CN101672377B - Automatic-compensation sealing plug valve - Google Patents
Automatic-compensation sealing plug valve Download PDFInfo
- Publication number
- CN101672377B CN101672377B CN2009100356284A CN200910035628A CN101672377B CN 101672377 B CN101672377 B CN 101672377B CN 2009100356284 A CN2009100356284 A CN 2009100356284A CN 200910035628 A CN200910035628 A CN 200910035628A CN 101672377 B CN101672377 B CN 101672377B
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- China
- Prior art keywords
- valve body
- valve
- hole
- valve seat
- cock
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- Expired - Fee Related
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- Taps Or Cocks (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an automatic-compensation sealing plug valve, comprising a valve body, a plug cock, a main valve seat, an auxiliary valve seat, a valve cover, a positioning pin, a hand wheel and elastic sealing elements, wherein the cavity of the valve body is in a straight through structure, and an outlet is communicated with an inlet by an axial through hole; the middle section of the axial through hole is provided with an upward longitudinal through hole, the plug cock is installed in the longitudinal through hole, a cylindrical valve seat capable of automatically compensating is arranged between the plug cock and the valve body, and the tile-shaped main valve seat and the auxiliary valve seat which are erected oppositely constitute the cylindrical valve seat; the cambered back of the main valve seat is provided with a groove, a seal is embedded in the groove, and the bottom of the groove is provided with a through hole, the diameter of which is the same as that of the axial through hole of the valve body, and the radial through hole of the plug cock; the auxiliary valve seat is in a solid structure, and a sealing layer is externally stuck to the cambered back of the auxiliary valve seat; and the elastic sealing elements are installed between the upper and lower end surfaces on the large-diameter shaft section of the plug cock and the valve body so as to form an adjustable sealing structure. In the invention, the sealing of the valve seat and the valve body is improved as the pressure of the medium increases so as to effectively reduce the rotating torque of the plug cock, and the plug valve has the advantage of labor saving in opening and closing operations and does not easily leak.
Description
Technical field
The present invention relates to a kind of stopcock, specifically, the present invention relates to a kind of stopcock with automatic compensation sealing structure, this valve belongs to the universal machine product technical field.
Background technique
Stopcock is a kind of manually operated valve commonly used, belongs to the universal machine product.The cock of commercially available stopcock is a kind of cone axis with radial direction through hole, and cock and valve body constitute sealing and supporting structure with taper fit, rotates the situation that cooperates of cock physical alterations radial direction through hole and valve body inlet/outlet, i.e. the aperture of regulating cock valve or closure.Advantages such as that the stopcock of prior art has is simple in structure, easy to adjust, processing ease have been widely used in the various liquid flow control devices.But, the taper fit seal degree of stopcock is proportional with the driving torque that opens and closes operation, in order to improve sealability, must add the coupling mechanism force of large rotating plug with respect to valve body, must increase the driving torque that opens and closes operation, easily cause the sealing surface excessive wear thus and produce leakage.
Summary of the invention
The present invention is primarily aimed at the deficiencies in the prior art, propose a kind of simple in structure, easy processing, sealing compensation effective, open and close that the operation moment of torsion is little, the automatic-compensation sealing plug valve of long service life.
The present invention is achieved through the following technical solutions technical goal.
Automatic-compensation sealing plug valve, it comprises valve body, cock, main valve seat, auxiliary-seat, valve gap, locating stud, handwheel and elastomer seal.The valve pocket of described valve body is formed by linking up the import and the axial hole of outlet and longitudinal hole up, cock places the valve body longitudinal hole and connects and composes rotational structure by valve gap and valve body, handwheel is connected with the cock top, and the locating stud on the valve body cooperates with handwheel that to constitute the maximum angle of swing of cock be 90 ° limit structure.Its improvements are: described cock is the stepped shape cylinder axis, and its major diameter shaft part is positioned at the bottom, and this shaft part is provided with that a radial direction through hole equates with axial hole bore in the valve body, the center is contour.Described main valve seat and auxiliary-seat are a watt shape member, and the curved rear of main valve seat is provided with the square frame connected in star, and the through hole that bottom portion of groove is provided with matches with axial hole on the valve body and be measure-alike, setting-in Stamping Steel Ribbon in the groove housing.Main valve seat is positioned at valve body longitudinal hole and two ends axial hole junction point, and auxiliary-seat is a solid construction, the outer sealing layer that pastes on its curved rear.Auxiliary-seat is positioned at valve body longitudinal hole both sides, and two relative thirty years of age main valve seats, auxiliary-seats are formed valve seat cylindraceous jointly, and valve seat cooperates with valve body and cock major diameter shaft part outer wall forms the automatic compensation sealing structure.Described elastomer seal places the upper and lower end face of cock major diameter shaft part place, cooperates with the bottom end of valve gap bottom end and valve body longitudinal hole respectively to form axial adjustable sealing configuration.
The present invention compared with prior art has following good effect:
1, the circular hole in the cock of cylinder axis shape and the valve body, easy to process, easy measurement, accuracy of manufacturing height;
2, form valve seat cylindraceous by the main valve seat and the auxiliary-seat of watt shape, the back side that valve seat cooperates with valve body is provided with sealing configuration, and valve seat is more fitted with valve body under the pressure medium effect, significantly improves sealing;
3, cylinder axis sealing configuration, driving torque is little and constant, opens and closes rapid operation.
Description of drawings
Fig. 1 is a structural profile schematic representation of the present invention.
Fig. 2 is the generalized section that valve seat is in the unlatching situation when cooperating with cock.
Fig. 3 is the generalized section that valve seat is in the situation of closing when cooperating with cock.
Embodiment
The invention will be further described with reference to the accompanying drawings below.
Automatic-compensation sealing plug valve shown in Figure 1, it comprises valve body 1, cock 2, main valve seat 3, auxiliary-seat 4, valve gap 5, locating stud 6, handwheel 7 and elastomer seal 8.The valve pocket of described valve body 1 is a bypass structure, links up import and outlet by axial hole.The axial hole stage casing is provided with longitudinal hole up, and the cock 2 of cylinder axis shape places valve body 1 longitudinal hole, and connects and composes rotational structure by valve gap 5 and valve body 1.Cock 2 is rotated by the handwheel 7 that is connected, and is provided with locating stud 6 between handwheel 7 and the valve body 1 and constitutes limit structure, and its maximum angle of swing is 90 °.The cylinder with large diameter shaft part that is in cock 2 low sides is provided with a radial direction through hole, and this hole equates with axial hole bore in the valve body 1, the center is contour.Between the longitudinal hole and cock 2 major diameter shaft parts of valve body 1, be provided with the cylindrical shape valve seat of forming by relative thirty years of age watt shape main valve seat 3 and auxiliary-seat 4.The curved rear of main valve seat 3 is provided with the square frame connected in star, and the through-hole diameter that bottom portion of groove is provided with is equal to the axial hole diameter of valve body 1, setting-in Stamping Steel Ribbon 3.1 in the groove housing.Auxiliary-seat 4 is a solid construction, the outer sealing layer 4.1 that pastes on its curved rear.Valve seat cylindraceous matches with cock 2 major diameter shaft part outer walls between the place between valve body 1, fits more at pressure action of medium lower valve base outer wall and valve body 1 inwall, constitutes the automatic compensation sealing structure with respect to cock 2 and valve body 1.Shown in the accompanying drawing 2 be cock 2 with valve body 1 axial hole transverse sectional view when coaxial, this moment, valve was in the standard-sized sheet situation, the aneroid resistance.It shown in the accompanying drawing 3 transverse sectional view behind cock 2 relative valve body 1 half-twists, this moment, valve was in the situation of cutting out, the pressure of medium acts directly on cock 2 sides that are positioned at entrance point, formed thrust is strengthened the sealing of cock 2 another sides and main valve seat 3, has also strengthened the sealing of main valve seat 3 with valve body 1 simultaneously.Elastomer seal 8 places the upper and lower end face of cock 2 major diameter shaft parts place, cooperates with the bottom end of pump cover 5 bottom ends and valve body 1 longitudinal hole respectively to form axial adjustable sealing configuration.The present invention adopts cylindrical shaft part to cooperate with valve seat cylindraceous, and valve seat cylindraceous and cock 2 and valve body 1 be sealed under the pressure medium effect and strengthen, and effectively alleviates the driving torque of cock 2, makes that to open and close operation more laborsaving, and is difficult for leaking.
Claims (1)
1. automatic-compensation sealing plug valve, it comprises valve body (1), cock (2), main valve seat (3), auxiliary-seat (4), valve gap (5), locating stud (6), handwheel (7) and elastomer seal (8); The valve pocket of described valve body (1) is formed by linking up the import and the axial hole of outlet and longitudinal hole up, cock (2) places valve body (1) longitudinal hole and connects and composes rotational structure by valve gap (5) and valve body (1), handwheel (7) is connected with cock (2) top, and the locating stud (6) on the valve body (1) cooperates with handwheel (7) that to constitute the maximum angle of swing of cock (2) be 90 ° limit structure; It is characterized in that: described cock (2) is for the stepped shape cylinder axis, and its major diameter shaft part is positioned at the bottom, and this shaft part is provided with that a radial direction through hole equates with axial hole bore in the valve body (1), the center is contour; Described main valve seat (3) and auxiliary-seat (4) are a watt shape member, the curved rear of main valve seat (3) is provided with the square frame connected in star, the through-hole diameter that bottom portion of groove is provided with is equal to the axial hole diameter of valve body (1), setting-in Stamping Steel Ribbon (3.1) in the groove housing, main valve seat (3) is positioned at valve body (1) longitudinal hole and two ends axial hole junction point, auxiliary-seat (4) is a solid construction, the outer sealing layer (4.1) that pastes on its curved rear; Auxiliary-seat (4) is positioned at valve body (1) longitudinal hole both sides, and two relative thirty years of age main valve seats (3), auxiliary-seat (4) are formed valve seat cylindraceous jointly, and valve seat cooperates with valve body (1) and cock (2) major diameter shaft part outer wall forms the automatic compensation sealing structure; Described elastomer seal (8) places the upper and lower end face of cock (2) major diameter shaft part place, cooperates with the bottom end of valve gap (5) bottom end and valve body (1) longitudinal hole respectively to form axial adjustable sealing configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356284A CN101672377B (en) | 2009-09-28 | 2009-09-28 | Automatic-compensation sealing plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356284A CN101672377B (en) | 2009-09-28 | 2009-09-28 | Automatic-compensation sealing plug valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672377A CN101672377A (en) | 2010-03-17 |
| CN101672377B true CN101672377B (en) | 2010-12-29 |
Family
ID=42019727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100356284A Expired - Fee Related CN101672377B (en) | 2009-09-28 | 2009-09-28 | Automatic-compensation sealing plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101672377B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824974A (en) * | 2010-05-20 | 2010-09-08 | 江苏亿丰机械制造有限公司 | Self-sealing type floating well head water injecting valve |
| CN106151637A (en) * | 2015-03-23 | 2016-11-23 | 苏州科迪流体控制设备有限公司 | A kind of quick-mounting ball valve |
| TWI620886B (en) * | 2017-02-24 | 2018-04-11 | Jiang Sheng En | Valve structure with elastic stop block |
| CN110094534B (en) * | 2019-04-24 | 2024-04-30 | 哈电集团哈尔滨电站阀门有限公司 | Spring compensation type movable valve seat plug valve |
-
2009
- 2009-09-28 CN CN2009100356284A patent/CN101672377B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101672377A (en) | 2010-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130928 |