Disc type drying machine

Abstract

The invention discloses a disc type drying machine in the field of conduction heat transfer drying devices. According to the disc type drying machine, a feeding opening is formed in the top of a barrel; multiple layers of material trays are arranged in the barrel; the number of the material trays is an odd number; a falling hole is formed in each of the material trays on the odd layers; a falling channel is arranged between each of the material trays on the even layers and the inner wall of the barrel; a rotary shaft is arranged in the barrel and provided with scraping mechanisms; a first heating device is arranged on the lower portion of each material tray; a heating bin is arranged below the material trays on the bottom layer and provided with a discharging opening; multiple second heating devices are arranged in the heating bin; a hot air inlet is formed in the side face of the barrel and connected with a hot air source; an air distributor is arranged on each swing support, and an air outlet of each air distributor right faces a material on the corresponding material tray; and water vapor outlets are formed in the top of the barrel. According to the disc type drying machine, the materials accumulated inside and outside can be dried uniformly, the contact area of the materials and heat can be increased, water can be fully evaporated, and the material drying effect can be improved.

Description

technical field [0001] The invention belongs to the field of conduction heat transfer drying devices, in particular to a disc dryer. Background technique [0002] In the Chinese patent database, the invention patent specification with the authorized announcement number CN 104089471 B discloses a cottonseed protein exhaust gas pre-drying tower and drying process. The structure of the pre-drying tower includes a shell, an air inlet pipe, an air outlet pipe, The material port, the material outlet, and the material tray, wherein the material tray is a horizontal hollow disc, which is connected to the shell through a bracket, and its left and right sides are respectively connected with the exhaust air inlet pipe and the air outlet pipe, and the central opening of the material tray is provided with a rotating shaft , the rotating shaft is not connected to the material tray, a reducer is installed at one end of the rotating shaft, and a circular hoop is arranged on the rotating sha...

AI Technical Summary

Problems solved by technology

When the pre-drying tower is working, the scraper on the rotating arm scrapes the material onto the material tray below, and the material is transferred from top to bottom, and the exhaust gas in the material tray dries the materials of each layer. The advantage is that the lack of air transfers heat to the hollow material tray, and the heat is used to indirectly heat and dry the materials on the material tray, and the materials are spread on the material tray, and the materials accumulated inside and outside absorb heat unevenly. The contact area between the internal material and the surface of the tray is small, resulting in less heat absorbed by the internal material, and the moisture is difficult to evaporate, which affects the drying effect of the material

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