Multi -functional clean blackboard

The utility model provides a multi -functional clean blackboard, includes blackboard (1), characterized by: blackboard (1) outside is provided with support (2), is provided with slide rail (3) on support (2), and both ends are parallel with blackboard (1) about slide rail (3), are provided with first slider (4) and second slider (5) on slide rail (3), and first slider (4) are connected with fixed blackboard eraser (6) through first connector (7), and the length of fixed blackboard eraser (6) is consistent with blackboard (1) width, and second slider (5) are connected with through second connector (8) and move blackboard eraser carriage (9), be provided with 1 perhaps a plurality of portable blackboard eraser (10) on moving blackboard eraser carriage (9), fixed blackboard eraser (6) and portable blackboard eraser (10) and the contact of blackboard (1) face, first slider (4) and second slider (5) are connected with the 1st power drive device (13) and the 2nd power drive device (14) respectively, and the 1st power drive device (13) and the 2nd power drive device (14) are connected with brake valve lever (24), be provided with spray header (11) on support (2), spray header (11) are located blackboard (1) top, are provided with nozzle (12) on spray header (11), and spray header (11) are connected with inlet tube (21), are provided with inlet valve (25) on inlet tube (21), and inlet valve (25) are connected with brake valve lever (24), be provided with wastewater collection groove (15) on support (2), wastewater collection groove (15) are located blackboard (1) lower part, and for the slope sets up, inclination is: 0 -30, wastewater collection groove (15) are connected with useless water purification installation, and useless water purification installation includes purification of waste water groove (16), purification of waste water groove (16) inside first sediment board (17) and second sediment board (18) of being provided with, and purification of waste water groove (16) lower part is provided with drain pipe (19), and inlet tube (21) is connected through electric water pump (20) in drain pipe (19), be provided with wiper (22) in the middle of blackboard (1) lower part, be connected with 2 windshield wiper (23) on wiper (22). The utility model discloses the advantage lies in: can realize the self -cleaning of blackboard, labour saving and time saving improves work efficiency, alleviates worker's amount of labour, realize the circulation reuse of water resour