Feeding cylinder with single screw and double cones

Abstract

The invention discloses a feeding cylinder with a single screw and double cones, comprising a feeding cylinder. The feeding cylinder with the single screw and the double cones is characterized in that the feeding cylinder is internally provided with an inner hole for installing the single screw, a feeding hole in a shape of a horizontal eight is arranged at one side of the feeding cylinder and is adapted to a discharge hole of a double cone forced feeding machine, and a plurality of cooling grooves are arranged on the outer surface at one end of the feeding cylinder. The invention changes a structure of the traditional feeding cylinder which feeds materials in a mode of material deadweight into a structure of arranging the feeding hole at one side of the feeding cylinder to be adapted to the double cone forced feeding machine, thereby increasing the feeding quantity of the double cone forced feeding machine to the feeding cylinder, enhancing the feeding ability of a single screw extruder and further improving the productivity and the production efficiency. The invention has the advantages of simple structure, convenient use and low maintenance cost and can be widely suitable for installation of the double cone forced feeding machine.

Description

technical field [0001] The invention relates to a feeding cylinder of an extruder, in particular to a cone-double feeding cylinder used in a single-rod extruder. Background technique [0002] Single-screw extruder is one of the most widely used equipment in polymer processing, and is usually used to extrude pellets or form plates, tubes, wires, films and profiles. The working process of the single-screw extruder mainly includes feeding, conveying, melting (mixing or venting) and metering extrusion. In general, the single-screw extruder is fed with solid pellets, flakes or powders. For these materials, self-weight feeding (also called starvation feeding) can be used to achieve continuous feeding of materials. Feeding, that is: a feeding port is provided on the upper part of the feeding cylinder of the single-screw extruder, and a common feeding hopper is installed through the feeding port. The feeding cylinder of the single-screw extruder is installed on the single-screw Th...

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Problems solved by technology

[0003] Therefore, the current single-screw extruders are equipped with ordinary feeding hoppers or existing metering feeding devices, and their disadvantages are: when encountering lumpy materials, for example: when producing inner and outer screen cross-linked cable materials , the material fed into the single-screw extruder is the material after banburying. At this time, the material has been heated to a molten state, and what is presented is a large, agglomerated material. Ordinary feeding hopper or metering feeding device It is impossible to uniformly and continuously feed these lumpy materials into the single-screw extruder, thus affecting the normal production

[0004] In order to improve the feeding capacity of the single-screw extruder and overcome the above-mentioned defects, there are forced feeders on the market, but the feed inlet of the existing single-screw extruder feeding cylinder is not suitable for the installation of the forced feeder , especially not suitable for the use of conical twin-screw forced feeding machine, because the structure of the feeding cylinder and the conical twin-screw forced feeding machine do not match, reducing the consumption of single-screw extruder material capacity, reducing production capacity and production efficiency, and increasing maintenance costs

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