Noise reduction device for cleaning machine in machining workshop and mounting method of noise reduction device

Abstract

The invention discloses a noise reduction device for a cleaning machine in a machining workshop and an installation method of the noise reduction device. The noise reduction device comprises protective covers arranged on the left side and the right side of the cleaning machine. The protective cover comprises a frame structure arranged on the ground and a sound insulation wall embedded in the frame structure. The middle of the bottom end of the frame structure is provided with an equipment door facilitating access of equipment and access doors located on the left side and the right side of the equipment door and facilitating access of maintainers. The transparent glass cover of the cleaning machine is connected with the frame structure in a bonding manner; the sound insulation wall comprises sound absorption cotton, a sound absorption pore plate, rock wool and a polycarbonate sunlight plate which are sequentially arranged in the direction from the cleaning machine to the protective cover. The sound insulation wall is composed of the sound absorption cotton, the sound absorption pore plate, the rock wool and the polycarbonate sunlight plate, so that even if an equipment door of the cleaning machine is opened, noise generated by the cleaning machine can still be isolated and absorbed through the sound insulation wall, and the surrounding noise value of the cleaning machine can meet the national standard requirement that the noise value does not exceed 80 dB.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction, and in particular to a noise reduction device for a cleaning machine in a machining workshop and an installation method thereof. Background Art

[0002] At present, the cleaning machine in the machining workshop is divided into three stations for processing. The first station is the cleaning liquid brushing station, which uses a grab robot to grab the workpiece and shake it up and down in the water tank for water cleaning. The second and third stations are the fixed-point air blowing station and the surface air knife blowing station, respectively, both of which use 0.6MPa compressed air to blow the workpiece. Only a metal wire protection net is set outside the cleaning machine station in the existing machining workshop. When the equipment door at its inlet and outlet is opened, the noise generated by the internal working air blowing of the cleaning machine will inevitably spread out, causing the surrounding noise of the cleaning machine to exceed 80dB, causing great harm to the physical and mental health of the on-site operator and reducing work efficiency.

[0003] Therefore, it is urgent to propose a new solution to solve the above problems. Summary of the invention

[0004] The present invention provides a noise reduction device for a cleaning machine in a machining workshop and an installation method thereof, so as to solve the problem in the prior art that the noise at the cleaning machine station exceeds 80dB, causing great harm to the body and mind of the on-site operator and reducing work efficiency.

[0005] The present invention provides a noise reduction device for a cleaning machine in a mechanical processing workshop, comprising protective covers arranged on the left and right sides of the cleaning machine;

[0006] The protective cover comprises a frame structure arranged on the ground and a soundproof wall embedded in the frame structure, wherein a device door for facilitating the entry and exit of the device and an inspection door for facilitating the entry and exit of maintenance personnel are provided at the middle of the bottom end of the frame structure;

[0007] The transparent glass cover and the frame structure of the cleaning machine are connected by bonding;

[0008] The sound insulation wall comprises sound-absorbing cotton, sound-absorbing perforated plate, rock wool and polycarbonate sunlight board which are sequentially arranged from the cleaning machine toward the protective cover.

[0009] Furthermore, the sound insulation wall also includes an annular fixing plate, which is adhered to the outer surface of the polycarbonate sun panel, and the outer periphery of the fixing plate is adhered to the end of the frame structure, and the fixing plate is flush with the outer surface of the frame structure.

[0010] Furthermore, the equipment door is provided with an equipment door lock which is communicatively connected to the cleaning machine, and the cleaning machine is provided with a receiving device which can receive the equipment door lock signal, and the receiving device is configured to issue a shutdown instruction to the cleaning machine after receiving the equipment door opening signal transmitted by the equipment door lock signal.

[0011] Furthermore, the equipment door comprises a left-moving equipment door and a right-moving equipment door, and the left-moving equipment door and the right-moving equipment door are connected in a staggered manner.

[0012] Furthermore, the inspection door is hingedly arranged on the frame structure via hinges.

[0013] Furthermore, handles are provided on the inner and outer surfaces of the inspection door, and a decibel display for displaying noise decibels is provided on the outer surface of the inspection door.

[0014] Furthermore, a vacuum glass layer is provided between the sound-absorbing perforated plate and the rock wool.

[0015] Furthermore, a rubber cushion layer is provided at the connection between the frame structure and the transparent glass cover.

[0016] Furthermore, a serrated portion is provided on the side of the sound-absorbing cotton facing the cleaning machine.

[0017] The present invention also provides a method for installing a noise reduction device using the above-mentioned cleaning machine in a machining workshop, comprising the following steps:

[0018] The sound-absorbing cotton, the sound-absorbing perforated plate, the rock wool, the polycarbonate sun board and the fixing plate are sequentially bonded to form a sound insulation wall, the bottom end of the frame structure is fixed to the ground, the equipment door and the inspection door are installed in the frame structure, and the sound insulation wall is integrally embedded in the frame structure to form a protective cover;

[0019] The frame structure is fixed to the left and right sides of the transparent glass cover by bonding.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The noise reduction device of the cleaning machine in the machining workshop of the present invention comprises a sound insulation wall composed of sound-absorbing cotton, a sound-absorbing perforated plate, rock wool and a polycarbonate sun plate, and the sound insulation wall is arranged in the frame structure of the protective cover on the left and right sides of the cleaning machine. The sound insulation wall formed by the combination of the above four structures can isolate and absorb the noise generated by the cleaning machine through the sound insulation wall even when the equipment door of the cleaning machine is opened, so that the noise value around the cleaning machine meets the national standard requirement of not more than 80dB;

[0022] 2. The installation method of the noise reduction device of the machining workshop cleaning machine of the present invention has a simple installation process, and when the equipment door of the cleaning machine is open, the noise can still be isolated and absorbed by the sound insulation wall, so that the noise value around the cleaning machine meets the national standard requirement of not more than 80dB. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a front view of the noise reduction device of the present invention before installation;

[0024] Figure 2 is a front view of the noise reduction device of the present invention after installation;

[0025] Figure 3 is a side view of the noise reduction device of the present invention after installation;

[0026] Figure 4 is a cross-sectional schematic diagram of the sound insulation wall of the present invention;

[0027] Figure numerals: 1. Cleaning machine; 11. Transparent glass cover; 2. Protective cover; 21. Frame structure; 211. Equipment door; 2111. Left-moving equipment door; 2112. Right-moving equipment door; 22. Soundproof wall; 221. Sound-absorbing cotton; 222. Sound-absorbing perforated plate; 223. Rock wool; 224. Polycarbonate sun panel; 225. Fixed plate; 213. Inspection door. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given together with the attached Figures 1 to 4 The detailed instructions are as follows.

[0029] like Figures 1 to 4 As shown, this embodiment provides a noise reduction device for a cleaning machine in a machining workshop, comprising a protective cover 2 arranged on the left and right sides of a cleaning machine 1;

[0030] The protective cover 2 includes a frame structure 21 set on the ground by multiple anchor bolts and a sound insulation wall 22 embedded in the frame structure 21. The anchor bolts are used to firmly install the protective cover 2 on the ground, while ensuring that the protective cover 2 fits tightly with the cleaning machine 1 without any gap. The middle part of the bottom end of the frame structure 21 is provided with an equipment door 211 for facilitating the entry and exit of the equipment and an inspection door 213 located on the left and right sides of the equipment door 211 for facilitating the entry and exit of maintenance personnel. The two inspection doors 213 correspond to the entrance and exit of the cleaning machine 1 respectively, which makes it more convenient to deal with equipment failures.

[0031] The transparent glass cover 11 and the frame structure 21 of the cleaning machine 1 are connected by bonding three layers of tin foil, wherein the transparent glass cover 11 and the frame structure 21 are both square in shape, and the frame structure 21 is made of aluminum alloy to meet the mechanical requirements and will not be deformed due to the installation of each layer of sound-absorbing material, while ensuring that there is no gap between the transparent glass cover 11 and the frame structure 21.

[0032] The soundproof wall 22 includes sound-absorbing cotton 221 , a sound-absorbing perforated plate 222 , rock wool 223 and a polycarbonate sunlight board 224 which are sequentially arranged from the cleaning machine 1 toward the protective cover 2 .

[0033] The noise reduction device of the cleaning machine in the machining workshop of the present invention comprises a soundproof wall composed of sound-absorbing cotton, a sound-absorbing perforated plate, rock wool and a polycarbonate sun panel, and the soundproof wall is arranged in the frame structure of the protective cover on the left and right sides of the cleaning machine. The soundproof wall formed by the combination of the above four structures can isolate and absorb noise even when the equipment door of the cleaning machine is opened, so that the noise value around the cleaning machine meets the national standard requirement of not exceeding 80dB.

[0034] Among them, polycarbonate sunlight board 224 has the characteristics of light weight, impact resistance, sound insulation, heat insulation, flame retardancy, anti-aging and transparency. Its principle is to use its surface texture and internal porous structure to absorb and reflect noise fluctuations, thereby reducing the propagation of sound in the air.

[0035] The rock wool 223 of this embodiment is a slag rock wool product, which has excellent sound insulation and sound absorption properties. Its sound absorption mechanism is that this product has a porous structure. When sound waves pass through, friction is generated due to the effect of flow resistance, so that part of the sound energy is absorbed by the fiber, hindering the transmission of sound waves.

[0036] The sound-absorbing perforated plate 222 is a device used to improve the indoor acoustic environment. The principle of the sound-absorbing perforated plate can be explained by two main acoustic concepts, namely sound absorption and scattering. Sound absorption refers to the ability of a material or structure to absorb and transform the energy of sound waves. When sound waves pass through the sound-absorbing perforated plate, the sound-absorbing material in the plate will transform the energy of the sound waves into weak heat energy, thereby reducing the reflection of the sound waves. As a result, the sound will not be reflected back and forth in the space, reducing echoes and reverberations.

[0037] The purpose of the sound-absorbing cotton 221 is to prevent sound from passing through, so it has a tighter air microporous structure (high density). The denser the pores, the less chance there is for sound to penetrate to the other side. It can buffer and absorb sound waves, so that no sound waves are reflected from the plane where the sound-absorbing cotton is located. Through the combination of the above four, the soundproof wall 22 can not only isolate but also absorb the noise generated by the cleaning machine, so that the noise value around the cleaning machine meets the national standard requirement of no more than 80dB.

[0038] In this embodiment, Figure 4 As shown, the sound insulation wall 22 also includes an annular fixing plate 225. The fixing plate 225 is set to be annular to reduce the overall weight. The fixing plate 225 is adhered to the outer surface of the polycarbonate sun panel 224. The outer periphery of the fixing plate 225 is adhered to the end of the frame structure 21. The periphery of the sound-absorbing cotton 221, the sound-absorbing perforated plate 222, the rock wool 223 and the polycarbonate sun panel 224 are also set at the end of the frame structure 21 by bonding. The fixing plate 225 is flush with the outer surface of the frame structure 21 to prevent workers from being injured.

[0039] In this embodiment, the equipment door 211 is provided with an equipment door lock that is communicatively connected to the cleaning machine 1, and the cleaning machine 1 is provided with a receiving device that can receive the equipment door lock signal. The receiving device is configured to issue a shutdown command to the cleaning machine 1 after receiving the equipment door opening signal transmitted by the equipment door lock signal. In this way, during the production process, when personnel open the inspection door, the equipment can be stopped to avoid harm to personnel.

[0040] In this embodiment, the device door 211 includes a left-moving device door 2111 and a right-moving device door 2112 , and the left-moving device door 2111 and the right-moving device door 2112 are connected in a staggered manner.

[0041] In this embodiment, the inspection door 213 is hingedly arranged on the frame structure 21 . In addition, the left-moving equipment door 2111 , the right-moving equipment door 2112 and the inspection door 213 also adopt the same multi-layer sound-absorbing material as the soundproof wall 22 .

[0042] In this embodiment, handles are provided on the inner and outer surfaces of the inspection door 213, and a decibel display for displaying noise decibels is provided on the outer surface of the inspection door 213, so as to facilitate the measurement of noise.

[0043] In this embodiment, a vacuum glass layer is provided between the sound-absorbing perforated plate 222 and the rock wool 223, which can further isolate the propagation of noise. It also has a certain heat insulation function. The thickness is 13 mm, and other values ​​between 12 and 15 mm can also be used.

[0044] In this embodiment, a rubber cushion layer is provided at the connection between the frame structure 21 and the transparent glass cover 11 to achieve a shock-absorbing effect.

[0045] In this embodiment, a serrated portion 2211 is provided on the side of the sound-absorbing cotton 221 facing the cleaning machine 1 to better absorb noise.

[0046] The present invention also provides a method for installing a noise reduction device of a cleaning machine in a machining workshop, comprising the following steps:

[0047] S1. Adhere the sound-absorbing cotton 221, the sound-absorbing perforated plate 222, the rock wool 223, the polycarbonate sunlight board 224 and the fixing plate 225 in sequence to form a sound insulation wall 22, fix the bottom end of the frame structure 21 to the ground, install the equipment door 211 and the inspection door 213 in the frame structure 21, and embed the sound insulation wall 22 as a whole in the frame structure 21 to form a protective cover 2;

[0048] S2. Fix the frame structure 21 to the left and right sides of the transparent glass cover 11 by bonding.

[0049] Serial number Detection point Before installing the protective cover After the protective cover is installed 1 Cylinder OP50 cleaning machine inlet 87.3dB(A) 75.3dB(A) 2 OP50 cylinder cleaning machine outlet 86.7dB(A) 79.0dB(A) 3 Cylinder OP130 cleaning machine inlet 89.1dB(A) 77.2dB(A) 4 OP130 cylinder cleaning machine outlet 91.2dB(A) 78.2dB(A) 5 Cylinder head OP50 cleaning machine inlet 88.5dB(A) 79.2dB(A) 6 Cylinder head OP50 cleaning machine outlet 88.2dB(A) 78.1dB(A) 7 Cylinder head OP140 cleaning machine inlet 85.8dB(A) 74.9dB(A) 8 Cylinder head OP140 cleaning machine outlet 90.4dB(A) 76.1dB(A) 9 Inspection door 88.4dB(A) 73.6dB(A)

[0050] The above table is a comparison of the noise before and after installation when the equipment door of the cleaning machine is open, wherein each feed port and discharge port is an opening on the transparent glass cover. The installation method of the noise reduction device of the machining workshop cleaning machine of the present invention has a simple installation process, and the noise can be isolated and absorbed by the soundproof wall, so that the noise value around the cleaning machine meets the national standard requirement of not more than 80dB.

[0051] The invention described above only expresses the implementation methods of the embodiments of the present invention, and cannot be understood as limiting the scope of the invention patent, nor does it impose any form of limitation on the structure of the embodiments of the present invention. It should be pointed out that for ordinary technicians in this field, several changes and improvements can be made without departing from the concept of the embodiments of the present invention, which all belong to the protection scope of the embodiments of the present invention.

Claims

1. A noise reduction device for a cleaning machine in a machining workshop, characterized in that: It comprises protective covers (2) arranged on the left and right sides of the cleaning machine (1); The protective cover (2) comprises a frame structure (21) arranged on the ground and a soundproof wall (22) embedded in the frame structure (21); a device door (211) for facilitating the entry and exit of the device and inspection doors (213) located on the left and right sides of the device door (211) for facilitating the entry and exit of maintenance personnel are provided at the middle of the bottom end of the frame structure (21); The transparent glass cover (11) and the frame structure (21) of the cleaning machine (1) are connected by bonding; The sound insulation wall (22) comprises sound-absorbing cotton (221), a sound-absorbing perforated plate (222), rock wool (223) and a polycarbonate sunlight plate (224) which are arranged in sequence from the cleaning machine (1) toward the protective cover (2).

2. The noise reduction device for a cleaning machine in a machining workshop according to claim 1 is characterized in that: The sound insulation wall (22) further comprises an annular fixing plate (225), wherein the fixing plate (225) is adhered to the outer surface of the polycarbonate sun panel (224), the outer periphery of the fixing plate (225) is adhered to the end of the frame structure (21), and the outer surfaces of the fixing plate (225) and the frame structure (21) are flush.

3. The noise reduction device for a cleaning machine in a machining workshop according to claim 1 is characterized in that: The equipment door (211) is provided with an equipment door lock which is in communication with the cleaning machine (1), and the cleaning machine (1) is provided with a receiving device which can receive an equipment door lock signal. The receiving device is configured to issue a shutdown instruction to the cleaning machine (1) after receiving an equipment door opening signal transmitted from the equipment door lock signal.

4. The noise reduction device for a cleaning machine in a machining workshop according to claim 1 is characterized in that: The device door (211) comprises a left-moving device door (2111) and a right-moving device door (2112), and the left-moving device door (2111) and the right-moving device door (2112) are connected in a staggered manner.

5. The noise reduction device for a cleaning machine in a machining workshop according to claim 1 is characterized in that: The inspection door (213) is hingedly arranged on the frame structure (21) via a hinge.

6. The noise reduction device for a cleaning machine in a machining workshop according to claim 5, characterized in that: The inner and outer surfaces of the inspection door (213) are provided with handles, and the outer surface of the inspection door (213) is provided with a decibel display for displaying noise decibels.

7. The noise reduction device for a cleaning machine in a machining workshop according to claim 1, characterized in that: A vacuum glass layer is provided between the sound-absorbing perforated plate (222) and the rock wool (223).

8. The noise reduction device for a cleaning machine in a machining workshop according to claim 1, characterized in that: A rubber cushion layer 1 is provided at the connection between the frame structure (21) and the transparent glass cover (11).

9. The noise reduction device for a cleaning machine in a machining workshop according to claim 1, characterized in that: The sound-absorbing cotton (221) is provided with a sawtooth portion (2211) on the side facing the cleaning machine (1).

10. A method for installing a noise reduction device of a cleaning machine in a machining workshop using any one of claims 1 to 9, characterized in that: The following steps are involved: The sound-absorbing cotton (221), the sound-absorbing perforated plate (222), the rock wool (223), the polycarbonate sun plate (224) and the fixing plate (225) are sequentially bonded to form a sound insulation wall (22), the bottom end of the frame structure (21) is fixed to the ground, the equipment door (211) and the inspection door (213) are installed in the frame structure (21), and the sound insulation wall (22) is integrally embedded in the frame structure (21) to form a protective cover (2); The frame structure (21) is fixed to the left and right side ends of the transparent glass cover (11) by bonding.

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