Changeover device for controlling the movement of dosing frames
AssigneeDidier Engineering GmbH
InventorsHermann Schluter, Manfred Blase
Life of this patent
Estimating the term…
Abstract
A valve chamber which communicates through flue openings with bottom flues has therein a pair of dosing frames, each mounted on a pivot and movable thereby between a closed position against the openings and an open position withdrawn from the openings. Each pivot is attached to one end of an elongated eccentric member to the other end of which is attached a spring which urges the respective dosing frame to the closed or open position thereof. One or two pull rods are attached to the eccentrics to sequentially move the closed dosing frame away from the openings to the open position thereof, and to then move the open dosing frame to the openings to the closed position thereof.
Claims26
A changeover device for controlling the movement of a pair of dosing frames in a valve chamber, wherein each dosing frame is mounted on a pivot which is rotatable to move the respective dosing frame between a closed position in front of openings of flues communicating with the valve chamber and an open position withdrawn from such openings, said dosing frames being alternately movable between said respective closed and open positions thereof, said changeover device comprising:
- a plurality of eccentrics, one each adapted to be attached to a respective said pivot;
- means, attached to each of said eccentrics, for selectively pivoting said eccentrics, and for thereby moving the respective dosing frames between said open and closed positions thereof;
- and
- a plurality of spring means, one each attached to a respective said eccentric, for urging said respective dosing frames into the respective closed or open position thereof dependent on the position of said moving means.
In a system including at least one valve chamber communicating through flue openings with flues, said at least one valve chamber having therein a pair of dosing frames each attached to a pivot, said pair of pivots being pivotable to alternately move the respective said dosing frames between a respective closed position in front of said flue openings and a respective open position withdrawn from said flue openings, and a changeover device for controlling the movement of said pair of dosing frames between said respective closed and open positions thereof, the improvement wherein said changeover device comprises:
- a plurality of eccentrics, one each attached to a respective said pivot;
- means, attached to each of said eccentrics, for selectively pivoting said eccentrics, and for thereby moving the respective dosing frames between said open and closed positions thereof;
- and
- a plurality of spring means, one each attached to a respective said eccentric, for urging said respective dosing frames into the respective closed or open position thereof dependent on the position of said moving means.
Dependencies are inferred from the claim text.