Smoke leakage prevention device for auxiliary material opening of metallurgical furnace
By designing multiple jet heads and nitrogen gas wall structures at the auxiliary material port of the copper metallurgy furnace, the problem of flue gas overflow at the auxiliary material port of the traditional copper metallurgy furnace is solved, effectively preventing flue gas from spilling, and improving air quality.
Patent Information
- Application Number
- CN202421135166.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The structure of the auxiliary material port of the traditional copper metallurgy furnace causes the flue gas in the metallurgy furnace to overflow when added to the material, causing air pollution. The existing environmental flue gas collection device is not effective.
A smoke leakage prevention device is designed, including a material port frame, a gate and multiple jet heads. Compressed nitrogen is provided through the main air pipe and air bag to form an air wall to prevent the smoke from overflowing. The jet head is controlled synchronously with the gate driving mechanism.
Effectively prevent the overflow of flue gas in the metallurgical furnace, improve the air quality, and improve the flue gas collection effect.
Smart Images
Figure CN222279394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of copper metallurgy, in particular to a smoke leakage prevention device for an auxiliary material port of a metallurgical furnace. Background Art
[0002] At present, copper metallurgical furnaces are usually equipped with auxiliary material ports, which serve as channels for adding auxiliary materials such as flux and cold materials into the furnace. The auxiliary material port consists of a port frame and a gate. The port frame is mostly a water jacket structure with a port that runs through the front and back. The gate is placed in the door slot of the port frame to completely block the port and prevent the flue gas in the metallurgical furnace from overflowing through the port. When adding materials, the gate is lifted to expose the port; after the feeding is completed, the gate is lowered to close the port. This traditional structure has the following technical problems: when adding materials to the auxiliary material port, the flue gas in the copper metallurgical furnace overflows from the port, causing air pollution in the factory. Some companies set up a ring-shaped flue gas collection device above the auxiliary material port. Due to the need to ensure the lifting space of the gate, the smoke hood is far away from the port, and the effect of capturing flue gas is not ideal. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a smoke leakage prevention device for an auxiliary material port of a metallurgical furnace, which prevents a large amount of smoke from overflowing when materials are added from the auxiliary material port.
[0004] The specific scheme of the utility model is as follows: a smoke leakage prevention device for the auxiliary material port of a metallurgical furnace, comprising a material port frame and a gate, through auxiliary material ports are arranged on both sides of the material port frame, a door slot is arranged in the middle of the material port frame, the door slot matches the gate, a plurality of nozzles are installed on the outward side of the material port frame, and the plurality of nozzles are arranged in a row from top to bottom, all the nozzles are connected to a main gas pipe through pipelines, an air bag is connected to the input end of the main gas pipe, compressed nitrogen is filled in the air bag, all the nozzles synchronously spray nitrogen to form an air wall, a control valve is installed on the main gas pipe, the control valve is connected to a controller signal, and the controller is simultaneously connected to the gate drive mechanism signal.
[0005] Preferably, a manual valve is also provided on the main air pipe.
[0006] Preferably, the spraying direction of the spray head is inclined from the outside to the inside of the material opening frame.
[0007] Preferably, the spray heads are arranged in a horizontal direction.
[0008] Preferably, the number of the jet heads is 8-10, and the gas storage volume of the air bag is 0.5m 3 ~2m 3 , output pressure 0.2MPa~0.8MPa.
[0009] Compared with the prior art, the utility model has the following beneficial effects: a plurality of air jets are used to form an air wall, thereby preventing the smoke in the furnace from overflowing when the material port is opened. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model;
[0011] Figure 2 yes Figure 1 AA view;
[0012] Figure 3 yes Figure 2 BB view;
[0013] In the figure: 1. Air bag; 2. Main air pipe; 3. Control valve; 4. Manual valve; 5. Pipeline; 6. Injection head; 7. Material inlet frame; 8. Auxiliary material inlet; 9. Gate; 10. Controller. DETAILED DESCRIPTION
[0014] like Figure 1-3 As shown, the present embodiment provides a smoke leakage prevention device for the auxiliary material port of a metallurgical furnace, comprising a material port frame 7 and a gate 9. Through auxiliary material ports 8 are provided on both sides of the material port frame 7. A gate groove is provided in the middle of the material port frame 7, and the gate groove matches the gate 9. 8-10 nozzles 6 are installed on the outward side of the material port frame 7. The nozzles 6 are made of a φ20mm steel pipe. The axis of the spray head is arranged parallel to the horizontal direction. All the nozzles 6 are arranged in a row from top to bottom. All the nozzles 6 are connected to a φ80mm main gas pipe 2 through a pipeline 5. The input end of the main gas pipe 2 is connected to an air bag 1 with a gas storage volume of 1m3. The air bag 1 is filled with compressed nitrogen. The output pressure of the nitrogen is 0.2MPa~0.8MPa. All the nozzles 6 synchronously spray nitrogen to form an air wall. A control valve 3 is installed on the main gas pipe 2. The control valve 3 is connected to a controller 10 signal-connected, and the controller 10 is also connected to the drive mechanism of the gate 9 signal-connected.
[0015] Preferably, a manual valve 4 is also provided on the main air pipe 2 .
[0016] Preferably, the spraying direction of the spray head 6 is set to be inclined from the outside to the inside of the material opening frame 7 by 10°-45°.
[0017] The working principle of the utility model is as follows: the manual valve 4 is in a normally open state during normal use. When the copper metallurgical furnace needs to add auxiliary materials from the material port frame 7, the driving mechanism of the gate 9 controls the gate 9 to lift upward and sends the lifting signal to the controller 10. The controller 10 interlocks to open the control valve 3. The nitrogen in the air bag 1 flows into each nozzle 6 through the main gas pipe 2, and finally sprays out from the head of the nozzle 6, and sprays from the outside of the material port frame 7 to the inside of the material port frame 7. The nitrogen is continuously sprayed and diffused to form an air wall, which can prevent the smoke from overflowing from the material port 8. After the feeding is completed, the driving signal of the gate 9 controls the gate 9 to descend, and sends the descending signal to the controller 10. The controller 10 interlocks to control the closing of the control valve 3 and stops the output of nitrogen; when the main gas pipe 2 or the nozzle 6 needs to be inspected and maintained, the manual valve 4 is closed.
Claims
1. A smoke leakage prevention device for an auxiliary material port of a metallurgical furnace, comprising a port frame and a gate, wherein two sides of the port frame are provided with through auxiliary material ports, and a door slot is provided in the middle of the port frame, and the door slot matches the gate, and is characterized in that: A number of nozzles are installed on the outward side of the material port frame, and the nozzles are arranged in a row from top to bottom. All the nozzles are connected to a main gas pipe through pipelines. The input end of the main gas pipe is connected to an air bag, and the air bag is filled with compressed nitrogen. All the nozzles synchronously spray nitrogen to form an air wall. A control valve is installed on the main gas pipe. The control valve is connected to a controller signal, and the controller is also connected to the gate drive mechanism signal.
2. The smoke leakage prevention device for the auxiliary material port of a metallurgical furnace according to claim 1, characterized in that: A manual valve is also provided on the main air pipe.
3. The smoke leakage prevention device for the auxiliary material port of a metallurgical furnace according to claim 1, characterized in that: The spraying direction of the spray head is inclined from the outside to the inside of the material opening frame.
4. The smoke leakage prevention device for the auxiliary material port of a metallurgical furnace according to claim 1, characterized in that: The spray heads are arranged in a horizontal direction.
5. The smoke leakage prevention device for the auxiliary material port of a metallurgical furnace according to claim 1, characterized in that: The number of the jet heads is 8-10, and the gas storage volume of the air bag is 0.5m 3 ~2m 3 , output pressure 0.2MPa~0.8MPa.