CN203703183U - Butterfly valve with valve rod fixed by use of combination of taper pin and flat key - Google Patents
Butterfly valve with valve rod fixed by use of combination of taper pin and flat key Download PDFInfo
- Publication number
- CN203703183U CN203703183U CN201420077905.4U CN201420077905U CN203703183U CN 203703183 U CN203703183 U CN 203703183U CN 201420077905 U CN201420077905 U CN 201420077905U CN 203703183 U CN203703183 U CN 203703183U
- Authority
- CN
- China
- Prior art keywords
- taper pin
- valve
- butterfly plate
- butterfly
- flat key
- 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 - Lifetime
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Abstract
The utility model provides a butterfly valve with a valve rod fixed by use of combination of a taper pin and a flat key and aims at solving the problems of easy loosening, dropping and breakage of a pin shaft, inconvenient dismounting and difficult maintenance of the existing butterfly valve due to that a butterfly plate is connected with a valve shaft only by use of a single pin shaft. The butterfly valve with the valve rod fixed by use of combination of the taper pin and the flat key is characterized in that a butterfly plate (2) is connected with a valve shaft (1) by use of the flat key (7), and also the butterfly plate (2) is connected with the valve shaft (1) by use of the taper pin (3) of which the small end is provided with external threads, the threaded part of the taper pin (3) passes through holes formed in the butterfly plate (2) and the valve shaft (1) and is connected with a flat gasket (4), a spring washer (5) and a nut (6), and fixed by virtue of spot welding, and the tapered sealing surface of the taper pin (3) is in close fit with the holes formed in the butterfly plate (2) and the valve shaft (1).
Description
technical field:
The utility model is relevant with butterfly valve, especially relevant with soft sealing butterfly valve with cities and towns water drainage-supply system.
background technique:
Existing water drainage-supply system butterfly valve, butterfly plate is connected with the single dependence bearing pin of valve shaft, the easy loose or dislocation of bearing pin and easy-rupturing, inconvenience dismounting, difficult in maintenance.Only have the tapered end of bearing pin and the conical seat drive fit of butterfly plate one side, easily leak the cooperation place of bearing pin and valve shaft.
model utility content:
The purpose of this utility model is to provide a kind of easy to assembly, and good seal performance connects reliably, difficult drop-off, and the taper pin of being convenient to demolition and maintenance adds the butterfly valve of the fixing valve rod of flat key combination.
The utility model is achieved in that
Butterfly plate 2 is connected by flat key 7 with valve shaft 1, butterfly plate 2 is connected with valve shaft 1 by the externally threaded taper pin 3 of small end band, the helical thread portion of taper pin 3 is connected with plain cushion 4, bullet pad 5 and nut 6 with the hole on valve shaft 1 through butterfly plate 2, and spot welding is fixed, hole drive fit on the conical seal (contact) face of taper pin 3 and butterfly plate 2 and valve shaft 1, the tapering of taper pin 3 is 50: 1.
The utility model taper pin adds the butterfly valve of the fixing valve rod of flat key combination, butterfly plate 2 is realized first with valve shaft 1 by flat key 7 and is connected, butterfly plate 2 is realized second by the externally threaded taper pin 3 of small end band with valve shaft 1 and is connected, the helical thread portion of taper pin 3 is connected with plain cushion 4, bullet pad 5 and nut 6 with the hole on valve shaft 1 through butterfly plate 2, and spot welding is fixed.
The utility model has the following advantages:
One, between taper pin and valve shaft, butterfly plate 2, sealing is reliable, and the taper ratio of taper pin adopts the tapering of the 50:1 with self-locking performance, and taper pin small end, from threaded, uses nut fixing and locking, and spot welding fixes, and has greatly improved the reliability that taper pin connects, good seal performance.
Two, valve shaft and butterfly plate have taper pin and are connected with flat key is dual, even if taper pin breaks down, still can effectively connect by flat key, have improved valve rod and drive the reliability of butterfly plate transmission.
Three, taper pin convenient disassembly, can be easily by dismounting and change maintenances such as valve shaft, butterfly plate, seal rings.
brief description of the drawings:
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
embodiment:
Butterfly plate 2 is realized dual being connected with valve shaft 1 by taper pin 3 and flat key 7.Taper pin 3 carries conical seal (contact) face, and the tapering of taper pin 3 is 50: 1.When valve complete shut-down, can prevent that medium from passing through to leak in taper pin-hole.Taper pin 3 small ends carry outside thread, and add plain cushion 4 and bullet pad 5, and screw thread is locked by nut 6, and spot welding is fixed.Butterfly plate 2 respectively has a flat key groove with valve shaft 1, by flat key 7, butterfly plate 2 is connected with valve shaft 1.In the time of need maintenance valve shaft 1 or butterfly plate 2, remove spot welding point, back off nut 6 and plain cushion 4, bullet pad 5, take out taper pin 3, and take out flat key 7, can pull down valve shaft 1 and butterfly plate 2.
Valve body 8 left and right end faces of the present utility model have the adpting flange at same axis, and valve can adopt bolt and nut to be connected with pipeline.
Claims (1)
1. taper pin adds the butterfly valve of the fixing valve rod of flat key combination, it is characterized in that butterfly plate (2) is connected by flat key (7) with valve shaft (1), butterfly plate (2) is connected with valve shaft (1) by the externally threaded taper pin of small end band (3), the helical thread portion of taper pin (3) is connected with plain cushion (4), bullet pad (5) and nut (6) with the hole on valve shaft (1) through butterfly plate (2), and spot welding is fixed, hole drive fit on the conical seal (contact) face of taper pin (3) and butterfly plate (2) and valve shaft (1), the tapering of taper pin (3) is 50: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077905.4U CN203703183U (en) | 2014-02-24 | 2014-02-24 | Butterfly valve with valve rod fixed by use of combination of taper pin and flat key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077905.4U CN203703183U (en) | 2014-02-24 | 2014-02-24 | Butterfly valve with valve rod fixed by use of combination of taper pin and flat key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703183U true CN203703183U (en) | 2014-07-09 |
Family
ID=51053628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077905.4U Expired - Lifetime CN203703183U (en) | 2014-02-24 | 2014-02-24 | Butterfly valve with valve rod fixed by use of combination of taper pin and flat key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN110594423A (en) * | 2019-09-23 | 2019-12-20 | 天津祥嘉流体控制系统有限公司 | Structure for positioning valve rod and butterfly plate of butterfly valve |
-
2014
- 2014-02-24 CN CN201420077905.4U patent/CN203703183U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN110594423A (en) * | 2019-09-23 | 2019-12-20 | 天津祥嘉流体控制系统有限公司 | Structure for positioning valve rod and butterfly plate of butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU CHUANLI INTELLIGENT FLUID EQUIPMENT CO., L Free format text: FORMER NAME: CHENGDU CHUANLI INTELLIGENT LIQUID CONTROL EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611530, No. seven, enterprise road, Qionglai Industrial Development Zone, Chengdu, Sichuan Patentee after: CHENGDU CHUANLI SMART FLUID EQUIPMENT CO.,LTD. Address before: 611530, No. seven, enterprise road, Qionglai Industrial Development Zone, Chengdu, Sichuan Patentee before: CHENGDU CHUANLI INTELLIGENT FLUID CONTROL EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |