A pipe single-screw extrusion device capable of reducing backflow
A single-screw extrusion and shunt device technology, applied in the field of pipe extrusion equipment, can solve the problems of increasing countercurrent flow and reducing productivity, and achieve the effects of preventing increased countercurrent flow, preventing accumulation and reducing countercurrent flow
Active Publication Date: 2020-07-14
江苏大维塑料技术(集团)有限公司
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Problems solved by technology
[0003] The material is conveyed forward through the screw under the resistance of the die of the machine head, a part of the reflow is not further mixed and plasticized, and a part is extruded from the die of the machine head with a certain amount of constant pressure, because the material will bring the previous temperature to the machine head to make the temperature Agglomeration, the head pressure gradually increases, which will increase the counterflow and reduce productivity
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] see Figure 1-5 , the present invention provides a technical solution for a single-screw extrusion device for pipes that can reduce backflow: its structure includes a power box 1, a feeding barrel 2, a metering and feeding device 3, an extrusion barrel 4, a head 5, a flow diversion device 6, Base 7, screw rod 8, heater 9, power box 1 is installed on the base 7, the side of the power box 1 is connected with one end of the extrusion barrel...
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The invention discloses a pipe single-screw extrusion device capable of reducing reverse flow. The pipe single-screw extrusion device structurally comprises a power box, a material charging cylinder,a metering feeding device, a material extruding cylinder, a machine head, flow dividing devices, a base, a screw rod and a heater, wherein the power box is mounted on the base, the side surface of thepower box is connected with one end of the material extruding cylinder, the machine head is connected to the other end of the material extruding cylinder, one end, connected with the power box, of the material extruding cylinder, is communicated with the metering feeding device arranged at the upper part, the metering feeding device is connected with the material charging cylinder, the screw rodis mounted in the material extruding cylinder, the screw rod is connected with the power box, the heater is wound on the outer surface of the material extruding cylinder, and the flow dividing devicesare respectively arranged on two sides of the machine head. The pipe single-screw extrusion device disclosed by the invention has the beneficial effect that through the flow dividing devices, pressure relief can be performed when the pressure of the machine head is too high, the increase of the reverse flow is avoided, and the production efficiency is improved; and the pressure propped by the flow dividing devices can be changed through weights, so that the insufficiency of materials extruded from a die of the machine head is avoided.
Description
technical field [0001] The invention relates to the field of pipe extrusion equipment, in particular to a pipe single-screw extrusion device capable of reducing backflow. Background technique [0002] The plasticized extrusion of pipes can use a screw extruder. At present, polyethylene and polypropylene pellets are generally formed by a single-screw extruder. [0003] The material is conveyed forward through the screw under the resistance of the die of the machine head, a part of the reflow is not further mixed and plasticized, and a part is extruded from the die of the machine head with a fixed amount and constant pressure, because the material will bring the previous temperature to the machine head to make the temperature Accumulation, the head pressure will gradually increase, which will increase the counterflow and reduce the productivity. Contents of the invention [0004] The main purpose of the present invention is to overcome the deficiencies of the prior art and ...
Claims
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IPC IPC(8): B29C48/50
Inventor 陈丽璇
Owner 江苏大维塑料技术(集团)有限公司