CN216231366U - Novel teaching aid - Google Patents

Abstract

The utility model discloses a new type of teaching appliance, which relates to the technical field of teaching appliances. The utility model aims to solve the problem of dust raising. The utility model comprises a frame and a blackboard. One side of the frame is fixed with the blackboard. Gaskets are fixed symmetrically on both sides of the upper side of the frame, a pressurization chamber is opened above the side of the frame away from the blackboard, a first drainage groove is opened above the inside of the frame, and the lower side of the first drainage groove is opened. There is an exit, and the exit points to the bottom of the blackboard. Through the cooperation of the inlet and outlet, the air curtain blown out through the outlet can prevent the raised dust from approaching the user, and the airflow carrying the dust can be inhaled through the inlet for processing, which is inhaled by the user and affects the health of the body. The combination of the inhaled dust can filter out the inhaled dust and deal with the screen that adheres to the dust.

Description

A new type of teaching tool

technical field

The utility model relates to the technical field of teaching appliances, in particular to a novel teaching appliance.

Background technique

Teaching aids are a general term for all kinds of instruments used to enable students to intuitively and vividly understand the teaching content and the instruments used by teachers in teaching. Observation and thinking skills. Generally, it is divided into three categories: ordinary teaching aids, special teaching aids, and children’s teaching aids. The most commonly used teaching aids are blackboards. The existing blackboards will raise a lot of dust when writing with chalk or wiping the blackboard, which will be inhaled by the user and affect the body. Health, according to the survey, long-term inhalation of such dust will increase the probability of causing respiratory diseases, so the problem of dust raising urgently needs to be solved.

Utility model content

In order to solve the above problems, that is, to solve the problems raised by the above background technology, the present utility model proposes a new type of teaching tool, including a frame and a blackboard, one side of the frame is fixed with the blackboard, and the upper two sides of the frame are symmetrically fixed. A gasket is connected, a pressurization chamber is opened above the side of the frame away from the blackboard, a first drainage groove is opened above the inside of the frame, and an outlet is opened on the lower side of the first drainage groove, and the outlet points to the blackboard Below, the first drainage groove communicates with the interior of the booster chamber, a motor is fixed inside the first drainage groove, and a rotating shaft is fixed below the motor through a coupling, and the outer wall of the rotating shaft is fixed. The upper part is fixed with a fan blade, the inner two sides of the frame are symmetrically opened with second drainage grooves, the two sides of the pressurized chamber are symmetrically opened with a plurality of tributary grooves, and the pressurized chamber, the tributary grooves and the second drainage grooves The interior of the frame is interconnected, and both sides and the bottom of the inner wall of the frame are provided with inlets, and the inlets are communicated with the interior of the second drainage groove;

A screen is connected in the middle of the outer wall of the rotating shaft through a bearing, and the screen is fixedly connected with the inner wall of the pressurized bin. A scraper is fixedly sleeved under the outer wall of the rotating shaft, and the scraper is attached to the lower surface of the screen. In combination, an ash discharge slot is opened under the pressurized bin, a chute is opened under the ash discharge slot, and a collection box is slidably clamped inside the chute.

The utility model is further provided as follows: the cross-section of the frame is a trapezoidal cross-section, and the cross-sectional shape of the frame is wide at the top and narrow at the bottom.

The utility model is further configured as follows: the cross-section of the second drainage groove is L-shaped, and a plurality of the tributary grooves are respectively distributed on two straight sides of the L-shaped cross-section of the second drainage groove.

The utility model is further provided as follows: the inner diameter of the pressurizing chamber gradually decreases from bottom to top.

The utility model is further arranged as follows: the lower part of the ash discharge slot points to the inside of the collection box.

The beneficial technical effect of the utility model is: through the cooperation of the inlet and the outlet, the air curtain blown out from the outlet can prevent the raised dust from approaching the user, and the airflow carrying the dust can be inhaled through the inlet for processing, which is inhaled by the user and affects the body. Through the cooperation of the screen and the scraper, the inhaled dust can be filtered out and the dust-adhering screen can be treated, avoiding the time-consuming and laborious operation of removing the screen for cleaning, which is convenient for use. At the same time, through the cooperation of the ash discharge tank and the collection box, the cleaned dust can be collected and processed, which is convenient for the staff to handle the dust in the later stage.

Description of drawings

Figure 1 shows a schematic diagram of the internal left view of the main body.

Figure 2 shows a schematic diagram of the internal rear view structure of the main body.

FIG. 3 shows a schematic top view of the internal structure of the main body.

Reference numerals 1, frame, 2, blackboard, 3, inlet, 4, outlet, 5, first drainage channel, 6, gasket, 7, motor, 8, booster chamber, 9, tributary channel, 10, back plate, 11. Ash discharge tank, 12, Collection box, 13, Second drainage tank, 14, Rotary shaft, 15, Fan blade, 16, Screen mesh, 17, Scraper.

Detailed ways

The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

The utility model proposes a new type of teaching tool, comprising a frame 1 and a blackboard 2, one side of the frame 1 is fixed with a blackboard 2, the cross-section of the frame 1 is a trapezoidal cross-section, and the cross-sectional shape of the frame 1 is wide at the top and narrow at the bottom. A gasket 6 is fixed symmetrically on both sides of the upper part of the frame 1 , a pressurization chamber 8 is opened on the side of the frame 1 away from the blackboard 2 , a first drainage groove 5 is opened on the inside of the frame 1 , and the lower side of the first drainage groove 5 is opened. There is an outlet 4, and the outlet 4 points to the bottom of the blackboard 2. The first drainage groove 5 is communicated with the interior of the pressurized chamber 8. The inner diameter of the pressurized chamber 8 gradually decreases from bottom to top, and the interior of the first drainage groove 5 is solid. A motor 7 is connected, a rotating shaft 14 is fixed below the motor 7 through a coupling, and a fan blade 15 is fixed above the outer wall of the rotating shaft 14. When the user uses it, the external power supply of the motor 7 is connected, and the motor 7 passes through the rotating shaft 14. Drive the fan blade 15 to rotate to push the air flow, and then the user writes or wipes on the blackboard 2 through chalk, and a certain amount of dust will be raised when writing or wiping the blackboard. An air curtain, the raised dust is carried by the airflow of the air curtain, and the second drainage grooves 13 are symmetrically opened on both sides of the inside of the frame 1. The dust is raised and inhaled by the user, which affects the health of the user. There are a plurality of tributary grooves 9 on both sides of the booster chamber 8 symmetrically. At the two straight sides of the L-shaped cross section of the groove 13, and the interior of the booster chamber 8, the tributary groove 9 and the second drainage groove 13 are connected to each other, the inner wall of the frame 1 is provided with an inlet 3 on both sides and below, and the inlet 3 is connected to the second drainage groove 13. The interiors of the two drainage grooves 13 are communicated, and the air flow enters the pressurized chamber 8 through the tributary groove 9;

A screen 16 is rotatably connected to the middle of the outer wall of the rotating shaft 14 through a bearing, and the screen 16 is fixedly connected to the inner wall of the pressurized bin 8. A scraper 17 is fixedly sleeved under the outer wall of the rotating shaft 14, and the scraper 17 is connected to the screen 16. The lower surface is attached to each other, the air flow enters the pressurized bin 8 through the tributary groove 9 to gather and passes through the screen 16, the air flow passes through the screen 16, and the dust in the air flow is intercepted by the screen 16 and attached to the lower surface. 14 Drive the scraper 17 to rotate to scrape the dust. At the same time, the scraper 17 is arc-shaped. Under the push of the arc-shaped structure and the action of centrifugal force, the dust gathers on the edge of the screen. There is an ash discharge slot under the booster bin 8. 11. There is a chute under the ash discharge chute 11, and the collection box 12 is slidably clamped inside the chute. The bottom of the ash discharge chute 11 points to the inside of the collection box 12. When the dust reaches a certain amount, under the action of gravity Drop down, and at the same time, the dust will fall down after the machine is shut down, and the dust will fall into the collection box 12 along the ash discharge chute 11 for storage.

When the user is in use, the external power supply of the motor 7 is turned on, and the motor 7 drives the fan blade 15 to rotate through the rotating shaft 14 to push the air flow, and then the user writes or wipes on the blackboard 2 through the chalk, which will raise when writing or wiping the blackboard. A certain amount of dust is raised, and the air flow through the outlet 4 points to the bottom of the blackboard 2 and is discharged obliquely downward to form an air curtain. The raised dust is carried by the air flow of the air curtain, and flows into the second drainage groove through the inlets 3 on both sides of the frame 1 and below. 13, so as to prevent the dust from being inhaled by the user to affect the health of the body, and then the air flow enters the pressurized bin 8 through the tributary groove 9 to gather and passes through the screen 16, the air flow passes through the screen 16, and the dust in the air flow is screened. 16 is intercepted and attached to the lower surface, and the rotating shaft 14 drives the scraper 17 to rotate to scrape the dust. At the same time, the scraper 17 is arc-shaped, and the dust is gathered at the edge of the screen under the push of the arc-shaped structure and the action of centrifugal force. , when it reaches a certain amount, it will fall down under the action of gravity. At the same time, the dust will also fall down after the machine is stopped. The dust will fall into the collection box 12 along the ash discharge slot 11 for storage. After long-term use, the collection box will be 12. The dust can be discarded and disposed of.

While the invention has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention, in particular, so long as there are no Structural conflicts, the various technical features mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positions The terminology of the relationship is based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as Limitations of the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should also be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The term "comprising" or any other similar term is intended to encompass a non-exclusive inclusion such that a process, article, or device/means comprising a list of elements includes not only those elements, but also other elements not expressly listed, or also includes Elements inherent to these processes, items or equipment/devices.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, but those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. On the premise of not departing from the principle of the present invention, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present invention.

Claims (5)

1. A novel teaching aid, comprising a frame (1) and a blackboard (2), one side of the frame (1) is fixed with the blackboard (2), and the upper two sides of the frame (1) are symmetrically fixed with a blackboard (2). The gasket (6) is characterized in that a pressurization chamber (8) is opened above the side of the frame (1) away from the blackboard (2), and a first drainage groove (5) is opened above the inside of the frame (1). ), an outlet (4) is opened on the lower side of the first drainage groove (5), and the outlet (4) points to the bottom of the blackboard (2). ) are connected with each other, a motor (7) is fixedly connected to the inside of the first drainage groove (5), and a rotating shaft (14) is fixedly connected to the lower part of the motor (7) through a coupling, and the rotating shaft (14) A fan blade (15) is fixed above the outer wall of the frame (1), second drainage grooves (13) are symmetrically opened on both sides of the inner side of the frame (1), and two sides of the pressurization chamber (8) are symmetrically opened with a plurality of The tributary groove (9), and the interior of the pressurization bin (8), the tributary groove (9) and the second drainage groove (13) communicate with each other, and the inner wall of the frame (1) is provided with inlets (3) on both sides and below. ), and the inlet (3) communicates with the interior of the second drainage groove (13); A screen (16) is rotatably connected to the middle of the outer wall of the rotating shaft (14) through a bearing, and the screen (16) is fixedly connected to the inner wall of the booster chamber (8), and the outer wall of the rotating shaft (14) is fixedly sleeved under the outer wall. There is a scraper (17), and the scraper (17) is in contact with the lower surface of the screen (16), and an ash discharge slot (11) is opened below the pressurized bin (8), and the ash discharge slot A chute is opened below (11), and a collection box (12) is slidably clamped inside the chute. 2 . The novel teaching aid according to claim 1 , wherein the cross-section of the frame ( 1 ) is a trapezoidal cross-section, and the cross-sectional shape of the frame ( 1 ) is wide at the top and narrow at the bottom. 3 . 3. A novel teaching tool according to claim 1, characterized in that: the cross section of the second drainage groove (13) is L-shaped, and a plurality of the tributary grooves are respectively distributed in the second drainage groove (13). ) at the two straight sides of the L-section. 4. A new type of teaching tool according to claim 1, characterized in that: the inner diameter of the pressurization chamber (8) gradually decreases from bottom to top. 5. A new type of teaching tool according to claim 1, characterized in that: the lower part of the ash discharge slot (11) points to the inside of the collection box (12).

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