Blast furnace coal powder injection tank inner filter structure

Abstract

This utility model discloses an internal filtration structure for a blast furnace pulverized coal injection tank, relating to the technical field of blast furnace injection equipment. It includes a tank body, with a circular sleeve fixedly installed at the lower outlet of the tank body. Both the upper and lower sides of the circular sleeve are open. A discharge mechanism is fixedly installed on the right side wall of the tank body near the upper side. The discharge mechanism includes a discharge pipe and a filter screen. A cleaning mechanism is fixedly installed on the corresponding left side wall of the tank body. The cleaning mechanism includes a motor, a fixing plate, a scraper, and a wire brush. A discharge mechanism is fixedly installed on the inner wall of the circular sleeve near the lower side. The discharge mechanism includes a first guide hopper, a second guide hopper, a first sleeve, a second sleeve, a fixing plate, an electric telescopic rod, and a plug. This utility model adds a cleaning function to the discharge mechanism, effectively preventing blockage and achieving automatic cleaning. It can discharge filtered impurities without stopping the machine, greatly improving work efficiency and facilitating use.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace injection equipment, specifically to a filtration structure inside a blast furnace pulverized coal injection tank. Background Technology

[0002] In current pulverized coal injection systems used both domestically and internationally, impurities in the finished pulverized coal cannot be completely removed. Furthermore, during routine production malfunctions or maintenance, components and foreign objects falling into the system often cause blockages in the coal guns or main coal conveying pipelines, introducing instability into normal production. To address these issues, domestic pulverized coal injection engineers have adopted methods such as pulverized coal vibrating screens and adding filters to the main injection pipeline, achieving some success.

[0003] In existing technologies, a common problem is that the filter structure on the vibrating screen or discharge pipe lacks a cleaning function, which makes the filter structure very easy to get clogged, greatly affecting work efficiency. Furthermore, after filtering out a large amount of impurities, it is necessary to stop the machine to manually clean the filtered impurities, which is time-consuming and labor-intensive, and affects the normal use of the pulverized coal injection tank in the blast furnace. Utility Model Content

[0004] This invention provides an internal filtration structure for pulverized coal injection tanks in blast furnaces to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an internal filtration structure for a blast furnace pulverized coal injection tank, comprising a tank body, a circular sleeve fixedly installed at the lower outlet of the tank body, and both the upper and lower sides of the circular sleeve being open structures; a discharge mechanism fixedly installed on the right side wall of the tank body near the upper side; a cleaning mechanism fixedly installed on the left side wall of the tank body corresponding to the discharge mechanism, and the cleaning mechanism being movably fitted with the discharge mechanism; and a discharge mechanism fixedly installed on the inner wall of the circular sleeve near the lower side.

[0006] Furthermore, the discharge mechanism includes a discharge pipe and a filter screen. The discharge pipe is fixedly installed on the right side wall of the circular sleeve near the upper side. The right side of the discharge pipe has an open structure, and the filter screen is evenly distributed on the part of the side wall of the discharge pipe inside the circular sleeve.

[0007] Furthermore, the cleaning mechanism includes a motor, a fixing plate, a scraper, and a wire brush. The motor is fixedly installed on the left side of the circular sleeve, and a mounting plate is fixedly installed on the right side of the motor's output shaft. The mounting plate is installed inside the circular sleeve. Scrapers are fixedly installed on both the front and rear edges of the right side of the mounting plate, and wire brushes are fixedly installed on both the front and rear edges of the right side of the mounting plate. Both the scraper and the wire brush are in movable contact with the outer surface of the discharge pipe.

[0008] Furthermore, the discharge mechanism includes a first guide hopper, a second guide hopper, a first sleeve, a second sleeve, a fixing plate, an electric telescopic rod, and a plug. The first guide hopper and the second guide hopper are fixedly installed on the inner wall of the circular sleeve from top to bottom. The first sleeve is fixedly embedded in the first guide hopper, and the second sleeve is fixedly embedded in the second guide hopper. The fixing plate is fixedly installed on the lower surface of the circular sleeve. The electric telescopic rod is fixedly installed on the lower surface of the fixing plate. A plug is fixedly installed on the upper surface of the output shaft of the electric telescopic rod, and the plug is vertically aligned with the first sleeve and the second sleeve.

[0009] Furthermore, both the upper and lower sides of the first and second sleeves are open structures, and the inner diameter of the first sleeve is two-thirds of the inner diameter of the second sleeve.

[0010] Furthermore, the front and rear width of the fixing plate is 3mm-5mm, and a through hole is provided on the fixing plate at the position corresponding to the electric telescopic rod piston.

[0011] Furthermore, the plug has a cylindrical boss structure, the diameter of the upper part of the plug matches the inner diameter of the first sleeve, and the diameter of the lower part of the plug matches the inner diameter of the second sleeve.

[0012] Compared with the prior art, this utility model provides an internal filtration structure for pulverized coal injection in a blast furnace, which has the following beneficial effects: 1. The filter structure inside the pulverized coal injection tank of this blast furnace has a cleaning mechanism to clean the impurities adhering to the discharge mechanism, effectively preventing blockage of the discharge mechanism. Moreover, it does not require manual cleaning or shutdown for cleaning, making it more convenient to use.

[0013] 2. The internal filtration structure of the pulverized coal injection tank of this blast furnace, through the setting of a discharge mechanism, can discharge the impurities filtered by the discharge mechanism to the outside of the circular sleeve without stopping the machine, without the need for manual shutdown to clean the impurities filtered inside, which greatly improves work efficiency and makes the use safer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a bottom view of the present invention.

[0015] In the diagram: 1. Tank body; 2. Circular sleeve; 3. Discharge mechanism; 301. Discharge pipe; 302. Filter mesh; 4. Cleaning mechanism; 401. Motor; 402. Mounting plate; 403. Scraper; 404. Wire brush; 5. Discharge mechanism; 501. First guide hopper; 502. Second guide hopper; 503. First sleeve; 504. Second sleeve; 505. Fixing plate; 506. Electric telescopic rod; 507. Plug; 6. Through hole. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-3 This utility model discloses an internal filtration structure for a blast furnace pulverized coal injection tank, including a tank body 1. A circular sleeve 2 is fixedly installed at the lower discharge port of the tank body 1, and both the upper and lower sides of the circular sleeve 2 are open structures. A discharge mechanism 3 is fixedly installed on the right side wall of the tank body 1 near the upper side. A cleaning mechanism 4 is fixedly installed on the left side wall of the tank body 1 corresponding to the discharge mechanism 3, and the cleaning mechanism 4 is movably fitted with the discharge mechanism 3. A discharge mechanism 5 is fixedly installed on the inner wall of the circular sleeve 2 near the lower side.

[0018] Specifically, the discharge mechanism 3 includes a discharge pipe 301 and a filter mesh 302. The discharge pipe 301 is fixedly installed on the right side wall of the circular sleeve 2 near the upper side. The right side of the discharge pipe 301 is an open structure. The filter mesh 302 is evenly distributed on the part of the side wall of the discharge pipe 301 inside the circular sleeve 2.

[0019] In this embodiment, the coal powder in the tank 1 enters the discharge pipe 301 through the filter mesh 302 and is then discharged through the discharge pipe 301. At the same time, the filter mesh 302 prevents impurities in the coal powder from entering the discharge pipe 301, thus achieving the effect of filtering the coal powder.

[0020] Specifically, the cleaning mechanism 4 includes a motor 401, a mounting plate 402, a scraper 403, and a wire brush 404. The motor 401 is fixedly installed on the left side of the circular sleeve 2. The mounting plate 402 is fixedly installed on the right side of the output shaft of the motor 401 and is installed inside the circular sleeve 2. The scraper 403 is fixedly installed on both the front and rear edges of the right side of the mounting plate 402. The wire brush 404 is fixedly installed on both the front and rear edges of the right side of the mounting plate 402. The scraper 403 and the wire brush 404 are both movably attached to the outer surface of the discharge pipe 301.

[0021] In this embodiment, the output shaft of the motor 401 drives the mounting plate 402 to rotate, which in turn drives the scraper 403 and the wire brush 404 to rotate. The scraper 403 can filter the impurities adhering to the outside of the discharge pipe 301, and the wire brush 404 can clean the blockages in the filter mesh 302, effectively preventing the filter mesh 302 from being blocked. A mechanical seal is provided on the left side wall of the circular sleeve 2 corresponding to the output shaft of the motor 401.

[0022] Specifically, the discharge mechanism 5 includes a first guide hopper 501, a second guide hopper 502, a first sleeve 503, a second sleeve 504, a fixing plate 505, an electric telescopic rod 506, and a plug 507. The first guide hopper 501 and the second guide hopper 502 are fixedly installed on the inner wall of the circular sleeve 2 from top to bottom. The first sleeve 503 is fixedly embedded in the first guide hopper 501, and the second sleeve 504 is fixedly embedded in the second guide hopper 502. The fixing plate 505 is fixedly installed on the lower surface of the circular sleeve 2. The electric telescopic rod 506 is fixedly installed on the lower surface of the fixing plate 505. The plug 507 is fixedly installed on the upper surface of the output shaft of the electric telescopic rod 506, and the plug 507 is vertically aligned with the first sleeve 503 and the second sleeve 504.

[0023] In this embodiment, the lower part of the plug 507 on the upper surface of the output shaft of the electric telescopic rod 506 is inserted into the first sleeve 503 to achieve a sealing effect on the second sleeve 504. At this time, the upper part of the plug 507 is a certain distance away from the first sleeve 503. The impurities filtered by the discharge mechanism 3 fall into the upper surface of the second guide bucket 502 through the first guide bucket 501 and the first sleeve 503. When it is necessary to discharge the impurities, the output shaft of the electric telescopic rod 506 drives the plug 507 to move upward. Before the lower part of the plug 507 is completely detached from the second sleeve 504, the upper part of the plug 507 is inserted into the first sleeve. In step 503, the first sleeve 503 is sealed. At this time, the plug 507 continues to move upward, so that the plug 507 completely detaches from the second sleeve 504 while sealing the first sleeve 503. This allows impurities on the upper surface of the second guide bucket 502 to be discharged through the second sleeve 504, achieving the effect of impurity removal. After impurity removal is completed, the output shaft of the electric telescopic rod 506 drives the plug 507 to reset. When the upper part of the plug 507 is not completely detached from the first sleeve 503, the lower part of the plug 507 is inserted into the second sleeve 504, achieving the effect of sealing the second sleeve 504 and effectively preventing air leakage during the impurity removal process.

[0024] Specifically, both the upper and lower sides of the first sleeve 503 and the second sleeve 504 are open structures, and the inner diameter of the first sleeve 503 is two-thirds of the inner diameter of the second sleeve 504.

[0025] In this embodiment, the first sleeve 503 and the second sleeve 504 can better meet the requirements for impurity flow.

[0026] Specifically, the front and rear width of the fixing plate 505 is 3mm-5mm, and a through hole 6 is provided on the fixing plate 505 at the position corresponding to the piston of the electric telescopic rod 506.

[0027] In this implementation scheme, the through hole 6 meets the requirement of the output shaft of the electric telescopic rod 506 passing up and down.

[0028] Specifically, the plug 507 is a cylindrical boss structure, the diameter of the upper part of the plug 507 matches the inner diameter of the first sleeve 503, and the diameter of the lower part of the plug 507 matches the inner diameter of the second sleeve 504.

[0029] In this embodiment, the plug 507 can better seal the first sleeve 503 and the second sleeve 504.

[0030] During use, the pulverized coal in tank 1 enters the discharge pipe 301 through the filter mesh 302 in the discharge mechanism 3, and is then discharged through the discharge pipe 301. Simultaneously, the filter mesh 302 prevents impurities in the pulverized coal from entering the discharge pipe 301, achieving the effect of filtering the pulverized coal. The filtered impurities are inserted into the first sleeve 503 through the lower part of the plug 507 on the upper surface of the output shaft of the electric telescopic rod 506 in the discharge mechanism 5, achieving a sealing effect on the second sleeve 504. At this time, the upper part of the plug 507 is at a certain distance from the first sleeve 503. Impurities filtered by the discharge mechanism 3 fall through the first guide bucket 501 and the first sleeve 503 onto the upper surface of the second guide bucket 502. Then, the output shaft of the motor 401 in the cleaning mechanism 4 drives the mounting plate 402 to rotate, causing the mounting plate 402 to rotate the scraper 403 and the wire brush 404. The scraper 403 filters impurities adhering to the outside of the discharge pipe 301, and the wire brush 404 cleans blockages inside the filter mesh 302, effectively preventing the filter mesh 302 from becoming clogged. Furthermore, no manual cleaning or machine shutdown is required for cleaning, making it more convenient to use. The cleaned impurities also fall onto the upper surface of the second guide bucket 502 through the first guide bucket 501 and the first sleeve 503. When it is necessary to discharge the impurities, the output shaft of the electric telescopic rod 506 drives the plug 507 to move upward. Before the lower part of the plug 507 is completely detached from the second sleeve 504, the upper part of the plug 507 is inserted into the first sleeve 503, achieving the effect of sealing the first sleeve 503. At this time, the plug 507 continues to move upward, so that the plug 507 completely detaches from the second sleeve 504 while sealing the first sleeve 503, allowing the second guide bucket 502 to discharge. Impurities on the upper surface of the hopper 502 are discharged through the second sleeve 504, achieving the effect of impurity removal. After the impurity removal is completed, the output shaft of the electric telescopic rod 506 drives the plug 507 to reset. When the upper part of the plug 507 is not completely detached from the first sleeve 503, the lower part of the plug 507 is inserted into the second sleeve 504, achieving the effect of sealing the second sleeve 504. This allows the filtered impurities to be discharged outside the circular sleeve 2 without stopping the machine, eliminating the need for manual shutdown to clean the filtered impurities inside, greatly improving work efficiency and making it safer to use.

[0031] In summary, the internal filtration structure of the pulverized coal injection tank in this blast furnace increases the cleaning function of the discharge mechanism 3, effectively preventing blockage of the discharge mechanism 3, and realizing automatic cleaning. It can discharge the filtered impurities without stopping the machine, greatly improving work efficiency and facilitating use.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration structure inside a pulverized coal injection tank for a blast furnace, comprising a tank body (1), characterized in that: A circular sleeve (2) is fixedly installed at the lower outlet of the tank (1), and both the upper and lower sides of the circular sleeve (2) are open structures. A discharge mechanism (3) is fixedly installed on the right side wall of the tank (1) near the upper side. A cleaning mechanism (4) is fixedly installed on the left side wall of the tank (1) corresponding to the discharge mechanism (3), and the cleaning mechanism (4) is movably fitted with the discharge mechanism (3). A discharge mechanism (5) is fixedly installed on the inner wall of the circular sleeve (2) near the lower side.

2. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 1, characterized in that: The discharge mechanism (3) includes a discharge pipe (301) and a filter mesh (302). The discharge pipe (301) is fixedly installed on the right side wall of the sleeve (2) near the upper side. The right side of the discharge pipe (301) is an open structure. The filter mesh (302) is evenly opened on the part of the side wall of the discharge pipe (301) inside the sleeve (2).

3. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 1, characterized in that: The cleaning mechanism (4) includes a motor (401), a mounting plate (402), a scraper (403), and a wire brush (404). The motor (401) is fixedly installed on the left side of the sleeve (2). The mounting plate (402) is fixedly installed on the right side of the output shaft of the motor (401), and the mounting plate (402) is installed inside the sleeve (2). The scraper (403) is fixedly installed on the front and rear edges of the right side of the mounting plate (402). The wire brush (404) is fixedly installed on the front and rear edges of the right side of the mounting plate (402). The scraper (403) and the wire brush (404) are both in contact with the outer surface of the discharge pipe (301).

4. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 1, characterized in that: The discharge mechanism (5) includes a first guide bucket (501), a second guide bucket (502), a first sleeve (503), a second sleeve (504), a fixing plate (505), an electric telescopic rod (506), and a plug (507). The first guide bucket (501) and the second guide bucket (502) are fixedly installed on the inner wall of the circular sleeve (2) from top to bottom. The first sleeve (503) is fixedly embedded on the first guide bucket (501), and the second sleeve (504) is fixedly embedded on the second guide bucket (502). The fixing plate (505) is fixedly installed on the lower surface of the circular sleeve (2). The electric telescopic rod (506) is fixedly installed on the lower surface of the fixing plate (505). The plug (507) is fixedly installed on the upper surface of the output shaft of the electric telescopic rod (506), and the plug (507) is vertically aligned with the first sleeve (503) and the second sleeve (504).

5. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 4, characterized in that: The first sleeve (503) and the second sleeve (504) are both open on the upper and lower sides. The inner diameter of the first sleeve (503) is two-thirds of the inner diameter of the second sleeve (504).

6. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 4, characterized in that: The front and rear width of the fixing plate (505) is 3mm-5mm, and a through hole (6) is provided on the fixing plate (505) at the position corresponding to the piston of the electric telescopic rod (506).

7. The filtration structure inside the pulverized coal injection tank of a blast furnace according to claim 4, characterized in that: The plug (507) is a cylindrical boss structure. The diameter of the upper part of the plug (507) matches the inner diameter of the first sleeve (503), and the diameter of the lower part of the plug (507) matches the inner diameter of the second sleeve (504).

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