CN102954256A

CN102954256A - Angle check valve

Info

Publication number: CN102954256A
Application number: CN 201110243310
Authority: CN
Inventors: 张雄飞; 刘汉钦
Original assignee: SHANGHAI KAI-GONG VALVE Co Ltd
Current assignee: SHANGHAI KAI-GONG VALVE Co Ltd
Priority date: 2011-08-23
Filing date: 2011-08-23
Publication date: 2013-03-06

Abstract

The invention relates to an angle check valve which comprises a valve body, a bonnet, a valve clack, a valve seat and a spring. The top of the valve body is connected with the bonnet, the valve clack is arranged in a cavity formed by the valve body and the bonnet, the valve seat is arranged in the valve body, and the spring is arranged on the back of the valve clack. The angle check valve further comprises four guide rails respectively distributed on the four sides of the valve clack and fixed in the valve body, the top of the valve clack is positioned by the bonnet, the bottom of the valve clack is centered by the guide rails, and the valve clack is capable of moving freely among the guide rails. Compared with the prior art, the angle check valve has the advantages of wide application scope, stable action, good tightness, convenience in use and the like.

Description

A kind of angle type check valve

Technical field

The present invention relates to a kind of valve, especially relate to a kind of angle type check valve.

Background technique

Safety check has another name called check valve, one-way valve or one-way valve, is used for being used as to prevent medium counter flow on the pressure piping; Generally be used in the delivery side of pump place, when termination of pumping, can flow backwards to prevent medium by automatic-closing valve.

At present common safety check has three kinds of Lift check valve, Swing check valve and Vertical Lift Check Valves, and their configurations are respectively deposited again defective, can only horizontal (level) installs and can not use by at right angle setting such as rise-fall type and Swing check valve.Vertical Lift Check Valves can only at right angle setting and can not level be installed and used.Produce thus the various in style of safety check, give and to design, to select, purchase and use brings inconvenience.

Summary of the invention

Purpose of the present invention be exactly provide a kind of in order to overcome the defective that above-mentioned prior art exists and use extensively, stable action, angle type check valve that airtight performance is good, easy to use.

Purpose of the present invention can be achieved through the following technical solutions: a kind of angle type check valve, comprise valve body, valve gap, flap, valve seat and spring, described valve body top connects valve gap, described flap is arranged in the cavity of valve body and valve gap composition, be provided with valve seat in the valve body, described spring is arranged on the flap back side, it is characterized in that, also comprise at least four guide rails, each guide rail is scattered in around the flap, and is fixed in the valve body, and described flap top is located by valve gap, the bottom is by the guide rail righting, and flap is freely movable between guide rail.

Described guide rail and valve body integral type arrange.

Described valve body and valve gap are bolted.

Described flap is T-shaped shape structure, and its underpart is hemisphere, and top is cylindrical, and the flap bottom is freely movable between guide rail, and bonnet lower is inserted on flap top, by valve gap it is positioned.

Compared with prior art, the present invention has the following advantages:

One, using scope is wider: the flap of this valve can install and use in any position valve by this novel structure of guide rail righting, has broken the narrow limitation that conventional safety check is subjected to the mounting point restriction, has enlarged using scope;

Two, stable action, impact little: flap is owing to the centralizing function of valve gap and guide rail, and valve is shockproof, noise free when operation, has reduced the impact to valve base sealing,

Three, airtight performance is good: under the effect of spring, and flap quick closedown, long service life.

Four, easy to use: installation, maintenance and the replacing of the more convenient valve of right-angle type structure.

Description of drawings

Fig. 1 is closure of check ring status architecture schematic diagram of the present invention;

Fig. 2 is safety check opening state structural representation of the present invention;

Fig. 3 is the A-A view of Fig. 1.

Embodiment

The present invention is described in detail below in conjunction with the drawings and specific embodiments.

Embodiment

As Figure 1-3, a kind of angle type check valve, comprise valve body 1, valve seat 2, flap 3, spring 4, valve gap 5, guide rail 6, described valve body 1 top is bolted valve gap 5 and is sealed by seal ring, only need lay down bolt, take away valve gap, need not any instrument and just can take out spool, can realize on-bne repair.Be provided with valve seat 2 in the valve body 1, during valve closing, flap 3 is positioned on the valve seat 2.

Described flap 3 is arranged in the cavity of valve body 1 and valve gap 5 compositions, and described spring 4 is arranged on flap 2 back sides with auxiliary flap quick closedown.

Also comprise at least four guide rails 6 (the present embodiment middle guide arranges 4), each guide rail is scattered in around the flap 3, and be fixed in the valve body 1, described flap 3 is T-shaped shape structure, its underpart is hemisphere, and top is cylindrical, and flap 3 bottoms are by guide rail 6 rightings, flap 3 is up and down on 6 on guide rail, and never deviation can be not stuck.So this valve can level be installed and used to the left or to the right, also can install and use up or down, southeastward any one direction of northwest or any one angle are installed and used after lying low.Valve gap 5 bottoms are inserted on flap 3 tops, by valve gap 5 it are positioned.

The curved design of the stream of arc line type makes medium along its gravity flow, and resistance is little, avoids medium 90 degree right angle zig zags, produces whirlpool and build-up of pressure loss.

When acting on flap 3 bottom from the medium in the pipeline, when pressure during greater than flap 3 deadweight and spring 4 active forces and back pressure, flap 3 breaks away from valve seats 2 valves and automatically opens (seeing schematic diagram 2).Otherwise, when back pressure during greater than malleation, under the effect of flap 3 by the righting of guide rail 6 and valve gap 5 and spring 4, flap 3 and valve seat 2 momentary engagement, valve autoshutdown (seeing schematic diagram 1).

Claims

1. an angle type check valve comprises valve body, valve gap, flap, valve seat and spring, and described valve body top connects valve gap, described flap is arranged in the cavity of valve body and valve gap composition, be provided with valve seat in the valve body, described spring is arranged on the flap back side, it is characterized in that, also comprise at least four guide rails, each guide rail is scattered in around the flap, and is fixed in the valve body, and described flap top is located by valve gap, the bottom is by the guide rail righting, and flap is freely movable between guide rail.

2. a kind of angle type check valve according to claim 1 is characterized in that, described guide rail and valve body integral type arrange.

3. a kind of angle type check valve according to claim 1 is characterized in that, described valve body and valve gap are bolted.

4. a kind of angle type check valve according to claim 1 is characterized in that, described flap is T-shaped shape structure, its underpart is hemisphere, and top is cylindrical, and the flap bottom is freely movable between guide rail, bonnet lower is inserted on flap top, by valve gap it is positioned.