Especially, it can suit to extract a large amount of condensable steam, especially when the capacity of gas-ballast oil-seal mechanical vacuum pump to remove condensable steam is not enough, or the solvent used can deteriorate the performance of the pump oil, or when oil pollution is not allowed in the vacuum system.
When equipped with explosion-proof motors and electrical appliances, the vacuum unit can also extract flammable and explosive gases under the corresponding safety rules. Therefore, Pump-Water ring pump unit is widely used in vacuum distillation, vacuum evaporation, dehydration and crystallization in chemical industry; freeze-drying in food industry; vacuum drying in pharmaceutical industry; polyester chips in textile industry; high-altitude simulation test and so on. Before using the vacuum unit, it is necessary to carefully check whether the fasteners in each part are loose or not. If there is loose, it must be corrected and tightened. Before starting, the tank must be filled with water, and the inlet valve of the pump must be opened. It is strictly forbidden to dehydrate, rotate and reverse, so as to prevent damage to the seal and pump.
Before the vacuum unit shuts down, it first empties or the vacuum degree falls below 0.092 Mpa, then shuts down in order to prevent the vacuum degree from being too high and suction easily damages the check valve. If the check valve fails, please open the check valve cover and remove impurities.) Steam-water series jet pump of vacuum unit, first opens and then turns on steam, then shuts down to prevent damage to the water jet pump. When installing steam pipeline, make sure that water can not accumulate in the pipeline, and keep the level, otherwise the vacuum will be affected. The excessive temperature of circulating water in the pool will affect the exhaust capacity and vacuum degree. It is necessary to replace or replenish water in time.
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