Why Do Everyone Choose Nanjing Kelongweier Chemical Machinery Co., Ltd. Twin-screw Granulator?
Product introduction:
The SHJ series twin-screw granulator manufactured by Nanjing Kelongweier Chemical Machinery Co., Ltd. uses electric heating and water cooling to automatically control the ambient temperature of the barrel, and is equipped with forced feeding, vacuum exhaust and non-stop screen changing equipment. The double screw is driven by variable frequency variable speed, AC motor drive or DC variable speed, DC motor drive. The deceleration and the twin-screw drive are in the same box, and the overall dimensions are tight.
The safety coupling equipped with shear pins is selected to protect the screw and transmission box from damage due to overload.
Technical parameter table of SHJ series product twin-screw granulator:
Model specification: SHJ series product twin-screw granulator
Oil pump motor power 0.55KW, condenser model specification: SL-305, lubricating oil pump model specification: CB-B6
1. Equipment host motor
Equipment main motor: 75KW (DC motor), motor speed (MAX): 1500RPM
2. Screw element
Screw diameter: Φ62.4m, L/D=40:1
3. Barrel
The material of the barrel is 45 steel as the base, the eight-shaped hole is made of double alloy bushings, the wear-resistant alloy a-101 (Fe-Cr-Ni-B+Carbide) has a hardness of HRC60-64, and the barrel length is L=240mm/section.
Granulation unit:
1. Soft water circulation system
2. Heating system
The melting temperature thermocouple is used to measure the temperature of the melting environment of the material, and the pressure sensor is used to measure the pressure of the material.
3. Vacuum degassing device
4. Electrical control system
Electrical control cabinet control includes: temperature control system; drive system; interlocking and interlocking system
5. Interlocking control system
The oil lubrication system is interlocked with the main machine of the equipment, that is, the main machine of the equipment can be started after the oil pump is started. The feeding system is interlocked with the equipment host, that is, the feeder can be started only after the equipment host is started. Pressure system
The system is interlocked with the equipment host, that is, when the pressure is over, the equipment host and feeding will stop working. The current is interlocked with the equipment host, that is, when the current is over, the equipment host and feeding will stop working.
Auxiliary machine accessories:
Spiral automatic feeder and self-weighing, packaging and sealing equipment
Advantages of twin-screw plastic granulator:
1. All internal barrels and screw sleeve fittings of the twin-screw extruder are made of 316 stainless steel.
2. The feeder barrels are all open barrels with blind blocking blocks. With the guide rail feeder, you can feed in any section of the barrel you want.
3. Small footprint, high torque, high filling and favorable price.
4. The product has advanced technology, reliable quality, stable quality and stable operation.
The basic working principle of twin screw granulator:
The material passes through the feeding port and is rolled into a dough under the action of the rotating screw and rolls along the screw groove. Due to the shearing, compression and agitation of the screw, the material is further mixed and plasticized.
, The temperature and pressure gradually rise, showing a state of viscous flow, and pass the machine head with a certain pressure and temperature, and finally obtain the industrial product with the required shape.
Machine equipment processing technology of twin-screw plastic granulator:
1. The twin-screw granulator high mixer mixes the powder and pellets to a high degree;
2. The screw automatic feeder transfers and feeds the mixed materials;
3. The twin-screw pelletizing and melting machine performs continuous high temperature heating on the mixed pellets conveyed in, so that the pellets are in a molten state;
4. The barrel and screw of the twin-screw granulator are designed according to the principle of building blocks, and different combinations can be implemented as needed
The scope of application of twin-screw plastic granulator:
The twin-screw granulator can be widely used in gold dressing plants, coal mining plants and chemical industries, infrastructure and industrial mechanized foundry workshops for continuous, uniform and quantitative feeding and batching.
Installation and debugging procedures of twin-screw plastic granulator:
install equipment:
1. Read documents, drawings and other materials to understand the installation content and technical specifications and requirements of the main engine, auxiliary equipment, and electric control cabinet.
2. During the foundation construction, the wires and cables should be pierced and buried in the ground according to the final layout of the whole machine and the wiring requirements of the electric control cabinet.
3. For the installation and alignment of the main engine, the horizontal accuracy of the alignment plane is required to reach 0, 10/1000 in the longitudinal direction and 0.15/1000 in the transverse direction.
4. The alignment tolerance of the motor coupling is △Y≤0.2mm. Permissible verticality △a≤30'.
Machine equipment debugging program:
After the unit arrives, the demander will install the unit in place according to the technical documents provided by the supplier, and the supplier will send commissioning personnel to the demander to install the equipment and be responsible for the commissioning and installation and commissioning procedures.
. The demand side should have the conditions for commissioning. After the unit is in normal operation, the handover will be made, and the demander shall provide the user acceptance report to the supplier. The materials needed for the test run shall be provided by the demander.
The process conditions are mainly on the demand side, and both parties negotiate. Common precautions of twin-screw plastic granulator:
1. There is an electrical interlock between the main motor and the oil pump motor, that is, the oil pump motor does not start, the main motor cannot start; the main motor does not stop, and the oil pump motor cannot stop.
2. There is an electrical interlock between the main motor and the feeding motor, that is, the main motor does not start, and the feeding motor cannot start; the main motor of the feeding motor does not stop, and the main motor cannot stop.
3. The main motor control cabinet has over-current protection, which has been set before leaving the factory. In addition, it also has a mechanical protection device, generally a nylon shear pin safety coupling. When the design torque is exceeded
, The shear pin is cut off, and the transmission box stops working.
4. When the head pressure exceeds the set alarm value, the material pressure alarm signal light will be on and the machine will stop automatically.
5. It is strictly forbidden to bring any metal debris into the raw materials produced by the user.
6. When the machine is running, it is strictly forbidden to use metal objects to clean the material at the opening of the cylinder.