As a common extruder equipment, the second-hand double screw parallel rod extruder is mainly used in the plastics processing industry. It is generally divided into three sections in terms of effective length. The extruder is divided into screw diameter, screw pitch and screw depth. Determine the effective length of the three-stage extruder, generally divided by one third.
The used double-screw parallel rod extruder adopts a double-stage overall design, which strengthens the plasticizing function, guarantees high-speed and high-performance stable extrusion, a special barrier comprehensive mixing design, the extruder ensures the mixing effect of the material, and the unit is low-melting The plasticizing temperature ensures the high-performance low-temperature low-pressure metering extrusion of the materials.
Used double screw parallel rod extruder common fault solution:
First, the main motor of the used double screw parallel rod extruder cannot start
Cause: The driving procedure is wrong. There is a problem with the main motor thread. Is the fuse wire burned? Solution: Check the procedure and restart the vehicle in the correct driving sequence. Check the main motor circuit. Check whether the lubricating oil pump is started, and check the status of the interlocking device related to the main motor. The inverter induction power is not discharged, turn off the main power supply and wait for 5 minutes before starting. Check whether the emergency button is reset.
Second, the main motor of the second-hand double screw parallel rod extruder makes an abnormal sound
Cause: The main motor bearing is damaged. One of the SCRs in the main motor SCR rectifier circuit is damaged. Treatment method: replace the main motor bearing. Check the silicon controlled rectifier circuit, and replace the silicon controlled element if necessary.
Third, the current of the main body of the second-hand double screw parallel rod extruder is unstable
Causes: uneven feeding, damaged or poorly lubricated main motor bearings, a certain section of heater failure, no heating, wrong screw adjustment pad, or wrong phase, component interference. Treatment method: Check the feeder and eliminate the fault. Overhaul the main motor and replace the bearings if necessary. Check whether each heater is working properly, and replace the heater if necessary. Check the adjustment pad and pull out the screw to check whether the screw interferes.
Fourth, the temperature rise of the main motor bearing of the used double-screw parallel rod extruder is too high
Cause: Poor bearing lubrication. The bearings are badly worn.
Handling method: check and add lubricant. Check the motor bearings and replace if necessary.