CN202302001U

CN202302001U - Butterfly improvement structure

Info

Publication number: CN202302001U
Application number: CN2011203134156U
Authority: CN
Inventors: 窦世法
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-26
Filing date: 2011-08-26
Publication date: 2012-07-04
Anticipated expiration: 2021-08-26

Abstract

The utility model discloses a butterfly improvement structure which comprises a valve body, a valve rod, a valve clack, a valve cover and a handle, wherein the valve cover is connected with one end of the valve body; the valve clack is arranged in the valve body, and is fixedly connected with the valve rod; one end of the valve rod is in transmission connection with the handle; the valve rod, the valve clack and the valve body are axially and radially arranged in an eccentric mode; the seal surface of the valve clack is provided with a wedge-shaped structure; more than one seal ring is sleeved on the valve rod; and the seal rings are tightly embedded in an annular groove arranged in the valve body. The butterfly improvement structure provided by the utility model is simple and compact in structure, has small volume, light weight and small occupied space, is simple and light in operation, is convenient and reliable to use, is convenient to install, and is suitable for being used in pipelines of media of oils, water, brine, alkaline liquor, sea water, nitric acid, hydrochloric acid, sulphuric acid and the like in the industries of chemical engineering, petrification, metallurgy, medicine, food and the like as adjusting and cut-off equipment.

Description

The butterfly valve structure-improved

Technical field

The utility model relates to a kind of sealing butterfly valve, particularly a kind of butterfly valve structure-improved.

Background technique

Butterfly valve (butterfly valve) claim Flap valve again; It is a kind of modulating valve simple in structure; Also can be used for simultaneously the switch control of low pressure pipeline medium; It refers to that closure member (flap or butterfly plate) is generally disk, rotates around valve shaft and reaches open and close, cuts off and throttling function thereby on pipeline, play.Because butterfly valve has advantages such as open-close convenient is rapid, laborsaving, simple in structure, and volume is little, therefore be widely used in the fields such as chemical industry, metallurgy, food by people at present.Then, existing reed valve tends to produce situation such as cavitation erosion, wearing and tearing through using and meet with under the situation of improper use for a long time, and have open and close 0 °～10 ° moment sealing surface still be in the deficiency that sliding contact rubs, and then influence its sealability; Moreover the existing reed valve resistance to high temperature also has much room for improvement.

The model utility content

The purpose of the utility model be to provide a kind of have high temperature resistant, high pressure and corrosion-resistant, resistance to wear, open and close characteristics such as not having friction, long service life, the butterfly valve structure-improved of favorable sealing property, thereby overcome deficiency of the prior art.

For realizing the foregoing invention purpose, the utility model has adopted following technological scheme:

A kind of butterfly valve structure-improved is characterized in that: it comprises valve body, valve rod, flap, valve gap and handle, and valve gap is connected with valve body one end; Flap is located in the valve body, and is fixedly connected with valve rod, and valve rod one end and handle are in transmission connection; Axially and directly upwards be eccentric the setting between said valve rod, flap and the valve body three; The sealing surface of said flap has wedge-shaped structure, is arranged with one on the said valve rod with upper sealing ring, and said seal ring closely is embedded in the circular groove that is provided with in the valve body.

Say that further said butterfly valve structure-improved also comprises a triangle pole, this triangle pole one end is inserted in the valve rod, and its other end is connected with handle.

Sheathed vertically two O type seal rings on the said valve rod, these two O type seal rings closely are embedded in the circular groove that is provided with in the valve body.

The sealing surface of said flap has the oblique cone oval structure.

Also be provided with heat insulating mattress and aluminium foil between said valve gap and the valve body.

Said heat insulating mattress adopts the PE foamed pad.

Said handle is provided with bayonet socket, has the auto-lock function effect, and said handle via pins is fixedly connected with valve stem seal.

Also be arranged with valve seals on the said valve body the other end.

Compared with prior art, the advantage of the utility model is:

(1) (valve rod is to valve body to have adopted two off-centre; Valve rod is to flap) and the oval sealing configuration of special oblique cone; Making between flap and the valve body sealing surface does not have friction driving, has improved sealability, has prolonged life of valve; And wedge-shaped design makes valve that the tight more automatic sealing function in pass more arranged, and has compensatory, zero leakage between the sealing surface;

(2) adopt handle to control the flap angle and produce elastic packing, and flap preferably is made up of lightweight materials such as ETFE, have, be prone to unlatching, so have metering characteristics preferably from sliding performance through valve rod;

(3) valve body adopts the sealing of aluminum foil metal body; The design of the elastic sealed body of by-election valve seals and flap again; Multi-angle comprehensive is considered to prolong the sealed valve life-span, further says, the metal body sealing can adapt to higher operating temperature; Elastomeric seal has changed routine through selection and has received temperature limitation and corrosive defective

(4) this butterfly valve structure compact, volume little, in light weight, take up room little, simple to operate light and handy, easy to use and reliable, be convenient to install, be suitable on the pipeline of media such as oil product, water, salt solution, alkali lye, seawater, nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid in industries such as chemical industry, petrochemical industry, smelting, medicine, food as regulating and cut-off device uses.

Description of drawings

Fig. 1 is the plan view of butterfly valve in the utility model one preferred embodiment;

Fig. 2 be butterfly valve shown in Fig. 1 along A-A to cross-sectional view;

Each assembly and reference character thereof are respectively among the figure: valve body 1, valve gap 2, handle 3, valve rod 4, flap 5, pin 6, valve seals 7, triangle pole 8, PE foamed pad 9, O type circle (EPDM) 10, O type circle (ETFE) 11, aluminium foil 12.

Embodiment

Be further described below in conjunction with accompanying drawing and a preferred embodiment technological scheme the utility model.

Present embodiment relates to a kind of closed type PE butterfly valve, its medium temperature that can bear≤100 ℃, and the airtight pressure of nominal is 0.2Mpa, can be arranged in the chemical industry liquid line etc. and locate, in order to be communicated with, to open and close or to regulate the medium amount.

Consult Fig. 1-2, this closed type butterfly valve comprises valve body 1, valve gap 2, handle 3, valve rod 4, flap 5, pin 6 (one group two), valve seals 7, triangle pole 8, PE foamed pad 9, O type circle (EPDM) 10, O type circle (ETFE) 11 and aluminium foil 12.

This valve gap is connected with valve body one end, and flap is located in the valve body, and is fixedly connected with valve rod; Axially and directly upwards be eccentric the setting between valve rod, flap and the valve body three; The sealing surface of flap has wedge-shaped structure, is arranged with two seal rings on the valve rod vertically, and these two seal rings closely are embedded in the circular groove that is provided with in the valve body; Triangle pole one end is inserted in the valve rod, and its other end and handle are in transmission connection.

This PE butterfly valve has adopted two off-centre, and (valve rod is to valve body; Valve rod is to flap) and oval (triangle pole molding and forming valve rod the is controlled linkage structure) sealing configuration of special oblique cone; Solved traditional eccentric-butterfly-valve still is in the sliding contact friction at keying 0 °～10 ° moments sealing surface disadvantage from material and structure; Realize that flap promptly separates opening the moment sealing surface, close the effect that contact promptly seals, reach increase the service life, purpose that sealability is best.

This valve seals is embedded on the valve body, and O type circle (EPDM) and O type circle (ETFE) are attached on the valve rod (triangle pole), and fixed cover is installed on handle center's axle, has strengthened the special valve sealability of PE butterfly valve for IBC ton bucket apparatus-valve from structure and principle.

This PE butterfly valve is by road seal style after two kinds of valve gap, PE foamed pad and the foil sealing, and the bayonet socket on the handle is designed with the auto-lock function effect, by pin as the visible type sealing and fixing pattern of handle part.Aforementioned ' aluminium foil ' metal body that both adopted seals; The design of the elastic sealed body of by-election ' valve seals ' and flap again; Take all factors into consideration the prolongation sealed valve life-span from art designs and selection angle; Particularly, the metal body sealing can adapt to higher operating temperature, and elastomeric seal has changed routine through selection and received temperature limitation and corrosive defective.

This butterfly valve structure is simple, volume is little, in light weight; Easy for installation, but fast opening and closing is simple to operate; Have simultaneously good high temperature resistant, high pressure and corrosion-resistant, resistance to wear and the fluid control characteristic; Open and close not have friction, come compensation sealing along with the moment of handle through valve rod increases when closing, improved the sealability of butterfly valve and the advantage that increases the service life.

This PE butterfly valve makes the disc flap rotate around axis through regulating handle when work, and angle of swing is between 0 °-90 °, and when rotating to 90 °, valve then is a full-gear, and under state, fluid is very little through the resistance that this valve produced.

This butterfly valve can be used as the special valve use that IBC ton barreled is put, and so that media fluid is controlled or regulated, it has following advantage at least: good seal performance, and running is light, and secondary corrosion is high temperature resistant, easy to operate, flexible, safe and reliable.

Although the embodiment of the utility model is open as above; But it is not restricted to listed utilization in specification and the mode of execution; It can be applied to the field of various suitable the utility model fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the utility model is not limited to specific details and illustrates here and describe.

Claims

1. butterfly valve structure-improved, it is characterized in that: it comprises valve body, valve rod, flap, valve gap and handle, valve gap is connected with valve body one end; Flap is located in the valve body, and is fixedly connected with valve rod, and valve rod one end and handle are in transmission connection; Axially and directly upwards be eccentric the setting between said valve rod, flap and the valve body three; The sealing surface of said flap has wedge-shaped structure, is arranged with one on the said valve rod with upper sealing ring, and said seal ring closely is embedded in the circular groove that is provided with in the valve body.

2. butterfly valve structure-improved according to claim 1 is characterized in that: said butterfly valve structure-improved also comprises a triangle pole, and this triangle pole one end is inserted in the valve rod, and its other end is connected with handle.

3. butterfly valve structure-improved according to claim 1 is characterized in that: sheathed vertically two O type seal rings on the said valve rod, these two O type seal rings closely are embedded in the circular groove that is provided with in the valve body.

4. butterfly valve structure-improved according to claim 1 is characterized in that: the sealing surface of said flap has the oblique cone oval structure.

5. butterfly valve structure-improved according to claim 1 is characterized in that: also be provided with heat insulating mattress and aluminium foil between said valve gap and the valve body.

6. butterfly valve structure-improved according to claim 1 is characterized in that: said heat insulating mattress adopts the PE foamed pad.

7. butterfly valve structure-improved according to claim 1 is characterized in that: said handle is provided with bayonet socket, and said handle via pins is fixedly connected with valve stem seal.

8. butterfly valve structure-improved according to claim 1 is characterized in that: also be arranged with valve seals on the said valve body the other end.