CN203082257U - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN203082257U CN203082257U CN 201320037981 CN201320037981U CN203082257U CN 203082257 U CN203082257 U CN 203082257U CN 201320037981 CN201320037981 CN 201320037981 CN 201320037981 U CN201320037981 U CN 201320037981U CN 203082257 U CN203082257 U CN 203082257U
- Authority
- CN
- China
- Prior art keywords
- valve
- ball valve
- sealing
- groove
- valve rod
- 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 ball valve. The ball valve mainly solves the problems that when an existing ball valve is used, torsion of opening and closing of the existing ball valve is larger and the existing ball valve is prone to leakage. A sealing sleeve matched with a valve body in a limiting mode is arranged on an outer ring of a valve rod in a sleeved mode. An upper groove is formed in the upper end face of the sealing sleeve and surrounds the valve rod. A lower groove is formed in the lower end face of the sealing sleeve and surrounds the valve rod. A sealing clamping ring which is in conical surface extrusion fit with the upper groove is arranged in the upper groove. A sealing washer which is in conical surface extrusion fit with the lower groove is arranged in the lower groove. A valve deck is arranged above the sealing clamping ring. The valve deck is in axial compression fit with the sealing clamping ring. The ball valve has the advantages of being good in sealing performance, capable of being suitable for slight inclination of the valve rod and free of leakage.
Description
Technical field
The utility model 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 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, the filler that use on top, for preventing to leak, 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 class 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.
The model utility content
In order to overcome deficiency and the defective in the background technique, the utility model provides a kind of ball valve, mainly solves existing ball valve and has switching torque problem big, that leak easily in use.
The technical solution of the utility model is: a kind of ball valve, comprise valve body, spherical valve core, the valve rod that is connected with spherical valve core, described valve rod outer ring is arranged with and the spacing stuffing box gland that cooperates of described valve body, the upper-end surface of described stuffing box gland and lower end surface are respectively equipped with around the upper groove of valve rod and low groove, be respectively equipped with in described upper groove and the low groove with it and make sealing trim ring and the seal washer 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.
The truncation surface of described upper groove and sealing trim ring is all V-shaped, and the truncation surface of described low groove and seal washer all is reversed V-shape.
Described valve gap is provided with a plurality of adjustable bolts corresponding to the sealing trim ring.
Described stuffing box gland is the teflon elastic seal ring.
The beneficial effects of the utility model: owing to take such scheme, ball valve of the present utility model, stuffing box gland upper-end surface that valve rod is provided with and lower end surface are respectively equipped with upper groove and the low groove around valve rod, be respectively equipped with in described upper groove and the low groove with it and make sealing trim ring and the seal washer that conical surface extruding cooperates, utilize valve gap to the sealing trim ring give with axial pressure, stuffing box gland is cooperated with valve stem seal, have good airproof performance, can adapt to the slight inclination of valve rod and the advantage that can not reveal.
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 upper grooves, 82 low grooves, 9 seal washers, 10 bulge loops.
Embodiment
Below in conjunction with accompanying drawing a kind of ball valve of the utility model is described further:
As shown in the figure, a kind of ball valve, comprise valve body 1, spherical valve core 2, the valve rod 4 that is connected with spherical valve core 2, drive valve rod 4 by valve handle 3, realize the switch of ball valve, described valve rod 4 outer rings are arranged with and the described valve body 1 spacing stuffing box gland that cooperates 8, the upper-end surface of described stuffing box gland 8 and lower end surface are respectively equipped with around the upper groove 81 of valve rod 4 and low groove 82, be respectively equipped with in described upper groove 81 and the low groove 82 with it and make sealing trim ring 7 and the seal washer 9 that conical surface extruding cooperates, 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 10 pairs of seal washers of bulge loop 9 that valve body 1 is provided with are given and the reaction force that makes progress, the compression of stuffing box gland 8 elasticity notch ends is sealed and matched with valve rod 4, 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 upper groove 81 and sealing trim ring 7 is all V-shaped, and the truncation surface of described low groove 82 and seal washer 9 all is reversed V-shape.Certainly, also can do a little conversion, be rectangular as the truncation surface of groove, and sealing trim ring 7 and seal washer 9 truncation surfaces are V-shaped and be reversed V-shape.The V-arrangement of seal washer 9 and sealing trim ring 7 pairs of stuffing box glands 8 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 sealability.
Described valve gap 5 is provided with a plurality of adjustable bolts 6 corresponding to sealing trim ring 7.As preferably, described adjustable bolt is four, evenly circumferentially be distributed on the valve gap, 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.
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 (4)
1. ball valve, comprise valve body, spherical valve core, the valve rod that is connected with spherical valve core, it is characterized in that: described valve rod outer ring is arranged with and the spacing stuffing box gland that cooperates of described valve body, the upper-end surface of described stuffing box gland and lower end surface are respectively equipped with around the upper groove of valve rod and low groove, be respectively equipped with in described upper groove and the low groove with it and make sealing trim ring and the seal washer 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.
2. a kind of ball valve according to claim 1 is characterized in that: the truncation surface of described upper groove and sealing trim ring is all V-shaped, and the truncation surface of described low groove and seal washer all is reversed V-shape.
3. a kind of ball valve according to claim 1 is characterized in that: described valve gap is provided with a plurality of adjustable bolts corresponding to the sealing trim ring.
4. according to each described a kind of ball valve in the claim 1 to 3, 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 201320037981 CN203082257U (en) | 2013-01-24 | 2013-01-24 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037981 CN203082257U (en) | 2013-01-24 | 2013-01-24 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082257U true CN203082257U (en) | 2013-07-24 |
Family
ID=48828095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320037981 Expired - Fee Related CN203082257U (en) | 2013-01-24 | 2013-01-24 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082257U (en) |
-
2013
- 2013-01-24 CN CN 201320037981 patent/CN203082257U/en not_active Expired - Fee Related
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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 |