US 11,090,656 B2Granted

Milling bowl

AssigneeLoesche GmbH

InventorsAlexander Klokow, Stefan Hamann, Heide Hammesfahr, Karl-Heinrich Zysk

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Abstract

The invention relates to a milling bowl, in particular for vertical mills, and to the production of such a milling bowl. Milling bowls of this type have hitherto typically been produced from a cast material as a single piece. Due to the increasing size of said milling bowls, said milling bowls can generally only be transported to the destinations by means of special transport. Therefore, the invention creates a milling bowl consisting of assemblies, wherein a double-walled center part formed from two housing shells is provided between a head flange and a base flange. Said center part forms a cavity, which is filled with a curable casting compound such that a rotationally rigid milling bowl is present after the casting compound has been cured.

Claims18

Dependent claims

A milling bowl for use in vertical mills, having a lower ring-shaped base flange and

an upper ring-shaped head flange for forming or receiving a grinding bed of the vertical mill,
wherein the milling bowl is ring-shaped and constructed to be hollow in an area surrounding its axis of rotation, and
a center piece, which connects rigidly the head flange and the base flange,
wherein a cavity, which is formed between casing shells of the center piece and the two flanges, includes a cured casting compound that fills in the cavity, and
wherein the two flanges along with the center piece and the cured casting compound form a rotationally rigid milling bowl,
wherein
a) the center piece provided between the head flange and the base flange is a separate piece from the head flange and the base flange, and
b) the center piece is of double-walled design with the two casing shells, and
c) the casing shells of the center piece feature reinforcement anchors, which are embedded into the cured casting compound.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/776,222Filed 19 Nov 2015
Published: US 2019/0262838 A129 Aug 2019
Granted: 17 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B02C 15/003
Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs: shape or construction of discs or rings
B02C 15/006
Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs: ring or disc drive gear arrangement
B24B 37/025
Designed for working surfaces of revolution: designed for working spherical surfaces
F16H 37/041
Combinations of toothed gearings only: for conveying rotary motion with constant gear ratio