RU208708U1 - MULTIFUNCTIONAL CALIBRATOR FOR HETEROGENEOUS MIXTURES - Google Patents

Abstract

The utility model relates to devices that separate bulk material by size and can be used in the calibration of grain and processed products in agriculture, the flour and cereal industry, as well as in the coal, mining, building materials and other industries. A multifunctional calibrator for heterogeneous mixtures, includes a loading tray 7, concave screening surfaces 2, a central channel 5, side channels 4, branch pipes for the output of separated fractions 5. What is new is that the screening surfaces 2 are made in the form of a cantilever mounted on a holder 6 in a row alternating with each other rectilinear 9 and curved 8 in the frontal projection by bars, curvilinear bars are formed by a smooth connection of alternately right and left semicircles with a radius r equal to half the width of the cross section of the separated component of the heterogeneous mixture, the gap ƒ between the rectilinear and curvilinear bars with cross-sectional diameters d are related by the ratio yami 0.85d≤ƒ≤1.5d, the curved bar is connected to the holder through a straight bar with a height hП equal to 1/3 of the height of the sowing surface of the NP, equal to the step of their arrangement h along the central and side channels, straight bars with a height hП connecting curved rods and holder, closed on top with a visor 7 with a height of NKi, are connected by the ratio 0.85hP≤NK≤hP.

Description

The utility model relates to devices that separate bulk material by size and can be used for sizing grain and processed products in agriculture, the flour and cereal industry, as well as coal, mining, building materials and other industries.

Known calibrator for heterogeneous mixtures containing a loading tray, concave screening surfaces, a central channel, side channels, outlet pipes of separated fractions (Patent of Russia No. 2121878, IPC B07V 1/04, 1998).

The calibrator can separate small and large impurities. The calibrator corresponds to the expression that determines the optimal parameters of the working bodies:

,

,

where h is the step of arranging the screening surfaces;

a - the angle of concavity of the screening surfaces;

- длина просевающей поверхности. Известное устройство показало недостаточно высокий уровень разделения, из-за того, что калибровка компонентов гетерогенных смесей возможна только по их толщине поперечного сечения, потому что во фронтальной проекции вогнутой просеивающей поверхности консольно закрепленные на держателе в ряд прямолинейные параллельные прутки образуют зазор между ними, способный разделять наименьший размер поперечного сечения выделяемого компонента, коим в частности для семян сельскохозяйственных культур является их толщина.

- length of the sifting surface. The known device showed an insufficiently high level of separation, due to the fact that the calibration of the components of heterogeneous mixtures is possible only by their cross-sectional thickness, because in the frontal projection of the concave screening surface, rectilinear parallel rods cantilevered on the holder in a row form a gap between them, capable of separating the smallest cross-sectional dimension of the emitted component, which in particular for seeds of agricultural crops is their thickness.

The technical objective of the utility model is to increase the efficiency of the multifunctional calibrator for heterogeneous mixtures.

The stated technical problem is achieved by the fact that in a multifunctional calibrator for heterogeneous mixtures, including a loading tray, concave screening surfaces, a central channel, side channels, outlet pipes for separated fractions, according to the utility model, the screening surfaces are made in the form of cantilevered mounted on a holder in a row alternating between are rectilinear and curved bars in the frontal projection, curved bars are formed by a smooth connection of alternately right and left semicircles with a radius r equal to half the width of the cross section of the separated component of the heterogeneous mixture, the gap ƒ between the rectilinear and curvilinear bars with cross-sectional diameters d are related by the ratios 0.85d≤ƒ ≤1.5d, the curved bar is connected to the holder through a straight bar with a height h _P equal to 1/3 of the height of the sowing surface H _P equal to their spacing h along the central and side channels, straight bars with a height h _P , connecting the curvilinear rods and the holder are closed on top with a visor with a height H _K and connected by the ratio 0.85h _P ≤N _K ≤h _P .

The utility model is illustrated by the drawing, which shows a multifunctional calibrator for heterogeneous mixtures.

The calibrator contains a loading tray 1, concave screening surfaces 2, a central channel 3, side channels 4, branch pipes for the output of separated fractions 5, a holder 6 straight 9 and curved 8 bars of the screening surface, a visor 7.

Multifunctional calibrator for heterogeneous mixtures works as follows.

The source material from the loading tray 1 flows by gravity into the central channel formed by vertically installed concave screening surfaces 2 with step h, on which a large fraction is separated due to the separation of the components of the heterogeneous mixture along their width. The screening surfaces are made in the form of rods cantilevered on the holder 6 in a row alternating between themselves rectilinear 9 and curvilinear 8 in the frontal projection. Curvilinear rods 7 are formed by a smooth connection alternately of the right and left semicircles with a radius r equal to half the width of the cross section of the isolated component of the heterogeneous mixture. Gap ƒ between rectilinear 9 and curvilinear 8 bars with cross-sectional diameters d are related by the ratios 0.85d≤ƒ≤l.5d. The curved bar 8 is connected to the holder through a straight bar 9 with a height h _P equal to 1/3 of the height of the sowing surface H _P equal to their spacing h. Rectilinear rods with height h _P connecting curvilinear 8 rods and holder 6 are closed on top with a visor 7 with height H _K and connected by the ratio 0.85h _P ≤H _K ≤h _P . The descent from the screening surfaces is removed from the calibrator through the corresponding branch pipe 5, and the main part of the passage, allocated on the first screening surfaces by gravity, enters the side channels 4, where the fine fraction is released. The radius r of the curvilinear 8 bars is smaller than in the central channel 3. The downstream and through passage fractions are removed from the calibrator through the corresponding nozzles 5.

Claims (5)

1. A multifunctional calibrator for heterogeneous mixtures, including a loading tray, concave screening surfaces, a central channel, side channels, nozzles for the output of separated fractions, characterized in that the screening surfaces are made in the form of a cantilever mounted on a holder in a row alternating between rectilinear and curvilinear in the front projections with bars. 2. Multifunctional calibrator according to claim 1, characterized in that curvilinear rods are formed by a smooth connection of alternately right and left semicircles with a radius r equal to half the width of the cross section of the isolated component of the heterogeneous mixture. 3. Multifunctional calibrator according to claim 2, characterized in that the gap ƒ between straight and curved bars with cross-sectional diameters d are related by the ratios 0.85d≤ƒ≤1.5d. 4. A multifunctional calibrator according to claim 3, characterized in that the curved bar is connected to the holder through a straight bar with a height h _P equal to 1/3 of the height of the sowing surface H _P equal to their spacing h along the central and side channels. 5. Multifunctional calibrator according to claim 4, characterized in that the straight rods with a height h _P connecting the curved rods and the holder are closed on top with a visor with a height H _K and connected by the ratio 0.85h _P ≤H _K ≤h _P .

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