High-speed Mixer in Twin-screw Pelleting Production Line: Indispensable Key Process Equipment
With the accelerated process of globalization and increasingly strict environmental protection requirements, polymer material manufacturers are facing unprecedented challenges: how to improve production efficiency, reduce energy consumption and meet the requirements of sustainable development without sacrificing quality?
The configuration optimization of the twin screw pelleting line is particularly important for international customers who are first trying to make new material.
Among them, high-speed mixer is the key equipment for raw material pretreatment, its function is far more than simple mixing, and it is the cornerstone of the efficient operation of the entire production process.
1. Process analysis of twin screw pelleting production line
The twin screw extrusion production line is the core equipment in the plastic modification field, supporting the processing of PS, ABS, PP, PE and other raw materials.
A complete production line consists of multiple precision links: weight-loss metering and feeding system → twin screw mixing → water-cooled strand pelletizing system.
The twin screw plastic pelletizer adopts a modular design, and the core components include a modular screw, a double-alloy cylinder bushing and a segmented temperature control system.
This design enables the equipment to adapt to different material characteristics and realize various processes such as filling, blending, reinforcement and reaction extrusion.
2. KEY ROLE OF HIGH SPEED MIXER IN PELLETING LINE
In the twin screw pelletizing production line, the high-speed mixer is not an indispensable accessory equipment, but a key link to ensure the efficient operation of the entire system.
Analysis of Operating Principle of High-speed Mixer
The high-speed mixer is provided with a mixing blade at the bottom and a cutter structure arranged above the vertical barrel wall at the side, so that the raw material powder and liquid additives rotate and rise along the centrifugal force of the barrel wall, and are guided to the central direction to fall down.
This repeated rotation, compression and shearing movement realizes the uniform distribution of materials in a short time.
Core requirements of twin screw pelletizer for raw material pretreatment
The twin screw extruder has very high requirements for feed quality and uniformity. Homogeneous premix prevents localized overheating, degradation or unmelt particles during extrusion.
High-speed mixer is used for raw material pretreatment, which can significantly improve the production efficiency of twin screw pelleting production line. The mixing time is short, and the dispersion and uniformity can be quickly achieved within 30 seconds to several minutes.
3. When a high-speed mixer is required for a twin screw pelletizing line
Material characteristic angle
When processing the filling system, such as the mixing of inorganic filler such as calcium carbonate and talc powder with the resin matrix, the high-speed mixer can disperse the filler aggregates through strong shear action.
For the flame retardant system, especially the engineering plastics added with bromine and phosphorus flame retardant, the high-speed mixer can realize the uniform distribution of flame retardant in the resin.
In glass-fiber reinforced systems, even though glass fibers are usually added directly to the melt via side feeders, uniform premixing of other components (resins, additives) is also important.
Process Demand Angle
When producing formulations that require the addition of a variety of liquid additives (such as plasticizers, lubricants, liquid dyes), the atomizing nozzle system of the high-speed mixer can uniformly disperse the liquid to the surface of the powder particles.
For the mixing of various forms of materials, such as flake, miscellaneous and viscous materials, it is difficult to achieve uniform distribution by traditional mixing equipment, but the dual-shaft high-speed mixer can effectively solve this problem.
4. Core values and performance advantages of high-speed mixer
Improved mixing quality and productivity
High-speed mixing granulator can complete multiple processes of mixing, mixing, granulation and rectification at one time in the same container, significantly shortening the process flow.
The high-speed mixer has short mixing period and high mixing uniformity, which can effectively improve the productivity of food and biotechnological health products. The product can be processed in a short time (about 1-2 minutes).
Reduce overall operating costs
High-speed mixer features low energy consumption, only 2-4kwh/t, which is very important for international customers pursuing environmental protection and high cost performance.
By reducing the scrap rate in the production process and improving the equipment utilization rate, the twin screw pelleting production line is equipped with a high-speed mixer to significantly reduce the overall cost in the medium and long-term operation.
5. Key points for operation and maintenance of high-speed mixer
Standardized operation process
Check whether the electrical circuit of each device is correct and intact before operation, and check the compressed air pipeline. When the power supply is connected, the test run shall be carried out first, the cover and the discharge valve shall be closed, and the compressed air shall be connected.
When operating under load, feed the granulating raw materials according to 1/2 to 2/3 of the volume to avoid overloading or insufficient mixing effect.
Scientific maintenance and service
Lubricate the high-speed mixer once a day. The whole machine shall be overhauled every half a year, the sealing parts shall be replaced, and the electrical circuit and components shall be checked.
Once the machine is used, if it is not used for a short time, the inner wall of the pot and the mixing slurry shall be carefully wiped; Anti-rust oil shall be applied when it is not used for a long time.
6. Win-WChoice of Environmental Protection and Economic Benefits
Improvement of resource utilization rate
The precise mixing of high-speed mixer ensures the accurate proportion of components in each particle and reduces the generation of defective products due to uneven mixing.
High-speed mixer and double-screw pelletizer can significantly reduce energy consumption during production and realize energy-saving production.
To adapt to the trend of environmental protection materials
With the rise of environmentally friendly materials such as bio-degradable and recycled materials, high-speed mixers have been outstanding in handling these materials, which often have special mobility and dispersibility.
The elastic cavity design makes it difficult for materials to be bonded to the vessel wall, reducing material residue and cross contamination, and is especially suitable for a small number of varieties of production models.
The efficiency optimization of the twin screw pelleting production line is like a carefully coordinated symphony, and the high-speed mixer is like the lead violinist in the band, although not always the most obvious, but determines the tone and quality of the whole music.
For international customers pursuing environmental protection and high cost performance, the configuration of appropriate high-speed mixer in the production line is not an increase in cost, but an investment in product quality and production efficiency.
It not only solves the technical problems of raw material pretreatment, but also provides reliable process guarantee for enterprises trying to produce new materials, making enterprises stand out in the increasingly fierce market competition.
