Abstract: A plant and a process for crushing and mash production is provided wherein the raw material to be processed is broken up and mashed in a mill system. Prior to the mill system (1) being filled with the material (6) to be crushed the mill system is filled with an inert gas from a gas reservoir (13) so that the atmospheric oxygen in the mill system (1) is substantially displaced. After the mill system (1) has been filled, the latter is sealed in substantially gas-tight manner and the raw material (6) is ground and mashed in, subject to exclusion of atmospheric oxygen.

Abstract: A device for the feeding of mash into a lauter tun is provided with a mash pump, a main pipe (12) which is connected to the mash pump and at least two partial stream pipes (6) which connect the main pipe (12) to a feed opening (19) in the lauter tun (2) in each case. When the mash pump is in operation, mash is fed from a mash container into the lauter tun (2) via the main pipe (12) and the partial stream pipes (6). To enable the mash to flow into the lauter tun (2) in as uniform a manner as possible a buffer vessel (22) is arranged between the main pipe (12) and the partial stream pipes (6).

Abstract: A supplementary wort removal device in lauter tuns is provided, in order to avoid tight and solidly constructed discharge pipe assemblies with check valves for the wort, and the supplementary wort removal device preferably has a plurality of annularly segmented and vertically movable hollow members with screen walls, and the hollow members are open on the bottom. Preferably, the hollow members have a transverse section in the form of an inverted U or V. Before the pumping of the mash into the lauter tun, the hollow members are simply placed with their open bottoms on the screen and/or perforated floor of the lauter tun. The wort which is being discharged from the draff layer and flowing through the screen walls into the inside chambers of hollow members flows further through the open bottoms of hollow members directly through the screen and/or perforated floor of the lauter tun and into a collection chamber between the screen and/or perforated floor and the tun floor.

Abstract: A cutting or breaking up device 11 is built into a straining tun 10, which is set in rotation following a certain draining off time, in order to loosen up the brewer's grain cakes which have built up on the screen base 15 of the straining tun 10. Cutting device 11 has an upright, motor-powered shaft 16, to which are fastened a plurality of horizontal arms 12, which in turn support rows of cutting blades 13A, 13B. At the bottom ends of these cutting blades 13A, 13B in turn are fastened at least two cutting shoes 14, which cause a rapid, intensive loosening up of the brewer's grain cake upon rotation of the cutting device 11.