CN204420148U - Butterfly valve spring bolt structure - Google Patents
Butterfly valve spring bolt structure Download PDFInfo
- Publication number
- CN204420148U CN204420148U CN201420847171.3U CN201420847171U CN204420148U CN 204420148 U CN204420148 U CN 204420148U CN 201420847171 U CN201420847171 U CN 201420847171U CN 204420148 U CN204420148 U CN 204420148U
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- China
- Prior art keywords
- pin
- fixing
- spool
- spring bolt
- butterfly valve
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Abstract
The utility model provides a kind of butterfly valve spring bolt structure, comprise spool, be arranged on the valve shaft in spool, the through hole of radial through spool and valve shaft, be arranged on the fixing pin in through hole, described fixing pin comprises shank and pin neck, and described shank and pin neck are round platform, and the tapering of described pin neck is greater than shank; Black box is filled with in gap between described pin neck and through hole; Described black box comprises expansion set and gland, described gland upper, described expansion set under; The fixing-assembly of fixing seal assembly and fixing pin is arranged at described black box top.Adopting by coordinating the pin neck and expansion set that tapering is larger, realizing the effect of sealing and locking.By adopting method expansion set increasing gland to realize double seal, reduce difficulty of processing and processing cost simultaneously.
Description
Technical field
The utility model relates to a kind of butterfly valve spring bolt structure, belongs to butterfly valve spring bolt technical field.
Background technique
The applying date is on June 29th, 2011, and the Chinese utility model patent of application publication number CN102242811A discloses a kind of expansion sleeve taper pin butterfly valve.Comprise valve shaft, valve plate and valve body, valve shaft is divided into driving valve shaft and lower valve shaft, and the bindiny mechanism between upper driving valve shaft and valve plate is taper pin and expansion set bolt.This patent office divides and solves sealing problem, but still there is the problem of tightness deficiency.
Model utility content
For above-mentioned existing problem, the purpose of this utility model is to provide a kind of good airproof performance, easy for installation, butterfly valve spring bolt structure with low cost.
For reaching above-mentioned technique effect, technical solution adopted in the utility model is: a kind of butterfly valve spring bolt structure, comprise spool, be arranged on the valve shaft in spool, the through hole of radial through spool and valve shaft, be arranged on the fixing pin in through hole, described fixing pin comprises shank and pin neck, described shank and pin neck are round platform, and the tapering of described pin neck is greater than shank; Black box is filled with in gap between described pin neck and through hole; Described black box comprises expansion set and gland, described gland upper, described expansion set under; The fixing-assembly of fixing seal assembly and fixing pin is arranged at described black box top.
Further, the tapering of described expansion set and described pin cervical vertebra degree adaptation, described expansion set is in energy intumescent filler gap after fixing-assembly is fastening.
Further, the tapering of described pin neck is 1:20 ~ 1:9.
Further, the tapering of described pin neck is 1:10.
Further, described fixing-assembly comprises pin and emits and acorn nut, has and emit adaptive internal thread with pin in described acorn nut; Described pin emits the top at pin neck, is positioned at outside spool, and described pin emits and has outside thread.
Further, the lower surface of described acorn nut and the upper surface flush of spool.
Further, the upper surface of described gland and the pin upper surface of neck and the upper surface flush of spool.
Further, described gland is annular seal ring.
Further, described gland and expansion set are rubber.
Further, the tapering of described shank is 1:50.
The beneficial effects of the utility model are: adopting by coordinating the pin neck and expansion set that tapering is larger, realizing the effect of sealing and locking.By adopting method expansion set increasing gland to realize double seal, reduce difficulty of processing and processing cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of butterfly valve spring bolt of the utility model structure;
Wherein: 1, spool, 2, valve shaft, 3, fixing pin, 31, pin emits, 32, pin neck, 33, shank, 4, black box, 41, expansion set, 42, gland, 5, fixing-assembly, 51, acorn nut.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model provides a kind of butterfly valve spring bolt structure, and comprise in spool 1, spool 1 axis hole had on axial direction, axis hole is built with the valve shaft 2 of adaptation.Spool 1 and valve shaft 2 have through radial through hole, and described through hole is higher than the seam of valve shaft 2 with spool 1.Described through hole is by boring after valve shaft 2 being loaded spool 1, fraising.
Be provided with the fixing pin 3 of fixing valve shaft 2 and spool 1 in through hole, fixing pin 3 comprises pin from top to bottom successively and emits 31, pin neck 32, shank 33.Pin emits 31 on the top of pin, and after fixing pin 3 is fit into through hole, pin emits 31 to be exposed at outside spool 1, and bottom surface flushes with spool 1 outer surface.Pin emits on 31 and has outside thread, can match, by screw-in screwing hermetic assembly 4 and the fixing pin 3 of acorn nut 51 with the internal thread of acorn nut 51.Pin emit 31 and acorn nut 51 with the use of the fixing-assembly 5 constituting lock sealing assembly 4.
Pin emits the bottom of 31 to be the round table-like pin necks 32 having certain taper, and the tapering of pin neck 32 is preferably 1:20 ~ 1:9, and optimum is 1:10.When the tapering of pin neck 32 is 1:10, fixing pin 3 can coordinate the sealing effect realizing the best with black box 4, can not affect other performances again simultaneously.Pin neck 32 is positioned at through hole, and sell neck 32 and be filled with the black box 4 coordinated with it in the gap between through hole, black box 4 comprises expansion set 41 and gland 42.Expansion set 41 and gland 42 all adopt deformable material, are preferably rubber.The cross section of expansion set 41 is the wedge shape that tapering can be suitable with pin neck 32, and gland 42 is annular seal ring.By in the gap of pressure energy intumescent filler between pin neck 32 and through hole after expansion set 41 loads, realize the sealing of pin and through hole by the embedding of expansion set 41 and expanding and locking is fixed.Gland 42 is positioned at the top of expansion set 41, the axial pressure that top acorn nut 51 applies can be transmitted on expansion set 41 by gland 42, press seal pin in the axial direction after expansion set 41 is expanded.Gland 42 self produces radial deformation by this axial pressure, realizes the sealing to fixing pin 3 and through hole in radial directions, thus reaches the effect of double seal.Described black box 4 is by the design of split, and for the different seal request of diverse location, design adopts different parts, combinationally uses and reaches best sealing effect, and this split design can also reduce difficulty of processing and processing cost greatly.
The bottom of pin neck 32 is round table-like shank 33, and shank 33 is the little centrum of taper ratio cone neck, preferably 1:50.The diameter at shank top is identical with pin neck base diameter, and the aspect ratio pin neck 32 of shank 33 is high, the fixation that shank 33 is main.
During installation, first valve shaft 2 is put in spool 1 axis hole, with spool 1 seam crossing, spool 1 and valve shaft 2 are bored a through hole exceeding valve shaft 2, then load fixing pin 3 after fraising, respectively expansion set 41, gland 42 are packed into fixing pin 3.Gland 42 is pressed on expansion set 41, and acorn nut 51 is spun on fixing pin 3 pin and emits the screw thread place of 31 and be pressed on gland 42, by the screw-in of acorn nut 51, allows gland 42 move in axial generation and makes expansion set 41 distending, reach the effect of locking, sealing.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model.All within spirit of the present utility model and principle; any amendment of making, equivalent replacement, improvement etc.; such as pin is emitted 31 and the fixing-assembly 5 that forms of acorn nut 51 replace to independent fixing bolt, fixed cover etc., within the scope that all should be included in the utility model protection.
Claims (9)
1. a butterfly valve spring bolt structure, comprise spool, be arranged on the valve shaft in spool, the through hole of radial through spool and valve shaft, be arranged on the fixing pin in through hole, it is characterized in that, described fixing pin comprises shank and pin neck, described shank and pin neck are round platform, and the tapering of described pin neck is greater than shank; Black box is filled with in the gap of described pin neck and through hole; Described black box comprises expansion set and gland, described gland upper, described expansion set under; The fixing-assembly of fixing seal assembly and fixing pin is arranged at described black box top.
2. butterfly valve spring bolt structure according to claim 1, is characterized in that, the tapering of described expansion set and described pin cervical vertebra degree adaptation, and described expansion set is in energy intumescent filler gap after fixing-assembly is fastening.
3. butterfly valve spring bolt structure according to claim 1, is characterized in that, the tapering of described pin neck is 1:20 ~ 1:9.
4. butterfly valve spring bolt structure according to claim 1, is characterized in that, the tapering of described pin neck is 1:10.
5. butterfly valve spring bolt structure according to claim 1, is characterized in that, the tapering of described shank is 1:50.
6. butterfly valve spring bolt structure according to claim 1, is characterized in that, described fixing-assembly comprises pin and emits and acorn nut; Described pin emits the top at pin neck, is a part for described fixing pin; After described fixing pin is fit into through hole, pin emits and is positioned at outside spool; The internal thread emitting surperficial outside thread adaptation with pin is had in described acorn nut.
7. butterfly valve spring bolt structure according to claim 6, is characterized in that, the upper surface of described gland and the pin upper surface of neck and the upper surface flush of spool; The lower surface of described acorn nut and the upper surface flush of spool.
8. butterfly valve spring bolt structure according to claim 1, is characterized in that, described gland is annular seal ring.
9. butterfly valve spring bolt structure according to claim 1, is characterized in that, described gland and expansion set are rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847171.3U CN204420148U (en) | 2014-12-29 | 2014-12-29 | Butterfly valve spring bolt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847171.3U CN204420148U (en) | 2014-12-29 | 2014-12-29 | Butterfly valve spring bolt structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204420148U true CN204420148U (en) | 2015-06-24 |
Family
ID=53470519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420847171.3U Active CN204420148U (en) | 2014-12-29 | 2014-12-29 | Butterfly valve spring bolt structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204420148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817936A (en) * | 2018-07-12 | 2018-11-16 | 上海卫星装备研究所 | A kind of satellite load repetition installation accuracy ensuring method |
| CN113932020A (en) * | 2021-10-22 | 2022-01-14 | 宁波一机阀门制造有限公司 | Butterfly valve with clearance self-compensating function |
-
2014
- 2014-12-29 CN CN201420847171.3U patent/CN204420148U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817936A (en) * | 2018-07-12 | 2018-11-16 | 上海卫星装备研究所 | A kind of satellite load repetition installation accuracy ensuring method |
| CN113932020A (en) * | 2021-10-22 | 2022-01-14 | 宁波一机阀门制造有限公司 | Butterfly valve with clearance self-compensating function |
| CN113932020B (en) * | 2021-10-22 | 2023-01-24 | 宁波一机阀门制造有限公司 | Butterfly valve with clearance self-compensating function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |