CN2547967Y

CN2547967Y - Automatic-cleaning double-seat unloading ball valve

Info

Publication number: CN2547967Y
Application number: CN 02218644
Authority: CN
Inventors: 张逸芳; 张立宏; 陆平
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2002-01-28
Filing date: 2002-01-28
Publication date: 2003-04-30
Anticipated expiration: 2012-01-28

Abstract

The utility model provides an automatic-cleaning double-seat unloading ball valve; a cleaning device is arranged on two sides of a valve body; after the valve body executes the closing motion, the valve lumen is cleand by the cleaning device; the utility mode adopts a double-valve seat structure. The utility model has the advantages of avoiding that dust in the lumen condenses to felt into high-intensity dirt and felt on the ball body and affect the opening of the valve. The double-valve seat structure is adopted to make the ball bearing symmetrical and balance, thereby improving the stress of the valve lever and avoid inner leakage.

Description

Automatic-cleaning two-seater Unloading ball valve

The utility model relates to a kind of automatic-cleaning two-seater Unloading ball valve, is applicable on the solid dirt ash or granular media conveyance conduit of easy fouling, makes ash-discharging device and uses.

At present, be applicable to the solid dirt ash or the employed Unloading ball valve of granular media conveyance conduit of easy fouling, adopt the single valve stand structure, promptly only one valve seat is being set in medium inlet.Exist the easy fouling of valve cavity mostly, and be bonded on the spheroid, influence valve opening and closing, ring wear is fast, and is poorly sealed, and working life is short; In addition, owing to adopt the single valve stand structure, spheroid is asymmetric supporting, and valve rod is subjected to force unbalance, easily causes disadvantages such as interior leakage.

The purpose of this utility model provides a kind of flexible operation, cleans long service life, the not interior Unloading ball valve that leaks automatically.

The technical solution of the utility model is: this automatic-cleaning two-seater Unloading ball valve comprises transmission device, support, valve body, upper valve rod, seal ring, valve seat, spring, spheroid, lower valve rod, valve gap, washing unit, spheroid is contained in the valve body by upper and lower valve rod, two valve seat symmetries are installed in valve body and the valve gap, seal ring is loaded in the valve seat, spring is equipped with at step place at the valve seat back side, and just seal ring can compensate after wearing and tearing automatically.Bi-side at valve body are provided with washing unit, the flange or the interface that is threaded.After valve was carried out closing motion, two minor valves of washing unit were opened immediately automatically, opened the back pressurized gas and promptly the valve body lumen were cleaned, and had avoided lumen dirt ash dewfall and the very high dirt layer of adhesion strength is bonded on the spheroid, influenced the unlatching of valve.Clean time preestablishes, and is generally 10 minutes (adjustable), cleans and finishes, and the valve of washing unit is promptly closed, and waits for the next round action.Adopt the symmetric double valve seat construction, make the sphere supports symmetrical balance, improved the stressing conditions of valve rod, avoided interior leakage.

Owing to adopted such scheme, it is poorly sealed to have solved existing Unloading ball valve, and working life is short, problems such as the easy fouling of valve cavity.

The utility model is described in further detail below in conjunction with accompanying drawing.

Accompanying drawing 1 is a plan view of the present utility model.

Accompanying drawing 2 is the A-A sectional structural map of Fig. 1, is closed condition.

Wherein: 1, transmission device; 2, support; 3, valve body; 4, seal ring; 5, valve seat; 6, spring; 7, spheroid; 8, upper valve rod; 9, key; 10, lower valve rod; 11, washing unit; 12, valve gap.

As shown in Figure 1 and Figure 2, transmission device 1 is connected by support 2 with valve body 3, spheroid 7 is installed in the valve body 3 by upper valve rod 8 and lower valve rod 10, upper valve rod is connected with spheroid 7 by key 9, two valve seat 5 symmetries are installed in valve body 3 and the valve gap 12, and seal ring 4 is installed in the valve seat 5, and spring 6 is contained in the step place, back of valve seat 5, in the bi-side of valve body 3 washing unit 11 is housed, washing unit 11 is made up of minor valve and kit.When transmission device 1 driving upper valve rod 8, upper valve rod 8 drives spheroids 7 half-twists, realizes valve opening and closing.When valve closing put in place, two minor valves of washing unit 11 were opened automatically, and pressurized gas promptly clean the lumen of valve.Clean time was generally 10 minutes, and the time preestablishes, and can regulate as required.After the cleaning action was finished, the minor valve of washing unit was promptly closed, and waited for the next round action.Adopt the structure of two valve seats 5, make spheroid 7 supporting symmetrical balances, improved the stressing conditions of valve rod 8,10, avoided interior leakage.

The utility model compared with prior art has the following advantages:

1, valve operation is flexible, non-scaling in the body cavity, long service life;

2, valve rod is stressed evenly, has avoided the generation of interior leakage.

Claims

1, a kind of automatic-cleaning two-seater Unloading ball valve, comprise compositions such as transmission device, support, valve body, upper valve rod, seal ring, valve seat, spring, spheroid, lower valve rod, valve gap, it is characterized in that: adopt two valve seats, be symmetrically placed in respectively between valve body and the valve gap, be provided with washing unit in the bi-side of valve body.