CN106813010A - A kind of new back seal butterfly valve - Google Patents
A kind of new back seal butterfly valve Download PDFInfo
- Publication number
- CN106813010A CN106813010A CN201710115030.0A CN201710115030A CN106813010A CN 106813010 A CN106813010 A CN 106813010A CN 201710115030 A CN201710115030 A CN 201710115030A CN 106813010 A CN106813010 A CN 106813010A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- fan
- conical surface
- hole
- 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
- 239000000945 filler Substances 0.000 claims abstract description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16K41/14—Spindle sealings with conical flange on the spindle which co-operates with a conical surface in the housing
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of new back seal butterfly valve.Including valve body, lower valve rod and butterfly plate, the lower valve rod is fixedly connected with the butterfly plate being built in valve body, valve body upper end is provided with support, pedestal upper end is provided with retainer, the worm and gear of mutual cooperation is provided with retainer, mid-stent is provided with cavity, the upper valve rod through its upper and lower ends is provided with support, upper valve worm and wheel is connected, upper valve rod lower end is connected with lower valve rod upper end, pedestal lower end is provided with through hole, filler is provided between upper valve rod and through hole upper end inwall, described filler upper end is provided with the gland in cavity, shoulder hole is provided with the through hole of pedestal lower end, the conical surface is provided with step in shoulder hole, the lower end of upper valve rod is provided with the taper platform being engaged with the conical surface, the bottom surface of retainer is provided with fan-shaped gradient step, worm gear lower surface is provided with the scalloped bevel being engaged with fan-shaped gradient step.Simple structure of the present invention, effectively prevents the particle in medium from penetrating into, and protects valve rod and filler, improves valve rod and filler service life.
Description
Technical field
The present invention relates to a kind of butterfly valve, more particularly to a kind of new back seal butterfly valve.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve of simple structure, can be used for the switch control of low pressure pipeline medium
Butterfly valve refers to closure member（Flap or butterfly plate）It is disk, a kind of valve of open and close is reached around valve shaft rotation, valve can
For controlling all kinds such as empty gas and water, steam, various Korrosionsmediums, mud, oil product, liquid metal and radiating medium
The flowing of fluid.It is main on pipeline to play cut-out and throttling action.Butterfly valve opening and closing element is a discoidal butterfly plate, in valve body
Rotated around the axis of its own, so as to reach the purpose for opening and closing or adjusting.In the butterfly valve design being currently known, valve rod and valve body
And the design between filler is substantially matching design, the cooperation between valve body and filler and valve rod exist it is either large or small between
Gap, then some media be granular occasion, especially when the smallest particles size of medium is than valve rod and valve body and filler
Between gap hour, particle is easy for being permeated from gap, so that particle is piled up on valve rod, the time is long, and particle packing is tight
Weight, can wear and tear valve rod and filler when valve rod is rotated, and reduce the service life of valve rod and filler.
The content of the invention
For drawbacks described above, it is an object of the invention to provide a kind of simple structure, effectively prevent the particle in medium from oozing
Enter, protect valve rod and filler, improve a kind of new back seal butterfly valve of valve rod and filler service life.
For this technical solution adopted in the present invention is：
Including valve body, lower valve rod and butterfly plate, the lower valve rod is fixedly connected with the butterfly plate being built in valve body, the valve body upper end
Support is provided with, the pedestal upper end is provided with retainer, the worm and gear of mutual cooperation is provided with the retainer, in the support
Portion is provided with cavity, and the upper valve rod through its upper and lower ends, the upper valve worm and wheel connection, the upper valve are provided with the support
Bar lower end is connected with lower valve rod upper end, and the pedestal lower end is provided with through hole, is provided between the upper valve rod and through hole upper end inwall
Filler, described filler upper end is provided with the gland in cavity, and shoulder hole is provided with the through hole of the pedestal lower end, described
The conical surface is provided with step in shoulder hole, the lower end of the upper valve rod is provided with the taper platform being engaged with the conical surface, the cone of taper platform
Face forms conical surface seal pair with the conical surface at step, and the bottom surface of the retainer is provided with fan-shaped gradient step, the worm gear lower end
Face is provided with the scalloped bevel being engaged with fan-shaped gradient step.
Used as the further improvement of above-mentioned technical proposal, the lower end of the upper valve rod passes through adapter sleeve with the upper end of lower valve rod
Connection.
Used as the further improvement of above-mentioned technical proposal, the frustoconical bevel angle at step in the shoulder hole is 45 degree.
Used as the further improvement of above-mentioned technical proposal, the radian of the fan-shaped gradient step is 90 degree, the fan-shaped slope
The quantity for spending step is two, and two fan-shaped gradient steps are distributed in 180 degree.
Used as the further improvement of above-mentioned technical proposal, the worm screw is connected with manual driving device.
It is an advantage of the invention that：
Simple structure of the present invention, when worm and gear runs, worm gear drives upper valve rod to move up, the taper platform of upper valve rod lower end
The conical surface fitted with the conical surface at step in pedestal lower end shoulder hole, form conical surface seal pair, effectively prevent small in medium
Particle enters between valve rod and filler, improves the service life of valve rod and filler.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of support.
Fig. 3 is the top view of Fig. 2.
1 it is valve body in figure, 2 be lower valve rod, 3 be butterfly plate, 4 be support, 5 be retainer, 6 be worm gear, 7 be worm screw, 8 is empty
Chamber, 9 be upper valve rod, 10 be through hole, 11 be filler, 12 be shoulder hole, 13 be the conical surface, 14 be taper platform, 15 be fan-shaped gradient platform
Rank, 16 be adapter sleeve, 17 be manual driving device.
Specific embodiment
A kind of new back seal butterfly valve, including valve body 1, lower valve rod 2 and butterfly plate 3, the lower valve rod 2 be built in valve body 1
Interior butterfly plate 3 is fixedly connected, and the upper end of the valve body 1 is provided with support 4, and the upper end of the support 4 is provided with retainer 5, the retainer 5
Inside be provided with the worm screw 7 of worm gear 6 of mutual cooperation, the middle part of the support 4 be provided with cavity 8, the support 4 be provided with through its upper and lower two
The upper valve rod 9 at end, the upper valve rod 9 is connected with worm gear 6, and the lower end of the upper valve rod 9 is connected with the upper end of lower valve rod 2, the support 4
Lower end is provided with through hole 10, and filler 11 is provided between the upper valve rod 9 and the upper end inwall of through hole 10, and the upper end of described filler 11 is provided with position
In the gland 11 in cavity 8, the through hole 10 of the lower end of the support 4 is interior to be provided with shoulder hole 12, the platform in the shoulder hole 12
Be provided with the conical surface 13 at rank, the lower end of the upper valve rod 9 is provided with the taper platform 14 being engaged with the conical surface 13, the conical surface of taper platform 14 with
The conical surface at step forms conical surface seal pair, and the bottom surface of the retainer 5 is provided with fan-shaped gradient step 15, the lower end of the worm gear 6
Face is provided with the scalloped bevel being engaged with fan-shaped gradient step 15.
Used as the further improvement of above-mentioned technical proposal, the lower end of the upper valve rod 9 is with the upper end of lower valve rod 2 by being connected
Set 16 is connected.
Used as the further improvement of above-mentioned technical proposal, the frustoconical bevel angle at step in the shoulder hole 12 is 45 degree.
Used as the further improvement of above-mentioned technical proposal, the radian of the fan-shaped gradient step 15 is 90 degree, the sector
The quantity of gradient step 15 is two, and two fan-shaped gradient steps 15 are distributed in 180 degree.
Used as the further improvement of above-mentioned technical proposal, the worm screw 7 is connected with manual driving device 17.
When worm screw 7 drives worm gear 6 to rotate, the scalloped bevel of the lower surface of worm gear 6 along the bottom surface of retainer 5 fan-shaped gradient step
15 rise, so as to drive upper valve rod 9 to rise, upper valve rod 9 drives the conical surface and the lower end shoulder hole 12 of support 4 of the taper platform 14 of lower end
Conical surface laminating at interior step, forms conical surface seal pair, effectively prevents molecule from entering between valve rod and filler, improves valve
The service life of bar and filler.
Claims (5)
1. a kind of new back seal butterfly valve, it is characterised in that including valve body, lower valve rod and butterfly plate, the lower valve rod be built in
Butterfly plate in valve body is fixedly connected, and the valve body upper end is provided with support, and the pedestal upper end is provided with retainer, in the retainer
The worm and gear of mutual cooperation is provided with, the mid-stent is provided with cavity, is provided with through the upper of its upper and lower ends in the support
Valve rod, the upper valve worm and wheel connection, the upper valve rod lower end is connected with lower valve rod upper end, and the pedestal lower end is provided with logical
Hole, is provided with filler between the upper valve rod and through hole upper end inwall, described filler upper end is provided with the gland in cavity,
Shoulder hole is provided with the through hole of the pedestal lower end, the conical surface, the lower end of the upper valve rod are provided with the step in the shoulder hole
The taper platform being engaged with the conical surface is provided with, the conical surface and the conical surface at step of taper platform form conical surface seal pair, the retainer
Bottom surface be provided with fan-shaped gradient step, the worm gear lower surface is provided with the scalloped bevel being engaged with fan-shaped gradient step.
2. a kind of new back seal butterfly valve according to claim 1, it is characterised in that the lower end of the upper valve rod and lower valve
The upper end of bar is connected by adapter sleeve.
3. a kind of new back seal butterfly valve according to claim 1, it is characterised in that at the step in the shoulder hole
Frustoconical bevel angle is 45 degree.
4. a kind of new back seal butterfly valve according to claim 1, it is characterised in that the radian of the fan-shaped gradient step
It it is 90 degree, the quantity of the fan-shaped gradient step is two, and two fan-shaped gradient steps are distributed in 180 degree.
5. a kind of new back seal butterfly valve according to claim 1, it is characterised in that the worm screw is connected with manual actuation
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710115030.0A CN106813010A (en) | 2017-02-28 | 2017-02-28 | A kind of new back seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710115030.0A CN106813010A (en) | 2017-02-28 | 2017-02-28 | A kind of new back seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106813010A true CN106813010A (en) | 2017-06-09 |
Family
ID=59114479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710115030.0A Pending CN106813010A (en) | 2017-02-28 | 2017-02-28 | A kind of new back seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106813010A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609635A1 (en) * | 1976-03-09 | 1977-09-15 | Buettner J G Fa | FITTING WITH REAR SEAL |
| US5407176A (en) * | 1993-08-12 | 1995-04-18 | Nevrekar; Venkatesh R. | Back-seating of rotary valve stem |
| GB9612978D0 (en) * | 1995-06-24 | 1996-08-21 | Seaboard Lloyd Ltd | External valve stem back seat |
| CN101004225A (en) * | 2007-01-09 | 2007-07-25 | 永嘉县一达阀门有限公司 | Wedge type bidirectional sealed high temperature butterfly valve |
| CN201462041U (en) * | 2009-07-23 | 2010-05-12 | 上海上冶阀门制造有限公司 | Heat transfer oil ball valve |
| CN202580275U (en) * | 2012-05-18 | 2012-12-05 | 苏州纽威阀门股份有限公司 | Valve rod back seal structure for ultralow-temperature valve |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN203363397U (en) * | 2013-07-08 | 2013-12-25 | 浙江瓯明流体铸业有限公司 | Inversely-arranged sealing mechanism for high-platform middle part of butterfly valve stem |
| CN203686178U (en) * | 2013-10-24 | 2014-07-02 | 科福龙阀门集团有限公司 | Reversed sealing device for fixed-stroke valve stem |
| CN205207745U (en) * | 2015-11-28 | 2016-05-04 | 宁波会德丰铜业有限公司 | Floating ball valve |
| CN206513940U (en) * | 2017-02-28 | 2017-09-22 | 络科实业集团有限公司 | A kind of new back seal butterfly valve |
-
2017
- 2017-02-28 CN CN201710115030.0A patent/CN106813010A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609635A1 (en) * | 1976-03-09 | 1977-09-15 | Buettner J G Fa | FITTING WITH REAR SEAL |
| US5407176A (en) * | 1993-08-12 | 1995-04-18 | Nevrekar; Venkatesh R. | Back-seating of rotary valve stem |
| GB9612978D0 (en) * | 1995-06-24 | 1996-08-21 | Seaboard Lloyd Ltd | External valve stem back seat |
| CN101004225A (en) * | 2007-01-09 | 2007-07-25 | 永嘉县一达阀门有限公司 | Wedge type bidirectional sealed high temperature butterfly valve |
| CN201462041U (en) * | 2009-07-23 | 2010-05-12 | 上海上冶阀门制造有限公司 | Heat transfer oil ball valve |
| CN202580275U (en) * | 2012-05-18 | 2012-12-05 | 苏州纽威阀门股份有限公司 | Valve rod back seal structure for ultralow-temperature valve |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN203363397U (en) * | 2013-07-08 | 2013-12-25 | 浙江瓯明流体铸业有限公司 | Inversely-arranged sealing mechanism for high-platform middle part of butterfly valve stem |
| CN203686178U (en) * | 2013-10-24 | 2014-07-02 | 科福龙阀门集团有限公司 | Reversed sealing device for fixed-stroke valve stem |
| CN205207745U (en) * | 2015-11-28 | 2016-05-04 | 宁波会德丰铜业有限公司 | Floating ball valve |
| CN206513940U (en) * | 2017-02-28 | 2017-09-22 | 络科实业集团有限公司 | A kind of new back seal butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |
Application publication date: 20170609 |
|
| RJ01 | Rejection of invention patent application after publication |