Combined drainage hole filtering device for underground roadway

• Main Authors: WANG CHENGZHAO, LUO ZEXIAN, ZHANG HONGRUN
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2022
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model relates to an underground roadway combined type weep hole filtering device which comprises an inner filter screen assembly and an outer filter screen assembly arranged on the outer side of an inner filter cylinder in a sleeving mode, and the outer filter screen assembly is used for conducting primary filtering on production return water. The inner filter screen assembly comprises an inner filter cylinder and a cover plate installed at the top of the inner filter cylinder, the inner filter cylinder comprises a main filter part located on the upper portion of the inner filter cylinder and a guide part located on the lower portion of the inner filter cylinder, a plurality of vertically-formed strip-shaped filter holes are evenly distributed in the main filter part in the circumferential direction, and a plurality of round filter holes are evenly distributed in the guide part in the circumferential direction. And the guide part is used for extending into the drainage hole. The outer filter scree