Conveyor belt cleaner

• US 5,014,844 A
• Filed: 09/09/1988
• Issued: 05/14/1991
• Est. Priority Date: 09/14/1987
• Status: Expired due to Fees

• Current Assignee: Ronde Engineering
• Original Assignee: Ronde Engineering
• Inventors: Anttonen, Raine
• Primary Examiner(s): DAYOAN, DARRELL G
• Application Number:
  US07/242,305
• Time in Patent Office: 977 Days
• Field of Search: 198/497, 198/499, 15/256.5, 15/256.6
• US Class Current: 198/499
• CPC Class Codes: B65G 45/16 with scraper biasing means
• CPC Class Codes: Y10S 198/952 Heating or cooling

Abstract

A conveyor belt cleaner is disclosed which comprises a body with cleaner elements attached side by side to the body, each cleaner element consisting of a blade, a blade holder attached to the body and a torsion spring element located between the blade and the blade holder. The blade consists of an upper part which is pressed against the underside of the return belt of a conveyor belt and a lower part which is disposed at an angle relative to the upper part and attached to the torsion spring element. The blade is of uniform width from its lower edge to the upper edge which presses against the conveyor belt.

Claims

1. A conveyor belt cleaner comprising a body and cleaner elements attached side by side to the body, each cleaner element consisting of a blade, a blade holder attached to said body, a torsion spring element located between said blade and said blade holder, and heating element means disposed in contact with each said blade, each said blade consisting of an upper part having an upper edge which is adapted to be pressed against the underside of a return belt of a conveyor belt, and a lower part having a lower edge, which lower part is disposed at an angle relative to said upper part and attached to said torsion spring element, each said blade being of uniform width from the lower edge to the upper edge thereof, and each said blade having a sheltered rear surface, said heating element means disposed i contact with said sheltered rear surface of each said blade.

2. A conveyor belt cleaner according to claim 1, wherein the blade is made in one piece and the lower part of said blade is so inclined, in operation, relative to vertical that material scraped off from said belt will gravitate down and away from said blade.

3. A conveyor belt cleaner according to claim 1, wherein said sheltered rear surfaces of said blades constitute a continuous wall and said torsion spring element, blade holder, heating element means and body are protected from material scraped off from said belt by being located under said sheltered rear surfaces of said blades and, relative to the direction of movement of said return belt, on the trailing side of said sheltered rear surfaces of said blades.

4. A conveyor belt cleaner comprising a body and cleaner elements attached side by side to the body, each cleaner element consisting of blade, a blade holder attached to said body and a torsion spring element located between said blade and said blade holder, said blade consisting of an upper part having an upper edge which is adapted to be pressed against the underside of the return belt of a conveyor belt and a lower part having a lower edge, which lower part is disposed at an angle relative to said upper part and attached to said torsion spring element, said blades being of uniform width from the lower edge to the upper edge thereof, and heating element means being disposed in contact with a sheltered rear surface of each said blade, and wherein said blades are provided with shield pipes for said heating element means, said shield pipes being attached to the sheltered rear surfaces of said blades, the ends of said pipes at the side edges of said blades being aligned with the centers of said torsion spring elements and slightly spaced apart from said side edges of said blades.

5. A conveyor belt cleaner according to claim 4, wherein said heating element means is an electric heating cable.

6. A conveyor belt cleaner comprising a body and cleaner elements attached side by side to said body, each cleaner element consisting of a blade, a blade holder attached to said body and a torsion spring element located between said blade and said blade holder, said blade consisting of an upper part having an upper edge which is adapted to be pressed against the underside of the return belt of a conveyor belt and a lower part having a lower edge, which lower part is disposed at an angle relative to said upper part and attached to said torsion spring element, said blade being of uniform width from the lower edge to the upper edge thereof and wherein said blade is provided with lugs attached to the rear surface of said lower part, a mounting hole in at least one of said lugs being square in form, and said torsion spring element being provided with a square tube having a hollow interior passing through the center thereof, said hollow interior of said tube being of the same form and dimensions as said mounting hole in each of said lugs, said blade being mounted on said torsion spring element by means of a key bolt which, over part of its length, has a square sectional form corresponding to said mounting hole in said lug and said hollow interior of said tube so that said bolt fits tightly therein.

7. A conveyor belt cleaning arrangement of the type for cleaning a conveyor belt having a belt return surface, said arrangement comprising:

an elongated member mounted in proximity to said belt return surface; and

plural cleaner elements mounted side by side to the elongated member, each cleaner element including;

a blade including an upper part having an upper edge, and a lower part having a lower edge, said lower part being disposed at an angle relative to said upper part,

a blade holder disposed on said elongated member and

torsion spring element means located between said blade and said blade holder and attached to said blade lower part, said torsion spring element means for pressing said blade upper edge against said return belt surface,

and wherein said blade lower portion includes means for defining at least one square hole; and

said torsion spring element means includes a hollow elongated tube having a central hollow cavity dimensioned and shaped in cross-section to correspond with said square hole.