CN101863183A

CN101863183A - Dust-sucking blackboard eraser

Info

Publication number: CN101863183A
Application number: CN 201010128704
Authority: CN
Inventors: 蒋奉国
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-22
Filing date: 2010-03-22
Publication date: 2010-10-20

Abstract

The invention relates to a dust-sucking blackboard eraser, and the technology thereof relates to blackboard erasers. When chalk characters are erased through the blackboard eraser, chalk dust can be stuck onto the blackboard eraser. When the chalk dust stuck onto the blackboard eraser is flicked off, the chalk dust can fly around, and a layer of thick chalk dust is often formed on the platform or the desk of a teacher and is possible to soil the clothing of the teacher and the books placed on the desk at any time. The invention aims to suck the chalk dust into the blackboard eraser while the chalk characters are erased by adopting the principle of a dust collector. When the chalk dust is accumulated to a certain degree, a dust storage box is taken off and the inside chalk dust is dumped.

Description

Dust absorption blackboard eraser

Affiliated technical field: present technique relates to blackboard eraser

Background technology:

Chalk and blackboard eraser are the essential tool that the teacher gives a lesson, and when wiping letter written with chalk with blackboard eraser, chalk dust flies upward everywhere, allows many teachers suffer from occupational disease.The appearance of dust-free chalk has well solved this problem.With the letter written with chalk that dust-free chalk is write, chalk dust can not fly upward everywhere when wiping with blackboard eraser, but can be bonded on the blackboard eraser.In the time will clapping the chalk dust of adhering on the blackboard eraser, chalk dust can fly upward equally everywhere, on teacher's the dais and lectern, a thick layer of chalk dust is often arranged all, the teacher's that all may make dirty at any time clothes and the books that are placed on the lectern.

Summary of the invention:

The objective of the invention is to adopt the principle of dust catcher, when wiping letter written with chalk, chalk dust is sucked in the blackboard eraser.When chalk dust runs up to a certain degree, take off dust-collecting box and the chalk dust of the inside outwelled and get final product.

The structure of dust absorption blackboard eraser is divided into shell, cotton thread rod, centrifugal fan, dust-collecting box, dirt filtrating screen five parts.

Shell is divided into two parts up and down.The shape of lower part as depicted in figs. 1 and 2, the shape of upper part is as shown in Figures 2 and 3.For prevent blackboard eraser in use chalk dust leak, below shell, be equipped with 1

The block rubber of shape (as Fig. 1 and Fig. 2)

The shape of cotton thread rod as shown in Figure 5, it is stained with one deck cotton thread exactly on a steel bar, cotton thread one end of all equal length is bonded on the steel bar, the other end is emitting shape and outwards launches (as Fig. 6), bearing is installed at two ends at steel bar, and at one end distance between bearing is equipped with belt pulley (as Fig. 5) nearby.

Turning cylinder one end of centrifugal fan motor is equipped with belt pulley, drives the belt pulley rotation of cotton thread rod when the belt pulley of motor rotates by belt.The turning cylinder other end of motor is equipped with blade, rotates by the high speed of blade to drive flowing of air, reaches the purpose (as Fig. 8) of dust suction.

Dirt filtrating screen is installed on the Storage Box.The shape of dust-collecting box as shown in Figure 7.It is the rectangle box of a uncovered, promptly has only 5 faces, wherein has a face to make with dirt filtrating screen, and all the other four faces are made with plastics.An air inlet is arranged on the face relative with dirt filtrating screen.(as Fig. 7)

Dust absorption blackboard eraser can be used battery, also can be inserted on the power supply with electric wire and use.After turning on the power switch, in the time of the rotation of the motor drives blade of centrifugal fan, also drive the rotation of cotton thread rod, the cotton thread on the cotton thread rod is wiped letter written with chalk and is become dust.Centrifugal fan drives air and flows, and makes the air band chalk dust and flow into air intake passage near the cotton thread rod, is blown into after entering centrifugal fan again StorageDirt Box, flowing out by the air that becomes cleaning behind the dirt filtrating screen, chalk dust is then stayed in the dust-collecting box,

When StorageDirt BoxIn dust when running up to certain degree, take out dust-collecting box and the chalk dust of the inside is outwelled got final product.

Description of drawings:

Fig. 1 is the shell lower face component one of dust absorption blackboard eraser

Fig. 2 is the shell lower face component two of dust absorption blackboard eraser

Fig. 3 is the shell upper part figure one of dust absorption blackboard eraser

Fig. 4 is the shell upper part figure two of dust absorption blackboard eraser

Fig. 5 is that cotton thread rod Fig. 6 is a cotton thread rod cross sectional representation

Fig. 7 is that filter dirt box Fig. 8 is centrifugal fan and cotton thread rod scheme of installation

Fig. 9 is the dust absorption blackboard eraser overall schematic

Each several part title among the figure: 1, bearing box 2, air intake passage 3, wind outlet 4, install battery position 5,

Position 8, bearings mounted position 9, belt pulley 10, cotton thread 11, steel bar 12, the air inlet 13 of dust-collecting box, dirt filtrating screen 14, cotton thread rod 15, belt 16, the motor 17 of centrifugal fan, the blade 18 of centrifugal fan, dust-collecting box 19, the dirt filtrating screen of the block rubber 6 of shape, handle 7, installation dust-collecting box

The specific embodiment:

Claims

1. dust absorption blackboard eraser is characterized in that having above the blackboard eraser motor and storage dirt device.