Automatic ventilation component for vegetable greenhouse

Abstract

The invention discloses an automatic ventilation component for a vegetable greenhouse, mainly consisting of a casing, an air valve, an air valve rotary shaft, a spring seat, a spring, an elastic coupler and a motor, wherein the casing is in a cylindrical body structure or a square frame body structure which runs through front to back; an upper door frame, a lower door frame, the air valve and the air valve rotary shaft are arranged in the casing; a shaft sleeve a is arranged on the wall body of a surface a of the casing, a shaft sleeve b is arranged on the wall body of a surface b of the casing, and the two ends of the air door rotary shaft respectively extend out of the shaft sleeve a and the shaft sleeve b; the spring seat, the spring and a piece A of the elastic coupler are sequentially mounted on the air valve rotary shaft extending out of the shaft sleeve b; the elastic coupler comprises the piece A and a piece B, trapezoidal meshing teeth meshed with each other are respectively arranged on the piece A and the piece B of the elastic coupler; and a front end rotary shaft of the motor is connected to the air valve rotary shaft through the elastic coupler. With the adoption of the automatic ventilation device for the vegetable greenhouse, provided by the invention, a plastic film is not needed to be opened for heat dissipation, a fan is not used, a large number of manpower is saved, and meanwhile, the service life of the plastic film is prolonged.

Description

technical field [0001] The invention relates to an agricultural production equipment, in particular to a vegetable greenhouse ventilation device. Background technique [0002] The vegetable greenhouse is a frame-covered structure with thermal insulation properties. Its appearance allows people to eat off-season vegetables and fruits. Generally, the vegetable greenhouse uses a bamboo structure or a steel structure frame, covered with one or more layers of thermal insulation plastic film, thus forming a greenhouse space. The outer film can well prevent the loss of carbon dioxide produced by the growth of vegetables inside, so that the shed has a good heat preservation effect. [0003] The current vegetable greenhouses do not have ventilation devices. When there is plenty of sunlight during the day, the temperature inside the vegetable greenhouses is too high, which is not conducive to the growth of fruits and vegetables. Often, the thermal insulation plastic film is removed f...

AI Technical Summary

Problems solved by technology

[0003] The current vegetable greenhouses do not have ventilation devices. When there is plenty of sunlight during the day, the temperature in the vegetable greenhouses is too high, which is not conducive to the growth of fruits and vegetables. Often, the thermal insulation plastic film is removed for ventilation and heat dissipation, and the plastic film is still covered before evening. This not only consumes a lot of manpower, but also easily causes damage to the plastic film or shortens the service life

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