Carbon black masterbatch granulator | Black masterbatch granulator | Masterbatch granulator

Carbon black masterbatch granulation, color masterbatch granulation, and granulation machine
The carbon black masterbatch granulator is a granulator that processes conductive carbon black masterbatch.
Product introduction editor
Product introduction
Internal mixer elevator cone double feeder twin-screw granulator water ring granulator centrifugal dehydrator vibrating screen finished product silo
dense The mixing machine generally consists of an internal mixing chamber, two relatively rotating rotors, an upper ejector bolt, a lower ejector bolt, a temperature measurement system, a heating and cooling system, an exhaust system, a safety device, a discharge device and a recording device. The surface of the rotor has spiral ridges, and the number of ridges is two, four, six, etc. The cross-sectional geometry of the rotor is triangular, cylindrical or elliptical, and there are two types: tangential type and meshing type. . The temperature measurement system is composed of thermocouples, which are mainly used to measure the temperature changes in the mixing chamber during the mixing process. The heating and cooling systems are mainly used to control the temperature of the rotor and the surface of the mixing chamber chamber wall.
Automatic tipping bucket elevator
, loading motor
, upper and lower limit switches, special optimized arc design of slideway, smooth and reliable transportation.
The lifting hopper is made of stainless steel, and each pot can carry the amount of material per pot.
, transport the lump material kneaded by the kneader to the cone double feeder.
. The elevator control system should be moved next to the internal mixer control
Cone double feeder
, AC motor, the speed control system adopts a frequency converter
, Feeding The twin screws are forced to unload, nitride chromium plating, the surface finish is high, the screw running direction is counter-rotating
, the surface of the feeder body is polished, chrome-plated, sturdy and durable
, the inner surface of the feeding hopper is polished, Chrome-plated, sturdy and durable
, push-pull type, easy to clean. The connection between the cone double base and the bed is screw-locked
The connection between the cone double feeder and the twin screw rod is Harvard type structure
Twin screw unit structure
1. Reduction box
) The deceleration and torque distribution parts are integrated into one, with a compact structure
) Needle roller bearings, radial bearings bearing the deceleration torque distribution system
) The gears are made of high-quality alloy materials and are manufactured with the precision of cylindrical gears. All gears The tooth surface is hardened by carburizing and quenching. Special gear grinding software is used to trim the tooth profile of the gear to ensure gear strength, uniform tooth load, high strength, low noise and low vibration
2. Screw
) The screw has a building block structure
) The material of the mandrel, the threaded element and the mandrel are connected by involute lines, which has high strength, large load-bearing capacity, and is easy to disassemble and assemble
) The material of the threaded element is high-quality high-speed tool steel, and is heat treated by high-temperature vacuum quenching
) Overall Hardness
) The screw head and cap connection are anti-thread connections to ensure a tight connection.
3. Barrel
) The material is steel as the base body, and the inner hole is made of high-quality double alloy bushing
) The first cylinder is the feed cylinder, and the sixth cylinder is the natural discharge cylinder. Gas cylinder, the ninth cylinder is a vacuum cylinder
The remaining cylinders are closed cylinders
) The cylinders are cooled by soft water
) The cylinders are connected by hexagonal high-strength bolts .
) The feeding area of the heating section is not heated, and other parts use high-quality cast aluminum heaters.
4. Soft water cooling system
) Cooling water pump function
) Soft water pipe is separated from the machine body for easy cleaning and maintenance
) Automatic water control solenoid valve, needle valve control
).Cooler table.
5. Vacuuming system
) Vacuum pump
) Vacuuming water tank is made of stainless steel
) Independent external type, easy to clean and maintain
6. Screen changing system
> )Hydraulic blocking automatic screen changing double station equipped with two porous plates including screen changer, hydraulic station, hydraulic cylinder, etc.
Carbon black masterbatch and mechanical editing
Selection of carbon black
Carbon black is the cheapest, best and most excellent UV stabilizer. If the carbon black particle size is very small (), the concentration of carbon black The general rule is .%+.%. Depending on the manufacturing method and use of carbon black, pigment carbon black is generally better used for plastic coloring, and its selection is basically based on the blackness that the product must achieve.
Selection of carrier
For the carrier of carbon black masterbatch, linear polyethylene with wide applicability is generally selected, mainly in powder form. , resin is used as a carrier, which is beneficial to the dispersion and processing of carbon black. It is more suitable for extrusion, injection molding and blown film, and can also be used after grafting. Carbon black masterbatch generally chooses a resin with a melt index similar to that of the plastic matrix resin as the carrier. It is best to choose a resin of the same system as the carrier.
Compatibility should be greater
Compatibility is the factor that determines the quality of black masterbatch. If the masterbatch is produced using scrap or regrind, it may contain contaminants or other non-meltable polymers. This will cause some unpredictable and difficult-to-control troubles, wasting the end consumer's time and raw materials. At this time, you can use base resin to produce high-quality masterbatch, which has good compatibility during the melting process. High-quality masterbatch can be produced using as well as other materials.
Equipment requirements for dispersion
Black masterbatch is produced using carbon black. Green black is a very difficult and dirty mixture that is dusty, lightweight and fluffy. Unless large-scale treatment measures are taken, it will stain machines and workers, making the working environment dirty. Because of this, it is generally chosen to use a resin carrier, that is, black masterbatch, to complete the pre-dispersion of carbon black. This resin carrier is clean, free flowing and easy to use. In addition, in addition to being dirty, carbon black also has a characteristic that it is difficult to disperse. If the raw carbon black is melted directly during injection molding, the coloring effect will be very poor. If the carbon black stripes and spots without dispersion are close to less pigmented areas, they will appear black. This difficult-to-disperse property also troubles color masterbatch manufacturers. The dispersion of black masterbatch is very poor. When the end user mixes or molds these black masterbatches, it performs only slightly better than carbon black, but the results are equally unsatisfactory. In order to achieve a stable high dispersion, high-level special equipment must be used: an internal mixer plus a twin-screw water ring unit. With sufficient dispersion strength, the internal mixer plus a twin-screw machine can completely mix the carbon black and the base resin. Realize continuous production.
Precautions for daily maintenance
Editor
, transmission system
Check the temperature rise of the motor and oil tank, whether the bearings are locally overheated, abnormal noise of the motor and gears, oil leakage, oil filter , the radial circular runout of the spline shaft and the contact gap with the screw end face.
Regularly clean the oil filter and remove the accumulated dirt at the bottom of the fuel tank, and refuel the lubrication points regularly.
After the new gear transmission box is run in, new oil should be replaced, and new oil should be replaced every operating hour thereafter.
Machine part
Name
Oil grade
Replacement interval
Internal mixer
Transmission part
No. gear oil
Hours
Cone double forced feeder
Distribution box
High temperature resistant butter (grease)
Hours
Elevator
Transmission box
No. gear oil< br/> Hours
Twin-screw host
Transmission box
No. gear oil
Hours
Screw dehydrator
Transmission box
No. gear oil< br/> Hours
Pelletizer
Bearings
High temperature resistant butter (grease)
Hours
Host
Check the smoothness and temperature of the cooling water (generally ℃), feeding conditions, cylinder temperature and pressure, and wear conditions of the screw and cylinder.
, Machine head
Dimensional loss of the porous plate, damage and corrosion on the surface of the flow channel, and whether blockage occurs, affecting the appearance and output of the product.
, Attachments
Check the operation of the cooling water tank, vacuum, motor, etc., and whether there is leakage in each sealing part.
During the use of the separation tank in the vacuum system, viscous matter will remain in the tank, so it needs to be stopped and cleaned regularly.
Cooling equipment and pipelines must be clean and free of suspended impurities in industrial soft water. Water filters and water tanks should be checked and cleaned regularly, kept clean, and replaced with new water.
Troubleshooting
Edit
Fault phenomenon
Fault analysis
Troubleshooting method
Main motor does not start
Power supply phase loss
Main contact The controller is not closed
The emergency stop switch is not reset
Check the fault display content of the frequency conversion display
Check the control circuit of the starting signal
The emergency stop switch is reset
When the main motor is running Sudden shutdown
Frequency conversion overload protection alarm of the hot-heating machine head
Machine head pressure exceeds the set value
Overload, overcurrent protection and other electrical protection
Check the alarm point (red light) on the control box position)
Check the machine head heater and whether the filter is blocked
Check whether foreign matter has entered the cylinder
The main motor is running but the transmission box does not rotate
There may be foreign matter entering the cylinder, and the load Too large
The safety pin in the coupling is sheared
Check the reason and replace the shear pin
The heater temperature is not controlled
When the actual temperature of the temperature control meter exceeds the set value, the heating The heater continues to work
The solid-state relay does not work
Check the heating circuit and heater
Replace the solid-state relay
When the actual value of the temperature control meter does not reach the set value, the heater is in normal heating state , start the water pump, the temperature drops rapidly when the solenoid valve is not opened
There is foreign matter in the solenoid valve and it is not reset
Clean the solenoid valve
When the machine is running, the temperature in a certain area remains high
Water tank The water temperature is too high
The solenoid valve cannot be opened
The one-way valve and pipeline are blocked
Check the cooling water
Check the disassembly and cleaning of the one-way valve and pipeline
Temperature control meter display
Thermocouple burnout
Check the thermocouple circuit and update the thermocouple
Carbon black masterbatch formula and index editing
Carbon black (,) %
(high content) %
%
Coupling agent%
Black wax%
White oil%
Antioxidant
%
Technical indicators
, Appearance* Spherical, smooth surface.
, carbon black content%
, melt index (/)
, moisture content (volatile content)%
, heat resistance grade
, migration resistance grade
, coloring strength %
Application scope editing
Carbon black masterbatch processing Conductive carbon black masterbatch processing
Production process editing
Carbon black masterbatch has strong tinting power and no Toxic, odorless, excellent dispersibility, good temperature resistance, and excellent UV shielding, it is made of resin, high-quality carbon black, dispersants, lubricants, etc., and is processed by twin-screws of a secret cone-cone double feeder.
Production process
Raw material weighing and proportioning, internal mixer, elevator, cone double feeder, twin-screw granulator, water ring granulator, centrifugal dehydrator, vibrating screen, finished product silo