strength corrosion-resistant metal material.

4. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The spring (7) is a stainless steel helical spring.

5. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, Both the valve core gasket (12) and the sealing gasket (11) are made of rubber, and the rubber material has high elasticity and good sealing performance.

6. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The bracket (4) is L-shaped, with one end fixed to the side of the inflation valve body (5) and the other end used to support other components.

7. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The handle nut (8) has anti-slip texture on its surface.

8. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The end of the gas filling valve connector (3) that connects to the external CNG gas source and gas filling equipment is provided with an internal thread.

9. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The rectangular pad (10) is installed at the connection between the inflation valve body (5) and the inflation valve connector (3).

10. The automatically opening and closing CNG nozzle charging valve according to claim 1, characterized in that, The valve stem (2) has a protruding structure at one end near the valve core (13) of the inflation valve.

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