Device for removing bubbles from molten copper by inputting nitrogen from bottom of air brick

Abstract

The invention relates to the technical field of bubble removing devices, in particular to a device for removing bubbles in molten copper by inputting nitrogen from the bottom of an air brick. The device comprises a mounting frame fixedly connected to the upper end of the copper smelting furnace, the upper end of the mounting frame is rotationally connected with a supporting rod, the lower end of the supporting rod is provided with a replacement assembly and an air brick, the upper end of the mounting frame is provided with a connecting assembly and an air conveying pipe, and the replacement assembly comprises a cavity arc-shaped block fixedly connected to the lower end of the supporting rod; the lower end of the cavity arc-shaped block is fixedly connected with a fixing ring, the air brick is inserted into the fixing ring, through the arrangement of the replacement assembly, when the air brick connected with the supporting rod is replaced, the multiple plug pins are completely retracted into the fixing ring through the pulling mechanism, then the air brick is dragged to be separated from the cavity arc-shaped block, and the air brick is replaced. And then a new air brick is inserted into the fixing ring and is fixed through the bolt, so that the effects of conveniently replacing the air brick and saving resources such as a mounting frame and the like are achieved as much as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of degassing devices, and in particular to a degassing device for copper liquid by inputting nitrogen at the bottom of a porous plug. Background Art

[0002] The degassing device is used to eliminate the bubbles in the copper liquid in the copper smelting furnace. The degassing device is composed of a mounting frame, a support rod, a porous plug, and a nitrogen pipe connected to an external nitrogen source, which are installed at the upper end of the copper smelting furnace. When using the degassing device, the gas delivery pipe connected to the nitrogen tank is connected to the nitrogen pipe, so that nitrogen enters the inside of the support rod, then is squeezed into the porous plug, and nitrogen is output from the porous plug to the copper liquid in the copper smelting furnace. Thus, by using nitrogen during the melting process of the copper liquid, the gas adsorbed by the copper liquid from the air is effectively reduced, and the gas in the copper liquid is better removed, thereby eliminating the bubbles.

[0003] Prior art such as the patent with the authorization announcement number CN209741236U discloses a melting furnace device for copper rod production, including a processing furnace. The right side of the top of the processing furnace is fixedly connected with an air extraction device. The top of the inner cavity of the processing furnace is welded with a partition plate. A driving device is arranged inside the partition plate. The right side of the processing furnace is fixedly connected with an operation panel. Temperature monitoring devices are fixedly connected to both sides of the inner cavity of the processing furnace. The bottom of the processing furnace is communicated with a discharge pipe, and a solenoid valve is fixedly connected to the surface of the discharge pipe. Through the settings of the processing furnace, the air extraction device, the partition plate, the driving device, the operation panel, the temperature monitoring device, the discharge pipe, and the solenoid valve, the copper rod melting furnace can effectively remove the bubbles and impurities in the copper liquid, and at the same time solve the problem that during the process of melting copper raw materials into copper liquid, many impurities and bubbles are often generated, and the impurities and bubbles will affect the purity and quality of the copper rod.

[0004] The inventor found in daily work that when the degassing device is in use, since the porous plug is used in the copper liquid many times, it will be damaged, so the porous plug needs to be replaced. However, since the porous plug is welded to the support rod, replacing the porous plug requires replacing the entire mounting frame, which may not only cause waste of resources such as the mounting frame but also increase the replacement difficulty. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that in the actual use process, since the porous plug is used in the copper liquid many times, it will be damaged, so the porous plug needs to be replaced. However, since the porous plug is welded to the support rod, replacing the porous plug requires replacing the entire mounting frame, which may not only cause waste of resources such as the mounting frame but also increase the replacement difficulty, and to propose a degassing device for copper liquid by inputting nitrogen at the bottom of a porous plug.

[0006] To achieve the above object, the present invention adopts the following technical solution: A device for removing bubbles from molten copper by inputting nitrogen at the bottom of a porous plug, comprising a mounting frame fixedly connected to the upper end of a copper smelting furnace. The upper end of the mounting frame is rotatably connected to a support rod. A replacement component and a porous plug are arranged at the lower end of the support rod. A connection component and an air delivery pipe are arranged at the upper end of the mounting frame. The replacement component includes a cavity arc-shaped block fixedly connected to the lower end of the support rod. A fixing ring is fixedly connected to the lower end of the cavity arc-shaped block. The porous plug is inserted into the fixing ring. A plurality of uniformly distributed pins are slidably inserted into the inner arc surface of the fixing ring, and the pins are inserted into the porous plug.

[0007] The effects achieved by the above components are as follows: By setting the replacement component, when replacing the porous plug connected to the support rod, through the pulling mechanism, the plurality of pins are completely retracted into the fixing ring. Then, the porous plug is dragged to separate it from the cavity arc-shaped block. Then, a new porous plug is inserted into the fixing ring and fixed by the pins, thereby achieving the effect of facilitating the replacement of the porous plug and saving resources such as the mounting frame as much as possible.

[0008] Preferably, a spring is fixedly connected to the right end of the pin, and the other end of the spring is fixed to the fixing ring.

[0009] The effects achieved by the above components are as follows: By setting the spring, the pin is reset.

[0010] Preferably, a pull rope is fixedly connected to the right end of the pin. The pull rope penetrates through the fixing ring. A sliding ring is slidably connected to the arc surface of the fixing ring, and the sliding ring is fixed to the other end of the pull rope.

[0011] The effects achieved by the above components are as follows: Slide the sliding ring downward, so that the plurality of pull ropes are pulled, and thus the plurality of pins are completely retracted into the fixing ring.

[0012] Preferably, a first sealing gasket is arranged between the porous plug and the cavity arc-shaped block, and a sliding surface is opened at the lower end of the pin.

[0013] The effects achieved by the above components are as follows: By setting the first sealing gasket, the space between the porous plug and the cavity arc-shaped block is sealed. By setting the sliding surface, it assists the pin to be inserted into the porous plug.

[0014] Preferably, three uniformly distributed porous plugs are arranged at the lower end of the cavity arc-shaped block, and a sprocket for connecting an external chain is fixedly connected to the arc surface of the support rod.

[0015] The effects achieved by the above components are as follows: Connect the sprocket to the external chain, drive the chain by an external motor, and then drive the sprocket, so that the support rod rotates, and the three porous plugs stir in the molten copper. At the same time, nitrogen is filled into the molten copper from the bottom of the porous plug, thereby better inputting nitrogen into the molten copper and assisting in removing bubbles.

[0016] Preferably, an auxiliary rod is fixedly connected to the left side of the upper end of the cavity arc block. A circular slideway is provided on one side of the mounting frame close to the auxiliary rod, and the auxiliary rod slides in the circular slideway.

[0017] The effect achieved by the above components is that by setting the circular slideway and the auxiliary rod, the cavity arc block is supported.

[0018] Preferably, the connection assembly includes a mounting block fixedly connected to the upper end of the mounting frame. A nitrogen pipe for connecting external nitrogen is fixedly connected to the left end of the mounting block. A cavity ring is rotatably connected to the arc surface of the support rod. The cavity ring is fixed to the nitrogen pipe. A first air inlet hole is provided on the inner arc surface of the cavity ring, and a second air inlet hole is provided on the arc surface of the support rod.

[0019] The effect achieved by the above components is that after nitrogen enters the nitrogen pipe on the mounting block, it enters the support rod through the first air inlet hole of the cavity ring and the second air inlet hole on the support rod. A sealing ring is provided between the cavity ring and the support rod, thereby preventing the nitrogen pipe from being wound around the support rod when the support rod rotates.

[0020] Preferably, a positioning ring is fixedly connected to the arc surface of the nitrogen pipe, and a connecting ring is fixedly connected to the arc surface of the air delivery pipe. A plurality of uniformly distributed positioning grooves are provided on one side of the positioning ring close to the connecting ring. A plurality of uniformly distributed positioning rods are fixedly connected to the left end of the connecting ring. The positioning rods penetrate through the positioning ring. The positioning rods are flexible. A second sealing pad is provided between the positioning ring and the air delivery pipe.

[0021] The effect achieved by the above components is that by dragging the air delivery pipe, the connecting ring is clamped between the positioning ring and the nitrogen pipe, the positioning rods are inserted into the positioning grooves, and the corners of the positioning ring are clamped to the positioning ring. With the help of the second sealing pad, the air delivery pipe and the nitrogen pipe are sealed, thereby fixing the air delivery pipe and the nitrogen pipe.

[0022] Preferably, a release ring is threadedly connected to the arc surface of the positioning ring, and the release ring is adapted to the positioning rod.

[0023] The effect achieved by the above components is that by screwing the release ring, the positioning rods are squeezed and retracted into the positioning grooves, so that the air delivery pipe can be disassembled.

[0024] In summary, the beneficial effects of the present invention are as follows:

[0025] 1. In the present invention, by providing a replacement component, when replacing the breathable brick connected to the support rod, through the pulling mechanism, a plurality of pins are completely retracted into the fixed ring, and then the breathable brick is dragged to separate it from the cavity arc-shaped block. Then, a new breathable brick is inserted into the fixed ring and fixed by the pins, so as to achieve the function of facilitating the replacement of the breathable brick and saving resources such as the mounting frame as much as possible, and solve the problem that since the breathable brick is used in molten copper many times and will be damaged, the breathable brick needs to be replaced. However, since the breathable brick is welded to the support rod, replacing the breathable brick requires replacing the entire mounting frame, which may not only cause waste of resources such as the mounting frame but also increase the replacement difficulty.

[0026] 2. In the present invention, after nitrogen enters the nitrogen gas pipe on the mounting block, it enters the support rod through the first air inlet hole of the cavity ring and the second air inlet hole on the support rod. A sealing ring is provided between the cavity ring and the support rod to prevent the nitrogen gas pipe from being wound around the support rod when the support rod rotates. Drag the air delivery pipe so that the connecting ring is stuck between the positioning ring and the nitrogen gas pipe, and the positioning rod is inserted into the positioning groove, and the corner of the positioning ring is stuck to the positioning ring. With the help of the second sealing pad, the air delivery pipe and the nitrogen gas pipe are sealed, so as to fix the air delivery pipe and the nitrogen gas pipe. Turn the release ring to retract the extrusion positioning rod into the positioning groove, so that the air delivery pipe can be disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 is a three-dimensional structural schematic diagram of the replacement component part of the present invention;

[0029] Figure 3 is a three-dimensional structural schematic diagram of the cross-section of the present invention;

[0030] Figure 4 is of the present invention Figure 3 an enlarged three-dimensional structural schematic diagram of A in;

[0031] Figure 5 is a three-dimensional structural schematic diagram of the connection component of the present invention;

[0032] Figure 6 is a three-dimensional structural schematic diagram of the cross-section of the connection component of the present invention;

[0033] Figure 7 is of the present invention Figure 6 an enlarged three-dimensional structural schematic diagram of B in;

[0034] Figure 8 is a three-dimensional structural schematic diagram of the cross-section of the auxiliary rod of the present invention.

[0035] Legend Explanation: 1. Mounting frame; 2. Replacement component; 3. Connection component; 4. Support rod; 5. Gas pipeline; 6. Permeable brick; 201. Cavity arc block; 202. Fixed ring; 203. Plug; 204. Spring; 205. Pull rope; 206. Slip ring; 207. First gasket; 208. Smooth surface; 209. Sprocket; 210. Auxiliary rod; 211. Circular slideway; 301. Mounting block; 302. Nitrogen pipe; 303. Cavity ring; 304. First air inlet; 305. Second air inlet; 306. Positioning ring; 307. Connection ring; 308. Positioning groove; 309. Positioning rod; 310. Release ring; 311. Second gasket. Detailed Implementation Manner

[0036] Now, further detailed description of the present invention will be made with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] Refer to Figure 1 As shown, a technical solution of the present invention: A device for removing bubbles from molten copper by inputting nitrogen at the bottom of a permeable brick includes a mounting frame 1 fixedly connected to the upper end of a copper smelting furnace. The upper end of the mounting frame 1 is rotatably connected to a support rod 4. The lower end of the support rod 4 is provided with a replacement component 2 and a permeable brick 6. The upper end of the mounting frame 1 is provided with a connection component 3 and a gas pipeline 5.

[0039] Next, the specific settings and functions of the replacement component 2 and the connection component 3 will be specifically described.

[0040] Refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 and also Figure 8As shown in the figure, in this embodiment: The replacement component 2 includes a cavity arc-shaped block 201 fixedly connected to the lower end of the support rod 4. A fixed ring 202 is fixedly connected to the lower end of the cavity arc-shaped block 201. The breathable brick 6 is inserted into the fixed ring 202. A plurality of uniformly distributed pins 203 are slidably inserted into the inner arc surface of the fixed ring 202. The pins 203 are inserted into the breathable brick 6. By setting the replacement component 2, when replacing the breathable brick 6 connected to the support rod 4, through the pulling mechanism, the plurality of pins 203 are completely retracted into the fixed ring 202. Then, the breathable brick 6 is dragged to separate it from the cavity arc-shaped block 201. Then, a new breathable brick 6 is inserted into the fixed ring 202 and fixed by the pins 203, so as to achieve the function of facilitating the replacement of the breathable brick 6 and saving resources such as the mounting frame 1 as much as possible. A spring 204 is fixedly connected to the right end of the pin 203, and the other end of the spring 204 is fixed to the fixed ring 202. By setting the spring 204, the pin 203 is reset. A pull rope 205 is fixedly connected to the right end of the pin 203. The pull rope 205 passes through the fixed ring 202. A sliding ring 206 is slidably connected to the arc surface of the fixed ring 202, and the sliding ring 206 is fixed to the other end of the pull rope 205. The sliding ring 206 is slid downward, so that the plurality of pull ropes 205 are pulled, and thus the plurality of pins 203 are completely retracted into the fixed ring 202. A first sealing gasket 207 is arranged between the breathable brick 6 and the cavity arc-shaped block 201. A sliding surface 208 is opened at the lower end of the pin 203. By setting the first sealing gasket 207, the space between the breathable brick 6 and the cavity arc-shaped block 201 is sealed. By setting the sliding surface 208, it assists the pin 203 to be inserted into the breathable brick 6. Three uniformly distributed breathable bricks 6 are arranged at the lower end of the cavity arc-shaped block 201. A sprocket 209 connected to an external chain is fixedly connected to the arc surface of the support rod 4. The sprocket 209 is connected to the external chain. The chain is driven by an external motor, and then the sprocket 209 is driven, so that the support rod 4 rotates, and the three breathable bricks 6 are stirred in the copper liquid. At the same time, nitrogen is filled into the copper liquid from the bottom of the breathable brick 6, so as to better input nitrogen into the copper liquid and assist in eliminating bubbles. An auxiliary rod 210 is fixedly connected to the upper left side of the cavity arc-shaped block 201. A circular slideway 211 is opened on one side of the mounting frame 1 close to the auxiliary rod 210. The auxiliary rod 210 slides in the circular slideway 211. By setting the circular slideway 211 and the auxiliary rod 210, it assists in supporting the cavity arc-shaped block 201.

[0041] Refer to Figure 5 and Figure 6 as well as Figure 7As shown in the figure, in this embodiment: The connecting component 3 includes a mounting block 301 fixedly connected to the upper end of the mounting frame 1. The left end of the mounting block 301 is fixedly connected to a nitrogen pipe 302 for connecting external nitrogen. The arc surface of the support rod 4 is rotatably connected to a cavity ring 303. The cavity ring 303 is fixed to the nitrogen pipe 302. The inner arc surface of the cavity ring 303 is provided with a first air inlet hole 304, and the arc surface of the support rod 4 is provided with a second air inlet hole 305. After nitrogen enters the nitrogen pipe 302 on the mounting block 301, it enters the support rod 4 through the first air inlet hole 304 of the cavity ring 303 and the second air inlet hole 305 on the support rod 4. A sealing ring is provided between the cavity ring 303 and the support rod 4, thereby preventing the nitrogen pipe 302 from being wound around the support rod 4 when the support rod 4 rotates. The arc surface of the nitrogen pipe 302 is fixedly connected to a positioning ring 306, and the arc surface of the air delivery pipe 5 is fixedly connected to a connecting ring 307. The side of the positioning ring 306 close to the connecting ring 307 is provided with a plurality of uniformly distributed positioning grooves 308. The left end of the connecting ring 307 is fixedly connected to a plurality of uniformly distributed positioning rods 309. The positioning rods 309 penetrate through the positioning ring 306. The positioning rods 309 are flexible. A second sealing pad 311 is provided between the positioning ring 306 and the air delivery pipe 5. Drag the air delivery pipe 5 so that the connecting ring 307 is stuck between the positioning ring 306 and the nitrogen pipe 302, so that the positioning rods 309 are inserted into the positioning grooves 308, and the corners of the positioning ring 306 are stuck to the positioning ring 306. The second sealing pad 311 is used to seal the air delivery pipe 5 and the nitrogen pipe 302, thereby fixing between the air delivery pipe 5 and the nitrogen pipe 302. The arc surface of the positioning ring 306 is threadedly connected to a release ring 310. The release ring 310 is adapted to the positioning rods 309. Twist the release ring 310 so that the positioning rods 309 are squeezed back into the positioning grooves 308, so that the air delivery pipe 5 can be disassembled.

[0042] Working principle:

[0043] When using the degassing device, connect the gas delivery pipe 5 connected to the nitrogen tank to the nitrogen pipe 302, so that nitrogen enters the inside of the support rod 4, then is squeezed into the permeable brick 6, and nitrogen is output from the permeable brick 6 to the molten copper in the copper smelting furnace. Thus, by using nitrogen during the melting process of the molten copper, the adsorption of air gas by the molten copper is effectively reduced, and the gas in the molten copper is better removed, thereby eliminating bubbles. When replacing the permeable brick 6 connected to the support rod 4, slide down the sliding ring 206, so that multiple pull ropes 205 are pulled, and multiple pins 203 are completely retracted into the fixed ring 202. Then drag the permeable brick 6 to separate it from the cavity arc-shaped block 201. Then insert the new permeable brick 6 into the fixed ring 202 and fix it with the pin 203, so as to achieve the function of facilitating the replacement of the permeable brick 6 and saving resources such as the mounting frame 1 as much as possible. By setting the spring 204, the pin 203 is reset. By setting the first gasket 207, the space between the permeable brick 6 and the cavity arc-shaped block 201 is sealed. By setting the sliding surface 208, it assists the pin 203 to insert into the permeable brick 6. Connect the sprocket 209 to the external chain, and drive the chain by an external motor, and then drive the sprocket 209, so that the support rod 4 rotates, and the three permeable bricks 6 stir in the molten copper. At the same time, nitrogen is filled into the molten copper from the bottom of the permeable brick 6, so as to better input nitrogen into the molten copper and assist in eliminating bubbles. By setting the circular slideway 211 and the auxiliary rod 210, it assists in supporting the cavity arc-shaped block 201. After nitrogen enters the nitrogen pipe 302 on the mounting block 301, it enters the support rod 4 through the first air inlet hole 304 of the cavity ring 303 and the second air inlet hole 305 on the support rod 4. A sealing ring is provided between the cavity ring 303 and the support rod 4, so as to prevent the nitrogen pipe 302 from being wound around the support rod 4 when the support rod 4 rotates. Drag the gas delivery pipe 5 so that the connecting ring 307 is stuck between the positioning ring 306 and the nitrogen pipe 302, so that the positioning rod 309 is inserted into the positioning groove 308, and the corner of the positioning ring 306 is stuck to the positioning ring 306. With the help of the second gasket 311, the gas delivery pipe 5 and the nitrogen pipe 302 are sealed, so as to fix the gas delivery pipe 5 and the nitrogen pipe 302. Turn the release ring 310 so that the extrusion positioning rod 309 is retracted into the positioning groove 308, so that the gas delivery pipe 5 can be disassembled.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the relevant art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

Claims

1. A device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of a gas-permeable brick, comprising a mounting frame (1) fixedly connected to the upper end of a copper smelting furnace, characterized in that: The upper end of the mounting frame (1) is rotatably connected to a support rod (4), the lower end of the support rod (4) is provided with a replacement component (2) and a gas permeable brick (6), the upper end of the mounting frame (1) is provided with a connection component (3) and a gas pipe (5), the replacement component (2) comprises a cavity arc block (201) fixedly connected to the lower end of the support rod (4), the lower end of the cavity arc block (201) is fixedly connected to a fixing ring (202), the gas permeable brick (6) is inserted into the fixing ring (202), the inner arc surface of the fixing ring (202) is slidably inserted with a plurality of evenly distributed latches (203), and the latches (203) are inserted into the gas permeable brick (6).

2. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 1, characterized in that: The right end of the latch (203) is fixedly connected to a spring (204), and the other end of the spring (204) is fixed to a fixing ring (202).

3. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 2, characterized in that: The right end of the latch (203) is fixedly connected to a pull rope (205), the pull rope (205) passes through the fixing ring (202), the circular arc surface of the fixing ring (202) is slidably connected to a slip ring (206), and the slip ring (206) and the other end of the pull rope (205) are fixed.

4. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 3, characterized in that: A first sealing gasket (207) is provided between the air-permeable brick (6) and the cavity arc block (201), and a sliding surface (208) is provided at the lower end of the latch (203).

5. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 4, characterized in that: The lower end of the cavity arc block (201) is provided with three evenly distributed air-permeable bricks (6), and the arc surface of the support rod (4) is fixedly connected to a sprocket (209) of an external chain.

6. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 5, characterized in that: An auxiliary rod (210) is fixedly connected to the left side of the upper end of the cavity arc block (201), and a circular slideway (211) is provided on a side of the mounting frame (1) close to the auxiliary rod (210), and the auxiliary rod (210) slides on the circular slideway (211).

7. The device for removing bubbles from molten copper by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 6, characterized in that: The connection assembly (3) comprises a mounting block (301) fixedly connected to the upper end of the mounting frame (1); a nitrogen pipe (302) for external nitrogen is fixedly connected to the left end of the mounting block (301); a cavity ring (303) is rotatably connected to the arc surface of the support rod (4); the cavity ring (303) is fixed to the nitrogen pipe (302); a first air inlet hole (304) is provided on the inner arc surface of the cavity ring (303); and a second air inlet hole (305) is provided on the arc surface of the support rod (4).

8. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 7, characterized in that: The arc surface of the nitrogen pipe (302) is fixedly connected to a positioning ring (306), the arc surface of the gas delivery pipe (5) is fixedly connected to a connecting ring (307), a side of the positioning ring (306) close to the connecting ring (307) is provided with a plurality of evenly distributed positioning grooves (308), and a left end of the connecting ring (307) is fixedly connected to a plurality of evenly distributed positioning rods (309).

9. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 7, characterized in that: The positioning rod (309) passes through the positioning ring (306); the positioning rod (309) is flexible; and a second sealing gasket (311) is provided between the positioning ring (306) and the gas delivery pipe (5).

10. The device for removing bubbles from copper liquid by inputting nitrogen gas from the bottom of the air-permeable brick according to claim 9, characterized in that: The arc surface of the positioning ring (306) is threadedly connected with a release ring (310), and the release ring (310) is compatible with the positioning rod (309).

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