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Pneumatic blackboard eraser

A pneumatic, cleaning machine technology, applied to the cleaning device of blackboard or slate, printing, office supplies, etc., can solve the problems of large volume, high noise, inability to adapt to the large-area polishing and cleaning of pneumatic blackboard wipers, and achieves small size. , extremely noise, light weight effect

Inactive Publication Date: 2005-11-09
梁兆轩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It's still electric, bigger and noisier
[0004] In addition, the existing air motors are all in the form of rotating the central axis and fixing the outer cylinder stator, which cannot be adapted to technical fields such as pneumatic blackboard erasers and large-area polishing and cleaning.

Method used

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  • Pneumatic blackboard eraser
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  • Pneumatic blackboard eraser

Examples

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] see figure 1 , the pneumatic blackboard cleaning machine includes a pneumatic negative pressure centrifugal exhaust fan 4, a dust collection container 1 and a pneumatic blackboard eraser 8, and the blackboard eraser is connected with the centrifugal exhaust fan 4 and the outdoor exhaust pipe 5 and the pneumatic tube 6 respectively. The high-pressure air pump is connected. The blackboard eraser 8 is a pneumatic outer rotor motor roller type, and the bottom of the shell is connected with the exhaust pipe 5 and the pneumatic pipe 6, and the pneumatic pipe 6 is arranged in the exhaust pipe 5 to form an inner and outer telescopic sleeve, which is convenient for blackboard eraser. of the mobile. Centrifugal air blower 4 is fixed on the below of blackboard by support. The air pipe 9 is provided with an air valve switch 7 and an air valve sw...

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Abstract

A pneumatic blackboard cleaner is composed of the outdoor high-pressure air pump and air delivering tube, pneumatic negative-pressure centrifugal air extractor with coaxial power blade wheel and centrifugal blade wheel, dust-collecting water container, and the eraser with pneumatic drum. Its advantages are simple and compact structure, low noise and no dust pollution.

Description

technical field [0001] The invention relates to a dust-free blackboard eraser, in particular to a pneumatic blackboard cleaner which requires no power supply for indoor equipment. Background technique [0002] There are many kinds of existing dust-free blackboard erasers and different structures. Most of them are electric, which is unsafe for primary school students, and its structure is more complicated and the noise is louder. Chinese Patent No. 95220742 discloses a blackboard eraser cleaner that can perceive the amount of chalk dust. On the wall of the cleaner body, a pneumatic mechanism is provided in the predetermined area where the wind force of the suction motor can act. One end of the mechanism communicates with the inside of the body, and the other end communicates with the outside of the body, and a movable part that can move with the wind pressure is arranged between the two ends. When the wall of the dust collecting bag inside the main body of the cleaner is gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 梁兆轩
Owner 梁兆轩
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