SU755326A1 - Vibration separator deck - Google Patents

Description

The invention relates to the field of agricultural engineering, in particular, to machines for post-harvest processing of grain crops. In addition, it can be used in the chemical and mining industries for the separation of bulk materials into fractions according to a complex of physical and mechanical properties.

Known Deca vibratory separator for the separation of bulk materials on the complex of physical and mechanical properties [1].

The criterion for the separation of mixtures on this deck is a generalized feature - the limiting angle of elevation, character (referred by the physicomechanical properties of the mixture particles, which favorably distinguishes them from the point of view of the quality of separation from a number of other working bodies of the same purpose.

Flat deck with a longitudinal-transverse slope allow the separation of mixtures into several fractions. However, the performance of these decks is low due to collisions.

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made in the form of plots, the angles of inclination of which increase in the direction of movement of the material being processed [2].

The well-known deck allows the mixture to be divided into a sufficient number of fractions, corresponding to the number of stages (the number of elementary areas).

In addition, the technological process is carried out when the whole mixture moves in one direction, therefore there is no

¹⁰ counter-movement of the separated fractions and their mutual fascination, as a result of which the quality of separation of mixtures is improved.

These working bodies have a significant disadvantage. The separation of bulk materials on these decks occurs as a result of the difference in the trajectories of the individual particles of the mixture, which is determined by the physical and mechanical properties of these particles. With close physical and mechanical properties

^{The 20} separable mixtures of the particle trajectories differ little from each other, which requires, for a sufficient quality, the separation of mixtures of large areas of working surfaces of decks.

755326

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Thus, the famous decks have large dimensions.

The technological essence of this drawback is that technologically necessary longitudinal and transverse inclinations are established during the operation of the deck.

The processed mixture, under the influence of vibration effects, moves along the deck, and the lateral tilt shifts the mixture particles in the transverse direction. When passing through each elementary pad, the particles of the mixture each time are closer to the side receivers and are removed from the opposite end of the deck. Therefore, the average particle trajectories take the form of curves and part of the deck area does not participate in the work.

Obviously, as a result of irrational use of the working surface of the deck, its overall dimensions increase. However, it is impossible to avoid this disadvantage in the existing deck design.

The purpose of the invention is to reduce the size of the deck.

To achieve this goal, between the steps of the working surface grooves are alternated in the direction of their inclination.

FIG. 1 shows the structural layout of the deck, side view; in fig. 2 - the same plan view; in fig. 3 - the scheme of movement of particles with different physicomechanical properties through the steps of the new deck.

The deck consists of a plane 1 on which elementary platforms 2 are staggered. Between the steps are grooves 3 inclined in the transverse direction at an angle of%, and the direction of inclination of any two adjacent grooves is unequal (Fig. 1, sections A – A and B – B) .

When the machine is in operation, deck 1 is installed with a longitudinal elevation at an angle, in (Fig. 1). Particle A (Fig. 3) of a rounded shape, more elastic, less rough, being exposed to a vibration surface, cannot overcome the angle of elevation of the nth platform and makes movement along groove 3 in the direction of its inclination. Flatter, rougher and less elastic particles overcome the elevation angle of the ηth platform, finding themselves on the next step of the deck. Here (ana &

logically to the previous one) the particle А _g , without overcoming the angle of the π + 1 th platform, moves along the groove in the transverse direction in the direction opposite to the movement of the particle A ,. Particle A ₃ having overcome the angle /) _{n + 1} π + 1th platform turns out to be on the next deck stage, etc. The general view of the particle moving trajectories is shown in FIG. 2. In the case under consideration, the average particle trajectories are longitudinal straight lines.

In this case, the actual trajectory of a single particle oscillates near the average trajectory (straight line). This is due to the fact that, due to the variable inclinations of the grooves, when passing through each successive step of the deck, the particles of the mixture being separated are displaced in the transverse direction in the direction opposite to the direction of displacement of the particles at the previous step. Consequently, the flow of particles does not shift to one of the sides of the deck, but moves on average along the deck, occupying its entire area.

Obviously, in the case under consideration, the area of the deck ABCE) (Fig. 2) is used rationally (the entire area of the deck of the AVSI works under full load), which makes it possible to significantly reduce its overall dimensions with the same performance (see Fig. 2, where the area is ABC ¹ 0 'of the existing deck is shown with a dashed line).

Claims (1)

Claim Deca vibrating separator with a stepped working surface, made in the form of platforms, the slopes of which increase in the direction of movement of the processed material, characterized in that, in order to reduce deck dimensions, between the steps of the working surface are grooves alternating in the direction of their inclination.