CN203442165U - Improved structure of valve rod connection portion of vacuum butterfly valve - Google Patents

Improved structure of valve rod connection portion of vacuum butterfly valve Download PDF

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Publication number
CN203442165U
CN203442165U CN201320361199.1U CN201320361199U CN203442165U CN 203442165 U CN203442165 U CN 203442165U CN 201320361199 U CN201320361199 U CN 201320361199U CN 203442165 U CN203442165 U CN 203442165U
Authority
CN
China
Prior art keywords
valve
valve rod
filler
padding
improved
Prior art date
Application number
CN201320361199.1U
Other languages
Chinese (zh)
Inventor
罗世云
李小明
王俊峰
Original Assignee
厦门弗瑞特流体控制有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 厦门弗瑞特流体控制有限公司 filed Critical 厦门弗瑞特流体控制有限公司
Priority to CN201320361199.1U priority Critical patent/CN203442165U/en
Application granted granted Critical
Publication of CN203442165U publication Critical patent/CN203442165U/en

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Abstract

The utility model discloses an improved structure of a valve rod connection portion of a vacuum butterfly valve. The improved structure comprises a valve rod and a valve body. The improved structure is characterized in that a shaft sleeve, a cushion block, an O-shaped seal ring, lower padding, middle padding and upper padding are arranged in the gap between the valve rod and the valve body from bottom to top. The padding portions of the valve are used for preventing leakage and external vacuum immersion when media enter the valve. The O-shaped seal ring, the lower padding, the middle padding and the upper padding are adopted for combined sealing, so that leakage of external air is eliminated. In the process of system pressurization, leakage through the valve rod is avoided, and vacuum operation of a system is guaranteed. In addition, the shaft sleeve comprises a bush and a bearing, the friction coefficient between the bush and the bearing is small, the wear-resisting property is good, the valve rod can rotate smoothly, the service life of the valve is prolonged, and the reliability of the valve is improved. The bush and the bearing of a rotating shaft of the valve can reduce the friction coefficient of the valve rod in the opening and closing processes.

Description

A kind of improvement structure of valve rod attachment portion of vacuum butterfly valve
Technical field
The utility model relates to a kind of improvement structure of valve rod attachment portion of vacuum butterfly valve, relates to particularly a kind of filler part of vacuum butterfly valve and the improvement structure of the valve rod attachment portion of rotating shaft rotating part.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, and the switch that also can be used for low pressure pipeline medium is simultaneously controlled.Butterfly valve refers to that closure member (flap or butterfly plate) is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the object that opens and closes or regulate.Butterfly valve is applicable to carry on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, cold and hot air, chemical industry smelting and generation environment-friendly, for regulating and block flowing of medium.
Owing to being Flow-rate adjustment for gas or liquid, so its sealability is extremely important.The improvement structure of the valve rod attachment portion of the valve stem part of existing vacuum butterfly valve is to be socketed on valve rod by a plurality of seal rings are superimposed.But there is following deficiency in the improvement structure of this valve rod attachment portion: sealability is reliable not, still has the possibility of gas leakage.
Model utility content
The purpose of this utility model is to provide a kind of improvement structure of valve rod attachment portion of vacuum butterfly valve, to solve the above-mentioned problems in the prior art.
The technological scheme that the utility model provides is as follows:
The improvement structure of valve rod attachment portion, comprise a valve rod and a valve body, it is characterized in that: in the space between valve rod and valve body, be provided with from the bottom to top axle sleeve, cushion block, O-ring seals, lower filler, middle filler and upper filler.
In preferred embodiment of the present utility model, the vertical section of lower filler is a convex, and it comprises the protuberance that a base portion and makes progress; The vertical section of middle filler is swallow-tail form, and it comprises and is positioned at protuberance above and is positioned at recess below, the protuberance coupling of the shape of its center dant and lower filler; The vertical section of upper filler is inverted concave, and it comprises that the base portion and being positioned at is above positioned at recess below, wherein, and the form fit of the shape of the recess of upper filler and the protuberance of middle filler.
In preferred embodiment of the present utility model, this axle sleeve comprises that one is positioned at the lining that inside directly contacts with valve rod, and a bearing being positioned at outside lining, between lining and bearing, can relatively rotate.
Seen from the above description, the utility model provides a kind of improvement structure of valve rod attachment portion of vacuum butterfly valve, comprise a valve rod and a valve body, it is characterized in that: in the space between valve rod and valve body, be provided with from the bottom to top axle sleeve, cushion block, O-ring seals, lower filler, middle filler and upper filler.The partly leakage when preventing that medium from entering valve and the immersion of extraneous vacuum of the filler of valve; Adopt O RunddichtringO, lower filler, middle filler and upper filler combination seal, and have stopped the leak of outside air, when system supercharging, can not leak outside by valve rod simultaneously, guarantee system vacuum operation.In addition, axle sleeve comprises a lining and a bearing, and friction factor is little between the two, and wear-resisting property is good, can guarantee that valve rod smoothly rotates, and has strengthened spreadable life and the reliability of valve.The lining of valve hinges and bearing can reduce the friction of valve rod in opening-closing process and wipe coefficient.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of butterfly valve of the present utility model;
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1;
Fig. 3 is cross-sectional view;
Fig. 4 is the structural representation that is sealed and matched of the present utility model.
1-valve rod
2-butterfly plate
3-valve body
4-axle sleeve
41-lining 42-bearing
5-cushion block
6-O shape seal ring
Filler under 7-
Filler in 8-
The upper filler of 9-
Embodiment
Specific embodiment of the utility model, with reference to Fig. 1, vacuum butterfly valve comprises valve rod 1, butterfly plate 2, valve body 3 etc.
Referring to Fig. 2 and Fig. 3, in the space between valve rod 1 and valve body 2, be provided with from the bottom to top axle sleeve 4, cushion block 5, O-ring seals 6, lower filler 7, middle filler 8 and upper filler 9 simultaneously.
Wherein, this axle sleeve 4 comprises that one is positioned at the lining 41 that inside directly contacts with valve rod, and a bearing 42 being positioned at outside lining 41, between lining 41 and bearing 42, can relatively rotate.
The vertical section of lower filler 7 is a convex, it comprises a base portion 71 and a protuberance making progress 72, the vertical section of middle filler 8 is swallow-tail form, and it comprises the protuberance 82 being positioned at above and is positioned at recess 83 below, protuberance 72 couplings of the shape of its center dant 83 and lower filler 7.The vertical section of upper filler 9 is inverted concave, and it comprises that the base portion 92 and being positioned at is above positioned at recess 91 below, wherein, and the form fit of the protuberance 82 of the shape of recess 91 and middle filler 8.
The partly leakage when preventing that medium from entering valve and the immersion of extraneous vacuum of the filler of valve; Valve rod of the present utility model adopts O RunddichtringO 6, and lower filler 7, middle filler 8 and upper filler 9 combination seals have been stopped the leak of outside air, when system supercharging, can not leak outside by valve rod simultaneously, guarantee system vacuum operation.
Valve rod has high-performance nitriding stainless steel lining 41 and bearing 42, and lining 41 is little with bearing 42 friction factor, and wear-resisting property is good, can guarantee that valve rod smoothly rotates, and has strengthened spreadable life and the reliability of valve.The lining of valve hinges and bearing can reduce the friction of valve rod in opening-closing process and wipe coefficient.

Claims (2)

1. the improvement structure of the valve rod attachment portion of a vacuum butterfly valve, comprise a valve rod and a valve body, it is characterized in that: in the space between valve rod and valve body, be provided with from the bottom to top axle sleeve, cushion block, O-ring seals, lower filler, middle filler and upper filler, wherein
The vertical section of lower filler is a convex, and it comprises the protuberance that a base portion and makes progress; The vertical section of middle filler is swallow-tail form, and it comprises and is positioned at protuberance above and is positioned at recess below, the protuberance coupling of the shape of its center dant and lower filler; The vertical section of upper filler is inverted concave, and it comprises that the base portion and being positioned at is above positioned at recess below, wherein, and the form fit of the shape of the recess of upper filler and the protuberance of middle filler.
2. the improvement structure of the valve rod attachment portion of a kind of vacuum butterfly valve as claimed in claim 1, it is characterized in that: this axle sleeve comprises that one is positioned at the lining that inside directly contacts with valve rod, and the bearing being positioned at outside lining, between lining and bearing, can relatively rotate.
CN201320361199.1U 2013-06-21 2013-06-21 Improved structure of valve rod connection portion of vacuum butterfly valve CN203442165U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320361199.1U CN203442165U (en) 2013-06-21 2013-06-21 Improved structure of valve rod connection portion of vacuum butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320361199.1U CN203442165U (en) 2013-06-21 2013-06-21 Improved structure of valve rod connection portion of vacuum butterfly valve

Publications (1)

Publication Number Publication Date
CN203442165U true CN203442165U (en) 2014-02-19

Family

ID=50093222

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320361199.1U CN203442165U (en) 2013-06-21 2013-06-21 Improved structure of valve rod connection portion of vacuum butterfly valve

Country Status (1)

Country Link
CN (1) CN203442165U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994273A (en) * 2014-05-28 2014-08-20 浙江威腾阀门有限公司 Valve rod sliding seal device
CN104006212A (en) * 2014-06-05 2014-08-27 张家港富瑞特种装备股份有限公司 Valve rod sealing device for ball valves
CN105673766A (en) * 2016-03-25 2016-06-15 嘉兴职业技术学院 Oil cylinder device dissipating heat automatically
CN106352099A (en) * 2016-09-13 2017-01-25 远大空调有限公司 High-temperature-resistant flue gas valve
CN106768183A (en) * 2016-12-01 2017-05-31 上海航天设备制造总厂 Two point form liquid level sensor for measuring Rocket tank volume loading liquid level

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994273A (en) * 2014-05-28 2014-08-20 浙江威腾阀门有限公司 Valve rod sliding seal device
CN104006212A (en) * 2014-06-05 2014-08-27 张家港富瑞特种装备股份有限公司 Valve rod sealing device for ball valves
CN104006212B (en) * 2014-06-05 2016-03-02 张家港富瑞特种装备股份有限公司 A kind of valve rod sealing device of ball valve
CN105673766A (en) * 2016-03-25 2016-06-15 嘉兴职业技术学院 Oil cylinder device dissipating heat automatically
CN105673766B (en) * 2016-03-25 2019-02-26 嘉兴职业技术学院 From heat dissipation cylinder apparatus
CN106352099A (en) * 2016-09-13 2017-01-25 远大空调有限公司 High-temperature-resistant flue gas valve
CN106768183A (en) * 2016-12-01 2017-05-31 上海航天设备制造总厂 Two point form liquid level sensor for measuring Rocket tank volume loading liquid level

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140219

Termination date: 20150621

EXPY Termination of patent right or utility model