SU749452A1 - Grain mixture separator - Google Patents

Description

(54) SEPARATOR FOR GRAIN MIXTURES

one

The invention relates to the separation of material into fractions and relates to machines for separating grain mixtures.

A separator for grain mixtures is known, including a duct, a screening surface made in the form of a sieve, a feeder, receivers of separation products 1

The disadvantage of this separator lies in its low orienting ability, as a result of which the mixture leaves the sieve, failing to separate. For the treatment of seeds of various crops, the replacement of sieve canvases is required, and the separating surface requires the cleaning of sieves from stuck grains in them.

The purpose of the invention is to increase the efficiency of the separation process and to enable the processing of seeds of different cultures.

This is achieved by the fact that the separator is provided with a plate pack mounted to move it relative to the sieve surface, the plates being located above the sieve holes.

FIG. 1 shows a separator, a general view; in fig. 2 - the same, top view; in fig. 3 - the same cross section; in fig. 4 - separator element.

The separator consists of a frame 1, to which at one end is pivotally attached a swivel base 2 with two sidewalls. The other end of the base is held by an adjusting screw 3. On the base, with the help of bearing housings, two axles 4 are fastened.

10 levers: two shoulders 5 and one shoulder 6. The double shoulders levers are interconnected by a pull 7 and attached to the drive eccentric connecting rod mechanism 8. In this mechanism, it is possible to change the length of the connecting rod 10 through the screw pair Y. The second shoulders of two shoulder arms the single-arm levers are also attached by brackets 11 to a lattice mill 12, on which a grooved sieve 13 is fixed. On the side walls of the base two more axles 14 are fixed, on which intermediate sleeves 15 and a plate pack 16 are mounted. The plates are mounted above the sieve along the longitudinal axes of sty and form with the edges of the openings of the sieve size of the working gap.

A bunker 17 for the grain mixture and a tray 18 for taking out small impurities from the machine are also installed on the separator frame. The separator works as follows. When the motor is turned on, the movement is transmitted to the eccentric-connecting rod mechanism 8. Levers 5 and 6 are oscillated from it. Next, this movement is transmitted through the brackets 11 to the sieve mill 12 and the grooved sieve 13.

At the same time, the mixture is directed from the grain bin to the separating surface. Under the action of oscillations and inclination of the sieve of the grain, the mixture moves down along the separation surface. In this case, the particles touch the fixed plates and, due to the inequality of the friction forces on the moving and fixed elements, they will unfold and longitudinally be oriented with the long axis relative to the sieve hole. If the slit size is smaller than the particle size, they will turn around its long axis and vibrate transversely to the orifice (see Fig. 4). The particles that have passed through the holes are lowered onto the tray 18 and removed from the separator, and the full seeds go sieves and collected in a special container.

In the separator, the angle of inclination of the sieve and the size of the working gap are adjusted. The angle of inclination of the sieve is adjusted by screw 3. The working size of the slit is adjusted by changing the length of the connecting rod due to screw pair 9. As the length of the connecting rod increases, the levers 5 and 6 rotate clockwise, the sieve mill 12 with sieve 13 goes down and the working size of the slit

increases. By reducing the rod length, the working size decreases.

The seizure of particles in the sieve hole is prevented by the fact that when the sieve is moved up the working size of the gap

larger particles are pushed out of the hole by fixed plates. When lowering the sieve down, the jamming of particles is also impossible, since the vertical component of the acceleration of the sieve is equal to the acceleration of the force of gravity.

In the inventive device, the fixed element performs the role of an activator, the introduction of which into the separation surface reduces the orientation of the particles relative to the aperture by a factor of four. As a result

sieve capacity increases by more than 6 times compared to a conventional sieve.

Claims (1)

Invention Formula A separator for grain mixtures, including a duct, a screening surface made in the form of a sieve, a feeder, receiving NICKY separation products, a vibrodrive, characterized in that, in order to increase the efficiency of the separation process and ensure the possibility of processing seeds of different crops, the separator is equipped with a plate pack, mounted so that it can be moved relative to the surface of the sieve, the plates being located under the sieve holes. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 441044, cl. B 07 B 1/40, 1968.