A grooved barrel extruder

An extruder and barrel technology, applied in the field of grooved barrel extruders, can solve the problems of high energy consumption, low melting and plasticizing efficiency, etc., and achieve low energy consumption, improve melting efficiency, and high-speed and efficient extrusion. Effect
CN103770310BActive Publication Date: 2016-05-11BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2016-05-11

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Abstract

A grooved barrel extruder, the inner surface of the barrel liner (10) and the outer surface of the screw (13) are both cylindrical or conical; the volume of the barrel liner groove (11) is extruded along the The direction gradually decreases; the screw (13) is a separation type screw, the volume of the screw solid-phase channel (16) gradually decreases along the extrusion direction, and the volume of the screw liquid-phase channel (12) gradually increases along the extrusion direction; When the screw (13) rotates, the material in the barrel bushing groove (11) and the material in the screw solid-phase channel (16) always maintain friction between solid phases, and interface melting occurs at the screw melting section (21), and the molten The material is continuously dragged into the screw liquid-phase channel (12), the solid-phase material in the screw solid-phase channel (16) and the barrel liner groove (11) decreases, and the molten material in the screw liquid-phase channel (12) increases ; The completely melted material is re-collected to the screw groove (18) of the melting section of the screw, and the material is stably transported through the melt conveying section.
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Description

technical field

[0001] The invention is a grooved barrel extruder, which can realize high-speed and high-efficiency melting of materials, obtain higher extrusion output, and realize high-speed and high-efficiency extrusion of plastic products such as pipes, sheets, and special-shaped materials. Background technique

[0002] In a traditional smooth barrel single-screw extruder, the heat source for melting is the external heat source of the barrel and the external friction heat between the material and the inner surface of the barrel. Under the combined action of the two, the material at the inner surface of the barrel first melts , to produce a molten film, as the melting progresses, the main flight surface of the screw scrapes off the molten film so that the molten material gathers at the flight surface to form a molten pool, and gradually melts the solid phase in the screw channel, and the material melts mainly Occurs in the axial direction of the screw. The disadvantages ...

Claims

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