Dust separation device for waste gas containing metal dust
By designing a dust separation device using vertical scrapers and heating wires, the problems of inner wall adhesion and metal dust separation in wet dust removal methods were solved, achieving efficient separation of metal and non-metal dust and reducing resource waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGYAN HUIFENG IND & TRADE CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-28
AI Technical Summary
Existing wet dust collection methods result in dust adhering to the inner wall of a sealed tank after prolonged operation, affecting operation and failing to effectively separate metal dust, leading to resource waste.
A metal dust separation device was designed. It uses a vertical scraper to remove dust from the inner wall, combined with spraying, conveying cylinder and electric heating wire treatment, to achieve the separation of metal and non-metal by utilizing the difference in dust mass.
It effectively prevents dust from adhering to the inner wall, achieves the separation of metal dust and non-metal dust, reduces resource waste, and improves operating efficiency.
Smart Images
Figure CN224167199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dust separation devices, specifically a dust separation device for exhaust gas containing metal dust. Background Technology
[0002] Dust refers to solid particles suspended in the air. It is commonly known by many names, such as dust, grime, soot, mineral dust, sand, and powder, without clear boundaries. The International Organization for Standardization (ISO) defines dust as solid suspended particles with a diameter of less than 75 μm. The presence of dust in the atmosphere is one of the main reasons for maintaining the Earth's temperature; too much or too little dust in the atmosphere will have catastrophic effects on the environment. However, in daily life and work, industrial dust is a major threat to human health and a leading cause of many diseases.
[0003] Currently, the main method for separating dust from exhaust gas is wet scrubbing, which uses spray equipment to form a water curtain. When exhaust gas passes through the water curtain, the dust mixed in with it is carried away by the water. However, this method usually operates in a closed tank. Over time, a thick layer of dust tends to accumulate on the inner wall of the tank, affecting subsequent operations. Furthermore, this method cannot remove metal dust from ordinary dust, resulting in a waste of metal resources. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a dust separation device for exhaust gas containing metal dust. It solves the problem that wet dust removal methods generally operate in a sealed tank, and after a long time, a thick layer of dust easily adheres to the inner wall surface of the tank, affecting subsequent operations. Furthermore, this method cannot remove metal dust from ordinary dust, resulting in the waste of metal resources.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a dust separation device for exhaust gas containing metal dust, comprising a horizontally arranged base, a plurality of supporting columns vertically fixedly connected to one side of the upper surface of the base, a separation tank vertically fixedly connected to the top of the plurality of supporting columns, a plurality of spray heads vertically arranged at the top of the interior of the separation tank, and an air inlet pipe horizontally connected to the side surface of the separation tank.
[0006] A rotating rod is vertically rotatably connected to the top of the separator and located on its central axis. The top and bottom ends of the outer surface of the rotating rod are both horizontally fixedly connected to crossbars extending to their side surfaces. A vertical scraper is vertically fixedly connected between the outer ends of the two crossbars on the same side. The length of the vertical scraper is adapted to the height of the separator and its outer surface is in contact with the inner surface of the separator. A first motor is vertically fixedly connected to the middle of the top of the separator. The output shaft of the first motor rotatably passes through the top of the separator and is fixedly connected to the top of the rotating rod.
[0007] Furthermore, a feed cylinder with an open rear end is horizontally fixedly connected to the upper surface of the base and below the separation tank. The bottom end of the separation tank is connected to an inverted conical feed hopper, and the bottom end of the feed hopper is connected to the front part of the upper surface of the feed cylinder.
[0008] Furthermore, a horizontal rotating rod is rotatably connected to the inside of the feeding cylinder, and a spiral conveying blade with an outer diameter that matches the inner diameter of the feeding cylinder is fixedly connected to the outer surface of the horizontal rotating rod along its length. A second motor is horizontally fixedly connected to the front end of the feeding cylinder, and the output shaft of the second motor rotatably passes through the front end of the feeding cylinder and is fixedly connected to the front end of the horizontal rotating rod.
[0009] Furthermore, a plurality of evaporation holes are evenly spaced through the rear part of the upper surface of the feeding cylinder along its length direction, and an electric heating wire is fixedly connected to the upper surface of the base and wound around the outside of the feeding cylinder along its length direction.
[0010] Furthermore, a conveyor belt is laterally fixedly connected to the rear end of the upper surface of the base and located at the lower rear end of the conveying cylinder.
[0011] Furthermore, a plurality of support pads are fixedly connected to the bottom end of the base.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This dust separation device for exhaust gas containing metal dust, by setting up a vertical scraper, a conveying cylinder and a conveyor belt, allows the exhaust gas to enter the interior of the separation tank through the air inlet pipe during operation. Inside the separation tank, there is a vertical scraper that continuously moves against its inner wall, which can scrape off the dust adhering to the inner wall surface and prevent it from affecting the operation. The dust falls through the water curtain until it enters the conveying cylinder, and continues to move backward by the conveyor. During this process, it is heated by the heating wire to evaporate the moisture in it. The completely dried dust eventually falls onto the conveyor belt. When the dust falls from the end of the conveyor belt, since the mass of metal dust is generally greater than that of non-metal dust, the two are thrown at different distances, thus separating the metal and non-metal dust. Attached Figure Description
[0013] Figure 1This is a schematic cross-sectional view of the separation tank of this utility model;
[0014] Figure 2 This is a schematic diagram of the overall external structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the material conveying structure of this utility model.
[0016] In the diagram: 1-base, 2-support column, 3-separation tank, 4-spray head, 5-air inlet pipe, 6-first motor, 7-rotating rod, 8-cross bar, 9-vertical scraper, 10-feeding cylinder, 11-second motor, 12-horizontal rotating rod, 13-spiral conveyor blade, 14-evaporation hole, 15-heating wire, 16-conveyor belt, 17-support pad. Detailed Implementation
[0017] 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.
[0018] Please see Figure 1-3 This utility model provides a technical solution: a dust separation device for exhaust gas containing metal dust, including a horizontally arranged base 1, a plurality of support columns 2 vertically fixedly connected to one side of the upper surface of the base 1, a separation tank 3 vertically fixedly connected to the top of the plurality of support columns 2, a plurality of spray heads 4 vertically arranged at the top of the interior of the separation tank 3, and an air inlet pipe 5 horizontally connected to the side surface of the separation tank 3.
[0019] A rotating rod 7 is vertically rotatably connected to the top of the separator 3 and located on its central axis. The top and bottom ends of the outer surface of the rotating rod 7 are horizontally fixedly connected to crossbars 8 extending to its side surface. A vertical scraper 9 is vertically fixedly connected between the outer ends of the two crossbars 8 on the same side. The length of the vertical scraper 9 is adapted to the height of the separator 3 and its outer surface is attached to the inner surface of the separator 3. A first motor 6 is vertically fixedly connected to the middle of the top of the separator 3. The output shaft of the first motor 6 rotatably passes through the top of the separator 3 and is fixedly connected to the top of the rotating rod 7.
[0020] When the device is running, the exhaust gas enters the interior of the separator tank 3 through the intake pipe 5. Multiple spray heads 4 spray water curtains to adsorb the dust in the exhaust gas and separate it from the exhaust gas. Under the action of gravity, the water droplets carrying the dust will continue to move downward. During this process, the first motor 6 runs continuously. The rotation of its output shaft will drive the rotating rod 7 to rotate. During the rotation of the rotating rod 7, the horizontal bar 8 fixedly connected to its surface will drive the vertical scraper 9 to rotate continuously. The outer end of the vertical scraper 9 is attached to the inner surface of the separator tank 3, which can scrape off the dust attached to it and prevent it from affecting subsequent operations.
[0021] The other side surface of the separator 3 is connected to an exhaust pipe, and an exhaust pump is installed at the outer end of the exhaust pipe, which can extract the exhaust gas from the inside of the separator 3.
[0022] A feed cylinder 10 with an open rear end is horizontally fixedly connected to the upper surface of the base 1 and below the separation tank 3. The bottom end of the separation tank 3 is connected to an inverted conical feed hopper, and the bottom end of the feed hopper is connected to the front part of the upper surface of the feed cylinder 10.
[0023] The inside of the feeding cylinder 10 is rotatably connected to a horizontal rotating rod 12 coaxial with it. The outer surface of the horizontal rotating rod 12 is fixedly connected along its length to a spiral conveying blade 13 whose outer diameter matches the inner diameter of the feeding cylinder 10. The front end of the feeding cylinder 10 is fixedly connected to a second motor 11. The output shaft of the second motor 11 rotatably passes through the front end of the feeding cylinder 10 and is fixedly connected to the front end of the horizontal rotating rod 12.
[0024] The falling dust will enter the interior of the conveying cylinder 10 through the feeding hopper. The conveying cylinder 10 is equipped with a spiral conveying blade 13, which is driven to rotate continuously by the second motor 11. During its rotation, the dust adsorbed by water can be continuously conveyed to the rear of the structure.
[0025] Multiple evaporation holes 14 are evenly spaced along the length of the rear part of the upper surface of the feed cylinder 10, and an electric heating wire 15 is fixedly connected to the upper surface of the base 1 and wound around the outside of the feed cylinder 10 along the length of the base 10.
[0026] As the dust moves backward, the heating wire 15 continuously heats it, and the moisture evaporates during this process and is discharged through multiple evaporation holes 14. The dried dust is eventually discharged through the rear end of the conveying cylinder 10.
[0027] A conveyor belt 16 is horizontally fixedly connected to the rear end of the upper surface of the base 1 and to the lower rear end of the conveyor cylinder 10.
[0028] The dust discharged by the conveyor cylinder 10 will fall onto the conveyor belt 16. The conveyor belt 16 always maintains a certain speed. When the dust is thrown out from its end, since the mass of metal dust is generally higher than that of non-metal dust, the distance it is thrown out will be shorter, thus enabling the separation of metal dust and non-metal dust.
[0029] Multiple support pads 17 are fixedly connected to the bottom of the base 1.
[0030] The support pad 17 provides support and elevates the entire device, allowing the ejected dust particles to be separated further.
[0031] When the device is running, the exhaust gas enters the interior of the separator 3 through the intake pipe 5. Inside the separator 3, there is a vertical scraper 9 that moves continuously against its inner wall, which can scrape off the dust adhering to the inner wall surface to prevent it from affecting the operation. The dust falls through the water curtain until it enters the conveyor cylinder 10, and continues to move backward through the conveyor cylinder 10. During this process, it is heated by the heating wire 15 to evaporate the moisture in it. The completely dry dust will eventually fall onto the conveyor belt 16. When the dust falls from the end of the conveyor belt 16, since the mass of metal dust is generally greater than that of non-metal dust, the distance they are thrown will be different, thus separating the metal and non-metal dust.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dust separation device for exhaust gas containing metal dust, characterized in that: It includes a horizontally arranged base (1), a plurality of support columns (2) are vertically fixedly connected to one side of the upper surface of the base (1), a separation tank (3) is vertically fixedly connected to the top of the plurality of support columns (2), a plurality of spray heads (4) are vertically arranged at the top inside the separation tank (3), and an air inlet pipe (5) is horizontally connected to the side surface of the separation tank (3). A rotating rod (7) is vertically rotatably connected to the top of the separator (3) and located on its central axis. A horizontal bar (8) extending to its side surface is horizontally fixedly connected to the top and bottom of the outer surface of the rotating rod (7). A vertical scraper (9) is vertically fixedly connected between the outer ends of the two horizontal bars (8) on the same side. The length of the vertical scraper (9) is adapted to the height of the separator (3) and its outer surface is attached to the inner surface of the separator (3). A first motor (6) is vertically fixedly connected to the middle of the top of the separator (3). The output shaft of the first motor (6) rotatably passes through the top of the separator (3) and is fixedly connected to the top of the rotating rod (7).
2. The dust separation device for exhaust gas containing metal dust according to claim 1, characterized in that: A feed cylinder (10) with an open rear end is horizontally fixedly connected to the upper surface of the base (1) and below the separation tank (3). The bottom end of the separation tank (3) is connected to an inverted conical feed hopper, and the bottom end of the feed hopper is connected to the front part of the upper surface of the feed cylinder (10).
3. The dust separation device for exhaust gas containing metal dust according to claim 2, characterized in that: The feed cylinder (10) is laterally rotatably connected to a horizontal rotating rod (12) coaxial with it. The outer surface of the horizontal rotating rod (12) is fixedly connected along its length direction to a spiral conveying blade (13) whose outer diameter is adapted to the inner diameter of the feed cylinder (10). The front end of the feed cylinder (10) is laterally fixedly connected to a second motor (11). The output shaft of the second motor (11) rotatably passes through the front end of the feed cylinder (10) and is fixedly connected to the front end of the horizontal rotating rod (12).
4. The dust separation device for exhaust gas containing metal dust according to claim 2, characterized in that: The rear part of the upper surface of the feed cylinder (10) is provided with a plurality of evaporation holes (14) evenly spaced along its length direction, and the upper surface of the base (1) is fixedly connected with an electric heating wire (15) that is wound around the outside of the feed cylinder (10) along its length direction.
5. A dust separation device for exhaust gas containing metal dust according to claim 2, characterized in that: A conveyor belt (16) is horizontally fixedly connected to the rear end of the upper surface of the base (1) and the lower part of the rear end of the conveying cylinder (10).
6. The dust separation device for exhaust gas containing metal dust according to claim 1, characterized in that: The bottom end of the base (1) is fixedly connected to a plurality of support pads (17).