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同行平行双螺杆挤出造粒机在切粒部分出现的故障有哪些?
Strand pelletizing Φ3*3 column shape pellet 双螺杆挤出机水冷拉条切粒 Φ3*3圆柱形 | ·Strands are too thin or too thick 料条太细或太粗 | ·Reduce or increase the pelletizer speed, clean the die plate 减小或增大切粒速度,清理模板 |
·Lengths of pellets are not in uniform 切出的粒子长短不均匀 | ·Fix the position of feeding strands, avoid strands to sway 固定喂料条的喂入位置,避免摇摆 | |
·End of pellets is not smooth 料子端面光滑 | ·Adjust the clearance between rotating knife and fixed knife 调整动刀和定刀之间的间隙 | |
·Pellets shape is flat 切出粒子成扁平状 | ·The pressure of roller is too heavy. Adjust the air pressure or spring pressure 压辊的压力太大,调节气压或弹簧压力 | |
·Strands cannot be cut off 料条不能切断 | ·The temperature of strands is too high. Increase the distance between main machine and pelletizer, or add another air knife, or increase cooling water circulation in the tank 料条温度太高增加主机和切粒机之间的距离 | |
·Strands broken easily 容易断条 | ·Material are not well plasticized or too many contaminations, or change screw configuration 物料塑化不完全或含太多的杂质,或考虑螺杆组合是否合适 | |
Air-cooling pelletizing Φ3*3 mm Table or ball 双螺杆挤出造粒机风冷热切 Φ3*3 mm药片状或球状
| ·Length of pellets are not in uniform 粒子长度不一 | ·Some holes of die plate are blocked, stop the mahine and clean die-head. When the melt comes out in the same speed, start up the pelletizer at low speed and increase to normal speed 局部出条孔堵塞,停机,拆下模头快速清理。 等模条出料均匀再从低速启动切粒机至正常转速 |
·Pellets stick to each other 粒子粘在一起
| ·Check if the knives touch close to die-face and if the knife stick shakes. If the melt temperature is too high, reduce the temperature of each zone or spray water 检查刀具是否紧贴模面,刀杆是否摆动。料温过高,适当降低各区设定温度或补喷水雾 | |
·Products cannot come out from the cyclone separator 旋风分离器不出料
| ·Take off the first elbow pipe to clean, keep the pipes smooth 拆下风管第一节弯头,及时清理,保持管道畅通 | |
·End of pellets is not smooth 粒子端面不光滑
| ·Mill or change the knives. Check if all knives touch close to the die-face 修磨或更换切刀,检查是否所有的刀片都紧贴模面 | |
Water-ring pelletizing similar to small balls or Φ3mm 双螺杆挤出造粒机水环造粒 Φ3mm近似球型 | ·Length of pellets not in uniform 粒子长短不一 | ·Could be some holes of die plate may blocked, so clean the die plate 可能是部分出料孔堵塞,清理模板 |
·Pellets stick to each outher 粒子粘在一起
| ·Check if the knives touch closed to the die-face or melt temperature id too high. So reduce the temperature of each zone 检查切刀是够紧贴模面或者熔体温度太高,降低各区温度 | |
·End of pellets is not smooth 粒子表面不光滑 | ·Mill or change the knives. Check if all knives touch close to the die-face 修磨或更换切刀,检查是否所有刀片都紧贴模面 | |
Under-water pelletizing Similar to small balls of Φ3mm 塑料造粒机水下造粒 近似Φ3mm球型
| ·Pellets stick each other and block the pipe 粒子粘在一起并堵塞了管道 | ·The temperature of die-head too high, adjust the pelletizer speed and cooling water flow to match the output. 模头温度太高,调节切粒速度和冷却水的流量,与主机的产量匹配 |
·Melt does not come out in same speed 模头出料不均匀 | ·Some heater pipes are not working properly. Contamination in the melt. Main machine output too low. 局部加热管损坏,物料中含有杂质堵塞模孔,主机产量过低 |