Closed dust isolation device between hydraulic supports

The utility model discloses a closed type dust isolation device between hydraulic supports. The closed type dust isolation device comprises a dust isolation cover (2) located between the adjacent hydraulic supports, a metal sliding groove (3) and a flow guide groove (4). The dust shield (2) is arranged on a top beam (11) and a shield beam (12) of an adjacent hydraulic support in an opening manner; the metal sliding groove (3) is obliquely located between shield beams (12) of the adjacent hydraulic supports, the upper end of the metal sliding groove (3) is stacked below the dust shield (2), and the lower end of the metal sliding groove (3) is stacked above the flow guide groove (4). The diversion trench (4) is located at the lower part of the shield beam (12), and the lower end is located outside the hydraulic support; a plurality of nozzles (6) are located at the top beam (11) and face the metal chute (3). The closed dust isolation device between the hydraulic supports is simple and compact in structure, coal