Brief Description:The underwater plastic automatic pelletizing machine is mainly used for processing waste plastic films (industrial packaging films, agricultural mulch films, greenhouse films, beer packaging, shopping bags, etc.), woven bags, agricultural convenience bags, basins, buckets, beverage bottles, furniture, and daily necessities. It is suitable for most common types of waste plastics and is widely used and popular in the waste plastic recycling industry as a versatile plastic recycling and processing machine.
Underwater plastic automatic pelletizerPrecautions for use
After turning on the switch, a period of preheating is required before starting the lubricating oil pump and other switches.
2. If the main unit is operating normally and it is possible to start adding material, the operator must ensure that there are no impurities in the material while filling, and also control the temperature properly.
3. If the material does not form strips and sticks to the die head when the underwater pelletizer is started, it is due to the die head temperature being too high. Wait for it to cool slightly, and it will return to normal. In most cases, there is no need to stop the machine.
4. The water temperature should be controlled between 50-60℃. A temperature that is too low can cause cracking, while a temperature that is too high can lead to adhesion. When starting the machine, add half hot water. Once the water temperature exceeds 60℃, circulating water must be added to prevent the temperature from becoming too high. The circulating water should be softened or distilled water.
5. During the operation of the machine, it is prohibited to use metal objects to adjust the material at the opening of the barrel.
6. The strands must be evenly pulled before being fed into the pelletizer, otherwise it will damage the machine. If material is rapidly expelled from the vent hole, it indicates that impurities have clogged the filter screen, and at this point, the machine must be stopped immediately to replace the screen.
7. The heating temperature depends on the softening point and melting temperature of the resin; the higher the melting point, the higher the required heating temperature. The temperature requirement should be 5 degrees Celsius above the melting point.
Common Causes of Malfunctions in Underwater Plastic Auto Pelletizers
In underwater pelletizing units, the reasons for the disengagement of the friction clutch and the interlock shutdown of the unit during operation can be categorized into four major types:
Main motor system failure
1. The main motor torque is too high or too low;
2. The main motor speed is too low;
3. The main motor bearing temperature is too high;
4. The main motor winding temperature is too high;
5. The inlet and outlet temperatures of the main motor water cooler are too high;
6. The flow rate at the outlet of the main motor bearing lubricating oil pump is too low;
7. The pressure at the outlet of the main motor bearing lubricating oil pump is too low;
8. The water leakage from the main motor water cooler is too high.
Transmission system failure
1. Gearbox shift lever position deviation;
2. Excessive instrument air pressure for the friction clutch;
3. Excessive speed differential of the friction clutch;
4. Low outlet pressure of the gearbox lubricating oil pump;
5. High outlet oil temperature of the gearbox lubricating oil pump;
6. Internal failure of the friction clutch, etc.
Failure of the screw process section in an extrusion granulator
1. The melt pressure before and after the throttle valve is too high;
2. The melt pressure at the die head is too high;
3. The melt pressure difference before and after the screen changer is too large;
4. Starting valve rotation failure, etc.
Underwater pelletizer system failure
1. The pelletizing motor winding temperature is too high.
2. The pelletizer speed is too low.
3. The pelletizer torque is too high.
4. Automatic switching of the pellet water bypass has failed.
5. The pellet water pressure is too high or too low.
6. The pellet water flow is too low.
7. The pelletizer clamping bolts are not tightened.
8. The pellet chamber bypass water valve is not closed.
9. The pelletizer hydraulic clamping pressure is too low.
10. The pelletizing motor has failed.
11. The axial feed pressure of the hydraulic cutting knife is too low.
Nanjing Xintuo Intelligent Equipment Co., Ltd. was established on May 29, 2020, with Zhou Xianting as the legal representative. The registered capital is 10 million RMB, and the unified social credit code is 91320113MA21LF2H92. The company is located in the Baima Town Industrial Concentration Zone, Lishui District, Nanjing City. It belongs to the other manufacturing industry. Its business scope includes: Permitted projects: import and export of goods; import and export of technology (projects that require approval by relevant departments can only be carried out after obtaining such approval, specific business items are subject to the approval results). General projects: sales of intelligent material handling equipment; research and development of machinery and equipment; general equipment manufacturing (excluding special equipment manufacturing); specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); sales of metal products; wholesale of electronic components; sales of instruments and meters; sales of artificial intelligence hardware; processing and sales of mechanical parts and components; general component manufacturing; sales of plastic products; production and sales of Class I medical devices; sales of Class II medical devices; sales of health supplies and disposable medical supplies; sales of special labor protective equipment; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion (except for projects that require approval, activities can be conducted independently according to the business license). The current operating status of Nanjing Xintuo Intelligent Equipment Co., Ltd. is active (in operation, open, registered).
