CN203614793U - Ball valve - Google Patents
Ball valve Download PDFInfo
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- CN203614793U CN203614793U CN201320817678.XU CN201320817678U CN203614793U CN 203614793 U CN203614793 U CN 203614793U CN 201320817678 U CN201320817678 U CN 201320817678U CN 203614793 U CN203614793 U CN 203614793U
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- valve
- ball
- fixture
- valve seat
- exterior edge
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Abstract
The utility model relates to a ball valve. The ball valve comprises a fixator and a valve seat, the fixator is located between a valve ball and a valve body, the fixator is in sealing connection with the valve body through a sealing element, the valve seat is located between the fixator and the valve ball and is in sealing connection with the valve ball, a radially arranged outer end face of the valve seat is in sealing connection with a radially arranged outer end face of the fixator, and an axial end face of the valve seat is located in a gap between the valve body and the valve ball. The fixator is in sealing connection with the valve body through the sealing element, the valve seat is in sealing connection with the valve ball, the valve seat is located between the valve ball and the fixator, the axial end face of the valve seat is located in the gap between the valve body and the valve ball, so that the radially arranged outer end face of the fixator is merely required to move to be in contact with the radially arranged outer end face of the valve seat, and the outer end face of the valve seat is in sealing connection with the outer end face of the fixator. In the process, the moving distance of the fixator is short, and convenient on-line mounting and dismounting can be achieved.
Description
Technical field
The utility model relates to a kind of valve manufacture technology field, specifically relates to a kind of ball valve.
Background technique
Ball valve is reliable owing to having sealing, and feature simple in structure, easy to maintenance, becomes one of widely used valve.In ball valve, upper-mounting type ball valve have outer leak source few, without pipe stress centering flange impact, can realize the advantages such as on-line maintenance and be widely used.And for small-bore upper dress formula valve, due to restrictions such as valve mechanism length, operating spaces, realize reliable structure design, convenient on-line maintenance is all more difficult.
Publication number is that the patent documentation of CN102748497A discloses a kind of used at ultra-low temperature upper-mounting type ball valve, comprises valve body 1, spheroid 2, valve seat 16, valve seat fixture 5.Valve seat 16 is arranged in valve seat fixture 5 grooves and is tightly connected with spheroid 2, pre-load nut 3 adopts and is threaded with valve seat fixture 5, pre-load nut 3 circumference are provided with auxiliary hole, when dismounting, can, by extracting tool insertion process hole, pre-load nut 3 be rotated, simultaneously, under the drive of pre-load nut 3, valve seat fixture 5 will move to the side away from spheroid; In the time that the distance between import and export valve seat fixture 5 is greater than spheroid width, spheroid can be taken out in valve pocket, remaining parts also can be taken out successively.Installation process in contrast.
In the unloading process of above-mentioned ball valve, need to make valve seat fixture 5 depart from spheroid and to moving away from spheroid one side, this distance is relatively long, and the long stroke of valve seat fixture 5 must need online mounting tool to provide enough large power just can reach dismounting requirement, and owing to being subject to the restriction of the factor such as structure length and operating space of small-bore valve seat construction, the more difficult realization of above-mentioned ball valve is online dismounting easily, and, because the Sealing between valve seat fixture 5 in disassembly process and valve body 1 is also followed long distance moving, can cause sealing part abrasion serious, finally cause the working life of this ball valve shorter.
Model utility content
For this reason, technical problem to be solved in the utility model is that the unreasonable distance that causes fixture to move to valve body of the structural design of existing upper-mounting type ball valve is larger, finally causes online dismounting difficulty, the problem that working life is lower; The utility model, by the structure of appropriate design fixture, shortens the distance that fixture moves to valve body, realizes online dismounting function easily.
For solving the problems of the technologies described above, a kind of ball valve of the present utility model, comprise the fixture and the valve seat that are positioned between valve ball and valve body, described fixture and described valve body are tightly connected by Sealing, described valve seat is between described fixture and described valve ball, and be tightly connected with described valve ball, the exterior edge face that the exterior edge face being disposed radially of described valve seat and described fixture are disposed radially is for being tightly connected, in the space of the axial end of described valve seat between described valve body and described valve ball.
The sealing surface that the exterior edge face that the exterior edge face being disposed radially of described valve seat and described fixture are disposed radially forms is sphenoid surface.
On the radial outer end face of described fixture, form wedge-shaped impression, on the radial outer end face of described valve seat, be shaped to wedge shape projection; Described wedge shape projection is inserted in described wedge-shaped impression and is realized and being tightly connected.
Between the exterior edge face of the bottom land of described wedge-shaped impression and described wedge shape projection, there is sealed airspace, in described sealed airspace, be provided with pad or rubber o-ring.
The sealing surface that the exterior edge face that the exterior edge face being disposed radially of described valve seat and described fixture are disposed radially forms is arc surface.
Described valve body is provided with the pin-and-hole that is communicated with described fixture on a side outer wall that approaches described valve ball, and described fixture is provided with the groove coordinating with described pin-and-hole; When rigging position, described pin-and-hole and described groove position are just right, are suitable for inserting limiting tool spacing to described fixture; When the working position, the position of described pin-and-hole and the described groove segment distance that staggers; Described fixture is resisted against on described valve seat.
Described valve seat is coordinating side to form boss with described valve ball, described boss mates with the exterior edge face of described valve ball with surface of contact described valve ball.
Between described fixture and the axial end of described valve body, be also provided with pressure ring and spring; Described pressure ring is sheathed on the end of described fixture, and described spring is resisted against between described pressure ring and described valve body, in the space of described Sealing between described fixture and described pressure ring.
Described spring is cylindrical spring, wavy spring or belleville spring.
Described Sealing is some stuffing box packing, and described stuffing box packing is taper, V-arrangement or square.
Technique scheme of the present utility model has the following advantages compared to existing technology,
1, in the ball valve in the utility model, valve seat is between fixture and valve ball, and the exterior edge face being disposed radially of valve seat and the exterior edge face that fixture is disposed radially are for being tightly connected, in the space of the axial end of valve seat between valve body and valve ball.When this ball valve assembling, first fixture is arranged in valve body, utilize frock that fixture is pushed to after valve body one end reserves the required space of placement valve ball fixture to carry out spacing, then valve seat is put into together with valve ball to valve body, valve seat is between fixture and valve ball, cancel after fixture spacing, fixture moves to valve ball one end, while moving to valve seat place, realize being tightly connected between valve seat and fixture, complete after above-mentioned assembly process, between above-mentioned each adjacent component, all realize and being tightly connected, ball valve now can normally use.Can find out, in said structure, after the exterior edge face being disposed radially of fixture only need move to and contact with the exterior edge face being disposed radially of valve seat, the exterior edge face of valve seat exterior edge face and fixture is realized and being tightly connected.In this process, the distance that fixture moves is shorter, can realize online dismounting easily, and meanwhile, the displacement distance of the Sealing between fixture and valve body, also along with shortening, reduces the wearing and tearing of Sealing, extends the working life of ball valve.And, when on-line maintenance, utilize frock that fixture is moved to valve body one end again, directly valve ball is pulled out together with valve seat, then change on demand component, keep in repair very convenient.
2, in the utility model, the sealing surface that the exterior edge face being disposed radially of valve seat and the exterior edge face that fixture is disposed radially form is sphenoid surface, as long as realizing sealing, the one side that has two inclined-planes in sphenoid surface can realize the sealing between valve seat and fixture, compare conventional seals structure, reduced the machining accuracy of sealing surface.Particularly, on the radial outer end face of fixture, form wedge-shaped impression, on the radial outer end face of valve seat, be shaped to wedge shape projection; Wedge shape projection is inserted in wedge-shaped impression and is realized and being tightly connected, and it is also the mode of operation easily realizing that wedge shape projection is inserted in wedge-shaped impression.Between the exterior edge face of the bottom land of wedge-shaped impression and wedge shape projection, can also there is sealed airspace, in sealed airspace, be provided with pad or rubber o-ring, further strengthen sealing effect.
3, in the utility model, valve body is provided with the pin-and-hole that is communicated with fixture on a side outer wall that approaches valve ball, fixture is provided with the groove coordinating with pin-and-hole, and when rigging position, pin-and-hole and groove position are just right, be suitable for inserting limiting tool spacing to fixture, pack into after valve ball and valve seat, can remove frock, when the working position, pin-and-hole will with the position of the groove segment distance that staggers, fixture can be resisted against on valve seat.In pin-and-hole, inserting frock, that fixture is carried out to spacing mode of operation is simple and easy to do.
4, in the utility model, valve seat is coordinating side to form boss with valve ball, boss mate with the exterior edge face of valve ball with surface of contact valve ball, realize the sealing of valve ball and valve seat by the surface of contact of this coupling, reduce the sealing area of the two, reduce the workload that adds man-hour for sealing surface, also reduced the frictional strength between sealing surface simultaneously.
5,, in the utility model, between fixture and the axial end of valve body, be also provided with pressure ring and spring; Pressure ring is sheathed on the end of fixture, and spring is resisted against between pressure ring and valve body, in the space of Sealing between fixture and pressure ring.When cancelling after fixture spacing, under the spring-back force effect of spring, pressure ring moves with fixture, has guaranteed that the Sealing between pressure ring and fixture is motionless, to prevent that Sealing from wearing and tearing because of mobile.Initial pretightening force when the spring-back force of spring can also provide the exterior edge face of valve seat and the exterior edge face of fixture to be tightly connected, the initial pretightening force also can provide valve seat boss and valve ball to be tightly connected time.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of ball valve of the present utility model;
Fig. 2 is the structural representation that pad is set in the seal clearance between valve seat and fixture;
Fig. 3 is the structural representation that rubber o-ring is set in the seal clearance between valve seat and fixture;
Fig. 4 is that the wedge-type seal face between valve seat and fixture is the structural representation of an inclined-plane sealing.
In figure, reference character is expressed as: 11-valve ball, 12-valve body, 121-pin-and-hole, 13-fixture, 131-groove, 14-valve seat, 141-boss, 15-Sealing, 16-sealing surface, 17-seal clearance, 171-pad, 172-rubber o-ring, 18-pressure ring, 19-spring.
Embodiment
Figure 1 shows that a kind of ball valve that the utility model embodiment provides, comprise the fixture 13 and the valve seat 14 that are positioned between valve ball 11 and valve body 12, fixture 13 is tightly connected by Sealing 15 with valve body 12, valve seat 14 is between fixture 13 and valve ball 11, and be tightly connected with valve ball 11, the exterior edge face that the exterior edge face being disposed radially of valve seat 14 and fixture 13 are disposed radially is for being tightly connected, in the space of the axial end of valve seat 14 between valve body 12 and valve ball 11.
The assembly process of the utility model ball valve is: first fixture 13 is arranged in valve body 12, utilize frock that fixture 13 is pushed to after valve body 12 one end reserve the required space of placement valve ball 11 fixture 13 to carry out spacing, then valve seat 14 is put into together with valve ball 11 to valve body 12, valve seat 14 is between fixture 13 and valve ball 11, and in the space of the axial end of valve seat 14 between valve body 12 and valve ball 11; Cancel after fixture 13 spacing, fixture 13 moves to valve ball 11 one end, and while moving to valve seat 14 place, the exterior edge face realization that the exterior edge face being disposed radially of valve seat 14 and fixture 13 are disposed radially is tightly connected.Fixture 13 is realized and being tightly connected by Sealing 15 with valve body 12, and valve seat is same with valve ball is to be tightly connected.Complete after above-mentioned assembly process, between above-mentioned each adjacent component, all realize and being tightly connected, ball valve now can normally use.When on-line maintenance, utilize frock that fixture is moved to valve body one end again, directly valve ball is pulled out together with valve seat, then change on demand component.
For the ease of realizing being tightly connected of fixture and valve base chamber, the present embodiment provides the one form that is tightly connected particularly, the sealing surface 16 that is the exterior edge face being disposed radially of valve seat 14 and the exterior edge face formation that fixture 13 is disposed radially is sphenoid surface, particularly, on the radial outer end face of fixture 13, form wedge-shaped impression, on the radial outer end face of valve seat 14, be shaped to wedge shape projection; Wedge shape projection is inserted in wedge-shaped impression and is realized and being tightly connected, and can realize the sealing between valve seat and fixture as long as two inclined-planes in sphenoid surface have one side to realize sealing, as shown in Figure 4, has reduced the machining accuracy of wedge-type seal face.It is also the mode of operation easily realizing that wedge shape projection is inserted in wedge-shaped impression.Between the exterior edge face of the bottom land of wedge-shaped impression and wedge shape projection, can also there is sealed airspace 17, as preferably, as shown in Figures 2 and 3, in sealed airspace 17, be provided with pad 171 or rubber o-ring 172, to strengthen sealing effect, it can be also other sealing material with sealing.
As a kind of distressed structure of above-mentioned sealing configuration, the sealing surface 16 that the exterior edge face that the exterior edge face being disposed radially of valve seat 14 and fixture 13 are disposed radially forms can also be arc surface, and the sealing surface requirement on machining accuracy of circular arc is lower, easily realizes sealing.Certainly sealing surface can also be other shape, as long as can play seal action.
As the concrete form of limit structure between valve body in the utility model 12 and fixture 13, as shown in Figure 1, valve body 12 is provided with the pin-and-hole 121 that is communicated with fixture 13 on a side outer wall that approaches valve ball 11, and fixture 13 is provided with the groove 131 coordinating with pin-and-hole 121; When rigging position, pin-and-hole 121 is just right with groove 131 positions, is suitable for inserting limiting tool spacing to fixture 13; Pack into after valve ball and valve seat, can remove frock, when the working position, pin-and-hole 121 and the position of groove 131 segment distance that staggers; Fixture 13 is resisted against on valve seat 14.In pin-and-hole 121, inserting frock, that fixture 13 is carried out to spacing mode of operation is simple and easy to do.
In order to reduce the requirement of the machining accuracy to valve seat 14, valve seat 14 is coordinating side to form boss 141 with described valve ball 11, boss 141 mate with the exterior edge face of valve ball 11 with surface of contact valve ball 11, realize the sealing of valve ball 11 and valve seat 14 by the surface of contact of this coupling, reduce the sealing area of the two, reduce the workload that adds man-hour for sealing surface, also reduced the frictional strength between sealing surface simultaneously.
Between the axial end of fixture 13 and valve body 12, be also provided with pressure ring 18 and spring 19; Pressure ring 18 is sheathed on the end of fixture 13, and spring 19 is resisted against between pressure ring 18 and valve body 12, in the space of Sealing 15 between fixture 13 and pressure ring 18.When cancelling after fixture 13 spacing, under the spring-back force effect of spring 19, pressure ring 18 moves with fixture 13, has guaranteed that the Sealing 15 between pressure ring 18 and fixture 13 is motionless, to prevent that Sealing 15 from wearing and tearing because of movement.Initial pretightening force when the spring-back force of spring 19 can also provide the exterior edge face of valve seat 14 and the exterior edge face of fixture 13 to be tightly connected, the initial pretightening force also can provide valve seat boss 141 and valve ball 11 to be tightly connected time.
Above-mentioned spring 19 can be chosen as cylindrical spring, wavy spring or belleville spring.Above-mentioned Sealing 15 is some stuffing box packing, and stuffing box packing is taper, V-arrangement or square.Can select different springs and Sealing according to different operations.This often knows for the known of those skilled in the art, is not described in detail herein.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And among the protection domain that the apparent variation of being extended out thus or variation are still created in the utility model.
Claims (10)
1. a ball valve, comprise the fixture (13) and the valve seat (14) that are positioned between valve ball (11) and valve body (12), described fixture (13) is tightly connected by Sealing (15) with described valve body (12), described valve seat (14) is positioned between described fixture (13) and described valve ball (11), and be tightly connected with described valve ball (11), it is characterized in that: the exterior edge face that the exterior edge face being disposed radially of described valve seat (14) and described fixture (13) are disposed radially is for being tightly connected, the axial end of described valve seat (14) is positioned at the space between described valve body (12) and described valve ball (11).
2. ball valve according to claim 1, is characterized in that: the sealing surface (16) that the exterior edge face that the exterior edge face being disposed radially of described valve seat (14) and described fixture (13) are disposed radially forms is sphenoid surface.
3. ball valve according to claim 2, is characterized in that: on the radial outer end face of described fixture (13), form wedge-shaped impression, on the radial outer end face of described valve seat (14), be shaped to wedge shape projection; Described wedge shape projection is inserted in described wedge-shaped impression and is realized and being tightly connected.
4. ball valve according to claim 3, is characterized in that: between the bottom land of described wedge-shaped impression and the exterior edge face of described wedge shape projection, have sealed airspace (17), be provided with pad (171) or rubber o-ring (172) in described sealed airspace (17).
5. ball valve according to claim 1, is characterized in that: the sealing surface (16) that the exterior edge face that the exterior edge face being disposed radially of described valve seat (14) and described fixture (13) are disposed radially forms is arc surface.
6. according to the arbitrary described ball valve of claim 1-5, it is characterized in that: described valve body (12) is provided with the pin-and-hole (121) that is communicated with described fixture (13) on a side outer wall that approaches described valve ball (11), and described fixture (13) is provided with the groove (131) coordinating with described pin-and-hole (121); When rigging position, described pin-and-hole (121) is just right with described groove (131) position, is suitable for inserting limiting tool spacing to described fixture (13); When the working position, the position of described pin-and-hole (121) and described groove (131) segment distance that staggers; Described fixture (13) is resisted against on described valve seat (14).
7. ball valve according to claim 6, it is characterized in that: described valve seat (14) is coordinating side to form boss (141) with described valve ball (11), described boss (141) mate with the exterior edge face of described valve ball (11) with surface of contact described valve ball (11).
8. ball valve according to claim 7, is characterized in that: between described fixture (13) and the axial end of described valve body (12), be also provided with pressure ring (18) and spring (19); Described pressure ring (18) is sheathed on the end of described fixture (13), described spring (19) is resisted against between described pressure ring (18) and described valve body (12), and described Sealing (15) is positioned at the space between described fixture (13) and described pressure ring (18).
9. ball valve according to claim 8, is characterized in that: described spring (19) is cylindrical spring, wavy spring or belleville spring.
10. ball valve according to claim 8, is characterized in that: described Sealing (15) is some stuffing box packing, and described stuffing box packing is taper, V-arrangement or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817678.XU CN203614793U (en) | 2013-12-13 | 2013-12-13 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817678.XU CN203614793U (en) | 2013-12-13 | 2013-12-13 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614793U true CN203614793U (en) | 2014-05-28 |
Family
ID=50767441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320817678.XU Withdrawn - After Issue CN203614793U (en) | 2013-12-13 | 2013-12-13 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711929A (en) * | 2013-12-13 | 2014-04-09 | 苏州纽威阀门股份有限公司 | Ball valve |
-
2013
- 2013-12-13 CN CN201320817678.XU patent/CN203614793U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711929A (en) * | 2013-12-13 | 2014-04-09 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN103711929B (en) * | 2013-12-13 | 2015-12-23 | 苏州纽威阀门股份有限公司 | A kind of ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |