CN206786121U - A kind of sealing structure of pressure equalizing blow off valve valve rod - Google Patents
A kind of sealing structure of pressure equalizing blow off valve valve rod Download PDFInfo
- Publication number
- CN206786121U CN206786121U CN201720457508.3U CN201720457508U CN206786121U CN 206786121 U CN206786121 U CN 206786121U CN 201720457508 U CN201720457508 U CN 201720457508U CN 206786121 U CN206786121 U CN 206786121U
- Authority
- CN
- China
- Prior art keywords
- silica gel
- valve
- sealing ring
- valve rod
- gel sealing
- 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
It the utility model is related to a kind of plant equipment sealing structure, and in particular to a kind of sealing structure of pressure equalizing blow off valve valve rod.The utility model includes valve body, valve rod, annular seal space, silica gel sealing ring and pressing plate, the annular seal space is that tubular penetrates cavity, annular seal space lower end connects with valve body valve stem port, silica gel sealing ring is arranged in annular seal space, pressing plate is connected with annular seal space upper end by adjustable connector, the lower face of pressing plate contacts with the extruding of silica gel sealing ring upper end, and the valve rod stretches to valve body through silica gel sealing ring.The utility model uses potted component of the silica gel sealing ring as valve rod, the transversely deforming amount of silica gel sealing ring is adjusted by adjusting pressing plate to the pressure of silica gel sealing ring, for making up the gap after silica gel sealing ring wears between valve rod, so as to reach the purpose of the sealing structure Quick overhaul of valve rod.
Description
Technical field
It the utility model is related to a kind of plant equipment sealing structure, and in particular to a kind of sealing knot of pressure equalizing blow off valve valve rod
Structure.
Background technology
The control valve that batch can coal gas is pressed and diffused when blast furnace gas pressure equalizing blow off valve is blast furnace blowing, blast furnace burden
Hopper is poured into by hoisting equipment, batch can is released pressure inside the Pass by diffusion valve, the pressure of batch can is equal to atmospheric pressure,
Furnace charge is flowed under the influence of gravity into batch can in hopper, closes upper sealing valve, is opened equalizing valve and is carried out punching press to batch can, makes material
The pressure of tank is equal with furnace pressure, then carries out cloth to blast furnace by distributing device again.
Pressure equalizing blow off valve is one of blast furnace material drain system key equipment, and the sealing of pressure equalizing blow off valve uses hard sealing ring,
Due to motion when valve rod carries out reciprocal, with the passage of usage time, abrasion causes for a long time between valve rod and hard sealing ring
Gap increases, and gas pressure is 12 times of atmospheric pressure in valve, and coal gas will pass through the gap of valve rod and hard sealing ring in valve body
Leakage, due to the moisture contained in coal gas and substantial amounts of dust, it is serious to will result in valve rod gas leak in a short time, hard sealing
Can not scene changed, it is necessary to return factory and reprocessed, simultaneously because coal gas largely leaks, cause live gas content to surpass
Mark, the personal safety of serious threat on-site personnel.
Utility model content
The purpose of this utility model is to provide a kind of maintenance the problem of for prior art presence fast and easily to press
Dissipate the sealing structure of valve valve rod.
Concrete technical scheme of the present utility model is as follows：
A kind of sealing structure of pressure equalizing blow off valve valve rod, valve body and valve rod, in addition to annular seal space, silica gel sealing ring and pressure
Plate, the annular seal space are that tubular penetrates cavity, and annular seal space lower end connects with valve body valve stem port, and silica gel sealing ring is arranged at annular seal space
Interior, pressing plate is connected with annular seal space upper end by adjustable connector, and lower face and the extruding of silica gel sealing ring upper end of pressing plate connect
Touch, the valve rod stretches to valve body through silica gel sealing ring；
The silica gel sealing ring bottom is cylindrical structural, and top is conical structure；
Lubrication groove is provided with the front cover of the silica gel sealing ring；
The silica gel sealing ring quantity is at least two, and the arranged in co-axial alignment in annular seal space；
The adjustable connector is regulating bolt.
The utility model has the advantages that：
The utility model uses potted component of the silica gel sealing ring as valve rod, by adjusting pressing plate to silica gel sealing ring
Pressure adjusts the transversely deforming amount of silica gel sealing ring, for making up the gap after silica gel sealing ring abrasion between valve rod, so as to
Reach the purpose of the sealing structure Quick overhaul of valve rod.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of silica gel sealing ring of the present utility model.
Embodiment
A kind of sealing structure of pressure equalizing blow off valve valve rod as depicted in figs. 1 and 2, valve body 1 and valve rod 2, in addition to annular seal space
3rd, silica gel sealing ring 4 and pressing plate 5, the annular seal space 3 are that tubular penetrates cavity, and the lower end of annular seal space 3 connects with the valve stem port of valve body 1
Logical, silica gel sealing ring 4 is arranged in annular seal space 3, and pressing plate 5 is connected with the upper end of annular seal space 3 by adjustable connector, pressing plate 5
The extruding of lower face and the upper end of silica gel sealing ring 4 contact, the valve rod 2 stretches to valve body 1, the silicon through silica gel sealing ring 4
The bottom of glue sealing ring 4 is cylindrical structural, and top is conical structure, and lubrication is provided with the front cover of the silica gel sealing ring 4
Groove 6, the quantity of silica gel sealing ring 4 are at least two, and the arranged in co-axial alignment in annular seal space 3, and the adjustable connector is
Regulating bolt 7.
The utility model sealing principle is as follows：
Sealing is filled in space between valve rod 2 and annular seal space 3 by silica gel sealing ring 4, prevents the gas leak in valve body 1；
In the lubrication groove 6 of silica gel sealing ring 4 oil injecting lubricating oil, for valve rod 2 relative to silica gel sealing ring 4 move when lubrication, have simultaneously
There is fluid sealing；After using a period of time, for silica gel sealing ring 4 after being worn during valve rod 2 is moved through, silica gel is close
Gap is produced between seal 4 and valve rod 2, increases pressure of the pressing plate 5 to silica gel sealing ring 4 by adjusting adjustable connector,
So that the transversely deforming of silica gel sealing ring 4 is overhauled convenient and swift so as to make up the gap between silica gel sealing ring 4 and valve rod 2；Due to
The top of silica gel sealing ring 4 uses conical structure, and the pressure that pressing plate 5 applies to silica gel sealing ring 4 can become silica gel sealing ring 4
Shape degree is more uniform.
Claims (5)
1. a kind of sealing structure of pressure equalizing blow off valve valve rod, valve body (1) and valve rod (2), it is characterised in that：Also include annular seal space
(3), silica gel sealing ring (4) and pressing plate (5), the annular seal space (3) are that tubular penetrates cavity, annular seal space (3) lower end and valve body
(1) valve stem port is connected, and silica gel sealing ring (4) is arranged in annular seal space (3), and pressing plate (5) passes through adjustable with annular seal space (3) upper end
Attachment means connect, and the lower face of pressing plate (5) contacts with the extruding of silica gel sealing ring (4) upper end, and the valve rod (2) is close through silica gel
Seal (4) stretches to valve body (1).
A kind of 2. sealing structure of pressure equalizing blow off valve valve rod as claimed in claim 1, it is characterised in that：The silica gel sealing ring
(4) bottom is cylindrical structural, and top is conical structure.
A kind of 3. sealing structure of pressure equalizing blow off valve valve rod as claimed in claim 1 or 2, it is characterised in that：The silica gel sealing
Enclose on the front cover of (4) and be provided with lubrication groove (6).
A kind of 4. sealing structure of pressure equalizing blow off valve valve rod as claimed in claim 1 or 2, it is characterised in that：The silica gel sealing
Circle (4) quantity is at least two, and in annular seal space (3) interior arranged in co-axial alignment.
A kind of 5. sealing structure of pressure equalizing blow off valve valve rod as claimed in claim 1, it is characterised in that：The adjustable connection dress
It is set to regulating bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457508.3U CN206786121U (en) | 2017-04-27 | 2017-04-27 | A kind of sealing structure of pressure equalizing blow off valve valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457508.3U CN206786121U (en) | 2017-04-27 | 2017-04-27 | A kind of sealing structure of pressure equalizing blow off valve valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206786121U true CN206786121U (en) | 2017-12-22 |
Family
ID=60709187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720457508.3U Expired - Fee Related CN206786121U (en) | 2017-04-27 | 2017-04-27 | A kind of sealing structure of pressure equalizing blow off valve valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206786121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081293A (en) * | 2018-09-03 | 2018-12-25 | 江苏新美星包装机械股份有限公司 | The drawing liquid auxiliary device of chemical container |
-
2017
- 2017-04-27 CN CN201720457508.3U patent/CN206786121U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081293A (en) * | 2018-09-03 | 2018-12-25 | 江苏新美星包装机械股份有限公司 | The drawing liquid auxiliary device of chemical container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20180427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |