CN101413593A - Bidirectional soft and hard seal eccentric half-ball valve - Google Patents
Bidirectional soft and hard seal eccentric half-ball valve Download PDFInfo
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- CN101413593A CN101413593A CNA2008101979095A CN200810197909A CN101413593A CN 101413593 A CN101413593 A CN 101413593A CN A2008101979095 A CNA2008101979095 A CN A2008101979095A CN 200810197909 A CN200810197909 A CN 200810197909A CN 101413593 A CN101413593 A CN 101413593A
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Abstract
The invention discloses a bidirectional soft/hard sealing eccentric half-ball valve, comprising a valve body which is connected with a valve cover; the valve body is internally provided with an eccentric crankshaft which passes through the valve cover and is hermetically connected with the valve cover; the eccentric crankshaft is connected with a spherical crown; a runway at one side of the valve body is connected with a valve base which is used for positive hard sealing; the valve base is internally provided with a sealing trough which is internally provided with a sealing ring used for reverse soft sealing; the sealing trough is communicated with the runway at the side of the sealing trough; one side of the eccentric half-ball valve corresponding to the runway adopts two sealing structures: soft sealing and hard sealing, which have different directions; therefore, the bidirectional sealing of the eccentric half-ball valve is achieved, the eccentric half-ball valve can be installed in the positive direction or the reverse direction and the applicable range of the eccentric half-ball valve is enlarged; during the reverse sealing, the sealing ring is closely combined with the spherical crown under the water pressure; the bidirectional soft/hard sealing eccentric half-ball valve has simple and reasonable structure and smart arrangement, and is an eccentric half-ball valve with completely new sealing structure.
Description
Technical field
The invention belongs to the pipeline control valve door, be specifically related to a kind of eccentric half-ball valve.
Background technique
It is a lot of to work the ball valve kind of blocking medium in pipeline, and hard seal eccentric semi ball valve and soft seal eccentric half-ball valve are arranged.The sealing of hard seal eccentric semi ball valve is a metal to metal, and product has the cutting function, but sealing the time has certain leakage rate.The sealing of soft seal eccentric half-ball valve is a metal pair rubber, and product does not have the cutting function, but sealing can reach zero leakage.Hard seal ball valve can cut off ducted foreign material on pipeline, make pipeline unimpeded, and inflow-rate of water turbine is big, but because its sealing configuration causes certain leakage rate, can cause the loss of the energy.Soft sealing ball valve can play zero leakage on pipeline, but it can not cut off ducted foreign material, and foreign material are too much in the pipeline, can cause pipeline not smooth.And above-mentioned eccentric half-ball valve all can only be realized one-way sealing, promptly unidirectional use, and spherical crown is realized sealing along water (flow) direction, spherical crown flow path direction against the current is difficult to realize sealing.
Summary of the invention
The object of the present invention is to provide and a kind ofly can realize bidirectional soft and hard seal eccentric half-ball valve, to address the above problem.
Technological scheme of the present invention is: bidirectional soft and hard seal eccentric half-ball valve, it comprises valve body, valve body is connected with valve gap, eccentric crankshaft is set in the valve body, and eccentric crankshaft passes valve gap and sealing with it, connects spherical crown on the eccentric crankshaft, connect the valve seat that is used for the hard sealing of forward on valve body one side runner, establish seal groove in the valve seat, the seal ring of establishing in the seal groove that is used for reverse soft seal, seal groove is connected with this side runner.
Be provided with seal arrangement between the surface of contact of described Sealing and outer seat and/or interior valve seat.
Described valve seat is provided with discharge orifice, and discharge orifice one end in road is connected with runner, and the other end communicates with seal groove.
Described seal ring side is provided with the pressure-bearing annular groove
Described pressure-bearing annular groove is relative with road discharge orifice on the interior valve seat.
This eccentric half-ball valve adopts two kinds of sealing configurations of soft and hard seal in a side of runner, and be the sealing of two different direction, realize the two way sealed of eccentric half-ball valve, made eccentric half-ball valve can realize that forward is installed and oppositely installation, enlarged the Applicable scope of eccentric half-ball valve.When oppositely sealing, seal ring and spherical crown are combined closely by the pressure of water.It is simple and reasonable, arranges ingeniously, is a kind of eccentric half-ball valve of brand-new sealing configuration.
Description of drawings
Fig. 1 bidirectional soft and hard seal eccentric half-ball valve structural representation.
Fig. 2 bidirectional soft and hard seal structural representation.
Embodiment
Present embodiment is used for the explanation to claims of the present invention, and the scope of protection of present invention is not limited to subordinate's structure.
As shown in Figure 1, connect eccentric crankshaft 2 in the semispherical valve valve body 1, valve gap 8 is connected with valve body 1, and eccentric crankshaft 2 passes valve gap 8 and sealing with it. and valve gap 8 outer valve shafts are connected with drive unit 9 in the present embodiment.Drive unit 9 can be manual worm gearing, automatically worm gearing.This structure is identical with existing semispherical valve drive unit.
Connect the on-off structure that spherical crown 3 constitutes eccentric semi-spherical on the eccentric crankshaft 2, connect the bidirectional soft and hard seal device on valve body 1 one side runners, the bidirectional soft and hard seal device is located at the water exit end of valve forward flow in the present embodiment.
The bidirectional soft and hard seal device connects valve seat as shown in Figure 2 in the valve body 1, establish seal groove in the valve seat, the seal ring of establishing in the seal groove that is used for reverse soft seal, and seal groove is connected with this side runner.Valve seat can be an one-piece parts, also can one is that two parts constitute.Valve seat 5 and outer seat 4 in valve seat comprises in the present embodiment, the radial space between interior valve seat 5 and the outer seat 4 constitutes seal groove 10, is provided with seal ring 6 in the seal groove 10.
Outer seat and/or interior valve seat are provided with limited step, the corresponding step step of limiting of seal ring.The step 11 of limiting on the outer seat end face in the present embodiment, seal ring 6 corresponding limited steps 12, corresponding limited step 11 and limited step 12 are axially gapped.
Be provided with seal arrangement between the surface of contact of seal ring 6 and outer seat and/or interior valve seat.Seal ring 6 upper-end surfaces are provided with seal groove 13 in the present embodiment, establish the surface of contact sealing of seal ring 14 and interior valve seat 5 in the seal groove 13; Outer seat 4 end faces are provided with seal groove 15, establish the surface of contact sealing of seal ring 16 and seal ring 6 in the seal groove 15.Seal ring 6 sides are provided with pressure-bearing annular groove 17.
Be provided with seal arrangement between outer seat 4 and the valve body surface of contact, seal arrangement can be the seal ring 20 that is provided with on the valve body wall.
Interior valve seat and outer seat can be one-piece parts, also can be two split parts.Seal groove between interior valve seat and the outer seat also can one is taper type, and corresponding seal ring also is a taper type.
This valve forward sealing is by realizing between spherical crown and the interior valve seat, in the valve closing process, only at turn-off transient, spherical crown and internal valve seated connection touch, because the existence of spherical crown eccentric distance e, when valve closing, the pressure F of water makes spherical crown that a counterclockwise moment F*e around crankshaft center line be arranged in the valve, spherical crown tightly is pressed on the valve seat, makes valve have good selfsealings.
When oppositely sealing, the seal groove in the current of oppositely intaking enter by the road discharge orifice 18 on the interior valve seat between valve seat and the outer seat, hydraulic action closely contacts seal ring with spherical crown in the seal ring side, realizes oppositely sealing.
The anti-sand wear of bidirectional soft and hard seal eccentric half-ball valve: in the water system that has silt to exist, ball valve is after unlatching, and eccentric shaft and spherical crown are hidden in the valve body and are not washed away; Because wobbler action, in closing closed procedure, have only at the last moment that spherical crown just relies on valve seat and valve seat insert, do not form wearing and tearing, and in the runner without any obstruction, unimpeded fully, loss of head is very little.
The sealing configuration of bidirectional soft and hard seal eccentric half-ball valve is a double sealing, can two-wayly install.When forward is installed water inlet, valve seat insert is squeezed and plays the soft seal effect, reach the purpose of zero leakage, this moment, valve seat also tightly contacted with spherical crown, can play the function of foreign material in the cutting pipeline, when oppositely water inlet being installed, valve seat insert plays the effect of soft seal under self-packing effect, reach the purpose of zero leakage, valve seat tightly contacts with spherical crown, plays the function of joint foreign material in the cutting pipeline.
Claims (10)
1, a kind of bidirectional soft and hard seal eccentric half-ball valve, it comprises valve body, valve body is connected with valve gap, eccentric crankshaft is set in the valve body, and eccentric crankshaft passes valve gap and sealing with it, connects spherical crown on the eccentric crankshaft, it is characterized in that connecting on valve body one side runner valve seat that is used for the hard sealing of forward, establish seal groove in the valve seat, the seal ring of establishing in the seal groove that is used for reverse soft seal, seal groove is connected with this side runner.
2, bidirectional soft and hard seal eccentric half-ball valve according to claim 1 is characterized in that valve seat comprises outer seat and is used for the interior valve seat of hard sealing, establishes seal groove between outer seat and the interior valve seat.
3, bidirectional soft and hard seal eccentric half-ball valve according to claim 1 is characterized in that outer seat and/or interior valve seat are provided with limited step, the corresponding step step of limiting of seal ring.
4, as bidirectional soft and hard seal eccentric half-ball valve as described in the claim 3, it is characterized in that the limited step of outer seat and/or interior valve seat and the corresponding limited step step of seal ring are axially gapped.
5, bidirectional soft and hard seal eccentric half-ball valve as claimed in claim 1 or 2, valve seat is provided with discharge orifice in it is characterized in that, and discharge orifice one end in road is connected with runner, and the other end communicates with seal groove.
6, bidirectional soft and hard seal eccentric half-ball valve as claimed in claim 1 or 2 is characterized in that the seal groove inner seal ring, is provided with seal arrangement between the surface of contact of seal ring and outer seat and/or interior valve seat.
7, as bidirectional soft and hard seal eccentric half-ball valve as described in the claim 6, it is characterized in that the seal ring upper-end surface is provided with seal groove, establish the surface of contact sealing of seal ring and interior valve seat in the seal groove; The outer seat end face is provided with seal groove, establishes the surface of contact sealing of seal ring and seal ring in the seal groove.
8, as bidirectional soft and hard seal eccentric half-ball valve as described in claim 1 or 3 or 6, it is characterized in that the seal ring side is provided with the pressure-bearing annular groove.
9,, it is characterized in that the pressure-bearing annular groove is relative with road discharge orifice on the interior valve seat as bidirectional soft and hard seal eccentric half-ball valve as described in the claim 8.
10, as bidirectional soft and hard seal eccentric half-ball valve as described in the claim 2, it is characterized in that being provided with seal arrangement between outer seat and the valve body surface of contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101979095A CN101413593A (en) | 2008-11-27 | 2008-11-27 | Bidirectional soft and hard seal eccentric half-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101979095A CN101413593A (en) | 2008-11-27 | 2008-11-27 | Bidirectional soft and hard seal eccentric half-ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN101413593A true CN101413593A (en) | 2009-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101979095A Pending CN101413593A (en) | 2008-11-27 | 2008-11-27 | Bidirectional soft and hard seal eccentric half-ball valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829210A (en) * | 2012-08-22 | 2012-12-19 | 福建菲达阀门有限公司 | High-temperature discharging valve |
| CN103016777A (en) * | 2012-12-19 | 2013-04-03 | 武汉大禹阀门股份有限公司 | Eccentric half-ball valve |
| CN103032601A (en) * | 2012-12-19 | 2013-04-10 | 武汉大禹阀门股份有限公司 | Eccentric semi-spherical valve base |
| WO2014094593A1 (en) * | 2012-12-19 | 2014-06-26 | 武汉大禹阀门股份有限公司 | Eccentric hemisphere valve |
| CN106641317A (en) * | 2016-12-16 | 2017-05-10 | 安徽铜都流体科技股份有限公司 | Adjustable bi-directional pressure-bearing eccentric hemispherical valve |
| CN106763869A (en) * | 2017-01-12 | 2017-05-31 | 胜利阀门有限公司 | A kind of Full-diameter eccentric hemisphere valve |
| CN108612862A (en) * | 2018-07-19 | 2018-10-02 | 开维喜阀门集团有限公司 | It is a kind of can on-line maintenance eccentric half-ball valve |
-
2008
- 2008-11-27 CN CNA2008101979095A patent/CN101413593A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829210A (en) * | 2012-08-22 | 2012-12-19 | 福建菲达阀门有限公司 | High-temperature discharging valve |
| CN103016777A (en) * | 2012-12-19 | 2013-04-03 | 武汉大禹阀门股份有限公司 | Eccentric half-ball valve |
| CN103032601A (en) * | 2012-12-19 | 2013-04-10 | 武汉大禹阀门股份有限公司 | Eccentric semi-spherical valve base |
| CN103032601B (en) * | 2012-12-19 | 2014-05-21 | 武汉大禹阀门股份有限公司 | Eccentric semi-spherical valve base |
| WO2014094593A1 (en) * | 2012-12-19 | 2014-06-26 | 武汉大禹阀门股份有限公司 | Eccentric hemisphere valve |
| CN103016777B (en) * | 2012-12-19 | 2015-02-25 | 武汉大禹阀门股份有限公司 | Eccentric half-ball valve |
| CN106641317A (en) * | 2016-12-16 | 2017-05-10 | 安徽铜都流体科技股份有限公司 | Adjustable bi-directional pressure-bearing eccentric hemispherical valve |
| CN106763869A (en) * | 2017-01-12 | 2017-05-31 | 胜利阀门有限公司 | A kind of Full-diameter eccentric hemisphere valve |
| CN108612862A (en) * | 2018-07-19 | 2018-10-02 | 开维喜阀门集团有限公司 | It is a kind of can on-line maintenance eccentric half-ball valve |
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Open date: 20090422 |