CN104329463A - Vacuum valve packing sealing structure - Google Patents
Vacuum valve packing sealing structure Download PDFInfo
- Publication number
- CN104329463A CN104329463A CN201410595550.2A CN201410595550A CN104329463A CN 104329463 A CN104329463 A CN 104329463A CN 201410595550 A CN201410595550 A CN 201410595550A CN 104329463 A CN104329463 A CN 104329463A
- Authority
- CN
- China
- Prior art keywords
- packing
- liner
- filler
- gland
- arrangement
- 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
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
- F16K41/00—Spindle sealings
- F16K41/003—Spindle sealings by fluid
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention belongs to the technical field of a valve with a packing box. A vacuum valve packing sealing structure comprises a packing gland which seals the upper end opening of a packing cavity of a valve cover, wherein a seal groove is formed in the inner wall of the packing gland; an O-shaped seal ring is installed in the seal groove; the bottom part of the packing cavity is provided with a bottom mat; a first liner, first V-shaped packing, a second liner, a separation ring, a third liner, second V-shaped packing and a fourth liner are arranged in sequence between the packing gland and the bottom mat; the opening direction of the V corner of the first V-shaped packing is opposite to that of the second V-shaped packing; sealant fills the separation ring. According to the vacuum valve packing sealing structure, the air tightness is better, and the way of placing the packing box is not limited.
Description
Technical field
The invention belongs to the valve technology field with stuffing box.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.Valve generally comprises valve seat, valve gap, spool and valve rod, and valve seat and valve gap are connected to form the chamber holding spool, and valve rod outer termination power mechanism, valve rod the inner is run through valve gap and is connected with spool, and valve rod band movable valve plug moves up and down and valve is opened and closed gradually.Valve rod leaks to not make the medium in valve body, and the valve rod in being kept in motion needs to carry out motive sealing with valve gap.The sealing of valve rod adopts the form of stuffing box usually, and filler is placed in stuffing box inside.
Existing stuffing box is generally gland type, comprise Gland, swing bolt, Packing seat, Gland is connected by swing bolt with valve gap, but vacuum valve requires higher to the requirement of sealing than common valve, existing stuffing box adopts the compression of radial expansion realization to valve rod of single V-arrangement filler, its shortcoming is: be all from top to bottom load usually during stuffing box loading valve gap, if at this moment the V of V-arrangement filler hands over opening direction identical with loading direction, V does not open at angle completely, there is gap in the axial direction in V-arrangement filler, affect the sealability of vacuum valve packing seal structure, and in fact a lot of workman can wrongly installed direction when operating.In addition, existing filling material is solid-state, and as asbestos, graphite etc., especially asbestos or other braided packing always there will be small interfacial gap, probably cause fugacity to be revealed, and finally affects the degree of vacuum of vacuum valve.
Summary of the invention
The invention is intended to provide a kind of tightness better, not limit vacuum valve packing seal structure to stuffing box load mode.
Vacuum valve packing seal structure in this programme, comprise the Gland of closed valve gap packing cavity upper end-hole, the inwall of described Gland has sealed groove, is provided with O RunddichtringO in sealing groove; The bottom of packing cavity is provided with heelpiece, the first liner, the first V-arrangement filler second liner, spacer ring, the 3rd liner, the second V-arrangement filler and the 4th liner is disposed with between Gland and heelpiece, the V angle opening direction of the first V-arrangement filler and the second V-arrangement filler is contrary, and spacer ring place arranges and is filled with sealing compound.
Beneficial effect of the present invention: be provided with O RunddichtringO on the inwall of Gland, about serving good sealing, prevents valve rod from movement process, taking medium to Gland place and reveal between valve rod and Gland; The V angle opening direction of the first V-arrangement filler and the second V-arrangement filler is contrary, so no matter stuffing box loads packing cavity from the either end of valve rod, can ensure that the V angle having a V-arrangement filler at least is opened completely, there will not be axial clearance, can not make mistakes when workman loads filler; In addition, V-arrangement filler has certain elasticity, can compress valve rod diametrically, makes the motive sealing that valve rod can be good in movement process.In addition, arrange at spacer ring place and be filled with sealing compound, improve filling-material structure tightness.
Further, the V angle of described first V-arrangement filler upward, the V angle of the second V-arrangement filler down, avoid V angle that workman causes because of wrongly installed V-arrangement filler direction and cannot open and occur axial clearance.
Further, described first V-arrangement filler and the second V-arrangement filler are tetrafluoro filler, and tetrafluoro filler has good corrosion resistance, can prevent from causing packing seal to occur the situation that fugacity is revealed because of corrosion;
Further, described sealing compound is polysulfide sealant, has good tightness and water proofing property.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum valve packing seal structure embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: 1-Gland, 2-O RunddichtringO, 3-first liner, 4-first V-arrangement tetrafluoro filler, 5-second liner, 6-spacer ring, 7-the 3rd liner, 8-second V-arrangement tetrafluoro filler, 9-the 4th liner, 10-heelpiece, 11-valve rod.
Embodiment is substantially as shown in drawings: vacuum valve packing seal structure, is positioned at the packing cavity of valve gap, and valve rod 11 axially runs through this packing cavity.Vacuum valve packing seal structure in the present embodiment, comprise Gland 1, Gland 1 is positioned at the upper end-hole of packing cavity and this upper end-hole is closed, Gland 1 only leaves the valve rod hole moved for valve rod 11, the valve rod hole inwall of Gland 1 opens Packed groove, loads O RunddichtringO 2 in this groove.
The bottom of packing cavity is provided with heelpiece 10, be disposed with between Gland 1 and heelpiece 10 the V angle of the first liner 3, first V-arrangement tetrafluoro filler 4, second liner 5, spacer ring 6, the 3rd liner 7, second V-arrangement tetrafluoro filler 8 and the 4th liner 9, first V-arrangement tetrafluoro filler 4 upward, the V angle of the second V-arrangement tetrafluoro filler 8 down.Spacer ring 6 is between the second liner 5 and the 3rd liner 7, and the axial pressure of Gland 1 is prevented because filler part is long equably step by step on filler, and the pressure of Gland 1 makes filler part bend.Spacer ring 6, between the second liner 5 and the 3rd liner 7, is filled and is injected polysulfide sealant, can improve the tightness of filler part.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. vacuum valve packing seal structure, comprise the Gland of closed valve gap packing cavity upper end-hole, it is characterized in that, the inwall of described Gland has sealed groove, is provided with O RunddichtringO in sealing groove; The bottom of packing cavity is provided with heelpiece, the first liner, the first V-arrangement filler second liner, spacer ring, the 3rd liner, the second V-arrangement filler and the 4th liner is disposed with between Gland and heelpiece, the V angle opening direction of the first V-arrangement filler and the second V-arrangement filler is contrary, and spacer ring place arranges and is filled with sealing compound.
2. vacuum valve packing seal structure according to claim 1, is characterized in that: the V angle of described first V-arrangement filler upward, the V angle of the second V-arrangement filler down.
3. vacuum valve packing seal structure according to claim 2, is characterized in that: described first V-arrangement filler and the second V-arrangement filler are tetrafluoro filler.
4. vacuum valve packing seal structure according to claim 2, is characterized in that: described sealing compound is polysulfide sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595550.2A CN104329463A (en) | 2014-10-30 | 2014-10-30 | Vacuum valve packing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595550.2A CN104329463A (en) | 2014-10-30 | 2014-10-30 | Vacuum valve packing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329463A true CN104329463A (en) | 2015-02-04 |
Family
ID=52404237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595550.2A Pending CN104329463A (en) | 2014-10-30 | 2014-10-30 | Vacuum valve packing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119354A (en) * | 2018-02-26 | 2018-06-05 | 克拉玛依胜利高原机械有限公司 | Glue injection type plunger pump gland packing box |
| CN109253308A (en) * | 2018-11-29 | 2019-01-22 | 凯斯特阀门集团有限公司 | It is a kind of for improving the filling-material structure for having the sealing performance of valve rod valve |
-
2014
- 2014-10-30 CN CN201410595550.2A patent/CN104329463A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119354A (en) * | 2018-02-26 | 2018-06-05 | 克拉玛依胜利高原机械有限公司 | Glue injection type plunger pump gland packing box |
| CN109253308A (en) * | 2018-11-29 | 2019-01-22 | 凯斯特阀门集团有限公司 | It is a kind of for improving the filling-material structure for having the sealing performance of valve rod valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |