Paper appearance screen changing device for maintaining use is copied in laboratory

The utility model discloses a paper appearance screen changing device for maintaining use is copied in laboratory, including support and screw rod, the support constitute by roof, bracing piece, bottom plate, bottom plate corner sets through -hole, the bottom plate on set up little screw hole, little threaded hole set up the carrying bolt, roof corner sets and the corresponding through -hole of bottom plate, the roof on set up big screw hole, screw rod matched with set up at big threaded hole, the bracing piece pass the through -hole and inject bottom plate and roof and link together, the setting of screw rod lower extreme taking over a business of connection can dismantle, generally, the utility model has the advantages of simple structure, installation convenient to use can make things convenient for and effectually change the filter screen, greatly reduced copy the use cost that maintains of paper appearance, effectively reduce the research experiment cost, have high use value. 本实用新型公开了种实验室抄纸仪维护用换网装置，包括支架和