Application and selection of water ring vacuum pump in pulp and paper industry
In the process of pulping and papermaking, vacuum dewatering is used in many processes. There are vacuum suction box, roller, vacuum suction roll, vacuum press and upper and lower wool vacuum suction box. The vacuum capacity of water ring vacuum pump is a common method of vacuum dewatering of paper pulp.
There are three indexes to evaluate the reasonable selection of water ring vacuum pump in a pulping and papermaking vacuum system: the amount of gas pumped, the power of the shaft at the working point and the power of the auxiliary motor. Selection, in qigong quantity under the premise of meet the requirements of production line, should as far as possible to reduce the working point of water ring vacuum pump shaft power, because the consumption of water ring vacuum pump shaft power is smaller, the cost of the pulp and paper. The auxiliary power of the motor is also small, the total installed capacity is small, and the electrical configuration cost can also be reduced.
Generally speaking, a paper production line with a fixed annual output requires a certain amount of gas extraction. For the paper mill, in order to reduce the energy consumption and energy saving, and thus reduce the cost of paper production, the correctness of water ring vacuum pump selection is very critical and important.
To illustrate this problem, we first understand the operating characteristics of water ring vacuum pump. Water ring vacuum pump is a volume type of pump, when the water ring vacuum pump model is determined, its volume is also determined. For the water ring vacuum pump, the main factors that affect its pumping capacity are the volume of the pump and the speed of pump operation.