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Device and method for fast drying after plastic extrusion pelletizing

An extrusion granulation and rapid drying technology, which is applied in the direction of drying gas arrangement, granular material drying, heating device, etc., can solve the problems of high energy consumption, long drying time, cross-linking affecting the quality of raw materials and products, etc., and achieve drying time Short, good drying performance, stable quality control effect

Inactive Publication Date: 2017-05-31
TIANJIN LAIWO VACUUM DRYING EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a quick drying device and drying method after plastic extrusion and granulation, aiming to solve the problems of long drying time and high energy consumption in the prior art, and the silane cross-linked polyethylene is prone to occur during the drying process. Cross-linking affects the quality of raw materials and products

Method used

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  • Device and method for fast drying after plastic extrusion pelletizing
  • Device and method for fast drying after plastic extrusion pelletizing
  • Device and method for fast drying after plastic extrusion pelletizing

Examples

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Embodiment 1

[0032] figure 1 with 2 It shows a rapid drying device after plastic extrusion and granulation of the present invention, including a drying chamber 1, a driving device 2, a screw conveying blade 3, a feed inlet hopper 4, a drying terminal outlet 5, an air outlet pipe 6, Microwave source 7, dry air preparation device 8, air supply pipe 9 and air supply port 10. The drying chamber 1 is a closed cylinder with both ends arranged horizontally. Specifically, the drying chamber 1 can be made of stainless steel plate into a cylindrical shape. And weld the sealing plate of the same material at both ends to form the drying chamber 1 . The drying chamber 1 is provided with a screw conveying blade 3, and the drying chamber 1 is provided with a drive device 2 for driving the spiral conveying blade 3 to rotate. Specifically, the drive device 2 includes a motor and a reducer, and is powered by an external power supply to generate power. , through the transmission connection with the screw c...

Embodiment 2

[0039] Such as figure 1 A method for drying silane cross-linked polyethylene particles using a quick drying device after plastic extrusion and granulation, comprising the following steps:

[0040] (1) The silane cross-linked polyethylene passes through an extruder into a strand, first passes through a cooling water tank to cool down, and then is cut into small particles by a pelletizer;

[0041] (2) The granulated pellets after granulation are transported to the feed inlet hopper 4 of the microwave rapid drying device through a blower fan, and further enter into the drying chamber 1;

[0042] (3) The driving device 2 drives the screw conveying blade 3 to rotate, so that the particles move from the feed inlet hopper 4 to the drying terminal outlet 5;

[0043] (4) Turn on the microwave source 7 to heat the particles, and turn on the control valve 13 on the dry air production device 8 to supply dry air to the drying chamber 1 .

[0044] Preferably, the air produced by the dry a...

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Abstract

The invention discloses a device and method for fast drying after plastic extrusion pelletizing. A drying chamber is a transversely-arranged cylinder with two closed ends. A spiral conveying blade is arranged in the drying chamber. A driving device used for driving the spiral conveying blade to rotate is arranged outside the drying chamber. A feeding port hopper is arranged at the upper portion of one end of the drying chamber, and a drying terminal discharging port is formed in the lower portion of the other end of the drying chamber. Multiple microwave sources and multiple air outlet pipes are arranged at the upper end of the drying chamber in the length direction of the drying chamber. Multiple air supply openings are formed in the lower end of the drying chamber in the length direction of the drying chamber. The air supply openings are connected with a dry air producing device through an air supply pipe. A micro drying method is adopted for silane crosslinking polyethylene particles through the above micro drying device, so that the total energy consumption is reduced by 80% or above, and the production cost is reduced; the drying time is short, and the drying performance is good; no noise is generated in the drying process; and the quality is stably controlled and is not affected by environment weather changes.

Description

technical field [0001] The invention belongs to the technical field of drying equipment and drying methods, and in particular relates to a quick drying device and drying method for extruded and granulated plastics. Background technique [0002] Silane cross-linked polyethylene is a chemical substance. Ordinary polyethylene can be obtained by hydrolyzing and condensing the graft under the action of water and silanol condensation catalyst under the action of certain temperature and mechanical force in the presence of organic peroxides. Silane cross-linked polyethylene cable material is widely used as the insulating material of low-voltage power cables in my country's wire and cable industry. Compared with peroxide crosslinking and radiation crosslinking, this material has the advantages of simple manufacturing equipment, convenient operation, and low overall cost when manufacturing crosslinked wires and cables, and has become the leading insulation material for low-voltage cro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29B9/16F26B17/20F26B23/08F26B21/00
CPCF26B3/347F26B17/20F26B21/001B29B9/06B29B9/16F26B2200/08
Inventor 常晓宇李惠峰刘震穗
Owner TIANJIN LAIWO VACUUM DRYING EQUIP MFG CO LTD
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