CN2806911Y

CN2806911Y - Valve core with elastic seal structure

Info

Publication number: CN2806911Y
Application number: CN 200520006220
Authority: CN
Inventors: 卞国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-20
Filing date: 2005-07-20
Publication date: 2006-08-16
Anticipated expiration: 2015-07-20

Abstract

The utility model discloses a valve core with an elastic seal structure, which comprises a valve core main body (1), wherein an annular seal groove (2) is arranged on the valve core main body (1), and an elastic seal ring (3) is arranged in the annular seal groove (2). The utility model has the characteristics of simple structure, easy processing, low cost, long service life, good sealing performance and convenient maintenance. The using cost can be reduced.

Description

A kind of spool with elastic packing structure

Technical field

The utility model relates to a kind of spool construction of valve.

Background technique

At present, the valve of selling on the market, its valve seal and seal spool generally adopt stainless steel or copper material to do sealing material, for guaranteeing the reliable of sealing, the sealed faying face of valve body and spool needs higher quality of fit, and valve can not leaked, thereby make processing difficulties, cost is higher.Above-mentioned valve in use for some time, because influence of temperature variation is to be that valve opening and closing causes the wearing and tearing of valve body and valve core sealed cover that quality of fit is descended, when quality of fit drops to a certain degree, valve will produce seepage and leakage, at this moment need change new valve again.

Summary of the invention

The purpose of this utility model is, a kind of spool with elastic packing structure is provided.It does not need higher required precision with cooperating of valve body, can reduce the difficulty of processing, reduces cost.Its good airproof performance can make valve can not produce leakage in long service time.Both made and leaked, keeped in repair also easily, need not integral replacing.

The utility model is achieved in that a kind of spool with elastic packing structure, and its formation comprises spool body 1, it is characterized in that: have annular seal groove 2 on spool body 1, elastic seal ring 3 is housed in the annular seal groove 2.

The above-mentioned spool with elastic packing structure, elastic seal ring 3 is provided with fixture block 4.

Aforesaid spool with elastic packing structure, the material of elastic seal ring 3 can adopt plastics, nylon, rubber, polytetrafluoroethylene or PPO.

Compared with prior art, the utility model need not higher required precision with cooperating of valve body, can reduce the difficulty of processing, reduce production costs low price, good airproof performance, can make valve can not produce leakage in long service time, maintainability is good, can reduce user's cost.Can be used in the valves such as gate valve, stop valve, blowdown valve, bottom valve, safety check, liquid ammonium valve, marine valve.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a user mode schematic representation of the present utility model;

Fig. 3 is the structural representation of annular seal groove;

Fig. 4 is the structural representation of seal ring;

Fig. 5 is that the A of accompanying drawing 4 is to view.

Embodiment

Embodiment.Shown in accompanying

drawing

1,2,3, the formation with spool of elastic packing structure comprises spool body 1, has annular seal groove 2 on spool body 1, and elastic seal ring 3 is housed in the annular seal groove 2, and elastic seal ring 3 has been provided with the fixture block 4 of fixation.According to different media and serviceability temperature, the material of elastic seal ring 3 can adopt plastics, nylon, rubber, polytetrafluoroethylene or PPO, and PPO is that Yongtai, Wenzhou, Zhejiang Sealing factory produces the material that Sealing is used, and is a kind of carbon fiber composite, and is high temperature resistant.Spool with elastic packing structure is realized opening and closing by the drive of valve rod 6, in use, variation of temperature, expanding with heat and contract with cold can not influence sealing effect, elastic seal ring 3 can both with the sealing surface of valve body 5 fitting together tightly, seal ring 3 can adopt structural type as shown in Figure 4, seal ring 3 by fixture block 4 can with 1 firm the combining of spool body, spool can not come off when opening and closing.Thereby guaranteed that valve can not leak in the long time.Even leakage has taken place, only need spool is taken out, change seal ring 3 and get final product, after reloading, sealing surface need not grind, and need not debug, and just can come into operation.Valve core structure with elastic packing structure is simple, low price, and long service life, good seal performance, easy to maintenance.Can significantly reduce user's cost.

Claims

1, a kind of spool with elastic packing structure, its formation comprises spool body (1), it is characterized in that: have annular seal groove (2) on spool body (1), elastic seal ring (3) is housed in the annular seal groove (2).

2, the spool with elastic packing structure according to claim 1, it is characterized in that: elastic seal ring (3) is provided with fixture block (4).

3, the spool with elastic packing structure according to claim 1 and 2, it is characterized in that: the material of elastic seal ring (3) adopts plastics, nylon, rubber, polytetrafluoroethylene or PPO.