Safety gas valve

Abstract

The utility model provides a safety gas valve which comprises a valve body, a gas inlet channel, a middle channel, a gas outlet channel, a lower installation cavity and an upper installation cavity are arranged in the valve body, a ball valve assembly is arranged at the position of the middle channel of the valve body and used for opening and closing circulation of the middle channel and the gas outlet channel, and an electromagnetic valve assembly is arranged in the lower installation cavity and used for opening and closing circulation of the middle channel and the gas outlet channel. The electromagnetic valve assembly is connected with the sensing device through the electric control device, the upper mounting cavity is correspondingly arranged above the lower mounting cavity, and a bouncing valve assembly is arranged in the upper mounting cavity; the gas stove is compact in structure, gas leakage caused by misoperation and accidental flameout and unattended conditions of the gas stove can be avoided through cooperation of the ball valve assembly, the electromagnetic valve assembly, the induction device and the bounce valve assembly, and the gas stove is safer to use.

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, a middle channel, an outlet channel, a lower mounting cavity, and an upper mounting cavity. A ball valve assembly is provided in the middle channel for opening and closing the flow through the middle and outlet channels. A solenoid valve assembly is provided in the lower mounting cavity, and the solenoid valve assembly is connected to a sensing device via an electronic control device. The upper mounting cavity is located above the lower mounting cavity and contains a spring-loaded valve assembly. In the power-off state, the solenoid valve assembly closes the flow through the inlet and middle channels. Pressing the spring-loaded valve assembly passively opens the flow through the inlet and middle channels. When the temperature value detected by the sensing device is higher than a preset temperature threshold, the electronic control device energizes the solenoid valve assembly to automatically open the flow through the inlet and middle channels. When the temperature value detected by the sensing device is not higher than the preset temperature threshold, the solenoid valve assembly is in a power-off state. When the spring-loaded valve assembly is released, it automatically rebounds, restoring the solenoid valve assembly to close the flow through the inlet and middle channels.

[0005] Furthermore, the valve body has an installation port at one end of the middle channel that connects to the air outlet channel, and an installation sleeve at the installation port. A cap is screwed onto the installation port. The ball valve assembly includes a ball valve, a ball valve stem, and a ball valve switch. The ball valve is located inside the installation port. The ball valve stem is sealed to the installation sleeve with a gap, and its lower end is connected to the ball valve. The ball valve switch is fixed to the upper end of the ball valve stem. The ball valve has a first connecting hole corresponding to the rotation direction and a second connecting hole at one end perpendicular to the rotation plane. The second connecting hole communicates with the air outlet channel.

[0006] Furthermore, the ball valve stem sidewall is provided with a plurality of first annular grooves, and a first sealing ring is fitted on the first annular groove.

[0007] Furthermore, the lower mounting cavity is connected to the air intake channel and the upper mounting cavity respectively. The connection between the lower mounting cavity and the upper mounting cavity is a vent hole. The upper mounting cavity is connected to the intermediate channel. The solenoid valve assembly includes a solenoid valve, a closing element, and a first spring. The solenoid valve is fixed in the lower mounting cavity and its output end is connected to the closing element. The first spring is located between the solenoid valve and the closing element. In the power-off state, the closing element blocks the vent hole under the action of the first spring, and the vent hole can be opened by pressing the spring valve assembly to move the closing element down.

[0008] Furthermore, the bounce valve assembly includes a bounce valve core and a second spring. The bounce valve core is in a gap-sealed fit with the upper mounting cavity, and the second spring is disposed between the upper mounting cavity and the bounce valve core for rebounding the bounce valve core.

[0009] Furthermore, the side wall of the pop-up valve core is provided with a stroke groove, the stroke groove includes a vertical groove section parallel to the moving direction of the pop-up valve core and a transverse groove section located on the upper part of the vertical groove section and perpendicular to it. The side wall of the valve body is provided with a second mounting port, and a limiting member that cooperates with the stroke groove is screwed onto the second mounting port.

[0010] Furthermore, the pop-up valve assembly also includes a third spring, which is disposed between the pop-up valve core and the closing element to create a pressing gap between the pop-up valve core and the closing element.

[0011] Furthermore, the sidewall of the spring valve core is provided with a plurality of second annular grooves, and a second sealing ring is fitted on the second annular groove.

[0012] Furthermore, an air outlet connector is screwed onto the end of the air outlet channel away from the intermediate channel of the valve body.

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

[0014] Figure 1 This is a schematic diagram of the structure of a safety gas valve according to this utility model from one direction;

[0015] Figure 2 This is a schematic diagram of the structure of a safety gas valve according to this utility model from another direction;

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

[0017] Figure 4 This is a 3D view of the ball valve involved in this solution;

[0018] Figure 5 This is a 3D view of the spring valve core involved in this solution. Detailed Implementation

[0019] like Figure 1 , Figure 2 As 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 11, an intermediate channel 12, an outlet channel 13, a lower mounting cavity 14, and an upper mounting cavity 15. The upper mounting cavity 15 is correspondingly located at the upper end of the lower mounting cavity 14, and the lower mounting cavity 14 is connected to the inlet channel 11 and the upper mounting cavity 15 respectively. The connection between the lower mounting cavity 14 and the upper mounting cavity 15 is a vent hole 18. The upper mounting cavity 15 is connected to the intermediate channel 12. Gas enters the gas valve and flows out after passing through the inlet channel 11, the lower mounting cavity 14, the vent hole 18, the upper mounting cavity 15, the intermediate channel 12, and the outlet channel 13 respectively.

[0020] Furthermore, such as Figures 1-4 As shown, in this embodiment, the valve body 1 has a ball valve assembly 2 at the intermediate channel 12 for opening and closing the flow between the intermediate channel 12 and the outlet channel 13. Specifically, the valve body 1 has an installation port 16 at one end of the intermediate channel 12 that connects to the outlet channel 13, and an installation sleeve 17 at the installation port 16. A cap 6 is screwed onto the installation port 16. The ball valve assembly 2 includes a ball valve 21, a ball valve stem 22, and a ball valve switch 23. The ball valve 21 is located in the installation port 16. The ball valve stem 22 is clearance-fitted with the installation sleeve 17, and its lower end is connected to the ball valve 21. The ball valve switch 23 is fixed to the upper end of the ball valve stem 22. The valve 21 has a first connecting hole 211 corresponding to the rotation direction and a second connecting hole 212 at one end perpendicular to the rotation plane. The second connecting hole 212 communicates with the air outlet channel 13. The ball valve 21 can be driven to rotate by rotating the ball valve switch 23, so that the first connecting hole 211 is aligned with or not aligned with the intermediate channel 12, thereby realizing the opening and closing of the intermediate channel 12 and the air outlet channel 13. At the same time, the side wall of the ball valve stem 22 has multiple first annular grooves 221, and a first sealing ring 7 is fitted on the first annular grooves 221. The first sealing ring 7 ensures good sealing between the ball valve stem 22 and the mounting sleeve part 17.

[0021] Furthermore, such as Figure 1As shown, in this embodiment, the lower mounting cavity 14 is equipped with a solenoid valve assembly 3. 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 41 installed on the gas stove, used to sense the ignition temperature of the gas stove and transmit the signal to the electronic control device. The upper mounting cavity 15 is equipped with a spring valve assembly 5. In the power-off state, the solenoid valve assembly 3 closes the flow of the air intake channel 11 and the intermediate channel 12. By pressing the spring valve assembly 5, the solenoid valve assembly 3 can passively open the flow of the air intake channel 11 and the intermediate channel 12. 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 flow of the air intake channel 11 and the intermediate channel 12. 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 power-off state. When the spring valve assembly 5 is released, it automatically rebounds, causing the solenoid valve assembly 3 to resume closing the flow of the air intake channel 11 and the intermediate channel 12.

[0022] Specifically, such as Figure 1 As shown, the solenoid valve assembly 3 in this embodiment includes a solenoid valve 31, a closing element 32, and a first spring 33. The solenoid valve 31 is fixed in the lower mounting cavity 14 and its output end is connected to the closing element 32. The first spring 33 is located between the solenoid valve 31 and the closing element 32. In the power-off state, the closing element 32 blocks the vent hole 18 under the action of the first spring 33. The closing element 32 can be moved down to open the vent hole 18 by pressing the spring valve assembly 5. The closing element 32 rebounds under the action of the first spring 33 with a certain rebound time.

[0023] At the same time, such as Figure 1 , Figure 5As shown, the spring valve assembly 5 in this embodiment includes a spring valve core 51, a second spring 52, and a third spring 53. The spring valve core 51 is clearance-fitted with the upper mounting cavity 15 and has a stroke groove 511 and multiple second annular grooves 512 on its side wall. The stroke groove 511 includes a vertical groove section 5111 parallel to the moving direction of the spring valve core 51 and a transverse groove section 5112 located on the upper part of the vertical groove section 5111 and perpendicular to it. The valve body 1 has a second mounting port on its side wall and a limiting member 8 is screwed onto the second mounting port. Pressing the spring valve core 51 causes the limiting member 8 to engage with the stroke groove 511. The limiting member 8 reciprocates along the vertical groove section 5111. When the limiting member 8 moves to the uppermost end of the vertical groove section 5111... When the valve core 51 is rotated until the limiting member 8 is engaged in the annular groove section 5112, the maximum flow gap between the lower mounting cavity 14 and the upper mounting cavity 15 can be limited and maintained when the closing member 32 is passively opened. At the same time, the side wall of the valve core 51 is provided with multiple second annular grooves 512, and a second sealing ring 9 is sleeved on the second annular groove 512. The second sealing ring 9 ensures good sealing between the valve core 51 and the upper mounting cavity 15. The second spring 52 is located between the upper mounting cavity 15 and the valve core 51 and is used to rebound the valve core 51. The third spring 53 is located between the valve core 51 and the closing member 32 and is used to create a pressing gap between the valve core 51 and the closing member 32.

[0024] Furthermore, such as Figure 1 As shown, in this embodiment, the valve body 1 has an air outlet connector 10 screwed to one end of the air outlet channel 13 away from the middle channel 12 for easy connection of the hose.

[0025] In practical use, such as Figures 1-5 As shown: First, rotating the ball valve switch 23 drives the ball valve 21 to rotate, allowing the intermediate channel 12 and the gas outlet channel 13 to flow. Pressing the spring valve core 51 causes the closing element 32 to move down and open the vent hole 18. The spring valve core 51 can be rotated to make the limiting element 8 lock into the annular groove section 5112 and hold it for a period of time before releasing it. Alternatively, the spring valve core 51 can be released and the time for the closing element 32 to rebound can be used to allow a certain amount of gas to flow through the hose between the gas valve and the gas stove. When the gas stove is turned on, when the sensing needle on the sensing device 4... When the temperature value detected by 401 is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be energized, and the closing element 32 is kept in a downward state by electromagnetic force, so that the gas can flow continuously in the gas valve. If the temperature value detected by the sensing needle 401 on the sensing device 4 is not higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be de-energized, and the closing element 32 closes the vent 18 under the action of the first spring 33. When the ball valve switch 23 is not turned to drive the ball valve 21 to rotate, pressing the spring valve core 51 will prevent the gas from flowing.

[0026] 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 inlet channel (11), a middle channel (12), an outlet channel (13), a lower mounting cavity (14), and an upper mounting cavity (15). A ball valve assembly (2) is provided in the middle channel (12) to open and close the flow between the middle channel (12) and the outlet channel (13). A solenoid valve assembly (3) is provided in the lower mounting cavity (14), and the solenoid valve assembly (3) is connected to a sensing device (4) via an electronic control device. The upper mounting cavity (15) is located above the lower mounting cavity (14) and contains a spring valve assembly (5). In the power-off state, the solenoid valve assembly (3) closes the inlet channel (11). The flow of air into the intake passage (11) and the intermediate passage (12) can be achieved by pressing the spring valve assembly (5) so that the solenoid valve assembly (3) passively opens the air intake passage (11) and the intermediate passage (12). 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 air intake passage (11) and the intermediate passage (12). 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 assembly (5) is released, it automatically rebounds so that the solenoid valve assembly (3) resumes closing the air intake passage (11) and the intermediate passage (12).

2. A safety gas valve according to claim 1, characterized in that: The valve body (1) has an installation port (16) at one end of the middle channel (12) and the air outlet channel (13) connected, and an installation sleeve (17) is provided at the installation port (16). A cover (6) is screwed onto the installation port (16). The ball valve assembly (2) includes a ball valve (21), a ball valve stem (22), and a ball valve switch (23). The ball valve (21) is located in the installation port (16). The ball valve stem (22) is sealed to the installation sleeve (17) with a gap and its lower end is connected to the ball valve (21). The ball valve switch (23) is fixed to the upper end of the ball valve stem (22). The ball valve (21) has a first connecting hole (211) corresponding to the rotation direction and a second connecting hole (212) at one end perpendicular to the rotation plane. The second connecting hole (212) is connected to the air outlet channel (13).

3. A safety gas valve according to claim 2, characterized in that: The ball valve stem (22) has a plurality of first annular grooves (221) on its side wall, and a first sealing ring (7) is fitted on the first annular groove (221).

4. A safety gas valve according to claim 1, characterized in that: The lower mounting cavity (14) is connected to the air intake channel (11) and the upper mounting cavity (15) respectively. The connection between the lower mounting cavity (14) and the upper mounting cavity (15) is a vent hole (18). The upper mounting cavity (15) is connected to the intermediate channel (12). The solenoid valve assembly (3) includes a solenoid valve (31), a closing element (32), and a first spring (33). The solenoid valve (31) is fixed in the lower mounting cavity (14) and its output end is connected to the closing element (32). The first spring (33) is located between the solenoid valve (31) and the closing element (32). In the power-off state, the closing element (32) blocks the vent hole (18) under the action of the first spring (33), and the closing element (32) can be moved down to open the vent hole (18) by pressing the spring valve assembly (5).

5. A safety gas valve according to claim 4, characterized in that: The spring valve assembly (5) includes a spring valve core (51) and a second spring (52). The spring valve core (51) is in a gap-sealed fit with the upper mounting cavity (15). The second spring (52) is located between the upper mounting cavity (15) and the spring valve core (51) and is used to spring back the spring valve core (51).

6. A safety gas valve according to claim 5, characterized in that: The side wall of the spring valve core (51) is provided with a stroke groove (511). The stroke groove (511) includes a vertical groove section (5111) parallel to the moving direction of the spring valve core (51) and a transverse groove section (5112) located on the upper part of the vertical groove section (5111) and perpendicular to it. The side wall of the valve body (1) is provided with a second mounting port. A limiting member (8) that cooperates with the stroke groove (511) is screwed onto the second mounting port.

7. A safety gas valve according to claim 5, characterized in that: The spring valve assembly (5) further includes a third spring (53) disposed between the spring valve core (51) and the closing element (32) to create a pressing gap between the spring valve core (51) and the closing element (32).

8. A safety gas valve according to claim 5, 6, or 7, characterized in that: The side wall of the spring valve core (51) is provided with a plurality of second annular grooves (512), and a second sealing ring (9) is provided on the second annular groove (512).

9. A safety gas valve according to claim 1, characterized in that: The valve body (1) has an air outlet connector (10) screwed onto one end of the air outlet channel (13) away from the middle channel (12).

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