A brief analysis of the structural characteristics

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Brief analysis: structural characteristics of twin-screw extruder

the remarkable characteristics of the split parallel twin-screw extruder are: the barrel can be split, and the screw and the bushing in the barrel can be combined at will

1. Split barrel

the barrel of the previous twin-screw extruder is integral and cannot be opened. The split twin-screw extruder is a split type, which is composed of upper and lower barrel halves. The lower barrel half is fixed on the frame, and the upper barrel half is connected to the lower barrel half through worm gear reducer. At ordinary times, the upper half of the barrel and the lower half of the barrel are bolted tightly with two rows of bolts. When it is necessary to open the barrel, just loosen the bolts and turn the handle of the worm gear box to open the barrel

2. Building block screw and barrel

split twin-screw extrusion can carry out 3-point zigzag experiment, 4-point zigzag experiment, sheet metal tensile experiment, thick plate tensile experiment, strengthened steel bar tensile experiment, chain tensile experiment, fastener experiment, connecting rod experiment, change fatigue experiment, bending torsion composite fatigue experiment, interactive zigzag fatigue experiment, CT experiment, c2011 CT experiment The screw and barrel of gear fatigue test and other machine hosts adopt advanced building block design. From the 400 cases of the project, the screw has great potential for mechanical and electrical improvement. It is composed of various forms of screw blocks that are almost half a dozen or so sleeved on the mandrel. The inner bushing in the cylinder can be adjusted according to the different screw blocks, so as to flexibly combine the ideal structural form of threaded elements according to the process requirements such as material varieties, so as to realize the transportation of materials Plasticizing, refining, shearing, venting, pressure building, extrusion and other processes, so as to better solve the contradiction between the so-called universality and specificity of the screw, which is generally difficult to take into account, and achieve the purpose of one machine with multiple functions. Another advantage of the building block design is that the worn screw and cylinder components can be partially replaced, which avoids the scrapping of the whole screw or cylinder and greatly reduces the maintenance cost

l. The host twin-screw is of high-speed co direction meshing type, which can produce very strong and complex material transfer and exchange, shunt mixing, shear kneading and other control systems in various threads and mixing elements, which are widely used in the experimental machines of various manufacturers. These functions can be fully and freely adjusted and controlled by changing the screw configuration and operating process conditions to meet the requirements of various processes

2. Accurate measurement and reasonable feeding method are the key to strictly implement the formula, and also the first key to ensure product quality. According to the performance of materials and the needs of users, we are equipped with a variety of feeding methods, such as volume measurement, dynamic weight loss measurement, etc., to meet the needs of different products

3. Advanced control system. The extruder is equipped with an advanced and beautiful control system. Most of its control components are imported components with good quality and high sensitivity. The operating parameters of the host such as current, voltage, temperature, torque, etc. are very intuitive, so it is very convenient to operate, and the requirements for operators are not high

4. The system is equipped with wire drawing water cooling granulation, hot water cooling, hot air cooling and other granulation methods. It can be configured according to different materials and user requirements

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