Internal mixer acceptance requirements (2)
No-load test run:
1. First start each lubricating oil pump and hydraulic station of the internal mixer to check whether the oil supply of each part is normal. After the oil pump and hydraulic station work normally for 15 minutes, start the main motor, and check whether the rotor steering is correct from the water outlet of the mixing chamber. Usually, the mixer is idling for more than 2 hours before leaving the factory, and it is idling for more than 4 hours at the user.
2. Turn on the cooling water system of the mixer and check for leaks.
3. In the manual and automatic operation state, the pressing mass, the feeding door and the discharging door are opened many times, and the actions should be flexible and reliable.
4. Check the following items during the dry running test of the mixer:
(1) The lubrication points of the transmission gear and bearing of the reducer are fully lubricated, and each sealing part is well sealed.
(2) There should be no sudden rise in the bearing temperature of each part of the internal mixer, and the temperature rise of the rotor bearing and the reducer bearing should be ≤20℃.
(3) When idling, the main motor is single-speed, and its power consumption should be less than 15% of the rated power
(4) There should be no sudden rise in the bearing temperature of each part of the internal mixer, and the temperature rise of the rotor bearing and the reducer bearing should be ≤20℃.
(5) There shall be no large vibration and periodic noise during operation. Masterbatch Granulator
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