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 assembly is arranged at the gas outlet channel of the valve body, 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 electric control device. The upper mounting cavity is correspondingly arranged above the lower mounting cavity, and a bounce valve assembly is arranged in the upper mounting cavity; through cooperation of the ball valve assembly, the electromagnetic valve assembly, the induction device and the bounce valve assembly, gas leakage caused by misoperation and accidental flameout and unattended conditions of the gas cooker can be avoided, and the gas cooker 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, an outlet channel, a lower mounting cavity, and an upper mounting cavity. The valve body has a ball valve assembly at the outlet channel, and a solenoid valve assembly 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 located above the lower mounting cavity and contains a spring valve assembly. In the power-off state, the solenoid valve assembly closes the flow of the inlet and outlet channels. Pressing the spring valve assembly passively opens the flow of the inlet and outlet channels. When the temperature value detected by the sensing device is higher than a preset temperature threshold, the electronic control device controls the solenoid valve assembly to automatically open the flow of the inlet and outlet 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 valve assembly is released, it automatically rebounds, allowing the solenoid valve assembly to restore the closure of the inlet and outlet channels.

[0005] Furthermore, the lower mounting cavity is connected to the air inlet 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 air outlet 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 de-energized 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.

[0006] 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.

[0007] Furthermore, the side wall of the pop-up valve core is provided with a stroke groove, the stroke groove including a vertical groove section parallel to the moving direction of the pop-up valve core and an annular retaining groove section provided 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.

[0008] 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.

[0009] Furthermore, the sidewall of the spring valve core is provided with a plurality of first annular grooves, and a first sealing ring is fitted on the first annular groove.

[0010] Furthermore, the valve body has an air outlet at the open end of the air outlet channel and an installation sleeve at the air outlet. The ball valve assembly includes a ball valve, a ball valve stem, and a ball valve handwheel. The ball valve is located inside the air outlet. The ball valve stem is in a clearance-sealed fit with the installation sleeve and its lower end is connected to the ball valve. The ball valve handwheel is fixed to the upper end of the ball valve stem.

[0011] Furthermore, the ball valve stem sidewall 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 threaded onto the air outlet.

[0013] The advantages of this utility model compared to the prior art are as follows: By combining the ball valve assembly, solenoid valve assembly, sensing device, and pop-up valve assembly, this utility model can prevent gas leaks 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 the present invention;

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

[0016] Figure 3 This is a 3D view of the spring valve core involved in this solution. Detailed Implementation

[0017] 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 both the inlet channel 101 and the upper mounting cavity 104. The upper mounting cavity 104 is located above the lower mounting cavity 103. The connection between the lower mounting cavity 103 and the upper mounting cavity 104 is a vent hole 105. The upper mounting cavity 104 is connected to the outlet channel 102. Gas enters the gas valve and flows out after passing through the inlet channel 101, the lower mounting cavity 103, the vent hole 105, the upper mounting cavity 104, and the outlet channel 102.

[0018] Furthermore, such as Figure 1 As shown, in this embodiment, the valve body 1 is provided with a ball valve assembly 2 at the air outlet channel 102 for opening and closing the air outlet channel; specifically, the opening end of the valve body 1 at the air outlet channel 102 is an air outlet 1021, and an installation sleeve portion 1022 is provided at the air outlet 1021. The ball valve assembly 2 includes a ball valve 201, a ball valve stem 202, and a ball valve handwheel 203. The ball valve 201 is located inside the air outlet 1021, and the ball valve stem 202 is clearance-fitted with the installation sleeve portion 1022, and its lower end is connected to the ball valve 201. 1. Connection: The ball valve stem 202 has multiple second annular grooves 2021 on its side wall. A second sealing ring 8 is fitted on the second annular groove 2021. The second sealing ring 8 ensures good airtightness between the ball valve stem 202 and the mounting sleeve 1022. The ball valve handwheel 203 is fixed to the upper end of the ball valve stem 202. The ball valve 201 can be rotated to open and close the air outlet channel by rotating the ball valve handwheel 203. At the same time, an air outlet connector 9 is threaded on the air outlet 1021 for easy connection of a hose.

[0019] Furthermore, such as Figure 1 , Figure 2 As shown, in this embodiment, the lower mounting cavity 103 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 401 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 104 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 101 and the air outlet channel 102. By pressing the spring valve assembly 5, the solenoid valve assembly 3 can passively open the flow of the air intake channel 101 and the air outlet channel 102. 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 101 and the air outlet channel 102. 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 101 and the air outlet channel 102.

[0020] Specifically, such as Figure 1 , Figure 2 As shown, the solenoid valve assembly 3 in this embodiment includes a solenoid valve 301, a closing element 302, and a first spring 303. The solenoid valve 301 is fixed in the lower mounting cavity 103 and its output end is connected to the closing element 302. The first spring 303 is located between the solenoid valve 301 and the closing element 302. In the power-off state, the closing element 302 blocks the vent hole 105 under the action of the first spring 303. The closing element 302 can be moved down to open the vent hole 105 by pressing the spring valve assembly 5. The closing element 302 rebounds under the action of the first spring 303 with a certain rebound time.

[0021] At the same time, such as Figures 1-3 As shown, the spring valve assembly 5 in this embodiment includes a spring valve core 501, a second spring 502, and a third spring 503. The spring valve core 501 is clearance-fitted with the upper mounting cavity 104 and has a stroke groove 5011 and a plurality of first annular grooves 5012 on its side wall. The stroke groove 5011 includes a vertical groove section 5011-1 parallel to the moving direction of the spring valve core 501 and an annular retaining groove section 5011-2 located on the upper section of the vertical groove section 5011-1 and perpendicular to it. The valve body 1 has a second mounting port on its side wall and a limiting member 6 is screwed onto the second mounting port. Pressing the spring valve core 501 causes the limiting member 6 to engage with the stroke groove 5011. The limiting member 6 can reciprocate along the vertical groove section 5011-1. When the valve core 501 is moved to the uppermost end of the vertical groove section 5011-1, the valve core 501 can be rotated until the limiting member 6 is locked into the annular groove section 5011-2. At this time, the maximum flow gap between the upper mounting cavity 14 and the lower mounting cavity 13 passively opened by the closing member 302 can be limited and maintained. At the same time, a first sealing ring 7 is sleeved on the first annular groove 5012. The setting of the first sealing ring 7 makes the airtightness between the valve core 501 and the upper mounting cavity 104 good. The second spring 502 is set between the upper mounting cavity 104 and the valve core 501 for rebounding the valve core 501. The third spring 503 is set between the valve core 501 and the closing member 302 for creating a pressing gap between the valve core 501 and the closing member 302.

[0022] In practical use, such as Figures 1-3As shown: First, rotate the ball valve handwheel 203 to drive the ball valve 201 to rotate and open the gas outlet passage 102. Press the spring valve core 501 to cause the closing element 302 to move down and open the vent hole 105. The spring valve core 501 can be rotated to make the limiting element 6 lock into the annular groove section 5011-2 and hold it for a period of time before releasing it. Alternatively, the spring valve core 501 can be released and the time of the closing element 302's 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 401 on the sensing device 4 detects... When the temperature value is higher than the preset temperature threshold, the electronic control device controls the solenoid valve assembly 3 to be energized, and the closing element 302 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 302 blocks the vent hole 105 under the action of the first spring 303. When the ball valve handwheel 203 is not turned to drive the ball valve 201 to rotate and open the gas outlet passage 102, pressing the spring valve core 501 will prevent the gas from flowing.

[0023] 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 assembly (2) is provided at the air outlet channel (102) of the valve body (1), and a solenoid valve assembly (3) is provided in the lower mounting cavity (103). The solenoid valve assembly (3) is connected to a sensing device (4) through an electronic control device. The upper mounting cavity (104) is located above the lower mounting cavity (103) and has a spring valve assembly (5) inside. When the power is off, the solenoid valve assembly (3) closes the flow of the air inlet channel (101) and the air outlet channel (102). The solenoid valve assembly (3) can be passively opened by pressing the spring valve assembly (5) to allow the air intake channel (101) and the air outlet channel (102) to flow. 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 channel (101) and the air outlet channel (102) to flow. 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 to allow the solenoid valve assembly (3) to resume closing the air intake channel (101) and the air outlet channel (102) to flow.

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 upper mounting cavity (104) respectively. The connection between the lower mounting cavity (103) and the upper mounting cavity (104) is a vent hole (105). The upper mounting cavity (104) is connected to the air outlet channel (102). The solenoid valve assembly (3) includes a solenoid valve (301), a closing element (302), and a first spring (303). The solenoid valve (301) is fixed in the lower mounting cavity (103) and its output end is connected to the closing element (302). The first spring (303) is located between the solenoid valve (301) and the closing element (302). In the power-off state, the closing element (302) blocks the vent hole (105) under the action of the first spring (303), and the closing element (302) can be moved down to open the vent hole (105) by pressing the spring valve assembly (5).

3. A safety gas valve according to claim 2, characterized in that: The spring valve assembly (5) includes a spring valve core (501) and a second spring (502). The spring valve core (501) is in a gap-sealed fit with the upper mounting cavity (104). The second spring (502) is located between the upper mounting cavity (104) and the spring valve core (501) and is used to spring back the spring valve core (501).

4. A safety gas valve according to claim 3, characterized in that: The side wall of the spring valve core (501) is provided with a stroke groove (5011). The stroke groove (5011) includes a vertical groove section (5011-1) parallel to the moving direction of the spring valve core (501) and an annular groove section (5011-2) located on the upper part of the vertical groove section (5011-1) and perpendicular to it. The side wall of the valve body (1) is provided with a second mounting port and a limiting member (6) that cooperates with the stroke groove (5011) is screwed onto the second mounting port.

5. A safety gas valve according to claim 3, characterized in that: The spring valve assembly (5) further includes a third spring (503), which is disposed between the spring valve core (501) and the closing member (302) to create a pressing gap between the spring valve core (501) and the closing member (302).

6. A safety gas valve according to claim 3, 4, or 5, characterized in that: The side wall of the spring valve core (501) is provided with a plurality of first annular grooves (5012), and a first sealing ring (7) is fitted on the first annular groove (5012).

7. A safety gas valve according to claim 1, characterized in that: The valve body (1) has an air outlet (1021) at the opening end of the air outlet channel (102) and an installation sleeve (1022) at the air outlet (1021). The ball valve assembly (2) includes a ball valve (201), a ball valve stem (202), and a ball valve handwheel (203). The ball valve (201) is located inside the air outlet (1021). The ball valve stem (202) is in a clearance-sealed fit with the installation sleeve (1022) and its lower end is connected to the ball valve (201). The ball valve handwheel (203) is fixed on the upper end of the ball valve stem (202).

8. A safety gas valve according to claim 7, characterized in that: The ball valve stem (202) has a plurality of second annular grooves (2021) on its side wall, and a second sealing ring (8) is fitted on the second annular groove (2021).

9. A safety gas valve according to claim 7 or 8, characterized in that: An air outlet connector (9) is threaded onto the air outlet (1021).

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