Adjustable type mute non-return valve

Abstract

The invention discloses an adjustable type mute non-return valve. The adjustable type mute non-return valve comprises a valve seat, a first valve clack, second valve clacks, an adjusting spring, a slide shaft sleeve, a guide body, a valve body, an adjusting spring and an adjusting rod, wherein the valve seat is in the shape of a ring pillar; an inlet and outlet of the valve is formed in the crosssection of the ring pillar; a runner is formed in the axis of the ring pillar; the runner in the valve body is equipped with a neck part; the neck part is equipped with the ring-shaped valve seat andthe first valve clack; the first valve clack is a runner which is formed by spoke shaped structures and is uniform in gap; a shaft base is arranged on the spoke-shaped center; a fixed shaft is mountedon the shaft base; the fixed shaft is equipped with the slide shaft sleeve; the guide body and the second valve clacks are fixedly arranged on the slide shaft sleeve; the slide shaft sleeve slides onthe fixed shaft; the position, on the edge of the slide shaft sleeve, of the shaft base is equipped with the regulating spring, and the slide position of the slide shaft sleeve is connected; the guide body is in the shape of a plumb, and is positioned on the expanded part at the outer side of the neck part; the longitudinal section of the guide body is in the shape of a quadrihedron; an inlet ofthe valve is formed in one side of the bottom side of the quadrihedron; an outlet of the valve is formed in one side of the tip end of the quadrihedron; and the corner parts of the quadrihedron are arc-shaped.

Description

Technical field: [0001] The invention relates to a check valve, in particular to an adjustable silent check valve suitable for use in petroleum, chemical industry, chemical fertilizer, pesticide, chemical fiber, papermaking, sugar, food, power station and other industrial sectors. Background technique: [0002] With the rapid development of my country's national economy, in my country's petroleum, chemical, fertilizer, pesticide, chemical fiber, papermaking, sugar, food, power station, and other industrial sectors, as well as pipeline control systems in agriculture and even living facilities, a variety of specifications are used. Valves are used to control the system, and more and more valves are needed to control the slurry flow pipeline, especially the water supply and drainage, fire protection, and HVAC systems, which use various specifications of check valves to prevent medium backflow. Traditional check valves are not adjustable, inconvenient to use, and costly to mainta...

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