CN203248751U - Anti-leakage butterfly valve - Google Patents
Anti-leakage butterfly valve Download PDFInfo
- Publication number
- CN203248751U CN203248751U CN 201320264634 CN201320264634U CN203248751U CN 203248751 U CN203248751 U CN 203248751U CN 201320264634 CN201320264634 CN 201320264634 CN 201320264634 U CN201320264634 U CN 201320264634U CN 203248751 U CN203248751 U CN 203248751U
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- China
- Prior art keywords
- valve shaft
- valve
- butterfly
- lower valve
- butterfly plate
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- 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
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Abstract
The utility model discloses an anti-leakage butterfly valve which comprises a valve body. A valve seat internally provided with a fluid flow passage is arranged in the valve body, a butterfly plate is arranged in the fluid flow passage, a valve shaft linked with the butterfly plate is arranged on the butterfly plate, the valve shaft is symmetrically arranged in the radial direction of the butterfly plate, the valve shaft comprises an upper valve shaft body and a lower valve shaft body, the upper valve shaft body and the lower valve shaft body are coaxially arranged, an upper valve shaft hole and a lower valve shaft hole are respectively formed in the valve body, an inner wall step groove is formed in the inner lateral wall of the upper valve shaft hole, an inner wall step is arranged on one side, close to the fluid flow passage, of the inner wall step groove, a shaft sleeve is arranged inside the inner wall step, the valve shaft is sleeved with the shaft sleeve, the shaft sleeve abuts against the inner wall step, an annular groove is formed in the lateral wall of the butterfly plate in the peripheral direction where the butterfly plate is located, a lower valve shaft fluid flow passage is arranged in the lower valve shaft body, the annular groove is communicated with the lower valve shaft fluid flow passage, and the lower valve shaft fluid flow passage is connected to a leakage detecting pipe. The anti-leakage butterfly valve is provided with the annular groove, the leakage detecting pipe is arranged outside the valve body, convenience is brought to monitoring, and a lining is arranged to enable the valve shaft to flexibly rotate.
Description
Technical field
The utility model relates to a kind of butterfly valve, is specifically related to a kind of anti-leakage butterfly valve.
Background technique
Butterfly valve claims again Flap valve, is the comparatively simple valve of a kind of structure commonly used, and butterfly valve can be used for cutting out and opening of pipeline fluid passage.Butterfly valve generally comprises valve body and valve seat, is located at a discoidal butterfly plate on the valve seat, and butterfly plate can be around the axis rotation of himself in valve body, regulates the control purpose thereby reach closure or openness etc.Butterfly valve is simple in structure, lightweight because of it, unlatching is convenient laborsaving because be widely used in the industrial fields such as oil, coal gas, chemical industry, water treatment rapidly.
Existing butterfly valve be easy to leak, and owing to leak the inside that occurs in butterfly valve body, people is not easy to find the leakage situation of butterfly valve, can not accomplish timely maintenance when long-term the use.
Summary of the invention
The purpose of this utility model is: for the deficiencies in the prior art, the utility model provides a kind of anti-leakage butterfly valve of opening flexibly, can in time detecting the leakage situation.
To achieve these goals, the utility model has adopted following technological scheme:
A kind of anti-leakage butterfly valve, comprise valve body, be provided with valve seat in the described valve body, be provided with the fluid passage in the described valve seat, be provided with butterfly plate in the described fluid passage, described butterfly plate is provided with the valve shaft with the butterfly plate interlock, described valve shaft arranges along the butterfly plate radial symmetric, described valve shaft comprises upper valve shaft and the lower valve shaft of coaxial setting, described upper valve shaft and lower valve shaft are separately positioned on the both sides of butterfly plate, be respectively equipped with valve shaft hole and lower valve shaft hole in the described valve body, described upper valve shaft passes valve seat and stretches in the described upper valve shaft hole, described lower valve shaft passes valve seat and stretches in the lower valve shaft hole, described upper valve shaft hole madial wall is provided with the inwall stepped slot, described inwall stepped slot is provided with the inwall step by a side of fluid passage, be provided with axle sleeve in the described inwall step, described axle sleeve is set in outside the valve shaft, the setting that offsets of described axle sleeve and inwall step, the sidewall of described butterfly plate is provided with along butterfly plate place circumferencial direction and is provided with annular groove, be provided with the lower valve shaft fluid passage in the described lower valve shaft, described annular groove is communicated with described lower valve shaft fluid passage, and described lower valve shaft fluid passage is connected with the leak detection conduit away from a side of annular groove.
As preferably, be provided with lower valve body connecting tube in described valve body and the lower valve shaft corresponding position, described lower valve shaft fluid passage is communicated with described leak detection conduit by lower valve body connecting tube.After adopting above-mentioned preferred version, the fluid of leakage flows into lower valve body connecting tube by the lower valve shaft fluid passage and flows into leak detection tube again, and structure is more rationally compact.
As preferably, described valve seat and valve body are installed cooperation by the mode of engaging.After adopting above-mentioned preferred version, valve seat and valve body detachably arrange, and personnel's easy to use dismounting detects maintenance.
As preferably, described upper valve shaft hole is provided with the end face stepped slot away from the end face of an end of butterfly plate, described end face stepped slot is connected with the inwall stepped slot, one side of the inner wall stepped slot of described end face stepped slot is provided with the end face step, be provided with pressing plate in the described end face stepped slot, described pressing plate is fixedly connected with the mode of valve body by bolt.After adopting above-mentioned preferred version, axle sleeve can by pressing plate by tightly with the setting that offsets of the inwall step of inwall stepped slot, the installation of lining is more firm, lining is tightr with cooperating of valve shaft.
As preferably, be provided with packing ring between a side of the pressured plate of described axle sleeve and the pressing plate, the both sides of described packing ring respectively with the setting that offsets of the end face of described axle sleeve and pressing plate.After adopting above-mentioned preferred version, packing ring the friction that can reduce between axle sleeve and the pressing plate is set, reduce the destruction to axle sleeve.
As preferably, the outer side wall of described axle sleeve is provided with the external sealed groove, and described external sealed groove is circular groove, is provided with exterior seal ring in the described external sealed groove, and described exterior seal ring is the O RunddichtringO.After adopting above-mentioned preferred version, the sealing of the madial wall in the upper valve shaft hole in axle sleeve and the valve body is better.
As preferably, the madial wall of cover is provided with interior seal groove, and described interior seal groove is circular groove, is provided with inner seal ring in the described interior seal groove, and described inner seal ring is the O RunddichtringO.After adopting above-mentioned preferred version, the sealing of the outer side wall of axle sleeve madial wall and valve rod is tightr.
Anti-leakage butterfly valve of the present utility model is provided with annular groove at butterfly plate, the valve body outer side wall is provided with the leak detection conduit, when butterfly valve occurs to leak, the liquid that leaks is introduced into from annular groove in the leak detection conduit, the monitoring state of personnel easy to use to leaking, and arranging of lining can make the rotation of valve shaft more flexible.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation;
Fig. 2 is the cut-away section structural representation of butterfly plate;
Fig. 3 is the partial enlarged drawing at A place among Fig. 1;
Fig. 4 is the partial enlarged drawing at B place among Fig. 1.
Embodiment
Such as Fig. 1-shown in Figure 4, embodiment of the present utility model is a kind of anti-leakage butterfly valve specifically, comprises valve body 1, is provided with valve seat 2 in the valve body 1, is provided with the fluid passage 21 of passing through for medium fluid in the valve seat 2.Be provided with butterfly plate 3 in the fluid passage 21, butterfly plate 3 is provided with the valve shaft 4 with butterfly plate 3 interlocks.Valve shaft 4 is along butterfly plate 3 radial symmetric settings.Valve shaft 4 comprises upper valve shaft 41 and the lower valve shaft 42 of coaxial setting, and upper valve shaft 41 and lower valve shaft 42 are separately positioned on the both sides of butterfly plate 3.Be respectively equipped with valve shaft hole 11 and lower valve shaft hole 12 in the valve body 1.Upper valve shaft 41 passes valve seat 2 and stretches in the valve shaft hole 11.Lower valve shaft 42 passes valve seat 2 and stretches in the lower valve shaft hole 12, and the madial wall in upper valve shaft hole 11 is provided with inwall stepped slot 111.Inwall stepped slot 111 is provided with inwall step 1111 by a side of fluid passage 21.Be provided with axle sleeve 5 in the inwall stepped slot 111, axle sleeve 5 is set in outside the valve shaft 4, the setting that offsets of axle sleeve 5 and inwall step 1111.The sidewall of butterfly plate 3 is provided with along butterfly plate 3 place circumferencial directions and is provided with annular groove 31, be provided with lower valve shaft fluid passage 421 in the lower valve shaft 42, annular groove 31 is communicated with lower valve shaft fluid passage 421, lower valve shaft fluid passage 421 is connected with leak detection conduit 6 away from a side of annular groove 31, and leak detection conduit 6 is provided with leak detection screw nut switch 61 away from a side of butterfly plate.
Be provided with lower valve body connecting tube 13 in valve body 1 and lower valve shaft 42 corresponding positions, lower valve shaft fluid passage 421 is communicated with leak detection conduit 6 by lower valve body connecting tube 13.Valve seat 2 and valve body 1 are installed cooperation by the mode of engaging.
Upper valve shaft hole 11 is provided with end face stepped slot 112 away from the end face of an end of butterfly plate 3, end face stepped slot 112 is connected with inwall stepped slot 111, one side of end face stepped slot 112 inner wall stepped slots 111 is provided with end face step 1121, be provided with pressing plate 7 in the end face stepped slot 112, pressing plate 7 is fixedly connected with the mode of valve body 1 by bolt.
Be provided with packing ring 8 between one side of axle sleeve 5 pressured plates 7 and the pressing plate 7, the both sides of packing ring 8 respectively with the setting that offsets of the end face of axle sleeve 5 and pressing plate 7.The outer side wall of axle sleeve 5 is provided with external sealed groove 51, and external sealed groove 51 is circular groove, is provided with exterior seal ring 511 in the external sealed groove 51, and exterior seal ring 511 is the O RunddichtringO.The madial wall of axle sleeve 5 is provided with interior seal groove 52, and interior seal groove 52 is circular groove, is provided with inner seal ring 521 in the interior seal groove 52, and inner seal ring 521 is the O RunddichtringO.
The working principle of the working principle of anti-leakage butterfly valve of the present utility model and the butterfly valve of prior art is basic identical; difference is: anti-leakage butterfly valve of the present utility model arranges annular groove 31 at butterfly plate; and the leak detection conduit 6 that is communicated with annular groove 31 in valve body 1 outer setting; be convenient to people to the detection of leakage liquid; lining 5 the friction that can reduce between valve shaft 41 and the valve body 1 is set, effectively protect valve shaft 41.
Claims (7)
1. anti-leakage butterfly valve, comprise valve body, be provided with valve seat in the described valve body, be provided with the fluid passage in the described valve seat, be provided with butterfly plate in the described fluid passage, described butterfly plate is provided with the valve shaft with the butterfly plate interlock, described valve shaft arranges along the butterfly plate radial symmetric, it is characterized in that: described valve shaft comprises upper valve shaft and the lower valve shaft of coaxial setting, described upper valve shaft and lower valve shaft are separately positioned on the both sides of butterfly plate, be respectively equipped with valve shaft hole and lower valve shaft hole in the described valve body, described upper valve shaft passes valve seat and stretches in the described upper valve shaft hole, described lower valve shaft passes valve seat and stretches in the lower valve shaft hole, described upper valve shaft hole madial wall is provided with the inwall stepped slot, described inwall stepped slot is provided with the inwall step by a side of fluid passage, be provided with axle sleeve in the described inwall step, described axle sleeve is set in outside the valve shaft, the setting that offsets of described axle sleeve and inwall step, the sidewall of described butterfly plate is provided with along butterfly plate place circumferencial direction and is provided with annular groove, be provided with the lower valve shaft fluid passage in the described lower valve shaft, described annular groove is communicated with described lower valve shaft fluid passage, and described lower valve shaft fluid passage is connected with the leak detection conduit away from a side of annular groove.
2. anti-leakage butterfly valve according to claim 1, it is characterized in that: be provided with lower valve body connecting tube in described valve body and the lower valve shaft corresponding position, described lower valve shaft fluid passage is communicated with described leak detection conduit by lower valve body connecting tube.
3. anti-leakage butterfly valve according to claim 1 is characterized in that: described valve seat and valve body are installed cooperation by the mode of engaging.
4. anti-leakage butterfly valve according to claim 1, it is characterized in that: described upper valve shaft hole is provided with the end face stepped slot away from the end face of an end of butterfly plate, described end face stepped slot is connected with the inwall stepped slot, one side of the inner wall stepped slot of described end face stepped slot is provided with the end face step, be provided with pressing plate in the described end face stepped slot, described pressing plate is fixedly connected with the mode of valve body by bolt.
5. anti-leakage butterfly valve according to claim 4 is characterized in that: be provided with packing ring between a side of the pressured plate of described axle sleeve and the pressing plate, the both sides of described packing ring respectively with the setting that offsets of the end face of described axle sleeve and pressing plate.
6. anti-leakage butterfly valve according to claim 1, it is characterized in that: the outer side wall of described axle sleeve is provided with the external sealed groove, and described external sealed groove is circular groove, is provided with exterior seal ring in the described external sealed groove, and described exterior seal ring is the O RunddichtringO.
7. anti-leakage butterfly valve according to claim 1, it is characterized in that: the madial wall of described axle sleeve is provided with interior seal groove, and described interior seal groove is circular groove, is provided with inner seal ring in the described interior seal groove, and described inner seal ring is the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264634 CN203248751U (en) | 2013-05-14 | 2013-05-14 | Anti-leakage butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264634 CN203248751U (en) | 2013-05-14 | 2013-05-14 | Anti-leakage butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248751U true CN203248751U (en) | 2013-10-23 |
Family
ID=49375190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320264634 Expired - Fee Related CN203248751U (en) | 2013-05-14 | 2013-05-14 | Anti-leakage butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671969A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Double-butterfly-plate external-cleaning germfree mix-proof valve |
| CN103671970A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Cleaning type anti-mixing butterfly valve with single butterfly plate |
-
2013
- 2013-05-14 CN CN 201320264634 patent/CN203248751U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671969A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Double-butterfly-plate external-cleaning germfree mix-proof valve |
| CN103671970A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Cleaning type anti-mixing butterfly valve with single butterfly plate |
| CN103671969B (en) * | 2013-12-02 | 2016-06-08 | 东正科技有限公司 | A kind of outer wash sterile formula mixing-preventing valve of two butterfly plate |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20190514 |