CN105318096A - Valve rod sealing device - Google Patents
Valve rod sealing device Download PDFInfo
- Publication number
- CN105318096A CN105318096A CN201510900587.6A CN201510900587A CN105318096A CN 105318096 A CN105318096 A CN 105318096A CN 201510900587 A CN201510900587 A CN 201510900587A CN 105318096 A CN105318096 A CN 105318096A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- filler
- flange
- casting die
- sealing device
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 239000000945 filler Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 26
- 238000005056 compaction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
Abstract
The invention relates to a valve rod sealing device. The valve rod sealing device comprises a sleeve sleeving the outer side of a valve rod, filler for sealing the valve rod and pressing components and compacting mechanisms used for compacting the filler; the sleeve comprises an upper sleeve and a lower sleeve; the filler and the pressing components are located between the upper sleeve and the lower sleeve; the filler is close to the valve rod; the inner side parts of the pressing components are pressed against the periphery of the filler; the outer side parts of the pressing components are provided with first arc slopes; the lower sleeve is provided with a second arc slope matched with the outer side parts of the pressing components; the compacting mechanisms are used for compacting the upper sleeve and the lower sleeve together axially; and when the compacting mechanisms perform compacting, the filler is axially compacted by the pressing components through the first arc slopes. By adopting the valve rod sealing device, the sealing property and operation handfeel of the valve rod can be regulated and taken into account.
Description
Technical field
The present invention relates to valve field, particularly relate to a kind of valve rod sealing device.
Background technique
At present, the structure of valve comprises valve body, is provided with valve pocket in valve body, is provided with spool in valve pocket, and spool is connected with valve rod.All can use the valve with multiple tributary in the every field such as agriculture, industrial, but existing valve rod not only stability is not high, and easily occurs leaking.Especially for can to rotate and can the valve rod of axial stretching movement, valve stem seal is a difficult problem always.Because should ensure the rotation of valve rod and upper and lower telescopic movable, seal again, but also after will guaranteeing to wear and tear, sealability is adjustable, is an extremely difficult thing.
Summary of the invention
In order to solve for can to rotate and can the sealing problem of valve rod of axial stretching movement, goal of the invention of the present invention is to provide a kind of valve rod sealing device, and this valve rod sealing device can adjust and take into account sealing and the feel of valve rod.
In order to realize foregoing invention object, present invention employs following technological scheme:
Valve rod sealing device, comprise be enclosed within sleeve outside valve rod, sealed valve stem filler, for compressing casting die and the hold-down mechanism of filler; Described sleeve comprises upper bush and lower sleeve; Filler and casting die are all between upper bush and lower sleeve, and filler is near described valve rod, and casting die inside portion is against filler periphery, and casting die lateral part is provided with the first curve slope, and lower sleeve is provided with the second curve slope coordinated with described casting die lateral part; Described hold-down mechanism is for the hold down gag by described upper bush and the axial pressing of lower sleeve; When hold-down mechanism compresses, order about described casting die radial compaction filler by the first curve slope.
Further, the second flange that described hold-down mechanism comprises the first flange that upper bush radial direction protrudes, lower sleeve radial direction is protruded and multiple fastening piece for fastening first flange and the second flange; Each described fastening piece includes turnbuckle and screw rod, and the first flange is provided with the through hole that diameter is greater than screw rod, and the second flange that through hole is corresponding is provided with the tapped hole mated with described screw rod, and screw rod lower end is threaded on the second flange by tapped hole; Turnbuckle is screwed in the screw rod top through through hole, and screw portion between the first flange and turnbuckle is nested with Compress Spring.
Further, described casting die is an open loop, or is made up of multiple arcuate member surrounding ring.
Further, described upper bush is also provided with the charging hole of bonding pad, charging hole is axially arranged.
Compared with prior art, have employed the valve rod sealing device of technique scheme, there is following beneficial effect:
One, by valve rod sealing device, the sealing of valve rod is adjustable, can ensure activity feel and the sealing of valve rod, and can adjust after using a period of time.
Two, the even high sealing force sealing of whole of filler changes the sealing line of force region high sealing force sealing near sealing liquid regional seal end into, and all the other sealing forces reduce, and good sealing effect, is beneficial to the activity of valve rod more, reduces the wearing and tearing of valve rod simultaneously.
Three, valve rod sealing device structure is simply novel, and cost is low, but good sealing effect.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of valve rod sealing device of the present invention;
Fig. 2 is the sectional view at B-B place in Fig. 1 of the present invention;
Fig. 3 is portion's enlarged view at A place in Fig. 1 of the present invention;
Fig. 4 is the schematic diagram of valve rod sealing device sealing force distribution.
Reference character: 3, valve rod; 7, sleeve; 71, upper bush; 711, the first flange; 712, charging hole; 72, filler; 73, casting die; 731, the first curve slope; 74, lower sleeve; 741, the second flange; 8, hold-down mechanism; 81, turnbuckle; 80, screw rod; 82, Compress Spring;
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
A kind of valve rod sealing device as shown in Figures 1 to 4, this valve rod sealing device is mainly rounded for valve rod 3 cross section, and valve rod 3 operation should rotate valve rod axially movable again.
This valve rod sealing device comprise be enclosed within sleeve 7 outside valve rod, sealed valve stem filler 72, for compressing casting die 73 and the hold-down mechanism 8 of filler.And sleeve 7 comprises upper bush 71 and lower sleeve 74.Filler 72 and casting die 73 are all between upper bush 71 and lower sleeve 74, and because valve rod 3 is the rounded polished rods in cross section, filler 72 also surrounds annular, is positioned at outside valve rod 3.And casting die 73 inside portion is against filler 72 periphery, casting die 73 lateral part is provided with the first curve slope 731, and lower sleeve 74 is provided with the second curve slope coordinated with casting die 73 lateral part.Hold-down mechanism 8 is for the hold down gag by described upper bush 71 and the axial pressing of lower sleeve 74.When hold-down mechanism 8 compresses, order about described casting die 73 radial compaction filler 72 by curve slope.In order to ensure that the madial wall of casting die 73 can be radial to central pressing filler 72, casting die 73 is preferably made up of multiple arcuate member surrounding ring.Certain casting die 73 also can be an open loop.
The second flange 741 that above-mentioned hold-down mechanism 8 comprises the first flange 711 that upper bush 71 radial direction protrudes, lower sleeve 74 radial direction is protruded and multiple fastening piece for fastening first flange 711 and the second flange 741.Each described fastening piece includes turnbuckle 81 and screw rod 80, first flange 711 is provided with the through hole that diameter is greater than screw rod 80, the second flange 741 that through hole is corresponding is provided with the tapped hole mated with described screw rod 80, and screw rod lower end is threaded on the second flange 741 by tapped hole.Turnbuckle 81 is screwed in screw rod 80 top through through hole, and screw rod 80 part between the first flange 711 and turnbuckle 81 is nested with Compress Spring 82.
When screwing turnbuckle 81, turnbuckle 81 pressing Compress Spring 82, makes the first flange 711 and the second flange 741 axial compression, thus makes upper bush 71 and the axial pressing of lower sleeve 74.Casting die 73 lateral part is provided with the first curve slope 731, is specifically positioned at the downside of casting die 73 lateral part, and what be mated is the second curve slope of lower sleeve 74.The below that valve rod 3 stretches into belongs to one end of needs sealing, and top belongs to extraneous, and the sagittal plane corresponding to above-mentioned first curve slope 731 is positioned at the bottom of filler 72, and therefore, object is in order to the impacting force of the filler 72 near sealed end is greater than away from sealed end.As shown in Figure 4, the location comparison that the impacting force of filler 72 is maximum is little, and near sealing liquid regional seal end good sealing effect, in turn ensure that the activity performance of valve rod 3.
Above-mentioned upper bush 71 is also provided with the charging hole 712 of bonding pad 72, charging hole 712 is axially arranged.
The above makes the preferred embodiment of the present invention, and under not departing from the prerequisite of the principle of the invention for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection scope of the present invention.
Claims (4)
1. a valve rod sealing device, is characterized in that: comprise be enclosed within sleeve (7) outside valve rod, sealed valve stem filler (72), for compressing casting die (73) and the hold-down mechanism (8) of filler; Described sleeve (7) comprises upper bush (71) and lower sleeve (73); Filler (72) and casting die (73) are all positioned between upper bush (71) and lower sleeve (73), filler (72) is near described valve rod (3), it is peripheral that casting die (73) inside portion is against filler (72), casting die (73) lateral part is provided with the first curve slope (731), and lower sleeve (73) is provided with the second curve slope coordinated with described casting die (73) lateral part; Described hold-down mechanism (8) is for the hold down gag by described upper bush (71) and lower sleeve (73) axial pressing; When hold-down mechanism (8) compresses, order about described casting die (73) radial compaction filler (72) by the first curve slope (731).
2. a kind of valve rod sealing device according to claim 1, is characterized in that: the second flange (741) that described hold-down mechanism (8) comprises the first flange (711) that upper bush (71) radial direction protrudes, lower sleeve (74) radial direction is protruded and multiple fastening piece for fastening first flange (711) and the second flange (741); Each described fastening piece includes turnbuckle (81) and screw rod (80), first flange (711) is provided with the through hole that diameter is greater than screw rod (80), the second flange (741) that through hole is corresponding is provided with the tapped hole mated with described screw rod (80), and screw rod lower end is threaded on the second flange (741) by tapped hole; Turnbuckle (81) is screwed in screw rod (80) top through through hole, and screw rod (80) part between the first flange (711) and turnbuckle (81) is nested with Compress Spring (82).
3. a kind of valve rod sealing device according to claim 1 and 2, is characterized in that: described casting die (73) is an open loop, or is made up of multiple arcuate member surrounding ring.
4. a kind of valve rod sealing device according to claim 1 and 2, is characterized in that: the charging hole (712) described upper bush (71) being also provided with bonding pad (72), and charging hole (712) is axially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900587.6A CN105318096B (en) | 2015-12-09 | 2015-12-09 | Valve rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900587.6A CN105318096B (en) | 2015-12-09 | 2015-12-09 | Valve rod sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318096A true CN105318096A (en) | 2016-02-10 |
| CN105318096B CN105318096B (en) | 2018-03-16 |
Family
ID=55246104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510900587.6A Active CN105318096B (en) | 2015-12-09 | 2015-12-09 | Valve rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105318096B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US455636A (en) * | 1891-07-07 | Charles j | ||
| CH674404A5 (en) * | 1987-11-17 | 1990-05-31 | Manuel Brechbuehl | Labyrinth packing - made of specified plastic and adjustable from labyrinth to contact seal |
| WO2000053959A1 (en) * | 1999-03-10 | 2000-09-14 | Ice Corporation Limited | Self-aligning shaft support |
| CN201466224U (en) * | 2009-07-31 | 2010-05-12 | 安费诺科耐特(西安)科技有限公司 | Adaptive structure with semi-rigid line |
| CN102022539A (en) * | 2009-09-18 | 2011-04-20 | 上海冠龙阀门机械有限公司 | Inverse pressing shaft rod sealing structure |
| CN201944473U (en) * | 2010-11-10 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | Compensator with filler compacting structure |
| CN202484427U (en) * | 2012-01-14 | 2012-10-10 | 重庆海王仪器仪表有限公司 | Butterfly valve filler compensation device |
| CN205155335U (en) * | 2015-12-09 | 2016-04-13 | 王欣 | Valve stem sealing device |
-
2015
- 2015-12-09 CN CN201510900587.6A patent/CN105318096B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US455636A (en) * | 1891-07-07 | Charles j | ||
| CH674404A5 (en) * | 1987-11-17 | 1990-05-31 | Manuel Brechbuehl | Labyrinth packing - made of specified plastic and adjustable from labyrinth to contact seal |
| WO2000053959A1 (en) * | 1999-03-10 | 2000-09-14 | Ice Corporation Limited | Self-aligning shaft support |
| CN201466224U (en) * | 2009-07-31 | 2010-05-12 | 安费诺科耐特(西安)科技有限公司 | Adaptive structure with semi-rigid line |
| CN102022539A (en) * | 2009-09-18 | 2011-04-20 | 上海冠龙阀门机械有限公司 | Inverse pressing shaft rod sealing structure |
| CN201944473U (en) * | 2010-11-10 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | Compensator with filler compacting structure |
| CN202484427U (en) * | 2012-01-14 | 2012-10-10 | 重庆海王仪器仪表有限公司 | Butterfly valve filler compensation device |
| CN205155335U (en) * | 2015-12-09 | 2016-04-13 | 王欣 | Valve stem sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105318096B (en) | 2018-03-16 |
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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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Hongbo Inventor after: Meng Qiang Inventor after: Yan Ganshun Inventor after: Wei Feng Inventor after: Zhang Yong Inventor before: Wang Xin |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20180211 Address after: 224051 Fengxiang Road, environmental protection industrial park, Yancheng City Pavilion Lake District, Yancheng City, Jiangsu Applicant after: JIANGSU CHNV INSTRUMENT CONTROL ENGINEERING CO., LTD. Address before: Wencheng County of Wenzhou City, Zhejiang province 325300 rocky mountain village 29 No. 11 overseas Chinese town Applicant before: Wang Xin |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Valve-rod sealer, and stop valve, brake valve and spherical valve therewith Effective date of registration: 20200408 Granted publication date: 20180316 Pledgee: Jiangsu Credit Financing Guarantee Co., Ltd. Pledgor: JIANGSU CHNV INSTRUMENT CONTROL ENGINEERING Co.,Ltd. Registration number: Y2020980001347 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201021 Granted publication date: 20180316 Pledgee: Jiangsu Credit Financing Guarantee Co.,Ltd. Pledgor: JIANGSU CHNV INSTRUMENT CONTROL ENGINEERING Co.,Ltd. Registration number: Y2020980001347 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Valve stem sealing device Effective date of registration: 20201022 Granted publication date: 20180316 Pledgee: Jiangsu Credit Financing Guarantee Co.,Ltd. Pledgor: JIANGSU CHNV INSTRUMENT CONTROL ENGINEERING Co.,Ltd. Registration number: Y2020980007067 |