SU1708438A1 - Grain separators - Google Patents

Abstract

The invention relates to a technique for separating grain material on flat sieves, and may be. used in agricultural engineering. The purpose of the invention is to improve the performance of a flat sieve separator. On the frame 1 of the separator through adjustable by. the length of the suspensions 5 is fixed to a sieve mill (PC) 3 with a drive 4. On PC 3, by means of elastic gaskets 7, a flat sieve (P) 6 is installed with a device for cleaning it 9. On R 6 there is a complete vibration of the directional vibrator 8 that can be moved along the longitudinal axis P 6. When the separator is operating, the amplitude and frequency of additional oscillations P 6, the point of application of the disturbing force, and the length of the suspensions 5 are adjusted, which allows to optimize the separation process. machine building in particular, for separating devices for separating grain material into flat sieves. The purpose of the invention is to increase the productivity of a flat-sieve separator. FIG. 1 schematically shows a flat-bottomed separator, side view; in fig. 2 — node I in FIG. one; in fig. 3 - the same. top view. Flat-bed separator — includes frame 1, drive motor 2, a sieve mill 3 with a vibration drive 4, a loading device (not shown), suspension 5 peiueiHoro mill 3, attached to the frame 1. flat pptueTO 6 installed in a lattice mill 3 by means of elastic gaskets (coil springs) 7. On the sieve 6 a unbalance vibrator 8 of directional action is installed with the possibility of its movement in the direction of the longitudinal axis of the sieve. Under sieve 6, there is a cleaning device 9 with a drive (not shown in the drawing). The suspensions 5 of the sieve mill 3 are made adjustable in length by brackets 10 fixed with bolts 11 installed in oval holes 12. made in frame 1. Brackets 10 having the ability to move in the vertical direction. The plane sieve separator works as follows. ; 15 "^ SL) 00

Description

The cleaned material is fed to the beginning of the sieve 6 with the help of a loading device. It performs 3 oscillatory movements together with the sieve mill. Grain material, spilled through the sieve b and coming off it, is collected in trays (not shown). The surface of the sieve 6 is cleaned from stuck grains using the cleaning mechanism 9.

The length of the working sections of the suspensions 5 is adjusted steplessly by moving the brackets 10 in the vertical direction, which is accomplished by swapping the brackets 10 in the oval holes 12. At the same time, the maximum performance when using sieves with elongated holes is achieved with the maximum length of the suspensions 5 the position of the bracket 10), since the separation process on such sieves is most efficient when the material to be cleaned slides over the sieve. A longer length of the suspensions 5 provides a mode with particles sliding along the surface of the sieve 6. When using sieves with round holes, the best performance is achieved with the minimum length of the suspensions 5 (with the extreme lower position of the brackets 10), since the short length of the suspensions provides sieve modes with material toss Most advantageous for sieves with round 1 holes.

The design of the unbalance vibrator 8 makes it possible to independently regulate the amplitude and frequency of additional vibrations. The optimal combination of these parameters is different for different feeds of the material being cleaned to the sieve and for different types of seeds to be cleaned (for wheat, barley, etc.). By moving the vibrator 8 in the direction of the longitudinal axis of the sieve 6, it is possible to find the position of the point of application of the disturbing force at which the greatest performance is achieved.

With an increase in the supply of grain material to the sieve b (with a thickening of the layer of material on the surface of the sieve 6), it is necessary to shift the unbalance vibrator to the beginning of the sieve. This adjustment allows operation with a predetermined completeness of separation of the flow-through fraction at high feed rates.

Claims (1)

Claims Flat sieve separator comprising a frame fixed on the frame by means of suspensions a sieve mill, a flat sieve mounted on the sieve mill and a sieve mill vibration drive, characterized in that the separator is equipped with an unbalanced directional vibrator mounted for displacement along the longitudinal axis of the sieve, while the flat sieve is installed on the sieve mill by means of elastic gaskets, and the sling mill hangers are made adjustable in length. Thebes.2 Phi1.