How to do well the sealing work of coal mine fan

When installing the coal mine fan, the sealing work of the fan should be done well, because the sealing performance is one of the important indicators of the operation reliability of the coal mine fan, if the sealing is not good, it will cause losses. What are our common sealing methods during installation? Labyrinth seal: labyrinth seal, also known as labeling seal and comb seal, is the most widely used in the application of coal mine fans. Basically, labyrinth seal is used, and the shaft end seal for conveying air is also used in the case of low pressure. Floating ring seal: the floating ring seal uses the pressure oil film formed between the main shaft and the floating ring, and the balance between the closing pressure of the oil film and the external load (pressure of the working medium) to seal the axial leakage of the working medium, so as to avoid the mechanical wear. Mechanical seal: it is a kind of axial rotation sealing device that relies on the preload of elastic elements on the friction pairs of static and dynamic ring end faces and the compression of medium pressure and elastic element pressure. Dry gas seal: dry gas seal is gas film seal. It is the best sealing form of turbine compressor and sealing effect at present. It uses nitrogen or other harmless gas as sealing medium. The requirement of seal gas cleanliness is high, and there is a complex gas supply system.