Nitrogen discharge valve
By using cross grooves and screwdriver in the nitrogen leakage valve, combined with pressure sensors and displays, precise pressure adjustment of the spring and valve stem is achieved, solving the problem of cumbersome adjustment of the traditional nitrogen leakage valve and difficulty in achieving precise pressure control, and improving the stability and simplicity of operation.
Patent Information
- Application Number
- CN202422175313.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-05
AI Technical Summary
When traditional nitrogen leakage valves adjust the spring pressure to control the exhaust set value, they need to disassemble and reinstall the entire valve. The process is cumbersome and easily lead to performance degradation or damage. The adjustment method depends on empirical judgment, making it difficult to achieve accurate pressure control, affecting the stability of the system.
A nitrogen leakage valve is designed, using a cross groove and an external Phillips screwdriver to squeeze or loosen the spring through a threaded rod to achieve pressure adjustment, and the pressure of the valve stem and valve core is accurately adjusted through a pressure sensor and a display, simplifying operation and improving accuracy.
Accurate pressure adjustment of springs and valve stems is achieved, simplifies the use process, reduces operation difficulty, avoids the risk of degradation or damage of valve performance, and improves the stability of the system and the accuracy of pressure control.
Smart Images
Figure CN222992270U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nitrogen discharge valves, and particularly relates to a nitrogen discharge valve. Background Art
[0002] The nitrogen discharge valve, also known as the air release valve, is a control valve that does not require external energy and realizes automatic regulation by using the pressure change of the medium to be regulated itself. However, when the traditional nitrogen discharge valve adjusts the spring pressure to control the exhaust set value, it often needs to disassemble and reinstall the entire valve. This process is not only cumbersome and time-consuming, but also easily leads to a decline in valve performance or damage due to improper operation. In addition, the traditional adjustment method often relies on empirical judgment and is difficult to achieve precise pressure control, posing certain potential hazards to the stable operation of the system. Therefore, we propose a nitrogen discharge valve to solve the above problems. Content of the Utility Model
[0003] The main purpose of the utility model is to provide a nitrogen discharge valve, which solves the problems that when the traditional nitrogen discharge valve adjusts the spring pressure to control the exhaust set value, it often needs to disassemble and reinstall the entire valve. This process is not only cumbersome and time-consuming, but also easily leads to a decline in valve performance or damage due to improper operation. In addition, the traditional adjustment method often relies on empirical judgment and is difficult to achieve precise pressure control, posing certain potential hazards to the stable operation of the system.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A nitrogen discharge valve includes a valve body. A connection cavity is provided inside the valve body. An actuator frame is installed at the upper end of the valve body. Flange plates are respectively installed at one end of the valve body and the actuator frame close to each other. The flange plates close to each other are connected by bolts. A pressure regulating mechanism is installed between the valve body and the actuator frame. An adjustment cavity is provided inside the actuator frame. A pressure sensor is installed at the lower end inside the adjustment cavity, and the pressure sensor is connected to the pressure regulating mechanism. A pressure display is installed on the outer side of the actuator frame, and the pressure display is connected to the pressure sensor. An intake pipe and an outlet pipe are respectively installed through the upper and lower ends on both sides of the valve body, and the intake pipe, the outlet pipe and the connection cavity are connected.
[0006] Preferably, the pressure regulating mechanism includes a valve seat and a valve stem. The valve seat is installed in the middle inside the connection cavity. The valve stem is movably installed through the connection cavity and the adjustment cavity. A valve core is installed at the lower end of the valve stem, and the valve core is snap-fitted with the valve seat.
[0007] Preferably, a pressing plate is installed on the outer side of the rod body of the valve stem located inside the adjustment cavity. The pressing plate is movably installed inside the adjustment cavity. A convex block is installed at one end of the lower surface of the pressing plate, and the convex block is in contact with the pressure sensor.
[0008] Preferably, an extension rod is installed at the upper end of the actuator frame. The upper end of the valve stem movably penetrates and is installed inside the extension rod. A connecting pipe is installed at the upper end of the extension rod. A first threaded hole is provided on the upper surface of the extension rod. A threaded pipe is installed at the lower end of the connecting pipe. The threaded pipe is threadedly installed inside the first threaded hole.
[0009] Preferably, a second threaded hole is provided through the upper end inside the connecting pipe. A threaded rod is threadedly installed inside the second threaded hole. A spring is installed between the lower end of the threaded rod and the valve stem. A cross groove is provided on the upper surface of the threaded rod.
[0010] Preferably, limiting rods are respectively installed on the sides of the threaded rod and the valve stem close to each other. The upper and lower ends of the spring are sleeved and installed on the outer side of the rod body of the limiting rod.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] (1) In the utility model, through the cooperation of the cross groove and an external cross screwdriver, the user can control the threaded rod to move up and down, so that the threaded rod squeezes or loosens the spring, realizing the pressure adjustment of the spring and the valve stem. At the same time, when the valve stem drives the pressing plate to squeeze the pressure sensor, the pressure sensor will display the pressure of the pressing plate through the pressure display, so as to facilitate the user to accurately adjust the pressure of the valve stem and the valve core according to the data of the pressure sensor, which is more convenient to use, reduces the working difficulty of the user, and is more simple.
[0013] (2) In the utility model, the limiting rod is used to position the spring to avoid the spring from shifting during the adjustment process, ensuring the overall stability performance inside the nitrogen release valve and avoiding gas leakage or unstable pressure control. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of a nitrogen release valve of the utility model;
[0015] Figure 2 is a front view structure schematic diagram of a nitrogen release valve of the utility model;
[0016] Figure 3 is a side view structure schematic diagram of a nitrogen release valve of the utility model;
[0017] Figure 4 is a nitrogen release valve of the utility model Figure 3 is a schematic diagram of the sectional structure at A-A of the utility model;
[0018] Figure 5 is a nitrogen release valve of the utility modelFigure 4 Schematic diagram of the enlarged structure at position B in the middle.
[0019] In the figure: 1. Valve body; 101. Connecting cavity; 2. Inlet pipe; 3. Actuating frame; 301. Adjusting cavity; 4. Pressure regulating mechanism; 401. Valve seat; 402. Valve core; 403. Valve rod; 404. Pressure plate; 405. Extension rod; 406. Connecting pipe; 407. First threaded hole; 408. Threaded pipe; 409. Spring; 410. Limit rod; 411. Cross groove; 412. Second threaded hole; 413. Threaded rod; 5. Outlet pipe; 6. Flange; 7. Pressure sensor; 8. Pressure display. Specific implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] As Figures 1 to 5 As shown, an embodiment of the present invention provides a nitrogen release valve, including a valve body 1. A connecting cavity 101 is provided inside the valve body 1. An actuating frame 3 is installed at the upper end of the valve body 1. Flanges 6 are respectively installed at one ends of the valve body 1 and the actuating frame 3 close to each other. The flanges 6 close to each other are connected by bolts. A pressure regulating mechanism 4 is installed between the valve body 1 and the actuating frame 3. An adjusting cavity 301 is provided inside the actuating frame 3. A pressure sensor 7 is installed at the lower end inside the adjusting cavity 301, and the pressure sensor 7 is connected to the pressure regulating mechanism 4. A pressure display 8 is installed outside the actuating frame 3, and the pressure display 8 is connected to the pressure sensor 7. An inlet pipe 2 and an outlet pipe 5 are respectively installed through the upper and lower ends on both sides of the valve body 1. The inlet pipe 2 and the outlet pipe 5 are connected to the connecting cavity 101.
[0022] As Figure 4 And Figure 5As shown in the figure, in another embodiment of the present utility model, the pressure regulating mechanism 4 includes a valve seat 401 and a valve stem 403. The valve seat 401 is installed in the middle of the inside of the connection cavity 101. The valve stem 403 is movably installed through the inside of the connection cavity 101 and the adjustment cavity 301. A valve core 402 is installed at the lower end of the valve stem 403. The valve core 402 and the valve seat 401 are snap-connected. A pressing plate 404 is installed on the outer side of the rod body of the valve stem 403 located inside the adjustment cavity 301. The pressing plate 404 is movably installed inside the adjustment cavity 301. One end of the lower surface of the pressing plate 404 is provided with a convex block, and the convex block is in contact with the pressure sensor 7. An extension rod 405 is installed at the upper end of the actuator frame 3. The upper end of the valve stem 403 is movably installed through the inside of the extension rod 405. A connecting pipe 406 is installed at the upper end of the extension rod 405. A first threaded hole 407 is provided on the upper surface of the extension rod 405. A threaded pipe 408 is installed at the lower end of the connecting pipe 406. The threaded pipe 408 is installed inside the first threaded hole 407 by means of threads. A second threaded hole 412 is provided through the upper end inside the connecting pipe 406. A threaded rod 413 is installed inside the second threaded hole 412 by means of threads. A spring 409 is installed between the lower end of the threaded rod 413 and the valve stem 403. A cross groove 411 is provided on the upper surface of the threaded rod 413. Limiting rods 410 are respectively installed on the sides of the threaded rod 413 and the valve stem 403 close to each other. The upper and lower ends of the spring 409 are sleeved on the outer side of the rod body of the limiting rod 410.
[0023] When the user needs to adjust the pressure of the valve core 402, just take an external cross screwdriver and insert it into the inside of the cross groove 411, and then control the threaded rod 413 to rotate, so that the threaded rod 413 can move up and down through the threads, so as to make the threaded rod 413 cooperate with the valve stem 403 to adjust the extrusion force of the spring 409. At the same time, the spring 409 squeezes the pressure sensor 7 through the valve stem 403 and the pressing plate 404, and then the pressure sensor 7 displays the pressure data through the pressure display 8, so as to facilitate the user to accurately adjust the pressure of the spring 409 and the valve core 402 according to the data. After the adjustment is completed, the gas enters the lower end inside the connection cavity 101 along the air inlet pipe 2. Then, when the pressure of the gas is higher than the pressure of the valve core 402, the gas can push the valve core 402 and the valve stem 403 to move upward, and then the gas can enter the upper end inside the connection cavity 101 through the valve seat 401, and then be discharged through the air outlet pipe 5, which is more convenient;
[0024] The first threaded hole 407 and the threaded pipe 408 are used to assist in installing the connecting pipe 406, so as to facilitate the user to replace the spring 409 inside it later. This can not only reduce the working difficulty of the user, but also avoid the situation that the spring 409 cannot work normally due to elastic changes after long-term use, and further improve the overall stability.
[0025] The working principle of this nitrogen relief valve:
[0026] When in use, first, when the user needs to adjust the pressure of the valve core 402, just take an external cross screwdriver and insert it into the inside of the cross groove 411, and then control the rotation of the threaded rod 413, so that the threaded rod 413 can move up and down through the thread, so that the threaded rod 413 cooperates with the valve stem 403 to adjust the extrusion pressure of the spring 409. At the same time, the spring 409 squeezes the pressure sensor 7 through the valve stem 403 and the pressure plate 404, and then the pressure sensor 7 displays the pressure data through the pressure display 8, so as to facilitate the user to accurately adjust the pressure of the spring 409 and the valve core 402 according to the data. After the adjustment is completed, the gas enters the lower end of the inside of the connection cavity 101 along the air inlet pipe 2. Then, after the pressure of the gas is higher than the pressure of the valve core 402, the gas can push the valve core 402 and the valve stem 403 to move upward, and then the gas can enter the upper end of the inside of the connection cavity 101 through the valve seat 401, and then be discharged through the air outlet pipe 5, which is more convenient.
[0027] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.
Claims
1. A nitrogen release valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a connecting chamber (101) inside. An actuator frame (3) is installed at the upper end of the valve body (1). Flange plates (6) are installed at the ends of the valve body (1) and the actuator frame (3) close to each other. The flange plates (6) close to each other are connected by bolts. A pressure regulating mechanism (4) is installed between the valve body (1) and the actuator frame (3). An adjustment chamber (301) is provided inside the actuator frame (3). A pressure sensor (7) is installed at the lower end of the adjustment chamber (301), and the pressure sensor (7) and the pressure regulating mechanism (4) are connected. A pressure display (8) is installed on the outer side of the actuator frame (3), and the pressure display (8) and the pressure sensor (7) are connected. An air inlet pipe (2) and an air outlet pipe (5) are installed at the upper and lower ends of both sides of the valve body (1), and the air inlet pipe (2) and the air outlet pipe (5) are connected to the connecting chamber (101).
2. A nitrogen release valve according to claim 1, characterized in that: The pressure regulating mechanism (4) comprises a valve seat (401) and a valve stem (403); the valve seat (401) is installed in the middle of the connecting chamber (101); the valve stem (403) is movably installed in the connecting chamber (101) and the adjusting chamber (301); a valve core (402) is installed at the lower end of the valve stem (403); the valve core (402) and the valve seat (401) are snap-fitted and connected.
3. A nitrogen release valve according to claim 2, characterized in that: The valve stem (403) is provided with a pressure plate (404) on the outside of the stem body located inside the adjustment chamber (301); the pressure plate (404) is movably installed inside the adjustment chamber (301); a protrusion is installed on one end of the lower surface of the pressure plate (404), and the protrusion is in contact with the pressure sensor (7).
4. A nitrogen release valve according to claim 2, characterized in that: An extension rod (405) is installed at the upper end of the actuator frame (3), and the upper end of the valve stem (403) is movably installed inside the extension rod (405). A connecting pipe (406) is installed at the upper end of the extension rod (405). A No. 1 threaded hole (407) is provided on the upper surface of the extension rod (405). A threaded pipe (408) is installed at the lower end of the connecting pipe (406), and the threaded pipe (408) is installed inside the No. 1 threaded hole (407) through threads.
5. A nitrogen release valve according to claim 4, characterized in that: A No. 2 threaded hole (412) is provided at the upper end of the interior of the connecting pipe (406), a threaded rod (413) is installed inside the No. 2 threaded hole (412) through a thread, a spring (409) is installed between the lower end of the threaded rod (413) and the valve stem (403), and a cross groove (411) is provided on the upper surface of the threaded rod (413).
6. A nitrogen release valve according to claim 5, characterized in that: A limiting rod (410) is respectively installed on the side where the threaded rod (413) and the valve stem (403) are close to each other, and the upper and lower ends of the spring (409) are sleeved and installed on the outside of the rod body of the limiting rod (410).