A wedge wire support grid provides a false bottom in a lauter tun in many breweries.
What is a Tun/Lauter Tun Combination?
A mash tun/lauter tun combination combines all the functionality of both a mash tun and a lauter tun, both key components in a brewhouse, into a single tank component where all of the following brewing processes take place:
Grain, previously cracked in the grain mill, is combined with metered hot water
Complex starches are converted into fermentable simple sugars
Wort is recirculated over a grain bed in a clarifying process called vorlauf
Sugars are rinsed and extracted from the grain during the sparge cycle
Wetted grain is separated from liquid wort using a false bottom filter screen before transfer to the brew kettle
Combining the mash tun and lauter tun functionality into a single tank unit increases your efficiency and reduces your brewing equipment costs.
In the lautering process, the wort (the liquid containing the sugar extracted during mashing) is separated from the grains. This is done either in a lauter tun outfitted with a false bottom or in a mash filter. Most separation processes have two stages: first wort run-off, during which the extract is separated in an undiluted state from the spent grains, and sparging, in which extract which remains with the grains is rinsed off with hot water. The lauter tun false bottom is designed to hold back the large bits of grist and hulls. The bed of grist that settles on it is the actual filter. Lauter tuns have provisions for rotating rakes to cut into the bed of grist to maintain good flow. When the process is complete, a plow can be dropped to drive the spent grain out of the vessel.
Our UBO screen provide the design Lauter Tun false bottom screen products for various kinds of breweries, so you can contact us at any time if you have any questions about the brewery filtration.