SU1346930A1 - Device for heating loose materials before drying - Google Patents

Abstract

The invention relates to the drying of friable thermolabile materials, for example, glass. The device comprises a working chamber 1 connected to a receiving bin 3, means for supplying heated air and a discharge bin. In order to intensify the process of heating and drying and reducing metal consumption, the working chamber I is made in the form of a paraboloid of rotation. The means for supplying heated air are a spiral manifold 4 installed at the upper part of the working chamber 1 with a slotted apparatus 5 inside and an injection nozzle 2 connected to the lower part of the working chamber 1. The discharge hopper 7 is located above the working chamber 1 and is connected to it using a central exhaust pipe 6. 2 Il. oo 4 C5 CO oo

Description

The invention relates to the drying of bulk thermolabile materials, such as grains, and can be used for pre-convective heating and drying of material, for example, in recirculating grain dryers.

The purpose of the invention is to intensify the process of heating and drying, reducing metal consumption.

FIG. 1 shows the device section; in fig. 2 is a section A-A in FIG. one.

The device contains a working chamber 1 having the shape of a paraboloid of rotation, an injection nozzle 2 is connected to the top of the paraboloid, a receiving hopper 3 is installed above the working chamber 1, and a spiral collector 4 with a slotted device 5 located inside it is located exhaust pipe 6, above which is installed the discharge hopper 7.

The device works as follows.

The heat carrier or the spent drying agent after the grain-drying process is carried out in the recirculation grain dryer is fed through the spiral manifold 4 through the slit apparatus 5 into the working chambers 1, where it turns into a high-speed vortex flow. Grain is fed into this stream from the receiving bin 3, which at high flow rates is intensively heated and dried beforehand in the working chamber. The weevils in the vortex flow of the coolant gradually descend to the bottom of the chamber, where they are entrained by the heat carrier

A tele that is simultaneously fed into the injection nozzle 2. With fresh coolant coming from nozzle 2, the grain is fed into the exhaust pipe 6 and pneumatically transported to the discharge bin 7. As the pipe is transported in the pipe, the weeds are finally heated and dried. The heated and dried grain material flows by gravity from the discharge hopper 7 to the dryer located adjacent to the preheater.

The device makes it possible to shorten the duration of heating of the grain, since the process is carried out at high flow rates, and to prevent the material from lagging.

Claims (1)

Invention Formula Device for preheating bulk materials before drying, consisting of working 0 chambers connected to a discharge 6yHKej rum using a central exhaust pipe, means for supplying heated air, a receiving bin located above the working chamber, characterized in that, in order to intensify the preheating and drying process and reduce metal capacity, the working chamber is made in the form of a paraboloid of rotation, and the means for supplying heated air are replaced by an injection nozzle connected to the top of the paraboloid and a spiral collector with a slot apparatus located inside it, m coiled collector is mounted in the upper part of the chamber. g: s Compiled by I. Tikhomirov Editor N. TupitsaTehred I. VeresK Director of A. Obruchar Order 4660/39 Circulation 635 Subscription VNIIPI USSR State Committee on Inventions and Discoveries 113035, Moscow, Zh-35. l ayiucKaa nab. 4/5 Production and Polegraphic Enterprise, Uzhgorod, acc. Project, 4 FIG. 2