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Internal exhaust type parallel counter-rotating multi-screw extruder

A multi-screw extruder, exhaust type technology, applied in the field of plastic extrusion molding, can solve the problems of affecting product quality, extrusion capacity affecting output and cost, poor plasticizing performance, etc., to achieve large melting surface and energy saving effect Significant, increased eater and compressibility effects

Inactive Publication Date: 2013-01-23
金世源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor plasticizing performance will directly affect the quality of the plasticized product, and the extrusion capacity will affect the output and cost

Method used

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  • Internal exhaust type parallel counter-rotating multi-screw extruder
  • Internal exhaust type parallel counter-rotating multi-screw extruder
  • Internal exhaust type parallel counter-rotating multi-screw extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Such as figure 1 As shown, the extruder of the present invention includes a frame 1, a drive motor 4 and a reduction box 2 are arranged on the frame 1, and the reduction box 2 is connected to the distribution box 5 on its left side by a coupling 3, and the distribution box 5 on the distribution box 5 The feeding device 6 corresponds to the top of the hopper 16, the bottom of the hopper 16 corresponds to the feed end 7 of the barrel 9 on the left side of the distribution box 5, the discharge end 15 of the barrel 9 is provided with an end cover 14, and the barrel 9 has a built-in main The screw rod 11 and the auxiliary screw rod 10 opposite to the thread direction of the main screw rod 11 located at the feed end 7, the main screw rod 11 and the auxiliary screw rod 10 are respectively connected with the driving gear 17 and the driven gear 18 in the distribution box 5; the main screw rod 11 The left section is a hollow structure, and a built-in internal screw 12 whose le...

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Abstract

The invention discloses an internal exhaust type parallel counter-rotating multi-screw extruder and relates to extrusion molding equipment using at least two screw rods which are not meshed with each other. The internal exhaust type parallel counter-rotating multi-screw extruder has the advantages of high extrusion pressure, enhanced plasticizing capacity, reduced energy consumption, remarkable energy saving effect, good feeding performance, exhaust performance and material overflowing prevention performance, and convenience in screw machining, and is suitable for various plastic and rubber machining. The internal exhaust type parallel counter-rotating multi-screw extruder is structurally characterized in that the left end of a main screw rod has a hollow structure, the built-in left end is fixed on an inner screw rod on an end cover, the direction of threads on the inner screw rod is opposite to that of threads on the main screw rod, the right end of the main screw rod is internally provided with an exhaust channel which is communicated with an exhaust channel in the inner screw rod, threads on the main screw rod corresponding to an auxiliary screw rod are single threads, other threads on the main screw rod are double threads, a first through hole connected with the exhaust channel is arranged in the main screw rod between two screw arrises of the double threads, a plurality of second through holes are arranged between the two screw arrises of the double threads on the main screw rod outside the inner screw rod, the end cover is provided with a melt outlet communicated with a cavity between the main screw rod and the inner screw rod, and the center of the end cover is provided with an exhaust port connected with the exhaust channel.

Description

technical field [0001] The invention belongs to the technical field of plastic extrusion molding, and in particular relates to an improvement in the structure of extrusion molding equipment using at least two mutually non-engaging screws, that is, an internal exhaust type parallel counter-rotating multi-screw extruder. Background technique [0002] At present, in the field of plastic or rubber processing, the extruders used are divided into screwless extruders, single-screw extruders, twin-screw extruders, and multi-screw extruders according to the number of screws. Commonly used are: single-screw extruder, parallel co-rotating twin-screw extruder, parallel counter-rotating twin-screw extruder, conical co-rotating twin-screw extruder, conical counter-rotating twin-screw extruder, non-meshing Counter-rotating twin-screw extruders and stepped extruders. [0003] The single-screw extruder has the advantages of high head pressure and smooth extrusion, but the plasticizing effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/46B29C47/76B29C48/455B29C48/76
CPCB29C48/42B29C48/64
Inventor 金世源
Owner 金世源
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