Air exhausting pipe check valve with natural ventilating and speed variable function

A technology of natural ventilation and exhaust ducts, applied in the direction of functional valves, control valves, valve devices, etc., can solve the problems of no gaps, backflow, and loose closure of valve plates and valve bodies, etc., achieving low cost and convenient use , the effect of simple structure

Active Publication Date: 2005-05-11
HENAN WUJIAN CONSTR GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Exhaust duct check valves currently in use are mostly made of steel plates, aluminum plates or engineering plastic plates to prevent the backflow of airflow in the exhaust ducts. What they have in common is rigid bodies. The disadvantage is that when the valve discs adhere After being greasy, it is easy to cause the valve plate and the valve body to be closed tightly; at the same time, the rotating shaft that fixes the valve plate, whether it is set at the upper end or lower end or the middle part of the valve plate, whether it is a horizontal rotating shaft or a vertical rotating shaft, The

Method used

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  • Air exhausting pipe check valve with natural ventilating and speed variable function
  • Air exhausting pipe check valve with natural ventilating and speed variable function
  • Air exhausting pipe check valve with natural ventilating and speed variable function

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Embodiment Construction

[0013] Such as figure 1 As shown, the present invention includes an interface 4, a valve body 1, and a valve plate 2 that are arranged on the wall of the kitchen exhaust duct and communicate with the exhaust outlet of the exhaust duct and are used to socket the exhaust hose of the range hood. Valve body 1, the airflow passage 6 of valve body 1 is a variable speed hole 6 with 7 large air inlets and 5 small air outlets. The 5 ends of the air outlet of valve body 1 are provided with valve plate 2, and valve plate 2 covers the outlet of valve body 1. There are 8 places on the end face of the tuyere 5.

[0014] The valve sheet 2 is made of flexible material, and the external dimensions of the valve sheet 2 are larger than the external dimensions of the end surface 8 of the air outlet 5 of the valve body 1 .

[0015] The arrangement of the valve plate 2 at the air outlet 5 of the valve body 1 is that the valve plate 2 is fastened to the upper end of the air outlet 5 of the valve bo...

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Abstract

A check valve of exhaust channel with the functions of natural ventilation and speed variation is composed of a jointer for joining the exhaust port of exhaust channel with the flexible pipe of oil soot exhaustor, a valve body in said jointer with an airflow channel having big inlet and small outlet for changing speed, and a flexible valve sheet which is naturally suspended at the air outlet of valve body for covering it.

Description

Technical field: [0001] The invention relates to an exhaust duct check valve which is matched with the exhaust duct to prevent backflow of the air flow in the exhaust duct and has the functions of natural ventilation and speed change. Background technique: [0002] Exhaust duct check valves currently in use are mostly made of steel plates, aluminum plates or engineering plastic plates to prevent the backflow of airflow in the exhaust ducts. What they have in common is rigid bodies. The disadvantage is that when the valve discs adhere After being greasy, it is easy to cause the valve plate and the valve body to be closed tightly; at the same time, the rotating shaft that fixes the valve plate, whether it is set at the upper end or lower end or the middle part of the valve plate, whether it is a horizontal rotating shaft or a vertical rotating shaft, The structural assembly between it and the shaft sleeve and the valve body is also difficult to leave no gap between the valve p...

Claims

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Application Information

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IPC IPC(8): F16K15/00F24F13/10
Inventor 薛生利牛本银李小双蔡惠军李振文吴丽珊吴汉木
Owner HENAN WUJIAN CONSTR GRP
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