Broken coke purging device for tuyere large cover

Abstract

A broken coke blowing device for a tuyere large cover comprises a sealing cylinder, a front end cover, a rear end cover, a butt joint cylinder and a blowing part. The front end cover and the rear end cover are arranged at the two ends of the sealing cylinder respectively. The butt joint cylinder is arranged on the outer wall of the front end cover; the purging part is arranged between the front end cover and the rear end cover; the axis of the butt joint cylinder coincides with the axis of the front end cover. An internal thread is arranged on the inner wall of the butt joint cylinder; the peephole is externally connected with a connecting cylinder, the outer wall of the connecting cylinder is provided with external threads, and the internal threads at the end of the tuyere mirror cap and the external threads on the outer wall of the connecting cylinder form a threaded connection structure; and the internal thread on the inner wall of the butt joint cylinder and the external thread on the outer wall of the connecting cylinder form a threaded connection structure. According to the utility model, broken coke accumulated at the large cover of the tuyere is effectively purged.

Description

Technical Field

[0001] This utility model relates to a purging device, and more particularly to a device capable of purging and cleaning up the charcoal debris accumulated inside the vent cover, belonging to the technical field of charcoal debris cleaning equipment for vent covers. Background Technology

[0002] In blast furnace production, fluctuations in furnace conditions can lead to reduced airflow at the tuyeres. This reduced airflow causes some coke fragments to flow back into the tuyeres cover area. Workers observe the furnace interior through the tuyeres inspection holes via the direct-blowing pipes. Since the tuyeres cover is located between the furnace interior and these inspection holes, blockages in the cover render the inspection holes ineffective, preventing observation. Cleaning the accumulated coke fragments within the tuyeres cover involves opening the small tuyeres cover under high air pressure, causing the coke fragments to spray out. This process results in random and haphazard coke ejection, polluting the environment and posing significant safety hazards to workers. Furthermore, the burned ends of the small tuyeres cover can cause improper replacement, leading to air leakage at the junction of the small and large covers, creating potential hazards, and even burning the large cover, forcing a shutdown and replacement, severely impacting production. Therefore, a coke fragment cleaning device is needed that can effectively and safely clean the accumulated coke fragments within the tuyeres cover. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slag removal device for the vent cover, which can clean up the slag accumulated at the vent cover while ensuring safety.

[0004] The problem described in this utility model is solved by the following technical solution:

[0005] A coke purging device for a large vent cover includes a sealing cylinder, a front end cover, a rear end cover, a connecting cylinder, and a purging section. The front end cover and the rear end cover are respectively disposed at both ends of the sealing cylinder. The connecting cylinder is disposed on the outer wall of the front end cover. The purging section is disposed between the front end cover and the rear end cover. The axis of the connecting cylinder coincides with the axis of the front end cover. The inner wall of the connecting cylinder is provided with an internal thread. A viewing hole is connected to a connecting cylinder, and the outer wall of the connecting cylinder is provided with an external thread. The internal thread at the end of the vent cap and the external thread on the outer wall of the connecting cylinder form a threaded connection structure. The internal thread on the inner wall of the connecting cylinder and the external thread on the outer wall of the connecting cylinder form a threaded connection structure.

[0006] The aforementioned coke blowing device for the large cover of the air vent includes a blowing mechanism and an air supply mechanism; the blowing mechanism and the air supply mechanism are connected; the blowing mechanism passes through the front cover and the air supply mechanism passes through the rear cover.

[0007] The aforementioned coke blowing device for the vent cover includes a ring and a steel pipe. The front cover has a central hole, and the first end of the steel pipe passes through this central hole. The second end of the steel pipe is open, and multiple nozzles are provided on the circumferential sidewall of the first end. The second end of the outer wall of the steel pipe is connected to the inner wall of the ring via a bracket. The axis of the ring coincides with the axis of the steel pipe. A spiral guide groove is provided on the inner wall of the sealing cylinder, and a guide block is provided on the outer wall of the ring. The guide block on the outer wall of the ring is slidably disposed within the spiral guide groove on the inner wall of the sealing cylinder.

[0008] The aforementioned coke blowing device for the large air vent cover includes an air supply mechanism comprising an air supply pipe, a push rod, and a push plate. A hole is provided in the center of the rear end cover, and the air supply pipe passes through this central hole. The first end of the air supply pipe is connected to the open end of the second end of a steel pipe, and the second end of the air supply pipe passes through the central hole of the push plate. The second end of the air supply pipe is connected to the air outlet of an air compressor via a flexible hose. A guide groove is provided on the side wall of the ring near the rear end cover, and a guide hole is provided on the rear end cover. The push rod passes through the guide hole on the rear end cover, and one end of the push rod is slidably disposed within the guide groove on the side wall of the ring. The other end of the push rod is connected to the push plate.

[0009] This invention connects the device to the connecting cylinder on the small cover of the air vent through the docking cylinder, preventing charcoal fragments from overflowing from the inspection hole of the small cover of the air vent during the purging process; the purging mechanism effectively purifies the inside of the large cover of the air vent with high-pressure airflow, and the purging mechanism is supplied with air through the air supply mechanism. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0012] Figure 3 This is a partially enlarged structural diagram of component A of this utility model;

[0013] Figure 4 This is a partially enlarged structural diagram of the present invention, B.

[0014] The list of labels in the diagram is as follows: 1. Sealing cylinder, 2. Front end cover, 3. Rear end cover, 4. Connecting cylinder, 5. Ring, 6. Steel pipe, 7. Spiral guide groove, 8. Air supply pipe, 9. Push plate. Detailed Implementation

[0015] See Figure 1 , 2 3 and Figure 4The present invention includes a sealing cylinder 1, a front end cover 2, a rear end cover 3, a docking cylinder 4, and a purging part; the front end cover 2 and the rear end cover 3 are respectively disposed at both ends of the sealing cylinder 1; the docking cylinder 4 is disposed on the outer wall of the front end cover 2; the purging part is disposed between the front end cover 2 and the rear end cover 3; the axis of the docking cylinder 4 coincides with the axis of the front end cover 2.

[0016] Workers observe the furnace interior through a tuyere cap. The tuyere cap is connected to the external thread of the connecting cylinder on the tuyere cover via its internal thread. When the tuyere cap is unscrewed, the connecting cylinder opens the channel between the external connection and the tuyere cover. The inner wall of the connecting cylinder 4 is provided with internal threads. The viewing hole is connected to the connecting cylinder, and the outer wall of the connecting cylinder is provided with external threads. The internal thread at the end of the tuyere cap and the external thread on the outer wall of the connecting cylinder form a threaded connection structure. The internal thread on the inner wall of the connecting cylinder 4 and the external thread on the outer wall of the connecting cylinder form a threaded connection structure.

[0017] The purging section includes a purging mechanism and a gas supply mechanism; the purging mechanism and the gas supply mechanism are connected; the purging mechanism passes through the front cover 2, and the gas supply mechanism passes through the rear cover 3. After passing through the docking cylinder 4, the purging mechanism enters the small tuyer cover, and continues to enter the large tuyer cover; when the gas supply mechanism injects high-pressure airflow into the purging mechanism, the high-pressure airflow passes through the purging mechanism and blows high-pressure airflow into the large tuyer cover, blowing the coke fragments accumulated at the large tuyer cover back into the furnace.

[0018] The purging mechanism includes a circular ring 5 and a steel pipe 6; the front cover 2 has a hole in its center, and the first end of the steel pipe 6 passes through the central hole of the front cover 2; the steel pipe 6 moves forward or backward through the central hole of the front cover 2; the second end of the steel pipe 6 is open, and multiple nozzles are provided on the circumferential sidewall of the first end of the steel pipe 6; the second end of the steel pipe 6 is connected to a gas supply pipe 8, which injects high-pressure gas into the steel pipe 6, and the high-pressure gas is ejected from the nozzles at the first end of the steel pipe 6, spraying the broken coke inside the tuyeres cover to purge it and blow it back into the furnace; the second end of the outer wall of the steel pipe 6 is connected to the inner wall of the circular ring 5 through a bracket, and the circular ring 5 and the steel pipe 6 rotate synchronously. When the circular ring 5 rotates... The ring 5 drives the steel pipe 6 to rotate synchronously; the axis of the ring 5 coincides with the axis of the steel pipe 6; a spiral guide groove 7 is provided on the inner wall of the sealing cylinder 1, and a guide block is provided on the outer wall of the ring 5. The guide block on the outer wall of the ring 5 is slidably disposed in the spiral guide groove 7 on the inner wall of the sealing cylinder 1; when the ring 5 is pushed forward by the push rod, since the guide block on it is slidably disposed in the spiral guide groove 7, the ring 5 will make a spiral forward movement in the forward state. The ring 5 drives the steel pipe 6 to make a spiral forward movement synchronously. The steel pipe rotates while spraying high-pressure airflow. The high-pressure airflow sprayed by the rotating steel pipe is more evenly distributed in the spray area, which allows the broken coke in the vent cover to be more fully purged.

[0019] The air supply mechanism includes an air supply pipe 8, a push rod, and a push plate 9; the rear end cover 3 has a hole in its center, and the air supply pipe 8 passes through the central hole of the rear end cover 3; the first end of the air supply pipe 8 is connected to the open end of the second end of the steel pipe 6, the second end of the air supply pipe 8 passes through the central hole of the push plate 9, and the second end of the air supply pipe 8 is connected to the air outlet of the air compressor through a flexible hose; the high-pressure air in the air compressor passes through the air supply pipe 8 and the steel pipe 6 in sequence and is then sprayed into the air outlet cover to blow away the coke fragments; a guide ring is provided on the side wall of the ring 5 near the rear end cover 3. The groove has a guide hole on the rear end cover 3. The push rod passes through the guide hole on the rear end cover 3, and one end of the push rod is slidably set in the guide groove on the side wall of the ring 5. The other end of the push rod is connected to the push plate 9. When the push rod pushes the ring forward, the ring 5 rotates under the action of the spiral guide groove 7, while the push rod can only move back and forth. Therefore, the end of the push rod is slidably set in the circular guide groove on the side wall of the ring. When the ring rotates, the push rod does not need to rotate synchronously with it, ensuring that the push rod smoothly drives the ring to move back and forth, and finally smoothly drives the steel pipe to move back and forth.

[0020] Operating principle: When excessive coke residue accumulates inside the large vent cover and needs to be cleaned, close the valve on the small vent cover to disconnect the connection between the small and large vent covers; then unscrew the vent cap and rotate the connecting cylinder 4 to form a threaded connection between the external thread of the connecting cylinder and the internal thread of the connecting cylinder 4; then open the valve on the small vent cover and start the air compressor; after the valve on the small vent cover is opened, it pushes the push plate 9 to make the ring 6 spiral forward, and the ring 5 drives the steel pipe 6 to spiral forward synchronously. After the steel pipe 6 extends into the vent cover, its end nozzle sprays out high-pressure airflow. During the spiral forward process of the steel pipe 6, the spray... The spiral airflow sweeps away the coke fragments inside the tuyeres, blowing them back into the furnace. The pusher plate 9 drives the ring 5 to move back and forth in a spiral motion, which in turn drives the front part of the steel pipe 6 to move back and forth in a spiral motion inside the tuyeres. The sweating lasts for two to five minutes. Then the pusher plate 9 is pulled back. After the steel pipe 6 returns to its initial position, the tuyeres valve is closed and the air compressor is turned off. Then the connecting cylinder 4 is rotated to unscrew it from the connecting cylinder, and the tuyeres cap is reinstalled in its original position. Then the tuyeres valve is opened. At this point, the coke fragments accumulated inside the tuyeres are cleared, and the tuyeres cap is no longer obstructed by the coke fragments.

Claims

1. A device for blowing away coke debris from a large air vent cover, characterized in that: It includes a sealing cylinder (1), a front end cover (2), a rear end cover (3), a docking cylinder (4), and a purging section; the front end cover (2) and the rear end cover (3) are respectively disposed at both ends of the sealing cylinder (1); the docking cylinder (4) is disposed on the outer wall of the front end cover (2); the purging section is disposed between the front end cover (2) and the rear end cover (3); the axis of the docking cylinder (4) coincides with the axis of the front end cover (2); the inner wall of the docking cylinder (4) is provided with an internal thread; the viewing hole is connected to a connecting cylinder, and the outer wall of the connecting cylinder is provided with an external thread, the internal thread at the end of the air vent cap and the external thread on the outer wall of the connecting cylinder form a threaded connection structure; the internal thread on the inner wall of the docking cylinder (4) and the external thread on the outer wall of the connecting cylinder form a threaded connection structure.

2. The coke blowing device for the vent cover according to claim 1, characterized in that: The purging section includes a purging mechanism and an air supply mechanism; the purging mechanism and the air supply mechanism are connected; the purging mechanism passes through the front cover (2), and the air supply mechanism passes through the rear cover (3).

3. The slag removal device for the vent cover according to claim 2, characterized in that: The purging mechanism includes a ring (5) and a steel pipe (6); the front end cover (2) has a hole in the center, and the first end of the steel pipe (6) passes through the central hole of the front end cover (2); the second end of the steel pipe (6) is open, and multiple nozzles are provided on the circumferential side wall of the first end of the steel pipe (6); the second end of the outer wall of the steel pipe (6) is connected to the inner wall of the ring (5) through a bracket; the axis of the ring (5) coincides with the axis of the steel pipe (6); a spiral guide groove (7) is provided on the inner wall of the sealing cylinder (1), and a guide block is provided on the outer wall of the ring (5), and the guide block on the outer wall of the ring (5) is slidably disposed in the spiral guide groove (7) on the inner wall of the sealing cylinder (1).

4. The coke crushing and purging device for the large cover of tuyere according to claim 3, characterized in that: The air supply mechanism includes an air supply pipe (8), a push rod, and a push plate (9); the center of the rear cover (3) is provided with a hole, and the air supply pipe (8) passes through the center hole of the rear cover (3); the first end of the air supply pipe (8) is connected to the open end of the second end of the steel pipe (6), the second end of the air supply pipe (8) passes through the center hole of the push plate (9), and the second end of the air supply pipe (8) is connected to the air outlet of the air compressor through a hose; a guide groove is provided on the side wall of the ring (5) near the rear cover (3), a guide hole is provided on the rear cover (3), the push rod passes through the guide hole on the rear cover (3), and one end of the push rod is slidably set in the guide groove on the side wall of the ring (5), and the other end of the push rod is connected to the push plate (9).

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