After the coke drum combined mechanical sieve for metallurgical coke, casting coke mechanical strength determination, can replace the hand sieve, without hand perforation, can reduce the labor intensity of the operator, while it can also improve the accuracy of determination, comparability. It is compact, simple to operate, easy to use, reliable operation. Equipped with time relay electrical control, so that the sieving timing reliable, eliminating human error. Automated control of the entire working process, smooth and reliable operation, greatly improve work efficiency.