ventilation valve

Abstract

The invention provides a ventilation valve, which includes a cylindrical valve body, a gear box, a plurality of fan-shaped blades and a driving device. A gear box is arranged in the center of the valve body, and a gear mechanism is arranged in the gear box; The gear mechanism drives the blades to rotate in the same direction around their respective central axes; the blades are evenly distributed in the valve body, the gear mechanism includes a first central gear and a second central gear sleeved on the same support shaft, the first central gear and the second central gear Between the two central gears, there are a plurality of gears arranged at one end of each central shaft extending into the gear box, and each gear is meshed with the first central gear and the second central gear at the same time; there are also one or more gears in the valve body. Anemometers, one or more anemometers have unequal distances from the axis of the anemometer to the axis of the valve body. The ventilation valve can precisely control the ventilation volume, is safe and reliable, improves the safety of the gear mechanism, effectively reduces the use loss and prolongs the service life.

Description

technical field [0001] The invention relates to a ventilation valve. Background technique [0002] Ventilation valve is a regulating valve with simple structure and wide application. It can be used in ventilation and environmental protection projects in various industries such as chemical industry, building materials, power stations, etc., as a control device for regulating or cutting off the flow of gas medium. [0003] In the prior art, the gear mechanism in the ventilation valve is used to control the rotation of the blades. However, the gear structure in the prior art is relatively simple. Since vibration is likely to occur during the operation of the motor, if the vibration amplitude is large, the gear structure is easy to In the case of gear misalignment or jamming, not only the gears are easily damaged, but also the motor is easily damaged, the service life of the ventilation valve is shortened, and the noise is relatively large. Contents of the invention [0004] ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the gear mechanism in the ventilation valve is used to control the rotation of the blades. However, the gear structure in the prior art is relatively simple. Since vibration is likely to occur during the operation of the motor, if the vibration amplitude is large, the gear structure is easy to In the case of gear misalignment or jamming, it is easy to cause damage not only to the gear, but also to the motor, which reduces the service life of the ventilation valve and makes the noise louder.

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