Standard air valve for normal temperature and high pressure

Abstract

The utility model belongs to the technical field of valves, and relates to a standard air valve used at normal temperature and high pressure, which comprises a valve body, a threaded port arranged at the top end of the valve body, a valve cover mounted on the inner side of the threaded port, a valve core arranged inside the valve body, a valve rod mounted on the inner side of the valve cover, a guide seat arranged at the top end of the valve core, and an outer top end of the guide seat contacted with the bottom end of the valve cover. The bottom end of the guide seat is connected with a sealing gasket, the inner side of the guide seat is slidably connected with a pressure head, the top end of the valve rod is provided with a handle, the outer side of the handle is provided with a plurality of retaining seats, the inner sides of the retaining seats are rotatably connected with rotating shafts, the rotating shafts are sleeved with rotating seats, and one end of each rotating seat is provided with an extension handle. According to the valve handle, the force arm of the valve handle can be effectively increased, a user can conveniently rotate the valve handle, and the valve handle has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a standard gas valve for normal temperature and high pressure. Background Technology

[0002] In many fields such as industrial production and scientific research experiments, precise control of the flow rate and pressure of standard gases is often required. As a key component, the performance of the standard gas valve directly affects the stability and measurement accuracy of the entire system. Under normal temperature and high pressure conditions, traditional standard gas valves have some significant shortcomings. Current standard gas valves for normal temperature and high pressure require the valve to withstand high pressure and significant torque during use, making it difficult for operators to rotate the valve handle and affecting user experience. Therefore, this utility model proposes a standard gas valve for normal temperature and high pressure. Utility Model Content

[0003] The main objective of this invention is to provide a standard gas valve for normal temperature and high pressure, in order to solve the problem mentioned in the background art that the current standard gas valve for normal temperature and high pressure needs to withstand high pressure and large torque during use, which makes it difficult for operators to rotate the valve handle and affects the user's use.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a standard gas valve for normal temperature and high pressure, comprising a valve body, a threaded opening at the top of the valve body, a valve cover installed inside the threaded opening, a valve core inside the valve body, a valve stem installed inside the valve cover, a guide seat at the top of the valve core, the outer top of the guide seat contacting the bottom of the valve cover, a sealing gasket connected to the bottom of the guide seat, a pressure head slidably connected to the inner side of the guide seat, a handle installed at the top of the valve stem, several retaining seats installed outside the handle, a rotating shaft rotatably connected to the inner side of the retaining seats, a rotating seat fitted outside the rotating shaft, an extension handle installed at one end of the rotating seat, and rotation limiting mechanisms embedded on both sides of the rotating seat.

[0005] Preferably, the rotation limiting mechanism includes a protrusion, a slot is provided on the inner side of the retaining seat, one end of the protrusion is engaged with the inner side of the slot, a cavity is provided on the inner side of the rotating seat, and sliders are slidably connected to both ends of the inner side of the cavity, with one side of the slider and the other end of the protrusion fixedly connected.

[0006] Preferably, a partition is installed in the middle of the inner side of the cavity, and springs are installed on both sides of the partition, with one end of the springs fixedly connected to the other side of the slider.

[0007] Preferably, one end of the protrusion has a rounded arc shape.

[0008] Preferably, the bottom end of the valve stem has a hole, and the inner side of the hole is provided with a ball bearing.

[0009] Preferably, the top end of the pressure head is in contact with the bottom end of the ball, and the bottom end of the pressure head is in contact with the top end of the valve core.

[0010] Preferably, a groove is provided on the outer side of the valve stem, and a sealing ring is installed on the inner side of the groove.

[0011] The beneficial effects of this utility model's technical solution are as follows: This standard gas valve for normal temperature and high pressure, through the arrangement of the retaining seat, rotating shaft, and rotating seat, allows for the rotatable extension handle. When needed, the extension handle can be extended, increasing the lever arm length based on the lever principle, thus allowing operators to operate the valve with less force. This solves the problem of laborious valve operation under normal temperature and high pressure conditions. The extension handle is positioned when rotated laterally by engaging one end of the protrusion with the inner side of the slot, preventing arbitrary rotation during valve operation. The fixed connection between one side of the slider and the other end of the protrusion improves the stability of the protrusion's movement. The fixed connection between one end of the spring and the other side of the slider enables the protrusion to self-rebound. Yes, the rounded shape of one end of the protrusion makes it easier for the protrusion to slide into or out of the slot, reducing resistance during operation. The ball bearings inside the hole convert the rotational motion of the valve stem into relative rolling, reducing the friction between the valve stem and the pressure head, lowering the torque required to operate the valve, and making valve operation easier and more flexible. The sealing ring installed inside the groove effectively prevents gas or liquid inside the valve from leaking along the gap between the valve stem and the valve cover, enhancing the valve's sealing performance and ensuring the safety and reliability of the valve under normal temperature and high pressure environments. This utility model effectively increases the lever arm of the valve handle, making it easier for users to rotate the valve handle, and has high practical value. Attached Figure Description

[0012] Figure 1 This is a diagram showing the arrangement of a standard gas valve for normal temperature and high pressure during operation, as shown in the example.

[0013] Figure 2 This is the second three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 3 This is one of the disassembled three-dimensional structural diagrams disclosed in the embodiments of this utility model.

[0015] Figure 4 This is the second disassembled three-dimensional structural diagram disclosed in the embodiment of this utility model.

[0016] Figure 5 This is a cross-sectional view of the rotating seat disclosed in an embodiment of the present utility model.

[0017] The numbers in the diagram represent:

[0018] 100. Valve body; 10001. Threaded port; 101. Valve cover; 102. Valve stem; 10201. Groove; 10202. Hole; 103. Sealing ring; 104. Ball bearing; 105. Guide seat; 106. Pressure head; 107. Sealing gasket; 108. Valve core; 109. Handle; 110. Retaining seat; 11001. Slot; 111. Rotating shaft; 112. Rotating seat; 11201. Cavity; 113. Extension handle; 114. Rotation limit mechanism; 11401. Protrusion; 11402. Partition plate; 11403. Spring; 11404. Slider. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments.

[0020] Example:

[0021] like Figures 1 to 5 As shown, this utility model discloses a standard gas valve for normal temperature and high pressure, comprising a valve body 100, a threaded port 10001 at the top of the valve body 100, a valve cover 101 installed inside the threaded port 10001, a valve core 108 inside the valve body 100, a valve stem 102 installed inside the valve cover 101, a guide seat 105 at the top of the valve core 108, the outer top of the guide seat 105 contacting the bottom of the valve cover 101, a sealing gasket 107 connected to the bottom of the guide seat 105, a pressure head 106 slidably connected to the inner side of the guide seat 105, and a handle 109 installed at the top of the valve stem 102. Several retaining seats 110 are installed on the outer side of the valve. A rotating shaft 111 is rotatably connected to the inner side of the retaining seat 110. A rotating seat 112 is fitted on the outer side of the rotating shaft 111. An extension handle 113 is installed at one end of the rotating seat 112. Rotation limiting mechanisms 114 are embedded on both sides of the rotating seat 112. Through the arrangement of the retaining seat 110, the rotating shaft 111 and the rotating seat 112, the extension handle 113 can be rotatably set. When needed, the extension handle 113 can be unfolded. Based on the lever principle, the lever arm length can be increased, so that the operator can operate the valve with less force, thus solving the problem of difficult valve operation under normal temperature and high pressure.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5The rotation limiting mechanism 114 includes a protrusion 11401. A slot 11001 is formed on the inner side of the retaining seat 110. One end of the protrusion 11401 engages with the inner side of the slot 11001. A cavity 11201 is formed on the inner side of the rotating seat 112. Slider blocks 11404 are slidably connected to both ends of the inner side of the cavity 11201. One side of the slider 11404 is fixedly connected to the other end of the protrusion 11401. A partition 11402 is installed in the middle of the inner side of the cavity 11201. Springs 11403 are installed on both sides of the partition 11402. One end of the spring 11403 is fixedly connected to the other side of the slider 11404. The protrusion 11401... The extension handle 113 is positioned when rotated to the side by engaging one end of the protrusion 11401 with the inner side of the slot 11001, thus preventing the extension handle 113 from rotating arbitrarily during valve operation. The slider 11404 is fixedly connected to one side of the protrusion 11401, improving the stability of the movement of the protrusion 11401. The spring 11403 is fixedly connected to one end of the slider 11404, enabling the protrusion 11401 to have a self-rebound function. The rounded shape of one end of the protrusion 11401 makes it easier for the protrusion 11401 to slide into or out of the slot 11001, reducing resistance during operation.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 The valve stem 102 has a hole 10202 at its bottom end, and a ball bearing 104 is provided inside the hole 10202. The top end of the pressure head 106 contacts the bottom end of the ball bearing 104, and the bottom end of the pressure head 106 contacts the top end of the valve core 108. The valve stem 102 has a groove 10201 on its outer side, and a sealing ring 103 is installed inside the groove 10201. The ball bearing 104 inside the hole 10202 can convert the rotational movement of the valve stem 102 into relative rolling, reducing the friction between the valve stem 102 and the pressure head 106, reducing the torque required to operate the valve, and making the valve operation easier and more flexible. The sealing ring 103 installed inside the groove 10201 can effectively prevent gas or liquid inside the valve from leaking along the gap between the valve stem 102 and the valve cover 101, enhancing the sealing performance of the valve and ensuring the safety and reliability of the valve under normal temperature and high pressure environments.

[0026] Specifically, the working principle of this type of standard gas valve for normal temperature and high pressure is as follows: During use, the extension handle 113 is rotatable by setting up the retaining seat 110, rotating shaft 111, and rotating seat 112. When needed, the extension handle 113 can be extended, increasing the lever arm length based on the lever principle, thus allowing the operator to operate the valve with less force. This solves the problem of laborious valve operation under normal temperature and high pressure conditions. The extension handle 113 is positioned when rotated laterally by engaging one end of the protrusion 11401 with the inner side of the slot 11001, preventing arbitrary rotation during valve operation. The protrusion 11401 is fixedly connected to one side of the slider 11404 and the other end of the protrusion 11401, improving the stability of the protrusion 11401's movement. Finally, the protrusion 11403 is fixedly connected to one end of the spring 11403 and the other side of the slider 11404, allowing the protrusion 11401 to move more smoothly. The self-rebound function, achieved through the arc-shaped design of one end of the protrusion 11401, makes it easier for the protrusion 11401 to slide into or out of the slot 11001, reducing resistance during operation. The ball bearing 104 located inside the hole 10202 converts the rotational motion of the valve stem 102 into relative rolling, reducing friction between the valve stem 102 and the pressure head 106, lowering the torque required to operate the valve, and making valve operation easier and more flexible. The sealing ring 103 installed inside the groove 10201 effectively prevents gas or liquid inside the valve from leaking along the gap between the valve stem 102 and the valve cover 101, enhancing the valve's sealing performance and ensuring the safety and reliability of the valve under normal temperature and high pressure environments. This invention effectively increases the lever arm of the valve handle, making it easier for users to rotate the valve handle, and has high practical value.

Claims

1. A reference gas valve for normal temperature high pressure, characterized by: Including the valve body, the top end of the valve body is provided with a threaded port, the inner side of the threaded port is provided with a valve cover, the inside of the valve body is provided with a valve core, the inner side of the valve cover is provided with a valve rod, the top end of the valve core is provided with a guide seat, the outer side top end of the guide seat and the bottom end of the valve cover are in contact, the bottom end of the guide seat is connected with a sealing gasket, the inner side of the guide seat is slidingly connected with a pressure head, the top end of the valve rod is provided with a handle, the outer side of the handle is provided with a plurality of retaining seats, the inner side of the retaining seat is rotatably connected with a rotating shaft, the outer side of the rotating shaft is sleeved with a rotating seat, one end of the rotating seat is provided with an extension handle, both sides of the rotating seat are embedded with a rotation limiting mechanism.

2. The reference gas valve for high pressure at normal temperature according to claim 1, characterized in that: The rotation limiting mechanism comprises a protruding block, the inner side of the retaining seat is provided with a clamping groove, one end of the protruding block is clamped and connected with the inner side of the clamping groove, the inner side of the rotating seat is provided with a cavity, both ends of the inner side of the cavity are slidingly connected with a sliding block, one side of the sliding block is fixedly connected with the other end of the protruding block.

3. The reference gas valve for high pressure at normal temperature according to claim 2, characterized in that: The inner side of the cavity is provided with a partition plate in the middle, the both sides of the partition plate are provided with springs, one end of the spring is fixedly connected with the other side of the sliding block.

4. The reference gas valve for high pressure at normal temperature according to claim 2, characterized in that: The one end of the protruding block is in arc shape.

5. The reference gas valve for high pressure at normal temperature according to claim 1, characterized in that: The bottom end of the valve rod is provided with a hole, the inner side of the hole is provided with a ball.

6. The reference gas valve for high pressure at normal temperature according to claim 5, characterized in that: The top end of the pressure head is in contact with the bottom end of the ball, the bottom end of the pressure head is in contact with the top end of the valve core.

7. The reference gas valve for high pressure at normal temperature according to claim 1, characterized in that: The outer side of the valve rod is provided with a groove, the inner side of the groove is provided with a sealing ring.

Images