Laser cutting smoke dust negative pressure adsorption purification device

Abstract

The utility model discloses a kind of laser cutting smoke dust negative pressure adsorption purification device, comprising: base and purification mechanism;The purification mechanism is arranged on base, and purification mechanism includes fan for forming negative pressure and the purification module for purifying the flue gas generated by laser cutting;Wherein, the fan is installed in base one side, and purification module is arranged in base other side;The purification module is set on base by support leg, and purification module includes front purification tank, middle purification tank and rear purification tank, adsorption cover is installed at the end of negative pressure pipe, pipeline is arranged between rear purification tank and the air inlet end of fan, and fan generates negative pressure so that flue gas can be purified by successively passing through front purification tank, middle purification tank and rear purification tank after adsorption cover. Multiple filtration system is adopted, from primary filtration large particle to intercept tiny dust, to oxidize and decompose harmful gas, photolyze residual pollutant, realize the full-process efficient purification of particulate matter and harmful gas.

Description

Technical Field

[0001] This utility model relates to the technical field of purification equipment for laser cutting, specifically a negative pressure adsorption purification device for laser cutting fumes. Background Technology

[0002] Laser cutting equipment uses a high-energy-density laser beam to irradiate the workpiece, causing the irradiated material to rapidly melt, vaporize, ablate, or reach its ignition point. Simultaneously, a high-speed airflow coaxial with the laser beam blows away the molten material, thus cutting the workpiece. This process is characterized by high cutting precision, high speed, and non-contact processing. Purifying the fumes generated during laser cutting aims to remove harmful substances such as metal particles, non-metallic dust, and volatile organic compounds (VOCs) from the fumes, preventing direct emission into the air and causing environmental pollution and harm to the health of operators.

[0003] A search revealed that Chinese patent application number CN202121964841.6 discloses a plasma fume purification device for a laser cutting machine, including a fume hood, a fume pipe provided on the upper outer surface of the fume hood, a device base cabinet provided at one end of the fume pipe, a cabinet door provided on the front outer surface of the device base cabinet, and a switch provided on one side outer surface of the device base cabinet.

[0004] The above-mentioned technical solutions and traditional purification equipment still have shortcomings. For example, it is difficult to treat particulate matter and harmful gases at the same time using a single filtration method. Therefore, we need to propose a laser-cutting smoke and dust negative pressure adsorption purification device. Utility Model Content

[0005] The purpose of this invention is to provide a negative pressure adsorption purification device for laser cutting fume, which adopts a multi-stage filtration system, from initial filtration of large particles to interception of fine dust, and then to oxidation and decomposition of harmful gases and photolysis of residual pollutants, to achieve efficient purification of particulate matter and harmful gases throughout the entire process, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A negative pressure adsorption purification device for laser cutting fumes includes:

[0008] Base and purification mechanism;

[0009] The purification mechanism is mounted on a base, and the bottom of the base is equipped with wheels. The purification mechanism includes a fan for creating negative pressure and a purification module for purifying the fumes generated by laser cutting.

[0010] The fan is installed on one side of the base, and the purification module is installed on the other side of the base;

[0011] The purification module is mounted on the base via support legs. The purification module includes a front purification box, a middle purification box, and a rear purification box. The front purification box, the middle purification box, and the rear purification box are connected in sequence via pipes. A negative pressure pipe is provided on one side of the front purification box, and an adsorption hood is installed at the end of the negative pressure pipe. A pipe is provided between the rear purification box and the air inlet of the fan. The fan generates negative pressure so that the flue gas can pass through the adsorption hood and then pass through the front purification box, the middle purification box, and the rear purification box in sequence for purification.

[0012] Preferably, a support is provided at the connection port between the front purification box and the middle purification box, and a dust collection bag is fitted on the support. A dust collection hopper with a cleaning port is provided at the bottom of the front purification box. After the flue gas enters the purification box, the dust particles are intercepted by the dust collection bag and collected and treated uniformly through the dust collection hopper.

[0013] Preferably, two sets of card holders are symmetrically arranged inside the intermediate purification box. The card holders are in the shape of openings and fit against the inner wall of the intermediate purification box. A first purification mesh plate and a second purification mesh plate are respectively inserted into the slots of the two sets of card holders. The frames of the first purification mesh plate and the second purification mesh plate are sealed and inserted into the top of the intermediate purification box, and a handle is provided on the top of the frame for quick insertion and removal of the first purification mesh plate and the second purification mesh plate.

[0014] Preferably, the first purification mesh is a sintered metal mesh with a pore size of 5-10 μm, used to intercept ≥95% of 1-5 μm particles, and the second purification mesh is configured with a specific surface area ≥1200 m². 2 / g of honeycomb activated carbon mesh, with potassium permanganate catalyst loaded on the second purification mesh plate to fully contact the harmful gases and cause oxidation reaction, thereby improving purification efficiency.

[0015] Preferably, the rear purification chamber is equipped with a UV lamp to cause photolysis of harmful substances in the flue gas entering the rear purification chamber. The mounting bracket of the UV lamp is inserted into the outer wall of the rear purification chamber, and the mounting bracket is connected to a wire.

[0016] Preferably, the upper and lower inner walls of the rear purification chamber are provided with partitions at intervals, which divide the purification chamber into zigzag airflow channels. UV lamps are arranged corresponding to the airflow channels to extend the residence time of flue gas in the rear purification chamber and ensure the effect of photolysis reaction.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. A three-stage purification system is adopted: "pre-filtering with dust collection bags in the pre-purification chamber + synergistic purification with sintered metal mesh and honeycomb activated carbon mesh in the middle purification chamber + photolysis with UV lamps in the post-purification chamber". The dust collection bags first intercept large particles of smoke and dust; the sintered metal mesh filters out fine particles with an interception rate of ≥95%; the honeycomb activated carbon mesh loaded with potassium permanganate catalyst utilizes the adsorption properties of activated carbon to enrich harmful gases, while the strong oxidizing properties of potassium permanganate oxidize and decompose them; the UV lamps then perform photolysis on residual harmful substances, achieving comprehensive and efficient treatment of particulate matter and harmful gases, overcoming the limitations of single filtration methods.

[0019] 2. The first and second purification screens in the middle purification chamber adopt a card-type plug-in design with handles, which makes it easy to quickly insert and remove them, and facilitates users to clean or replace the filters regularly; the dust collection hopper at the bottom of the front purification chamber has a cleaning port, which can easily collect and process the intercepted dust particles. The overall structural design makes the equipment maintenance and operation simple, reduces maintenance time and labor costs, and extends the service life of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the pre-cleaning chamber of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the purification box in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the rear purification box of this utility model.

[0024] In the diagram: 1. Base; 2. Front purification box; 3. Middle purification box; 4. Rear purification box; 5. Fan; 6. Negative pressure pipe; 7. Adsorption hood; 8. Support; 9. Dust collector bag; 10. Card holder; 11. First purification screen; 12. Second purification screen; 13. UV lamp; 14. Partition; 15. Dust collection hopper. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A negative pressure adsorption purification device for laser cutting fumes includes:

[0028] The base 1 and the purification mechanism are mounted on the base 1, and the base 1 is equipped with wheels. The purification mechanism includes a fan 5 for creating negative pressure and a purification module for purifying the fumes generated by laser cutting.

[0029] The fan 5 is installed on one side of the base 1, and the purification module is set on the other side of the base 1. The purification module is set on the base 1 by the support legs. The purification module includes a front purification box 2, a middle purification box 3, and a rear purification box 4. The front purification box 2, the middle purification box 3, and the rear purification box 4 are connected in sequence by pipes. A negative pressure pipe 6 is set on one side of the front purification box 2, and an adsorption hood 7 is installed at the end of the negative pressure pipe 6. A pipe is set between the rear purification box 4 and the air inlet of the fan 5. The fan 5 generates negative pressure so that the flue gas can pass through the adsorption hood 7 and then pass through the front purification box 2, the middle purification box 3, and the rear purification box 4 in sequence for purification.

[0030] In use, the purification device with wheels is moved to a suitable position near the laser cutting equipment, so that the adsorption hood 7 can be close to the source of smoke and dust near the laser cutting head. The wheels at the bottom of the base 1 facilitate the flexible movement of the purification device in the work area, adapting to different laser cutting operation positions. The fan 5 in the purification mechanism is installed on one side of the base 1. After starting, it forms a negative pressure in the system by drawing air. The purification module consists of a front purification box 2, a middle purification box 3, and a rear purification box 4 connected in sequence by pipes. The adsorption hood 7 at the end of the negative pressure pipe 6 on one side of the front purification box 2 draws in the smoke generated by laser cutting under the action of negative pressure, so that the smoke flows through each purification box in sequence to complete the purification process. The rear purification box 4 is connected to the air inlet of the fan 5, and the purified gas is discharged through the fan 5.

[0031] Among them, the negative pressure tube 6 is a flexible tube with an outer metal shaped flexible tube, which can adjust the position and angle of the adsorption cover 7 according to actual needs.

[0032] Please see Figure 2 :

[0033] A support 8 is provided at the connection between the front purification box 2 and the middle purification box 3. A dust collection bag 9 is fitted onto the support 8. A dust collection hopper 15 with a cleaning port is provided at the bottom of the front purification box 2. After the flue gas enters the purification box, the dust particles are intercepted by the dust collection bag 9 and collected and uniformly treated by the dust collection hopper 15.

[0034] After the flue gas enters the pre-purification chamber 2, larger dust particles cannot pass through due to the pores in the dust collector bags 9 fitted onto the support 8 at the connection between the pre-purification chamber 2 and the middle purification chamber 3. These particles are trapped on the surface of the dust collector bags 9. Over time, these particles accumulate and eventually fall into the dust collection hopper 15 with a cleaning port at the bottom of the pre-purification chamber 2, completing the initial solid-gas separation. Its function is to remove most of the large dust particles from the flue gas, reducing the processing load on subsequent purification modules, minimizing clogging and wear on subsequent filters and other components caused by large particles, and improving overall purification efficiency and equipment lifespan.

[0035] Please see Figure 3 :

[0036] Two sets of mounting brackets 10 are symmetrically arranged inside the intermediate purification chamber 3. The mounting brackets 10 are shaped like openings and fit snugly against the inner wall of the intermediate purification chamber 3. A first purification mesh plate 11 and a second purification mesh plate 12 are respectively inserted into the slots of the two sets of mounting brackets 10. The edges of both the first and second purification mesh plates 11 and 12 are sealed and inserted into the top of the intermediate purification chamber 3, and handles are provided at the top of the edges for quick insertion and removal of the first and second purification mesh plates 11 and 12. The first purification mesh plate 11 is a sintered metal mesh with a pore size of 5-10 μm, used to intercept ≥95% of 1-5 μm particles. The second purification mesh plate 12 has a specific surface area ≥1200 m². 2 / g of honeycomb activated carbon mesh, and the second purification mesh plate 12 loaded with potassium permanganate catalyst, so as to fully contact with harmful gases and undergo oxidation reaction, thereby improving purification efficiency.

[0037] The flue gas, after preliminary filtration in the pre-purification chamber 2, enters the intermediate purification chamber 3. It first passes through the first purification mesh plate 11, whose sintered metal mesh structure with a pore size of 5-10 μm can intercept ≥95% of 1-5 μm particles, achieving further filtration of fine particulate matter. Subsequently, the flue gas contacts the second purification mesh plate 12, which has a specific surface area ≥1200 m². 2 The honeycomb activated carbon mesh, loaded with potassium permanganate catalyst, has a large specific surface area and abundant pores. The activated carbon adsorbs harmful gas molecules and enriches them on the surface of the mesh. The potassium permanganate catalyst, with its strong oxidizing properties, reacts with the harmful gases and decomposes them into harmless substances.

[0038] Furthermore, the first and second purification screens feature a 10-slot design with a handle, allowing users to quickly insert and remove them, facilitating regular cleaning or replacement of the filters. This section achieves deep purification of particulate matter and harmful gases, ensuring the cleanliness of the discharged gas, and is easy to maintain, guaranteeing the continuity of purification effects.

[0039] Please see Figure 4 :

[0040] A UV lamp 13 is installed inside the rear purification chamber 4 to cause photolysis of harmful substances in the flue gas entering the rear purification chamber 4. The mounting base of the UV lamp 13 is inserted into the outer wall of the rear purification chamber 4, and the mounting base is connected to the wires.

[0041] The upper and lower inner walls of the rear purification chamber 4 are equipped with partitions 14, which divide the airflow channels in the purification chamber into a zigzag pattern. The UV lamp tubes 13 are set in the corresponding airflow channels to extend the residence time of the flue gas in the rear purification chamber 4 and ensure the effect of the photolysis reaction.

[0042] After being treated in the intermediate purification chamber 3, the flue gas enters the final purification chamber 4. Baffles 14, spaced apart on the upper and lower inner walls of the chamber, divide the space into zigzag airflow channels, forcing the flue gas to circulate in a meandering manner, significantly extending its retention time. UV lamps 13, positioned corresponding to these airflow channels, emit ultraviolet light to irradiate residual harmful substances in the flue gas, causing their chemical bonds to break and undergoing a photolysis reaction, decomposing them into harmless small molecules. The UV lamps 13 are connected to mounting brackets inserted into the outer wall of the chamber, facilitating installation, disassembly, and maintenance. This part further removes residual harmful substances from the flue gas through a photolysis reaction, ensuring that the final exhaust gas meets environmental standards. Simultaneously, the unique airflow channel design enhances the photolysis reaction effect.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A negative pressure adsorption purification device for laser cutting fumes, characterized in that, include: Base (1) and purification mechanism; The purification mechanism is set on the base (1), and the bottom of the base (1) is equipped with a walking wheel. The purification mechanism includes a fan (5) for forming negative pressure and a purification module for purifying the fumes generated by laser cutting. The fan (5) is installed on one side of the base (1), and the purification module is installed on the other side of the base (1); The purification module is mounted on the base (1) via support legs. The purification module includes a front purification box (2), a middle purification box (3), and a rear purification box (4). The front purification box (2), the middle purification box (3), and the rear purification box (4) are connected in sequence by pipes. A negative pressure pipe (6) is provided on one side of the front purification box (2). An adsorption hood (7) is installed at the end of the negative pressure pipe (6). A pipe is provided between the rear purification box (4) and the air inlet of the fan (5). The fan (5) generates negative pressure so that the flue gas can pass through the adsorption hood (7) and then pass through the front purification box (2), the middle purification box (3), and the rear purification box (4) in sequence for purification.

2. The laser cutting fume negative pressure adsorption purification device according to claim 1, characterized in that: A support (8) is provided at the connection port between the front purification box (2) and the middle purification box (3). A dust collector bag (9) is fitted on the support (8). A dust collection hopper (15) with a cleaning port is provided at the bottom of the front purification box (2). After the flue gas enters the purification box, the dust particles are intercepted by the dust collector bag (9) and collected and uniformly processed by the dust collection hopper (15).

3. The laser cutting fume negative pressure adsorption purification device according to claim 1, characterized in that: The intermediate purification box (3) is symmetrically provided with two sets of card seats (10). The card seats (10) are in the shape of an opening and fit against the inner wall of the intermediate purification box (3). The slots of the two sets of card seats (10) are respectively inserted into the first purification screen (11) and the second purification screen (12). The frames of the first purification screen (11) and the second purification screen (12) are sealed and inserted into the top of the intermediate purification box (3). The top of the frame is provided with a handle for quick insertion and removal of the first purification screen (11) and the second purification screen (12).

4. The laser cutting fume negative pressure adsorption purification device according to claim 3, characterized in that: The first purification mesh (11) is a sintered metal mesh with a pore size of 5-10 μm, used to intercept ≥95% of 1-5 μm particles, and the second purification mesh (12) is set with a specific surface area ≥1200 m². 2 / g of honeycomb activated carbon mesh, the second purification mesh plate (12) is loaded with potassium permanganate catalyst to fully contact with harmful gases and undergo oxidation reaction, thereby improving purification efficiency.

5. The laser cutting fume negative pressure adsorption purification device according to claim 1, characterized in that: The rear purification box (4) is equipped with a UV lamp (13) to cause the harmful substances in the flue gas entering the rear purification box (4) to undergo photolysis reaction. The mounting base of the UV lamp (13) is inserted into the outer wall of the rear purification box (4), and the mounting base is connected to the wire.

6. The laser cutting fume negative pressure adsorption purification device according to claim 1, characterized in that: The upper and lower inner walls of the rear purification box (4) are provided with partitions (14) at intervals. The partitions (14) divide the purification box into zigzag airflow channels. UV lamps (13) are set in the corresponding airflow channels to extend the residence time of flue gas in the rear purification box (4) and ensure the effect of photolysis reaction.

Images