▎ 摘 要
NOVELTY - The utility model claims a static device 2, comprising: tank body 21, the tank body comprises a top 211, side wall 212 and bottom 213, the top 211, side wall 212 and bottom 213 together form a static chamber 20; and the tank body 21 is fixedly connected with the stirring device 26 + 27; the top part 211 of the tank body is provided with a feeding valve 22 and a top observing window 24, the side wall 222 of the tank body is provided with a discharging valve 23 and a side wall observing window 25.