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Exhaust-type single screw extruder for preparing hyperviscous explosives and powders by solvent method

A technology of single-screw extruder and explosives, applied in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of difficult cleaning of residual materials, poor temperature exchange of materials, deep single-screw groove, etc., to reduce the temperature , Prevent material from leaking, increase the effect of contact area

Active Publication Date: 2019-05-21
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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  • Exhaust-type single screw extruder for preparing hyperviscous explosives and powders by solvent method
  • Exhaust-type single screw extruder for preparing hyperviscous explosives and powders 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 an exhaust-type single screw extruder for preparing hyperviscous explosives and powders by a solvent method. Gas can be effectively discharged while venting is avoided, the materials are uniformly cooled and screw sweeping is avoided. The device comprises a single screw 3, a cylinder 5, a reduction box 6, a hydraulic motor 7, a hydraulic opening device 2 and a rack 1. By arranging double thread screw at the screw exhaust section and additionally arranging a C-type cavity at the side of an air vent of the cylinder, gas is discharged while venting is prevented. By arranging a mixing section on the outer surface of the screw, the contact area between materials and the screw and the cylinder is increased, and hotspot of the inner-layer materials is prevented. By the vertical cylinder, sweeping of the single screw is prevented, and safety for preparation of the hyperviscous explosives and powders by a solvent method is enhanced. The device is convenient to clean.

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 Applications(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