SU1463840A1 - Sweeping machine - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to municipal engineering, in particular to road sweepers for cleaning urban areas. The purpose of the invention is to reduce energy consumption and increase the quality of sweeping. The sweeper contains a base chassis 1, on which is mounted a bunker 2, chute brushes 5, a pick-up 6 connected to two pneumatic conveyors with a bunker. To create a vacuum of the hopper, a vacuum chamber 10 is mounted in which the Laval 19-21 nozzles are located. The inlet nozzle 19 is arranged coaxially with a nozzle 27 for compressed air coming from compressor 12. A main chamber 11 is mounted above the dilution chamber 10, communicating with the hopper through the filter 16. The stage of a multistage ejector is divided by a hermetic vertical wall into cavities connected to the main chamber by means of valves 32. The exhausted compressed air from the ejector is directed to the outlet nozzle 29 directed toward the cylindrical brush 37. 3Cp f-ly, 5 ill. . . (/

Description

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Claims (4)

Claim 1. A sweeper-truck containing a hopper for estimating with a filter mounted on the base chassis, a tray and cylinder brushes, a pneumatic conveyor connected to the hopper, a device for creating a vacuum in the hopper, a compressor, a water tank connected through a pump with nozzles, characterized in that , in order to reduce energy consumption and improve the quality of sweeping, it is equipped with a blowing nozzle mounted on the underside of the chassis and placed in front of the cylindrical brush in the direction of travel, oriented in its direction, and the device for creating rarefaction is formed by the main chamber in communication with the cavity of the hopper through the filter, a rarefaction chamber separated from the main horizontal wall placed in the rarefaction chamber by a multi-stage ejector, the inlet end of the first stage of which is in communication with the compressor, the outlet end of the last stage with a blowing nozzle, each the ejector stage is isolated from adjacent vertical walls dividing the rarefaction chamber into cavities in communication with the main chamber through openings that are made in the indicated the horizontal wall, blocked by valves. 2. Machine pop. 1, characterized in that the multi-stage ejector is made in the form of separate Laval nozzles coaxially mounted on the corresponding vertical walls, with the output of the previous one being covered by the input of each nozzle, and the nozzle joints are located in the said closed cavities. 3. Machine according to π, I, characterized in that the critical sectional area of the outlet nozzle is 3-5 times the critical section area of the inlet nozzle. 4. Machine pop.), Characterized in that in the walls of each nozzle behind their critical sections suction channels are made, oriented at an acute angle to the direction of movement of the compressed air. Horn! Phage 2