CN103144476A - Automatic dust collection type blackboard eraser - Google Patents
Automatic dust collection type blackboard eraser Download PDFInfo
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- CN103144476A CN103144476A CN2013100664154A CN201310066415A CN103144476A CN 103144476 A CN103144476 A CN 103144476A CN 2013100664154 A CN2013100664154 A CN 2013100664154A CN 201310066415 A CN201310066415 A CN 201310066415A CN 103144476 A CN103144476 A CN 103144476A
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Abstract
The invention relates to an automatic dust collection type blackboard eraser and a cleaning device of a blackboard with a chalk dust collection device, in particular to a negative pressure automatic dust collection type blackboard eraser. The blackboard eraser is T-shaped and comprises an upper part, a middle part and a lower part, wherein the upper part is an upper cover plate; the middle part comprises a dust collection box dumping hole gate plate, two dust filtering sponge blocks, a dust collection box inlet, a middle body, a dust blocking cover, two one-way doors, a vibrator, two springs, a middle cavity, two rectangular holes, two middle cavity air pressure holes, a dust collection box, a dust collection box partition plate, a hand protection cover, two dust collection box air pressure holes and two arc-shaped air channels; and the lower part comprises a lower plate and brush hairs comprising two lower felt hairs and two lower dust collection sponge. The blackboard eraser can be used for effectively collecting dust and fully utilizing energy generated by swinging a hand for erasing the blackboard as a power source, is more environment-friendly and economic in comparison with the blackboard eraser in the prior art, is simple in structure and easy to process, and is suitable for popularization.
Description
Technical field
Technical scheme of the present invention includes the cleaning device of the blackboard of sucking chalk powder device, specifically the automatic dust-catching type blackboard eraser.
Background technology
Common blackboard eraser can produce a large amount of dust when blackboard wiping.New blackboard eraser dust removal ability after using a term descends especially greatly, and is very difficult again that blackboard-cleaning is clean, not only affects student eyesight but also affect teachers and students' health.CN101850685A discloses " dust absorption blackboard eraser ", comprise base, bristle, wet sponge, dust absorption fan, power supply, power switch and screen pack, bristle is fixed on base, base is hollow-core construction, be furnished with base cover, dust absorption fan also is housed in base, the base portion that bristle be housed corresponding with dust absorption fan has a large amount of air suction openings, base one side has a very large steam vent, uses wet sponge to filter.There is following shortcoming in this dust absorption blackboard eraser: 1. dust collection function is realized with battery powered drive driven by motor fan, and is so both uneconomical, and not environmental protection does not again meet the theme of " conservation-minded society "; 2. noise can be sent after electric motor starting, teaching environment can be affected; 3. motor+battery+fan+wet sponge makes the weight of this blackboard eraser integral body large, thereby uses very inconvenient.
Summary of the invention
Technical problem to be solved by this invention is: the automatic dust-catching type blackboard eraser is provided, and is a kind of negative pressure automatic dust-catching type blackboard eraser, and the blackboard eraser that has overcome prior art is uneconomical, not environmental protection and use inconvenient shortcomings.
the present invention solves this technical problem the technical scheme that adopts: the automatic dust-catching type blackboard eraser, it is a kind of negative pressure automatic dust-catching type blackboard eraser, profile is the T font, be divided into, lower three parts of neutralization, top is divided into cover plate of upper layer, mid portion comprises disposal box pour spout flashboard, filter this world silk floss for two, disposal box enters the dirt hole, the middle level body, dust-blocking cover, two unilateral gates, oscillator, article two, spring, the middle level cavity, two rectangular openings, two middle level cavity pressure holes, disposal box, the disposal box dividing plate, hand protecting cover, two disposal box pressure holes and two arc air flues, the bottom is divided and is comprised lower plywood and by two lower body felt hairs and two bristles that lower body dust suction sponge forms, cover plate of upper layer is fixed on the top of middle level body with hitch or screw fastening mode, forms thus above-mentioned upper part, the constituted mode of mid portion is, oscillator is in the cavity of middle level and can moves back and forth in this middle level cavity, each fixes respectively a spring at oscillator the right and left, require the free elongation of a spring rectangular opening place of setting respectively to the cavity two side, middle level just, and two free ends of two springs are separately fixed on the wall of cavity both sides, above-mentioned middle level, in the outside of rectangular opening, a unilateral gate is installed respectively, the first half when disposal box is vertically placed offers square disposal box and advances dirt hole and circular disposal box pressure hole, with the disposal box dividing plate, disposal box is divided into the right and left, every limit each have respectively a disposal box to advance dirt hole and disposal box pressure hole, respectively have a middle level cavity pressure hole in two bottoms, left and right that are positioned at the middle level cavity, the disposal box pressure hole is connected with the arc air flue that middle level cavity pressure hole is offered bottom the body of middle level, respectively lay respectively one at the place, inboard that is positioned at two disposal box pressure holes on disposal box and filter this world silk floss, disposal box pour spout flashboard is arranged on the pour spout square groove place of disposal box, dust-blocking cover is positioned at body lower edge place, middle level, external profile adheres to one week of middle level body lower edge along the middle level by method of attaching, lower body bristle end 2mm after the height of dust-blocking cover will be completed lower than assembling, hand protecting cover is placed in the vertically part left and right sides on the lower side that T shape blackboard eraser is held the T word, one side is fixed on outside disposal box, one side is fixed on the cavity outside, middle level, the hand protecting cover cross section is similar L shaped, each wallboard and the rectangular opening of middle level body, be positioned at two disposal box pressure holes of body below, middle level, disposal box enters the dirt hole, the disposal box dividing plate, two arc air flues and two middle level cavity pressure holes all design in advance, man-hour above each several part monoblock cast is become the middle level body adding, middle level body each several part wall thickness is 2mm, two lower body felt hairs and two lower body dust suction sponges are cemented on lower plywood, form the lower body bristle by two lower body felt hairs that are in respectively the outside with two lower body dust suction sponges that are in inside, article two, the lower body felt hair outside separately is provided with ten lower plywood air suction openings of a row, lower plywood is fixed on the below of middle level body equally with hitch or screw fastening mode, form thus above-mentioned lower part, lay the Upper gasket of square frame-shaped between cover plate of upper layer and middle level cavity, its size is for just can be placed on the recessed edge of middle level cavity, lay lower gasket between lower part and mid portion, its shape is as the criterion with the below that just can put the middle level body into, be cavity between middle lower body between lower plywood and lower gasket, by cavity dividing plate between middle lower body, cavity between middle lower body be divided into two independently air chambers.
Above-mentioned automatic dust-catching type blackboard eraser, between described middle lower body, the thickness of cavity dividing plate is 2mm.
Above-mentioned automatic dust-catching type blackboard eraser, the thickness of described lower gasket and Upper gasket is 2mm.
Above-mentioned automatic dust-catching type blackboard eraser, the diameter of described circular middle level cavity pressure hole is the circle of 10mm, the distance between the cavity pressure hole center of circle, two middle levels is 110mm.
Above-mentioned automatic dust-catching type blackboard eraser, the diameter of the circular disposal box pressure hole on described disposal box is 10mm, the distance between two circular disposal box pressure hole centers of circle is 20mm.
It is rectangle that above-mentioned automatic dust-catching type blackboard eraser, described disposal box enter the dirt hole, and its length is 30mm, and width is 10mm.
Above-mentioned automatic dust-catching type blackboard eraser, described unilateral gate are a plastic tab.
The invention has the beneficial effects as follows:
(1) automatic dust-catching type blackboard eraser of the present invention utilizes oscillator vibration to produce negative pressure, dust adsorption effectively.
(2) automatic dust-catching type blackboard eraser of the present invention forms bristle by felt hair and sponge interval, has not only utilized the mar proof of felt hair but also utilized the good dust suction of sponge.
(3) automatic dust-catching type blackboard eraser of the present invention is with hand protecting cover, and the dust that has swung on a small quantity when preventing from erasing the board is fallen on hand.
(4) automatic dust-catching type blackboard eraser of the present invention adopts pure frame for movement, and the energy that in the time of erasing the board, staff swings fully utilizes as power source, than other blackboard eraser that adopts power supply environmental protection and economy more, and simple in structure, be easy to processing, be suitable for promoting.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the internal structure axis side view of automatic dust-catching type blackboard eraser of the present invention.
Fig. 2 is the integral body assembling axis side view of automatic dust-catching type blackboard eraser of the present invention.
Fig. 3 is vertical A-A generalized section of automatic dust-catching type blackboard eraser of the present invention.
Fig. 4 is the lower part-structure schematic diagram of automatic dust-catching type blackboard eraser of the present invention.
Fig. 5 is the concrete size schematic diagram of middle level body polycrystalline substance of automatic dust-catching type blackboard eraser of the present invention.
Fig. 6 is the concrete size schematic diagram of the upper spacer structure of automatic dust-catching type blackboard eraser of the present invention.
Fig. 7 is the concrete size schematic diagram of the lower gasket structure of automatic dust-catching type blackboard eraser of the present invention.
In figure, 1. disposal box pour spout flashboard, 2. lower plywood, 3. cavity between middle lower body, 4. filter this world silk floss, 5. lower gasket, 6. disposal box advances dirt hole, 7. middle level body, 8. dust-blocking cover, 9. unilateral gate, 10. oscillator, 11. springs, 12. the middle level cavity, 13. rectangular openings, 14. middle level cavity pressure holes, 15. disposal box, 16. hand protecting covers, 17. cover plate of upper layer, 18. disposal box pressure hole, 19. the arc air flue, 20. lower body felt hairs, 21. lower body dust suction sponges, 22. lower plywood air suction opening, 23. cavity dividing plate between middle lower body, 24. Upper gaskets, 25. disposal box dividing plates.
The specific embodiment
Fig. 1 is the internal structure axis side view of automatic dust-catching type blackboard eraser of the present invention, and it shows that the internal structure of automatic dust-catching type blackboard eraser of the present invention comprises that cavity 3 between disposal box pour spout flashboard 1, lower plywood 2, middle lower body, filter this world silk floss 4, lower floor's pad 5, disposal box advance dirt hole 6, middle level body 7, dust-blocking cover 8, unilateral gate 9, oscillator 10, spring 11, middle level cavity 12, rectangular opening 13, middle level cavity pressure hole 14, disposal box 15 and hand protecting cover 16, disposal box pour spout flashboard 1 is arranged on disposal box 15 pour spout square groove places, lower plywood 2 is in the bottom, its top is cavity 3 between middle lower body, lower gasket 5 is placed between the lower floor and middle level of cavity 3 tops between middle lower body, disposal box enters dirt hole 6 and is opened on disposal box 15, dust-blocking cover 8 is positioned at middle level body 7 contour edge places, below, unilateral gate 9 is arranged on the outside of rectangular opening 13, oscillator 10 is placed in the middle of middle level cavity 12, each fixes respectively a spring 11 at oscillator 10 the right and lefts, rectangular opening 13 places that the free elongation of spring 11 arranges respectively to middle level cavity 12 two sides just, and two free ends of two springs 11 are separately fixed on the wall of middle level cavity 12 both sides, hand protecting cover 16 is placed in the vertically part left and right sides on the lower side that T shape blackboard eraser is held the T word, one side is fixed on disposal box 15 outsides, one side is fixed on middle level cavity 12 outsides.Can't show the definite position of filtering this world silk floss 4 in Fig. 1, show and describe below but have in Fig. 3.
In automatic dust-catching type blackboard eraser of the present invention, each wallboard of middle level body 7 and rectangular opening 13 and two disposal box pressure holes 18, disposal boxes being positioned at body below, middle level advance dirt hole 6, two arc air flues 19 and two middle level cavity pressure holes 14 and all design in advance, man-hour above each several part monoblock cast is become middle level body 7 adding, body 7 each several part wall thickness in middle level are 2mm.Hand protecting cover 16 cross sections are similar L shaped.
Fig. 2 shows, the integral body assembling axis side view of automatic dust-catching type blackboard eraser of the present invention, disposal box pour spout flashboard 1, cover plate of upper layer 17, dust-blocking cover 8, unilateral gate 9 and the hand protecting cover 16 of automatic dust-catching type blackboard eraser of the present invention can be seen in the outside, and the position at these parts places.
Fig. 3 shows, from vertical A-A section can see automatic dust-catching type blackboard eraser of the present invention lower plywood 2, the position at cavity dividing plate 23 and disposal box dividing plate 25 and these parts places between cavity 3 between lower body, filter this world silk floss 4, lower gasket 5, middle level body 7, disposal box 15, cover plate of upper layer 17, disposal box pressure hole 18, two lower body felt hairs 20, two lower body dust suction sponges 21, middle lower body.Filter this world silk floss 4 is placed in disposal box 15 inboards of disposal box pressure hole 18, and disposal box dividing plate 25 is divided into independently dust storage chamber of two of left and right with disposal box 15.Be cavity 3 between middle lower body between lower plywood 2 and lower gasket 5, by cavity dividing plate 23 between middle lower body, cavity 3 between middle lower body be divided into two independently air chambers.
Embodiment illustrated in fig. 4 showing, the lower part-structure of automatic dust-catching type blackboard eraser of the present invention comprises lower plywood 2, with two lower body felt hairs 20, two lower body dust suction sponges 21 and lower plywood air suction opening 22, be distributed with two parallel row's lower plywood air suction openings 22 on lower plywood 2, every row is ten.These lower plywood air suction openings 22 are corresponding in two lower body felt hairs 20 outside separately respectively.
Embodiment illustrated in fig. 5 showing, in body 7 substructures of the middle level of automatic dust-catching type blackboard eraser of the present invention, distance between cavity pressure hole 14 centers of circle, two circular middle levels in middle level cavity 12 is 110mm, the diameter of circular middle level cavity pressure hole 14 is 10mm, the diameter of the circular disposal box pressure hole 18 on disposal box 15 is 10mm, and the distance between two disposal box pressure hole 18 centers of circle on disposal box 15 is 20mm; Disposal box enters dirt hole 6 and is rectangle, and its length is 30mm, and width is 10mm; The distance that disposal box advances between the rectangle inner side edge of dirt 6 liang, hole is 42mm; Arc air flue 19 inner arc radius are 40mm, arc air flue 19 outer arc radius 50mm.
Concrete shape and the size that has shown the Upper gasket 24 of automatic dust-catching type blackboard eraser of the present invention embodiment illustrated in fig. 6.Upper gasket 24 is square frame-shaped, and in it, rectangle is 132x36mm, and outer rectangle is 140x74mm, and thickness is 2mm.
Concrete shape and the size that has shown the lower gasket 5 of automatic dust-catching type blackboard eraser of the present invention embodiment illustrated in fig. 7.Lower gasket 5 integral body are the T font, thickness is 2mm, the first half rectangle size is 132x36mm, and the latter half is shaped as the I shape of distortion, and this I shape divides three segment rectangles to demarcate size, under I-shaped, rectangle is of a size of 62x40mm, the I-shaped intermediate rectangular is of a size of 42x30mm, and on I-shaped, rectangular dimension is 70x10mm, and upper rectangle cuts near two jiaos of intermediate rectangular the rectangle that is of a size of 4x2mm, 4mm is on long limit, and 2mm is on broadside.
Embodiment 1
automatic dust-catching type blackboard eraser according to above-mentioned Fig. 1～assembly cost embodiment embodiment illustrated in fig. 7, it is a kind of negative pressure automatic dust-catching type blackboard eraser, profile is the T font, be divided into, lower three parts of neutralization, top is divided into cover plate of upper layer 17, mid portion comprises disposal box pour spout flashboard 1, filter this world silk floss 4 for two, disposal box enters dirt hole 6, middle level body 7, dust-blocking cover 8, two unilateral gates 9, oscillator 10, article two, spring 11, middle level cavity 12, two rectangular openings 13, two middle level cavity pressure holes 14, disposal box 15, disposal box dividing plate 25, hand protecting cover 16, two disposal box pressure holes 18 and two arc air flues 19, the bottom is divided and is comprised lower plywood 2 and by two lower body felt hairs 20 and two bristles that lower body dust suction sponge 21 forms, cover plate of upper layer 17 is fixed on the top of middle level body 7 with hitch or screw fastening mode, forms thus above-mentioned upper part, oscillator 10 is in middle level cavity 12 and can moves back and forth in middle level cavity 12, each fixes respectively a spring 11 at oscillator 10 the right and lefts, rectangular opening 13 places that require that the free elongation of spring 11 arranges respectively to middle level cavity 12 two sides just, and two free ends of two springs 11 are separately fixed on the wall of middle level cavity 12 both sides, in the outside of rectangular opening 13, a unilateral gate 9 is installed respectively, the first half when disposal box 15 vertical placement offers square disposal box and advances dirt hole 6 and circular disposal box pressure hole 18, with disposal box dividing plate 25, disposal box 15 is divided into the right and left, every limit each have respectively a disposal box to advance dirt hole 6 and disposal box pressure hole 18, respectively have a middle level cavity pressure hole 14 in two bottoms, left and right that are positioned at middle level cavity 12, the arc air flue 19 that disposal box pressure hole 18 and middle level cavity pressure hole 14 are offered by middle level body 7 bottoms is connected, respectively lay respectively one at the place, inboard that is positioned at two disposal box pressure holes 18 on disposal box 15 and filter this world silk floss 4, be used for preventing that dust from entering middle level cavity 12 along arc air flue 19, disposal box pour spout flashboard 1 is arranged on the pour spout square groove place of disposal box 15, dust-blocking cover 8 is positioned at middle level body 7 lower edge places, adhere to 7 one weeks of lower edge of middle level body by method of attaching along middle level body 7 outlines, lower body bristle end 2mm after the height of dust-blocking cover 8 will be completed lower than assembling, hand protecting cover 16 is placed in the vertically part left and right sides on the lower side that T shape blackboard eraser is held the T word, one side is fixed on disposal box 15 outsides, one side is fixed on middle level cavity 12 outsides, hand protecting cover 16 cross sections are similar L shaped, each wallboard of middle level body 7 and rectangular opening 13, be positioned at two disposal box pressure holes 18 of middle level body 7 belows, disposal box enters dirt hole 6, disposal box dividing plate 25, two arc air flues 19 and two middle level cavity pressure holes 14 all design in advance, man-hour above each several part monoblock cast is become middle level body 7 adding, body 7 each several part wall thickness in middle level are 2mm, two lower body felt hairs and two lower body dust suction sponges are cemented on lower plywood 2, form the lower body bristle by two lower body felt hairs that are in respectively the outside with two lower body dust suction sponges 21 that are in inside, article two, lower body felt hair 20 outside separately is provided with ten lower plywood air suction openings 22 of a row, lower plywood 2 is fixed on the below of middle level body 7 equally with hitch or screw fastening mode, form thus above-mentioned lower part, lay the Upper gasket 24 of square frame-shaped at cover plate of upper layer 17 and 12 of middle level cavitys, its size is for just can be placed on the recessed edge of middle level cavity 12, lay lower gasket 5 between lower part and mid portion, shape is as the criterion with the below that just can put the middle level body into, be cavity 3 between middle lower body between lower plywood 2 and lower gasket 5, by cavity dividing plate 23 between middle lower body, cavity 3 between middle lower body be divided into two independently air chambers.
Between above-mentioned middle lower body, the thickness of cavity dividing plate 23 is 2mm, and the thickness of lower gasket 5 and Upper gasket 24 is 2mm.Cover plate of upper layer 17 use hitch fastening means are fixed on the top of middle level body 7, and lower plywood 2 is fixed on the below of middle level body 7 equally with the hitch fastening means, and unilateral gate 9 is a plastic tab, has good pliability, the sensitive characteristics of folding.
Be fixed on the top of middle level body 7 except cover plate of upper layer 17 screw fastening modes, lower plywood 2 is fixed on outside the below of middle level body 7 with the screw fastening mode equally, and other are with embodiment 1.
Using method and the principle of the automatic dust-catching type blackboard eraser of embodiment 1 and embodiment 2 are:
when erasing the board, the reciprocating motion of brandishing the oscillator 10 that causes in the automatic dust-catching type blackboard eraser of staff, the reciprocating motion of oscillator 10 in middle level cavity 12 expanded a side air and formed negative pressure, the opposite side air compressing is discharged through unilateral gate 9, negative pressure is through arc air flue 19, circular disposal box pressure hole 18 is to disposal box 15, advancing dirt hole 6 cavity 3 between middle lower body by square disposal box again discharges evenly, lower plywood air suction opening 22 to the lower plywood 2 at last, dust is along above-mentioned reverse back road arrival disposal box 15, due to inboard continuous 4 preventions in filter this world of locating of circular disposal box pressure hole 18 that are positioned on disposal box 15, dust can not enter middle level cavity 12 by arc air flue 19, and be trapped in disposal box 15, the disposal box pour spout flashboard 1 that can open disposal box 15 when a certain amount of when dust collection is poured out dust, hand protecting cover 16 is housed at the place of holding, can reduce the dust that has swung on a small quantity when erasing the board falls on hand, the rub body surrounding that lower body felt hair 20 and lower body dust suction sponge 21 form is provided with dust-blocking cover 8, can prevent that the dust of wiping from wafting, and forms simultaneously a relatively airtight space, is conducive to more effectively dust adsorption.
Under automatic dust-catching type blackboard eraser of the present invention, the both sides of part have lower plywood air suction opening 22, and bristle is comprised of two lower body felt hairs 20 and two lower body dust suction sponges 21, has not only utilized the mar proof of felt hair but also utilized the good dust suction of sponge; The mid portion below has two arc air flues 19, the one end is connected with middle level cavity 12 through middle level cavity pressure hole 14, the other end is connected with disposal box 15 through disposal box pressure hole 18, and be positioned at disposal box 15 inboard place at disposal box pressure hole 18 and be placed with filter this world continuous 4 and be used for preventing that dust from entering middle level cavity 12 along arc air flue 19, with lower gasket 5 with 19 sealings of arc air flue; Have rectangular opening 13 on middle level cavity 12 left and right sides walls, and respectively post the plastic tab of a folding sensitivity, played the unilateral gate 9 of similar check valve effect, it is cavity 3 between middle lower body between lower plywood 2 and lower gasket 5, by cavity dividing plate 23 between middle lower body, cavity 3 between middle lower body is divided into two independently air chambers, this is to adsorb the dust effect for negative pressure is evenly discharged and plays in turn, and oscillator 10 is put in middle level cavity 12, and the spring 11 on its both sides plays stable and accumulation of energy effect.
Claims (7)
1. automatic dust-catching type blackboard eraser, it is characterized in that: be a kind of negative pressure automatic dust-catching type blackboard eraser, profile is the T font, be divided into, lower three parts of neutralization, top is divided into cover plate of upper layer, mid portion comprises disposal box pour spout flashboard, filter this world silk floss for two, disposal box enters the dirt hole, the middle level body, dust-blocking cover, two unilateral gates, oscillator, article two, spring, the middle level cavity, two rectangular openings, two middle level cavity pressure holes, disposal box, the disposal box dividing plate, hand protecting cover, two disposal box pressure holes and two arc air flues, the bottom is divided and is comprised lower plywood and by two lower body felt hairs and two bristles that lower body dust suction sponge forms, cover plate of upper layer is fixed on the top of middle level body with hitch or screw fastening mode, forms thus above-mentioned upper part, the constituted mode of mid portion is, oscillator is in the cavity of middle level and can moves back and forth in this middle level cavity, each fixes respectively a spring at oscillator the right and left, require the free elongation of a spring rectangular opening place of setting respectively to the cavity two side, middle level just, and two free ends of two springs are separately fixed on the wall of cavity both sides, above-mentioned middle level, in the outside of rectangular opening, a unilateral gate is installed respectively, the first half when disposal box is vertically placed offers square disposal box and advances dirt hole and circular disposal box pressure hole, with the disposal box dividing plate, disposal box is divided into the right and left, every limit each have respectively a disposal box to advance dirt hole and disposal box pressure hole, respectively have a middle level cavity pressure hole in two bottoms, left and right that are positioned at the middle level cavity, the disposal box pressure hole is connected with the arc air flue that middle level cavity pressure hole is offered bottom the body of middle level, respectively lay respectively one at the place, inboard that is positioned at two disposal box pressure holes on disposal box and filter this world silk floss, disposal box pour spout flashboard is arranged on the pour spout square groove place of disposal box, dust-blocking cover is positioned at body lower edge place, middle level, external profile adheres to one week of middle level body lower edge along the middle level by method of attaching, lower body bristle end 2mm after the height of dust-blocking cover will be completed lower than assembling, hand protecting cover is placed in the vertically part left and right sides on the lower side that T shape blackboard eraser is held the T word, one side is fixed on outside disposal box, one side is fixed on the cavity outside, middle level, the hand protecting cover cross section is similar L shaped, each wallboard and the rectangular opening of middle level body, be positioned at two disposal box pressure holes of body below, middle level, disposal box enters the dirt hole, the disposal box dividing plate, two arc air flues and two middle level cavity pressure holes all design in advance, man-hour above each several part monoblock cast is become the middle level body adding, middle level body each several part wall thickness is 2mm, two lower body felt hairs and two lower body dust suction sponges are cemented on lower plywood, form the lower body bristle by two lower body felt hairs that are in respectively the outside with two lower body dust suction sponges that are in inside, article two, the lower body felt hair outside separately is provided with ten lower plywood air suction openings of a row, lower plywood is fixed on the below of middle level body equally with hitch or screw fastening mode, form thus above-mentioned lower part.Lay the Upper gasket of square frame-shaped between cover plate of upper layer and middle level cavity, its size is for just can be placed on the recessed edge of middle level cavity, lay lower gasket between lower part and mid portion, its shape is as the criterion with the below that just can put the middle level body into, be cavity between middle lower body between lower plywood and lower gasket, by cavity dividing plate between middle lower body, cavity between middle lower body be divided into two independently air chambers.
2. said automatic dust-catching type blackboard eraser according to claim 1, it is characterized in that: between described middle lower body, the thickness of cavity dividing plate is 2mm.
3. said automatic dust-catching type blackboard eraser according to claim 1, it is characterized in that: the thickness of described lower gasket and Upper gasket is 2mm.
4. said automatic dust-catching type blackboard eraser according to claim 1, it is characterized in that: the diameter of described circular middle level cavity pressure hole is the circle of 10mm, and the distance between the cavity pressure hole center of circle, two middle levels is 110mm.
5. said automatic dust-catching type blackboard eraser according to claim 1, it is characterized in that: the diameter of the circular disposal box pressure hole on described disposal box is 10mm, the distance between two circular disposal box pressure hole centers of circle is 20mm.
6. said automatic dust-catching type blackboard eraser according to claim 1 is characterized in that: it is rectangle that described disposal box enters the dirt hole, and its length is 30mm, and width is 10mm.
7. said automatic dust-catching type blackboard eraser according to claim 1, it is characterized in that: described unilateral gate is a plastic tab.
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| CN201310066415.4A CN103144476B (en) | 2013-03-04 | 2013-03-04 | Automatic dust collection type blackboard eraser |
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| CN201310066415.4A CN103144476B (en) | 2013-03-04 | 2013-03-04 | Automatic dust collection type blackboard eraser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105398265A (en) * | 2014-10-30 | 2016-03-16 | 罗国友 | Dustproof blackboard eraser with function of dust collection |
| CN106626917A (en) * | 2017-02-13 | 2017-05-10 | 河北工业大学 | Blackboard eraser capable of collecting dust automatically |
| CN112606599A (en) * | 2020-12-28 | 2021-04-06 | 姜培文 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398265A (en) * | 2014-10-30 | 2016-03-16 | 罗国友 | Dustproof blackboard eraser with function of dust collection |
| CN105398265B (en) * | 2014-10-30 | 2017-10-13 | 海门市彼维知识产权服务有限公司 | A kind of dust-proof blackboard eraser with dust collection function |
| CN106626917A (en) * | 2017-02-13 | 2017-05-10 | 河北工业大学 | Blackboard eraser capable of collecting dust automatically |
| CN106626917B (en) * | 2017-02-13 | 2018-04-27 | 河北工业大学 | One kind can automatic dust collection blackboard eraser |
| CN112606599A (en) * | 2020-12-28 | 2021-04-06 | 姜培文 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
| CN112606599B (en) * | 2020-12-28 | 2022-07-22 | 山东金太阳教育集团有限公司 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
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|---|---|
| CN103144476B (en) | 2015-07-08 |
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