Prefabricated noise reduction device

Abstract

This utility model relates to the field of equipment noise reduction technology, and provides a prefabricated noise reduction device, including: a base plate with an air inlet; a first sound-absorbing part disposed on the upper surface of the base plate and forming an air inlet channel corresponding to the air inlet; a shell with one open side; the open side of the shell is disposed on the upper surface of the base plate, and the interior of the shell forms a receiving cavity for accommodating the equipment to be noise-reduced; an air outlet channel is formed on the side of the shell away from the base plate, and the air outlet channel communicates with the receiving cavity; and a second sound-absorbing part is disposed in the air outlet channel. The shell of this utility model can block some noise, and the first and second sound-absorbing parts can further absorb the noise emitted by the equipment to be noise-reduced; the device has an air inlet channel and an air outlet channel, thereby achieving effective noise reduction of the equipment under ventilated conditions and reducing the impact of equipment noise on residents at the construction site; at the same time, the main body of the device is prefabricated, which facilitates installation, disassembly, storage, and transportation.

Description

Technical Field

[0001] This utility model relates to the field of equipment noise reduction technology, and in particular to an assembled noise reduction device. Background Technology

[0002] Construction sites typically use small generators, air compressors, and other equipment. To minimize the impact on traffic, construction is often carried out at night. Since the existing equipment lacks additional noise reduction devices, and no additional noise reduction measures are usually taken for generators or air compressors during construction, these devices generate noise levels of over 75 dB when operating. After passing through the windows of nearby residential buildings, the noise can still reach over 50 dB indoors, severely affecting the rest of nearby residents. Utility Model Content

[0003] This utility model provides a prefabricated noise reduction device to solve the technical problem of the lack of noise reduction devices for equipment with high noise levels at construction sites, which causes noise to affect the rest of nearby residents.

[0004] This utility model provides a prefabricated noise reduction device, comprising: The base plate is equipped with air intake vents; The first sound-absorbing part is disposed on the upper surface of the base plate and has an air intake channel corresponding to the air intake hole; The housing has an opening on one side; the open side of the housing is located on the upper surface of the base plate, and the interior of the housing forms a receiving cavity for accommodating the equipment to be noise-reduced; An air outlet channel is formed on the side of the housing away from the bottom plate, and the air outlet channel is in communication with the receiving cavity; The second sound-absorbing part is disposed in the air outlet channel.

[0005] According to the present invention, a prefabricated noise reduction device is provided, the housing comprising: Multiple first plates are arranged to form a cylindrical structure; Multiple second plates are disposed on the side of the first plate away from the bottom plate, and the second plates are disposed in a one-to-one correspondence with the first plate. The multiple second plates enclose a variable diameter cylindrical structure that is gradually narrowed along a first direction. Multiple third plates are disposed on the side of the second plate away from the first plate, and the third plates are disposed in a one-to-one correspondence with the second plate, and the multiple third plates form a cylindrical structure. The second plate and the third plate together form the air outlet channel.

[0006] According to the assembled noise reduction device provided by this utility model, it further includes: The first connecting portion is disposed at the joint of the adjacent first plate, the joint of the adjacent second plate, and the joint of the adjacent third plate.

[0007] According to the assembled noise reduction device provided by this utility model, it further includes: The second connecting part is disposed at the joint between the first plate and the second plate, and at the joint between the second plate and the third plate.

[0008] According to the present invention, there is a prefabricated noise reduction device. The upper surface of the second connecting part is formed with a first annular groove for engaging with the side of the second plate near the first plate, or the side of the third plate near the second plate. The lower surface of the second connecting part is formed with a second annular groove for engaging with the side of the first plate near the second plate, or the side of the second plate near the third plate.

[0009] According to the assembled noise reduction device provided by this utility model, it also includes A buffer section is disposed on the side of the first plate near the bottom plate; a third annular groove is formed on the upper surface of the buffer section for cooperating with the first plate. A fixing part is disposed on the side of the third plate away from the second plate; a fourth annular groove is formed on the lower surface of the fixing part for cooperating with the third plate.

[0010] According to the assembled noise reduction device provided by this utility model, the second sound-absorbing part includes: At least two fixing plates are spaced apart along the second direction on the side of the fixing part away from the third plate; A sound-absorbing wedge is connected to the fixed plate, and the tip of the sound-absorbing wedge extends into the air outlet channel.

[0011] According to the present invention, a prefabricated noise reduction device is provided, the housing comprising: The first structural layer constitutes the basic structure of the shell; The second structural layer is superimposed on the side of the first structural layer near the noise reduction device, and is used for sound absorption and noise reduction. The third structural layer is superimposed on the second structural layer on the side closest to the noise reduction device.

[0012] According to the assembled noise reduction device provided by this utility model, it further includes: The third sound-absorbing part is disposed on the inner wall surface of the receiving cavity.

[0013] According to the assembled noise reduction device provided by this utility model, it further includes: Wheels are disposed on the side of the base plate; A handle is provided on the upper surface of the base plate and is spaced apart from the housing; The wheel is a flexible wheel.

[0014] The above-mentioned one or more technical solutions provided by this utility model have at least the following beneficial technical effects: the outer casing of the noise reduction equipment is provided with a shell, which can block part of the noise; a first sound-absorbing part is provided on the bottom plate, and a second sound-absorbing part is provided in the air outlet channel of the shell, which can further absorb the noise emitted by the noise reduction equipment; the assembled noise reduction device is provided with an air inlet channel and an air outlet channel, thereby realizing effective noise reduction of the noise reduction equipment under ventilated conditions and reducing the impact of equipment noise on residents at the construction site; at the same time, the main body of the device is an assembled design, which is convenient for installation, disassembly, storage and transportation. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is one of the schematic diagrams of the assembled noise reduction device provided in the embodiments of this utility model; Figure 2 This is the second schematic diagram of the assembled noise reduction device provided in this embodiment of the utility model; Figure 3 This is a side sectional view of the base plate and the first sound-absorbing part provided in the embodiment of this utility model; Figure 4 This is a schematic diagram of the first connecting part provided in an embodiment of the present utility model; Figure 5 This is one of the top views of the second connecting part provided in the embodiment of this utility model; Figure 6 This is one of the side sectional views of the second connecting portion provided in the embodiments of this utility model; Figure 7 This is a second top view of the second connecting part provided in this embodiment of the utility model; Figure 8 This is a second side sectional view of the second connecting part provided in this embodiment of the utility model; Figure 9 This is a top view of the buffer section provided in an embodiment of the present utility model; Figure 10 This is a side sectional view of the buffer section provided in an embodiment of the present invention; Figure 11 This is a top view of the fixing part provided in an embodiment of the present utility model; Figure 12 This is a side sectional view of the fixing part provided in an embodiment of the present utility model; Figure 13 This is a schematic diagram showing the position of the second sound-absorbing part provided in this embodiment of the utility model; Figure 14 This is a side view of the second sound-absorbing part provided in an embodiment of the present invention; Figure 15 This is a front view of the second sound-absorbing part provided in an embodiment of this utility model.

[0017] Figure label: 1. Base plate; 11. Air inlet; 2. First sound-absorbing section; 3. Shell; 31. First plate; 311. First structural layer; 312. Second structural layer; 313. Third structural layer; 32. Second plate; 33. Third plate; 4. Second sound-absorbing section; 41. Fixing plate; 42. Sound-absorbing wedge; 5. First connecting part; 6. Second connecting part; 61. First annular groove; 62. Second annular groove; 7. Buffer section; 71. Third ring groove; 8. Fixing section; 81. Fourth ring groove; 9. Third sound-absorbing section; 101. Wheel body; 102. Handle. Detailed Implementation

[0018] 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.

[0019] The following is combined Figures 1-15 This invention describes an assembled noise reduction device according to an embodiment of the present invention.

[0020] like Figure 1-3 As shown, this utility model embodiment provides an assembled noise reduction device, including a base plate 1, a first sound-absorbing part 2, a housing 3, and a second sound-absorbing part 4; the base plate 1 is provided with an air inlet 11; the first sound-absorbing part 2 is provided on the upper surface of the base plate 1, forming an air inlet channel corresponding to the air inlet 11; the housing 3 has an open side; the open side of the housing 3 is provided on the upper surface of the base plate 1, and the interior of the housing 3 forms a receiving cavity for accommodating the equipment to be noise-reduced; an air outlet channel is formed on the side of the housing 3 away from the base plate 1, and the air outlet channel communicates with the receiving cavity; the second sound-absorbing part 4 is provided in the air outlet channel.

[0021] Specifically, the outer casing of the noise reduction equipment is equipped with a shell 3, which can block some noise. A first sound-absorbing part is set on the base plate 1, and a second sound-absorbing part 4 is set in the air outlet channel of the shell 3, which can further absorb the noise emitted by the noise reduction equipment. The prefabricated noise reduction device is equipped with an air inlet channel and an air outlet channel, thereby realizing effective noise reduction of the noise reduction equipment under ventilated conditions and reducing the impact of equipment noise on residents at the construction site. At the same time, the main body of the device is prefabricated, which is convenient for installation, disassembly, storage and transportation.

[0022] In some possible implementations, the base plate 1 is made of steel, and multiple air inlets 11 are provided for cooling and ventilation of the equipment to be noise-reduced; the first sound-absorbing part 2 is made of sound-absorbing cotton pad, which can be adhered to the upper surface of the base plate 1 to absorb the noise emitted downward by the equipment; wherein, the first sound-absorbing part can be an integral structure laid on the upper surface of the base plate 1, and an air intake channel corresponding to the air inlet 11 is opened on the first sound-absorbing part; the first sound-absorbing part can also be modularly installed on the upper surface of the base plate 1, which needs to avoid the position of the air inlet 11 to form an air intake channel to ensure that air enters the receiving cavity smoothly.

[0023] In some possible implementations, the noise reduction device can be a small power generation device, an air compressor, etc.; for example, the small power generation device can be a diesel generator with a volume of less than 1 cubic meter, an air compressor, or other types of devices that need noise reduction, which are not limited here.

[0024] It should be understood that when the noise reduction device is placed in the housing 3, the noise it emits can be absorbed by at least the first sound-absorbing part 2 and the second sound-absorbing part 4 of the assembled noise reduction device, and the noise escaping from the housing 3 is greatly reduced, thereby avoiding adverse effects on the rest of nearby residents. Considering the space occupied by the noise reduction device in the housing and the ventilation effect, ventilation equipment such as fans can be installed in the housing to further accelerate air circulation and improve heat dissipation.

[0025] like Figure 1 As shown, according to an embodiment of the present invention, a prefabricated noise reduction device is provided. The housing 3 includes: a plurality of first plates 31, which together form a cylindrical structure; a plurality of second plates 32, which are disposed on the side of the first plates 31 away from the bottom plate 1, and the second plates 32 are arranged in a one-to-one correspondence with the first plates 31, and the plurality of second plates 32 together form a variable diameter cylindrical structure that gradually narrows along a first direction; a plurality of third plates 33, which are disposed on the side of the second plates 32 away from the first plates 31, and the third plates 33 are arranged in a one-to-one correspondence with the second plates 32, and the plurality of third plates 33 together form a cylindrical structure; wherein, the second plates 32 and the third plates 33 form an air outlet channel.

[0026] Specifically, the first direction is the vertical direction or the height direction of the first plate 31.

[0027] It is understood that the cylindrical structure formed by the aforementioned plates can be a square tube, a cylindrical tube, etc., and the specific shape is not limited. Its shape can be adapted to the shape of the noise reduction equipment. The variable diameter cylindrical structure enclosed by the second plate 32 is the transition area between the first plate 31 and the second plate 32. The variable diameter structure can guide the air in the cavity, facilitate air flow, and improve the cooling effect of the noise reduction equipment. In addition, the shell 3 adopts a prefabricated design. After construction, the main parts such as the shell 3 can be disassembled into components that are easy to transport and store in a warehouse. The plates can be made into standardized components. According to the volume of the noise reduction equipment, the corresponding size and specifications of the plates can be selected for on-site assembly, which is highly flexible and has a wide range of applications.

[0028] like Figure 1 and Figure 4 As shown, according to an embodiment of the present invention, a prefabricated noise reduction device is provided, which further includes: a first connecting part 5, disposed at the joint of adjacent first plates 31, the joint of adjacent second plates 32 and the joint of adjacent third plates 33.

[0029] In one specific embodiment of this utility model, the first connecting part 5 is made of rubber, which has good sealing and sound insulation effects; the first connecting part 5 includes two hollow structures arranged at an angle, and adjacent plates are inserted into the hollow structures to achieve connection; or, the first connecting part 5 includes two protrusions arranged at an angle, and the corresponding side of the plate forms a groove, and the protrusions and grooves cooperate with each other to achieve connection.

[0030] In some other embodiments, complementary mortise and tenon joint structures can be provided between adjacent first plates 31, between adjacent second plates 32, and on the sides of adjacent third plates 33, so as to realize the rapid splicing and fixing of adjacent plates.

[0031] like Figure 1 , Figure 5-8 As shown, according to an embodiment of the present invention, a prefabricated noise reduction device is provided, which further includes: The second connecting part 6 is provided at the joint between the first plate 31 and the second plate 32, and at the joint between the second plate 32 and the third plate 33.

[0032] In some possible implementations, the second connecting part 6 is made of rubber, which serves to seal and insulate against sound.

[0033] like Figure 5-8As shown, according to an embodiment of the present invention, an assembled noise reduction device is provided. The upper surface of the second connecting part 6 is formed with a first annular groove 61 for engaging with the side of the second plate 32 near the first plate 31, or the side of the third plate 33 near the second plate 32; the lower surface of the second connecting part 6 is formed with a second annular groove 62 for engaging with the side of the first plate 31 near the second plate 32, or the side of the second plate 32 near the third plate 33.

[0034] It is understandable that, since the second plate 32 forms a cylindrical structure with a variable diameter, the second plate 32 forms an angle with the first plate 31 and the third plate 33. Therefore, the first annular groove 61 and the second annular groove 62 connected to the second plate 32 are both inclined to the side away from the geometric center of the second connecting part 6, so as to adapt to the inclination angle of the second plate 32.

[0035] In some other embodiments, a mortise and tenon joint structure with complementary structure can be provided between the first plate 31 and the second plate 32, as well as between the second plate 32 and the third plate 33, so as to realize the rapid splicing and fixing of different plates.

[0036] like Figure 9-12 As shown, according to an embodiment of the present invention, a prefabricated noise reduction device is provided, which also includes... A buffer section 7 is disposed on the side of the first plate 31 near the bottom plate 1; a third annular groove 71 is formed on the upper surface of the buffer section 7 for engaging with the first plate 31. The fixing part 8 is provided on the side of the third plate 33 away from the second plate 32; a fourth annular groove 81 is formed on the lower surface of the fixing part 8 for cooperating with the third plate 33.

[0037] In some possible implementations, both the buffer part 7 and the fixing part 8 are made of rubber; the use of rubber in the buffer part 7 can provide buffering and sealing between the housing 3 and the base plate 1, and also has a noise reduction effect; the fixing part 8 can effectively fix the air outlet channel.

[0038] like Figure 13-15 As shown, according to an embodiment of the present invention, a prefabricated noise reduction device is provided. The second sound-absorbing part 4 includes at least two fixing plates 41 and two sound-absorbing wedges 42. The at least two fixing plates 41 are spaced apart along the second direction on the side of the fixing part 8 away from the third plate 33. The sound-absorbing wedges 42 are connected to the fixing plates 41, and the tips of the sound-absorbing wedges 42 extend into the air outlet channel.

[0039] In some possible implementations, the upper surface of the fixing part 8 is provided with a groove, and the fixing plate 41 is snapped into the groove to achieve installation; the sound-absorbing wedge 42 is made of glass wool, and the tip of the sound-absorbing wedge 42 faces the noise source, which can selectively reduce the sensitive spectrum noise of the equipment.

[0040] Specifically, the second direction is either horizontal or perpendicular to the direction of air outlet in the air outlet channel.

[0041] According to an embodiment of the present invention, a prefabricated noise reduction device is provided. The housing 3 includes a first structural layer 311, a second structural layer 312, and a third structural layer 313. The first structural layer 311 constitutes the basic structure of the housing 3. The second structural layer 312 is superimposed on the side of the first structural layer 311 near the noise reduction device and is used for sound absorption and noise reduction. The third structural layer 313 is superimposed on the side of the second structural layer 312 near the noise reduction device.

[0042] It should be understood that the shell 3 includes, but is not limited to, a three-layer structure, and may also be a composite plate formed by stacking three or more layered structures.

[0043] In some possible implementations, the first structural layer 311 is a structural plate, the second structural layer 312 is a damping material, the damping material can reduce the propagation of sound waves and vibrations, and when sound waves or vibrations pass through the damping material, the energy will be consumed and weakened; the third structural layer 313 is a structural plate.

[0044] According to an embodiment of the present invention, a prefabricated noise reduction device further includes a third sound-absorbing part 9, which is disposed on the inner wall surface of the receiving cavity.

[0045] In some possible implementations, the third sound-absorbing part 9 uses a sound-absorbing cotton block, which is disposed on the inner wall surface of the receiving cavity, that is, the inner surface of the plate, and can absorb noise from the noise-reducing device inside the housing 3, thereby further improving the noise reduction effect.

[0046] like Figure 1-2 As shown, according to an embodiment of the present invention, an assembled noise reduction device is provided, which further includes: a wheel body 101 and a handle 102; the wheel body 101 is disposed on the side of the base plate 1; the handle 102 is disposed on the upper surface of the base plate 1 and is spaced apart from the housing 3; wherein, the wheel body 101 is a flexible wheel body 101.

[0047] In some possible implementations, the wheel 101 uses an inflatable rubber tire, which allows for appropriate adjustment of inflation pressure, reducing noise generated by equipment vibration, while also meeting the needs of moving the equipment as the construction position changes. The handle 102 is detachably connected to the base plate 1, with an assembly design that facilitates easy installation and removal of the handle 102. The handle 102 can also be hinged to the base plate 1 and equipped with a snap-locking structure. When the handle 102 is in use, it is rotated around the hinge point until it is perpendicular to the base plate 1, at which point the snap-locking structure locks the position of the handle 102. After use, the snap-locking structure can be released, allowing the handle 102 to rotate around the hinge point until it fits against the upper surface of the base plate 1, achieving folding and facilitating storage.

[0048] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0049] 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 the 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; and these 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 prefabricated noise reduction device, characterized in that, include: The base plate (1) is provided with an air inlet (11); The first sound-absorbing part (2) is disposed on the upper surface of the base plate (1) and has an air intake channel corresponding to the air intake hole (11); The housing (3) has an open side; the open side of the housing (3) is located on the upper surface of the base plate (1), and the interior of the housing (3) has a receiving cavity for accommodating the equipment to be noise-reduced; An air outlet channel is formed on the side of the housing (3) away from the bottom plate (1), and the air outlet channel is connected to the receiving cavity; The second sound-absorbing part (4) is disposed in the air outlet channel.

2. The assembled noise reduction device according to claim 1, characterized in that, The housing (3) includes: Multiple first plates (31) are arranged to form a cylindrical structure; Multiple second plates (32) are disposed on the side of the first plate (31) away from the bottom plate (1), and the second plates (32) are disposed in a one-to-one correspondence with the first plate (31). The multiple second plates (32) form a variable diameter cylindrical structure that is gradually narrowed along the first direction. Multiple third plates (33) are disposed on the side of the second plate (32) away from the first plate (31), and the third plates (33) are disposed in a one-to-one correspondence with the second plate (32), and the multiple third plates (33) form a cylindrical structure. The second plate (32) and the third plate (33) together form the air outlet channel.

3. The assembled noise reduction device according to claim 2, characterized in that, Also includes: The first connecting part (5) is provided at the joint of the adjacent first plate (31), the joint of the adjacent second plate (32) and the joint of the adjacent third plate (33).

4. The assembled noise reduction device according to claim 2, characterized in that, Also includes: The second connecting part (6) is provided at the joint between the first plate (31) and the second plate (32), and at the joint between the second plate (32) and the third plate (33).

5. The assembled noise reduction device according to claim 4, characterized in that, The upper surface of the second connecting part (6) is formed with a first annular groove (61) for engaging with the side of the second plate (32) near the first plate (31) or the side of the third plate (33) near the second plate (32). The lower surface of the second connecting part (6) is formed with a second annular groove (62) for engaging with the side of the first plate (31) near the second plate (32) or the side of the second plate (32) near the third plate (33).

6. The assembled noise reduction device according to claim 2, characterized in that, Also includes A buffer section (7) is disposed on the side of the first plate (31) near the bottom plate (1); a third annular groove (71) is formed on the upper surface of the buffer section (7) for cooperating with the first plate (31); A fixing part (8) is provided on the side of the third plate (33) away from the second plate (32); a fourth annular groove (81) is formed on the lower surface of the fixing part (8) for cooperating with the third plate (33).

7. The assembled noise reduction device according to claim 6, characterized in that, The second sound-absorbing part (4) includes: At least two fixing plates (41) are spaced apart along the second direction on the side of the fixing part (8) away from the third plate (33); The sound-absorbing wedge (42) is connected to the fixed plate (41), and the tip of the sound-absorbing wedge (42) extends into the air outlet channel.

8. The prefabricated noise reduction device according to any one of claims 1-7, characterized in that, The housing (3) includes: The first structural layer (311) constitutes the basic structure of the shell (3); The second structural layer (312) is superimposed on the side of the first structural layer (311) near the noise reduction device, and is used for sound absorption and noise reduction; The third structural layer (313) is superimposed on the second structural layer (312) on the side close to the noise reduction device.

9. The prefabricated noise reduction device according to any one of claims 1-7, characterized in that, Also includes: The third sound-absorbing part (9) is disposed on the inner wall surface of the receiving cavity.

10. The prefabricated noise reduction device according to any one of claims 1-7, characterized in that, Also includes: Wheel body (101) is disposed on the side of the base plate (1); A handle (102) is provided on the upper surface of the base plate (1) and spaced apart from the housing (3); The wheel body (101) is a flexible wheel body (101).

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