Working principle of machine tool cooling water submersible pump
The working principle of the machine tool cooling water submersible pump is mainly based on the principles of centrifugal force and fluid dynamics. The following is a detailed explanation of its working principle:
1. Basic working principle
Motor drive: The submersible pump drives the impeller to rotate through the motor. As a power source, the motor provides the necessary torque and speed to enable the impeller to rotate continuously and stably.
Impeller rotation: The blades in the impeller rotate under the drive of the motor. The rotation of the blades forces the cooling water to rotate and do work on the water, increasing its energy. In this process, the cooling water is thrown to the outer edge of the impeller under the action of centrifugal force.
Liquid throwing and suction: As the impeller rotates, the cooling water is thrown out of the impeller and converts the velocity energy into pressure energy through the vortex flow channel of the pump body. When the cooling water in the impeller is thrown out, the pressure in the impeller decreases, forming a negative pressure zone. At this time, since the cooling water pressure in the water inlet pipe is higher than the pressure in the impeller, the new cooling water is sucked into the impeller under the action of the pressure difference, thereby realizing the continuous circulation of cooling water.
2. Special design and features
Vertical installation: The machine tool cooling water submersible pump is usually installed vertically, and the working part is submerged in the cooling water, which can reduce the floor space, reduce infrastructure investment, and facilitate maintenance.
Shaft seal design: Since the working part of the submersible pump is submerged in the liquid, the shaft seal is designed to be special to ensure that there is no liquid splashing. At the same time, a cooling system may also be provided at the shaft seal to prevent the shaft seal from overheating and wear.
Bearing support: The axial and radial forces generated by the operation of the pump are supported by rolling bearings and sliding bearings respectively to ensure the stable operation of the pump. Under high temperature conditions, a cooling system may also be provided at the bearing box component to remove heat with cooling water.
Sealing performance: The sealing performance of the submersible pump is usually good, which helps prevent cooling water leakage and impurities from entering the pump. Some submersible pumps also use packing or self-sealing sealing structures to further improve the sealing performance.
3. Application scenarios and advantages
Machine tool cooling water submersible pumps are widely used in mechanical processing, metallurgy, chemical industry and other fields, mainly for cooling and lubrication of machine tool equipment. Its advantages are:
Simple structure, safe and reliable operation;
Easy to use and maintain;
Continuous and uniform liquid discharge, stable pressure;
Small footprint, reduced infrastructure investment;
Strong corrosion resistance, etc.
