A cleaning device for chalk dust in teaching environment

Abstract

The present invention relates to a cleaning technology for chalk dust, and in particular to a cleaning device for chalk dust in a teaching environment. When in use, a conveyor belt conveys chalk dust dropped during chalk writing and erasing to a cleaning box, and a cleaning roller brush cleans the chalk dust remaining on the surface of the conveyor belt onto a partition plate, and then a cleaning mechanism cleans the chalk dust on the partition plate. At the same time, a blackboard eraser can be inserted into a containing space, and during the process, the cleaning roller brush rolls against the side of the blackboard eraser stained with chalk dust to clean the chalk dust on the blackboard eraser. Finally, a retractable compression plate is used to compress the chalk dust cleaned and collected in the containing space on the right side of the cleaning box, thereby completing the cleaning and collection of the chalk dust. The present invention automatically cleans the chalk dust into a cleaning box, and automatically collects and compresses the chalk dust in the cleaning box, thereby reducing manual intervention, saving time and effort, and at the same time, during the cleaning process, preventing the chalk dust from floating back into the air, causing secondary pollution.

Description

Technical Field

[0001] The invention relates to a cleaning technology for chalk dust, in particular to a cleaning device for chalk dust in a teaching environment, aiming to effectively reduce the impact of chalk dust on the teaching environment, equipment and human health. Background Art

[0002] As a traditional writing tool, chalk is widely used in teaching places such as schools and training institutions. However, chalk produces a lot of chalk dust during use, which not only pollutes the environment, but also has a negative impact on teaching equipment, air quality, and the health of teachers and students.

[0003] At present, the cleaning of chalk dust mainly relies on traditional sweeping, wiping or vacuuming methods, but these methods have the following problems: manual cleaning is time-consuming and labor-intensive, and needs to be done frequently. At the same time, during the cleaning process, chalk dust may float back into the air, causing secondary pollution. Summary of the invention

[0004] In view of the deficiencies in the above background technology, the present invention provides a cleaning device for chalk dust in a teaching environment.

[0005] The present invention adopts the following technical solution:

[0006] A cleaning device for chalk dust in a teaching environment, the device comprising a cleaning device installed under a blackboard to collect chalk dust, the cleaning device comprising:

[0007] A collection rack, the collection rack is arranged below the blackboard, the upper surface of the collection rack is open, a conveyor belt is arranged inside the collection rack, and the conveyor belt is arranged corresponding to the open surface;

[0008] A cleaning box, the cleaning box is arranged on the right side of the collection rack, a storage space is arranged inside the cleaning box, and the right end of the collection rack passes through the side of the cleaning box and enters the storage space, a notch is arranged on the upper surface of the right end of the cleaning box and passes through the storage space, a placement plate is arranged below the notch, the placement plate is connected to the side wall of the right end of the storage space, and the blackboard eraser is placed on the placement plate through the notch;

[0009] A cleaning roller brush, the cleaning roller brush is arranged in the accommodating space, the two ends of the rotating shaft of the cleaning roller brush are arranged on the two side plates of the collecting frame to rotate, the cleaning roller brush is driven by the conveyor belt shaft of the conveyor belt, the cleaning roller brush is arranged under the conveyor belt, and the bristles of the cleaning roller brush roll closely against the lower surface of the conveyor belt;

[0010] A partition plate, the partition plate is arranged in the accommodating space, the partition plate is connected to the left end side wall of the accommodating space, and the partition plate is arranged below the cleaning roller brush, the partition plate is used to receive the chalk dust cleaned from the surface of the conveyor belt by the cleaning roller brush, and a compression plate is arranged below the partition plate, the compression plate is driven by a cylinder arranged in the accommodating space below the partition plate to extend left and right, and the partition plate is level with the placement plate;

[0011] A cleaning mechanism, the cleaning mechanism comprising a cleaning plate, a connecting arm, a guide light rod and a guide frame, the cleaning plate being arranged below the cleaning roller brush and moving left and right, the cleaning plate being used to clean the chalk dust on the partition plate, connecting arms being arranged at both ends of the cleaning plate, the surface of the connecting arm passing through a vertical slide groove, a transmission rod being arranged in the slide groove and being able to slide up and down, the transmission rod being connected to the end face of the rotating shaft of the cleaning roller brush, and the transmission rod being eccentrically arranged, guide light rods being arranged on both sides of the connecting arm, the two guide light rods on both sides of the connecting arm being able to slide through the two guide frames, and the guide frames being installed to the side walls of the accommodating space;

[0012] A cleaning roller brush is arranged in the accommodating space, and both ends of the cleaning roller brush are arranged on the side walls of the accommodating space for rotation. When the blackboard eraser is placed on the placement board from the notch, the blackboard eraser is in close contact with the cleaning roller brush, and the cleaning roller brush rolls closely against the side of the blackboard eraser stained with chalk dust.

[0013] As a further improvement, guide plates are provided on both sides of the opening of the collecting rack. The guide plates are arranged at an angle, and the inclination direction of the guide plates is from the collecting rack to the conveyor belt and inclines downward.

[0014] As a further improvement, the two ends of the conveyor belt shaft that enters the accommodating space pass through the two side plates of the collection rack and are connected to the driving pulley, and the two ends of the rotating shaft of the cleaning roller brush pass through the two side plates of the collection rack and are connected to the driven pulley, the driven pulley is connected to the driving pulley by a belt, and the transmission rod is arranged on the side of the driven pulley facing away from the cleaning roller brush.

[0015] As a further improvement, the interior of the rotating shaft of the cleaning roller brush is hollow to form a vibration chamber, and a plurality of balls are built into the vibration chamber. The balls are located in the vibration chamber and roll freely.

[0016] As a further improvement, the connecting arm includes an upper connecting arm and a lower connecting arm, the lower connecting arm is hinged to the bottom end of the upper connecting arm, the slide groove is arranged on the surface of the upper connecting arm, the guide light rod is connected to the side of the upper connecting arm, and the cleaning plate is connected to the surface of the lower connecting arm. When the cleaning plate moves to the left, the lower connecting arm and the cleaning plate are in an inclined state, and when the cleaning plate moves to the right, the lower connecting arm and the cleaning plate are in a vertical state. The cleaning plate in the vertical state is used to clean chalk dust on the partition plate.

[0017] As a further improvement, a ratchet is provided at the hinge of the upper connecting arm and the lower connecting arm, and the ratchet is fixedly connected to the surface of the upper connecting arm, and a connecting groove is opened on the side of one end of the lower connecting arm close to the upper connecting arm, a pawl is provided in the connecting groove, the pawl is arranged in the connecting groove and moves up and down, and the surface of the pawl passes through a positioning groove, and a positioning pin which can slide and rotate relatively is provided in the positioning groove, the positioning pin is fixedly connected to the connecting groove wall, and a positioning spring is provided between the positioning pin and the positioning groove wall, the positioning spring keeps the pawl in the upper limit position, and a one-way spring is provided between the pawl and the connecting groove wall, after the pawl moves up, the one-way spring presses the pawl toward the ratchet, the pawl engages with the ratchet, and after the pawl moves downward, the pawl is separated from the ratchet.

[0018] As a further improvement, a protruding inclined top rod is provided on the side of the guide frame located on the right side of the connecting arm. After the cleaning plate moves to the left, the inclined top rod is used to rotate the lower connecting arm to an inclined state. A reset top rod is provided on the side of the guide frame located on the left side of the connecting arm, and the side surface of the pawl close to the reset top rod is inclined to form a first inclined surface. After the cleaning plate moves to the right, the reset top rod is used to move the pawl downward and separate it from the ratchet, and rotate the lower connecting arm in the inclined state to a vertical state.

[0019] As a further improvement, a limit pin is provided on the wall of the connecting groove, and the limit pin is arranged to face away from the first inclined surface, and the limit pin is used to resist the pawl.

[0020] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: when in use, the chalk dust dropped during the process of writing and erasing with chalk is conveyed to the cleaning box by the conveyor belt, and the chalk dust electrostatically adsorbed on the surface of the conveyor belt is cleaned by the cleaning roller brush and falls on the partition plate, and then the chalk dust on the partition plate is cleaned into the accommodating space on the right side of the cleaning box by the cleaning mechanism, and at the same time, the blackboard eraser can be inserted into the accommodating space from the notch, and during the process, the cleaning roller brush rolls closely against the side of the blackboard eraser stained with chalk dust, cleaning the chalk dust on the blackboard eraser, and the chalk dust falls into the accommodating space on the right side of the cleaning box. Finally, the chalk dust collected in the accommodating space on the right side of the cleaning box is compressed by the compression plate under the telescopic partition plate, thereby completing the cleaning and collection of the chalk dust. The present invention prevents chalk dust from falling to the ground, which is beneficial to maintaining the hygiene of the podium. At the same time, the chalk dust is automatically cleaned into a cleaning box and automatically collected and compressed in the cleaning box, which reduces manual intervention and saves time and effort. At the same time, during the cleaning process, the chalk dust is prevented from being re-scattered into the air to cause secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the blackboard and the cleaning device.

[0022] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the cleaning device.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the collection rack, cleaning roller brush and cleaning mechanism.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the collection rack, conveyor belt and cleaning roller brush.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the cleaning roller brush.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the cleaning roller brush and the cleaning mechanism.

[0027] Figure 7 for Figure 6 Schematic diagram of the structure of A.

[0028] Figure 8 It is a schematic diagram of the planar structure of the driven pulley and the cleaning mechanism.

[0029] Fig. 9 for Figure 8 Schematic diagram of the structure of B.

[0030] Fig.10 It is a schematic diagram of the planar structure when the lower connecting arm is in an inclined state.

[0031] Fig.11 It is a schematic diagram of the planar structure when the lower connecting arm is in a vertical state.

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of a cleaning box, a dust-removing roller brush and a blackboard eraser.

[0033] Fig.13 It is a schematic diagram of the planar structure of a cleaning box, a dust-removing roller brush and a blackboard eraser. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0035] As attached Figure 1 and Figure 2 As shown, a cleaning device for chalk dust in a teaching environment includes a cleaning device 2 installed under a blackboard 1 to collect chalk dust. The cleaning device 2 includes a collecting rack 21, a cleaning box 22, a cleaning roller brush 23, a partition plate 24, a cleaning mechanism 25 and a cleaning roller brush 27.

[0036] As attached Figure 1 and Figure 2 As shown, the collection rack 21 is arranged below the blackboard 1, the upper surface of the collection rack 21 is open, and a conveyor belt 211 is arranged inside the collection rack 21, and the conveyor belt 211 is arranged corresponding to the opening. A cleaning box 22 is arranged on the right side of the collection rack 21, and a accommodating space 221 is arranged inside the cleaning box 22. The right end of the collection rack 21 passes through the side of the cleaning box 22 and enters the accommodating space 221, so that the conveyor belt 211 can convey the chalk dust falling during the chalk writing and erasing process to the cleaning box 22 for collection and cleaning. Among them, the conveyor belt 211 is driven by a motor arranged in the left end of the collection rack 21, so that the conveyor belt 211 can convey the chalk dust.

[0037] Preferably, guide plates 212 are provided on both sides of the opening of the collection rack 21. The guide plates 212 are inclined, and the inclination direction of the guide plates 212 is from the collection rack 21 to the conveyor belt 211, and inclined downward. The guide plates 212 can intercept and guide the chalk dust, so that the chalk dust can accurately fall onto the conveyor belt 211, and will not fall into the gap between the conveyor belt 211 and the collection rack 21, which is difficult to clean.

[0038] The cleaning box 22 has a cleaning roller brush 23 for cleaning the conveyor belt 211 in the accommodating space 221. Figures 2 to 4As shown, the two ends of the rotating shaft 23a of the cleaning roller brush 23 are arranged on the two side plates of the collecting frame 21 through bearings for rotation, and the cleaning roller brush 23 is arranged below the conveyor belt 211, and the bristles 23b of the cleaning roller brush 23 roll closely against the lower surface of the conveyor belt 211. When in use, the chalk dust electrostatically adsorbed on the surface of the conveyor belt 211 is brushed off by the bristles 23b of the cleaning roller brush 23, thereby completing the cleaning of the chalk dust on the conveyor belt 211 to keep the conveyor belt 211 clean. Among them, the cleaning roller brush 23 is driven by the conveyor belt shaft of the conveyor belt 211. Specifically, the two ends of the conveyor belt shaft of the conveyor belt 211 entering the accommodating space 221 penetrate the two side plates of the collecting frame 21 and are connected to the driving pulley 213. The conveyor belt shaft and the collecting frame 21 are rollingly connected through bearings, and the two ends of the rotating shaft 23a of the cleaning roller brush 23 penetrate the two side plates of the collecting frame 21 and are connected to the driven pulley 231. The driven pulley 231 and the driving pulley 213 are connected through a belt 214. When the conveyor belt 211 is started and the chalk dust is conveyed, the conveyor belt shaft drives the cleaning roller brush 23 to roll through the driving pulley 213, the belt 214 and the driven pulley 231 to clean the conveyor belt 211. No additional power is required in the process, which saves energy. In addition, the belt 214 is used to transmit the rolling direction of the cleaning roller brush 23 and the direction of rotation of the conveyor belt shaft, ensuring that the friction between the cleaning roller brush 23 and the lower surface of the conveyor belt 211 is sufficient to clean the chalk dust on the conveyor belt 211.

[0039] Further, as attached Figure 5 As shown, the interior of the rotating shaft 23a of the cleaning roller brush 23 is hollow to form a vibration chamber 233, and a plurality of balls 234 are built in the vibration chamber 233. During the rolling process of the cleaning roller brush 23, the balls 234 are located in the vibration chamber 233 and roll freely. During the rolling and collision process of the balls 234, the rotating shaft 23a of the cleaning roller brush 23 will vibrate, which can shake off the chalk dust remaining on the cleaning roller brush 23 on the one hand, and on the other hand, the vibration is transmitted to the collection frame 21 through the rotating shaft 23a, which can also cause a certain vibration of the guide plate 212, so that the chalk dust on the guide plate 212 falls onto the conveyor belt 211, thereby promoting the collection and cleaning of the chalk dust.

[0040] In addition, as attached Figure 2 , Figure 6 and Fig.13As shown, a partition plate 24 is also provided in the accommodating space 221 of the cleaning box 22. The partition plate 24 is connected to the left side wall of the accommodating space 221 and is provided below the cleaning roller brush 23. The partition plate 24 is used to receive the chalk dust cleaned from the surface of the conveyor belt 211 by the cleaning roller brush 23. A cleaning mechanism 25 is provided above the partition plate 24. The cleaning mechanism 25 is located between the partition plate 24 and the cleaning roller brush 23. The cleaning mechanism 25 is used to clean the chalk dust on the partition plate 24. At the same time, a compression plate 26 is provided below the partition plate 24. The compression plate 26 is driven by a cylinder 263 provided in the accommodating space 221 below the partition plate 24 to extend and retract left and right. When in use, the cleaning mechanism 25 sweeps the chalk dust on the partition plate 24 into the accommodating space 221 on the right side of the cleaning box 22, and then the compression plate 26 is extended and retracted to compress the swept chalk dust into blocks to prevent the chalk dust from scattering around during subsequent cleaning of the cleaning box 22. Specifically, a cleaning port can be opened on the side wall of the cleaning box 22, and the cleaning port is hinged with a switch door, which is used to control the opening and closing of the cleaning port.

[0041] Preferably, the compression plate 26 is composed of a side pressure plate 261 and a top plate 262 disposed on the top of the side pressure plate 261. The side pressure plate 261 is connected to the piston of the cylinder 263, and the top plate 262 covers the lower surface of the partition plate 24 and moves left and right. In the process of the side pressure plate 261 extending outward to squeeze the chalk dust, the chalk dust swept from the partition plate 24 can fall on the top plate 262, preventing the chalk dust from being carried by the side pressure plate 261 to enter the bottom of the partition plate 24, and the chalk dust on the top plate 262 can be scraped off from the top plate 262 by the partition plate 24 when the side pressure plate 261 retracts, thereby ensuring the cleaning and collection effect of the chalk dust.

[0042] The cleaning mechanism 25 is driven by the cleaning roller brush 23. Figures 6 to 8As shown, the cleaning mechanism 25 includes a cleaning plate 251, a connecting arm 252, a guide light rod 254 and a guide frame 255. The cleaning plate 251 is arranged below the cleaning roller brush 23 and moves left and right. The cleaning plate 251 is used to clean the chalk dust on the partition plate 24. Connecting arms 252 are arranged at both ends of the cleaning plate 251. The surface of the connecting arm 252 passes through a vertical slide groove 253. A transmission rod 232 that can slide up and down is arranged in the slide groove 253. The transmission rod 232 is arranged on the side of the driven pulley 231 facing away from the cleaning roller brush 23, and the transmission rod 232 is eccentrically arranged. In addition, guide light rods 254 are arranged on both sides of the connecting arm 252. The two guide light rods 254 on both sides of the connecting arm 252 can slide through the two guide frames 255, and the guide frames 255 are installed to the side walls of the accommodating space 221. When the driven pulley 231 drives the cleaning roller brush 23 to roll, the transmission rod 232 rotates with the driven pulley 231, and the eccentric transmission rod 232 drives the connecting arm 252 to move left and right. During the process, due to the guiding and limiting effect of the guide frame 255 on the guide light rod 254, the connecting arm 252 can only move left and right vertically, thereby driving the cleaning plate 251 located below the cleaning roller brush 23 to move left and right to clean the chalk dust on the partition plate 24. At the same time, the transmission rod 232 slides up and down along the slide slot 253 to avoid.

[0043] It is worth mentioning that Figure 7 As shown, the connecting arm 252 includes an upper connecting arm 2521 and a lower connecting arm 2522, the lower connecting arm 2522 is hinged to the bottom end of the upper connecting arm 2521, the slide groove 253 is arranged on the surface of the upper connecting arm 2521, the guide light rod 254 is connected to the side of the upper connecting arm 2521, and the cleaning plate 251 is connected to the surface of the lower connecting arm 2522. When the cleaning plate 251 moves to the left, the lower connecting arm 2522 and the cleaning plate 251 are in an inclined state. At this time, there is a gap between the cleaning plate 251 and the upper surface of the partition plate 24 to prevent the cleaning plate 251 from sweeping the chalk dust on the partition plate 24 in the opposite direction when the cleaning plate 251 moves to the right. When the cleaning plate 251 moves to the right, the lower connecting arm 2522 and the cleaning plate 251 are in a vertical state, and the cleaning plate 251 in the vertical state is used to clean the chalk dust on the partition plate 24.

[0044] Details are as attached Figures 6 to 10As shown, a ratchet 2523 is provided at the hinge of the upper connecting arm 2521 and the lower connecting arm 2522, and the ratchet 2523 is fixedly connected to the surface of the upper connecting arm 2521, and a connecting groove 2524 is provided on the side of one end of the lower connecting arm 2522 close to the upper connecting arm 2521, and a ratchet 2525 is provided in the connecting groove 2524, and the ratchet 2525 is arranged in the connecting groove 2524 and moves up and down, and the surface of the ratchet 2525 passes through a positioning groove 2527, and a positioning pin 2526 that can slide and rotate relatively is provided in the positioning groove 2527, and the positioning pin 2526 can rotate relatively. 26 is fixedly connected to the wall of the connecting groove 2524, and a positioning spring 2528 is provided between the positioning pin 2526 and the wall of the positioning groove 2527, the positioning spring 2528 keeps the pawl 2525 in the upper limit position, and a one-way spring 2529 is provided between the pawl 2525 and the wall of the connecting groove 2524, after the pawl 2525 moves upward, the one-way spring 2529 presses the pawl 2525 toward the ratchet 2523, the pawl 2525 engages with the ratchet 2523, and after the pawl 2525 moves downward, the pawl 2525 is separated from the ratchet 2523. Among them, the side of the guide frame 255 located on the right side of the connecting arm 252 is provided with a protruding inclined push rod 257. After the cleaning plate 251 moves to the left to clean the chalk dust on the partition plate 24, the cleaning plate 251 continues to move to the left for a distance. During this process, the lower connecting arm 2522 squeezes the inclined push rod 257, and the inclined push rod 257 causes the lower connecting arm 2522 to drive the pawl 2525 to rotate. During the process, the ratchet 2523 squeezes the pawl 2525, and the pawl 2525 rotates around the positioning pin 2526, compressing the one-way spring 2529 to avoid until the cleaning plate 251 moves to the leftmost. At this time, the lower connecting arm 2522 drives the cleaning plate 251 to rotate to an inclined state, so that there is a gap between the cleaning plate 251 and the upper surface of the partition plate 24, so as to prevent the cleaning plate 251 from sweeping the chalk dust on the partition plate 24 in the opposite direction when it moves to the right later.

[0045] A reset push rod 256 is disposed on the side of the guide frame 255 on the left side of the connecting arm 252, and a side surface of the pawl 2525 close to the reset push rod 256 is inclined to form a first inclined surface 25210. Figures 6 to 9 as well as Fig.11As shown, during the movement of the cleaning plate 251 to the right, the reset push rod 256 extends into the connecting groove 2524 and squeezes the first inclined surface 25210. During the process, the ratchet 2523 clamps the pawl 2525, and the first inclined surface 25210 guides the reset push rod 256, so that the pawl 2525 moves downward under the action of the reset push rod 256, compresses the positioning spring 2528, and separates from the ratchet 2523. Then the cleaning plate 251 continues to move to the right. At this time, since the pawl 2525 has been separated from the ratchet 2523, the reset push rod 256 can rotate and reset the inclined lower connecting arm 2522 until the cleaning plate 251 moves to the far right. At this time, the lower connecting arm 2522 drives the cleaning plate 251 to rotate to a vertical state. At the same time, a limit pin 25211 is provided on the wall of the connecting groove 2524 , and the limit pin 25211 is arranged to face away from the first inclined surface 25210 . The limit pin 25211 is used to resist the pawl 2525 to prevent the pawl 2525 from excessively rotating and affecting the engagement and separation between the pawl 2525 and the ratchet 2523 .

[0046] In addition, if attached Fig.12 and Fig.13 As shown, the upper surface of the right end of the cleaning box 22 is provided with a notch 222 penetrating to the accommodating space 221, and a placement plate 223 is provided below the notch 222. The placement plate 223 is connected to the right side wall of the accommodating space 221. The blackboard eraser 3 is placed on the placement plate 223 from the notch 222, and a dust-cleaning roller brush 27 is provided in the accommodating space 221. The two ends of the dust-cleaning roller brush 27 are arranged on the side wall of the accommodating space 221 through bearings for rotation. In the process of placing the blackboard eraser 3 on the placement plate 223 from the notch 222, the blackboard eraser 3 is in close contact with the dust-cleaning roller brush 27, and the dust-cleaning roller brush 27 rolls closely against the side of the blackboard eraser 3 stained with chalk dust to clean the chalk dust on the blackboard eraser 3. After the chalk dust falls into the accommodating space 221 on the right side of the cleaning box 22, it is compressed by the side pressure plate 261, which is convenient for cleaning the chalk dust on the blackboard eraser 3 and preventing the chalk dust from floating everywhere, and is convenient for collecting and compressing the chalk dust on the other hand. The partition plate 24 is flush with the placement plate 223 to prevent the side pressure plate 261 from squeezing the partition plate 24 , and a compression space is formed between the side pressure plate 261 , the placement plate 223 and the cleaning box 22 .

[0047] The present invention also provides a working method of the above-mentioned cleaning device for chalk dust in a teaching environment, the method comprising the following steps:

[0048] The conveyor belt 211 conveys the chalk dust dropped during the chalk writing and erasing process to the cleaning box 22;

[0049] When the conveyor belt 211 is conveying chalk dust, the conveyor belt shaft of the conveyor belt 211 drives the cleaning roller brush 23 to roll through the driving pulley 213, the belt 214 and the driven pulley 231 to clean the chalk dust on the conveyor belt 211. No additional power is required in the process, which saves energy. In addition, the belt 214 is used to transmit the rolling direction of the cleaning roller brush 23 to the same direction as the conveyor belt shaft, ensuring that the friction between the cleaning roller brush 23 and the lower surface of the conveyor belt 211 is sufficient to clean the conveyor belt 211.

[0050] During the rolling of the cleaning roller brush 23, the ball 234 is located in the vibration chamber 233 and rolls freely. During the rolling and collision of the ball 234, the rotating shaft 23a of the cleaning roller brush 23 vibrates. On the one hand, the chalk dust remaining on the cleaning roller brush 23 can be shaken off. On the other hand, the vibration is transmitted to the collecting frame 21 through the rotating shaft 23a, which can also vibrate the guide plate 212 to a certain extent, so that the chalk dust on the guide plate 212 falls onto the conveyor belt 211, thereby promoting the cleaning and collection of the chalk dust.

[0051] The cleaning mechanism 25 sweeps the chalk dust swept off by the cleaning roller brush 23 on the partition plate 24 into the accommodating space 221 on the right side of the cleaning box 22, wherein when the cleaning plate 251 moves to the left, the lower connecting arm 2522 and the cleaning plate 251 are in an inclined state, and there is a gap between the cleaning plate 251 and the upper surface of the partition plate 24; when the cleaning plate 251 moves to the right, the lower connecting arm 2522 and the cleaning plate 251 are in a vertical state, and the cleaning plate 251 in the vertical state is used to clean the chalk dust on the partition plate 24;

[0052] The blackboard eraser 3 is placed on the placement plate 223 through the notch 222. During the process, the blackboard eraser 3 is in close contact with the cleaning roller brush 27, and the cleaning roller brush 27 rolls closely against the side of the blackboard eraser 3 stained with chalk dust, sweeping the chalk dust on the blackboard eraser 3 down into the accommodating space 221 on the right side of the cleaning box 22;

[0053] The compression plate 26 is extended and retracted to compress the chalk dust in the accommodating space 221 on the right side of the cleaning box 22 into blocks.

[0054] In summary, when the present invention is used, the chalk dust dropped during the process of writing and erasing with chalk is conveyed to the cleaning box 22 through the conveyor belt 211, and the chalk dust electrostatically adsorbed on the surface of the conveyor belt 211 is cleaned by the cleaning roller brush 23 and falls on the partition plate 24, and then the chalk dust on the partition plate 24 is cleaned into the accommodating space 221 on the right side of the cleaning box 22 by the cleaning mechanism 25, and at the same time, the blackboard eraser 3 can be inserted into the accommodating space 221 from the notch 222, and the cleaning roller brush 27 rolls closely against the side of the blackboard eraser 3 stained with chalk dust during the process, cleaning the chalk dust on the blackboard eraser 3, and the chalk dust falls into the accommodating space 221 on the right side of the cleaning box 22. Finally, the chalk dust cleaned and collected in the accommodating space 221 on the right side of the cleaning box 22 is compressed by the compression plate 26 under the telescopic partition plate 24, thereby completing the cleaning and collection of the chalk dust. The present invention prevents chalk dust from falling to the ground, which is beneficial to maintaining the hygiene of the podium. At the same time, the chalk dust is automatically cleaned into the cleaning box 22, and the chalk dust is automatically collected and compressed in the cleaning box 22, which reduces manual intervention, saves time and labor, and prevents the chalk dust from floating back into the air during the cleaning process, causing secondary pollution. In addition, a controller is provided on the surface of the cleaning box 22, and the controller is used to drive the operation and use of the device. Specifically, the motor, cylinder 263 and other electrical components are electrically connected to the controller, and the controller is used to control the start and stop of the motor and cylinder 263.

[0055] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A cleaning device for chalk dust in a teaching environment, characterized in that: The device comprises a cleaning device installed under the blackboard to collect chalk dust, and the cleaning device comprises: A collection rack, the collection rack is arranged below the blackboard, the upper surface of the collection rack is open, a conveyor belt is arranged inside the collection rack, and the conveyor belt is arranged corresponding to the open surface; A cleaning box, the cleaning box is arranged on the right side of the collection rack, a storage space is arranged inside the cleaning box, and the right end of the collection rack passes through the side of the cleaning box and enters the storage space, a notch is arranged on the upper surface of the right end of the cleaning box and passes through the storage space, a placement plate is arranged below the notch, the placement plate is connected to the side wall of the right end of the storage space, and the blackboard eraser is placed on the placement plate through the notch; A cleaning roller brush, the cleaning roller brush is arranged in the accommodating space, the two ends of the rotating shaft of the cleaning roller brush are arranged on the two side plates of the collecting frame to rotate, the cleaning roller brush is driven by the conveyor belt shaft of the conveyor belt, the cleaning roller brush is arranged under the conveyor belt, and the bristles of the cleaning roller brush roll closely against the lower surface of the conveyor belt; A partition plate, the partition plate is arranged in the accommodating space, the partition plate is connected to the left end side wall of the accommodating space, and the partition plate is arranged below the cleaning roller brush, the partition plate is used to receive the chalk dust cleaned from the surface of the conveyor belt by the cleaning roller brush, and a compression plate is arranged below the partition plate, the compression plate is driven by a cylinder arranged in the accommodating space below the partition plate to extend left and right, and the partition plate is level with the placement plate; A cleaning mechanism, the cleaning mechanism comprising a cleaning plate, a connecting arm, a guide light rod and a guide frame, the cleaning plate being arranged below the cleaning roller brush and moving left and right, the cleaning plate being used to clean the chalk dust on the partition plate, connecting arms being arranged at both ends of the cleaning plate, the surface of the connecting arm passing through a vertical slide groove, a transmission rod being arranged in the slide groove and being able to slide up and down, the transmission rod being connected to the end face of the rotating shaft of the cleaning roller brush, and the transmission rod being eccentrically arranged, guide light rods being arranged on both sides of the connecting arm, the two guide light rods on both sides of the connecting arm being able to slide through the two guide frames, and the guide frames being installed to the side walls of the accommodating space; A cleaning roller brush is arranged in the accommodating space, and both ends of the cleaning roller brush are arranged on the side walls of the accommodating space for rotation. When the blackboard eraser is placed on the placement board from the notch, the blackboard eraser is in close contact with the cleaning roller brush, and the cleaning roller brush rolls closely against the side of the blackboard eraser stained with chalk dust.

2. A cleaning device for chalk dust in a teaching environment as claimed in claim 1, characterized in that: Guide plates are provided on both sides of the opening of the collecting rack. The guide plates are arranged at an angle, and the inclination direction of the guide plates is from the collecting rack to the conveyor belt and inclines downward.

3. A cleaning device for chalk dust in a teaching environment as claimed in claim 1, characterized in that: The two ends of the conveyor belt shaft entering the accommodating space pass through the two side plates of the collection rack and are connected to the driving pulley, and the two ends of the rotating shaft of the cleaning roller brush pass through the two side plates of the collection rack and are connected to the driven pulley, the driven pulley is connected to the driving pulley by a belt, and the transmission rod is arranged on the side of the driven pulley facing away from the cleaning roller brush.

4. A cleaning device for chalk dust in a teaching environment as claimed in claim 1, characterized in that: The interior of the rotating shaft of the cleaning roller brush is hollow to form a vibration chamber, and a plurality of balls are built in the vibration chamber. The balls are located in the vibration chamber and can roll freely.

5. A cleaning device for chalk dust in a teaching environment as claimed in claim 1, characterized in that: The connecting arm includes an upper connecting arm and a lower connecting arm, the lower connecting arm is hinged to the bottom end of the upper connecting arm, the slide groove is arranged on the surface of the upper connecting arm, the guide light rod is connected to the side of the upper connecting arm, and the cleaning plate is connected to the surface of the lower connecting arm. When the cleaning plate moves to the left, the lower connecting arm and the cleaning plate are in an inclined state, and when the cleaning plate moves to the right, the lower connecting arm and the cleaning plate are in a vertical state. The cleaning plate in the vertical state is used to clean the chalk dust on the partition plate.

6. A cleaning device for chalk dust in a teaching environment as claimed in claim 5, characterized in that: A ratchet is provided at the hinge of the upper connecting arm and the lower connecting arm, and the ratchet is fixedly connected to the surface of the upper connecting arm, and a connecting groove is provided on the side surface of one end of the lower connecting arm close to the upper connecting arm, a pawl is provided in the connecting groove, the pawl is arranged in the connecting groove and moves up and down, and a positioning groove passes through the surface of the pawl, a positioning pin which can slide and rotate relatively is provided in the positioning groove, the positioning pin is fixedly connected to the groove wall of the connecting groove, and a positioning spring is provided between the positioning pin and the groove wall of the positioning groove, the positioning spring keeps the pawl in the upper limit position, and a one-way spring is provided between the pawl and the groove wall of the connecting groove, after the pawl moves up, the one-way spring presses the pawl toward the ratchet, the pawl meshes with the ratchet, and after the pawl moves down, the pawl is separated from the ratchet.

7. A cleaning device for chalk dust in a teaching environment as claimed in claim 6, characterized in that: A protruding inclined push rod is provided on the side of the guide frame located on the right side of the connecting arm. After the cleaning plate moves to the left, the inclined push rod is used to rotate the lower connecting arm to an inclined state. A reset push rod is provided on the side of the guide frame located on the left side of the connecting arm, and the side surface of the pawl close to the reset push rod is inclined to form a first inclined surface. After the cleaning plate moves to the right, the reset push rod is used to move the pawl downward and separate it from the ratchet, and rotate the lower connecting arm in the inclined state to a vertical state.

8. A cleaning device for chalk dust in a teaching environment as claimed in claim 7, characterized in that: A limit pin is provided on the wall of the connecting groove, and the limit pin is arranged to face away from the first inclined surface. The limit pin is used to resist the pawl.

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