CN2714910Y

CN2714910Y - Column valve

Info

Publication number: CN2714910Y
Application number: CN 200420081152
Authority: CN
Inventors: 郭建国; 卞大德
Original assignee: SHANGHAI KAIST HIGH-MIDDLE PRESSURE VALVES Co Ltd
Current assignee: SHANGHAI KAIST HIGH-MIDDLE PRESSURE VALVES Co Ltd
Priority date: 2004-07-27
Filing date: 2004-07-27
Publication date: 2005-08-03
Anticipated expiration: 2014-07-27

Abstract

The utility model relates to a valve structure, in particular to a column valve which is mainly used in the industries of oilfield, chemical industry, medicine, vessel, foodstuff, etc. The utility model comprises triple-valve bodies, valve bases, valve cores and valve rods; wherein, valve bodies are provided with the split triple-valve bodies; the right and the left valve bodies are connected by a fastener; columnar valve cores are arranged in the valve bodies; flow rate holes in the valve cores are in L shapes; both sides of the valve core are respectively provided with a circular valve base; the connection of the right and the left valve body bases are provided with a base rings and elastic compression elements. The preparing process of the valve cores of the utility model is simple and convenient, and the utility model is anti-corrosive; the valve bases and the valve cores keep a definite pretightening force all along, so two-sided seal is formed reliably; the column valve can directly make sealing compensation by fasteners on the valve bodies; when the fasteners are adjusted, the pretightening force of the right and the left valve bases can be increased, so the service life of the valve is lengthened. The utility model is a novel column valve which can satisfy 32MPa pressure and a 500 mm diameter.

Description

A kind of barrel valve

Technical field

The utility model relates to a kind of valve mechanism, particularly a kind of barrel valve.Be mainly used in the industries such as oil, chemical industry, medicine, boats and ships, food.

Background technique

At present, floating ball valve, stopcock, plunger valve are arranged on the market, and wherein each valve all there is its unique one side.The floating ball valve hoisting capacity is little, and fluid resistance is little, and structure is simpler, volume is less, and its shortcoming is single face sealing, promotes ball and crush seal face seals by pressure medium, the sealability instability can not be high pressure resistant, and the floating ball valve wirking pressure is generally all wanted≤2.5MPa; Stopcock is simple to operate, and volume is little, its shortcoming be used for seal request not high, the occasion that pressure is low; Plunger valve utilizes the elevation cylinder face to seal, and is used in the stop valve class, but can't come Open valve by rotary seal face.

In sum, need a kind of function class of exploitation like floating ball valve, but sealing principle is different with it with structure, and spool bother unlike processing ball, again can be high pressure resistant and the novel valve of dual face seals.

Summary of the invention

Goal of the invention of the present utility model is: provide a kind of spool easy to process, dual face seals, and reliable sealing barrel valve.

Technical solution of the present utility model is, a kind of barrel valve, comprise three way valve, valve seat, spool and valve rod, valve rod and spool join, wherein, be provided with the separable type three way valve, left and right sides valve body connects by fastening piece, and the cylinder type spool is located in the valve body, and metering orifice is the L type in the spool, a circular valve seat is respectively established in the spool both sides, and valve seat joint, the left and right sides is provided with seat ring and elastic compression part.Because of the intervention of elastic compression part, a kind of valve arrangement of dual face seals is provided, in addition, the cylinder type spool is easy to process, and it is little that the utility model realizes having hoisting capacity, and fluid resistance is little, the better simply advantage of structure, sealability is stable, and is high pressure resistant.

Wherein, two parts about described valve body is divided into, left valve barrel has two through holes, right valve barrel has a through hole, the L type through hole of spool is corresponding with the through-hole aperture of left and right valve body, and left valve barrel is connected with Sealing elasticity by fastening piece with right valve barrel, and described right valve seat is located on the seat ring.

Perhaps, right valve seat is set in the seat ring.

Wherein, described spool adopts cylindrical, directly drives a valve rod locating slot on the cylinder plane.This cylinder type spool processing is simple, convenient.

Wherein, described elastic compression part is a kind of in dish spring, the pressure spring.

On the such scheme basis, it is on the seat ring side a dishful of spring to be arranged that the elasticity between the valve body of the described left and right sides connects, and is used for producing the pretightening force effect, and there is a sealing gasket at valve rod back seal place, can effectively form back seal.

On the such scheme basis, described left valve barrel, right valve barrel connect by bolt, and Sealing is an O type circle between its two valve body.

Wherein, described spool adopts cylindrical, directly drives a valve rod locating slot on the cylinder plane.Make its processing simple.

The utility model has the advantages that: 1, spool processing is simple, convenient; 2, owing to employing dual face seals principle, good seal performance, when valve was in opening state, valve seat and cylndrical surface were in sealing state all the time, and no medium enters valve body, like this valve body and spool is not had impact force, non-corrosiveness; 3, there are seat ring and compression piece in right sealing surface place, make valve seat be in pretightening force with spool all the time, thereby form dual face seals, and sealing is reliable; After valve has certain wearing and tearing because of long-time use, can dismantle valve, directly carry out sealing compensation, can increase the pretightening force of left and right sides valve seat behind the adjusting fastening piece, thereby prolong the working life of valve by the fastening piece on the valve body.Exactly because this special structure just can reach the double-sealing principle, can satisfy the novel barrel valve of 32MPa pressure, 500mm latus rectum.

Description of drawings

Accompanying drawing is a structural representation of the present utility model

The utility model barrel valve is the dual face seals structure of the adjustable sealing pretightening force of Three way type, and its function is the medium of intercepting respectively that continues to flow.Below in conjunction with accompanying drawing model utility is described in further detail:

Embodiment

As scheme shown in the structural representation of the present utility model, the utility model structure: a kind of barrel valve, comprise three way valve 1, valve seat 6, spool 5 and valve rod 2, wherein, be provided with the separable type three way valve, left and right

sides valve body

11,12 connects by fastening piece such as bolt 3, cylinder type spool 5 is located in the valve body 1, metering orifice 51 is the L type in the spool 5, a

circular valve seat

61,62 is respectively established in the spool both sides,

valve block

11,12 joints in the left and right sides are provided with seat ring 4 and elastic compression part, drive a valve rod locating slot 52 on spool 5 cylinder planes.

In the present embodiment, two valve seals rely on O type circle 10 to do radial seal.Be provided with cylinder type spool 5 in the valve body, the and arranged on left and right sides of spool respectively is provided with a

circular valve seat

61,62, right valve seat 6 is embedded in the seat ring 4, seat ring 4 sealings rely on O type circle 8 to do radial seal, there is an elastic compression part--dish spring 7 on seat ring 4 sides, be used for producing the pretightening force effect, there is a sealing gasket 9 at valve rod 2 back seal places, can effectively form the example sealing.

The utility model function is achieved in that

Inner body assembles, and left valve barrel 11 begins to be connected with right valve barrel 12, and by bolting on 3, at this moment dish spring 7 produces pretightening force, drives seat ring 4 promotion valve seats 62 and presses to the cylinder type spool, presses to left side valve seat 61 simultaneously, thereby reaches dual face seals.This moment left valve barrel 11 and right valve barrel 12 junction points preset clearance all the time, by the time valve seat long-time use certain wearing and tearing are arranged after, can bolt on and 3 carry out the effective seal compensation, prolong the working life of valve;

Shown position is the circulation of B place, and A is in normal open walk, is closed condition when clockwise rotating 90 degree, C place circulation when turning 90 degrees clockwise again, and this moment, the B place closed.When valve was in closed condition, up time turn 90 degrees the C place and opens, contrary turning 90 degrees to opening at the B place.By commutation, the left and right switching intercepting medium that can not stop.

Claims

1, a kind of barrel valve, comprise three way valve, valve seat, spool and valve rod, it is characterized in that being provided with the separable type three way valve, left and right sides valve body (11), (12) connect by fastening piece, and cylinder type spool (5) is located in the valve body (1), and metering orifice (51) is the L type in the spool, a circular valve seat (61), (62) are respectively established in the spool both sides, and left and right sides valve block (11), (12) joint are provided with seat ring (4) and elastic compression part.

2, barrel valve according to claim 1, it is characterized in that: described left valve barrel (11) has two through holes (111), (112), right valve barrel (12) has a through hole (121), wherein, the L type through hole (51) of spool is corresponding with the through-hole aperture of left and right sides valve body (11), (12), and described right valve seat (62) is located on the seat ring (4).

3, barrel valve according to claim 1 and 2 is characterized in that: described elastic compression part is a kind of in dish spring, the pressing spring.

4, barrel valve according to claim 3 is characterized in that it is to have a dishful of spring (7), valve rod (2) back seal place that one sealing gasket (9) that can effectively form back seal is arranged in that seat ring (4) is other that elasticity between left and right sides valve body (11), (12) connects.

5, barrel valve according to claim 1 and 2 is characterized in that described left valve barrel (11), right valve barrel (12) connect by bolt (3), and Sealing is an O type circle between its two valve body (11), (12).

6, barrel valve according to claim 1 is characterized in that described right valve seat (62) is set in the seat ring (4).

7, barrel valve according to claim 1, it is cylindrical to it is characterized in that described spool adopts, and directly drives a valve rod locating slot (52) on the cylinder plane.