A dust separation tower for smelting

Abstract

This utility model relates to a dust removal and separation tower for smelting, including a tower body, a spray assembly installed inside the tower body, a water pump installed on the outside of the tower body, and the outlet end of the water pump connected to the spray assembly through a feeding pipe. It also includes a scraping structure, comprising a support fixed in the tower body, a central column rotatably connected to the bottom of the support, scraper strips connected to the outside of the central column via an extension, and a magnetic rotor fixed to the outside of the central column; and a drive structure. This dust removal and separation tower for smelting effectively prevents the accumulation and scaling of salt crystals at the bottom conical section of the tower through continuous rotation and scraping by the scraping structure, avoiding blockage of the drain outlet. Furthermore, it employs a magnetic coupling drive method, with the drive component located outside the tower and the scraping component inside, eliminating the need for mechanical seals and preventing leakage.

Description

Technical Field

[0001] This utility model relates to the field of dust removal tower technology, specifically a dust removal and separation tower for smelting. Background Technology

[0002] One of the processes in metal mineral processing is smelting. However, smelting generates a large amount of waste gas, which needs to be filtered before it can be released into the atmosphere. The waste gas is usually filtered through a dust removal tower. Specifically, dust removal water is sprayed inside the dust removal tower, and the dust removal water adsorbs and neutralizes the dust and other impurities in the waste gas, thereby achieving the filtration of the waste gas.

[0003] During metal smelting, a large amount of waste gas containing harmful components such as dust, sulfur dioxide, nitrogen oxides (NOx), and hydrogen chloride (HCl) is generated. This waste gas is usually purified by a dust removal tower. A common method is to spray alkaline solutions or other spray liquids into the tower to remove pollutants from the waste gas through adsorption and neutralization reactions. However, after the spray liquid reacts with the acidic gases in the waste gas, it generates salts such as calcium sulfate, calcium sulfite, and sodium chloride. These substances mainly adhere to the inner wall of the bottom of the tower, forming a hard scale layer. After long-term operation, the scale buildup can cause equipment blockage and affect the operation of the dust removal tower. Therefore, a dust removal and separation tower for smelting is proposed. Utility Model Content

[0004] Based on the above description, this utility model provides a dust removal and separation tower for smelting, which solves the technical problems pointed out in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A dust removal and separation tower for smelting includes a tower body, a spray assembly installed in the tower body, a water pump installed on the outside of the tower body, and the outlet end of the water pump connected to the spray assembly through a feeding pipe, and further includes: The scraping structure includes a support fixed in the tower body, a central column rotatably connected to the bottom of the support, a scraper connected to the outside of the central column through an extension, and a magnetic rotor fixed to the outside of the central column. The drive structure includes an outer frame fixed to the outside of the tower body, a bearing seat on the outer frame, a ring sleeve rotatably connected to the bearing seat, a plurality of meshing teeth on the outer side of the ring sleeve, a drive component on the outer side of the outer frame, the drive component being used to drive the ring sleeve to rotate through the meshing teeth, a magnet block fixed on the ring sleeve, the magnet block being magnetically connected to the magnet rotor.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the driving component includes a motor, which is fixed to the bottom of the outer frame by bolts. A drive shaft is provided at the output end of the motor, extending through the upper surface of the outer frame. A gear is fixed to the outside of the drive shaft, and the gear meshes with a ring sleeve through meshing teeth.

[0008] Furthermore, the outer frame is provided with perforations, the diameter of which is equal to the diameter of the tower body, so that the outer frame can be fixed to the outside of the tower body.

[0009] Furthermore, the drive structure also includes a protective cover, the bottom of which has a cavity to accommodate the magnet block, gears and meshing teeth. The protective cover is fixed to the outer frame by bolts.

[0010] Furthermore, the spray assembly includes a spray frame fixed in the tower body, a spray head is provided at the bottom of the spray frame, the spray frame is connected to the outlet of the water pump through a feed pipe, and the inlet of the water pump is connected to an external water tank.

[0011] Furthermore, the tower body is also equipped with filter screens, and there are two sets of filter screens and two sets of spray racks. The filter screens are located below the corresponding spray racks, so that the spray liquid can spray the filter screens.

[0012] Furthermore, the tower body has an austenitic stainless steel wall, a wall thickness of three millimeters, a height of three meters, a diameter of one meter, and support legs and a drain outlet at the bottom.

[0013] Furthermore, the outer side of the magnet rotor is a magnetic pole, with the magnetic pole being the N pole, and the side of the magnet block closest to the magnet rotor being the S pole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: This dust removal and separation tower for smelting uses a scraping structure to continuously scrape away salt crystals at the bottom of the inverted cone, effectively preventing the accumulation and scaling of salt crystals and avoiding blockage of the drain outlet. In addition, it adopts a magnetic coupling transmission method, with the drive component located outside the tower and the scraping component located inside the tower, eliminating the need for mechanical seals and preventing leakage. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a dust removal and separation tower for smelting provided in this embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the structure in a partial cross-section; Figure 3 This is a schematic diagram of the connection structure of the spray assembly in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the scraping structure and the driving structure in the embodiments of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Tower body; 2. Spray assembly; 21. Spray frame; 22. Spray head; 3. Water pump; 4. Filter screen; 5. Scraper structure; 51. Support; 52. Central column; 53. Extension; 54. Scraper bar; 55. Magnetic rotor; 6. Drive structure; 61. Outer frame; 62. Shaft seat; 63. Ring sleeve; 64. Motor; 65. Gear; 66. Magnetic block; 67. Protective cover. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] like Figure 1-4 As shown, a dust removal and separation tower for smelting in this embodiment includes a tower body 1, a spray assembly 2 in the tower body 1, a water pump 3 on the outside of the tower body 1, and the outlet end of the water pump 3 is connected to the spray assembly 2 through a feeding pipe. The top of the tower body 1 is a gas outlet, and the side of the tower body 1 is provided with a gas inlet and an observation window located above the gas inlet.

[0019] Thus, when the exhaust gas enters through the gas inlet, the dust and gaseous pollutants in the exhaust gas can be separated by spraying. However, since the exhaust gas contains gaseous pollutants such as sulfur dioxide, NOx, and HCl, the spraying liquid, for example, is an alkaline solution, which reacts with the gaseous pollutants and subsequently generates substances such as calcium sulfate, calcium sulfite, and sodium chloride. These substances form a hard scale layer, which will cause blockage.

[0020] Based on the above, in order to minimize scaling and blockage, the dust removal tower is designed in an improved manner. Specifically, firstly, the bottom of the tower body 1 is provided with an inverted cone section, which facilitates sewage discharge. Furthermore, in this embodiment, a dust removal and separation tower for smelting also includes a scraping structure 5 disposed in the tower body 1 and a driving structure 6 disposed outside the tower body 1. The scraping structure 5 is driven by the driving structure 6.

[0021] Further explanation: The scraping structure 5 includes a support 51 fixed in the tower body 1. A central column 52 is rotatably connected to the bottom of the support 51 via a bearing. An extension 53 extending toward the inner wall of the tower body 1 is fixed to the outside of the central column 52. A scraper 54 is fixed to the side of the extension 53 away from the central column 52. In addition, a magnetic rotor 55 is fixed to the outside of the central column 52. The magnetic rotor 55 is driven by the drive structure 6. When the magnetic rotor 55 rotates, it can drive the central column 52 and the scraper 54 to rotate. In this way, the scraper 54 can clean the inverted cone at the bottom of the tower body 1, preventing substances such as calcium sulfate, calcium sulfite, and sodium chloride from adhering and forming scale on the inner wall of the inverted cone. This avoids the continuous accumulation of substances such as calcium sulfate, calcium sulfite, and sodium chloride. Thus, each time sewage is discharged from the drain port, these substances can be discharged as much as possible, avoiding subsequent blockages caused by continuous scaling and adhesion to the inner wall of the tower body 1.

[0022] It should be noted that the scraper blade 54, for example, is made of polytetrafluoroethylene, which has excellent corrosion resistance and can withstand the corrosion of various acid, alkali and salt solutions. It is fully adaptable to the spray liquid environment and has an extremely low coefficient of friction, resulting in good scraping effect and preventing the adhesion of scale.

[0023] The drive structure 6 includes an outer frame 61 fixed to the outside of the tower body 1. The outer frame 61 has a through hole with a diameter equal to that of the tower body 1, so that the outer frame 61 can be fixed to the outside of the tower body 1. A bearing seat 62 is provided on the outer frame 61, and a ring sleeve 63 is rotatably connected to the bearing seat 62 via a bearing. Multiple meshing teeth arranged in a circumferential array are provided on the outer side of the ring sleeve 63. A motor 64 is fixed to the bottom of the outer frame 61 by bolts. A drive shaft is provided at the output end of the motor 64, which extends through the upper surface of the outer frame 61. A gear 65 is fixed to the outer side of the drive shaft. The gear 65 meshes with the ring sleeve 63 through meshing teeth. In addition, a magnet block 66 is fixed on the ring sleeve 63.

[0024] It should be noted that the magnet block 66 is magnetically connected to the magnet rotor 55. The outer side of the magnet rotor 55 is the magnetic pole, for example, the N pole. In this case, the side of the magnet block 66 closest to the magnet rotor 55 is the S pole. It can be understood that the magnetic pole pairing method can also be reversed, as long as magnetic coupling is satisfied. That is, when the motor 64 drives the gear 65 to rotate the ring sleeve 63, the magnet block 66 drives the magnet rotor 55 to move in a circular motion. In this way, the scraper 54 completes the cleaning work. In addition, the distance between the magnet block 66 and the magnet rotor 55 is preferably four millimeters.

[0025] It should also be noted that, in order to ensure the smooth completion of magnetic force transmission, the tower wall of the tower body 1 is made of non-magnetic material, preferably austenitic stainless steel. Furthermore, the dust removal and separation tower for smelting is designed on a small dust removal tower with a height not exceeding three meters. For example, the tower height is three meters, the diameter is one meter, and the wall thickness is three millimeters. Such a choice of wall thickness will not be too large, thus avoiding the situation where the wall thickness makes magnetic coupling transmission difficult.

[0026] In addition, to protect the magnet 66, gear 65 and meshing teeth, the drive structure 6 also includes a protective cover 67. The bottom of the protective cover 67 is provided with a cavity to accommodate the magnet 66, gear 65 and meshing teeth. The protective cover 67 is fixed to the outer frame 61 by bolts, thereby protecting the magnet 66, gear 65 and meshing teeth.

[0027] The spray assembly 2 is described as follows: the spray assembly 2 includes a spray frame 21 fixed in the tower body 1, and a spray head 22 is provided at the bottom of the spray frame 21. The spray frame 21 is connected to the outlet of the water pump 3 through a feed pipe, and the inlet of the water pump 3 is connected to an external water tank. The water tank is used to hold the spray liquid. The water tank is not shown in the figure. In this way, the spraying work can be completed when the water pump 3 is running.

[0028] In addition, a filter plate 4 is installed in the tower body 1 to block large particulate matter carried in the exhaust gas. The number of filter plates 4 is the same as the number of spray racks 21. For example, there are two sets of filter plates 4 and two sets of spray racks 21. The bottom of the filter plate 4 is fixed with a support foot, which is welded to the inner wall of the tower body 1. The filter plate 4 is located below the spray rack 21 so that the spray liquid can spray the filter plate 4.

[0029] It should be noted that support legs are welded to the bottom of tower body 1. For example, there are four sets of support legs arranged in a circular array. A drain outlet is provided at the bottom of tower body 1. A pipe with a valve body can be installed at the bottom of the drain outlet. The valve body can be a manually operated shut-off valve or an electrically operated solenoid valve. It should be noted that the support legs of tower body 1 provide sufficient space between the drain outlet and the ground, thus providing installation space for the pipe. The liquid after discharge will be purified by downstream purification equipment. The downstream purification equipment is not related to this solution and will not be described in detail here.

[0030] The above explains the working principle of the dust removal and separation tower used in smelting: Dust removal and reaction: During the upward flow of exhaust gas, it comes into countercurrent contact with the downward sprayed alkaline solution, where dust is adsorbed, acidic gases are neutralized, and salt crystals are formed. Magnetic transmission: Motor 64 drives gear 65, which in turn drives ring 63 to rotate. The magnet block 66 on ring 63 attracts the magnet rotor 55 inside the tower through magnetic force, realizing contactless transmission. Scaling removal: The magnetic rotor 55 drives the central column 52 and the scraper 54 to rotate. The scraper 54 is in close contact with the inner wall of the inverted cone at the bottom of the tower, scraping off the crystals attached thereto, which are then discharged with the waste liquid.

[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A dust removal and separation tower for smelting, comprising a tower body (1), a spray assembly (2) disposed in the tower body (1), a water pump (3) disposed on the outside of the tower body (1), the outlet end of the water pump (3) being connected to the spray assembly (2) via a feeding pipe, characterized in that, Also includes: The scraping structure (5) includes a support (51) fixed in the tower body (1), a central column (52) rotatably connected to the bottom of the support (51), a scraper (54) connected to the outside of the central column (52) through an extension (53), and a magnetic rotor (55) fixed to the outside of the central column (52). The drive structure (6) includes an outer frame (61) fixed to the outside of the tower body (1), a bearing seat (62) is provided on the outer frame (61), a ring sleeve (63) is rotatably connected to the bearing seat (62), a plurality of meshing teeth are provided on the outside of the ring sleeve (63), a drive component is provided on the outside of the outer frame (61), the drive component is used to drive the ring sleeve (63) to rotate through the meshing teeth, a magnet block (66) is fixed on the ring sleeve (63), and the magnet block (66) is magnetically connected to the magnet rotor (55).

2. The dust removal and separation tower for smelting according to claim 1, characterized in that: The drive component includes a motor (64), which is fixed to the bottom of the outer frame (61) by bolts. A drive shaft is provided at the output end of the motor (64) and extends through the upper surface of the outer frame (61). A gear (65) is fixed on the outside of the drive shaft and meshes with the ring sleeve (63) through meshing teeth.

3. A dust removal and separation tower for smelting according to claim 2, characterized in that: The outer frame (61) has perforations with a diameter equal to that of the tower body (1), allowing the outer frame (61) to be fixed to the outside of the tower body (1).

4. A dust removal and separation tower for smelting according to claim 3, characterized in that: The drive structure (6) also includes a protective cover (67), the bottom of which is provided with a cavity to accommodate the magnet block (66), gear (65) and meshing teeth. The protective cover (67) is fixed to the outer frame (61) by bolts.

5. A dust removal and separation tower for smelting according to any one of claims 1-4, characterized in that: The spray assembly (2) includes a spray frame (21) fixed in the tower body (1), a spray head (22) is provided at the bottom of the spray frame (21), the spray frame (21) is connected to the outlet of the water pump (3) through the feed pipe, and the inlet end of the water pump (3) is connected to the external water tank.

6. A dust removal and separation tower for smelting according to claim 5, characterized in that: The tower body (1) is also provided with a filter plate (4). The number of filter plates (4) and the number of spray racks (21) are both two sets. The filter plate (4) is located below the corresponding spray rack (21) so that the spray liquid can spray the filter plate (4).

7. A dust removal and separation tower for smelting according to claim 1, characterized in that: The tower body (1) has an austenitic stainless steel wall, a wall thickness of three millimeters, a tower height of three meters, a diameter of one meter, and a support leg and a drain outlet at the bottom of the tower body (1).

8. A dust removal and separation tower for smelting according to claim 1, characterized in that: The outer side of the magnet rotor (55) is the magnetic pole, which is the N pole, while the side of the magnet block (66) closest to the magnet rotor (55) is the S pole.

Images