SU1395539A1 - Centrifugal spreader of loose materials - Google Patents

Abstract

The invention relates to centrifugal spreaders of active substances, primarily designed for performing aeronautical and chemical works. The purpose of the invention is to reduce the power costs of scattering the substance while maintaining the uniformity of the coating of the treated surface. This is achieved by making the working wheel blades 9 multistage with installation between the steps of the shelves 1t, perpendicular to the plane of the blade 9, the upper steps of the 10 blades 9 are larger than the lower blades, and the upper edge of the 12 blades is inclined in the direction of rotation variable angle increases with distance from the wheel shaft. 7 il. c & (P SO with SD d SAZ SO FI

Description

113

The invention relates to centrifugal spreaders of substances that are primarily intended for performing aerial chemical works.

The aim of the invention is to reduce power consumption for the distribution of bulk materials while maintaining the uniformity of the coating of the treated surface.

Figure 1 shows the centrifugal |) spreader, side view; figure 2- | go, top view; on fig.Z - impeller blades in isometric; figure 4 is the same, side view; figure 5 - the speech aa in figure 4; figure 6 - section bb of figure 4; in fig. 7 is a section B-B in FIG. 4. .

The centrifugal spreader, mykh-substances, consists of the bunker 1, connected to the system 2 cutoffs, which is connected with the systems of dosage 3 and supply 4. The inner walls, the system 4 feeds form areas 5 {local load of the wheel la 6, shaft 7 which is connected to the drive 8. The impeller 6 consists of picks 9, which are made up of multi-stage, 10-stage separation shelves 11, fixed on the blade 9 perpendicular to its plane. Levels 10 in the upper part of the blade 9 Have a larger span than in the lower part. The upper edge 12 of the blade 9 (made inclined in the direction of rotation with a variable angle of inclination, increasing with distance from the shaft 7 of the impeller 6. Blades 9

the cutoffs through the dosing systems 3 and the feeds 4 are fed to the local loading areas 5 of the impeller 6, the shaft 7 of which is driven by the drive 8. First, the flow of matter is picked up by the upper edges 12 of the vanes 9, and then distributed to stages 10, from which it is thrown out surface to be treated. When the angle of inclination of the upper edges 12 of the blades 9 exceeds by 1-5 ° the angle of inclination of the velocity vector and the scattered granular material, which is composed of the velocity vector of incidence U of the granular substance in the coordinate system of the aircraft and the vector of peripheral speed and rotation of the impeller 6 abrasive wear of the blades 9 and a reduction in the fragmentation of particles of scattered bulk material.

Claims (1)

25 claims A centrifugal drop agent spreader containing feed and cut-off systems, an actuator, an impeller with a central bore and vanes interconnected by an upper ring and a shaft shaft in the lower part, characterized in that, in order to reduce the spreading power costs; while maintaining the uniformity of the coating of the treated surface, the blades are made of multi-stage shelves with separation, fixed 5 interconnected in the upper part of the perpendicular to the plane of the blades. Ring 13, and in the lower part fastened to the shaft 7 of the impeller 6. Centrifugal spreader loose substances is as follows. Dispersed dry substance from the hopper "pa 1 after opening the system 2 45 moreover, in the upper part of the impeller, the blade span is larger than in the lower one, and the upper edge of the blades is inclined in the direction of rotation with a variable angle of inclination increasing with distance from the wheel shaft. moreover, in the upper part of the impeller, the blade span is larger than in the lower one, and the upper edge of the blades is inclined in the direction of rotation with a variable angle of inclination increasing with distance from the wheel shaft. PhieN dzi9L L: A but 9 fie.Z )  . fie 7