CN104626838A - Electric dust collection blackboard eraser - Google Patents

Abstract

An electric dust-absorbing blackboard eraser is provided with a housing, and the bottom surface of the housing is provided with an air suction port, a plurality of powder suction holes, a magnetic switch and a plurality of wipers. The dust suction device is arranged at the air suction port and connected with the magnetic switch. The invention solves the defects of inconvenient operation and high price of the existing electric blackboard eraser. The electric dust-absorbing blackboard eraser has the advantages of being detachable, convenient to use, complete in function and good in use effect.

Description

Electric Vacuum Blackboard Eraser

technical field

The invention relates to a blackboard eraser, in particular to an electric dust-absorbing blackboard eraser.

Background technique

At present, most educational institutions still use traditional blackboard erasers to wipe blackboards. Like this will run into a series of problems, promptly teacher or classmate when wiping blackboard, the dust that produces can fly everywhere, and this can bring serious influence to the health and work efficiency of teacher and student. According to relevant national reports, statistics in 1993 show that teachers and students in our country inhale about 200 grams of chalk dust per person every year in class, and about 20% suffer from respiratory tract, lung disease and cancer. This shows that chalk dust is huge to the health hazard of teachers and students. At the same time, flying chalk dust has a great impact on the personal hygiene of teachers and students.

The existing electric blackboard eraser has complex structure, inconvenient operation, high price, and is unfavorable for cleaning and recycling.

Contents of the invention

The present invention provides an electric dust-absorbing blackboard eraser to solve the above-mentioned technical problems, which solves the defects of inconvenient operation and high price of the existing electric dust-absorbing blackboard eraser. Good effect and other advantages.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is: an electric dust-absorbing blackboard eraser is provided with a housing, and the bottom surface of the housing is provided with an air suction port, a plurality of powder suction holes, a magnetic switch and a plurality of wipers. The shell is provided with a dust collection box, and a dust suction device is arranged in the dust collection box, and the dust collection device is arranged at the air suction port and the powder suction hole. Connect to supply power to the motor, a magnetic switch is provided on the power supply line between the power supply and the motor, and the drive shaft of the motor is connected to the blades.

The shell of the present invention is provided with a dust storage box, and the dust storage box communicates with the dust collection box.

The dust storage box of the present invention is provided with a dust collection bag, and the mouth of the dust collection bag is connected with the dust collection box.

The casing of the present invention is provided with a storage box cover, and the dust storage box is below the storage box cover.

The storage box cover of the present invention is provided with an air outlet.

The inner surface of the storage box cover of the present invention is provided with a filter layer, and the filter layer is arranged correspondingly to the air outlet.

The power supply of the present invention is also connected with a time display, and the time display is arranged on the casing.

The dust storage box of the present invention is arranged with a high front and a low rear, and its height gradually decreases from the direction of the dust collection box to the rear.

The beneficial effects of the present invention are:

1. Multiple dust suction holes are set on the bottom surface of the shell to increase the number of dust suction holes, and the large dust suction surface increases the chance of dust being sucked into the space of the inner shell and improves the dust suction effect.

2. An electromagnetic switch is added. When the blackboard wiper touches the blackboard, it will automatically turn on the vacuum device, and automatically cut off the power supply when leaving.

3. The built-in time display can display the time on the surface of the blackboard eraser, allowing teachers to better grasp the time and improve work efficiency.

4. The blackboard eraser has a reasonable structure and is easy to use. The dust absorption rate of the electric vacuum blackboard eraser is as high as 96%.

5. The dust collection bag is a detachable structure, and the dust can accumulate. After the dust collection bag is cleaned, it can be recycled again.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the bottom surface structure schematic diagram of the present invention;

Fig. 3 is a schematic structural view of the dust storage box of the present invention;

Fig. 4 is the structural representation of opening storage case cover of the present invention;

Fig. 5 is the structural representation of storage case cover of the present invention;

Fig. 6 is a schematic structural view of the dust collection bag of the present invention;

Fig. 7 is a functional block diagram of the dust collection device of the present invention;

In the figure: 1. Shell, 2. Air suction port, 3. Powder suction hole, 4. Magnetic switch, 5. Wipe piece, 6. Dust collection box, 7. Dust collection device, 701, power supply, 702, motor, 703 , blades, 8, dust storage box, 9, dust collection bag, 10, storage box cover, 11, air outlet, 12, filter layer, 13, time display.

Detailed ways

As shown in the figure, the electric dust-absorbing blackboard eraser is provided with a housing 1, and the bottom surface of the housing 1 is provided with an air suction port 2, a plurality of powder suction holes 3, a magnetic switch 4 and a plurality of wipers 5, and the housing 1 There is a dust collection box 6 inside, the dust collection box 6 communicates with the suction port 2 and the powder suction hole 3, the dust collection box 6 is provided with a dust collection device 7, the dust collection device 7 is arranged at the suction port 2, and the dust collection device 7 The dust is sucked into the dust collection box 6 through the air inlet 2 and the powder suction hole 3, and the dust suction device 7 is controlled by the magnetic switch 4.

The housing 1 is provided with a dust storage box 8, which communicates with the dust collection box 6, and the dust sucked into the dust collection box 6 enters the dust storage box 8 for storage.

Described dust storage box 8 is provided with dust collection bag 9, and the sack of dust collection bag 9 is communicated with dust collection box 6, and dust collection bag 9 is collected dust, is convenient to cleaning blackboard eraser.

The housing 1 is provided with a storage box cover 10, and below the storage box cover 10 is a dust storage box 8. The dust storage box is conveniently cleaned by using the storage box cover, and at the same time, it is convenient to replace the dust collection bag 9 and clean up.

The storage box cover 10 is provided with an air outlet 11 to make the air flow smoothly and improve the dust collection efficiency of the dust collection device.

The inner surface of the storage box cover 10 is provided with a filter layer 12, which is arranged corresponding to the air outlet 11 to prevent dust from flying out of the air outlet and to filter the air in the dust storage box.

The dust suction device 7 is composed of a power supply, a motor, and blades. The power supply and the magnetic switch 4 are connected to the motor, and the drive shaft of the motor is connected to the blades.

The power supply is also connected with a time display 13, which is arranged on the casing 1 and can display time and date.

The motor drives the blades to rotate at a high speed, so that the air is discharged at a high speed, and the air in the dust suction part at the front end of the blades continuously replenishes the air in the fan, so that an instantaneous vacuum is generated inside the dust suction, and a negative pressure difference is formed with the external atmospheric pressure. Under the action of this pressure difference, Inhale dusty air and filter out dust through the filter layer. The greater the air volume, the greater the negative pressure difference, and the stronger the dust suction ability. The dust storage box is arranged with the front high and the rear low, and its height gradually decreases from the direction of the dust collection box to the rear. This kind of arrangement makes the negative pressure in the dust storage box in a stepped shape, so that the air pressure in the dust storage box is lower than that in the dust collection box, and the dust inhaled by the dust collection box is quickly collected into the dust collection box.

This device uses a magnetic switch to control the opening and closing of the dust collection device, because more than 95% of educational institutions use magnetic blackboards. The installation of this switch not only reduces power consumption but also eliminates the need for teachers to It is troublesome to turn on and off the switch every time. At the same time, the rechargeable lithium battery used in this device has a longer service life than dry batteries, reduces waste of resources, and reduces environmental pollution. At the same time, the chassis of this device is also the highlight of this device. Its design breaks the traditional strip-shaped gap for vacuuming. Although the strip is easy to suck in, but the control range is small, and the vacuuming effect is obviously not the best when wiping the blackboard. The device adopts a symmetrical hole design, which more comprehensively and reasonably improves the disadvantages of similar devices on the market, and makes a new breakthrough in the dust collection effect.

Claims (7)

1. electric dust absorption blackboard eraser, be provided with housing (1), it is characterized in that: on the bottom surface of housing (1), be provided with bleeding point (2), multiple suction powder hole (3), magnetic switch (4) and many pads (5), suction box (6) is provided with in housing (1), dust exhaust apparatus (7) is provided with in suction box (6), dust exhaust apparatus (7) is arranged on bleeding point (2) and inhales powder hole (3) place, described dust exhaust apparatus (7) is by power supply (701), motor (702), blade (703) forms, power supply (701) is connected with motor (702), and power to motor (702), supply line between power supply (701) and motor (702) is provided with magnetic switch (4), the driving shaft of motor (702) is connected with blade (703).

2. electric dust absorption blackboard eraser as claimed in claim 1, is characterized in that: be provided with dust storage box (8) in described housing (1), dust storage box (8) is communicated with suction box (6).

3. electric dust absorption blackboard eraser as claimed in claim 2, it is characterized in that: be provided with dust collection bag (9) in described dust storage box (8), the sack of dust collection bag (9) is communicated with suction box (6).

4. electric dust absorption blackboard eraser as claimed in claim 1, is characterized in that: described housing (1) is provided with storage box case lid (10), and storage box case lid (10) below is dust storage box (8).

5. electric dust absorption blackboard eraser as claimed in claim 4, is characterized in that: described storage box case lid (10) is provided with gas outlet (11).

6. electric dust absorption blackboard eraser as claimed in claim 4, it is characterized in that: the medial surface of described storage box case lid (10) is provided with filter course (12), filter course (12) is corresponding with gas outlet (11) to be arranged.

7. electric dust absorption blackboard eraser as claimed in claim 1, it is characterized in that: described power supply is also connected with time display (13), time display (13) is arranged on housing (1).