CN1687622A - Ball valve with novel seal structure - Google Patents
Ball valve with novel seal structure Download PDFInfo
- Publication number
- CN1687622A CN1687622A CN 200510025655 CN200510025655A CN1687622A CN 1687622 A CN1687622 A CN 1687622A CN 200510025655 CN200510025655 CN 200510025655 CN 200510025655 A CN200510025655 A CN 200510025655A CN 1687622 A CN1687622 A CN 1687622A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- spool
- valve body
- convex shoulder
- 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.)
- Pending
Links
Landscapes
- Taps Or Cocks (AREA)
Abstract
The invention relates to the ball valve with new seal structure, which solves the leakage between the valve rod and the valve of the prior art. The ball valve comprises the valve body, the valve core, the valve rod and the handle. The core is in the valve body and the center of it is the through-hole; the valve rod is through the valve body with its internal end connecting the valve core and its external extruding the valve body and connecting the handle; the valve rod movably connects the valve core, and the pressure nozzle is in the valve core connects the core with the valve rod; a shoulder is in the internal end of the valve rod, and the seal liner is between the shoulder and the valve body. The seal structure of the invention is the inner-tight structure, and the valve rod can move up-and-down to ensure the fine seal of the valve rod and the valve body.
Description
Technical field
The invention belongs to valve technology field, particularly a kind of ball valve.
Background technique
Ball valve is widely used in the various pipelines at present, is used for flowing of the interior medium of pilot line.The advantage of ball valve is that switch is rapid, simple in structure.
Ball valve in use can be opened or be closed continually, and sealing can descend after use a period of time, and particularly leakage phenomenon appears in valve rod and valve body place easily, has directly influenced the performance and the working life of ball valve.
Therefore, many people study at this problem, and the technological scheme that has has also been applied for patent.Provide a kind of " valve rod integral type ball valve " as Chinese patent 03116707.1, it is as a whole with spool and valve rod system, and is provided with a sealing configuration of being made up of parts such as lining, filler and glands at the valve rod place.The sealing structure is earlier by forming sealing between lining and the valve rod; Simultaneously, filler is contained in the top of lining, and pushes down the formation double seal by gland, and sealability is herein increased.
But after ball valve used longer a period of time, wearing and tearing can appear in its each Sealing inevitably, and the sealing between valve rod and the valve body is descended.
Summary of the invention
The objective of the invention is provides a kind of ball valve with novel seal structure at the existing the problems referred to above of existing ball valve, makes it have that sealability is good, rational in infrastructure, the characteristics of long service life.
Purpose of the present invention can realize by following technical proposal: the ball valve that originally has novel seal structure comprises valve body, spool, valve rod and handle, spool is positioned at valve body, its center is the through hole of a perforation, valve rod passes valve body, its the inner is connected with spool, its outer end is stretched out valve body and is connected with handle, it is characterized in that, described valve rod and spool flexibly connect, in spool, have a pressure port that valve core through hole is communicated with valve rod, inner end at valve rod is provided with a convex shoulder, and is provided with sealing gasket between convex shoulder and the valve body.
Originally have in the ball valve of novel seal structure, spool can only rotate in valve body, but valve rod can be up and down.Utilize this characteristics, can improve the sealing of ball valve at the valve rod place.After this ball valve is installed on pipeline, during the through hole of medium by spool, can enter pressure port and roof pressure on the interior edge face of valve rod, make on the valve rod and move.Like this, convex shoulder can tightly be pressed on sealing gasket on the valve body, keeps good sealing property thereby make between valve rod and the valve body.
In the above-mentioned ball valve with novel seal structure, described valve inner is provided with the convex shoulder seat that matches with the valve rod convex shoulder, and above-mentioned sealing gasket is between convex shoulder seat and convex shoulder.
In the above-mentioned ball valve with novel seal structure, described spool top is provided with a valve rod jack, and the aperture of valve rod jack is slightly larger than the external diameter of valve rod the inner, and above-mentioned pressure port communicates with the valve rod jack.Generally speaking, the aperture of pressure port is less than the aperture of above-mentioned valve rod jack.
Obviously, after valve rod inserts in the valve rod jack, can be up and down, and spool is to keep motionless.
Compared with prior art, the ball valve that originally has a novel seal structure has in use utilized the pressure medium that flows through ball valve dexterously, makes valve rod and valve body keep good sealing; Simultaneously, the pressure of medium is big more, and sealing between the two is good more.
After ball valve used a period of time, the sealing gasket wear phenomenon can appear.But, because above-mentioned sealing configuration is the mode that adopts internally-fastening type, so, can prolong the working life of ball valve to not influence of sealability.
Ball valve provided by the invention is compared with ordinary ball valve, and the cost of product is basic identical, and rational in infrastructure, has higher utility.
Description of drawings
Fig. 1 is the structural representation that originally has the ball valve of novel seal structure.
Fig. 2 is the decomposing schematic representation that originally has valve rod and valve body joint in the ball valve of novel seal structure.
Fig. 3 is the sectional view that originally has spool in the ball valve of novel seal structure.
Among the figure, 1, valve body; 11, convex shoulder seat; 2, spool; 21, through hole; 22, pressure port; 23, valve rod jack; 3, valve rod; 31, convex shoulder; 4, handle; 5, seal ring; 6, sealing gasket.
Embodiment
As shown in Figure 1, the ball valve that originally has a novel seal structure comprises valve body 1, spool 2, valve rod 3, handle 4, seal ring 5 and sealing gasket 6.Valve rod 3 passes valve body 1, inner is connected the outer end handle 4 that is being connected with spool 2.In the present embodiment, between the middle part of valve rod 3 and valve body 1, be provided with two seal rings 5.This structure is identical with the structure of ordinary ball valve.
Spool 2 is positioned at valve body 1.As shown in Figure 3, a through hole 21 that connects its left and right sides is arranged on the spool 2.Spool 2 has a valve rod jack 23 at the position with valve rod 3 joints.And, between through hole 21 and valve rod jack 23, be provided with a pressure port 22 that both are communicated.
As shown in Figure 1, insert in the valve rod jack 23 of spool 2 the inner of valve rod 3, and can be up and down.As shown in Figure 2, at valve rod 3 inner ends convex shoulder 31 is arranged, convex shoulder 31 can limit the scope that valve rod 1 moves up.Valve body 1 inside has a convex shoulder seat 11 that matches with convex shoulder 31 shapes.Convex shoulder 31 just is pressed on the convex shoulder seat 11.
Between convex shoulder 31 and convex shoulder seat 13, be provided with a sealing gasket 6.Usually, sealing gasket 6 adopts rubber material to make.
When opening ball valve, medium can be by the through hole 21 of spool 2.In this process, medium will enter in the pressure port 22 and roof pressure valve rod 3, make on the valve rod 3 and move, sealing gasket 6 is pressed on the convex shoulder seat 11 of valve body 1 inboard, thus the sealing between maintenance valve rod 3 and the valve body 1.
Claims (4)
1, a kind of ball valve with novel seal structure, comprise valve body (1), spool (2), valve rod (3) and handle (4), spool (2) is positioned at valve body (1), its center is the through hole (21) of a perforation, valve rod (3) passes valve body (1), its the inner is connected with spool (2), its outer end is stretched out valve body (1) and is connected with handle (4), it is characterized in that, described valve rod (3) flexibly connects with spool (2), in spool (2), have a pressure port (22) that valve core through hole (21) is communicated with valve rod (3), be provided with a convex shoulder (31) at the inner end of valve rod (3), and be provided with sealing gasket (6) between convex shoulder (31) and the valve body (1).
2, the ball valve with novel seal structure according to claim 1, it is characterized in that, described valve body (1) inside is provided with the convex shoulder seat (11) that matches with valve rod convex shoulder (31), and above-mentioned sealing gasket (6) is positioned between convex shoulder seat (11) and the convex shoulder (31).
3, the ball valve with novel seal structure according to claim 1 and 2, it is characterized in that, described spool (2) top is provided with a valve rod jack (23), the aperture of valve rod jack (23) is slightly larger than the inner external diameter of valve rod (3), and above-mentioned pressure port (22) communicates with valve rod jack (23).
4, the ball valve with novel seal structure according to claim 3 is characterized in that, the aperture of described pressure port (22) is less than the aperture of above-mentioned valve rod jack (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025655 CN1687622A (en) | 2005-05-08 | 2005-05-08 | Ball valve with novel seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025655 CN1687622A (en) | 2005-05-08 | 2005-05-08 | Ball valve with novel seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1687622A true CN1687622A (en) | 2005-10-26 |
Family
ID=35305664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510025655 Pending CN1687622A (en) | 2005-05-08 | 2005-05-08 | Ball valve with novel seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1687622A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460731C (en) * | 2006-03-20 | 2009-02-11 | 中国航天科技集团公司第一研究院第一〇一研究所 | Vacuum low-temperature ball valve |
| CN101793330A (en) * | 2010-04-14 | 2010-08-04 | 玉环县华龙阀门有限公司 | Venting ball valve |
| 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 |
| CN103672011A (en) * | 2013-12-18 | 2014-03-26 | 湖北泰和石化设备有限公司 | Cryogenic top entry type fireproof ball valve with composite heat dissipation disc valve cover |
-
2005
- 2005-05-08 CN CN 200510025655 patent/CN1687622A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460731C (en) * | 2006-03-20 | 2009-02-11 | 中国航天科技集团公司第一研究院第一〇一研究所 | Vacuum low-temperature ball valve |
| CN101793330A (en) * | 2010-04-14 | 2010-08-04 | 玉环县华龙阀门有限公司 | Venting ball valve |
| 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 |
| CN103672011A (en) * | 2013-12-18 | 2014-03-26 | 湖北泰和石化设备有限公司 | Cryogenic top entry type fireproof ball valve with composite heat dissipation disc valve cover |
| CN103672011B (en) * | 2013-12-18 | 2015-11-18 | 湖北泰和石化设备有限公司 | A kind of compound is fallen apart on Winchester disk valve gap deep cooling and is filled formula fire-proof ball valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1687622A (en) | Ball valve with novel seal structure | |
| CN2781113Y (en) | Ball valve with new sealing structure | |
| CN203336001U (en) | Hydraulic drive flat valve with manually-closing device | |
| CN101982680B (en) | Stop valve | |
| CN2874170Y (en) | Inflating sealed butterfly valve | |
| CN203214897U (en) | High-pressure self-sealing check valve with low flow resistance | |
| CN204420200U (en) | Cylinder-rotating three-way diverter valve | |
| CN2856629Y (en) | Hard sealed high pressure ball valve | |
| CN203162204U (en) | Two-piece internally threaded ball valve | |
| CN203670845U (en) | Elastic self-sealing gate valve | |
| CN203743599U (en) | Steel pipe cold extruding valve | |
| CN2694067Y (en) | Fluoroplastic full-lining ball valve special for alkali-chloride | |
| CN1215274C (en) | Valve and lever integrated ball valve | |
| CN201475380U (en) | Novel sealing gate valve | |
| CN2649882Y (en) | Dual-arc-piece sluice valve | |
| CN214305319U (en) | Bidirectional metal hard sealing butterfly valve | |
| CN211175426U (en) | Double-eccentric full-lining bidirectional sealing rubber lining butterfly valve | |
| CN2927018Y (en) | Valve-lever sealing structure of pressure gage valve | |
| CN1673587A (en) | Double-spile cut off valve for large-bore gas-delivering pipeline | |
| CN2527799Y (en) | Stop valve | |
| CN2409389Y (en) | Three-position two-way piston valve | |
| CN203258139U (en) | Middle flange metal seal device for middle-high pressure valve | |
| CN216742852U (en) | Scouring-resistant slurry valve | |
| CN2503277Y (en) | Elastic sluice valve with wedge-shaped sealing face | |
| CN209262343U (en) | A kind of screw thread type copper destructive valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |