Fine-screened grid
OwnerOlaf Grimmelinventor
Life of this patent
Estimating the term…
Abstract
Disclosed is a fine-screened grid having a screening grate. A slider is guided on the grid grate to remove debris therefrom. The slider is connected to a slider arm which, together with a guide lever, forms a knee lever. The configuration enables the slider to pass over large or heavy objects because it can be moved away from the screening grate as a result of the geometry and kinematics of the knee lever. The system can operate continuously without monitoring, because larger particles which cannot be carried by the slider and which collect at the beginning of the screening grate can be removed when convenient. Rinsing nozzles, which are disposed on the upper end of the screening grate, are provided in order to improve the transfer of retained particles from the slider to a capturing groove.
Claims21
1-12. (canceled)
A fine-screened grid, comprising a screening grate and a motor-driven slider, movable along an interior surface of the screening grate for clearing the screening grate, the slider being connected with a slider arm, disposed on a swivelable guide lever rotatably about a pivot with an end facing away from the slider, wherein the guide lever has a clearing position in which the pivot is positioned such that the slider rests against the screening grate, and a free position in which the pivot is positioned such that the slider is away from the screening grate, and wherein the swivelable guide lever is freely movable into the clearing position due to its weight and into the free positions by a force applied to the slider by material being cleared.
A clearing mechanism for a fine-screening grid, comprising:
- a screening grate dimensioned to prevent passage therethrough of selected particles;
- a slider movable along a surface of the screening grate to remove smaller ones of the selected particles, the slider having a clearing position against the surface of the screening grate and a free position displaced therefrom;
- a slider arm operatively connected to the slider at one end;
- a guide lever connected to another end of the slider arm with a pivot and to a swivel pin;
- and
- a motor operatively connected to the slider to move the slider along the surface of the screening grate,
- wherein a weight of the slider, the slider arm and the guide lever urges the slider in the clearing position, and passage over larger ones of the selected particles urges the slider in the free position.
Dependencies are inferred from the claim text.