CN202971992U - Double-way eccentric automatic alignment sealing semi-ball valve - Google Patents
Double-way eccentric automatic alignment sealing semi-ball valve Download PDFInfo
- Publication number
- CN202971992U CN202971992U CN 201220668949 CN201220668949U CN202971992U CN 202971992 U CN202971992 U CN 202971992U CN 201220668949 CN201220668949 CN 201220668949 CN 201220668949 U CN201220668949 U CN 201220668949U CN 202971992 U CN202971992 U CN 202971992U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- semi
- ball
- hemisphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a double-way eccentric automatic alignment sealing semi-ball valve. The shortcomings that when a valve rod of an existing double-way eccentric semi-ball valve works, an axial position is fixed, so that when an error exists between the semi-ball face of a semi-ball body and the sealing face of a valve seat, complete contacting cannot be achieved, and closing zero leakage can not be achieved are overcome. The semi-ball valve comprises a valve body, a valve seat, an eccentric valve rod arranged in the valve body and a semi-ball body fixed on the valve rod. The valve rod can be arranged in an upper slide sleeve and a lower slide sleeve on the valve body in supporting and up-down floating modes. A space which can be used for the semi-ball body to float up and down is arranged in an inner cavity of the valve body. When an error exists between sealing faces so that the semi-ball valve is not closed tightly, the valve rod continues to rotate, the semi-ball body can float up and down under the effect of extruding force and be aligned with the sealing faces of the valve seat automatically, the advantages in the prior art are kept, closing zero leakage of the semi-ball valve is achieved, production cost is not greatly improved, and durability and reliability of using of the valve are effectively guaranteed.
Description
Technical field
The utility model belongs to the valve class, and specifically a kind of spool is hemispheroidal bidirectional eccentric valve semispherical valve.
Background technique
The bidirectional eccentric semispherical valve is a kind of novel valve that is widely adopted in recent years.Existing its characteristics of bidirectional eccentric semispherical valve are, be arranged on and drive the valve rod that hemisphere rotates on valve body, its shaft axis has departed from the center line of valve seat in the horizontal direction, this can be clear that from accompanying drawing 3 and accompanying drawing 4, and accompanying drawing 4 is enlarged views of hemisphere 4 and valve seat 3 position relationships in accompanying drawing 3.In accompanying drawing 3 and accompanying drawing 4, because hemisphere 4 is fixed on valve rod, the shaft axis 8 of valve rod departs from the valve seat center line 7 of valve seat 3 on horizontal position, when throttle down, valve rod drives hemisphere 4 around shaft axis 8 rotations of self, the hemisphere face of hemisphere 4 moves closer to valve seat 3 sealing surfaces, and sealing is completed in final two sealing surface contacts; When Open valve, valve rod drives hemisphere 4 direction rotation opposite with throttle down, makes the sealing surface of hemisphere 4 break away from gradually valve seat 3, until open fully, the imaginary line in figure is partly the hemisphere 4 that has broken away from valve seat 3.
Due to above-mentioned valve in closed or the process of opening, the hemisphere face of hemisphere 4 contacts without any with valve seat 3, until just contact when sealing fully, so just eliminated valve phase mutual friction between sealing surface in the open and close process, thereby solved because of frequent switch valve, make sealing surface wear and affect the problem of sealing effect, so the bidirectional eccentric semispherical valve has obtained applying of wide model at present.
But, hard sealing structure due to what adopt between the hemisphere that has semispherical valve now and valve seat, and in work, the axial position of valve rod is constant, when rotation valve rod makes semispherical valve closed, the impact of the pressure distribution inequality on the valve seat that can be subject to processing precision, installation precision between hemispheroidal sphere and valve seat and be brought by bias, cause between the sealing surface of hemispheroidal hemisphere face and valve seat and can not contact fully because of error, can't reach and close zero leakage, this is the shortcoming that can not put up with for the valve that is used on the strong fluid pipeline of mobility.
In order to promote the sealing effect of above-mentioned valve, can change its basic structure on the one hand, for example further increase the strength that hemisphere is urged, but can bring again the new problems such as the structure complicated of valve rod and Denso system attachment portion and the moment increase of valve opening stage; On the other hand, if by selecting special material and complicated manufacturing process processing also can solve, still can improve significantly cost of production so again.
How to keep existing bidirectional eccentric semispherical valve switch frictionless advantage, and in its structure too not complicated and increase substantially cost of production in, can solve well again the zero leakage problem of closing of semispherical valve, be to be badly in need of at present solving.
Summary of the invention
Technical problem to be solved in the utility model is, the valve rod that overcomes existing bidirectional eccentric valve semispherical valve is fixed because of axial position at work, when existing error not contact fully between the sealing surface of hemispheroidal hemisphere face and valve seat, can't reach the shortcoming of closing zero leakage, a kind of bidirectional eccentric automatic aligning seal semi ball valve is provided.
The problems referred to above that exist in order to solve prior art, the utility model is to adopt following technical proposals to realize: described semispherical valve comprises valve body, be arranged on valve seat on valve body, be arranged in valve body perpendicular to the valve seat center line and with the valve rod of valve seat center line bias, and after being fixed on valve rod, rotating, its hemisphere face can the hemisphere corresponding with sealing surface of seat, described valve rod can support in the upper sliding sleeve and low sleeve that is arranged on valve body with fluctuating, is provided with the space that hemisphere is fluctuated at body cavity.
The utility model also has following technical characteristics:
Described valve rod, formed by the upper valve rod and the lower valve rod that are on the same center line, the body of rod of upper valve rod supports and is arranged in described upper sliding sleeve, the lower end of upper valve rod is fixedly connected with described hemispheroidal upper end, the lower end of lower valve rod is inserted in the low sleeve of valve body lower portion, and the upper end of lower valve rod is fixedly connected with described hemispheroidal lower end;
The lower end that is positioned at described low sleeve on valve body is fixed with lower that seals the low sleeve under shed, and cover has Compress Spring, the lower end of Compress Spring to be sitting in above described lower on the step axle journal of described lower valve rod bottom.
When the needs throttle down, handle valve rod and drive hemisphere around the shaft axis rotation of self, under the effect of bias, hemispheroidal hemisphere face moves closer to sealing surface of seat, until complete gluing, sealing.When due to processing, install and the valve seat that brought by bias on pressure distribution uneven, cause between hemispheroidal hemisphere face and sealing surface of seat and to produce the sealing error and can not fit fully the time, be rotated further valve rod, under the effect of extruding force, hemisphere can be when relying on sealing surface of seat fully, move up and down from action with eliminating the sealing error, reach and suffer from one's own actions the complete contraposition sealing in position.Because hemisphere is fixed on valve rod, hemispheroidal moving belt ovable valve stem direction of axis line along self between upper sliding sleeve and low sleeve moves up and down.
advantage of the present utility model and good effect are, because the valve rod of described semispherical valve can move up and down along the direction of axis line of self, when throttle down, when due to processing, the sealing error that the factors such as installation and bias cause, can make between hemispheroidal hemisphere face and sealing surface of seat and can not fit fully, be rotated further valve rod extruding valve seat, hemisphere fluctuates between upper sliding sleeve and low sleeve together at meeting and valve rod under the effect of extruding force, automatic position adjusting function on sealing surface of seat, because the scope of error is not too large, hemisphere is easy to capturing position and makes the complete gluing, sealing of sealing surface, reach and close zero leakage.Like this, both kept prior art bidirectional eccentric semispherical valve switch frictionless advantage, do not make again its structure too complicated, do not increase substantially cost of production yet, just realized the zero leakage of closing of bidirectional eccentric semispherical valve, effectively guaranteed permanence and reliability that valve uses, little investment, instant effect, easy to utilize.
Description of drawings
Fig. 1 is the vertical cross-sectional schematic of a kind of working state of the utility model;
Fig. 2 is the vertical cross-sectional schematic of the another kind of working state of the utility model;
Schematic cross section when Fig. 3 works for existing bidirectional eccentric semispherical valve;
Fig. 4 is the enlarged diagram when in Fig. 3, hemisphere and valve base chamber position relationship change.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
In Fig. 1, Fig. 2, semispherical valve comprises valve body 2, be arranged on valve seat 3 on valve body 2, be arranged in valve body 2 eccentric valve rod perpendicular to valve seat center line 7, and be fixed on valve rod, hemisphere 4 that its sealing surface is corresponding with sealing surface of seat, described valve rod can support in the upper sliding sleeve 2.2 and low sleeve 2.3 that is arranged on valve body 2 with fluctuating, is provided with at valve body 2 inner chambers and can makes the floating space 2.1 of hemisphere Shang Xia 4.
In order to save material and convenient the installation, described valve rod is comprised of the upper valve rod 1 on same valve rod center line 8 and lower valve rod 9, the body of rod of upper valve rod 1 supports and is arranged in described upper sliding sleeve 2.2, the lower end of upper valve rod 1 is fixedly connected with the upper end of described hemisphere 4, the lower end of lower valve rod 9 is inserted in the low sleeve 2.3 of valve body 2 bottoms, the upper end of lower valve rod 9 is fixedly connected with the lower end of described hemisphere 4, and the body of rod of lower valve rod 9 lower ends can slide up and down in low sleeve 2.3.
When the needs throttle down, operation upper valve rod 1 is in the interior rotation of upper sliding sleeve 2.2, drive simultaneously hemisphere 4 and lower valve rod 9 and rotate together around valve rod center line 8, under the effect of two bias (referring to Fig. 3, Fig. 4), the hemisphere face of hemisphere 4 moves closer to the sealing surface of valve seat 3 until be close together.when by processing, install, and the pressure distribution on the valve seat 3 that is brought by two bias is uneven, when causing producing between the hemisphere face of hemisphere 4 and valve seat 3 sealing surfaces the sealing error and can not fit fully, be rotated further upper valve rod 1, hemisphere face extruding valve seat 3 sealing surfaces of hemisphere 4, because valve seat 3 is motionless, hemisphere 4 can be under the effect of extruding force, with upper, lower valve rod 1 and 9 moves up and down between upper sliding sleeve 2.2 and low sleeve 2.3 together, because the scope of error is little, hemisphere 4 is easier to automatically find accurately the position of oneself in floating space 2.1, two sealing surfaces are fit together fully.
When needs were opened valve, the same with prior art, operation upper valve rod 1 rotated with the direction opposite with throttle down, and the hemisphere face of hemisphere 4 is lifted off a seat 3 sealing surface gradually until separate fully.
In order to make hemisphere 4 after finding the sealing station of oneself accurately, the sealing surface of its hemisphere face and valve seat 3 is located under the state of complete gluing, sealing, be positioned at the lower end of described low sleeve 2.3 on valve body 2, be fixed with lower 6 that seals low sleeve 2.3 under sheds, cover has Compress Spring 5 on the step axle journal 9.1 of described lower valve rod 9 lower ends, the lower end of Compress Spring 5 is sitting in above described lower 6, Compress Spring 5 is supported between hemisphere 4 and lower 6 (referring to Fig. 1), after the valve rod 1 that stops operating, it is constant that its elastic force makes valve still remain on the sealing state of fitting fully;
When opening valve, rotation valve rod 1 makes hemisphere 4 hemisphere faces separate with the sealing surface of valve seat 3, and after the valve rod 1 that stops operating, the elastic force of Compress Spring 5 can make the separated state of hemisphere 4 hemisphere faces and valve seat 3 sealing surfaces remain unchanged (referring to Fig. 2) equally.
Fig. 3, Fig. 4 have shown the working principle of existing bidirectional eccentric semispherical valve, when namely needing throttle down (referring to Fig. 1), rotation valve rod drives hemisphere 4 and rotates together around valve rod center line 8, and the hemisphere face that makes the hemisphere 4 of semispherical valve moves closer to the sealing surface of valve seat 3 until be close together and close; In the time of need to opening valve (referring to Fig. 2), lift off a seat gradually 3 sealing surface of the hemisphere face of hemisphere 4 is until leave fully.
The utility model not only is confined to above-mentioned embodiment, can be in the situation that the constant conversion of carrying out various ways of its flesh and blood.In a word, every take flesh and blood of the present utility model as purport, all within protection domain of the present utility model.
Claims (3)
1. bidirectional eccentric automatic aligning seal semi ball valve, comprise valve body, be arranged on valve seat on valve body, be arranged in valve body perpendicular to the valve seat center line and with the valve rod of valve seat center line bias, and after being fixed on valve rod, rotating, its hemisphere face can the hemisphere corresponding with sealing surface of seat, it is characterized in that: described valve rod can support in the upper sliding sleeve and low sleeve that is arranged on valve body with fluctuating, is provided with the space that hemisphere is fluctuated at body cavity.
2. bidirectional eccentric automatic aligning seal semi ball valve as claimed in claim 1, it is characterized in that: described valve rod, formed by the upper valve rod and the lower valve rod that are on the same center line, the body of rod of upper valve rod supports and is arranged in described upper sliding sleeve, the lower end of upper valve rod is fixedly connected with described hemispheroidal upper end, the lower end of lower valve rod is inserted in the low sleeve of valve body lower portion, and the upper end of lower valve rod is fixedly connected with described hemispheroidal lower end.
3. bidirectional eccentric automatic aligning seal semi ball valve as claimed in claim 2, it is characterized in that: the lower end that is positioned at described low sleeve on valve body is fixed with lower that seals the low sleeve under shed, cover has Compress Spring, the lower end of Compress Spring to be sitting in above described lower on the step axle journal of described lower valve rod bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668949 CN202971992U (en) | 2012-12-07 | 2012-12-07 | Double-way eccentric automatic alignment sealing semi-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668949 CN202971992U (en) | 2012-12-07 | 2012-12-07 | Double-way eccentric automatic alignment sealing semi-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971992U true CN202971992U (en) | 2013-06-05 |
Family
ID=48513068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220668949 Expired - Fee Related CN202971992U (en) | 2012-12-07 | 2012-12-07 | Double-way eccentric automatic alignment sealing semi-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966753A (en) * | 2012-12-07 | 2013-03-13 | 青岛海纳重工集团公司 | Bidirectional and eccentric semispherical valve with automatic alignment and sealing |
| CN107940019A (en) * | 2017-12-30 | 2018-04-20 | 营口辽河药机制造有限公司 | A kind of new no dead angle powder outlet valve |
-
2012
- 2012-12-07 CN CN 201220668949 patent/CN202971992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966753A (en) * | 2012-12-07 | 2013-03-13 | 青岛海纳重工集团公司 | Bidirectional and eccentric semispherical valve with automatic alignment and sealing |
| CN107940019A (en) * | 2017-12-30 | 2018-04-20 | 营口辽河药机制造有限公司 | A kind of new no dead angle powder outlet valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206001037U (en) | self-cleaning ball valve | |
| CN202971992U (en) | Double-way eccentric automatic alignment sealing semi-ball valve | |
| CN102410381A (en) | Bidirectional hard seal ball valve for coal chemical industry | |
| CN201588966U (en) | Ultralow temperature ball valve | |
| CN202901322U (en) | Lining plastic butterfly valve | |
| CN110778735B (en) | Soft and hard double sealing ball valve | |
| CN102966753A (en) | Bidirectional and eccentric semispherical valve with automatic alignment and sealing | |
| CN202469060U (en) | Sealing structure of ball valve | |
| CN204459249U (en) | A kind of three eccentricity ball valve | |
| CN204264312U (en) | A kind of climbing robot compound foot | |
| CN201835792U (en) | Kelly cock valve | |
| CN204900909U (en) | Novel plug valve | |
| CN202371205U (en) | Rolling orbit sphere valve | |
| CN202188153U (en) | Bidirectional hard-seal fixed-type ball valve used in coal chemical industry | |
| CN102767689B (en) | Spherical rotary steam trap valve | |
| CN203214906U (en) | Midline butterfly valve | |
| CN209705157U (en) | A kind of temperature-sensitive automatic pressure-balancing piston spring | |
| CN208687002U (en) | A kind of orbit ball valve with spiral valve rod | |
| CN202432006U (en) | Novel ball valve | |
| CN203189780U (en) | High-pressure self-sealing spherical valve | |
| CN202629153U (en) | Built-in self-centering valve rod structure of ball valve | |
| CN220396554U (en) | Integrated high-temperature ball valve ball | |
| CN105065685A (en) | Single-bar zero-friction butterfly valve with guide groove | |
| CN201802884U (en) | Metal hard sealing butterfly valve with double butterfly plates | |
| CN202812265U (en) | Spreading type spherical surface gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20141207 |
|
| EXPY | Termination of patent right or utility model |