CN204717039U - Fixing ball valve is opened and closed without friction - Google Patents
Fixing ball valve is opened and closed without friction Download PDFInfo
- Publication number
- CN204717039U CN204717039U CN201520453319.XU CN201520453319U CN204717039U CN 204717039 U CN204717039 U CN 204717039U CN 201520453319 U CN201520453319 U CN 201520453319U CN 204717039 U CN204717039 U CN 204717039U
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- valve
- valve seat
- gap
- spheroid
- bracing ring
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Abstract
The utility model relates to a kind of without friction keying fixing ball valve, comprises valve body, valve seat, valve gap, valve rod, spheroid, driving mechanism; Mainly between valve gap and valve body, be provided with seal ring, valve seat bracing ring is set between seal ring and valve gap, piston structure is formed respectively between the radial and seal ring of this valve seat bracing ring and valve gap is radial, valve seat bracing ring and form left piston chamber and right piston cavity between valve gap and seal ring respectively, left piston chamber and right piston cavity are communicated with note pressure valve and Decompression valves respectively, and valve seat is arranged on the valve seat bracing ring at valve gap passway place.Realize opening and closing after valve seat removes spheroid and spheroid is closed the rear valve base that puts in place and is close to sealing, reach the contactless friction of sealing pair in opening-closing process, have sealability reliably, the advantage such as long service life.Be applicable on oil, chemical field pipeline.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of fixing ball valve.The utility model is applicable on oil, chemical field pipeline.
Background technique
At present, ball valve is because structure is simple, open-close convenient, flow resistance are little and be widely used on the media-carrying lines in the fields such as oil, chemical industry, electric power.But ball valve exists friction between spheroid and valve seat in opening-closing process, and along with increasing of valve switch number of times, sealing surface is frayed gradually, reduce sealability and product working life.For this reason, with the device of cam on a kind of valve rod of domestic appearance, in the process that this ball valve rotates at spheroid, the cam be connected on valve rod and then rotates together, and then utilizes cam to push valve seat open to reduce the friction between spheroid and valve base sealing pair.What this structure was used is pushing open of Purely mechanical, and not only the wearing and tearing of cam quickly, and improve the requirement to valve rod intensity and hardness, and therefore along with the wearing and tearing of cam, valve seat and ball seal pair are worn and torn and increased, and sealability declines.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides contactless friction in opening-closing process between a kind of valve seat and spheroid, and sealability is reliable, the nothing friction of long service life opens and closes fixing ball valve.
The technical solution of the utility model comprises valve body, valve seat, valve gap, valve rod, spheroid, driving mechanism; Mainly between valve gap and valve body, be provided with seal ring, valve seat bracing ring is set between seal ring and valve gap, piston structure is formed respectively between the radial and seal ring of this valve seat bracing ring and valve gap is radial, valve seat bracing ring and form left piston chamber and right piston cavity between valve gap and seal ring respectively, left piston chamber and right piston cavity are communicated with note pressure valve and Decompression valves respectively, and valve seat is arranged on the valve seat bracing ring at valve gap passway place.
Preferably, valve gap vias inner walls installs the scraper equal with spheroid channel diameter, and the knife edge of scraper has the curved surface cooperatively interacted with spherome surface, forms piston and coordinate between scraper external cylindrical surface with valve seat bracing ring inner headed face.
The utility model has the advantages that valve seat is arranged on valve seat bracing ring, valve seat bracing ring and valve gap and seal ring left piston chamber and right piston cavity, by the control to the note pressure valve be communicated with right piston cavity with left piston chamber and Decompression valves, realize opening and closing after valve seat removes spheroid and the spheroid closedown rear valve base that puts in place is close to sealing, reach the contactless friction of sealing pair in opening-closing process, sealability be reliable, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is B place partial structurtes enlarged view in the utility model Fig. 1.
1 valve body, 2 valve gaps, 3 spheroids, 4 scrapers, 5 valve seats, 6 valve seat bracing rings, 7 left piston chambeies, 8 right piston cavity, 9 seal rings, 10 glands, 11 valve rods, 12 first circular hole walls, 13 second circular hole walls.
Embodiment
Nothing friction as shown in Figure 1 opens and closes fixing ball valve, and comprise valve body 1, valve seat 5, valve gap 2, valve rod 11, spheroid 3, driving mechanism, spheroid 3 upper end is fixedly connected with valve rod 11 lower end, and spheroid 3 lower end is arranged in valve body 1 by positioning shaft; Seal ring 9 is provided with between valve gap 2 and valve body 1, valve seat bracing ring 6 is set between seal ring 9 and valve gap 2, piston structure is formed respectively between radial and seal ring 9 radial direction of this valve seat bracing ring 6 and valve gap 2, namely between valve seat bracing ring 6 external cylindrical surface with the radial first circular hole wall 12 of valve gap 2, piston coordinates, the right boss external cylindrical surface of valve seat bracing ring 6 coordinates with seal ring 9 internal diameter circular hole wall piston, between valve seat bracing ring 6 endoporus left boss external cylindrical surface with the radial second circular hole wall 13 of valve gap 2, piston coordinates, and valve seat bracing ring 6 internal orifice dimension is equal with valve gap 2 internal orifice dimension.Valve seat bracing ring 6 and form left piston chamber 7 and right piston cavity 8 between valve gap 2 and seal ring 9 respectively, left piston chamber 7 and right piston cavity 8 are communicated with note pressure valve and Decompression valves respectively, namely left piston chamber 7 is noted pressure valve by the pressure port on valve gap 2 with left side and is communicated with left side Decompression valves, and right piston cavity 8 pressure port passed through on seal ring 9 is noted pressure valve with right side and is communicated with right side Decompression valves.Valve seat 5 is arranged on the valve seat bracing ring 6 at valve gap 2 passway place, as shown in Figure 2.Before valve opening, right side note pressure valve opens piston cavity 8 note pressure to the right, and left piston chamber 7 internal pressure of releasing opened by left side Decompression valves, promotes valve seat bracing ring 6 and is moved to the left; And after valve closing puts in place, left side note pressure valve opens piston cavity 7 note pressure left, right piston cavity 8 internal pressure of releasing opened by right side Decompression valves, promotes valve seat bracing ring 6 and moves right, valve seat 5 is coordinated with spheroid 3 press seal.
Valve gap 2 vias inner walls installs the cylindrical shape scraper 4 equal with spheroid 3 channel diameter, the knife edge of scraper 4 has the curved surface cooperatively interacted with spheroid 3 surface, in spheroid 3 opening-closing process, scrape off surperficial coking material, form piston between scraper 4 external cylindrical surface with valve seat bracing ring 6 inner headed face and coordinate.By gland 10 and packing seal between valve rod 11 and valve body 1.
Claims (2)
1. open and close a fixing ball valve without friction, comprise valve body (1), valve seat (5), valve gap (2), valve rod (11), spheroid (3), driving mechanism, it is characterized in that being provided with seal ring (9) between valve gap (2) and valve body (1), valve seat bracing ring (6) is set between seal ring (9) and valve gap (2), piston structure is formed respectively between radial and seal ring (9) radial direction of this valve seat bracing ring (6) and valve gap (2), valve seat bracing ring (6) and form left piston chamber (7) and right piston cavity (8) between valve gap (2) and seal ring (9) respectively, left piston chamber (7) and right piston cavity (8) are communicated with note pressure valve and Decompression valves respectively, valve seat (5) is arranged on the valve seat bracing ring (6) at valve gap (2) passway place.
2. according to claim 1 without friction keying fixing ball valve, it is characterized in that valve gap (2) vias inner walls installs the cylindrical shape scraper (4) equal with spheroid (3) channel diameter, the knife edge of scraper (4) has the curved surface cooperatively interacted with spheroid (3) surface, forms piston and coordinate between scraper (4) external cylindrical surface with valve seat bracing ring (6) inner headed face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453319.XU CN204717039U (en) | 2015-06-19 | 2015-06-19 | Fixing ball valve is opened and closed without friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453319.XU CN204717039U (en) | 2015-06-19 | 2015-06-19 | Fixing ball valve is opened and closed without friction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204717039U true CN204717039U (en) | 2015-10-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520453319.XU Active CN204717039U (en) | 2015-06-19 | 2015-06-19 | Fixing ball valve is opened and closed without friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204717039U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221784A (en) * | 2015-10-23 | 2016-01-06 | 朱晓丰 | A kind of wear-less hard seal ball valve |
| CN107131317A (en) * | 2017-06-02 | 2017-09-05 | 永嘉县信诚科技服务有限公司 | High-temperature wearable metal sealing electric-controlled ball valve |
| CN107255173A (en) * | 2017-06-02 | 2017-10-17 | 永嘉县信诚科技服务有限公司 | Automatically controlled plug valve |
| CN110805716A (en) * | 2019-11-29 | 2020-02-18 | 中国船舶重工集团公司第七一九研究所 | Ball valve with backpressure unloading structure |
| CN111981154A (en) * | 2020-07-08 | 2020-11-24 | 浙江福瑞科流控机械有限公司 | Valve structure capable of realizing forced double-closing zero friction |
| CN111981155A (en) * | 2020-07-08 | 2020-11-24 | 浙江福瑞科流控机械有限公司 | Forced double-shutoff friction-free upper-mounted ball valve |
-
2015
- 2015-06-19 CN CN201520453319.XU patent/CN204717039U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221784A (en) * | 2015-10-23 | 2016-01-06 | 朱晓丰 | A kind of wear-less hard seal ball valve |
| CN105221784B (en) * | 2015-10-23 | 2018-04-20 | 朱晓丰 | A kind of wear-less hard seal ball valve |
| CN107131317A (en) * | 2017-06-02 | 2017-09-05 | 永嘉县信诚科技服务有限公司 | High-temperature wearable metal sealing electric-controlled ball valve |
| CN107255173A (en) * | 2017-06-02 | 2017-10-17 | 永嘉县信诚科技服务有限公司 | Automatically controlled plug valve |
| CN110805716A (en) * | 2019-11-29 | 2020-02-18 | 中国船舶重工集团公司第七一九研究所 | Ball valve with backpressure unloading structure |
| CN110805716B (en) * | 2019-11-29 | 2024-05-28 | 中国船舶重工集团公司第七一九研究所 | Ball valve with back pressure unloading structure |
| CN111981154A (en) * | 2020-07-08 | 2020-11-24 | 浙江福瑞科流控机械有限公司 | Valve structure capable of realizing forced double-closing zero friction |
| CN111981155A (en) * | 2020-07-08 | 2020-11-24 | 浙江福瑞科流控机械有限公司 | Forced double-shutoff friction-free upper-mounted ball valve |
| CN111981155B (en) * | 2020-07-08 | 2022-02-18 | 浙江福瑞科流控机械有限公司 | Forced double-shutoff friction-free upper-mounted ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |