Flannelette blackboard eraser dust removal device

Abstract

The utility model relates to the field of teaching supplies, and discloses a flannelette blackboard eraser dust removal device which comprises a shell, a dust bouncing device and a dust suction device, and the shell comprises a blackboard eraser box, a working cabin, a sealing cover, a supporting frame and a bottom plate; the working cabin, the supporting frame and the dust bouncing device are fixedly installed above the bottom plate, the blackboard eraser box is arranged in the working cabin in a sliding mode, a plurality of matched elastic rods and incomplete gear combinations are arranged in the dust bouncing device, and the dust suction device is detachably installed on the supporting frame and connected with the lower end of the working cabin in a matched mode. And the sealing cover is sleeved outside the dust bouncing device and forms a closed space with the working cabin. According to the multi-elastic-rod structure, continuous dust removal can be achieved through the combination of the multiple sets of incomplete gears and the elastic rods, intermittent ejection impact can be conducted on all parts of the flannelette blackboard eraser, and therefore comprehensive dust removal is achieved; due to the arrangement of the working cabin and the sealing cover, the whole dust removal process is conducted in the closed shell, the dust suction device can effectively collect chalk dust in the working cabin, dust flying is avoided, and the dust removal effect is obvious.

Description

Technical Field

[0001] The utility model relates to the field of teaching supplies, in particular to a flannel blackboard eraser dust removal device. Background Art

[0002] At present, most of the teaching process still uses chalk to write on the blackboard and uses flannel blackboard erasers to erase. The new flannel blackboard eraser has a good erasing effect at the beginning, but the flannel blackboard eraser is used frequently in daily teaching. When a large amount of chalk dust accumulates on the flannel blackboard eraser, it is difficult or impossible for the flannel blackboard eraser to absorb the chalk dust. At this time, the flannel blackboard eraser is less effective in cleaning chalk writing. Failure to wipe clean the writing affects the quality of the teacher's teaching, and students cannot absorb knowledge well. In addition, when the flannel blackboard eraser that absorbs a lot of chalk dust is used again, it cannot absorb the erased chalk dust well, causing a large amount of chalk dust to fly into the air, thereby affecting the health of the teachers and students.

[0003] At present, the treatment method for flannel blackboard erasers full of chalk dust is mostly manual patting to remove dust. Choose to find a wall outside the classroom and pat the flannel blackboard eraser, or directly use the flannel blackboard eraser to pat the corners of the desk. The above methods can remove the dust adsorbed in the flannel blackboard eraser, but it causes great air pollution and affects the health of teachers and students. The Chinese patent document with patent application number CN202123013226.X discloses a dust-removing blackboard eraser, including a blackboard eraser body and a dust removal device. The dust can be collected during the wiping process of the blackboard by a rotating dust removal component provided with a wiping surface, reducing the falling of dust. The dust is swept into the dust storage chamber by a dust cleaning component for unified collection, but the dust on the blackboard eraser cannot be completely removed, and dust will inevitably fly. In view of the above problems, it is urgent for those skilled in the art to propose a flannel blackboard eraser dust removal device that can continuously remove dust, avoid dust flying, and can remove dust comprehensively. Utility Model Content

[0004] The utility model aims at the above technical problems and provides a flannel blackboard eraser dust removal device, which solves the problems in the prior art that the flannel blackboard eraser has poor dust removal effect and cannot perform dust removal continuously.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The utility model discloses a flannel blackboard eraser dust removal device, comprising a shell (1), a dust ejecting device (2) and a dust collecting device (3). The shell (1) comprises a blackboard eraser box (11), a working cabin (12), a sealing cover (13), a support frame (14) and a bottom plate (15); the working cabin (12) and the support frame (14) are fixedly mounted above the bottom plate (15) in sequence; the blackboard eraser box (11) is slidably arranged in the working cabin (12); a rectangular opening is arranged in the middle of the working cabin (12); one end of the dust ejecting device (2) faces the rectangular opening and is fixedly mounted above the bottom plate (15); the dust collecting device (3) is detachably mounted on the support frame (14); a dust collecting port of the dust collecting device (3) is matched and connected with the lower end of the working cabin (12); and the sealing cover (13) is sleeved on the outside of the dust ejecting device (2).

[0007] Furthermore, the working cabin (12) comprises a dust removal cabin (121) and a dust collection cabin (122); the dust removal cabin (121), the rectangular opening and the dust collection cabin (122) are opened in sequence from top to bottom; the blackboard eraser box (11) is slidably arranged in the dust removal cabin (121); and a dust collection hole matching the dust collection port of the dust collection device (3) is opened on one side of the dust collection cabin (122).

[0008] Furthermore, the dust ejecting device (2) comprises a mounting frame (21), a fixing plate (22), a limiting plate, a driving shaft (24), an incomplete gear (25), a spring rod (26), a spring (27), a limiting ring (28) and a crank (29); two or more hollow mounting plates and a side plate are fixedly arranged in the mounting frame (21); the mounting plates are parallel to the side plates and are arranged at equal intervals; a small hole is provided in the middle of the side plates; the number of the spring rods (26), the spring (27), the limiting ring (28) and the incomplete gear (25) is the same as the number of the mounting plates; the incomplete gear (25) is evenly arranged between the mounting plates and connected in sequence through the driving shaft (24); one end of the driving shaft (24) is rotatably connected to the small hole on the side plate, and the other end is fixed to the outermost mounting plate through the fixing plate (22); the spring rod (26) is provided with a gear matching the incomplete gear (25); the spring rod (26) is connected to the incomplete gear (25) The gears (25) are arranged in pairs, the limit plate is provided with a slot matching the side cross-section of the mounting plate, the side plate and the elastic rod (26), the limit plate comprises a first limit plate (231) and a second limit plate (232), the first limit plate (231) and the second limit plate (232) are respectively vertically clamped at both ends of the mounting plate and the side plate and clamped above the elastic rod (26), the spring (27) is sleeved on one end of the elastic rod (26), and the limit ring (28) is connected by A screw is fixed to the front end of a spring rod (26) sleeved with a spring (27) and facing a rectangular opening in the middle of the working chamber (12); the sealing cover (13) is sleeved on the mounting frame (21) and forms a closed area with the working chamber (12); a shaft hole matching the axial section of the driving shaft (24) is opened on the side of the sealing cover (13) close to the fixing plate (22); the crank (29) is rotatably mounted on the driving shaft (24) through the shaft hole and the fixing plate (22) in turn.

[0009] Furthermore, the number of the incomplete gears (25) is four, and the gears of the four incomplete gears (25) on the drive shaft (24) are staggered in sequence.

[0010] The gears of the four incomplete gears (25) are arranged in a staggered manner in the axial direction.

[0011] Furthermore, the dust collecting device (3) comprises a front cover (31), a sponge sheet (32), a fan blade (33), a motor (34) and a motor cover (35); the motor (34) is mounted in the motor cover (35); the fan blade (33) is rotatably mounted on a rotating shaft of the motor (34); the sponge sheet (32) is arranged in the front cover (31); and the front cover (31) and the motor cover (35) are rotatably connected via a thread.

[0012] Furthermore, the motor cover (35) is provided with a motor bracket (352), and the motor (34) is clamped in the motor bracket (352).

[0013] Furthermore, a slot (311) is provided at one end of the front cover (31) connected to the motor cover (35), a buckle (351) matching the slot (311) is provided at the front end of the motor cover (35), and a heat dissipation port is provided at the rear end of the motor cover (35).

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model designs a multi-elastic rod structure and utilizes a combination of multiple groups of incomplete gears and elastic rods to achieve continuous dust removal, and can perform intermittent ejection impacts on different parts of the flannel blackboard eraser, so that a more effective vibration effect can be generated, and the flannel on the flannel blackboard eraser can be fully dusted; in addition, by arranging a working cabin and a sealing cover, the entire dust removal process can be carried out in a closed shell, and the chalk dust in the working cabin can be effectively collected by a detachable dust suction device, so as to avoid air pollution caused by flying dust, and the dust removal effect is obvious, thereby also reducing the impact of dust on the health of teachers and students. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a cross-sectional view of some parts of the flannel blackboard eraser dust removal device in this embodiment;

[0017] Attached Figure 2 This is a schematic diagram of the overall structure of the flannel blackboard eraser dust removal device in this embodiment;

[0018] Attached Figure 3 An exploded view of the parts of the flannel blackboard eraser dust removal device in this embodiment;

[0019] Attached Figure 4 Schematic diagram of the structure of the dust ejecting device of the flannel blackboard eraser dust removal device in this embodiment;

[0020] Attached Figure 5 It is an enlarged schematic diagram of the dust collection device structure of the flannel blackboard eraser dust removal device in this embodiment;

[0021] Attached Figure 6 It is a partially enlarged cross-sectional view of the dust suction device of the flannel blackboard eraser dust removal device in this embodiment.

[0022] Figure numerals: 1 is a shell; 2 is a dust ejector; 3 is a dust suction device; 4 is a flannel blackboard eraser; 11 is an eraser box; 12 is a working cabin; 121 is a dust removal cabin; 122 is a dust suction cabin; 13 is a sealing cover; 14 is a support frame; 15 is a bottom plate; 21 is a mounting frame; 22 is a fixing plate; 231 is a first limiting plate; 232 is a second limiting plate; 24 is a driving shaft; 25 is an incomplete gear; 26 is a spring rod; 27 is a spring; 28 is a limiting ring; 29 is a crank; 31 is a front cover; 311 is a slot; 32 is a sponge sheet; 33 is a fan blade; 34 is a motor; 35 is a motor cover; 351 is a buckle; 352 is a motor bracket. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the utility model more clear, the utility model is further described in detail in conjunction with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model. Example

[0024] Refer to the attached Figure 1-6 A flannel blackboard eraser dust removal device of the present embodiment includes a shell 1, a dust ejecting device 2 and a dust suction device 3, the shell 1 includes a blackboard eraser box 11, a working cabin 12, a sealing cover 13, a support frame 14 and a bottom plate 15; the dust ejecting device 2 includes a mounting frame 21, a fixing plate 22, a limiting plate, a driving shaft 24, an incomplete gear 25, a spring rod 26, a spring 27, a limiting ring 28 and a crank 29; the dust suction device 3 includes a front cover 31, a sponge sheet 32, a fan blade 33, a motor 34 and a motor cover 35.

[0025] The working cabin 12 and the supporting frame 14 are fixedly installed on the bottom plate 15 from front to back in sequence. The working cabin 12 includes a dust removal cabin 121, a rectangular opening and a dust suction cabin 122 which are opened in sequence from top to bottom. The blackboard eraser box 11 is slidably arranged in the dust removal cabin 121, and the flannel blackboard eraser 4 is placed in the blackboard eraser box 11; a dust suction hole matching the dust suction port of the dust suction device 3 is opened on one side of the dust suction cabin 122, and the dust suction device 3 is detachably installed on the supporting frame 14, and the dust suction port on the front cover 31 of the dust suction device 3 is matched and connected with the dust suction hole on the dust suction cabin 122.

[0026] The mounting frame 21 is fixedly installed above the base plate 15. Four hollow mounting plates and a side plate are fixedly arranged in the mounting frame 21. The four mounting plates are parallel to the side plates and are arranged at equal intervals. A small hole is opened in the middle of the side plate. In this embodiment, there are four spring rods 26, springs 27, limit rings 28 and incomplete gears 25. The four incomplete gears 25 are evenly arranged in the gaps between the four mounting plates and the side plates and are connected in sequence through the drive shaft 24. When observed from the axial direction of the drive shaft 24, the gears on the four incomplete gears 25 are staggered in sequence on the drive shaft 24 to form a gear closure in the axial direction, that is, the first gear on the first incomplete gear 25 on the drive shaft 24 and the last gear on the last incomplete gear 25 are connected in the axial direction. One end of the driving shaft 24 is rotatably connected to the small hole on the side plate, and the other end is fixed to the outermost mounting plate through the fixing plate 22. The four spring rods 26 are respectively provided with gears matching the incomplete gear 25. The four spring rods 26 are respectively matched with the four incomplete gears 25. The limiting plate is provided with a slot matching the mounting plate, the side plate and the side section of the spring rod 26. The limiting plate includes a first limiting plate 231 and a second limiting plate 231. The first limiting plate 231 and the second limiting plate 232 are respectively vertically clamped at both ends of the mounting plate and the side plate and clamped above the spring rod 26. The spring 27 is sleeved on one end of the spring rod 26 and placed outside the first limiting plate 231. The limiting ring 28 is fixed to the front end of the spring rod 26 sleeved with the spring 27 by screws. The spring rod 26 is sleeved with the spring 27 One end of the cover 13 is close to and faces the rectangular opening in the middle of the working cabin 12, the cover 13 is sleeved on the mounting frame 21 and forms a closed interval with the working cabin 12, and an axial hole matching the axial section of the driving shaft 24 is opened on the side of the cover 13 close to the fixing plate 22, and the crank 29 is rotatably installed on the driving shaft 24 through the axial hole and the fixing plate 22 in turn.

[0027] The motor cover 35 is provided with a motor bracket 352, the motor 34 is clamped in the motor bracket 352, the fan blade 33 is rotatably mounted on the rotating shaft of the motor 34, the sponge sheet 32 ​​is arranged in the front cover 31, and the front cover 31 and the motor cover 35 are connected by screw thread rotation. A slot 311 is provided at one end of the front cover 31 connected to the motor cover 35, a buckle 351 matching the slot 311 is provided at the front end of the motor cover 35, and the buckle 351 can be connected to the slot 311 by rotation, and a heat dissipation port is provided at the rear end of the motor cover 35. The motor cover 35 is divided into left and right parts, and the two parts are connected by buckle fitting.

[0028] The working process of this embodiment is as follows: first, the blackboard eraser box 11 is pulled out, and the flannel blackboard eraser 4 is placed therein, and then the blackboard eraser box 11 with the flannel blackboard eraser 4 is pushed back into the dust removal cabin 121; then, check whether the dust suction port on the dust suction device 3 is well matched with the dust suction hole of the dust suction cabin 122, and after confirming that they are well matched, turn on the switch of the dust suction device 3, and manually shake the crank 29 to drive the dust removal device 2 to perform dust removal on the flannel blackboard eraser 4 inside; after the dust removal is completed, take out the flannel blackboard eraser 4.

[0029] The working principle of this embodiment is as follows: shaking the crank 29 drives the drive shaft 24 to rotate, thereby driving the incomplete gear 25 to rotate. When the toothed portion of the incomplete gear 25 cooperates with the toothed portion of the middle section of the spring rod 26, the spring rod 26 will be driven to move backward, and the spring 27 at the front end will be compressed; when the incomplete gear 25 rotates to a toothless state, the spring rod 26 moving backward is reset and impacted forward by the spring 27 compressed at the front end of the first limit plate 231, completing the beating of the flannel blackboard eraser 4. The dust-elastic device 2 includes a total of 4 groups of incomplete gears 25 and spring rods 26. Through the intermittent combination design, different parts of the blackboard eraser can be intermittently impacted. Its vibration can quickly remove the chalk dust adsorbed by the blackboard eraser, and dust is removed in a closed shell, further enhancing the dust removal effect. The chalk dust is effectively removed by the dust suction device to prevent dust from flying.

[0030] Beneficial effects of this embodiment: This embodiment designs a multi-elastic rod structure and utilizes multiple groups of incomplete gears and elastic rod combinations to achieve continuous dust removal of the flannel blackboard eraser, and can perform intermittent ejection impacts on different parts of the flannel blackboard eraser. In this way, a more effective vibration effect can be produced, and the flannel on the flannel blackboard eraser can be fully dusted. In addition, this embodiment can carry out the entire dust removal process in a closed shell by arranging a working cabin and a sealing cover. The chalk dust in the working cabin can be effectively collected by a detachable dust suction device to avoid air pollution caused by flying dust. The dust removal effect is obvious, thereby reducing the impact of dust on the health of teachers and students.

[0031] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flannel blackboard eraser dust removal device, characterized in that: The invention comprises a shell (1), a dust ejecting device (2) and a dust collecting device (3), wherein the shell (1) comprises a blackboard eraser box (11), a working cabin (12), a sealing cover (13), a support frame (14) and a bottom plate (15); the working cabin (12) and the support frame (14) are fixedly mounted above the bottom plate (15) in sequence; the blackboard eraser box (11) is slidably arranged in the working cabin (12); a rectangular opening is arranged in the middle of the working cabin (12); one end of the dust ejecting device (2) faces the rectangular opening and is fixedly mounted above the bottom plate (15); the dust collecting device (3) is detachably mounted on the support frame (14) and a dust collecting port of the dust collecting device (3) is cooperatively connected to the lower end of the working cabin (12); and the sealing cover (13) is sleeved on the outside of the dust ejecting device (2).

2. A flannel blackboard eraser dust removal device according to claim 1, characterized in that: The working cabin (12) comprises a dust removal cabin (121) and a dust collection cabin (122); the dust removal cabin (121), the rectangular opening and the dust collection cabin (122) are opened in sequence from top to bottom; the blackboard eraser box (11) is slidably arranged in the dust removal cabin (121); and a dust collection hole matching the dust collection port of the dust collection device (3) is opened on one side of the dust collection cabin (122).

3. A flannel blackboard eraser dust removal device according to claim 1, characterized in that: The dust ejecting device (2) comprises a mounting frame (21), a fixing plate (22), a limiting plate, a driving shaft (24), an incomplete gear (25), an ejector rod (26), a spring (27), a limiting ring (28) and a crank (29). Two or more hollow mounting plates and a side plate are fixedly arranged in the mounting frame (21). The mounting plate is arranged parallel to the side plate. A small hole is provided in the middle of the side plate. The number of the ejector rod (26), the spring (27), the limiting ring (28) and the incomplete gear (25) is the same as the number of the mounting plates. The incomplete gear (25) is evenly arranged between the mounting plates and connected in sequence through the driving shaft (24). One end of the driving shaft (24) is rotatably connected to the small hole on the side plate, and the other end is fixed to the outermost mounting plate through the fixing plate (22). The ejector rod (26) is provided with a gear matching the incomplete gear (25). The ejector rod (26) is connected to the incomplete gear (25). 5) Paired arrangement, the limit plate is provided with a slot matching the side cross section of the mounting plate, the side plate and the spring rod (26), the limit plate comprises a first limit plate (231) and a second limit plate (232), the first limit plate (231) and the second limit plate (232) are respectively vertically clamped at the two ends of the mounting plate and the side plate and clamped above the spring rod (26), the spring (27) is sleeved on one end of the spring rod (26), the limit ring (28) is fixed by screws to the front end of the spring rod (26) sleeved with the spring (27) and facing the rectangular opening in the middle of the working chamber (12), the sealing cover (13) is sleeved on the mounting frame (21) and forms a closed area with the working chamber (12), the sealing cover (13) is provided with an axial hole matching the axial cross section of the driving shaft (24) on the side close to the fixing plate (22), and the crank (29) is rotatably mounted on the driving shaft (24) through the axial hole and the fixing plate (22) in turn.

4. A flannel blackboard eraser dust removal device according to claim 3, characterized in that: The number of the incomplete gears (25) is four, and the gears of the four incomplete gears (25) on the drive shaft (24) are staggered in sequence.

5. A flannel blackboard eraser dust removal device according to claim 4, characterized in that: The dust collecting device (3) comprises a front cover (31), a sponge sheet (32), a fan blade (33), a motor (34) and a motor cover (35); the motor (34) is mounted in the motor cover (35); the fan blade (33) is rotatably mounted on a rotating shaft of the motor (34); the sponge sheet (32) is arranged in the front cover (31); and the front cover (31) and the motor cover (35) are rotatably connected via a thread.

6. A flannel blackboard eraser dust removal device according to claim 5, characterized in that: The motor cover (35) is provided with a motor bracket (352), and the motor (34) is clamped in the motor bracket (352).

7. A flannel blackboard eraser dust removal device according to claim 5, characterized in that: A slot (311) is provided at one end of the front cover (31) connected to the motor cover (35); a buckle (351) matching the slot (311) is provided at the front end of the motor cover (35); and a heat dissipation port is provided at the rear end of the motor cover (35).

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