Cleaning plate

Abstract

The utility model relates to the technical field of building materials, and discloses a clean plate which comprises a core plate, panels arranged at the two ends of the core plate in the thickness direction, first keels arranged at the two ends of the core plate in the width direction, second keels arranged at the two ends of the core plate in the height direction and connecting pieces arranged at the corners of the core plate and used for connecting the first keels and the second keels. Each first keel is provided with a connecting groove which is sunken towards the interior of the core plate and a connecting rib which protrudes towards the exterior of the core plate, and the connecting grooves and the connecting ribs, located at the two ends of the core plate, of the first keels are arranged in a staggered mode, so that after the two clean plates are spliced together, the connecting grooves and the connecting ribs in the two opposite first keels are matched in an inserted mode; the first keels located at the two ends of the core plate are made to be the same in shape, so that the two first keels located at the two ends of the core plate can be produced through the same mold, the production cost of the first keels is reduced, and then the production cost of the cleaning plate is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of building materials, and in particular relates to a clean board. Background Art

[0002] A clean room is a room designed to remove pollutants such as particles, harmful air, and bacteria from the air within a certain range, and to control the indoor temperature, cleanliness, indoor pressure, airflow velocity and distribution, noise, vibration, lighting, and static electricity within a certain required range. Because clean rooms have high requirements for cleanliness, the enclosure system should be flat and smooth, without cracks, with tight interfaces and no particles falling off, to avoid dust accumulation and facilitate cleaning, which led to the emergence of clean panels.

[0003] At present, when constructing clean panels, it is necessary to use aluminum profiles to connect two adjacent clean panels. Due to different customer needs, the aluminum profiles need to be cut at the construction site, which makes it easy for the aluminum profiles to produce waste, resulting in a waste of aluminum profiles, increasing the installation cost of the clean panels and affecting the installation efficiency of the clean panels.

[0004] In order to reduce the installation cost of the clean board and improve the installation efficiency of the clean board, some clean boards are preset with a connection keel with a groove at one end and a connection keel with a convex rib at the other end of the clean board, so that when the clean boards are assembled, the convex rib on the next clean board is inserted into the groove on the previous clean board, so as to avoid the need to cut the connection keel during construction, thereby improving the installation efficiency of the clean board and avoiding the waste of the connection keel, so as to reduce the installation cost of the clean board. However, since two different connection keels are preset at both ends of the clean board, different molds need to be used to produce the connection keels, thereby increasing the production cost of the connection keels, and then increasing the production cost of the clean board. Utility Model Content

[0005] The present application provides a clean board to reduce the production cost of connecting keels, thereby reducing the production cost of the clean board.

[0006] The technical solution adopted in this application is:

[0007] A clean panel comprises a core panel, panels arranged at both ends of the core panel in the thickness direction, first keels arranged at both ends of the core panel in the width direction, second keels arranged at both ends of the core panel in the height direction, and connectors arranged at corners of the core panel and used to connect the first keels and the second keels, wherein the first keel has a connecting groove recessed toward the inside of the core panel and connecting ribs protruding toward the outside of the core panel, and the connecting grooves and connecting ribs of the first keels at both ends of the core panel are staggered so that after two clean panels are assembled together, the connecting grooves on the two opposite first keels are plugged into and matched with the connecting ribs.

[0008] By adopting the above technical scheme, since the connecting grooves and connecting ribs on the first keels at both ends of the core board are staggered, and after the two clean boards are assembled together, the connecting grooves and connecting ribs on the two opposite first keels are plugged into each other, so that the shapes of the first keels at both ends of the core board are the same, but the installation methods are different, so that the two first keels at both ends of the core board can be produced using the same mold, thereby reducing the production cost of the first keels, and further reducing the production cost of the clean boards.

[0009] In addition, the present application pre-sets the first keel at the end of the clean board, thereby avoiding the need to cut and process the profile used to connect the two clean boards at the construction site, thereby improving the installation efficiency of the clean board and avoiding material waste caused by cutting the profile, thereby reducing the installation cost of the clean board.

[0010] Optionally, a stopper cooperating with the core plate stopper is provided on one side of the first keel close to the core plate.

[0011] By adopting the above technical solution, when the cleaning board is produced, the stop part cooperates with the end stop of the core board. On the one hand, it can increase the contact area between the first keel and the core board, thereby increasing the connection stability between the first keel and the core board. On the other hand, the stop part can block the core board to avoid the core board extending into the first keel, thereby ensuring the dimensional accuracy of the cleaning board.

[0012] Optionally, the first keel has a connection surface on a side facing away from the core board, and after two clean boards are assembled together, there is a gap between two opposite connection surfaces.

[0013] By adopting the above technical solution, after the two clean panels are assembled together, there is a gap between the two relative connecting surfaces, that is, the gap between the two adjacent clean panels is increased by the setting of the connecting surface, so that subsequent staff can process the gap to improve the installation efficiency of the clean panels and increase the processing effect of the gap.

[0014] Optionally, the depth H of the connection groove and the length L of the connection rib satisfy: H<L, so that after the two clean panels are assembled together, there is a gap between the two opposite connection surfaces.

[0015] By adopting the above technical solution, since the depth of the connecting groove is less than the length of the connecting rib, after the two opposite first keels are matched together, the connecting rib has a portion exposed outside the connecting groove, so that there is a gap between the two opposite connecting surfaces, so as to increase the connection stability of the two adjacent clean panels, and at the same time, the gap between the adjacent clean panels is kept consistent, so as to improve the installation effect of the clean panels.

[0016] Optionally, the first keel has a central area and edge areas on both sides of the central area on a side away from the core plate, and the connecting groove and the connecting rib are both arranged in the central area.

[0017] By adopting the above technical solution, since the connecting ribs and the connecting grooves are both arranged in the central area, there is a distance between the connecting grooves and the connecting ribs and the panel, so that the staff can process the gap between two adjacent clean panels.

[0018] Optionally, the groove wall of the connecting groove and the side surface of the connecting rib are both provided with locking parts, and after the two clean panels are assembled together, the locking parts on the groove wall of the connecting groove are matched with the locking parts on the side surface of the connecting rib.

[0019] By adopting the above technical solution, after the two clean panels are assembled together, the locking parts on the two first keels are engaged with each other to avoid the separation of the two adjacent clean panels during the construction process, thereby increasing the connection stability of the two adjacent clean panels and further improving the construction quality of the clean panels.

[0020] Optionally, the locking portion has a guide surface and a stop surface located on a side of the guide surface close to the core plate.

[0021] By adopting the above technical solution, when two clean panels are spliced, the guide surface guides the locking portion so that the locking portion on one of the first keels can more easily pass over the locking portion on the other first keel, thereby reducing the difficulty of assembling the clean panels. After the locking portion passes over, the stop surfaces on the locking portion stop and cooperate with each other, thereby increasing the connection stability of the two clean panels.

[0022] Optionally, a connecting surface is provided on the side of the first keel facing away from the core board, and a positioning column and a positioning tube are provided on the connecting surface. After two clean boards are assembled together, the positioning columns on the two opposite first keels are plugged into and matched with the positioning tubes.

[0023] By adopting the above technical solution, after the two clean boards are assembled together, the positioning posts on the two first keels are plugged into and matched with the positioning tubes on the other first keel, so that the plug-in cooperation between the positioning posts and the positioning tubes can position the two clean boards, and at the same time, the connection points of the two clean boards are increased to increase the stability of the clean boards.

[0024] Optionally, the positioning column is provided with a receiving groove along its circumference, an elastic ring is provided in the receiving groove, the elastic ring has a notch so that the diameter of the elastic ring can change elastically, and the inner wall of the positioning tube is provided with an annular groove for accommodating the elastic ring.

[0025] By adopting the above technical solution, when the clean plates are spliced, the two clean plates are aligned, and then pressure is applied to one of the clean plates in the direction of the other clean plate, so that the connecting rib is inserted into the connecting groove, and the positioning column is inserted into the positioning tube. The elastic ring contacts the tube mouth of the positioning tube, and pressure is continuously applied to the clean plates, so that the elastic ring is deformed under the action of pressure, the distance between the opposite wall surfaces at the notch is reduced, and the diameter of the elastic ring is gradually reduced, so that the elastic ring moves to the inside of the positioning tube. When the elastic ring moves to the position of the annular groove, the elastic ring recovers the deformation and is clamped into the annular groove to complete the assembly of the clean plates. The setting of the elastic ring and the annular groove further increases the connection stability of the two adjacent clean plates, and further improves the stability of the clean plates.

[0026] Optionally, a pressure surface is provided on a side of the elastic ring facing away from the first keel, and the pressure surface is inclined along a direction close to the first keel toward a direction away from the positioning column.

[0027] By adopting the above technical solution, during the process of assembling the two clean panels, the pressure surface contacts the pipe mouth of the positioning tube, and then continues to apply pressure to the clean panels. Since the pressure surface is inclined along the direction close to the first keel toward the direction away from the positioning column, the elastic ring is deformed under the action of the pressure surface, so that the diameter of the elastic ring gradually decreases and enters the annular groove, thereby reducing the pressure that the staff needs to apply to the clean panels when installing them, thereby reducing the difficulty of installing the clean panels and improving the efficiency of assembling the clean panels.

[0028] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0029] 1. The clean board in the present application includes a core board, first keels arranged at both ends of the core board in the thickness direction, second keels arranged at both ends of the core board in the height direction, and a connecting piece arranged at the corner of the core board and used to connect the first keel and the second keel, the first keel having a connecting groove recessed toward the inside of the core board and a connecting rib protruding toward the outside of the core board, and the connecting grooves and connecting ribs of the first keels at both ends of the core board are staggered so that after the two clean boards are assembled together, the connecting grooves on the two opposite first keels are plugged into and matched with the connecting ribs, thereby making the shapes of the first keels at both ends of the core board the same, so that the two first keels at both ends of the core board can be produced using the same mold, so as to reduce the production cost of the first keels, thereby reducing the production cost of the clean board; and, by presetting the first keel at the end of the clean board, the present application avoids the need to cut and process the profile used to connect the two clean boards at the construction site, thereby improving the installation efficiency of the clean board and avoiding material waste caused by cutting the profile, thereby reducing the installation cost of the clean board.

[0030] 2. The first keel in the present application is provided with a stopper portion cooperating with the core plate stopper on the side close to the core plate. On the one hand, it can increase the contact area between the first keel and the core plate, thereby increasing the connection stability between the first keel and the core plate. On the other hand, the stopper portion can block the core plate to avoid the core plate extending into the first keel, thereby ensuring the dimensional accuracy of the cleaning plate.

[0031] 3. In the present application, the first keel has a connecting surface on the side facing away from the core board. After the two clean boards are assembled together, there is a gap between the two opposite connecting surfaces. That is to say, the gap between the two adjacent clean boards is increased by the setting of the connecting surface, so that subsequent staff can process the gap to improve the installation efficiency of the clean boards and increase the processing effect of the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0033] Figure 1 This is an exploded schematic diagram of the clean plate described in one embodiment of the present application;

[0034] Figure 2 This is a cross-sectional view of two clean plates assembled together in one embodiment of the present application;

[0035] Figure 3 This is a schematic structural diagram of the first keel in one implementation manner of the present application;

[0036] Figure 4 for Figure 3 A magnified view of the middle A area;

[0037] Figure 5 A cross-sectional view of two of the first keels connected together in one embodiment of the present application;

[0038] Figure 6 for Figure 5 Enlarged view of the B area;

[0039] Figure 7 for Figure 5 Magnified view of area C in the middle.

[0040] Reference numerals:

[0041] 1. Core board; 2. Panel; 3. First keel; 31. Connecting groove; 32. Connecting rib; 33. Stopper; 34. Connecting surface; 35. Locking part; 36. Positioning column; 361. Accommodating groove; 362. Elastic ring; 363. Notch; 37. Positioning tube; 371. Annular groove; 4. Second keel; 5. Connector. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0044] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0047] Reference Figures 1 to 7 A clean board comprises a core board 1, panels 2 arranged at both ends of the core board 1 in the thickness direction, first keels 3 arranged at both ends of the core board 1 in the width direction, second keels 4 arranged at both ends of the core board 1 in the height direction, and connectors 5 arranged at corners of the core board 1 and used to connect the first keel 3 and the second keel 4. The first keel 3 has a connecting groove 31 recessed toward the inside of the core board 1 and a connecting rib 32 protruding toward the outside of the core board 1. The connecting grooves 31 and the connecting rib 32 of the first keels 3 at both ends of the core board 1 are staggered so that after the two clean boards are assembled together, the connecting grooves 31 on the two opposite first keels 3 are plugged into and matched with the connecting rib 32.

[0048] Since the connecting grooves 31 and the connecting ribs 32 on the first keels 3 at both ends of the core board 1 are staggered, and after the two clean boards are assembled together, the connecting grooves 31 and the connecting ribs 32 on the two opposite first keels 3 are plugged into each other, so that the shapes of the first keels 3 at both ends of the core board 1 are the same, but the installation methods are different, so that the two first keels 3 at both ends of the core board 1 can be produced using the same mold, so as to reduce the production cost of the first keels 3, and further reduce the production cost of the clean boards.

[0049] Furthermore, the present application pre-sets the first keel 3 at the end of the clean board, thereby avoiding the need to cut and process the profile used to connect the two clean boards at the construction site, thereby improving the installation efficiency of the clean board, while avoiding material waste caused by cutting the profile, thereby reducing the installation cost of the clean board.

[0050] The present application does not specifically limit the structure of the connecting member 5. Preferably, refer to Figure 1The connector 5 is an L-shaped injection-molded corner, one end of which extends into the first keel 3, and the other end of which extends into the second keel 4, so as to improve the product quality of the clean board. In other embodiments, the connector 5 can also be a block structure or an L-shaped sheet structure.

[0051] In a preferred embodiment, referring to Figure 2 , Figure 3 and Figure 5 A stopper 33 cooperating with the core plate 1 is provided on one side of the first keel 3 close to the core plate 1 .

[0052] When the cleaning board is produced, the stopper 33 cooperates with the end stopper of the core board 1, which can increase the contact area between the first keel 3 and the core board 1, thereby increasing the connection stability between the first keel 3 and the core board 1, and can also make the stopper 33 block the core board 1 to prevent the core board 1 from extending into the first keel 3, thereby ensuring the dimensional accuracy of the cleaning board. At the same time, the setting of the stopper 33 can also increase the connection area between the first keel 3 and the connecting member 5, so as to improve the product quality of the clean board.

[0053] The present application does not specifically limit the structure of the stopper 33. Preferably, refer to Figure 2 , Figure 3 and Figure 5 The stopper 33 is a plate-shaped structure disposed on the side of the first keel 3 close to the core plate 1, so as to increase the contact area between the stopper 33 and the core plate 1, thereby increasing the stopping effect on the core plate 1; at the same time, the setting of the stopper 33 can also increase the connection stability between the connector 5 and the first keel 3. In other embodiments, the stopper 33 can also be a block-shaped structure.

[0054] In a preferred embodiment, referring to Figure 3 The first keel 3 has a connecting surface 34 on the side facing away from the core board 1. After the two clean boards are assembled together, there is a gap between the two opposite connecting surfaces 34.

[0055] After the two clean panels are assembled together, there is a gap between the two connecting surfaces 34. That is to say, the gap between the two adjacent clean panels is increased by the setting of the connecting surface 34, so that subsequent staff can process the gap to improve the installation efficiency of the clean panels and increase the processing effect of the gap.

[0056] Further, see Figure 2 , Figure 3 and Figure 5 The depth H of the connecting groove 31 and the length L of the connecting rib 32 satisfy: H<L, so that after the two clean boards are assembled together, there is a gap between the two opposite connecting surfaces 34.

[0057] Since the depth of the connecting groove 31 is less than the length of the connecting rib 32, after the two opposite first keels 3 are matched together, the connecting rib 32 has a portion exposed outside the connecting groove 31, so that there is a gap between the two opposite connecting surfaces 34, so as to increase the connection stability of the two adjacent clean panels, and at the same time keep the gap between the adjacent clean panels consistent, so as to improve the installation effect of the clean panels.

[0058] In a preferred embodiment, the first keel 3 has a central area and edge areas on both sides of the central area on a side facing away from the core plate 1 , and the connecting grooves 31 and the connecting ribs 32 are both arranged in the central area.

[0059] Since the connecting ribs 32 and the connecting grooves 31 are both arranged in the central area, there is a distance between the connecting grooves 31 and the connecting ribs 32 and the panel 2, so that the staff can process the gap between two adjacent clean panels.

[0060] In a preferred embodiment, referring to Figure 3 and Figure 6 The groove wall of the connecting groove 31 and the side of the connecting rib 32 are both provided with locking parts 35. After the two clean boards are assembled together, the locking parts 35 on the groove wall of the connecting groove 31 and the locking parts 35 on the side of the connecting rib 32 are stopped and matched.

[0061] After the two clean panels are assembled together, the locking portions 35 on the two first keels 3 are engaged to prevent the two adjacent clean panels from being separated during the construction process, thereby increasing the connection stability of the two adjacent clean panels and further improving the construction quality of the clean panels.

[0062] Furthermore, the locking portion 35 has a guide surface and a stop surface located on a side of the guide surface close to the core plate 1 .

[0063] When two clean panels are spliced, the guide surface guides the locking portion 35 so that the locking portion 35 on one of the first keels 3 can easily pass over the locking portion 35 on the other first keel 3, thereby reducing the difficulty of assembling the clean panels. After the locking portion 35 passes over, the stop surfaces on the locking portion 35 stop and cooperate with each other to increase the connection stability of the two clean panels.

[0064] The present application does not specifically limit the structure of the locking portion 35. Preferably, the locking portion 35 is a strip-shaped structure to increase the connection stability of the two clean plates. In other embodiments, the locking portion 35 may also be a sheet-shaped structure.

[0065] In a preferred embodiment, referring to Figures 3 to 7A connecting surface 34 is provided on the side of the first keel 3 facing away from the core board 1, and a positioning column 36 and a positioning tube 37 are provided on the connecting surface 34. After the two clean boards are assembled together, the positioning columns 36 and the positioning tubes 37 on the two opposite first keels 3 are plugged into each other.

[0066] After the two clean boards are assembled together, the positioning posts 36 on the two first keels 3 are plugged into the positioning tubes 37 on the other first keel 3, so that the plugging and cooperation between the positioning posts 36 and the positioning tubes 37 can position the two clean boards and increase the connection points of the two clean boards to increase the stability of the clean boards.

[0067] The present application does not impose any specific limitation on the connection method between the positioning tube 37 and the positioning column 36 and the first keel 3 . The positioning tube 37 and the positioning column 36 may be integrally formed with the first keel 3 , or may be installed on the first keel 3 by fasteners.

[0068] Further, see Figure 4 and Figure 7 The positioning column 36 is provided with a receiving groove 361 along its circumference, and an elastic ring 362 is provided in the receiving groove 361. The elastic ring 362 has a notch 363 so that the diameter of the elastic ring 362 can change elastically. The inner wall of the positioning tube 37 is provided with an annular groove 371 for accommodating the elastic ring 362.

[0069] When the clean plates are spliced, the two clean plates are aligned, and then pressure is applied to one of the clean plates in the direction of the other clean plate, so that the connecting rib 32 is inserted into the connecting groove 31, and the positioning column 36 is inserted into the positioning tube 37. The elastic ring 362 contacts the pipe mouth of the positioning tube 37, and pressure is continued to be applied to the clean plates, so that the elastic ring 362 is deformed under the action of pressure, the distance between the opposite wall surfaces at the notch 363 is reduced, and the diameter of the elastic ring 362 is gradually reduced, so that the elastic ring 362 moves to the inside of the positioning tube 37. When the elastic ring 362 moves to the position of the annular groove 371, the elastic ring 362 recovers its deformation and is snapped into the annular groove 371 to complete the assembly of the clean plates. The setting of the elastic ring 362 and the annular groove 371 further increases the connection stability of the two adjacent clean plates, and further improves the stability of the clean plates.

[0070] Furthermore, a pressure-bearing surface is provided on a side of the elastic ring 362 facing away from the first keel 3 , and the pressure-bearing surface is inclined along a direction close to the first keel 3 toward a direction away from the positioning column 36 .

[0071] During the process of assembling the two clean panels, the pressure surface contacts the pipe mouth of the positioning tube 37, and then continues to apply pressure to the clean panels. Since the pressure surface is inclined along the direction close to the first keel 3 toward the direction away from the positioning column 36, the elastic ring 362 is deformed under the action of the pressure surface, so that the diameter of the elastic ring 362 gradually decreases and enters the annular groove 371, thereby reducing the pressure that the staff needs to apply to the clean panels when installing them, thereby reducing the difficulty of installing the clean panels and improving the efficiency of assembling the clean panels.

[0072] Preferably, the end of the positioning column 36 is provided with a chamfer to reduce the diameter of the end of the positioning column 36 so that the positioning column 36 can enter the positioning tube 37 more easily, thereby further reducing the difficulty of assembling the clean plate.

[0073] The present application does not specifically limit the structure of the second keel 4. If the cleaning board needs to be spliced ​​in the up-down direction (i.e., the height direction of the core board 1), the second keel 4 can adopt the same structure as the first keel 3 to reduce the installation efficiency and installation cost of the cleaning board. If the cleaning board only needs to be spliced ​​in the left-right direction (i.e., the width direction of the core board 1), the second keel 4 can be a plate-like structure or other flat structure.

[0074] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0075] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0076] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A clean plate, characterized in that: The invention comprises a core plate (1), panels (2) arranged at both ends of the core plate (1) in the thickness direction, first keels (3) arranged at both ends of the core plate (1) in the width direction, second keels (4) arranged at both ends of the core plate (1) in the height direction, and a connecting piece (5) arranged at the corner of the core plate (1) and used to connect the first keel (3) and the second keel (4), wherein the first keel (3) has a connecting groove (31) recessed toward the inside of the core plate (1) and a connecting rib (32) protruding toward the outside of the core plate (1), and the connecting grooves (31) and the connecting rib (32) of the first keel (3) at both ends of the core plate (1) are staggered so that after two clean panels are assembled together, the connecting grooves (31) and the connecting rib (32) on the two opposite first keels (3) are plugged into and matched with each other.

2. A clean plate according to claim 1, characterized in that: A stopper (33) that cooperates with the core plate (1) is provided on one side of the first keel (3) close to the core plate (1).

3. A clean plate according to claim 1, characterized in that: The first keel (3) has a connection surface (34) on one side facing away from the core board (1), and after the two clean boards are assembled together, there is a gap between the two opposite connection surfaces (34).

4. A clean plate according to claim 3, characterized in that: The depth H of the connection groove (31) and the length L of the connection rib (32) satisfy: H<L, so that after the two clean panels are assembled together, there is a gap between the two opposite connection surfaces (34).

5. A clean plate according to claim 1, characterized in that: The first keel (3) has a central area and edge areas on both sides of the central area on a side facing away from the core plate (1), and the connecting groove (31) and the connecting rib (32) are both arranged in the central area.

6. A clean plate according to claim 1, characterized in that: The groove wall of the connecting groove (31) and the side surface of the connecting rib (32) are both provided with locking portions (35). After the two clean panels are assembled together, the locking portions (35) on the groove wall of the connecting groove (31) and the locking portions (35) on the side surface of the connecting rib (32) are engaged with each other.

7. A clean plate according to claim 6, characterized in that: The locking portion (35) comprises a guide surface and a stop surface located on a side of the guide surface close to the core plate (1).

8. A clean plate according to claim 1, characterized in that: A connecting surface (34) is provided on the side of the first keel (3) facing away from the core board (1), and a positioning column (36) and a positioning tube (37) are provided on the connecting surface (34). After the two clean boards are assembled together, the positioning columns (36) on the two opposite first keels (3) are plugged into and matched with the positioning tube (37).

9. A clean plate according to claim 8, characterized in that: The positioning column (36) is provided with a receiving groove (361) along its circumference, an elastic ring (362) is provided in the receiving groove (361), and the elastic ring (362) has a notch (363) so that the diameter of the elastic ring (362) can change elastically, and the inner wall of the positioning tube (37) is provided with an annular groove (371) for accommodating the elastic ring (362).

10. A clean plate according to claim 9, characterized in that: A pressure-bearing surface is provided on the side of the elastic ring (362) facing away from the first keel (3), and the pressure-bearing surface is inclined along a direction close to the first keel (3) and in a direction away from the positioning column (36).

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