CN204900898U - Improved generation high -pressure mud plate valve - Google Patents

Abstract

The utility model relates to a follow -on high -pressure mud wafer valve contains valve body, flashboard, disk seat, wave spring and rectangle sealing washer, flashboard embedding between two disk seats, its characterized in that: the valve body is equipped with a spring cavity on supporting and leaning on the plane of disk seat, and the wave spring is put into in the spring cavity, the rectangle sealing washer sets up between valve body and disk seat, the closing spring chamber of just making perfect. Compare with current high -pressure mud wafer valve, the utility model discloses an useful contribution is: through the spring cavity of the totally closed wave spring of rectangle sealing washer, make in the spring cavity of mud, the unable entering wave spring of solid particle to make the wave spring under noiseless state, continuously keep elasticity, the exit two way seal of intact realization valve. The utility model has the advantages of reasonable in design, simple structure, good, the long service life of sealing performance.

Description

A kind of improved high-voltage mud plate valve

Technical field

The utility model relates to a kind of high-pressure slurry plate valve, particularly relates to a kind ofly can prevent mud impurity from depositing or mat and affect the improved high-voltage mud plate valve of valve seat pretightening force.

Background technique

High-pressure slurry plate valve is mainly used in, on the pipeline of oil drilling industry conveying high-pressure mud, making closed circuit device.As shown in Figure 1, flashboard b wedges between two valve seat c conventional high-pressure slurry plate valve structure, and closed flow, for closing, opens runner for opening.Flashboard b is fitted tightly to form two plane sealings in order to make two valve seat c, usually wave spring d is set between the non-tight plane and valve body a of valve seat c, and form floating valve seat construction by wave spring d applying pretightening force, thus realize the inlet-outlet bidirectional sealing of valve.There is following technical deficiency in actual use in this high-pressure slurry plate valve: easily embeds solid sand grains in the peak valley gap of 1, wave spring d, make wave spring d lose function; 2, accumulation of mud is in the peak valley gap of wave spring d, seriously has influence on the elastic returning of spring.Above-mentioned technical deficiency is lost directly causing the sealability wound of valve, and cause serious leak, its amount of maintenance is large, and working life is short.

Summary of the invention

The purpose of this utility model is to provide a kind of follow-on high-pressure slurry flap type, so as to making up existing high-pressure slurry flap type technical deficiency as described in the background art.

To achieve these goals, the utility model takes following technological scheme to implement: a kind of follow-on high-pressure slurry flap type, comprise valve body, flashboard, valve seat, wave spring and rectangular seal, described flashboard is embedded between two valve seats, it is characterized in that:

Described valve body is provided with a spring chamber against the plane of valve seat, and wave spring is inserted in spring chamber;

Described rectangular seal is arranged between valve body and valve seat, and totally-enclosed spring chamber.

Compared with existing high-pressure slurry flap type, favorable attributes of the present utility model is: by the spring chamber of the totally-enclosed wave spring of rectangular seal, make mud, solid particle cannot enter in the spring chamber of wave spring, thus make wave spring under glitch-free state, continue to keep elastic force, the intact inlet-outlet bidirectional sealing realizing valve.

The utility model has that reasonable in design, structure is simple, the advantage of good seal performance, long service life.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation of existing high-pressure slurry flap type;

Accompanying drawing 2 is structural representation of the present utility model;

Accompanying drawing 3 is that in accompanying drawing 2, I part-structure shifts out enlarged view.

In fig 2: 1 valve body, 2 flashboards, 3 valve seats, 4 wave springs, 5 rectangular seals.

Embodiment

Below in conjunction with accompanying drawing, explanation is further explained to the utility model:

As shown in accompanying drawing 2,3, flashboard 2 is embedded between two valve seats; Valve body 1 is provided with a circumferential circular groove against the plane of valve seat 3; The non-tight plane of valve seat 3 is provided with a circumferential ring-shaped step, and the step plane of its projection embeds in the circumferential circular groove on valve body 1, forms the spring chamber of wave spring 4; In wave spring 4 inserting spring chamber; Rectangular seal 5 is arranged between the circumferential circular groove notch inner side plane on the recessed step surface of valve seat 3 and valve body 1, plays the effect of totally-enclosed spring chamber.。

The utility model is by the spring chamber of the totally-enclosed wave spring 4 of rectangular seal 5, make mud, solid particle cannot enter in the spring chamber of wave spring 4, thus make wave spring 4 under glitch-free state, continue to keep elastic force, the intact inlet-outlet bidirectional sealing realizing valve.

Claims (1)

1. a follow-on high-pressure slurry flap type, comprises valve body, flashboard, valve seat, wave spring and rectangular seal, and described flashboard is embedded between two valve seats, it is characterized in that:

Described valve body is provided with a spring chamber against the plane of valve seat, and wave spring is inserted in spring chamber;

Described rectangular seal is arranged between valve body and valve seat, and totally-enclosed spring chamber.