Low-noise environment-friendly wood dust recycling and dust removal device

Abstract

The application discloses a low-noise environment-friendly woodworking dust recycling and dust removal device, and belongs to the technical field of woodworking environment-friendly dust removal equipment. The device comprises a main cyclone, a filter cylinder dust removal box, a collecting barrel arranged at the bottom of the main cyclone, and filter cylinders in the filter cylinder dust removal box. A shunt bin is arranged at the exhaust port of the top end of the main cyclone. A plurality of groups of auxiliary cyclones are arranged between the main cyclone and the filter cylinder dust removal box, the main cyclone and the plurality of groups of auxiliary cyclones are connected in series, and the plurality of groups of auxiliary cyclones are connected in parallel. The device can perform three times of dust removal during use, gradually reduces the dust concentration of dust-containing air flow, reduces the filtering load of the filter cylinders, and simultaneously sends air to the lower part of each group of filter cylinders through the drainage pipe at the exhaust end of each group of auxiliary cyclones. The device converts one-side concentrated air intake into multi-point distributed uniform air supply, eliminates the face air speed deviation of the filter cylinder array, comprehensively improves the overall utilization rate of the filter material, and avoids the generation of aerodynamic turbulence and impact noise caused by the direct impact of high-speed air flow on the bin wall.

Description

Technical Field

[0001] This invention relates to a dust collection and recycling device, and more particularly to a low-noise and environmentally friendly woodworking dust collection and recycling device, belonging to the technical field of woodworking environmental dust collection equipment. Background Technology

[0002] In the process of wood product processing and production, in order to avoid dust pollution in the workshop environment and harm to the health of operators, the industry generally adopts a two-stage combined dust removal process that combines cyclone centrifugal pre-dust removal and cartridge fine filtration. The cyclone separator pre-separates most of the large wood chips, and then the cartridge filter completes the fine filtration of the exhaust gas. This takes into account both large air volume processing capacity and low emission requirements, and is the mainstream technical route for woodworking dust control.

[0003] However, in practical applications, the exhaust end of the cyclone dust collector unit in existing combined woodworking dust collection equipment is usually directly connected to the air inlet on one side of the filter cartridge dust collection chamber. This results in significant deviations in the face velocity of different areas of the filter cartridge array, affecting the utilization rate and service life of the filter material. Furthermore, the unilateral airflow also generates strong aerodynamic noise. In addition, existing filter cartridges generally adopt a fixed installation structure, and the dust removal method relies on high-pressure pulse jet to achieve intermittent dust removal. This cannot achieve continuous dynamic self-cleaning of the filter surface during continuous dust collection operations. This not only increases the operating resistance of the equipment and reduces the overall dust collection and filtration efficiency, but also forms a dense filter cake on the surface of the filter cartridge after long-term adhesion and accumulation, which is difficult to completely remove with conventional pulse airflow.

[0004] To address this issue, a low-noise, environmentally friendly woodworking dust recycling and dust removal device was designed. Summary of the Invention

[0005] The main objective of this invention is to provide a low-noise and environmentally friendly dust collection and recycling device for woodworking dust, in order to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved by adopting the following technical solution: A low-noise and environmentally friendly woodworking dust recycling and dust removal device includes a main cyclone, a cartridge dust collector, a collection bucket located at the bottom of the main cyclone, and a filter cartridge inside the cartridge dust collector. A diversion chamber is provided at the exhaust port at the top of the main cyclone. Several auxiliary cyclones are evenly arranged in parallel along the circumference on the outside of the diversion chamber. The air outlet side of the diversion chamber is connected to the air inlet of each group of auxiliary cyclones. Inside the cartridge dust collector is a mounting plate, on which several sets of filter cartridges, corresponding one-to-one with the number of auxiliary cyclones, are rotatably mounted. The exhaust end of the top of each set of auxiliary cyclones is connected to a drain pipe, and the exhaust end of the drain pipe extends to the bottom of each set of filter cartridges. A cover plate is fitted to the outside of the filter cartridge, and a rubber scraper is fixed to the inside of the cover plate. The end of the rubber scraper contacts the outer surface of the filter cartridge, and the cover plate and the outer wall of the filter cartridge form a relatively sealed independent cleaning chamber. A conical baffle is fixed in the lower part of the cartridge dust collector box. A dust storage chamber is formed between the conical baffle and the bottom of the cartridge dust collector box. A conduit connected to the dust storage chamber is provided at the bottom of the cover plate. The diversion chamber is equipped with a rotating mechanism. The power input end of the rotating mechanism is located directly opposite the top exhaust port of the main cyclone. The power output end of the rotating mechanism is connected to each group of filter cartridges to drive the filter cartridges to rotate at a constant speed around their own axis.

[0007] Preferably, the rotating mechanism includes a drive shaft, a planetary reducer, a main gear, a driven gear ring, and an impeller; The drive shaft is vertically rotated and installed at the center of the diversion chamber. The impeller is fixed to the bottom of the drive shaft and faces the top exhaust port of the main cyclone. The top of the drive shaft extends upward into the filter cartridge dust collector and is connected to the input end of the planetary reducer. The output end of the planetary reducer is fixedly equipped with a main gear, and the top of each filter cartridge is fixed with a driven gear ring. The main gear meshes with all the driven gear rings at the same time.

[0008] The residual pressure of the exhaust gas from the main cyclone blower drives all filter cartridges to rotate synchronously at low speed, eliminating the need for an additional electric drive device. This fully recovers the kinetic energy of the airflow within the system, resulting in energy savings and smooth, reliable gear transmission, with each group of filter cartridges rotating at a uniform speed.

[0009] Preferably, the planetary reducer is provided with a protective shell on its outer side, and a dustproof plate is provided on the top of the protective shell. The main gear and the driven gear ring are located in the sealed cavity formed by the dustproof plate and the mounting plate, and the drive shaft rotates through the dustproof plate.

[0010] By enclosing the transmission gears and reduction mechanism in an independent chamber, wood dust and wood fibers are prevented from invading the transmission meshing surface, thus avoiding component wear and jamming caused by dust and effectively extending the service life of the transmission system.

[0011] Preferably, the cover plate is an arc-shaped plate structure arranged coaxially with the filter cartridge, and the rubber scraper is arranged along the axial length of the filter cartridge, with the outer side of the rubber scraper extending into the filter pleat gap of the filter cartridge. The top of the duct is connected to the bottom opening of the independent dust removal chamber, and the bottom of the duct extends into the dust storage chamber of the conical partition.

[0012] The long rubber scraper gently scrapes the peaks of the filter pleats without forcefully scraping the filter material. When the filter cartridge rotates, it slightly shakes the filter pleats, loosening and removing surface dust. Combined with the independent dust removal chamber, it can block the negative pressure of filtration, preventing the peeled dust from being re-adsorbed, and achieving directional collection of the cleaned dust.

[0013] Preferably, the auxiliary cyclones are arranged in a ring array with the axis of the main cyclone as the center, and each group of guide pipes is evenly arranged along the radial direction of the filter cartridge dust collector to keep the air inlet velocity of each group of filter cartridges consistent.

[0014] The diversion pipe can achieve uniform airflow distribution in each set of auxiliary cyclones and uniform air intake in each filter cartridge, eliminating the face velocity deviation caused by unilateral air intake, while avoiding aerodynamic turbulence and impact noise generated by high-speed airflow directly hitting the chamber wall, thus balancing filtration uniformity and low-noise operation.

[0015] Preferably, the top of the filter cartridge dust collector is equipped with a pulse mechanism, which includes an air tank and several sets of pulse tubes. The nozzles of each set of pulse tubes correspond to the top openings of each set of filter cartridges, and are used to perform pulse backflushing to clean the filter cartridges.

[0016] The pulse mechanism complements the continuous scraper cleaning function, regularly cleaning the fine wood powder accumulated deep in the filter media, maintaining stable operating resistance, and ensuring long-term high-efficiency filtration accuracy.

[0017] Preferably, a temporary storage bin is provided at the bottom of the secondary cyclone, and the bottom of the temporary storage bin is connected to the collection bin through the first row of powder pipes; The bottom of the conical baffle and the bottom of the dust storage chamber are connected to the collection bucket through the second row of powder pipes. Both the first row of powder pipes and the second row of powder pipes are equipped with switch valves.

[0018] The collection bucket enables centralized and unified collection of dust from multiple dust removal units, reducing the need for multi-point unloading operations. The switch valves maintain stable internal air pressure in each dust removal unit during normal operation, preventing air leakage and reducing dust separation efficiency.

[0019] Preferably, a guide vane is provided on the inner side of the exhaust port of the main cyclone; The top of the diversion compartment is equipped with a conical block; The collection bucket can be detachably installed at the bottom of the main cyclone.

[0020] The baffle plate can regulate and guide the upward airflow, concentrate the airflow to impact the impeller, and increase the power input of the rotating mechanism. The conical block can ensure uniform circumferential air distribution in the diversion chamber and avoid flow deviation. The detachable collection bucket facilitates the cleaning, recycling and reuse of dust.

[0021] Preferably, the mounting plate is embedded with bearing seats that correspond one-to-one with the filter cartridges. The top of the filter cartridge is rotatably connected to the mounting plate through the bearing seats, and the interior of the filter cartridge is connected to the clean air chamber above the mounting plate.

[0022] The bearing housing provides stable rotational support for the filter cartridge, ensuring smooth rotation of the filter cartridge. At the same time, it effectively separates the filtration chamber and the clean air chamber, preventing dust-laden airflow from short-circuiting into the clean air side and ensuring the overall filtration effect of the equipment.

[0023] Preferably, a negative pressure fan is installed on the top of the cartridge dust collector, and the air inlet of the negative pressure fan is connected to the clean air chamber on the top of the cartridge dust collector.

[0024] Negative pressure fans can provide stable negative pressure power for the entire dust removal system, ensuring stable air volume processing and providing a reliable power foundation for airflow and dust separation in each dust removal unit.

[0025] The beneficial effects of this invention are as follows: This invention provides a low-noise and environmentally friendly woodworking dust recycling and dust removal device. Multiple sets of auxiliary cyclones are installed between the main cyclone and the filter cartridge dust collector. The main cyclone and the multiple sets of auxiliary cyclones are connected in series, while the multiple sets of auxiliary cyclones are connected in parallel. This allows for three-stage dust removal during use, progressively reducing the dust concentration in the dust-laden airflow and lowering the filtration load on the filter cartridges. Simultaneously, the exhaust ends of each set of auxiliary cyclones are directed to the bottom of a set of filter cartridges via guide pipes, transforming single-sided concentrated air intake into multi-point distributed uniform air delivery. This eliminates the face velocity deviation of the filter cartridge array, comprehensively improving the overall utilization rate of the filter material, and avoiding the aerodynamic turbulence and impact noise generated by high-speed airflow directly impacting the chamber walls. By rotating the filter cartridge onto the mounting plate and controlling its rotation during filtration via a rotating mechanism, along with a cover plate attached to the surface of the filter cartridge and a rubber scraper on the inner side of the cover plate that contacts the filter cartridge, a relatively sealed independent space can be formed in the dust cleaning area during filtration using the cover plate, blocking the influence of negative pressure during filtration. The rubber scraper then slightly limits the filter pleats, and the rotation of the filter cartridge causes the filter pleats to shake slightly, continuously loosening and shaking off the dust on the surface of the filter cartridge for dynamic cleaning. The dust is then stored in the dust collection chamber at the bottom of the conical partition through a conduit, reducing the operating resistance of the equipment and preventing dust caking, thus ensuring the recycling filtration effect. The drive shaft extends into the diversion chamber via a rotating mechanism consisting of a drive shaft, planetary reducer, main gear, driven gear ring, impeller, dustproof plate, and protective shell. The impeller at the bottom of the drive shaft faces the exhaust port of the main cyclone. The exhaust air from the main cyclone can be used as power to drive the filter cartridge to rotate slowly without the need for additional electricity, making it more energy-efficient and practical. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a schematic cross-sectional view of the entire invention; Figure 3 This is a cross-sectional view of the connection between the main cyclone and the auxiliary cyclone of the present invention; Figure 4 This is a schematic diagram of the internal orthogonal section of the filter cartridge dust collector of the present invention; Figure 5This is a side view of the internal structure of the filter cartridge dust collector of the present invention; Figure 6 This is a top view of the interior of the diversion chamber of the present invention; Figure 7 This is a top view of a partial internal structure of the filter cartridge dust collector of the present invention; Figure 8 This is a schematic diagram of the outer structure of the filter cartridge of the present invention; Figure 9 This is a schematic diagram of the inner side of the cover plate of the present invention.

[0027] In the diagram: 1. Main cyclone separator; 101. Collection tank; 102. Guide vane; 2. Secondary cyclone separator; 201. Temporary storage tank; 202. First row of powder pipes; 3. Diversion compartment; 301. Conical block; 4. Cartridge dust collector; 5. Conical baffle; 6. Drainage pipe; 7. Negative pressure fan; 8. Pulse mechanism; 801. Gas storage tank; 802. Pulse tube; 9. Mounting plate; 10. Filter cartridge; 11. Cover plate; 12. Rubber scraper; 13. Guide tube; 14. Rotating mechanism; 1401. Drive shaft; 1402. Planetary reducer; 1403. Main gear; 1404. Driven gear ring; 1405. Impeller; 1406. Dustproof plate; 1407. Protective casing; 15. Second row of powder tubes. Detailed Implementation

[0028] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0029] Example 1: As Figures 1-9 As shown, this embodiment provides a low-noise and environmentally friendly woodworking dust recycling and dust removal device, including a main cyclone 1, a filter cartridge dust collector 4, a collection bucket 101 set at the bottom of the main cyclone 1, and filter cartridges 10 inside the filter cartridge dust collector 4. A diversion chamber 3 is provided at the exhaust port at the top of the main cyclone 1. Several auxiliary cyclone 2 are evenly arranged in parallel along the circumference on the outside of the diversion chamber 3. The air outlet side of the diversion chamber 3 is connected to the air inlet of each group of auxiliary cyclone 2. Inside the filter cartridge dust collector 4, there is a mounting plate 9. Several sets of filter cartridges 10, corresponding one-to-one with the number of auxiliary cyclones 2, are rotatably mounted on the mounting plate 9. The exhaust end of the top of each set of auxiliary cyclones 2 is connected to a guide pipe 6, and the exhaust end of the guide pipe 6 extends to the bottom of each set of filter cartridges 10. A cover plate 11 is attached to the outer side of the filter cartridge 10, and a rubber scraper 12 is fixed to the inner side of the cover plate 11. The end of the rubber scraper 12 contacts the outer surface of the filter cartridge 10, and the cover plate 11 and the outer wall of the filter cartridge 10 enclose a relatively sealed independent dust removal chamber. A conical baffle 5 is fixed in the lower part of the cartridge dust collector 4. A dust storage chamber is formed between the conical baffle 5 and the bottom of the cartridge dust collector 4. A conduit 13 connected to the dust storage chamber is provided at the bottom of the cover plate 11. The diversion chamber 3 is equipped with a rotating mechanism 14. The power input end of the rotating mechanism 14 is positioned directly opposite the top exhaust port of the main cyclone 1. The power output end of the rotating mechanism 14 is connected to each group of filter cartridges 10 to drive the filter cartridges 10 to rotate at a constant speed around their own axis.

[0030] The negative pressure fan 7 provides negative pressure power for the entire dust removal system. Dust-laden gas generated from wood processing enters the main cyclone 1 under negative pressure. The airflow forms a downward swirling flow along the cylinder wall. Large dust particles such as wood chips and long fibers are thrown towards the inner wall of the main cyclone 1 under centrifugal force and slide down the cylinder wall into the collection bucket 101 at the bottom, completing the first-stage coarse particle centrifugal separation. The dust-laden airflow after preliminary purification flows upward along the central axis of the main cyclone 1 and enters the diversion chamber 3 from the top exhaust port. After being uniformly guided by the diversion chamber 3, it is sent circumferentially into each group of parallel auxiliary cyclones 2 for secondary centrifugal dust removal, further intercepting fine wood dust. The separated dust slides down the conical wall of the auxiliary cyclone 2 and falls to the bottom for temporary storage. After being purified by two stages of cyclone, the airflow flows out from the top exhaust end of each set of auxiliary cyclone ducts 2, is guided and transported by the corresponding guide pipes 6, and is sent from the bottom of the corresponding filter cartridge 10 into the filter chamber of the filter cartridge dust collector 4. The dust-laden airflow passes through the filter material of the filter cartridge 10 from the outside to the inside, and the fine dust is intercepted on the outer surface of the filter cartridge 10. After entering the interior of the filter cartridge 10, the clean air flows upward into the clean air chamber above the mounting plate 9, and is finally discharged by the negative pressure fan 7, completing the three-stage fine filtration.

[0031] While the filtration operation continues, the high-speed airflow discharged upward from the main cyclone 1 directly acts on the power input end of the rotating mechanism 14, driving the rotating mechanism 14 to operate and output rotational power, causing each group of filter cartridges 10 to rotate synchronously around its own axis at a uniform speed. During the rotation of the filter cartridges 10, the rubber scraper 12 lightly adheres to the outer surface of the filter cartridges 10, only causing slight shaking of the filter pleats, loosening and shaking off the dust on the filter surface and in the gaps between the filter pleats, without strong scraping action, and without causing significant wear to the filter cartridges 10; the independent dust cleaning chamber formed by the cover plate 11 isolates the external filtration negative pressure, and the peeled dust is not affected by airflow adsorption, and under the action of gravity, it falls downward through the duct 13 at the bottom of the cover plate 11 into the dust storage chamber below the conical partition 5 for temporary storage, realizing continuous online self-cleaning of the filter cartridges 10, effectively avoiding long-term dust accumulation and the formation of filter cake. The dust collected by each dust removal unit is finally collected into the collection bucket 101, realizing the centralized recycling and reuse of woodworking dust.

[0032] Example 2: The solution in Example 1 will be further described below with reference to its specific working method. See the description below for details: In this embodiment, the rotating mechanism 14 includes a drive shaft 1401, a planetary reducer 1402, a main gear 1403, a driven gear ring 1404, and an impeller 1405; The drive shaft 1401 is vertically rotatably installed at the center of the diversion chamber 3, and the impeller 1405 is fixed to the bottom end of the drive shaft 1401, with the impeller 1405 facing the top exhaust port of the main cyclone 1. The top end of the drive shaft 1401 extends upward into the filter cartridge dust collector 4 and is connected to the input end of the planetary reducer 1402. The output end of the planetary reducer 1402 is fixedly equipped with a main gear 1403. Each filter cartridge 10 has a driven gear ring 1404 fixed at its top end. The main gear 1403 meshes with all the driven gear rings 1404 at the same time.

[0033] The rising airflow discharged from the main cyclone 1 vertically impacts the impeller 1405 at the bottom, converting the airflow kinetic energy into mechanical energy, which drives the impeller 1405 and the drive shaft 1401 to rotate synchronously at high speed. The rotational power is reduced and amplified by the planetary reducer 1402 and then transmitted from the output end to the main gear 1403. The main gear 1403 drives all driven gear rings 1404 to rotate at low speed through gear meshing, thereby driving each set of filter cartridges 10 to rotate uniformly around their own axis at a set speed.

[0034] In this embodiment, the planetary reducer 1402 is covered by a protective shell 1407, and a dustproof plate 1406 is provided on the top of the protective shell 1407. The main gear 1403 and the driven gear ring 1404 are located in the sealed cavity formed by the dustproof plate 1406 and the mounting plate 9. The drive shaft 1401 rotates through the dustproof plate 1406.

[0035] The protective shell 1407, together with the dustproof plate 1406 and the mounting plate 9, forms a closed transmission cavity, which completely encloses the main gear 1403, the driven gear ring 1404 and the output end of the planetary reducer 1402 inside the cavity, preventing impurities such as wood powder and wood fiber in the filter cartridge dust collector 4 from invading the gear meshing surface and transmission components.

[0036] In this embodiment, the cover plate 11 is an arc-shaped plate structure arranged coaxially with the filter cartridge 10. The arc-shaped cover plate 11 maintains a uniform gap with the outer wall of the filter cartridge 10, forming a relatively sealed independent dust removal chamber in a local area on the outside of the filter cartridge 10, blocking the transmission of external filtration negative pressure to the dust removal area, and preventing the dust from being re-adsorbed. The rubber scraper 12 is arranged along the axial length of the filter cartridge 10, and the outer side of the rubber scraper 12 extends into the filter pleat gap of the filter cartridge 10, only slightly touching the peak of the filter pleat. When the filter cartridge 10 rotates at a constant speed, the rubber scraper 12 arranged along the axial length contacts the peak of the filter surface pleat, controlling the peak of the pleat to shake off the dust. The top end of the conduit 13 is connected to the bottom opening of the independent dust removal chamber, and the bottom end of the conduit 13 extends into the dust storage chamber of the conical partition 5. The scraped dust settles naturally in the independent dust removal chamber and is directionally introduced into the dust storage chamber through the bottom conduit 13, so as to realize the directional collection of dust and prevent the dust from being raised again in the filter chamber.

[0037] In this embodiment, the auxiliary cyclones 2 are arranged in a ring array with the axis of the main cyclone 1 as the center. The multiple sets of auxiliary cyclones 2 arranged in the ring array, together with the diversion effect of the central diversion chamber 3, can ensure that the air flow rate and air velocity entering each set of auxiliary cyclones 2 are completely consistent, so as to achieve load balance of the two-stage centrifugal dust removal. Each set of guide pipes 6 is evenly arranged along the radial direction of the filter cartridge dust collector 4, which transforms the single-sided concentrated air intake into multi-point distributed directional air supply. The airflow diffuses evenly upward from the bottom of the filter cartridge 10, so that the face velocity of each filter cartridge 10 is consistent.

[0038] In this embodiment, a pulse mechanism 8 is provided on the top of the filter cartridge dust collector 4. The pulse mechanism 8 includes an air storage tank 801 and several sets of pulse tubes 802. The nozzles of each set of pulse tubes 802 correspond to the top openings of each set of filter cartridges 10, and are used to perform pulse backflushing cleaning of the filter cartridges 10.

[0039] When the equipment has been running continuously for a period of time, and the deep dust accumulation in the filter cartridge 10 causes the operating resistance to rise to a set threshold, the pulse valve opens. Compressed air stored in the air tank 801 is injected instantaneously at high speed into the filter cartridge 10 through the pulse pipe 802, causing the filter cartridge 10 to expand radially and vibrate, shaking off the fine dust embedded deep in the filter material. The combination of pulse cleaning and continuous scraper cleaning can respectively achieve periodic deep cleaning of the filter material and real-time surface cleaning, ensuring that the filter cartridge 10 is in a low-resistance operating state for a long time.

[0040] In this embodiment, a temporary storage tank 201 is provided at the bottom of the auxiliary cyclone 2, and the bottom of the temporary storage tank 201 is connected to the collection tank 101 through the first powder pipe 202. The cone bottom of the cone-shaped baffle 5 and the bottom of the dust storage chamber are both connected to the collection bucket 101 through the second row of powder pipes 15. Switch valves are provided on both the first row of powder pipes 202 and the second row of powder pipes 15.

[0041] The fine dust separated by the secondary cyclone 2 is temporarily stored in the temporary storage bin 201 at the bottom, while the dust removed by the scraper is temporarily stored in the dust storage chamber below the conical baffle 5. During normal operation, the valves are kept closed to maintain stable air pressure inside each dust removal unit and prevent air leakage from affecting separation efficiency. During periodic ash discharge, the valves on the first dust pipe 202 and the second dust pipe 15 are opened. The dust in the temporary storage bin 201 and the dust storage chamber can be collected by gravity through the corresponding pipes into the collection bin 101 at the bottom of the main cyclone 1, realizing centralized collection of dust from multiple dust removal units and facilitating the unified recycling and reuse of wood dust.

[0042] In this embodiment, a guide plate 102 is provided inside the exhaust port of the main cyclone 1. The guide plate 102 can guide the exhaust dust-laden airflow to generate a spiral upward swirling flow, thereby increasing the driving force on the impeller 1405 in the rotating mechanism 14. The top of the diversion chamber 3 is provided with a conical block 301. The conical block 301 can evenly divert the central airflow rising from the main cyclone 1 and evenly diffuse the axial airflow to the circumference, ensuring that the airflow entering each set of auxiliary cyclones 2 is uniform and consistent, and avoiding the phenomenon of flow deviation. The collection bucket 101 can be detachably installed at the bottom of the main cyclone 1, improving the convenience of dust recovery operations.

[0043] In this embodiment, the mounting plate 9 is provided with bearing seats that correspond one-to-one with the filter cartridges 10. The top end of the filter cartridge 10 is rotatably connected to the mounting plate 9 through the bearing seats. The interior of the filter cartridge 10 is connected to the clean air chamber above the mounting plate 9.

[0044] The bearing housing provides stable rotational support for the filter cartridge 10, ensuring that the filter cartridge 10 can rotate smoothly around its own axis. At the same time, a sealing structure is set at the bearing housing to prevent dust-laden airflow from directly entering the clean air chamber without being filtered by the filter cartridge 10, thus ensuring filtration accuracy.

[0045] In this embodiment, a negative pressure fan 7 is provided on the top of the cartridge dust collector 4, and the air inlet of the negative pressure fan 7 is connected to the clean air chamber on the top of the cartridge dust collector 4.

[0046] When the negative pressure fan 7 is running, it creates negative pressure in the clean air chamber. Through air path conduction, it creates a negative pressure environment inside the entire dust removal system, providing a power source for the intake of dust-laden gas and the airflow in each dust removal unit.

[0047] The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. After the equipment is started, the negative pressure fan 7 starts to run, creating a negative pressure inside the system. The dust-laden gas generated by woodworking is drawn into the main cyclone 1, and large wood chips are separated and fall into the collection bucket 101 under the action of centrifugal force. The preliminarily purified airflow rises into the diversion chamber 3, and after being guided by the conical block 301, it is evenly distributed to each group of auxiliary cyclones 2 for secondary centrifugal separation. Fine dust falls into the temporary storage bucket 201 for temporary storage.

[0048] After two-stage dust removal, the airflow is evenly delivered to the bottom of each filter cartridge 10 through the guide pipe 6, and passes upward through the filter cartridge 10 to complete fine filtration. The clean air is discharged through the clean air chamber by the negative pressure fan 7. At the same time, the rising airflow discharged from the main cyclone 1 impacts the impeller 1405, driving the drive shaft 1401 to rotate. After being reduced by the planetary reducer 1402, it drives all the filter cartridges 10 to rotate at a uniform speed through the main gear 1403 and the driven gear ring 1404. During the rotation of the filter cartridges 10, the rubber scraper 12 continuously scrapes the crests of the filter surface. The peeled dust settles in the independent dust removal chamber of the cover plate 11 and falls into the dust storage chamber through the duct 13 for temporary storage, realizing continuous online self-cleaning.

[0049] When the operating resistance of the filter cartridge 10 reaches the set value, the pulse mechanism 8 is activated, and the filter cartridge 10 is subjected to reverse pulse jet blowing through the pulse tube 802 to clean the deep dust accumulation. The dust falls into the top of the conical baffle 5. The switch valves of the first row of powder pipes 202 and the second row of powder pipes 15 are opened periodically, and the dust in the temporary storage bucket 201, the dust storage chamber and the top of the conical baffle 5 are discharged into the collection bucket 101 to complete the centralized recycling of dust. The collection bucket 101 can be disassembled and taken out for dust resource utilization treatment.

[0050] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A low-noise and environmentally friendly woodworking dust recycling and dust removal device, comprising a main cyclone separator (1), a cartridge dust collector (4), a collection bucket (101) disposed at the bottom of the main cyclone separator (1), and a cartridge (10) inside the cartridge dust collector (4), characterized in that: A diversion chamber (3) is provided at the exhaust port at the top of the main cyclone (1). Several auxiliary cyclone tubes (2) are evenly arranged in parallel along the circumference on the outside of the diversion chamber (3). The air outlet side of the diversion chamber (3) is connected to the air inlet of each group of auxiliary cyclone tubes (2). The filter cartridge dust collector (4) has a mounting plate (9) fixed inside. Several sets of filter cartridges (10) are rotatably mounted on the mounting plate (9) in a number corresponding to the number of auxiliary cyclones (2). The exhaust end of the top of each set of auxiliary cyclones (2) is connected to a drain pipe (6). The exhaust end of the drain pipe (6) extends to the bottom of each set of filter cartridges (10). A cover plate (11) is attached to the outer side of the filter cartridge (10), and a rubber scraper (12) is fixed to the inner side of the cover plate (11). The end of the rubber scraper (12) is in contact with the outer surface of the filter cartridge (10). The cover plate (11) and the outer wall of the filter cartridge (10) form a relatively sealed independent dust removal chamber. A conical baffle (5) is fixed in the lower part of the cartridge dust collector (4). A dust storage chamber is formed between the conical baffle (5) and the bottom of the cartridge dust collector (4). A conduit (13) connected to the dust storage chamber is provided at the bottom of the cover plate (11). The diversion chamber (3) is equipped with a rotating mechanism (14). The power input end of the rotating mechanism (14) is set directly opposite the top exhaust port of the main cyclone (1). The power output end of the rotating mechanism (14) is connected to each group of filter cartridges (10) to drive the filter cartridges (10) to rotate at a constant speed around their own axis.

2. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The rotating mechanism (14) includes a drive shaft (1401), a planetary reducer (1402), a main gear (1403), a driven gear ring (1404), and an impeller (1405). The drive shaft (1401) is vertically rotated and installed at the center of the diversion chamber (3). The impeller (1405) is fixed to the bottom end of the drive shaft (1401), and the impeller (1405) is directly opposite the top exhaust port of the main cyclone (1). The top of the drive shaft (1401) extends upward into the filter cartridge dust collector (4) and is connected to the input end of the planetary reducer (1402). The output end of the planetary reducer (1402) is fixedly equipped with a main gear (1403). Each filter cartridge (10) has a driven gear ring (1404) fixed at its top. The main gear (1403) meshes with all the driven gear rings (1404) at the same time.

3. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 2, characterized in that: The outer side of the planetary reducer (1402) is provided with a protective shell (1407), and a dustproof plate (1406) is provided on the top of the protective shell (1407). The main gear (1403) and the driven gear ring (1404) are located in the sealed cavity formed by the dustproof plate (1406) and the mounting plate (9). The drive shaft (1401) rotates through the dustproof plate (1406).

4. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The cover plate (11) is an arc-shaped plate structure arranged coaxially with the filter cylinder (10). The rubber scraper (12) is arranged along the axial length of the filter cylinder (10), and the outer side of the rubber scraper (12) extends into the filter pleat gap of the filter cylinder (10). The top end of the conduit (13) is connected to the bottom opening of the independent dust removal chamber, and the bottom end of the conduit (13) extends into the dust storage chamber of the conical partition (5).

5. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The auxiliary cyclone (2) is arranged in a ring array with the axis of the main cyclone (1) as the center. Each group of diversion pipes (6) is evenly arranged along the radial direction of the filter cartridge dust collector (4) so ​​that the air inlet velocity of each group of filter cartridges (10) remains consistent.

6. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The top of the filter cartridge dust collector (4) is equipped with a pulse mechanism (8). The pulse mechanism (8) includes an air storage tank (801) and several sets of pulse tubes (802). The nozzles of each set of pulse tubes (802) correspond to the top openings of each set of filter cartridges (10) and are used to perform pulse back-blowing cleaning of the filter cartridges (10).

7. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The bottom of the secondary cyclone (2) is provided with a temporary storage tank (201), and the bottom of the temporary storage tank (201) is connected to the collection tank (101) through the first row of powder pipes (202). The cone bottom of the cone-shaped baffle (5) and the bottom of the dust storage chamber are connected to the collection bucket (101) through the second row of powder pipes (15). Both the first row of powder pipes (202) and the second row of powder pipes (15) are equipped with switch valves.

8. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: A guide plate (102) is provided on the inner side of the exhaust port of the main cyclone (1). The inner top of the diversion chamber (3) is provided with a conical block (301); The collection bucket (101) is detachably installed at the bottom of the main cyclone (1).

9. The low-noise and environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: The mounting plate (9) is fitted with bearing seats that correspond one-to-one with the filter cartridge (10). The top of the filter cartridge (10) is rotatably connected to the mounting plate (9) through the bearing seats. The interior of the filter cartridge (10) is connected to the clean air chamber above the mounting plate (9).

10. A low-noise, environmentally friendly woodworking dust recycling and dust removal device according to claim 1, characterized in that: A negative pressure fan (7) is installed on the top of the cartridge dust collector (4), and the air inlet of the negative pressure fan (7) is connected to the clean air chamber on the top of the cartridge dust collector (4).

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