CN2533349Y

CN2533349Y - Expansion gate valve

Info

Publication number: CN2533349Y
Application number: CN 02213745
Authority: CN
Inventors: 孔庆华; 钊洪智; 李长年; 唐先玺
Original assignee: 钊洪智
Priority date: 2002-04-04
Filing date: 2002-04-04
Publication date: 2003-01-29
Anticipated expiration: 2012-04-04

Abstract

The utility model provides an expanding gas valve that comprises a valve body, a valve cover, a support, a protective bracket, a valve core and a valve plate; wherein, the valve core is connected with the valve plate through a coattail structure and is arranged between the valve body the valve cover; the lower end of the valve rod is connected with the valve core through a screw thread; the upper part of the valve rod is commented with the upper part of the valve cover through a bearing support, a valve rod support and a sealing pressing cover; and the lower end pf the valve cover is firmly fixed with the upper end of the valve body through a flange and a bolt. Compared with the prior art, the expanding gate valve of the utility model has no friction during the opening and closing of the valve plate and the valve body and is characterized in a reasonable design, easy processing, flexible opening and closing, convenient operation and utilization, reliable sealing, long service life and reducing the problems of gas and water supply cut on the circuit due to valve repairing or replacement; thus the utility model has a great value for spreading and utilization.

Description

Expansion sluice valve

1, technical field

The utility model relates to a kind of pipeline valve, specifically a kind of expansion sluice valve.

2, technical background

The valve of known technology mainly divides gate valve, stopcock and ball valve etc., and the in use existing deficiency of above-mentioned pipeline valve is that sealing is poor, working life is low, opens and closes dumb etc.The oil gas in town water supply, air feed, oil field carry and the equipment of oil-refining chemical enterprise in, maintenance and replacing valve just mean stopping production, especially chemical enterprise, in order to guarantee the production safety operation, low-quality valve not only will be wasted a large amount of financial resources, manpower also can have influence on the safety of production and cities and towns people's normal life.At present, the expansion sluice valve of high leak tightness, the wearing and tearing of nothing machinery, long service life does not also have bibliographical information and product to ask the city.

3, goal of the invention

The purpose of this utility model provides a kind of good airproof performance, fluid medium fast shut-off, opening-closing process does not have friction, open and close flexibly, long service life, easy to operate expansion sluice valve.

The purpose of this utility model realizes in the following manner, the centre of spool is provided with screw thread and valve rod joins, spool moves up and down by the rotation of valve rod, the vertical section of spool is taper, pass through the valve plate on dovetail groove connecting band inclined-plane in the both sides of spool, be inlaid with seal ring on the face that the inwall of valve plate and valve body joins.The working principle of closing valve during use is: when valve rod rotates when promoting the spool band and valve plate and move down into the bottom of valve body, section is that the spool of taper just begins to promote valve plate and moves horizontally to valve interior wall and draw close, and the import and export that compress valve body are closed.When driving valve, rotary valve rod, valve rod drive on the spool and move, and valve plate prolongs the inclined-plane that joins with spool by dovetail groove to be made level earlier and shrink and separate with valve body, moves in the continuation along with spool, and valve plate and spool one the same moving all connect the import and export of valve body.

Accompanying drawing 1 is the overall structure schematic representation of expansion sluice valve;

Accompanying drawing 2 is that the A-A of expansion sluice valve valve body, spool and valve plate is to the cross-sectional configuration schematic representation;

4, description of drawings

Explain below with reference to Figure of description expansion sluice valve of the present utility model being done.

Expansion sluice valve of the present utility model, shown in the mouth tuft ferment, 2, its structure is by valve body 3, valve gap 9, valve rod 7, support 10, protects frame 11, spool 5, valve plate 4 and constitute, spool 5 and valve plate 4 are connected by the dovetail structure and are arranged among valve body 3 and the valve gap 9, the lower end of valve rod 7 and spool 5 join by screw thread, the top of valve rod 7 joins by support 10, the top of protecting frame 11 and valve gap 9, and the upper end of the lower end of valve gap 9 and valve body 3 by flange with bolton together.

The centre of spool 5 has perpendicular screwed hole, the both sides of spool 5 are processed with two narrow down wide inclined-planes, the dovetail groove that the inclined-plane is provided with on dovetail and the valve plate 4 joins identical, valve plate 4 is provided with O-ring seal 17 with the face that valve body 3 joins, be provided with the elasticity shrinking device of being made up of spring 6, spring housing and spring capping on the top of spool 5 and valve plate 4, the lower end of spool 5 is provided with valve plate holder lid 16.

At the bottom of the bottom of valve body 3 is provided with valve 2,2 centre is provided with the bolt 1 that discharges water at the bottom of the valve.5, mode of execution

Its processing and fabricating of expansion sluice valve of the present utility model is very simple and convenient, shown in the by specification accompanying drawing routinely the process for machining processing and fabricating of valve get final product.

Expansion sluice valve of the present utility model uses operation also very simple and convenient, during use, by the handwheel rotation valve rod, the screw thread on the screw thread of valve rod lower end and spool top joins and drives the spool oscilaltion, when the needs Open valve, rotate counterclockwise handwheel, spool moves up, and valve plate shrinks to the centre along the inverted cone inclined-plane of spool both sides and separates with the inwall of valve body, valve plate leaves valve port, along with moving on the spool, valve plate is in company with the top that moves to valve body on the spool, and valve just is in open mode; When closing, clockwise rotate handwheel, spool drives valve plate and moves down, and when valve plate moved to the valve body bottom, valve plate was stifled tight with the turnover sealing valve port on the valve body under the thrust of inverted cone spool expands.

Expansion sluice valve of the present utility model can be used for various in the conveying and the cut-out of flowing medium under the low temperature because this valve is in opening-closing process, there are not mechanical friction in valve plate and valve body, thereby be more than ten times of common valve working life.

Expansion sluice valve of the present utility model is compared with existing technology, have reasonable in design, be easy to processing, open Close flexible, easy to operate, sealing is reliable, owing to do not have friction between valve plate and the valve body, thereby do not exist The valve plate wear phenomenon of tradition gate valve can make greatly prolong the service life of valve, can reduce because of maintenance replacing valve Door and the characteristics such as many troubles such as pipeline is stopped the supple of gas or steam cut off the water, thereby, have good value for applications.

Except the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1. expansion sluice valve, comprise valve body 3, valve gap 9, valve rod 7, support 10, protect frame 11, spool 5, valve plate 4, it is characterized in that spool 5 and valve plate 4 are connected by the dovetail structure is arranged among valve body 3 and the valve gap 9, the lower end of valve rod 7 and spool 5 join by screw thread, the top of valve rod 7 by support 10, bearing 15, protect frame 11 and be connected with bolt with the top of valve gap 9, the upper end of the lower end of valve gap 9 and valve body 3 is by flange with bolton together.

2. expansion sluice valve according to claim 1, the centre that it is characterized in that spool 5 has perpendicular screwed hole, the both sides of spool 5 are processed with two narrow down wide inclined-planes, the dovetail groove that the inclined-plane is provided with on dovetail and the valve plate 4 joins identical, valve plate 4 is provided with O-ring seal 17 with the face that valve body 3 joins, be provided with the elasticity shrinking device of forming by spring 6 and spring housing and spring capping on the top of spool 5 and valve plate 4, be provided with valve plate holder lid 16 in the lower end of spool 5.

3. expansion sluice valve according to claim 1 is characterized in that at the bottom of the bottom of valve body 3 is provided with valve 2, and 2 centre is provided with the bolt 1 that discharges water at the bottom of the valve.