SU918748A2 - Pneumatic dryer for pulvurized materials - Google Patents

Description

(54) PNEUMES DRYER FOR DISPERSE MATERIALS

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The invention is intended for the testing of the drying process of dispersed materials in various sectors of the national economy.

A pneumatic strainer of dispersed materials is known, comprising a spiral drying channel made in the form of two flat concentric spirals, the direction of winding which is opposite.

The lack of such a pneumatic dryer is not high enough the intensity of the drying process.

On the main. Avt. St. Ms 344244 is a known pneumatic dryer for dispersed materials containing two end caps and two flat concentric stphals with opposite windings located between them, which are provided with a loop-like element 2 in the place where the winding direction changes.

However, in this pneumatic dryer, it is not njpe provisional control.

The purpose of the invention is to provide automatic adjustment of the pneumatic dryer for a given performance.

This goal is achieved by the fact that an elastic sheath is attached to the slug of the end caps on the side of the spiral channel, forming a pneumatic chamber connected to the constant pressure source.

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FIG. 1 schematically shows the proposed pneumatic dryer; FIG. 2 the same, top view.

The pneumatic dryer contains end covers 1 and 2, flange 3, sheets 4 and 5.

15 The drying chamber 6 is formed by sheets 4 and 5 and covers 1 and 2. The cover 7 on the side of channel 6 is attached to an elastic sheath 7, forming a 1-. A lid with a lid 1 is a pneumocamera 8. The Pat30 of the felling 9 is used to supply heat-transfer agent, the nipple 10 is for introducing material, and the latruche 11 is for outputting gas and air weights. Pneumatic chamber 8 has a nozzle 1.2 391 for connection to a constant pressure chamber (not shown). The device works as follows. The dispersed wet material to be dried is fed through pipe 1O to the heat carrier flow, which enters through the pipe .9 The wet material is captured by the heat carrier and the gas suspension flow moves through the spiral channel 6. A pneumatic chamber 8 is provided, bounded by a rubber sheath 7. When the pressure in a pneumatic dryer decreases, due to some external reasons, it is drawn into the drying channel 6 by the pressure of gas flowing pneumatic chamber 8 through the pipe 12 and reduces the cross section of the helical channel 6, Automatic Clearing n and maintaining constant pressure in the duct 6 contributes favorably process run sushi ki. During the pressure equalization process, sheath 7 returns to its previous position. Maintaining a constant pressure in the channel 6, and, consequently, a constant speed reduces the adhesion of the material on the walls of the channel. At the same time, in order to turbulent the heat carrier and material and eliminate growths in the spiral channel 6, it is possible to provide a pulsed gas supply to the pneumatic chamber 8. In addition to automatically controlling the speed of the heat carrier and the material required during the drying process, the air dryer is tuned to any performance sizes. By changing the pressure in the pneumatic chamber 8, it is possible to provide intensive drying at different capacities. I. . . This pneumatic dryer is a highly efficient apparatus of continuous action and simple in its design. Ph o r u m u p re p re ss of the invention Pneumatic dryer for disperse materials according to the author, St. No. 344244, which, in order to ensure automatic adjustment of the pneumatic bearing for a given performance, is attached to one of the end caps on the side of the spiral channel an elastic sheath forming a pneumatic chamber connected to the constant pressure source. Sources of information taken into account during the examination 1. USSR author's certificate No. 282150, cl. F 26 B 17/10, 1970 2. USSR author's certificate No. 344244, kp. 26 At 17/10, 1972.

Claims (1)

Formula and Sample Pneumatic dryer for dispersed materials according to ed. No. 344244, which is repelled by the fact that, in order to ensure automatic adjustment of the air dryer to a given performance, an elastic shell is attached to one of the 25 end caps on the side of the spiral channel, which forms a pneumatic chamber with a cover and is connected to a constant pressure source.