... :1,the main motor is 15-280KW3vacuum1suitWater ring vacuum pump4barrels1suit 5soft water cooling system1suit 6Gearbox1suit 7auxiliary pelletizing ... equipped with blind blockings. The ninth barrel has vacuum exhaust outlets. And the rest barrels are closed- ... for the speed regulation system. c.vacuum system1.vacuum pump,AC motor2.Vacuum chamber,vacuum meter,vacuum pipes, and vacuum tank:one set. d. ...