Adjustable air valve

Abstract

The utility model relates to the technical field of air valves, in particular to an adjustable air valve which comprises a valve cover fixedly arranged at the bottom of a valve seat, a bolt fixedly arranged at the center of the valve seat and the valve cover in a penetrating mode, a valve plate and a buffer plate vertically arranged in the valve seat in a sliding mode, and a fixing pin arranged at the joint of the valve cover and the bottom of the bolt. The fixing pin is used for fixing and limiting, a nut used for fixing is arranged on the top of the bolt in a threaded mode, and the long pin and the short pin are arranged to be used in cooperation, so that the positions of the valve plate and the buffer plate can be adjusted more finely, flow control is more accurate, and the precise requirements of different application scenes for gas flow can be met; by arranging the nut and the fixing pin, the air valve has the multiple advantages of providing fastening force, preventing looseness, adjusting flexibility, fixing and limiting, enhancing structural strength and the like, and the air valve can still keep good working performance under the severe conditions of high pressure, high temperature and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas valve, especially adjustable gas valve. BACKGROUND

[0002] With the development of industrial production, the accurate control of gas flow becomes more and more important, and adjustable gas valve emerges as the times require. In recent years, with the continuous progress of computer technology and automation technology, the adjustment accuracy and automation degree of adjustable gas valve have also been significantly improved.

[0003] The working principle of adjustable gas valve is to change the gas flow by adjusting the opening of the valve. Its structural features usually include valve body, actuator (such as manual, electric or pneumatic actuator) and adjusting mechanism. Adjustable gas valve has wide application fields, such as industrial production, pneumatic conveying, aerospace, laboratory research, etc.

[0004] The gas valve cannot accurately control the gas flow and is not stable in installation, resulting in large flow fluctuation and leakage caused by the decline of the sealing performance of the gas valve. In view of this, the adjustable gas valve is provided. SUMMARY

[0005] The main purpose of the utility model is to provide adjustable gas valve, so as to solve the problem of large flow fluctuation and leakage caused by the decline of the sealing performance of the gas valve in the related art when the gas valve cannot accurately control the gas flow and is not stable in installation.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, an adjustable gas valve is provided, which comprises a valve seat, a valve cover is fixedly arranged at the bottom of the valve seat, a bolt is fixedly arranged at the center of the valve seat and the valve cover, a valve disc and a buffer disc are vertically and slidably arranged in the valve seat, a fixed pin is arranged at the connection between the valve cover and the bottom of the bolt, the fixed pin is used for limiting the bolt, and a nut is threadedly arranged at the top of the bolt.

[0007] Further, a groove is formed in the center of the valve seat, the valve disc and the buffer disc are slidably installed in the groove, the valve disc is arranged above the buffer disc, and the thickness of the valve disc is greater than that of the buffer disc.

[0008] Further, a spring is fixedly arranged in the groove, and the spring is located at the center of the valve disc and the buffer disc.

[0009] Further, the nut comprises a first nut and a second nut which are threadedly arranged at one end of the bolt, the first nut is located at the top of the second nut, and the lower surface of the second nut is closely combined with the upper surface of the valve seat.

[0010] Furthermore, a plurality of inclined grooves are provided on one side of the valve seat through the valve cover, and one end of the inclined groove passes through the valve plate and the buffer plate. A short pin is inserted into the inclined groove, and the cross-section of the inserted end of the inclined groove is arc-shaped.

[0011] Furthermore, a straight groove is provided on the other side of the valve seat through the valve cover, and a long pin is inserted into the straight groove, and the length of the straight groove is greater than the length of the inclined groove.

[0012] Furthermore, two lift pads are fixedly installed inside the valve cover, and the lift pads are on the same side as the long pin.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In this adjustable gas valve, long pins and short pins are used in combination, which allows for more precise adjustment of the position of the valve plate and buffer plate, thereby making the flow control more accurate. This can meet the precise gas flow requirements of different application scenarios, and also help reduce flow fluctuations and improve the stability of flow control.

[0015] 2. The adjustable air valve is equipped with a nut and a fixing pin, which has multiple benefits such as providing fastening force, preventing loosening, adjusting flexibility, fixing limit, and enhancing structural strength, so that the air valve can maintain good working performance under harsh conditions such as high pressure, high temperature or high frequency vibration. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of the adjustable air valve in a preferred embodiment of the present invention;

[0017] Fig. 2 This is a cross-sectional view of the adjustable air valve in a preferred embodiment of the present invention;

[0018] Fig. 3 This is a schematic diagram of the planar structure of the adjustable air valve in a preferred embodiment of the present invention.

[0019] Illustration:

[0020] 1. Valve seat; 2. Bolt; 3. First nut; 4. Second nut; 5. Valve plate; 6. Buffer plate; 7. Lift pad; 8. Long pin; 9. Fixing pin; 10. Short pin; 11. Valve cover; 12. Spring; 13. Groove; 14. Inclined groove; 15. Straight groove. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please seeFigs. 1-3 As shown, the purpose of this embodiment is to provide an adjustable air valve, including a valve seat 1, a valve cover 11 fixedly disposed at the bottom of the valve seat 1, a bolt 2 fixedly disposed at the center of the valve seat 1 and the valve cover 11, a valve plate 5 and a buffer plate 6 vertically slidingly disposed inside the valve seat 1, a fixing pin 9 disposed at the connection between the valve cover 11 and the bottom of the bolt 2, the fixing pin 9 being used to fix and limit the bolt 2, and a nut being threaded on the top of the bolt 2.

[0023] The main function of the retaining pin 9 is to restrict the relative movement between the valve cover 11 and the bolt 2, thereby ensuring the overall stability and accuracy of the air valve. During the operation of the air valve, the valve cover 11 and the bolt 2 may be subjected to forces and vibrations from different directions. Without the restraint of the retaining pin 9, they may experience slight movement or deformation, which would affect the performance and sealing effect of the air valve. The retaining pin 9 has one or more cylindrical parts with a small diameter, which can be precisely inserted into the pre-designed holes at the bottom of the valve cover 11 and the bolt 2. When the retaining pin 9 is fully inserted, it will be firmly fixed in the hole, preventing relative movement between the valve cover 11 and the bolt 2.

[0024] The fixing pin 9 securely connects the valve cover 11 and bolt 2, forming a unified structure that shares the load with external stress and vibration. This not only improves the stability and durability of the valve but also ensures its excellent performance under harsh conditions such as high pressure, high temperature, or high frequency vibration.

[0025] A groove 13 is formed in the center of the valve seat 1. The valve plate 5 and the buffer plate 6 are slidably installed in the groove 13. Both the valve plate 5 and the buffer plate 6 can fit tightly in the groove 13 and slide freely within it. The valve plate 5 is positioned above the buffer plate 6, which helps to contact and regulate the airflow first when gas flows. The thickness of the valve plate 5 is greater than that of the buffer plate 6, which not only provides an additional sealing effect, ensuring that the airflow channel is tightly sealed in the closed state, but also increases the mass or inertia of the valve plate 5, making it more stable during regulation and less susceptible to external interference. In addition, the buffer plate 6 also plays a certain buffering role. When the valve plate 5 moves rapidly or is impacted, the buffer plate 6 can absorb part of the impact force, protecting the valve seat 1 and other components from damage.

[0026] A spring 12 is fixedly installed in the groove 13. The spring 12 is located at the center of the valve plate 5 and the buffer plate 6. This means that it can apply a balanced and symmetrical elastic force to the valve plate 5 and the buffer plate 6, which helps to ensure that the valve plate 5 and the buffer plate 6 remain stable during sliding and avoid longitudinal deflection or jamming caused by uneven force.

[0027] When external conditions (such as air pressure) change, causing the valve plate 5 and buffer plate 6 to move, the spring 12 provides a restoring force, enabling them to quickly return to their initial positions after the external conditions are removed. This is crucial for maintaining the stability and accuracy of the valve. When the valve plate 5 and buffer plate 6 move rapidly or are subjected to impact, the spring 12 absorbs some energy, acting as a buffer to protect them from damage. The elasticity of the spring 12 also ensures that the valve plate 5 and buffer plate 6 always maintain a certain contact force with the sidewall of the groove 13, which helps reduce frictional resistance during sliding and enhances the sealing effect.

[0028] The nuts include a first nut 3 and a second nut 4 threaded onto one end of the bolt 2. The first nut 3 is located on top of the second nut 4, ensuring that the two can fit tightly together on the bolt 2, thereby providing additional fastening force. The double nut design ensures that the gas valve can maintain good working performance under harsh conditions such as high pressure or high frequency vibration. Furthermore, the lower surface of the second nut 4 fits tightly against the upper surface of the valve seat 1, which not only provides additional support force but also helps prevent gas leakage from the connection.

[0029] A plurality of inclined grooves 14 are provided on one side of the valve seat 1, penetrating the valve cover 11. One end of each inclined groove 14 passes through the valve plate 5 and the buffer plate 6. A short pin 10 is inserted into the inclined groove 14, allowing the short pin 10 to move freely within the inclined groove 14 while maintaining a certain contact with the valve plate 5 and the buffer plate 6. The short pin 10 adjusts the air valve by contacting the valve plate 5 and the buffer plate 6. The cross-section of the insertion end of the inclined groove 14 is arc-shaped. The arc-shaped cross-section helps to reduce the frictional resistance of the short pin 10 during movement, allowing it to slide more smoothly. The arc-shaped cross-section also provides a certain guiding effect, helping the short pin 10 maintain the correct path within the inclined groove 14. It also increases the strength and durability of the inclined groove 14, enabling it to better withstand external pressure and vibration.

[0030] A straight groove 15 is provided on the other side of the valve seat 1, penetrating the valve cover 11. A long pin 8 is inserted into the straight groove 15. Compared with the inclined groove 14, the main difference of the straight groove 15 is that its shape is straight rather than curved, allowing the long pin 8 to move freely along a straight direction within the straight groove 15. This provides another way to adjust the air valve. Furthermore, the length of the straight groove 15 is greater than that of the inclined groove 14, meaning that the long pin 8 has a larger range of movement within the straight groove 15, allowing for more precise adjustment of the air valve to adapt to different working conditions and flow requirements. At the same time, the length of the straight groove 15 also provides stronger structural support, helping to increase the overall stability and durability of the air valve. The long pin 8 is a key component that engages within the straight groove 15. It achieves further adjustment of the air valve through contact with the valve plate 5 and the buffer plate 6. By adjusting the position of the long pin 8 within the straight groove 15, the relative distance or angle between the valve plate 5 and the buffer plate 6 can be changed, thereby achieving more precise control of the air valve flow.

[0031] Two lift pads 7 are fixedly installed inside the valve cover 11 to ensure stability during the operation of the air valve. The lift pads 7 are made of a material with high hardness and wear resistance to withstand the impact and wear when the air valve is opened and closed. The lift pads 7 are on the same side as the long pin 8, which allows the lift pads 7 to work together with the long pin 8 to regulate the air valve flow.

[0032] The main function of the lift pad 7 in the air valve is to limit the maximum lift of the valve plate 5 and the buffer plate 6 during the opening process. The lift pad 7 also protects the valve plate 5 and the buffer plate 6. When the air valve is closed, the lift pad 7 can prevent the valve plate 5 and the buffer plate 6 from excessively impacting the valve seat 1 or other components, thereby extending their service life.

[0033] In practical use, this utility model involves installing a bolt 2 at the center of the valve seat 1, placing the valve cover 11 on the valve seat 1, and passing the bolt 2 through the center hole of the valve cover 11. A fixing pin 9 is then engaged at the bottom connection between the valve cover 11 and the bolt 2 to restrict relative movement between them. A buffer plate 6 is installed in the groove 13, and a valve plate 5 is installed above the buffer plate 6. A spring 12 is placed in the groove 13, positioned at the center of the valve plate 5 and the buffer plate 6. A first nut 3 is first installed on top of the bolt 2, followed by a second nut. 4. Ensure that both are tightly fitted together. Adjust the position of the nut so that the lower surface of the second nut 4 is tightly fitted with the upper surface of the valve seat 1. Insert the short pin 10 into the inclined groove 14 and the long pin 8 into the straight groove 15. Fix two lift pads 7 inside the valve cover 11, ensuring that they are on the same side as the long pin 8. After installation, adjust the position of the short pin 10 in the inclined groove 14 and the position of the long pin 8 in the straight groove 15 as needed to change the relative distance or angle between the valve plate 5 and the buffer plate 6, thereby achieving precise control of the air valve flow.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adjustable air valve, comprising a valve seat (1), wherein a valve cover (11) is fixedly disposed at the bottom of the valve seat (1), and a bolt (2) is fixedly disposed at the center of the valve seat (1) and the valve cover (11), characterized in that, The valve seat (1) is vertically slidably provided with a valve plate (5) and a buffer plate (6). A fixing pin (9) is provided at the connection between the valve cover (11) and the bottom of the bolt (2). The fixing pin (9) is used to fix and limit the bolt (2). A nut is threaded on the top of the bolt (2).

2. The adjustable air valve according to claim 1, characterized in that, A groove (13) is provided in the center of the valve seat (1). The valve plate (5) and the buffer plate (6) are slidably installed in the groove (13). The valve plate (5) is located above the buffer plate (6), and the thickness of the valve plate (5) is greater than the thickness of the buffer plate (6).

3. The adjustable air valve according to claim 2, characterized in that, A spring (12) is fixedly installed in the groove (13), and the spring (12) is located at the center of the valve plate (5) and the buffer plate (6).

4. The adjustable air valve according to claim 1, characterized in that, The nut includes a first nut (3) and a second nut (4) threaded onto one end of the bolt (2), the first nut (3) being located on top of the second nut (4), and the lower surface of the second nut (4) being in close contact with the upper surface of the valve seat (1).

5. The adjustable air valve according to claim 1, characterized in that, The valve seat (1) has several inclined grooves (14) through the valve cover (11) on one side, and one end of the inclined groove (14) passes through the valve plate (5) and the buffer plate (6). A short pin (10) is inserted into the inclined groove (14), and the cross section of the insertion end of the inclined groove (14) is arc-shaped.

6. The adjustable air valve according to claim 5, characterized in that, The valve seat (1) has a straight groove (15) through the valve cover (11) on the other side. A long pin (8) is inserted into the straight groove (15), and the length of the straight groove (15) is greater than the length of the inclined groove (14).

7. The adjustable air valve according to claim 6, characterized in that, Two lift pads (7) are fixedly installed inside the valve cover (11), and the lift pads (7) are on the same side as the long pin (8).

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