CN101865295A - Shaft-end positioning structure of butterfly valve transmission shaft - Google Patents
Shaft-end positioning structure of butterfly valve transmission shaft Download PDFInfo
- Publication number
- CN101865295A CN101865295A CN 201010206822 CN201010206822A CN101865295A CN 101865295 A CN101865295 A CN 101865295A CN 201010206822 CN201010206822 CN 201010206822 CN 201010206822 A CN201010206822 A CN 201010206822A CN 101865295 A CN101865295 A CN 101865295A
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- transmission shaft
- shaft
- bearing
- valve body
- valve
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Abstract
The invention relates to a shaft-end positioning mechanism of a butterfly valve transmission shaft, comprising a valve body, a transmission shaft and a bottom flange cover. The transmission shaft is arranged in a shaft hole of the valve body, and the bottom flange cover is positioned at the shaft end of the transmission shaft and is fixedly connected to the valve body. The shaft-end positioning mechanism of the butterfly valve transmission shaft is characterized in that a counter bore is arranged at the bottom of the valve body corresponding to the shaft end of the transmission shaft, the shaft end of the transmission shaft is provided with a clamping groove, a bearing is arranged in the clamping groove, and one end surface of the bearing presses against a stage surface of the counter bore while the other end surface and a semicircular ring arranged in the clamping groove of the transmission shaft form axial positioning. A bearing cushion is arranged between the bearing and the stage surface of the counter bore of the valve body. The invention has the advantages of having reliable positioning structure, easy implementation and convenient maintenance and can effectively reduce the phenomenon of stucking of the valve action and the like, ensure the stable performance of the valve, guarantee the safe and stable operation of an apparatus device and improve the production efficiency.
Description
Technical field
The present invention relates to be applied to the machinery valve of industries such as oil, chemical industry, electric power, metallurgy, specifically a kind of shaft-end positioning structure of butterfly valve transmission shaft.
Background technique
Continuous development along with domestic control valve technology, rotation class control valve has become one of industrial control process main flow control apparatus, in the process control to the requirement of the reliability of rotary valve also in continuous raising, this just has higher requirement to reliability, the stability of rotation class control valve.
In the prior art, it is thin-walled parts that stop collar structure, stop collar are generally adopted in the axle head of butterfly valve transmission shaft location, difficulty of processing is big, the difficult control of dimensional accuracy, yielding, assembling inconvenience, change difficulty, under some more abominable operating modes, cover is easily killed with axle, thereby causes valve invalidation, even cause commercial plant that production accidents such as parking take place, cause enormous economic loss.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art part, a kind of shaft-end positioning structure of butterfly valve transmission shaft is provided, this position structure is reliable and stable, is convenient to maintenance, changes quick-wear part.
According to technological scheme provided by the invention, a kind of shaft-end positioning structure of butterfly valve transmission shaft, comprise valve body, transmission shaft and end blind flange, transmission shaft is installed in the interior axis hole of valve body, end blind flange is positioned at the axial end of transmission shaft and is fixedly connected on valve body, feature is: be provided with counterbore with the corresponding valve body of the axle head of described transmission shaft bottom, the axle head of described transmission shaft is provided with draw-in groove, bearing is installed in the draw-in groove, an end face of bearing is resisted against on the step surface of described counterbore, and the semicircular ring in its another end face and the draw-in groove that is installed in described transmission shaft becomes axially locating.
Be provided with bearing gasket between the counterbore step surface of described bearing and described valve body.
The inboard of blind flange of the described end is provided with interior step surface, and interior step surface contacts with the Transverse plane of described transmission shaft.
Compared with the prior art the present invention has the following advantages:
1, the formation multilayer is spacing between valve body counterbore step surface, bearing gasket, bearing, semicircular ring and end blind flange, and the location is reliable, is convenient to maintenance;
2, bearing, bearing gasket, semicircular ring part all adopt high-strength material, and surface hardening is handled, and wear-resisting property is good, long service life;
3, step surface machining accuracy height in bearing, bearing gasket, semicircular ring plane and the end blind flange, it is good to contact rotating plane degree of finish, and frictional force is little;
4, bearing, bearing gasket, semicircular ring cylindrical, endoporus control quality of fit require lowly, do not embody radially position-limiting action, and many places all can turn round flexibly, are difficult for stuck;
5, this structure easy removal, part is easily changed, and is easy to maintenance.
Description of drawings
Fig. 1 is for using the structural representation of butterfly valve of the present invention;
Fig. 2 is the A place enlarged view among Fig. 1.
Embodiment
The present invention is further illustrated below in conjunction with the embodiment in the accompanying drawing.
As shown in Figure 1 and Figure 2, comprise valve body 1, bearing gasket 2, bearing 3, semicircular ring 4, transmission shaft 5, end blind flange 6, bolt 7, valve plate 8, locating stud 9, counterbore 10, draw-in groove 11, step surface 12, interior step surface 13 etc.
As shown in Figure 1 and Figure 2, the present invention is a kind of shaft-end positioning structure of butterfly valve transmission shaft, comprise valve body 1, transmission shaft 5 and end blind flange 6, transmission shaft 5 is installed in the axis hole in the valve body 1, and end blind flange 6 is positioned at the axial end of transmission shaft 5 and is fixedly connected on valve body 1 by bolt 7.Improvements of the present invention are: be provided with counterbore 10 with the corresponding valve body 1 of the axle head of transmission shaft 5, the axle head of transmission shaft 5 is provided with draw-in groove 11, bearing 3 is installed on the transmission shaft 5, an end face of bearing 3 is resisted against on the step surface 12 of counterbore 10, and its another end face is by semicircular ring 4 axially locating in the draw-in groove 11 that is installed in transmission shaft 5.
Between the step surface 12 of bearing 3 and counterbore 10, can also be provided with bearing gasket 2.
The inboard of end blind flange 6 is provided with interior step surface 13, and interior step surface 13 contacts with the Transverse plane of transmission shaft 5.
Installation process of the present invention is as follows: after the transmission shaft 5 of valve plate 8 is packed valve body 1 into, bearing gasket 2, bearing 3 are packed into by valve body 1 bottom, the cylindrical of bearing gasket 2, bearing 3 cooperates with valve body 1 counterbore 10, the endoporus of bearing gasket 2, bearing 3 cooperates with the cylindrical of transmission shaft 5, then semicircular ring 4 is snapped in the draw-in groove 11 of transmission shaft 5, at last blind flange 6 usefulness bolts 7 in the end are pressed on the end flange of valve body 1.
Among the present invention, inner bearing pad 2 is installed on the step surface 12 of valve body 1 bottom counterbore 10, and is spacing with step surface 12 formation first layers; Bearing 3 is installed in bearing gasket 2 and snaps between the interior semicircular ring 4 of transmission shaft 5 draw-in grooves, and with the effect of bearing gasket 2 formation plane bearings, it is spacing to form the second layer; Between semicircular ring 4 and the bearing 3 plane form the 3rd layer spacing, restriction transmission shaft 5 is play upwards; Blind flange 6 usefulness bolts 7 in the end are fixed and clamped on valve body 1 flange, and step surfaces 13 contact with transmission shaft 5 Transverse planes in the end blind flange 6, form the 4th layer spacing, limit transmission shaft 5 and move downward.The surface of bearing gasket 2, bearing 3, semicircular ring 4 is through cure process (as the hard chromium plating polishing), each spacing interplanar hardness, bright and clean height, frictional force is little, the many places revolution, be difficult for stuckly, in the working life of effectively having improved bounding means, maintenance cost is low, by controlling the dimensional accuracy of each part thickness direction, play positioning action.Inner bearing pad 2, bearing 3, semicircular ring 4 plane that contacts produces rotation motion under the driving of transmission shaft 5, guaranteed that valve event links up not block time.
Position structure of the present invention is reliable easily to be realized, is convenient to maintenance, can effectively reduce phenomenons such as valve event is stuck, guarantees the stable performance of valve, guarantees that apparatus moves safely and smoothly, enhances productivity.
The present invention adopts bearing gasket 2, bearing 3, semicircular ring 4, end blind flange 6 to realize the axial limiting of transmission shaft 5, and again because of valve plate 8 and transmission shaft 5 link into an integrated entity by locating stud 9, thereby the present invention has also realized limit function to valve plate 8.
The present invention is when changing fragile part, simply, quick and easy, need not other component in the whole deck valve body of dismounting, only need unclamp bolt 7, dismantle the blind flange 6 of going to the bottom, transmission shaft 5 is pulled out suitable length, take out the semicircular ring 4 in the draw-in groove 11 on the transmission shaft 5, with regard to quick-wear parts such as replaceable type bearing pad 2, bearing 3 and semicircular ring 4, time saving and energy saving.
Claims (3)
1. the shaft-end positioning structure of a butterfly valve transmission shaft, comprise valve body (1), transmission shaft (5) and end blind flange (6), transmission shaft (5) is installed in the interior axis hole of valve body (1), end blind flange (6) is positioned at the axial end of transmission shaft (5) and is fixedly connected on valve body (1), it is characterized in that: be provided with counterbore (10) with the corresponding valve body of axle head (1) of described transmission shaft (5), the axle head of described transmission shaft (5) is provided with draw-in groove (11), (11) are equipped with bearing (3) in the described draw-in groove, an end face of bearing (3) is resisted against on the step surface (12) of described counterbore (10), and the semicircular ring (4) in its another end face and the draw-in groove that is installed in described transmission shaft (5) (11) becomes axially locating.
2. the shaft-end positioning structure of butterfly valve transmission shaft as claimed in claim 1 is characterized in that being provided with bearing gasket (2) between the step surface (12) of counterbore (10) of described bearing (3) and described valve body.
3. the shaft-end positioning structure of butterfly valve transmission shaft as claimed in claim 1 is characterized in that the inboard of blind flange of the described end (6) is provided with interior step surface (13), and interior step surface (13) contacts with the Transverse plane of described transmission shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206822 CN101865295A (en) | 2010-06-13 | 2010-06-13 | Shaft-end positioning structure of butterfly valve transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206822 CN101865295A (en) | 2010-06-13 | 2010-06-13 | Shaft-end positioning structure of butterfly valve transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865295A true CN101865295A (en) | 2010-10-20 |
Family
ID=42957131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010206822 Pending CN101865295A (en) | 2010-06-13 | 2010-06-13 | Shaft-end positioning structure of butterfly valve transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863822A (en) * | 2016-03-24 | 2016-08-17 | 中国北方发动机研究所(天津) | Anti-blocking positioning bypass structure |
| CN109826964A (en) * | 2019-03-14 | 2019-05-31 | 江苏神通阀门股份有限公司 | A kind of axial limit structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170327Y (en) * | 2007-10-11 | 2008-12-24 | 胡建田 | Double flow direction hard-sealing high-temperature high-voltage ball butterfly valve |
| CN101545540A (en) * | 2008-03-26 | 2009-09-30 | 上海埃维玛阀门有限公司 | Double eccentric butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN201844033U (en) * | 2010-06-13 | 2011-05-25 | 无锡智能自控工程有限公司 | Shaft end positioning structure for transmission shaft of butterfly valve |
-
2010
- 2010-06-13 CN CN 201010206822 patent/CN101865295A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170327Y (en) * | 2007-10-11 | 2008-12-24 | 胡建田 | Double flow direction hard-sealing high-temperature high-voltage ball butterfly valve |
| CN101545540A (en) * | 2008-03-26 | 2009-09-30 | 上海埃维玛阀门有限公司 | Double eccentric butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN201844033U (en) * | 2010-06-13 | 2011-05-25 | 无锡智能自控工程有限公司 | Shaft end positioning structure for transmission shaft of butterfly valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863822A (en) * | 2016-03-24 | 2016-08-17 | 中国北方发动机研究所(天津) | Anti-blocking positioning bypass structure |
| CN105863822B (en) * | 2016-03-24 | 2018-04-06 | 中国北方发动机研究所(天津) | A kind of positioning by-pass structure of anti-clamping stagnation |
| CN109826964A (en) * | 2019-03-14 | 2019-05-31 | 江苏神通阀门股份有限公司 | A kind of axial limit structure |
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Open date: 20101020 |