Rotary interception flexible flap valve

Abstract

The invention relates to a rotary interception flexible flap valve, and belongs to the technical field of control devices on medium pipelines. The rotary interception flexible flap valve comprises a basic frame fixed to the outer wall of the water outlet of a pipeline; a flow channel is formed in the basic frame; the outer edge of basic frame is provided with a flange; a pressure block is fixed outside the flange; a groove is formed between the flange and the pressure block; a flexible diaphragm bar is fixedly connected into the groove; the lower end of the flexible diaphragm bar is fixedly connected with an opening and closing plate; the opening and closing plate has an integral rigid structure; the lower end of the opening and closing plate is a free end; when the opening and closing plate is closed, the opening and closing plate is contacted with the outer end face of the basic frame; the opening and closing plate is in contact connection with one end of a carrier rod; the other end of the carrier rod is electrically connected with an electric driving device. The rotary interception flexible flap valve has an interception (current-regulating) function. Flexible diaphragm cloth is adopted instead of the conventional rigid hinged structure, so that the opening pressure of the valve is very low (namely, low water loss).

Description

technical field [0001] The invention belongs to the technical field of control devices on medium pipelines, and in particular relates to a rotary shut-off flexible flap door. Background technique [0002] The existing flap door structure is a rigid hinge structure without flexible structure. Due to the reason of the metal material, its own gravity is relatively large. In the water system with low pressure (or no pressure), the flap door cannot be flushed by water, and then plays the role of opening and non-return. At the same time, the existing flap valve The door has no (flow regulating) function, so designing a non-return device according to the lower pressure (or no pressure) water passage system becomes a technical problem. Contents of the invention [0003] The object of the present invention is to provide a rotary shut-off flexible flapper for the defects of the prior art. It is suitable for the outlet of an open water system or the interface where a small pipe is ...

AI Technical Summary

Problems solved by technology

Due to the reason of the metal material, its own gravity is relatively large. In the water system with low pressure (or no pressure), the flap door cannot be flushed by water, and then plays the role of opening and non-return. At the same time, the existing flap valve The door has no (flow regulating) function, so it becomes a technical problem to design a non-return device according to the lower pressure (or no pressure) water system

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