Conveyors: power-driven – Conveyor having impinging fluid to feed – shift or discharge... – Having cleaning means
Patent
1996-09-17
1999-09-14
Valenza, Joseph E.
Conveyors: power-driven
Conveyor having impinging fluid to feed, shift or discharge...
Having cleaning means
198497, B65G 4500
Patent
active
059508035
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an arrangement to strip unwanted matter from belt bands in conveyor belt installations in the region of a driving and/or direction-changing roller of the belt band.
BACKGROUND OF THE INVENTION
Arrangements are known (DE-C 23 65 415) which serve to remove material which continues to adhere to the belt band downstream of the point of discharge.
It is also known to strip unwanted matter on belt bands directly on the driving and direction-changing rollers by means of rubber lips which are arranged in corresponding mountings on the frame which supports the belt band. The rubber lips abut, either at right angles or at an inclination, against the belt band, which is guided about the direction-changing or driving roller.
Finally, conveyor belt stripping means are known which comprise scraper blades (EP-OS 0 450 133) which are mounted in the supporting structure, which supports the belt band, directly on the discharge roller below the discharge parabola of the belt band or behind the discharge roller at the intake end of the return belt.
It is the object of the invention to provide an arrangement to strip unwanted matter from belt bands, which arrangement is suitable for use on belt bands directly in the region of a driving and/or a direction-changing roller of a conveyor belt installation and which operates reliably and without the danger of causing damage to the belt band.
SUMMARY OF THE INVENTION
Briefly according to this invention there is provided a system to strip unwanted matter from belt bands in conveyor belt installations in the region of a driving and/or direction-changing roller of the belt band, comprising a systems support which is attached to a supporting structure for the belt band and on which at least one stripping member is arranged. The stripping member comprises a scraper blade which is attached to a blade support, which scraper blade, in the ready-to-operate position, abuts against the belt band and comprises a torsion spring joint on which the blade support is guided in a spring-loaded manner and so as to pivot about a horizontal pivot axis. When the scraper blade encounters obstacles which rigidly adhere to the belt band, it can pivot away and subsequently again pivot back into the working position on the belt band. The blade support is pivotally supported by a pivot bearing having a limited pivot angle, such that the scraper blade which abuts against the belt band can adjust to changes in inclination of the belt band in the immediate contact region of the scraper blade by pivoting automatically. The torsion spring joint is attached to a plug-in means which is arranged in a holding means which is attached to the systems support. The longitudinal axis of the plug-in means intersects the belt band at a point which, in the direction of rotation of the roller, is disposed upstream of the contact line of the scraper blade.
The system according to the invention in particular has the advantage that good stripping results are achieved in that the spring tension of the torsion spring joint, which tension acts on the scraper blade, is sufficient to press the scraper blade against the belt band, which is supported on the roller, and in that, as a result of the limited capacity of the scraper blade to pivot. There is a continuous adjustment to position-changing sections of the belt band, and in that it is readily possible for the stripping member to carry out a yielding movement if this is required due to unevenness in the plane or surface of the belt band.
In addition, the system according to the invention has the advantage that it is a simple and readily maintained construction and is readily attached to a systems support and is readily detachable therefrom, for example in order to be exchanged.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred exemplified embodiments of the stripping arrangement according to the invention are illustrated in the drawing, in which
FIG. 1 is a side view of a first embodiment of the stripping arrangement comprising two
REFERENCES:
patent: 3994384 (1976-11-01), Reiter
patent: 4359150 (1982-11-01), Bowman et al.
patent: 4850474 (1989-07-01), Schwarze
patent: 5082106 (1992-01-01), Schwarze
patent: 5518107 (1996-05-01), Schwarze
Dillon, Jr. Joe
Valenza Joseph E.
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