SU1258499A2 - Conveying screen - Google Patents

Description

The invention relates to the sorting of solid materials and is an improvement of the device according to the authors. St. No. 984505.

The aim of the invention is to increase the separation efficiency, self-cleaning and increase the number of emitted fractions by creating more than two sifting zones.

Figure 1 shows the principle of the conveyor screen; FIG. 2 is a section A-A in FIG. 1; on fig.Z - section bb in figure 1.

The conveyor belt contains drive device I, passing rolls 2 and 3j of the screening surface formed by endless strings 4-6, chute 7 for feeding the material, dot-10, located under the screening surface.

The roar conveyor works as follows.

The source material through chute 7 enters the first sifting zone. The smallest fraction is requested in the interstring gap formed by the alternation of strings 4-6 and retracted by chute 8, the roll of its twisting material is picked up by the moving strings 5 and

ten

58499

6 into the second sifting zone, where the interstring gap is larger than the first, since it is formed only by the strings 5 and 6, and the strings 4 are closed 5 on the pg intermediate roll 3. The passing strings 5 and 6 on the intermediate roll 2 are laid in the guides the grooves having a polygon in the radial section of the roll (figure 2), while the strings 4 and the roll 3 of the strings 5 closing on the roller 2 are laid in the grooves of the circular radial section, which ensures sufficient tension of the strings (figure 3) 1 Periodic shaking of the passing strings in the guide grooves of section similar to the action of the vibrator. After the first of the middle fractions is screened out in the tray 9, the material is carried by the moving strings 6 into the third screening zone, where the second is separated from the middle fractions and enters the discharge tray 10, and so on. The largest fraction itself by the strings 6 is taken out behind the tensioning device and discharged into the corresponding tray (not shown). The number of zones of a millet is thus one more than the number of intermediate rolls.

15

20

25

4-D

2

6-B

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, Compiled by V.Letrushin

Editor O. Golovach Tehred M. Morgental Proofreader V. But ha

Order 5058/8 Circulation 565 Subscription

VNShPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and Printing Enterprise, Uzhgorod, st. Project, 4

Claims (1)

SCREEN-TRANSPORTER by aut. St. No. 984505, distinguishing - ‘8