Double-screw extruder

A twin-screw extruder and screw technology, applied in the field of plastic machinery manufacturing, can solve problems such as limiting the scope of use, and achieve the effects of wide application range, important economic value and market promotion value, and stable pressure

Inactive Publication Date: 2011-06-29
吴汉民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, a twin-screw extruder with simple structure, reasonable design, and different lengths of the two screws has not been developed yet, which makes it difficult for the current twin-screw extruder to simultaneously achieve good twin-screw plasticizing performance and stable extrusion pressure. advantage, thus limiting the scope of use

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0022] see Figure 1 to Figure 2 , the twin-screw extruder in this embodiment includes a drive motor 1, a coupling 2, a distribution box 3, a reduction box 4, a barrel 5, a long screw 61, a short screw 62, an exhaust system 7, a hopper 8, a feeding The material system 9 and the frame 10, wherein, the distribution box 3 is provided with a driving gear, an intermediate gear, and a driven gear, the intermediate gear meshes with the driving gear, and the driven gear meshes with the intermediate gear, that is, the driving gear and the driven gear Matched, the driven gear can be driven to rotate by the driving gear. In the present invention, the distribution box 3 may only be provided with a driving gear and a driven gear, and the driving gear and the driven gear are engaged, that is, the driving gear and the driven gear are matched.

[0023] The drive motor 1, distribution box 3, reduction box 4 and machine barrel 5 in this embodiment are all installed on the frame 10, the reducti...

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PUM

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Abstract

The invention relates to a double-screw extruder, and belongs to the field of plastic mechanical manufacturing. At present, a double-screw extruder with simple structure, reasonable design and two screws of different lengths is unavailable. The double-screw extruder comprises a driving motor, a distribution box with a driving gear and a driven gear, a reduction box, a machine cylinder, an exhaust system, a hopper, a feed system and a machine frame, wherein the driving motor, the distribution box, the reduction box and the machine cylinder are arranged on the machine frame; the reduction box, is connected with the driving motor; the driving gear in the distribution box is connected with the reduction box, and is matched with the driven gear; the feed system is connected with the machine cylinder; and the exhaust system is arranged on the machine cylinder. The double-screw extruder is characterized by also comprising a long screw and a short screw which are arranged on the driving gear and the driven gear; and the long screw and the short screw are both positioned in the machine cylinder. The double-screw extruder has reasonable structural design, scientific layout, stable pressure and excellent extruding performance, and combines the advantages of a single-screw extruder and the double-screw extruder.

Description

technical field [0001] The invention relates to a twin-screw extruder, in particular to a twin-screw extruder with two screws of different lengths, not only applicable to parallel co-rotating twin-screw extruders and parallel counter-rotating twin-screw extruders , It is also suitable for conical counter-rotating twin-screw extruders and conical co-rotating twin-screw extruders, belonging to the field of plastic machinery manufacturing. Background technique [0002] Commonly used extruders can be divided into single-screw extruders, twin-screw extruders and multi-screw extruders according to the number of screws. At present, single-screw extruders and twin-screw extruders are used more in the market. many. In order to make the twin-screw extruder have good plasticizing performance, those skilled in the art always believe that the lengths of the two screws in the twin-screw extruder need to be set to be equal. For example, the publication date is May 24, 2006, and the publi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40B29C48/42B29C48/40
CPCB29C47/406B29C48/42B29C48/40
Inventor 吴汉民
Owner 吴汉民
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