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The difference between mash tun and rice tun ZXF


The difference between mash tun and rice tun


Volume: mash tun larger than the rice tun, the filling factor is 0.7, and the heat transfer area is smaller than that of the rice tun. 


The mash tun is a container with a cylindrical body, a slightly tapered interlayer and a curved top cover. In order to keep the mash at a certain temperature in the tun, most of the domestically designed mashing pots are equipped with a jacket at the bottom to keep hot water or steam for heat preservation, and at the same time to keep the concentration and temperature of the mash uniform.

Near the bottom of the tun, there is a paddle agitator to rotate. The agitator is directly driven to rotate by a motor through a vertical turbine reducer. There are 2 discharge valves under the bottom of the tun, which can send the mash to the rice tun and filter separately. groove. There are two sliding manhole doors on the lid of the pot, one double sliding door with holes, and one single sliding door with manholes, which are both a viewing hole and a manhole. The top of the pot cover is equipped with an exhaust pipe, and the root of the exhaust pipe has a waved groove. The condensate left along the wall of the exhaust pipe is collected and drained out of the tun by the condensing pipe. The root is also equipped with an exhaust hole door. Adjust it according to needs. Degree of opening and closing. There is a hood on the top to prevent the entry of birds and the ingress of wind and rain, and a down-wind tube is installed on the lid of the pot. In order to prevent the dust from rising, the powder lowering cylinder device has hot and cold water entering at the same time when the powder is loaded. The pot cover is also equipped with a pressure thermometer and a lighting lamp, and is equipped with a mash outlet.


The material of the mash tun is stainless steel, and the inner layer of the bottom and the top of the pot are copper plates. The mash tun adopts the steam jacket heating form, and the heating area of the steam jacket is limited, but the internal cleaning is relatively convenient. Also, because the liquid in the mash tun contains solids, other heating methods are not suitable. Steam jacket heating has little resistance to liquid circulation in the pot, but high-pressure steam cannot be used, because the larger the diameter of the equipment, the greater the pressure generated by steam with the same pressure into the jacket wall, and the thickness must be increased. In order to avoid the jacket being too thick, only lower pressure steam is used. Generally, the pressure used for steam jacket heating does not exceed 0.25 MPa.



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