Steel-making dust removal device

Abstract

A steelmaking dust removal device comprises a dust removal tank, a filtering part is arranged in the dust removal tank, a first channel is communicated with the side wall of the dust removal tank and located below the filtering part, a second channel is communicated with the top face of the dust removal tank, a suction machine communicated with the second channel is arranged at the top end of the dust removal tank, and a dust exhaust device is communicated with the lower portion of the dust removal tank. A dust scraping assembly for cleaning the inner wall of the dust removal tank is arranged on the dust removal tank and comprises a connecting shaft rotationally arranged at the top of the dust removal tank, the connecting shaft penetrates through the dust removal tank and the partition plate, a supporting plate is arranged at the bottom end of the connecting shaft, connecting rods are arranged at the two ends of the supporting plate, spiral shovels are arranged on the connecting rods, and the spiral shovels are matched with the inner wall of the dust removal tank. A second motor is arranged on the dust removal tank and connected with the connecting shaft. By arranging the dust scraping assembly, smoke dust impurities attached to the inner wall of the dust removal tank can be cleaned and scraped, the procedure of manually cleaning the inner wall of the dust removal tank is omitted, time and labor are saved, and the practicability of the steelmaking dust removal device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of steelmaking, especially relates to a steelmaking dust removal device. BACKGROUND

[0002] In the steelmaking process, a large amount of dust, smoke dust and other particulate matter will be produced. These particulate matters mainly come from the use of combustion equipment, high-temperature smelting equipment and other tools, as well as the operation of hot metal blowing, iron mixing and other processes. These particulate matters not only pollute the production environment, but also threaten the health of production workers. In order to prevent air pollution caused by smoke and dust, dust removal devices are needed to treat them before discharging into the air. The current dust removal device discharges the smoke into the dust removal tank through the pipeline, then filters the smoke through the filter screen, and the filtered particles are discharged through the bottom of the dust removal tank. After long-term use of the dust removal tank, impurities will adhere to the inner wall of the dust removal tank, and manual cleaning is required when cleaning the inner wall of the dust removal tank, which increases the labor intensity and is time-consuming and laborious. SUMMARY

[0003] The utility model aims at providing a kind of steelmaking dust removal device to solve the technical problems raised in the above background.

[0004] To achieve the above purpose, the specific technical scheme of the steelmaking dust removal device of the utility model is as follows:

[0005] A kind of steelmaking dust removal device, including dust removal tank, support for supporting dust removal tank, filter part is equipped in dust removal tank, and first channel is communicated with in the filter part below dust removal tank side wall, and second channel is communicated with in dust removal tank top surface, suction machine is equipped in dust removal tank top end and communicated with second channel, dust removal device is communicated with in dust removal tank below. Filter part includes the baffle in dust removal tank, and filter screen is distributed on the baffle. Dust removal device is equipped on dust removal tank and is cleaned to its inner wall, and dust removal device includes the connecting shaft rotationally arranged on the top of dust removal tank, the connecting shaft penetrates dust removal tank and baffle, support plate is equipped in the bottom end of connecting shaft, and connecting rod is equipped at both ends of support plate, spiral shovel is equipped on connecting rod, and spiral shovel is matched with dust removal tank inner wall, second motor is equipped on dust removal tank, and second motor is connected with connecting shaft.

[0006] Further, the top end of the connecting rod is connected by a connecting ring, and the connecting ring is located in the dust removal tank and matched with the inner wall thereof.

[0007] Further, the discharge device includes a dust collection bin communicated with the bottom end of the dust removal tank, a planetary discharge valve communicated with the bottom end of the dust collection bin, and a first motor arranged on the planetary discharge valve, the first motor being connected with the planetary discharge valve.

[0008] Further, the dust removal tank is provided with a pulse device for cleaning the filter screen, and the pulse device comprises a gas tank arranged on the side wall of the dust removal tank, a gas injection pipe arranged on the dust removal device, a plurality of nozzles corresponding to the filter screen communicated with the gas injection pipe, and a pulse valve arranged on the outer side end of the gas injection pipe.

[0009] Further, the bottom surface of the partition plate is distributed with protective cylinders, and the protective cylinders are arranged corresponding to the filter screens, and the filter screens are arranged in the corresponding protective cylinders, and gaps are left between the filter screens and the protective cylinders.

[0010] Further, the top end of the protective cylinder is provided with a first gear, the protective cylinder and the partition plate are rotationally arranged, the filter screens on the partition plate are arranged in a rectangular shape around the center of the partition plate, the first gears on the protective cylinders are sequentially engaged, a second gear is rotationally arranged at the center position of the bottom surface of the partition plate, and the second gear is engaged with the corresponding first gear.

[0011] The steelmaking dust removal device has the following advantages:

[0012] 1. The dust removal tank inner wall adhering dust impurities can be cleaned and scraped by the dust scraping assembly, the manual cleaning process of the dust removal tank inner wall is saved, time and labor are saved, and the practicability of the steelmaking dust removal device is improved.

[0013] 2. The protective cylinder is arranged, so that when the pulse device cleans the dust impurities on the filter screen, the dust impurities are prevented from being adsorbed on the adjacent filter screen again, the cleaning degree of the filter screen is improved, and the filter screen can better continuously filter the dust impurities. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the steelmaking dust removal device of the utility model;

[0015] Fig. 2 It is a dust scraping assembly schematic view of the utility model;

[0016] Fig. 3 It is a partition plate, filter screen, first gear and second gear schematic view of the utility model.

[0017] MARK DESCRIPTION IN THE DRAWINGS:

[0018] 1, dust tank; 2, first channel; 3, filter part; 31, partition; 32, filter screen; 4, second channel; 5, dust collection bin; 6, planetary discharge valve; 7, first motor; 8, support; 81, support ring; 82, support leg; 9, dust scraping assembly; 91, connecting shaft; 92, support plate; 93, connecting rod; 94, spiral shovel; 95, second motor; 10, connecting ring; 11, gas tank; 111, pulse valve; 12, air injection pipe; 13, spray head; 14, suction machine; 15, protective cylinder; 16, first gear; 17, second gear; 18, scraper. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the utility model, the utility model of a steelmaking dust removal device is described in further detail below in combination with the drawings.

[0020] As Figs. 1 to 3 shown, the utility model of a steelmaking dust removal device, including dust tank 1, dust tank 1 is provided with the support for its support 8, support 8 is composed of the support ring 81 that is set on the dust tank 1 outside and the support leg 82 that is distributed on the bottom surface of the support ring 81. The first channel 2 is communicated in the sidewall of the dust tank 1 below the filter part 3, and the second channel 4 is communicated in the top surface of the dust tank 1, and the filter part 3 is arranged in the inside of the dust tank 1. The smoke dust impurities enter the dust tank 1 through the first channel 2, then filter the smoke dust through the filter screen 32, and the filtered smoke dust is discharged through the second channel 4, so as to reduce the pollution of smoke dust to the air during steelmaking, and protect the health of artificial. In order to facilitate the filtration efficiency of smoke dust, the suction machine 14 is arranged at the top end of the dust tank 1 and communicated with the second channel 4, and the suction machine 14 is connected with the external power supply. It should be noted that the dust removal device is also communicated below the dust tank 1, and the particles filtered by the filter part 3 can be directly discharged through the dust removal device, reducing the accumulation of impurities in the dust tank 1.

[0021] As preferred, the dust removal tank 1 is provided with a dust scraping assembly 9 for cleaning the inner wall thereof, and the dust scraping assembly 9 comprises a connecting shaft 91 rotatably arranged at the top of the dust removal tank 1, the connecting shaft 91 penetrating the top of the dust removal tank 1 and the partition plate 31 and extending downward. A support plate 92 is arranged at the bottom end of the connecting shaft 91, the support plate 92 is arranged perpendicularly to the connecting shaft 91, and both ends of the support plate 92 are provided with connecting rods 93 arranged in parallel to the connecting shaft 91. A spiral scraper 94 is arranged on the connecting rod 93, and the spiral scraper 94 is matched with the inner wall of the dust removal tank 1. Of course, in order to realize the rotation of the connecting shaft 91, a second motor 95 connected to an external power source is arranged on the dust removal tank 1, and the second motor 95 is connected to the connecting shaft 91. When the second motor 95 drives the connecting shaft 91 to rotate, the support plate 92 at the bottom end of the connecting shaft 91 also drives the connecting rod 93 to rotate around the axis of the connecting shaft 91, and the spiral scraper 94 arranged on the connecting rod 93 also rotates and scrapes off the impurities and particles adhered to the inner wall of the dust removal tank 1 during the rotation, and at the same time, the spiral scraper 94 also pushes the scraped impurities and particles downward, thereby facilitating the discharge of the impurities and particles.

[0022] The top end of the connecting rod 93 is also connected through a connecting ring 10, and the connecting ring 10 is located in the dust removal tank 1 and matched with the inner wall thereof. The arrangement of the connecting ring 10 can increase the stability of the spiral scraper 94 on the connecting rod 93, improve the service life of the spiral scraper 94, and reduce the maintenance frequency of the spiral scraper 94. The discharge device for discharging the impurities and particles comprises a dust collecting bin 5 communicated with the bottom end of the dust removal tank 1, the bottom end of the dust collecting bin 5 is communicated with a planetary discharge valve 6, a first motor 7 connected to an external power source is arranged on one side of the planetary discharge valve 6, and the first motor 7 is connected to the planetary discharge valve 6. The first motor 7 drives the planetary discharge valve 6 to work, so that the impurities and particles accumulated in the dust collecting bin 5 can be continuously and intermittently discharged.

[0023] As preferred, the dust removal tank 1 is provided with a dust scraping assembly 9 for cleaning the inner wall thereof, and the dust scraping assembly 9 comprises a connecting shaft 91 rotatably arranged at the top of the dust removal tank 1, the connecting shaft 91 penetrating the top of the dust removal tank 1 and the partition plate 31 and extending downward. A support plate 92 is arranged at the bottom end of the connecting shaft 91, the support plate 92 is arranged perpendicularly to the connecting shaft 91, and both ends of the support plate 92 are provided with connecting rods 93 arranged in parallel to the connecting shaft 91. A spiral scraper 94 is arranged on the connecting rod 93, and the spiral scraper 94 is matched with the inner wall of the dust removal tank 1. Of course, in order to realize the rotation of the connecting shaft 91, a second motor 95 connected to an external power source is arranged on the dust removal tank 1, and the second motor 95 is connected to the connecting shaft 91. When the second motor 95 drives the connecting shaft 91 to rotate, the support plate 92 at the bottom end of the connecting shaft 91 also drives the connecting rod 93 to rotate around the axis of the connecting shaft 91, and the spiral scraper 94 arranged on the connecting rod 93 also rotates and scrapes off the impurities and particles adhered to the inner wall of the dust removal tank 1 during the rotation, and at the same time, the spiral scraper 94 also pushes the scraped impurities and particles downward, thereby facilitating the discharge of the impurities and particles. Fig. 2As shown, the filter part 3 comprises a partition 31 arranged in the dust removal tank 1 and filter screens 32 distributed on the partition 31. The partition 31 divides the dust removal tank 1 into two cavities, and the filter screens 32 are arranged in the lower cavity of the dust removal tank 1. The filtered smoke enters the upper cavity and is discharged through the second channel 4 and the suction machine 14. The filtered smoke dust particles are blocked in the lower cavity of the dust removal tank 1 and are discharged through the dust removal device. The filter screens 32 are preferably filter bags, and a support frame (not shown in the figure) is arranged on the partition 31 in the filter screens 32 to support the filter screens 32. A pulse device is arranged on the dust removal tank 1 to clean the filter screens 32. The pulse device can clean the impurities and particles attached to the surface of the filter screens 32, so that the filter screens 32 can continuously and efficiently filter the smoke dust. Specifically, the pulse device comprises a gas tank 11 arranged on the side wall of the dust removal tank 1, a gas jet pipe 12 arranged on the dust removal device, a nozzle 13 corresponding to the filter screens 32 communicated with the gas jet pipe 12, and a pulse valve 111 arranged on the outer side of the gas jet pipe 12. The pulse valve 111 controls the high-pressure gas in the gas tank 11 to be delivered to the gas jet pipe 12 and sprayed towards the filter screens 32 through the nozzle 13, so that the impurities and particles on the surface of the filter screens 32 fall off. The pulse device is a prior art and will not be described in detail here.

[0024] In order to prevent the impurities on the surface of the filter screens 32 from re-adsorbing on the adjacent filter screens 32 when they fall off, protective cylinders 15 are arranged on the bottom surface of the partition 31 and correspond to the filter screens 32. The filter screens 32 are arranged in the corresponding protective cylinders 15 and leave a gap between the filter screens 32 and the protective cylinders 15. When the filter screens 32 filter the smoke dust, the smoke dust enters the gap between the filter screens 32 and the protective cylinders 15, and then the filter screens 32 filter the smoke dust in the gap. When the pulse device cleans the filter screens 32, the impurities and particles on the surface of the filter screens 32 fall into the protective cylinders 15 and then fall down along the protective cylinders 15, preventing the impurities and particles on the adjacent filter screens 32 from re-adsorbing on other filter screens 32 when they fall off.

[0025] As shown in the figure, the filter part 3 comprises a partition 31 arranged in the dust removal tank 1 and filter screens 32 distributed on the partition 31. The partition 31 divides the dust removal tank 1 into two cavities, and the filter screens 32 are arranged in the lower cavity of the dust removal tank 1. The filtered smoke enters the upper cavity and is discharged through the second channel 4 and the suction machine 14. The filtered smoke dust particles are blocked in the lower cavity of the dust removal tank 1 and are discharged through the dust removal device. The filter screens 32 are preferably filter bags, and a support frame (not shown in the figure) is arranged on the partition 31 in the filter screens 32 to support the filter screens 32. A pulse device is arranged on the dust removal tank 1 to clean the filter screens 32. The pulse device can clean the impurities and particles attached to the surface of the filter screens 32, so that the filter screens 32 can continuously and efficiently filter the smoke dust. Specifically, the pulse device comprises a gas tank 11 arranged on the side wall of the dust removal tank 1, a gas jet pipe 12 arranged on the dust removal device, a nozzle 13 corresponding to the filter screens 32 communicated with the gas jet pipe 12, and a pulse valve 111 arranged on the outer side of the gas jet pipe 12. The pulse valve 111 controls the high-pressure gas in the gas tank 11 to be delivered to the gas jet pipe 12 and sprayed towards the filter screens 32 through the nozzle 13, so that the impurities and particles on the surface of the filter screens 32 fall off. The pulse device is a prior art and will not be described in detail here. Fig. 3As shown, in order to clean the inner wall of the protective cylinder 15, a first gear 16 is arranged at the top end of the protective cylinder 15, and the protective cylinder 15 is rotatably arranged between the baffle 31. The filter screen 32 on the baffle 31 is arranged in a rectangular shape around the center of the baffle 31, the first gears 16 on each protective cylinder 15 are sequentially engaged, and a second gear 17 is rotatably arranged at the center position of the bottom surface of the baffle 31, the second gear 17 is engaged with the corresponding first gear 16, and the connecting shaft 91 connected with the first motor 7 penetrates the second gear 17. At the same time, the baffle 31 is provided with a scraper 18 in each protective cylinder 15, and the scraper 18 is matched with the inner wall of the corresponding protective cylinder 15. When the connecting shaft 91 rotates, the second gear 17 connected with the connecting shaft 91 also rotates, and the first gear 16 engaged with the second gear 17 also rotates, and when the first gear 16 rotates, the protective cylinder 15 connected with the first gear 16 also rotates on the baffle 31. Under the action of the scraper 18 matched with the protective cylinder 15, the impurities and particles on the inner wall of the protective cylinder 15 are scraped off by the scraper 18, so as to achieve the purpose of cleaning the impurities on the inner wall of the protective cylinder 15 by the scraper 18. In this way, the long-term accumulation of impurities on the inner wall of the protective cylinder 15 can be prevented, the gap between the protective cylinder 15 and the filter screen 32 is reduced, and the filtering efficiency of the filter screen 32 is affected.

[0026] Method for using: the suction machine 14 works, the smoke dust generated during steelmaking is sucked into the dust removal tank 1 through the first channel 2, the smoke dust entering the dust removal tank 1 is filtered by the filter screen 32, and the filtered smoke is discharged through the second channel 4 and the suction machine 14. The impurities and particles filtered by the filter screen 32 fall into the dust collecting bin 5, and the new type of discharge valve driven by the first motor 7 can discharge the impurities and particles in the dust collecting bin 5. When the inner wall of the dust removal tank 1 needs to be cleaned, the second motor 95 is started, the second motor 95 drives the connecting rod 93 on the support plate 92 to rotate around the axis of the connecting shaft 91, and makes the spiral shovel 94 rotate, and the spiral shovel 94 rotates to complete the cleaning work of the inner wall of the dust removal tank 1.

[0027] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A dust removal device for steelmaking, characterized in that: Includes a dust collection tank (1), a support bracket (8) for supporting the dust collection tank (1), a filter section (3) is provided inside the dust collection tank (1), and a first channel (2) is connected to the side wall of the dust collection tank (1) below the filter section (3), and a second channel (4) is connected to the top surface of the dust collection tank (1). A suction machine (14) connected to the second channel (4) is provided at the top of the dust collection tank (1), and a dust discharge device is connected to the bottom of the dust collection tank (1). The filter section (3) includes a partition (31) disposed in the dust collection tank (1) and filter screens (32) distributed on the partition (31). The dust collector (1) is provided with a dust scraping assembly (9) for cleaning its inner wall. The dust scraping assembly (9) includes a connecting shaft (91) rotatably located at the top of the dust collector (1). The connecting shaft (91) passes through the dust collector (1) and the partition (31). A support plate (92) is provided at the bottom of the connecting shaft (91). Connecting rods (93) are provided at both ends of the support plate (92). A spiral shovel (94) is provided on the connecting rod (93). The spiral shovel (94) is adapted to the inner wall of the dust collector (1). A second motor (95) is provided on the dust collector (1). The second motor (95) is connected to the connecting shaft (91).

2. The steelmaking dust removal device according to claim 1, characterized in that: The top end of the connecting rod (93) is connected by a connecting ring (10), and the connecting ring (10) is located inside the dust collector (1) and is adapted to its inner wall.

3. The steelmaking dust removal device according to claim 2, characterized in that: The dust removal device includes a dust collection bin (5) connected to the bottom of the dust collection bin (1), a planetary feed valve (6) connected to the bottom of the dust collection bin (5), and a first motor (7) provided on the planetary feed valve (6), the first motor (7) being connected to the planetary feed valve (6).

4. A steelmaking dust removal device according to claim 3, characterized in that: The dust collection tank (1) is equipped with a pulse device for cleaning the filter screen (32), and the pulse device includes an air tank (11) on the side wall of the dust collection tank (1), an air jet pipe (12) on the dust collection device, a nozzle (13) corresponding to the filter screen (32) connected to the air jet pipe (12), and a pulse valve (111) on the outer end of the air jet pipe (12).

5. A steelmaking dust removal device according to claim 4, characterized in that... ； The bottom surface of the partition (31) is provided with protective cylinders (15), and the protective cylinders (15) are set with corresponding filters (32). The filters (32) are located inside their corresponding protective cylinders (15), and there is a gap between the filters (32) and the protective cylinders (15).

6. A steelmaking dust removal device according to claim 5, characterized in that... ； The top of the protective cylinder (15) is provided with a first gear (16). The protective cylinder (15) and the partition (31) are rotatably connected. The filter screen (32) on the partition (31) is arranged in a rectangle around the center of the partition (31). The first gears (16) on each protective cylinder (15) mesh in sequence. A second gear (17) is rotatably provided at the center of the bottom surface of the partition (31). The second gear (17) meshes with its corresponding first gear (16). The connecting shaft (91) passes through the second gear (17); Each partition (31) is equipped with a scraper (18) located inside each protective cylinder (15), and the scraper (18) is matched with the inner wall of its corresponding protective cylinder (15).

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