CN88200066U - Clamp type spring check valve - Google Patents

Abstract

The utility model relates to a clamp type spring check valve, which is an important valve used for automatically preventing the countercurrent flow of medium in industrial pipes. The utility model is characterized in that the existing sealing that the valve core of check valve lands back to valve seat depending on the weight of a valve core is improved into the sealing that the valve clack lands back to valve seat by the pressure force of a spring; the countercurrent flow of medium in industrial pipes can be effectively prevented. The utility model can be used for industrial pipes of low pressure, medium pressure, and high pressure such as heat supply network, chemical industry, petroleum, water, etc. The utility model is used for preventing the countercurrent flow of medium in the industrial pipes.

Description

Clamp type spring check valve

The utility model belongs to the device of automatic prevention industrial pipeline medium reverse flow.

Existing rise-fall type, Swing check valve are to be made of valve body, spool or flap, valve seat, loam cake that: two ends have a flange plate.This safety check stops on pipeline in the medium reverse flow work automatically, by spool or the weight of the flap own valve seat that lands back, thereby plays the effect of automatic prevention pipeline medium reverse flow.This safety check is because of slow movement, through the pressure generation impact or the spring down of the counter-flow media of being everlasting.Send the strong vibration and the sound; Under the bias current of medium, spool or flap and valve base chamber easily produce eccentric wear; And be strict with and press the horizontal position installation, cause sealing relatively poor thus.

The utility model for: change original safety check by spool, flap deadweight land back and closes seal operation, adopt the pressure compression flap that leans on spring to return seat automatically and close sealing, and there are not screw thread or flange to connect and valve gap structure partly, be clamped in during installation between the adjacent two ends piping flange, the line with rubber asbestos washer, promptly play the effect of automatic prevention pipeline medium reverse flow, and can on any position angle, install, can be better than original all kinds of safety check, only be equivalent to 20% of original all kinds of safety check when material and worker.

The utility model is realized by the following method.Having made in valve body and having contacted only face with the corresponding sealing of flap is valve seat, and flap is housed in valve body, pressure spring, flap and pressure spring are set above the flap limit position and stroke with saddle, the fixedly springhole ring washer of saddle is set on saddle, at valve body arranged outside location piece, breach is by the clamping bolt position of standard over against piping flange.

The utility model stops in the work of medium reverse flow in industrial pipeline automatically: medium is when forward flow, because the pressure of medium surpasses the due to pressure of flap compression spring, the flap pressurized is opened, and medium enters.

When the forward medium stopped to flow, this model utility safety check was tending towards average moment at the two ends pressure medium, under the effect of spring, flap rapidly and reposefully with the valve seat closure, thereby the reverse flow of automatic cut-off medium.

The utility model is described further by following accompanying drawing.

Accompanying drawing is the sectional arrangement drawing of clipping spring-loaded check valve.

Among the figure, (1) is that valve body, (2) are valve body outer location piece for saddle, (5) hole with elastic scheibe, (6) for spring, (4) for flap, (3).

During this safety check work, medium (B) pressurized is made forward flow, and this pressure plays the pressure of super valve upper spring, and the flap pressurized is opened, and medium flows into.

When the forward medium stopped to flow, this safety check was tending towards average moment at the two ends pressure medium, the effect lower Disc of spring rapidly and reposefully with the valve seat closure, thereby automatic cut-off the reverse flow of medium (A).

Thus, this safety check promptly begins the prevention medium reverse flow work of itself automatically, reposefully.

The utility model is because due to the above-mentioned operation principle, so that the automatic prevention medium of check-valves is swung to mobile work is very effective. And owing to parts such as two end flanges of having cancelled original all kinds of check-valves, valve gaps, so that this valve manufacturing cost descends significantly, the installation site is random, and operation is greatly easy, more is conducive to use on the industrial pipeline such as chemical industry, boiler, heat supply network, oil of all kinds of basic, normal, high pressures.

Claims (2)

1, a kind of clipping spring-loaded check valve that is used for stoping automatically the reverse flow of industrial pipeline medium, be by valve body, flap, spring, saddle, the hole elastic scheibe, the valve body fixed plate constitutes, it is characterized in that: in valve body, made with the corresponding sealing contact surface of flap be valve seat, and flap is housed in valve body, pressure spring is set above the flap, flap and pressure spring limit position and stroke with saddle, the fixedly springhole ring washer of saddle is set on saddle, at valve body arranged outside location piece, breach is by the clamping bolt position of standard over against piping flange.

2, clipping safety check according to claim 1 is characterized in that: the valve body two ends are provided with flange and body and the loam cake that is connected usefulness with pipeline.

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