Dust removal device

Abstract

A dust removal device includes an annular hollow body and an air guiding unit. The body has a central hole, a plurality of air inlets and a plurality of air outlets at the top, a jet nozzle at the bottom, and a plurality of suction ports disposed inside and around the jet nozzles. The air guiding unit is housed within the body and corresponds to the jet nozzles. It includes an inner top plate, a central hole corresponding to the central hole, a plurality of air guiding ports penetrating the inner top plate and corresponding to the aforementioned air inlets, a flow guiding element connected to the bottom of the inner top plate, and an air guiding assembly connected between the bottom of the flow guiding element and the bottom of the body, forming an air collection channel. The air guiding assembly corresponds to the jet nozzles. An exhaust channel is defined between the inner top plate, the flow guiding element, the air guiding assembly, and the inner wall of the body. This exhaust channel communicates with the aforementioned suction ports, allowing dust particles generated during processing to be directly, quickly, and reliably removed, with even more significant effects during continuous processing.

Description

Technical Field

[0001] This utility model relates to a non-contact dust removal device, and more particularly to a dust removal device that can be directly used with processing tools and can improve dust removal efficiency. Background Technology

[0002] Currently, cleaning and dust removal systems used on thin roll materials (such as optical films, solar panels, glass substrates, PCBs / FPCBs, etc.) typically employ non-contact dry cleaning devices to prevent cleaning rollers or brushes from damaging the roll material surface through direct contact. The cleaning principle involves a special dust removal head generating a high-speed oscillating airflow in the center, causing vibration on the roll material surface to loosen the dust adhering to it. Negative pressure ports are located on both sides of the dust removal head, which, together with an external vacuum suction device, form a negative pressure chamber to create a vacuum effect and remove dust, thereby achieving the effect of dust removal from the roll material surface.

[0003] The specific structure of the dust removal head used in the aforementioned dry cleaning device can be seen in the earlier published utility model patent application No. 200812714. However, the disadvantage of this dust removal head is that the dust swept up by the airflow (compressed air) does not necessarily move only towards the negative pressure chamber. A small amount of dust may still splash out directly from the negative pressure chamber and re-adhere to the surface of the roll material. Utility model patent No. I717077 discloses a non-contact dust removal device. This device has a dust removal box with a dust removal space covering the nozzle that blows air onto the material to be dusted. A negative pressure box for storing the material to be dusted is connected below the dust removal box. The negative pressure box and the surface of the conveyor table form a negative pressure space. In this way, the addition of the negative pressure box and dust removal box expands the dust absorption range on the surface of the material to be dusted, effectively preventing dust from escaping from the negative pressure space. However, this dust removal device also increases the equipment cost due to the addition of the negative pressure box and dust removal box.

[0004] Furthermore, and more importantly, currently known dust removal devices and equipment can only perform surface dust removal and cleaning on rolled materials that have already been processed. The main reason is that existing dust removal devices or equipment cannot be directly matched with or accommodated within processing tools. Further analysis reveals that although most of the dust generated during the process adheres to the surface of the rolled material via electrostatic adhesion, a small amount of dust may still adhere to the surface of the rolled material after condensation due to the high temperature generated during processing. Therefore, it is difficult to be directly sprayed away by the airflow of the dust removal head. Thus, if dust removal can be carried out immediately during the processing of the rolled material, allowing the high-temperature dust to be sucked away before it condenses and adheres, it can not only reduce the time required for subsequent dust removal and cleaning but also improve the dust removal rate of the dust removal equipment, achieving the optimal state for dust removal and cleaning. Utility Model Content

[0005] The dust removal device of this utility model is configured as a ring-shaped shell with a central hole for extending processing tools. A plurality of annular exhaust channels are arranged around the central hole so that dust particles generated during processing can be directly, quickly and reliably removed. This effect is even more significant during continuous processing.

[0006] The dust removal device of this utility model utilizes a vertical air intake straight-through mode to perform airflow spraying and dust suction. Not only is the flow channel short and the flow rate fast, but the power loss is also relatively low. Furthermore, through a flow guiding element, an air guide plate, and an irregularly toothed flow collecting surface, the airflow is gradually sprayed from top to bottom, making the sprayed airflow more uniform and the flow rate evenly increased, thereby doubling the overall dust removal and cleaning effect.

[0007] The dust removal device in this product also has multiple adjustment plates installed on the exhaust channel. By slightly displacing the adjustment plates radially, the suction force of the inner and outer rings of the exhaust channel can be adjusted according to the different pump suction pressures, so as to balance the airflow pressure of the inner and outer rings, thereby achieving a uniform and stable recovery airflow effect.

[0008] Therefore, the dust removal device proposed in this utility model includes: a body, which is an annular hollow shell with a central hole penetrating along an axis, a plurality of air inlets and a plurality of air outlets disposed on the top of the body, a jet nozzle located at the bottom of the body, and a plurality of air intakes arranged inside and on the outer periphery of the jet nozzle. An air guiding unit is housed inside the body and corresponds to the jet nozzle. The air guiding unit includes an inner top plate, a central hole oriented relative to the axis and corresponding to the central hole of the body, a plurality of air guiding ports penetrating the inner top plate and corresponding to the aforementioned air inlets, a flow guiding element connected to the bottom of the inner top plate, and an air guiding assembly connected between the bottom of the flow guiding element and the bottom of the body and forming an air collecting channel. The air guiding assembly corresponds to the jet nozzle, and an exhaust channel communicating with the aforementioned air intake is defined between the inner top plate, the flow guiding element, the air guiding assembly, and the inner wall of the body.

[0009] According to the dust removal device of the present invention, the main body includes an outer ring and an inner ring that surround each other, an annular top cover covering the top of the inner ring and the outer ring, an annular outer bottom cover, and an annular inner bottom cover. An internal space is formed between the inner ring and the outer ring. The air guiding unit is disposed in the internal space. The central hole, air inlet and air outlet of the main body are all disposed on the top cover. The outer bottom cover is spaced around the outer periphery of the inner bottom cover, so that an annular air jet is formed between the two.

[0010] According to the dust removal device of the present invention, the aforementioned air intake ports of the main body are respectively disposed on the inner bottom cover and the outer bottom cover, and the aforementioned air intake ports on the inner bottom cover and the outer bottom cover are respectively arranged in a ring shape, surrounding the circumference of the ring-shaped air intake port in an inner and outer ring arrangement.

[0011] According to the dust removal device of the present invention, the inner top plate of the air guiding unit has a plurality of raised steps corresponding to the aforementioned air inlets, a plurality of air vents penetrating the inner top plate from the center of the raised steps, and a plurality of open spaces located between each pair of raised steps. The aforementioned air vents are respectively connected to the aforementioned air inlets of the main body, and the open spaces of the inner top plate are connected to the aforementioned exhaust ports of the main body.

[0012] According to the dust removal device of the present invention, the air guiding component of the air guiding unit includes an annular air guiding plate, and an inner collecting ring and an outer collecting ring arranged around each other. The outer periphery of the inner collecting ring is provided with a stepped surface and a collecting surface from top to bottom. Corresponding to the inner collecting ring, the inner periphery of the outer collecting ring is also provided with a stepped surface and a collecting surface from top to bottom. The air guiding plate is placed on the stepped surface of the inner collecting ring and the outer collecting ring. Corresponding to the air guiding element, the air guiding plate has a plurality of air guiding holes. The inner collecting ring and the outer collecting ring are symmetrically arranged and form an air collecting channel communicating with the aforementioned air guiding holes through their collecting surfaces.

[0013] According to the dust removal device of the present invention, the flow guiding element is an annular disc with a through hole axial to the central hole of the body and a plurality of flow guiding holes penetrating the disc. The aforementioned flow guiding holes correspond to the gas collection channel, and the flow guiding holes of the gas guiding plate are staggered to correspond to the flow guiding holes of the flow guiding element.

[0014] According to the dust removal device of the present invention, the gas collection channel comprises a narrowing section, a first vertical section, a first expansion section, a second vertical section and a second expansion section connected in sequence.

[0015] According to the dust removal device of the present invention, it further includes a plurality of adjusting plates, which are radially movable and disposed on the top of the inner top plate, so that an exhaust channel with a variable diameter is formed between the adjusting plate and the inner wall of the body.

[0016] According to the dust removal device of the present invention, the air jet nozzle of the main body has a constricted section and a straight section adjacent to the air collection channel.

[0017] According to the dust removal device of the present invention, the bottom of the aforementioned air intake of the main body is concave.

[0018] According to the dust removal device of the present invention, it further includes a plurality of air inlets, which are connected to the air inlet to pump airflow from the outside into the main body.

[0019] According to the dust removal device of the present invention, it further includes a plurality of exhaust pipes connected to the aforementioned exhaust port to draw out the airflow inside the body.

[0020] As described above, the dust removal device of this utility model allows the processing tool to be inserted into the central hole of the annular body, and a plurality of annular exhaust channels are arranged around the central hole, so that dust particles generated during the processing can be directly, quickly, and reliably sucked away. Furthermore, the aforementioned two annular exhaust channels are located on both sides of the jet nozzle, forming an inner and outer ring encirclement. Therefore, by utilizing a vertical air intake direct-flow mode to perform airflow spraying and dust suction, not only is the flow path short and the flow velocity high, but the relative power loss is also low. The dust raised during the processing is quickly sucked away, thereby multiplying the overall dust removal and cleaning effect. In addition, depending on the pump suction pressure, the adjustment plate can be radially fine-tuned to adjust the suction force of the inner and outer rings of the exhaust channels, so as to balance the airflow pressure of the inner and outer rings, thereby achieving a uniform and stable recovery airflow effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of a preferred embodiment of the dust removal device of this utility model.

[0022] Figure 2 This is an exploded perspective view of the dust removal device of this utility model.

[0023] Figure 3 This is a cross-sectional view of the dust removal device, illustrating the airflow process.

[0024] Figure 4 This is a cross-sectional view of the dust removal device, illustrating the exhaust flow process of the airflow.

[0025] Figure 5 It is a plan view illustrating the assembled planar state of an inner bottom cover and an outer bottom cover.

[0026] Figure 6 It is a plan view illustrating the assembly of multiple adjustment plates on the inner top plate.

[0027] Explanation of markings in the diagram:

[0028] 1: Dust removal device; 10: Outer ring; 11: Inner ring; 111: Center hole; 12: Internal space; 20: Top cover; 21: Center hole; 22: Air inlet; 23: Exhaust outlet; 24: Assembly hole; 30: Outer bottom cover; 31: Air intake; 32: Air jet outlet; 321: Narrowing section; 322: Straight hole section; 40: Inner bottom cover; 41: Center hole; 42: Air intake; 50: Inner top plate; 51: Central hole; 52: Stepped section; 53: Vent; 54: Open space; 55: Lock hole; 60: Flow guiding element; 61: Through hole; 62: Flow guiding hole; 70: Air guiding assembly Components; 71: Air guide plate; 711: Air guide hole; 72: Inner collector ring; 721: Step surface; 722: Collector surface; 73: Outer collector ring; 731: Step surface; 732: Collector surface; 74: Reduction section; 75: First vertical section; 76: First expansion section; 77: Second vertical section; 78: Second expansion section; 80: Adjustment plate; 81: Adjustment hole; 100: Body; 101: Air collection channel; 102: Exhaust channel; 200: Air guide unit; 300: Air inlet; 400: Exhaust pipe; 500: Processing tool; 501: Front end; A: Axis; R: Radial. Detailed Implementation

[0029] Reference Figure 1 and Figure 2 A preferred embodiment of the dust removal device 1 of this utility model includes a main body 100, an air guiding unit 200, a plurality of air inlets 300 and a plurality of exhaust pipes 400.

[0030] Continue to refer to Figure 3 The body 100 is a hollow shell in the shape of a circular ring, including an outer ring 10 and an inner ring 11 that are coaxially ringed, an annular top cover 20 that covers the top of the outer ring 10 and the inner ring 11, an annular outer bottom cover 30, and an inner bottom cover 40 that is also annular and has an outer diameter smaller than the inner diameter of the outer bottom cover 30.

[0031] The outer ring 10 is a hollow annular shell. The inner ring 11 is a hollow annular shell with a central hole 111 that is axially opposite to a central hole 21 of the top cover 20 and passes through along an axis A, and is located at the center of the outer ring 10.

[0032] The inner ring 11 is fitted inside the outer ring 10, so that an internal space 12 with open ends is formed between the inner ring 11 and the outer ring 10, in which the air guiding unit 200 is placed, and the inner ring 11 has a central hole 111 with open ends.

[0033] The top cover 20 has a central hole 21 that extends along axis A and is axially aligned with the central hole 111 of the inner ring 11, and a plurality of air inlets 22 and a plurality of exhaust ports 23 surrounding the outer periphery of the central hole 21. In this embodiment, the aforementioned air inlets 22 and exhaust ports 23 are arranged alternately and at equal intervals on the top cover 20, with three air inlets 22 and three exhaust ports 23 each. The diameter of the air inlets 22 is smaller than the diameter of the exhaust ports 23, in order to achieve a pressure balance effect.

[0034] The outer bottom cover 30 is a ring-shaped disc fixed to the bottom of the outer ring 10, and has a plurality of equally spaced air intakes 31. The aforementioned air intakes 31 are arranged in a concentric arc shape. In this embodiment, a total of three air intakes 31 are provided.

[0035] The inner bottom cover 40 is an annular disc fixed to the bottom of the inner ring 11, and has a central hole 41 extending along the axis A and axially aligned with the central hole 111 of the inner ring 11, as well as a plurality of spaced-apart air intakes 42. There are three air intakes 42 in total, arranged concentrically in an arc shape. The outer bottom cover 30 is spaced around the outer periphery of the inner bottom cover 40, resulting in an annular air intake 32 between them. Figure 5 .

[0036] In this embodiment, both the outer bottom cover 30 and the inner bottom cover 40 are provided with three air intakes 31 and 42. Of course, they can also be provided with four, five, six, etc., as long as the effect of balanced airflow distribution can be achieved, the number is not limited. In this embodiment, the various components are fixed together by screw locking. Therefore, the outer ring 10, the inner ring 11, the top cover 20, the outer bottom cover 30, the inner bottom cover 40, the inner top plate 50, the flow guiding element 60, the inner flow collecting ring 72, and the outer flow collecting ring 73 are each provided with a corresponding plurality of locking holes, so as to use an equal number of bolts for axial or radial locking. Since bolt locking with locking holes is a common structure, it will not be described in detail, and the bolts and their numbers are not shown.

[0037] The air guiding unit 200 is housed within the internal space 12 of the body 100 and corresponds to the jet nozzle 32. The air guiding unit 200 includes an inner top plate 50, a flow guiding element 60 connected to the bottom of the inner top plate 50, and an air guiding assembly 70 connected between the bottom of the flow guiding element 60 and the bottom of the body 100, forming an air collection channel 101. Figure 3 The air guide assembly 70 corresponds to the jet port 32, and an exhaust channel 102 communicating with the aforementioned intake port 42 is defined between the inner top plate 50, the flow guide element 60, the air guide assembly 70, and the inner wall of the body 100. Figure 4 .

[0038] The inner top plate 50 has a central hole 51 axially relative to axis A and corresponding to the central hole 21 of the body 100, a plurality of raised steps 52 corresponding to the aforementioned air inlets 22, a plurality of vents 53 penetrating the body of the inner top plate 50 from the center of the raised steps 52, and a plurality of fan-shaped open spaces 54 located between pairs of raised steps 52. The aforementioned vents 53 are respectively connected to the aforementioned air inlets 22 of the body 100, and the open spaces 54 of the inner top plate 50 are directly connected to the aforementioned exhaust outlets 23 of the body 100. Figure 4 .

[0039] The flow guiding element 60 is an annular disk with a through hole 61 axial to the central hole 21 of the body 100, and a plurality of flow guiding holes 62 arranged in two concentric rings and penetrating the disk. The aforementioned flow guiding holes 62 correspond to the gas collection channel 101. In this embodiment, the aforementioned flow guiding holes 62 are V-shaped.

[0040] The air guiding assembly 70 includes an annular air guiding plate 71, and an inner collecting ring 72 and an outer collecting ring 73 coaxially fitted together. The inner collecting ring 72 is stepped, with a stepped surface 721 and a collecting surface 722 adjacent to the stepped surface 721 on its outer periphery from top to bottom. Corresponding to the structural arrangement of the inner collecting ring 72, the outer collecting ring 73 also has a stepped surface 731 and a collecting surface 732 adjacent to the stepped surface 731 on its inner periphery from top to bottom. The air guiding plate 71 is placed on the stepped surfaces 721 and 731 of the inner collecting ring 72 and the outer collecting ring 73, and is thus clamped and fixed by the two stepped surfaces 721 and 731 (in this embodiment, it is fixed radially by bolts, not shown in the figure), and forms a corresponding flow guiding element 60. In this embodiment, the air guide plate 71 has a plurality of air guide holes 711, which are staggered to correspond to the air guide holes 62 of the flow guide element 60, and the holes are not directly opposite the air collection channel 101, so as to prevent the high-pressure airflow from directly impacting the air guide holes 711, thereby causing the hole wall to deform.

[0041] Since the inner collecting ring 72 and the outer collecting ring 73 are symmetrically arranged, and their irregular toothed collecting surfaces 722 and 732 correspond to form the gas collecting channel 101 connected to the aforementioned air guide hole 711, the gas collecting channel 101 includes a narrowing section 74, a first vertical section 75, a first expansion section 76, a second vertical section 77 and a second expansion section 78, which are connected from top to bottom.

[0042] Furthermore, the nozzle 32 of the main body 100 has a Y-shaped aperture and a V-shaped constriction section 321 adjacent to the gas collection channel 101 and a straight section 322. The V-shaped constriction section 321 is connected to the bottom of the second expansion section 78. With this configuration, when airflow is pumped into the gas collection channel 101, the constriction and expansion of the channel will create an airflow oscillation effect during the gas collection process, further accelerating the airflow and improving the jet speed and efficiency.

[0043] Reference Figure 2 and Figure 4 The present invention also includes a plurality of adjusting plates 80, which are radially displaceable and disposed on the top of the inner top plate 50, so that an exhaust channel 102 with a variable diameter is formed between the adjusting plate 80 and the inner wall of the body 100. Figure 6 In this embodiment, since the open space 54 of the inner top plate 50 is fan-shaped, each of the adjustment plates 80 is also fan-shaped corresponding to the open space 54. The open space 54 of the inner top plate 50 has a plurality of locking holes 55, and each of the adjustment plates 80 has a plurality of adjustment holes 81 corresponding to the aforementioned locking holes 55. The aforementioned adjustment holes 81 are elongated holes extending along a radial direction R. By adjusting each adjustment plate 80 back and forth along the radial direction R and securing it with a plurality of screws (not shown), the radial opening of the exhaust channel 102 can be adjusted. Figure 6 For example, when the adjusting plate 80 is displaced in the direction of axis A, the opening of the exhaust channel 102 at the top periphery of the inner top plate 50 will increase, and the suction force of the recovered gas will increase (see...). Figure 4 Conversely, if the adjusting plate 80 is displaced in the opposite direction to axis A, the opening of the exhaust channel 102 at the top periphery of the inner top plate 50 will decrease, and the suction force of the recovered gas will decrease. Therefore, when the pump's inner and outer ring pressures are different, the recovered airflow in the inner and outer rings of the exhaust channel 102 outside the inner collector ring 72 and the outer collector ring 73 can be more even. This adjustment achieves the effect of even suction force in the inner and outer rings of the exhaust channel 102. Figure 4 .

[0044] The aforementioned air inlet 300 is connected to each of the air inlets 22, allowing external airflow to be pumped into the body 100. In this embodiment, the air pressure source is generated by an air supply blower, not shown in the figure.

[0045] The aforementioned exhaust pipe 400 corresponds to and is connected to each of the exhaust ports 23 to pump the airflow outward from the body 100. In this embodiment, the suction is generated by an air intake blower (not shown). Additionally, a pressure gauge can be connected to one side of the aforementioned air inlet 300 and the aforementioned exhaust pipe 400 for monitoring purposes by staff (not shown).

[0046] Regarding the use of the dust removal device of this utility model, the entire dust removal device 1 is securely pre-installed on a machine base (not shown) using a plurality of assembly holes 24 on the top cover 20. Then, a front end 501 (laser head) of a processing tool 500 is sequentially inserted into the central hole 21 of the top cover 20 and the central hole 111 of the inner ring 11, so as to directly process the workpiece below the dust removal device 1. In this embodiment, the processing tool 500 can be a laser gun. When the processing tool 500 generates an electric arc to perform processes such as laser micro-etching, micro-drilling, cutting, engraving, surface activation, and contaminant removal on a workpiece (such as a thin film, not shown), the plasma and dust generated during the processing need to be removed by the dust removal device 1. Figure 4 .

[0047] When performing dust removal and cleaning operations simultaneously on the workpiece, such as Figure 3 As shown, when airflow is pumped in from the air inlet 22 of the top cover 20, it flows directly downwards along the guide hole 62 of the guide element 60 through the air vent 53, achieving a rapid jet effect in the front section through the V-shaped guide hole 62. Next, the airflow flows downwards through a plurality of guide holes 711 on the air guide plate 71, allowing the airflow to flow more evenly towards the air collection channel 101. Continuing downwards, the airflow passes through the irregularly toothed collection surfaces 722 and 732 of the inner and outer collection rings 72 and 73, sequentially passing through the narrowing section 74, the first vertical section 75, the first expanding section 76, the second vertical section 77, and the second expanding section 78. This narrowing and expanding of the interlaced channel arrangement creates an airflow oscillation effect during the air collection process, further accelerating the flow of the subsequent airflow, multiplying the overall jet efficiency, and achieving better dust removal, quickly removing plasma dust and other substances from laser processing.

[0048] like Figure 4 As for the dust collection method, during the air jet process, the aforementioned air intakes 31 and 42 are used to draw the dust in the vertical direction. Since the present invention utilizes the aforementioned air intakes 31 and 42 to surround the inner and outer rings of the annular air jet 32, after the air jet, a large amount of dust is quickly drawn up through the two annular airflows and then drawn out through the exhaust channel 102 surrounding the outer side of the air guide unit 200, the fan-shaped open space 54 of the inner top plate 50 and the exhaust port 23 of the top cover 20, and finally the aforementioned exhaust pipe 400, thereby achieving a faster dust removal and cleaning effect.

[0049] In summary, the effectiveness and advantages of this dust removal device are summarized as follows:

[0050] 1. The entire dust removal device 1 is designed in a cylindrical shape, and a coaxial central hole 21, 111 is opened in the center, so that this utility model can be directly used with processing tools. In this way, the dust particles generated during the processing of rolled materials can be quickly and immediately removed, thereby reducing the time for subsequent dust removal and cleaning, and improving the dust removal rate of the dust removal equipment.

[0051] Second, since the air inlet 22 and the exhaust outlet 23 are arranged in a ring at intervals on the top of the dust removal device 1, the air jet and exhaust flow direction is vertically up and down, the overall setting is simpler and the flow channel is shorter, the suction air velocity is faster, and the dust removal and cleaning efficiency can be improved.

[0052] Third, the double-layered inner and outer ring air intake structure ensures that dust is completely sucked up. In addition, the main body 100 is arranged in a ring shape. After the airflow is introduced into the internal space 12 from the top, it flows in a radial ring shape, making the airflow distribution more uniform and stable. This is even more effective during continuous processing.

[0053] Fourth, after the airflow is accelerated by the V-shaped guide hole 62 of the guide element 60, the airflow then passes through the guide hole 711 of the air guide plate 71. Since the diameter of the guide hole 711 is smaller than that of the guide hole 62, the pumped airflow is more evenly distributed, resulting in a stable flow effect. Furthermore, the guide holes 711 are staggered to correspond to the guide holes 62 of the guide element 60, and the holes are not directly opposite the air collection channel 101. This prevents the high-pressure airflow from directly impacting the guide holes 711 and causing deformation, thereby extending the service life of the air guide plate 71 and reducing wear and tear.

[0054] 5. Because the collecting surfaces 722 and 732 of the inner collecting ring 72 and the outer collecting ring 73 are set in an irregular tooth shape, the air collecting channel 101 forms the narrowing section 74, the first vertical section 75, the first expansion section 76, the second vertical section 77 and the second expansion section 78 from top to bottom. By narrowing the diameter and expanding the interlaced channel, the air collecting process produces an airflow oscillation effect, thereby accelerating the flow of the air in the later stage and doubling the jet efficiency.

[0055] 6. By slightly adjusting the opening of the exhaust channel 102 along the radial direction R using the adjustment plate 80, when the pump suction pressure is different, the recovered airflow outside the inner collector ring 72 and the outer collector ring 73 can be made more uniform, thereby achieving the effect of uniform suction force between the inner and outer rings of the exhaust channel 102.

[0056] It is worth mentioning that, compared to previous laser processing methods, which required pre-masking of non-processed areas on the workpiece to prevent dust contamination, this invention eliminates the need for pre-masking due to its vertical air intake for rapid spraying and dust extraction, thus saving processing costs.

[0057] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model, or reasonable combinations of solutions from various embodiments, are all within the protection scope of the present utility model.

Claims

1. A dust removal device, characterized in that, Includes: A body is an annular hollow shell with a central hole through a central axis, a plurality of air inlets and a plurality of air outlets located on the top of the body, a jet nozzle located at the bottom of the body, and a plurality of air intakes arranged inside and on the outer periphery of the jet nozzle. An air guiding unit is housed inside the body and corresponds to the jet nozzle. The air guiding unit includes an inner top plate, a central hole oriented relative to the axis and corresponding to the central hole of the body, a plurality of air guiding ports penetrating the inner top plate and corresponding to the aforementioned air inlet, a flow guiding element connected to the bottom of the inner top plate, and an air guiding assembly connected between the bottom of the flow guiding element and the bottom of the body and forming an air collecting channel. The air guiding assembly corresponds to the jet nozzle, and an exhaust channel communicating with the aforementioned air inlet is defined between the inner top plate, the flow guiding element, the air guiding assembly, and the inner wall of the body.

2. The dust removal device as described in claim 1, characterized in that, The main body includes an outer ring and an inner ring that surround each other, an annular top cover covering the top of the inner ring and the outer ring, an annular outer bottom cover, and an annular inner bottom cover. An internal space is formed between the inner ring and the outer ring. The air guiding unit is disposed in the internal space. The central hole, air inlet, and air outlet of the main body are all located on the top cover. The outer bottom cover is spaced around the outer periphery of the inner bottom cover, so that an annular air jet is formed between the two.

3. The dust removal device as described in claim 2, characterized in that, The aforementioned air intake ports of the main body are respectively disposed on the inner bottom cover and the outer bottom cover, and the aforementioned air intake ports on the inner bottom cover and the outer bottom cover are respectively arranged in a ring shape, surrounding the circumference of the annular air intake port in an inner and outer ring arrangement.

4. The dust removal device as described in claim 2, characterized in that, The inner top plate of the air guiding unit has a plurality of raised steps corresponding to the aforementioned air inlets, a plurality of air vents penetrating the inner top plate from the center of the raised steps, and a plurality of open spaces located between each pair of raised steps. The aforementioned air vents are respectively connected to the aforementioned air inlets of the main body, while the open spaces of the inner top plate are connected to the aforementioned exhaust ports of the main body.

5. The dust removal device as described in claim 1, characterized in that, The air guiding component of the air guiding unit includes an annular air guiding plate, and an inner collecting ring and an outer collecting ring arranged around each other. The outer periphery of the inner collecting ring has a stepped surface and a collecting surface from top to bottom. Corresponding to the inner collecting ring, the inner periphery of the outer collecting ring also has a stepped surface and a collecting surface from top to bottom. The air guiding plate is placed on the stepped surface of the inner collecting ring and the outer collecting ring, and corresponding to the air guiding element, the air guiding plate has a plurality of air guiding holes. The inner collecting ring and the outer collecting ring are symmetrically arranged and form the air collecting channel connected to the aforementioned air guiding holes by means of their collecting surfaces.

6. The dust removal device as described in claim 5, characterized in that, The flow guiding element is an annular disk with a through hole axial to the central hole of the main body and a plurality of flow guiding holes penetrating the disk. The aforementioned flow guiding holes correspond to the gas collection channel, and the gas guiding holes of the gas guiding plate are staggered to correspond to the flow guiding holes of the flow guiding element.

7. The dust removal device as described in claim 5, characterized in that, The gas collection channel comprises a narrowed section, a first vertical section, a first expanded section, a second vertical section, and a second expanded section connected in sequence.

8. The dust removal device as described in claim 1, characterized in that, It also includes a plurality of adjustment plates, which are radially movable and disposed on the top of the inner top plate, so that an exhaust channel with variable diameter is formed between the adjustment plate and the inner wall of the body.

9. The dust removal device as described in claim 1, characterized in that, The jet nozzle of the body has a constricted section adjacent to the gas collection channel and a straight section.

10. The dust removal device as described in claim 1, characterized in that, The bottom of the aforementioned air intake of the main body is concave.

11. The dust removal device as described in claim 1, characterized in that, It also includes a plurality of air inlets, which are connected to the air inlets to pump airflow from the outside into the body.

12. The dust removal device as described in claim 1, characterized in that, It also includes a plurality of exhaust pipes connected to the aforementioned exhaust port to draw airflow outward from the body.

Images