Check valve and central lampblack purifying equipment

Abstract

The invention provides check valve and central lampblack purifying equipment, and relates to the technical field of purifying equipment. The check valve comprises a valve body; a first valve plate anda second valve plate are axially arranged in the valve body side by side, and are both matched with the section of the valve body; the valve body is provided with a first driving device and a seconddriving device; the first driving device is used for driving the first valve plate to rotate; and the second driving device is used for driving the second valve plate to rotate. The central lampblackpurifying equipment comprises a range hood and the check valve; and the check valve communicates between an exhaust port of the range hood and an exhaust port of a public flue. Through arrangement ofthe first valve plate and the second valve plate, when one of the first valve plate and the second valve plate is better in tightness, the valve plates can be prevented from generating the howlround phenomenon; and when the first valve plate and the second valve plate are both weaker in tightness, a separation layer therebetween can reduce the pressure difference between the air pressure of a kitchen and the air pressure of the public flue, so that the howlround strength is weakened.

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, the range hood is widely used in the kitchen. The range hood is an electrical appliance such as the cooking fume that is produced in the home 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 valve is usually set between the exhaust port of the range h...

AI Technical Summary

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 problem in the prior art that when the range hood is not used, there is a pressure difference between the two sides of the valve plate, because the valve plate and the valve body in the check valve It is difficult to guarantee the tightness between the two sides of the valve plate, and the technical problem of the valve whistle phenomenon will be caused when the gas on both sides of the valve plate flows through the gap.

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