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Exhaust type extruding single screw

A single-screw, exhaust-type technology, applied in the field of extruder parts, can solve the problems of adding hot air drying equipment, reducing production efficiency, increasing equipment costs, etc., to save drying time, improve production efficiency, and improve conveying capacity Effect

Inactive Publication Date: 2015-04-22
GUANGDONG DESIGNER MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires additional hot air drying equipment, and the drying process takes a long time (usually several hours), which not only increases equipment costs, but also reduces production efficiency

Method used

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  • Exhaust type extruding single screw
  • Exhaust type extruding single screw
  • Exhaust type extruding single screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Such as figure 1 As shown, this exhaust type extrusion single screw includes feed section 1, first compression section 2, first metering section 3, mixing section 4, decompression section 5, exhaust section 6, first Two compression sections 7 and a second metering section 8 .

[0022] The feed section 1, the first compression section 2 and the first metering section 3 are all provided with a main screw thread 9, and the screw groove depth (the depth of the screw groove 10) of the main screw thread 9 on the first compression section 2 decreases gradually from front to back . The flight width and the screw groove depth of the main flight 9 of each part on the feed section 1 are consistent, and the flight width and the screw groove depth of the main flight 9 of each part on the first metering section 3 are also consistent; the first metering The groove depth of the main flight 9 on section 3 is smaller than the groove depth of the main flight 9 on feed section 1 .

[00...

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Abstract

The invention discloses an exhaust type extruding single screw which is characterized by sequentially comprising a feeding section, a first compression section, a first metering section, a mixing section, a decompressing section, an exhaust section, a second compressing section and a second metering section from front to rear. The exhaust type extruding single screw disclosed by the invention is of an exhaust structure; through reasonable section, the conveying capacity, the plastifying effect and the exhausting effect of materials are effectively improved; a single-lead screw extruder adopting a screw lead has an exhaust function, and can be used for vaporizing and dissociating water contained in a plastic raw material in an extruding process to ensure that the water content of the prepared material accords with a requirement. According to an extruder adopting the exhaust type extruding single screw, the raw material does not need to be dried in advance before being charged in the extruder, so that the raw material drying time can be saved, the energy consumption is reduced, the equipment cost is saved, and the production efficiency is favorably improved.

Description

technical field [0001] The invention relates to parts of an extruder, in particular to a single-screw extruder with exhaust type, that is, the screw of a single-screw extruder with an exhaust function. Background technique [0002] In the plastic extrusion process, some plastic raw materials (such as PS, ABS, PET, etc.) have a high moisture content, if the moisture content is not reduced to a suitable ratio during the extrusion process, processing The finished products will have defects such as brittleness and yellow color due to the high moisture content of the material. Therefore, when processing products of such materials, it is necessary to try to reduce the moisture content of the material. [0003] In order to reduce the moisture content of the material, the most common method at present is to dry the plastic raw materials with hot air to reduce the moisture content to an appropriate ratio, and then add the dried plastic raw materials to the extruder for extrusion For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/60B29C47/76B29C48/76
CPCB29C48/53B29C48/535B29C48/766
Inventor 罗庆青叶镇波陈诗煌李意明
Owner GUANGDONG DESIGNER MASCH CO LTD
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