RU2305609C1 - Screening device - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: device comprises rotating cylinders provided with polymeric cell sides, front and back distributors, transmitting mechanisms, and frame. The cylinders receives chutes provided with screws. The front and back distributors are provided with means for supplying and discharging the grain material and admixtures.

EFFECT: enhanced efficiency.

3 dwg

Description

The present invention relates to machines for sorting grain mixtures according to the length of grains and can be used in agricultural production, flour and grain elevator and animal feed industry.

To separate short and long impurities, trimeric blocks are used, for example, ZAV-10.90.000A [1], containing rotating cylinders with a mesh inner surface, inside which grooves with screws, front and rear distributors, gears and a frame are located. The disadvantage of this trireme block is the same cylinder speed (the same kinematic mode K = ω ² · R / g) to isolate short impurities (puppet) and long impurities (oat), which leads to a decrease in the sorting efficiency, since the moment of short particles falling out of the cells and full grains is significantly different.

Known trireme block K-236A (Germany) [2], in which the puppet and oat-bore cylinders have a different (optimal) kinematic mode. The puppet cylinder has K _K = 0.58, and the oat cylinder has K _O = 0.65.

The disadvantage of this trireme block is the rapid wear of the steel mesh surface.

There is also a technical solution [3], which allows to increase by 1.5-2 times the service life of the K-236A indenter unit due to the use of a cellular surface made of a polymer material.

The disadvantage of this technical solution is the low efficiency of sorting grain mixtures for the release of short and long impurities due to the lower coefficient of friction of grains on the polymer surface compared to steel.

The problem that needs to be solved is to increase the efficiency of sorting the grain material along the grain length due to the optimal kinematic mode of the puppet and oat-billed trie cylinders made of polymer material.

The problem is solved with the help of a trier block containing a rotating puppet and oat-barreled cylinders with a polymer mesh surface, inside which there are grooves with screws, front and rear distributors, gears and a frame, while the kinematic mode of the puppet cylinder K _K = 0.6 .. .0.7, and oats - K _O = 0.8 ... 0.9.

Improving the efficiency of sorting is achieved by lifting short particles in the doll cylinder and full grains in the oatmeal cylinder to a height that provides a more clear fall out of the cells into the corresponding grooves.

Figure 1 schematically depicts a trimeric block, and figure 2 and 3 - the influence of the kinematic mode K on the efficiency of sorting.

The indenter unit contains a rotating puppet 1, breech 2 cylinders with a polymer mesh surface, inside which grooves 3, 4 with screws 5, 6, front 7 and rear 8 distributors are located. The rotation of the cylinders is driven by the engine and gears 9, 10. All this is mounted on the frame 11. The front 7 and rear 8 distributors have a loading neck 12, a grain pipe 13, estrus 14, 15, 16 for outputting short, long impurities and clean grain.

The working process of the trireme cylinder is as follows.

Grain material is loaded into the loading neck 12 of the inlet block and enters the honeycomb surface of the rotating doll cylinder 1. Short impurities are placed in the cell, raised to a certain height, thrown into the groove 3 and discharged by the screw 5 into estrus 14 of the short impurities. Grain material with long impurities, which did not fit into the cells, is discharged immediately from cylinder 1 and through grain wire 13 enters the rotating oatmeal cylinder 2. Grains of the main culture are stacked in the cells, lifted by the cylinder, thrown into the groove 4 and discharged by auger 6 into estrus 16 of pure grain . Long impurities that do not fall into the cells are immediately removed from cylinder 2 into estrus 15.

Experimental studies of the K-236A indenter block equipped with a polymer honeycomb surface showed (Figs. 2 and 3) that the optimal kinematic mode of the puppet cylinder is K _K = 0.6 ... 0.75, and that of the oat-shaped one is K _O = 0, 8 ... 0.9. Due to the higher kinematic values than in the prototype, the clearest separation of short and long impurities and the main grain is achieved and the task is carried out - the efficiency of sorting grain material is increased. The efficiency of cleaning grain material from short impurities increases from 65 to 67 ... 69%, and from long impurities from 55 to 68 ... 69%.

LITERATURE

1. Machines for post-harvest grain processing / B.S.Oknin, I.V. Gorbachev, A.A. Terekhin, V.M. Soloviev. - M .: Agropromizdat, 1987. S. 61-66.

2. Cellular K-236A, P-236A01, K-236A04 trier. Operating Instructions, GDR / Wuta, 5909, 4th edition, 1987.

3. Alagurov V.V., Lykov S.A., Rudakov B.M. Modern design and technological solutions in grain cleaning equipment .// Technique and equipment for the village. - 2002. - No. 2. - p. 9.

Claims (1)

Trier block containing rotating puppet and oat-barreled cylinders with a polymeric cellular surface, inside which there are grooves with screws, front and rear distributors, gears and a frame, characterized in that the kinematic mode of the puppet cylinder K _K = 0.6-0.75, and oat - K _About = 0.8-0.9.

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