CN209365717U - A kind of blackboard eraser with dust-absorbing function - Google Patents

Abstract

The utility model relates to realia fields, disclose a kind of blackboard eraser with dust-absorbing function, including handle, snag on the face of handle one end is set, cavity is formed in the handle, the handle is provided with air inlet on the end face of snag, the handle is far from being provided with multiple dust absorption fans on the end face of snag, the handle lower end is provided with power supply and switch, multiple dust absorption fans are electrically connected with power supply and switch, the upper surface of the handle offers interface, filter assemblies are plugged in the interface and cavity, the filter assemblies include stand frame, filter cotton layer.The utility model has the following advantages that and effect: when dust absorption fan work, chalk dust is entered in cavity with wind-force from air inlet, and then chalk dust is filtered in the filter cotton layer of filter assemblies；And the chalk dust in cavity, in filter cotton layer is cleared up in the filter assemblies under can dismantling at any time, realization, improves filter effect when using next time.

Description

A kind of blackboard eraser with dust-absorbing function

Technical field

The utility model relates to realia field, in particular to a kind of blackboard eraser with dust-absorbing function.

Background technique

Blackboard eraser is essential tool in teaching, and for teacher when using blackboard eraser, chalk dust can be with blackboard eraser Movement fly upward around, lead to the inevitable inhalation of chalk dust of teacher, particularly with the teacher of long campaigns educational work For, powder bits can accumulate over a long period in respiratory system, cause tuberculosis；And chalk dust is flown upward everywhere, can be made to classroom environment At pollution.

Currently, Authorization Notice No. is CN201931885U, authorized announcement date is that the Chinese patent on the 17th of August in 2011 discloses A kind of dust absorption blackboard eraser, including snag, handle, what handle was equipped with snag is provided with multiple circular holes on one side, in circular hole and handle Portion's cavity communicates, and handle internal cavities are provided with multiple dust absorption fans, and handle lower part is provided with a dust cabin with dust lid, inhales Dirt fan passes through sweep-up pipe respectively and communicates with dust cabin, and the one side of handle is provided with battery compartment and switch, dust absorption fan with Battery compartment, switch electrical connection.

But during chalk dust is transported in dust cabin by dust absorption fan, dust absorption fan directly draws chalk dust, The absorption area of the chalk dust of dust absorption fan absorption at this time is smaller, and is not easy to absorb the chalk dust of handle edge, thus Cause the assimilation effect to chalk dust poor.

Utility model content

The purpose of the utility model is to provide a kind of blackboard erasers with dust-absorbing function, have the absorption improved to chalk dust The effect of effect.

The above-mentioned technical purpose of the utility model has the technical scheme that a kind of with dust-absorbing function Blackboard eraser be formed with cavity in the handle, the handle is close including handle, the snag being arranged on the face of handle one end It is provided with multiple rows of in the air inlet for being arranged and being communicated with cavity on the end face of snag, the handle is far from the end face of snag It is provided with multiple for the dust absorption fan that the air of cavity inside is externally discharged, the handle lower end is provided with power supply and opens Close, multiple dust absorption fans and power supply and switch are electrically connected, the upper surface of the handle offer communicated with cavity it is slotting Interface is plugged with partition cavity and the filter assemblies for filtering chalk dust, the filter assemblies in the interface and cavity Including the stand frame being plugged in interface and cavity, the filter cotton layer being arranged on stand frame.

The utility model is further arranged to: multiple supports being distributed along setback threadiness are provided on the stand frame Axis, the filter cotton layer extend around multiple support shafts and in setback threadiness.

The utility model is further arranged to: the filter cotton layer is its length side along the direction that setback threadiness extends To being respectively arranged with fixation kit between the both ends of the stand frame and the both ends of filter cotton layer length direction.

The utility model is further arranged to: the fixation kit includes being hinged on the end of stand frame and for compressing The pressing plate of filter cotton layer, the fixing bolt being connected to across pressing plate rear thread on stand frame.

The utility model is further arranged to: the handle for protruding from interface is provided on the stand frame.

The utility model is further arranged to: the dust absorption fan is partly embedded in cavity close to snag one end, The handle is far from the shield for being provided with covering dust absorption fan on the end face of snag.

The utility model is further arranged to: multiple dust absorption fans along handle length direction arranged distribution.

In conclusion the utility model has the following beneficial effects:

1, when air of the dust absorption fan in the cavity of handle is externally discharged, chalk dust is as wind-force is from air inlet at this time Mouth enters in cavity, and then chalk dust filters the filter cotton layer in filter assemblies, to be filtered to chalk dust；And it can be with When dismantle lower filter assemblies of the plug-in unit in interface and cavity, realize the chalk dust in cavity, in filter cotton layer is carried out it is clear Reason improves filter effect when using next time；

2, the support shaft being distributed in setback threadiness is provided in stand frame, so that filter cotton layer extends in setback threadiness, So as to increase the filter area to chalk dust, to improve the filter effect to chalk dust；

3, fixation kit is provided between filter cotton layer and stand frame, so that passing through after filter cotton layer is used for a long time Fixing bolt is backed out, it can be achieved that the filter cotton layer more renewed, to guarantee the filter effect to chalk dust；

4, the handle on stand frame can conveniently remove filter assemblies, thus the convenient chalk dust in air, filtering Chalk dust on component is cleared up；

5, the shield on handle covers dust absorption fan, to reduce due to finger is rolled into the flabellum of dust absorption fan Caused safety problem.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the circuit connection diagram of dust absorption fan in the utility model, switch and power supply；

Fig. 3 is the partial enlarged view being located at A in Fig. 1.

Appended drawing reference: 1, handle；11, cavity；111, groove；12, air inlet；13, interface；2, snag；3, dust suction wind Fan；4, power supply；5, it switchs；6, filter assemblies；61, stand frame；611, support shaft；612, handle；62, filter cotton layer；7, fixed Component；71, pressing plate；72, fixing bolt；8, shield.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment 1: a kind of blackboard eraser with dust-absorbing function, as shown in Figure 1, being bonded in handle 1 including handle 1, fixation Snag 2 on one end face, is formed with cavity 11 in handle 1.It is offered on the end face of snag 2 in handle 1 multiple rows of in battle array Column distribution and the air inlet 12 communicated with cavity 11, multiple rows of air inlet 12 along handle 1 length direction arranged distribution.

As depicted in figs. 1 and 2, multiple dust absorption fans 3, multiple dust suction wind are installed on end face of the handle 1 far from snag 2 Fan 3 is along the length direction arranged distribution of handle 1, and dust absorption fan 3 is located in cavity 11 close to one end of snag 2, and dust suction wind Fan 3 is for extracting the air in cavity 11 and exhausting air to outside handle 1；And lead on end face of the handle 1 far from snag 2 Cross the shield 8 for being bolted covering dust absorption fan 3；Power supply 4 and switch 5, multiple dust suctions are installed in 1 lower end of handle simultaneously Fan 3 is electrically connected with power supply 4 and switch 5.

As shown in Figure 1, the interface 13 communicated with cavity 11 is offered in the upper surface of handle 1, in interface 13 and sky Partition cavity 11 and the filter assemblies 6 for filtering chalk dust are plugged in chamber 11.Filter assemblies 6 include being plugged on interface 13 With the stand frame 61 in cavity 11, the filter cotton layer 62 that is arranged on stand frame 61.It is formed in the bottom of cavity 11 fluted 111, the bottom of stand frame 61 is plugged in groove 111；It has been wholely set on stand frame 61 multiple along setback threadiness point The support shaft 611 of cloth, multiple support shafts 611 are distributed along the length direction of handle 1；Filter cotton layer 62 bypasses multiple support shafts 611 and in setback threadiness extend；The handle 612 for protruding from interface 13 is fixedly installed on stand frame 61.

As shown in figures 1 and 3, while the direction that extends along setback threadiness of filter cotton layer 62 is its length direction, and mistake The length direction of filter pulp layer 62 is the length direction of handle 1, at the both ends of stand frame 61 alongst and filter cotton layer 62 Fixation kit 7 is respectively arranged between the both ends of length direction.Fixation kit 7 includes the end that stand frame 61 is hinged on by pin shaft Portion and the fixing bolt 72 for being used to compress the pressing plate 71 of filter cotton layer 62, being connected to across 71 rear thread of pressing plate on stand frame 61.

Implementation principle: when air of the dust absorption fan 3 in the cavity 11 of handle 1 is externally discharged, at this time chalk dust with Wind-force entered in cavity 11 from air inlet 12, then chalk dust filtering filter assemblies 6 filter cotton layer 62, thus to powder Ash is filtered；And filter assemblies 6 of the lower plug-in unit in interface 13 and cavity 11 can be dismantled at any time, it realizes to cavity 11 Chalk dust interior, in filter cotton layer 62 is cleared up, and filter effect when using next time is improved；It is provided in stand frame 61 and is in The support shaft 611 of setback threadiness distribution, so that filter cotton layer 62 extends in setback threadiness, so as to increase the filtering to chalk dust Area, to improve the filter effect to chalk dust；It is provided with fixation kit 7 between filter cotton layer 62 and stand frame 61, makes After proper filter cotton layer 62 is used for a long time, by backing out fixing bolt 72, it can be achieved that the filter cotton layer 62 more renewed, to guarantee To the filter effect of chalk dust；Handle 612 on stand frame 61 can conveniently remove filter assemblies 6, thus convenient to air Chalk dust on interior chalk dust, filter assemblies 6 is cleared up；Shield 8 on handle 1 covers dust absorption fan 3, to subtract Safety problem caused by being rolled into the flabellum of dust absorption fan 3 because of finger less.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (7)

1. a kind of blackboard eraser with dust-absorbing function, the snag (2) including handle (1), setting on (1) one end face of handle, It is characterized in that: being formed with cavity (11) in the handle (1), the handle (1) is provided with multiple rows of on the end face of snag (2) In the air inlet (12) for being arranged and communicating with cavity (11), the handle (1) is more far from being provided on the end face of snag (2) A to be used for the dust absorption fan (3) that the internal air of cavity (11) is externally discharged, handle (1) lower end is provided with power supply (4) it is electrically connected with switch (5), multiple dust absorption fans (3) with power supply (4) and switch (5), the upper end of the handle (1) Face offers the interface (13) communicated with cavity (11), is plugged with partition cavity in the interface (13) and cavity (11) (11) and the filter assemblies (6) for filtering chalk dust, the filter assemblies (6) include being plugged on interface (13) and cavity (11) filter cotton layer (62) of stand frame (61), setting on stand frame (61) in.

2. a kind of blackboard eraser with dust-absorbing function according to claim 1, it is characterised in that: on the stand frame (61) Be provided with multiple support shafts (611) being distributed along setback threadiness, the filter cotton layer (62) around multiple support shafts (611) and Extend in setback threadiness.

3. a kind of blackboard eraser with dust-absorbing function according to claim 2, it is characterised in that: the filter cotton layer (62) It is its length direction, the both ends of the stand frame (61) and filter cotton layer (62) length direction along the direction that setback threadiness extends Both ends between be respectively arranged with fixation kit (7).

4. a kind of blackboard eraser with dust-absorbing function according to claim 3, it is characterised in that: the fixation kit (7) Including being hinged on the end of stand frame (61) and being used to compress the pressing plate (71) of filter cotton layer (62), across pressing plate (71) rear thread The fixing bolt (72) being connected on stand frame (61).

5. a kind of blackboard eraser with dust-absorbing function according to claim 1, it is characterised in that: on the stand frame (61) It is provided with the handle (612) for protruding from interface (13).

6. a kind of blackboard eraser with dust-absorbing function according to claim 1, it is characterised in that: the dust absorption fan (3) Close to being partly embedded in cavity (11) for snag (2) one end, it is provided with and covers on the end face of the handle (1) separate snag (2) The shield (8) of lid dust absorption fan (3).

7. a kind of blackboard eraser with dust-absorbing function according to claim 1, it is characterised in that: multiple dust absorption fans (3) along the length direction arranged distribution of handle (1).