Double-air-duct dust removal system and laser cutting equipment

Abstract

According to the double-air-duct dust removal system and the laser cutting equipment, a first air duct and a second air duct are arranged in parallel at intervals, a first negative-pressure air suction opening is formed in the side, facing the second air duct, of the first air duct, and a first air door with a first positive-pressure air blowing opening is arranged at the first negative-pressure air suction opening; a first opening and closing door is arranged at the position, corresponding to the first positive pressure air blowing opening, of the first air door. Meanwhile, a second negative-pressure air suction opening is formed in the side, facing the first air duct, of the second air duct, a second air door with a second positive-pressure air blowing opening is movably arranged at the second negative-pressure air suction opening, and a second opening and closing door is movably arranged at the position, corresponding to the second positive-pressure air blowing opening, of the second air door; the opening and closing conditions of the first air door, the second air door, the first opening and closing door and the second opening and closing door can be controlled according to dust removal requirements, so that the first negative-pressure air suction opening or the second negative-pressure air suction opening can be quickly away from smoke dust of the first negative-pressure air suction opening or the second negative-pressure air suction opening, and the dust removal effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting dust removal, and in particular relates to a double-duct dust removal system and laser cutting equipment. Background Art

[0002] The laser cutting machine irradiates the surface of the workpiece with a high-power density laser beam, causing it to reach the melting point or boiling point. At the same time, an auxiliary gas coaxial with the laser beam is ejected to blow away the slag and dissipate heat or assist combustion in the cut part. In this process, a large amount of smoke and dust is generated, which seriously pollutes the working environment, not only reducing the service life of precision components, but also endangering the health of operators.

[0003] Currently, laser cutting dust removal systems primarily rely on the negative pressure created by an exhaust fan in the air duct, drawing the smoke generated by laser cutting into the duct through the duct's suction port. This suction port then exhausts the smoke and dust generated by laser cutting into the dust treatment system. However, due to the large cutting area on the cutting base of laser cutting equipment, smoke and dust located far from the duct's suction port are difficult to draw into the duct through the port, resulting in poor dust removal performance. Utility Model Content

[0004] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiment of the present utility model is to provide a dual-duct dust removal system to solve the problem in the prior art that the smoke and dust on the cutting base of the laser cutting equipment far away from the air suction port of the air duct is difficult to be sucked into the air duct through the air suction port, resulting in poor dust removal effect.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is to provide a dual-duct dust removal system, comprising:

[0006] An air duct assembly includes a first air duct and a second air duct arranged in parallel and spaced apart, wherein a first negative pressure air suction port is provided on a side of the first air duct facing the second air duct, and a second negative pressure air suction port is provided on a side of the second air duct facing the first air duct;

[0007] A first damper device includes a first damper movably provided at the first negative pressure air suction port and a first switch door provided on the first damper, the first damper is provided with a first positive pressure air blowing port, and the first switch door is movably installed at the first positive pressure air blowing port; and

[0008] A second damper device includes a second damper movably provided at the second negative pressure air suction port and a second switch door provided on the first damper, the second damper is provided with a second positive pressure air blowing port, and the second switch door is movably installed at the second positive pressure air blowing port;

[0009] Among them, when the pressure inside the first air duct is negative and the pressure inside the second air duct is positive, the first air door opens the first negative pressure air suction port, the first switch door closes the first positive pressure air blowing port, the second air door closes the second negative pressure air suction port, and the second switch door opens the second positive pressure air blowing port; when the pressure inside the first air duct is positive and the pressure inside the second air duct is negative, the first air door closes the first negative pressure air suction port, the first switch door opens the first positive pressure air blowing port, the second air door opens the second negative pressure air suction port, and the second switch door closes the second positive pressure air blowing port.

[0010] Furthermore, the first damper device also includes a first driving mechanism for driving the first damper to open or close the first negative pressure air suction port and a second driving mechanism for driving the first switch door to open or close the first positive pressure air blowing port. The second damper device also includes a third driving mechanism for driving the second damper to open or close the second negative pressure air suction port and a fourth driving mechanism for driving the second switch door to open or close the second positive pressure air blowing port. The second driving mechanism is arranged on the first switch door, and the fourth driving mechanism is arranged on the second switch door.

[0011] Furthermore, the dual-duct dust removal system also includes a cutting base located between the first duct and the second duct, and a plurality of cutting positions are arranged on the cutting base. A first negative pressure air suction port is respectively provided on the first duct corresponding to each cutting position, and a second negative pressure air suction port is respectively provided on the second duct corresponding to each cutting position. A first damper is movably provided at each of the first negative pressure air suction ports, and a second damper is movably provided at each of the second negative pressure air suction ports. A first positive pressure air blowing port is provided on each of the first dampers, and a second positive pressure air blowing port is provided on each of the second dampers. A first switch door is movably provided at each of the first positive pressure air blowing ports, and a second switch door is movably provided at each of the second positive pressure air blowing ports.

[0012] Furthermore, each of the first negative pressure air suction ports is arranged opposite to the corresponding second negative pressure air suction port, and the distance between two adjacent first negative pressure air suction ports is equal, and the distance between two adjacent second negative pressure air suction ports is equal.

[0013] Furthermore, the first damper device also includes a first rectangular outer frame arranged at the first negative pressure suction port, a first grille arranged in the first rectangular outer frame and a first rectangular seal arranged on the first rectangular outer frame, and the first damper is hinged to the first rectangular outer frame through a movable hinge.

[0014] Furthermore, the first switch door is slidably arranged at a position on the first air door corresponding to the first positive-pressure air outlet.

[0015] Furthermore, the second damper device also includes a second rectangular outer frame arranged at the second negative pressure suction port, a second grille arranged in the second rectangular outer frame and a second rectangular seal arranged on the second rectangular outer frame, and the second damper is hinged to the second rectangular outer frame through a movable hinge.

[0016] Furthermore, the second switch door is slidably arranged on the second air door at a position corresponding to the second positive-pressure air outlet.

[0017] Furthermore, the first air duct and the second air duct have the same structure, and the first air duct and the second air duct are symmetrically arranged.

[0018] Another purpose of the embodiments of the present utility model is to provide a laser cutting device that includes a dual-duct dust removal system provided by any of the above embodiments, so as to solve the technical problem in the prior art that smoke and dust on the cutting base of the laser cutting device that is far away from the air suction port of the air duct is difficult to be sucked into the air duct through the air suction port, resulting in poor dust removal effect.

[0019] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a laser cutting device, including the dual-duct dust removal system provided by any of the above-mentioned embodiments.

[0020] Compared with the prior art, the one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0021] The dual-duct dust removal system and laser cutting equipment in the embodiment of the present invention are configured by arranging a first duct and a second duct in parallel and at intervals on both sides of the bed of the laser cutting equipment, providing a first negative-pressure air suction port on the side of the first duct facing the second duct, and movably providing a first air door with a first positive-pressure air blowing port at the first negative-pressure air suction port, and movably providing a first switch door at a position corresponding to the first positive-pressure air blowing port on the first air door; at the same time, a second negative-pressure air suction port is provided on the side of the second duct facing the first duct, and movably providing a second air door with a second positive-pressure air blowing port at the second negative-pressure air suction port, and movably providing a second switch door at a position corresponding to the second positive-pressure air blowing port on the second air door. Through the above-mentioned structural arrangement, the opening and closing of the first air door, the second air door, the first switch door and the second switch door can be controlled respectively according to the dust removal needs, so that the first negative pressure suction port on the first air duct can suck the smoke generated by laser cutting, while the second air duct blows air toward the first negative pressure suction port through the second positive pressure blowing port to blow the smoke away from the first negative pressure suction port to the first negative pressure suction port, or while the second negative pressure suction port on the second air duct sucks the smoke generated by laser cutting, the first air duct can blow air toward the second negative pressure suction port through the first positive pressure blowing port to blow the smoke away from the second negative pressure suction port to the second negative pressure suction port, so that the first negative pressure suction port on the first air duct or the second negative pressure suction port on the second air duct can quickly suck the smoke generated by the laser cutting equipment, which is beneficial to improving the dust removal efficiency and dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a dual-duct dust removal system provided in an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure;

[0025] Figure 3 A schematic diagram of the three-dimensional structure of a first damper device provided in an embodiment of the present utility model;

[0026] Figure 4 An exploded view of a first damper device provided in an embodiment of the present utility model;

[0027] Figure 5Another schematic diagram of the three-dimensional structure of the dual-duct dust removal system provided by an embodiment of the utility model;

[0028] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of the second damper device provided in an embodiment of the present utility model;

[0030] Figure 8 This is an exploded view of the second damper device provided in an embodiment of the present utility model.

[0031] Among them, the reference numerals in the figures are:

[0032] 1- air duct assembly; 11- first air duct; 111- first negative pressure air suction port; 12- second air duct; 121- second negative pressure air suction port;

[0033] 2-first damper device; 21-first damper; 211-first positive pressure air outlet; 22-first switch door; 23-first drive mechanism; 24-second drive mechanism; 25-first rectangular outer frame; 26-first grille; 27-first rectangular seal;

[0034] 3-second damper device; 31-second damper; 311-second positive pressure air outlet; 32-second switch door; 33-third drive mechanism; 34-fourth drive mechanism; 35-second rectangular outer frame; 36-second grille; 37-second rectangular seal;

[0035] 4-cutting base; 41-cutting area;

[0036] 5-first hinge seat; 6-first Y-type joint; 7-second hinge seat;

[0037] 8-third articulated seat 9-second Y-type joint; 10-fourth articulated seat. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. In the description of this utility model, it should be noted that, unless otherwise specified or defined, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can mean fixed, removable, or integral; mechanical or electrical; direct or indirect through an intermediary; internal communication between two elements; or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] Please also refer to Figures 1 to 8 The dual duct dust removal system provided by the embodiment of the present utility model is now described. Figure 1 and Figure 5 The dual-duct dust removal system provided by the embodiment of the present invention includes an air duct assembly 1, a first damper device 2, and a second damper device 3. The air duct assembly 1 includes a first air duct 11 and a second air duct 12 arranged parallel and spaced apart on both sides of the bed of the laser cutting equipment. The first air duct 11 and the second air duct 12 have the same structure, and the first air duct 11 and the second air duct 12 are arranged symmetrically. Please refer to the following for further details. Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The first air duct 11 is provided with a first negative pressure air suction port 111 on the side facing the second air duct 12, and the second air duct 12 is provided with a second negative pressure air suction port 121 on the side facing the first air duct 11. Figure 2 、 Figure 3 、 Figure 6 and Figure 7The first damper device 2 includes a first damper 21 movably disposed at the first negative pressure air suction port 111 and a first switch door 22 disposed on the first damper 21. The first damper 21 is provided with a first positive pressure air blowing port 211. The first switch door 22 is movably disposed at the first positive pressure air blowing port 211. The second damper device 3 includes a second damper 31 movably disposed at the second negative pressure air suction port 121 and a second switch door 32 disposed on the second damper 31. The second damper 31 is provided with a second positive pressure air blowing port 221. The second switch door 32 is movably disposed at the second positive pressure air blowing port 221. When the first exhaust fan sucks the inside of the first air duct 11 to form a negative pressure, and the second exhaust fan sucks the inside of the first air duct 11 to form a negative pressure, that is, when the inside of the first air duct 11 and the second air duct 12 are both negative pressure, it is only necessary to actuate the first damper 21 through the first driving mechanism 23 to open the first negative pressure air suction port 111, actuate the first switch door 22 through the second driving mechanism 24 to close the first positive pressure air blowing port 211, actuate the second damper 31 through the third driving mechanism 33 to open the second negative pressure air suction port 121, and drive the second switch door 32 through the fourth driving mechanism 34 to close the second positive pressure air blowing port 221, so that the smoke generated by laser cutting can be simultaneously sucked through the first negative pressure air suction port 111 on the first air duct 11 and the second negative pressure air suction port 121 on the second air duct 12, which is beneficial to improve the dust removal efficiency and dust removal effect. When the first exhaust fan sucks the inside of the first air duct 11 to form a negative pressure, and the first blower sends air to the second air duct 12 to form a negative pressure inside the second air duct 12, that is, when the inside of the first air duct 11 is negative pressure and the inside of the second air duct 12 is positive pressure, it is only necessary to actuate the first damper 21 through the first driving mechanism 23 to open the first negative pressure air suction port 111, actuate the first switch door 22 through the second driving mechanism 24 to close the first positive pressure air blowing port 211, actuate the second damper 31 through the third driving mechanism 33 to close the second negative pressure air suction port 121, and actuate the second switch door 32 through the fourth driving mechanism 34 to open the second positive pressure air blowing port 221. While the negative pressure suction port 111 sucks the smoke generated by laser cutting, the second air duct 12 can blow air toward the first negative pressure suction port 111 on the first air duct 11 through the second positive pressure blowing port 221, and can blow the smoke away from the first negative pressure suction port 111 on the first air duct 11 to the first negative pressure suction port 111, so that the first negative pressure suction port 111 on the first air duct 11 can quickly suck the smoke generated by the laser cutting equipment, overcoming the defect that the smoke on the cutting base 4 of the laser cutting equipment that is far away from the air duct suction port is difficult to be sucked into the first air duct 11 through the first negative pressure suction port 111, resulting in poor dust removal effect, thereby helping to improve the dust removal efficiency and dust removal effect.When the second exhaust fan sucks the inside of the second air duct 12 to form a negative pressure, and the second blower sends air into the first air duct 11 to form a positive pressure inside the first air duct 11, that is, when the inside of the first air duct 11 is positive pressure and the inside of the second air duct 12 is negative pressure, it is only necessary to actuate the first damper 21 through the first driving mechanism 23 to close the first negative pressure air suction port 111, actuate the first switch door 22 through the second driving mechanism 24 to open the first positive pressure air blowing port 211, actuate the second damper 31 through the third driving mechanism 33 to open the second negative pressure air suction port 121, and actuate the second switch door 32 through the fourth driving mechanism 34 to close the second positive pressure air blowing port 221, and the second damper 31 on the second air duct 12 is opened. While the negative pressure suction port 121 sucks the smoke generated by laser cutting, the first air duct 11 can blow air toward the second negative pressure suction port 121 on the second air duct 12 through the first positive pressure blowing port 211, and can blow the smoke away from the second negative pressure suction port 121 on the second air duct 12 to the second negative pressure suction port 121, so that the second negative pressure suction port 121 on the second air duct 12 can quickly suck the smoke generated by the laser cutting equipment, overcoming the defect that the smoke on the cutting base 4 of the laser cutting equipment that is far away from the air duct suction port is difficult to be sucked into the second air duct 12 through the second negative pressure suction port 121, resulting in poor dust removal effect, thereby helping to improve the dust removal efficiency and dust removal effect.

[0042] Compared with the prior art, the dual-duct dust removal system provided by the embodiment of the present utility model is characterized in that a first duct 11 and a second duct 12 are arranged in parallel and at intervals on both sides of the bed of the laser cutting equipment, a first negative pressure air suction port 111 is provided on the side of the first duct 11 facing the second duct 12, a first air door 21 with a first positive pressure air blowing port 211 is movably provided at the first negative pressure air suction port 111, and a first switch door 22 is movably provided on the first air door 21 at a position corresponding to the first positive pressure air blowing port 211; at the same time, a second negative pressure air suction port 121 is provided on the side of the second duct 12 facing the first duct 11, a second air door 31 with a second positive pressure air blowing port 221 is movably provided at the second negative pressure air suction port 121, and a second switch door 32 is movably provided on the second air door 31 at a position corresponding to the second positive pressure air blowing port 221. Through the above-mentioned structural arrangement, the opening and closing of the first damper 21, the second damper 31, the first switch door 22 and the second switch door 32 can be controlled respectively according to the dust removal requirements, so that the first negative pressure air suction port 111 on the first air duct 11 can suck the smoke generated by laser cutting, while the second air duct 12 blows air toward the first negative pressure air suction port 111 through the second positive pressure blowing port 221, so as to blow the smoke away from the first negative pressure air suction port 111 to the first negative pressure air suction port 111, or to the second air duct 12. While the second negative pressure suction port 121 on the first air duct sucks the smoke generated by laser cutting, the first air duct 11 blows air toward the second negative pressure suction port 121 through the first positive pressure blowing port 211 to blow the smoke away from the second negative pressure suction port 121 to the second negative pressure suction port 121, so that the first negative pressure suction port 111 on the first air duct 11 or the second negative pressure suction port 121 on the second air duct 12 can quickly suck the smoke generated by the laser cutting equipment, which is beneficial to improving the dust removal efficiency and dust removal effect.

[0043] Please refer to Figure 3 、 Figure 4 、 Figure 7 and Figure 8 In some embodiments, the first damper device 2 further includes a first drive mechanism 23 for driving the first damper 21 to open or close the first negative pressure air suction port 111, and a second drive mechanism 24 for driving the first switch door 22 to open or close the first positive pressure air blowing port 211. The second damper device 3 further includes a third drive mechanism 33 for driving the second damper 31 to open or close the second negative pressure air suction port 121, and a fourth drive mechanism 34 for driving the second switch door 32 to open or close the second positive pressure air blowing port 221. The first drive mechanism 23 is disposed on the first air duct 11, the third drive mechanism 33 is disposed on the second air duct 12, the second drive mechanism 24 is disposed on the first damper 21, and the fourth drive mechanism 34 is disposed on the second damper 31. It should be noted that the first drive mechanism 23, the third drive mechanism 33, the second drive mechanism 24, and the fourth drive mechanism 34 can be, but are not limited to, cylinders.

[0044] Please refer to Figure 1 and Figure 5 In some embodiments, the dual-duct dust removal system further includes a cutting base 4 located between the first duct 11 and the second duct 12, and a plurality of cutting positions 41 are provided on the cutting base 4, and a first negative pressure air suction port 111 is provided on the first duct 11 corresponding to each cutting position 41, and a second negative pressure air suction port 121 is provided on the second duct 12 corresponding to each cutting position 41, and each first negative pressure air suction port 111 is movably provided with a first air door 21, and each second negative pressure air suction port 121 is movably provided with a second air door 31, each first air door 21 is provided with a first positive pressure blowing port 211, and each second air door 31 is provided with a second positive pressure blowing port 221, and each first positive pressure blowing port 211 is movably provided with a first switch door 22, and each second positive pressure blowing port 221 is movably provided with a second switch door 32. In this embodiment, a plurality of cutting positions 41 are provided on the cutting base 4, and the first air duct 11 and the second air duct 12 are provided on both sides of the cutting base 4, and a first negative pressure air suction port 111 is provided on the first air duct 11 corresponding to each cutting position 41, and a second negative pressure air suction port 121 is provided on the second air duct 12 corresponding to each cutting position 41. The opening and closing of the first air door 21, the second air door 31, the first switch door 22 and the second switch door 32 can be controlled respectively according to the dust removal requirements, and the corresponding cutting positions 41 on the cutting base 4 are sucked and dusted through each first negative pressure air suction port 111 and / or each second negative pressure air suction port 121, which not only improves the dust removal efficiency and dust removal effect, but also can accurately remove dust from each cutting position 41 on the cutting base 4.

[0045] Please refer to Figure 1 and Figure 5 In some embodiments, in order to further improve the dust removal efficiency and effect, each first negative pressure air suction port 111 is arranged opposite to the corresponding second negative pressure air suction port 121, and the distance between two adjacent first negative pressure air suction ports 111 is equal, and the distance between two adjacent second negative pressure air suction ports 121 is equal.

[0046] Please refer to Figure 2 、 Figure 3 and Figure 4In some embodiments, the first damper device 2 further includes a first rectangular outer frame 25 disposed at the first negative pressure air intake port 111, a first grille 26 disposed in the first rectangular outer frame 25, and a first rectangular seal 27 disposed on the first rectangular outer frame 25. The first damper 21 is hinged to the first rectangular outer frame 25 via a hinge. In this embodiment, the first grille 26 is fixedly mounted at the first negative pressure air intake port 111 via the first rectangular outer frame 25. During the process of extracting smoke and dust at the first negative pressure air intake port 111, the first grille 26 prevents larger materials or foreign matter from being sucked into the first air duct 11. The first rectangular seal 27 on the first rectangular outer frame 25 can seal the edge of the first damper 21 when the first damper 21 hingedly connected to the first rectangular outer frame 25 closes the first negative pressure air intake port 111, thereby effectively reducing air volume loss. It should be noted that the first damper 21 is hinged to the top of the first rectangular outer frame 25 through a movable hinge, the first driving structure is a first cylinder, the cylinder body of the first cylinder is hinged to the first air duct 11 through the first hinge seat 5 and the first pivot, and the piston rod of the first cylinder is hinged to the center position of the first damper 21 through the first Y-type joint 6, the second hinge seat 7 and the second pivot, which is conducive to the first damper 21 to fully open the first negative pressure suction port 111 and enhance the first negative pressure suction port 111's ability to suck smoke and dust.

[0047] Please refer to Figure 3 In some embodiments, the first switch door 22 is slidably arranged on the first damper 21 at a position corresponding to the first positive pressure blowing port 211, the second driving mechanism 24 is a third cylinder, the cylinder body of the third cylinder is fixedly arranged on the first damper 21, and the piston rod of the third cylinder is connected to the first switch door 22. The first switch door 22 can be driven by the third cylinder to slide to open or close the first positive pressure blowing port 211.

[0048] Please refer to Figure 6 、 Figure 7 and Figure 8In some embodiments, the second damper device 3 further includes a second rectangular outer frame 35 disposed at the second negative pressure air intake port 121, a second grille 36 disposed in the second rectangular outer frame 35, and a second rectangular seal 37 disposed on the second rectangular outer frame 35. The second damper 31 is hinged to the second rectangular outer frame 35 via a hinge. In this embodiment, the second grille 36 is fixedly mounted at the second negative pressure air intake port 121 via the second rectangular outer frame 35. During the process of smoke and dust extraction at the second negative pressure air intake port 121, the second grille 36 prevents larger materials or foreign matter from being sucked into the second air duct 12. The second rectangular seal 37 on the second rectangular outer frame 35 can seal the edge of the second damper 31 when the second damper 31 hingedly connected to the second rectangular outer frame 35 closes the second negative pressure air intake port 121, thereby effectively reducing air volume loss. It should be noted that the second damper 31 is hinged to the top of the second rectangular outer frame 35 through a movable hinge, the second driving structure is a second cylinder, the cylinder body of the second cylinder is hinged to the second air duct 12 through the third hinge seat 8 and the third pivot, and the piston rod of the second cylinder is hinged to the center position of the second damper 31 through the second Y-type joint 9, the fourth hinge seat 10 and the fourth pivot, which is conducive to the second damper 31 to fully open the second negative pressure suction port 121, thereby enhancing the second negative pressure suction port 121's ability to suck smoke and dust.

[0049] Please refer to Figure 7 In some embodiments, the second switch door 32 is slidably arranged on the second air door 31 at a position corresponding to the second positive pressure blowing port 221, the fourth driving mechanism 34 is a fourth cylinder, the cylinder body of the fourth cylinder is fixedly arranged on the second air door 31, and the piston rod of the fourth cylinder is connected to the second switch door 32. The second switch door 32 can be driven by the fourth cylinder to slide to open or close the second positive pressure blowing port 221.

[0050] The present utility model also provides a laser cutting device, which includes the dual-duct dust removal system in any of the above-mentioned embodiments. Since the laser cutting device has the same technical features as the dual-duct dust removal system in any of the above-mentioned embodiments, the laser cutting device has the same technical effects as the dual-duct dust removal system in any of the above-mentioned embodiments, which will not be elaborated here.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dual-duct dust removal system, characterized in that: include: An air duct assembly includes a first air duct and a second air duct arranged in parallel and spaced apart, wherein a first negative pressure air suction port is provided on a side of the first air duct facing the second air duct, and a second negative pressure air suction port is provided on a side of the second air duct facing the first air duct; A first damper device includes a first damper movably provided at the first negative pressure air suction port and a first switch door provided on the first damper, the first damper being provided with a first positive pressure air blowing port, the first switch door being movably installed at the first positive pressure air blowing port; as well as A second damper device includes a second damper movably provided at the second negative pressure air suction port and a second switch door provided on the first damper, the second damper is provided with a second positive pressure air blowing port, and the second switch door is movably installed at the second positive pressure air blowing port; Among them, when the pressure inside the first air duct is negative and the pressure inside the second air duct is positive, the first air damper opens the first negative pressure air suction port, the first switch door closes the first positive pressure air blowing port, the second air damper closes the second negative pressure air suction port, and the second switch door opens the second positive pressure air blowing port; when the pressure inside the first air duct is positive and the pressure inside the second air duct is negative, the first air damper closes the first negative pressure air suction port, the first switch door opens the first positive pressure air blowing port, the second air damper opens the second negative pressure air suction port, and the second switch door closes the second positive pressure air blowing port.

2. The dual-duct dust removal system according to claim 1, characterized in that: The first damper device also includes a first driving mechanism for driving the first damper to open or close the first negative pressure air suction port and a second driving mechanism for driving the first switch door to open or close the first positive pressure air blowing port. The second damper device also includes a third driving mechanism for driving the second damper to open or close the second negative pressure air suction port and a fourth driving mechanism for driving the second switch door to open or close the second positive pressure air blowing port. The second driving mechanism is arranged on the first switch door, and the fourth driving mechanism is arranged on the second switch door.

3. The dual-duct dust removal system according to claim 1, characterized in that: The dual-duct dust removal system also includes a cutting base located between the first duct and the second duct, and a plurality of cutting positions are arranged on the cutting base. A first negative pressure air suction port is respectively provided on the first duct corresponding to each cutting position, and a second negative pressure air suction port is respectively provided on the second duct corresponding to each cutting position. A first damper is movably provided at each of the first negative pressure air suction ports, and a second damper is movably provided at each of the second negative pressure air suction ports. A first positive pressure air blowing port is provided on each of the first dampers, and a second positive pressure air blowing port is provided on each of the second dampers. A first switch door is movably provided at each of the first positive pressure air blowing ports, and a second switch door is movably provided at each of the second positive pressure air blowing ports.

4. The dual-duct dust removal system according to claim 3, characterized in that: Each of the first negative pressure air suction ports is arranged opposite to the corresponding second negative pressure air suction port, and the distance between two adjacent first negative pressure air suction ports is equal, and the distance between two adjacent second negative pressure air suction ports is equal.

5. The dual-duct dust removal system according to claim 1, characterized in that: The first damper device also includes a first rectangular outer frame arranged at the first negative pressure suction port, a first grille arranged in the first rectangular outer frame and a first rectangular seal arranged on the first rectangular outer frame. The first damper is hinged to the first rectangular outer frame through a movable hinge.

6. The dual-duct dust removal system according to claim 5, characterized in that: The first switch door is slidably arranged at a position on the first air door corresponding to the first positive-pressure air outlet.

7. The dual-duct dust removal system according to claim 1, characterized in that: The second damper device also includes a second rectangular outer frame arranged at the second negative pressure suction port, a second grille arranged in the second rectangular outer frame and a second rectangular seal arranged on the second rectangular outer frame. The second damper is hinged to the second rectangular outer frame through a movable hinge.

8. The dual-duct dust removal system according to claim 7, characterized in that: The second switch door is slidably arranged on the second air door at a position corresponding to the second positive-pressure air outlet.

9. The dual-duct dust removal system according to any one of claims 1 to 8, characterized in that: The first air duct and the second air duct have the same structure, and the first air duct and the second air duct are symmetrically arranged.

10. A laser cutting device, characterized in that: It comprises a dual-duct dust removal system as described in any one of claims 1 to 9.

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