Powder conveying dust collection and capturing device

Abstract

This invention discloses a dust collection device for powder conveying, belonging to the technical field of dust removal equipment for powder conveying. It includes a frame, a cyclone centrifuge, a dust collection hood assembly, a dust collection chamber, a large-capacity dust storage box, and a fan. The dust collection hood assembly includes a long-stroke electric telescopic tube and orthogonally adjustable guide plates, adaptable to dynamic dust sources and resistant to wind interference. The dust collection chamber is equipped with a magnetic snap-fit ​​filter unit and a periodic vibration dust removal unit. The filter plates can be quickly installed and removed without tools, and the vibration mechanism can efficiently clean coarse coal dust particles. The dust storage box is connected by strong magnetic attraction, equipped with rollers for easy transport, and the sealing gasket is weather-resistant and anti-aging. This device solves the problems of inconvenient adjustment, poor wind resistance and sealing, and inefficient maintenance of existing equipment. It has high collection efficiency, convenient maintenance, and is suitable for continuous operation needs at docks.

Description

Technical Field

[0001] This invention relates to the field of powder conveying and dust removal equipment, and in particular to a powder conveying and dust collection device. Background Technology

[0002] As a crucial hub for coal waterway transportation, coal terminals generate significant amounts of coal dust during operations such as grab loading / unloading, belt conveyor transfer, and stacking / reclaiming. The open working spaces at coal terminals are significantly affected by wind, allowing coal dust to easily spread and create widespread dust pollution. This not only severely damages the surrounding atmospheric environment and marine ecosystems but also harms the respiratory health of workers. Furthermore, high concentrations of coal dust accelerate the wear and corrosion of large terminal equipment (such as grabs and belt conveyors), reducing equipment lifespan and operational reliability. In addition, coal dust accumulation can pose safety hazards and impair visibility and operational precision during loading and unloading.

[0003] The existing dust collection devices used in coal terminals have the following specific defects: poor adaptability of the dust collection hoods. The operating trajectories of equipment such as grab cranes and stacker-reclaimers at coal terminals are highly variable, and the loading and unloading height and dust diffusion range are dynamically changing. Existing fixed or limited-adjustment dust collection hoods cannot accurately approach the dust source, resulting in low coal dust collection efficiency and a large amount of dust escaping with the wind. Low maintenance efficiency of the filter structure. The high loading and unloading intensity and high coal dust production at coal terminals make the filter plates easily clogged by a large amount of coarse coal dust. Moreover, the existing filter structure is cumbersome to disassemble and assemble, requiring long-term downtime for maintenance, which seriously affects the efficiency of continuous loading and unloading operations at the terminal. Insufficient targeting of vibration dust removal. Coal dust at coal terminals contains a large number of coarse particles with strong adhesion. The existing vibration mechanism has a single vibration frequency, which is difficult to thoroughly clean the dust on the surface of the filter plates. Furthermore, the filter modules are easily damaged due to violent vibration, increasing maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide a powder conveying dust collection device to achieve efficient dust collection, stable filtration, and rapid maintenance at coal terminal operations, thereby meeting environmental protection standards and continuous operation requirements.

[0005] To achieve the above objectives, the present invention provides a powder conveying and dust collection device, comprising a frame, on which a cyclone centrifuge is fixedly connected. The input end of the cyclone centrifuge is connected to a dust collection hood assembly via a first connecting pipe. The dust collection hood assembly includes a telescopic tube unit and a dust collection hood unit. One end of the telescopic tube unit is fixedly connected to the first connecting pipe, and the other end is fixedly connected to the dust collection hood unit. The output end of the cyclone centrifuge is connected to the air inlet of a dust collection chamber via a second connecting pipe. The dust collection chamber is equipped with a vibration dust removal unit and a filter unit. A dust collection box is detachably connected to the dust outlet on the lower surface of the dust collection chamber. The air outlet of the dust collection chamber is connected to a fan via a third connecting pipe.

[0006] Preferably, the telescopic tube unit is arranged vertically and includes an outer tube, an inner tube, and a first driving structure. The upper end of the inner tube passes through the lower opening of the outer tube and extends into the interior of the outer tube. A sealing ring (preferably made of rubber) is fixedly provided on the outer surface of the upper end of the inner tube. The sealing ring is tightly fitted and sealed with the inner wall of the outer tube, which can effectively prevent dust from leaking from the gap between the inner tube and the outer tube. The upper end of the outer tube is fixedly connected to the end of the first connecting pipe away from the cyclone centrifuge. The lower end of the inner tube is fixedly connected to the dust collection hood unit. The first driving structure includes electric telescopic rods symmetrically arranged on both sides of the outer tube. The fixed end of the electric telescopic rod is fixedly connected to the corresponding side surface of the outer tube, and the telescopic end of the electric telescopic rod is fixedly connected to the upper surface of the dust collection hood unit. The telescopic action of the electric telescopic rod drives the inner tube to move along the axial direction of the outer tube, thereby adjusting the height of the dust collection hood unit to adapt to powder conveying scenarios of different heights.

[0007] Preferably, the dust collection hood unit includes a dust collection hood, the lower surface of which has a dust collection chamber, and the lower end of the inner tube penetrates the upper surface of the dust collection hood and communicates with the inside of the dust collection chamber. The dust collection chamber is provided with several uniformly and parallelly arranged first guide plates and several uniformly and parallelly arranged second guide plates. The first guide plates are located below the second guide plates, and the first and second guide plates are arranged perpendicular to each other. The orthogonally arranged guide plates can rectify the intake dust-laden airflow, preventing airflow turbulence from affecting the dust collection effect. Both the first and second guide plates are angle-adjustable guide plates; the angle of the guide plates can be adjusted according to the diffusion direction of the powder dust to optimize the dust collection efficiency.

[0008] Preferably, the filtration unit includes several filtration structures, which are arranged vertically and parallelly inside the dust collection chamber near the air outlet. The parallel arrangement of multiple filtration structures can increase the filtration area and efficiency. Each filtration structure includes a filter plate with a filter module embedded in its center for trapping fine dust particles after initial separation by the cyclone centrifuge. A connecting plate is fixed to one end of the filter plate that penetrates the slotted side wall of the dust collection chamber. Connecting rods are symmetrically arranged above and below the filter plate, with one end of each connecting rod fixed to the inner side of the connecting plate. The other end is inserted into the connecting hole on the side wall of the dust collection chamber. The cooperation between the connecting rod and the connecting hole guides and limits the filter plate, ensuring accurate installation of the filter plate. The upper and lower surfaces of the filter plate are symmetrically provided with magnetic snap-fit ​​structures for quick fixing and disassembly of the filter plate and the dust collection chamber. A handle is fixed on the side of the connecting plate away from the filter plate for easy hand operation of the filter plate. A button is installed on the upper surface of the handle. The button is electrically connected to an electromagnet to control the on / off state of the electromagnet, thereby controlling the locking and unlocking of the magnetic snap-fit ​​structure.

[0009] Preferably, the magnetic locking structure includes symmetrically formed connecting grooves on the upper and lower surfaces of the filter plate. A fixing post is provided inside each connecting groove. An induction magnet is fixed to the bottom surface of the fixing post, and an electromagnet is fixed to the bottom surface of the connecting groove. A first spring is wrapped around the outer periphery of the electromagnet. The upper end of the first spring is fixed to the bottom surface of the fixing post, and the lower end is fixed to the bottom surface of the connecting groove. The upper and lower surfaces of the groove in the side wall of the dust collection chamber are symmetrically formed with fixing holes adapted to the fixing post. When the filter plate needs to be installed, it is inserted into the groove in the side wall of the dust collection chamber along the connecting rod guide. At this time, the first spring is in a naturally extended state. The upper end of the fixing post extends out of the connecting groove and inserts into the fixing hole under the elastic force of the first spring, achieving initial locking of the filter plate. Pressing the button energizes the electromagnet, causing it to engage with the induction magnet, which in turn drives the fixing post to compress the first spring and retract into the connecting groove, thus unlocking the filter plate for easy removal and disassembly.

[0010] Preferably, the vibration dust removal unit includes vibration dust removal components symmetrically arranged on the inner walls of both sides of the dust collection chamber, used to vibrate and clean the dust adhering to the surface of the filter plate to prevent the filter module from clogging; the vibration dust removal components include a telescopic rod, a fixed rod, and a second drive structure, the outer surface of the fixed rod is fixed to the inner wall of the dust collection chamber, and a limiting hole is formed through the surface of the fixed rod near the filter plate, the limiting hole being formed along the axial direction of the fixed rod; one end of the telescopic rod is inserted into the limiting hole, and limiting blocks are symmetrically provided on the outer surface of the telescopic rod, and limiting grooves adapted to the limiting blocks are symmetrically formed on the inner wall of the fixed rod along the axial direction, the limiting blocks and limiting grooves slidingly engaging to restrict the rotation of the telescopic rod, ensuring that the telescopic rod can only reciprocate along the axial direction; the telescopic... A compression spring is fixedly attached to one end of the rod inside the limiting hole, and the other end of the compression spring abuts against the bottom surface of the limiting hole, serving as a buffer and resetting function; the second driving structure includes a drive motor, which is fixedly attached to the outer surface of the dust collection chamber. The output shaft of the drive motor passes through the side wall of the dust collection chamber via a sealed bearing and is connected to a semi-circular gear. A rack is fixedly attached to the outer surface of the corresponding section of the telescopic rod outside the limiting hole, and the rack meshes with the semi-circular gear; the end of the telescopic rod away from the fixed rod passes through a limiting ring and is fixedly attached to a vibrating plate. The limiting ring is fixedly attached to the inner wall of the dust collection chamber and is used to guide and limit the reciprocating motion of the telescopic rod; a buffer rubber layer is provided on the side of the vibrating plate near the filter plate to prevent damage caused by hard contact between the vibrating plate and the filter plate.

[0011] The working principle of the vibration dust removal unit is as follows: After the drive motor starts, the output shaft drives the semi-circular gear to rotate. When the tooth surface of the semi-circular gear meshes with the rack, the drive telescopic rod moves inward along the limiting hole, the compression spring is compressed, and the vibrating plate moves away from the filter plate. When the toothless surface of the semi-circular gear rotates to be opposite to the rack, the meshing relationship is released, the telescopic rod is reset under the elastic force of the compression spring, and the vibrating plate moves towards the filter plate and impacts the surface of the filter plate. Through the continuous rotation of the semi-circular gear, the periodic impact vibration of the vibrating plate on the filter plate is achieved, causing the dust attached to the surface of the filter plate to fall off and fall into the dust collection box.

[0012] Preferably, the upper surface of the dust collection box is provided with magnetic suction columns evenly and vertically along the edge, and the dust outlet on the lower surface of the dust collection chamber is provided with magnetic suction holes adapted to the magnetic suction columns. The magnetic attraction between the magnetic suction columns and the magnetic suction holes enables quick disassembly and connection between the dust collection box and the dust collection chamber. A sealing gasket is fixed on the upper surface of the dust collection box, and the sealing gasket is tightly fitted and sealed with the dust outlet end face on the lower surface of the dust collection chamber, effectively preventing dust from leaking from the connection gap between the dust collection box and the dust collection chamber.

[0013] Therefore, the present invention employs the above-mentioned powder conveying and dust collection device, which has the following technical advantages: (1) The telescopic tube unit of the present invention drives the inner tube to rise and fall by electric telescopic rod, which can quickly adjust the height of the dust collection hood unit and adapt to the dynamic operation trajectory of dock equipment such as grab cranes and stacker-reclaimers.

[0014] (2) The first guide plate and the second guide plate inside the dust collection chamber of the present invention are arranged orthogonally and the angle is adjustable. They can rectify the dust-laden airflow interfered by wind in the open environment, optimize the guiding effect according to the wind direction and the dust diffusion trajectory of the operation, and further improve the collection efficiency of large-scale dust.

[0015] (3) The filter structure of the present invention adopts a magnetic snap-fit ​​structure and a connecting rod guide. The filter plate can be quickly disassembled and assembled by controlling the electromagnet to turn on and off by a button. No tools are needed. It is suitable for the rapid maintenance needs of continuous dock operation, reduces downtime, and improves loading and unloading efficiency.

[0016] (4) The vibration dust removal unit of the present invention achieves periodic vibration cleaning of the filter plate by the cooperation of the drive motor, semi-circular gear, rack and compression spring, which is suitable for the hard and easy-to-adhere characteristics of coal mine dust, effectively prevents the filter module from clogging, ensures the stability of the filtration effect, and the buffer rubber layer can prevent the filter plate from being damaged by impact, extend the service life and reduce maintenance costs.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of a powder conveying and dust collection device according to the present invention; Figure 2 This is a side view of a powder conveying and dust collection device according to the present invention; Figure 3 This is a schematic diagram of the dust collection hood structure in a powder conveying and dust collection device of the present invention; Figure 4 This is a schematic diagram of the third connecting pipe in a powder conveying and dust collection device of the present invention; Figure 5 This is a schematic diagram of the filter unit structure in a powder conveying and dust collection device of the present invention; Figure 6 This is a schematic diagram of the filter plate structure in a powder conveying and dust collection device of the present invention; Figure 7 This invention relates to a powder conveying and dust collection device. Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the internal structure of the dust collection chamber in a powder conveying and dust collection device of the present invention; Figure 9 This is a schematic diagram of the vibration dust removal unit structure in a powder conveying and dust collection device of the present invention; Figure 10 This is a schematic diagram of the dust storage box structure of a powder conveying and dust collection device according to the present invention; Figure 11 This is a schematic diagram of the magnetic suction hole structure on the lower surface of the dust collection chamber in a powder conveying and dust collection device of the present invention.

[0019] Figure Labels 1. Frame; 2. Cyclone centrifuge; 3. First connecting pipe; 4. Dust hood assembly; 41. Telescopic tube unit; 411. Outer pipe; 412. Inner pipe; 413. Electric telescopic rod; 42. Dust hood unit; 421. Dust hood; 422. Dust suction chamber; 423. First guide plate; 424. Second guide plate; 5. Second connecting pipe; 6. Dust suction chamber; 7. Vibration dust removal unit; 71. Telescopic rod; 72. Fixed rod; 73. Limiting hole; 74. Limiting block; 75. Limiting groove; 76. Compression spring; 77. Drive 78. Motor; 79. Semicircular gear; 710. Rack; 711. Limiting ring; 712. Vibrating plate; 713. Buffer rubber layer; 8. Filter unit; 84. Filter plate; 85. Filter module; 86. Connecting plate; 87. Connecting rod; 88. Handle; 89. Button; 80. Magnetic snap-fit ​​structure; 81. Connecting groove; 82. Fixing column; 83. Induction magnet; 84. Electromagnet; 85. First spring; 9. Dust collection box; 96. Magnetic column; 97. Magnetic hole; 10. Third connecting pipe; 11. Fan. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 4 As shown, a powder conveying and dust collection device includes a frame 1, which is welded from stainless steel. A cyclone centrifuge 2 is bolted to the frame 1. The input end of the cyclone centrifuge 2 is connected to a dust collection hood assembly 4 via a first connecting pipe 3. The dust collection hood assembly 4 includes a telescopic tube unit 41 and a dust collection hood unit 42. One end of the telescopic tube unit 41 is fixedly connected to the first connecting pipe 3 via a flange, and the other end is bolted to the dust collection hood unit 42. The output end of the cyclone centrifuge 2 is connected to the air inlet of a dust collection chamber 6 via a second connecting pipe 5. The dust collection chamber 6 is a rectangular structure welded from stainless steel. The dust collection chamber 6 is equipped with a vibration dust removal unit 7 and a filter unit 8. A dust collection box 9 is detachably connected to the dust outlet on the lower surface of the dust collection chamber 6. The air outlet of the dust collection chamber 6 is connected to a fan 11 via a third connecting pipe 10.

[0023] The telescopic tube unit 41 is arranged vertically and includes an outer tube 411, an inner tube 412, and a first drive structure. The upper end of the inner tube 412 passes through the lower opening of the outer tube 411 and extends into the interior of the outer tube 411. A sealing ring is fixedly attached to the outer surface of the upper end of the inner tube 412 by adhesive. The sealing ring is tightly fitted and sealed to the inner wall of the outer tube 411. The upper end of the outer tube 411 is fixedly connected to the end of the first connecting pipe 3 away from the cyclone centrifuge 2 by a flange. The lower end of the inner tube 412 is fixedly connected to the dust collection hood unit 42 by bolts. The first drive structure includes electric telescopic rods 413 symmetrically arranged on both sides of the outer tube 411. The fixed end of the electric telescopic rod 413 is fixedly connected to the corresponding side surface of the outer tube 411 by bolts. The telescopic end of the electric telescopic rod 413 is fixedly connected to the upper surface of the dust collection hood unit 42 by bolts.

[0024] The dust collection hood unit 42 includes a dust collection hood 421 made of PP. A dust collection chamber 422 is formed through the lower surface of the dust collection hood 421. The lower end of the inner tube 412 passes through the upper surface of the dust collection hood 421 and is connected to the inside of the dust collection chamber 422 by adhesive bonding. The dust collection chamber 422 is provided with four evenly and parallelly arranged first guide plates 423 made of PP with a thickness of 3mm, and four evenly and parallelly arranged second guide plates 424 made of PP with a thickness of 3mm. 423 is located below the second guide plate 424, and the first guide plate 423 and the second guide plate 424 are arranged perpendicular to each other; both the first guide plate 423 and the second guide plate 424 are adjustable guide plates, specifically: both ends of the guide plate are hinged to the inner wall of the dust hood 421 through a rotating shaft, and one end of the rotating shaft is provided with a locking bolt. By loosening the locking bolt, the angle between the guide plate and the axis of the dust chamber 422 can be adjusted, with an adjustment range of 0°-45°. After tightening the locking bolt, the angle of the guide plate is fixed.

[0025] like Figures 5 to 7 As shown, the filter unit 8 includes three sets of filter structures, which are arranged vertically and parallelly inside the dust collection chamber 6 near the air outlet. The filter structure includes a filter plate 81, with a filter module 82 embedded in the middle of the filter plate 81, and a HEPA 13 grade filter screen. One end of the filter plate 81, which passes through the slot in the side wall of the dust collection chamber 6, is fixed to a connecting plate 83 by bolts. Two connecting rods 84 are symmetrically arranged above and below the filter plate 81. One end of the connecting rod 84 is fixed to the inside of the connecting plate 83 by welding, and the other end is inserted into the connecting hole in the side wall of the dust collection chamber 6. The upper and lower surfaces of the filter plate 81 are symmetrically provided with magnetic snap-fit ​​structures 87. A handle 85 is fixed to the side surface of the connecting plate 83 away from the filter plate 81 by bolts. A button 86 is installed on the upper surface of the handle 85. The button 86 is electrically connected to an electromagnet 874 through a wire and is used to control the on and off of the electromagnet 874.

[0026] The magnetic snap-fit ​​structure 87 includes connecting grooves 871 symmetrically opened on the upper and lower surfaces of the filter plate 81. A fixing post 872 is provided inside the connecting groove 871. An induction magnet 873 is fixedly attached to the bottom surface of the fixing post 872 by adhesive. An electromagnet 874 is fixedly attached to the bottom surface of the connecting groove 871 by bolts. A first spring 875 is covered on the outer periphery of the electromagnet 874. The upper end of the first spring 875 is fixedly attached to the bottom surface of the fixing post 872 by welding, and the lower end is fixedly attached to the bottom surface of the connecting groove 871 by welding. Fixing holes adapted to the fixing post 872 are symmetrically opened on the upper and lower surfaces of the slotted side wall of the dust collection chamber 6. When the filter plate 81 needs to be installed, guide the filter plate 81 along the connecting rod 84 and insert it into the slot on the side wall of the dust collection chamber 6. At this time, the first spring 875 is in a naturally extended state. Under the elastic force of the first spring 875, the upper end of the fixing post 872 extends out of the connecting groove 871 and is inserted into the fixing hole, thus achieving the initial locking of the filter plate 81. Press the button 86 to energize the electromagnet 874. The electromagnet 874 and the induction magnet 873 are in contact, which drives the fixing post 872 to compress the first spring 875 and retract into the connecting groove 871, thereby unlocking the filter plate 81 and making it easy to pull out and disassemble.

[0027] like Figures 8 to 9 As shown, the vibration dust removal unit 7 includes vibration dust removal components symmetrically arranged on both sides of the inner wall of the dust collection chamber 6. The vibration dust removal components include a telescopic rod 71, a fixed rod 72, and a second drive structure. The outer surface of the fixed rod 72 is welded to the inner wall of the dust collection chamber 6. A limiting hole 73 is opened through the surface of the fixed rod 72 near the filter plate 81. The limiting hole 73 is opened along the axial direction of the fixed rod 72. One end of the telescopic rod 71 is inserted into the limiting hole 73. A limiting block 74 is symmetrically welded to the outer surface of the telescopic rod 71. A limiting groove 75 adapted to the limiting block 74 is symmetrically opened along the axial direction on the inner wall of the fixed rod 72. The limiting block 74 and the limiting groove 75 slide in cooperation. A compression spring 7 is welded to the surface of the telescopic rod 71 located inside the limiting hole 73. 6. The other end of the compression spring 76 abuts against the bottom surface of the limiting hole 73; the second drive structure includes a drive motor 77, which is fixed to the outer surface of the dust collection chamber 6 by bolts. The output shaft of the drive motor 77 passes through the side wall of the dust collection chamber 6 via a sealed bearing and is connected to a semi-circular gear 78 by a key. The corresponding section of the telescopic rod 71 located outside the limiting hole 73 is fixed with a rack 79 by welding. The rack 79 meshes with the semi-circular gear 78. The end of the telescopic rod 71 away from the fixed rod 72 passes through the limiting ring 710 and is fixed with a vibrating plate 711 by welding. The limiting ring 710 is fixed to the inner wall of the dust collection chamber 6 by bolts. The vibrating plate 711 is provided with a buffer rubber layer 712, made of silicone rubber, on the side near the filter plate 81 by adhesive bonding.

[0028] like Figures 10 to 11As shown, four magnetic suction posts 91, made of neodymium iron boron magnets, are evenly and vertically arranged along the edge of the upper surface of the dust collection box 9. The magnetic suction posts 91 are fixed to the upper surface of the dust collection box 9 by adhesive bonding. Magnetic suction holes 92 that are compatible with the magnetic suction posts 91 are opened around the dust outlet on the lower surface of the dust collection chamber 6. A sealing gasket is fixed to the upper surface of the dust collection box 9 by adhesive bonding. The sealing gasket is tightly fitted and sealed to the dust outlet end face on the lower surface of the dust collection chamber 6.

[0029] Working principle: Before the device is started, the height of the dust collection hood unit 42 is adjusted by controlling the extension and retraction of the electric telescopic rod 413 according to the height of the powder conveying equipment, so that the dust collection hood 421 is close to the dust generation area, and the angle of the first guide plate 423 and the second guide plate 424 is adjusted to match the dust diffusion direction.

[0030] When the fan 11 and the cyclone centrifuge 2 are started, the dust-laden airflow is drawn into the dust collection chamber 422 of the dust collection hood 421 under the negative pressure of the fan 11. After being rectified by the first guide plate 423 and the second guide plate 424, it enters the cyclone centrifuge 2 through the first connecting pipe 3. The cyclone centrifuge 2 performs preliminary separation of the dust-laden airflow. Large dust particles are thrown towards the wall of the device under the action of centrifugal force and fall down to the bottom dust discharge port (which can be connected to the dust collection box 9 or other collection device through a pipe). The dust-laden airflow (containing fine dust) after preliminary purification by the cyclone centrifuge 2 enters the dust collection chamber 6 through the second connecting pipe 5. The airflow passes through the filter module 82 of the filter unit 8, and the fine dust is intercepted by the filter module 82. The purified airflow is discharged by the fan 11 through the third connecting pipe 10.

[0031] During the filtration process, the drive motor 77 of the vibration dust removal unit 7 is activated. The drive motor 77 drives the semi-circular gear 78 to rotate. When the tooth surface of the semi-circular gear 78 meshes with the rack 79, the drive telescopic rod 71 moves inward along the limiting hole 73, the compression spring 76 is compressed, and the vibrating plate 711 moves away from the filter plate 81. When the toothless surface of the semi-circular gear 78 rotates to be opposite the rack 79, the meshing relationship is released, the telescopic rod 71 returns to its original position under the elastic force of the compression spring 76, and the vibrating plate 711 moves towards the filter plate 81 and impacts the filter plate 81. The surface; through the continuous rotation of the semi-circular gear 78, the vibrating plate 711 periodically impacts and vibrates the filter plate 81, causing the dust adhering to the surface of the filter module 82 to fall off and into the dust collection box 9; when the dust in the dust collection box 9 accumulates to a certain amount, the fan 11 is turned off, the dust collection box 9 is held and pushed downwards to make the magnetic column 91 disengage from the magnetic hole 92, the dust collection box 9 is removed and the dust is cleaned, after cleaning, the magnetic column 91 is aligned with the magnetic hole 92, and the dust collection box 9 is reset through magnetic attraction, and the sealing gasket is tightly attached to the dust outlet end face of the dust collection chamber 6.

[0032] When the filter module 82 needs to be replaced or cleaned, press the button 86 on the surface of the handle 85. The electromagnet 874 is energized and comes into contact with the induction magnet 873, causing the fixing post 872 to compress the first spring 875 and retract into the connecting groove 871. Hold the handle 85 and pull out the filter plate 81 along the connecting rod 84. After replacing or cleaning the filter module 82, insert the filter plate 81 into the slot on the side wall of the dust collection chamber 6 along the connecting rod 84. At this time, the first spring 875 is in a naturally extended state. The upper end of the fixing post 872 extends out of the connecting groove 871 and is inserted into the fixing hole under the elastic force of the first spring 875, realizing the initial locking of the filter plate 81 and completing the installation of the filter structure.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. 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 still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A powder conveying and dust collection device, characterized in that: The device includes a frame on which a cyclone centrifuge is fixedly mounted. The input end of the cyclone centrifuge is connected to a dust collection hood assembly via a first connecting pipe. The dust collection hood assembly includes a telescopic tube unit and a dust collection hood unit. One end of the telescopic tube unit is fixedly connected to the first connecting pipe, and the other end is fixedly connected to the dust collection hood unit. The output end of the cyclone centrifuge is connected to the air inlet of the dust collection chamber via a second connecting pipe. The dust collection chamber is equipped with a vibration dust removal unit and a filter unit. A dust collection box is detachably connected to the dust outlet on the lower surface of the dust collection chamber. The air outlet of the dust collection chamber is connected to a fan via a third connecting pipe.

2. The powder conveying and dust collection device according to claim 1, characterized in that: The telescopic tube unit is arranged vertically and includes an outer tube, an inner tube, and a first driving structure. The upper end of the inner tube passes through the lower opening of the outer tube and extends into the interior of the outer tube. A sealing ring is fixedly provided on the outer surface of the upper end of the inner tube, and the sealing ring is tightly fitted and sealed with the inner wall of the outer tube. The upper end of the outer tube is fixedly connected to the end of the first connecting pipe away from the cyclone centrifuge, and the lower end of the inner tube is fixedly connected to the dust collection hood unit. The first driving structure includes electric telescopic rods symmetrically arranged on both sides of the outer tube. The fixed end of the electric telescopic rod is fixedly connected to the corresponding side surface of the outer tube, and the telescopic end of the electric telescopic rod is fixedly connected to the upper surface of the dust collection hood unit.

3. The powder conveying and dust collection device according to claim 2, characterized in that: The dust collection hood unit includes a dust collection hood, the lower surface of which has a dust collection chamber, and the lower end of the inner tube penetrates the upper surface of the dust collection hood and communicates with the inside of the dust collection chamber. The inside of the dust collection chamber is provided with a plurality of uniformly and parallelly arranged first guide plates and a plurality of uniformly and parallelly arranged second guide plates. The first guide plates are located below the second guide plates, and the first guide plates and the second guide plates are arranged perpendicular to each other.

4. The powder conveying and dust collection device according to claim 3, characterized in that: Both the first and second guide vanes are adjustable-angle guide vanes.

5. The powder conveying and dust collection device according to claim 2, characterized in that: The filtration unit includes several filtration structures, which are arranged vertically and parallelly inside the dust collection chamber near the air outlet. Each filtration structure includes a filter plate with a filter module embedded in its center. A connecting plate is fixed to one end of the filter plate that passes through a slot in the side wall of the dust collection chamber. Connecting rods are symmetrically arranged above and below the filter plate, with one end fixed to the inside of the connecting plate and the other end inserted into a connecting hole in the side wall of the dust collection chamber. Magnetic engaging structures are symmetrically arranged on the upper and lower surfaces of the filter plate. A handle is fixed to the surface of the connecting plate away from the filter plate, and a button is installed on the upper surface of the handle. The button is electrically connected to an electromagnet to control the electromagnet's on / off state.

6. The powder conveying and dust collection device according to claim 5, characterized in that: The magnetic locking structure includes symmetrically formed connecting grooves on the upper and lower surfaces of the filter plate. A fixing post is provided inside the connecting groove. An induction magnet is fixed on the bottom surface of the fixing post. An electromagnet is fixed on the bottom surface of the connecting groove. A first spring is wrapped around the outer periphery of the electromagnet. The upper end of the first spring is fixed to the bottom surface of the fixing post, and the lower end is fixed to the bottom surface of the connecting groove. The upper and lower surfaces of the groove on the side wall of the dust collection chamber are symmetrically formed with fixing holes that are adapted to the fixing post.

7. The powder conveying and dust collection device according to claim 6, characterized in that: The vibration dust removal unit includes vibration dust removal components symmetrically arranged on the inner walls of both sides of the dust collection chamber. Each vibration dust removal component includes a telescopic rod, a fixed rod, and a second drive structure. The outer surface of the fixed rod is fixed to the inner wall of the dust collection chamber. A limiting hole is formed through the surface of the fixed rod near the filter plate, and the limiting hole is formed along the axial direction of the fixed rod. One end of the telescopic rod is inserted into the limiting hole. A limiting block is symmetrically arranged on the outer surface of the telescopic rod. A limiting groove adapted to the limiting block is symmetrically formed on the inner wall of the fixed rod along the axial direction. The limiting block and the limiting groove slide together to limit the rotation of the telescopic rod. The telescopic rod is located at... A compression spring is fixedly attached to one end surface inside the limiting hole, and the other end of the compression spring abuts against the bottom surface of the limiting hole; the second driving structure includes a drive motor, which is fixedly attached to the outer surface of the dust collection chamber. The output shaft of the drive motor passes through the side wall of the dust collection chamber via a sealed bearing and is connected to a semi-circular gear. A rack is fixedly attached to the outer surface of the corresponding section of the telescopic rod outside the limiting hole, and the rack meshes with the semi-circular gear; the end of the telescopic rod away from the fixed rod passes through the limiting ring and is fixedly attached to a vibrating plate. The limiting ring is fixedly attached to the inner wall of the dust collection chamber, and a buffer rubber layer is provided on the side of the vibrating plate near the filter plate.

8. The powder conveying and dust collection device according to claim 7, characterized in that: The upper surface of the dust collection box is provided with magnetic suction columns evenly and vertically along the edge, and magnetic suction holes adapted to the magnetic suction columns are opened around the dust outlet on the lower surface of the dust collection chamber; a sealing gasket is fixed on the upper surface of the dust collection box, and the sealing gasket is tightly fitted and sealed to the dust outlet end face on the lower surface of the dust collection chamber.

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