CN201212571Y

CN201212571Y - High sensitive non-blocking non-return valve

Info

Publication number: CN201212571Y
Application number: CNU2008201190978U
Authority: CN
Inventors: 裘苗全
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-03-25
Anticipated expiration: 2018-06-24

Abstract

The utility model relates to a high sensitivity jam-free one-way valve, in particular to a one-way valve which has high sensitivity, enables the foreign impurities not to be easily blocked and ensures the basic function of the one-way valve available. The one-way valve is characterized in that a valve 3 is arranged in a valve body 1 and between a valve seat 4 and a spring 2, a circular cone is arranged at the upper part of the valve 3, a groove is manufactured on the surface of the circular cone, an O-shaped ring 6 is embedded in the groove, a conical surface with identical taper with the circular cone at the upper part of the valve 3 is manufactured under the inner cavity of the valve seat 4, and when the valve is closed, the edge of the O-shaped ring 6 on the circular cone of the valve 3 is in contact with the conical surface below the inner cavity of the valve seat 4. Since the opening-closing sealing structure is conical, the foreign impurities in the medium cannot be retained on the one-way valve, namely, the leakage is not caused due to jam; and meanwhile, the valve 3 is embedded with the O-shaped ring 6, when the valve 3 is closed and contacted with the valve seat 4, the valve 3 adopts linear seal, thereby the one-way valve is the novel one-way valve with high sensitivity and no jam at present.

Description

The highly sensitive jam one-way valve of exempting from

One, technical field

The utility model relates to that impurity in a kind of highly sensitive, one-way flow medium is difficult for blocking, the reliable sealing one-way valve, specifically a kind of highly sensitive jam one-way valve of exempting from.

Two, background technique

As everyone knows, one-way cock is that flowing medium can only flow and can not be to the control valve that flows in the other direction to a direction.The most basic requirement of this valve is must have to rely on flowing of medium itself to open automatically, and the function that tightly stops medium to flow backwards.Ou Ran chance once, though I have seen barometric tank inflation soon on the building site of this city, the gauge hand on it is descending slowly, and with slight titter titter sound.I examine and have checked that the back finds: be contained in the one-way valve (Fig. 1) that is used to inflate on the barometric tank and do not play one-way valve and answer role, its internal seal structure is the plane sealing structure that valve seat 8 and plain cushion 9 are formed, therefore impurity easily is detained on it, causes the poorly sealed close interior pressurized air of barometric tank that causes to the opposite direction seepage; Secondly owing to be face seal, seal pressure is big, and under the condition of identical sealing force, it is unreliable to seal.Workman's reflection on the building site, the phenomenon of barometric tank seepage often produces, therefore, then will start air compressor inflates again to barometric tank, make it the working pressure that keeps essential, the obvious consequence of this situation is: because the seepage of one-way valve forces air compressor repeatedly to operate, therefore wasted the energy and the time of our preciousnesses, even had influence on the progress of engineering.

Three, summary of the invention

The purpose of this utility model is: for fear of because of the waste of the valuable energy that seepage caused of one-way valve and save time, the invention provides a kind of highly sensitive, impurity and be difficult for the highly sensitive jam one-way valve of exempting from that blocks, do not make the one-way valve fundamental function to lose efficacy.

The highly sensitive technological scheme of exempting from the jam one-way valve of the utility model is: it comprises valve body (1), spring (2), and valve (3), valve seat (4), seal ring (5) and O type circle (6) are formed.It is characterized in that valve (3) top is cone, the cone surface is shaped on a groove, and groove is embedded with an O type circle (6); Valve seat (4) is a hollow reducing cylindrical body, and inner chamber below is shaped on the conical surface with tapering such as valve (3) upper cone body, and valve (3) bottom is a hollow circular cylinder, and it is built-in with spring (2) and is shaped on cross through hole between cone and the cylindrical body.Because the highly sensitive keying sealing configuration of exempting from the jam one-way valve of the utility model is taper.Therefore the impurity in the medium can not stop on it, does not promptly cause seepage because of jam; Because valve (3) is embedded with an O type circle (6), therefore closing with valve seat (4) when valve (3) is linear sealing when contacting simultaneously, and seal pressure is little, even pressure is not high, seals still reliable.

Four, description of drawings

Fig. 1 is the sectional view of former one-way valve structures:

Among the figure: 1, valve body; 2, spring; 5, sealing gasket; 7, valve; 8, valve seat; 9, plain cushion.

Fig. 1 illustrates: in valve body 1, the below is equipped with spring 2, and the top is equipped with valve seat 8, is provided with a valve 7 between valve seat 8 and spring 2, and valve 7 tops are embedded with a plain cushion 9.When closed check valve, plain cushion 9 forms plane sealing with the belt plane contact of valve seat 8 lower ends.

Fig. 2 is the highly sensitive structure sectional view of exempting from the jam one-way valve of the utility model:

Among the figure: 1, valve body; 2, spring; 3, valve; 4, valve seat; 5, sealing gasket; 6, O type circle.

Fig. 2 illustrates: in valve body 1, the below is equipped with spring 2, the top is equipped with valve seat 4, be provided with a valve 3 between valve seat 4 and spring 2, valve 3 tops are cone, and the cone surface is shaped on a groove, it is embedded with an O type circle 6, valve seat 4 inner chambers belows is shaped on the conical surface with tapering such as valve 3 upper cone bodies, and when the utility model is highly sensitive when exempting from the jam closed check valve, the O on the valve 3 upper cone bodies resembles circle 6 and contacts the formation linear sealing with the conical surface of valve seat 4 inner chambers below.

Five, embodiment

Below in conjunction with accompanying drawing the highly sensitive specific implementation process of exempting from the jam one-way valve of the utility model is described further:

1, assembly process: put into spring 2 in the valve body 1 of rib-loop in two ends are shaped on, putting into top then is that its upper groove of cone shape is embedded with an O type circle 6, the bottom is the valve 3 of hollow circular cylinder, and spring 2 parts are entered in the cylindrical body of bottom hollow; In valve body 1 surface step, put into a seal ring 5 then, again valve seat 4 is screwed in the interior rib-loop on valve body 1 top, promptly become the highly sensitive jam one-way valve of exempting from of the utility model until compressing seal ring 5.

2, using process: at first the highly sensitive jam one-way valve of exempting from of the utility model is received in the pipeline: valve body 1 top internal thread is connected with admission line, and rib-loop links to each other with barometric tank (or gas holder) in the below.When one-way valve top air inlet, air pressure backs down valve 3 and moves downward (spring 2 is compressed), and air-flow enters downwards from the cross through hole of gap through valve 3 middle parts between valve 3 and the valve seat 4 presses jar (or gas holder) to carry out inflation; When pressing jar (or gas holder) to reach certain pressure, air compressor quits work, at this moment, the pressure of the reposition force of spring 2 and pressure jar (or gas holder) upwards pushes up valve 3, O type circle 6 on the valve 3 upper cone bodies is contacted with the conical surface of valve seat 4 inner chambers below, form linear sealing, guaranteed that gas is not to the reverse seepage of pipeline.

Claims

1, the highly sensitive jam one-way valve of exempting from, it comprises valve body (1), spring (2), valve (3), valve seat (4), seal ring (5) and O type circle (6) are formed, it is characterized in that valve (3) top is cone, the cone surface is shaped on a groove, and groove is embedded with an O type circle (6).

2, the highly sensitive jam one-way valve of exempting from as claimed in claim 1 is characterized in that described valve seat (4) is a hollow reducing cylindrical body, and inner chamber below is shaped on the conical surface with tapering such as valve (3) upper cone body.