CN212353398U - Environment-friendly dust-free blackboard eraser - Google Patents

Abstract

The utility model discloses an environmental protection dustless blackboard eraser, including the blackboard eraser box body, the water storage chamber has been left at the internal top of blackboard eraser box, blackboard eraser box body top is provided with two and holds by the pole, two hold and be provided with the turning handle between the pole, the bottom of turning handle is connected with the lead screw perpendicularly, there is the thread bush through threaded connection on the lead screw, the both ends of thread bush all are connected with the dead lever, the other end of dead lever is fixed on the blackboard eraser box body, the lead screw bottom is connected with the bull stick, the other end of bull stick lets in the water storage intracavity, the bull stick is installing the sealing washer with blackboard eraser box body inner wall juncture, the bottommost of bull stick is connected with the plunger, water storage chamber bottom inner wall is close to plunger department and leaves the recess, the shape size and the plunger looks adaptation of recess, the plunger closely laminates in the recess, recess bottom. Has the advantages that: the utility model discloses a clearance is cleaned to the blackboard to wetted cotton layer, avoids this in-process chalk to fly upward everywhere, has effectively protected the learning environment not to receive the pollution.

Description

Environment-friendly dust-free blackboard eraser

Technical Field

The utility model relates to a dustless blackboard eraser field particularly, relates to a dustless blackboard eraser of environmental protection.

Background

In schools, a blackboard eraser is frequently used, a common blackboard eraser is usually made of a shell and felt, at present, a large amount of chalk dust is generated when the blackboard eraser is used for erasing a blackboard, some chalk flies around, some chalk falls on clothes, and some chalk is sucked into the body of surrounding students and teachers, so that not only is the surrounding environment polluted, but also the health of people is harmed, and in the market, some electric blackboard erasers capable of absorbing dust are also available, but if electric wires are leaked, the electric blackboard erasers have great harm to students, or else, the electric blackboard erasers cannot play a dustproof role.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an environmental protection dustless blackboard eraser to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an environment-friendly dust-free blackboard eraser comprises a blackboard eraser box body, wherein a water storage cavity is reserved at the top in the blackboard eraser box body, two holding rods are arranged at the top of the blackboard eraser box body, the holding rods are U-shaped and are fixed on the blackboard eraser box body in an inverted manner, a rotating handle is arranged between the two holding rods, the bottom of the rotating handle is vertically connected with a screw rod, the screw rod is connected with a threaded sleeve through threads, both ends of the threaded sleeve are connected with fixing rods, the fixing rods are L-shaped, the other ends of the fixing rods are fixed on the blackboard eraser box body, the bottom of the screw rod is connected with a rotating rod, the other end of the rotating rod is led into the water storage cavity, a sealing ring is arranged at the junction of the rotating rod and the inner wall of the blackboard eraser box body, the bottom end of the rotating rod is connected with a plunger, a groove is reserved at the position, which is close to the plunger, of, the shape and size of recess and plunger looks adaptation, the plunger closely laminates in the recess, recess bottom intercommunication has the connecting pipe, the other end of connecting pipe leads to out the water storage chamber.

Furthermore, the other end of connecting pipe is provided with horizontal water pipe, the central point department of putting at horizontal water pipe is connected perpendicularly to the connecting pipe, just the connecting pipe with horizontal water pipe inside intercommunication.

Furthermore, horizontal water pipe is provided with the water spray pinhole, the water spray pinhole is a plurality of, and is adjacent the interval equals between the water spray pinhole.

Further, a sponge layer is arranged on one side of the water spray needle hole, and a cotton cloth layer wraps one side of the sponge layer.

Furthermore, the cotton cloth layer is fixed on the inner wall of the blackboard eraser box body, and the other side of the cotton cloth layer is arranged outside the blackboard eraser box body.

Furthermore, a water inlet pipe is arranged on one side of the top of the blackboard eraser box body, the bottom of the water inlet pipe is communicated with the water storage cavity, and the top of the water inlet pipe is connected with a pipe orifice cover through threads.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a plunger and water spray pinhole effect, plunger play control water spray pinhole play water, have practiced thrift the water, fully soak sponge layer and cotton layer, clean the clearance through wetted cotton layer to the blackboard, simple and practical avoids this in-process chalk to fly upward everywhere, prevents that the chalk from falling on the body or sucking the health of blackboard person, and the effectual learning environment that has protected does not receive the pollution.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an environment-friendly dust-free blackboard eraser according to an embodiment of the present invention;

fig. 2 is a structural sectional view of an environment-friendly dust-free blackboard eraser according to an embodiment of the present invention;

fig. 3 is an enlarged view of fig. 2 at a, according to an embodiment of the present invention;

fig. 4 is an enlarged view of fig. 2 at B according to an embodiment of the present invention.

Reference numerals:

1. a blackboard eraser box body; 2. a water storage cavity; 3. holding the rod; 4. a handle is rotated; 5. a screw rod; 6. a threaded sleeve; 7. fixing the rod; 8. a rotating rod; 9. a seal ring; 10. a plunger; 11. a groove; 12. a connecting pipe; 13. a transverse water pipe; 14. a water spray pinhole; 15. a sponge layer; 16. a cotton cloth layer; 17. a water inlet pipe; 18. and a pipe orifice cover.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-4, an environment-friendly dust-free blackboard eraser according to an embodiment of the present invention includes a blackboard eraser case 1, a water storage cavity 2 is reserved at the top of the blackboard eraser case 1, two holding rods 3 are arranged at the top of the blackboard eraser case 1, the holding rods 3 are U-shaped, the two holding rods 3 are fixed on the blackboard eraser case 1 in an inverted manner, a rotating handle 4 is arranged between the two holding rods 3, the bottom of the rotating handle 4 is vertically connected with a screw rod 5, the screw rod 5 is connected with a threaded sleeve 6 through a thread, both ends of the threaded sleeve 6 are connected with a fixing rod 7, the fixing rod 7 is L-shaped, the other end of the fixing rod 7 is fixed on the blackboard eraser case 1, the bottom of the screw rod 5 is connected with a rotating rod 8, the other end of the rotating rod 8 is inserted into the water storage cavity 2, a sealing ring 9 is installed at a junction of the rotating rod 8 and the inner wall of the blackboard eraser case 1, the bottommost end of bull stick 8 is connected with plunger 10, 2 bottom inner walls in water storage chamber are close to plunger 10 department leaves recess 11, the shape size and the plunger 10 looks adaptation of recess 11, plunger 10 closely laminates in the recess 11, lead screw 5 has certain auto-lock nature, ensures the extrusion recess 11 that plunger 10 can be stable, recess 11 bottom intercommunication has connecting pipe 12, the other end of connecting pipe 12 leads to out water storage chamber 2.

Through the above scheme of the utility model, the other end of the connecting pipe 12 is provided with the transverse water pipe 13, the connecting pipe 12 is vertically connected at the central position of the transverse water pipe 13, the connecting pipe 12 is communicated with the inside of the transverse water pipe 13, the transverse water pipe 13 is provided with a water spray needle hole 14, the water spray needle holes 14 are provided with a plurality of equal intervals, the uniformity of the wetting of the sponge layer 15 is ensured, a sponge layer 15 is arranged on one side of the water spray needle hole 14, a cotton cloth layer 16 is wrapped on one side of the sponge layer 15, the cotton cloth layer 16 is fixed on the inner wall of the blackboard eraser box body 1, the other side of the cotton cloth layer 16 is arranged outside the blackboard eraser box body 1, a water inlet pipe 17 is arranged on one side of the top of the blackboard eraser box body 1, the bottom of the water inlet pipe 17 is communicated with the water storage cavity 2, and the top of the water inlet pipe 17 is connected with a pipe orifice cover 18 through threads.

When the device is used specifically, the pipe orifice cover 18 is unscrewed, water is injected into the water storage cavity 2 from the water inlet pipe 17, the rotating handle 4 is rotated, the screw rod 5 moves upwards relative to the threaded sleeve 6, the screw rod 5 moves upwards to drive the rotating rod 8 and the plunger 10 to move upwards integrally, at the moment, the water in the water storage cavity 2 flows into the connecting pipe 12 and the transverse water pipe 13 from the groove 11, and flows onto the sponge layer 15 and the cotton cloth layer 16 from the water spraying needle holes 14, the sponge layer 15 and the cotton cloth layer 16 are fully soaked, the rotating handle 4 rotates reversely after being wetted, the screw rod 5 moves downwards relative to the threaded sleeve 6, namely, the plunger 10 spirally blocks the groove 11 downwards, at the moment, the water in the water storage cavity 2 does not flow out any more, the rod 3 can be held by hand during use to wipe chalk characters, the chalk flying around is avoided, and the learning environment is effectively protected from being.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The environment-friendly dust-free blackboard eraser is characterized by comprising a blackboard eraser box body (1), wherein a water storage cavity (2) is reserved at the top in the blackboard eraser box body (1), two holding rods (3) are arranged at the top of the blackboard eraser box body (1), the holding rods (3) are U-shaped, the two holding rods (3) are fixed on the blackboard eraser box body (1) in an inverted manner, a rotating handle (4) is arranged between the two holding rods (3), the bottom of the rotating handle (4) is vertically connected with a lead screw (5), the lead screw (5) is connected with a threaded sleeve (6) through threads, two ends of the threaded sleeve (6) are both connected with fixing rods (7), the fixing rods (7) are L-shaped, the other ends of the fixing rods (7) are fixed on the blackboard eraser box body (1), the bottom of the lead screw (5) is connected with a rotating rod (8), the other end of bull stick (8) lets in water storage chamber (2), bull stick (8) install sealing washer (9) with blackboard eraser box body (1) inner wall juncture, the bottommost of bull stick (8) is connected with plunger (10), water storage chamber (2) bottom inner wall is close to recess (11) are left in plunger (10) department, the shape size and the plunger (10) looks adaptation of recess (11), plunger (10) closely laminate in recess (11), recess (11) bottom intercommunication has connecting pipe (12), the other end of connecting pipe (12) leads to out water storage chamber (2).

2. The environment-friendly dust-free blackboard eraser as claimed in claim 1, wherein the other end of the connecting pipe (12) is provided with a transverse water pipe (13), the connecting pipe (12) is vertically connected at the central position of the transverse water pipe (13), and the connecting pipe (12) is communicated with the inside of the transverse water pipe (13).

3. The environment-friendly dust-free blackboard eraser as claimed in claim 2, wherein the transverse water pipe (13) is provided with a plurality of water spray needle holes (14), and the distance between adjacent water spray needle holes (14) is equal.

4. The environment-friendly dust-free blackboard eraser according to claim 3, wherein a sponge layer (15) is arranged on one side of the water spray needle hole (14), and a cotton cloth layer (16) is wrapped on one side of the sponge layer (15).

5. The environment-friendly dust-free blackboard eraser as claimed in claim 4, wherein the cotton cloth layer (16) is fixed on the inner wall of the blackboard eraser box body (1), and the other side of the cotton cloth layer (16) is arranged outside the blackboard eraser box body (1).

6. The environment-friendly dust-free blackboard eraser according to claim 1, wherein a water inlet pipe (17) is arranged on one side of the top of the blackboard eraser box body (1), the bottom of the water inlet pipe (17) is communicated with the water storage cavity (2), and a pipe port cover (18) is connected to the top of the water inlet pipe (17) through threads.

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