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Double-level double-screw extruder

A twin-screw extruder, twin-screw technology, applied in the field of color masterbatch production equipment, can solve the problems of low production efficiency, poor coating effect, long process time, etc., to improve quality, shorten process time, and pelletize uniform effect

Pending Publication Date: 2018-10-23
SIYANG BAOYUAN PLASTIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above process, because the carrier needs to be pretreated before it can be used to manufacture color masterbatches with carbon black, it results in long process time, low production efficiency, high energy consumption, and certain pollution to the environment. In the process of masterbatch, since the carrier in solid state and other raw materials such as carbon black are fed into the extruder at the same time, when the carrier melts from solid to liquid and then coats other raw materials such as carbon black, the coating effect is not good. Defects that result in poorer end product quality

Method used

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Experimental program
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Embodiment approach 1

[0018] This embodiment provides a two-stage twin-screw extruder, such as figure 1 As shown, it is mainly composed of the first-stage twin-screw extruder 1, the second-stage twin-screw extruder 2, the side feeding mechanism 3, the filter 4 and the metering pump 5, and the first-stage twin-screw extruder 1 , the first feeding port 101 is located above the front-end barrel 1021 in the first group of barrels 102, the first twin-screw conveying screw 103 is located in the first set of barrel 102, and one end of the first twin-screw conveying screw 103 is located at the second One feed port 101 is directly below, and the other end is connected to the filter 4, the filter 4 and the metering pump 5 are installed at the extrusion port of the first-stage twin-screw extruder 1, and the metering pump 5 is located between the filter 4 and the second stage Between the feeding ports of the twin-screw extruder 2; in the second-stage twin-screw extruder 2, the second feeding twin-screw 202 is ...

Embodiment approach 2

[0023] This embodiment is a further improvement of Embodiment 1. The main improvement is that, in Embodiment 1, except that the carrier raw material is fed through the first feeding port 101, other raw materials such as carbon black are fed from the side feeding mechanism 3. The second feeding port 302 is fed in the front-end machine barrel 2011 in the second group of machine barrels 201 through the feeding bin 301, because the front-end machine barrel 2011 in the second group of machine barrels 201 is facing the outlet of the metering pump 5, the molten After the carrier raw material is output from the metering pump 5, the carbon black will be mixed in before it has time to be transported by the second feeding twin-screw 202 to have a certain flow rate, which is equivalent to when the carbon black is mixed into the molten carrier. In the front end barrel 2011 in the second group of barrels 201, it is in a piled state, which will cause uneven mixing of other raw materials such ...

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Abstract

The invention relates to the field of color master batch production equipment and discloses a double-level double-screw extruder. An extrusion opening of a first-level double-screw extruder communicates with a feeding opening of a second-level double-screw extruder. A filter and a metering pump are mounted at the extrusion opening of the first-level double-screw extruder, and the metering pump islocated between the filter and the feeding opening of the second-level double-screw extruder. A conveying bin of a side feeding mechanism communicates with a front end machine barrel or a middle machine barrel of the second-level double-screw extruder. According to the double-level double-screw extruder, after being molten, filtered and metered through the first-level double-screw extruder, a carrier enters the second-level double-screw extruder to be mixed with other raw materials such as carbon black, and extrusion and granulation are achieved; the technological steps are simplified; and production efficiency is improved. The carrier which is completely molten is good in wrapping effect for other raw materials such as the carbon black; product quality is improved; in addition, when the carrier which is completely molten is mixed with raw materials such as the carbon black, the twisting force in need is small; and energy consumption is lowered, and energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the field of color masterbatch production equipment, in particular to a two-stage twin-screw extruder. Background technique [0002] The raw materials for the production of color masterbatch are carrier and carbon black, etc. The current production method is usually to melt, filter and extrude the carrier through an extruder, and then cut into pellets through a pelletizer, and then combine the cut particles with carbon black The raw materials are re-fed into the extruder through the weighing scale, and the melting, extrusion and pelletizing operations are performed again to complete the manufacture of color masterbatch. The reason why the carrier needs to be melted, filtered and extruded in advance is because some carriers have a lot of impurities, such as iron wire, aluminum flakes and other metal insolubles, so they need to be melted and filtered by the extruder to remove them. impurities, and then enter the extruder togethe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C47/10B29C47/36B29C47/40
CPCB29B9/06B29C48/288B29C48/297B29C48/298B29C48/385B29C48/402
Inventor 徐毅明朱建国廖志祥
Owner SIYANG BAOYUAN PLASTIC MATERIAL