SU1680366A1 - Riddle case - Google Patents

Description

The invention relates to agricultural machinery, in particular to grain cleaning machines, and m. used in agriculture and food industry for cleaning and sorting seeds of grain crops. The purpose of the invention is to increase the production and quality improvement.

cleaning of grain mixtures due to the provision of unseparated and accelerated movement of particles of the grain mixture. The sieve mill contains a duct (K) 1 with a sieve (P) 3 connected to a fixed frame 8 on the side of the loading part by means of a suspension link 9 with a spherical hinge, which is adjustable along the length of the link. From the side of the unloading part, K 1 is connected to the frame 8 by means of an eccentric drive mechanism of oscillations. In this case, the suspension link is made telescopic, and the plane of rotation of the eccentric of the drive mechanism is aligned with the plane P 3. Moving the particles along P 3 is accompanied by intense reversals of the particles around their long axis. The amplitude of the transverse vibrations to the discharge end of K 1 decreases. This ensures the maintenance of optimal conditions for the orientation of the passage particles with respect to the holes. 1 il.

The invention relates to agricultural machinery, in particular to grain cleaning machines, it. can be used in agriculture and food industry for cleaning and sorting seeds of grain crops.

The aim of the invention is to increase productivity and improve the quality of cleaning of grain mixtures by providing unseparated and accelerated movement of particles of the grain mixture.

The drawing shows a schematic view of the reshetny camp, a general view ;.

Sieve mill consists of box 1. which has a loading area 2 with non-perforated surface, a sieve 3, tray 4 and tray 5 of the box. On the side of the loading part, the lattice mill communicates with a bunker-feeder (not shown), and on the side of the unloading part - with receivers 6 and 7 of the separation products.

From the discharge part side, the duct 1 is connected to the fixed frame 8 by means of a telescopic and lengthwise adjustable suspension link 9's with a ball joint 10.

From the side of the boot to the box

1 rigidly attached body 11, connected

with an eccentric drive mechanism of oscillations in the form of a bearing of an eccentric shaft 12. The plane of rotation

1680366 A1

1680366

eccentric drive mechanism combined with the sieve plane. The bearings of the eccentric shaft 12 are mounted on a frame 13, which is arranged to move in a vertical plane along an arc of a circle relative to the ball joint 10 and with rigid fixation in a certain position relative to the frame of the mill.

When the eccentric shaft 12 rotates, duct 1 at the attachment point of body 11 performs circular oscillatory motion in the sieve plane, with the sieve moving across the transverse plane along an arc of a circle relative to the ball joint 10, and moving the sieve relative to its longitudinal plane is provided with a telescopic suspension link 9 the distance from the housing 11 of the eccentric shaft of the drive mechanism to the discharge end of the box is the amplitude of the transverse oscillations decreases linearly, and in the center there is a ball o the hinge 10, it is zero, while the amplitude of oscillations in the longitudinal plane of the sieve remains constant and equal to the radius of the eccentric of the shaft 12.

The technological process of cleaning a heap, for example from large light impurities, as follows.

The original grain mixture is fed to the beginning of the non-perforated surface 2 of the duct, where under the action of oscillatory motion the layer acquires a vibro-fluid state, leading to a redistribution of particles by size and density throughout the layer thickness and the non-detachable movement of particles along an inclined surface.

The movement of particles along the inclined separating surface in its initial part will simultaneously be accompanied by intensive reversals of particles around their long axis and a return displacement of particles in the transverse sieve plane, which ensures the redistribution of particles throughout the layer thickness and intensive orientation of passing particles relative to the holes and their sieving.

As the grain layer moves to the discharge end, the thickness of the layer decreases due to the screening of the particles of the main crop, respectively, the resistance forces from the layer acting on individual particles decrease, as a result of a decrease in the amplitude of transverse oscillations

decrease and inertia

the forces acting on the particles in the transverse plane, which ensures the maintenance of optimal conditions

the orientation of the passage of the particles relative to the holes and their sieving.

By the end of the separating surface, only particles of large light impurities remain on it, which under the action of inertial forces in the longitudinal sieve plane move without separation from the surface and accelerated. Particles of large light and large heavy impurities through tray 4 enter the receiver 7. Sifted particles of the main culture through the tray 5 of the box enter the receiver 6.

The intensity of the inertial forces in the transverse plane along the length of the sieve is regulated by the length of the link 9.

Setting the angle of inclination of the separating surface, the degree of change in the amplitude of transverse oscillations along the length of the separating surface, the choice of the radius of the eccentric, the size of the sieve holes, depending on the changing properties of the original pile, provide high performance and quality of cleaning.

Combining the plane of rotation of the eccentric drive mechanism with the plane of the separating surface of the box when it is suspended to the frame by means of a telescopic link with a ball joint provides a continuous, oriented movement of particles along the separating surface, accelerated continuous movement of particles of impurities in the final section of the sieve, which provides higher performance and degree of cleaning a lot and especially from particles of impurities whose length is slightly different from the length of the seeds of the main crop, i.e., 1pr = (1, 5 ... 2.5) 1z of grain, such as oat seeds, as well as particles with a displaced center of gravity, such as scraps of interstice stalks at the end.

Claims (1)

Claim A sieve mill including a fixed frame, a sieve box connected to the unloading part of the frame by means of an adjustable length suspension link with a ball joint, and from the unloading part to an oscillating drive mechanism of vibrations, characterized in that, in order to improve performance and improve the quality of cleaning grain mixtures by providing unseparated and accelerated movement of particles of the grain mixture, the suspension link with a ball joint is made telescopic, and the plane of rotation of the eccentric is m nisms actuator is aligned with the plane of the sieve. ' ¹ 1680366