Krupp Polysius Ag

Polysius Ag

Gert Tegtmeier

Manfred Strohbusch

Wolf Goldmann

Gerhard Kastingschafer

Wolfgang Triebel

Gunter Milewski

Andreas Halbleib

Pedro G Palma

Bernd Henrich

A reciprocating grate cooler has a plurality of grate plates mounted on a reciprocable support structure for conveying hot material longitudinally across a grate surface formed by the grate plates. The support structure has passages therein and an inlet for admitting cooling gases into the passages for delivery to the hot material. A stationary cooling gas delivery duct has an outlet adjacent the inlet of the support structure and both are provided with sealing frame plates mounted on the support structure and delivery duct, respectively, in generally parallel, closely spaced relation to one another to provide a wear-free dynamic air seal between the delivery duct and the support structure.

Reciprocating grate cooler

The invention relates to a cooler grate for a reciprocating grate cooler, with a plurality of grate plate supports extending transversely with respect to the cooler grate and constructed as hollow bodies, on which in each case grate plates are supported so that they are co-ordinated in transverse rows and sealed by means of screw connections, wherein the grate plates have cooling gas openings and cooling gas connecting channels are constructed between the grate plate support and the cooling gas openings. Reliable sealing as well as quick installation of the grate plates is achieved in that each grate plate, so as to form a cooling gas connecting channel, has a hollow box-shaped lower part with a base wall which is in gas-tight form-locking engagement with the front long wall of the grate plate support, and that on the underside of each grate plate at least one tightening bolt engages, the said bolt passing through the rear long wall of the grate plate support towards the exterior and being clamped there by a bolt nut.

Cooler grate for a reciprocating grate cooler

The invention relates to a reciprocating grate cooler in which the drive arrangement is enclosed by a drive housing, the interior of which is closed off so as to be airtight against the atmosphere, but by contrast has a pressure equalization connection to the interior of the cooler housing. Such a reciprocating grate cooler is distinguished by a substantially reduced expenditure for the sealing of the cooler housing and a high degree of freedom from disruption.

In this cooler grate according to the invention the supporting surfaces of the grate plates fixed on grate plate supports are provided with cooling gas openings which open upwards and are constructed in the form of substantially endless annular gaps, so that on the one hand a particularly effective cooling of the grate plates and on the other hand a particularly intensive cooling of the material transported over the cooler grate is achieved.

Cooler grate

The invention relates to a shaft-type countercurrent heat exchanger in which the uppermost part of the shaft is formed by a turbulence chamber which communicates with the underlying countercurrent chamber of the shaft through a central material outlet and several gas pipes opening tangentially into the turbulence chamber, thereby improving the thermal efficiency of the heat exchanger.

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Oelde, Germany

Gert Tegtmeier