CN207241256U - The blackboard eraser that a kind of teaching is quickly absorbed with break flour - Google Patents

Abstract

The utility model discloses the blackboard eraser that a kind of teaching is quickly absorbed with break flour, including air outlet pipe, blackboard eraser, rotating turret, connection bump, box body, filter screen, lithium battery, compress spring, stepper motor, link, elastic packing plate, vane, main shaft, inhale bits chamber, it is separated by filtration chamber and shaft, connection bump is arranged on cassette upper end and it is connected by shaft with rotating turret, the front-end and back-end of rotating turret be respectively equipped with blackboard eraser and and link, stepper motor and its are fixed with link will inhale bits chamber and is connected with chamber is separated by filtration, stepper motor is connected by main shaft with four vanes, air outlet pipe is arranged on cassette upper end and its lower end is equipped with filter screen, lithium battery is arranged in box body and it is in the rear side of filter screen, it is arranged on using elastic packing plate made of elastic rubber between rotating turret and box body.

Description

The blackboard eraser that a kind of teaching is quickly absorbed with break flour

Technical field

The utility model belongs to teaching equipment technical field, more particularly to the blackboard that a kind of teaching is quickly absorbed with break flour Wipe.

Background technology

The defects of blackboard, is well-known, and easily produces break flour in erasing chalk trace.The composition of break flour is gypsum (calcium sulfate), although without toxicity, long-term suction, can also produce the symptom similar with silicosis.Main harm is as follows：

First, to the harm of teachers and students' respiratory system：1st, to the harm of lung：Harm of the dust to teacher's body, it is the most normal with lung See, in teaching process, chalk dust is easy to be inhaled into after lung, and majority is delayed in alveolar, by a series of stimulation, Chemistry and immune effect can cause lung to lose, including inflammation in respiratory system and pulmonary ventilation function decline, common lung Disease has：Chronic, acute pneumonia, lung cancer, pneumoconiosis etc. (contain silica in chalk dust, are inhaled into lung, in lung Free dioxide-containing silica 1 percent pulmonary fibrosis formed above dust so that alveolar fibrosis, causes lung Respiratory function declines).2nd, to the harm of the upper respiratory tract：Chalk dust enter lung approach be by the upper respiratory tract include nose, pharynx, Bronchus, in this course, part dust can stay in the upper respiratory tract, and mechanical stimulus and damage are produced to mucomembranous epithelial cell It is bad, work in such a case for a long time, a series of lesion can be caused, wherein the influence to nose most commonly induces drying property Rhinitis, secondly hypertrophic rhinitis, symptom is mycteroxerosis, nasal obstruction, nasal membrane are congested, secretion increases；To the shadow of pharynx Ring and mainly induce chronic pharyngitis, make pharyngeal drying, not well, pharyngalgia pharynx of coughing up phlegm is itched；Bronchial influence is mainly induced slow Property bronchitis, can also trigger asthma, in addition it is also possible to causing the canceration of the parts such as nasopharynx, bronchus sometimes.

2nd, to the harm of other organs and tissue：1st, to the harm of eyes：Eyes are most accurate, most easy in human organ One of impaired organ, the main ingredient calcium carbonate of chalk dust, calcium oxide etc. is a kind of water-soluble substances, is easily dissolved in Water, and produce alkaline matter, if teacher is in teaching process, chalk dust is fallen into eye, stimulates lacrimal secretion, tears hydrolysis carbon Sour calcium and produce alkaline matter, will seriously stimulate eye mucous membranes, cause mucosa injury, form chronic inflammation, it is also possible to induce The generation of myopia.2nd, to the harm of skin：In teaching process, chalk dust is inevitably stained on hand, at the same time teacher Floating on the granule dust in air can also fall in teacher's hair, on the face with neck, have stimulation to skin membrane, if heat It meets sweat solution, alkaline matter is produced, to mucocutaneous stimulation with regard to bigger, because the environment that human skin is survived is weak acid Property environment, the basic living environment of skin is so destroyed under dust alkalescence effect, chalk dust makes skin become dry, thick It is rough, and feel with itching, make human body uncomfortable, severe patient can cause acne, epifolliculitis, pyoderma, chapped skin and a large amount of hairs Falling out, influences and disturbs teacher's normal work and life.3rd, to the harm of ear：Chalk dust enters external auditory meatus, is mixed in skin In fat, ceruminal plug can be formed, if long-term in this way, the generation of ear inflammation can be caused.

3rd, among the composition for inducing the current market chalk of Other diseases, except inclined containing metallic element, lead manganese, barium equal size Low outer, the content of cadmium metal is higher, and after cadmium is sucked by human body, major storage is in liver, kidney, bone tissue, to these histologic lesions Substantially, major lesions caused by Long Term Contact cadmium compound are pulmonary emphysema and kidney damage, and the state of an illness can be in carry out sexual development, early stage table Existing powerless, thin, dizzy, insomnia and dreamful sleep, anorexia and neurasthenia symptom, and there is nosebleed, chronic pharyngitis, schneiderian membrane to wither Phenomena such as contracting and ulcer.Pulmonary emphysema are slowly in progress, and patient has progressive expiratory dyspnea, and activity aggravates, with palpitaition.Cadmium is at the same time It is most to easily lead to one of metallic element of cancer.

Utility model content

The existing problem for more than, the utility model provide the blackboard eraser that a kind of teaching is quickly absorbed with break flour, In order to avoid the harm of break flour, set blackboard eraser to be connected by rotating turret with box body, while set and pass through stepper motor driven four A vane so that air-flow passes sequentially through the blackboard eraser, suction bits chamber from the external world, is separated by filtration chamber, filter screen and air outlet pipe, forms one A gas channel for inhaling bits filtering, when being erased the board by blackboard eraser, break flour is rapidly absorbed into box body, the sky discharged after filtering Gas in the vertical direction forms a jet-propelled power-assisted, more effortlessly erases the board from top to bottom easy to user.

The technical solution of the utility model is：

The utility model provides the blackboard eraser that a kind of teaching is quickly absorbed with break flour, including air outlet pipe, blackboard eraser, rotating turret, Connection bump, box body, filter screen, lithium battery, compression spring, stepper motor, link, elastic packing plate, vane, main shaft, suction Bits chamber, be separated by filtration chamber and shaft, and the connection bump is arranged on the cassette upper end and it passes through the shaft and described turn Moving frame is connected, and the front-end and back-end of the rotating turret are respectively equipped with the blackboard eraser and the link, are fixed on the link Equipped with the stepper motor and its by it is described inhale consider to be worth doing chamber connected with the chamber that is separated by filtration, the stepper motor passes through the main shaft It is connected with four vanes, the air outlet pipe is arranged on the cassette upper end and its lower end is equipped with the filter screen, the lithium Battery is arranged in the box body and it is in the rear side of the filter screen, using the elastic packing plate made of elastic rubber It is arranged between the rotating turret and the box body.

Further, the lithium battery is connected with the stepper motor in a manner of being electrically connected.

Further, the both ends of the compression spring are connected with the stepper motor and the box body rear end respectively.

Further, the elastic packing plate and the rotating turret and the box body are to be detachably connected.

Further, the vane is in the link, and it is under the driving of the stepper motor so that air-flow The blackboard eraser, suction bits chamber are passed sequentially through from the external world, is separated by filtration chamber, filter screen and air outlet pipe, form the gas for inhaling bits filtering Circulation road.

As a result of above-mentioned technology, be allowed to specific positive beneficial effect compared with prior art is the utility model：

1st, the utility model sets blackboard eraser to be connected by rotating turret with box body, while sets and pass through stepper motor driven four A vane so that air-flow passes sequentially through the blackboard eraser, suction bits chamber from the external world, is separated by filtration chamber, filter screen and air outlet pipe, forms one A gas channel for inhaling bits filtering.

2nd, when being erased the board by blackboard eraser, break flour is rapidly absorbed into box body the utility model, the sky discharged after filtering Gas in the vertical direction forms a jet-propelled power-assisted, more effortlessly erases the board from top to bottom easy to user.

3rd, the utility model is easy to use, convenient and efficient.

4th, the utility model is simple in structure, securely and reliably, has good market prospects.

5th, the utility model good product performance, service life length.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the front view of the utility model；

Fig. 3 is the sectional view at A-A in Fig. 2.

In figure：1- air outlet pipes, 2- blackboard erasers, 3- rotating turrets, 4- connection bumps, 5- box bodys, 6- filter screens, 7- lithium batteries, 8- Spring is compressed, 9- stepper motors, 10- links, 11- elastic packing plates, 12- vanes, 13- main shafts, 14-, which inhales, considers chamber to be worth doing, 15- filterings Disengagement chamber, 16- shafts.

Embodiment

In order to clarify the technical characteristics of the invention, below by embodiment, and its attached drawing is combined, to this reality It is described in detail with new.Following disclosure provides many different embodiments or example is used for realizing the utility model Different structure.In order to simplify the disclosure of the utility model, hereinafter the component and setting of specific examples are described.In addition, The utility model can in different examples repeat reference numerals and/or letter.This repetition is to simplify and clear mesh , the relation between itself not indicating discussed various embodiments and/or setting.It is it should be noted that illustrated in the accompanying drawings Component is not drawn necessarily to scale.The utility model eliminates description to known assemblies and treatment technology and process to avoid not Necessarily limit the utility model.

As shown in Figs. 1-3, the blackboard eraser that a kind of teaching of the utility model offer is quickly absorbed with break flour, including air outlet pipe 1, Blackboard eraser 2, rotating turret 3, connection bump 4, box body 5, filter screen 6, lithium battery 7, compression spring 8, stepper motor 9, link 10, bullet Property sealing plate 11, vane 12, main shaft 13, inhale bits chamber 14, be separated by filtration chamber 15 and shaft 16, connection bump 4 is arranged on box body 5 End and its be connected by shaft 16 with rotating turret 3, the front-end and back-end of rotating turret 3 be respectively equipped with blackboard eraser 2 and with link 10, company Connect be fixed with frame 10 stepper motor 9 and its by inhale bits chamber 14 connected with chamber 15 is separated by filtration, stepper motor 9 passes through main shaft 13 It is connected with four vanes 12, air outlet pipe 1 is arranged on 5 upper end of box body and its lower end and is equipped with filter screen 6, and lithium battery 7 is arranged on box body 5 It is interior and it is in the rear side of filter screen 6, using elastic packing plate 11 made of elastic rubber be arranged on rotating turret 3 and box body 5 it Between.

The utility model is further arranged to：Lithium battery 7 is connected with stepper motor 9 in a manner of electric connection.

The utility model is further arranged to：The both ends of compression spring 8 are connected with stepper motor 9 and 5 rear end of box body respectively.

The utility model is further arranged to：Elastic packing plate 11 is to be detachably connected with rotating turret 3 and box body 5.

The utility model is further arranged to：Vane 12 is in link 10, and it is under the driving of stepper motor 9, So that air-flow passes sequentially through blackboard eraser 2, suction bits chamber 14 from the external world, is separated by filtration chamber 15, filter screen 6 and air outlet pipe 1, a suction is formed Consider the gas channel of filtering to be worth doing.

By using above-mentioned technical proposal, on the basis of existing ordinary blackboard eraser, blackboard eraser 2 is set to pass through rotating turret 3 and box Body 5 is connected, while sets four vanes 12 driven by stepper motor 9 so that air-flow passes sequentially through the blackboard eraser from the external world 2nd, inhale bits chamber 14, be separated by filtration chamber 15, filter screen 6 and air outlet pipe 1, form a gas channel for inhaling bits filtering, passing through plate When wiping 2 erases the board, break flour is rapidly absorbed into box body 5, and the air in the vertical direction discharged after filtering forms a jet Formula power-assisted, more effortlessly erases the board from top to bottom easy to user；Wherein when in use, fine and close filter screen 6 to from The air-flow for being separated by filtration chamber 15 to air outlet pipe 1 is filtered, since the utility model is to use vertically, the break flour after filtering due to Gravity, can fall on 5 bottom of box body after the completion of one action, filter screen 6 will not be blocked, that is, does not interfere with and make next time With, while when clearing up the break flour in box body 5, due to elastic packing plate 11 and rotating turret 3 and box body 5 can be bolted, Snapping connection etc. and to be detachably connected, after pulling down elastic packing plate 11, press blackboard eraser 2 so that compression spring 8 produces elastic deformation, So that link 10 and blackboard eraser 2 form certain vibration, easy to the discharge of break flour.

One embodiment of the utility model is described in detail above, but the content is only the utility model Preferred embodiment, it is impossible to be construed as limiting the scope of the utility model.It is all to be made according to application scope of the utility model All the changes and improvements etc., should all still belong within the patent covering scope of the utility model.

Claims (5)

1. A kind of 1. blackboard eraser that teaching is quickly absorbed with break flour, it is characterised in that：It is convex including air outlet pipe, blackboard eraser, rotating turret, connection Rise, box body, filter screen, lithium battery, compression spring, stepper motor, link, elastic packing plate, vane, main shaft, inhale bits chamber, mistake Disengagement chamber and shaft are filtered, the connection bump is arranged on the cassette upper end and it passes through the shaft and the rotating turret phase Even, the front-end and back-end of the rotating turret are respectively equipped with the blackboard eraser and the link, institute are fixed with the link State stepper motor and it connects the bits chamber of inhaling with the chamber that is separated by filtration, the stepper motor passes through the main shaft and four The vane is connected, and the air outlet pipe is arranged on the cassette upper end and its lower end is equipped with the filter screen, and the lithium battery is set Put in the box body and it is in the rear side of the filter screen, be arranged on using the elastic packing plate made of elastic rubber Between the rotating turret and the box body.
2. 2. the blackboard eraser that a kind of teaching according to claim 1 is quickly absorbed with break flour, it is characterised in that：The lithium battery It is connected with the stepper motor in a manner of being electrically connected.
3. 3. the blackboard eraser that a kind of teaching according to claim 1 is quickly absorbed with break flour, it is characterised in that：The compression bullet The both ends of spring are connected with the stepper motor and the box body rear end respectively.
4. 4. the blackboard eraser that a kind of teaching according to claim 1 is quickly absorbed with break flour, it is characterised in that：The elasticity is close Sealing plate is to be detachably connected with the rotating turret and the box body.
5. 5. the blackboard eraser that a kind of teaching according to claim 1 is quickly absorbed with break flour, it is characterised in that：At the vane In in the link, and it is under the driving of the stepper motor so that air-flow passes sequentially through the blackboard eraser from the external world, inhales bits Chamber, be separated by filtration chamber, filter screen and air outlet pipe, forms a gas channel for inhaling bits filtering.