“The coal dust on the working surface has become much smaller，Visibility has also been improved，Our safety and health are more secure。”Ma Dongdong, an employee of the comprehensive excavation team of Hanjiawan Coal Company, pointed to the wet dust removal fan that had just been renovated and put into use，gave a big like。

Recently，Hanjiawan Coal Company innovatively transformed the original dust removal fan，Made a self-made suction transfer box，Fixed to the windlass body。Using KCS550D mining wet dust removal fan and negative air pressure retractable air duct，Use the transfer box and the retractable air duct to form a soft connection，Connect the connector to the box，Achieved high efficiency and separate extraction of dirty air。

After this innovative transformation is put into use，Reduce dust from the source、The impact of coal dust diffusion on tunnel civilization and hygiene。Working surface production period，The dust removal rate of wet dust removal fan can reach more than 60%，Greatly improved the working surface production environment，Promotes job site safety management。On the other hand，The modified wet dust removal fan extends to the working surface normally with the belt loader，Greatly improved tunneling、Support efficiency，Protect the health of employees。

As understood，M88 loginAs the company’s first set of intelligent rapid excavation equipment is put into the well and put into production，Dust control in the working face tunnel has become a constraint on the excavation of the integrated anchor digging machine、Important factors for supporting parallel operations。The Comprehensive Excavation Team Maker Branch takes dust reduction on the working surface as its main attack direction，By consulting a large amount of technical information，Conducted multiple modification tests，Finally determined the best solution，Creating favorable conditions for safe and rapid excavation of the working face。(Author: Chen Ziliang Guo Siyu  Editor: Wang Yu)