Explosion-proof push rod valve for normal open fire first

Abstract

The utility model discloses a normal open fire first explosion-proof push rod valve which comprises a valve body, an electromagnetic valve and an ejector rod are arranged in the valve body, the valve body is provided with an air inlet, a normal open fire outlet and a main fire outlet, the air inlet is communicated with the normal open fire outlet and the main fire outlet, the normal open fire outlet is arranged at the position close to the electromagnetic valve, and the ejector rod is arranged at the position close to the electromagnetic valve. An ejector pin and a sealing part are arranged at the end of the ejector rod, the ejector pin is arranged at the end of the sealing part, and the outer diameter of the sealing part is larger than that of the ejector pin. According to the gas appliance, the ejector rod is matched with the normal open fire outlet and the main fire outlet, so that normal open fire can be ignited firstly and then main fire is ignited during ignition, the sequence from small fire to big fire is realized, the phenomenon of detonation is prevented, and the gas appliance is safer to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas appliance, concretely relates to a normal pilot flame first ignition explosion-proof push rod valve. BACKGROUND

[0002] The push rod valve of the gas appliance is a key component used in the gas equipment, which controls the flow and closing of the gas by pushing the valve rod, the existing push rod valve's gas enters the normal pilot flame outlet and the main fire outlet at the same time, because of the large gas flow in the valve body, the electromagnetic valve will appear deflagration when igniting the gas, the deflagration will cause serious damage to the gas equipment itself, and also can endanger the life safety and property safety of the surrounding personnel. SUMMARY

[0003] The utility model solves the existing push rod valve of gas appliance can appear deflagration.

[0004] In order to realize the above-mentioned purpose, the utility model provides a normal pilot flame first ignition explosion-proof push rod valve, including the valve body, the valve body includes the electromagnetic valve and the jackscrew, the valve body is equipped with the gas inlet, the normal pilot flame outlet and the main fire outlet, the gas inlet and the normal pilot flame outlet and the main fire outlet are mutually through, the normal pilot flame outlet is located close to the position of the electromagnetic valve, the jackscrew end is equipped with the thimble and the sealing part, the thimble is equipped in the end of the sealing part, the outer diameter of the sealing part is greater than the outer diameter of the thimble.

[0005] Further, the sealing ring is arranged at the position of the main fire outlet, and the thimble of the jackscrew penetrates the sealing ring and abuts against the sealing ring.

[0006] Further, the jackscrew is provided with a push rod spring and a push rod at the other end, the push rod spring is sleeved on the outer side of the jackscrew, one end of the push rod is sleeved on the outer side of the push rod spring and fixedly connected with the jackscrew, and the other end extends to the outside of the valve body.

[0007] Further, the two ends of the push rod spring abut against the gaskets on the two sides of the jackscrew, and the push rod can be automatically reset after being pressed by the push rod spring.

[0008] Further, the valve body is provided with a nut at the end of the electromagnetic valve, and the electromagnetic valve can be fixedly installed in the valve body through the nut.

[0009] The utility model discloses the technical effect and advantage: through the cooperation between the jackscrew and the normal pilot flame outlet and the main fire outlet, the normal pilot flame can be ignited first and then the main fire is ignited when igniting, the sequence from small fire to big fire is realized, the phenomenon of preventing deflagration occurs, and the use of the gas appliance is more safe. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the perspective drawing of the utility model;

[0011] Figure 2 is an exploded view of the utility model;

[0012] Figure 3 is a top view of the utility model;

[0013] Figure 4 is Figure 3 A-A sectional view of the utility model;

[0014] Figure 5 is a schematic view of the ejector rod provided with a push rod spring structure of the utility model.

[0015] Reference signs: valve body 10; electromagnetic valve 20; ejector rod 30; air inlet 11; constant light outlet 12; main fire outlet 13; ejector pin 31; sealing part 32; sealing ring 14; push rod spring 33; push rod 34; gasket 35; nut 15. DETAILED DESCRIPTION

[0016] As Figures 1 to 5 described, a constant light first ignition explosion-proof push rod valve, comprising a valve body 10, the valve body 10 comprising an electromagnetic valve 20 and an ejector rod 30, the valve body 10 being provided with an air inlet 11, a constant light outlet 12 and a main fire outlet 13, the air inlet 11 being in communication with the constant light outlet 12 and the main fire outlet 13, the constant light outlet 12 being located close to the electromagnetic valve 20, the ejector rod 30 being provided with an ejector pin 31 and a sealing part 32 at the end thereof, the ejector pin 31 being located at the end of the sealing part 32, and the outer diameter of the sealing part 32 being greater than the outer diameter of the ejector pin 31.

[0017] In use, gas enters the inside of the valve body 10 from the air inlet 11, and the ejector rod 30 is pressed to move towards the electromagnetic valve 20, and at the same time that the electromagnetic valve 20 is started to ignite, the sealing part 32 of the ejector rod 30 isolates the main fire outlet 12 to prevent gas from entering the main fire outlet 13, and the constant light outlet 12 is first ignited for 5 seconds, and then the ejector rod 30 is pressed to move outward, and gas enters the main fire outlet 13 to ignite and emit fire outward, so that the order of first igniting a small fire and then igniting a large fire will not have a deflagration phenomenon, and use is safer.

[0018] In order to make the sealing property between the sealing part 32 and the main fire outlet 13 better, a sealing ring 14 is arranged at the position where gas enters the main fire outlet 13, the ejector pin 31 of the ejector rod 30 penetrates the sealing ring 14, and the sealing part 32 abuts against the sealing ring 14 to achieve the effect of isolation and sealing.

[0019] The other end of the jacking rod 30 is provided with a push rod spring 33 and a push rod 34. The push rod spring 33 is sleeved outside the jacking rod 30. The push rod 34 is sleeved outside the push rod spring 33 at one end and is fixedly connected with the jacking rod 30. The other end of the push rod 34 extends to the outside of the valve body 10. When in use, pressing the push rod 34 can drive the jacking rod 30 to move towards the electromagnetic valve 20. The two ends of the push rod spring 33 abut against the gaskets 35 on the two sides of the jacking rod 30. The push rod spring 33 can automatically reset the pressed push rod 34.

[0020] The valve body 10 is provided with a nut 15 at the end of the electromagnetic valve 20. The electromagnetic valve 20 can be fixedly installed in the valve body 10 through the nut 15.

[0021] In summary, the constant pilot flame first ignition explosion-proof push rod valve can realize the sequence of igniting the constant pilot flame and then igniting the main flame, realizes the sequence from small fire to large fire, prevents the phenomenon of deflagration, and makes the use of the gas appliance safer.

Claims

1. A constant glow pilot flame proof push rod valve characterized by: The valve body (10) includes an electromagnetic valve (20) and a top rod (30), the valve body (10) is provided with an air inlet (11), a constant pilot outlet (12) and a main pilot outlet (13), the air inlet (11) is communicated with the constant pilot outlet (12) and the main pilot outlet (13), the constant pilot outlet (12) is arranged near the electromagnetic valve (20), the top rod (30) is provided with a top needle (31) and a sealing part (32), the top needle (31) is arranged at the end of the sealing part (32), and the outer diameter of the sealing part (32) is larger than that of the top needle (31).

2. A constant flame pilot-operated proof cock valve according to claim 1, characterized in that: A sealing ring (14) is arranged at the position of the main pilot outlet (13) into which air enters, the top needle (31) of the top rod (30) penetrates the sealing ring (14), and the sealing part (32) abuts against the sealing ring (14).

3. The constant flame pilot-operated proof cock valve according to claim 2, characterized in that: The other end of the top rod (30) is provided with a push rod spring (33) and a push rod (34), the push rod spring (33) is sleeved outside the top rod (30), one end of the push rod (34) is sleeved outside the push rod spring (33) and is fixedly connected with the top rod (30), and the other end extends to the outside of the valve body (10).

4. The constant flame pilot-operated proof cock valve according to claim 3, characterized in that: The two ends of the push rod spring (33) abut against the gaskets (35) on the two sides of the top rod (30), and the push rod (34) after being pressed can be automatically reset through the push rod spring (33).

5. A constant flame pilot-operated proof cock valve according to claim 4, characterized in that: The valve body (10) is provided with a nut (15) at the end of the electromagnetic valve (20), and the electromagnetic valve (20) can be fixedly installed in the valve body (10) through the nut (15).

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