Blackboard dust removing system
The utility model discloses a blackboard dust removing system. The blackboard dust removing system comprises a blackboard, an upper dust removing device arranged on the top of the blackboard and a lower dust removing device arranged at the bottom of the blackboard. Because the upper end and the lowe...
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| Hauptverfasser: | , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a blackboard dust removing system. The blackboard dust removing system comprises a blackboard, an upper dust removing device arranged on the top of the blackboard and a lower dust removing device arranged at the bottom of the blackboard. Because the upper end and the lower end of the blackboard are provided with the dust removing devices respectively and dust removing pipelines and an induced draft fan are arranged, dust is absorbed. |
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