Lifting shut-off rubber disc check valve

Abstract

The invention relates to a lifting type closure check valve with a rubber clack, and belongs to the technical field of control equipment on a medium pipeline. The lifting type closure check valve with the rubber clack comprises a valve body, a flow pass arranged inside the valve body and a valve deck arranged on the valve body, wherein a groove is arranged between the valve body and the valve deck, the inner upper end of the valve body is close to one end of a water inlet, a supporting shaft is arranged inside the groove, the supporting shaft is fixedly connected with the flexible rubber clack used for sealing the valve body, the outer side of the flexible rubber clack is fixedly connected with a position adjusting block, the valve deck is provided with an installation hole, a linear driving lifting device is installed inside the installation hole, the output end of the linear driving lifting device penetrates into the installation hole, and a position adjusting wheel matched with the position adjusting block is fixed to the output end of the linear driving lifting device. The lifting type closure check valve with the rubber clack has the function of closure (flow adjustment), the linear driving lifting device is installed at the upper portion of the valve deck, and the shaft end of the linear driving lifting device acts on the position adjusting block to achieve adjustment of the opening degree of the valve.

Description

technical field [0001] The invention belongs to the technical field of control equipment on medium pipelines, and in particular relates to a lift-type shut-off rubber flap check valve. Background technique [0002] In the existing check valve, the valve disc is a rigid structure of metal material. 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 valve disc of the check valve cannot be The water flushes away, and then plays the role of check, and in the existing check valve, the free adjustment of the opening of the disc cannot be realized, so as to control the size of the water flow, so according to the lower pressure (or no pressure) Designing a non-return device for the water supply system has become a technical problem. Contents of the invention [0003] The object of the present invention is to provide a lift-type shut-off rubber flap check valve aimed at the defects of the prior ...

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Problems solved by technology

[0002] In the existing check valve, the valve disc is a rigid structure of metal material. 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 valve disc of the check valve cannot be The water flushes away, and then plays the role of check, and in the existing check valve, the free adjustment of the opening of the disc cannot be realized, so as to control the size of the water flow, so according to the lower pressure (or no pressure) Designing a non-return device for the water system has become a technical problem

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