The WP says this: At present, the rules for mining pool settlement and automatic coinage are: every block excavated counts a statistical period, and settles once, and the mined coins are distributed in proportion to all participating computing power in the period. If there are more than 2 reward shares, 10 blocks will be credited into the account in 50 minutes, 0.2 blocks will be credited in 8.3 hours, and 0.02 blocks will be credited in 3.5 days.