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US 7,686,612 B1Granted
Rotary kiln seal
OwnerBarry Buteauinventor
Life of this patent
Estimating the term…
Abstract
An improved, heat resistant seal assembly for deformation compensation of rotary kilns having a plurality of integrated seal segments interconnected to form a biased expandable constrictive ring around a rotating drum, the seal segments being attached to a portion of a stationary in-feed or out-feed hopper of a kiln assembly, each seal segment assembly having a plurality of friction wear pads, the seal assembly forming a long lasting expanding and contracting sealing ring that prevents the buildup of material particles and escaping heat and gas from degrading the biasing components or interfering with kiln deformation compensation.
Claims17
A rotary kiln seal assembly comprising:
- a) a plurality of independent circular ring segment assemblies forming a circle around a rotating drum, each segment pivotal and translatable about a stationary mounting pin, portions of the segment assemblies maintaining contact with the rotating drum, each said ring segment assembly further comprising:
- i) a circular ring segment mounting plate having upper and lower radial edges, sides and front and rear faces;
- ii) a vertical slot centrally located relative to the sides and a longitudinal slot extending inwards from one side and a tang portion extending outwards from the opposite side;
- a plurality of individual sealing members attached to the mounting plate comprising a metal wear bar having a circular ring segment shape with a perpendicular plate attached at each end, and a plurality of friction blocks removable clamped to the front face of the mounting plate;
- iii) a plurality of elongated nuts having an external groove removably attached to the front face of the mounting plate adjacent each end;
- iv) a detachable cover plate having an “L” shape attached to the front face of the mounting plate in a manner whereby a portion of the cover plate covers and extends beyond the tang portion of the mounting plate;
- v) a plurality of clamping bars engaging the friction blocks having a perpendicular stop member and means for attachment to the front face of the mounting plate;
- and
- vi) a pin assembly comprising a threaded bolt, a first and second spacer, a ball bearing assembly, and a threaded nut, the bearing assembly translatable within the vertical slot;
- and
- b) a means for maintaining the segment assemblies in an interactive relationship and in self adjusting alignment relative to each other;
- and
- c) a biasing means connecting each of the segment assemblies to adjacent segment assemblies.
10 more elements
A rotary kiln seal assembly comprising:
- a) a plurality of ring segment assemblies independently pivotally and translatable mounted to a stationary body and interactive with each other defining an expandable ring encircling and in frictional contact with a rotating drum each of said ring segment assemblies further comprises:
- a) i) a circular ring segment mounting plate having upper and lower radial edges, sides and front and rear faces;
- b) ii) a vertical slot central located relative to the sides and a longitudinal slot extending inwards from one side and a tang portion extending outwards from the opposite side;
- c) iii) a plurality of individual sealing members attached to the mounting plate comprising a metal wear bar having a circular ring segment shape with a perpendicular plate attached at each end and a plurality of friction blocks located thereon;
- d) iv) a plurality of elongated nuts having an external groove removably attached to the front face of the mounting plate adjacent each end.
- e) v) a plurality of clamping bars engaging the friction blocks having a perpendicular stop member and means for attachment to the front face of the mounting plate;
- and
- f) vi) a pin assembly comprising a threaded bolt, a first and second spacer, a ball bearing assembly, and a threaded nut, the bearing assembly translatable within the vertical slot;
- b) a plurality of biasing members connecting each of the segment assemblies to adjacent segment assemblies;
- c) a plurality of sealing members clamped to each of the segment assemblies;
- and
- d) a cover plate attached to each of the segment assemblies extending over a portion of an adjacent segment assembly.
9 more elements
Dependencies are inferred from the claim text.