CN106523785A - V-shaped structure valve rod sealing padding - Google Patents
V-shaped structure valve rod sealing padding Download PDFInfo
- Publication number
- CN106523785A CN106523785A CN201611054076.8A CN201611054076A CN106523785A CN 106523785 A CN106523785 A CN 106523785A CN 201611054076 A CN201611054076 A CN 201611054076A CN 106523785 A CN106523785 A CN 106523785A
- Authority
- CN
- China
- Prior art keywords
- packing ring
- padding
- ring
- shape
- annular groove
- 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
-
- 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
Abstract
The invention relates to a V-shaped structure valve rod sealing padding. The V-shaped structure valve rod sealing padding comprises an upper padding unit, a middle padding unit and a lower padding unit which are sequentially arranged on a valve rod from top to bottom in a sleeving mode and stacked. The upper padding unit comprises an upper padding ring. The upper end face of the upper padding ring is a plane, an annular groove sunken upwards is formed in the lower end face of the upper padding ring, and the section of the annular groove is in a V shape. The middle padding unit comprises a plurality of middle padding rings sequentially stacked from top to bottom. An annular protrusion protruding upwards is formed in the upper end face of each middle padding ring, and the section of the annular protrusion is in a V shape. An annular groove sunken upwards is formed in the lower end face of each middle padding ring, and the section of the annular groove is in a V shape. The lower padding unit comprises a lower padding ring. The lower end face of the lower padding ring is a plane, an annular protrusion protruding upwards is formed in the upper end face of the lower padding ring, and the section of the annular protrusion is in a V shape. The V-shaped structure valve rod sealing padding has the advantages that the padding is radially deformed when stressed axially through the angle difference of the sunken and protruding V shapes, sealing of the valve rod of a valve is facilitated, and sealing is reliable.
Description
Technical field
The present invention relates to a kind of valve, more particularly to a kind of v-shaped structure valve stem packing.
Background technology
In order that movement parts valve rod is lower in working order to ensure sealing, packing seal need to be provided with valve body top, this is close
Seal apparatus are made up of parts such as hold-down grid, filler pressing sleeve, locking nut, fillers, in order that valve rod and filler are in relative wear
After can carry out sealing force and compensate, typically can also increase by one group of spring below locking nut, to ensure in valve using grinding
After damage, discharged by the accumulation of energy of spring, it is close so as to ensure the reliability that filler has continuable pretightning force to ensure the position
Envelope.
At present, the common fillers for using on valve are PTFE or soft graphite, wherein, the big portion of flexible graphite packing
It is divided into the circular ring structure of lower planes setting, as shown in figure 1, and for single graphite packing generally uses flexible stone
Molding mode of the black reel to parcel.Using the graphite packing of this structure during work, when graphite packing is being subject to
Deformation is not susceptible to during axial compressive force, is unfavorable for the sealing at valve rod position, further, since graphite packing uses axial direction
The mode of parcel, easily produces normal pressure to stem surface, increases the frictional resistance of valve handle activity formula.
The content of the invention
The technical problem to be solved in the present invention is to provide the little v-shaped structure valve stem seal of a kind of sealed reliable, frictional resistance
Filler.
To solve above-mentioned technical problem, the technical scheme is that：A kind of v-shaped structure valve stem packing, its innovation
Put and be：The airtight and watertight padding for sealing to valve rod, including
Upper filler unit, middle filler unit and the lower filler unit for being from top to bottom sleeved on successively on valve rod and stacking；
The upper filler unit includes packing ring on, and on this, the upper surface of packing ring is plane, and lower surface is recessed upwards for one
The annular groove that is in the shape of the letter V of section；
The middle filler unit includes some middle packing ring for from top to bottom stacking gradually, and the upper surface of middle packing ring is one upwards
The annular protrusion that the section of protrusion is in the shape of the letter V, lower surface are the annular groove that a section being recessed upwards is in the shape of the letter V, so that
Obtain entirely middle packing ring and form the circulus that a section is in the shape of the letter V, fill out during upper end is located in two adjacent middle packing rings
The annular groove of material ring is just fitted together to the annular protrusion of the middle packing ring positioned at lower end, and the ring of the middle packing ring positioned at the top
Shape projection is embedded just below in the annular groove of packing ring lower surface；
The lower filler unit includes packing ring, and the lower surface of the lower packing ring is plane, and upper surface is protruding upward
The annular protrusion that section is in the shape of the letter V, and the annular protrusion is embedded just below in the annular groove of the middle packing ring of bottom.
Further, the upper packing ring, middle packing ring and lower packing ring are formed by some graphite papers stacking.
It is an advantage of the current invention that：Filler unit in the present invention adopts upper packing ring, middle packing ring and lower packing ring heap
Folded mode, for the upper surface of upper packing ring and the lower surface of lower packing ring are by the way of plane, it is ensured that whole filler
The sealing of the upper and lower end face of unit, simultaneously for middle packing ring in the form of v-shaped structure, and the lower surface of upper packing ring is with
The upper surface of packing ring separately designs the fit form for annular groove, annular protrusion, using setting for this concave-convex V type differential seat angle
When meter makes filler receive axial compressive force, deform in radial direction, be conducive to the sealing at valve rod position, sealed reliable.
For upper packing ring, middle packing ring and lower packing ring are molded by the way of some graphite papers stacking is formed, from
And have traditional axial direction parcel to change into radially stacked mode, radial deformation is reduced, so that filler is reduced to valve rod table
The normal pressure in face, reduces frictional resistance.
Description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the schematic diagram of traditional sealing ring.
Fig. 2 is the schematic diagram of the upper packing ring of the v-shaped structure valve stem packing of the present invention.
Fig. 3 is the schematic diagram of the middle packing ring of the v-shaped structure valve stem packing of the present invention.
Fig. 4 is the schematic diagram of the lower packing ring of the v-shaped structure valve stem packing of the present invention.
Fig. 5 is the schematic diagram of the v-shaped structure valve stem packing of the present invention.
Specific embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but not therefore by this
It is bright be limited in described scope of embodiments among.
A kind of v-shaped structure valve stem packing as Figure 2-Figure 5, the airtight and watertight padding for sealing to valve rod,
Including the upper filler unit, middle filler unit and the lower filler unit that are from top to bottom sleeved on successively on valve rod and stack.
Upper filler unit includes packing ring 1 on, as shown in Fig. 2 on this packing ring 1 upper surface be plane, lower surface
For the annular groove 2 that the section that is recessed upwards is in the shape of the letter V.
Middle filler unit includes some middle packing ring 3 for from top to bottom stacking gradually, as shown in figure 3, middle packing ring 3 is upper
End face is the annular protrusion 4 that a section protruding upward is in the shape of the letter V, and lower surface is the ring that a section being recessed upwards is in the shape of the letter V
Connected in star 5, so that packing ring 3 forms the circulus that a section is in the shape of the letter V, two adjacent middle packing rings 3 in whole
In be located at upper end the annular groove 5 of middle packing ring 3 be just fitted together to the annular protrusion 4 of the middle packing ring 3 positioned at lower end, and be located at
The annular protrusion 4 of the middle packing ring 3 of the top is embedded just below in the annular groove 2 of 1 lower surface of packing ring.
Lower filler unit includes packing ring 6, as shown in figure 4, the lower surface of the lower packing ring 6 is plane, upper surface
For the annular protrusion 7 that section protruding upward is in the shape of the letter V, and the annular protrusion 7 is embedded just below the middle packing ring 3 positioned at bottom
Annular groove 5 in.
Upper packing ring 1, middle packing ring 3 and lower packing ring 6 are formed by some graphite papers stacking.For upper packing ring 1, in
Packing ring 3 and lower packing ring 6 are molded by the way of some graphite papers stacking is formed, so as to there is traditional axial direction parcel to change
For radially stacked mode, radial deformation is reduced, so as to reduce normal pressure of the filler to stem surface, reduce friction resistance
Power.
Filler unit in the present invention using upper packing ring 1, middle packing ring 3 and lower packing ring 6 stacking by the way of, for upper
The lower surface of the upper surface of packing ring 1 and lower packing ring 6 is by the way of plane, it is ensured that the upper and lower end face of whole filler unit
Sealing, simultaneously for middle packing ring 3 in the form of v-shaped structure, and the lower surface of upper packing ring 1 is upper with lower packing ring 6
End face separately designs the fit form for annular groove, annular protrusion, receives filler using the design of this concave-convex V type differential seat angle
During axial compressive force, deform in radial direction, be conducive to the sealing at valve rod position, sealed reliable.
It should be understood by those skilled in the art that, the present invention is not restricted to the described embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements are both fallen within scope of the claimed invention.The claimed scope of the invention
By appending claims and its equivalent thereof.
Claims (2)
1. a kind of v-shaped structure valve stem packing, it is characterised in that：The airtight and watertight padding for sealing to valve rod, including
Upper filler unit, middle filler unit and the lower filler unit for being from top to bottom sleeved on successively on valve rod and stacking；
The upper filler unit includes packing ring on, and on this, the upper surface of packing ring is plane, and lower surface is recessed upwards for one
The annular groove that is in the shape of the letter V of section；
The middle filler unit includes some middle packing ring for from top to bottom stacking gradually, and the upper surface of middle packing ring is one upwards
The annular protrusion that the section of protrusion is in the shape of the letter V, lower surface are the annular groove that a section being recessed upwards is in the shape of the letter V, so that
Obtain entirely middle packing ring and form the circulus that a section is in the shape of the letter V, fill out during upper end is located in two adjacent middle packing rings
The annular groove of material ring is just fitted together to the annular protrusion of the middle packing ring positioned at lower end, and the ring of the middle packing ring positioned at the top
Shape projection is embedded just below in the annular groove of packing ring lower surface；
The lower filler unit includes packing ring, and the lower surface of the lower packing ring is plane, and upper surface is protruding upward
The annular protrusion that section is in the shape of the letter V, and the annular protrusion is embedded just below in the annular groove of the middle packing ring of bottom.
2. v-shaped structure valve stem packing according to claim 1, it is characterised in that：The upper packing ring, middle packing ring
And lower packing ring is formed by some graphite papers stacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054076.8A CN106523785A (en) | 2016-11-25 | 2016-11-25 | V-shaped structure valve rod sealing padding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054076.8A CN106523785A (en) | 2016-11-25 | 2016-11-25 | V-shaped structure valve rod sealing padding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523785A true CN106523785A (en) | 2017-03-22 |
Family
ID=58356881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054076.8A Pending CN106523785A (en) | 2016-11-25 | 2016-11-25 | V-shaped structure valve rod sealing padding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523785A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483097A1 (en) * | 1990-10-12 | 1992-04-29 | Fisher Controls International, Inc. | Zero clearance anti-extrusion rings for containment of PTFE packing |
| CN2450450Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Valve for gas cylinder |
| CN2679452Y (en) * | 2004-03-04 | 2005-02-16 | 倪静丰 | Combined filler |
| CN201757217U (en) * | 2010-07-16 | 2011-03-09 | 上海以琳石油机械制造有限公司 | Valve stem high-temperature sealing device |
| CN202056304U (en) * | 2011-06-04 | 2011-11-30 | 大庆开发区庆慈密封件有限公司 | Expansion graphite packing ring |
| CN203628007U (en) * | 2013-10-31 | 2014-06-04 | 天津百利展发集团有限公司 | Composite packing seal structure |
| CN206221788U (en) * | 2016-11-25 | 2017-06-06 | 南通龙源电站阀门有限公司 | A kind of v-shaped structure valve stem packing |
-
2016
- 2016-11-25 CN CN201611054076.8A patent/CN106523785A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483097A1 (en) * | 1990-10-12 | 1992-04-29 | Fisher Controls International, Inc. | Zero clearance anti-extrusion rings for containment of PTFE packing |
| CN2450450Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Valve for gas cylinder |
| CN2679452Y (en) * | 2004-03-04 | 2005-02-16 | 倪静丰 | Combined filler |
| CN201757217U (en) * | 2010-07-16 | 2011-03-09 | 上海以琳石油机械制造有限公司 | Valve stem high-temperature sealing device |
| CN202056304U (en) * | 2011-06-04 | 2011-11-30 | 大庆开发区庆慈密封件有限公司 | Expansion graphite packing ring |
| CN203628007U (en) * | 2013-10-31 | 2014-06-04 | 天津百利展发集团有限公司 | Composite packing seal structure |
| CN206221788U (en) * | 2016-11-25 | 2017-06-06 | 南通龙源电站阀门有限公司 | A kind of v-shaped structure valve stem packing |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |