Heavy-hammer fan opening and closing mechanism: Its switching mechanism is realized by means of two unpowered hundred-turn heavy hammers and an automatic device. The louver is windproof, dustproof and rainproof. Motor: V-belt drive, equipped with high-efficiency and energy-saving motor, passed 3C certification, protection class: IP54, insulation class: F class. Belt: imported B-type belt, no deformation, long life; maintenance-free during the entire service cycle. Testing: Strict six quality testing procedures: noise testing, vibration testing, rotational concentricity testing, fan speed testing, air volume testing, and overall machine efficiency testing.

FRP negative pressure fan is a new type of anti-corrosion FRP ventilation equipment, which belongs to axial flow fan. Since the outer frame of the fan is made of anti-corrosion fiberglass, its working principle is to use negative pressure ventilation to complete the purpose of air circulation, ventilation and cooling. In this issue of news and information, the editor will introduce the maintenance considerations for negative pressure fans. 1. When the negative pressure fan is not used for a long time, it is necessary to check whether the connecting parts are firm and reliable, and then it can be officially used after trial operation. 2. After the negative pressure fan is officially put into operation, whether the screws are loose, and whether the wire cover is damaged, repair it every year. 3. Check and check if the air filter is dirty. If the air filter is dirty, remove the air filter, loosen the wing nut, remove the cover and clean the filter sponge (be careful not to drip dust into the fan body when removing the filter).

The electric heater is a combined unit consisting of a fan, a motor and an air heater. Suitable for various workshops. When there is no dust and flammable and explosive gases in the air, it can be used for circulating air heating. The equipment can be heated independently, generally used to supplement the lack of radiator or use the radiator as on-duty heating, and other heat loads are borne by the heater. Maybe ordinary farmers will consider the cost and build a greenhouse model, because this kind of building uses sunlight to solve the heating problem during the day, and does not need to bear other costs, but at night, heating and keeping warm is a tricky problem. At this time, an electric heating fan without preheating can be used, which solves the problem that the heating device with higher efficiency can use fuel such as fuel oil, gas, coal, and electricity. There are many more options. The required temperature can be adjusted by the built-in temperature control device for fully automatic operation