The cooling method of screw vacuum pump is mainly aimed at the condition of high temperature in the use of screw vacuum pump. If high temperature occurs in a short time, it is not a big problem, but if high temperature occurs in a long time, it should be paid attention to. Long-term high temperature conditions will damage all parts of the equipment, and even cause motor scrap when it is serious.
The first step should be to cool the shell. The screw vacuum pump can not take away the heat generated by working through the lubricant because the rotor has no lubricant in the working process. And it is an equal pitch screw vacuum pump, because there is no internal compression process, the exhaust temperature is very high, if the cooling effect is not good, it will cause the deformation of the rotor and the casing, affecting the pumping effect. Therefore, the shell of screw vacuum pump adopts double-layer tube wall hollow structure, which can be called cooling sleeve. Its built-in coolant is the main heat dissipation channel of screw vacuum pump. Water cooling is a common method. Cooling sleeve with cooling water can achieve the purpose of cooling the shell and then cooling the rotor. In addition, a few companies, such as Leebo, can cool the rotor through water, increase the life of the rotor, and achieve good cooling effect. However, the structural design needs certain technical and processing level support.
1. The original fan cover is lengthened by 40 cm, and an axial-flow fan with fan-through diameter is installed inside. The motor power requirement of the axial-flow fan is 850w, the speed is 14889r/min, and the voltage is 380V. The original fan is retained, the axial fan is set in another power supply control, the screw vacuum pump starts and the axial fan runs, and the main motor is fully cooled 30 minutes after the shutdown.
2. Keep the motor of screw vacuum pump clean and clean, regularly clean the dirt on the motor, increase the heat dissipation capacity.
3. Raise the bus voltage of screw vacuum pump to 400 V.
The cooling method of screw vacuum pump can reduce the temperature of equipment by adjusting the original fan to increase it. There is also the way that can achieve good results through water cooling heat dissipation. Choose the way that is suitable for you to use effective heat dissipation can be used to maintain the normal operation of the equipment.
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