Lifting closure flexible flap valve

Abstract

The invention relates to a lifting closure flexible flap valve, and belongs to the technical field of control devices on a medium pipeline. The lifting closure flexible flap valve comprises a basic frame fixed to the outer wall of a water outlet of a pipeline, wherein a flow pass is arranged inside the basic frame, a flange is arranged at the outer edge of the basic frame, a pressing block is fixed outside the flange, a groove is arranged between the flange and the pressing block, a flexible membrane strip is fixedly connected inside the groove, the lower end of the flexible membrane strip is fixedly connected with an opening-closing plate, the opening-closing plate is of an integrated rigid structure, the lower end of the opening-closing plate is a free end, and when the opening-closing plate is closed, the opening-closing plate makes contact with the outer end surface of the basic frame, and the outer side of the opening-closing plate is fixedly connected with a position adjusting block; an installation plate perpendicular to the basic frame is fixed to the flange, the installation plate is provided with an installation hole, a linear lifting driving device is arranged inside the installation hole, and a position adjusting wheel matched with the position adjusting block is fixed at the output end of the linear lifting driving device. The lifting closure flexible flap valve achieves low opening pressure, namely low water damage.

Description

technical field [0001] The invention belongs to the technical field of control devices on medium pipelines, and in particular relates to a flexible flap door for lifting and closing flow. 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 kind of lifting and closing flexible flapper for the defects of the prior art. It is suitable for the outlet of an open water system or the interfa...

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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