CN203784385U

CN203784385U - Checkvalve

Info

Publication number: CN203784385U
Application number: CN201420194282.9U
Authority: CN
Inventors: 徐营; 竭国娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-12
Filing date: 2014-04-12
Publication date: 2014-08-20
Anticipated expiration: 2024-04-12

Abstract

The utility model relates to a multi-valve-clackquick-closing check valve and is designed mainly for solving the problems that existing quick-closing check valves are large in resistance and large in noise and multi-valve-clack check valves cannot be closed quickly. The check valve comprises a valve body, wherein the valve body consists of a left casing and a right casing, a water inlet is arranged on the left casing, and a water outlet is arranged on the right casing; an inner valve body fixing plate is arranged in the left casing, the periphery of the inner valve body fixing plate and the inner wall of the left casing are welded and sealed, a plurality of water via openings are formed in the inner valve body fixing plate, a cylinder is fixed on one side, which faces towards the right casing, of each water via opening, a guide hole is formed in the center of a support connected onto each cylinder, one valve clack is correspondingly arranged on each water via opening, guide shafts perpendicular to the valve clacks are fixed in centers of the valve clacks, mounted in the guide holes in the centers of the supports and sleeved with spiral springs, one end of each spiral spring is fixed on each support, and the other end of each spiral spring is propped against each valve clack. The spiral springs mounted on the valve clacks are different in elasticity. The multi-valve-clackquick-closing check valve has the advantage that the valve clacks can be closed sequentially, so that the noise is low and the water hammer is small.

Description

A kind of safety check

Technical field:

The utility model relates to a kind of safety check, particularly relates to a kind of quick-closure check valve of many flaps.Can be used for the pipe-line system to, draining and oil, chemical industry, power station, metallurgy etc.

Background technique:

Existing quick-closure check valve is all single valve clack or Double-clack, and these two kinds of valves are only applicable to small-bore pipeline, as for large diameter pipeline, can become heavy because flap strengthens thickening, and resistance is large, and noise is large; Existing many flaps safety check (referring to the above flaps of 3 or 3) is all rotary-open type, can not quick closedown, and be to close when backwater flows backwards, there is a larger water hammer generation, pipe-line system is had to destruction, and noise is large.

Summary of the invention:

Technical problem to be solved in the utility model is to provide a kind of various bore pipelines that are suitable for, and closes soon, and noise is little, the safety check that water hammer is little.

Above-mentioned purpose is achieved in that it comprises valve body, and valve body is comprised of left and right (or claiming upper and lower) two housings, and two housings are connected and fixed by flange, have water intake on left shell, have water outlet on right shell body, on a left side, in near left shell right two housings joint, be provided with inner valve body fixed plate, inner valve body fixed plate around with left shell inwall welded seal, inner valve body fixed plate is provided with several and crosses the mouth of a river, each is crossed gate surface and fixes a cylindrical shell to right shell body one side, on cylindrical shell, be connected with support, there is pilot hole in support central authorities, corresponding each cross and on the mouth of a river, have a flap, the central authorities of flap are fixed with the axis of guide perpendicular to flap, the axis of guide is contained in the pilot hole of support central authorities, the axis of guide can slide in the pilot hole of support central authorities, helical spring is sleeved on axis of guide outside, helical spring one end is fixed on support, the other end withstands on flap.

In order to allow each flap not be to close simultaneously, but close successively, the helical spring elastic force of installing on each flap is different, as the helical spring elastic force of installing on each flap can be respectively 5 kilograms, 6 kilograms, 7 kilograms etc.

The utility model has the advantages that: owing to can determining according to the size of safety check bore the quantity of flap, volume, the weight of single flap are less, and can close successively, but not close, so noise is little, the water hammer of generation is little; simultaneously due to closing not by backwater of flap, but control with spring, so close soon, before arriving, backwater just closed.

Accompanying drawing explanation:

Fig. 1 is main TV structure schematic diagram of the present utility model;

Fig. 2 is side-looking structural representation of the present utility model.

Embodiment:

With reference to Fig. 1,2, it comprises valve body, and valve body is comprised of left and right (or claiming upper and lower) two housings, and two housings are connected and fixed by flange, on left shell 1, have water intake, on right shell body 2, have water outlet, on a left side, in near left shell right two housings joint, be provided with inner valve body fixed plate 3, inner valve body fixed plate around with left shell inwall welded seal, inner valve body fixed plate is provided with several and crosses the mouth of a river 4, each is crossed gate surface and fixes a cylindrical shell 5 to right shell body one side, on cylindrical shell, be connected with support 6, there is pilot hole 7 in support central authorities, corresponding each cross and on the mouth of a river, have a flap 8, the central authorities of flap are fixed with the axis of guide 9 perpendicular to flap, the axis of guide is contained in the pilot hole of support central authorities, the axis of guide can slide in the pilot hole of support central authorities, helical spring 10 is sleeved on axis of guide outside, helical spring one end is fixed on support, the other end withstands on flap.

In order to allow each flap not be to close simultaneously, but close successively, the elastic force of the helical spring 10 of installing on each flap is different, as the helical spring elastic force of installing on each flap can be respectively 5 kilograms, 6 kilograms, 7 kilograms etc.

Claims

1. a safety check, comprises valve body, and valve body is comprised of left and right two housings, and two housings are connected and fixed by flange, and left shell has water intake on (1), and right shell body has water outlet on (2), on a left side, in near left shell right two housings joint, be provided with inner valve body fixed plate (3), inner valve body fixed plate around with left shell inwall welded seal, inner valve body fixed plate is provided with several and crosses the mouth of a river (4), it is characterized in that: each is crossed gate surface and fixes a cylindrical shell (5) to right shell body one side, on cylindrical shell, be connected with support (6), there is pilot hole (7) in support central authorities, corresponding each cross and on the mouth of a river, have a flap (8), the central authorities of flap are fixed with the axis of guide (9) perpendicular to flap, the axis of guide is contained in the pilot hole of support central authorities, the axis of guide can slide in the pilot hole of support central authorities, helical spring (10) is sleeved on axis of guide outside, helical spring one end is fixed on support, the other end withstands on flap.

2. according to safety check claimed in claim 1, it is characterized in that: the elastic force of the helical spring of installing on each flap (10) is different.