CN201526699U - Ball valve with long service life - Google Patents
Ball valve with long service life Download PDFInfo
- Publication number
- CN201526699U CN201526699U CN2009202316126U CN200920231612U CN201526699U CN 201526699 U CN201526699 U CN 201526699U CN 2009202316126 U CN2009202316126 U CN 2009202316126U CN 200920231612 U CN200920231612 U CN 200920231612U CN 201526699 U CN201526699 U CN 201526699U
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- CN
- China
- Prior art keywords
- valve
- ball
- end cap
- valve body
- bases
- 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 discloses a ball valve with long service life, which comprises a valve body, a valve end cap, a valve ball, a valve stem and a gland nut. A sealing gasket is arranged at a combined position of the valve body and the valve end cap, the valve ball is disposed inside the valve body and the valve end cap, the valve stem penetrates through the upper portion of the valve body to be connected with the valve ball, and the upper portion of the valve stem is sleeved with the gland nut. The ball valve with long service life is characterized by further comprising valve bases, valve base cushion blocks and elastic gaskets, upper and lower steps are arranged inside the valve body and the valve end cap, the valve base cushion blocks are respectively arranged at the upper and lower steps, the valve bases are arranged inside the valve base cushion blocks and contact with the valve ball, and the elastic gaskets are located on the outer sides of the valve base cushion blocks and contact with inner portions of the valve body and the valve end cap. The elastic gaskets always symmetrically press the valve bases so as to lead the valve bases to be tightly combined with the valve ball in a pretightening force form. When the valve bases are worn, the elastic gaskets can automatically compensate pressing degree in a pretightening force form so as to lead the valve bases to tightly cling to the valve ball, and then the service life of the valve is at least doubled.
Description
Technical field
The utility model relates to a kind of ball valve, particularly relates to a kind of ball valve of long-life high stability.
Background technique
The application of ball valve is comparatively extensive now, ordinary ball valve, generally all be based on soft seal, generally these have flexible nonmetallic material and make valve seat with teflon or rubber, valve seat directly is installed on two interior edge faces of valve body, utilizes compressing amount that valve seat reserves and valve ball to push during installation and reach sealing.But when valve opens or closes at every turn, all will produce the strong sliding friction of valve ball and valve seat, make sealing surface wear and distortion, long or when frequency of utilization is too high (at present businessman promises to undertake that generally the valve shelf-life is that 1 year or access times are about 20,000 times) when service time, valve will produce leakage, have a strong impact on working life, make the ball valve replacement cycle short, higher to inconvenience and replacement cost that production brings.
The model utility content
The utility model provides a kind of and has improved ball valve working life and avoid or postpone to change the ball-valve structure of the high stability of valve, valve ball and the strong sliding friction of valve seat in the prior art have been solved, make sealing surface wear and distortion, cause the not tight problem of valve ball and valve base sealing.
In order to solve the problems of the prior art, the technological scheme that the utility model adopted is:
A kind of long-life ball valve, comprise valve body, the valve end cap, valve ball, valve rod, gland nut, described valve body is provided with gasket seal with the valve end cap place of combining, valve ball is arranged on the inside of valve body and valve end cap, the top that valve rod passes valve body is connected with valve ball, valve rod top is arranged with gland nut, it is characterized in that: also comprise valve seat, valve seat cushion block and resilient pad, described valve body and valve end cap inside are provided with two place's steps up and down, be provided with the valve seat cushion block respectively at the up/down steps place, described valve seat is installed in the valve seat cushion block and with valve ball and contacts, resilient pad is positioned at the outside of valve seat cushion block, and resilient pad contacts with valve body and valve end cap are inner respectively.
Preferably, below the valve spindle gland nut, also be arranged with dish-shaped pad and sleeve, the middle mouthful of filler that seals is housed in the sleeve,, between valve rod and the valve body seal ring is installed in the bottom of valve rod.
Preferably, be provided with seal ring between described valve seat cushion block and valve body and the valve end cap.
The beneficial effects of the utility model are: the utility model installs two valve seat cushion blocks additional by the both sides at valve seat, resilient pad is placed at the surface of contact place of valve seat cushion block and valve body and valve end cap, resilient pad combines closely itself and valve ball with the mode symmetry extruding valve seat of pretightening force all the time, plays the effect of sealing.When wearing and tearing appearred in valve seat, the resilient pad pretightening force compensates the compressing amount automatically made valve seat and valve ball fit closely the working life that can improve one times of ball valve at least.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Main reference character implication among the figure:
1, valve body 2, valve end cap 3, valve ball 4, valve seat
5, valve seat cushion block 6, resilient pad 7, close type circle 8, gasket seal
9, valve rod 10, middle mouth filler 11, sleeve 12, dish-shaped pad
13, gland nut 14, Mi Xingquan
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, a kind of long-life ball valve comprises valve body 1, valve end cap 2, valve ball 3, valve seat 4, valve seat cushion block 5, resilient pad 6, valve rod 9, gland nut 13, described valve body 1 is provided with gasket seal 8 with valve end cap 2 places of combining, and prevents the external leakage of medium.Valve ball 3 is arranged on the inside of valve body 1 and valve end cap 2, the top that valve rod 9 passes valve body 1 is connected with valve ball 3, valve rod 9 tops are arranged with gland nut 13, below valve rod 9 gland nuts 13, also be arranged with dish-shaped pad 12 and sleeve 11, the middle mouthful of filler 10 that seals is housed in the sleeve 11, in the bottom of valve rod 9, between valve rod 9 and the valve body 1 seal ring 14 is installed.Make middle mouthful of filler 10 extravagance in step hole reach well middle mouthful sealing effect by gland nut 13 dish-shaped pads 12 of extruding and sleeve 11.Described valve body 1 and valve end cap 2 inside are provided with tops bar 15 and get out of a predicament or an embarrassing situation 16, be provided with valve seat cushion block 5 respectively at the up/down steps place, described valve seat 4 is installed in the valve seat cushion block 5 and with valve ball 3 and contacts, resilient pad 6 is positioned at the outside of valve seat cushion block 5, and resilient pad 6 contacts with valve end cap 2 step surfaces with valve body 1 respectively.Also be provided with seal ring 7 between described valve seat cushion block 5 and valve body 1 and the valve end cap 2.Through using for a long time, the sealing surface of valve ball 3 and valve seat 4 will wear and tear and be out of shape, do not reach the better seal effect, at this moment the pretightening force of resilient pad 6 all the time squeeze valve seat cushion piece 5 valve seats 4 in the valve seat cushion block 5 are closely contacted with valve ball 3, reach the sealing compensation effect, effectively raise the working life of ball valve.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. long-life ball valve, comprise valve body, the valve end cap, valve ball, valve rod, gland nut, described valve body is provided with gasket seal with the valve end cap place of combining, valve ball is arranged on the inside of valve body and valve end cap, the top that valve rod passes valve body is connected with valve ball, valve rod top is arranged with gland nut, it is characterized in that: also comprise valve seat, valve seat cushion block and resilient pad, described valve body and valve end cap inside are provided with two place's steps up and down, be provided with the valve seat cushion block respectively at the up/down steps place, described valve seat is installed in the valve seat cushion block and with valve ball and contacts, resilient pad is positioned at the outside of valve seat cushion block, and resilient pad contacts with valve body and valve end cap are inner respectively.
2. a kind of long-life ball valve according to claim 1, it is characterized in that: below the valve spindle gland nut, also be arranged with dish-shaped pad and sleeve, the middle mouthful of filler that seals is housed in the sleeve,, between valve rod and the valve body seal ring is installed in the bottom of valve rod.
3. a kind of long-life ball valve according to claim 2 is characterized in that: be provided with seal ring between described valve seat cushion block and valve body and the valve end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202316126U CN201526699U (en) | 2009-09-16 | 2009-09-16 | Ball valve with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202316126U CN201526699U (en) | 2009-09-16 | 2009-09-16 | Ball valve with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526699U true CN201526699U (en) | 2010-07-14 |
Family
ID=42517985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202316126U Expired - Fee Related CN201526699U (en) | 2009-09-16 | 2009-09-16 | Ball valve with long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174968A (en) * | 2011-03-25 | 2011-09-07 | 扬州市西博思科技发展有限公司 | Burst and back seal prevention mechanism of valve rod |
-
2009
- 2009-09-16 CN CN2009202316126U patent/CN201526699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174968A (en) * | 2011-03-25 | 2011-09-07 | 扬州市西博思科技发展有限公司 | Burst and back seal prevention mechanism of valve rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20120916 |