CN203258100U - Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing - Google Patents
Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing Download PDFInfo
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- CN203258100U CN203258100U CN 201320293913 CN201320293913U CN203258100U CN 203258100 U CN203258100 U CN 203258100U CN 201320293913 CN201320293913 CN 201320293913 CN 201320293913 U CN201320293913 U CN 201320293913U CN 203258100 U CN203258100 U CN 203258100U
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- valve seat
- valve body
- seat
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Abstract
The utility model discloses a mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing. The mounted-type ball valve comprises a valve body, a valve cover, a sphere, valve seats, a valve rod and a valve rod driving device. Each valve seat is characterized in that the outer circumferential face of the valve seat is in a high-low step shape, the outer circumferential face of the valve seat is provided with a first step face, a second step face, a third step face and a fourth step face in sequence from the inner end to the outer end, a sealing ring is arranged between the second step face of the valve seat and the valve body, a pressing plate is clamped between the first step face of the valve seat and the valve body, and sealing rings are arranged between the pressing plate and the first step face of the valve seat and between the pressing plate and the valve body. The valve body is provided with a valve body through hole in the position corresponding to each valve seat, wherein the inner end of the valve body through hole is communicated onto the first step face of the valve seat, a sealing piece is fixedly arranged at the outer end of the valve body through hole, and the valve body through hole, the pressing plate, the first step face of the valve seat and a shoulder step between the first step face of the valve seat and the second step face of the valve seat form an airtight cavity. Therefore, by adopting the structure, online dismounting, mounting and maintaining of the ball valve can be achieved.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of upper-mounting type ball valve with two way sealed function of dismounting online.
Background technique
At present; Existing upper-mounting type ball valve; Its structure generally includes valve body as shown in Figure 1; Valve gap; Spheroid; Valve seat; Valve rod; Valve rod driving device; Valve gap is installed on valve body; Spheroid is installed in valve body; Described valve rod is arranged in valve gap; Spheroid in one end of valve rod and valve body is affixed; The other end of valve rod is connected with valve rod driving device; Described valve seat is installed between spheroid and valve body; And inner end face and the ball seal of described valve seat are close to; Be equiped with Compress Spring between the outer end end face of valve seat and valve body; Simultaneously; Also offer a through hole that is used for the inner components such as installation or removal spheroid and valve seat above valve body.Under normal circumstances, the pretightening force of Compress Spring will be guaranteed the sealing that fits tightly of valve seat and spheroid, and valve rod driving device drives spheroid by valve rod and does the rotation of 0 ~ 90 °, thereby reach the purpose of opening and closing ball valve.Due to the pretightening force that has Compress Spring, therefore when the installation or removal ball valve, must apply external force on two valve seats of the left and right sides, make two valve seats of the left and right sides to the direction motion that breaks away from spheroid, only have after two valve seats and spheroid break away from fully, can dismantle just now spheroid or spheroid is installed.Make two valve seats break away from spheroid for the pretightening force that overcomes Compress Spring, usually need to apply external force on valve seat by the method for machinery.Be a kind of method that applies external force on valve seat as shown in Figure 2, but the method need to remove ball valve from pipeline, then the passage by two ends, ball valve left and right applies external force to valve seat and makes it break away from spheroid, at last dismounting or spheroid is installed again.Owing to adopting the method, ball valve must be disassembled from pipeline, yet, for some upper-mounting type ball valve, adopt as valve body and two ends pipeline the structure that is welded to connect, adopt the method dismounting ball valve, the ball valve that must will be welded on pipeline cuts down from pipeline, will certainly affect like this quality of ball valve and pipeline.In order to address this problem, perforate on valve body is also arranged, come slide and movable valve base from the valve body outside, but perforate also must increase the possibility of ball valve external leakage on valve body; Also have by adopting the mechanical means of other slide and movable valve base, still for larger-size ball valve, the pretightening force of Compress Spring is usually also larger, therefore, adopts other mechanical means to come the slide and movable valve base difficulty also larger.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of better upper-mounting type ball valve of online dismounting and maintenance and valve base seal property of not only can realizing.
For achieving the above object; The utility model provides a kind of upper-mounting type ball valve with two way sealed function of dismounting online; Comprise valve body; Valve gap; Spheroid; Valve seat; Valve rod; Valve rod driving device; Valve gap is installed on valve body; Spheroid is installed in valve body; Described valve rod is arranged in valve gap; Spheroid in one end of valve rod and valve body is affixed; The other end of valve rod is connected with valve rod driving device; All be equiped with a valve seat between the two ends, left and right of described spheroid and valve body; Inner end face and the spheroid of described valve seat are close to sealing; The outer peripheral surface of described valve seat is the high low platform scalariform; And the outer peripheral surface of described valve seat is disposed with the First terrace from the inner to the outer end; The second step face; The 3rd step surface; The 4th step surface; The diameter of described valve seat First terrace is less than the diameter of valve seat second step face; Be provided with seal ring between valve seat second step face and valve body; Clamped pressing plate between valve seat First terrace and valve body; Described pressing plate and valve seat First terrace; Be provided with seal ring between valve body; Described valve body also offers valve hole in the position of corresponding each valve seat; The inner of described valve hole connects to valve seat First terrace; The outer end of described valve hole is fixed with Sealing; And described valve hole; Pressing plate; Shoulder rank between valve seat First terrace and valve seat First terrace and valve seat second step face form an airtight cavity each other; Be equiped with Compress Spring between shoulder rank between described valve seat second step face and valve seat the 3rd step surface and valve body; Also offer valve seat through-hole on described valve seat; One end of described valve seat through-hole extends on the inner end face of valve seat; The other end of described valve seat through-hole extends on the 3rd step surface of valve seat; Shoulder rank between described valve seat the 3rd step surface and valve seat the 4th step surface; Also be formed with a holding cavity between valve seat the 4th step surface and valve body; Be equiped with O type rubber seal in described holding cavity.
The beneficial effects of the utility model are: adopt said structure, when online valve needs dismounting or valve seat to need on-line maintenance, can at first valve gap be disassembled from valve body, open again the Sealing on the valve hole outer end, and inject fluid (gas or liquid) in described valve hole, under the effect of fluid certain pressure, will impel valve seat and spheroid to be separated from each other, until throw off fully, just can take out spheroid easily this moment from valve body.Equally, adopt reverse procedure, can realize easily the installation to valve seat, spheroid and ball valve internals.Separately, when ball valve normally uses, because the outer end of valve hole is fixed with Sealing, can prevent effectively that therefore foreign matter etc. from entering into closed cavity and affecting the normal use of ball valve.In sum, the utility model provides a kind of ball valve of realizing online dismounting and maintenance, is convenient to the user to the on-line operation of ball valve.
In addition, because the utility model is equiped with Compress Spring between the shoulder rank between described valve seat second step face and valve seat the 3rd step surface and valve body; Set up valve seat through-hole on described valve seat; Be equiped with O type rubber seal in described holding cavity, therefore in the ball valve normal operation, when the pressure of valve seat suction side during higher than the pressure of valve seat outlet side, the medium of valve inlet side just can enter into by the gap between valve seat the 4th step surface and valve body the holding cavity of the described O of being equipped with type rubber seal, make described valve body suction side the valve seat here under the acting in conjunction of this pressure medium and Compress Spring pretightening force, reach with spheroid and be close to better sealing; When the pressure of valve seat suction side during lower than the pressure of valve seat outlet side, the medium of valve export side can enter into by the gap between described valve seat through-hole and valve seat the 3rd step surface and valve body the holding cavity of the described O of being equipped with type rubber seal, make described valve outlet side the valve seat here under the acting in conjunction of this pressure medium and Compress Spring pretightening force, reach with spheroid and be close to better sealing.In sum, for ball valve provided by the utility model, no matter the pressure of ball valve entrance point and which end of outlet end is higher, and the valve seat on this ball valve and spheroid all can keep sealing well, thereby has greatly improved the overall sealing performance of ball valve.
It is screw that the utility model can further be set to described valve hole, the described bolt of Sealing for coordinating with described screw bolt that is installed in the valve hole outer end.
Adopt said structure, the bolt that the preferred screw of described valve hole, described Sealing preferably coordinate with described screw bolt can make the dismounting of described valve hole and described Sealing more convenient, more is convenient to user's on-line operation.
The utility model also can further be set to the L-shaped structure of described pressing plate, and the transverse end of L shaped structure pressing plate is plugged between described valve seat First terrace and valve body, fixes by screw between vertical end of L shaped structure pressing plate and valve body.Adopt said structure, can guarantee that described pressing plate is connected with the firm of valve body, when described pressing plate needs dismounting, also very convenient simultaneously.
Description of drawings
Fig. 1 is the structural representation of prior art;
Fig. 2 is the schematic diagram of existing a kind of conventional dismounting upper-mounting type ball valve;
Fig. 3 is structural drawing of the present utility model;
Fig. 4 is the I section enlarged view of Fig. 3.
Embodiment
As Fig. 3; Provided a kind of upper-mounting type ball valve with two way sealed function of dismounting online shown in 4; Comprise valve body 1; Valve gap 2; Spheroid 3; Valve seat 4; Valve rod 5; Valve rod driving device 6; Valve gap 2 is installed on valve body 1; Spheroid 3 is installed in valve body 1; Described valve rod 5 is arranged in valve gap 2; Spheroid 3 in one end of valve rod 5 and valve body 1 is affixed; The other end of valve rod 5 is connected with valve rod driving device 6; All be equiped with a valve seat 4 between the two ends, left and right of described spheroid 3 and valve body 1; Inner end face and the spheroid 3 of described valve seat 4 are close to sealing; The outer peripheral surface of described valve seat 4 is the high low platform scalariform; And the outer peripheral surface of described valve seat 4 is disposed with First terrace 41 from the inner to the outer end; Second step face 42; The 3rd step surface 43; The 4th step surface 44; The diameter of described valve seat First terrace 41 is less than the diameter of valve seat second step face 42; Be provided with seal ring 7 between valve seat second step face 42 and valve body 1; Clamped pressing plate 8 between valve seat First terrace 41 and valve body 1; The L-shaped structure of described pressing plate 8; The transverse end 81 of L shaped structure pressing plate 8 is plugged between described valve seat First terrace 41 and valve body 1; Transverse end 81 and the valve seat First terrace 41 of L shaped structure pressing plate 8; Be provided with seal ring 7 between valve body 1; Fixing by screw 9 between vertical end 82 of L shaped structure pressing plate 8 and valve body 1.Described valve body 1 also offers valve hole 101 in the position of corresponding each valve seat 4, the inner of described valve hole 101 connects to valve seat First terrace 41, the outer end of described valve hole 101 is fixed with Sealing 10, and the shoulder rank between described valve hole 101, pressing plate 8, valve seat First terrace 41 and valve seat First terrace 41 and valve seat second step face 42 form an airtight cavity 11 each other, the preferred screw of described valve hole 101, the bolt that described Sealing 10 preferably coordinates with described screw bolt.Be equiped with Compress Spring 12 between shoulder rank between described valve seat second step face 42 and valve seat the 3rd step surface 43 and valve body 1, also offer valve seat through-hole 45 on described valve seat 4, one end of described valve seat through-hole 45 extends on the inner end face of valve seat 4, the other end of described valve seat through-hole 45 extends on the 3rd step surface 43 of valve seat, also be formed with a holding cavity 13 between shoulder rank between described valve seat the 3rd step surface 43 and valve seat the 4th step surface 44, valve seat the 4th step surface 44 and valve body 1, be equiped with O type rubber seal 14 in described holding cavity 13.
In sum, adopt upper-mounting type ball valve provided by the utility model, can realize that not only online dismounting and maintenance and valve seat 4 are better with the sealability of spheroid 3.
Claims (3)
1. upper-mounting type ball valve with two way sealed function of dismounting online; Comprise valve body; Valve gap; Spheroid; Valve seat; Valve rod; Valve rod driving device; Valve gap is installed on valve body; Spheroid is installed in valve body; Described valve rod is arranged in valve gap; Spheroid in one end of valve rod and valve body is affixed; The other end of valve rod is connected with valve rod driving device; All be equiped with a valve seat between the two ends, left and right of described spheroid and valve body; Inner end face and the spheroid of described valve seat are close to sealing; It is characterized in that: the outer peripheral surface of described valve seat is the high low platform scalariform; And the outer peripheral surface of described valve seat is disposed with the First terrace from the inner to the outer end; The second step face; The 3rd step surface; The 4th step surface; The diameter of described valve seat First terrace is less than the diameter of valve seat second step face; Be provided with seal ring between valve seat second step face and valve body; Clamped pressing plate between valve seat First terrace and valve body; Described pressing plate and valve seat First terrace; Be provided with seal ring between valve body; Described valve body also offers valve hole in the position of corresponding each valve seat; The inner of described valve hole connects to valve seat First terrace; The outer end of described valve hole is fixed with Sealing; And described valve hole; Pressing plate; Shoulder rank between valve seat First terrace and valve seat First terrace and valve seat second step face form an airtight cavity each other; Be equiped with Compress Spring between shoulder rank between described valve seat second step face and valve seat the 3rd step surface and valve body; Also offer valve seat through-hole on described valve seat; One end of described valve seat through-hole extends on the inner end face of valve seat; The other end of described valve seat through-hole extends on the 3rd step surface of valve seat; Shoulder rank between described valve seat the 3rd step surface and valve seat the 4th step surface; Also be formed with a holding cavity between valve seat the 4th step surface and valve body; Be equiped with O type rubber seal in described holding cavity.
2. the upper-mounting type ball valve with two way sealed function of a kind of dismounting online according to claim 1, it is characterized in that: described valve hole is screw, the described bolt of Sealing for coordinating with described screw bolt that is installed in the valve hole outer end.
3. the upper-mounting type ball valve with two way sealed function of a kind of dismounting online according to claim 1, it is characterized in that: the L-shaped structure of described pressing plate, the transverse end of L shaped structure pressing plate is plugged between described valve seat First terrace and valve body, fixes by screw between vertical end of L shaped structure pressing plate and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293913 CN203258100U (en) | 2013-05-27 | 2013-05-27 | Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293913 CN203258100U (en) | 2013-05-27 | 2013-05-27 | Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203258100U true CN203258100U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320293913 Expired - Lifetime CN203258100U (en) | 2013-05-27 | 2013-05-27 | Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203258100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256400A (en) * | 2013-05-27 | 2013-08-21 | 超达阀门集团股份有限公司 | Top assembling type ball valve with bidirectional sealing function and capable of achieving on-line disassembly and assembly |
-
2013
- 2013-05-27 CN CN 201320293913 patent/CN203258100U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256400A (en) * | 2013-05-27 | 2013-08-21 | 超达阀门集团股份有限公司 | Top assembling type ball valve with bidirectional sealing function and capable of achieving on-line disassembly and assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |