WO2023065814A1 - 板擦清洗设备及带有板擦清洗功能的黑板 - Google Patents

板擦清洗设备及带有板擦清洗功能的黑板 Download PDF

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Publication number
WO2023065814A1
WO2023065814A1 PCT/CN2022/114573 CN2022114573W WO2023065814A1 WO 2023065814 A1 WO2023065814 A1 WO 2023065814A1 CN 2022114573 W CN2022114573 W CN 2022114573W WO 2023065814 A1 WO2023065814 A1 WO 2023065814A1
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WO
WIPO (PCT)
Prior art keywords
eraser
water
filter box
blackboard
box
Prior art date
Application number
PCT/CN2022/114573
Other languages
English (en)
French (fr)
Inventor
何玉良
李明涛
李子宽
Original Assignee
石家庄科达教育装备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111234099.8A external-priority patent/CN113953249A/zh
Priority claimed from CN202111235648.3A external-priority patent/CN113858860B/zh
Application filed by 石家庄科达教育装备有限公司 filed Critical 石家庄科达教育装备有限公司
Publication of WO2023065814A1 publication Critical patent/WO2023065814A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00—Blackboard or slate cleaning devices

Definitions

  • the application belongs to the technical field of teaching aid cleaning, and more specifically, relates to an eraser cleaning device and a blackboard with an eraser cleaning function.
  • Blackboard and blackboard eraser are teaching tools commonly used by teachers and other crowds. After writing with chalk, an eraser is needed to clean up the handwriting, which is convenient for subsequent writing. Most of the existing blackboard erasers are provided with a sponge with excellent water absorption effect, and the dust wiped off will gather in the sponge, affecting the erasing of subsequent fonts. Therefore, the blackboard eraser should be cleaned frequently so that the blackboard can be wiped clean.
  • the user After the eraser is used for a period of time, the user generally fills the container with water, and sets a supporting plate at a position higher than the liquid level in the container.
  • a supporting plate When cleaning, first soak the eraser in water to absorb a certain amount of water in the eraser, then transfer the eraser to the supporting board, and press it several times with your hands to discharge the sewage containing dust into the container, so as to achieve the cleaning effect of the eraser.
  • Purpose. Said device is time-consuming and labor-intensive in use, which not only easily pollutes the hands, but also easily causes the overflow of sewage, and the cleaning effect on the blackboard eraser is also poor, which affects the cleanliness of the blackboard.
  • the purpose of this application is to provide an eraser cleaning device and a blackboard with eraser cleaning function, which can clean the eraser conveniently, ensure the cleanliness of the cleaning, improve the cleaning efficiency and the convenience of wiping the blackboard.
  • the present application provides a kind of board eraser cleaning equipment, comprising:
  • the opening is set upward
  • the water filter box is set in the cleaning box and is used to support the eraser.
  • the bottom of the water filter box is provided with a through hole, and a collection chamber at the lower part of the water filter box is formed between the water filter box and the cleaning box;
  • the extruding assembly is arranged above the water filter box and is used for pressing down on the eraser to squeeze out sewage.
  • the extruding assembly has a lower pressing arm that can move up and down to extrude the eraser;
  • the spraying part is arranged above the water filter box and is used for spraying water on the peripheral wall of the eraser;
  • the bottom nozzle is arranged below the water filter box, the opening of the bottom nozzle is upward, and is used for spraying the eraser.
  • the inner bottom wall of the water filter box is provided with an extrusion protrusion protruding upward to increase the contact area with the eraser, and the extrusion protrusion can cooperate with the extrusion assembly to squeeze the eraser.
  • the several through-holes are oblong holes with long axes parallel to each other
  • the extrusion protrusions are bar-shaped protrusions
  • the extension direction of the extrusion protrusions is perpendicular to the length of the oblong holes.
  • the axial direction is arranged, and the extruding protrusion straddles the upper part of the through hole.
  • the upper edge of the filter box is provided with a hanging eaves bent outwards and downwards, and the hanging eaves are used to be hung on the upper edge of the cleaning box.
  • the inner bottom surface of the cleaning tank is provided with several supporting columns extending upwards for supporting the filter box, and the upper end of the supporting columns is provided with an inverted conical platform.
  • the inner wall of the cleaning box is further provided with a limiting platform protruding inward to support the outer edge of the bottom surface of the water filter box, and the top surface of the limiting platform is flush with the top surface of the tapered platform.
  • the middle part of the water filter box is provided with a supporting platform that protrudes upwards to support the eraser, the through hole is arranged on the supporting platform, and a diversion recess is formed between the outer periphery of the supporting platform and the inner wall of the water filtering box. Groove, the guide groove is provided with the water guide hole that runs through from top to bottom.
  • the edge of the support platform is also provided with a limit circle that protrudes upwards to limit the eraser.
  • the longitudinal section of the limit circle is an isosceles triangle.
  • a plurality of water outlet grooves are arranged at intervals on the limit ring for sending sewage outward, and the water outlet grooves correspond to the inside and outside of the water guide hole.
  • the bottom of the cleaning tank is further provided with a drain pipe, and the bottom nozzle corresponds to the through hole up and down.
  • the lower end of the lower pressing arm is provided with a press seat
  • the bottom surface of the press seat has a curvature consistent with the top surface of the eraser
  • the bottom surface of the press seat is provided with a gasket for contacting with the eraser to squeeze the eraser.
  • the eraser cleaning equipment provided in the first aspect above belongs to a general inventive concept.
  • the present application provides a blackboard with an eraser cleaning function, including:
  • the blackboard body has an installation part on one side, and an installation cavity opening outward is provided on the installation part;
  • the water collecting box is arranged at the bottom of the installation cavity
  • the water filter box is set in the water collection box and is used to support the eraser.
  • the water filter box is provided with filter holes through the top and bottom;
  • the water spraying part is arranged at the bottom of the water collecting box, and is located under the water filter box, and is used for spraying water to the eraser;
  • an extruded part is arranged on the top of the installation cavity, and is used for pressing down on the wiper to squeeze out the sewage;
  • the auxiliary nozzle is arranged above the water filter box and is used for spraying the peripheral wall of the eraser.
  • the sprinkler includes:
  • the water supply pipe is arranged through the side wall of the water collecting box;
  • the nozzle, the water nozzle of the nozzle is arranged upwards, and corresponds to the filter hole up and down.
  • the upper edge of the water filter box is provided with a hooking part that is bent outwards to be hung on the upper edge of the water collection box, and the water collection box is provided with an upward extension to support the water filter box.
  • the force-bearing column on the bottom surface of the box is provided with an expansion part extending to the outer periphery at the upper end of the force-bearing column, and the top surface of the expansion part is attached to the bottom surface of the water filter box.
  • extrusions include:
  • Lifting arm the fixed end of the lifting arm is connected to the inner top surface of the installation cavity, and the telescopic end of the lifting arm extends downward;
  • the extruding plate is connected to the telescopic end of the lifting arm, and is used to abut against the top surface of the eraser to extrude the eraser.
  • a downwardly protruding limiting ring is provided on the bottom surface of the extruding plate, and the limiting ring is used to surround the top outer periphery of the eraser to limit the eraser.
  • an opening and closing door for blocking the opening of the installation cavity is hinged on the installation part, and a locking assembly is provided between the side of the opening and closing door away from the hinge point and the installation part, and the locking assembly includes :
  • the locking seat is arranged on the installation part and has a snap-in slot penetrating up and down;
  • One end of the locking bar is rotatably connected to the opening and closing door and can swing in a vertical plane, and the other end is provided with a snapping pin suitable for snapping into the snapping groove.
  • filter holes are respectively provided on the bottom wall and the surrounding wall of the filter box, and the filter holes are oblong holes.
  • the inner bottom surface of the water filter box is provided with criss-cross reinforcing ribs.
  • a drainage groove is provided on the bottom surface of the water filter box, the drainage groove is set close to the peripheral wall of the water filter box, and filter holes are also provided in the drainage groove, and the reinforcing rib is located on the inner ring of the drainage groove.
  • auxiliary nozzles there are several auxiliary nozzles, all of which are set towards the center of the water filter box, and the auxiliary nozzles are arranged obliquely from top to bottom to the side close to the eraser.
  • the eraser cleaning equipment shown in the embodiment of the present application sprays water to the outer periphery of the eraser by using the sprayer, and the eraser absorbs the water to the inside, and the extruding assembly squeezes the eraser to make the adsorbed inside the eraser
  • the water is discharged, and the dust is brought out at the same time.
  • the sewage flows into the collection chamber below through the through hole of the water filter box. Water, improve the water absorption efficiency of the eraser.
  • the equipment is convenient for cleaning the board eraser.
  • Clean water can be used to clean the board eraser, and the dust in the board eraser can be taken out by sewage to ensure the cleanliness of the board eraser, avoiding the re-adsorption of the board eraser to the sewage after cleaning, and ensuring the cleanliness of the board eraser. Improved cleaning efficiency.
  • the installation part on the side of the blackboard body is provided with an installation cavity, and the water collection box and the water filter box are arranged in the installation cavity.
  • the auxiliary nozzle above the water box sprays the peripheral wall of the eraser, and sprays clean water to the bottom of the eraser through the water spraying part under the water filter box.
  • the filter hole of the water filter box falls into the water collection box, which improves the cleaning efficiency of the board eraser and ensures the cleaning quality of the board eraser. convenience of use.
  • Fig. 1 is the partial cross-sectional structural schematic diagram of the first embodiment of the eraser cleaning equipment provided by the embodiment of the present application;
  • Fig. 2 is the sectional structure schematic diagram after removing extruding assembly and blackboard eraser of Fig. 1 of the embodiment of the present application;
  • Fig. 3 is a schematic cross-sectional structure diagram of Embodiment 2 of the eraser cleaning equipment provided in the embodiment of the present application (extrusion components are removed);
  • Fig. 4 is a top view structural schematic diagram of another embodiment of the water filter box provided by the embodiment of the present application.
  • Fig. 5 is the structural representation of the blackboard with eraser cleaning function that the embodiment of the application provides;
  • Fig. 6 is a schematic diagram of a partially enlarged structure after removing the opening and closing door in Fig. 5 of the embodiment of the present application;
  • FIG. 7 is a schematic diagram of a partially enlarged structure of I in FIG. 6 of the embodiment of the present application.
  • Fig. 8 is a top view structural schematic diagram of the water filter box in Fig. 6 of the embodiment of the present application.
  • FIG. 9 is a partial cross-sectional structural schematic diagram of A-A in FIG. 6 of the embodiment of the present application.
  • Blackboard body 71 , installation part; 72, installation cavity; 8, water collection box; 81, force column; 82, expansion part; 9, water spraying part; 91, water supply pipe; 92, nozzle; 151, lifting arm; 152, extrusion plate; 153, limit ring; 16, opening and closing door; 131, locking bar; 132, locking seat.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or several of these features. In the description of the present application, “several” means two or more, unless otherwise specifically defined.
  • Eraser cleaning equipment including a cleaning box 1, a water filter box 2, an extruding assembly 3, a spray piece 4 and a bottom nozzle 41, the opening of the cleaning box 1 is set upward; the water filter box 2 is set in the cleaning box 1 for supporting The eraser 6, the bottom of the water filter box 2 is provided with a through hole 21, and the collecting cavity 11 located at the bottom of the water filter box 2 is formed between the water filter box 2 and the cleaning box 1; the extrusion assembly 3 is arranged above the water filter box 2, Used to press the eraser 6 to squeeze out sewage, the extruding assembly 3 has a lower pressing arm 31 that can move up and down to squeeze the eraser 6; Water is sprayed on the wall; the bottom nozzle 41 is arranged below the water filter box 2 , and the opening of the bottom nozzle 41 is upward for spraying the eraser 6 .
  • the eraser cleaning equipment utilizes the spray member 4 to spray water to the periphery of the eraser 6, the eraser 6 absorbs the water to the inside, and the extrusion assembly 3 squeezes the eraser 6 to make the eraser
  • the water adsorbed in 6 is discharged, and the dust is brought out at the same time, the sewage flows into the collection chamber 11 below through the through hole 21 of the water filter box 2, and while the outer peripheral part of the eraser 6 is sprayed by the sprayer 4, Also spray water on the bottom of the blackboard eraser 6 by means of the bottom spray nozzle 41 to improve the water absorption efficiency of the blackboard eraser 6 .
  • This equipment is convenient for cleaning the board eraser 6. Clean water can be used to clean the board eraser 6.
  • the dust is discharged through the pressing action of the extrusion assembly 3, so as to ensure the cleanliness of the board eraser 6 and avoid the re-adsorption of the board eraser 6 to the cleaned sewage, ensuring The thoroughness of cleaning improves the cleanliness of the blackboard eraser 6 .
  • the above characteristic water filter box 2 can adopt the structure as shown in FIG. 4 .
  • the inner bottom wall of the water filter box 2 is provided with an extrusion protrusion 22 protruding upward to increase the contact area with the eraser 6 , and the extrusion protrusion 22 can cooperate with the extrusion assembly 3 to squeeze the eraser 6 .
  • Squeeze protrusions 22 are arranged on the inner bottom wall of the filter box 2 , and the squeeze protrusions 22 can increase the contact area with the bottom of the eraser 6 .
  • the moisture inside the blackboard eraser 6 can be squeezed out quickly, and the dust is taken out of the blackboard eraser 6 by sewage and sent into the collection chamber 11.
  • the contact area between them improves the extrusion effect of the extrusion assembly 3, effectively improves the extrusion efficiency, and ensures the cleanliness of the eraser 6 for cleaning.
  • the above-mentioned characteristic through hole 21 may adopt a structure as shown in FIG. 4 .
  • the several through-holes 21 are oblong holes with long axes parallel to each other, the extruding protrusions 22 are bar-shaped protrusions, and the extension direction of the extruding protrusions 22 is perpendicular to the elongated circle
  • the hole is arranged in the long axis direction, and the extruding protrusion 22 straddles above the through hole 21 .
  • the water filter box 2 is provided with a plurality of through holes 21, so as to transport the water extruded from the eraser 6 to the collection chamber 11, so as to prevent the sewage extruded from the eraser 6 from accumulating in the water filter box 2, thereby affecting the follow-up of the eraser 6. cleaning effect.
  • the through hole 21 is an oblong hole, and since the oblong hole has a larger water passing area, it can quickly guide the sewage into the collection chamber 11 .
  • the extruding protrusion 22 adopts the structural form of a bar-shaped protrusion, which helps to increase the structural strength of the water filter box 2, and avoids the attenuation of the strength of the water filter box 2 caused by the through hole 21 arranged on the water filter box 2, so that the filter box 2
  • the water box 2 can effectively support the blackboard eraser 6 and withstand the downward pressure of the extrusion assembly 3, so that the cleaning process of the blackboard eraser 6 can be carried out smoothly.
  • the extrusion protrusion 22 straddles the through hole 21 without affecting the water passing area of the through hole 21 and at the same time increases the structural strength of the water filter box 2 .
  • the extension direction of the extrusion protrusion 22 is perpendicular to the long axis direction of the through hole 21, on the one hand, it can avoid blocking the through hole 21 to the greatest extent, and on the other hand, it can also avoid the strength caused by the setting of the through hole 21. Attenuation, the extrusion protrusion 22 can effectively connect the areas on both sides of the through hole 21, and the extrusion protrusion 22 and the solid area between two adjacent through holes 21 form a criss-cross grid structure, which improves the water filter box.
  • the structural strength of 2 is convenient to resist the downward pressure exerted on the water filter box 2 during the extrusion process of the extrusion component 3, which ensures the structural stability of the water filter box 2 and prolongs the service life of the equipment.
  • the above-mentioned characteristic water filter box 2 adopts the structures shown in FIG. 2 and FIG. 3 .
  • the upper edge of the water filter box 2 is provided with a hanging eaves 23 bent outwards and downwards, and the hanging eaves 23 are used to hang on the upper edge of the cleaning box 1 .
  • the form of fixed connection between the filter box 2 and the cleaning box 1 can be adopted, and the form of detachable connection can also be adopted.
  • various connection methods such as clip connection, thread connection or plug connection can be used for connection, which are not specifically limited here.
  • hanging eaves 23 are provided on the upper edge of the water filter box 2 , and the hanging eaves 23 are connected to the edge of the water filter box 2 , extend toward the outer periphery of the water filter box 2 and then bend downwards.
  • Hanging eaves 23 form an accommodation space with an opening downward, and the upper edge of the cleaning box 1 can be stretched into the above-mentioned accommodation space.
  • the water filter box 2 can be easily removed from the cleaning box 1 to facilitate subsequent cleaning of the cleaning box 1 .
  • the inner bottom surface of the cleaning tank 1 is provided with several support columns 12 extending upwards and used to support the filter box 2, and the upper end of the support columns 12 is provided with an inverted tapered The conical platform 13.
  • the extrusion assembly 3 Since the extrusion assembly 3 is pressed down, the water filter box 2 will be subjected to a relatively large downward force.
  • the setting of the extruded protrusion 22 can ensure the structural stability of the filter box 2, and it is also necessary to ensure the relative position between the filter box 2 and the cleaning box 1 by means of the support column 12 arranged on the inner bottom surface of the cleaning box 1. stability.
  • the bottom of the water filter box 2 can be abutted against the top of the support column 12, and the support column 12 provides a reliable supporting force to avoid the pressure on the water filter box 2 Structural damage caused by oversize.
  • a conical platform 13 is provided on the upper end of the supporting column 12 .
  • the large-diameter end of the conical table 13 is set upwards, which can reliably support the water filter box 2, effectively resist the downward pressure of the extrusion assembly 3, and ensure the maximum extrusion effect of the lower pressing arm 31 on the eraser 6, so that the eraser The sewage in 6 can be discharged quickly and timely.
  • a pressing seat 32 is provided at the lower end of the lower pressing arm 31, and the bottom surface of the pressing seat 32 has a The consistent curvature of the top surface of the eraser 6 can realize lamination of a relatively large area on the top surface of the eraser 6 .
  • a gasket 33 is also provided on the bottom surface of the pressing seat 32, and the gasket 33 is a flexible member made of rubber or silica gel, which can form a flexible contact with the eraser 6 to realize the downward pressure on the eraser 6. Uniform distribution ensures that each point on the lower part of the eraser 6 can be effectively squeezed, improving the discharge speed of sewage.
  • the characteristic cleaning tank 1 described above may adopt a structure as shown in FIG. 2 .
  • the inner side wall of the cleaning box 1 is also provided with a limiting platform 14 protruding inward to support the outer edge of the bottom surface of the filter box 2, and the top surface of the limiting platform 14 and the top surface of the conical platform 13 (that is, the end face of the small diameter of the tapered platform 13) flush.
  • the edge of the water filter box 2 will form a larger downward pressure on the upper edge of the cleaning box 1, in order to avoid
  • the damage caused by excessive pressure on the hanging eaves 23 is also provided with a limiting platform 14 on the inner wall of the cleaning box 1.
  • the limiting platform 14 protrudes to the center of the collection chamber 11, and is realized by means of the top surface of the limiting platform 14. Effective support for the position of the peripheral edge of the bottom surface of the water filter box 2 .
  • the limiting platform 14 extends circumferentially on the inner wall of the water filter box 2 to form a closed ring, which can evenly support the edges around the bottom of the water filter box 2 to ensure that the force of the water filter box 2 is balanced.
  • the extrusion cleaning effect of the blackboard eraser 6 is guaranteed, and the cleaning quality is improved.
  • the above characteristic water filter box 2 can adopt the structure shown in Fig. 1-Fig. 3 .
  • the middle part of the water filter box 2 is provided with a support platform 24 that protrudes upwards to support the eraser 6.
  • the through hole 21 is arranged on the support platform 24, and a guide is formed between the outer periphery of the support platform 24 and the inner wall of the water filter box 2.
  • the flow groove 26 and the flow guide groove 26 are provided with a water guide hole 27 penetrating up and down.
  • a support platform 24 is provided in the middle of the water filter box 2, and the support platform 24 is used for supporting Supporting the eraser 6, the bottom of the eraser 6 is higher than the bottom of the diversion groove 26, and the sewage overflowed from the periphery of the eraser 6 is guided into the collection chamber 11 by the diversion groove 26.
  • the sewage discharged from the bottom surface of the blackboard eraser 6 flows into the collection chamber 11 through the through hole 21 on the support platform 24, which realizes the sub-area diversion of the sewage, facilitates the improvement of the sewage discharge efficiency, and avoids the accumulation of sewage caused by the slow discharge speed. , Affect the cleaning efficiency of blackboard eraser 6.
  • the water guide hole 27 is also an oblong hole, and extends for a certain length along the direction of the guide groove 26, so as to increase the discharge speed of sewage.
  • the feature supporting platform 24 may adopt the structure shown in FIG. 3 .
  • the edge of the support platform 24 is also provided with a limit ring 25 protruding upwards to limit the eraser 6.
  • the longitudinal section of the limit ring 25 is an isosceles triangle .
  • a limit ring 25 is also provided on the outer peripheral edge of the supporting platform 24, and the limit ring 25 is used to be sleeved on the outer periphery of the eraser 6 to limit the planar position of the eraser 6.
  • the vertical section of the limit ring 25 is triangular, which can reduce the amount of material and reduce the cost of components on the one hand.
  • the inner surface of the limit ring 25 can guide the insertion direction of the eraser 6, so that it can enter the limit ring smoothly.
  • the placement efficiency is improved, and the bottom of the inside surface of the limit ring 25 can be used to form a reliable limit for the eraser 6, avoiding the removal of the eraser 6 caused by directly setting the internal size of the limit ring 25 to be consistent with the size of the eraser 6 difficult question.
  • the above-mentioned characteristic limiting ring 25 may adopt the structure shown in FIG. 4 .
  • a plurality of water outlet grooves 28 are arranged at intervals on the limit ring 25 for guiding sewage outward, and the water outlet grooves 28 correspond to the inside and outside of the water guide holes 27 .
  • Limiting ring 25 is carrying out position limitation to blackboard eraser 6 while, in order to avoid that limiting ring 25 influences the sewage in blackboard eraser 6 to be discharged to the periphery, on limiting ring 25, a plurality of water outlet grooves 28 are set, and water outlet grooves 28 and water guide The inside and outside of the hole 27 correspond to each other, which is convenient for the rapid discharge of sewage, shortens the retention time of sewage in the diversion groove 26, ensures that the sewage in the eraser 6 is discharged into the collection chamber 11, and improves the cleaning efficiency of the eraser 6.
  • the characteristic cleaning tank 1 above adopts the structure shown in Fig. 1 and Fig. 2 . 1 and 2, the bottom of the cleaning tank 1 is also provided with a drain pipe 5, and the bottom nozzle 41 corresponds to the through hole 21 up and down.
  • a bottom spray head 41 is arranged below the water filter box 2 , and while the outer peripheral portion of the blackboard eraser 6 is sprayed by the sprayer 4 , water is also sprayed on the bottom of the blackboard eraser 6 by means of the bottom spray head 41 .
  • the water sprayed from the bottom nozzle 41 can penetrate upwards into the bottom of the blackboard eraser 6 through the through hole 21 to improve the water absorption efficiency of the blackboard eraser 6 .
  • a drain pipe 5 is arranged at the bottom of the cleaning box 1, and the drain pipe 5 can discharge the sewage containing dust from the collection chamber 11, so that the cleaning operation able to continue.
  • the blackboard with eraser cleaning function includes blackboard body 7, water collection box 8, water filter box 2, water spray part 9, auxiliary nozzle 10 and extruding part 15, and one side of blackboard body 7 is provided with installation part 71, installs
  • the part 71 is provided with an installation chamber 72 with an opening outward;
  • the water collection box 8 is arranged at the bottom of the installation chamber 72;
  • the water spray part 9 is arranged at the bottom of the water collection box 8, and is located below the water filter box 2, and is used to spray water to the eraser 6;
  • the auxiliary nozzle 10 is arranged above the water filter box 2, It is used to spray the peripheral wall of the eraser 6;
  • the extruding part 15 is arranged on the top of the installation cavity 72, and is used to press the eraser 6 down.
  • the installation part 71 on the side of the blackboard body 7 is provided with an installation cavity 72, and the water collection box 8 and the water filter box 2 are arranged in the installation cavity 72.
  • spray the peripheral wall of the blackboard eraser 6 through the auxiliary nozzle 10 above the water filter box 2 and spray clean water to the bottom of the blackboard eraser 6 through the water spray part 9 below the water filter box 2, and the sponge at the bottom of the blackboard eraser 6 absorbs the clean water and squeezes it out.
  • the dust in the blackboard eraser 6 is discharged by using water, and the sewage falls into the water collection box 8 through the filter hole 203 of the water filter box 2, which improves the cleaning efficiency of the blackboard eraser 6 and ensures the cleanliness of the blackboard eraser 6.
  • the mounting part 71 is located on the side of the blackboard body 7, which is convenient for writers to clean the blackboard eraser 6 according to the use of the blackboard eraser 6, and realizes the fast switching between the cleaning state and the use state of the blackboard eraser 6, which has good usability.
  • the above-mentioned characteristic water spraying member 9 adopts the structures shown in FIG. 6 and FIG. 9 .
  • the water spray member 9 includes a water supply pipe 91 and a nozzle 92 communicated with the water supply pipe 91, and the water supply pipe 91 is arranged through the side wall of the water collection box 8;
  • the holes 203 correspond up and down.
  • the water spray member 9 is used for spraying clean water on the blackboard eraser 6 from the bottom of the water filter box 2 to clean the blackboard eraser 6 .
  • the water supply pipe 91 Utilize the water supply pipe 91 to supply clean water into the nozzle 92, the water supply pipe 91 is provided with a valve, and its water supply can be controlled.
  • the end of the water supply pipe 91 runs through the side wall of the installation chamber 72 and the side wall of the water collection box 8 to extend to the bottom surface of the water filter box 2, and the water spray port of the nozzle 92 is arranged upwards, and corresponds to the filter hole 203 up and down, so that the water flows freely.
  • the size of the filter hole 203 is appropriately increased to ensure that the upwardly sprayed clean water and downwardly flowing sewage can flow in an orderly manner according to the required direction, so as to avoid the problem that the water passing area is too small to cause insufficient spraying or unsmooth sewage discharge problem, effectively improving the cleaning efficiency of the blackboard eraser 6.
  • the above-mentioned characteristic water filter box 2 adopts the structures shown in FIG. 7 and FIG. 8 .
  • the upper edge of the water filter box 2 is provided with a hooking part 201 which is bent outwards to hang on the upper edge of the water collection box 8, and the water collection box 8 is provided with an upward extension to be supported on
  • the force-bearing column 81 on the bottom surface of the water filter box 2 has an extended portion 82 extending outward on the upper end of the force-bearing column 81 , and the top surface of the expanded portion 82 is attached to the bottom surface of the water filter box 2 .
  • the water filter box 2 is arranged in the water collection box 8, and there is a certain distance between the outer bottom surface of the water filter box 2 and the inner bottom surface of the water collection box 8, and this space is used to accommodate the sewage flowing down from the upper water filter box 2.
  • a hooking portion 201 is provided on the upper edge of the water filter box 2 , and the hooking portion 201 extends toward the outer circumference, and the water filter box 2 is hung on the upper edge of the water collection box 8 by means of the hooking portion 201 .
  • the bottom of the water collection box 8 is also provided with a force bearing column 81 .
  • the cross-sectional area of the extension part 82 at the upper end of the force-bearing column 81 gradually increases from bottom to top, and the large-area top surface of the upper part can contact the water filter box 2 in a large area to realize effective support for the water filter box 2 .
  • the water filter box 2 can keep its position stable in the water collection box 8 by means of the combined effect of the articulated part 201 and the lower force-bearing column 81. There will be no excessive deformation, and it has a good supporting capacity for the blackboard eraser 6 .
  • the above-mentioned characteristic extrusion part 15 adopts the structures shown in FIG. 6 and FIG. 9 .
  • the extruded part 15 includes a lifting arm 151 and an extruding plate 152, the fixed end of the elevating arm 151 is connected to the inner top surface of the installation cavity 72; the extruding plate 152 is connected to the telescopic end of the elevating arm 151 , for abutting against the top surface of the blackboard eraser 6 to squeeze the blackboard eraser 6.
  • the extruding part 15 is used to press the eraser 6 downward, so that the sponge of the eraser 6 is compressed, and then the dust in the sponge is taken out by water.
  • the lifting arm 151 has a telescopic end, and the telescopic end can drive the extruding plate 152 to move down under the telescopic action of the lifting arm 151, and squeeze the top surface of the eraser 6 to realize the extruding effect on the eraser 6, so that the water inside the sponge can be carried
  • the dust forms sewage, and flows into the water collection box 8 through the filter hole 203 of the water filter box 2 .
  • the lifting arm 151 can use a hydraulic cylinder, a lead screw, or a rack and pinion assembly to carry out the lifting action.
  • the telescopic drive of the lifting arm 151 can reduce the labor intensity of manual extrusion, ensure the strength and frequency of the extrusion action, and realize the sponge interior. Effective discharge of sewage. Compared with the traditional way of immersing the eraser 6 in the same container for multiple times to absorb water and squeeze it, the above cleaning method can effectively improve the cleanliness of cleaning and avoid the problem of incomplete cleaning.
  • the characteristic extrusion plate 152 may adopt the structure shown in FIG. 7 and FIG. 9 .
  • a downwardly protruding limiting ring 153 is provided on the bottom surface of the extruding plate 152 , and the limiting ring 153 is used to surround the top outer periphery of the eraser 6 to limit the eraser 6 .
  • a downwardly protruding limiting ring 153 is also provided on the pressing plate 152 for limiting the peripheral edge of the top of the eraser 6 .
  • the extruding plate 152 presses the eraser 6 under the drive of the lifting arm 151, the eraser 6 is limited in the limit ring 153, and is stably at the same horizontal position, so as to prevent the points on the top surface of the eraser 6 from being affected by the extruding plate 152.
  • the uneven pressure effect will produce horizontal displacement, ensure that the bottom surface of the extruding plate 152 is in full contact with the top surface of the eraser 6, realize the comprehensive extrusion of the sponge part, effectively improve the uniformity of the extrusion load, and ensure the bottom of the eraser 6
  • the sponge is fully and effectively cleaned, which improves the cleanliness of the cleaning and ensures the subsequent normal use of the eraser 6.
  • the longitudinal section of the stop ring 153 is a right-angle trapezoid, wherein the hypotenuse of the right-angle trapezoid is arranged near the inner side of the stop ring 153, and when the extruding plate 152 moves down, the blackboard eraser 6 can be guided to the middle part of the stop ring 153 to ensure The position-limiting effect of the limit ring 153 on the blackboard eraser 6 ensures the stability of the relative positions of the components during the cleaning process of the blackboard eraser 6 .
  • the feature installation part 71 adopts a structure as shown in FIG. 5 .
  • the opening and closing door 16 for blocking the opening of the installation cavity 72 is also hinged on the installation part 71, and a locking assembly is also provided between the side of the opening and closing door 16 away from the hinge point and the installation part 71, and the locking assembly includes The locking seat 132 and the locking bar 131, the locking seat 132 is arranged on the installation part 71, and has a snap-in groove that penetrates up and down; one end of the locking bar 131 is rotatably connected to the opening and closing door 16, and can swing in the vertical plane, The other end is provided with a locking pin suitable for locking in the locking groove.
  • the opening and closing door 16 on the installation part 71 is used to block the front side opening of the installation cavity 72, and the opening and closing door 16 is rotatably connected on the front side of the installation part 71, which can realize opening and closing conveniently.
  • the locking assembly can keep the opening and closing door 16 in a closed state.
  • the opening and closing door 16 is in the closed state.
  • the locking bar 131 can be rotated to the position where the locking pin and the locking groove are engaged with each other, and the distance between the locking seat 132 and the locking bar 131 is maintained. The stability of the relative position between them.
  • charts such as curriculum or class schedule can be pasted on the opening and closing door 16, which can realize effective use of space and improve the overall aesthetics and practicality of the blackboard.
  • the locking bar 131 can swing freely in the vertical plane, so as to change the position of the locking pin so that it enters into the locking groove or escapes from the locking groove.
  • the locking bar 131 is rotated so that the locking pin at the end thereof can be locked in the locking slot of the locking seat 132 to ensure that the opening and closing door 16 is in a closed state.
  • the characteristic filter hole 203 adopts a structure as shown in FIG. 8 .
  • several filter holes 203 are respectively provided on the bottom wall and the surrounding wall of the filter box 2 , and the filter holes 203 are oblong holes.
  • the filter holes 203 are arranged in the form of oblong holes. Compared with circular filter holes, it can effectively increase the drainage area and ensure the rapid discharge of sewage.
  • the above characteristic water filter box 2 may adopt the structure shown in FIG. 8 .
  • the inner bottom surface of the filter box 2 is provided with criss-cross reinforcing ribs 202 .
  • the inner bottom surface of the water filter box 2 is provided with reinforcing ribs 202 that can enhance the structural strength of the bottom of the water filter box 2, so as to avoid damage to the water filter box 2 when the eraser 6 is squeezed and the force is transmitted to the water filter box 2.
  • the reinforcing ribs 202 are arranged in a criss-cross pattern, so that there are filter holes 203 in the area surrounded by the reinforcing ribs 202 in the vertical and horizontal directions, that is, the filter holes 203 are not blocked by the reinforcing ribs 202 to ensure the effective discharge of sewage.
  • the above characteristic water filter box 2 can adopt the structure shown in Fig. 8 and Fig. 9 .
  • a drainage groove 204 is also provided on the bottom surface of the water filter box 2, and the drainage groove 204 is arranged close to the peripheral wall of the water filter box 2, and a filter hole 203 is also arranged in the drainage groove 204, and the reinforcing rib 202 is located in the row.
  • the inner ring of the sink 204 is also provided on the bottom surface of the water filter box 2
  • the drainage groove 204 is arranged close to the peripheral wall of the water filter box 2
  • a filter hole 203 is also arranged in the drainage groove 204, and the reinforcing rib 202 is located in the row.
  • a downwardly recessed drainage groove 204 is provided, which can realize the effective collection of sewage, avoid sewage from being extruded from the sponge and cause sewage to be re-absorbed in time, and ensure that the eraser 6 Cleanliness of cleaning.
  • filter holes 203 are also provided on the peripheral wall of the water filter box 2, and the filter holes 203 on the peripheral wall are arranged close to the drainage groove 204, which can further increase the drainage rate.
  • reinforcing ribs 202 perpendicular to the direction of the filter hole 203 can also be provided to enhance the structural strength of the water filter box 2 .
  • the peripheral wall of the scrubber 6 is sprayed with the auxiliary spray head 10 above the water filter box 2 .
  • auxiliary nozzles 10 There are several auxiliary nozzles 10, all set towards the center of the water filter box 2, and the auxiliary nozzles 10 are inclined to the side near the eraser 6 from top to bottom.
  • the auxiliary nozzle 10 above the water filter box 2 is used to spray the outer periphery of the wiping part of the blackboard eraser 6.
  • the auxiliary nozzle 10 is inclined downward from the outside to the inside, so that the outer periphery of the blackboard eraser 6, especially the lower part of the wiping part, can be concentrated Spray brushing to form a good flushing effect, combined with the extrusion effect of the extrusion part 15, the sponge at the bottom of the eraser 6 can be better cleaned, avoiding the problem of incomplete cleaning caused by insufficient water supply of the water spray part 9, and improving the cleanliness .

Abstract

一种板擦清洗设备包括：开口向上设置的清洗箱（1）；设于清洗箱内用于承托板擦（6）的滤水盒（2），滤水盒的底部设有贯通孔（21），滤水盒与清洗箱之间形成位于滤水盒下方的收集腔（11）；设于滤水盒上方用于下压板擦以挤出污水的挤压组件（3），挤压组件具有能够上下移动以挤压板擦的下压臂（31）；设于滤水盒上方用于向板擦的外周壁喷水的喷淋件（4）；以及设于滤水盒下方且开口向上用于喷淋板擦的底喷头（41）。还公开了带有板擦清洗功能的黑板。该板擦清洗设备可避免板擦再次吸附清洗后的污水，提高了板擦的洁净度。

Description

板擦清洗设备及带有板擦清洗功能的黑板
本专利申请要求于2021年10月22日提交的中国专利申请No.CN202111234099.8和No.CN202111235648.3的优先权。在先申请的公开内容通过整体引用并入本申请。
技术领域
本申请属于教具清洗技术领域，更具体地说，涉及一种板擦清洗设备及带有板擦清洗功能的黑板。
 背景技术
黑板和板擦是教师等人群常用的教学工具。粉笔书写后，需要板擦将字迹清除干净，方便后续的书写。现有的板擦大多设有吸水效果极佳的海绵，擦拭下来的粉尘会聚集在海绵内，影响后续字体的擦除。因此要经常对板擦进行清洗，以便能够擦净黑板。
目前的现有技术中，板擦使用一段时间后，使用人员一般在容器中装水，并在容器内高于液面的位置设置托板。清洗时，先将板擦浸泡在水中，使板擦内吸附一定量水后，再将板擦转移至托板上，用手按压多次，使板擦内含有粉尘的污水排放至容器中，达到清洗板擦的目的。上述装置在使用时费时费力，不仅容易污染手部，还容易造成污水的外溢，对板擦的清洗效果也较差，影响了擦黑板的洁净度。
 技术问题
本申请的目的在于提供一种板擦清洗设备及带有板擦清洗功能的黑板，能够方便地进行板擦的清洗，保证了清洗的洁净度，提高了清洗效率以及擦黑板的便利性。
 技术解决方案
本申请采用的技术方案是：第一方面，本申请提供一种板擦清洗设备，包括：
清洗箱，开口向上设置；
滤水盒，设置于清洗箱内，用于承托板擦，滤水盒的底部设有贯通孔，滤水盒与清洗箱之间形成位于滤水盒下部的收集腔；
挤压组件，设置于滤水盒的上方，用于下压板擦以挤出污水，挤压组件具有能够上下移动以挤压板擦的下压臂；
喷淋件，设置于滤水盒的上方，用于向板擦的外周壁上喷水；以及
底喷头，设置于滤水盒的下方，底喷头的开口向上，用于喷淋板擦。
一些实施例中，滤水盒的内底壁上设有向上凸起以增大与板擦的接触面积的挤压凸起，挤压凸起能够配合挤压组件挤压板擦。
一些实施例中，贯通孔设有若干个，且若干个贯通孔为长轴相互平行设置的长圆孔，挤压凸起为条形凸起，挤压凸起的延伸方向垂直于长圆孔的长轴方向设置，且挤压凸起跨设于贯通孔的上方。
在一种可能的实现方式中，滤水盒的上边缘设有向外下方折弯的挂檐，挂檐用于挂设于清洗箱的上缘。
在一种可能的实现方式中，清洗箱的内底面上设有若干个向上延伸、并用于承托滤水盒的承托柱，承托柱的上端设有倒锥形的锥形台。
一些实施例中，清洗箱的内侧壁上还设有向内凸起以承托滤水盒的底面外缘的限位台，限位台的顶面与锥形台的顶面齐平。
一些实施例中，滤水盒的中部设有向上凸起以承托板擦的承托台，贯通孔设置于承托台上，承托台的外周与滤水盒的内壁之间形成导流凹槽，导流凹槽上设有上下贯通的导水孔。
一些实施例中，承托台的边缘还设有向上凸起以限位板擦的限位圈，在垂直于限位圈走向的方向上，限位圈的纵向截面为等腰三角形。
一些实施例中，限位圈上间隔设有若干个用于向外导送污水的出水槽，出水槽与导水孔内外对应。
在一种可能的实现方式中，清洗箱的底部还设有排水管，底喷头与贯通孔上下对应。
一些实施例中，下压臂的下端设有压座，压座的底面具有与板擦的顶面一致的弧度，压座的底面设有垫片，用于与板擦接触以挤压板擦。
与上述第一方面提供的板擦清洗设备属于一个总的发明构思，第二方面，本申请提供一种带有板擦清洗功能的黑板，包括：
黑板本体，一侧设有安装部，安装部上设有开口向外的安装腔；
集水盒，设置于安装腔的底部；
滤水盒，设置于集水盒内，且用于承托板擦，滤水盒上设有上下贯通的滤孔；
喷水件，设置于集水盒的底部，且位于滤水盒下方，用于向板擦喷水；
挤压件，设置于安装腔的顶部，用于下压板擦以挤出污水；以及
副喷头，设置于滤水盒的上方，用于喷淋板擦的周壁。
在一种可能的实现方式中，喷水件包括：
供水管，贯穿集水盒的侧壁设置；
喷头，喷头的喷水口向上设置，且与滤孔上下对应。
在一种可能的实现方式中，滤水盒的上边缘设有向外折弯以挂设于集水盒的上边缘的挂接部，集水盒内设有向上延伸以承托于滤水盒的底面的受力柱，受力柱的上端设有向外周延伸的扩展部，扩展部的顶面贴合于滤水盒的底面。
一些实施例中，挤压件包括：
升降臂，升降臂的固定端连接于安装腔的内顶面上，升降臂的伸缩端向下延伸；
挤压板，连接于升降臂的伸缩端，用于与板擦的顶面抵接以挤压板擦。
一些实施例中，挤压板的底面上设有向下凸起的限位环，限位环用于环设于板擦的顶部外周以限位板擦。
在一种可能的实现方式中，安装部上还铰接有用于封堵安装腔的开口的启闭门，启闭门远离铰接点的一侧与安装部之间还设有锁定组件，锁定组件包括：
锁定座，设置于安装部上，且具有上下贯穿的卡接槽；
锁定条，一端转动连接于启闭门上、并能够在竖向平面内摆动，另一端设有适于卡接于卡接槽内的卡接销。
在一种可能的实现方式中，滤孔在滤水盒的底壁和周壁上分别设有若干个，滤孔为长圆孔。
一些实施例中，滤水盒的内底面上设有纵横交错的加强筋。
一些实施例中，滤水盒的底面上还设有排水槽，排水槽靠近滤水盒的周壁设置，且排水槽内也设有滤孔，加强筋位于排水槽的内圈。
在一种可能的实现方式中，副喷头设有若干个，均朝向滤水盒的中心设置，副喷头自上而下向靠近板擦的一侧倾斜设置。
 有益效果
与现有技术相比，本申请实施例所示的板擦清洗设备，利用喷淋件向板擦的外周喷水，板擦将水吸附至内部，挤压组件对板擦进行挤压，使板擦内吸附的水排出，同时将粉尘带出，污水经滤水盒的贯通孔流至下方的收集腔内，在利用喷淋件对板擦的外周部位进行喷淋的同时，还借助底喷头对板擦的底部喷水，提高板擦的吸水效率。该设备便于进行板擦的清洗，可利用洁净的水进行板擦清洗，利用污水带出板擦中的粉尘，保证板擦的洁净度，避免板擦对清洗后污水的再次吸附，保证了板擦清洗的洁净度，提高了清洗效率。
与现有技术相比，本申请实施例所示的带有板擦清洗功能的黑板，黑板本体侧部的安装部上设有安装腔，集水盒与滤水盒设置在安装腔内，通过滤水盒上方的副喷头喷淋板擦的周壁，通过滤水盒下方的喷水件向板擦底部喷射清洁水，板擦在挤压件的挤压作用下，利用水将板擦内的粉尘排出，污水经滤水盒的滤孔落至集水盒内，提高了板擦的清洗效率，保证了板擦的清洗质量，安装部位于黑板本体的侧部，便于进行板擦的清洗和使用状态的快速切换，具有良好的使用便利性。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的板擦清洗设备实施例一的局部剖视结构示意图；
图2为本申请实施例图1去掉挤压组件和板擦后的剖视结构示意图；
图3为本申请实施例提供的板擦清洗设备实施例二的剖视结构示意图（去除挤压组件）；
图4为本申请实施例提供的滤水盒的再一个实施例的俯视结构示意图；
图5为本申请实施例提供的带有板擦清洗功能的黑板的结构示意图；
图6为本申请实施例图5去掉启闭门后的局部放大结构示意图；
图7为本申请实施例图6中Ⅰ的局部放大结构示意图；
图8为本申请实施例图6中滤水盒的俯视结构示意图；
图9为本申请实施例图6中A-A的局部剖视结构示意图。
其中，图中各附图标记：
1、清洗箱；11、收集腔；12、承托柱；13、锥形台；14、限位台；2、滤水盒；21、贯通孔；22、挤压凸起；23、挂檐；24、承托台；25、限位圈；26、导流凹槽；27、导水孔；28、出水槽；201、挂接部；202、加强筋；203、滤孔；204、排水槽；3、挤压组件；31、下压臂；32、压座；33、垫片；4、喷淋件；41、底喷头；5、排水管；6、板擦；7、黑板本体；71、安装部；72、安装腔；8、集水盒；81、受力柱；82、扩展部；9、喷水件；91、供水管；92、喷头；10、副喷头；15、挤压件；151、升降臂；152、挤压板；153、限位环；16、启闭门；131、锁定条；132、锁定座。
本申请的实施方式
为了使本申请所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
需要说明的是，当元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者间接在另一个元件上。需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者若干个该特征。在本申请的描述中，“若干个”的含义是两个或两个以上，除非另有明确具体的限定。
请一并参阅图1至图4，现对本申请提供的板擦清洗设备进行说明。板擦清洗设备，包括清洗箱1、滤水盒2、挤压组件3、喷淋件4以及底喷头41，清洗箱1开口向上设置；滤水盒2设置于清洗箱1内，用于承托板擦6，滤水盒2的底部设有贯通孔21，滤水盒2与清洗箱1之间形成位于滤水盒2下部的收集腔11；挤压组件3设置于滤水盒2的上方，用于下压板擦6以挤出污水，挤压组件3具有能够上下移动以挤压板擦6的下压臂31；喷淋件4设置于滤水盒2的上方，用于向板擦6的外周壁上喷水；底喷头41设置于滤水盒2的下方，底喷头41的开口向上，用于喷淋板擦6。
与现有技术相比，本实施例提供的板擦清洗设备，利用喷淋件4向板擦6的外周喷水，板擦6将水吸附至内部，挤压组件3对板擦6进行挤压，使板擦6内吸附的水排出，同时将粉尘带出，污水经滤水盒2的贯通孔21流至下方的收集腔11内，在利用喷淋件4对板擦6的外周部位进行喷淋的同时，还借助底喷头41对板擦6的底部喷水，提高板擦6的吸水效率。该设备便于进行板擦6的清洗，可利用洁净的水进行板擦6清洗，通过挤压组件3的下压作用排出粉尘，保证板擦6的洁净度，避免板擦6对清洗后污水的再次吸附，保证清洗的彻底性，提高了板擦6的清洁度。
在一些实施例中，上述特征滤水盒2可以采用如图4所示结构。参见图4，滤水盒2的内底壁上设有向上凸起以增大与板擦6的接触面积的挤压凸起22，挤压凸起22能够配合挤压组件3挤压板擦6。
在滤水盒2的内底壁上设置有挤压凸起22，挤压凸起22能够增大与板擦6底部的接触面积。在挤压组件3的挤压作用下，可快速的将板擦6内部的水分挤出，利用污水将粉尘带出板擦6并送入收集腔11内，挤压凸起22增大了与板擦6之间的接触面积，提高了挤压组件3的挤压效果，有效地提高了挤压效率，保证了板擦6清洗的洁净度。
在一些实施例中，上述特征贯通孔21可以采用如图4所示结构。参见图4，贯通孔21设有若干个，且若干个贯通孔21为长轴相互平行设置的长圆孔，挤压凸起22为条形凸起，挤压凸起22的延伸方向垂直于长圆孔的长轴方向设置，且挤压凸起22跨设于贯通孔21的上方。
滤水盒2内设有多个贯通孔21，以便将板擦6内挤出的水分输送至收集腔11内，避免板擦6内挤出的污水在滤水盒2内积聚，进而影响板擦6后续的清洗效果。具体的，贯通孔21为长圆孔，由于长圆孔具有更大的过水面积，能将污水快速地向收集腔11内导送。
挤压凸起22采用条形凸起的结构形式，该结构有助于增大滤水盒2的结构强度，避免滤水盒2上设置贯通孔21造成的滤水盒2强度衰减，使滤水盒2能够有效的承托板擦6，并承受挤压组件3的下压力，便于板擦6的清洗过程顺利进行。
具体的，挤压凸起22跨设在贯通孔21的上方，并不影响贯通孔21的过水面积，同时还能增大滤水盒2的结构强度。
进一步的，挤压凸起22的延伸方向垂直于贯通孔21的长轴方向，一方面能最大限度的避免对贯通孔21形成封堵，另一方面还能够避免由于设置贯通孔21造成的强度衰减，挤压凸起22可以将贯通孔21两侧的区域有效衔接，挤压凸起22与相邻两个贯通孔21之间的实体区域形成纵横交错的格栅结构，提高了滤水盒2的结构强度，便于抵抗挤压组件3挤压过程中对滤水盒2施加的下压力，保证了滤水盒2结构的稳定性，延长了设备的使用寿命。
一些可能的实现方式中，上述特征滤水盒2采用如图2和图3所示结构。参见图2和图3，滤水盒2的上边缘设有向外下方折弯的挂檐23，挂檐23用于挂设于清洗箱1的上缘。
滤水盒2与清洗箱1之间可采用固定连接的形式，也可以采用可拆卸连接的形式。当滤水盒2与清洗箱1之间采用可拆卸连接的形式时，可利用卡接、螺纹连接或插接等多种不同的连接方式进行连接，在此不做具体限定。
具体的，在滤水盒2的上边缘设置有挂檐23，挂檐23连接在滤水盒2的边缘位置，向滤水盒2的外周延伸后再向下折弯。挂檐23形成开口向下的容置空间，清洗箱1的上缘可伸入上述容置空间中，借助挂檐23将滤水盒2挂在清洗箱1上，使滤水盒2的底面与清洗箱1的内底面之间具有一定空间，形成能够储存污水的收集腔11。滤水盒2可方便地从清洗箱1上拆除，便于后续清洗箱1的清洁处理。
一些可能的实现方式中，参见图2，清洗箱1的内底面上设有若干个向上延伸、并用于承托滤水盒2的承托柱12，承托柱12的上端设有倒锥形的锥形台13。
由于挤压组件3在下压过程中，滤水盒2会受到较大的下压力。挤压凸起22的设置能够保证滤水盒2的结构稳定性，还需要借助设置在清洗箱1的内底面上的承托柱12，保证滤水盒2与清洗箱1之间相对位置的稳定性。
当挤压组件3挤压滤水盒2时，滤水盒2底部能够抵接顶紧在承托柱12的顶部，承托柱12提供可靠的承托力，避免滤水盒2所受压力过大造成的结构损坏。
在此基础上，为了增大对滤水盒2的承托面积，在承托柱12的上端设置了锥形台13。锥形台13的大直径一端向上设置，能够对滤水盒2进行可靠的承托，有效地抵抗挤压组件3的下压力，保证下压臂31对板擦6大的挤压作用，使板擦6内的污水能够快速及时的排出。
具体的，如图1所示，为了避免下压臂31下压板擦6时压力过大造成板擦6局部位置的损坏，在下压臂31的下端设置了压座32，压座32的底面具有与板擦6的顶面一致的弧度，能够实现对板擦6顶面较大面积的贴合。
进一步的，压座32的底面上还设置了垫片33，垫片33为橡胶或硅胶等材质制作而成的柔性构件，能够与板擦6之间形成柔性接触，实现下压力在板擦6上的均匀分布，保证板擦6下部各点位均能得到有效挤压，提高了污水的排出速度。
在一些实施例中，上述特征清洗箱1可以采用如图2所示结构。参见图2，清洗箱1的内侧壁上还设有向内凸起以承托滤水盒2的底面外缘的限位台14，限位台14的顶面与锥形台13的顶面（即锥形台13小直径的端面）齐平。
下压臂31在利用下方的压座32和垫片33对板擦6进行挤压清洗的过程中，会使滤水盒2的边缘对清洗箱1的上缘形成较大的下压力，为了避免挂檐23所受压力过大造成的损坏，在清洗箱1的内侧壁上还设置有限位台14，限位台14向收集腔11的中心处凸起，借助限位台14的顶面实现对滤水盒2底面外周边缘位置的有效承托。
限位台14在滤水盒2的内侧壁上沿周向延伸，形成封闭环，可以对滤水盒2的底部四周边缘起到均匀的承托作用，保证滤水盒2的受力均衡，保证板擦6的挤压清洗效果，提高了清洗质量。
在一些实施例中，上述特征滤水盒2可以采用如图1-图3所示结构。滤水盒2的中部设有向上凸起以承托板擦6的承托台24，贯通孔21设置于承托台24上，承托台24的外周与滤水盒2的内壁之间形成导流凹槽26，导流凹槽26上设有上下贯通的导水孔27。
在对板擦6进行挤压的过程中，为了使挤出的污水能够顺畅的排放至下部的收集腔11内，在滤水盒2的中部设置有承托台24，承托台24用于承托板擦6，使板擦6的底部高于导流凹槽26的底部，利用导流凹槽26将板擦6外周溢出的污水导送至收集腔11内。
同时，板擦6底面上排出的污水则通过承托台24上的贯通孔21流至收集腔11内，实现了污水的分区域导流，便于提高污水的排放效率，避免污水排出速度慢造成积聚，影响板擦6的清洗效率。
进一步的，导水孔27也为长圆孔，且沿导流凹槽26的走向延伸一定长度，便于提高污水的排放速度。
在一些实施例中，上述特征承托台24可以采用如图3所示结构。参见图3，承托台24的边缘还设有向上凸起以限位板擦6的限位圈25，在垂直于限位圈25走向的方向上，限位圈25的纵向截面为等腰三角形。
由于板擦6内各位置存在水分含量不同、出水速度不均的问题，所以在板擦6受到下压臂31的下压作用时，容易导致挤压过程中板擦6位置的错动，上述位置的错动不仅不利于板擦6内污水的均匀排出，且容易造成滤水盒2或清洗箱1等构件的损坏。
针对上述问题，在承托台24的外周边缘还设置了限位圈25，限位圈25用于套设在板擦6的外周，可对板擦6的平面位置进行限定。限位圈25的纵截面为三角形，一方面可减少材料用量，降低构件成本，另一方面，限位圈25的内侧面可对板擦6的放入方向进行导向，使其顺利进入限位圈25内，提高了放置效率，且能借助限位圈25的内侧面底部对板擦6形成可靠限位，避免因直接将限位圈25内部尺寸设置成与板擦6尺寸一致而造成的板擦6取出困难的问题。
在一些实施例中，上述特征限位圈25可以采用如图4所示结构。参见图4，限位圈25上间隔设有若干个用于向外导送污水的出水槽28，出水槽28与导水孔27内外对应。
限位圈25在对板擦6进行位置限定的同时，为了避免限位圈25影响板擦6内的污水向外周排出，在限位圈25上设置了多个出水槽28，出水槽28与导水孔27内外对应，便于污水的快速排出，缩短了污水在导流凹槽26中留存时间，保证板擦6内的污水集中排放至收集腔11内，提高板擦6的清洗效率。
一些可能的实现方式中，上述特征清洗箱1采用如图1和图2所示结构。参见图1和图2，清洗箱1的底部还设有排水管5，底喷头41与贯通孔21上下对应。
在滤水盒2的下方设置有底喷头41，在利用喷淋件4对板擦6的外周部位进行喷淋的同时，还借助底喷头41对板擦6的底部喷水。底喷头41中喷出的水可通过贯通孔21向上渗入板擦6的底部，提高板擦6的吸水效率。
为了便于清洗箱1内污水的及时排出，实现不同板擦6的连续清洗，在清洗箱1的底部设置有排水管5，排水管5能将含有粉尘的污水从收集腔11内排出，使清洗操作能够持续进行。
请一并参阅图5至图9，现对本申请提供的带有板擦清洗功能的黑板进行说明。带有板擦清洗功能的黑板，包括黑板本体7、集水盒8、滤水盒2、喷水件9、副喷头10以及挤压件15，黑板本体7的一侧设有安装部71，安装部71上设有开口向外的安装腔72；集水盒8设置于安装腔72的底部；滤水盒2设置于集水盒8内，且用于承托板擦6，滤水盒2上设有上下贯通的滤孔203；喷水件9设置于集水盒8的底部，且位于滤水盒2下方，用于向板擦6喷水；副喷头10设置于滤水盒2的上方，用于喷淋板擦6的周壁；挤压件15设置于安装腔72的顶部，用于下压板擦6。
与现有技术相比，本实施例提供的带有板擦清洗功能的黑板，黑板本体7侧部的安装部71上设有安装腔72，集水盒8与滤水盒2设置在安装腔72内，通过滤水盒2上方的副喷头10喷淋板擦6的周壁，通过滤水盒2下方的喷水件9向板擦6底部喷射清洁水，板擦6底部的海绵吸收清洁水，并在挤压件15的挤压作用下，利用水将板擦6内的粉尘排出，污水经滤水盒2的滤孔203落至集水盒8内，提高了板擦6的清洗效率，保证了板擦6的清洗质量，安装部71位于黑板本体7的侧部，便于书写人员根据板擦6的使用情况对板擦6进行清洗操作，实现板擦6清洗状态和使用状态的快速切换，具有良好的使用便利性。
一些可能的实现方式中，上述特征喷水件9采用如图6和图9所示结构。参见图6和图9，喷水件9包括供水管91以及与供水管91连通的喷头92，供水管91贯穿集水盒8的侧壁设置；喷头92的喷水口向上设置，且与滤孔203上下对应。
喷水件9用于从滤水盒2的下方向板擦6上喷淋清洁水，以实现板擦6的清洗。利用供水管91向喷头92内供入清洁水，供水管91上设有阀门，可对其供水进行控制。供水管91的端部贯穿安装腔72的侧壁和集水盒8的侧壁向滤水盒2的底面延伸，喷头92的喷水口向上设置，且与滤孔203上下对应，便于水自下而上喷入板擦6的底部，使板擦6底部的海绵内能吸附较多的水，在挤压件15的挤压作用下，水可以携带板擦6内的粉尘形成污水，污水从滤孔203内流至集水盒8内。
具体的，将滤孔203尺寸适当加大，保证向上喷射的清洁水和向下流动的污水均能按照所需方向有序流动，避免过水面积太小造成喷射不到位或者污水排放不流畅的问题，有效的提高了板擦6的清洗效率。
一些可能的实现方式中，上述特征滤水盒2采用如图7和图8所示结构。参见图7和图8，滤水盒2的上边缘设有向外折弯以挂设于集水盒8的上边缘的挂接部201，集水盒8内设有向上延伸以承托于滤水盒2的底面的受力柱81，受力柱81的上端设有向外周延伸的扩展部82，扩展部82的顶面贴合于滤水盒2的底面上。
滤水盒2设置在集水盒8内，滤水盒2的外底面与集水盒8的内底面之间具有一定的间距，该空间用于容纳上方滤水盒2中流下的污水。在滤水盒2的上边缘设置了挂接部201，挂接部201向外周方向延伸，滤水盒2借助挂接部201挂在集水盒8的上边缘。
在利用挂接部201对滤水盒2进行安装的基础上，集水盒8的底部还设置有受力柱81。受力柱81上端的扩展部82的截面积自下而上逐渐变大，可通过上部面积较大的顶面与滤水盒2进行大面积的接触，实现对滤水盒2的有效承托。
滤水盒2借助挂接部201以及下部受力柱81的综合作用，能够保持其在集水盒8内位置的稳定，即使板擦6受到挤压件15的挤压作用，集水盒8也不会产生过大变形，对板擦6具有良好的承托能力。
一些可能的实现方式中，上述特征挤压件15采用如图6和图9所示结构。参见图6和图9，挤压件15包括升降臂151以及挤压板152，升降臂151的固定端连接于安装腔72的内顶面上；挤压板152连接于升降臂151的伸缩端，用于与板擦6的顶面抵接以挤压板擦6。
挤压件15用于向下挤压板擦6，以使板擦6的海绵受压压缩，进而利用水将海绵内的粉尘带出。升降臂151具有伸缩端，伸缩端在升降臂151的伸缩作用下能够带动挤压板152下移，并挤压板擦6的顶面，实现对板擦6的挤压作用，使海绵内部的水携带粉尘形成污水，并经滤水盒2的滤孔203流入集水盒8内。
具体的，升降臂151可以采用液压缸、丝杠或齿轮齿条组件进行升降动作，升降臂151的伸缩带动可以降低人工挤压的劳动强度，保证了挤压动作的力度和频率，实现海绵内部污水的有效排放。上述清洗方式，相对于传统的将板擦6多次浸入同一容器中吸水并挤压的方式，可有效提高清洗的洁净度，避免了清洗不彻底的问题。
在一些实施例中，上述特征挤压板152可以采用如图7和图9所示结构。参见图7和图9，挤压板152的底面上设有向下凸起的限位环153，限位环153用于环设于板擦6的顶部外周以限位板擦6。
挤压板152上还设置了向下凸起的限位环153，用于对板擦6顶部的四周边缘进行限位。当挤压板152在升降臂151的带动下下压板擦6时，板擦6被限位在限位环153内，稳定的处于同一水平位置，避免板擦6顶面各点位受到挤压板152的压力作用不均产生水平位移，保证挤压板152的底面与板擦6的顶面充分接触，实现对海绵部位的全面挤压，有效的提高了挤压荷载的均布性，保证板擦6底部的海绵得到充分有效的清洗，提高了清洗的洁净度，保证板擦6后续的正常使用。
限位环153的纵向截面为直角梯形，其中直角梯形的斜边靠近限位环153的内侧设置，在挤压板152下移时，可将板擦6导送至限位环153的中部，保证限位环153对板擦6的限位作用，保证板擦6清洗过程中构件相对位置的稳定。
一些可能的实现方式中，上述特征安装部71采用如图5所示结构。参见图5，安装部71上还铰接有用于封堵安装腔72的开口的启闭门16，启闭门16远离铰接点的一侧与安装部71之间还设有锁定组件，锁定组件包括锁定座132以及锁定条131，锁定座132设置于安装部71上，且具有上下贯穿的卡接槽；锁定条131的一端转动连接于启闭门16上、并能够在竖向平面内摆动，另一端设有适于卡接于卡接槽内的卡接销。
安装部71上的启闭门16用于封堵安装腔72的前侧开口，启闭门16转动连接在安装部71的前侧面上，可方便的实现打开和关闭。锁定组件可使启闭门16保持在关闭状态。在利用板擦6擦拭黑板本体7的过程中，启闭门16处于关闭状态，此时锁定条131能够旋转至卡接销与卡接槽相互卡接的位置，保持锁定座132和锁定条131之间相对位置的稳定。
进一步的，可以在启闭门16上粘贴课程表或上课时间表等图表，能够实现空间的有效利用，提高黑板的整体美观性和实用性。
锁定条131能够在竖直平面内自由摆动，进而使卡接销进行位置变换，使其进入卡接槽内，或从卡接槽内脱出。当需要锁定时，旋转锁定条131使其端部的卡接销能够卡接于锁定座132的卡接槽内，保证启闭门16处于关闭状态。
一些可能的实现方式中，上述特征滤孔203采用如图8所示结构。参见图8，滤孔203在滤水盒2的底壁和周壁上分别设有若干个，滤孔203为长圆孔。
为了提高滤孔203的排水效率，将滤孔203设置为长圆孔的形式。相比圆形的滤孔，可以有效增大排水面积，保证污水的快速排出。
在一些实施例中，上述特征滤水盒2可以采用如图8所示结构。参见图8，滤水盒2的内底面上设有纵横交错的加强筋202。
滤水盒2的内底面上设置能够增强滤水盒2底部结构强度的加强筋202，避免板擦6受到挤压并将力传递给滤水盒2时，对滤水盒2产生破坏作用。加强筋202采用纵横交错布设的形式，使得纵横方向的加强筋202围合成的区域内具有滤孔203，即滤孔203处不被加强筋202遮挡，保证污水的有效排出。
作为一个并列的实施例，如果纵横方向的加强筋202围合成的区域内没有滤孔203，则需要在加强筋202上设有内外贯通的连通口，使围合成的区域与滤孔203之间能够有效连通，保证良好的排水性能。
在一些实施例中，上述特征滤水盒2可以采用如图8和图9所示结构。参见图8和图9，滤水盒2的底面上还设有排水槽204，排水槽204靠近滤水盒2的周壁设置，且排水槽204内也设有滤孔203，加强筋202位于排水槽204的内圈。
在滤水盒2的底面上靠近外周边缘的位置设置了向下凹陷的排水槽204，能够实现污水的有效汇集，避免污水从海绵内挤出后排放不及时造成污水重新吸入，保证了板擦6清洗的洁净度。
另外，滤水盒2的周壁上也设有滤孔203，周壁上的滤孔203靠近排水槽204设置，能够进一步提高排水速率。在此基础上，为了避免滤孔203的设置影响滤水盒2的结构强度，还可以设置与滤孔203走向垂直设置的加强筋202，以增强滤水盒2的结构强度。
参见图6和图9，在利用喷水件9向海绵上喷水的基础上，还利用滤水盒2上方的副喷头10喷淋板擦6的周壁。副喷头10设有若干个，均朝向滤水盒2的中心设置，副喷头10自上而下向靠近板擦6的一侧倾斜设置。
滤水盒2上方的副喷头10用于向板擦6的擦拭部位的外周进行喷淋，副喷头10由外而内向下倾斜设置，可以对板擦6的外周，尤其对擦拭部位的下部进行集中的喷刷，形成良好的冲洗作用，结合挤压件15的挤压效果，使板擦6下部海绵得到更好的清洁，避免喷水件9供水不足所造成的清洗不彻底的问题，提高了清洁度。
以上仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (21)

  1. 板擦清洗设备，其特征在于，包括：
    清洗箱，开口向上设置；
    滤水盒，设置于所述清洗箱内，用于承托板擦，所述滤水盒的底部设有贯通孔，所述滤水盒与所述清洗箱之间形成位于所述滤水盒下部的收集腔；
    挤压组件，设置于所述滤水盒的上方，用于下压所述板擦以挤出污水，所述挤压组件具有能够上下移动以挤压所述板擦的下压臂；
    喷淋件，设置于所述滤水盒的上方，用于向所述板擦的外周壁上喷水；以及
    底喷头，设置于所述滤水盒的下方，所述底喷头的开口向上，用于喷淋所述板擦。
  2. 如权利要求1所述的板擦清洗设备，其特征在于，所述滤水盒的内底壁上设有向上凸起以增大与所述板擦的接触面积的挤压凸起，所述挤压凸起能够配合所述挤压组件挤压所述板擦。
  3. 如权利要求2所述的板擦清洗设备，其特征在于，所述贯通孔设有若干个，且若干个所述贯通孔为长轴相互平行设置的长圆孔，所述挤压凸起为条形凸起，所述挤压凸起的延伸方向垂直于所述长圆孔的长轴方向设置，且所述挤压凸起跨设于所述贯通孔的上方。
  4. 如权利要求1所述的板擦清洗设备，其特征在于，所述滤水盒的上边缘设有向外下方折弯的挂檐，所述挂檐用于挂设于所述清洗箱的上缘。
  5. 如权利要求1-4中任一项所述的板擦清洗设备，其特征在于，所述清洗箱的内底面上设有若干个向上延伸、并用于承托所述滤水盒的承托柱，所述承托柱的上端设有倒锥形的锥形台。
  6. 如权利要求5所述的板擦清洗设备，其特征在于，所述清洗箱的内侧壁上还设有向内凸起以承托所述滤水盒的底面外缘的限位台，所述限位台的顶面与所述锥形台的顶面齐平。
  7. 如权利要求6所述的板擦清洗设备，其特征在于，所述滤水盒的中部设有向上凸起以承托所述板擦的承托台，所述贯通孔设置于所述承托台上，所述承托台的外周与所述滤水盒的内壁之间形成导流凹槽，所述导流凹槽上设有上下贯通的导水孔。
  8. 如权利要求7所述的板擦清洗设备，其特征在于，所述承托台的边缘还设有向上凸起以限位所述板擦的限位圈；在垂直于所述限位圈走向的方向上，所述限位圈的纵向截面为等腰三角形。
  9. 如权利要求8所述的板擦清洗设备，其特征在于，所述限位圈上间隔设有若干个用于向外导送污水的出水槽，所述出水槽与所述导水孔内外对应。
  10. 如权利要求1-4中任一项所述的板擦清洗设备，其特征在于，所述清洗箱的底部还设有排水管，所述底喷头与所述贯通孔上下对应。
  11. 如权利要求1所述的板擦清洗设备，其特征在于，所述下压臂的下端设有压座，所述压座的底面具有与所述板擦的顶面一致的弧度，所述压座的底面设有垫片，用于与所述板擦接触以挤压所述板擦。
  12. 带有板擦清洗功能的黑板，其特征在于，包括：
    黑板本体，一侧设有安装部，所述安装部上设有开口向外的安装腔；
    集水盒，设置于所述安装腔的底部；
    滤水盒，设置于所述集水盒内，且用于承托板擦，所述滤水盒上设有上下贯通的滤孔；
    喷水件，设置于所述集水盒的底部，且位于所述滤水盒下方，用于向所述板擦喷水；
    挤压件，设置于所述安装腔的顶部，用于下压所述板擦以挤出污水；以及
    副喷头，设置于所述滤水盒的上方，用于喷淋所述板擦的周壁。
  13. 如权利要求12所述的带有板擦清洗功能的黑板，其特征在于，所述喷水件包括：
    供水管，贯穿所述集水盒的侧壁设置；
    喷头，所述喷头的喷水口向上设置，且与所述滤孔上下对应。
  14. 如权利要求12所述的带有板擦清洗功能的黑板，其特征在于，所述滤水盒的上边缘设有向外折弯以挂设于所述集水盒的上边缘的挂接部，所述集水盒内设有向上延伸以承托于所述滤水盒的底面的受力柱，所述受力柱的上端设有向外周延伸的扩展部，所述扩展部的顶面贴合于所述滤水盒的底面。
  15. 如权利要求12所述的带有板擦清洗功能的黑板，其特征在于，所述挤压件包括：
    升降臂，所述升降臂的固定端连接于所述安装腔的内顶面上，所述升降臂的伸缩端向下延伸；
    挤压板，连接于所述升降臂的伸缩端，用于与所述板擦的顶面抵接以挤压所述板擦。
  16. 如权利要求15所述的带有板擦清洗功能的黑板，其特征在于，所述挤压板的底面上设有向下凸起的限位环，所述限位环用于环设于所述板擦的顶部外周以限位所述板擦。
  17. 如权利要求12所述的带有板擦清洗功能的黑板，其特征在于，所述安装部上还铰接有用于封堵所述安装腔的开口的启闭门，所述启闭门远离铰接点的一侧与所述安装部之间还设有锁定组件，所述锁定组件包括：
    锁定座，设置于所述安装部上，且具有上下贯穿的卡接槽；
    锁定条，一端转动连接于所述启闭门上、并能够在竖向平面内摆动，另一端设有适于卡接于所述卡接槽内的卡接销。
  18. 如权利要求12-17中任一项所述的带有板擦清洗功能的黑板，其特征在于，所述滤孔在所述滤水盒的底壁和周壁上分别设有若干个，所述滤孔为长圆孔。
  19. 如权利要求18所述的带有板擦清洗功能的黑板，其特征在于，所述滤水盒的内底面上设有纵横交错的加强筋。
  20. 如权利要求19所述的带有板擦清洗功能的黑板，其特征在于，所述滤水盒的底面上还设有排水槽，所述排水槽靠近所述滤水盒的周壁设置，且所述排水槽内也设有所述滤孔，所述加强筋位于所述排水槽的内圈。
  21. 如权利要求12-17中任一项所述的带有板擦清洗功能的黑板，其特征在于，所述副喷头设有若干个，且均朝向所述滤水盒的中心设置，所述副喷头自上而下向靠近所述板擦的一侧倾斜设置。
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