SU15800A1 - Dryer in the form of a cylindrical chamber - Google Patents

Description

The present invention relates to a drying apparatus in the form of a cylindrical chamber with a circular, closed motion cycle, with partial change and repeated heating of the incoming air from the outside to the outside. In this kind of apparatus, when drying various types of moisture materials, in order to form a larger evaporation surface, it tends, as far as possible, to break up the material. In this case, the drying is significantly accelerated if the drying air is passed, if possible, perpendicular to the evaporation surface, because due to the reflection of air particles, a vortex is achieved, rapidly changing with the ventilation of the wet material and the dry air penetrates into the pores of the latter.

This invention is achieved by the fact that the material being dried is arranged in a ring-like manner around the vertical or horizontal shaft of the drying apparatus's cylinder. The vents are mounted on it with one or more fan rotors with curved obliquely, relative to the geometric axis of the shaft, wings. This arrangement provides the air with both radon and tangential acceleration, which makes it possible to carry out its screw motion.

In the schematic drawing of FIG. Figure 1 shows a horizontal section through an apparatus for drying a ribbon-like material; FIG. 2 is a vertical section according to FIG. one; FIG. 3 is a horizontal sectional view of an apparatus for drying material on flat surfaces; FIG. 4 horizontal section with a screw fan for drying the material in vertical layers; FIG. 5 is a vertical section according to FIG. four; fit 6-horizontal section of the fan blade; FIG. 7 the same, in a modified form; FIG. 8-horizontal section of the apparatus with a centrifugal fan; FIG. 9 is a vertical section of FIG. eight; FIG. 10 is a vertical section of the apparatus for drying bulk materials; and FIG. 11 is a horizontal section through FIG. ten.

For drying a ribbon-like material, such as cloth, paper, etc., serves as shown in FIG. 1. and 2 dryers with a constant movement of dry air. The tapes 12 are received by an air-permeable drum 13, which rotates inside the casing 14.15 on the axles 16.16 bearings. Placed centrally on the drive shaft 17, the fan 18 passes air in the radial direction to the wet material. The wet receiving drum has a hole 19 in the middle of all its surroundings,

through which a part of air passes and with the help of a partition 30 is directed to the outer part of the material being dried, the same air particles, after wrapping the surface of the material being dried, return, flow through the hole 21 in the back; to the suction inlets 22 of the fan. This way creates a circular, closed and constantly repeating ush, its air movement. Air-heating tubes 23 are located between the fan and the cylinder, which serve for a constant flow of heat. Fresh air is supplied through the openings 24 of the housing at the axis, and the exhaust air is withdrawn through the opening 25 located on its outer cylindrical surface.

For drying the material on flat surfaces, a circular dryer (Fig. 3) is used, equipped with a casing 2c, 26 and a shaft 30 in the center. On the shaft there is a fan rotor 29 with conic-shaped wings 55.53. The latter are supplied with air by obliquely directed jets on the Garivoptal surface of the material located on horizontal annular shelves 27.27, which are placed in turn conically on rotating annular supports 88.28. Passing the shelf, the air, under the influence of the suction effect of the fan, is directed to the suction zone 55.55 at the shaft 30, where it is heated by steam pipes 54.54 and re-enters the same cycle. The movement of its apparatus receives from the motor 32 through the heart of the gear 31.

When the material is dried in vertical layers (Figs. 4, 5, 8 and 9), to reproduce the same air cycle, a fan can be used, either according to the principle of a type of fan (Fig. 4 and 5), or according to the principle centrifugal (Figs. 8 and 9), with the bend of the fan blades accordingly, the air can be transmitted forwardly along the rotor ring with multiple winding of the surface to be dried and heated multiple times.

At the same time, observations on the movement of air through channels 41 (Fig. 4) have established that the entry and exit of air along the axis direction is obtained when the blades 42 are fixed and at an acute angle to the cutting air and when the slope of the hypotenuse 43 of the blade 42 corresponds to a predetermined speed of passage air 44 at a speed on a circle 45. An arrow 46 indicates the direction of movement of the blade (Figures 6 and 7). If straightened, as indicated in FIG. 7, the rear end-47 of the blade, then the speed and direction of the incoming air along the axis of the air will change in accordance with the extension of the ends of the blade in a direction 48 more or less diagonal to the fan axis.

Thus, the air circulating continuously, as indicated by arrow 70 in FIG. 5 receives a spiral forward movement along the air line 49 (FIG. 4) and such movement can be adapted to the exchange required in the casing, i.e. appropriate inflow of fresh air.

FIG. 10 and 11 illustrate the use of a vertical cylindrical dryer for bulk material. In the casing 60, surrounding the dryer, there is a cylindrical organic on both sides with sheets of punched iron, a shaft 59.59 with stalls 58.58 at the top. Ring-shaped gas pipes 61.61 are placed between the shaft and the casing. . . On the centrally located vertical shaft 63 of the apparatus, one or several fan rotors 62 are mounted with air guiding surfaces 66 to form a spiral movement of air, each time twice passing through the mine with the material. In addition, the screw screw at the top of the shaft, the fan 62c creates a longitudinal upward movement of air, and below in front of the outlets 71.71 of the dried material, in the co-. Jack 60 also has an annular channel 72.72 for admitting fresh air, which simultaneously cools the dried material.

The subject of the patent.

Drying apparatus in the form of a cylindrical chamber with a circular, closed cyclone movement of air, with partial replacement and multiple heating, characterized by the fact that shaft 65 is installed inside the dryer cylinder, which coincides with its geometrical axis, on which one or more rotors are mounted 62

fans with wings curved obliquely in relation to the geometric axis of the shaft 63, in order to communicate to the air, except

A. And,

radial, as well as tangential acceleration, enabling its SCREW movement to be carried out.

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