A noise reduction device for a crusher dust removal duct

Abstract

The utility model discloses a kind of noise reduction devices for crusher dust removal pipeline, with silencer shell, the upper and lower ends of the silencer shell are through, wherein the upper port of silencer shell is equipped with first orifice plate, rain shed is equipped with on the upper end outer wall of silencer shell by stand column;Second orifice plate and third orifice plate are also sequentially equipped in the inside of silencer shell from top to bottom, several blocks of sound reduction hole plate arranged vertically are also set between first orifice plate and second orifice plate, all sound reduction hole plate vertical parallel arrangement and leave spacing between each other, sound reduction hole plate and first orifice plate and second orifice plate are arranged perpendicular to each other, the lower port of silencer shell is the inlet of external exhaust gas after cloth bag dust removal filtration is discharged;The utility model is designed on exhaust duct a sound reduction structure, so that the noise caused by discharged airflow can be greatly reduced, and the noise pollution to surrounding residents reaches minimum.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a noise reduction device for dust removal pipelines of crushers. Background Technology

[0002] In the scrap steel and iron recycling workshop, the large amount of scrap steel, scrap iron, and scrap metal collected needs to be crushed, sorted, and screened before remelting to facilitate subsequent resmelting. The crushing process of scrap metal slag is carried out using a crusher. Due to the large processing volume, a large amount of dust is generated in the workshop. This dust is usually removed by large bag filter dust collectors before the treated gas is discharged. The discharged gas after dust removal has a very large flow rate, which causes extremely loud noise when the gas is discharged from the dust collection pipe, causing significant noise pollution to residents around the factory. At the same time, fine dust particles are still mixed in with the gas after bag filter dust removal and are discharged, affecting air quality. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned issues by providing a noise reduction device for dust removal pipes in crushers. This device effectively reduces exhaust noise by improving the design of the exhaust pipes of bag filters.

[0004] The specific solution of this utility model is: a noise reduction device for a dust removal pipeline of a crusher, having a silencer shell, the upper and lower ends of which are connected, wherein the upper port of the silencer shell is provided with a first perforated plate, and a rainproof canopy is installed on the upper outer wall of the silencer shell by means of a column; inside the silencer shell, a second perforated plate and a third perforated plate are arranged sequentially from top to bottom, and several vertically arranged sound-absorbing perforated plates are arranged between the first and second perforated plates, all of which are arranged vertically parallel and with a gap between them, and the sound-absorbing perforated plates are arranged perpendicular to the first and second perforated plates; the lower port of the silencer shell is the inlet for the exhaust gas discharged after the bag filter dust removal.

[0005] Furthermore, the sound-absorbing perforated plate described in this utility model is a double-layer perforated plate with a rectangular cross-section formed by bending a single galvanized perforated plate, and the interior of the sound-absorbing perforated plate has a rectangular cavity structure.

[0006] Furthermore, in this utility model, the first perforated plate, the second perforated plate, and the third perforated plate are all single-layer galvanized perforated plates. Among them, the diameter of the holes on the third perforated plate is the smallest and the holes are densely distributed. The diameter of the holes on the second perforated plate is the second smallest, and the diameter of the holes on the first perforated plate is the largest.

[0007] Furthermore, the exhaust gas inlet of this utility model is an inverted cone shape, and a reinforcing rib is welded on its outer wall.

[0008] Furthermore, the height of the upper and lower ends of the muffler housing described in this utility model is 3500mm to 4000mm.

[0009] Furthermore, the muffler housing of this invention is also provided with symmetrically positioned supports welded on the outer side wall.

[0010] This utility model has the following beneficial effects: 1. This utility model designs a sound-absorbing structure on the exhaust duct, which greatly reduces the noise caused by the exhaust airflow and minimizes noise pollution to surrounding residents.

[0011] 2. Due to its structural design, this utility model can not only reduce noise during exhaust, but also block and isolate dust in the exhaust gas to a certain extent, thereby achieving the effect of dust removal and purification. It achieves two functions in one structure and has obvious promotional value. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main cross-section of this utility model; Figure 2 This is a top view of the structure of the sound-absorbing perforated plate arrangement in this utility model; Figure 3 This is a schematic diagram of a single sound-absorbing perforated plate structure in this utility model; Figure 4 This is a top view structural diagram of the third perforated plate in this utility model; Figure 5 This is a schematic diagram of the support lug of this utility model.

[0013] In the diagram: 1—Column, 2—Rainproof canopy, 3—First perforated plate, 4—Silencer housing, 5—Silencer perforated plate, 6—Second perforated plate, 7—Third perforated plate, 8—Exhaust gas inlet, 9—Reinforcing rib plate, 10—Exhaust hole a, 11—Exhaust hole b. Detailed Implementation

[0014] The technical solution 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, and 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 protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] See Figures 1-5 This utility model is a noise reduction device for dust removal pipelines of crushers. It has a silencer shell 4, which is open at both ends. The upper end of the silencer shell is provided with a first perforated plate 3. A rainproof canopy 2 is installed on the upper outer wall of the silencer shell through a column 1. The silencer shell is also provided with a second perforated plate 6 and a third perforated plate 7 from top to bottom. Several vertically arranged sound-absorbing perforated plates 5 are also provided between the first and second perforated plates. All the sound-absorbing perforated plates are arranged vertically parallel and with a gap between them. The sound-absorbing perforated plates are arranged perpendicular to the first and second perforated plates. The lower end of the silencer shell is the exhaust gas inlet 8 after the bag filter dust removal.

[0017] Furthermore, the sound-absorbing perforated plate described in this utility model is a double-layer perforated plate with a rectangular cross-section formed by bending a single galvanized perforated plate. The interior of the sound-absorbing perforated plate has a rectangular cavity structure, and densely distributed exhaust holes a10 are provided on it.

[0018] Furthermore, in this utility model, the first perforated plate, the second perforated plate, and the third perforated plate are all single-layer galvanized perforated plates. Among them, the diameter of the holes on the third perforated plate is the smallest and most densely distributed, namely the exhaust holes b11. The diameter of the holes on the second perforated plate is the second largest, and the diameter of the holes on the first perforated plate is the largest.

[0019] Furthermore, the exhaust gas inlet of this utility model is an inverted cone shape, and a reinforcing rib plate 9 is welded on its outer side wall.

[0020] Furthermore, the height of the upper and lower ends of the muffler housing described in this utility model is 3500mm to 4000mm.

[0021] Furthermore, the muffler housing of this invention is also provided with symmetrically positioned supports welded on the outer side wall.

[0022] In use, this utility model is installed and connected to the exhaust duct of a bag filter. When the bag filter is working, because the machinery used to crush scrap steel in the workshop is very large, the dust removal capacity of the bag filter is very large, and therefore the exhaust volume is also very large. The air volume discharged from the bag filter passes through the third perforated plate and the second perforated plate in sequence, flows upward, and then passes through the silencer perforated plate between the first perforated plate and the second perforated plate. The silencer perforated plate in this utility model adopts a special structure, and the gas passes through the inner cavity and the exhaust hole a10 on it, which greatly reduces the huge noise generated by the exhaust, thus achieving noise reduction treatment.

[0023] The entire silencer casing of this invention has a diameter of approximately 1.5 meters, which is quite large, resulting in a very large exhaust volume. However, through this invention, noise is reduced step by step from bottom to top, and by the time the gas is exhausted at the top, the noise level is extremely low. Furthermore, the multi-layered perforated plates with different pore sizes in this invention can effectively further filter dust in the exhaust gas, making the exhaust gas cleaner.

[0024] This invention designs a sound-absorbing structure on the exhaust duct, which greatly reduces the noise caused by the exhaust airflow, minimizing noise pollution to surrounding residents.

[0025] Due to its structural design, this utility model can not only reduce noise during exhaust, but also block and isolate dust in the exhaust gas to a certain extent, thereby achieving the effect of dust removal and purification. It achieves two functions in one structure and has obvious promotional value.

Claims

1. A noise reduction device for a dust removal pipeline of a crusher, comprising a silencer housing, characterized in that: The silencer housing is open at both the top and bottom. The upper port of the silencer housing is provided with a first perforated plate. A rainproof canopy is installed on the upper outer wall of the silencer housing via a column. The silencer housing is also provided with a second perforated plate and a third perforated plate from top to bottom. Several vertically arranged sound-absorbing perforated plates are also provided between the first and second perforated plates. All sound-absorbing perforated plates are arranged vertically parallel and with a gap between them. The sound-absorbing perforated plates are arranged perpendicular to the first and second perforated plates. The lower port of the silencer housing is the inlet for the exhaust gas after the bag filter dust collection.

2. The noise reduction device for a dust removal pipeline of a crusher according to claim 1, characterized in that: The sound-absorbing perforated plate is a double-layer perforated plate with a rectangular cross-section, formed by bending a single galvanized perforated plate, and the interior of the sound-absorbing perforated plate has a rectangular cavity structure.

3. The noise reduction device for a dust removal pipeline of a crusher according to claim 1, characterized in that: The first, second, and third perforated plates are all single-layer galvanized perforated plates. Among them, the third perforated plate has the smallest diameter and is the most densely packed with holes, the second perforated plate has the second largest diameter, and the first perforated plate has the largest diameter.

4. A noise reduction device for a dust removal pipeline of a crusher according to claim 1, characterized in that: The exhaust gas inlet is in the shape of an inverted cone, and a reinforcing rib is welded to its outer wall.

5. A noise reduction device for a dust removal pipeline of a crusher according to claim 1, characterized in that: The height of the upper and lower ends of the muffler housing is 3500mm to 4000mm.

6. A noise reduction device for a dust removal pipeline of a crusher according to claim 1, characterized in that: Support lugs are also welded at symmetrical positions on the outer side wall of the muffler housing.

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