4results about How to "Adjust ventilation" patented technology

The application discloses a ventilation volume adjusting device and a use method thereof, which comprises an equipment assembly, a pipeline and an auxiliary mechanism, the equipment assembly is sleeved and assembled on the outer wall of the upper side of the pipeline, a motor is assembled in the equipment assembly, a central shaft is radially penetrated in the pipeline, a regulating plate is assembled on the side wall of the central shaft, a wind speed sensor is assembled on the inner wall of the pipeline, two wind speed sensors are respectively located on the two sides of the regulating plate, and the use method for adjusting the air volume and replacing the motor is disclosed, the equipment assembly is designed, the rotating disc in the equipment assembly can drive the screw rod to rotate, the motor can be taken out after being driven by the rack, and vice versa, the motor can be conveniently put into use, the motor is arranged in the interior of the equipment by the method, the motor is protected, when the motor has a problem, the motor can be conveniently replaced and maintained, and the technical problem that the internal space of the equipment is small and the maintenance difficulty of the staff is increased is avoided.

The utility model relates to the technical field of preservative film bags, in particular to a vegetable and fruit preservative film bag with a ventilation structure, which comprises a bag surface, a folding surface is fixedly arranged on the side surface of the bag surface, a screw rod is arranged on the outer surface of the folding surface in a penetrating manner, a sliding block sleeve column is mounted on the outer surface of the screw rod in a threaded manner, and the sliding block sleeve column is provided with a ventilation structure. And an outer ring is fixedly mounted on the outer surface of the sliding block sleeve column. According to the vegetable and fruit preservative film bag with the ventilation structure, after fruits and vegetables are put into the preservative film bag and the sealing opening is sealed, the sliding barrel groove can be pulled to move through the outer cover, so that the sliding barrel groove can drive the contact blocking surface to slide on the outer surface of the sliding block sleeve column; the contact blocking face can be separated from the rubber blocking piece, so that the gas circulation channel is opened, air inside and outside the preservative film bag is freely exchanged, the concentration of oxygen and carbon dioxide in the bag is effectively adjusted, an accurately-matched microenvironment is created for fruits and vegetables, and it is ensured that the fruits and vegetables are always kept in a fresh state in the storage process.

This utility model relates to the field of louvers, specifically a sliding curtain wall ventilation louver device. It includes a window frame, ventilation opening, rotating shaft, flip-up baffle, driven gear, sliding groove, rack, filter frame, filter screen, and placement slot. Using this utility model, air can be purified while keeping the ventilation opening open, significantly reducing the rate of indoor dust accumulation and decreasing daily cleaning workload.

The application discloses a kind of roadway ventilation regulating device, it is related to roadway ventilation technical field, mainly include: oxygen production unit, oxygen can be prepared;Fan unit, air inlet is connected with oxygen production unit, fan unit can mix air with the oxygen provided by oxygen production unit, to provide oxygen-containing wind;Heating unit, set in the air outlet of fan unit, for heating oxygen-containing wind;Ventilation pipe, with heating unit is connected, for after heating oxygen-containing wind is delivered to roadway;Adjusting unit, including controller and sensor component, controller is signal connected with sensor component, oxygen production unit, fan unit and heating unit, sensor component is used to monitor the environmental parameter of roadway, controller can control oxygen production unit, fan unit and heating unit work according to the environmental parameter monitored by sensor component.The application can integrate heating, oxygen production, ventilation function, to adapt to plateau mine, and improve the efficiency and safety of mine roadway ventilation.