Check valve and central fume purification equipment

Abstract

The invention provides a check valve and central fume purification equipment, and relates to the technical field of purification equipment. The check valve comprises a valve body and a valve sheet; the valve body is provided with a drive device and a connecting arm which are fixedly connected, the valve sheet is hinged to the free end of the connecting arm, the drive device drives the connecting arm and the valve sheet to move in the axial direction of the valve body, a drive part is arranged in the valve body, the drive part moves in the axial direction of the valve body along with the valvebody to drive the valve sheet to achieve angular rotation, the blockage state of the valve sheet to the valve body is changed, and the central fume purification equipment comprises a kitchen ventilator and the check valve; the check valve communicates between an exhaust opening of the kitchen ventilator and an air outlet of a public flue. The valve sheet achieves the angular rotation under drive of the connecting arm and drive of the drive part, the blockage control over the valve body is achieved, the valve sheet is good in blockage seal on the valve body, and fume reinjection and squealing of fume can be reduced.

Description

technical field [0001] The invention relates to the technical field of purification equipment, in particular to a check valve and central oil fume purification equipment. Background technique [0002] The production process of traditional Chinese food culture includes frying, frying, deep-frying, roasting, etc. During the process of making food, a lot of oil fume is produced, and the oil fume not only seriously pollutes the kitchen environment, but also the kitchen operators stay in the oil fume environment for a long time. The harm is relatively large, serious, and even cancer. Therefore, in order to reduce the harm of oil fume to the human body, people have designed a range hood that can transport the oil fume in the kitchen to the outside, and the range hood has been widely used in the kitchen. [0003] In the existing range hood, in order to reduce or even prevent the oil fume discharged from the range hood from refilling into the range hood and into the kitchen, a check...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a check valve and central oil fume purification equipment to solve the poor sealing between the valve plate and the valve body in the check valve in the prior art, which leads to the return of oil fume in the public flue, and In the blocked state, it is easy to produce the technical problem of howling phenomenon

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