Novel environment-friendly blackboard with grid ruler function

The utility model discloses a novel environment-friendly blackboard with the grid ruler function. The novel environment-friendly blackboard comprises blackboard bodies, a sliding way, scrubbing devices, a water receiving tank, an automatic washing device and grid ruler projectors. The blackboard bodies include the front blackboard body and the back blackboard body. The front blackboard body and the back blackboard body are clamped in the sliding ways. The scrubbing devices are arranged in the middle of the sliding way and attached to the front face of the front blackboard body and the front face of the back blackboard body. The water receiving tank is arranged at the bottom of the sliding way, and a funnel is connected to the left side of the water receiving tank. The automatic washing device is arranged on the right side of the water receiving tank. Each grid ruler projector comprises a first laser emitting head, a second laser emitting head and a plurality of sets of parallel plane mirrors. Each first laser emitting head is perpendicular to the corresponding second laser emitting head, and each first laser emitting head and the corresponding second laser emitting head are arranged at the upper right corner of the corresponding blackboard body. The multiple sets of parallel plane mirrors are evenly arranged on the peripheries of the blackboard bodies. The novel environment-friendly blackboard is simple in structure and convenient to use, disassemble and wash; energy is saved, the environment is protected, the health of teachers and students is facilitated, a user does not need to carry a grid ruler, convenience is brought to teaching, and the good application value and the good popularization value are achieved.