Filtering-type spiral-belt stirring and drying machine

Abstract

The invention discloses a filtering-type spiral-belt stirring and drying machine. The machine comprises a shell (17) provided with a heating cavity (25), a heat preservation layer (12) is arranged onthe heating cavity (25), and a steam inlet / outlet is arranged; a spiral blade (15) is arranged in the shell (17), and the spiral blade (15) is fixed on a stirring shaft (22); an output port (6) is connected with the stirring shaft (22); a heating pipe (28) is arranged in the stirring shaft (22); the bottom of the stirring shaft (22) is fixed with the heating pipe (28); the heating pipe (28) is connected with an input port (21); the stirring shaft (22) is connected with a speed reducer (20) and is also connected with a rotary joint (19); the heating pipe (28) is connected with a inlet pipe (29)through the rotary joint (19); a top cover of the shell (17) is provided with a feeding port (23) and an air suction pipe (14); the air suction pipe (14) is connected with a filtering device (13), and a blowback pipe (5) is arranged in the filtering device (13). According to the invention, drying efficiency and material quality are improved.

Description

technical field [0001] The invention relates to a filter type ribbon stirring dryer. Background technique [0002] The vertical ribbon mixing dryer is filled with wet materials. During the internal mixing process of the mixer, a heating interlayer is arranged outside the container. The interlayer is heated by steam or heat transfer oil. The internal wet material is dried after being heated. The water vapor generated during the drying process needs to be timely pull out. In the process of water vapor being extracted, to prevent the powder in the wet material inside the container from being also extracted, it is common practice to configure a vacuum filter device on the top of the container so that the water vapor can be extracted, but the internal powder material will not be extracted. Such as figure 2 The existing filtering device shown has no heating insulation layer outside, only one filter cartridge, and the area of ​​the filter screen is limited. As a result, the inte...

AI Technical Summary

Problems solved by technology

As a result, the internal powder often clogs the filter screen, and the water vapor cannot be extracted

In this way, the filter screen is often disassembled and cleaned, and the whole process is cumbersome.

Since there is no external heating and insulation layer, when the water vapor is sucked into the filter device, the water vapor that is about to be pumped out will be liquefied and turned into water droplets when the water vapor is sucked into the filter device due to the drop of the external temperature, and will drop into the container again, affecting the quality of the material.

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