Hot plate type continuous vacuum drying system

Abstract

The invention relates to a hot-plate type continuous vacuum drying system, comprising a main machine and a cylinder of the main machine; a main shaft is arranged inside the cylinder of the main machine; a bed bracket is arranged on the inner wall of the cylinder; a plurality of layers of plate-style jacket heating devices are arranged on the bed bracket; the main shaft passes through central apertures of each plate-style jacket heating device and is arranged between the top and the bottom of the cylinder; the upper end faces of the plate-style jacket heating devices are material-bearing faces; the main shaft is provided with a plurality of branch arms and material turning plates are arranged on the lower end faces of the branch arms; and the plate-style jacket heating device is a plate jacket casing inside which a heat conducting pipeline is arranged; the plurality of layers of plate-style jacket heating devices can be at least divided into a high-temperature layer group, an intermediate-temperature layer group, a low-temperature layer group and a cooling layer group from top to bottom. The hot-plate constant vacuum drying system adopts the combined heating system adopting both drying and cooling so as to reduce the processes and largely enhance the manufacturing efficiency and the productivity; and simultaneously the drying system can realize the constant vacuum feeding and discharging, solvent recycling and disposal of harmful gas.

Description

technical field [0001] The invention relates to a hot plate type continuous vacuum drying system. Background technique [0002] Chinese Patent Literature Publication No.: CN1089351 discloses a multi-layer disk continuous vacuum dryer, which is mainly composed of a shell, a disk, a transmission shaft, a cutter head, a knife holder, a scraper, etc., and uses a combination of a multi-layer disk and a multi-layer scraper , so that the material can be in regular dynamic contact with the heating surface, evenly heated, continuous operation, and can be used in the occasion of drying powder materials. [0003] The disadvantage of the above-mentioned prior art is that: the discs of each layer adopt the same drying temperature, and for some easily oxidized materials, low-melting heat-sensitive materials, and non-bonding powders and crystals containing organic solvents or toxic and harmful solvents And amorphous materials, the above-mentioned dryer cannot perform continuous vacuum dry...

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Problems solved by technology

[0003] The disadvantage of the above-mentioned prior art is that: the discs of each layer adopt the same drying temperature, and for some easily oxidized materials, low-melting heat-sensitive materials, and non-bonding powders and crystals containing organic solvents or toxic and harmful solvents And amorphous materials, the above-mentioned dryer cannot perform continuous vacuum drying, because it cannot solve the problem of anti-oxidation of easily oxidized materials, the problem of dampness and adhesion of low-melting heat-sensitive materials, and it cannot handle the recovery of organic solvents or toxic and harmful solvents. Treatment and dedusting of exhaust gas and other issues

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