Automatic ventilation device of vegetable greenhouse

Abstract

The invention relates to agricultural production equipment, and discloses an automatic ventilation device of a vegetable greenhouse. The automatic ventilation device of the vegetable greenhouse mainly comprises an air pushing cylinder, an air pushing assembly, a fresh air assembly, an electric contact thermometer, a controller and an automatic ventilation actuator, wherein the air pushing cylinder is connected on the air pushing assembly, the air pushing assembly is arranged on the roof of the vegetable greenhouse, and an air pushing ventilation door is arranged on an air suction opening of the air pushing assembly. The automatic ventilation actuator comprises an air pushing driving motor, a speed changing box, a driving gear and a driven gear, wherein the driving gear is mounted on a driven shaft of the speed changing box and meshed with the driven gear, and the driven gear is coupled on a curved plate wheel of the air pushing ventilation door through an elastic clutch. A fresh air ventilation door is arranged inside the fresh air assembly, and a rotating shaft of the fresh air ventilation door is connected on a rotating shaft of a fresh air driving motor. The controller is in electric connection with the electric contact thermometer, the motors and a power port through wires. The automatic ventilation device of the vegetable greenhouse can save a large amount of manpower and prolong the service life of a plastic film at the same time.

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 ...

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

Images