A shock-absorbing and noise-reducing device for industrial fans

Abstract

The present application relates to the technical field of waste gas treatment, and particularly relates to a shock-absorbing and noise-reducing device for an industrial fan. The device comprises: an inertial separation box, a first air inlet being formed on one side of the inertial separation box in the length direction, and a first air outlet being formed on the other side; the first air inlet is used for connecting to the waste gas to be sucked, and the first air outlet is connected to the air inlet side of the industrial fan; a first flow resistance plate is fixedly installed inside the inertial separation box, the projection of the first air inlet in the length direction is located in the first flow resistance plate, and a first channel exists between the first flow resistance plate and the inner side wall of the inertial separation box; a slag collecting bin is arranged at the lower part of the inertial 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 the waste gas to be sucked in advance while continuously sucking the waste gas to be sucked, thereby avoiding sharp impact noise caused by the impact of the fan blade, and avoiding vibration and noise intensification caused by the unbalance of the fan blade.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a damping and noise reduction device for an industrial fan. BACKGROUND

[0002] In the process of production and manufacturing, production enterprises will often produce harmful waste gas that cannot be directly discharged. Therefore, industrial fans are usually used to suck these waste gases out of the factory building and transport them to a dedicated waste gas treatment device for harmless treatment.

[0003] However, due to its large power, high working speed and vibration during work, the industrial fan will produce a lot of noise during work. Even if the industrial fan is installed outdoors, it will still disturb the workers in the factory and the surrounding residents. Moreover, the vibration during the work of the industrial fan can also cause damage to the fan.

[0004] To this end, Chinese patent CN202310250690.5 provides a damping and noise reduction device for an axial flow fan, which buffers and eliminates the vibration generated by the motor during work, thereby reducing the damage to the fan caused by long-term work vibration; by setting up sound-absorbing panels, the noise generated by the rotation of the blades is effectively absorbed, thereby improving the working environment.

[0005] However, some waste gases contain particulate impurities and dust (such as waste gases generated in scenes such as grinding, cutting, and mining). During the suction process of the industrial fan, the particulate impurities contained in the waste gas will hit the fan blades, causing sharp noise and easily causing blade wear and tear, which can lead to unbalanced motion and even damage to the blades. The dust in the waste gas is easily attached to the surface of the blade to form scaling, which can cause the blade to be unbalanced; blade imbalance can exacerbate the vibration generated during the work of the industrial fan. SUMMARY

[0006] The present application aims to provide a damping and noise reduction device for an industrial fan, which can at least partially overcome the above technical problems. While continuously sucking the waste gas to be sucked, the device can filter out large particulate impurities and dust impurities in the waste gas to be sucked in advance, thereby avoiding the sharp impact noise caused by the impact of the blades and avoiding the exacerbation of vibration and noise caused by the unbalanced motion of the blades (such as the unbalanced motion of the blades caused by impact damage to the blades and dust attachment to the blades).

[0007] The application provides a shock-absorbing and noise-reducing device for an industrial fan, which comprises: an inertial separation box, a first air inlet is formed on one side of the inertial separation box in the length direction, and a first air outlet is formed on the other side; the first air inlet is used for connecting to the exhaust gas to be pumped, and the first air outlet is connected to the air inlet side of the industrial fan; a first flow resistance plate is fixedly installed inside the inertial separation box, the projection of the first air inlet along the length direction is located in the first flow resistance plate, and a first channel exists between the first flow resistance plate and the inner side wall of the inertial separation box; a slag collecting bin is arranged at the lower part of the inertial separation box, and a slag discharging assembly is arranged at the bottom of the slag collecting bin.

[0008] Further, the first flow resistance plate is a plurality of first flow resistance plates, and each first flow resistance plate is arranged in an array along the length direction; each first flow resistance plate is fixedly connected with the top plate and the side plate of the inertial separation box, so that the first channel is located at the bottom of the first flow resistance plate; a second flow resistance plate is further arranged between two adjacent first flow resistance plates, the second flow resistance plate is fixedly connected with the bottom plate and the side plate of the inertial separation box, so that a second channel exists between the top of the second flow resistance plate and the top plate of the inertial separation box.

[0009] Further, the shock-absorbing and noise-reducing device further comprises a dust filter; the dust filter comprises a shell and a filter core; the shell is in the shape of a pie, and the filter core is installed inside the shell; a second air inlet is formed on the lower end face of the shell, the second air inlet is connected to the first air outlet, a second air outlet is formed on the upper end face of the shell, and the second air outlet is connected to the air inlet side.

[0010] Further, the dust filter further comprises a mounting bracket, the mounting bracket comprises a shaft and at least four partition plates arranged in an array along the circumference of the shaft; the filter core comprises a filter block corresponding to each partition plate; the mounting bracket is rotationally connected to the shell through the shaft, and each partition plate is located inside the shell; the filter block is installed between any two adjacent partition plates; and a dust discharge port is further formed on the lower end face of the shell.

[0011] Further, a gap exists between the lower end face of the filter block and the inner side wall of the lower side of the shell.

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

[0013] Further, the second air inlet and the second air outlet are located in a first fan-shaped area with the axis of the shaft as the center and the length of the partition plate as the radius; the dust discharge port is located in a second fan-shaped area with the shaft as the center and the length of the partition plate as the radius; and the first fan-shaped area and the second fan-shaped area satisfy the following relationship:

[0014] ,

[0015] wherein, α represents the central angle size of the first sector area, n represents the number of partitions, β represents the central angle size of the second sector area, gamma represents the central angle size of the interval area between the first sector area and the second sector area; the height of the partition is equal to the height of the inner cavity of the shell, and the distance from the cross-sectional profile of the shell in the first sector area and the interval area to the axis is equal to the length of the partition.

[0016] Further, the filter block is an elastic filter material; the dust filter further comprises a support plate corresponding to each filter block; for the filter block between any two adjacent partitions, the end of the filter block close to the shaft is fixedly connected with the two adjacent partitions, and the end of the filter block away from the shaft is fixedly connected with the corresponding support plate; the support plate and the shaft are in sliding connection, and a compression spring is arranged between the support plate and the shaft along the direction of relative sliding, so that the support plate abuts against the inner circumferential wall of the shell; from one interval area to another interval area, the distance from the cross-sectional profile of the shell in the second sector area to the axis first gradually increases and then gradually decreases, so that the filter block is gradually elongated along the length direction of the compression spring and then restored in the process of rotating from one interval area to another interval area.

[0017] Further, a third air inlet is further formed on the upper end surface of the shell, and the third air inlet is located in the second sector area; a back blowing pipe is connected to the third air inlet, and a dust removal fan for blowing air toward the third air inlet is installed in the back blowing pipe.

[0018] Further, the shock-absorbing and noise-reducing device further comprises a soundproof box; the industrial fan, the inertia separation box and the dust filter are all installed in the soundproof box; the wall plate of the soundproof box is a composite soundproof plate.

[0019] Further, the composite soundproof plate comprises three layers of stainless steel plate layers, and a filling layer is arranged between any two adjacent stainless steel plate layers, and the filling layer is selected from one or more of a nano rubber heat insulation soundproof plate and a polyester fiber sound absorption plate.

[0020] Further, the soundproof box is installed on the ground through a plurality of buffer assemblies; the buffer assembly comprises a spring and an elastic cladding layer, two ends of the spring are respectively connected to the ground and the soundproof box; and the elastic cladding layer is cladded on the outside of the spring.

[0021] Further, a slag discharge port is arranged at the bottom of the slag collecting bin; the slag discharge assembly comprises a pushing cylinder, a first abutting plate and a second abutting plate; the first abutting plate is arranged below the slag discharge port and fixedly connected with the inertia separation box; the second abutting plate is arranged at one side of the slag discharge port and fixedly connected with the inertia separation box, and the lower end surface of the second abutting plate is flush with the slag discharge port; a third abutting plate is further fixedly connected with the pushing cylinder, and the upper end surface of the third abutting plate is flush with the upper end surface of the pushing cylinder; the pushing cylinder is slidingly arranged between the first abutting plate and the slag discharge port, so that the upper end surface of the pushing cylinder is flush with the slag discharge port, and the lower end surface of the pushing cylinder is flush with the upper end surface of the first abutting plate; the pushing cylinder can be switched between a slag receiving position, a slag pushing position and a slag discharging position by sliding; in the slag receiving position, the upper end of the pushing cylinder is communicated with the slag discharge port, and the lower end is blocked by the first abutting plate; in the slag pushing position, the lower end of the pushing cylinder is blocked by the first abutting plate, the upper end is blocked by the second abutting plate, and the slag discharge port is blocked by the third abutting plate; in the slag discharging position, the slag discharge port is blocked by the third abutting plate, and the lower end of the pushing cylinder is open.

[0022] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0023] 1. The shock-absorbing and noise-reducing device for the industrial fan provided by the embodiment of the present disclosure can preliminarily separate large-particle impurities in the waste gas to be sucked out by arranging the inertia separation box, thereby avoiding the large-particle impurities from being sucked into the industrial fan and hitting the fan blades, so as to avoid the generation of sharp impact noise, and at the same time, since the large-particle impurities are avoided from hitting the fan blades, the wear and even damage of the fan blades caused by the impact of the large-particle impurities are avoided, which is also beneficial to prolong the service life of the industrial fan.

[0024] 2. The shock-absorbing and noise-reducing device for the industrial fan provided by the embodiment of the present disclosure can further filter dust impurities in the waste gas to be sucked out by arranging the dust filter in series on the pipeline connecting the inertia separation box to the industrial fan, thereby avoiding the dust impurities from entering the industrial fan and adhering to the fan blades of the industrial fan, and avoiding the rotational vibration of the industrial fan caused by the dynamic imbalance of the fan blades after the industrial fan is operated for a long time.

[0025] 3. The shock-absorbing and noise-reducing device for the industrial fan provided by the embodiment of the present disclosure can gradually stretch and then gradually recover the elastic filter block during the rotation of the filter block through the second fan-shaped area by arranging the cross-sectional shape of the second fan-shaped area as a shape in which the distance from each point on the cross-sectional contour line to the shaft axis gradually increases first and then gradually decreases, so that the deformation effect generated in this process changes the pore structure of the filter block, and the dust impurities entering the pore structure of the filter block are more likely to fall out. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0027] Figure 1 A perspective view of the shock-absorbing and noise-reducing device for industrial fan according to the embodiments of the application;

[0028] Figure 2 A perspective view of the shock-absorbing and noise-reducing device for industrial fan according to the embodiments of the application; Figure 1 A partial enlarged view of the A area;

[0029] Figure 3 A perspective view of the shock-absorbing and noise-reducing device for industrial fan according to the embodiments of the application; Figure 1 A longitudinal sectional view of the shock-absorbing and noise-reducing device for industrial fan according to the embodiments of the application;

[0030] Figure 4 A transverse sectional view of the dust filter according to the embodiments of the application;

[0031] Figure 5 Another transverse sectional view of the dust filter according to the embodiments of the application;

[0032] Figure 6 A schematic view of the slag collecting bin provided with a slag discharging assembly at the bottom according to the embodiments of the application;

[0033] Figure 7 A schematic view of the filter cartridge located at the slag receiving position according to the embodiments of the application;

[0034] Figure 8 A schematic view of the filter cartridge located at the slag pushing position according to the embodiments of the application;

[0035] Figure 9 A schematic view of the filter cartridge located at the slag discharging position according to the embodiments of the application.

[0036] Markings in the drawings and corresponding names of parts:

[0037] 1-inertial separation tank; 11-first air inlet; 12-first air outlet; 13-first baffle; 14-first channel; 15-slag collection bin; 16-second baffle; 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-expansion mechanism; 41-housing; 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-back flushing pipe; 418-dust removal fan; 421-filter block; 431-shaft; 432-baffle; 433-brace; 44-supporting plate; 441-sleeve; 45-compression spring; 46-driving motor; 5-soundproof box; 51-stainless steel layer; 52-filling layer; 53-spring; 54-elastic covering layer; 6-ground. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application clearer, further detailed description will be given below in combination with examples and drawings. The schematic embodiments of the present application and their descriptions are only used to explain the present application, and do not limit the present application. It should be noted that the present application has been in the actual research and development stage.

[0039] Some waste gas contains particulate impurities and dust (such as waste gas generated in scenes such as grinding, cutting and mining), and the particulate impurities contained in the waste gas will impact the fan blades during the suction process of the industrial fan, causing sharp noise and easily causing blade wear and imbalance, and even blade damage. When the dust in the waste gas contacts the blade, it is easy to adhere to the surface of the blade to form scaling, which will cause the blade to be unbalanced. Blade imbalance will exacerbate the vibration generated during the operation of the industrial fan.

[0040] Therefore, the present application provides a shock-absorbing and noise-reducing device for an industrial fan, which installs a filtering and separating mechanism on the air inlet side of the industrial fan to filter out large particulate impurities and dust impurities in the waste gas to be sucked in advance, thereby avoiding the impact on the blades and the imbalance of the blades.

[0041] Example 1

[0042] As shown in Figure 1 , Figure 3 , the present embodiment provides a shock-absorbing and noise-reducing device for an industrial fan, which comprises:

[0043] An inertial separation tank 1 is provided with a first air inlet 11 on one side in the length direction and a first air outlet 12 on the other side; the first air inlet 11 is used to introduce waste gas to be sucked, and the first air outlet 12 is connected to the air inlet side of the industrial fan 2;

[0044] A first baffle plate 13 is fixedly installed inside the inertial separation box 1, and the projection of the first air inlet 11 along the length direction is located in the first baffle plate 13, and a first passage 14 exists between the first baffle plate 13 and the inner side wall of the inertial separation box 1.

[0045] A slag collecting bin 15 is arranged at the lower part of the inertial separation box 1, and a slag discharging assembly is arranged at the bottom of the slag collecting bin 15.

[0046] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment changes the path of the to-be-sucked exhaust gas passing through the inertial separation box 1 (i.e. forces the to-be-sucked exhaust gas to flow to the industrial fan 2 through the first passage 14 by bypassing the first baffle plate 13) by arranging the inertial separation box 1 and the first baffle plate 13, so that the large-particle impurities in the to-be-sucked exhaust gas impact the baffle plate and fall into the slag collecting bin 15 below during the process of the to-be-sucked exhaust gas passing through the inertial separation box 1. Thus, the embodiment separates the large-particle impurities in the to-be-sucked exhaust gas in advance, thereby avoiding the large-particle impurities from being sucked into the industrial fan 2 to impact the fan blade, thereby avoiding the generation of sharp impact noise (i.e. reducing the generation of impact noise), and at the same time, since the impact of the large-particle impurities on the fan blade is avoided, the wear and even damage of the fan blade caused by the impact of the large-particle impurities is avoided, accordingly, it is also beneficial to prolong the service life of the industrial fan 2. It is worth noting that the position of the large-particle impurities impacting the fan blade has great randomness, and thus it is easy to cause local wear and rupture of the fan blade, and the uneven distribution (uneven distribution along the circumferential direction) of the damaged position will make the fan blade unbalanced, and thus in the subsequent rotation process of the fan blade, more intense vibration will be generated due to the unbalance, and the embodiment separates the large-particle impurities in advance, thereby directly avoiding the impact of the large-particle impurities on the fan blade, and thus the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment can avoid the vibration intensification of the industrial fan 2 caused by the unbalance of the fan blade.

[0047] More preferably, the first baffle plate 13 is a plurality of and each first baffle plate 13 is arranged along the length direction in an array;

[0048] Each first baffle plate 13 is fixedly connected with the top plate and the side plate of the inertial separation box 1, so that the first passage 14 is located at the bottom of the first baffle plate 13;

[0049] A second baffle plate 16 is further arranged between two adjacent first baffle plates 13, the second baffle plate 16 is fixedly connected with the bottom plate and the side plate of the inertial separation box 1, so that a second passage 17 exists between the top of the second baffle plate 16 and the top plate of the inertial separation box 1.

[0050] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment is characterized in that: a plurality of first flow resistance plates 13 are arranged, and a second flow resistance plate 16 is arranged between adjacent first flow resistance plates 13, so that the waste gas to be sucked passes through the inertial separation box 1 and experiences multiple turns, thereby optimizing the separation effect of large-particle impurities and ensuring that the large-particle impurities will not be sucked into the industrial fan 2 under the action of the industrial fan 2.

[0051] Embodiment 2:

[0052] As shown in Figure 1 , Figure 3 to 5 the embodiment is based on embodiment 1, and the difference lies in that, in the embodiment:

[0053] The shock-absorbing and noise-reducing device further comprises a dust filter.

[0054] The dust filter comprises a shell 41 and a filter core.

[0055] The shell 41 is in the shape of a pie, and the filter core is installed inside the shell 41.

[0056] A second air inlet 411 is formed in the lower end surface of the shell 41, the second air inlet 411 is connected to the first air outlet 12, a second air outlet 412 is formed in the upper end surface of the shell 41, and the second air outlet 412 is connected to the air inlet side.

[0057] It should be understood that the purpose of arranging the dust filter in the embodiment is to filter dust impurities in the waste gas to be sucked, and accordingly, the filter core used should have the ability to filter dust impurities, such as filter cores made of non-woven fabric filter material, porous material filter material, etc.

[0058] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment is characterized in that: a dust filter is connected in series on the pipeline connecting the inertial separation box 1 to the industrial fan 2, and a filter core is used to further filter dust impurities in the waste gas to be sucked, thereby avoiding the dust impurities from entering the industrial fan 2 and adhering to the fan blades of the industrial fan 2, and avoiding the rotational vibration caused by the imbalance of the fan blades after the industrial fan 2 runs for a long time (as the running time of the industrial fan 2 increases, dust impurities will gradually adhere to the fan blades to form fouling, which is prone to uneven distribution due to uneven adhesion or local shedding, thereby causing the imbalance of the fan blades and intensifying the vibration during the rotation of the fan blades).

[0059] Preferably, the dust filter further comprises a mounting bracket, the mounting bracket comprises a shaft 431 and at least four partition plates 432 arranged in a circumferential array along the shaft 431; and the filter core comprises a filter block 421 corresponding to each partition plate 432.

[0060] The mounting frame is rotatably connected with the shell 41 through the shaft 431, and each partition plate 432 is located inside the shell 41; the filter block 421 is arranged between any two adjacent partition plates 432.

[0061] A dust discharging port 413 is further arranged at the lower end surface of the shell 41.

[0062] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment can make each filter block 421 pass through the positions of the second air inlet 411 and the second air outlet 412 in turn to filter the to-be-exhausted waste gas sucked by the industrial fan 2, and then rotate to the dust discharging port 413 to discharge the filtered dust and impurities. Compared with using a single filter element, the embodiment can realize the switching of the filtering and dust discharging of each filter block 421 based on the plurality of filter blocks 421 rotating, thereby realizing the self-maintenance of the filter block 421. Thus, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment can work continuously for a long time without stopping for filter element maintenance (i.e., without stopping the suction fan to remove the filter element for dust removal work). The rotating action of the shaft 431 can be realized by a driving motor 46, such as a servo motor, a stepping motor, or a driving motor 46 capable of driving the shaft to rotate, and the embodiment does not limit this.

[0063] More preferably, a dust collecting hopper 414 is connected below the dust discharging port 413, and a dust discharging pipe 415 is connected to the lower part of the dust collecting hopper 414.

[0064] Thus, the dust and impurities falling from the filter block 421 can be collected in the dust collecting hopper 414 and discharged through the dust discharging pipe 415, facilitating the unified treatment of the filtered dust and impurities.

[0065] More preferably, a gap exists between the lower end surface of the filter block 421 and the inner wall of the lower side of the shell 41.

[0066] Thus, in the case that the to-be-exhausted waste gas contains light floating impurities, the dust filter can also be used to filter out these light floating impurities in the to-be-exhausted waste gas, and the gap between the lower end surface of the filter block 421 and the inner wall of the lower side of the shell 41 can temporarily accommodate such light floating impurities, so that these filtered light floating impurities can smoothly reach the dust discharging port 413 position for discharge through the rotating action of the mounting frame.

[0067] Embodiment 3:

[0068] As shown in FIG. 1, Figure 1 , Figure 3 to 5 Based on Embodiment 2, the difference between the embodiment is that, in the embodiment:

[0069] The second air inlet 411 and the second air outlet 412 are located in a first sector area with the axis of the shaft 431 as the center and the length of the partition plate 432 as the radius; the dust outlet 413 is located in a second sector area with the shaft 431 as the center and the length of the partition plate 432 as the radius; the first sector area and the second sector area satisfy the following relationship:

[0070] ,

[0071] wherein, α represents the central angle of the first sector area, n represents the number of partition plates, β represents the central angle of the second sector area, gamma represents the central angle of the interval area between the first sector area and the second sector area;

[0072] The height of the partition plate 432 is equal to the height of the inner cavity of the shell 41, and the distance from the cross-sectional profile of the shell 41 in the first sector area and the interval area to the axis is equal to the length of the partition plate 432.

[0073] It should be understood that the above-mentioned term "the height of the partition plate 432" refers to the dimension of the partition plate 432 along the length direction of the shaft 431, the term "the length of the partition plate 432" refers to the distance from the end of the partition plate 432 away from the shaft 431 to the axis of the shaft 431, and the "interval area" refers to the sector area between the first sector area and the second sector area, and there are two interval areas, which are located on both sides of the first sector area and the central angles of the two interval areas can be unequal.

[0074] Accordingly, after the number of the partitions 432 is determined, the present embodiment selects the appropriate central angle of the first sector, the second sector and the interval region (i.e. determines the size of the second air inlet 411, the second air outlet 412 and the dust outlet 413, and the central angle of the interval between the dust outlet 413 and the second air inlet 411) according to the above relationship; accordingly, in the first sector and the interval region (i.e. other than the second sector), the upper and lower end surfaces of the partition 432 abut the upper and lower inner walls of the shell 41 and form airtight seals, and the end of the partition 432 away from the shaft 431 abuts the inner circumferential wall of the shell 41 and forms an airtight seal, so that when two adjacent partitions 432 are located in the first sector, only the airflow is 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 frame, 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 and be discharged through the dust outlet 413, that is, the shock-absorbing and noise-reducing device for industrial fans provided by the present embodiment can avoid exhaust gas leakage during the process of filtering and discharging dust and light floating impurities in the exhaust gas to be sucked.

[0075] It should be understood that, in the present embodiment, the industrial fan 2 continuously sucks, and the arrangement of the second air inlet 411 and the second air outlet 412 should ensure that the airflow entering the shell 41 through the second air inlet 411 can always be discharged through the second air outlet 412, and there is no case where the second air outlet 412 is continuously sucked while the second air inlet 411 is not connected.

[0076] More preferably, as shown in Figure 4 the filter block 421 is an elastic filter material; the dust filter further comprises a support plate 44 corresponding to each filter block 421;

[0077] For the filter block 421 between any two adjacent partitions 432, one end of the filter block 421 close to the shaft 431 is fixedly connected to the two adjacent partitions 432, and the other end away from the shaft 431 is fixedly connected to the corresponding support plate 44, the support plate 44 is slidingly connected to the shaft 431 (since the partition 432 and the shaft 431 are fixedly connected, the sliding connection between the support plate 44 and the shaft 431 is equivalent to the sliding connection between the support plate 44 and one of the two adjacent partitions 432), and a compression spring 45 is arranged between the support plate 44 and the shaft 431 in the direction of relative sliding, so that the support plate 44 abuts against the inner circumferential wall of the shell 41;

[0078] From one interval region to another, the distance from the cross-sectional profile of the second sector to the axis of the shell 41 gradually increases and then gradually decreases, so that during the rotation of the filter block 421 from one interval region to another, the filter block 421 is gradually elongated in the length direction of the compression spring 45 and then restored.

[0079] It should be understood that the support plate 44 can be in sliding connection with the shaft 431, and the present embodiment does not limit this. For example, in the embodiment shown in Figure 4 , a support rod 433 extends radially from the shaft 431, and a sleeve 441 extends from the support plate 44, and the sleeve 441 is sleeved on the support rod 433 to achieve sliding connection between the support plate 44 and the shaft 431.

[0080] Preferably, the filter block 421 is a porous elastic filter material, such as porous polyurethane, porous thermoplastic elastomer, and porous silica gel.

[0081] Accordingly, the shock-absorbing and noise-reducing device for an industrial fan provided in the present embodiment can make any filter block 421 gradually expand outward after entering the second fan-shaped area, and then gradually contract inward under the constraint of the gradually inwardly-contracting inner circumferential wall of the shell 41, so that the corresponding support plate 44 is gradually compressed and slides toward the shaft 431, and in this process, the elastic filter block 421 is gradually stretched and then gradually retracted and restored. The deformation generated in this process changes the pore structure of the filter block 421, and then the dust and impurities in the pore structure of the filter block 421 are more easily dropped and discharged (for other filter materials such as non-woven fabric filter materials, the deformation is usually achieved based on the folding and unfolding of the corrugated structure, and accordingly, the deformation promotes the impurities accumulated on the lower surface of the filter block 421 to drop by changing the topography of the lower surface of the filter block 421).

[0082] More preferably, a third air inlet 416 is also formed in the upper end surface of the shell 41, and the third air inlet 416 is located in the second fan-shaped area.

[0083] The third air inlet 416 is connected with a back-blowing pipe 417, and a dust removal fan 418 that blows air toward the third air inlet 416 is installed in the back-blowing pipe 417.

[0084] Similarly, for the arrangement of the third air inlet 416, it should be ensured that the gas entering the shell 41 through the third air inlet 416 can always be discharged through the dust discharge port 413.

[0085] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment can promote the dust impurities and light floating impurities accumulated on the lower surface of the filter block 421 to separate from the lower surface of the filter block 421 and / or promote the dust 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 the conventional back-flushing and dust-removing operation of the filter block 421 usually needs high-speed airflow back-flushing to achieve dust removal (i.e. needs high-speed airflow to forcibly blow away the impurities), but in the embodiment, the change in the internal pore shape of the porous structure of the elastic filter block 421 during the elongation and recovery of the filter block 421 can promote the dust impurities entering the pores to loosen and fall off, and in combination with the blowing effect of the dust-removing fan 418, the dust-removing fan 418 with smaller power can achieve better back-flushing and dust-removing effect, i.e. without the need for high-speed airflow back-flushing, and accordingly, the back-flushing and dust-removing operation by the dust-removing fan 418 will not introduce larger noise.

[0086] Embodiment 4:

[0087] As shown in Figure 1 to 3 the embodiment is based on Embodiment 1, the difference is that in the embodiment:

[0088] The shock-absorbing and noise-reducing device further comprises a soundproof box 5.

[0089] The industrial fan 2, the inertial separation box 1 and the dust filter are all installed in the soundproof box 5; the wallboard of the soundproof box 5 is a composite soundproof board.

[0090] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided in the embodiment can promote the dust impurities and light floating impurities accumulated on the lower surface of the filter block 421 to separate from the lower surface of the filter block 421 and / or promote the dust 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 the conventional back-flushing and dust-removing operation of the filter block 421 usually needs high-speed airflow back-flushing to achieve dust removal (i.e. needs high-speed airflow to forcibly blow away the impurities), but in the embodiment, the change in the internal pore shape of the porous structure of the elastic filter block 421 during the elongation and recovery of the filter block 421 can promote the dust impurities entering the pores to loosen and fall off, and in combination with the blowing effect of the dust-removing fan 418, the dust-removing fan 418 with smaller power can achieve better back-flushing and dust-removing effect, i.e. without the need for high-speed airflow back-flushing, and accordingly, the back-flushing and dust-removing operation by the dust-removing fan 418 will not introduce larger noise. Figure 1 In order to show the structure inside the soundproof box 5, part of the wallboard of the soundproof box 5 is cut away.

[0091] Specifically, the composite soundproof board comprises three layers of stainless steel plate layers 51, and a filling layer 52 is arranged between any two adjacent stainless steel plate layers 51, and the filling layer 52 is selected from one or more of nano rubber heat insulation soundproof board and polyester fiber sound absorption board.

[0092] Accordingly, the damping and noise reduction device for the industrial fan provided in the embodiment can effectively block the medium and high frequency noise generated during the operation of the industrial fan 2 by arranging the stainless steel plate layer 51; the filling layer 52 arranged between the adjacent stainless steel plate layers 51 can further weaken the penetration of sound waves, so that the overall sound insulation performance is better than that of a single sound insulation layer structure. In addition, the three-layer stainless steel plate layer 51 can also realize the structure reinforcement 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.

[0093] More preferably, the sound insulation box 5 is installed on the ground 6 through a plurality of buffer assemblies;

[0094] The buffer assembly comprises a spring 53 and an elastic cladding layer 54, and the two ends of the spring 53 are respectively connected to the ground 6 and the sound insulation box 5;

[0095] The elastic cladding layer 54 is cladded on the outside of the spring 53.

[0096] Preferably, the buffer assembly is a plurality of.

[0097] Accordingly, the damping and noise reduction device for the industrial fan provided in the embodiment can effectively absorb and attenuate the vibration of the industrial fan 2 and other structures transmitted to the sound insulation box 5, thereby delaying the fatigue and loosening of each component and improving the overall service life; by arranging the elastic cladding layer 54 to cladded the spring 53, the spring 53 can be protected, rust caused by the exposure of the spring 53 can be avoided, and high frequency noise caused by the vibration of the spring 53 itself can also be inhibited.

[0098] Embodiment 5:

[0099] As shown in Figure 6 to 9 the embodiment based on embodiment 1, the difference lies in that in the embodiment:

[0100] A slag discharge port 18 is arranged at the bottom of the slag collecting bin 15; the slag discharge assembly comprises a push cylinder 31, a first abutting plate 32 and a second abutting plate 33;

[0101] The first abutting plate 32 is located below the slag discharge port 18 and is fixedly connected with the inertia separation box 1;

[0102] The second abutting plate 33 is located on one side of the slag discharge port 18 and is fixedly connected with the inertia separation box 1, and the lower end surface of the second abutting plate 33 is flush with the slag discharge port 18;

[0103] A third abutting plate 34 is further fixedly connected to the push cylinder 31, and the upper end surface of the third abutting plate 34 is flush with the upper end surface of the push cylinder 31;

[0104] The push cylinder 31 is slidingly installed between the first abutting plate 32 and the slag discharge port 18, so that the upper end surface of the push cylinder 31 is flush with the slag discharge port 18, and the lower end surface of the push cylinder 31 is flush with the upper end surface of the first abutting plate 32;

[0105] By sliding the push cylinder 31, the push cylinder 31 can be switched between the slag receiving position, the slag pushing position and the slag discharging position; in the slag receiving position (as shown in FIG. 2A), the upper end of the push cylinder 31 is communicated with the slag discharge port 18 and the lower end is blocked by the first abutting plate 32; Figure 7 in the slag pushing position (as shown in FIG. 2B), the lower end of the push cylinder 31 is blocked by the first abutting plate 32, the upper end is blocked by the second abutting plate 33, and the slag discharge port 18 is blocked by the third abutting plate 34; Figure 8 in the slag discharging position (as shown in FIG. 2C), the slag discharge port 18 is blocked by the third abutting plate 34, and the lower end of the push cylinder 31 is open. Figure 9

[0106] It should be understood that the sliding direction of the push cylinder 31 relative to the first abutting plate 32 is the width direction of the inertial separation tank 1. The sliding action of the push cylinder 31 is realized by a telescopic mechanism 37, such as a pneumatic cylinder, a hydraulic cylinder, a linear motor or the like, which can realize reciprocating linear motion. The present embodiment does not limit this.

[0107] Accordingly, the shock-absorbing and noise-reducing device for the industrial fan provided by the present embodiment can make the push cylinder 31 located below the slag discharge port 18 and receive large particle impurities from the slag discharge port 18, then push the push cylinder 31 to the slag pushing position, so that the slag discharge port 18 is blocked and the inertial separation tank 1 is not leaked (i.e. under the suction of the industrial fan 2, the gas source of the first gas outlet 12 is only the first gas inlet 11 and no gas is sucked from the slag discharge port 18), then push the push cylinder 31 to the slag discharging position to discharge the large particle impurities falling into the push cylinder 31, and return to the slag receiving position to receive large particle impurities from the slag discharge port 18 again after the slag is discharged. During the whole process, the inertial separation tank 1 is not leaked, which ensures the effective suction of the industrial fan 2 to the suction exhaust gas.

[0108] Preferably, a slag discharge pipe 35 is further fixedly arranged below the slag discharging position, and the large particle impurities falling from the push cylinder 31 are discharged through the slag discharge pipe 35 when the push cylinder 31 is located at the slag discharging position. Preferably, a plurality of buffer plates 36 are further fixedly arranged in the slag discharge pipe 35, and each buffer plate 36 is arranged obliquely downward. Figure 7 to 9 More preferably, as shown in FIG. 2C, each buffer plate 36 is staggered on both sides of the slag discharge pipe 35, and 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.​

[0109] It should be understood that, in the case of installing the soundproof box 5, the slag discharge pipe 35 penetrates through the bottom of the soundproof box 5, thereby guiding the large-particle impurities out of the soundproof box 5, avoiding the need to open the soundproof box 5 to clean the large-particle impurities. By arranging the buffer plates 36 in the slag discharge pipe 35, on the one hand, the kinetic energy of the large-particle impurities falling can be buffered, thereby avoiding the impact noise caused by the large-particle impurities falling, and on the other hand, the staggered arrangement of the buffer plates 36 is also conducive to isolating the impact noise generated by the large-particle impurities in the inertia separation box 1 impacting the first baffle 13 and / or the second baffle 16, reducing the transmission thereof to the outside of the soundproof box 5.

[0110] It should be understood that, in the present application, unless otherwise specified, the term "rotary connection" means that only relative rotation can occur between the two, for example, the rotary arrangement of a hole and a shaft rod, which can be achieved by arranging a shaft shoulder on the shaft and a limiting groove in the hole to limit the relative movement in the axial direction; the terms "sliding connection" and "sliding installation" mean that only relative sliding can occur between the two, for example, dovetail grooves, T-shaped grooves and the like.

[0111] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A shock-absorbing and noise-reducing device for an industrial fan, characterized in that, The utility model relates to an industrial fan, including: Inertial separation tank (1), the first air inlet (11) is opened to one side of the inertial separation tank (1) length direction, the first air outlet (12) is opened to the other side, the first air inlet (11) is used for accessing the exhaust gas to be sucked, the first air outlet (12) is connected to the air inlet side of industrial fan (2); The first baffle (13) is fixedly installed in the inertial separation tank (1), the projection of the first air inlet (11) along the length direction is located in the first baffle (13), and there is a first channel (14) between the first baffle (13) and the inner side wall of the inertial separation tank (1); The slag collection bin (15) is arranged at the lower part of the inertial separation tank (1), and the slag discharge assembly is arranged at the bottom of the slag collection bin (15); The shock-absorbing and noise-reducing device further includes a dust filter; The dust filter includes a shell (41) and a filter core; The shell (41) is in the form of a pie, and the filter core is installed inside the shell (41); A second air inlet (411) is formed in the lower end surface of the shell (41), the second air inlet (411) is connected to the first air outlet (12), a second air outlet (412) is formed in the upper end surface of the shell (41), and the second air outlet (412) is connected to the air inlet side; The dust filter further includes a mounting bracket, the mounting bracket includes a shaft (431) and at least four partition plates (432) arranged in a circular array along the shaft (431), and the filter core includes filter blocks (421) corresponding to the partition plates (432) one by one; The mounting bracket is rotationally connected to the shell (41) through the shaft (431), and each partition plate (432) is located inside the shell (41); the filter blocks (421) are installed between any two adjacent partition plates (432); A dust discharge port (413) is further formed in the lower end surface of the shell (41); The second air inlet (411) and the second air outlet (412) are located in a first sector region with the axis of the shaft (431) as the center and the length of the partition plate (432) as the radius, and the dust discharge port (413) is located in a second sector region with the shaft (431) as the center and the length of the partition plate (432) as the radius; the first sector region and the second sector region satisfy the following relationship: ， wherein, α denotes the size of the central angle of the first sector region, n denotes the number of partitions, β denotes the size of the central angle of the second sector region, The height of the partition plate (432) is equal to the height of the inner cavity of the shell (41), and the distance from the cross-sectional profile of the shell (41) in the first sector region and the interval region to the axis is equal to the length of the partition plate (432); denotes the size of the central angle of the interval region between the first sector region and the second sector region; The filter blocks (421) are elastic filter materials, and the dust filter further includes support plates (44) corresponding to the filter blocks (421) one by one. ​ For any two adjacent partitions (432) between the filter block (421), the filter block (421) is fixedly connected with the two adjacent partitions (432) at one end close to the shaft (431), and is fixedly connected with the corresponding support plate (44) at the other end away from the shaft (431), the support plate (44) is in sliding connection with the shaft (431), and a compression spring (45) is arranged between the two in the direction of relative sliding, the compression spring (45) makes the support plate (44) abut against the inner circumferential wall of the shell (41); From one interval region to another interval region, the distance from the cross-sectional profile of the shell (41) in the second fan-shaped region to the axis first gradually increases and then gradually decreases, so that in the process of rotating the filter block (421) from one interval region to another interval region, the filter block (421) is gradually elongated along the length direction of the compression spring (45) and then restored.

2. The shock-absorbing and noise-reducing device according to claim 1, characterized in that: the first flow resistance plates (13) are a plurality of and each of the first flow resistance plates (13) is arranged in an array along the length direction; each of the first flow resistance plates (13) is fixedly connected with the top plate and the side plate of the inertial separation box (1), so that the first channel (14) is located at the bottom of the first flow resistance plate (13); a second flow resistance plate (16) is further arranged between two adjacent first flow resistance plates (13), the second flow resistance plate (16) is fixedly connected with the bottom plate and the side plate of the inertial separation box (1), so that a second channel (17) exists between the top of the second flow resistance plate (16) and the top plate of the inertial separation box (1).

3. The shock-absorbing and noise-reducing device according to claim 1, characterized in that: a gap exists between the lower end surface of the filter block (421) and the lower inner wall of the shell (41).

4. The shock-absorbing and noise-reducing device according to claim 1, characterized in that: a dust collecting 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 collecting hopper (414).

5. The shock-absorbing and noise-reducing device according to claim 1, characterized in that: a third air inlet (416) is further formed in the upper end surface of the shell (41), and the third air inlet (416) is located in the second fan-shaped region; a back blowing pipe (417) is connected to the third air inlet (416), and a dust removal fan (418) for blowing air toward the third air inlet (416) is installed in the back blowing pipe (417).

6. The shock-absorbing and noise-reducing device of claim 1, wherein further comprising a sound insulation box (5); the industrial fan (2), the inertial separation box (1) and the dust filter are all installed in the sound insulation box (5), and the wall plate of the sound insulation box (5) is a composite sound insulation plate.

7. The shock-absorbing and noise-reducing device according to claim 6, characterized in that: the composite sound insulation plate comprises three layers of stainless steel plate layers (51), and a filling layer (52) is arranged between any two adjacent stainless steel plate layers (51), and the filling layer (52) is selected from one or more of nano rubber thermal insulation sound insulation plates and polyester fiber sound absorption plates.

8. The shock-absorbing and noise-reducing device according to claim 6, characterized in that, the soundproof box (5) is installed on the ground (6) through a plurality of buffer assemblies; the buffer assembly comprises a spring (53) and an elastic cladding layer (54), two ends of the spring (53) are connected to the ground (6) and the soundproof box (5) respectively; the elastic cladding layer (54) is cladded on the outside of the spring (53).

9. The shock-absorbing and noise-reducing device according to claim 1, characterized in that, a slag discharge port (18) is arranged at the bottom of the slag collecting bin (15); the slag discharge assembly comprises a pushing cylinder (31), a first abutting plate (32) and a second abutting plate (33); the first abutting plate (32) is located below the slag discharge port (18) and is fixedly connected to the inertia separation box (1); the second abutting plate (33) is located on one side of the slag discharge port (18) and is fixedly connected to the inertia separation box (1), the lower end surface of the second abutting plate (33) is flush with the slag discharge port (18); a third abutting plate (34) is further fixedly connected to the pushing cylinder (31), the upper end surface of the third abutting plate (34) is flush with the upper end surface of the pushing cylinder (31); the pushing cylinder (31) is slidingly installed between the first abutting plate (32) and the slag discharge port (18), so that the upper end surface of the pushing cylinder (31) is flush with the slag discharge port (18), and the lower end surface of the pushing cylinder (31) is flush with the upper end surface of the first abutting plate (32); the pushing cylinder (31) can be switched between a slag receiving position, a slag pushing position and a slag discharging position by sliding the pushing cylinder (31); in the slag receiving position, the upper end of the pushing cylinder (31) is communicated with the slag discharge port (18) and the lower end is blocked by the first abutting plate (32); in the slag pushing position, the lower end of the pushing cylinder (31) is blocked by the first abutting plate (32), the upper end is blocked by the second abutting plate (33), and the slag discharge port (18) is blocked by the third abutting plate (34); in the slag discharging position, the slag discharge port (18) is blocked by the third abutting plate (34), and the lower end of the pushing cylinder (31) is open.

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