CN205064868U - Dual drive zero friction butterfly valve sealed firmly - Google Patents
Dual drive zero friction butterfly valve sealed firmly Download PDFInfo
- Publication number
- CN205064868U CN205064868U CN201520864093.2U CN201520864093U CN205064868U CN 205064868 U CN205064868 U CN 205064868U CN 201520864093 U CN201520864093 U CN 201520864093U CN 205064868 U CN205064868 U CN 205064868U
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- valve rod
- valve
- butterfly
- peripheral surface
- cam
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Abstract
The utility model discloses a dual drive zero friction butterfly valve sealed firmly, this butterfly valve include valve body, valve rod, butterfly plate and drive arrangement, drive arrangement include hand wheel and handle, its characterized in that the valve rod is provided with the the central axis coincidence of circular ring shaped structure's upper valve rod cover and lower valve rod cover, handle and valve rod outward to be connected with the valve rod interference, the bolt is connected with the upper valve rod cover for the hand wheel, and transmitting torque gives upper and lower valve rod cover, upper and lower valve rod cover is equipped with upper and lower sleeve, upper and lower cam with the parallel key respectively admittedly, the valve rod is connected with the connecting rod, and the valve rod is in the same place with the butterfly plate welding, become 180 degrees angles departments with the parallel key in circumference on the outer periphery of valve rod and open and have a periphery face, on the inner peripheral surface of connecting rod, be provided with the inner peripheral surface hole the same with periphery face diameter, the assembly back, the periphery face is put correspondingly with the inner peripheral surface hole site, the downthehole spring that is equipped with of inner peripheral surface, this spring initial condition is incomplete compression state, and the compression force is less than fluid medium's impact force.
Description
Technical field
The utility model relates to a kind of butterfly valve, especially a kind of have Dual Drive without friction hard-sealing butterfly valve.
Background technique
Hard seal butterfly valve has the simple and open-close convenient advantage rapidly of structure, is thus widely used in the switch control rule of low pressure pipeline medium.Due to the reason of structure in prior art, seal pressure between sealing pair immobilizes, when valve plate opens and closes, always friction is there is between sealing pair, the moment of opening/shutting valve is increased, and keying speed slows down, and opens and closes frequently and easily causes sealing surface wear, sealability declines, and finally causes valve leak.Claimant solves this problem preferably in first patent " a kind of non-abrasion hard-sealing butterfly valve " (ZL200710150352.5): its valve seat is can make along valve interior wall the moving valve base that moves axially, between valve seat exterior edge face and valve body lateral body, spring is installed, interior edge face is connected with valve rod by push rod, on, there is cylindrical roller lower push-rod one end, valve rod is equipped with curvilinear groove up and down, when valve rod moves upward, roller slides along curvilinear groove, push rod promotes valve seat and moves, sealing surface is thrown off, open and close moment greatly to reduce, avoid the wearing and tearing between butterfly plate and the sealing pair of valve seat, then valve rod rotates, butterfly plate is driven to rotate opened butterfly valve.Although this without wearing and tearing butterfly valve decrease wearing and tearing, to pressure medium off-load greatly, still have following shortcoming: 1. structure and manufacturing process more complicated, cost is higher; 2. described in, valve rod is provided with curvilinear groove, and the intensity that valve rod can bear reduces; 3. sealed cover ratio pressure is even not.
Model utility content
For the deficiencies in the prior art, the technical problem that the utility model quasi-solution is determined is: provide a kind of Dual Drive without friction hard-sealing butterfly valve, this butterfly valve is ability Open valve under positive stream mode only, and during closedown, seal pressure is even, effectively can improve the sealability of butterfly valve.
The utility model design Dual Drive without friction hard-sealing butterfly valve (hereinafter referred to as butterfly valve, see Fig. 1-5), comprise valve body, valve rod, butterfly plate and drive unit thereof, described drive unit comprises handwheel and handle two-part, it is characterized in that described valve rod is outside equipped with upper valve rod cover and the lower valve rod cover of circular ring, the central axes of handle and valve rod, and be connected with valve rod interference, handwheel to overlap with upper valve rod with bolt and is connected, and transmitting torque gives upper and lower valve stem casing; Described upper and lower valve stem casing is fixed with upper bush and lower sleeve, overhead cam and lower cam with flat key respectively; Be connected with connecting rod by flat key in the middle part of valve rod, valve rod and butterfly plate weld together; The outer peripheral surface of described valve rod becomes 180 degree of angles place with flat key in the circumference and have a periphery face, on the inner peripheral surface of connecting rod, be provided with the inner circumferential face identical with outer circumferential face bore dia, after assembling, periphery face on valve rod is corresponding with the inner peripheral surface hole site on connecting rod, is provided with spring in inner circumferential face; The original state of this spring is incomplete compressive state, and the compressive force of spring-compressed state is less than the impact force of flowing medium; The shaft axis of described valve rod departs from the existence of butterfly plate center, is single eccentric structure.
Compared with prior art, the beneficial effect of the utility model butterfly valve is:
1. life.The utility model butterfly valve is by the control of two driving mechanisms, and sealing surface is thrown off in advance, and butterfly plate rotarily opens butterfly valve, realizes butterfly valve and opens and closes without friction; The disengagement of sealing surface makes pressure medium obtain off-load, reduces the operation moment of torsion of valve when opening and closing, so flowing medium reduces the opening impact effect of butterfly plate, thus brings up to hundreds of thousands by current several thousand times the working life of butterfly valve.
2. good airproof performance.The utility model butterfly valve is provided with upper and lower cam in the middle part of valve rod, and under butterfly valve closed condition, the face profile of upper and lower cam compresses butterfly plate always, provides a mechanical wedging power to butterfly plate, can ensure the tight seal continued, and improves sealability.
3. structure is simple.The structure of the utility model butterfly valve is for other nothing friction butterfly valves, and structure is simpler, enhances the reliability of butterfly valve, manufacturing than being easier to, reducing costs.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic front view of the utility model Dual Drive without a kind of embodiment of friction hard-sealing butterfly valve;
Fig. 2 is that the utility model Dual Drive is without the A-A cross-sectional view in Fig. 1 of a kind of embodiment of friction hard-sealing butterfly valve;
Fig. 3 is the full section structural representation handwheel 90-degree rotation after of the utility model Dual Drive without a kind of embodiment of friction hard-sealing butterfly valve;
Fig. 4 is local (I place in Fig. 2) the structure for amplifying schematic diagram of the utility model Dual Drive without a kind of embodiment of friction hard-sealing butterfly valve;
Fig. 5 is local (II place in Fig. 5) the structure for amplifying schematic diagram of the utility model Dual Drive without a kind of embodiment of friction hard-sealing butterfly valve.
Embodiment
Describe the utility model further below in conjunction with embodiment and accompanying drawing thereof, but it does not limit the protection domain of the application's claim.
The utility model design Dual Drive without friction hard-sealing butterfly valve (hereinafter referred to as butterfly valve, see Fig. 1-5), mainly include valve body 10, valve rod 15, butterfly plate 16 and drive unit thereof, it is characterized in that described drive unit comprises handwheel 7 and handle 6 two-part, handwheel 7 overlaps 9 with bolt and upper valve rod and is connected, the central axes of handle 6 and valve rod 15, and be connected with valve rod 15 interference; Described valve rod 15 is outside equipped with upper valve rod cover 9 and lower valve rod cover 9 ', and it is circular ring, and described upper valve rod cover 9 and lower valve rod cover 9 ' are installed with upper bush 3 and lower sleeve 3 ', overhead cam 11 and lower cam 11 ' respectively; Described upper bush 3 and be separately installed with Upper shaft sleeve 1 and Lower shaft sleeve 1 ' between lower sleeve 3 ' and valve body 10, the shape of Upper shaft sleeve 1 and Lower shaft sleeve 1 ' one end is circular shape.
The outer peripheral surface of described valve rod 15 becomes 180 degree of angles place with flat key in the circumference and have a periphery face, on the inner peripheral surface of connecting rod 5, be provided with the inner circumferential face identical with outer circumferential face bore dia, after assembling, periphery face on valve rod 15 is corresponding with the inner peripheral surface hole site on connecting rod 5, is provided with a spring 12 (see Fig. 4) in inner circumferential face; The original state of this spring 12 is incomplete compressive state, and the compressive force of spring-compressed state is less than the impact force of flowing medium; The shaft axis of described valve rod 15 departs from the existence of butterfly plate center, is single eccentric structure.
Handle 6 described in the utility model butterfly valve and upper valve rod are provided with valve stem sleeve 21 between overlapping 9, and valve stem sleeve 21 has the effect of axially locating, and valve rod 15 can be protected from wearing and tearing; Handwheel 7 and upper valve rod overlap 9 and to be connected with bolt and to tighten together, rotation hand wheel 6 Direct driver upper valve rod cover 9 motion; Also be provided with Gland axle sleeve 22 between handwheel 7 and Gland 8, Gland axle sleeve 22 is for axially locating.The top of described upper valve rod cover 9 is provided with and is enclosed in Packing seat outside upper valve rod cover 9 and asbestos packing and is provided with the Gland 8 be pressed on filler, and Gland 8 hex head bolt is fastened on (see Fig. 2) on valve body 10.
In the utility model butterfly valve, in order to ensure the reliability of butterfly valve action, the upper and lower of valve rod 15 is provided with symmetrical Upper shaft sleeve 1 and Lower shaft sleeve 1 ', upper bush 3 and lower sleeve 3 ' and overhead cam 11 and lower cam 11 '.Described valve rod 15 is outside equipped with upper valve rod cover 9 and lower valve rod cover 9 ', and it is circular ring; Described upper valve rod cover 9 and lower valve rod cover 9 ' are installed with upper bush 3 and lower sleeve 3 ', overhead cam 11 and lower cam 11 ' with flat key respectively.One end of described upper bush 3 and lower sleeve 3 ' is plane, is fastened on upper bush 3 and lower sleeve 3 ' with screw 2 by the two ends up and down of link 4, and the synchronized movement of upper valve rod cover 9 is overlapped 9 ' to lower valve rod by link 4; Described overhead cam 11 and the respective a part of contoured surface of lower cam 11 ' are plane, and when butterfly valve cuts out, overhead cam 11 is parallel with lower cam 11 ' mutual plane, compress butterfly plate 16; When butterfly valve is opened, overhead cam 11 and lower cam 11 ' 90-degree rotation, its face profile unclamps the butterfly plate 16 of compression.Described upper bush 3 and be separately installed with Upper shaft sleeve 1 and Lower shaft sleeve 1 ' between lower sleeve 3 ' and valve body 10, it is characterized in that Upper shaft sleeve 1 with Lower shaft sleeve 1 ' in order to same valve interior wall agrees with mutually, be set to special construction, namely axle sleeve one end is arc-shaped (see Fig. 1).
Be connected (see Fig. 4) with connecting rod 5 by flat key 17 in the middle part of described valve rod 15, valve rod 15 and butterfly plate 16 weld together.Described spring 12, original state is incomplete compressive state, the impact force of flowing medium is greater than the compressive force of spring 12, the compression displacement of spring 12 under the impact force of medium equals the displacement of butterfly plate 16 and connecting rod 5, achieve the translation of butterfly plate 16, and butterfly valve is when opening, the elastic force of spring 12 can be resisted butterfly plate 16 and produce under the impact force of medium and rock, and ensure that the reliability of mechanism.
The flange of described valve body 10, valve seat and valve body itself are all cast and are formed, such design makes processing simple and cost reduces, and hold facile time in actual production, described lower valve rod cover 9 ' bottom is provided with the asbestos packing being enclosed in valve rod 15 outside, and being provided with the axle sleeve 13 be pressed in above filler, valve body 10 bolt and the end cap 14 closed link together.
Dual Drive described in the utility model butterfly valve and upper and lower valve stem casing have unique structure, the driving of handwheel 7 directly drives upper valve rod to overlap 9 and lower valve rod cover 9 ', upper valve rod cover 9 and lower valve rod cover 9 ' transmitting torque are to cam, the impact force of flowing medium makes a bit of displacement of the translation of butterfly valve (see Fig. 5), and off-load.Handle with sleeve 6 again, valve rod 15 is consistent with the motion of handle 6, and butterfly valve opened by valve rod 15 slewing maneuver connecting rod 5.Drive upper and lower valve stem casing and valve rod to make butterfly valve really achieve the action of " translation+rotation " respectively, achieve the nothing friction opening and closing of butterfly valve, greatly reduce the keying moment of butterfly valve, improve the working life of butterfly valve.
The utility model butterfly valve is after handwheel 7 90-degree rotation, media impingement power makes a bit of displacement of butterfly plate 16 translation (see Fig. 5), further feature is that the inner headed face of described valve seat insert 10 and butterfly plate seal ring 18 all adopt the conical surface, butterfly plate seal ring 18 is fastening with screw 19 on trim ring 20, under worst hot case multilayer sealing ring screw 19 fastening under be still one overall.Oblique cone seal ring entirety intermetallic composite coating, resiliently deformable is less than asbestos slate pad, and main driving mechanism anti-torque thrust and the medium thrust leaned on seals, and this method can realize higher machining accuracy.
The utility model butterfly valve has single eccentric structure (see Fig. 2,3).This single eccentric structure refers to that the shaft axis of described valve rod 15 exists certain distance with butterfly plate center, and this distance is called axial bias, forms single eccentric structure of butterfly valve.
Working principle and the process of the utility model butterfly valve are: when butterfly valve is opened, pioneer starts wheel 7 and rotates clockwise, upper valve rod cover 9 is driven to rotate, the sleeve 3 and 3 ' that moves through of upper valve rod cover 9 is synchronized to lower valve rod cover 9 ' with link 4, thus on, lower valve rod cover rotates simultaneously, handwheel 7 rotates 90 degree, on, lower valve rod overlaps cam 11 and 11 ' the also 90-degree rotation connected, therefore cam 11 and 11 ' unclamps the compression to butterfly plate 16, the impact force of flowing medium makes the sealing surface of butterfly valve (i.e. the sealing surface of valve seat insert 10 and butterfly plate seal ring 18 composition) be separated from a bit of distance, the pressure of valve body 10 inner chamber unloads greatly, then driving handle 6 rotates clockwise, thus valve rod 15 drivening rod 5 and butterfly plate 16 are rotating 90 degree without under friction condition, butterfly valve is opened completely.When butterfly valve cuts out, handle 6 is with ovable valve stem 15 to rotate counterclockwise 90 degree, butterfly plate 16 and connecting rod 5 rotate 90 degree under the drive of valve rod 15, in closed condition, then rotate counterclockwise handwheel 7, upper and lower valve stem casing is rotated counterclockwise thereupon, cam 11 and 11 ' is rotated counterclockwise, presses to valve seat insert 10 by parallel for butterfly plate seal ring 18, until butterfly plate 16 compresses valve body and valve seat 10, sealing surface seals completely, and butterfly valve cuts out.
Above-described embodiment should not be considered as restriction of the present utility model, but any unsubstantiality done based on embodiment of the present utility model improves, all should within the protection domain of the utility model claim.
The utility model is not addressed part and is applicable to prior art.
Claims (3)
1. a Dual Drive is without friction hard-sealing butterfly valve, this butterfly valve comprises valve body, valve rod, butterfly plate and drive unit thereof, described drive unit comprises handwheel and handle two-part, it is characterized in that described valve rod is outside equipped with upper valve rod cover and the lower valve rod cover of circular ring, the central axes of handle and valve rod, and be connected with valve rod interference, handwheel to overlap with upper valve rod with bolt and is connected, and transmitting torque gives upper and lower valve stem casing; Described upper and lower valve stem casing is fixed with upper bush and lower sleeve, overhead cam and lower cam with flat key respectively; Be connected with connecting rod by flat key in the middle part of valve rod, valve rod and butterfly plate weld together; The outer peripheral surface of described valve rod becomes 180 degree of angles place with flat key in the circumference and have a periphery face, on the inner peripheral surface of connecting rod, be provided with the inner circumferential face identical with outer circumferential face bore dia, after assembling, periphery face on valve rod is corresponding with the inner peripheral surface hole site on connecting rod, is provided with spring in inner circumferential face; The original state of this spring is incomplete compressive state, and the compressive force of spring-compressed state is less than the impact force of flowing medium; The shaft axis of described valve rod departs from the existence of butterfly plate center, is single eccentric structure.
2. Dual Drive according to claim 1 is without friction hard-sealing butterfly valve, its feature is plane in one end of described upper bush and lower sleeve, with screw, link is fastened on upper bush and lower sleeve, the synchronized movement that upper valve rod overlaps is passed to lower valve rod cover by link, upper bush and be separately installed with Upper shaft sleeve and Lower shaft sleeve between lower sleeve and valve body, and one end that Upper shaft sleeve and Lower shaft sleeve are designed to agree with valve body is the structure of arc-shaped.
3. Dual Drive according to claim 1 is without friction hard-sealing butterfly valve, and it is characterized in that described overhead cam and lower cam some profile equal are plane, when butterfly valve cuts out, the face profile of overhead cam and lower cam compresses butterfly plate; When butterfly valve is opened, two plane rotating Vortexes 90 degree of overhead cam and lower cam, unclamp the butterfly plate of compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864093.2U CN205064868U (en) | 2015-10-31 | 2015-10-31 | Dual drive zero friction butterfly valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864093.2U CN205064868U (en) | 2015-10-31 | 2015-10-31 | Dual drive zero friction butterfly valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064868U true CN205064868U (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520864093.2U Withdrawn - After Issue CN205064868U (en) | 2015-10-31 | 2015-10-31 | Dual drive zero friction butterfly valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064868U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240545A (en) * | 2015-10-31 | 2016-01-13 | 河北工业大学 | Dual-drive friction-free hard-seal butterfly valve |
| CN111465792A (en) * | 2017-12-28 | 2020-07-28 | 株式会社三国 | Valve device |
-
2015
- 2015-10-31 CN CN201520864093.2U patent/CN205064868U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240545A (en) * | 2015-10-31 | 2016-01-13 | 河北工业大学 | Dual-drive friction-free hard-seal butterfly valve |
| CN105240545B (en) * | 2015-10-31 | 2017-07-28 | 河北工业大学 | A kind of dual drive is without friction hard-sealing butterfly valve |
| CN111465792A (en) * | 2017-12-28 | 2020-07-28 | 株式会社三国 | Valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160302 Effective date of abandoning: 20170728 |