The invention relates to the technical field of photovoltaic
coating equipment, and discloses a front-end filtering device of a
vacuum pump. The front-end filtering device of the
vacuum pump comprises a filtering box, and a heating
assembly, a cooling
assembly and a filtering
assembly which are arranged in the filtering box, wherein a water inlet, an air inlet and an air outlet which are mutually communicated are formed in the filtering box, the water inlet is formed in the bottom of the filtering box and used for being communicated with a
water source, the air inlet is formed in the side wall of the filtering box, the air outlet is formed in the upper portion of the filtering box and used for being communicated with a
vacuum pump, the heating assembly, the cooling assembly and the filtering assembly are sequentially arranged between the air inlet and the air outlet from bottom to top, the heating assembly can heat water to atomize the water, a cooling liquid is arranged in the cooling assembly, and
tail gas can be sequentially subjected to water mist
thermal reaction by the heating assembly, condensed by the cooling assembly to remove impurities, filtered by the filtering assembly, subjected to gas-liquid separation and then input into the vacuum pump. The vacuum pump front-end filtering device can guarantee the effective operation environment of the vacuum pump and reduce the maintenance cost of the vacuum pump.