A device for erasing chalk dust on a blackboard for teaching
A technology of blackboard eraser and chalk dust, which is applied to blackboard or slate cleaning devices, office supplies, chemical instruments and methods, etc., can solve problems such as poor effect, chalk dust affects people's health, and affects the use effect of blackboard eraser. Reduce the effect of drifting in the air, avoiding the effect of drifting in the air
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Embodiment 1
[0026] A kind of equipment for erasing chalk dust with a blackboard for teaching, such as Figure 1-4As shown, it includes a bottom plate 1, a box body 2, a piston 3, a pressure rod 4, an air outlet pipe 5, a first one-way valve 6, an air inlet pipe 7, a second one-way valve 8, a first bracket 9, a processing box 10, Cover plate 11, first clamping block 12, clamping rod 14, fixing frame 15, spring 16, first fixing block 17, second fixing block 18, motor 20 and gear 21, and the top right side of bottom plate 1 is provided with box body 2, The box body 2 is provided with a piston 3, the top of the piston 3 is provided with a pressure rod 4, the lower part of the right wall of the box body 2 is provided with an air outlet pipe 5, and the first check valve 6 is arranged in the air outlet pipe 5, and the lower part of the left wall of the box body 2 is provided with Air intake pipe 7 is arranged, and the middle part of air intake pipe 7 is provided with second one-way valve 8, and ...
Embodiment 2
[0028] A kind of equipment for erasing chalk dust with a blackboard for teaching, such as Figure 1-4 As shown, it includes a bottom plate 1, a box body 2, a piston 3, a pressure rod 4, an air outlet pipe 5, a first one-way valve 6, an air inlet pipe 7, a second one-way valve 8, a first bracket 9, a processing box 10, Cover plate 11, first clamping block 12, clamping rod 14, fixing frame 15, spring 16, first fixing block 17, second fixing block 18, motor 20 and gear 21, and the top right side of bottom plate 1 is provided with box body 2, The box body 2 is provided with a piston 3, the top of the piston 3 is provided with a pressure rod 4, the lower part of the right wall of the box body 2 is provided with an air outlet pipe 5, and the first check valve 6 is arranged in the air outlet pipe 5, and the lower part of the left wall of the box body 2 is provided with Air intake pipe 7 is arranged, and the middle part of air intake pipe 7 is provided with second one-way valve 8, and...
Embodiment 3
[0031] A kind of equipment for erasing chalk dust with a blackboard for teaching, such as Figure 1-4 As shown, it includes a bottom plate 1, a box body 2, a piston 3, a pressure rod 4, an air outlet pipe 5, a first one-way valve 6, an air inlet pipe 7, a second one-way valve 8, a first bracket 9, a processing box 10, Cover plate 11, first clamping block 12, clamping rod 14, fixing frame 15, spring 16, first fixing block 17, second fixing block 18, motor 20 and gear 21, and the top right side of bottom plate 1 is provided with box body 2, The box body 2 is provided with a piston 3, the top of the piston 3 is provided with a pressure rod 4, the lower part of the right wall of the box body 2 is provided with an air outlet pipe 5, and the first check valve 6 is arranged in the air outlet pipe 5, and the lower part of the left wall of the box body 2 is provided with Air intake pipe 7 is arranged, and the middle part of air intake pipe 7 is provided with second one-way valve 8, and...
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