Auxiliary device for mathematics teaching
An auxiliary device and mathematical technology, applied in the cleaning device of blackboard or slate, office supplies, transportation and packaging, etc., can solve the problems of inconvenient use, scattered chalk dust, affecting the working environment of teachers, etc., to improve the working environment, improve The effect of using the scope and reducing the workload
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Embodiment 1
[0030] refer to Figure 1-5 , an auxiliary device for mathematics teaching, comprising a support column 4, a limit groove is opened on the outer wall of one end of the support column 4, and the limit block 5 is slidably connected to the inner wall of the limit groove, and the same blackboard 12 is installed on the outer wall of the two limit blocks 5 , the top of the outer wall of one side of the blackboard 12 is equipped with a mounting block 13, and the outer wall of the top of the mounting block 13 is provided with a rectangular groove, and the inner walls of both sides of the rectangular groove are rotatably connected with the same screw rod 14, and the outer wall of the screw rod 14 is rotated and connected with a sliding block 15, and a fixed plate 16 is installed on the top outer wall of the sliding block 15, a storage case 17 is installed on the top outer wall of the fixed plate 16, an air pump 24 is installed on the inner wall of one side of the storage case 17, and an...
Embodiment 2
[0035] refer to figure 1 , 2 , 3, 4, 6, an auxiliary device for mathematics teaching, which also includes a fixed frame installed on the inner wall of one side of the storage housing 17, and the outer wall of one side of the fixed frame is rotatably connected with a rotating shaft 28, and both sides of the outer wall of the top of the rotating shaft 28 are Placement rods are installed, and the same bristle plate 29 is installed on the top outer walls of the two placement rods, and the rotating fan blades 30 equidistantly distributed are installed on the outer wall of one side of the rotating shaft 28 .
[0036] Working principle: Compared with embodiment 1, by being provided with the rotating fan blade 30 on the fixed frame, the rotating shaft 28, the placement rod and the bristle board 29, the wind drawn out by the air pump 24 can drive the bristle board 29 on the rotating fan blade 30 By rotating, the inner wall of the filter screen cylinder 26 can be cleaned to prevent chalk...
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