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A vented single-screw extruder for preparing high-viscosity explosives by solvent method

A single-screw extruder, explosives technology, applied in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of poor temperature exchange of materials, leakage of materials, and difficulty in cleaning residual materials, etc.

Active Publication Date: 2021-05-18
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the device of utility model CN201376340Y has the following disadvantages: (1) the problem of material leakage easily occurs in the exhaust section for highly viscous materials; Well, it is prone to hot spots; (3) The single screw is a cantilever structure, and it is difficult to clean up the residual materials after the production process

Method used

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  • A vented single-screw extruder for preparing high-viscosity explosives by solvent method
  • A vented single-screw extruder for preparing high-viscosity explosives by solvent method

Examples

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Embodiment 1

[0017] The vented single-screw extruder described in this embodiment is used for the preparation of high-viscosity propellants and explosives by the solvent method, and it is mainly used for compression-stretching molding of propellants with a solvent content of 30%.

[0018] see figure 2 , the single screw has a conveying section, a mixing section 1, an exhaust section, and a mixing section 2, and cooling water is passed inside the screw; the mixing section 1 and the mixing section 2 are diamond-shaped pins arranged in a spiral; The groove depth of the exhaust section is three times the groove depth of the conveying section, and the exhaust section is a double thread; the length of the exhaust section is 3D.

[0019] see figure 1 , the barrel is a vertical barrel; the barrel is a radially split structure, and there is an exhaust port at the position corresponding to the barrel and the exhaust section of the screw, and the inner wall of the barrel on the side of the exhaust ...

Embodiment 2

[0021] The vented single-screw extruder described in this example is used for the preparation of high-viscosity propellants and explosives by the solvent method, and it is mainly used for compression-stretch molding of propellants with a solvent content of 50%.

[0022] see figure 2 , the single screw has a conveying section, a mixing section 1, an exhaust section, and a mixing section 2, and cooling water is passed inside the screw; the mixing section 1 and the mixing section 2 are diamond-shaped pins arranged in a spiral; The groove depth of the exhaust section is three times that of the conveying section, and the exhaust section is a double thread; the length of the exhaust section is 5D.

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Abstract

The invention discloses a venting type single-screw extruder for preparing high-viscosity propellants and explosives by a solvent method, capable of effectively venting air while avoiding material escaping, uniform material cooling and avoiding screw bore sweeping. The device includes a single screw 3, a barrel 5, a reduction box 6, a hydraulic motor 7, a hydraulic opening device 2, and a frame 1. By setting a double thread on the exhaust section of the screw, and adding a C-type screw on the side of the exhaust port of the barrel The cavity is used to prevent material from escaping while exhausting. A mixing section is set on the outer surface of the screw to increase the contact area between the material, the screw and the barrel, and to prevent hot spots of the inner layer of material. A vertical barrel is used to prevent single-screw The chamber sweeping improves the safety of the high-viscosity propellant and explosive by the solvent method, and is convenient for cleaning.

Description

technical field [0001] The invention belongs to the field of explosives preparation, and relates to a vented single-screw extruder, in particular to a continuous ventable single-screw extruder for preparing high-viscosity explosives by a solvent method. Background technique [0002] At present, the preparation of high-viscosity propellant and explosives by the solvent method mainly relies on the intermittent molding process instead of the continuous single-screw stretching process. The thermal conductivity of the material inside is insufficient, and it is easy to form a hot spot, and the solvent is prone to flash explosion after being subjected to adiabatic compression, and then ignites the material to cause danger. Therefore, in order to realize the continuous production of high-viscosity propellant and explosives prepared by the solvent method, it is necessary to discharge the solvent free from the cellulose before the material is compressed, and consider the problem of ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B21/00
Inventor 刘晶王勇谢中元陈松雷全虎魏宗亮
Owner XIAN MODERN CHEM RES INST
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