CN2489984Y - High-efficient chalk dust removal eraser - Google Patents

Abstract

The utility model relates to a high-efficient chalk dust removal eraser, comprising an echelon type semiclosed shell and an eraser rack which is fixed on the shell. The front side of the eraser rack is provided with two felt strip grooves. The felt strip is embedded inside the felt strip groove. The side of the groove end is opened with strip holes which are symmetrically distributed at the root part. The shell is internally provided with a motor, and the motor seat and a wind attracting chamber are integrated into one. The shaft of the motor is provided with a vane wheel. A fine dust and gas separator is arranged at the lower half part of the shell. A rectangle type slender filter is arranged inside an exhausting cover. The utility model has the advantages of high handwriting removal efficiency, good dust removal efficiency, and being widely used in various schools.

Description

The dirt blackboard eraser efficiently goes out

The utility model relates to blackboard eraser, particularly electric dust absorption blackboard eraser.

Present widely used blackboard eraser does not have the function of dust suction, the back dust that erases the board flies upward everywhere, influence teachers and students' health, in order to address this problem, people have done multiple effort, the technology that one key name is called " electric dust absorption blackboard eraser " is disclosed for No. 002008998 as Chinese patent, introduced a kind of main frame upper shell that has, lower house, motor, fan, aspiration channel, the blackboard eraser body, electric machine support, inner housing and dust conduit, driven by motor fan running, gas is discharged main frame by exhaust outlet, the inner negative pressure that forms of main frame, dust enter main frame along aspiration channel and dissolve in downwards in the water under the effect of rotation wind-force by the dust conduit, and air is then discharged by exhaust outlet, this novel device adopts the molten dirt of liquid, cheap, energy consumption is little, and volume is little, in light weight, easy to use, but it is low to exist the micronic dust efficient of going out, the serious problem of still dirty beam.

Task of the present utility model is; Overcome the deficiencies in the prior art, design a kind of dirt blackboard eraser that efficiently goes out of the micronic dust that goes out simple in structure, easy to use.

Task of the present utility model is that following mode realizes; The dirt blackboard eraser that efficiently goes out is made of housing, blackboard eraser frame, felt rug, micro machine, blade wheel, micronic dust gas separator, fine filtering sheet and exhaust cap, said housing is trapezoidal semi-enclosed, the blackboard eraser frame is fixed on the housing, the blackboard eraser front is provided with two pass felt rug groove, the felt rug edge within it, the distolateral cylindrical void that has of groove is symmetrically distributed in its root, the motor that it is integrated with the air inducing chamber is housed in the housing, the blade wheel is housed on the motor shaft, the micronic dust gas separator is arranged on the housing Lower Half, and rectangle fine filtering sheet is contained in the exhaust cap.

The utility model is wiped when moving dust is not had grinding because blackboard eraser is two hollow wiping faces, so high efficiency; Because the utility model blade wheel is supper wide type, so attraction is big, whole dust can be sucked in the dirt storehouse; Because micronic dust gas separator and fine filtering sheet dust suction area is big, capacity is big, absorber contains liquid absorbent, and the dirt efficient height that therefore goes out can reach 95% after testing.

Fig. 1 is the utility model front view;

Fig. 2 is a micronic dust separator view;

Fig. 3 is two hollow rubbing frame views;

Fig. 4 is supper wide type blade wheel view;

A most preferred embodiment of the present utility model, as figure, the housing 4 of dirt blackboard eraser of efficiently going out is trapezoidal semi-enclosed structure, blackboard eraser frame 10 is fixed on the housing, the front of blackboard eraser frame is provided with two pass felt rug groove 18 felt rugs 6,7 edges within it, forms two hollow wiping faces, and felt rug adopts high-abrasive material terylene felt to do, the many dust of this material micropore can be extruded recovery, and dust is ground little high efficiency.The distolateral cylindrical void 19 that has of groove is symmetrically distributed in its root, the motor 3 that it is integrated with the air inducing chamber is housed in the housing, blade wheel 9 is housed on the motor shaft, and it is a filter that micronic dust gas separator 13 is arranged on the housing Lower Half, and rectangle fine filtering sheet 12 is provided with and is secondary filter in the exhaust cap 11, the structure of micronic dust gas separator 13 as shown in Figure 2,1 is the shunting chamber, and 5 is the dividing potential drop hole, and 14 is the exhaust passage, 2 is the micronic dust absorber, and 8 is the big dust particle storehouse.

The course of work of this device is: hand-held blackboard eraser is wiped the letter written with chalk on the blackboard down, the dust that produces sucks the air inducing chamber by the centrifugal force of the blade wheel rotation generation of motor one end with dust, to inscribe a dust greatly through the inertia of its negative pressure again injects in the dust storehouse and stores through the shunting chamber, micronic dust enters adsorbent chamber, collision mutually in some irregular pores, micronic dust is adsorbed by the capillary hole wall, and gas comes fine filtering chamber, two roads, through it micronic dust of seldom missing is held back through the fine filtering sheet again, clean gas is got rid of external, thereby realize that micronic dust is separated from the gas, the purpose of the dirt of realizing efficiently going out.

Claims (3)

1. dirt blackboard eraser that efficiently goes out, by housing, blackboard eraser frame, felt rug, micro machine, blade wheel, the micronic dust gas separator, fine filtering sheet and exhaust cap constitute, it is characterized in that: housing is trapezoidal semi-enclosed, the blackboard eraser frame is fixed on the housing, blackboard eraser frame front is provided with two pass felt rug groove, the felt rug edge within it, the distolateral shape of groove has cylindrical void to be symmetrically distributed in its root, and itself and the motor that the air inducing chamber is integrated are housed in the housing, and the blade wheel is housed on the motor shaft, the micronic dust gas separator is arranged on the housing Lower Half, and rectangle fine filtering sheet is contained in the exhaust cap.

2. blackboard eraser as claimed in claim 1 is characterized in that: it comprises a micronic dust absorber said micronic dust gas separator, is disposed with shunting chamber, dividing potential drop hole, exhaust passage and big dust particle storehouse on it.

3. as claims 1,2 described blackboard erasers, it is characterized in that: said felt rug adopts the terylene felt to do.