Measures to Prevent Oil Return from DC Permanent Magnet Motors

Previously, the editor has introduced in detail the control and wiring methods of the DC permanent magnet motor. It can be seen that there are five wiring methods for this motor, and its control methods are as follows: speed regulation, forward and reverse rotation, and emblem control.

Next, the editor will introduce to you the control principle of DC permanent magnet motor, as follows:

In order to make the DC permanent magnet motor rotate, the control part must determine the order of turning on the power transistors in the inverter according to the current position of the motor rotor sensed, and then according to the stator winding. The AH, BH, CH and AL, BL, and CL cause current to flow through the motor coils in sequence to generate a forward rotating magnetic field, which interacts with the magnets of the rotor, thus causing the motor to rotate clockwise/counterclockwise. When the motor rotor rotates to the position where the hall-sensor senses another set of signals, the control unit turns on the next set of power transistors. In this way, the circulating motor can continue to rotate in the same direction until the control unit decides to turn off the motor rotor to stop. Power transistor; if the motor rotor is to be reversed, the power transistor opening sequence is reversed.

However, when we usually use DC permanent magnet motors, oil return often occurs, and this phenomenon has caused trouble to many users. So how to prevent oil return in DC permanent magnet motors? Let the editor analyze the specific preventive measures for you below!

1. Separate the oil near the exhaust valve of the DC permanent magnet motor from other oil. The oil level can be slightly higher than the partition wall.

2. Move the fuel tank and exhaust valve to the side to lower the oil level and reduce the amount of oil.

3. Add a pipe to the oil hole so that the oil level is only slightly higher than the oil inlet.

4. The sealing part of the shaft seal must be reliable and replaced in time.

5. Install an inflation valve on the motor port of the DC permanent magnet motor.

6. The base plane of the DC motor should be kept flat, and the valve plate should be elastic.

7. Set up an oil motor and auxiliary mechanism, and cut off the oil circuit when the motor stops.

8. Set up the check valve mechanism of the DC motor to automatically close the oil inlet when the motor is stopped.

The above are the measures to prevent oil return in DC permanent magnet motors. I hope that everyone can have a better understanding after reading it, and it can bring greater help to everyone in future use. This is the introduction of the above knowledge today!