CN2182913Y

CN2182913Y - Automatic valve with double core

Info

Publication number: CN2182913Y
Application number: CN 93239748
Authority: CN
Inventors: 刘启祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-23
Filing date: 1993-12-23
Publication date: 1994-11-16
Anticipated expiration: 2003-12-23

Abstract

The utility model discloses an automatic ball valve with double cores, composed of a valve body, ball cores, a compound valve sheet, a thread sleeve, a block ring, etc. The inner core of the ball cores is lathed with a step, the compound valve sheet of a ventilating hole is arranged inside the inner core, and the movable position inside the inner core of the compound valve sheet can be limited by the thread sleeve. The utility model is sealed by the block ring, and forms a solo valve. The compound valve sheet is on and off automatically under the action of self weight of a medium and self pression of the medium. The utility model is suitable for installing on the urban gas pipe. The utility model can not be operated by hand, and only need to be switched on the cooking range directly.

Description

Automatic valve with double core

The utility model belongs to a kind of valve, is used for ending of various media, is particularly useful on the pipeline of urban family use combustion gas.

At present used valve on the urban family gas pipeline is the taper stop valve mostly, all is that armrest moves and finishes Kai Heguan.Just there is mechanical wear in this, and service time, length will produce gas leakage, or entrained air, again because of the etch of kitchen fume, causes valve body and spool to produce adhesion, and Kai Heguan is very dumb, need open and close with pliers or wrench, uses pretty troublesome.

The purpose of this utility model provides a kind of machinery wearing and tearing of both not had, and does not have the automatic flexibly twin-core ball valve of oil smoke adhesion and switch again.

Automatically the twin-core ball valve is by spool 1, and composite valve 2, swivel nut 3, back-up ring 4 and valve body 5 etc. are formed.Endoporus car one step that it is characterized in that ball core 1, leave space in the hole, wherein adorn composite valve 2, with the mobile position of swivel nut 3 restriction composite valves 2 in the space greater than composite valve thickness, with back-up ring 4 sealing terminations, make it in the endoporus of ball core 1, form an one-way valve again.Composite valve 2 usefulness sheetmetals and special rubber combined forming, and 2～20 passages are set on week in the garden of sheetmetal, composite valve 2 is opened automatically and is closed under the effect of pressure medium and deadweight.

Fig. 1 is the cut-away view of facing of automatic twin-core ball valve;

Fig. 2 is the medium flow graph of automatic twin-core ball valve;

Fig. 3 is the partial cutaway diagrammatic sketch of automatic twin-core ball valve;

By accompanying drawing the utility model is further described below, according to Fig. 1, Fig. 2, shown in Figure 3, the twin-core ball valve is made up of institutes such as valve body 5, ball core 1, composite valve 2, swivel nut 3 and back-up rings 4 automatically.The making of valve body 5, ball core 1 is identical with ordinary ball valve with function of use.Just, leave space in the hole, wherein adorn composite valve 2, in the mobile position in space, seal its terminations with back-up ring 4 with swivel nut 3 restriction composite valves 2 greater than composite valve 2 thickness at endoporus car one step of ball core 1.Make it in the endoporus of ball core 1, form an one-way valve again.Composite valve 2 usefulness sheetmetals and special rubber combined forming.And 2～20 passages being set on week in the garden of sheetmetal, composite valve 2 is opened automatically and is closed under the effect of pressure medium and deadweight.When this valve was installed, left end must be downwards, and right-hand member upwards.

Shown in Figure 2, when medium is in the left end transfer valve of valve, spool 1, interior composite valve 2 is opened under the pressure effect of medium automatically.Medium enters the right-hand member of valve through the passage on the sheetmetal garden week on the composite valve.When the pressure of valve left end medium transport is reduced to less than 2000pa, or the pressure of valve right-hand member be can not guarantee normal pressure greater than left end the time, composite valve 2 deadweight with under the effect of pressing, will close automatically.

If when wanting service conduits or cooking stove switch, available manual-lock ball core 1 is just fully by medium.In order to make the ball core 1 can only half-twist in valve body 5, between valve body 5 and handle 6, limit the rotational position of ball core 1 with locating stud 7.

This valve is compared with existing ball valve and is had following advantage:

1, automatic valve with double core has the function of ordinary ball valve and the safety of check valve Function.

2, do not have mechanical wear, be not subjected to the etch of oil smoke and adhesion yet, need not be manual, only need on cooking stove, directly open and close.

3, starting force is little, can start under the pressure of 2000pa, and resistance is little.Switch is flexible, and is easy to use.

Claims

1, a kind of automatic twin-core ball valve, it is made up of valve body, ball core, composite valve, swivel nut and back-up ring etc., endoporus car one step that it is characterized in that ball core 1, leave space in the hole greater than composite valve 2 thickness, composite valve 2 wherein is housed, with swivel nut 3 mobile positions of restriction composite valve in the hole.

2, automatic twin-core ball valve according to claim 1 is characterized in that the garden of the sheetmetal of composite valve 2 is provided with 2～20 passages on week.