Outdoor pipeline type noise reduction device

Abstract

The utility model discloses an outdoor pipeline type noise reduction device which comprises a tubular shell, a connecting flange arranged on the tubular shell, a noise reduction layer arranged on the inner wall of the tubular shell, a metal net isolation layer arranged on the inner side of the noise reduction layer and a plurality of waterproof and oil-resistant sound absorption pieces arranged in the tubular shell. Two waterproof and oil-resistant sound absorption sheets which are adjacent left and right are connected and fixed, and then two adjacent connecting flanges are connected and fixed through bolts, so that when the waterproof and oil-resistant sound absorption sheets in all the tubular shells need to be taken out to be washed or cleaned, the waterproof and oil-resistant sound absorption sheets can be taken out to be washed or cleaned, and the waterproof and oil-resistant sound absorption sheets can be taken out to be washed or cleaned. All the waterproof and oil-resistant sound absorption pieces can be pulled out only by pulling the waterproof and oil-resistant sound absorption piece in the tubular shell farthest away from the smoke exhaust port, and therefore the waterproof and oil-resistant sound absorption pieces in all the tubular shells can be conveniently taken out to be washed or replaced when the smoke exhaust pipeline needs to be long.

Description

Technical Field

[0001] This application relates to the field of noise reduction device technology, and more specifically, to an outdoor pipeline noise reduction device. Background Technology

[0002] As people's living standards continue to improve, their demands for environmental protection are also increasing. Environmental protection departments are requiring all catering companies to add fume purification and silencer devices to their exhaust vents. These fume purification devices, to a certain extent, eliminate the oily components in the fumes and play a role in this process.

[0003] A search revealed that the publication (announcement) number CN208295992U discloses "a pipeline-type noise reduction device. The pipeline-type noise reduction device includes a tubular shell, a sound-absorbing layer disposed on the inner wall of the tubular shell, and one or more waterproof and oil-proof sound-absorbing sheets disposed within the tubular shell... This utility model has a simple structure and is easy to use. It can absorb sound energy, significantly reduce noise, and has waterproof and oil-proof functions, and can extend the service life of the silencer." However, when the exhaust duct needs to be long enough to require multiple tubular shells to be spliced ​​together, this application only facilitates the removal, rinsing, or cleaning of the waterproof and oil-proof sound-absorbing sheet in the tubular shell furthest from the exhaust outlet. The waterproof and oil-proof sound-absorbing sheets in the other tubular shells are not easy to remove, rinse, or replace due to their deeper location.

[0004] To address the aforementioned issues, this application provides an outdoor duct-type noise reduction device. Utility Model Content

[0005] One objective of this application is to provide an outdoor duct-type noise reduction device, comprising a tubular shell, a connecting flange disposed on the tubular shell, a sound-absorbing layer disposed on the inner wall of the tubular shell, a metal mesh isolation layer disposed inside the sound-absorbing layer, and a plurality of waterproof and oil-proof sound-absorbing sheets disposed inside the tubular shell. One end of each waterproof and oil-proof sound-absorbing sheet is provided with a slot, and the inner wall of the slot is symmetrically provided with limit holes. The other end of each waterproof and oil-proof sound-absorbing sheet is fixedly connected to a plug that is adapted to the slot. The plug is symmetrically provided with grooves, and a spring is disposed inside the groove. A limit plate is slidably connected inside the groove.

[0006] Furthermore, one end of the spring is fixedly connected to the inner bottom wall of the groove, and the other end of the spring is fixedly connected to the limiting plate.

[0007] Furthermore, one side of the surface of the limiting plate is inclined, and multiple springs are provided and arranged in a rectangular array.

[0008] Furthermore, the inner wall of the groove is symmetrically provided with limiting grooves, and a matching limiting slider is slidably connected inside the limiting groove. The length of the limiting slider is less than the width of the limiting plate, and the limiting slider is fixedly connected to the limiting plate.

[0009] Furthermore, positioning plates are provided on both sides of the upper and lower ends of the waterproof and oil-proof sound-absorbing sheet, and the positioning plates are fixedly connected to the metal mesh isolation layer.

[0010] Furthermore, each of the two adjacent positioning plates has a slot on one of its opposite sides, and a matching plate is engaged inside the slot. The length of the plate is equal to the length of the positioning plate, and the plate is fixedly connected to the surface of the waterproof, oil-proof, and sound-absorbing sheet.

[0011] Furthermore, the waterproof and oil-proof sound-absorbing sheet is symmetrically provided with grooves, and the grooves are provided with matching limiting blocks, which are fixedly connected between two adjacent positioning plates.

[0012] The beneficial effects of this application are:

[0013] When assembling tubular housings, the tubular housings to be assembled are aligned with the already installed tubular housings. Then, the tubular housing to be installed is moved to the left, causing the insert block to move to the left. When the insert block is fully inserted into the slot, the limiting plate aligns with the limiting hole. At this point, the spring returns to its original position, generating a thrust that moves the limiting plate into the limiting hole, thus limiting the installation of the waterproof and oil-proof sound-absorbing sheet. This connects and fixes two adjacent waterproof and oil-proof sound-absorbing sheets. Then, bolts are used to connect and fix two adjacent connecting flanges. This way, when it is necessary to remove, rinse, or clean all the waterproof and oil-proof sound-absorbing sheets inside the tubular housings, only the sheet in the tubular housing furthest from the exhaust outlet needs to be pulled out to remove all the waterproof and oil-proof sound-absorbing sheets. This facilitates the removal, rinsing, or replacement of all the waterproof and oil-proof sound-absorbing sheets inside the tubular housings when the exhaust duct needs to be long. Attached Figure Description

[0014] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 For the purposes of this application Figure 1 Enlarged schematic diagram of the structure of region A in the middle;

[0018] Figure 3 For the purposes of this application Figure 1 Another perspective structural diagram;

[0019] Figure 4 This is a partial structural diagram of this application;

[0020] Figure 5 For the purposes of this application Figure 4 Enlarged schematic diagram of the structure of region B in the middle.

[0021] Explanation of the labels in the diagram:

[0022] 1. Tubular shell; 2. Connecting flange; 3. Sound-absorbing layer; 4. Metal mesh isolation layer; 5. Positioning plate; 6. Waterproof and oil-proof sound-absorbing sheet; 7. Slot; 8. Limiting hole; 9. Insert block; 10. Groove; 11. Spring; 12. Limiting plate; 13. Channel; 14. Limiting block. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1 , Figure 2 , Figure 3, Figure 4 and Figure 5 This application discloses an outdoor duct-type noise reduction device, including a tubular shell 1, a connecting flange 2 disposed on the tubular shell 1, a sound-absorbing layer 3 disposed on the inner wall of the tubular shell 1, a metal mesh isolation layer 4 disposed inside the sound-absorbing layer 3, and multiple waterproof and oil-proof sound-absorbing sheets 6 disposed inside the tubular shell 1. The sound-absorbing layer 3, the metal mesh isolation layer 4, and the waterproof and oil-proof sound-absorbing sheets 6 are all prior art, and their structure and working principle are based on a duct-type noise reduction device disclosed in CN208295992U. The noise reduction device will not be described in detail here; a slot 7 is provided at one end of the waterproof and oil-proof sound-absorbing sheet 6, and a limiting hole 8 is symmetrically provided on the inner wall of the slot 7. The other end of the waterproof and oil-proof sound-absorbing sheet 6 is fixedly connected to a plug 9 that is compatible with the slot 7. A groove 10 is symmetrically provided on the plug 9. A spring 11 is provided inside the groove 10. The spring 11 is in a stretched state. One end of the spring 11 is fixedly connected to the inner bottom wall of the groove 10, and the other end of the spring 11 is fixedly connected to the limiting plate 12. The limiting plate 12 is slidably connected inside the groove 10.

[0028] When assembling the tubular housing 1, the tubular housing 1 to be assembled is aligned with the already installed tubular housing 1. Then, the tubular housing 1 to be installed is moved to the left, causing the insert 9 to move to the left. When the insert 9 moves to the left and is inserted into the slot 7, the inclined surface of the limiting plate 12 is squeezed and gradually moves into the groove 10. When the limiting plate 12 moves into the groove 10, it squeezes the spring 11, and the spring 11 is compressed until the limiting plate 12 is completely moved into the groove 10. When the insert 9 is completely inserted into the slot 7, the limiting plate 12 aligns with the limiting hole 8. At this time, the spring 11 resets and generates a thrust to move the limiting plate 12 into the limiting hole 8, thereby limiting the waterproof and oil-proof sound-absorbing sheet 6 to be installed, thus connecting and fixing the two adjacent waterproof and oil-proof sound-absorbing sheets 6.

[0029] Please see Figure 5 The surface of the limiting plate 12 is inclined on one side, which facilitates the insertion of the limiting plate 12 into the limiting hole 8. There are multiple springs 11 arranged in a rectangular array. The inner wall of the groove 10 is symmetrically provided with limiting grooves. The limiting grooves are slidably connected to the limiting sliders. The cooperation between the limiting sliders and the limiting grooves limits the limiting plate 12 and improves the stability of the limiting plate 12 when it moves. The length of the limiting slider is less than the width of the limiting plate 12. The limiting slider is fixedly connected to the limiting plate 12.

[0030] Please see Figure 2Positioning plates 5 are provided on both sides of the upper and lower ends of the waterproof and oil-proof sound-absorbing sheet 6. The positioning plates 5 are fixedly connected to the metal mesh isolation layer 4. The positioning plates 5 play a role in limiting the position of the waterproof and oil-proof sound-absorbing sheet 6 and preventing it from tipping over. The opposite sides of the two adjacent positioning plates 5 are provided with slots. The cooperation of the slots and the plates limits and fixes the waterproof and oil-proof sound-absorbing sheet 6, improving the stability of the waterproof and oil-proof sound-absorbing sheet 6 installed between the two adjacent positioning plates 5. The slots are fitted with matching plates. The length of the plates is equal to the length of the positioning plates 5. The plates are fixedly connected to the surface of the waterproof and oil-proof sound-absorbing sheet 6.

[0031] Please see Figure 5 Four waterproof and oil-proof sound-absorbing sheets 6 near the exhaust port are symmetrically provided with grooves 13 on their left ends. The grooves 13 are equipped with matching limiting blocks 14. The cooperation between the limiting blocks 14 and the grooves 13 plays a role in limiting the waterproof and oil-proof sound-absorbing sheets 6. When the tubular shell 1 is assembled, when the insert 9 is inserted into the slot 7, it will generate a pushing force on the waterproof and oil-proof sound-absorbing sheet 6 inside the tubular shell 1 on the left side. At this time, the limiting blocks 14 and the grooves 13 play a role in limiting the waterproof and oil-proof sound-absorbing sheet 6, thereby preventing the waterproof and oil-proof sound-absorbing sheet 6 from being displaced due to the pushing force. The limiting blocks 14 are fixedly connected between two adjacent positioning plates 5.

[0032] The implementation principle of this application embodiment is as follows: when splicing the tubular shell 1, the tubular shell 1 to be spliced ​​is made to correspond with the installed tubular shell 1, and then the tubular shell 1 to be installed is moved to the left and abuts against the right end of the waterproof and oil-proof sound-absorbing sheet 6 inside the tubular shell 1 to be installed, so as to avoid the waterproof and oil-proof sound-absorbing sheet 6 from being displaced to the right due to the effect of the counter-thrust force during installation.

[0033] The leftward movement of the tubular housing 1 causes the insert 9 to move to the left. As the insert 9 moves to the left and inserts into the slot 7, the inclined surface of the limiting plate 12 is compressed and gradually moves into the groove 10. As the limiting plate 12 moves into the groove 10, it compresses the spring 11, causing the spring 11 to contract until the limiting plate 12 is fully inserted into the groove 10. When the insert 9 is fully inserted into the slot 7, the limiting plate 12 aligns with the limiting hole 8. At this point, the spring 11 resets, generating a thrust that moves the limiting plate 12 into the limiting hole 8, thus forming a... The waterproof and oil-proof sound-absorbing sheet 6 that needs to be installed is limited, thereby connecting and fixing two adjacent waterproof and oil-proof sound-absorbing sheets 6. Then, the two adjacent connecting flanges 2 are connected and fixed with bolts. In this way, when it is necessary to remove, rinse or clean all the waterproof and oil-proof sound-absorbing sheets 6 inside the tubular shell 1, it is only necessary to pull out the waterproof and oil-proof sound-absorbing sheet 6 inside the tubular shell 1 farthest from the exhaust port to remove all the waterproof and oil-proof sound-absorbing sheets 6. This makes it convenient to remove, rinse or replace all the waterproof and oil-proof sound-absorbing sheets 6 inside the tubular shell 1 when the exhaust pipe needs to be long.

[0034] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. An outdoor duct-type noise reduction device, comprising a tubular shell (1), a connecting flange (2) disposed on the tubular shell (1), a sound-absorbing layer (3) disposed on the inner wall of the tubular shell (1), a metal mesh isolation layer (4) disposed on the inner side of the sound-absorbing layer (3), and a plurality of waterproof and oil-proof sound-absorbing sheets (6) disposed inside the tubular shell (1), characterized in that: One end of the waterproof and oil-proof sound-absorbing sheet (6) is provided with a slot (7), and the inner wall of the slot (7) is symmetrically provided with limiting holes (8). The other end of the waterproof and oil-proof sound-absorbing sheet (6) is fixedly connected with a plug (9) that is compatible with the slot (7). The plug (9) is symmetrically provided with grooves (10), and a spring (11) is provided inside the groove (10). A limiting plate (12) is slidably connected inside the groove (10).

2. The outdoor pipeline noise reduction device according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the inner bottom wall of the groove (10), and the other end of the spring (11) is fixedly connected to the limiting plate (12).

3. The outdoor pipeline noise reduction device according to claim 1, characterized in that: The surface of the limiting plate (12) is inclined on one side, and multiple springs (11) are provided and arranged in a rectangular array.

4. The outdoor ducted noise reduction device of claim 1, wherein: The inner wall of the groove (10) is symmetrically provided with a limiting slide groove, and a matching limiting slider is slidably connected inside the limiting slide groove. The length of the limiting slider is less than the width of the limiting plate (12), and the limiting slider is fixedly connected to the limiting plate (12).

5. The outdoor ducted noise reduction device of claim 1, wherein: The waterproof and oil-proof sound-absorbing sheet (6) has positioning plates (5) on both sides of its upper and lower ends, and the positioning plates (5) are fixedly connected to the metal mesh isolation layer (4).

6. An outdoor ducted noise reduction device according to claim 5, wherein: Each of the two adjacent positioning plates (5) has a slot on one side, and a matching plate is engaged inside the slot. The length of the plate is equal to the length of the positioning plate (5), and the plate is fixedly connected to the surface of the waterproof and oil-proof sound-absorbing sheet (6).

7. An outdoor pipeline-type noise reduction device according to claim 5, characterized in that: The waterproof and oil-proof sound-absorbing sheet (6) has symmetrically opened grooves (13), and the grooves (13) are provided with matching limiting blocks (14), which are fixedly connected between two adjacent positioning plates (5).

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