Micron-sized dust collecting device

Abstract

The invention relates to the technical field of dust collection, and provides a micron-sized dust collection device which comprises a dust filter, the dust filter is provided with an air inlet pipeline, an air outlet pipeline and a dust collection outlet, and a collection box is provided with a dust inlet used for receiving the dust collection outlet and an airflow outlet located in the top. A filtering part is arranged between the dust collecting outlet and the dust inlet, the drainage pipeline is connected between the airflow outlet and the air inlet pipeline, a drainage fan is arranged on the drainage pipeline and used for draining air in the collecting box into the air inlet pipeline, and the settling assembly is arranged in the collecting box and used for settling micron-sized dust in the collecting box. And micron-sized dust is prevented from flowing to the air inlet pipeline. By means of the technical scheme, the technical problem that in the prior art, after a dust filtering device collects dust, secondary screening is needed for dust utilization is solved, and material loss is reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of dust collection, in particular, to a micron-sized dust collection device. BACKGROUND

[0002] In the field of industrial dust treatment, traditional dust filtration devices generally face the dual problems of "low collection efficiency and high utilization cost". With the improvement of environmental protection standards and the increasing demand for resource recycling, how to efficiently collect micron-sized dust and realize its direct reuse has become a technical bottleneck that the industry urgently needs to break through.

[0003] Early dust filtration devices mostly use single filtration mode, such as cloth bag dust removal or cyclone separation, which can only achieve extensive collection of dust. Such devices cannot effectively classify dust particle size, and the mixed dust collected contains both large particle size particles (such as coarse dust of tens of microns) and micron-sized fine dust. If micron-sized dust is to be utilized, a secondary screening device must be additionally configured for secondary processing, which not only increases the complexity of the process flow, but also causes the dust to be raised again during screening, resulting in secondary pollution and raw material loss. For example, in 3D printing powder production, the mixed dust collected by traditional devices must be screened in multiple stages to extract micron-sized raw materials that meet the particle size requirements, and the screening cost accounts for more than 30% of the total processing cost.

[0004] The airflow organization design of traditional devices is not reasonable, and it is difficult to achieve effective sedimentation of micron-sized dust. Single filter (such as ordinary filter cloth) has limited capture efficiency for micron-sized particles, and small dust can easily escape with the airflow, resulting in insufficient collection purity. At the same time, under the positive pressure conveying mode, the airflow stability is poor, the energy consumption is high, and dust backflow is easy to occur during shutdown, affecting the continuity of equipment operation. SUMMARY

[0005] To overcome the above-mentioned defects, the present application provides a micron-sized dust collection device, which solves the technical problem that the dust collected by the dust filtration device of the prior art needs secondary screening for dust utilization.

[0006] According to one aspect, at least one embodiment of the present application provides a micron-sized dust collection device for collecting micron-sized dust in dust-containing gas, comprising: a dust filter, the dust filter having an air inlet pipe, an air outlet pipe and a dust collection outlet; a collection tank, the collection tank having a dust inlet for receiving the dust collection outlet and an airflow outlet at the top, a filter being provided between the dust collection outlet and the dust inlet; A drainage pipe is connected between the air outlet and the air inlet pipe, and a drainage fan is arranged on the drainage pipe to drain the gas in the collection box into the air inlet pipe; A sedimentation assembly is arranged in the collection box to sediment micron-sized dust in the collection box to avoid micron-sized dust flowing into the air inlet pipe.

[0007] For example, the micron-sized dust collection device provided by at least one embodiment of the present disclosure further comprises a sedimentation tank arranged below the dust filter, and the dust collection outlet is arranged in the sedimentation tank. The sedimentation tank is rectangular, and a dust baffle is arranged in the sedimentation tank to extend downward and obliquely towards the middle axis of the dust filter. The dust baffle is arranged above the dust collection outlet. The filter element has a dust collection surface, which comprises an oblique section and a vertical section connected to the lower edge of the oblique section. The oblique section extends downward towards the side close to the dust baffle, and the vertical section and the side wall of the sedimentation tank form a large particle collection groove.

[0008] For example, the micron-sized dust collection device provided by at least one embodiment of the present disclosure comprises: An oblique baffle is arranged in the collection box and extends obliquely from the dust inlet to the air outlet. A vertical baffle is arranged on the side of the drainage pipe away from the dust filter. The oblique baffle and the vertical baffle form a first air passage gap therebetween, and the vertical baffle and the inner wall of the collection box form a dust storage space. An arc-shaped baffle extends arcuately above the side of the first air passage gap close to the filter element. The extending side of the arc-shaped baffle and the inner wall of the collection box form a second air passage gap therebetween. A plurality of parallel baffles are arranged parallel to the oblique baffle. The parallel baffles are arranged above the arc-shaped baffle and are connected to the vertical baffle and the inner wall of the collection box in a staggered manner. The side of the parallel baffles close to the air outlet extends obliquely upward. The vertical baffle and the arc-shaped baffle form a dust outlet therebetween, and the plurality of parallel baffles form a serpentine channel.

[0009] For example, the micron-sized dust collection device provided by at least one embodiment of the present disclosure comprises an air cavity in the arc-shaped baffle and the parallel baffles. The air cavity is connected to an air pump through an air pipe. When the air pump is started, the air cavity can change the internal pressure under the action of the air pump to make the arc-shaped baffle and the parallel baffles vibrate for dust removal.

[0010] For example, at least one embodiment of this disclosure provides a micron-level dust collection device, wherein the filter element includes: A housing, wherein the housing is disposed within the settling tank, and the housing has the dust collection surface; A filter support, wherein there are several filter supports arranged sequentially inside the housing; A filter screen, wherein the filter screen is disposed on the filter support and the filter screen is a micron-sized filter screen; A clamping element is oscillatingly mounted on the filter support. After oscillating, the clamping element is used to tighten or loosen the clamping of the filter screen.

[0011] For example, at least one embodiment of this disclosure provides a micron-level dust collection device, wherein the clamping member has a clamping arc surface, the filter bracket has an arc-shaped groove, and after the clamping member swings, the clamping arc surface presses the edge of the filter screen into the arc-shaped groove. The micron-level dust collection device further includes: A turbulence pipe is provided, which penetrates the side wall of the settling tank. The turbulence pipe has a turbulence air inlet located on one side of the vertical section, which is used to blow turbulent airflow into the vertical section.

[0012] For example, at least one embodiment of this disclosure provides a micron-level dust collection device, wherein the filter element further includes: A pressure relief component is provided through the clamping component. The pressure relief component has a through hole and a flexible extrusion part around the through hole. The flexible extrusion part can deform under pressure to open the through hole.

[0013] For example, at least one embodiment of this disclosure provides a micron-level dust collection device, wherein both the arc-shaped baffle and the parallel baffle have connecting holes, and a vibrating element is threaded into the connecting hole. The vibrating element has a diaphragm and a vibration chamber communicating with the air chamber. The diaphragm is hemispherical. After the pressure in the air chamber changes, the diaphragm can deform under the action of the pressure change in the air chamber to increase the vibration.

[0014] For example, at least one embodiment of this disclosure provides a micron-level dust collection device, wherein the dust filter is a bag filter, the dust filter is provided with a pulse backflushing element, and further includes: An isolator is disposed above the dust baffle and is used to separate the settling tank into a collection tank and a separation tank. A valve plate is disposed on the isolation member. The valve plate is used to control the connection or closure of the collection tank and the separation tank. When the pulse backflushing member is in working state, the valve plate is closed.

[0015] For example, at least one embodiment of this disclosure provides a micron-scale dust collection device, which further includes: A dust collector is slidably disposed at the bottom of the collection box and is used to scrape micron-sized dust to the collection port of the collection box.

[0016] The beneficial effects of the embodiments of the present invention are as follows: In this invention, the classification and sieving of dust particles of different sizes can be achieved. Micron-sized dust can be directly obtained in the collection box and can be directly used as raw material for production (such as 3D printing powder, coating filler, etc.). In contrast, mixed dust collected by traditional technology requires additional sieving and processing, which is more costly.

[0017] Larger dust particles are discharged through the discharge valve at the bottom of the collection box and can be used as building filler or recycled aggregate; micron-sized dust is directly reused as a high-value-added raw material, which improves the comprehensive utilization rate of dust compared with traditional technology and avoids pollution and solid loss caused by secondary grinding of large dust particles. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the filter bracket in the embodiment; Figure 3 for Figure 1 A cross-sectional view of the parallel baffle in the embodiment; Figure 4 for Figure 1 A three-dimensional structural diagram of the parallel baffle in the embodiment; Figure 5 for Figure 1 A schematic diagram of the filter structure in the embodiment; Figure 6 for Figure 1 A magnified structural diagram of A in the middle; Figure 7 for Figure 1 A magnified structural diagram of B in the diagram; Figure 8 for Figure 1 A magnified structural diagram of C.

[0020] In the diagram: Dust filter-1, inlet pipe-101, outlet pipe-102, dust collection outlet-103, settling tank-104, dust baffle-105, collection tank-106, separation tank-107, collection box-2, dust inlet-201, air outlet-202, collection port-203, filter element-3, dust collection surface-301, inclined section-302, vertical section-303, large particle collection tank-304, box body-305, filter support-306, filter screen-307, clamping element-308, clamping arc surface-309, arc groove-310, pressure relief element-3 11, Through hole - 312, Flexible extrusion section - 313, Drainage pipe - 4, Drainage fan - 5, Settling assembly - 6, Inclined baffle - 601, Vertical baffle - 602, First air passage gap - 603, Arc baffle - 604, Second air passage gap - 605, Parallel baffle - 606, Powder outlet - 607, Serpentine channel - 608, Air chamber - 609, Air pipe - 610, Air pump - 611, Connecting hole - 612, Baffle pipe - 7, Baffle air outlet - 701, Vibrating component - 8, Drum - 801, Vibrating chamber - 802, Isolating component - 9, Valve plate - 10, Powder collection component - 11. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0021] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-8 As shown, it illustrates a micron-level dust collection device in one embodiment of the present invention.

[0027] In some examples, a gas circulation path of "collection box 2 → air inlet pipe 101 → dust filter 1 → collection box 2" is formed by the diversion pipe 4 and the diversion fan 5. Compared with the prior art, the core is to perform secondary filtration on the filtered dust to collect particles with a micron-sized diameter. The settling component 6 causes the micron-sized dust to settle in the collection box 2 by gravity. Together with the filter element 3, it intercepts the escaped dust, forming a dual purification mechanism of settling pre-separation + filtration fine capture. Compared with a single filtration method, it achieves higher efficiency in collecting micron-sized dust. The gas that has passed through the dust collection in the dust filter 1 is discharged through the air outlet pipe 102, and the gas that has passed through the dust collection in the collection box 2 is discharged through the air outlet 202.

[0028] The filter element 3 between the dust collection outlet 103 and the dust inlet 201 adopts a modular design, and can be replaced with different precision filter materials (such as PTFE membrane filter cloth and electrostatic electret filter material) according to the characteristics of dust (such as particle size and viscosity), which is more adaptable than traditional fixed structure filters.

[0029] The settling component 6 can be designed as a multi-stage baffle, swirl blade, etc., which can change the direction and speed of airflow to make the dust settle due to inertia.

[0030] The induced draft fan 5 creates a negative pressure environment in the induced draft pipe 4, making the air pressure inside the collection box 2 lower than the inlet air pressure of the dust filter 1, allowing the gas to be discharged from the airflow outlet of the dust filter 1. Negative pressure induced draft consumes less energy than traditional positive pressure conveying, and the airflow stability is higher, ensuring consistent filtration efficiency.

[0031] This device can classify and screen dust of different particle sizes. Micron-sized dust can be directly obtained in collection box 2 and can be directly used as raw material for production (such as 3D printing powder, coating filler, etc.). In contrast, mixed dust collected by traditional technology requires additional screening and processing, which is more costly.

[0032] Larger dust particles are discharged through the bottom discharge valve of the collection box 2 and can be used as building filler or recycled aggregate; micron-sized dust is directly reused as a high-value-added raw material, which improves the comprehensive utilization rate of dust compared with traditional technology and avoids pollution and solid loss caused by secondary grinding of large dust particles. Micron-sized dust is generally ultrafine dust with a diameter of 0.1-50μm.

[0033] In some examples, the rectangular settling trough 104 of the dust filter 1 has an increased inner wall area compared to the traditional circular structure. Together with the dust baffle 105 (located above the dust collection outlet 103), it forms a deflection path, which reduces the velocity of the dust-containing airflow. The inertial force causes large dust particles to collide with the baffle and settle to the dust collection outlet 103, reducing the load on the subsequent filter element 3.

[0034] Traditional circular settling tanks have high airflow turbulence, making it easy for large dust particles to escape with the airflow. This design reduces the escape rate of large dust particles by combining rectangular tanks with baffles, reducing the processing load of filter element 3 and extending its service life to 1.5 times that of traditional systems.

[0035] The inclined section 302 of the dust collection surface 301 faces the dust baffle 105. The inclination angle guides the micron-sized dust in the airflow toward the baffle. The dust impacts the dust baffle 105 and slides into the large particle collection trough 304, which improves the collection efficiency. The vertical section 303 of the dust collection surface 301 and the side wall of the settling trough 104 form the large particle collection trough 304. The remaining large particles of dust are intercepted by inertial collision. The design of the inclined section 302 and the vertical section 303 allows micron-sized dust to enter the collection box 2 from the settling trough 104 under the negative pressure in the collection box 2.

[0036] The combination of dust baffle 105 and inclined section 302 forms an "L-shaped" airflow channel, which forces the dust-containing airflow to change direction, so that micron-sized dust particles are captured by inertial impact on the baffle or filter surface, thus achieving efficient classification and collection of micron-sized dust particles and larger dust particles.

[0037] The settling tank 104, dust baffle 105, and filter element 3 are integrated into the dust filter 1, which reduces the floor space required compared to traditional separate grading devices, making it particularly suitable for space-constrained industrial scenarios.

[0038] In some examples, the inclined baffle 601 and the vertical baffle 602 form a first air gap 603. When the dust-laden airflow collides with the inclined baffle 601, the dust settles directly into the dust-containing space due to inertia, resulting in higher collection efficiency. Compared to a traditional single baffle, the addition of the vertical baffle 602 increases the airflow deflection angle from 45° to 90°, increasing the probability of dust collision and reducing the dust escape rate.

[0039] The arc-shaped baffle 604 and the inclined baffle 601 are set at an obtuse angle. When the airflow passes through the second air gap 605, it generates a vortex, causing micron-sized particles to settle into the powder holding space due to centrifugal force, thus filling the blind spot of traditional single baffle for collecting dust of transitional particle size.

[0040] A series of parallel baffles 606 are staggered to form a serpentine channel 608. The airflow is forced to change direction multiple times as it passes through, and micron-sized dust particles settle due to inertial impact on the baffle surfaces, thus improving the collection efficiency compared to a straight path. The parallel baffles 606 are parallel to the inclined baffles 601, which can prolong the residence time of dust in the collection box 2. Combined with the guiding effect of the arc-shaped baffles 604, the Brownian motion diffusion distance of micron-sized dust particles is shortened, further improving the collection efficiency.

[0041] The vertical baffle 602 and the inner wall of the collection box 2 form an independent powder-containing space. The bottom inclination angle is 30°-45°, and the dust can automatically slide down to the powder outlet 607 by gravity, avoiding accumulation and blockage. Compared with the traditional bottom powder collection method that requires manual raking, the dust removal efficiency is improved.

[0042] The powder outlet 607 is located on the upper side of the baffle connection, using airflow to assist in dust discharge, avoiding dust retention under positive pressure environment and reducing maintenance frequency.

[0043] In some examples, the arc-shaped baffle 604 and the parallel baffle 606 have built-in air chambers 609, which are connected to the air pump 611 via air pipes 610. After the air pump 611 is started, the baffles vibrate at high frequency through changes in air pressure, shaking off the adhering dust. Compared with traditional manual knocking dust removal, efficiency is improved and no downtime is required; compared with the pulse dust removal solution that requires an additional compressed air system, this design has higher integration and lower energy consumption.

[0044] The vibration of the arc-shaped baffle 604 and the parallel baffle 606 is generated by activating the air pump 611 and inflating or deflating the air chamber 609 through the air pipe 610. (In inflation mode, the air pressure in the air chamber 609 gradually increases, forming a positive pressure that causes significant deformation of the metal chamber wall; in deflating mode, a negative pressure is formed in the air chamber 609, and the air pressure drops to 0.3-0.6 times the external atmospheric pressure, causing the chamber wall to deform under the pressure of the external air pressure.) During the above process, by adjusting the gas pressure in the air chamber 609, sufficient "pressure difference" is stored in the air chamber 609 to ensure that the chamber wall has the ability to quickly recover its shape.

[0045] Specifically, in inflation mode, when the pressure inside the air chamber 609 increases to a preset threshold, the valve of the air pump 611 releases pressure, instantly connecting the air chamber 609 to the outside world. The high-pressure gas inside the air chamber 609 is rapidly released to the outside, and the chamber wall quickly recovers from its "expansion deformation state" to its initial shape due to the sudden drop in internal pressure. In suction mode, when the pressure inside the air chamber 609 decreases to a preset threshold, the valve of the air pump 611 releases pressure, instantly connecting the air chamber 609 to the outside world. Outside air rapidly enters the air chamber 609, and the chamber wall quickly recovers from its "contraction deformation state" to its initial shape due to the sudden increase in external pressure. After the initial vibration, the metal chamber wall will generate reciprocating aftershocks due to the elastic recovery characteristics of the material. This causes the arc-shaped baffle 604 and the parallel baffle 606 to vibrate inside the collection box 2, which helps to clean the dust accumulated on the arc-shaped baffle 604 and the parallel baffle 606 without affecting the collection effect.

[0046] The vibration direction of the arc-shaped baffle 604 is set at an angle to the airflow direction, which can effectively break the adhesion between dust and the baffle surface, making the removal efficiency of sticky dust higher than that of traditional static baffles. The horizontal vibration of the parallel baffle 606 can eliminate the dead corners of dust accumulation in the serpentine channel 608, avoiding the increase in airflow resistance caused by dust accumulation.

[0047] The 611 air pump only starts on demand during dust removal, reducing energy consumption by more than 90% compared to pulse cleaning. Meanwhile, vibration cleaning eliminates the need to replace easily worn parts such as filter bags and pulse valves, lowering maintenance costs compared to traditional solutions and extending the equipment's mean time between failures (MTBF).

[0048] During the vibration cleaning process, the infrasound generated by the vibration of the baffle can cause micro-disturbance in the airflow inside the collection box 2, which promotes the accelerated settling of suspended micron-sized dust, forming a synergistic effect of "vibration cleaning + assisted settling".

[0049] The air pressure in the air chamber 609 is adjustable to adapt to different dust characteristics: for brittle dust, low-pressure vibration is used to prevent dust breakage and the generation of finer particles; for high-hardness dust, high-pressure strong vibration is used to ensure thorough dust removal. This flexible design avoids the equipment wear or changes in dust characteristics that may be caused by traditional rigid vibration, thus extending the equipment's service life.

[0050] In some examples, a micron-sized filter 307 (pore size ≤100μm) is used, achieving a dust collection efficiency of over 99.9% for ultrafine dust particles ranging from 0.1 to 50μm. The clamping element 308 uses a swing mechanism (such as a hinge connection) to clamp or loosen the filter 307: In the clamped state, the filter 307 is fixed to the filter bracket 306 by the clamping element 308, ensuring no shaking during filtration and an airflow leakage rate of <0.5%, avoiding dust bypass problems caused by installation gaps in traditional fixed structures; in the loosened state, the filter 307 can be quickly disassembled for cleaning or replacement, reducing maintenance time compared to traditional bolt-fixed methods and improving maintenance efficiency.

[0051] The pressure of the clamping element 308 is adjustable, adaptable to filter screens of different thicknesses, and compatible with various materials such as glass fiber and PTFE, offering greater flexibility than traditional fixed pressure structures.

[0052] Several filter supports 306 are arranged within the housing 305, increasing the effective filtration area compared to a single-support structure. The filter supports 306 employ a streamlined flow-guiding design (such as rounded corners) to reduce turbulence intensity during airflow, ensuring uniform dust deposition on the filter surface and preventing localized blockage. The housing 305, as an independent modular unit, allows for quick replacement or maintenance, and its flange-sealed connection to the settling tank 104 minimizes the risk of leakage.

[0053] In some examples, the pressing arc surface 309 of the clamping member 308 cooperates with the arc groove 310 of the filter bracket 306 to form a curved sealing structure. Compared with traditional flat pressing, the contact area is increased and the uniformity of sealing pressure is improved. The turbulent air port 701 of the turbulence pipe 7 blows turbulent airflow into the vertical section 303, using the airflow shear force to disturb the dust adhering to the vertical section 303 and the large particle collection tank 304. This allows micron-sized dust to enter the filter member 3, thereby improving the dust collection rate of micron-sized dust.

[0054] The air source for the baffle pipe 7 can come from the bypass airflow of the induced draft fan 5, without the need for an additional high-pressure air source. In the existing technology, the collected dust is often screened twice, and losses are unavoidable during the screening process. However, this solution achieves efficient collection and utilization of dust through the baffle pipe 7.

[0055] In some examples, the pressure relief component 311 achieves pressure control through the elastic deformation of the flexible compression part 313 (such as silicone or rubber): when the pressure difference across the filter element 3 exceeds a set threshold, the flexible compression part 313 is compressed, and the through hole 312 opens to relieve pressure; it automatically resets and closes after the pressure decreases. This avoids damage to the filter screen 307 caused by excessive pressure.

[0056] Under normal pressure, the flexible extrusion section 313 tightly adheres to the clamping component 308 through its own elasticity, forming a zero-leakage seal. During the depressurization process, the deformation hysteresis of the flexible material can buffer the airflow impact, avoiding the secondary dust re-entrainment caused by the "pulse-like" airflow jet during the depressurization of traditional metal hard seals.

[0057] Multiple pressure relief components 311 are evenly distributed on the clamping component 308, forming a "multi-point distributed pressure relief" network, which can quickly balance local pressure peaks within the housing 305. The multi-layer filter 307 ensures that the dust entering the collection box 2 is micron-sized dust.

[0058] In some examples, when the pressure in the air chamber 609 changes, the hemispherical diaphragm 801 of the vibrator 8 generates an amplitude that is many times greater than that of the traditional planar structure through spherical deformation, thereby increasing the vibration frequency of the arc-shaped baffle 604 and the parallel baffle 606 and enhancing the dust removal effect.

[0059] The pressure change inside the air cavity 609 causes the tympanic membrane 801 to undergo "expansion-contraction" reciprocating deformation, which forms a resonance effect with the natural vibration frequency of the arc-shaped baffle 604 and the parallel baffle 606, thereby improving the efficiency of vibration energy transfer and enhancing the cleaning effect compared to traditional vibration methods.

[0060] The vibrating element 8 is connected to the connecting hole 612 via threads, allowing for quick disassembly and replacement, which improves efficiency compared to traditional welded structures. At the same time, the threaded seal ensures the airtightness of the air chamber 609, avoiding pressure loss caused by porosity defects that may occur in traditional welding. The vibrating element 8 also has a vibration chamber 802 that communicates with the air chamber 609, and the diaphragm 801 vibrates under the pressure changes in the vibration chamber 802.

[0061] In some examples, the separator 9 divides the settling tank 104 into a collection tank 106 (including the dust collection outlet 103) and a separation tank 107 (including the dust baffle 105). When the pulse backflushing device is working, the valve plate 10 closes to block the connection between the two tanks, preventing the backflushing airflow from stirring up micron-sized powder. In traditional baghouse dust collectors, the airflow easily disturbs the settled dust during backflushing, causing the concentration of micron-sized powder to increase by 3-5 times instantaneously. This design, through dynamic isolation, keeps the air pressure in the collection tank 106 stable during backflushing, preventing a large amount of dust from falling instantly and clogging the filter element 3.

[0062] By integrating the settling tank 104, the separator 9, and the valve plate 10 into the bag filter, the floor space is reduced by 50% compared to the traditional "cyclone separator + bag" separate solution, making it especially suitable for retrofitting existing production lines with limited space.

[0063] Under high dust concentration conditions, the valve plate 10 can remain partially open, so that the separation tank 107 and the collection tank 106 form a micro-connection. The dust is temporarily stored by utilizing the expansion capacity of the settling tank 104, thus preventing the filter bag from becoming clogged due to excessive load.

[0064] In some examples, the dust collecting component 11 reciprocates at the bottom of the collection box 2 via a sliding mechanism, automatically scraping the settled micron-sized dust to the collection port 203, replacing the traditional manual dust removal method using a scraper, thus improving efficiency. The sliding frequency of the dust collecting component 11 can be adjusted according to the dust deposition rate to ensure that there are no dead corners for dust accumulation at the bottom of the collection box 2.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A micron-sized dust collection device for collecting micron-sized dust from dust-containing gases, characterized in that, include: Dust filter (1), the dust filter (1) having an air inlet pipe (101), an air outlet pipe (102) and a dust collection outlet (103); The collection box (2) has a dust inlet (201) for receiving the dust collection outlet (103) and an airflow outlet (202) located at the top, and a filter element (3) is provided between the dust collection outlet (103) and the dust inlet (201). A diversion pipe (4) is connected between the air outlet (202) and the air inlet pipe (101). A diversion fan (5) is provided on the diversion pipe (4). The diversion fan (5) is used to divert the gas in the collection box (2) to the air inlet pipe (101). Settling assembly (6) is provided in the collection box (2) to settle the micron-sized dust in the collection box (2) so as to prevent the micron-sized dust from flowing to the air inlet pipe (101).

2. A micron-sized dust collecting device according to claim 1, wherein It also includes a settling tank (104) disposed below the dust filter (1), the dust collection outlet (103) is located in the settling tank (104), the settling tank (104) is rectangular, a dust baffle (105) is disposed in the settling tank (104) extending obliquely downward toward the central axis of the dust filter (1), the dust baffle (105) is located above the dust collection outlet (103), the filter element (3) has a dust collection surface (301), the dust collection surface (301) has an inclined section (302) and a vertical section (303) connected to the lower edge of the inclined section (302), the inclined section (302) extends downward toward the side close to the dust baffle (105), and a large particle collection tank (304) is formed between the vertical section (303) and the side wall of the settling tank (104).

3. A micron size dust collection device according to claim 2, wherein, The settling assembly (6) includes: An inclined baffle (601) is disposed inside the collection box (2) and extends obliquely from the dust inlet (201) to the airflow outlet (202); A vertical baffle (602) is provided on the side of the drainage pipe (4) away from the dust filter (1). A first air gap (603) is formed between the inclined baffle (601) and the vertical baffle (602). The vertical baffle (602) and the inner wall of the collection box (2) form a powder-containing space. An arc-shaped baffle (604) extends arc-shaped above the first air gap (603) near the filter element (3), and a second air gap (605) is formed between the extended side of the arc-shaped baffle (604) and the inner wall of the collection box (2). Parallel baffles (606) are provided in parallel with the inclined baffles (601), are located above the arc-shaped baffles (604), and are alternately connected to the vertical baffles (602) and the inner wall of the collecting box (2). The side of the parallel baffles (606) close to the airflow outlet (202) extends upwardly and obliquely. The vertical baffles (602) and the arc-shaped baffles (604) form a powder outlet (607) therebetween. A plurality of the parallel baffles (606) form a serpentine channel (608).

4. A micron size dust collection device according to claim 3, wherein The arc-shaped baffles (604) and the parallel baffles (606) are provided with air cavities (609) connected to an air pump (611) through air pipes (610). When the air pump (611) is started, the air cavities (609) can change the internal pressure under the action of the air pump (611) to make the arc-shaped baffles (604) and the parallel baffles (606) vibrate for dust removal.

5. The micron-sized dust collecting device according to claim 2, wherein The filter (3) comprises: a box body (305) provided in the settling tank (104), the box body (305) being provided with the dust collecting surface (301); a plurality of filter supports (306) arranged in the box body (305) in sequence; a filter screen (307) provided on the filter supports (306), the filter screen (307) being a micron-level filter screen; a pressing member (308) swingably provided on the filter supports (306), the pressing member (308) being used to press or cancel the pressing of the filter screen (307) after swinging.

6. A micron size dust collection device according to claim 5, wherein The pressing member (308) is provided with a pressing arc surface (309), the filter supports (306) are provided with arc-shaped grooves (310), and the pressing arc surface (309) presses the edge of the filter screen (307) into the arc-shaped grooves (310) after the pressing member (308) swings. The micron-level dust collecting device further comprises:

7. A micron size dust collection device as defined in claim 5, wherein, a turbulence pipe (7) penetrating through the side wall of the settling tank (104), the turbulence pipe (7) being provided with a turbulence air port (701) on one side of the vertical section (303) for blowing a turbulence airflow to the vertical section (303). The filter (3) further comprises: a pressure relief member (311) penetratingly provided on the pressing member (308), the pressure relief member (311) being provided with a through hole (312), the through hole (312) being provided around the flexible extrusion portion (313), and the flexible extrusion portion (313) being capable of deforming under the action of pressure to open the through hole (312).

8. A micron size dust collection device as defined in claim 4, wherein, The arc-shaped baffle (604) and the parallel baffle (606) are provided with connecting holes (612), vibration members (8) are arranged in the connecting holes (612) in a threaded mode, the vibration members (8) are provided with eardrums (801) and vibration cavities (802) in communication with the air cavities (609), the eardrums (801) are hemispherical, and the eardrums (801) can be deformed to increase vibration amount under the action of pressure change of the air cavities (609).

9. A micron size dust collection device as defined in claim 4 wherein, The dust filter (1) is a bag dust collector, the dust filter (1) is provided with a pulse blowback member, and the dust filter (1) further comprises: An isolation member (9) is arranged above the dust baffle (105) and is used for separating the dust baffle (105) into a collection tank (106) and a separation tank (107); A valve plate (10) is arranged on the isolation member (9) and is used for controlling communication or closing of the collection tank (106) and the separation tank (107), and the valve plate (10) is closed when the pulse blowback member is in a working state.

10. The micron-sized dust collection device of claim 1, wherein, Further comprising: A powder collecting member (11) is slidingly arranged at the bottom of the collection tank (2), and the powder collecting member (11) is used for scraping micron-level dust to a collection port (203) of the collection tank (2).

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