A multi-stage flue gas treatment device for flue gas settling chamber of blister copper refining

Abstract

The present invention belongs to the technical field of flue gas treatment, and discloses a multi-stage flue gas treatment device for a blister copper blowing flue gas settling chamber, comprising a flue gas settling bin, an air outlet pipe interconnected with the interior of the flue gas settling bin is fixed on the top surface of the flue gas settling bin, an air inlet pipe interconnected with the interior of the flue gas settling bin is fixed on the side wall of the flue gas settling bin, at least two layers of filter plates are arranged in the air inlet pipe, a nozzle for spraying liquid is installed on the top of the flue gas settling bin, a plurality of fan blades equidistantly distributed in a circular array are arranged in the flue gas settling bin, and a treatment mechanism for driving the fan blades, the treatment mechanism comprises a transverse support rod fixed to the inner wall of the flue gas settling bin, a gear 1 driven by an external motor is rotatably connected to the transverse support rod, an internal spline shaft rotatably connected to the transverse support rod is penetrated by the transverse support rod, a gear 2 meshing with the gear 1 is sleeved on the surface of the internal spline shaft, and an external spline shaft is penetrated by the internal spline shaft from top to bottom.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas treatment, and in particular is a multi-stage flue gas treatment device in a flue gas settling chamber of blister copper blowing. Background Art

[0002] Blister copper, also known as blister copper, is the copper produced by blowing the matte containing about 60% copper produced in the previous process. After blowing in the blowing furnace, it contains about 98.5% copper. If it is necessary to remove the remaining impurities, the impurities are further oxidized through fire refining, and the copper is reduced to 99.2%~99.7%. It can be cast into copper anodes for electrolytic refining, or cast into copper ingots for processing into plates, tubes, wires, strips and profiles.

[0003] Blister copper smelting produces flue gas. Existing flue gas treatment devices for blister copper smelting use alkaline solution to remove sulfur. Simply spraying the alkaline solution and relying on the flue gas to float upward on its own will make it difficult for the flue gas to fully contact with the alkaline solution, resulting in a small amount of sulfur-containing gas still being contained in the flue gas after being absorbed by the alkaline solution, which in turn causes the device to not fully treat the flue gas. Summary of the invention

[0004] In order to solve the problem of insufficient gas treatment mentioned in the above background technology, the present invention provides a multi-stage flue gas treatment device for a blister copper blowing flue gas settling chamber.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-stage flue gas treatment device for a blister copper blowing flue gas settling chamber, comprising a flue gas settling chamber, a flue gas settling chamber having an air outlet pipe interconnected with the interior thereof fixed to the top surface thereof, an air inlet pipe interconnected with the interior thereof fixed to the side wall thereof, at least two layers of filter plates being arranged in the air inlet pipe, a nozzle for spraying liquid being installed on the top of the flue gas settling chamber, a plurality of fan blades equidistantly distributed in a circular array being arranged in the flue gas settling chamber, and a processing mechanism for driving the fan blades;

[0006] The processing mechanism includes a transverse support rod fixed on the inner wall of the smoke settling bin, and the transverse support rod is rotatably connected to a gear 1 driven by an external motor. The transverse support rod is penetrated by an internal spline shaft rotatably connected to the transverse support rod, and the surface of the internal spline shaft is sleeved with a gear 2 meshing with gear 1. The internal spline shaft is penetrated by an external spline shaft from top to bottom, and the lower end of the external spline shaft is fixedly connected to a regular polygonal box body with an open upper surface, and the fan blades are rotatably connected to the regular polygonal box body.

[0007] Preferably, the processing mechanism also includes a worm fixed coaxially with the gear, a vertical rod is vertically fixed to the lower surface of the transverse support rod, a worm wheel meshing with the worm is rotatably connected to the vertical rod, and a driving rod coaxially fixed with the worm wheel, and the free end of the driving rod is rotatably connected to a sliding rod distributed vertically therewith.

[0008] Preferably, a telescopic rod is vertically fixed to the top surface of the inner wall of the smoke settling bin, a D-shaped frame is fixedly installed at the lower end of the telescopic rod, a D-shaped slide groove is opened on the side of the D-shaped frame close to the driving rod, and the sliding rod is located in the D-shaped slide groove.

[0009] Preferably, a bending rod is fixedly connected to the lower surface of the D-shaped frame, a sleeve shaft is fixedly connected to the free end of the bending rod, and the external spline shaft passes through the sleeve shaft and is rotatably connected thereto.

[0010] Preferably, a suction assembly is provided in the smoke settling bin, an outer annular sleeve is attached to the inner wall of the smoke settling bin, an inner annular sleeve is rotatably connected to the outer annular sleeve, and the fan blade is rotatably connected to the inner annular sleeve at a side away from the regular polygonal box body.

[0011] Preferably, at least two columns are vertically fixed to the bottom surface of the inner wall of the regular polygonal box body, a lower frame body penetrated by the columns is arranged in the regular polygonal box body, an upper frame body is arranged above the lower frame body, and a rack is fixedly connected between the lower frame body and the upper frame body.

[0012] Preferably, the number of the racks is the same as the fan blades and corresponds one to one, and a gear three is provided in the regular polygonal box, which is coaxially fixed with the fan blades and meshes with the racks.

[0013] Preferably, the inner wall of the smoke settling bin is fixedly connected with two symmetrically distributed L-shaped rods 1, and two symmetrically distributed L-shaped rods 2 located below the L-shaped rod 1, and the free ends of the two L-shaped rods 2 are fixed with the same annular limiter.

[0014] Preferably, a sewage discharge mechanism is provided in the smoke settling bin, and the sewage discharge mechanism includes an extension rod rotatably connected to the lower surface of the regular polygonal box body, a circular plate is fixed to the lower end of the extension rod, and a thickened plate located below the air inlet pipe is integrally fixed on the inner side wall of the smoke settling bin, and the upper surface of the thickened plate is inclined.

[0015] Preferably, a water outlet pipe that runs through the smoke settling bin is plugged into the thickened plate, a one-way valve 1 is installed on the water outlet pipe, an air intake pipe is plugged into the circular plate, a one-way valve 2 is installed on the air intake pipe, a hose is installed at the free end of the air intake pipe, and the other end of the hose passes through the side wall of the smoke settling bin and extends to the outside of the smoke settling bin.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By setting a processing mechanism to drive the fan blades to rotate, the smoke in the smoke settling bin can be more fully contacted with the alkaline solution. The processing mechanism can also drive the fan blades to move up and down without affecting the rotation of the fan blades, which can make the smoke flow in the smoke settling bin more chaotic, further improving the contact between the smoke and the alkaline solution, so that the smoke is fully treated before being discharged;

[0018] By setting the suction assembly, after the fan blades move downward to the preset position and are restricted by the annular limiter, all the fan blades will rotate to a horizontal state, and multiple fan blades, the outer annular sleeve, the inner annular sleeve, and the regular polygonal box body form a circular plate. When the fan blades in the horizontal state move upward, the smoke in the air intake pipe can be quickly sucked into the smoke settling bin, preventing the multi-layer filter plate from affecting the flow speed of the smoke;

[0019] By setting up a sewage discharge mechanism, it is convenient to discharge the sewage in the flue gas settling bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 4 It is a structural schematic diagram of the processing mechanism of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the suction assembly of the present invention;

[0025] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at D in the middle;

[0027] Figure 8 For the present invention Figure 1 Schematic diagram of the enlarged structure at E in the middle.

[0028] In the figure: 1. Smoke settling chamber; 2. Exhaust pipe; 3. Inlet pipe; 4. Fan blade; 5. Processing mechanism; 51. Horizontal support rod; 52. Gear 1; 53. Inner spline shaft; 54. Gear 2; 55. Outer spline shaft; 56. Regular polygon box; 57. Worm; 58. Vertical rod; 59. Worm wheel; 510. Driving rod; 511. Sliding rod; 512. Telescopic rod; 513. D-shaped frame; 514. D-shaped slide; 515. Bending rod ; 516, sleeve shaft; 6, suction assembly; 61, outer annular sleeve; 62, inner annular sleeve; 63, column; 64, lower frame; 65, upper frame; 66, rack; 67, gear three; 68, L-shaped rod one; 69, L-shaped rod two; 610, annular limiter; 7, sewage discharge mechanism; 71, extension rod; 72, circular plate; 73, thickened plate; 74, water outlet pipe; 75, one-way valve one; 76, suction pipe; 77, one-way valve two; 8, filter plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, the present invention provides a multi-stage flue gas treatment device for a blister copper blowing flue gas settling chamber, comprising a flue gas settling bin 1, a flue gas settling bin 1 having a top surface with an air outlet pipe 2 interconnected with the interior thereof fixed thereto, a flue gas settling bin 1 having a side wall with an air inlet pipe 3 interconnected with the interior thereof fixed thereto, at least two layers of filter plates 8 being arranged in the air inlet pipe 3, and a nozzle for spraying liquid being installed on the top of the flue gas settling bin 1;

[0031] The liquid is an alkaline solution used to react with sulfur dioxide in the flue gas. When the flue gas enters the flue gas settling bin 1 from the air inlet pipe 3, the multi-layer filter plate 8 can perform a multi-stage filtration on the flue gas, and the flue gas treated with the alkaline solution is discharged from the outlet pipe 2.

[0032] like Figure 1 As shown, a plurality of fan blades 4 equidistantly distributed in a circular array and a processing mechanism 5 for driving the fan blades 4 are arranged in the smoke settling bin 1;

[0033] like Figure 2 , Figure 3 , Figure 4As shown, the processing mechanism 5 includes a transverse support rod 51 fixed on the inner wall of the smoke settling bin 1, and a gear 1 52 driven by an external motor is rotatably connected to the transverse support rod 51. An internal spline shaft 53 rotatably connected to the transverse support rod 51 is penetrated by the transverse support rod 51, and a gear 2 54 meshing with the gear 1 52 is sleeved on the surface of the internal spline shaft 53. An external spline shaft 55 is penetrated from top to bottom of the internal spline shaft 53. The internal spline shaft 53 can drive the external spline shaft 55 to rotate, and the external spline shaft 55 can move in the vertical direction. The lower end of the external spline shaft 55 is fixedly connected to a regular polygonal box body 56 with an open upper surface, and the fan blade 4 is rotatably connected to the regular polygonal box body 56;

[0034] By adopting the above solution, the fan blade 4 can rotate without affecting its up and down movement.

[0035] The processing mechanism 5 also includes a worm 57 coaxially fixed with the gear 1 52, a vertical rod 58 is vertically fixed to the lower surface of the transverse support rod 51, a worm wheel 59 meshing with the worm 57 is rotatably connected to the vertical rod 58, and a driving rod 510 coaxially fixed with the worm wheel 59. In addition to being able to transmit, the worm 57 and the worm wheel 59 also have a self-locking function. When the worm 57 stops rotating, the D-shaped frame 513 will not move downward due to gravity, and there is a speed difference between the worm 57 and the vertical rod 58. The worm 57 rotates at the same speed as the external spline shaft 55 and the fan blade 4, and the rotation speed of the worm wheel 59 is relatively slow, so the speed at which the D-shaped frame 513, the external spline shaft 55 and the fan blade 4 move up and down will be relatively slow. The free end of the driving rod 510 is rotatably connected to a sliding rod 511 that is vertically distributed therewith. Since the sliding rod 511 is rotatably connected to the driving rod 510, when the driving rod 510 drives the sliding rod 511 to rotate, the friction between the sliding rod 511 and the inner wall of the D-shaped slide groove 514 can be reduced;

[0036] A telescopic rod 512 is vertically fixed to the top surface of the inner wall of the smoke settling bin 1, and a D-shaped frame 513 is fixedly installed at the lower end of the telescopic rod 512. The telescopic rod 512 is used to limit the moving path of the D-shaped frame 513. A D-shaped slide groove 514 is opened on the side of the D-shaped frame 513 close to the driving rod 510. The sliding rod 511 is located in the D-shaped slide groove 514. A bending rod 515 is fixedly connected to the lower surface of the D-shaped frame 513. The free end of the bending rod 515 is fixedly connected to a sleeve shaft 516, and the external spline shaft 55 passes through the sleeve shaft 516 and is rotatably connected thereto.

[0037] By setting the D-shaped slide groove 514, the driving rod 510 can drive the D-shaped frame 513 to move back and forth up and down when driving the sliding rod 511 to rotate, and after the D-shaped frame 513 moves upward to the extreme position, the sliding rod 511 will enter the semicircular groove of the D-shaped slide groove 514, causing the D-shaped frame 513 to stay at the highest position for a period of time.

[0038] like Figure 1 As shown, a suction assembly 6 is provided in the smoke settling bin 1 .

[0039] An outer annular sleeve 61 is attached to the inner wall of the smoke settling bin 1, and an inner annular sleeve 62 is rotatably connected to the outer annular sleeve 61. The side of the fan blade 4 away from the regular polygonal box body 56 is rotatably connected to the inner annular sleeve 62. By providing the inner annular sleeve 62, the friction between the outer annular sleeve 61 and the smoke settling bin 1 can be reduced.

[0040] At least two columns 63 are vertically fixed to the bottom surface of the inner wall of the regular polygonal box body 56. A lower frame body 64 is provided in the regular polygonal box body 56 and is penetrated by the columns 63. The lower frame body 64 can move up and down along the columns 63. An upper frame body 65 is provided above the lower frame body 64. A rack 66 is fixedly connected between the lower frame body 64 and the upper frame body 65.

[0041] The number of the racks 66 is the same as that of the blades 4 and corresponds one to one. A gear 3 67 is provided in the regular polygonal box 56 and is coaxially fixed with the blades 4 and meshes with the racks 66.

[0042] The inner wall of the smoke settling bin 1 is fixedly connected with two symmetrically distributed L-shaped rods 1 68 and two symmetrically distributed L-shaped rods 2 69 located below the L-shaped rod 1 68 . The free ends of the two L-shaped rods 2 69 are fixed with the same annular limiter 610 .

[0043] like Figure 1 As shown, a sewage discharge mechanism 7 is provided in the smoke settling bin 1 .

[0044] The sewage discharge mechanism 7 includes an extension rod 71 rotatably connected to the lower surface of the regular polygonal box body 56, and a circular plate 72 is fixed to the lower end of the extension rod 71. A thickened plate 73 located below the air inlet pipe 3 is integrally fixed to the inner wall of the smoke settling bin 1, and the upper surface of the thickened plate 73 is inclined. When the circular plate 72 is located above the thickened plate 73, the edge of the circular plate 72 is away from the inner wall of the smoke settling bin 1. When the circular plate 72 moves downward, the edge of the circular plate 72 will abut against the inner wall of the thickened plate 73, forming a closed space in the smoke settling bin 1.

[0045] A water outlet pipe 74 that runs through the smoke settling bin 1 is plugged into the thickened plate 73, and a one-way valve 1 75 is installed on the water outlet pipe 74. An air intake pipe 76 is plugged into the circular plate 72, and a one-way valve 2 77 is installed on the air intake pipe 76. A hose is installed at the free end of the air intake pipe 76, and the other end of the hose passes through the side wall of the smoke settling bin 1 and extends to the outside of the smoke settling bin 1.

[0046] The working principle and use process of the present invention:

[0047] The flue gas enters the flue gas settling bin 1 from the air inlet pipe 3, and the multi-layer filter plate 8 can perform a multi-stage filtration on the flue gas. The nozzle on the top of the flue gas settling bin 1 is opened to spray the alkaline solution, and the flue gas is discharged from the outlet pipe 2 after being treated by the alkaline solution.

[0048] The starting motor drives the gear 1 52 to rotate, and the gear 1 52 can drive the gear 2 54 meshing with it to rotate, and the gear 2 54 can drive the inner spline shaft 53 to rotate, and the inner spline shaft 53 can drive the outer spline shaft 55 to rotate, and the outer spline shaft 55 can drive the fan blade 4 to rotate through the regular polygonal box body 56 fixed at the lower end thereof, so as to stir the smoke and allow the smoke to fully contact with the alkaline solution;

[0049] When the gear 1 52 rotates, it can drive the worm 57 coaxially fixed thereto to rotate, and the worm 57 can drive the worm wheel 59 meshing therewith to rotate, and the worm wheel 59 can drive the driving rod 510 to rotate coaxially, and the driving rod 510 can drive the sliding rod 511 installed at one end thereof to rotate;

[0050] Since the sliding rod 511 is located in the D-shaped slide groove 514, when the sliding rod 511 moves in the arc groove of the D-shaped slide groove 514, the D-shaped frame 513 is in a stationary state. When the sliding rod 511 rotates to the horizontal groove of the D-shaped slide groove 514, it can drive the D-shaped frame 513 to move up and down reciprocatingly. The D-shaped frame 513 can drive the external spline shaft 55 to move up and down reciprocatingly through the bending rod 515 and the sleeve shaft 516. The external spline shaft 55 can drive the fan blade 4 to move up and down reciprocatingly through the regular polygonal box body 56.

[0051] Thus, the fan blades 4 can not only be in a rotating state to stir the flue gas, but also move up and down, making the flow of gas in the flue gas settling bin 1 more chaotic, so that the gas can be in contact with the alkaline solution more fully, thereby improving the treatment effect of the flue gas;

[0052] The fan blade 4 will follow the D-shaped frame 513 and stay for a while after moving upward to the limit position, and then move downward;

[0053] In the initial state, the fan blades 4 are in an inclined state. When the fan blades 4 move downward to a preset position and are restricted by the annular stopper 610, all the fan blades 4 rotate to a horizontal state. The multiple fan blades 4, the outer annular sleeve 61, the inner annular sleeve 62, and the regular polygonal box body 56 form a circular plate. When the fan blades 4 in the horizontal state move upward, the smoke in the air inlet pipe 3 can be quickly sucked into the smoke settling bin 1 to prevent the multi-layer filter plate 8 from affecting the flow speed of the smoke.

[0054] When the fan blade 4 moves upward to the preset position, the upper frame 65, the rack 66, and the lower frame 64 are blocked by the L-shaped rod 1 68, causing the upper frame 65, the rack 66, and the lower frame 64 to move downward relative to the regular polygon box 56, and the rack 66 can drive the gear 3 67 meshing with it to rotate accordingly, and the gear 3 67 can drive the fan blade 4 coaxially fixed thereto to rotate into an inclined state, so that the smoke floats upward;

[0055] In use, when the fan blade 4 moves from bottom to top, it is in a horizontal state, acting as a piston plate to suck the smoke upwards, speeding up the flow of the smoke. When the fan blade 4 moves to the highest point, it is in an inclined state, the smoke floats upwards, and the fan blade 4 will stop at the highest point and rotate for a while, and then continue to move downwards after the smoke sucked up is processed;

[0056] When the regular polygonal box body 56 moves up and down, the circular plate 72 can be driven to move up and down by driving the extension rod 71. When the circular plate 72 moves downward so that its edge abuts against the inner wall of the thickened plate 73, a closed space is formed between the smoke settling bin 1 and the circular plate 72. The circular plate 72 continues to move downward, squeezing out the sewage at the bottom of the smoke settling bin 1 through the outlet pipe 74.

[0057] When the circular plate 72 moves upward, it can inhale external air through the air intake pipe 76 and will not inhale the gas in the smoke settling chamber 1 downward.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage flue gas treatment device for a blister copper converting flue gas settling chamber, comprising a flue gas settling chamber (1), characterized in that: The top surface of the smoke settling bin (1) is fixed with an air outlet pipe (2) interconnected with the interior thereof, the side wall of the smoke settling bin (1) is fixed with an air inlet pipe (3) interconnected with the interior thereof, at least two layers of filter plates (8) are arranged in the air inlet pipe (3), a nozzle for spraying liquid is installed on the top of the smoke settling bin (1), a plurality of fan blades (4) equidistantly distributed in a circular array are arranged in the smoke settling bin (1), and a processing mechanism (5) for driving the fan blades (4); The processing mechanism (5) comprises a transverse support rod (51) fixed on the inner wall of the smoke settling bin (1), the transverse support rod (51) being rotatably connected to a gear 1 (52) driven by an external motor, the transverse support rod (51) being penetrated by an internal spline shaft (53) rotatably connected thereto, the surface of the internal spline shaft (53) being sleeved with a gear 2 (54) meshing with the gear 1 (52), the internal spline shaft (53) being penetrated by an external spline shaft (55) from top to bottom, the lower end of the external spline shaft (55) being fixedly connected to a regular polygonal box body (56) having an open upper surface, and the fan blade (4) being rotatably connected to the regular polygonal box body (56); The processing mechanism (5) further comprises a worm (57) coaxially fixed to the gear 1 (52); a vertical rod (58) is vertically fixed to the lower surface of the transverse support rod (51); a worm wheel (59) meshing with the worm (57) is rotatably connected to the vertical rod (58); and a driving rod (510) coaxially fixed to the worm wheel (59); a free end of the driving rod (510) is rotatably connected to a sliding rod (511) vertically distributed therewith; A telescopic rod (512) is vertically fixed to the top surface of the inner wall of the smoke settling bin (1); a D-shaped frame (513) is fixedly installed at the lower end of the telescopic rod (512); a D-shaped slide groove (514) is provided on a side of the D-shaped frame (513) close to the driving rod (510); and the sliding rod (511) is located in the D-shaped slide groove (514); A bending rod (515) is fixedly connected to the lower surface of the D-shaped frame (513); a sleeve shaft (516) is fixedly connected to the free end of the bending rod (515); and the external spline shaft (55) passes through the sleeve shaft (516) and is rotatably connected thereto; A suction assembly (6) is provided in the smoke settling bin (1).

2. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 1, characterized in that: An outer annular sleeve (61) is fitted onto the inner wall of the smoke settling chamber (1), an inner annular sleeve (62) is rotatably connected inside the outer annular sleeve (61), and a side of the fan blade (4) away from the regular polygonal box body (56) is rotatably connected to the inner annular sleeve (62).

3. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 2 is characterized in that: At least two upright posts (63) are vertically fixed to the bottom surface of the inner wall of the regular polygonal box body (56); a lower frame body (64) penetrated by the upright posts (63) is arranged inside the regular polygonal box body (56); an upper frame body (65) is arranged above the lower frame body (64); and a rack (66) is fixedly connected between the lower frame body (64) and the upper frame body (65).

4. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 3 is characterized in that: The number of the racks (66) is the same as the number of the fan blades (4) and corresponds one to one. A gear three (67) is arranged in the regular polygonal box (56) and is coaxially fixed with the fan blades (4) and meshes with the racks (66).

5. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 4 is characterized in that: The inner wall of the smoke settling bin (1) is fixedly connected with two symmetrically distributed L-shaped rods (68), and two symmetrically distributed L-shaped rods (69) are located below the L-shaped rod (68), and the free ends of the two L-shaped rods (69) are fixed with the same annular stopper (610).

6. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 5 is characterized by: A sewage discharge mechanism (7) is arranged in the smoke settling bin (1), the sewage discharge mechanism (7) comprising an extension rod (71) rotatably connected to the lower surface of a regular polygonal box body (56), a circular plate (72) being fixed to the lower end of the extension rod (71), and a thickened plate (73) located below the air inlet pipe (3) being integrally fixed to the inner side wall of the smoke settling bin (1), and an upper surface of the thickened plate (73) being inclined.

7. The multi-stage flue gas treatment device for the blister copper converting flue gas settling chamber according to claim 6, characterized in that: The thickened plate (73) is plugged with a water outlet pipe (74) that passes through the smoke settling bin (1), and a one-way valve (75) is installed on the water outlet pipe (74). The circular plate (72) is plugged with an air intake pipe (76), and a one-way valve (77) is installed on the air intake pipe (76). A hose is installed at the free end of the air intake pipe (76), and the other end of the hose passes through the side wall of the smoke settling bin (1) and extends to the outside of the smoke settling bin (1).

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