SU1100208A1 - Screw-type feeder of pneumatic transport installation - Google Patents

Abstract

Screw feeder pneumotransport installation comprising a cylindrical body with a feed hopper and discharge the conical nozzle, a smaller base directed hydrochloric toward the discharge material in the pneumatic conveying conduit, and a drive screw Placing inside the casing, characterized in that, in order to increase productivity, it is provided with a guide with straps each having the shape of an isosceles triangle in cross section, fixed with bases on the inner side of the cylindrical housing on SG spaced apart parallel to axis of the housing, and wedge-shaped knives, mounted on the ends of the slats, and bent parallel to the surface of a cone, wherein schnek provided with a flat blade fixed to its last polu1vitke, placed in the conical nozzle. (Lu soo 00

Description

The invention relates to the field of mechanization of agricultural production and can be used in pneumatic installations for transporting haymaking materials for long distances. Known screw feeder pneumatic conveying installation, containing a cylindrical body with a hopper and a discharge conical nozzle, a smaller base directed in the direction of unloading material in a pneumatic conveying pipeline, and a driving screw, placed inside the body 1. The disadvantage of the known screw feeder is low productivity. The purpose of the invention is to increase productivity. The goal is achieved by the fact that the screw feeder of a pneumatic conveying installation, comprising a cylindrical body with a hopper and a discharge cone nozzle, with a smaller base directed towards the unloading of material into the pneumatic conveying pipeline, and a driving screw placed inside the body, are provided with guides, slats each cross-sectional shape of an isosceles triangle, fixed with bases on the inner side of the cylindrical body at an equal distance from each other parallel to the axis of the housing, and wedge-shaped knives mounted on the ends of the slats and curved parallel to the surface of the conical nozzle, while the auger is provided with a flat knife attached to its last semi-thread placed in the conical nozzle. FIG. 1 shows a screw feeder of a pneumatic transport installation, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 wedge-shaped knife; in fig. 5 - a flat knife. The screw feeder of the pneumatic conveying installation comprises a cylindrical body 1 with a loading hopper 2 and a discharge cone nozzle 3 connected to the pneumatic conduit. Inside the housing 1 there is a variable pitch screw 4 associated with the electric drive 5. The last half-turn of the screw 4 is located at the beginning of the conical nozzle 3. On the walls 1 parallel to the screw shaft 4 mounted on each side are equal slats 6, each in the cross section, the shape of an isosceles triangle, fixed with bases on the inner side of the cylindrical body 1. In the rotation zone of the last half-thread of the auger, wedge-shaped knives 7 mounted on the ends of the slats and curved parallel are placed The surface of the conical nozzle 3 is flawed, and their blades face the shaft of the screw 4. On the last half-thread of the screw 4, placed in the conical nozzle 3, a flat knife 8 is fixed, while the blades 7 and 8 are positioned relative to each other so that between their blades as the auger rotates, a gap is formed to avoid touching the blades of the said blades. The device works as follows. The screw 4 is driven by the rotation of the electric drive 5. The straw fed material coming from the hopper 2 into the cylindrical body 1 is moved by the screw 4 between the guide bars 6 towards the discharge cone nozzle 3. At the beginning of the discharge conic nozzle 3, it turns out in the zone of interaction of the knives 7 and 8, it is crushed and then, in a fragmented state, enters the cavity of the conical nozzle 3 not occupied by the screw, where it is compacted due to the incoming material, forming a plug, which l is in air tube. The wedge-shaped knives 7 are placed in the direction of movement of the material, they perform the simultaneous function of the guides, and the flat knife 8, fixed on the half-turn of the screw 4, shreds the material with the work of the screw 4. Thus, the wedge-shaped knives 7 and the flat knife 8 do not hinder movement material transported by the auger, and the degree of its grinding allows to obtain plugs with such a degree of density, which prevents the breakthrough of compressed air through the housing 1 into the atmosphere. The screw feeder of the pneumotransport unit allows it to be used in the pneumatic unit for transporting hay straw materials in the form of traffic jams over long distances, for example, from high altitude pastures to places of consumption or to transport arteries.

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Claims (1)

AUGER FEEDER OF AN AIR-TRANSPORT INSTALLATION, comprising a cylindrical body with a loading hopper and a discharge conical nozzle, with a smaller base directed; to the side of unloading the material into the pneumatic conveying pipeline, and a drive screw located inside the housing, characterized in that, in order to increase productivity, it is equipped with guide rails, each of which in cross section is an isosceles triangle, fixed with bases on the inside of the cylindrical housing equal distance from each other parallel to the axis of the body, and wedge-shaped knives mounted on the ends of the slats and curved parallel to the surface of the conical nozzle, with this to is equipped with a flat knife mounted on its last half-turn, placed in a conical nozzle.