CN106015620A - Valve rod combination structure of high-pressure ball valve - Google Patents
Valve rod combination structure of high-pressure ball valve Download PDFInfo
- Publication number
- CN106015620A CN106015620A CN201610438304.5A CN201610438304A CN106015620A CN 106015620 A CN106015620 A CN 106015620A CN 201610438304 A CN201610438304 A CN 201610438304A CN 106015620 A CN106015620 A CN 106015620A
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- CN
- China
- Prior art keywords
- valve
- valve rod
- valve body
- rod
- hole
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Abstract
The invention discloses a valve rod combination structure of a high-pressure ball valve. A valve rod penetrates through a valve rod hole formed in a valve body and the center of a ceramic valve body liner, wherein the bottom end of the valve rod is connected with a ceramic ball core in an embedding manner; a protruding shaft shoulder is arranged at the position, near to the bottom end, of the valve rod and is clamped on the lower surface of the valve rod hole of the ceramic valve body liner; a graphite thrust gasket is arranged between the shaft shoulder and the lower surface of the valve rod hole of the ceramic valve body liner in a sleeving manner; a stuffing box is arranged between the valve rod hole of the valve body and the valve rod; a spacing ring and a butterfly spring are arranged above the stuffing box; the stuffing box, the spacing ring and the butterfly spring are arranged on the valve rod in a sleeving manner; the top end of the valve rod is connected with an output shaft in a sleeving manner; a stuffing gland is arranged outside the output shaft in a sleeving manner and is mounted on a bracket above the valve body; the bottom end of the stuffing gland presses the butterfly spring; a thread hole is formed in the center of the output shaft; the thread hole is internally connected with a screw in a spiral manner; the tail end of the screw extends into a guide hole in the top end of the valve rod to fixedly press the valve rod. The valve rod combination structure is applicable to valves under a high-pressure working environment, and has the characteristics of valve rod blowout prevention, reliable stuffing sealing and small valve opening and closing torque.
Description
Technical field
The invention belongs to universal machine valve technology field, particularly relate to the valve-rod combination structure of a kind of high-pressure ball valve.
Background technology
Along with making rapid progress of science and technology, the high speed development of Chemical Engineering Technology, in order to improve product quality and prouctiveness, high pressure, high-temperature and high flow rate technology have obtained universal promoting the use, this proposes new design requirement to matched valve, higher to safety, reliability and the cost-effectiveness requirement of valve.Valve be ensure that is reliable under the working environment of high pressure-temperature high speed and severe corrosive, does not leaks outside, and reduces the risk produced, and reduces the labor intensity of on-the-spot repair and maintenance personnel, the economic benefit of raising enterprise.Due to valve rod in process of production always at ceaselessly kinestate, because the problem of the generation such as abrasion or fatigue is the most, therefore improving the sealing structure of valve rod is that valve can one of the key of safe and stable operation.
Summary of the invention
It is an object of the invention to improve the deficiency of prior art, it is provided that a kind of sealing at the working environment lower valve rod of high pressure is reliable and stable, and the unlatching moment of torsion of valve is little simultaneously, improve the high-pressure ball valve valve-rod combination structure in valve service life.
nullFor realizing the object of the invention，Provide techniques below scheme: a kind of high-pressure ball valve valve-rod combination structure,This ball valve includes valve body、The left and right flange at valve body two ends、Ceramic valve body liner、Left and right ceramic valve seat、It is arranged at ceramic core and the valve rod at valve body center，In the valve rod hole that valve rod is through at valve body and ceramic valve body liner center is offered，It is characterized in that valve rod bottom and pottery core interlocking，The nearly bottom of valve rod is provided with the protrusion shaft shoulder，Protrude the lower surface that the shaft shoulder is stuck in the valve rod hole of ceramic valve body liner，It is provided with stuffing-box between the valve rod hole of valve body and valve rod，Equipped with spacer ring and butterfly spring above stuffing-box，Described stuffing-box、Spacer ring and butterfly spring are all sheathed on valve rod，Valve stem tip is socketed with output shaft、Gland it is arranged with outside output shaft，Gland is installed on the support above valve body，Gland bottom compresses disc spring，Output shaft center offers screwed hole，Screw it is connected with in screwed hole，Tip of screw stretches in valve stem tip pilot hole，Valve rod is fixed.Equipped with spacer ring, butterfly spring and gland above stuffing-box, tightening the nut of gland, its thrust is delivered to stuffing-box by spacer ring and butterfly spring, plays and compresses the effect sealed.
As preferably, being provided with needle bearing between output shaft and gland, needle bearing is provided above hole elastic spring.Reduce the frictional force of stem movement.
As preferably, the upper surface of ceramic valve body liner valve rod hole is fluted, is arranged in groove bottom stuffing-box.
As preferably, between the lower surface of the valve rod hole protruding the shaft shoulder and ceramic valve body liner, it is arranged with graphite thrust washer.The how high valve rod of pipe pressure is not all without the phenomenon of generation ejection, and graphite thrust washer has well lubrication and sealing property simultaneously.
As preferably, described graphite thrust washer includes graphite matrix and the reinforcement steel wire being arranged in graphite matrix.Intensity is high, and greasy property is good.
As preferably, stuffing-box is the black box cooperatively formed by several fillers, and upper and lower end face is plane, and inside is concavo-convex matching.
The method have the benefit that the bottom of valve rod is provided with the shaft shoulder protruding valve rod cylindrical, the shaft shoulder is stuck in the lower surface of ceramic valve body liner intermediate valve rod aperture, by graphite thrust washer between the shaft shoulder and lower surface, the how high valve rod of pipe pressure is not all without the phenomenon that ejection occurs, graphite thrust washer has well lubrication and sealing property simultaneously, reduces frictional force during valve rod work；Upper surface at ceramic valve body liner valve rod hole has matrix platform, the bottom of stuffing-box is arranged in this platform, equipped with spacer ring, butterfly spring and gland above stuffing-box, tighten the nut of gland, its thrust is delivered to stuffing-box by spacer ring and butterfly spring, plays and compresses the effect sealed, and in working long hours, filler has worn and torn, butterfly spring may also operate as good compensating action, makes sealingly secure reliable；Equipped with needle bearing and hole elastic spring between output shaft and gland, frictional force can be reduced when driving stem movement, make valve event steady
Therefore, the present invention disclosure satisfy that and uses on-the-spot technology requirement, and production run is safe and reliable, and the service life of valve is greatly improved, it is possible to be greatly improved the economical production scale of enterprise, it is thus achieved that economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Detailed description of the invention
nullEmbodiment 1: a kind of high-pressure ball valve valve-rod combination structure,This ball valve includes valve body 1、The left and right flange (2 at valve body 1 two ends、3)、Ceramic valve body liner 4、Left and right ceramic valve seat (5、6)、It is arranged at ceramic core 7 and the valve rod 8 at valve body 1 center，In the valve rod hole that valve rod 8 is through at valve body 1 and ceramic valve body liner 4 center is offered，Valve rod 8 bottom is rabbeted with pottery core 7，The nearly bottom of valve rod 8 is provided with the protrusion shaft shoulder 8.1，Protrude the lower surface that the shaft shoulder 8.1 is stuck in the valve rod hole of ceramic valve body liner 4，It is provided with stuffing-box 10 between the valve rod hole of valve body 1 and valve rod 8，Equipped with spacer ring 11 and butterfly spring 12 above stuffing-box 10，Described stuffing-box 10、Spacer ring 11 and butterfly spring 12 are all sheathed on valve rod 8，Valve rod 8 top is socketed with output shaft 13、Gland 14 it is arranged with outside output shaft 13，Gland 14 is installed on the support 15 above valve body 1，Gland 14 bottom compresses disc spring 12，Output shaft 13 center offers screwed hole，Screw 16 it is connected with in screwed hole，Screw 16 end stretches in the pilot hole of valve rod 8 top，Valve rod 8 is fixed.Being provided with needle bearing 17 between output shaft 13 and gland 14, needle bearing 17 is provided above hole elastic spring 18.The upper surface of ceramic valve body liner 4 valve rod hole is fluted, is arranged in groove bottom stuffing-box 10.It is arranged with graphite thrust washer 9 between the lower surface of the valve rod hole protruding the shaft shoulder 8.1 and ceramic valve body liner 4.Graphite thrust washer 9 includes graphite matrix and the reinforcement steel wire being arranged in graphite matrix.Stuffing-box 10 is the black box cooperatively formed by several fillers, and upper and lower end face is plane, and inside is concavo-convex matching.
Claims (6)
- null1. a high-pressure ball valve valve-rod combination structure,This ball valve includes valve body、The left and right flange at valve body two ends、Ceramic valve body liner、Left and right ceramic valve seat、It is arranged at ceramic core and the valve rod at valve body center，In the valve rod hole that valve rod is through at valve body and ceramic valve body liner center is offered，It is characterized in that valve rod bottom and pottery core interlocking，The nearly bottom of valve rod is provided with the protrusion shaft shoulder，Protrude the lower surface that the shaft shoulder is stuck in the valve rod hole of ceramic valve body liner，It is provided with stuffing-box between the valve rod hole of valve body and valve rod，Equipped with spacer ring and butterfly spring above stuffing-box，Described stuffing-box、Spacer ring and butterfly spring are all sheathed on valve rod，Valve stem tip is socketed with output shaft、Gland it is arranged with outside output shaft，Gland is installed on the support above valve body，Gland bottom compresses disc spring，Output shaft center offers screwed hole，Screw it is connected with in screwed hole，Tip of screw stretches in valve stem tip pilot hole，Valve rod is fixed.
- A kind of high-pressure ball valve valve-rod combination structure the most according to claim 1, it is characterised in that being provided with needle bearing between output shaft and gland, needle bearing is provided above hole elastic spring.
- A kind of high-pressure ball valve valve-rod combination structure the most according to claim 1, it is characterised in that the upper surface of ceramic valve body liner valve rod hole is fluted, is arranged in groove bottom stuffing-box.
- A kind of high-pressure ball valve valve-rod combination structure the most according to claim 1, it is characterised in that be arranged with graphite thrust washer between the lower surface of the valve rod hole protruding the shaft shoulder and ceramic valve body liner.
- A kind of high-pressure ball valve valve-rod combination structure the most according to claim 4, it is characterised in that graphite thrust washer includes graphite matrix and the reinforcement steel wire being arranged in graphite matrix.
- A kind of high-pressure ball valve valve-rod combination structure the most according to claim 1, it is characterised in that stuffing-box is the black box cooperatively formed by several fillers, and upper and lower end face is plane, and inside is concavo-convex matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610438304.5A CN106015620A (en) | 2016-06-20 | 2016-06-20 | Valve rod combination structure of high-pressure ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610438304.5A CN106015620A (en) | 2016-06-20 | 2016-06-20 | Valve rod combination structure of high-pressure ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106015620A true CN106015620A (en) | 2016-10-12 |
Family
ID=57087931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610438304.5A Pending CN106015620A (en) | 2016-06-20 | 2016-06-20 | Valve rod combination structure of high-pressure ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114244A (en) * | 2018-09-06 | 2019-01-01 | 武汉工程大学 | Nested type combination valve and production method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499703A (en) * | 1937-11-08 | 1939-01-27 | Henri Rene Hervieu | Improvements in or relating to plug cocks |
| CN201318471Y (en) * | 2008-12-16 | 2009-09-30 | 福建菲达阀门有限公司 | Full-lining ceramic ball valve |
| CN202132536U (en) * | 2011-02-16 | 2012-02-01 | 淄博汇华阀业有限公司 | High-temperature wear-resistant ceramic ball vale |
| CN103470800A (en) * | 2013-09-12 | 2013-12-25 | 烟台金泰美林科技有限公司 | High temperature high pressure ceramic valve |
| CN203857076U (en) * | 2014-05-25 | 2014-10-01 | 北科阀门制造有限公司 | Novel high-platform ball valve |
| CN104315185A (en) * | 2014-09-01 | 2015-01-28 | 浙江永盛仪表有限公司 | Double-scraper ultra-hard sealing ball valve |
| CN205908792U (en) * | 2016-06-20 | 2017-01-25 | 中一节能耐磨技术宜兴有限公司 | High pressure ball valve valve rod integrated configuration |
-
2016
- 2016-06-20 CN CN201610438304.5A patent/CN106015620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499703A (en) * | 1937-11-08 | 1939-01-27 | Henri Rene Hervieu | Improvements in or relating to plug cocks |
| CN201318471Y (en) * | 2008-12-16 | 2009-09-30 | 福建菲达阀门有限公司 | Full-lining ceramic ball valve |
| CN202132536U (en) * | 2011-02-16 | 2012-02-01 | 淄博汇华阀业有限公司 | High-temperature wear-resistant ceramic ball vale |
| CN103470800A (en) * | 2013-09-12 | 2013-12-25 | 烟台金泰美林科技有限公司 | High temperature high pressure ceramic valve |
| CN203857076U (en) * | 2014-05-25 | 2014-10-01 | 北科阀门制造有限公司 | Novel high-platform ball valve |
| CN104315185A (en) * | 2014-09-01 | 2015-01-28 | 浙江永盛仪表有限公司 | Double-scraper ultra-hard sealing ball valve |
| CN205908792U (en) * | 2016-06-20 | 2017-01-25 | 中一节能耐磨技术宜兴有限公司 | High pressure ball valve valve rod integrated configuration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114244A (en) * | 2018-09-06 | 2019-01-01 | 武汉工程大学 | Nested type combination valve and production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
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| RJ01 | Rejection of invention patent application after publication |