CN205678144U - A kind of large-diameter butterfly valve - Google Patents
A kind of large-diameter butterfly valve Download PDFInfo
- Publication number
- CN205678144U CN205678144U CN201620634158.9U CN201620634158U CN205678144U CN 205678144 U CN205678144 U CN 205678144U CN 201620634158 U CN201620634158 U CN 201620634158U CN 205678144 U CN205678144 U CN 205678144U
- Authority
- CN
- China
- Prior art keywords
- valve shaft
- annular
- ring
- shaft seat
- locating ring
- 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.)
- Expired - Fee Related
Links
Landscapes
- Lift Valve (AREA)
Abstract
A kind of large-diameter butterfly valve, there is butterfly plate on valve shaft in valve body, there is sealing pair between butterfly plate and valve body, the hypomere of valve shaft is in lower valve shaft seat, lower valve shaft seat has valve shaft axial direction positioning device, axial direction positioning device has the annular steps in lower valve shaft seat nozzle, valve shaft has groove circumferentially, groove is embedded with the annular locating ring being combined by two semicircular ring, under above-mentioned annular locating ring, the excircle of anchor ring has annular step, the round ring boss that the above annular bench floor having with annular locating ring of end cap matches, there is annular seal pad between described annular bench floor and round ring boss.During making, as long as processing the annular steps in the groove of valve shaft and lower valve shaft seat nozzle exactly by the requirement of design size, process valve shaft groove and locating ring by the width of valve shaft groove and the thickness of locating ring exactly, when assembling, only end cap need to be compressed and be arranged on lower valve shaft seat cylinder bottom surface, valve shaft not play in the case of by axial force can be ensured.
Description
Technical field
The utility model relates to a kind of large-diameter butterfly valve, the valve shaft axial direction positioning device of particularly a kind of large-diameter butterfly valve.
Background technology
Generally the butterfly valve that latus rectum is more than 500 millimeters is called large-diameter butterfly valve.Large-diameter butterfly valve has cylinder valve, valve
The upper and lower both sides of body circumference have relative cylindrical shape upper and lower valve shaft seat respectively, are installed with valve shaft, in valve body in upper and lower valve shaft seat
Having butterfly plate on valve shaft, having sealing pair between butterfly plate and valve body, the hypomere of valve shaft is in lower valve shaft seat.
Large-diameter butterfly valve is to stand to be arranged on pipeline use.After installation, valve shaft can be produced by the gravity of butterfly plate and valve shaft
Downward axial thrust, during use, the pressure of pipeline internal medium can produce axial thrust upwards to valve shaft.Valve shaft is axial
Position greatly affects the cooperation of large-diameter butterfly valve sealing pair, in order to make large-diameter butterfly valve sealing pair have good cooperation, greatly
Bore butterfly valve lower valve shaft seat has valve shaft axial direction positioning device, it is ensured that valve shaft not play in the case of by axial force.
In prior art, the valve shaft axial direction positioning device of large-diameter butterfly valve has the annular steps in lower valve shaft seat nozzle,
Valve shaft has, in the annular steps one section of lower valve shaft seat, the groove circumferentially matching with annular steps, and groove is embedded with by two
The cross section that semicircular ring combines is the annular locating ring of rectangle, the annular steps internal diameter of the external diameter of locating ring and lower valve shaft seat
Matching, the internal diameter of locating ring matches with the external diameter of valve shaft hypomere groove bottom land, is connected with end cap in the cylinder bottom surface of lower valve shaft seat,
There is spacer between end cap and the lower surface of valve shaft.During use, annular steps in lower valve shaft seat nozzle and locating ring can in case
Only valve shaft upwards play, spacer and end cap are possible to prevent the downward play of valve shaft.
This valve shaft axial direction positioning device can realize that the valve shaft to large-diameter butterfly valve positions, but is assembling large-diameter butterfly valve
When, if spacer is slightly thin, it is impossible to ensure the downward play of valve shaft, if spacer is slightly thick, the open and close torque of valve can be increased.By
Relatively big to the positioning effects of valve shaft, when assembling large-diameter butterfly valve in spacer thickness, it is sometimes desirable to adjust from thickness to thin repeatedly processing
The thickness of joint pad, makes the making of valve shaft axial direction positioning device and assembles pretty troublesome, and setting accuracy is not very high.
Content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, proposing making and the dress of a kind of valve shaft axial direction positioning device
Join very convenient, the large-diameter butterfly valve of registration.
The utility model realizes with the following method.
Large-diameter butterfly valve has cylinder valve, and the upper and lower both sides of valve body circumference have the upper and lower valve shaft of relative cylindrical shape respectively
Seat, is installed with valve shaft in upper and lower valve shaft seat, the valve shaft in valve body has butterfly plate, have sealing pair, under valve shaft between butterfly plate and valve body
Section is in lower valve shaft seat, and lower valve shaft seat has valve shaft axial direction positioning device, and valve shaft axial direction positioning device has in lower valve shaft seat nozzle
Annular steps, valve shaft has the groove circumferentially matching with annular steps, groove in the annular steps one section of lower valve shaft seat
It is embedded with the annular locating ring being combined by two semicircular ring, the annular steps internal diameter of the external diameter of locating ring and lower valve shaft seat
Matching, the internal diameter of locating ring matches with the external diameter of valve shaft hypomere groove bottom land, and the cylinder bottom surface of lower valve shaft seat is connected with end cap, on
The excircle stating anchor ring under annular locating ring has annular step.The above annular platform having with annular locating ring of end cap
The round ring boss matching in rank bottom surface, has annular seal pad between described annular bench floor and round ring boss.
The lower ring of the annular locating ring being combined by two semicircular ring in the utility model valve shaft axial direction positioning device
Face excircle has annular step, the annular that the above annular bench floor having with annular locating ring of end cap matches
Boss, has sealing gasket between described annular bench floor and round ring boss.During making, if accurate by the requirement of design size
Really process the annular steps in the groove of valve shaft and lower valve shaft seat nozzle, by the thickness of the width of valve shaft groove and locating ring
Process valve shaft groove and locating ring exactly, when assembling, only end cap need to be compressed the cylinder bottom surface being arranged on lower valve shaft seat, i.e.
Can ensure that compression locating ring and sealing gasket, after mounting, both can ensure valve shaft flexible rotating, can guarantee that again valve shaft by axially
Not play in the case of power, makes the making of valve shaft axial direction positioning device and assembling easily, and setting accuracy is higher.
Below in conjunction with the accompanying drawings, the utility model is further described.
Brief description
Fig. 1 is the schematic front view of a kind of large-diameter butterfly valve proposing according to scheme of the invention of the present utility model.
Fig. 2 is enlarged diagram at the I of Fig. 1；
Fig. 3 is the axially fractionation schematic diagram of Fig. 2；
Fig. 4 is the elevational schematic view of locating ring in Fig. 3.
Detailed description of the invention
In Fig. 1 ~ Fig. 4, large-diameter butterfly valve has cylinder valve 1, and the upper and lower both sides of valve body circumference have relative cylinder respectively
Shape upper and lower valve shaft seat the 2nd, 3, is installed with valve shaft 4 in upper and lower valve shaft seat, the valve shaft in valve body has butterfly plate 5, between butterfly plate and valve body
Having sealing pair 6, the hypomere of valve shaft is in lower valve shaft seat, and lower valve shaft seat has valve shaft axial direction positioning device 7, valve shaft axial direction positioning device
Having the annular steps 8 in lower valve shaft seat nozzle, valve shaft has in the annular steps one section of lower valve shaft seat and matches with annular steps
Groove 9 circumferentially, groove is embedded with the annular locating ring being combined by two semicircular ring 10-11, outside locating ring
The annular steps diameter compatible of footpath and lower valve shaft seat closes, and the internal diameter of locating ring matches with the external diameter of valve shaft hypomere groove bottom land,
The cylinder bottom surface of lower valve shaft seat is connected with end cap 12, and under above-mentioned annular locating ring, the excircle of anchor ring has annular step 13, end cap
The round ring boss 15 that matches of the above annular bench floor 14 having with locating ring, described annular bench floor and circle
There is annular seal pad 16 between annular boss.
Claims (1)
1. a large-diameter butterfly valve, has cylinder valve, and the upper and lower both sides of valve body circumference have relative cylindrical shape upper and lower respectively
Valve shaft seat, is installed with valve shaft in upper and lower valve shaft seat, the valve shaft in valve body has butterfly plate, have sealing pair, valve shaft between butterfly plate and valve body
Hypomere in lower valve shaft seat, lower valve shaft seat has valve shaft axial direction positioning device, and valve shaft axial direction positioning device has at lower valve shaft seat cylinder
Annular steps in Kou, valve shaft has, in the annular steps one section of lower valve shaft seat, the groove circumferentially matching with annular steps,
Groove is embedded with the annular locating ring being combined by two semicircular ring, the annular steps of the external diameter of locating ring and lower valve shaft seat
Diameter compatible closes, and the internal diameter of locating ring matches with the external diameter of valve shaft hypomere groove bottom land, and the cylinder bottom surface of lower valve shaft seat is connected with end
Lid, it is characterised in that:
Under above-mentioned annular locating ring, the excircle of anchor ring has annular step, the above circle having with annular locating ring of end cap
The round ring boss matching in ring-shaped step bottom surface, has annular seal between described annular bench floor and round ring boss
Pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620634158.9U CN205678144U (en) | 2016-06-24 | 2016-06-24 | A kind of large-diameter butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620634158.9U CN205678144U (en) | 2016-06-24 | 2016-06-24 | A kind of large-diameter butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205678144U true CN205678144U (en) | 2016-11-09 |
Family
ID=57429510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620634158.9U Expired - Fee Related CN205678144U (en) | 2016-06-24 | 2016-06-24 | A kind of large-diameter butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205678144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135680A (en) * | 2018-04-04 | 2022-03-04 | 株式会社鹭宫制作所 | Electric valve |
-
2016
- 2016-06-24 CN CN201620634158.9U patent/CN205678144U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135680A (en) * | 2018-04-04 | 2022-03-04 | 株式会社鹭宫制作所 | Electric valve |
| CN114135680B (en) * | 2018-04-04 | 2024-05-03 | 株式会社鹭宫制作所 | Electric valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107654692A (en) | A kind of ball valve | |
| CN205678144U (en) | A kind of large-diameter butterfly valve | |
| CN106872170B (en) | Magnitude of interference for bearing installation simulates fixture | |
| CN203686178U (en) | Reversed sealing device for fixed-stroke valve stem | |
| CN106439211B (en) | Valve rod assembly on electronic expansion valve | |
| CN207195694U (en) | A kind of novel cutoff valve | |
| CN203516758U (en) | Spring-type sleeve double-base regulating valve | |
| CN107763241A (en) | The universal automatic compensation valve seat side valve cap-type valve of Bidirectional pressure | |
| CN201059368Y (en) | Dual-channel sealing eccentric hemisphere valve | |
| CN207539366U (en) | A kind of ball valve | |
| CN204459161U (en) | A kind of hot water pump mechanical seal structure | |
| CN204783408U (en) | Fuel injector connecting device | |
| CN201193503Y (en) | Spring balance type kelly plug valve | |
| CN207034322U (en) | A kind of corrosion-resistant valve body of butterfly valve | |
| CN203516884U (en) | Regulating valve with high erosion resistance | |
| CN207093825U (en) | A kind of flanged ball valve structure | |
| CN206918302U (en) | Flange connects spiral valve | |
| CN207229783U (en) | A kind of three-eccentric-butterfly-valve sealing ring and a kind of three-eccentric-butterfly-valve | |
| CN205173516U (en) | Butterfly valve | |
| CN205745410U (en) | Full welding smithwelding ball valve | |
| CN206830866U (en) | A kind of diaphragm valve with diaphragm seal structure | |
| CN106640823A (en) | Spring type hydraulic pulse valve and use method thereof | |
| CN206221123U (en) | For the guide frame that fuel injector armature shaft is oriented to | |
| CN205315706U (en) | Ward off mechanical seal device for glass reactor | |
| CN203963101U (en) | A kind of full welding hard seal ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20180624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |