Shock absorption and noise reduction device for industrial fan

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a shock absorption and noise reduction device for an industrial fan. The device comprises an inertia separation box, a first gas inlet is formed in one side of the inertia separation box in the length direction, and a first gas outlet is formed in the other side of the inertia separation box in the length direction; the first gas inlet is used for introducing waste gas to be sucked, and the first gas outlet is connected to the air inlet side of the industrial fan; a first spoiler is fixedly installed in the inertia separation box, the projection of the first air inlet in the length direction is located in the first spoiler, and a first channel exists between the first spoiler and the inner side wall of the inertia separation box; a slag collecting bin is arranged on the lower portion of the inertia separation box, and a slag discharging assembly is arranged at the bottom of the slag collecting bin. The device can filter out large-particle impurities and dust impurities in to-be-sucked waste gas in advance while continuously sucking the to-be-sucked waste gas, so that sharp impact noise caused by impact of fan blades is avoided, and vibration intensification and noise intensification caused by dynamic unbalance of the fan blades are avoided.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and specifically to a vibration reduction and noise reduction device for industrial fans. Background Technology

[0002] During the manufacturing process, production enterprises usually generate harmful waste gases that cannot be directly discharged. Therefore, industrial fans are usually used to extract these waste gases from the factory and transport them to a dedicated waste gas treatment device for harmless treatment.

[0003] However, industrial fans generate significant noise during operation due to their high power, high operating speed, and vibration. Even when installed outdoors, they can easily disturb factory workers and nearby residents. Furthermore, the vibration during operation can easily damage the fans.

[0004] In response, Chinese patent CN202310250690.5 provides a vibration reduction and noise reduction device for an axial flow fan. By setting a vibration damping mechanism, it buffers and eliminates the vibration generated when the motor is working, thereby reducing the damage to the fan caused by vibration during long-term operation. By setting a sound-absorbing plate, it effectively absorbs the noise generated when the blades rotate, thereby improving the working environment.

[0005] However, some exhaust gases contain particulate matter and dust (such as exhaust gases generated in grinding, cutting, mining, and other scenarios). When these exhaust gases are drawn in by industrial fans, the particulate matter in the exhaust gases impacts the fan blades, causing sharp noise and easily causing wear on the fan blades, leading to dynamic imbalance or even damage to the fan blades. When the dust in the exhaust gases comes into contact with the fan blades, it easily adheres to the surface of the fan blades and forms scale, which in turn leads to dynamic imbalance of the fan blades. Dynamic imbalance of the fan blades will aggravate the vibration generated during the operation of the industrial fan. Summary of the Invention

[0006] The purpose of this invention is to provide a vibration reduction and noise reduction device for industrial fans, which can at least partially overcome the above-mentioned technical problems. While continuously drawing in the exhaust gas to be drawn, it filters out large particulate impurities and dust impurities in the exhaust gas in advance, thereby avoiding sharp impact noise caused by the impact of the fan blades, and avoiding the aggravation of vibration and noise caused by the dynamic imbalance of the fan blades (impact damage to the fan blades and dust adhering to the fan blades, etc., causing dynamic imbalance of the fan blades).

[0007] This invention provides a vibration reduction and noise reduction device for an industrial fan. The device includes: an inertial separation box, with a first air inlet on one side and a first air outlet on the other side along the length of the inertial separation box; the first air inlet is used to receive the exhaust gas to be drawn in, and the first air outlet is connected to the air inlet side of the industrial fan; a first baffle plate is fixedly installed inside the inertial separation box, the projection of the first air inlet along the length direction is located within the first baffle plate, and a first channel exists between the first baffle plate and the inner wall of the inertial separation box; a slag collection bin is provided at the lower part of the inertial separation box, and a slag discharge assembly is provided at the bottom of the slag collection bin.

[0008] Furthermore, there are multiple first flow-blocking plates, and each first flow-blocking plate is arranged in an array along the length direction; each first flow-blocking plate is fixedly connected to the top plate and side plate of the inertial separation box, so that the first channel is located at the bottom of the first flow-blocking plate; a second flow-blocking plate is also provided between two adjacent first flow-blocking plates, and the second flow-blocking plate is fixedly connected to the bottom plate and side plate of the inertial separation box, so that a second channel exists between the top of the second flow-blocking plate and the top plate of the inertial separation box.

[0009] Furthermore, the vibration reduction and noise reduction device also includes a dust filter; the dust filter includes a housing and a filter element; the housing is disc-shaped, and the filter element is installed inside the housing; a second air inlet is provided on the lower end face of the housing, the second air inlet is connected to the first air outlet, and a second air outlet is provided on the upper end face of the housing, the second air outlet is connected to the air inlet side.

[0010] Furthermore, the dust filter also includes a mounting frame, which includes a shaft and at least four partitions arranged in a circumferential array along the shaft; the filter element includes filter blocks that correspond one-to-one with the partitions; the mounting frame is rotatably connected to the housing via the shaft, and each partition is located inside the housing; the filter blocks are installed between any two adjacent partitions; and a dust discharge port is also provided on the lower end face of the housing.

[0011] Furthermore, there is a gap between the lower end face of the filter block and the lower inner wall of the housing.

[0012] Furthermore, a dust collection hopper is connected below the dust discharge port, and a dust discharge pipe is connected to the lower part of the dust collection hopper.

[0013] Furthermore, both the second air inlet and the second air outlet are located within a first sector-shaped region centered on the axis of the shaft and with the length of the partition as its radius; the dust outlet is located within a second sector-shaped region centered on the shaft and with the length of the partition as its radius; the first sector-shaped region and the second sector-shaped region satisfy the following relationship: , in, α This indicates the size of the central angle of the first sector. n Indicates the number of partitions. β This indicates the size of the central angle of the second sector. γ The central angle of the interval region between the first sector region and the second sector region is indicated; the height of the partition is equal to the inner cavity height of the housing, and the distance from the cross-sectional profile of the housing in the first sector region and the interval region to the axis is equal to the length of the partition.

[0014] Furthermore, the filter block is an elastic filter material; the dust filter also includes a support plate corresponding to each filter block; for any two adjacent partitions, the end of the filter block near the shaft is fixedly connected to the two adjacent partitions, and the end away from the shaft is fixedly connected to the corresponding support plate. The support plate is slidably connected to the shaft, and a compression spring is provided between them along the direction of relative sliding. The compression spring causes the support plate to press against the inner peripheral wall of the housing; from one interval region to another interval region, the distance from the cross-sectional profile of the housing in the second sector region to the axis gradually increases and then gradually decreases, so that during the process of the filter block rotating from one interval region to another interval region, the filter block is gradually stretched along the length direction of the compression spring and then returns to its original position.

[0015] Furthermore, a third air inlet is provided on the upper surface of the housing, and the third air inlet is located in the second fan-shaped area; a backflush pipe is connected to the third air inlet, and a dust exhaust fan that blows air toward the third air inlet is installed in the backflush pipe.

[0016] Furthermore, the vibration reduction and noise reduction device also includes a soundproof box; the industrial fan, the inertial separation box, and the dust filter are all installed inside the soundproof box; the wall panel of the soundproof box is a composite soundproof board.

[0017] Furthermore, the composite sound insulation board includes three stainless steel plate layers, and a filling layer is provided between any two adjacent stainless steel plate layers. The filling layer is selected from one or more of nano rubber thermal insulation and sound insulation board and polyester fiber sound absorption board.

[0018] Furthermore, the soundproof enclosure is installed on the ground via multiple buffer components; each buffer component includes a spring and an elastic covering layer, with the two ends of the spring connected to the ground and the soundproof enclosure respectively; the elastic covering layer covers the outside of the spring.

[0019] Furthermore, a slag discharge port is provided at the bottom of the slag collection bin; the slag discharge assembly includes a pusher cylinder, a first abutment plate, and a second abutment plate; the first abutment plate is located below the slag discharge port and is fixedly connected to the inertial separation box; the second abutment plate is located on one side of the slag discharge port and is fixedly connected to the inertial separation box, and the lower end face of the second abutment plate is flush with the slag discharge port; a third abutment plate is also fixedly connected to the pusher cylinder, and the upper end face of the third abutment plate is flush with the upper end face of the pusher cylinder; the pusher cylinder is slidably installed between the first abutment plate and the slag discharge port, such that the pusher cylinder... The upper end face of the pusher is flush with the slag discharge port, and the lower end face of the pusher is flush with the upper end face of the first abutment plate. By sliding the pusher, the pusher can switch between the slag receiving position, the slag pushing position, and the slag discharge position. In the slag receiving position, the upper end of the pusher is connected to the slag discharge port and the lower end is blocked by the first abutment plate. In the slag pushing position, the lower end of the pusher is blocked by the first abutment plate, the upper end is blocked by the second abutment plate, and the slag discharge port is blocked by the third abutment plate. In the slag discharge position, the slag discharge port is blocked by the third abutment plate, and the lower end of the pusher is open.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The vibration reduction and noise reduction device for industrial fans provided in this embodiment of the present disclosure, by setting an inertial separation box to pre-separate large particulate impurities in the exhaust gas to be sucked out, thereby avoiding large particulate impurities being sucked into the industrial fan and impacting the fan blades, thus avoiding the generation of sharp impact noise. At the same time, since large particulate impurities are prevented from impacting the fan blades, wear or even damage to the fan blades caused by the impact of large particulate impurities is also avoided, which is also conducive to extending the service life of the industrial fan. 2. The vibration reduction and noise reduction device for industrial fans provided in this embodiment of the present disclosure connects a dust filter in series on the pipe connecting the inertial separation box to the industrial fan. The filter element further filters out dust and impurities in the exhaust gas to be drawn, thereby preventing dust and impurities from entering the industrial fan and adhering to the fan blades, and avoiding rotational vibration caused by the dynamic imbalance of the fan blades after the industrial fan has been running for a long time. 3. The vibration reduction and noise reduction device for industrial fans provided in this embodiment of the present disclosure, by setting the cross-sectional shape of the second sector region to a shape in which the distance from each point on the cross-sectional outline to the axis of the shaft gradually increases and then gradually decreases, enables any filter block to be gradually stretched and then gradually retracted and restored during the rotation of the second sector region. The deformation effect generated in this process causes the pore structure of the filter block to change, and thus the dust and impurities that have entered the pore structure of the filter block are more likely to fall off and be discharged. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 A three-dimensional structural schematic diagram of the vibration reduction and noise reduction device for industrial fans according to an embodiment of the present invention; Figure 2 According to Figure 1 Draw a magnified view of area A; Figure 3 According to Figure 1 A longitudinal sectional view of the vibration damping and noise reduction device used for industrial fans; Figure 4 A cross-sectional view of a dust filter drawn according to an embodiment of the present invention; Figure 5 Another cross-sectional view of a dust filter drawn according to an embodiment of the present invention; Figure 6 A schematic diagram illustrating a slag discharge assembly installed at the bottom of a slag collection bin, according to an embodiment of the present invention. Figure 7 A schematic diagram of the filter cartridge located at the slag receiving position according to an embodiment of the present invention; Figure 8 A schematic diagram of the filter cartridge located at the slag pushing position according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the filter cartridge located at the slag discharge position according to an embodiment of the present invention.

[0022] The attached diagram shows the markings and corresponding component names: 1-Inertial separation box; 11-First air inlet; 12-First air outlet; 13-First baffle plate; 14-First channel; 15-Slag collection bin; 16-Second baffle plate; 17-Second channel; 18-Slag discharge port; 2-Industrial fan; 31-Push cylinder; 32-First abutment plate; 33-Second abutment plate; 34-Third abutment plate; 35-Slag discharge pipe; 36-Buffer plate; 37-Telescopic mechanism; 41-Shell; 411-Second air inlet; 412 - Second air outlet; 413 Dust discharge port; 414 Dust collection hopper; 415 Dust discharge pipe; 416 Third air inlet; 417 Backflush pipe; 418 Dust discharge fan; 421 Filter block; 431 Shaft; 432 Partition; 433 Support rod; 44 Support plate; 441 Sleeve; 45 Compression spring; 46 Drive motor; 5 Soundproof box; 51 Stainless steel plate layer; 52 Filling layer; 53 Spring; 54 Elastic covering layer; 6 Ground. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. It should be noted that this invention is already in the actual research and development stage.

[0024] Some exhaust gases contain particulate matter and dust (such as exhaust gases generated in grinding, cutting, mining, and other scenarios). When these exhaust gases are drawn in by industrial fans, the particulate matter in the exhaust gases impacts the fan blades, causing sharp noise and easily causing wear on the fan blades, leading to dynamic imbalance or even damage to the fan blades. When the dust in the exhaust gases comes into contact with the fan blades, it easily adheres to the surface of the fan blades and forms scale, which in turn leads to dynamic imbalance of the fan blades. Dynamic imbalance of the fan blades will aggravate the vibration generated during the operation of the industrial fan.

[0025] Therefore, the present invention provides a vibration reduction and noise reduction device for industrial fans. By installing a filter separation mechanism on the air inlet side of the industrial fan, large particulate impurities and dust impurities in the exhaust gas to be drawn are filtered out in advance, thereby avoiding the fan blades being impacted and dynamic imbalance.

[0026] Example 1: like Figure 1 , Figure 3 As shown, this embodiment provides a vibration damping and noise reduction device for industrial fans, the device comprising: An inertial separation box 1 has a first air inlet 11 on one side and a first air outlet 12 on the other side along its length. The first air inlet 11 is used to receive the waste gas to be drawn in, and the first air outlet 12 is connected to the air inlet side of the industrial fan 2. A first baffle plate 13 is fixedly installed inside the inertial separation box 1. The projection of the first air inlet 11 along the length direction is located inside the first baffle plate 13, and a first channel 14 exists between the first baffle plate 13 and the inner sidewall of the inertial separation box 1. A slag collection bin 15 is provided at the lower part of the inertial separation box 1, and a slag discharge assembly is provided at the bottom of the slag collection bin 15.

[0027] Accordingly, the vibration reduction and noise reduction device for industrial fans provided in this embodiment, by setting an inertial separation box 1, uses the first baffle plate 13 to change the path of the exhaust gas to be drawn through the inertial separation box 1 (that is, to force the exhaust gas to be drawn to bypass the first baffle plate 13 and flow to the industrial fan 2 through the first channel 14). During the process of the exhaust gas to be drawn through the inertial separation box 1, large particulate impurities in the exhaust gas to be drawn collide with the baffle plate and fall into the slag collection bin 15 below. Therefore, this embodiment, by pre-separating large particulate impurities from the exhaust gas to be drawn in, avoids these impurities being drawn into the industrial fan 2 and impacting the fan blades, thereby avoiding sharp impact noise (i.e., reducing impact noise generation). Simultaneously, by preventing large particulate impurities from impacting the fan blades, wear and even damage caused by such impacts are avoided, which also helps extend the service life of the industrial fan 2. It is worth noting that the impact location of large particulate impurities on the fan blades is highly random, easily causing localized wear and breakage. The uneven distribution of damaged locations (uneven distribution along the circumference) leads to dynamic imbalance in the fan blades, resulting in more severe vibrations during subsequent rotation. This embodiment, by pre-separating large particulate impurities, directly avoids their impact on the fan blades. Therefore, the vibration damping and noise reduction device for the industrial fan provided in this embodiment can prevent the industrial fan 2 from experiencing increased vibration due to fan blade dynamic imbalance.

[0028] More preferably, there are multiple first flow barriers 13 and each first flow barrier 13 is arranged in an array along the length direction; Each of the first flow-blocking plates 13 is fixedly connected to the top plate and side plate of the inertial separation box 1, so that the first channel 14 is located at the bottom of the first flow-blocking plate 13; A second baffle plate 16 is also provided between two adjacent first baffle plates 13. The second baffle plate 16 is fixedly connected to the bottom plate and side plate of the inertial separation box 1, so that there is a second channel 17 between the top of the second baffle plate 16 and the top plate of the inertial separation box 1.

[0029] Accordingly, the vibration reduction and noise reduction device for industrial fans provided in this embodiment, by setting multiple first baffles 13 and setting second baffles 16 between adjacent first baffles 13, causes the exhaust gas to be drawn to undergo multiple turns during the process of passing through the inertial separation box 1, thereby optimizing the separation effect of large particulate impurities and ensuring that large particulate impurities will not be sucked into the industrial fan 2 under the suction of the industrial fan 2.

[0030] Example 2: like Figure 1 , Figures 3 to 5 As shown, this embodiment is based on embodiment 1, the difference being that in this embodiment: The vibration damping and noise reduction device also includes a dust filter; The dust filter includes a housing 41 and a filter element; The housing 41 is disc-shaped, and the filter element is installed inside the housing 41; A second air inlet 411 is provided on the lower end face of the housing 41, and the second air inlet 411 is connected to the first air outlet 12. A second air outlet 412 is provided on the upper end face of the housing 41, and the second air outlet 412 is connected to the air inlet side.

[0031] It should be understood that the purpose of setting up the dust filter in this embodiment is to filter out dust impurities in the exhaust gas to be drawn. Accordingly, the filter element used should have the ability to filter out dust impurities, such as filter elements made of non-woven fabric filter material, porous material filter material, etc.

[0032] Accordingly, the vibration reduction and noise reduction device for industrial fans provided in this embodiment connects a dust filter in series on the pipe connecting the inertial separation box 1 to the industrial fan 2. The filter element further filters out dust and impurities in the exhaust gas to be drawn, thereby preventing dust and impurities from entering the industrial fan 2 and adhering to the fan blades of the industrial fan 2. This avoids the rotational vibration caused by the dynamic imbalance of the fan blades after the industrial fan 2 has been running for a long time (as the running time of the industrial fan 2 increases, dust and impurities will gradually adhere to the fan blades to form scale. These scales are very easy to cause uneven distribution due to uneven adhesion or local breakage, which will lead to dynamic imbalance of the fan blades and aggravate the vibration during the rotation of the fan blades).

[0033] Preferably, the dust filter further includes a mounting frame, which includes a shaft 431 and at least four partitions 432 arranged in a circumferential array along the shaft 431; the filter element includes filter blocks 421 that correspond one-to-one with the partitions 432. The mounting frame is rotatably connected to the housing 41 via the shaft 431, and each of the partitions 432 is located inside the housing 41; the filter block 421 is installed between any two adjacent partitions 432; A dust outlet 413 is also provided on the lower end face of the housing 41.

[0034] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment, by rotating the shaft 431 of the mounting bracket, enables each filter block 421 to filter the exhaust gas drawn in by the industrial fan 2 through the second air inlet 411 and the second air outlet 412, and then rotates to the dust discharge port 413 to discharge the filtered dust and impurities. Compared with using a single filter element, this embodiment can achieve the switching of filtration and dust discharge for each filter block 421 based on multiple rotating filter blocks 421, thereby achieving self-maintenance of the filter blocks 421. Therefore, the vibration damping and noise reduction device for industrial fans provided in this embodiment can work continuously for a long time without stopping the machine for filter element maintenance (i.e., without stopping the suction fan to remove the filter element for dust removal). The rotation of the shaft 431 can be achieved, for example, by a drive motor 46, such as a servo motor, stepper motor, or other drive motor 46 capable of driving the shaft to rotate; this embodiment does not limit this.

[0035] More preferably, a dust collection hopper 414 is connected below the dust discharge port 413, and a dust discharge pipe 415 is connected to the lower part of the dust collection hopper 414.

[0036] Therefore, the dust and impurities falling from below the filter block 421 can be collected in the dust collection hopper 414 and discharged through the dust discharge pipe 415, making it convenient to uniformly process these filtered dust and impurities.

[0037] More preferably, there is a gap between the lower end face of the filter block 421 and the lower inner wall of the housing 41.

[0038] Therefore, when the exhaust gas to be drawn contains light floating impurities, the dust filter can also be used to filter out these light floating impurities in the exhaust gas to be drawn. The gap between the lower end face of the filter block 421 and the lower inner wall of the housing 41 can temporarily accommodate these light floating impurities. Then, these filtered light floating impurities can smoothly reach the dust discharge port 413 and be discharged as the mounting frame rotates.

[0039] Example 3: like Figure 1 , Figures 3 to 5 As shown, this embodiment is based on embodiment 2, the difference being that in this embodiment: The second air inlet 411 and the second air outlet 412 are both located within a first sector-shaped region centered on the axis of the shaft 431 and with the length of the partition 432 as its radius; the dust outlet 413 is located within a second sector-shaped region centered on the shaft 431 and with the length of the partition 432 as its radius; the first sector-shaped region and the second sector-shaped region satisfy the following relationship: , in, α This indicates the size of the central angle of the first sector.n Indicates the number of partitions. β This indicates the size of the central angle of the second sector. γ This represents the size of the central angle of the interval region between the first and second sector regions; The height of the partition 432 is equal to the inner cavity height of the housing 41, and the distance from the cross-sectional profile of the housing 41 in the first sector region and the interval region to the axis is equal to the length of the partition 432.

[0040] It should be understood that the term "height of partition 432" refers to the dimension of partition 432 along the length of shaft 431, the term "length of partition 432" refers to the distance from the end of partition 432 away from shaft 431 to the axis of shaft 431, and "interval region" refers to the sector region between the first sector region and the second sector region, and there are two such interval regions, located on both sides of the first sector region, and the central angles of the two interval regions may be unequal.

[0041] Accordingly, after determining the number of partitions 432, this embodiment selects appropriate central angle sizes for the first sector region, the second sector region, and the interval region based on the aforementioned relationship (i.e., determining the sizes of the second air inlet 411, the second air outlet 412, and the dust outlet 413, as well as the central angle size of the interval between the dust outlet 413 and the second air inlet 411). Accordingly, in the first sector region and the interval region (i.e., positions other than the second sector region), the upper and lower end faces of the partitions 432 respectively abut against the upper and lower inner walls of the housing 41 and form an airtight seal, and the end of the partition 432 away from the shaft 431 abuts against the housing. The inner peripheral wall of 41 forms an airtight seal, so that when both adjacent partitions 432 are located in the first sector area, airflow is only allowed to pass between the two adjacent partitions 432 from the second air inlet 411 and the second air outlet 412. Thus, during the rotation of the mounting bracket, the exhaust gas entering the dust filter through the second air inlet 411 can only be discharged from the second air outlet 412, and cannot bypass the partition 432 to be discharged through the dust outlet 413. In other words, the vibration damping and noise reduction device for industrial fans provided in this embodiment can prevent exhaust gas leakage during the process of filtering out and discharging dust impurities and light floating impurities in the exhaust gas to be sucked out.

[0042] It should be understood that in this embodiment, the industrial fan 2 continuously draws air. The setting of the second air inlet 411 and the second air outlet 412 should ensure that the airflow entering the housing 41 through the second air inlet 411 can always be discharged through the second air outlet 412, and there is no situation where the second air outlet 412 is continuously drawn while the second air inlet 411 is not connected.

[0043] Even better, such as Figure 4As shown, the filter block 421 is an elastic filter material; the dust filter also includes a support plate 44 corresponding to each filter block 421. For any two adjacent partitions 432, the filter block 421 is fixedly connected to the two adjacent partitions 432 at one end near the shaft 431, and fixedly connected to the corresponding support plate 44 at the other end away from the shaft 431. The support plate 44 is slidably connected to the shaft 431 (since the partitions 432 and the shaft 431 are fixedly connected, the slidable connection between the support plate 44 and the shaft 431 is also equivalent to the slidable connection with one of the two adjacent partitions 432). A compression spring 45 is provided between the two along the direction of relative sliding, and the compression spring 45 causes the support plate 44 to press against the inner peripheral wall of the housing 41. From one interval region to another, the distance from the cross-sectional profile of the housing 41 in the second sector region to the axis gradually increases and then gradually decreases, so that during the process of the filter block 421 rotating from one interval region to another, the filter block 421 is gradually stretched along the length direction of the compression spring 45 and then returns to its original length.

[0044] It should be understood that the support plate 44 only needs to be slidably connected to the shaft 431; this embodiment does not impose any restrictions on this, for example, in Figure 4 In the middle, a support rod 433 extends radially from the shaft 431, and a sleeve 441 extends from the support plate 44. The sleeve 441 is fitted onto the support rod 433 to achieve a sliding connection between the support plate 44 and the shaft 431.

[0045] Preferably, the filter block 421 is a porous elastic filter material, such as porous polyurethane, porous thermoplastic elastomer and porous silicone.

[0046] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment, by setting the cross-sectional shape of the second sector region to a shape in which the distance from each point on the cross-sectional outline to the axis of the shaft 431 gradually increases and then gradually decreases, enables any filter block 421, after rotating into the second sector region, to have its corresponding support plate 44 first gradually pushed outward under the action of the compression spring 45 and kept pressed against the gradually expanding inner peripheral wall of the housing 41, and then gradually compressed under the constraint of the gradually contracting inner peripheral wall of the housing 41. As the filter block 421 slides toward the shaft 431, it is gradually stretched and then gradually retracts to recover. The deformation caused by this process changes the pore structure of the filter block 421, making it easier for dust and impurities that have entered the pore structure of the filter block 421 to fall off and be discharged. (For other filter materials such as non-woven filter materials, the deformation is usually achieved by folding and unfolding the corrugated structure. Correspondingly, this deformation causes the impurities that have been intercepted and accumulated on the lower surface of the filter block 421 to fall off by changing the morphology of the lower surface of the filter block 421.)

[0047] More preferably, a third air inlet 416 is also provided on the upper end surface of the housing 41, and the third air inlet 416 is located in the second sector area. A backflush pipe 417 is connected to the third air inlet 416, and a dust exhaust fan 418 that blows air toward the third air inlet 416 is installed in the backflush pipe 417.

[0048] Similarly, in the arrangement of the third air inlet 416, it should be ensured that the gas entering the housing 41 through the third air inlet 416 can always be discharged through the dust outlet 413.

[0049] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment, by setting up a dust removal fan 418, can cause dust and light floating impurities accumulated on the lower surface of the filter block 421 to detach from the lower surface of the filter block 421, and / or cause dust and impurities entering the internal pores of the filter block 421 to fall out from the inside of the filter block 421 through the lower surface of the filter block 421. It is worth noting that conventional backflushing dust removal operations of the filter block 421 usually require high-speed airflow to achieve dust removal (i.e., high-speed airflow is required to forcibly blow away impurities). However, in this embodiment, during the process of the porous elastic filter block 421 being stretched and restored, the change in the shape of its internal pores can cause the dust and impurities entering the pores to loosen and fall off. Combined with the blowing action of the dust removal fan 418, a better backflushing dust removal effect can be achieved based on a relatively low-power dust removal fan 418, that is, high-speed airflow is not required for backflushing. Accordingly, setting up the dust removal fan 418 for backflushing dust removal will not introduce significant noise.

[0050] Example 4: like Figures 1 to 3 As shown, this embodiment is based on embodiment 1, the difference being that in this embodiment: The vibration damping and noise reduction device also includes a soundproof box 5; The industrial fan 2, the inertial separation box 1, and the dust filter are all installed inside the soundproof box 5; the wall panel of the soundproof box 5 is a composite soundproof board.

[0051] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment, by installing all the above-mentioned structures inside the soundproof box 5, can, on the one hand, reduce the outward transmission of noise generated by the industrial fan 2 (blocking or absorbing it), and on the other hand, the soundproof box 5 also serves a waterproof function, which helps to extend the service life of the industrial fan 2. Among these features, Figure 1 To better showcase the internal structure of the soundproof enclosure 5, some of the wall panels of the soundproof enclosure 5 have been cut out and hidden.

[0052] Specifically, the composite sound insulation board includes three stainless steel plate layers 51, and a filling layer 52 is provided between any two adjacent stainless steel plate layers 51. The filling layer 52 is selected from one or more of nano rubber thermal insulation and sound insulation board and polyester fiber sound absorption board.

[0053] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment can effectively block the medium and high frequency noise generated during the operation of the industrial fan 2 by setting the stainless steel plate layer 51; by setting the filling layer 52 between adjacent stainless steel plate layers 51, the penetration of sound waves can be further weakened, making the overall sound insulation performance better than that of a single sound insulation layer structure. In addition, the three layers of stainless steel plate layers 51 can also strengthen the structure of the sound insulation box 5, so that the composite sound insulation board has good overall rigidity and strength, and can better withstand the vibration and installation load generated by the internal industrial fan 2 and other structures.

[0054] More preferably, the soundproof box 5 is mounted on the ground 6 via multiple buffer components; The buffer assembly includes a spring 53 and an elastic covering layer 54, with the two ends of the spring 53 connected to the ground 6 and the soundproof box 5, respectively. The elastic covering layer 54 covers the outside of the spring 53.

[0055] Preferably, there are multiple buffer components.

[0056] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment can effectively absorb and attenuate the vibration transmitted from the industrial fan 2 and other structures to the soundproof box 5 by setting a buffer component, thereby delaying the fatigue and loosening of each component and improving the overall service life; by setting an elastic covering layer 54 to cover the spring 53, the spring 53 can be protected to avoid corrosion caused by the exposure of the spring 53, and the high-frequency noise caused by the vibration of the spring 53 itself can also be suppressed.

[0057] Example 5: like Figures 6 to 9 As shown, this embodiment is based on embodiment 1, the difference being that in this embodiment: A slag discharge port 18 is provided at the bottom of the slag collection bin 15; the slag discharge assembly includes a pusher cylinder 31, a first abutment plate 32, and a second abutment plate 33; The first abutment plate 32 is located below the slag discharge port 18 and is fixedly connected to the inertial separation box 1; The second abutment plate 33 is located on one side of the slag discharge port 18 and is fixedly connected to the inertial separation box 1. The lower end face of the second abutment plate 33 is flush with the slag discharge port 18. A third abutment plate 34 is also fixedly connected to the push cylinder 31, and the upper end surface of the third abutment plate 34 is flush with the upper end surface of the push cylinder 31. The pusher 31 is slidably installed between the first abutment plate 32 and the slag discharge port 18, such that the upper end face of the pusher 31 is flush with the slag discharge port 18, and the lower end face of the pusher 31 is flush with the upper end face of the first abutment plate 32. By sliding the pusher 31, the pusher 31 can be switched between a slag receiving position, a slag pushing position, and a slag discharging position; at the slag receiving position (e.g., ... Figure 7 As shown), the upper end of the pusher cylinder 31 is connected to the slag discharge port 18 and the lower end is blocked by the first abutment plate 32; at the slag pushing position (e.g. Figure 8 As shown), the lower end of the pusher 31 is blocked by the first abutment plate 32, the upper end is blocked by the second abutment plate 33, and the slag discharge port 18 is blocked by the third abutment plate 34; at the slag discharge position (e.g. Figure 9 As shown), the slag discharge port 18 is blocked by the third abutment plate 34, and the lower end of the pusher cylinder 31 is open.

[0058] It should be understood that the direction in which the pusher 31 slides relative to the first abutment plate 32 is the width direction of the inertial separation box 1. The sliding action of the pusher 31 is realized by the telescopic mechanism 37, such as a cylinder, hydraulic cylinder, linear motor or other mechanism capable of reciprocating linear motion, which is not limited in this embodiment.

[0059] Accordingly, the vibration damping and noise reduction device for industrial fans provided in this embodiment, through the sliding pusher 31, allows the pusher 31 to be positioned below the slag discharge port 18 and to receive large particulate impurities from the slag discharge port 18. Then, the pusher 31 is pushed to the slag discharge position, blocking the slag discharge port 18 and ensuring that the inertial separation box 1 does not leak (i.e., under the suction action of the industrial fan 2, the gas source of the first outlet 12 is only the first inlet 11 and will not draw gas in from the slag discharge port 18). Then, the pusher 31 is pushed to the slag discharge position to discharge the large particulate impurities falling into the pusher 31. After slag discharge, it returns to the slag receiving position to receive large particulate impurities from the slag discharge port 18 again. Throughout the entire process, the inertial separation box 1 will not leak, ensuring the effective suction of the exhaust gas by the industrial fan 2.

[0060] Preferably, a slag discharge pipe 35 is fixedly installed below the slag discharge position. When the pusher cylinder 31 is located at the slag discharge position, large particles of impurities falling from the pusher cylinder 31 are discharged through the slag discharge pipe 35. Preferably, a plurality of buffer plates 36 are also fixedly installed in the slag discharge pipe 35, and each buffer plate 36 is inclined downward. More preferably, as Figures 7 to 9 As shown, the buffer plates 36 are staggered on both sides of the slag discharge pipe 35. The upper surface of the buffer plate 36 is a flexible buffer layer, and the material of the flexible buffer layer is selected from one or more of rubber, silicone, TPU, and TPE.

[0061] It should be understood that, with the soundproof box 5 installed, the slag discharge pipe 35 extends through the bottom of the soundproof box 5, thereby discharging large particulate impurities to the outside of the soundproof box 5, avoiding the need to open the soundproof box 5 to clean the large particulate impurities. By setting buffer plates 36 in the slag discharge pipe 35, on the one hand, the kinetic energy of large particulate impurities falling can be buffered, thereby avoiding impact noise generated by large particulate impurities falling. On the other hand, the staggered arrangement of the buffer plates 36 also helps to isolate the impact noise generated by large particulate impurities in the inertial separation box 1 impacting the first baffle plate 13 and / or the second baffle plate 16, reducing its transmission to the outside of the soundproof box 5.

[0062] It should be understood that, unless otherwise specified, in this application, the term "rotational connection" refers to a connection where the two parts can only rotate relative to each other, such as the rotational arrangement of a hole and a shaft, which can be achieved by setting a shoulder on the shaft and a limiting groove in the hole to restrict axial relative movement; the terms "sliding connection" and "sliding installation" refer to a connection where the two parts can only slide relative to each other, such as dovetail grooves, T-slots, and other structures.

[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vibration damping and noise reduction device for industrial fans, characterized in that, include: An inertial separation box (1) has a first air inlet (11) on one side of its length and a first air outlet (12) on the other side; the first air inlet (11) is used to access the waste gas to be sucked up, and the first air outlet (12) is connected to the air inlet side of the industrial fan (2). A first baffle plate (13) is fixedly installed inside the inertial separation box (1). The projection of the first air inlet (11) along the length direction is located inside the first baffle plate (13), and there is a first channel (14) between the first baffle plate (13) and the inner wall of the inertial separation box (1). A slag collection bin (15) is provided at the lower part of the inertial separation box (1), and a slag discharge assembly is provided at the bottom of the slag collection bin (15).

2. The vibration damping and noise reduction device according to claim 1, characterized in that, The first flow barrier (13) is multiple and each of the first flow barrier (13) is arranged in an array along the length direction; Each of the first flow-blocking plates (13) is fixedly connected to the top plate and side plate of the inertial separation box (1), so that the first channel (14) is located at the bottom of the first flow-blocking plate (13); A second baffle plate (16) is provided between two adjacent first baffle plates (13). The second baffle plate (16) is fixedly connected to the bottom plate and side plate of the inertial separation box (1), so that there is a second channel (17) between the top of the second baffle plate (16) and the top plate of the inertial separation box (1).

3. The vibration damping and noise reduction device according to claim 1, characterized in that, It also includes dust filters; The dust filter includes a housing (41) and a filter element; The housing (41) is disc-shaped, and the filter element is installed inside the housing (41); A second air inlet (411) is provided on the lower end face of the housing (41), and the second air inlet (411) is connected to the first air outlet (12). A second air outlet (412) is provided on the upper end face of the housing (41), and the second air outlet (412) is connected to the air inlet side.

4. The vibration damping and noise reduction device according to claim 3, characterized in that, The dust filter also includes a mounting frame, which includes a shaft (431) and at least four partitions (432) arranged in a circumferential array along the shaft (431); the filter element includes filter blocks (421) that correspond one-to-one with the partitions (432). The mounting bracket is rotatably connected to the housing (41) via the shaft (431), and each of the partitions (432) is located inside the housing (41); the filter block (421) is installed between any two adjacent partitions (432). A dust outlet (413) is also provided on the lower end face of the housing (41).

5. The vibration damping and noise reduction device according to claim 4, characterized in that, There is a gap between the lower end face of the filter block (421) and the lower inner wall of the housing (41).

6. The vibration damping and noise reduction device according to claim 4, characterized in that, A dust collection hopper (414) is connected below the dust discharge port (413), and a dust discharge pipe (415) is connected to the lower part of the dust collection hopper (414).

7. The vibration damping and noise reduction device according to claim 4, characterized in that, The second air inlet (411) and the second air outlet (412) are both located within a first sector-shaped region centered on the axis of the shaft (431) and with the length of the partition (432) as its radius; the dust outlet (413) is located within a second sector-shaped region centered on the shaft (431) and with the length of the partition (432) as its radius; the first sector-shaped region and the second sector-shaped region satisfy the following relationship: ， in, α This indicates the size of the central angle of the first sector. n Indicates the number of partitions. β This indicates the size of the central angle of the second sector. γ This represents the size of the central angle of the interval region between the first and second sector regions; The height of the partition (432) is equal to the inner cavity height of the housing (41), and the distance from the cross-sectional profile of the housing (41) in the first sector region and the interval region to the axis is equal to the length of the partition (432).

8. The vibration damping and noise reduction device according to claim 7, characterized in that, The filter block (421) is an elastic filter material; the dust filter also includes a support plate (44) that corresponds one-to-one with the filter block (421). For any two adjacent partitions (432) of the filter block (421), the end of the filter block (421) near the shaft (431) is fixedly connected to the two adjacent partitions (432), and the end away from the shaft (431) is fixedly connected to the corresponding support plate (44). The support plate (44) is slidably connected to the shaft (431), and a compression spring (45) is provided between the two in the direction of relative sliding. The compression spring (45) causes the support plate (44) to press against the inner peripheral wall of the housing (41). From one interval region to another, the distance from the cross-sectional profile of the housing (41) in the second sector region to the axis gradually increases and then gradually decreases, so that during the process of the filter block (421) rotating from one interval region to another, the filter block (421) is gradually stretched along the length direction of the compression spring (45) and then recovers.

9. The vibration damping and noise reduction device according to claim 7, characterized in that, A third air inlet (416) is also provided on the upper surface of the housing (41), and the third air inlet (416) is located in the second sector area; A backflush pipe (417) is connected to the third air inlet (416), and a dust exhaust fan (418) that blows air toward the third air inlet (416) is installed in the backflush pipe (417).

10. The vibration damping and noise reduction device according to claim 3, characterized in that, It also includes a soundproof box (5); The industrial fan (2), the inertial separation box (1) and the dust filter are all installed inside the soundproof box (5); the wall panel of the soundproof box (5) is a composite soundproof board.

11. The vibration damping and noise reduction device according to claim 10, characterized in that, The composite sound insulation board includes three stainless steel plate layers (51), and a filling layer (52) is provided between any two adjacent stainless steel plate layers (51). The filling layer (52) is selected from one or more of nano rubber thermal insulation and sound insulation board and polyester fiber sound absorption board.

12. The vibration damping and noise reduction device according to claim 10, characterized in that, The soundproof box (5) is mounted on the ground (6) by multiple buffer components; The buffer assembly includes a spring (53) and an elastic covering layer (54), with the two ends of the spring (53) connected to the ground (6) and the soundproof box (5), respectively. The elastic covering layer (54) covers the outside of the spring (53).

13. The vibration damping and noise reduction device according to claim 1, characterized in that, A slag discharge port (18) is provided at the bottom of the slag collection bin (15); the slag discharge assembly includes a pusher (31), a first abutment plate (32), and a second abutment plate (33). The first abutment plate (32) is located below the slag discharge port (18) and is fixedly connected to the inertial separation box (1); The second abutment plate (33) is located on one side of the slag discharge port (18) and is fixedly connected to the inertial separation box (1). The lower end face of the second abutment plate (33) is flush with the slag discharge port (18). A third abutment plate (34) is also fixedly connected to the push cylinder (31), and the upper end face of the third abutment plate (34) is flush with the upper end face of the push cylinder (31). The pusher (31) is slidably installed between the first abutment plate (32) and the slag discharge port (18), such that the upper end face of the pusher (31) is flush with the slag discharge port (18), and the lower end face of the pusher (31) is flush with the upper end face of the first abutment plate (32). By sliding the pusher (31), the pusher (31) can be switched between the slag receiving position, the slag pushing position, and the slag discharging position. In the slag receiving position, the upper end of the pusher (31) is connected to the slag discharge port (18) and the lower end is blocked by the first abutment plate (32). In the slag pushing position, the lower end of the pusher (31) is blocked by the first abutment plate (32), the upper end is blocked by the second abutment plate (33), and the slag discharge port (18) is blocked by the third abutment plate (34). In the slag discharging position, the slag discharge port (18) is blocked by the third abutment plate (34), and the lower end of the pusher (31) is open.

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