Sweeping machine with dust extraction

• US 5,794,304 A
• Filed: 12/12/1995
• Issued: 08/18/1998
• Est. Priority Date: 12/13/1994
• Status: Expired due to Fees

• Current Assignee: Haller Umweltsysteme GmbH & Company
• Original Assignee: HET Haller Entwicklungs und Technologiegesellsaaft mbH & Company
• Inventors: Ritter, Eberhard
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US08/571,226
• Time in Patent Office: 980 Days
• Field of Search: 15/340.1, 15/340.3, 15/340.4, 15/346, 15/421, 15/331
• US Class Current: 15/346
• CPC Class Codes: E01H 1/0836 Apparatus dislodging all of the dirt by suction liquids or semi-liquids E01H1/108; combined with loosening by blowing E01H1/0863; for cleaning rails E01H8/105, E01H8/125; removing snow by suction E01H5/106, E01H8/08; Suction nozzles independent suction nozzles in mechanical dislodging-cleaning devices E01H1/0827; suction and blowing nozzles E01H1/0863
• CPC Class Codes: E01H 1/0845 with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers brushing installations per se E01H1/02; other loosening devices per se E01H1/105
• CPC Class Codes: E01H 1/0863 Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction liquids or semi-liquids E01H1/108; Combined suction and blowing nozzles

Abstract

A sweeping vehicle for pneumatic take-up of refuse, include a suction mouiece, connected via a first suction line with a refuse container. In order to ensure effective dust removal at the lateral broom independently of the time of year and without use of water, at least on ejector nozzle is provided, whose suction opening is disposed in the suction air intake area of the suction mouthpiece, and which may be connected to a second suction line.

Claims

1. A sweeping vehicl for pneumatically taking up refuse, including a suction mouthpiece (2) having a suction air intake area (9) and connected via a first suction line (4) to a mobile refuse container (6), and including a second suction line (5), connected at a suction end to a suction hood (3) at a lateral broom (7), and wherein air ejector nozzle (2) is connected to the other end of the second suction line (5), said ejector nozzle having a suction opening (8) disposed within the suction air intake area (9) of the suction mouthpiece (2).

4. The sweeping vehicle according to claim 1, wherein a resilient seal strip (11) is provided between the suction mouthpiece (2) and the ejector nozzle (1).

5. The sweeping vehicle according to claim 1, wherein the suction mouthpiece (2) and the ejector nozzle (1) form an integral unit.

6. The sweeping vehicle according to any one of claims 1, 4, or 5, wherein a blower nozzle (12) in the region of said lateral broom (7) is provided, which is connected via a blower line (13) with the pressure chamber (14) of a suction blower (15) and which is so disposed that the air (23) emerging from the blower nozzle (12) is directed onto the opening (16) of a suction hood (3).

7. The sweeping vehicle according to claim 1 or 2, wherein the second suction line (5) is a flexible hose.

2. A sweeping vehicle for pneumatically taking up refuse, including a suction mouthpiece (2) having a suction air intake area (9) and connected via a first suction line (4) to a mobile refuse container (6), and including at least one ejector nozzle (1) having a suction opening (8) disposed within the suction air intake area (9) of the suction mouthpiece (2), wherein a second suction line (5) is provided connected at one end to said ejector nozzle (1) and at the other end to a suction hood (3), and wherein flexible air guide strips (10) are attached to the ejector nozzle (1) and have portions projecting beyond the edge of the suction opening (8).

3. The sweeping vehicle according to claim 2 wherein said air guide strip portions are slotted from below.