CN102364176A - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN102364176A CN102364176A CN2011103303407A CN201110330340A CN102364176A CN 102364176 A CN102364176 A CN 102364176A CN 2011103303407 A CN2011103303407 A CN 2011103303407A CN 201110330340 A CN201110330340 A CN 201110330340A CN 102364176 A CN102364176 A CN 102364176A
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- valve
- valve rod
- ball valve
- spheroid
- stuffing box
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Abstract
The invention relates to a ball valve comprising a valve body, a valve cover, a spherical valve plug and a valve rod, wherein the valve rod is fixedly connected with the spherical valve plug; a cambered outwards spherical body is arranged on the valve rod corresponding to the lower part of the valve rod; a sealing sleeve of encircling the spherical body is arranged in the valve body and provided with a concave spherical surface hermetically matched with the spherical body; and the valve body is also provided with a circle of step structure corresponding to the supporting sealing sleeve. The ball valve has the advantages of small rotation friction force of the valve rod, favorable sealing property and capability of adapting to slight inclining of the valve rod without leakage and the like.
Description
Technical field
The present invention relates to a kind of valve, specifically a kind of ball valve.
Background technique
The structure of existing ball valve generally is made up of valve body, valve junctor, ball, Stuffing box, filler, Gland, handle.Existing ball valve can be divided into two kinds, and a kind of is the club integrated type, and another kind is that club is split type, valve stem seal basically usefulness be mostly the V-type packing seal.The ball valve ball and the valve rod of split-type structural are connected to activity; Ball need be opened a groove flat be connected not rotatable relatively with the valve rod place; In practical application here for a long time in medium; Washing away with switch through after a while medium and to be easy to wearing and tearing, can cause and hold not in place or close not in placely, finally is to break away from fully to cause threshold switch to lose efficacy.Center with valve rod about the another kind, the sealing of club integrated type valve seat is difficult to accomplish that one puts, and valve rod has a drift angle all the time and causes the outer leakage of rushing down.V-type packing seal elasticity is too small, and sealing force is difficult to control, and how excessive general sealing force is; Cause frictional force excessive, filler is easy to kill, and makes the moment of torsion of valve overweight; Open or close need be bigger kinetic energy, cause the raising of unnecessary manufacture cost and use inconvenient.
More than two kinds of valves in order to seal, the filler that use on top is anti-heads, pressure is bigger between filler and the valve rod, and filler elasticity is little, causes frictional force bigger, has increased the switching torque of valve, is not easy to maintenance simultaneously.This type ball valve nominal pressure is little, and driving torque is big, and the big or electricity of operation labor intensity, cyclostrophic kinetic energy consumption are big, general manyly below the pressure medium of 1.6Mpa, use, and working life is shorter.
Summary of the invention
The problem that the present invention will solve is big, the problem such as leakage easily of the switching torque that improves ball valve in the background technique.
In order to overcome the above problems; The present invention provides a kind of ball valve; Comprise valve body, valve gap, spherical valve core, the valve rod that is fixedly connected with spherical valve core, be provided with the spheroid of an evagination on the said valve rod corresponding to the valve gap below, be provided with the stuffing box gland that is surrounded on spheroid in the said valve body; Said stuffing box gland is provided with the spill sphere that is sealed and matched with said spheroid work, and said valve body also is provided with a corresponding circle ledge structure that supports stuffing box gland.
The upper-end surface of said stuffing box gland and lower end surface are respectively equipped with around the upper groove of valve rod and low groove, are respectively equipped with in said upper groove and the low groove with it and make sealing trim ring and the seal washer that conical surface tensioner cooperates.
The truncation surface of said upper groove and sealing trim ring is all V-shaped, and the truncation surface of said low groove and seal washer all is reversed V-shape.
Said valve rod and spheroid are one.
Said valve rod and spherical valve core are one.
Said valve gap is provided with a plurality of adjustable bolts corresponding to the sealing trim ring.
Said stuffing box gland is that polytetrafluoroethylmaterial material is made.
Ball valve of the present invention; Valve rod is provided with a sphere structure; Stuffing box gland and sphere structure are sealed and matched, and the upper-end surface of stuffing box gland and lower end surface are respectively equipped with around the upper groove of valve rod and low groove, are respectively equipped with in said upper groove and the low groove and make sealing trim ring and the seal washer that conical surface tensioner cooperates with it; Utilize stuffing box gland to be sealed and matched at the sphere structure place of elasticity and valve rod preferably; It is little to have the valve rod rotation friction, and good airproof performance can adapt to the slight inclination of valve rod and advantage such as can not reveal.
Description of drawings
Accompanying drawing 2 is schematic representation that ball valve of the present invention is overlooked
Accompanying drawing 3 is local enlarged diagrams of Fig. 1
1 is valve body; 2 is spherical valve core; 3 is valve rod; 4 is valve gap; 7 is seal washer; 8 is stuffing box gland; 9 are the sealing trim ring; 10 is adjustable bolt; 11 is ledge structure; 13 is valve handle; 31 is spheroid; 81 is upper groove; 82 is low groove.
Embodiment
Below in conjunction with accompanying drawing a kind of ball valve of the present invention is described further.
Shown in Fig. 1, Fig. 2, Fig. 3; A kind of ball valve; Comprise valve body 1, valve gap 4, spherical valve core 2, the valve rod 3 that is fixedly connected with spherical valve core 2, drive valve rod 3, realize the switch of ball valve through valve handle 13; Be provided with the spheroid 31 of an evagination on the said valve rod 3 corresponding to valve gap 4 belows; Be provided with the stuffing box gland 8 that is surrounded on spheroid 31 in the said valve body 1, said stuffing box gland 8 is provided with the spill sphere that is sealed and matched with said spheroid 31 works, and said valve body 1 also is provided with a corresponding circle ledge structure 11 that supports stuffing box gland 8.Said stuffing box gland 8 fits tightly through the spheroid 31 on sphere and the valve rod 3 and reaches sealing effect, and when valve rod 3 tilted, sphere still fitted tightly in spheroid 31, and can not form the slit.
In the present embodiment, the upper-end surface of said stuffing box gland 8 and lower end surface are respectively equipped with around the upper groove 81 of valve rod 3 and low groove 82, are respectively equipped with in said upper groove 81 and the low groove 82 with it and make the sealing trim ring 9 and seal washer 7 that conical surface tensioner cooperates.Make stuffing box gland 8 have more elasticity through upper groove 81 and low groove 82, add respectively and make the sealing trim ring 9 and seal washer 7 that conical surface tensioner cooperates that make stuffing box gland 8 more closely fit in spheroid 31, this design makes sealing further improve with it.
The truncation surface of said upper groove 81 and sealing trim ring 9 is all V-shaped, and the truncation surface of said low groove 82 and seal washer 7 all is reversed V-shape.Certainly, also can do a little conversion, be rectangular like the truncation surface of groove, and sealing trim ring 9 is V-shaped and be reversed V-shape with seal washer 7 truncation surfaces.
Said valve rod 3 is one with spheroid 31, and said valve rod 3 is one with spherical valve core 2.The integral type design has reduced the slit that connection brings, and makes parts more firm, has prolonged the life-span of parts, the trouble that has reduced maintenance and changed.
Said valve gap 4 is provided with a plurality of adjustable bolts 10 corresponding to sealing trim ring 9.Through regulating the length that adjustable bolt 10 stretches out valve gap 4, can reach the tensioner degree of regulating sealing trim ring 9 and stuffing box gland 8, reached seal degree and the frictional force size of adjusting stuffing box gland 8 then with spheroid 31.
Said stuffing box gland 8 is made for polytetrafluoroethylmaterial material.Teflon also is Furtulon, has the little characteristics of friction factor, can make further that the frictional force between valve rod 3 and the stuffing box gland 8 is little, makes that moment of torsion was little, easy to operate when valve rod 3 rotated.In this enforcement, stuffing box gland 8, sealing trim ring 9 and seal washer 7 are that polytetrafluoroethylmaterial material makes.
Ball valve of the present invention; Valve rod 3 is provided with a sphere structure; Stuffing box gland 8 is sealed and matched with sphere structure, and the upper-end surface of stuffing box gland 8 and lower end surface are respectively equipped with around the upper groove 81 of valve rod 3 and low groove 82, is respectively equipped with in said upper groove 81 and the low groove 82 and makees the sealing trim ring 9 and seal washer 7 that conical surface tensioner cooperates with it; Utilize stuffing box gland 8 to be sealed and matched at the sphere structure place of elasticity and valve rod 3 preferably; It is little to have valve rod 3 rotation frictions, and good airproof performance can adapt to the slight inclination of valve rod 3 and advantage such as can not reveal.
The invention is not restricted to above embodiment and conversion.
Claims (8)
1. ball valve; Comprise valve body (1), spherical valve core (2), the valve rod (3) that is connected with spherical valve core (2); It is characterized in that: said valve rod (3) is provided with the spheroid (31) of an evagination; On the axle center that is centered close to valve rod (3) of said spheroid (31), be provided with the stuffing box gland (8) that is surrounded on spheroid (31) in the said valve body (1), said stuffing box gland (8) is provided with the spill sphere that is sealed and matched with said spheroid (31) work.
2. a kind of ball valve according to claim 1; It is characterized in that: the upper-end surface of said stuffing box gland (8) and lower end surface are respectively equipped with upper groove (81) and the low groove (82) around valve rod, are respectively equipped with in said upper groove (81) and the low groove (82) with it and make sealing trim ring (9) and the seal washer (7) that conical surface tensioner cooperates.
3. a kind of ball valve according to claim 1 is characterized in that: the truncation surface of said upper groove (81) and sealing trim ring (9) is all V-shaped, and the truncation surface of said low groove (82) and seal washer (7) all is reversed V-shape.
4. a kind of ball valve according to claim 1 is characterized in that: said valve rod (3) is an one with spheroid (31).
5. a kind of ball valve according to claim 1 is characterized in that: said valve rod (3) is an one with spherical valve core (2).
6. a kind of ball valve according to claim 1 is characterized in that: said ball valve also is provided with the valve gap (4) that is installed on directly over the spheroid (31).
7. a kind of ball valve according to claim 6 is characterized in that: said valve gap (4) is provided with a plurality of adjustable bolts (10) corresponding to the sealing trim ring.
8. according to each described a kind of ball valve in the claim 1 to 7, it is characterized in that: said stuffing box gland (8) is made for polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103303407A CN102364176A (en) | 2011-10-26 | 2011-10-26 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103303407A CN102364176A (en) | 2011-10-26 | 2011-10-26 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364176A true CN102364176A (en) | 2012-02-29 |
Family
ID=45690758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103303407A Pending CN102364176A (en) | 2011-10-26 | 2011-10-26 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102364176A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221830A (en) * | 2015-11-03 | 2016-01-06 | 航天长征化学工程股份有限公司 | Low-leakage ball valve |
| CN105333177A (en) * | 2015-11-25 | 2016-02-17 | 江苏华太电力仪表有限公司 | Explosion-proof needle valve |
| CN105605302A (en) * | 2015-11-02 | 2016-05-25 | 苏州市淞舜五金有限公司 | Anti-leakage brake valve |
| CN111692368A (en) * | 2020-06-16 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Electric vacuum ball valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667265Y (en) * | 2003-12-18 | 2004-12-29 | 张辉 | Ball shape valve stem valve |
| CN101970919A (en) * | 2007-12-20 | 2011-02-09 | 埃克索莫克斯国际股份有限公司 | Valve |
| CN102135208A (en) * | 2011-01-18 | 2011-07-27 | 尤隐森 | Ball rod valve |
| CN202327178U (en) * | 2011-10-26 | 2012-07-11 | 宣达实业集团有限公司 | Ball valve |
-
2011
- 2011-10-26 CN CN2011103303407A patent/CN102364176A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667265Y (en) * | 2003-12-18 | 2004-12-29 | 张辉 | Ball shape valve stem valve |
| CN101970919A (en) * | 2007-12-20 | 2011-02-09 | 埃克索莫克斯国际股份有限公司 | Valve |
| CN102135208A (en) * | 2011-01-18 | 2011-07-27 | 尤隐森 | Ball rod valve |
| CN202327178U (en) * | 2011-10-26 | 2012-07-11 | 宣达实业集团有限公司 | Ball valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605302A (en) * | 2015-11-02 | 2016-05-25 | 苏州市淞舜五金有限公司 | Anti-leakage brake valve |
| CN105221830A (en) * | 2015-11-03 | 2016-01-06 | 航天长征化学工程股份有限公司 | Low-leakage ball valve |
| CN105333177A (en) * | 2015-11-25 | 2016-02-17 | 江苏华太电力仪表有限公司 | Explosion-proof needle valve |
| CN111692368A (en) * | 2020-06-16 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Electric vacuum ball valve |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120229 |