A lever-type gas self-closing valve

Abstract

The present invention discloses a lever-type gas self-closing valve. In this solution, a driving mechanism is added to the gas self-closing valve, and a connecting hole is pre-formed in a lifting button. A driving motor drives a gear transmission lifting assembly to synchronously move a connecting rod up and down. The end of the connecting rod extends into the connecting hole and a movable space is reserved in the connecting hole. The movable space ensures the movable stroke of the lifting button under normal function of the gas valve. The connecting rod is driven by the driving motor to move the lifting button upward. When in use, an APP can be built into a mobile phone, and the APP is connected to a control circuit board. The driving motor is controlled by the APP to move the connecting rod up and down, etc., without manually pulling the lifting button, which is convenient for use and troubleshooting.

Description

Technical Field

[0001] The present invention relates to the technical field of valve devices, and in particular to a lever-type gas self-closing valve. Background Art

[0002] A gas self-closing valve is a safety device installed at the end of a gas pipeline that senses gas pressure, automatically closing, and can be manually reset. The valve uses the magnetic force of a permanent magnet to engage and disengage at specific pressures, thereby automatically closing the gas valve in ultra-low pressure, ultra-high pressure, and pressure loss situations. Conventionally, the handle of a self-closing valve requires manual lifting to release gas. Some valves are difficult to install in complex environments, making manual operation difficult. Therefore, automated control of the handle has become a popular demand among many users. Existing self-closing valves cannot meet this need, and improvements are needed. Summary of the Invention

[0003] To solve at least one of the above technical deficiencies, the present invention provides the following technical solutions:

[0004] The present application document discloses a lever-type gas self-closing valve, including a valve body, wherein a fixed seat, an air intake plug, a hand torsion rod, a lifting button, a limiting armature, an upper armature, a permanent magnet, a rubber membrane, a blocking rod, and a reset spring are arranged in the valve body cavity, the rubber membrane separates the upper and lower areas of the valve body cavity, the bottom end of the hand torsion rod passes through the middle hole of the rubber membrane and a permanent magnet is arranged at the bottom end, the top part of the hand torsion rod extends from the top hole of the valve body and a lifting button is arranged, a fixed seat is arranged in the space enclosed by the limiting armature and the wall of the valve body cavity, and an inclined surface is arranged on the surface of the fixed seat facing the air intake cavity of the valve body, the top convex end of the fixed seat extends from the upper hole of the limiting armature and is fixed to the permanent magnet, the air intake plug is arranged in the air intake cavity and is fixed to the end of the blocking rod The end of the blocking rod extends into the space of the fixed seat and cooperates with its inclined surface. A return spring is arranged between the valve body cavity wall and the blocking rod. A driving mechanism is arranged on the top of the valve body. The driving mechanism includes a shell, and a driving motor, a gear transmission lifting component, a control circuit board, and a connecting rod are arranged in the shell. The control circuit board has a wireless transceiver component and the control circuit board is connected to the driving motor. The output end of the driving motor is connected to the gear transmission lifting component, and the lifting end of the gear transmission lifting component is connected to the connecting rod. The other end of the connecting rod extends from the shell and extends into the connecting hole formed on the wall around the button. In the initial state, the end of the connecting rod extends into the connecting hole and the connecting hole reserves movable space above and below the end of the rod.

[0005] In this solution, a driving mechanism is added to the gas self-closing valve, and a connecting hole is pre-formed in the lifting button. The driving motor drives the gear transmission lifting assembly to synchronously move the connecting rod up and down. The end of the connecting rod extends into the connecting hole and a movable space is reserved in the connecting hole. The movable space ensures the movable stroke of the lifting button under normal function of the gas valve. The driving motor drives the connecting rod to move the lifting button upward. When in use, an APP can be built into the mobile phone. The APP is connected to the control circuit board. The driving motor is controlled by the APP to move the connecting rod up and down, etc. There is no need to manually lift the lifting button, which is convenient for use and troubleshooting.

[0006] Furthermore, the gear transmission lifting assembly includes a meshing gear and a rack, the gear is sleeved on the output end of the drive motor, the cavity wall of the shell guides the rack to move, and a connecting rod is radially fixed on the rack.

[0007] This solution uses a rack and pinion lifting connecting rod, which has a simple structure and is easy to assemble.

[0008] Furthermore, a guide seat is formed on the cavity wall of the housing, a guide hole is longitudinally formed in the seat body of the guide seat, and the rack passes through the guide hole. The guide seat guides the rack to move, thereby improving operational stability.

[0009] Furthermore, the shell is assembled into upper and lower parts, and the drive motor is clamped and fixed by the upper and lower split cavity walls. The upper and lower split structure facilitates the assembly of the internal mechanism.

[0010] Furthermore, a sensor is provided in the shell cavity, and the sensor is used to monitor the upper and lower position changes of the lifting button. The sensor is connected to the control circuit board. After the connecting rod moves the lifting button to a predetermined position, the connecting rod is reset. If the sensor cannot detect the lifting button afterwards, it indicates that there is a problem with the valve or pipeline, which helps to troubleshoot.

[0011] Furthermore, an excess flow limiting component is provided in the air inlet cavity of the valve body, in front of the air inlet plug. The excess flow limiting component includes a matching plug and a spring. An angle valve is provided at the air outlet cavity of the valve body. The excess flow limiting component, angle valve and other common components used with self-closing valves close the channel when the gas flow is too fast, and the angle valve controls the on and off of the channel.

[0012] Furthermore, a positioning seat is provided in the air intake cavity of the valve body, the blocking rod passes through the cavity of the positioning seat and a reset spring is provided on the surface of the positioning seat facing the limiting armature, and the other end of the reset spring abuts against the peripheral wall of the blocking rod, thereby increasing the positioning seat to guide the blocking rod, improving the stability of movement, and facilitating the installation of the reset spring.

[0013] Furthermore, the bottom wall of the valve body cavity corresponding to the hand torsion rod is in the shape of a groove and a fixed seat is provided in the groove cavity. The limiting armature is fixed at the groove mouth of the groove body. The cavity wall groove body configuration is connected with the limiting armature to facilitate assembly and forming.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention adds a driving mechanism to the gas self-closing valve, which facilitates the automatic lifting of the button, is easy to use and helps improve the efficiency of troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 1 is a schematic cross-sectional view of the lever-type gas self-closing valve in Example 1;

[0018] Wherein, the accompanying drawings are marked as follows:

[0019] 1. Valve body; 2. Rubber membrane; 3. Upper armature; 4. Twist rod; 5. Lifting button; 6. Permanent magnet; 7. Limit armature; 8. Fixed seat; 9. Inclined surface; 10. Groove cavity; 11. Blocking rod; 12. Return spring; 13. Inlet plug; 14. Positioning seat; 15. Pin; 16. Inlet cavity; 17. Angle valve; 18. Nut; 19. Drive motor; 20. Upper shell; 21. Lower shell; 22. Control circuit board; 23. Gear; 24. Rack; 25. Connecting rod; 26. Guide seat; 27. Guide column; 28. Sensor; 29. Connecting hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, in this example, a lever-type gas self-closing valve includes a valve body 1, with an air inlet cavity 16 and an air outlet cavity formed at the front and rear ends of the valve body 1 cavity respectively, wherein an angle valve 17 is installed at the air outlet cavity to control the on-off, and an excess flow limiting component (not shown) composed of a spring and a blocking member is installed at the air inlet cavity 16 to close the cavity when the gas flow rate exceeds the limit.

[0023] A groove is formed protruding from the center bottom wall of the valve body 1. A fixing seat 8 is positioned within the groove cavity 10 of the groove. A stopper armature 7 is fixed to the top notch of the groove. The stopper armature is groove-shaped and threadedly connected to the surrounding wall of the notch. The top protruding end of the fixing seat 8 extends through a hole formed in the center of the stopper armature 7 and is secured to a permanent magnet 6 via screws. A rubber membrane 2 is installed within the valve body cavity above the permanent magnet 6, dividing the valve cavity into upper and lower layers. Above the rubber membrane 2, an opening is formed in the top wall of the valve body, where a lifting knob 5 is mounted. A torsion bar 4 is fixed to the bottom of the lifting knob 5. The bottom of the torsion bar 4 extends through a hole formed in the center of the rubber membrane 2 and secures the upper armature 3. A nut 18 is threadedly connected to the torsion bar 4 above the rubber membrane 2.

[0024] At the rear of the excess flow limiting component, a rubber-type intake plug 13 is installed in the intake cavity 16. Along the direction of gas flow, a convex ring is formed on the cavity wall at the outlet of the intake cavity facing the intake plug 13. The intake plug and the convex ring cooperate to improve the isolation effect. One end of the blocking rod 11 is fixed to the intake plug 13, and the other end of the blocking rod 11 extends from the intake cavity 16 into the groove cavity where the fixed seat 8 is located in the valve cavity of the valve body 1. The side of the fixed seat 8 facing the blocking rod 11 is an inclined surface 9. In order to improve stability, a positioning seat 14 is fixed at the outlet of the intake cavity 16. The blocking rod 11 passes through the central hole of the positioning seat 14. A radially fixed pin 15 is installed on the blocking rod 11, and a reset spring 12 is installed between the pin 15 and the positioning seat 14. Figure 1 As shown, the return spring 12 is sleeved on the blocking rod.

[0025] In this example, a driving mechanism is installed on the valve body wall on one side of the button 5. The driving mechanism includes a shell, in which a driving motor 19, a gear transmission lifting assembly, a control circuit board 22, and a connecting rod are installed. The control circuit board 22 integrates a wireless transceiver assembly to facilitate docking with a mobile phone, etc. The control circuit board 22 is connected to the driving motor 19.

[0026] The output end of the drive motor 19 is connected to the gear transmission lifting assembly, which includes a meshing gear 23 and a rack 24, wherein the drive motor 19 is installed horizontally and the gear 23 is sleeved on the output end of the drive motor 19, and the rack 24 is vertically placed in the cavity of the shell, and a guide seat 26 is formed at the bottom wall of the cavity of the shell, and a guide hole 1 is longitudinally formed in the guide seat 26. The bottom end of the rack 24 is located in the guide hole 1 of the guide seat 26 and the top end extends from the guide hole 2 formed on the top surface of the shell, cooperating to guide the moving rack, and the gear 23 and the rack 24 are meshed. A connecting rod 25 is radially fixed on the rack 24, and the connecting rod 25 extends from the notch formed in the shell wall and extends into the connecting hole 29 formed on the wall around the button 5. In the initial state (the valve body is not in use), the end of the connecting rod 25 extends into the connecting hole 29 and the connecting hole 29 has a movable space reserved above and below the rod end. This movable space ensures that the connecting rod does not affect the displacement of the button under high pressure and low pressure. In order to improve the movement stability of the button, such as Figure 1As shown, a guide column 27 is formed protruding outward from the top opening of the valve body, and a guide groove is formed corresponding to the lifting button. The guide column extends into the guide groove to guide the movement of the lifting button.

[0027] In this example, the housing is assembled in two parts, one above the other, to facilitate installation of internal components. Multiple mounting posts are formed within the cavity of the upper housing 20. The drive motor 19 is located within the cavity enclosed by the posts and is clamped and pre-positioned by the posts. A bearing is installed on the side wall of the cavity corresponding to the output end of the drive motor 19, and the output end of the drive motor extends into the bearing. A bracket is formed in the cavity wall above the drive motor 19 to secure the control circuit board 22. A protrusion is formed in the cavity wall of the lower housing 21, which cooperates with the mounting posts and bracket to clamp and secure the drive motor. A guide seat 26 is formed in the cavity of the lower housing, and a second guide hole is formed in the top wall of the upper housing.

[0028] In addition, a sensor 28 may be added. The sensor 28 is fixed on the wall of the housing facing the handle to monitor the up and down position changes of the handle. The control circuit board is connected to the sensor.

[0029] When in use, you can use the built-in APP in the mobile phone, which is connected to the control circuit board. The APP controls the drive motor to move the connecting rod upward to lift the lifting button. Under the action of magnetic force, the fixed seat moves upward, and the inclined surface pushes the blocking rod to move the intake plug to open the intake cavity. Then the drive motor drives the connecting rod to move downward and reset, without the need to manually pull the lifting button.

[0030] If overpressure, low pressure or other faults occur, the button moves down, the fixed seat moves down, and the air intake plug blocks the air intake cavity. At this time, the button can be reset through the APP. After the connecting rod is reset, the sensor detects that the button cannot stay in the predetermined position, then it can be determined that there is a problem with the air intake pipe, etc., which helps to quickly troubleshoot the fault.

[0031] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A lever-type gas self-closing valve, comprising a valve body, a fixed seat, an air intake plug, a hand torsion rod, a lifting button, a limiting armature, an upper armature, a permanent magnet, a rubber membrane, a blocking rod, and a return spring are arranged in the valve body cavity, the rubber membrane separates the upper and lower areas of the valve body cavity, the bottom end of the hand torsion rod passes through the middle hole of the rubber membrane and a permanent magnet is arranged at the bottom end, the top of the hand torsion rod extends from the top hole of the valve body and is provided with a lifting button, a fixed seat is arranged in the space surrounded by the limiting armature and the valve body cavity wall, and an inclined surface is arranged on the surface of the fixed seat facing the valve body air intake cavity, the top convex end of the fixed seat extends from the upper hole of the limiting armature and is fixed to the permanent magnet, the air intake plug is arranged in the air intake cavity and is fixed to the end of the blocking rod, the end of the blocking rod extends into the space where the fixed seat is located and cooperates with its inclined surface, and a return spring is arranged between the valve body cavity wall and the blocking rod. A driving mechanism is set on the top of the valve body, and the driving mechanism includes a shell. A driving motor, a gear transmission lifting assembly, a control circuit board, and a connecting rod are set in the shell. The control circuit board has a wireless transceiver assembly and the control circuit board is connected to the driving motor. The output end of the driving motor is connected to the gear transmission lifting assembly. The lifting end of the gear transmission lifting assembly is connected to the connecting rod. The other end of the connecting rod extends from the shell and extends into a connecting hole formed on the wall of the button. In the initial state, the end of the connecting rod extends into the connecting hole and the connecting hole reserves movable space above and below the end of the connecting rod.

2. A lever-type gas self-closing valve according to claim 1, characterized in that: The gear transmission lifting assembly includes a meshing gear and a rack. The gear is sleeved on the output end of the driving motor. The cavity wall of the shell guides the rack to move. A connecting rod is radially fixed on the rack.

3. A lever-type gas self-closing valve according to claim 2, characterized in that: A guide seat is formed on the cavity wall of the shell, a guide hole is longitudinally formed in the seat body of the guide seat, and the rack passes through the guide hole.

4. A lever-type gas self-closing valve according to claim 1, characterized in that: The housing is assembled into upper and lower parts, and the drive motor is clamped and fixed by the upper and lower cavity walls.

5. The lever-type gas self-closing valve according to claim 1, characterized in that: A sensor is arranged in the housing cavity, and the sensor is used to monitor the up and down position changes of the handle, and the sensor is connected to the control circuit board.

6. The lever-type gas self-closing valve according to claim 1, characterized in that: An excess flow limiting component is provided in the air inlet cavity of the valve body and in front of the air inlet plug. The excess flow limiting component includes a matching plug and a spring. An angle valve is provided at the air outlet cavity of the valve body.

7. The lever-type gas self-closing valve according to claim 1, characterized in that: A positioning seat is provided in the air inlet cavity of the valve body, the blocking rod passes through the cavity of the positioning seat and a return spring is provided on the surface of the positioning seat facing the limiting armature, and the other end of the return spring abuts against the peripheral wall of the blocking rod.

8. The lever-type gas self-closing valve according to claim 1, characterized in that: The bottom wall of the valve body cavity corresponding to the hand torsion rod is in the shape of a groove body, and a fixing seat is arranged in the groove cavity, and a limiting armature is fixed at the groove opening of the groove body.

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