造纸行业中,有的压力筛使用一段时间后,杂质会附着到筛筒表面上,从而堵塞筛孔。此时就需要停机清洗,从而增加非计划停机次数,影响生产效率。在此,介绍一种有效防止筛筒堵塞的纸机压力筛。如图1所示。纸机压力筛包括壳体、转动安装于壳体中的筛筒、固定于壳体上且连接于筛筒底部的超声波振动器,壳体两侧分别设置有进浆口以及排渣口,壳体的上方设置有与筛筒连通的出浆口。纸浆从进浆口进入到 In the paper industry, some pressure sieves use for a period of time, the impurities will be attached to the sieve cylinder surface, thus blocking the sieve. At this point you need downtime cleaning, thereby increasing the number of unplanned downtime, affecting production efficiency. Here, a paper machine pressure screen to prevent clogging of the screen cylinder is introduced. As shown in Figure 1. The paper machine pressure sieve comprises a shell, a sieve drum rotatably installed in the shell, an ultrasonic vibrator fixed on the shell and connected to the bottom of the sieve drum, two sides of the shell are respectively provided with a pulp inlet and a slag discharge port, Above the body is provided with a slurry outlet connected with the sieve drum. The pulp enters the pulp inlet