CN105318096B - Valve rod sealing device - Google Patents
Valve rod sealing device Download PDFInfo
- Publication number
- CN105318096B CN105318096B CN201510900587.6A CN201510900587A CN105318096B CN 105318096 B CN105318096 B CN 105318096B CN 201510900587 A CN201510900587 A CN 201510900587A CN 105318096 B CN105318096 B CN 105318096B
- Authority
- CN
- China
- Prior art keywords
- casting die
- filler
- flange
- valve rod
- hold
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 238000005266 casting Methods 0.000 claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 29
- 238000005056 compaction Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 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 present invention relates to a kind of valve rod sealing device.A kind of valve rod sealing device, including it is enclosed on sleeve, filler, the casting die and hold-down mechanism for compressing filler of sealed valve stem on the outside of valve rod；The sleeve includes upper bush and lower sleeve；Filler and casting die are respectively positioned between upper bush and lower sleeve, and for filler close to the valve rod, casting die inside portion is against filler periphery, and casting die outside portion is provided with the first curve slope, and lower sleeve is provided with the second curve slope coordinated with the casting die outside portion；The hold-down mechanism is the pressing device for the upper bush and lower sleeve axially to be pressed；When hold-down mechanism compresses, the casting die radial compaction filler is driven by the first curve slope.The valve rod sealing device can adjust and take into account the sealing and operating handle of valve rod.
Description
Technical field
The present invention relates to valve field, more particularly to a kind of valve rod sealing device.
Background technology
At present, the structure of valve includes valve body, is provided with valve pocket in valve body, valve element is provided with valve pocket, is connected with valve element
Valve rod.The valve with multiple tributaries can be all used in every field such as agricultural, industry, however, existing valve rod is not only stablized
Property is not high, and easily leaks.In particular for it can rotate the valve rod that and can axial stretching moves for, valve stem seal
Always individual problem.Because the rotation of valve rod and upper and lower telescopic movable should be ensured, seal again, and be ensured that abrasion
Sealing property is adjustable afterwards, is an extremely difficult thing.
The content of the invention
In order to solve the sealing problem for the valve rod of and can axial stretching movement can be rotated, goal of the invention of the invention
It is to provide a kind of valve rod sealing device, the valve rod sealing device can adjust and take into account the sealing and feel of valve rod.
In order to realize foregoing invention purpose, present invention employs following technical scheme：
Valve rod sealing device, including it is enclosed on sleeve, filler, the casting die for compressing filler of sealed valve stem on the outside of valve rod
And hold-down mechanism；The sleeve includes upper bush and lower sleeve；Filler and casting die are respectively positioned between upper bush and lower sleeve, filler
Close to the valve rod, casting die inside portion is against filler periphery, and casting die outside portion is provided with the first curve slope, lower sleeve provided with
The second curve slope that the casting die outside portion coordinates；The hold-down mechanism is to be used to axially press the upper bush and lower sleeve
The pressing device of conjunction；When hold-down mechanism compresses, the casting die radial compaction filler is driven by the first curve slope.
Further, the first flange of the hold-down mechanism including upper bush radially protruding, the of lower sleeve radially protruding
Two flanges and multiple fasteners for being used to fasten the first flange and the second flange；Each fastener includes binding nut
And screw rod, the first flange are provided with the through hole that diameter is more than screw rod, the second flange corresponding to through hole is provided with and the screw rod
The screwed hole matched somebody with somebody, screw rod lower end are threaded on the second flange by screwed hole；Binding nut is screwed in the screw rod through through hole
Top, and it is nested with compression spring on the screw portion between the first flange and binding nut.
Further, the casting die is an open loop, or is made up of multiple arcuate members for surrounding ring.
Further, the charging hole of bonding pad is additionally provided with the upper bush, charging hole is axially arranged.
Compared with prior art, the valve rod sealing device of above-mentioned technical proposal is employed, is had the advantages that：
First, by valve rod sealing device, the sealing of valve rod is adjustable, it is ensured that the activity feel and sealing of valve rod,
And it can be adjusted using after a period of time.
2nd, the uniform high sealing force sealing of filler entire surface is changed to highly dense close to the sealing line of force region at sealing liquid regional seal end
Power sealing is sealed, remaining sealing force reduces, and good sealing effect is more favorable for the activity of valve rod, while reduces the abrasion of valve rod.
3rd, valve rod sealing device novelty simple in construction, cost is low, but good sealing effect.
Brief description of the drawings
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 in Fig. 1 of the present invention；
Fig. 3 is portion's enlarged drawing at A in Fig. 1 of the present invention；
Fig. 4 is the schematic diagram of valve rod sealing device sealing force distribution.
Reference：3rd, valve rod；7th, sleeve；71st, upper bush；711st, the first flange；712nd, charging hole；72nd, filler；73、
Casting die；731st, the first curve slope；74th, lower sleeve；741st, the second flange；8th, hold-down mechanism；81st, binding nut；80th, screw rod；
82nd, compression spring；
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.
A kind of valve rod sealing device as shown in Figures 1 to 4, the valve rod sealing device is primarily directed to the section of valve rod 3 in circle
Shape, and valve rod 3 operates the valve rod that should rotate axial direction activity again.
The valve rod sealing device includes being enclosed on sleeve 7 on the outside of valve rod, the filler 72 of sealed valve stem, for compressing filler
Casting die 73 and hold-down mechanism 8.And sleeve 7 includes upper bush 71 and lower sleeve 74.Filler 72 and casting die 73 are respectively positioned on upper bush 71
Between lower sleeve 74, because valve rod 3 is the rounded polished rod in section, filler 72 also surrounds annular, positioned at the outside of valve rod 3.And
The inside portion of casting die 73 is against the periphery of filler 72, and the outside portion of casting die 73 is provided with the first curve slope 731, and lower sleeve 74 is provided with and pressure
The second curve slope that the outside portion of part 73 coordinates.Hold-down mechanism 8 is to be used to axially press the upper bush 71 and lower sleeve 74
Pressing device.When hold-down mechanism 8 compresses, the radial compaction filler 72 of casting die 73 is driven by curve slope.In order to ensure
The madial wall of casting die 73 radially preferably can be made up of to central pressing filler 72, casting die 73 multiple arcuate members for surrounding ring.
Certain casting die 73 can also be an open loop.
Above-mentioned hold-down mechanism 8 includes the first flange 711 of the radially protruding of upper bush 71, the second of the radially protruding of lower sleeve 74
Flange 741 and multiple fasteners for being used to fasten the first flange 711 and the second flange 741.Each fastener includes
Binding nut 81 and screw rod 80, the first flange 711 are provided with the through hole that diameter is more than screw rod 80, the second flange corresponding to through hole
741 are provided with the screwed hole matched with the screw rod 80, and screw rod lower end is threaded on the second flange 741 by screwed hole.
Binding nut 81 is screwed in the top of screw rod 80 through through hole, and the screw rod 80 between the first flange 711 and binding nut 81
Compression spring 82 is nested with part.
When screwing binding nut 81, binding nut 81 presses compression spring 82 so that the first flange 711 and the second flange
741 axial compressions, so that the axially pressing of upper bush 71 and lower sleeve 74.The outside portion of casting die 73 is provided with the first curve slope
731, be particularly located at the downside of the outside portion of casting die 73, with its coordinate be lower sleeve 74 the second curve slope.Valve rod 3 stretches into
Lower section belong to one end that needs seal, top belongs to extraneous, and the sagittal plane corresponding to above-mentioned first curve slope 731 is positioned at filling out
The bottom of material 72, it is therefore an objective in order to be more than close to the thrust of the filler 72 of sealed end away from sealed end.As shown in figure 4,
The maximum position of the thrust of filler 72 is smaller, and close to sealing liquid regional seal end good sealing effect, in turn ensure that valve rod 3
Activity performance.
The charging hole 712 of bonding pad 72 is additionally provided with above-mentioned upper bush 71, charging hole 712 is axially arranged.
It is described above to make the preferred embodiment of the present invention, this hair is not departed from for the person of ordinary skill of the art
On the premise of bright principle, some variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (1)
- A kind of 1. valve rod sealing device, it is characterised in that：Filler including being enclosed on sleeve (7) on the outside of valve rod, sealed valve stem (72), for compressing the casting die (73) and hold-down mechanism (8) of filler；The sleeve (7) include upper bush (71) and lower sleeve ( 74 )；Filler (72) and casting die (73) are respectively positioned between upper bush (71) and lower sleeve (74), and filler (72) is close to the valve Bar (3), casting die (73) inside portion are against filler (72) periphery, and casting die (73) outside portion is provided with the first curve slope (731), trapped Cylinder (74) is provided with the second curve slope coordinated with the casting die (73) outside portion；The hold-down mechanism (8) is to be used to incite somebody to action The pressing device that the upper bush (71) and lower sleeve (74) axially press；When hold-down mechanism (8) compresses, pass through the first arc Drive the casting die (73) radial compaction filler (72) in inclined-plane (731)；The hold-down mechanism (8) includes upper bush (71) radial convex The first flange (711) for going out, second flange (741) of lower sleeve (74) radially protruding and multiple it is used to fasten the first flange (711) and the second flange (741) fastener；Each fastener includes binding nut (81) and screw rod (80), and first Flange (711) is provided with the through hole that diameter is more than screw rod (80), and the second flange (741) corresponding to through hole is provided with and the screw rod (80) screwed hole of matching, screw rod lower end is threaded on the second flange (741) by screwed hole；Binding nut (81) is screwed in Through screw rod (80) top of through hole, and on screw rod (80) part between the first flange (711) and binding nut (81) It is nested with compression spring (82)；The casting die (73) is an open loop, or is made up of multiple arcuate members for surrounding ring；The upper set The charging hole (712) of bonding pad (72) is additionally provided with cylinder (71), charging hole (712) is axially arranged, and charging hole topping-up mouth opens up In outer battery limit (BL) domain side.
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 CN105318096A (en) | 2016-02-10 |
| CN105318096B true 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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US455636A (en) * | 1891-07-07 | Charles j |
-
2015
- 2015-12-09 CN CN201510900587.6A patent/CN105318096B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| CN105318096A (en) | 2016-02-10 |
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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 |
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 |
|
| PC01 | Cancellation 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 | ||
| 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 |