Conveyor belt cleaning or scraping devices
OwnerWillem D. Veenhofinventor
Life of this patent
Estimating the term…
Abstract
A conveyor belt cleaning assembly (10) including at least one generally transversely extending cleaning member (20), engaging, in an operative position, a conveyor belt (14) surface to be cleaned. The cleaning member (20) is characterized in that over at least a short portion of its length, a lead-in surface is provided on its leading end (20A), such that it makes an acute angle with the belt. The belt cleaning member (20) is constructed of an abrasion resistant material and is flexible. In one embodiment, the flexible belt cleaning device (20) is resiliently biased in frictional engagement with the curved surface of the conveyor belt by a tension spring (30). In other embodiments, yieldable tension is developed by a counterweight (34) and alternatively, by a compression spring assembly (48).
Claims10
A conveyor belt cleaning assembly for cleaning a conveyor belt in a region where the conveyor belt is in contact with the curved surface of a pulley drum comprising, in combination:
- first and second support bars adapted to be mounted in an operative position in the contact region, said first and second support bars extending generally in alignment with the axis of rotation of the pulley drum and being spaced apart in the operative position;
- at least one elongated, flexible scraping member supported between the first and second support bars for engagement with the curved surface of the conveyor belt in the operative position, said elongated scraping member extending in a generally helical direction relative to the pulley drum when engaged with the conveyor belt in the operative position;
- and,
- bias means coupled to said scraping member for maintaining said scraping member in yieldable, thrusting engagement with the curved surface of the conveyor belt in the operative position.
A conveyor belt cleaning assembly for cleaning a conveyor belt in a region where the conveyor belt is in contact with the curved surface of a pulley drum comprising, in combination:
- first and second support bars adapted to be mounted in an operative position in the contact region, said first and second support bars extending generally in alignment with the axis of rotation of the pulley drum and being spaced apart in the operative position;
- an array of elongated, flexible scraping members supported between the first and second support bars for engagement with the curved surface of the conveyor belt in the operative position, each scraping member extending in a generally helical direction relative to the pulley drum when engaged with the conveyor belt in the operative position, the engagement of each scraping member with said conveyor belt defining a scraping course, the lateral span of each scraping course being less than the width of the conveyor belt to which the scraping members are applied, said elongated scraping members being laterally spaced whereby the scraping courses defined by adjacent scraping members overlap;
- and,
- resilient means coupled to said scraping members for maintaining said scraping members in yieldable, thrusting engagement with the curved surface of the conveyor belt in the contact region.
Dependencies are inferred from the claim text.