CN206377269U - Valve port sealing ring of a gas proportional valve - Google Patents

Abstract

The utility model provides a valve port sealing ring of a gas proportional valve, comprising a ring body and a support ring, wherein the support ring is embedded in the ring body; the connection angle between the upper surface of the ring body and the inner side surface is a right angle; and the upper surface of the ring body is provided with an avoidance groove. In the utility model, the connection angle between the upper surface of the ring body and the inner side surface is a right angle, which reduces the contact area between the ring body and the sealing plug, and the avoidance groove can make room for the deformation of the ring body, thereby reducing the extrusion force on the ring body, reducing the degree of extrusion deformation, and thus increasing the service life.

Description

Valve port sealing ring of a gas proportional valve

technical field

The utility model relates to the technical field of sealing, in particular to a valve port sealing ring of a gas proportional valve.

Background technique

The gas proportional valve is the core control part of the gas appliance. Through the pressure regulation and voltage stabilization function of the gas proportional valve, the output pressure can be stabilized under the condition of fluctuating gas inlet pressure. At the same time, the gas proportional valve also has the function of opening and closing the gas pipeline. When the gas appliance is turned off, it can disconnect the gas channel, prevent the flow and leakage of gas, and protect the life safety of users.

As shown in Figure 1, the gas proportional valve is provided with a valve port and a sealing plug 1, and the sealing plug 1 can move up and down to open or close the valve port. Wherein, the edge 2 of the valve port is provided with a valve port sealing ring 3 for bonding with the sealing plug 3 to achieve a sealing effect.

The existing valve port sealing ring has a large contact area with the sealing plug, which causes a large degree of deformation of the valve port sealing ring. After long-term use, the valve port sealing ring is easily fatigued and damaged, resulting in the inability to closely adhere to the sealing plug. Closed, losing the sealing effect.

Utility model content

The technical problem to be solved by the utility model is to provide a valve port sealing ring capable of reducing the degree of deformation according to the deficiencies of the above-mentioned prior art.

The technical scheme of the utility model is as follows:

A valve port sealing ring of a gas proportional valve, comprising a ring body and a bracket ring, the bracket ring is embedded in the ring body; the connection angle between the upper surface of the ring body and the inner surface is a right angle; the upper surface of the ring body There are avoidance grooves.

Further, avoidance chamfers are provided at the corners between the inner side surface and the lower surface of the ring, and avoidance chamfers are provided at the corners between the outer side surface and the lower surface of the ring.

Further, the avoidance chamfer is a bevel chamfer.

Further, the support ring includes a horizontal part and a vertical part, and the inner edge of the horizontal part is connected to the upper edge of the vertical part.

Further, the vertical part is disposed in the ring body, and the outer edge of the horizontal part extends out of the outer side of the ring body.

Compared with the prior art, the utility model has the following beneficial effects: (1) The connection angle between the upper surface of the ring body and the inner surface is a right angle, which reduces the contact area between the ring body and the sealing plug, and the avoidance groove can be a ring body The deformation frees up space, reduces the extrusion force on the ring body, reduces the degree of extrusion deformation, and thus improves the service life; (2) the bracket ring can improve the strength of the ring body; (3) the avoidance chamfer can make the ring The body is more easily assembled on the edge of the valve port, and at the same time, the ring body is prevented from being cut by the valve port.

Description of drawings

Fig. 1 is a schematic diagram of cooperation of the edge of the valve port, the sealing ring of the valve port and the sealing plug in the prior art.

Fig. 2 is a cross-sectional view of an embodiment of the utility model.

Fig. 3 is a schematic diagram of the coordination of the edge of the valve port, the sealing ring of the valve port and the sealing plug in the embodiment of the utility model.

reference sign

10. Ring body, 11. Connecting corner, 12. Avoidance groove, 13. Avoidance chamfer;

20, bracket ring, 21, horizontal part, 22, vertical part.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-3, the embodiment provided by the utility model is a valve port seal ring of a gas proportional valve, which includes a ring body 10 and a bracket ring 20, and the bracket ring 20 is embedded in the ring body 10; The connecting corner 11 between the upper surface of the ring body 10 and the inner surface is a right angle; the upper surface of the ring body 10 is provided with an escape groove 12 . The connection angle 11 between the upper surface of the ring body 10 and the inner surface is a right angle, which reduces the contact area between the ring body 10 and the sealing plug, and avoids the groove 12 to make room for the deformation of the ring body 10, so that the squeezed body 10 is squeezed. The pressure is reduced, reducing the degree of extrusion deformation, thereby improving the service life.

Avoidance chamfers 13 are provided at the corners between the inner surface and the lower surface of the ring body 10 , and avoidance chamfers 13 are provided at the corners between the outer surface and the lower surface of the ring body 10 . Wherein, in this embodiment, the avoidance chamfer 13 is a bevel chamfer. The designer may also refer to the avoidance chamfer 13 as an arc chamfer if it is more practical. The avoidance chamfer 13 can make the ring body 10 more easily assembled on the edge of the valve port, and at the same time prevent the ring body 10 from being cut by the valve port.

The support ring 20 includes a horizontal portion 21 and a vertical portion 22 , the inner edge of the horizontal portion 21 is connected to the upper edge of the vertical portion 22 . The vertical portion 22 is disposed inside the ring body 10 , and the outer edge of the horizontal portion 21 extends out of the outer surface of the ring body 10 . Wherein, the bracket ring 20 can improve the strength of the ring body 10, and the horizontal portion 21 is also used for direct assembly of the valve port sealing ring and the valve port.

In this embodiment, the ring body 10 is made of rubber, and the bracket ring 20 is made of metal.

What is disclosed above is only a preferred embodiment of the utility model, and of course it cannot limit the scope of rights of the utility model. Therefore, equivalent changes made according to the claims of the utility model still fall within the scope of the utility model.

Claims (5)

1. a kind of sealing valve port circle of gas ratio valve, it is characterised in that：Including circle body and support ring, the support ring is embedded in The circle body；The connection corner of the circle body upper surface and medial surface is right angle；The circle body upper surface is provided with avoidance groove.

2. the sealing valve port circle of a kind of gas ratio valve according to claim 1, it is characterised in that：The circle body medial surface with The corner of lower surface is provided with avoidance chamfering, and the corner of the circle body lateral surface and lower surface is provided with avoidance chamfering.

3. the sealing valve port circle of a kind of gas ratio valve according to claim 2, it is characterised in that：The avoidance chamfering is oblique Surface chamfer.

4. the sealing valve port circle of a kind of gas ratio valve according to claim 1, it is characterised in that：The support ring includes water Flat portion and vertical component effect, the inward flange of the horizontal part are connected with the top edge of the vertical component effect.

5. the sealing valve port circle of a kind of gas ratio valve according to claim 4, it is characterised in that：The vertical component effect is arranged at In the circle body, the circle body lateral surface is extended in the outward flange of the horizontal part.