CN203082258U - Pressure resistance ball valve - Google Patents
Pressure resistance ball valve Download PDFInfo
- Publication number
- CN203082258U CN203082258U CN 201320037989 CN201320037989U CN203082258U CN 203082258 U CN203082258 U CN 203082258U CN 201320037989 CN201320037989 CN 201320037989 CN 201320037989 U CN201320037989 U CN 201320037989U CN 203082258 U CN203082258 U CN 203082258U
- Authority
- CN
- China
- Prior art keywords
- valve
- ball valve
- withstand voltage
- tapered collar
- stuffing box
- 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
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Abstract
The utility model relates to a pressure resistance ball valve and mainly solves the problems that an existing ball valve is poor in high-pressure resistance and easy to leak when used. A tapered ring which protrudes outwards is arranged on a valve rod, the center of the tapered ring is located on the axis of the valve rod, a sealing sleeve which surrounds the tapered ring is arranged inside a valve body, a concave tapered surface which is matched with the tapered ring in a sealing mode is arranged on the sealing sleeve, and the lower end surface of the tapered ring is in sealing fit with the valve body. The pressure resistance ball valve has the effects of good sealing performance, high safety and long service life.
Description
Technical field
The utility model relates to a kind of valve, specifically a kind of withstand voltage ball valve.
Background technique
The structure of existing withstand voltage ball valve generally is made up of valve body, valve junctor, ball, Stuffing box, filler, Gland, handle.Existing withstand voltage 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 withstand voltage ball valve ball and the valve rod of split-type structural are connected to activity, ball need be opened the relative not rotatable flat connection with the valve rod place of a groove, in actual applications herein for a long time in medium, medium through after a while washes away with switch and is easy to wearing and tearing, can cause and hold not in place or close not in placely, finally be 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, use above-mentioned filler, if pressure is bigger between filler and the valve rod, natural good seal performance, however filler elasticity is little, causes frictional force bigger; If pressure is not enough, then resistance to compression ability to bear deficiency causes dielectric leakage and blast easily, has potential safety hazard.
The model utility content
In order to overcome deficiency and the defective in the background technique, the utility model provides a kind of withstand voltage ball valve, mainly solves existing ball valve and has high voltage performance problem poor, that leak easily in use.
The technical solution of the utility model is: a kind of withstand voltage ball valve, comprise valve body, spherical valve core, and the valve rod that is connected with spherical valve core, be wholely set the tapered collar of evagination on the described valve rod, on the axle center that is centered close to valve rod of described tapered collar, be provided with the stuffing box gland that is surrounded on tapered collar in the described valve body, described stuffing box gland is provided with the concave conical surface that is sealed and matched with described tapered collar work, and described tapered collar lower end surface cooperates with valve seal.
The upper-end surface of described stuffing box gland is provided with the groove around valve rod, is provided with in the described groove with it and makes the sealing trim ring that conical surface extruding cooperates, and described sealing trim ring top is provided with valve gap, and described valve gap cooperates with the axial compression of sealing trim ring.
The truncation surface of described groove and sealing trim ring is all V-shaped.
Described valve gap is provided with a plurality of adjustable bolts corresponding to the sealing trim ring.
Be sealed with seal washer between described tapered collar and the valve body.
Described stuffing box gland is the teflon elastic seal ring.
The beneficial effects of the utility model: owing to take such scheme, withstand voltage ball valve of the present utility model, valve rod is provided with the tapered collar of evagination, the side and the stuffing box gland of described tapered collar are sealed and matched, the design that the lower end surface cooperates with valve seal, cone structure has the effect of self-locking to the medium in the valve, prevents that internal pressure is too high and causes leaking and blast, has the effect of good seal performance, safe and long service life.
Description of drawings
Accompanying drawing 1 is a cross-sectional schematic of the present utility model
Accompanying drawing 2 is the local enlarged diagrams at A place among Fig. 1
Among the figure, 1 valve body, 2 spherical valve cores, 3 valve handles, 4 valve rods, 5 valve gaps, 6 adjustable bolts, 7 sealing trim rings, 8 stuffing box glands, 81 grooves, 9 tapered collars, 10 bulge loops, 11 seal washers.
Embodiment
Below in conjunction with accompanying drawing a kind of withstand voltage ball valve of the utility model is described further.
As shown in the figure, this withstand voltage ball valve, comprise valve body 1, spherical valve core 2, and the valve rod 4 that is connected with spherical valve core 2, be wholely set the tapered collar 9 of evagination on the described valve rod 4, on the axle center that is centered close to valve rod 4 of described tapered collar 9, be provided with the stuffing box gland 8 that is surrounded on tapered collar 9 in the described valve body 1, described stuffing box gland 8 is provided with the concave conical surface that is sealed and matched with described tapered collar 9 works, and described tapered collar 9 lower end surfaces and valve body 1 are sealed and matched.As preferably, be provided with bulge loop 10 in the valve body 1, tapered collar 9 lower end surfaces and bulge loop 10 are sealed and matched, the design that is sealed and matched of the side of tapered collar 9 and stuffing box gland 8, compact structure, cone structure has the effect of self-locking to the medium in the valve, prevents that internal pressure is too high and causes leaking and blast, has the effect of good seal performance, safe and long service life.
The upper-end surface of described stuffing box gland 8 is provided with the groove 81 around valve rod 4, is provided with in the described groove 81 with it and makes the sealing trim ring 7 that conical surface extruding cooperates, and described sealing trim ring 7 tops are provided with valve gap 5, and described valve gap 5 cooperates with 7 axial compressions of sealing trim ring.Utilize 5 pairs of sealing trim rings of valve gap 7 give with downward axial pressure, and 1 pair of stuffing box gland of valve body 8 is given and the reaction force that makes progress, stuffing box gland 8 elasticity notch end compressive strains and valve rod 4 are sealed and matched, have good airproof performance, can adapt to the slight inclination of valve rod 4 and the advantage that can not reveal.
The truncation surface of described groove 81 and sealing trim ring 7 is all V-shaped.Certainly, also can do a little conversion, be rectangular as the truncation surface of groove 81.The V-arrangement of 11 pairs of stuffing box glands 8 of seal washer is stung tooth and is cooperated, with valve gap 5 pressure big more and between stuffing box gland 8 and the valve rod 4 sealability good more, effectively raise sealing and stability.
Described valve gap 5 is provided with a plurality of adjustable bolts 6 corresponding to sealing trim ring 7.As preferably, described adjustable bolt 6 is four, evenly circumferentially be distributed on the valve gap 5, by regulating the length that adjustable bolt 6 stretches out valve gap 5, can reach the extruding degree of regulating sealing trim ring 7 and stuffing box gland 8, then reached the seal degree and the frictional force size of regulating stuffing box gland 8 and valve rod 4, avoided causing the situation of valve rod 4 lockings, prolonged working life because of pressure is excessive.
Be sealed with seal washer 11 between described tapered collar 9 and the valve body 1.Prevent from directly to contact between tapered collar 9 lower end surfaces and the valve body 1, reduce friction, and improve the sealing of valve rod 4 and valve body 1.
Described stuffing box gland 8 is the teflon elastic seal ring.By the elastic compression and the distortion of stuffing box gland 8, strengthen sealing effect.
Embodiment should not be considered as the restriction to model utility, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (6)
1. withstand voltage ball valve, comprise valve body, spherical valve core, and the valve rod that is connected with spherical valve core, it is characterized in that: the tapered collar that is wholely set evagination on the described valve rod, on the axle center that is centered close to valve rod of described tapered collar, be provided with the stuffing box gland that is surrounded on tapered collar in the described valve body, described stuffing box gland is provided with the concave conical surface that is sealed and matched with described tapered collar work, and described tapered collar lower end surface cooperates with valve seal.
2. a kind of withstand voltage ball valve according to claim 1, it is characterized in that: the upper-end surface of described stuffing box gland is provided with the groove around valve rod, be provided with in the described groove with it and make the sealing trim ring that conical surface extruding cooperates, described sealing trim ring top is provided with valve gap, and described valve gap cooperates with the axial compression of sealing trim ring.
3. a kind of withstand voltage ball valve according to claim 2 is characterized in that: the truncation surface of described groove and sealing trim ring is all V-shaped.
4. a kind of withstand voltage ball valve according to claim 2 is characterized in that: described valve gap is provided with a plurality of adjustable bolts corresponding to the sealing trim ring.
5. according to each described a kind of withstand voltage ball valve in the claim 1 to 4, it is characterized in that: be sealed with seal washer between described tapered collar and the valve body.
6. according to each described a kind of withstand voltage ball valve in the claim 1 to 4, it is characterized in that: described stuffing box gland is the teflon elastic seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037989 CN203082258U (en) | 2013-01-24 | 2013-01-24 | Pressure resistance ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037989 CN203082258U (en) | 2013-01-24 | 2013-01-24 | Pressure resistance ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082258U true CN203082258U (en) | 2013-07-24 |
Family
ID=48828096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320037989 Expired - Fee Related CN203082258U (en) | 2013-01-24 | 2013-01-24 | Pressure resistance ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531144A (en) * | 2021-07-14 | 2021-10-22 | 永秀阀门有限公司 | Automatic clear ball valve |
-
2013
- 2013-01-24 CN CN 201320037989 patent/CN203082258U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531144A (en) * | 2021-07-14 | 2021-10-22 | 永秀阀门有限公司 | Automatic clear ball valve |
| CN113531144B (en) * | 2021-07-14 | 2023-08-08 | 永秀阀门有限公司 | Automatic clear ball valve |
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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: 20130724 Termination date: 20160124 |
|
| EXPY | Termination of patent right or utility model |