Mineral wool board and suspended ceiling system

Abstract

The utility model relates to building decoration technical field provides a kind of mineral wool board and ceiling system, mineral wool board includes board body, the side surface edge of board body is provided with first lap joint groove, second lap joint groove, third lap joint groove and fourth lap joint groove, first lap joint groove and third lap joint groove are oppositely arranged, second lap joint groove and fourth lap joint groove are oppositely arranged, there is preset height difference between the bottom of first lap joint groove and the bottom of third lap joint groove, to make board body be obliquely installed in ceiling joist. The mineral wool board provided by the utility model is provided with first lap joint groove and third lap joint groove on the opposite sides of board body respectively, and preset height difference is formed between the bottom of the two lap joint grooves, so that the mineral wool board presents an inclined posture when installed in the ceiling joist, can effectively reflect and guide natural light, introduce it deeper into the room, improve the uniformity of illumination and overall brightness, thereby improve the indoor light environment, and further reduce the visual fatigue of user, improve the space comfort experience.

Description

Technical Field

[0001] This utility model relates to the field of building decoration technology, and in particular to a mineral wool board and ceiling system. Background Technology

[0002] Mineral wool board is a building decoration material made primarily from mineral wool. It possesses excellent properties such as lightweight, fire resistance, sound absorption, and heat insulation. Furthermore, due to its non-toxic, harmless, and recyclable characteristics, it is widely recognized as a green and environmentally friendly building material. Mineral wool boards are widely used in ceiling decoration in indoor spaces such as office buildings, shopping malls, hospitals, and schools, meeting both functional needs and enhancing the aesthetics of the space. Traditional mineral wool board installation typically employs a keel frame structure, using metal or wooden keels to build a support system, ensuring the stability and flatness of the boards.

[0003] Interior spaces decorated with mineral wool boards often suffer from insufficient natural light, resulting in low overall illumination. Long-term exposure to such environments can easily cause visual fatigue and affect the comfort of the space. Utility Model Content

[0004] This utility model provides a mineral wool board and ceiling system to solve the problem of low indoor lighting in the existing mineral wool board decoration. By installing the mineral wool board at an angle, natural light can be increased to enter the room, thereby improving the indoor lighting environment, reducing visual fatigue of users, and enhancing the comfort of the space.

[0005] This utility model provides a mineral wool board, including a board body. One side surface edge of the board body is provided with a first overlapping groove, a second overlapping groove, a third overlapping groove and a fourth overlapping groove. The first overlapping groove and the third overlapping groove are arranged opposite to each other, and the second overlapping groove and the fourth overlapping groove are arranged opposite to each other. There is a preset height difference between the bottom surface of the first overlapping groove and the bottom surface of the third overlapping groove, so that the board body is installed at an angle on the ceiling joists.

[0006] According to the present invention, the bottom surface of the second overlapping groove is inclined, one end of the second overlapping groove is connected to one end of the first overlapping groove, and the other end of the second overlapping groove is connected to one end of the third overlapping groove.

[0007] According to the mineral wool board provided by this utility model, the bottom surface of the fourth overlapping groove is inclined, one end of the fourth overlapping groove is connected to the other end of the first overlapping groove, and the other end of the fourth overlapping groove is connected to the other end of the third overlapping groove.

[0008] According to the present invention, a mineral wool board has a thickness of 30 mm or more.

[0009] According to the mineral wool board provided by this utility model, the groove height of the first overlapping groove is less than the groove height of the third overlapping groove, and the groove height of the first overlapping groove is greater than or equal to 3mm.

[0010] According to the present invention, the distance between the bottom surface of the third overlapping groove and the other side surface of the board body is greater than or equal to 7 mm.

[0011] According to the mineral wool board provided by this utility model, the groove width L1 of at least one of the first overlapping groove, the second overlapping groove, the third overlapping groove and the fourth overlapping groove is in the range of 7mm≤L1≤11mm.

[0012] According to the present invention, the widths of the first overlapping groove, the second overlapping groove, the third overlapping groove, and the fourth overlapping groove are equal.

[0013] According to the present invention, a mineral wool board is provided with a reflective layer on one side surface of the board body.

[0014] This utility model also provides a ceiling system, including ceiling keel and mineral wool board as described in any one of the above; The ceiling keel is provided with four overlapping structures, which are respectively connected to the first overlapping groove, the second overlapping groove, the third overlapping groove and the fourth overlapping groove.

[0015] According to the present invention, a ceiling system is provided in which multiple mineral wool boards are provided, and the multiple mineral wool boards have the same inclination direction, or the inclination directions of two adjacent mineral wool boards are opposite along a preset direction.

[0016] The mineral wool board provided by this utility model has a first overlapping groove and a third overlapping groove respectively set on opposite sides of the board body, and a preset height difference is formed between the bottom surfaces of the two overlapping grooves. This allows the mineral wool board to be installed in an inclined posture when installed on the ceiling joists, which can effectively reflect and guide natural light, bringing it deeper into the room, improving the uniformity of lighting and overall brightness, thereby improving the indoor lighting environment, reducing visual fatigue of users, and enhancing the comfort experience of the space. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1This is one of the structural schematic diagrams of the mineral wool board provided by this utility model.

[0019] Figure 2 This is the second structural schematic diagram of the mineral wool board provided by this utility model.

[0020] Figure 3 This is the third structural schematic diagram of the mineral wool board provided by this utility model.

[0021] Figure 4 yes Figure 3 A schematic diagram of the structure along direction A.

[0022] Figure 5 yes Figure 3 A schematic diagram of the structure along direction B.

[0023] Figure 6 This is a schematic diagram of the structure of the mineral wool board and ceiling joists provided by this utility model.

[0024] Figure 7 This is a structural schematic diagram of the ceiling keel provided by this utility model.

[0025] Figure label: 100. Mineral wool board; 110. Board body; 120. First overlap groove; 130. Second overlap groove; 140. Third overlap groove; 150. Fourth overlap groove; 200. Ceiling joists; 210. Overlapping structure. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0029] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The following is combined Figures 1-7 This invention describes a mineral wool board.

[0032] The first aspect of this utility model provides a mineral wool board, such as Figures 1 to 5 As shown, the mineral wool board includes a board body 110. One side surface edge of the board body 110 is provided with a first overlapping groove 120, a second overlapping groove 130, a third overlapping groove 140 and a fourth overlapping groove 150. The first overlapping groove 120 and the third overlapping groove 140 are arranged opposite to each other, and the second overlapping groove 130 and the fourth overlapping groove 150 are arranged opposite to each other. There is a preset height difference between the bottom surface of the first overlapping groove 120 and the bottom surface of the third overlapping groove 140, so that the board body 110 is installed at an angle on the ceiling joist 200.

[0033] Understandably, the four edges of one side surface of the board body 110 (usually the decorative surface facing the interior) are respectively provided with a first overlapping groove 120, a second overlapping groove 130, a third overlapping groove 140, and a fourth overlapping groove 150. These overlapping grooves are distributed along the four edges of the board body 110 to achieve splicing and positioning with the ceiling joists 200. Among them, the first overlapping groove 120 and the third overlapping groove 140 are located on opposite sides, and the second overlapping groove 130 and the fourth overlapping groove 150 are located on another set of opposite sides; and a preset height difference is provided between the bottom surfaces of the first overlapping groove 120 and the bottom surfaces of the third overlapping groove 140, that is, the depths of the two are different. When the mineral wool board is installed on the ceiling joists 200 through the overlapping grooves, this preset height difference causes the board body 110 to present a certain tilt angle after installation, rather than the traditional horizontal flat state. When the panel body 110 is installed at an angle, it can increase the amount of natural light entering the room, thereby improving the indoor lighting environment. In addition, the angled surface of the panel body 110 can serve as a light reflection and guiding surface, effectively changing the propagation path of natural light. When natural light enters the room from a window or skylight, the angled mineral wool panel surface can reflect and guide the light to deeper areas of the room, increasing the coverage and uniformity of light intensity, reducing shadow areas and dark corners, thereby improving the utilization efficiency of indoor natural lighting.

[0034] It should be noted that the panel body 110 has two opposing surfaces, namely the decorative surface (or front) and the backing surface (or back). The decorative surface is specially treated and has good sound absorption, moisture resistance, fire resistance and aesthetic properties. It is usually a flat or textured surface facing downwards (i.e. facing the interior space) and plays a role in decoration and functional adjustment. The backing surface is generally in contact with the ceiling joists 200 and is mainly used to enhance the structural stability and installation compatibility of the panel. It is usually not exposed in the field of vision.

[0035] The mineral wool board provided in this embodiment of the utility model has a first overlapping groove 120 and a third overlapping groove 140 respectively set on opposite sides of the board body 110, and a preset height difference is formed between the bottom surfaces of the two overlapping grooves. This allows the mineral wool board to be installed on the ceiling keel 200 in an inclined posture, which can effectively reflect and guide natural light, bringing it deeper into the room, improving the uniformity of lighting and overall brightness, thereby improving the indoor lighting environment, reducing visual fatigue of users, and enhancing the comfort experience of the space.

[0036] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the bottom surface of the second overlapping groove 130 is inclined, one end of the second overlapping groove 130 is connected to one end of the first overlapping groove 120, and the other end of the second overlapping groove 130 is connected to one end of the third overlapping groove 140.

[0037] It is understood that there is a preset height difference between the bottom surfaces of the first overlapping groove 120 and the third overlapping groove 140, which is used to realize the overall inclined installation of the mineral wool board. The two ends of the second overlapping groove 130 are respectively connected to one end of the first overlapping groove 120 and one end of the third overlapping groove 140. The bottom surface of the second overlapping groove 130 is inclined. This inclined surface is set at a certain angle relative to the surface of the board body 110, that is, it is not parallel to the surface of the board body 110, but extends inclinedly along the thickness direction.

[0038] It should be noted that since the installation surface of the ceiling keel 200 is usually designed as a plane of equal height, the flat bottom surface of the second overlapping groove 130 can perfectly match it. That is, even when there is a preset height difference between the first overlapping groove 120 and the third overlapping groove 140 to achieve the inclined installation of the mineral wool board, the second overlapping groove 130 can still maintain good contact with the keel through its flat bottom surface, playing an auxiliary support and guiding role, thereby ensuring the stability of the ceiling system.

[0039] Optionally, the bottom surface of the fourth overlapping groove 150 is inclined, one end of the fourth overlapping groove 150 is connected to the other end of the first overlapping groove 120, and the other end of the fourth overlapping groove 150 is connected to the other end of the third overlapping groove 140.

[0040] It should be noted that the fourth overlap groove 150 adopts the same structural form as the second overlap groove 130. The two are set opposite to each other on the board body 110 and extend parallel to the edge of the board body 110 to form a symmetrical and coordinated overlap form. This not only enhances the structural stability and stress balance during the installation of the mineral wool board, but also facilitates the positioning and tilting arrangement of the board body 110 on the ceiling keel 200.

[0041] In one embodiment of this utility model, such as Figure 3 As shown, the thickness of the plate body 110 is greater than or equal to 30 mm.

[0042] Understandably, after the first to fourth overlapping grooves are machined into the board body 110, the material portion between the bottom of the groove and the backing surface forms a support layer that connects with the ceiling joists 200. To ensure that this support layer has sufficient structural strength, the overall thickness of the board body 110 is designed to be greater than 30 mm, so that the thickness of the support structure remains at a high level, significantly improving the rigidity and load-bearing capacity of the edge area of ​​the board body 110. This ensures the stability and durability of the connection between the mineral wool board and the ceiling joists 200, preventing loosening and sagging during use, and guaranteeing the installation reliability and long-term operational safety of the ceiling system.

[0043] It should be noted that the thickness T of the board body 110 in this embodiment is greater than or equal to 30 mm. Compared with the conventional 20 mm thick mineral wool board, it has higher material density and greater acoustic quality, which can improve the sound insulation performance of the mineral wool board and effectively enhance its ability to block airborne sound and impact sound. It is particularly effective in suppressing low-frequency mechanical noise and airflow noise generated by fresh air systems, air conditioning equipment, etc. in the upper building.

[0044] In this embodiment, the thickness T of the board body 110 ranges from 30mm to 32mm. It should be noted that processing the mineral wool board to a thickness of 30mm to 32mm falls within the scope of existing technology and will not be described in detail here.

[0045] Furthermore, such as Figure 5 As shown, the height of the first lap groove 120 is less than the height of the third lap groove 140, and the height of the first lap groove 120 is greater than or equal to 3 mm.

[0046] Understandably, the first overlapping groove 120 forms an overlapping space for mating with the ceiling joist 200. The ceiling joist 200 is correspondingly provided with a matching overlapping structure 210 (such as a snap-fit, flange, or support wing). The dimensions of this overlapping structure 210 are adapted to the installation space formed by the first overlapping groove 120, ensuring a secure fit and reliable installation of the mineral wool board. Figure 4 As shown, the groove height T1 of the first overlapping groove 120 is set to be greater than or equal to 3 mm to ensure that the overlapping structure 210 can be fully embedded in the first overlapping groove 120 to form sufficient contact area and support depth, thereby ensuring the strength and stability of the connection and preventing the mineral wool board from loosening, slipping or local deformation during use.

[0047] It should be noted that if the height of the first overlap groove 120 is less than 3 mm, the overlap structure cannot be fully inserted, the overlap area is small, the effective support is insufficient, it is difficult to withstand the influence of the mineral wool board's own weight, and there is a risk of falling off.

[0048] Furthermore, such as Figure 4 As shown, the distance between the bottom surface of the third lap groove 140 and the other side surface of the plate body 110 is greater than or equal to 7 mm.

[0049] It is understandable that the height of the third overlapping groove 140 is greater than that of the first overlapping groove 120. If the third overlapping groove 140 is too high, the supporting portion formed between the bottom surface of the third overlapping groove 140 and the other side surface of the board body 110 will be too thin, and the mineral wool board will not be able to effectively overlap with the ceiling joist 200, posing a risk of the mineral wool board slipping off. Therefore, to ensure the reliability of the connection and the safety of long-term use, this utility model designs the distance T3 between the bottom surface of the third overlapping groove 140 and the backing surface of the board body 110 to be greater than or equal to 7 mm. While ensuring the realization of the inclined installation function of the mineral wool board, sufficient structural margin is retained, effectively improving the connection strength and ensuring the overall safety of the ceiling system.

[0050] In one embodiment of this utility model, such as Figure 4 As shown, the value range of the groove width L1 of at least one of the first lap groove 120, the second lap groove 130, the third lap groove 140 and the fourth lap groove 150 is: 7mm≤L1≤11mm.

[0051] Understandably, at least one of the first overlapping groove 120, the second overlapping groove 130, the third overlapping groove 140, and the fourth overlapping groove 150 has a groove width L1 designed to be between 7 mm and 11 mm. When the groove width L1 is not less than 7 mm, it can ensure that the overlapping structure 210 (such as metal clips, support wings, or connectors) on the ceiling keel 200 has sufficient embedding space and contact area, effectively transferring loads, improving the stability and shear resistance of the connection, and avoiding assembly difficulties or stress concentration due to excessively small gaps. When the groove width is not greater than 11 mm, it can prevent the overlapping structure 210 from shaking in the groove or generating excessive gaps, ensuring the flatness and firmness of the mineral wool board after installation, while avoiding weakening the structural integrity of the board edge due to excessively wide grooves.

[0052] Optionally, the width L1 of the first lap groove 120, the second lap groove 130, the third lap groove 140 and the fourth lap groove 150 are equal.

[0053] In one embodiment of the present invention, a reflective layer is provided on one side surface of the plate body 110.

[0054] Understandably, the mineral wool board body 110 has a reflective layer on the interior-facing surface (i.e., the decorative surface). This reflective layer can be a high-reflectivity material coated, sprayed, filmed, or laminated onto the board surface, such as a white high-gloss coating, a metal oxide coating, or a mirror film, which has a high visible light reflectivity to enhance the reflectivity of the mineral wool board surface to natural and artificial light sources. Especially in a structure where the board body 110 is installed at an angle, it can more effectively reflect natural light entering from windows or skylights into the interior area, enhancing the light diffusion effect and the uniformity of spatial illumination.

[0055] In this embodiment, the reflective layer has a reflectivity of 0.9.

[0056] In one specific embodiment of this utility model, such as Figures 1 to 5 As shown, the mineral wool board includes a board body 110. One side surface edge of the board body 110 is provided with a first overlapping groove 120, a second overlapping groove 130, a third overlapping groove 140 and a fourth overlapping groove 150 connected end to end. The first overlapping groove 120 and the third overlapping groove 140 are arranged opposite to each other, and the second overlapping groove 130 and the fourth overlapping groove 150 are arranged opposite to each other. The groove height of the first overlapping groove 120 is less than the groove height of the third overlapping groove 140.

[0057] The thickness T of the plate body 110 is in the range of 30mm≤T≤32mm; the groove height T1 of the first lap groove 120 is in the range of T1≥3 mm; the distance T3 between the bottom surface of the third lap groove 140 and the backing surface of the plate body 110 is in the range of T3≥7 mm; the groove width L1 of the first lap groove 120, the second lap groove 130, the third lap groove 140 and the fourth lap groove 150 is equal, and the value of L1 is in the range of 7mm≤L1≤11mm.

[0058] It should be noted that, based on the design conditions of T1≥3 mm, T3≥7 mm, and T1<T2 (the groove height of the first overlapping groove 120 is less than the groove height of the third overlapping groove 140), and taking into account the limitation of the mineral wool board thickness (such as 30 mm~32 mm), the dimensions of T1 and T2 are reasonably set; by controlling T1 to form a specific difference with T2 while meeting the minimum groove height requirement, the preset height difference between the bottom surface of the first overlapping groove 120 and the bottom surface of the third overlapping groove 140 is ensured, thereby ensuring that the mineral wool board can stably present the required tilt angle after installation.

[0059] For example, the panel body 110 is square with equal length and width. The thickness T of the panel body 110 is 31 mm. The groove height T1 of the first overlapping groove 120 is 3 mm, the groove height T2 of the third overlapping groove 140 is 21 mm, and the distance T3 between the bottom surface of the third overlapping groove 140 and the backing surface of the panel body 110 is 10 mm. The length and width L of the backing surface of the panel body 110 are 593 mm. The groove width L1 of the first overlapping groove 120, the second overlapping groove 130, the third overlapping groove 140 and the fourth overlapping groove 150 is 9.5 mm. The length and width L2 of the decorative surface of the panel body 110 are 574 mm.

[0060] A second aspect of this utility model provides a ceiling system, such as... Figure 6 and Figure 7As shown, the ceiling system includes a ceiling joist 200 and a mineral wool board 100 provided in any of the above embodiments.

[0061] The ceiling keel 200 has four sections, and the four overlapping structures 210 are respectively connected to the first overlapping groove 120, the second overlapping groove 130, the third overlapping groove 140 and the fourth overlapping groove 150.

[0062] It is understandable that the ceiling keel 200 is provided with a connection structure, which includes four overlapping structures 210. The four overlapping structures 210 are distributed on the keel in a corresponding manner, and respectively cooperate with the first overlapping groove 120, the second overlapping groove 130, the third overlapping groove 140 and the fourth overlapping groove 150 on the edge of the mineral wool board 100 to achieve a connection.

[0063] It should be noted that the four overlapping structures 210 have the same structural form and are located at the same height plane. Since the groove depths of the first overlapping groove 120 and the third overlapping groove 140 on the mineral wool board 100 are different (i.e. there is a preset height difference between the bottom surfaces of the grooves), when the mineral wool board 100 is connected to the overlapping structure 210, one side (the side of the first overlapping groove 120) is embedded shallower and the other side (the side of the third overlapping groove 140) is embedded deeper. This causes the board body 110 to naturally form an inclined posture after installation, which can effectively reflect and guide natural light, bringing it deeper into the room, improving the uniformity of lighting and overall brightness, thereby improving the indoor lighting environment, reducing visual fatigue of users, and improving the comfort experience of the space.

[0064] In one embodiment of this utility model, there are multiple mineral wool boards 100, and the multiple mineral wool boards 100 have the same tilt direction.

[0065] It is understandable that the ceiling joists 200 have multiple connecting structures, the number of which is equal to the number of mineral wool boards 100. Multiple mineral wool boards 100 are installed one-to-one with each of the multiple connecting structures, and each mineral wool board 100 is arranged in the same tilt direction during installation; that is, the tilt angle and tilt direction of all mineral wool boards 100 are consistent. For example, multiple mineral wool boards 100 are tilted from left to right or from front to back, forming a coordinated, coherent, and orderly tilted array.

[0066] It should be noted that the multiple mineral wool boards 100 have the same tilt direction, which not only enhances the spatial visual guidance and rhythm, creating a smooth and dynamic three-dimensional ceiling effect, but also facilitates the directional reflection and uniform diffusion of natural light, allowing the light to spread along a predetermined path and further improving the quality of the indoor light environment.

[0067] In another embodiment of this utility model, there are multiple mineral wool boards 100, and the inclination directions of two adjacent mineral wool boards 100 are opposite along a preset direction.

[0068] Understandably, multiple mineral wool boards 100 are installed one-to-one on multiple connecting structures, and the multiple mineral wool boards 100 are arranged in an array to form a regular and orderly ceiling surface. The tilt directions of two adjacent mineral wool boards 100 are opposite along a preset direction (such as horizontal or vertical). For example, when a mineral wool board 100 is tilted with the left side higher and the right side lower, the next adjacent mineral wool board 100 is tilted with the left side lower and the right side higher, forming a V-shaped or herringbone alternating structure. The reverse tilt structure helps to guide natural light to form multi-path reflections between adjacent mineral wool boards 100, increasing the penetration depth and distribution uniformity of light in the room, and improving the overall lighting environment.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mineral wool board, characterized in that, The panel includes a board body, and one side surface edge of the board body is provided with a first overlapping groove, a second overlapping groove, a third overlapping groove and a fourth overlapping groove. The first overlapping groove and the third overlapping groove are arranged opposite to each other, and the second overlapping groove and the fourth overlapping groove are arranged opposite to each other. There is a preset height difference between the bottom surface of the first overlapping groove and the bottom surface of the third overlapping groove, so that the board body is installed at an angle on the ceiling joists.

2. The mineral wool board according to claim 1, characterized in that, The bottom surface of the second overlapping groove is inclined; one end of the second overlapping groove is connected to one end of the first overlapping groove; the other end of the second overlapping groove is connected to one end of the third overlapping groove; and / or, The bottom surface of the fourth overlapping groove is inclined, one end of the fourth overlapping groove is connected to the other end of the first overlapping groove, and the other end of the fourth overlapping groove is connected to the other end of the third overlapping groove.

3. The mineral wool board according to claim 1, characterized in that, The thickness of the plate body is greater than or equal to 30 mm.

4. The mineral wool board according to claim 3, characterized in that, The height of the first overlapping groove is less than the height of the third overlapping groove, and the height of the first overlapping groove is greater than or equal to 3 mm.

5. The mineral wool board according to claim 4, characterized in that, The distance between the bottom surface of the third overlapping groove and the other side surface of the plate body is greater than or equal to 7 mm.

6. The mineral wool board according to any one of claims 1 to 5, characterized in that, The value range of the groove width L1 of at least one of the first lap groove, the second lap groove, the third lap groove and the fourth lap groove is: 7mm≤L1≤11mm.

7. The mineral wool board according to claim 6, characterized in that, The widths of the first overlapping groove, the second overlapping groove, the third overlapping groove, and the fourth overlapping groove are equal.

8. The mineral wool board according to any one of claims 1 to 5, characterized in that, A reflective layer is provided on one side surface of the plate body.

9. A ceiling system, characterized in that, Includes ceiling joists and mineral wool boards as described in any one of claims 1 to 8; The ceiling keel is provided with four overlapping structures, which are respectively connected to the first overlapping groove, the second overlapping groove, the third overlapping groove and the fourth overlapping groove.

10. The ceiling system according to claim 9, characterized in that, There are multiple mineral wool boards, and the multiple mineral wool boards have the same tilt direction, or the tilt directions of two adjacent mineral wool boards along a preset direction are opposite.

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