Safety gas valve

Abstract

The utility model provides a safety gas valve which comprises a valve body, a gas inlet channel, a gas outlet channel, a lower installation cavity and an upper installation cavity are arranged in the valve body, a ball valve is arranged in the gas outlet channel, an electromagnetic valve assembly is arranged in the lower installation cavity, the electromagnetic valve assembly is connected with an induction device through an electric control device, and the induction device is connected with the ball valve. The upper mounting cavity is correspondingly arranged above the lower mounting cavity, a valve rod connected with the ball valve is in clearance sealing connection in the upper mounting cavity, a bouncing valve element assembly is arranged in the valve rod, and the lower end of the bouncing valve element assembly penetrates out of the ball valve and is arranged above the electromagnetic valve assembly; the gas stove is reasonable and compact in structure, circulation of the ball valve and the gas outlet channel is controlled by rotating the ball valve through the valve rod, circulation of the ball valve and the gas inlet channel is controlled through cooperation of the electromagnetic valve assembly, the induction device and the bouncing valve element assembly, gas leakage caused by misoperation under the condition that the gas stove is shut down accidentally and is unattended can be avoided, and the safety of the gas stove is improved. The use is safer.

Description

Technical Field

[0001] This utility model relates to a safety gas valve. Background Technology

[0002] Gas valves are safety devices in gas pipeline projects, used to cut off, connect, and regulate gas in the pipeline, possessing good control characteristics and sealing performance. However, current gas valves use only a single valve core for opening and closing, making them prone to misoperation. Furthermore, if a gas stove is accidentally extinguished and left unattended, gas will continue to flow, causing gas leaks and posing a significant safety hazard. Therefore, current technology requires improvement and development. Summary of the Invention

[0003] To address the shortcomings mentioned above, this utility model provides a safe gas valve.

[0004] To achieve the above objectives, this utility model provides a safety gas valve, including a valve body. The valve body has an inlet channel, an outlet channel, a lower mounting cavity, and an upper mounting cavity. A ball valve is provided in the outlet channel. A solenoid valve assembly is provided in the lower mounting cavity. The solenoid valve assembly is connected to a sensing device via an electronic control device. The upper mounting cavity is correspondingly located above the lower mounting cavity and has a valve stem connected to the ball valve with an internal gap seal. A spring valve core assembly is provided in the valve stem. The lower end of the spring valve core assembly extends out of the ball valve and is located above the solenoid valve assembly. In the power-off state, the solenoid valve assembly closes the air intake passage and the ball valve. Pressing the spring valve core assembly passively opens the air intake passage and the ball valve. When the temperature value detected by the sensor is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly to automatically open the air intake passage and the ball valve. When the temperature value detected by the sensor is not higher than the preset temperature threshold, the solenoid valve assembly is in the power-off state. When the spring valve core assembly is released, it automatically rebounds, allowing the solenoid valve assembly to restore the air intake passage and the ball valve.

[0005] Furthermore, the lower mounting cavity is connected to the air inlet channel and the air outlet channel respectively. The connection between the lower mounting cavity and the air outlet channel is a vent hole one. The air outlet channel is connected to the upper mounting cavity. The ball valve has a vent hole two in the rotation direction and a vent hole three at its lower end perpendicular to the rotation plane. The solenoid valve assembly includes a solenoid valve, a closing element, and a spring one. The solenoid valve is fixed in the lower mounting cavity and its output end is connected to the closing element. The spring one is located between the solenoid valve and the closing element. In the power-off state, the closing element blocks the vent hole one under the action of the spring one. The closing element can be moved down to open the vent hole one by pressing the spring valve core assembly, thereby connecting the lower mounting cavity and the vent hole three.

[0006] Furthermore, the spring valve core assembly includes a valve core rod and a second spring. The valve core rod and the valve stem are in a gap-sealed fit. The upper end of the valve core rod is provided with a convex ring portion, and the lower end diameter is smaller than the diameter of the vent hole three. The second spring is located between the valve stem and the convex ring portion and is used to spring back the valve core rod.

[0007] Furthermore, the valve core rod sidewall is provided with at least one annular groove, and a sealing ring is fitted on the annular groove.

[0008] Furthermore, a valve cover is fixedly provided at the upper end of the valve body, and a connecting rod is fitted inside the valve cover with a clearance. A handwheel is engaged at the upper end of the connecting rod, and the lower end is engaged with the valve stem and can move axially along the engagement position. The connecting rod, valve stem, and ball valve can be rotated by rotating the handwheel, and the connecting rod and the spring valve core assembly can be subjected to force by pressing the handwheel.

[0009] Furthermore, the upper end of the valve stem is provided with a sliding groove along the axis, and the side wall of the connecting rod is provided with a snap-fit ​​block that cooperates with the sliding groove.

[0010] Furthermore, the valve body is provided with an installation port and a limiting member is screwed onto the installation port, and the valve stem side wall is provided with a rotating groove corresponding to the limiting member.

[0011] Furthermore, at least one annular groove II is provided on the side wall of the valve stem, and a sealing ring II is fitted on the annular groove II.

[0012] Furthermore, an air outlet connector is screwed onto the valve body at the opening end of the air outlet channel.

[0013] The advantages of this utility model compared to the prior art are as follows: This utility model has a reasonable and compact structure. The ball valve and the gas outlet passage are controlled by rotating the valve stem. The ball valve and the gas inlet passage are controlled by the cooperation of the solenoid valve assembly, the sensing device, and the spring valve core assembly. This can prevent gas leakage caused by accidental flameout and lack of supervision of the gas stove, as well as by misoperation, making it safer to use. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a safety gas valve according to the present invention;

[0015] Figure 2 This is a 3D view of the gas valve involved in this solution;

[0016] Figure 3 This is a 3D view of the valve stem involved in this solution;

[0017] Figure 4 This is a 3D view of the connecting rods involved in this solution. Detailed Implementation

[0018] like Figure 1 , Figure 2As shown in the figure, a safety gas valve according to an embodiment of the present invention includes a valve body 1. The valve body 1 is provided with an inlet channel 101, an outlet channel 102, a lower mounting cavity 103, and an upper mounting cavity 104. The lower mounting cavity 103 is connected to the inlet channel 101 and the outlet channel 102 respectively. The connection between the lower mounting cavity 103 and the outlet channel 102 is a vent hole 105. The outlet channel 102 is connected to the upper mounting cavity 104. The upper mounting cavity 104 is correspondingly located above the lower mounting cavity 103. Gas enters the gas valve and flows out after passing through the inlet channel 101, the lower mounting cavity 103, the vent hole 105, and the outlet channel 102 respectively.

[0019] Furthermore, such as Figure 1 As shown, in this embodiment, a ball valve 2 is provided in the gas outlet channel 102, and a solenoid valve assembly 3 is provided in the lower mounting cavity 103. The solenoid valve assembly 3 is connected to the sensing device 4 through an electronic control device. The sensing device 4 includes a sensing needle 401 on the gas stove, used to sense the ignition temperature of the gas stove and transmit the signal to the electronic control device. A valve stem 5 is gap-sealed in the upper mounting cavity 104. The lower end of the valve stem 5 is engaged with the ball valve 2 and has a spring valve core assembly 6 inside. The lower end of the spring valve core assembly 6 extends out of the ball valve 2 and is located above the solenoid valve assembly 3. The solenoid valve assembly 3 in the power-off state... The intake passage 101 and ball valve 2 are closed, and the solenoid valve assembly 3 is passively opened by pressing the spring valve core assembly 6. When the temperature value detected by the sensing device 4 is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be energized and automatically open the intake passage 101 and ball valve 2. When the temperature value detected by the sensing device 4 is not higher than the preset temperature threshold, the solenoid valve assembly 3 is de-energized. When the spring valve core assembly 6 is released, it automatically rebounds, causing the solenoid valve assembly 3 to resume closing the intake passage 101 and ball valve 2.

[0020] Furthermore, such as Figure 1 As shown, in this embodiment, the ball valve 2 has a second vent 201 in the rotation direction and a third vent 202 at its lower end perpendicular to the rotation plane. The second vent 201 and the third vent 202 are connected. The valve stem 5 drives the ball valve 2 to rotate, thereby opening and closing the air outlet channel 102. At the same time, the solenoid valve assembly 3 includes a solenoid valve 7, a closing element 8, and a spring 9. The solenoid valve 7 is fixed in the lower mounting cavity 103 and its output end is connected to the closing element 8. The spring 9 is located between the solenoid valve 7 and the closing element 8. In the power-off state, the closing element 8 blocks the first vent 105 under the action of the spring 9. The closing element 8 can be moved down to open the first vent 105 by pressing the spring valve core assembly 6, thereby making the lower mounting cavity 103 and the third vent 202 connected.

[0021] Furthermore, such as Figure 1As shown, the spring valve core assembly 6 in this embodiment includes a valve core rod 10 and a spring 2 11. The valve core rod 10 and the valve stem 5 are in a gap-sealed fit. The upper end of the valve core rod 10 is provided with a convex ring portion 1001, and the lower end diameter is smaller than the diameter of the vent hole 3 202. After the valve core rod 10 passes through the ball valve 2, there is a flow gap between it and the vent hole 202. The spring 2 11 is provided between the valve stem 5 and the convex ring portion 1001 for rebounding the valve core rod 10. The side wall of the valve core rod 10 is provided with at least one annular groove 1002. A sealing ring 12 is sleeved on the annular groove 1002. The sealing ring 12 can prevent gas from leaking out from between the valve core rod 10 and the valve stem 5.

[0022] Furthermore, such as Figure 1 , Figure 3 , Figure 4 As shown, in this embodiment, a valve cover 13 is fixedly provided on the upper end of the valve body 1. A connecting rod 14 is fitted inside the valve cover 13 with a clearance. A handwheel 15 is snapped onto the upper end of the connecting rod 14, and a snap-fit ​​block 1401 is provided on the lower end of the side wall. A sliding groove 501 is provided on the upper end of the valve stem 5 along the axis. The connecting rod 14 is snapped onto the sliding groove 501 through the snap-fit ​​block 1401 and can move axially along the snap-fit ​​position. The connecting rod 14, valve stem 5 and ball valve 2 can be rotated by rotating the handwheel 15. The connecting rod 14 and the spring valve core assembly 6 can be subjected to force by pressing the handwheel 15. The structure is compact and more convenient to use.

[0023] Furthermore, such as Figures 1-4 As shown, in this embodiment, the valve body 1 is provided with an installation port, and a limiting member 16 is screwed onto the installation port. The valve stem 5 has a rotating groove 502 on its side wall. The limiting member 16 cooperates with the rotating groove 502 to limit the rotation range of the valve stem 5. The valve stem 5 has at least one annular groove 503 on its side wall. A sealing ring 17 is fitted on the annular groove 503. The sealing ring 17 can prevent gas from leaking out between the upper installation cavity 104 and the valve stem 5. At the same time, a gas outlet connector 18 is screwed onto the opening end of the gas outlet channel 102 of the valve body 1 for easy connection of the hose.

[0024] In practical use, such as Figure 1As shown: First, turn the handwheel 15 to drive the ball valve 2 to rotate and open the gas outlet channel 102. Press the handwheel 15 to drive the closing part 8 to move down and open the vent hole 105, and the gas begins to flow. Release the handwheel 15. Due to the certain time for the closing part 19 to rebound, there is a certain amount of gas left in the hose between the gas valve and the gas stove. Turn on the ignition device on the gas stove. When the temperature value detected by the sensing needle 401 on the sensing device 4 is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be energized. The closing part 8 is kept in the downward state by electromagnetic force, and the gas can flow continuously in the gas valve. If the temperature value detected by the sensing needle on the sensing device 7 is not higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be de-energized. When the handwheel 15 is not turned to drive the ball valve 2 to rotate, pressing the handwheel 12 will not allow the gas to flow.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safety gas valve, characterized in that: The system includes a valve body (1), which has an air inlet channel (101), an air outlet channel (102), a lower mounting cavity (103), and an upper mounting cavity (104). A ball valve (2) is located in the air outlet channel (102). A solenoid valve assembly (3) is located in the lower mounting cavity (103). The solenoid valve assembly (3) is connected to a sensing device (4) via an electronic control device. The upper mounting cavity (104) is located above the lower mounting cavity (103) and has a valve stem (5) connected to the ball valve (2) with a sealed internal gap. A spring valve core assembly (6) is located inside the valve stem (5). The lower end of the spring valve core assembly (6) extends out of the ball valve (2) and is located above the solenoid valve assembly (3). In the electrically powered state, the solenoid valve assembly (3) closes the air intake channel (101) and the ball valve (2) and passively opens the air intake channel (101) and the ball valve (2) by pressing the spring valve core assembly (6). When the temperature value detected by the sensing device (4) is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly (3) to be powered on and automatically open the air intake channel (101) and the ball valve (2). When the temperature value detected by the sensing device (4) is not higher than the preset temperature threshold, the solenoid valve assembly (3) is in the de-energized state. When the spring valve core assembly (6) is released, it automatically rebounds and the solenoid valve assembly (3) resumes closing the air intake channel (101) and the ball valve (2).

2. A safety gas valve according to claim 1, characterized in that: The lower mounting cavity (103) is connected to the air inlet channel (101) and the air outlet channel (102) respectively. The connection between the lower mounting cavity (103) and the air outlet channel (102) is a vent hole one (105). The air outlet channel (102) is connected to the upper mounting cavity (104). The ball valve (2) is provided with a vent hole two (201) in the rotation direction and a vent hole three (202) at the lower end perpendicular to the rotation plane. The solenoid valve assembly (3) includes a solenoid valve (7) and a closing element (8). Spring 1 (9), the solenoid valve (7) is fixed in the lower mounting cavity (103) and its output end is connected to the closing member (8). Spring 1 (9) is located between the solenoid valve (7) and the closing member (8). In the power-off state, the closing member (8) blocks the vent hole 1 (105) under the action of spring 1 (9), and the closing member (8) can be moved down to open the vent hole 1 (105) by pressing the spring valve core assembly (6), thereby making the lower mounting cavity (103) and the vent hole 3 (202) communicate.

3. A safety gas valve according to claim 2, characterized in that: The spring valve core assembly (6) includes a valve core rod (10) and a second spring (11). The valve core rod (10) is in a gap-sealed fit with the valve rod (5). The upper end of the valve core rod (10) is provided with a convex ring (1001), and the lower end diameter is smaller than the diameter of the third vent hole (202). The second spring (11) is located between the valve rod (5) and the convex ring (1001) and is used to spring back the valve core rod (10).

4. A safety gas valve according to claim 3, characterized in that: The valve core rod (10) has at least one annular groove (1002) on its side wall, and a sealing ring (12) is fitted on the annular groove (1002).

5. A safety gas valve according to claim 1, characterized in that: The valve body (1) is fixed with a valve cover (13) at the upper end. A connecting rod (14) is fitted inside the valve cover (13) with a clearance. A handwheel (15) is engaged at the upper end of the connecting rod (14), and the lower end is engaged with the valve stem (5) and can move axially along the engagement position. The connecting rod (14), valve stem (5), and ball valve (2) can be rotated by rotating the handwheel (15). The connecting rod (14) and the spring valve core assembly (6) can be subjected to force by pressing the handwheel (15).

6. A safety gas valve according to claim 5, characterized in that: The upper end of the valve stem (5) is provided with a sliding groove (501) along the axis, and the side wall of the connecting rod (14) is provided with a snap-fit ​​block (1401) that cooperates with the sliding groove (501).

7. A safety gas valve according to claim 1, characterized in that: The valve body (1) is provided with an installation port and a limiting member (16) is screwed onto the installation port. The valve stem (5) is provided with a rotating groove (502) on the side wall corresponding to the limiting member (16).

8. A safety gas valve according to any one of claims 1 to 7, characterized in that: At least one annular groove 2 (503) is provided on the side wall of the valve stem (5), and a sealing ring 2 (17) is fitted on the annular groove 2 (503).

9. A safety gas valve according to claim 1, characterized in that: The valve body (1) is screwed with an air outlet connector (18) at the opening end of the air outlet channel (102).

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