Noise reduction wallboard for factory building

Abstract

A noise reduction wallboard for a factory building belongs to the field of general building construction and comprises a shell, the shell is of a cuboid structure, a plurality of cracks are formed in the front side face of the shell at equal intervals in an array mode, the upper end and the lower end of the shell are open, an upper cover is arranged at the upper end of the shell, a lower cover is arranged at the lower end of the shell, and a sound insulation box is arranged in the shell. The sound insulation box is provided with a plurality of concave lining plates in an array mode, a pair of L-shaped lining plates is arranged on each of the two sides of the sound insulation box, the sound insulation box is provided with inclined strips, and the inclined strips and the cracks are located on the same side. The noise reduction effect is remarkably improved, and the impact resistance of the wallboard is remarkably improved through the iron shell, the concave lining plate, the L-shaped lining plate and the like. Plastic which is not prone to burning and not prone to fuming during burning is arranged to serve as a preparation material of the sound insulation box, so that the fireproof performance is improved, and fire spreading can be isolated to a certain degree through the fireproof balls.

Description

Technical Field

[0001] The present invention relates to the technical field of general building structures, and particularly to a noise reduction wall panel for factory buildings. Background Art

[0002] In recent years, with the acceleration of the industrialization process, the noise pollution in factory buildings has become an important issue affecting employees' health and restricting the sustainable development of enterprises. Long-term exposure to a high-noise environment (especially above 85 dB) can lead to occupational diseases such as hearing damage, cardiovascular diseases, and nervous system disorders. To meet the requirements of regulations such as the "Industrial Enterprises' Factory Boundary Environmental Noise Emission Standard" (GB 12348-2008), the following noise reduction measures are commonly adopted in current industrial factories: First, source control: preferentially select low-noise equipment (such as low-noise fans, elevators, etc.) to reduce noise generation at the source. Second, equipment modification: suppress vibration noise by installing sound insulation enclosures, mufflers (such as exhaust pipe mufflers), or using shock absorbers and damping materials. Third, propagation blocking: set up noise reduction wall panels composed of sound-absorbing materials to form a physical sound insulation barrier.

[0003] However, the key performance defects of existing noise reduction wall panels significantly limit their actual application effects, specifically manifested as follows: First, the sound insulation efficiency is insufficient. Traditional sound-absorbing materials (such as glass fiber cotton, polyurethane foam) have insufficient blocking efficiency for medium and high-frequency noises (>50 dB), and it is particularly difficult to deal with high-intensity pulsed noises generated by equipment such as air compressors and punching presses. Second, the durability is poor. The materials are prone to aging and hardening due to temperature and humidity changes and mechanical stress, resulting in an absorption coefficient attenuation rate of up to 30%-50% during the service life. Third, the safety risks are prominent. Most sound-absorbing materials have a fire resistance rating lower than Class A, and toxic gases are released during combustion, making it difficult to meet the fire protection requirements for industrial factories in the "Code for Fire Protection Design of Buildings" (GB 50016). Finally, the impact resistance is weak. The existing wall panel structure has low strength and is easily damaged and deformed after being collided by forklifts or impacted by materials, resulting in high maintenance costs.

[0004] The above defects make it difficult for existing noise reduction wall panels to achieve long-term and safe noise control in complex industrial scenarios, and there is an urgent need to develop new noise reduction materials and structural design solutions with high sound insulation performance, durability, and safety. Summary of the Invention

[0005] The present invention provides a noise reduction wall panel for factory buildings to solve the above deficiencies in the prior art, and solves the problems of the currently used noise reduction wall panels having weak impact resistance, easy aging, and poor sound insulation effect, and has strong practicability.

[0006] To achieve the object of the present invention, the following technologies are proposed: A noise reduction wall panel for a factory building, comprising a housing. The housing has a cuboid structure, and a plurality of cracks are arranged in an equally spaced array on the front side of the housing. The width of the cracks is 0.1 mm to 0.5 mm.

[0007] Further, a kit is welded to the right side of the housing, an insert is welded to the left side of the housing, a convex member is provided on the upper side of the housing, a concave member is provided on the lower side of the housing. A dovetail groove is formed in the kit by inward depression, a dovetail head is formed on the insert by outward protrusion, an isosceles trapezoidal shell is formed on the convex member by outward protrusion, and an isosceles trapezoidal groove is formed in the concave member by inward depression.

[0008] Further, the upper and lower ends of the housing are open. An upper cover is provided at the upper end of the housing, and a lower cover is provided at the lower end of the housing. A sound insulation box is provided inside the housing, and the sound insulation box is located between the upper cover and the lower cover. A plurality of concave liners are arranged in an array from left to right in the sound insulation box. A pair of L-shaped liners are respectively provided on the left and right sides of the sound insulation box. The concave liners and the L-shaped liners are both located inside the housing. Oblique strips are arranged in an array from top to bottom on the front side of the sound insulation box. The length direction of the oblique strips can form an angle with the length direction of the cracks or can be parallel to the length direction of the cracks, and the oblique strips and the cracks are located on the same side.

[0009] Further, a plurality of inclined notches are formed in the outer side of one of the vertical sections of the concave liner by opening. The outer ends of the inclined notches are inclined upward or downward. The oblique strips are inserted into the inclined notches. A plurality of kidney-shaped holes are evenly distributed on the concave liner. The kidney-shaped holes on the vertical section of the concave liner are arranged vertically, and the kidney-shaped holes on the horizontal section of the concave liner are arranged horizontally. A side card slot is formed in the inner side of the upper end of the vertical section of the concave liner by opening. A first inclined surface is formed on the inner side of the upper end of the vertical section of the concave liner, and the upper end of the first inclined surface extends outward or inward.

[0010] Further, a limiting notch is formed in the inner side end of the horizontal section of the L-shaped liner by opening. A plurality of strip-shaped holes are evenly distributed on the vertical section of the L-shaped liner. The length direction of the strip-shaped holes is parallel to the vertical direction. A second inclined surface is formed on the upper end of the vertical section of the L-shaped liner, and the upper end of the second inclined surface extends outward or inward. A end card slot is formed in the inner side of the upper end of the vertical section of the L-shaped liner by opening.

[0011] Further, a pair of parallel inner extending strips are welded to the upper wall of the lower cover. The inner extending strips penetrate through the lower end of the housing. A plurality of pairs of limiting angle plates are welded to the inner walls of the inner extending strips. The lower ends of the limiting angle plates are welded to the upper wall of the lower cover. The lower ends of the concave liners are inserted between every two pairs of limiting angle plates. A connecting rod is passed through the limiting angle plates on the same side. The connecting rod passes through the lower ends of the concave liners. Nuts are respectively connected to both ends of the connecting rod by threads. L-shaped buckle plates are respectively welded to both ends of the upper wall of the lower cover. The outer ends of the horizontal sections of the L-shaped buckle plates are inserted into the limiting notches.

[0012] Further, inclined partitions are arrayed at equal intervals from left to right inside the sound insulation box. The inclined partitions divide the interior of the sound insulation box into multiple sound insulation cavities. A plurality of support plates are provided between adjacent two inclined partitions. The support plates are provided with a plurality of inner micropores. The support plates divide each sound insulation cavity into a pair of sound absorption chambers. A plurality of groups of outer micropores are formed on the front side wall of the sound insulation box. Each group of outer micropores communicates with each front-side sound absorption chamber. Each group of inner micropores communicates with each rear-side sound absorption chamber. The diameters of the inner micropores and the outer micropores are from 0.1 mm to 0.5 mm. A plurality of spherical balls are filled in the sound absorption chambers. The diameters of the spherical balls are larger than the diameters of the inner micropores and the outer micropores. The upper end of the sound insulation box is open. An inner ring is formed inside the opening end of the sound insulation box. There is a gap between the lower wall of the inner ring and the upper ends of the inclined partitions. A plurality of connecting platforms are formed on the inner wall of the inner ring. An inserting ring is formed on the upper wall of the inner ring. The outer wall of the inserting ring is of an inclined structure, and the upper end of the outer wall of the inserting ring extends inwardly. An inner inserting block is inserted into the inner ring. A sealing cover is provided at the upper end of the inner inserting block. A ring groove is formed on the lower wall of the sealing cover. The inserting ring is inserted into the ring groove. A conical ring is formed on the outer periphery of the bottom of the ring groove. The inclined surface of the conical ring abuts against the outer wall of the inserting ring. A plurality of embedded openings are formed on the inner inserting block. Counterbored holes are formed at the bottoms of the embedded openings. The connecting platforms are inserted into the embedded openings. Fixing screws are inserted through the counterbored holes. The lower ends of the fixing screws are threadedly connected to the connecting platforms.

[0013] Further, a plurality of side support plates are welded to both sides of the lower wall of the upper cover. The lower ends of the side support plates are formed with a third inclined surface, and the third inclined surface closely adheres to the first inclined surface. A plurality of end support plates are welded to both ends of the lower wall of the upper cover. The lower ends of the end support plates are formed with a fourth inclined surface, and the fourth inclined surface closely adheres to the second inclined surface.

[0014] Furthermore, a connecting mechanism is provided on the lower side of the upper cover. The connecting mechanism includes a transverse plate welded to the lower wall of the upper cover through a plurality of welding vertical plates. A plurality of outer extension arms are formed on both sides of the transverse plate along its length direction. A plurality of strip-shaped guide holes are formed in the outer extension arms. Waist-shaped guide holes are respectively formed at both ends of the transverse plate in its length direction. The length direction of the waist-shaped guide holes is perpendicular to the length direction of the strip-shaped guide holes, and the length direction of the waist-shaped guide holes is parallel to the length direction of the transverse plate. At least one pair of limit screws is inserted into each waist-shaped guide hole. The lower ends of the limit screws at the same end are threadedly connected with end clamping plates. A pair of end grooves are formed at the outer ends of the end clamping plates. The upper end of the L-shaped lining plate is inserted into the end groove, and the end clamping plate is inserted into the end clamping groove. A guiding screw is movably arranged in the strip-shaped guide hole. The lower ends of the guiding screws on the same side are threadedly connected with side clamping plates. The side clamping groove is inserted into the side clamping plate. A side groove is formed on the outer side of the side clamping plate in an open manner. The upper end of the vertical section of the concave lining plate is inserted into the side groove. The two ends of the side clamping plate are bent into folded plates. The folded plates are located above the end clamping plates. Waist-shaped inclined holes are formed at the outer ends of the folded plates. The outer ends of the waist-shaped inclined holes extend inwardly in an inclined manner. Acting screws are inserted into the waist-shaped inclined holes. The lower ends of the acting screws at the same end are threadedly connected to the end clamping plates. A concave part is welded to the upper wall of the side clamping plate. An inner extension convex plate is welded to the inner wall of the concave part. A strip-shaped inclined hole is formed in the inner extension convex plate. There is an included angle between the length direction of the strip-shaped inclined hole and the vertical direction. A lead screw is rotatably arranged on the transverse plate. The upper end of the lead screw passes through the upper cover. The lower end of the lead screw is threadedly connected with a pair of restraint nuts. The restraint nuts are located on the upper and lower sides of the transverse plate. A moving concave part is threadedly connected to the lead screw. The two ends of the moving concave part are threadedly connected with support rods. The outer ends of the support rods are inserted into the strip-shaped inclined holes. Two pairs of limit vertical plates are welded to the transverse plate. Each pair of limit vertical plates is located outside the inner extension convex plate.

[0015] The advantages of the above technical solution are as follows: In the present invention, the noise is first diffracted through the cracks, thereby consuming most of the energy of the noise entering the housing, and thus weakening its ability to continue spreading outward. Then, the noise entering the housing will be reflected by the inclined strips, so that it returns to the sound source. During the return process, phase interference will be formed, thereby weakening the noise for the second time. At the same time, part of the noise entering between the inclined strips will also be diffracted. The diffracted noise will diffract into the sound insulation box through the outer micropores again. When these noises that have undergone multiple diffractions contact the spherical surfaces of numerous spheres, the phenomena of noise reflection and phase interference will occur. In addition, when these noises pass through the gaps between the spheres, diffraction phenomena will occur. Finally, part of the noise will pass through the inner micropores and continue to diffract, reflect, and form phase interference, thereby achieving the purpose of noise reduction. In this way, when noise is emitted from the sound source, it will undergo multiple diffractions to greatly weaken the noise's ability to penetrate the wall, and noise reduction is achieved through the complementary methods of reflection and phase interference.

[0016] The present invention significantly improves the impact resistance of the wall panel through an iron shell, a concave liner, an L-shaped liner, etc.

[0017] The present invention uses a plastic that is not easily combustible and does not easily emit smoke when burning as the material for preparing the sound insulation box to improve the fire resistance performance. And to a certain extent, the spread of fire can be isolated by the fireproof balls.

[0018] The main noise reduction components of the present invention are iron products treated with anti-corrosion, plastics with excellent anti-aging performance, and concrete that can remain effective for a long time, etc., thereby extending its service life. Description of the Drawings

[0019] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings.

[0020] Figure 1 Shows the three-dimensional structure diagram of the first perspective of the noise reduction wall panel for the factory building.

[0021] Figure 2 Shows the three-dimensional structure diagram of the second perspective of one of the embodiments.

[0022] Figure 3 Shows the three-dimensional structure diagram of the shell, the upper cover, and the lower cover.

[0023] Figure 4 Shows the three-dimensional structure diagram inside the shell.

[0024] Figure 5 Shows the connection schematic diagram of the concave liner, the L-shaped liner, and the lower cover.

[0025] Figure 6 Shows the connection schematic diagram of the concave liner, the L-shaped liner, and the sound insulation box.

[0026] Figure 7 Shows the three-dimensional structure diagram inside the sound insulation box.

[0027] Figure 8 Shows the three-dimensional structure diagram of the sealing cover.

[0028] Figure 9 Shows the three-dimensional structure diagram of the connection mechanism and the upper cover.

[0029] Figure 10 Shows the three-dimensional structure diagram of the connection mechanism.

[0030] Description of the Reference Numerals: Outer shell 1, crack 10, upper cover 11, lower cover 12, inner extension strip 120, limit angle plate 121, connecting rod 122, L-shaped buckle plate 123, kit 2, dovetail groove 20, insert 3, dovetail head 30, convex part 4, isosceles trapezoidal shell 40, concave part 5, isosceles trapezoidal groove 50, sound insulation box 6, limit convex part 600, concave kit 601, outer micropores 602, inclined partition 603, support plate 604, inner micropores 605, inner ring 606, connecting platform 607, inserting ring 608, sealing cover 609, inner insert block 610, inner embedding opening 611, ring groove 612, conical ring 613, counterbore 614, L-shaped lining plate 7, end card slot 71, second inclined surface 72, limit notch 73, strip-shaped hole 74, concave lining plate 8, kidney-shaped hole 80, inclined notch 81, inclined strip 82, side card slot 83, first inclined surface 84, connecting mechanism 9, lead screw 900, side support plate 901, third inclined surface 902, end support plate 903, fourth inclined surface 904, transverse plate 905, outer extension arm 906, strip-shaped guide hole 907, restraining nut 908, guiding screw 909, side clamping plate 910, side groove 911, folded plate 912, kidney-shaped inclined hole 913, acting screw 914, limit screw 915, end clamping plate 916, end groove 917, welding vertical plate 918, kidney-shaped guide hole 919, limit vertical plate 920, concave part 921, inner extension convex plate 922, strip-shaped inclined hole 923, support rod 924, moving concave part 925. Detailed implementation mode

[0031] As Figure 1 shown, a noise reduction wall panel for a factory building is arranged on the wall of the factory building. It includes an outer shell 1, and the outer shell 1 is in a cuboid structure. Among them, the surface formed by the length direction and the width direction of the outer shell 1 is the front side and the rear side, the surface formed by the length direction and the thickness direction of the outer shell 1 is the left side and the right side, and the surface formed by the width direction and the thickness direction of the outer shell 1 is the upper end surface and the lower end surface. The length dimension and the width dimension of the outer shell 1 are greater than the thickness dimension of the outer shell 1, and the length dimension and the width dimension of the outer shell 1 are equal, or the length dimension of the outer shell 1 is greater than the width dimension of the outer shell 1. A plurality of cracks 10 are arranged at equal intervals in the front side of the outer shell 1, and the width of the cracks 10 is 0.1 mm to 0.5 mm. When the sound waves generated by the noise generator in the factory building pass through the cracks 10, the sound waves will diffract, and the diffraction of the sound waves will consume a large amount of its energy, thereby weakening the ability of the sound waves to continue to propagate outward.

[0032] As Figure 1 and Figure 2As shown in the figure, a kit 2 is welded to the right side of the outer shell 1, an insert 3 is welded to the left side of the outer shell 1, a convex part 4 is provided on the upper side of the outer shell 1, a concave part 5 is provided on the lower side of the outer shell 1. A dovetail groove 20 is formed in the kit 2 in a recessed manner inward, a dovetail head 30 is formed on the insert 3 in a protruding manner outward, an isosceles trapezoidal shell 40 is formed on the convex part 4 in a protruding manner outward, and an isosceles trapezoidal groove 50 is formed in the concave part 5 in a recessed manner inward. When connecting outer shells 1 around a single outer shell 1, for the convenience of description, this outer shell 1 is called the middle outer shell 1, the outer shell 1 located at the upper end is called the first outer shell 1, the outer shell 1 located at the lower end is called the second outer shell 1, the outer shell 1 located on the left side is called the third outer shell 1, and the outer shell 1 located on the right side is called the fourth outer shell 1. When fixing, the isosceles trapezoidal shell 40 on the middle outer shell 1 is inserted into the isosceles trapezoidal groove 50 of the first outer shell 1, the isosceles trapezoidal shell 40 of the second outer shell 1 is inserted into the isosceles trapezoidal groove 50 of the middle outer shell 1, the dovetail head 30 on the middle outer shell 1 is inserted into the dovetail groove 20 of the third outer shell 1, and the dovetail head 30 of the fourth outer shell 1 is inserted into the dovetail groove 20 on the middle outer shell 1.

[0033] As Figure 3 and Figure 4 As shown in the figure, both the upper and lower ends of the outer shell 1 are open. An upper cover 11 is provided at the upper end of the outer shell 1, a lower cover 12 is provided at the lower end of the outer shell 1. A sound insulation box 6 is provided inside the outer shell 1. The sound insulation box 6 is located between the upper cover 11 and the lower cover 12. A plurality of concave liners 8 are arranged in an array from left to right in the sound insulation box 6. A pair of L-shaped liners 7 are respectively provided on the left and right sides of the sound insulation box 6. The concave liners 8 and the L-shaped liners 7 are both located inside the outer shell 1. The concave liners 8 and the L-shaped liners 7 play a role in supporting and protecting the sound insulation box 6. And when the outer shell 1 is subjected to an impact, it can prevent the outer shell 1 from deforming and causing damage to the sound insulation box. Oblique strips 82 are arranged in an array from top to bottom on the front side of the sound insulation box 6. The oblique strips 82 and the cracks 10 are located on the same side. The oblique strips 82 are arranged horizontally, and there is a one-to-one correspondence between the oblique strips 82 and the cracks 10. Their existence can not only block dust, but also when the energy of the sound wave of the noise is reduced through the cracks 10 and the sound wave enters the outer shell 1, the sound wave will be reflected by the oblique strips 82 and diffracted again by the oblique strips 82. Through two large-scale diffractions, the energy of the sound wave will be further consumed, thereby reducing the propagation ability of the noise. Among them, the outer shell 1, the concave liners 8, the L-shaped liners 7, the upper cover 11 and the lower cover 12 are all made of iron products, so as to improve the strength of the wall panel and provide a protective barrier for the sound insulation box 6. The sound insulation box 6 is made of polyvinyl chloride plastic containing ammonium octamolybdate. The selected material can improve the flame retardancy of the sound insulation box 6 and the smoke generation amount during combustion is less. In addition, using this material is convenient for the molding and processing of the sound insulation box 6 and reduces the weight of the entire wall panel at the same time.

[0034] As Figure 4 and Figure 5As shown, a plurality of inclined notches 81 are formed on the outer side of one of the vertical sections of the concave liner 8 with an open end. The outer ends of the inclined notches 81 are inclined upward or downward. The inclined bars 82 are inserted into the inclined notches 81 to fix the inclined bars 82. At the same time, the inclined bars 82 also play a role in fixing between the concave liners 8, and the inclined bars 82 are spot-welded to the concave liners 8. A plurality of waist-shaped holes 80 are evenly distributed on the concave liners 8. The waist-shaped holes 80 on the vertical sections of the concave liners 8 are arranged vertically, and the waist-shaped holes 80 on the horizontal sections of the concave liners 8 are arranged horizontally. When the wall panel is impacted and the outer shell 1 is deformed, the waist-shaped holes 80 can absorb the energy during impact, thereby effectively protecting the sound insulation box 6. A side card slot 83 is formed on the inner side of the upper end of the vertical section of the concave liner 8 with an open end. A first inclined surface 84 is formed on the inner side of the upper end of the vertical section of the concave liner 8, and the upper end of the first inclined surface 84 extends obliquely outward or inward.

[0035] As Figure 4 and Figure 6 shown, a limiting notch 73 is formed on the inner side of the horizontal section of the L-shaped liner 7 with an open end. A plurality of strip-shaped holes 74 are evenly distributed on the vertical section of the L-shaped liner 7. The length direction of the strip-shaped holes 74 is parallel to the vertical direction. The strip-shaped holes 74 further improve the protection effect on the sound insulation box 6. A second inclined surface 72 is formed on the upper end of the vertical section of the L-shaped liner 7, and the upper end of the second inclined surface 72 extends obliquely outward or inward. A terminal card slot 71 is formed on the inner side of the upper end of the vertical section of the L-shaped liner 7 with an open end.

[0036] As Figure 4 and Figure 5 shown, a pair of parallel inner extension bars 120 are welded to the upper wall of the lower cover 12. The inner extension bars 120 pass through the lower end of the outer shell 1. A plurality of pairs of limiting angle plates 121 are welded to the inner wall of the inner extension bars 120. The lower ends of the limiting angle plates 121 are welded to the upper wall of the lower cover 12. The limiting angle plates 121 play a role in strengthening and fixing the inner extension bars 120, and the inner extension bars 120 are used to improve the limiting effect between the lower cover 12 and the outer shell 1. The lower end of the concave liner 8 is inserted between every two pairs of limiting angle plates 121. A connecting rod 122 is inserted through the limiting angle plates 121 on the same side. The connecting rod 122 passes through the lower end of the concave liner 8. Nuts are respectively connected to both ends of the connecting rod 122 by threads. L-shaped buckle plates 123 are respectively welded to both ends of the upper wall of the lower cover 12. The outer end of the horizontal section of the L-shaped buckle plate 123 is inserted into the limiting notch 73.

[0037] As Figure 4 and Figure 6As shown, multiple pairs of limiting convex portions 600 are formed on the bottom of the sound insulation box 6, the horizontal section of the concave liner 8 is clamped between each pair of limiting convex portions 600, and a pair of concave kits 601 are respectively formed at both ends of the bottom of the sound insulation box 6, and the horizontal section of the L-shaped liner 7 is inserted into the concave kits 601. The limiting convex portions 600 and the concave kits 601 are used to improve the connection and limiting effect between the sound insulation box 6 and the L-shaped liner 7, and also facilitate the connection and installation operations of the sound insulation box 6, the L-shaped liner 7 and the concave liner 8.

[0038] As Figure 6 - Figure 7As shown in the figure, inclined partitions 603 are arrayed at equal intervals from left to right inside the sound insulation box 6. The inclined partitions 603 divide the interior of the sound insulation box 6 into multiple sound insulation cavities. A plurality of support plates 604 are provided between two adjacent inclined partitions 603. The inclined partitions 603 and the support plates 604 play a role in internal support for the sound insulation box 6 and enhancing the structural strength of the sound insulation box 6. A plurality of internal micro-holes 605 are formed in the support plates 604. The support plates 604 divide each sound insulation cavity into a pair of sound absorption chambers. A plurality of groups of external micro-holes 602 are formed in the front side wall of the sound insulation box 6. Each group of external micro-holes 602 communicates with each front-side sound absorption chamber. Each group of internal micro-holes 605 communicates with each rear-side sound absorption chamber. A plurality of spherical balls are filled in the sound absorption chambers. The diameter of the spherical balls is larger than the diameters of the internal micro-holes 605 and the external micro-holes 602 to prevent them from falling. Using spherical balls as fillers, when the noise energy is large, the noise can cause these spherical balls to have tiny vibrations, and the energy of the noise can be absorbed through the vibrations, so as to prevent the reduction of the noise reduction effect due to the vibration of the wallboard material. Specifically, the spherical balls are spherical granular materials prepared by mixing boiler ash, fly ash, slag, kaolin and Portland cement. Using this material can improve the strength of the wallboard and is convenient for granulation processing. In addition, this material has excellent fire resistance. When the spherical balls made of this material are filled into the sound absorption chambers, the gaps formed by their stacking will diffract the sound wave multiple times when the sound wave enters, and the spherical surface of the spherical balls themselves can reflect the sound wave at multiple angles. In this way, phase interference will occur between the diffracted sound wave and the reflected sound wave, or phase interference will occur between the sound waves reflected by different spherical balls. Therefore, the presence of the spherical balls will significantly improve the sound insulation and absorption effect of the sound insulation box 6 on noise. In addition, the sound wave diffracts from the crack 10 and then enters between the inclined strips 82, and then the sound wave will be reflected and partially diffracted again. And part of the sound wave, due to entering the cavity of the closed outer shell 1, is reflected multiple times and blocked by the concave liner 8, so that its propagation energy is exhausted. And part of the sound wave will diffract through the external micro-holes 602 into the front-side sound absorption chamber, weakening the propagation energy of the noise again. And the spherical balls that enter the front-side sound absorption chamber will mostly disappear in the front-side sound absorption chamber due to reflection and phase interference. And part of the noise will also diffract through the internal micro-holes 605 and enter the rear-side sound absorption chamber, and the spherical balls inside it will make the noise lose the ability to propagate outward. The upper end of the sound insulation box 6 is open. An inner ring 606 is formed inside the open end of the sound insulation box 6. There is a gap between the lower wall of the inner ring 606 and the upper end of the inclined partition 603. A plurality of connecting platforms 607 are formed on the inner wall of the inner ring 606. An insertion ring 608 is formed on the upper wall of the inner ring 606. The outer wall of the insertion ring 608 is of an inclined structure, and the upper end of the outer wall of the insertion ring 608 extends inwardly. As Figure 8As shown, an insert block 610 is inserted into the inner ring 606. A sealing cover 609 is provided at the upper end of the insert block 610. An annular groove 612 is formed in the lower wall of the sealing cover 609. The insertion ring 608 is inserted into the annular groove 612. A tapered ring 613 is formed on the outer periphery of the bottom of the annular groove 612. The inclined surface of the tapered ring 613 abuts against the outer wall of the insertion ring 608, thereby improving the sealing effect of the connection between the insertion ring 608 and the sealing cover 609, and thus improving the sound insulation effect. A plurality of embedded openings 611 are formed in the insert block 610. A counterbore 614 is formed at the bottom of the embedded opening 611. The connecting platform 607 is inserted into the embedded opening 611. A fixing screw is inserted through the counterbore 614, and the lower end of the fixing screw is threadedly connected to the connecting platform 607.

[0039] As Figure 4 , Figure 5 and Figure 9 - Figure 10 As shown, a plurality of side support plates 901 are welded to both sides of the lower wall of the upper cover 11. A third inclined surface 902 is formed at the lower end of the side support plate 901. A plurality of end support plates 903 are welded to both ends of the lower wall of the upper cover 11. A fourth inclined surface 904 is formed at the lower end of the end support plate 903. When the outer shell 1, the upper cover 11 and the lower cover 12 are fixed, the third inclined surface 902 closely abuts against the first inclined surface 84, and the fourth inclined surface 904 closely abuts against the second inclined surface 72, thereby fixing the upper ends of the concave liner 8 and the L-shaped liner 7.

[0040] As Figure 4 shown, a connection mechanism 9 is provided on the lower side of the upper cover 11. As Figure 9 and Figure 10As shown in the figure, the connecting mechanism 9 includes a transverse plate 905 welded to the lower wall of the upper cover 11 through a plurality of welding vertical plates 918. A plurality of outer extension arms 906 are formed on both sides of the transverse plate 905 along its length direction. A plurality of strip-shaped guide holes 907 are formed in the outer extension arms 906. Waist-shaped guide holes 919 are respectively formed at both ends of the transverse plate 905 in the length direction. The length direction of the waist-shaped guide holes 919 is perpendicular to the length direction of the strip-shaped guide holes 907, and the length direction of the waist-shaped guide holes 919 is parallel to the length direction of the transverse plate 905. At least one pair of limit screws 915 is inserted into each waist-shaped guide hole 919. The lower ends of the limit screws 915 at the same end are threadedly connected with end clamping plates 916. A pair of end grooves 917 are formed at the outer ends of the end clamping plates 916. The upper end of the L-shaped lining plate 7 is inserted into the end grooves 917, and the end clamping plate 916 is inserted into the end clamping slots 71. A guiding screw 909 is movably arranged in the strip-shaped guide hole 907. The lower ends of the guiding screws 909 on the same side are threadedly connected with side clamping plates 910. The side clamping slots 83 are inserted into the side clamping plates 910. Side grooves 911 are formed on the outer side of the side clamping plates 910 in an open manner. The upper end of the vertical section of the concave lining plate 8 is inserted into the side grooves 911. The two ends of the side clamping plates 910 are bent into folded plates 912. The folded plates 912 are located above the end clamping plates 916. Waist-shaped inclined holes 913 are formed at the outer ends of the folded plates 912. The outer ends of the waist-shaped inclined holes 913 extend inwardly in an inclined manner. Acting screws 914 are inserted into the waist-shaped inclined holes 913. The lower ends of the acting screws 914 at the same end are threadedly connected to the end clamping plates 916. A concave member 921 is welded to the upper wall of the side clamping plate 910. An inner extension convex plate 922 is welded to the inner wall of the concave member 921. A strip-shaped inclined hole 923 is formed in the inner extension convex plate 922. There is an included angle between the length direction of the strip-shaped inclined hole 923 and the vertical direction. A lead screw 900 is rotatably arranged on the transverse plate 905. The upper end of the lead screw 900 passes through the upper cover 11. The lower end of the lead screw 900 is threadedly connected with a pair of constraint nuts 908. The constraint nuts 908 are located on the upper and lower sides of the transverse plate 905. A moving concave member 925 is threadedly connected to the lead screw 900. The two ends of the moving concave member 925 are threadedly connected with support rods 924. The outer ends of the support rods 924 are inserted into the strip-shaped inclined holes 923. Two pairs of limit vertical plates 920 are welded to the transverse plate 905. Each pair of limit vertical plates 920 is located outside the inner extension convex plate 922.

[0041] When assembling this embodiment, first, the spherical balls are filled into each sound insulation chamber, and then the sealing cover 609 is covered on the opening end of the sound insulation box 6. When covering, the insertion ring 608 is inserted into the ring groove 612, and then it is fixed by fixing screws. After fixing, the upper surface of the sealing cover 609 is flush with the upper end surface of the sound insulation box 6.

[0042] Next, the concave liner 8 is sleeved on the sound insulation box 6. When sleeving, the horizontal section of the concave liner 8 needs to be clamped between each pair of limiting convex parts 600. After sleeving, the inclined strip 82 is inserted into the inclined notch 81, and the inclined strip 82 is fixed on the concave liner 8 by spot welding.

[0043] Then, the lower end of the concave liner 8 is inserted into each group of limiting angle plates 121. At the same time, the connecting rod 122 is passed through the lower end of the concave liner 8, and both ends are fixed by nuts. In addition, the L-shaped liner 7 needs to be buckled on the left and right sides of the sound insulation box 6, and the horizontal section of the L-shaped liner 7 is inserted into the concave sleeve 601. During the buckling process, the outer end of the horizontal section of the L-shaped buckle plate 123 is inserted into the limiting notch 73. In this way, the connection and fixation of the lower cover 12 and the sound insulation box 6 are completed.

[0044] Then, the outer shell 1 is sleeved on the sound insulation box 6, and the lower end of the outer shell 1 abuts against the lower wall of the lower cover 12. When sleeving, the third inclined surface 902 is closely attached to the first inclined surface 84, and the fourth inclined surface 904 is closely attached to the second inclined surface 72. If the upper ends of the first inclined surface 84 and the second inclined surface 72 extend inwardly, then as the upper cover 11 is sleeved, it can be ensured that the concave liner 8 and the L-shaped liner 7 are closely attached to the sound insulation box 6. If the upper ends of the first inclined surface 84 and the second inclined surface 72 extend outwardly, then the concave liner 8 and the L-shaped liner 7 can be closely attached to the inner wall of the outer shell 1. Therefore, regardless of the structure of the first inclined surface 84 and the second inclined surface 72, the stability after fixation can be improved.

[0045] Next, the upper cover 11 is covered on the upper end of the outer shell 1. When covering, the lower wall of the upper cover 11 needs to act on the upper end of the outer shell 1. Then, the screw rod 900 is rotated through the hexagonal groove provided at the outer end of the screw rod 900. The rotation of the screw rod 900 will drive the moving concave part 925 to move downward. When the moving concave part 925 moves downward, it will drive the supporting rod 924 thereon to move downward. As the supporting rod 924 moves downward, it will act on the strip-shaped inclined hole 923, thereby causing the concave part 921 and the side clamping plate 910 where it is located to move outward, and the side groove 911 of the side clamping plate 910 is inserted into the side clamping groove 83 of the concave liner 8. When the side clamping plate 910 moves outward, it can act on the acting screw 914 through the kidney-shaped inclined hole 913 thereon, thereby causing the end clamping plate 916 to move outward at the same time, and the end groove 917 of the end clamping plate 916 is inserted into the end clamping groove 71 of the L-shaped liner 7. In this way, the connection and fixation of the upper cover 11, the outer shell 1, the lower cover 12 and the sound insulation box 6 can be quickly realized through one screw rod 900.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A noise reduction wall panel for a factory building, characterized in that, It includes a housing (1), the housing (1) has a cuboid structure, and a plurality of cracks (10) are arranged in an equidistant array on the front side of the housing (1); The upper and lower ends of the housing (1) are open. An upper cover (11) is provided at the upper end of the housing (1), and a lower cover (12) is provided at the lower end of the housing (1). A sound insulation box (6) is arranged inside the housing (1), and the sound insulation box (6) is located between the upper cover (11) and the lower cover (12); A plurality of inclined partition plates (603) are arranged in an equidistant array inside the sound insulation box (6). The inclined partition plates (603) divide the interior of the sound insulation box (6) into a plurality of sound insulation cavities. A plurality of support plates (604) are arranged between adjacent two inclined partition plates (603). A plurality of inner micropores (605) are formed in the support plates (604). The support plates (604) divide each sound insulation cavity into a pair of sound absorption chambers. A plurality of groups of outer micropores (602) are formed on the front side wall of the sound insulation box (6). Each group of outer micropores (602) communicates with each front-side sound absorption chamber. Each group of inner micropores (605) communicates with each rear-side sound absorption chamber. A plurality of spherical balls are filled in the sound absorption chambers. A sealing cover (609) is provided at the upper end of the sound insulation box (6).

2. The noise reduction wall panel for factory buildings according to claim 1, wherein, A kit (2) is welded to the right side of the housing (1), an insert (3) is welded to the left side of the housing (1), a convex part (4) is provided on the upper side of the housing (1), and a concave part (5) is provided on the lower side of the housing (1); A dovetail groove (20) is formed in the kit (2) by inward depression; A dovetail head (30) is formed on the insert (3) by outward protrusion; An isosceles trapezoidal shell (40) is formed on the convex part (4) by outward protrusion; An isosceles trapezoidal groove (50) is formed in the concave part (5) by inward depression.

3. The noise reduction wall panel for factory buildings according to claim 1, wherein A plurality of concave liners (8) are arranged in an array on the sound insulation box (6). A pair of L-shaped liners (7) are respectively arranged on both sides of the sound insulation box (6). The concave liners (8) and the L-shaped liners (7) are both located inside the housing (1). Oblique strips (82) are arranged in an array from top to bottom on the front side of the sound insulation box (6). The oblique strips (82) are on the same side as the cracks (10).

4. The noise reduction wall panel for factory buildings according to claim 3, characterized in that, A plurality of inclined notches (81) are formed in the outer side of one of the vertical sections of the concave liner (8) by opening. The oblique strips (82) are inserted into the inclined notches (81). A side card slot (83) is formed in the inner side of the upper end of the vertical section of the concave liner (8) by opening. A first inclined surface (84) is formed on the inner side of the upper end of the vertical section of the concave liner (8).

5. The noise reduction wall panel for factory buildings according to claim 4, wherein A plurality of waist-shaped holes (80) are evenly distributed on the concave liner (8). The waist-shaped holes (80) on the vertical section of the concave liner (8) are arranged vertically. The waist-shaped holes (80) on the horizontal section of the concave liner (8) are arranged horizontally.

6. The noise reduction wall panel for factory buildings according to claim 4, wherein A limiting notch (73) is formed in the inner side end of the horizontal section of the L-shaped liner (7) by opening. A plurality of strip-shaped holes (74) are evenly distributed on the vertical section of the L-shaped liner (7). The length direction of the strip-shaped holes (74) is parallel to the vertical direction. A second inclined surface (72) is formed at the upper end of the vertical section of the L-shaped liner (7). A end card slot (71) is formed in the inner side of the upper end of the vertical section of the L-shaped liner (7) by opening.

7. The noise reduction wall panel for factory buildings according to claim 6, wherein, A pair of parallel inner extension strips (120) are welded to the upper wall of the lower cover (12). The inner extension strips (120) pass through the lower end of the outer shell (1). Multiple pairs of limiting angle plates (121) are welded to the inner walls of the inner extension strips (120). The lower ends of the limiting angle plates (121) are welded to the upper wall of the lower cover (12). The lower end of the concave lining plate (8) is inserted between every two pairs of limiting angle plates (121). A connecting rod (122) is passed through the limiting angle plates (121) on the same side. The connecting rod (122) passes through the lower end of the concave lining plate (8). Nuts are respectively connected to both ends of the connecting rod (122) by threads. L-shaped clamping plates (123) are respectively welded to both ends of the upper wall of the lower cover (12). The outer ends of the horizontal sections of the L-shaped clamping plates (123) are inserted into the limiting notches (73).

8. The noise reduction wall panel for factory buildings according to claim 6, wherein, A plurality of side support plates (901) are welded to both sides of the lower wall of the upper cover (11). The lower ends of the side support plates (901) are formed with a third inclined surface (902). The third inclined surface (902) is closely attached to the first inclined surface (84). A plurality of end support plates (903) are welded to both ends of the lower wall of the upper cover (11). The lower ends of the end support plates (903) are formed with a fourth inclined surface (904). The fourth inclined surface (904) is closely attached to the second inclined surface (72).

9. The noise reduction wall panel for factory buildings according to claim 1, wherein An inner ring (606) is formed inside the sound insulation box (6). A plurality of connecting platforms (607) are formed on the inner wall of the inner ring (606). An insertion ring (608) is formed on the upper wall of the inner ring (606). The outer wall of the insertion ring (608) is of an inclined structure, and the upper end of the outer wall of the insertion ring (608) extends inwardly and obliquely. An inner insertion block (610) is inserted into the inner ring (606). The upper end of the inner insertion block (610) is arranged on the sealing cover (609). A ring groove (612) is formed on the lower wall of the sealing cover (609). The insertion ring (608) is inserted into the ring groove (612). A conical ring (613) is formed on the outer periphery of the bottom of the ring groove (612). The inclined surface of the conical ring (613) abuts against the outer wall of the insertion ring (608). A plurality of embedded openings (611) are formed on the inner insertion block (610). A counterbore (614) is formed at the bottom of the embedded opening (611). The connecting platform (607) is inserted into the embedded opening (611). A fixing screw is passed through the counterbore (614). The lower end of the fixing screw is connected to the connecting platform (607) by threads.

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