CN203594797U - Telescopic cylinder power-assisted stop valve - Google Patents

Telescopic cylinder power-assisted stop valve Download PDF

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Publication number
CN203594797U
CN203594797U CN201320812143.3U CN201320812143U CN203594797U CN 203594797 U CN203594797 U CN 203594797U CN 201320812143 U CN201320812143 U CN 201320812143U CN 203594797 U CN203594797 U CN 203594797U
Authority
CN
China
Prior art keywords
cylinder
valve
servo
stop valve
assisted
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
Application number
CN201320812143.3U
Other languages
Chinese (zh)
Inventor
刘向东
刘万康
刘万群
刘程鹏
池万养
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG MEIDE MACHINERY Co Ltd
Original Assignee
ZHEJIANG MEIDE MACHINERY Co Ltd
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 ZHEJIANG MEIDE MACHINERY Co Ltd filed Critical ZHEJIANG MEIDE MACHINERY Co Ltd
Priority to CN201320812143.3U priority Critical patent/CN203594797U/en
Application granted granted Critical
Publication of CN203594797U publication Critical patent/CN203594797U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a telescopic cylinder power-assisted stop valve comprising a valve cylinder, a valve rod, a piston, a fixed power-assisted cylinder and a telescopic power-assisted cylinder. One end of the valve rod is connected with the piston, the fixed power-assisted cylinder is arranged in the valve cylinder, and the middle of the valve rod is connected with the telescopic power-assisted cylinder arranged in the fixed power-assisted cylinder in a sleeved mode. The problem that due to overlarge stroke, the stop valve is overhigh, and then manual operation performed on a hand wheel is affected is solved.

Description

Telescopic cylinder power-assisted stop valve
Technical field
The utility model relates to a kind of stop valve, relates in particular to a kind of telescopic cylinder power-assisted stop valve.
Background technique
Stop valve claims again pipe valve valve, belongs to forced seal formula valve, so in the time of valve closing, must exert pressure to flap, does not leak with forced seal face.In the time that medium enters valve by flap below, the required resistance overcoming of steering force, is the frictional force of valve rod and filler and the thrust being produced by the pressure of medium, and the power that the force rate of closing valve is opened valve is large, so it is large that the diameter of valve rod is wanted, otherwise can there is the fault of valve rod bending.Be divided into three kinds by Placement: flange connection, screwed connection, be welded to connect.From self-packing valve occurs, the MEDIA FLOW of stop valve enters valve pocket to just changing by flap top, and at this moment, under pressure medium effect, the power of closing valve is little, and it is large to open the power of valve, and the diameter of valve rod can correspondingly reduce.Meanwhile, under medium effect, the valve of this form is also tighter.Once regulation of China's valve " three changes are given ", the flow direction of stop valve, adopts from top to bottom without exception.When stop valve is opened, the Lift of flap, for nominal diameter 25%~30% time, it is maximum that flow has reached, represents that valve has reached fully open position.So the fully open position of stop valve, should be decided by the stroke of flap.
Traditional stop valve exists and makes stop valve excessive height because stroke is excessive, affects the problem of manual operation handwheel.
Model utility content
The purpose of this utility model is just to provide in order to address the above problem a kind of telescopic cylinder power-assisted stop valve.
In order to achieve the above object, the utility model has adopted following technological scheme:
A kind of telescopic cylinder power-assisted stop valve, comprise valve barrel, valve rod, piston, fixing servo-cylinder and flexible servo-cylinder, one end of described valve rod is connected with described piston, described fixing servo-cylinder is arranged in described valve barrel, the middle part of described valve rod is connected with described flexible servo-cylinder, and described flexible servo-cylinder is enclosed within described fixing servo-cylinder.
Particularly, described piston is cast-iron piston, and the upper end of described piston is connected with one end of described valve rod.
Particularly, described flexible servo-cylinder and described fixing servo-cylinder all adopt aluminum alloy cylinder.
The beneficial effects of the utility model are:
The utility model is a kind of telescopic cylinder power-assisted stop valve, has been solved and has been made stop valve excessive height because stroke is excessive by flexible servo-cylinder, affects the problem of manual operation handwheel.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model telescopic cylinder power-assisted stop valve.
In figure: 1-valve rod, 2-piston, 3-valve barrel, 4-fixes servo-cylinder, the 5-servo-cylinder that stretches.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of telescopic cylinder power-assisted stop valve, comprise valve barrel 3, valve rod 1, piston 2, fixing servo-cylinder 4 and flexible servo-cylinder 5, one end of valve rod 1 is connected with piston 2, fixing servo-cylinder 4 is arranged in valve barrel 3, the middle part of valve rod 1 is connected with flexible servo-cylinder 5, and flexible servo-cylinder 5 is enclosed within fixing servo-cylinder 4.
Piston 2 is cast-iron piston, and the upper end of piston 2 is connected with one end of valve rod 1.
Flexible servo-cylinder 5 and fixing servo-cylinder 4 all adopt aluminum alloy cylinder.
The utility model has been solved and has been made stop valve excessive height because stroke is excessive by flexible servo-cylinder 5, affects the problem of manual operation handwheel, has the value of promoting the use of.

Claims (3)

1. a telescopic cylinder power-assisted stop valve, comprise valve barrel, valve rod and piston, one end of described valve rod is connected with described piston, it is characterized in that: also comprise fixing servo-cylinder and flexible servo-cylinder, described fixing servo-cylinder is arranged in described valve barrel, the middle part of described valve rod is connected with described flexible servo-cylinder, and described flexible servo-cylinder is enclosed within described fixing servo-cylinder, and the external diameter of described flexible servo-cylinder is identical with the internal diameter of described fixing servo-cylinder.
2. a kind of telescopic cylinder power-assisted stop valve according to claim 1, is characterized in that: described piston is cast-iron piston, and the upper end of described piston is connected with one end of described valve rod.
3. a kind of telescopic cylinder power-assisted stop valve according to claim 1, is characterized in that: described flexible servo-cylinder and described fixing servo-cylinder all adopt aluminum alloy cylinder.
CN201320812143.3U 2013-12-12 2013-12-12 Telescopic cylinder power-assisted stop valve Expired - Fee Related CN203594797U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320812143.3U CN203594797U (en) 2013-12-12 2013-12-12 Telescopic cylinder power-assisted stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320812143.3U CN203594797U (en) 2013-12-12 2013-12-12 Telescopic cylinder power-assisted stop valve

Publications (1)

Publication Number Publication Date
CN203594797U true CN203594797U (en) 2014-05-14

Family

ID=50675689

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320812143.3U Expired - Fee Related CN203594797U (en) 2013-12-12 2013-12-12 Telescopic cylinder power-assisted stop valve

Country Status (1)

Country Link
CN (1) CN203594797U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110521A (en) * 2014-06-30 2014-10-22 浙江美德机械有限公司 Novel assistant stopper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110521A (en) * 2014-06-30 2014-10-22 浙江美德机械有限公司 Novel assistant stopper
CN104110521B (en) * 2014-06-30 2016-08-24 浙江美德机械有限公司 Novel power-assisted cut-off device

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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

Granted publication date: 20140514

Termination date: 20141212

EXPY Termination of patent right or utility model