CN2712656Y - Automatic chalk dust suction blackboard eraser - Google Patents

Abstract

The utility model discloses an automatic chalk dust suction blackboard eraser, comprising a blackboard eraser head, a dust suction hose, a dust collecting pipe, a filter bag for dust and an induced air machine, which solves the problems of the blackboard eraser with no environmental protection, no health care and poor dust suction effect. The outer shell of the blackboard eraser head is a cylindrical lower part and a conical upper part and the shell body whose cylindrical tops are connected with an integration is provided with a blackboard eraser being fixed with felt hairs at a disk-like bottom seat. One end of the dust suction hose is sheathed at the top of the blackboard eraser head while the other end is sheathed at the dust-collecting pipe with the filter bag for dust and the lower part of the dust-collecting pipe is communicated with the induced air machine. The utility model with multi-function not only can erase the blackboard but can be good for health care and environmental protection with better dust suction and time-saving and labor-saving effects and the automatic chalk dust suction effect is the same as the effect for erasing the blackboard with convenient use.

Description

The blackboard eraser of automatic sucking chalk powder dirt

Technical field

The utility model belongs to teaching aid, relates to a kind of blackboard eraser of automatic sucking chalk powder dirt.

Background technology

At present the blackboard eraser that uses have traditional, also the blackboard eraser of sucking chalk powder arranged, the former by rectangle wooden or rectangle iron sheet handle and felt hair form, erase the board except that time-consuming taking a lot of work with it, the chalk dust dusting polluting environment that rises from all around in the process that erases the board, unfavorable to teachers and students' health, chalk dust enters teachers and students' bronchus by breathing, lung causes inflammation, after class, do not wash one's hands and have a meal, must gastritis, to healthy harmful, the blackboard eraser of latter's sucking chalk powder is by manually-operated, time-consuming on the one hand, inhale the dust poor effect on the other hand.

Summary of the invention

The purpose of this utility model is to address the above problem, provide a kind of and save time, laborsaving, pick-up performance good, the blackboard eraser of the automatic sucking chalk powder dirt of environmental protection, health care.

The purpose of this utility model is achieved in that a kind of blackboard eraser of automatic sucking chalk powder dirt, it includes the blackboard eraser head, inhales the dust flexible pipe, collects dust pipe, dust filter bag and air-introduced machine, the shell of blackboard eraser head is coniform for the cylindric top of bottom, its top housing that is connected as a single entity cylindraceous, the blackboard eraser of fixing the felt hair on discoid base is being set in it, flexible pipe one end of inhaling dust is enclosed within blackboard eraser crown end, its other end is enclosed within on the collection dust pipe of band dust filter bag, and collection dust pipe lower end is being communicated with air-introduced machine.

The beneficial effects of the utility model are: have multi-functionally, not only can erase the board but also can keep healthy, environmental protection, inhale the dust best results, and the time and labour saving, sucking chalk powder dirt effect is the same with the effect that erases the board automatically, easily, uses easy to operately, and promotional value is arranged.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is that A among Fig. 1 is to structural representation.

The specific embodiment

A kind of blackboard eraser of automatic sucking chalk powder dirt, as Fig. 1, shown in Figure 2, it includes blackboard eraser head 3, inhale dust flexible pipe 5, collection dust pipe 7, dust filter bag 6 and air-introduced machine 9, the shell of blackboard eraser head 3 is coniform for the cylindric top of bottom, its top housing that is connected as a single entity cylindraceous, the blackboard eraser of fixing felt hair 1 on discoid base 2 is being set in it, flexible pipe 5 one ends of inhaling dust are enclosed within blackboard eraser crown end, its other end is enclosed within on the collection dust pipe 7 of band dust filter bag 6, collection dust pipe 7 lower ends are communicated with air inducing casing 8 upper central, air inducing casing 8 is a hollow cylinder, and its internal cavity is provided with air-introduced machine 9.Between blackboard eraser head 3 inner rims and the blackboard eraser periphery certain interval is arranged, be convenient to inhale dust wind and pass through.Blackboard eraser disc-shaped base 2 back sides are fixed on blackboard eraser head 3 internal faces by the support bar 4 of symmetry.The sack that dust filter bag 6 is done for garrha, its upper end is enclosed within on the collection dust pipe 7 upper end outer walls outward, the suction dust flexible pipe 5 that is enclosed within above it fixes, its top central authorities of air inducing casing 8 dual-side lower ends are provided with suction opeing 12, air-introduced machine 9 usefulness plugs 10 connect external power supply, and plug 10 lines are provided with button 11.For avoiding electronic trough to make dirty, the motor case 8 of band fan is placed in upright classroom teacher at a distance, and suction dust flexible pipe stretches out outside the classroom, classroom and gets final product.

Blackboard eraser head 3 is held in the hand during use, shift knob 11 is opened back blackboard eraser head 3 and is moved lightly on blackboard, felt hair in the middle of the blackboard eraser erases the board, under the effect of the negative pressure source that its chalk dust is produced with air-introduced machine 9, be sucked into by sucking chalk powder dirt flexible pipe 5, dust filter bag 6, suction opeing 12 discharges of dust air inducing casing 8 its top central authorities of dual-side lower end that collection dust pipe 7 is more tiny outside, thicker chalk dust is stayed in the filter bag 6, collection is enclosed within collection dust pipe 7 upper ends when full suction dust flexible pipe 5 unclamps, dust filter bag 7 pulled out outwell chalk dust in it, be enclosed within the original place again and get final product.

Claims (3)

1, a kind of blackboard eraser of automatic sucking chalk powder dirt, it includes the blackboard eraser head, inhales the dust flexible pipe, collects dust pipe, dust filter bag and air-introduced machine, it is characterized in that: the shell of blackboard eraser head is coniform for the cylindric top of bottom, its top housing that is connected as a single entity cylindraceous, the blackboard eraser of fixing the felt hair on discoid base is being set in it, flexible pipe one end of inhaling dust is enclosed within blackboard eraser crown end, its other end is enclosed within on the collection dust pipe of band dust filter bag, and collection dust pipe lower end is being communicated with air-introduced machine.

2, the blackboard eraser of automatic sucking chalk powder dirt according to claim 1 is characterized in that: between blackboard eraser head inner rim and the blackboard eraser periphery certain interval is arranged, the blackboard eraser disc-shaped base back side is fixed on blackboard eraser head internal face by the support bar of symmetry.

3, the blackboard eraser of automatic sucking chalk powder dirt according to claim 1 is characterized in that: dust filter bag is the sack that garrha is done, and its upper end is enclosed within on the outer wall of collection dust pipe upper end outward, and the suction dust flexible pipe that is enclosed within above it fixes.

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