The single screw plastic extrusion equipment is equipped with a 40:1 high-efficiency barrel screw, and the newly designed high aspect ratio screw improves plasticization efficiency, plasticization quality, and melt uniformity
Single screw plastic extrusion equipmentIntroduction:
The BRD75PLUS5 extruder is equipped with a 40:1 high-efficiency barrel screw, and the newly designed high aspect ratio screw improves plasticizing efficiency, plasticizing quality, and melt uniformity. By special design, the extrusion capacity of the screw is significantly increased, with a motor power of 200KW and a production capacity of 800-900KG/HR.
Accurate heating and cooling system
The heater adopts a ceramic strip insulation cotton type heater, which makes the heating efficiency higher, the heat loss smaller, and more efficient and energy-saving. This design is different from the commonly used method in China, as it balances heating and cooling, making temperature control more precise.
*Transmission system
The reducer adopts the current domestic reducer with the same external dimensions and higher torque, which is more efficient.
Intelligent electrical control
The whole machine adopts PLC control and is a fully computerized intelligent control extruder. It can achieve synchronous speed regulation operation of the entire line, and also has remote safety monitoring and intelligent control.
Usage and characteristics:
It is mainly used for extruding thermoplastic materials such as soft and hard polyvinyl chloride, polyolefin, etc. It can be used in conjunction with corresponding auxiliary machines (including molding heads) to process various plastic products, such as films, pipes, rods, plates, wires, tapes, cable insulation layers, and hollow products. It can also be used for granulation. This machine is designed with high output, good plasticization, and low energy consumption. It adopts hard tooth surface gear transmission, which has the characteristics of low noise, smooth operation, high bearing capacity, and long service life.
Daily maintenance of single screw plastic extrusion equipment:
1. Due to the high requirements for environmental temperature and dust prevention in the electrical control system, it is necessary to isolate the electrical system from the production site and install ventilation or ventilation fans. It is recommended to place the electrical control cabinet in a simple room to maintain indoor cleanliness and ventilation, so that the indoor temperature does not exceed 40 ℃.
2. Single screw extruders are not allowed to run empty to prevent the screw and machine from rolling. When the host starts idling, it is not allowed to exceed 100r/min; Start the host at low speed first, check for any abnormal sounds after starting the host, and then slowly increase the host speed to within the allowable range of the process (it is better to adjust it to a better state). When the new machine is running in, the current load should be between 60-70%, and the current during normal use should not exceed 90%. Attention: If there is any abnormal noise during the operation of the extruder, it should be stopped immediately for inspection or repair.
3. Turn on the oil pump before starting up, and then turn off the oil pump after shutting down; The water pump should remain in working condition throughout the entire production process and should not be stopped to prevent the material inside the barrel from decomposing and carbonizing due to the temperature rise of the barrel; The asbestos hood of the main motor fan needs to be cleaned regularly to avoid excessive dust adhesion and blockage of the hood, which may cause insufficient heat dissipation of the motor and trip due to overheating.
4. Timely clean the dust, tools, and debris on the surface of the unit.
5. Strictly prevent metal or other debris from falling into the hopper to avoid damaging the screw and barrel. To prevent iron impurities from entering the barrel, magnetic suction components or magnetic frames can be installed at the feeding port of the barrel to prevent impurities from falling in. The materials must be sieved in advance.
6. Pay attention to the cleanliness of the production environment, and do not allow garbage and impurities to mix into the material and block the filter plate, which will affect the product output, quality, and increase the resistance of the machine head.
7. The gearbox should use the lubricating oil specified in the machine manual and add oil according to the specified oil level. If the oil level is too low, the lubrication will be insufficient, which will reduce the service life of the parts; Excessive oil, high heat generation, high energy consumption, and easy deterioration of oil can also cause lubrication failure and damage to parts. The sealing gasket (ring) of the gearbox oil leakage area should be replaced in a timely manner to ensure the amount of lubricating oil.