Waste gas purification treatment device for metal smelting furnace

Abstract

The invention relates to the technical field of waste gas purification, and discloses a metal smelting furnace waste gas purification treatment device which comprises a reaction tower, a gas inlet is formed in the lower side of the reaction tower, a gas outlet is formed in the top of the reaction tower, a plurality of filler boxes are arranged in the reaction tower, and a spraying pipe is arranged on the upper side of each filler box; a demister is arranged at one end, close to the gas outlet, of the reaction tower. The cleaning mechanism is arranged, the first cleaning base and the second cleaning base are arranged on the supporting frame, the first cleaning base and the second cleaning base are driven by the walking base to slide in gaps of the demister blades, stains on the surfaces of the demister blades can be wiped off through the first cleaning base and the second cleaning base, and the cleaning efficiency is improved through cooperation with a first nozzle and a second nozzle. In addition, the surface of the demister blade can be washed in the wiping process, and compared with a pure washing and cleaning mode, the technical scheme can more effectively remove stains on the surface of the demister blade.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification, and in particular to a waste gas purification treatment device for a metal smelting furnace. Background Art

[0002] Metal smelting furnace is a kind of melting furnace. According to different heating methods, it can be divided into electric melting furnace, fuel melting furnace, etc. A large amount of waste gas will be generated during the use of metal smelting furnace. There are three main sources of waste gas: 1. Fuel combustion: For furnaces that use fuel as energy, such as coal, natural gas, oil, etc., a large amount of combustion waste gas will be generated during the combustion process, including smoke, sulfur dioxide, nitrogen oxides, etc.; 2. Raw material decomposition and volatilization: The heated raw materials will decompose or volatilize at high temperatures, releasing various gases and steam. For example, some ores contain elements such as sulfur and carbon, which will generate sulfur dioxide, carbon monoxide, etc. during the smelting process; 3. Chemical reaction: Under the high temperature environment in the furnace, chemical reactions may occur between raw materials or between raw materials and the atmosphere in the furnace to produce new gas products. For example, in the process of metal smelting, metal reacts with oxygen, nitrogen, etc. in the furnace gas to generate corresponding oxides, nitrides and other gases.

[0003] For fuel furnaces, a large amount of combustion waste gas will be generated during use, which has the characteristics of high temperature, large smoke and dust, and complex composition. The conventional treatment method is: waste heat recovery + dust removal + deep purification, that is, the waste heat of the waste gas is first recovered through a heat exchanger to reduce its temperature, and then it is dusted through equipment such as bag dust collectors, and finally the waste gas is deeply purified through a spray tower. The waste gas is fully in contact with the washing liquid and the catalyst in the packing layer in the spray tower, which can effectively remove impurities such as acidic gases and some organic pollutants in the waste gas. Since the waste gas after washing contains a large amount of water mist, the waste gas needs to be treated by a demister before it can enter the next environment for treatment.

[0004] During the use of existing demisters, a large amount of dust, oil and other impurities will adhere to the surface of the demister blades, so they need to be cleaned regularly. The conventional cleaning method is to flush the demister blades with a nozzle containing detergent. Since the shape of the demister blades is relatively complex, if the demister blades are cleaned simply by flushing, there will be a large number of cleaning dead corners, and the cleaning effect is average. Summary of the invention

[0005] The present invention provides a metal smelting furnace waste gas purification treatment device, which has the beneficial effect of being able to clean the demister more thoroughly, and solves the problem mentioned in the above background technology that due to the complex shape of the demister blades, if the demister blades are cleaned simply by flushing, there will be a large number of cleaning dead corners and the cleaning effect is general.

[0006] The present invention provides the following technical solution: a metal smelting furnace waste gas purification treatment device, comprising a reaction tower, an air inlet is provided at the lower side of the reaction tower, and an air outlet is provided at the top of the reaction tower, a plurality of stuffing boxes are provided inside the reaction tower, and a spray pipe is provided at the upper side of each stuffing box, and a demister is provided at one end of the reaction tower close to the air outlet;

[0007] The defogger includes a first fixed seat and a second fixed seat, and defogger blades are provided on the upper sides of the first fixed seat and the second fixed seat, one end of the defogger blade is fixedly connected to the first fixed seat, and the other end of the defogger blade is fixedly connected to the second fixed seat, a cleaning mechanism for cleaning the defogger blade is provided between the first fixed seat and the second fixed seat, the cleaning mechanism includes a walking seat, and a supporting frame is provided on the walking seat, a first cleaning seat is provided on the supporting frame, and second cleaning seats are provided at both ends of the first cleaning seat, and a wastewater collecting seat is provided on the lower side of the defogger blade, and the wastewater collecting seat is fixedly connected to the walking seat.

[0008] As an optional solution of the metal smelting furnace waste gas purification treatment device described in the present invention, the support frame includes a connecting seat, first connecting rods are provided on both sides of the connecting seat, and the first cleaning seat is fixed to the outer surface of the connecting seat.

[0009] As an optional solution of the metal smelting furnace waste gas purification treatment device described in the present invention, a filter plate is provided in the wastewater collecting seat, and the filter plate is elastically connected to the wastewater collecting seat through a first return spring.

[0010] As an optional solution of the metal smelting furnace exhaust gas purification treatment device described in the present invention, wherein: a confluence groove is provided on the inner wall of the reaction tower, the confluence groove is located at the lower side of the wastewater collecting seat, and a corrugated plate is provided in the confluence groove, and a top rod is provided at one end of the wastewater collecting seat close to the confluence groove, the top rod is slidably connected to the wastewater collecting seat, and the top rod is in conflict with the bottom of the filter plate, and a side of the top rod close to the filter plate is provided with an inclined surface;

[0011] When the wastewater collecting seat moves driven by the walking seat, the push rod moves horizontally back and forth under the push of the wave plate, and the filter plate moves up and down back and forth under the push of the push rod.

[0012] As an optional solution of the exhaust gas purification treatment device for a metal smelting furnace described in the present invention, wherein: the second cleaning seat is elastically connected to the first connecting rod through a second return spring, and a plurality of pins are provided on the filter plate, and the positions and quantities of the pins correspond one to one with the second cleaning seat;

[0013] The top head will intermittently interfere with the second cleaning seat during the up and down reciprocating movement of the filter plate, thereby prompting the second cleaning seat to slide along the first connecting rod.

[0014] As an optional scheme of the metal smelting furnace waste gas purification treatment device described in the present invention, wherein: the first connecting rod is a hollow structure, and a plurality of first nozzles are provided on the first connecting rod, and the second nozzles are symmetrically provided on the connecting seat, the second nozzle is elastically connected to the connecting seat through a torsion spring, and the second nozzle is connected to the first connecting rod through a pipeline, and an extension column is provided at one end of the second cleaning seat close to the connecting seat, and when the second cleaning seat approaches the connecting seat, the extension column conflicts with the second nozzle and causes the second nozzle to deflect.

[0015] As an optional solution of the metal smelting furnace exhaust gas purification treatment device described in the present invention, wherein: a connecting plate is provided on the walking seat, the end of the connecting plate is slidably connected to the reaction tower, and a second connecting rod is provided on the connecting plate. The position and number of the second connecting rod correspond one-to-one to the first connecting rod, and the first connecting rod located on the upper side of the connecting seat is fixedly connected to the corresponding second connecting rod respectively.

[0016] As an optional solution of the metal smelting furnace exhaust gas purification treatment device described in the present invention, wherein: a cleaning brush is provided on the filter plate, and the cleaning brush is elastically connected to the filter plate through a rebound spring, a plurality of limit blocks are provided at the upper end of the wastewater collecting seat, and the position and number of the limit blocks correspond one-to-one to the cleaning brush, and the upper end of the cleaning brush is provided with an inclined surface.

[0017] As an optional solution of the metal smelting furnace exhaust gas purification treatment device described in the present invention, a partition is provided at the second fixing seat, and a plurality of third nozzles are provided on the partition.

[0018] As an optional solution of the metal smelting furnace exhaust gas purification treatment device described in the present invention, wherein: a traveling motor is provided on the traveling seat, a roller is provided on the output shaft of the traveling motor, and a guide rail matching the roller is provided on the reaction tower.

[0019] The present invention has the following beneficial effects:

[0020] 1. A metal smelting furnace exhaust gas purification treatment device is provided with a cleaning mechanism, which includes a walking seat and a supporting frame. A first cleaning seat and a second cleaning seat are provided on the supporting frame. Driven by the walking seat, the first cleaning seat and the second cleaning seat slide in the gap between the demister blades. The first cleaning seat and the second cleaning seat can be used to wipe off the stains on the surface of the demister blades. In combination with the first nozzle and the second nozzle, the surface of the demister blades can also be rinsed during the wiping process. Compared with a simple rinsing cleaning method, this technical solution can more effectively remove stains on the surface of the demister blades.

[0021] 2. In a metal smelting furnace exhaust gas purification treatment device, in order to reduce the risk of the filter plate being blocked, the filter plate in the technical solution is movable, and a push rod for adjusting the filter plate is provided at one end of the wastewater collecting seat, and correspondingly, a wave plate is provided in the confluence trough, and when the wastewater collecting seat moves together with the walking seat, the push rod reciprocates horizontally under the push of the wave plate, thereby pushing the filter plate to reciprocate up and down, and a cleaning brush that can slide on the surface of the filter plate is provided on the filter plate, and the filter plate can be pushed to reciprocate up and down through the push head, and the filter plate will drive the cleaning brush to contact with the limit block during the upward movement, and the limit block can cause the cleaning brush to overcome the resistance of the rebound spring and slide on the filter plate by contacting with the inclined surface on the cleaning brush, thereby achieving the purpose of cleaning the filter plate.

[0022] 3. This metal smelting furnace waste gas purification treatment device is provided with a support frame composed of a connecting seat and a first connecting rod. The second cleaning seat is elastically connected to the first connecting rod. When the filter plate moves upward, it will drive the top head to move together. The second cleaning seat can be pushed to slide along the first connecting rod through the top head. In this way, during the movement of the cleaning mechanism, the second cleaning seat can also reciprocate back and forth, which effectively improves the cleaning effect of the second cleaning seat.

[0023] 4. This kind of metal smelting furnace waste gas purification treatment device is provided with a connecting seat with a second nozzle, the second nozzle is elastically connected to the connecting seat, and an extension column for adjusting the second nozzle is provided at the end of the second cleaning seat. When the second cleaning seat is close to the connecting seat, the extension column contacts the protrusion on the second nozzle and causes the second nozzle to deflect, thereby achieving the purpose of adjusting the spraying angle of the second nozzle and effectively improving the cleaning effect of the cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the demister of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the wastewater collection seat of the present invention.

[0027] Figure 4 It is a schematic diagram of the partition structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the internal structure of the reaction tower of the present invention.

[0029] Figure 6 It is the front view of the demister of the present invention.

[0030] Figure 7 It is a schematic diagram of the internal structure of the first cleaning seat and the second cleaning seat of the present invention.

[0031] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure in the middle.

[0032] In the figure: 1, reaction tower; 101, air inlet; 102, air outlet; 2, stuffing box; 3, demister; 301, first fixed seat; 302, second fixed seat; 303, demister blade; 4, spray pipe; 5, walking seat; 501, connecting plate; 502, second connecting rod; 6, support frame; 601, connecting seat; 602, first connecting rod; 603, first nozzle; 604, second nozzle; 605, torsion spring ; 7. First cleaning seat; 8. Second cleaning seat; 801. Extension column; 9. Wastewater collection seat; 901. Limit block; 10. Filter plate; 11. First return spring; 12. Confluence trough; 13. Corrugated plate; 14. Push rod; 15. Second return spring; 16. Push head; 17. Cleaning brush; 18. Partition; 19. Third nozzle; 20. Rebound spring; 21. Travel motor; 22. Roller; 23. Guide rail. DETAILED DESCRIPTION

[0033] 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.

[0034] For example, see Figures 1 to 8 The present invention discloses a metal smelting furnace waste gas purification treatment device, comprising a reaction tower 1, an air inlet 101 is provided at the lower side of the reaction tower 1, and an air outlet 102 is provided at the top of the reaction tower 1, a plurality of stuffing boxes 2 are provided inside the reaction tower 1, and a spray pipe 4 is provided at the upper side of each stuffing box 2, and a demister 3 is provided at one end of the reaction tower 1 close to the air outlet 102;

[0035] The defogger 3 includes a first fixed seat 301 and a second fixed seat 302, and a defogger blade 303 is provided on the upper side of the first fixed seat 301 and the second fixed seat 302, one end of the defogger blade 303 is fixedly connected to the first fixed seat 301, and the other end of the defogger blade 303 is fixedly connected to the second fixed seat 302, a cleaning mechanism for cleaning the defogger blade 303 is provided between the first fixed seat 301 and the second fixed seat 302, the cleaning mechanism includes a walking seat 5, and a supporting frame 6 is provided on the walking seat 5, a first cleaning seat 7 is provided on the supporting frame 6, and second cleaning seats 8 are provided at both ends of the first cleaning seat 7, a wastewater collecting seat 9 is provided on the lower side of the defogger blade 303, and the wastewater collecting seat 9 is fixedly connected to the walking seat 5.

[0036] The first fixing seat 301 and the second fixing seat 302 are both fixedly connected to the reaction tower 1. The exhaust gas enters the reaction tower 1 through the air inlet 101 and then flows out through the air outlet 102. In this process, the exhaust gas passes through the stuffing box 2. A catalyst is arranged in the stuffing box 2. At the same time, the detergent sprayed from the spray pipe 4 can effectively remove impurities in the exhaust gas. The exhaust gas can be defogged by the demister 3. In order to ensure the normal operation of the demister 3, the demister 3 needs to be cleaned regularly. A demister 3 is arranged in the reaction tower 1. The cleaning mechanism for cleaning includes a walking seat 5. Driven by the walking seat 5, the first cleaning seat 7 and the second cleaning seat 8 slide in the gap of the defogger blade 303. The first cleaning seat 7 and the second cleaning seat 8 can wipe off the stains on the surface of the defogger blade 303. In combination with the first nozzle 603 and the second nozzle 604, the surface of the defogger blade 303 can also be rinsed during the wiping process. Compared with the simple rinsing cleaning method, the present technical solution can more effectively remove the stains on the surface of the defogger blade 303.

[0037] Example 2: This example is an explanation based on Example 1. For details, please refer to Figures 1 to 8 The support frame 6 includes a connecting seat 601 , first connecting rods 602 are provided on both sides of the connecting seat 601 , and the first cleaning seat 7 is fixed on the outer surface of the connecting seat 601 .

[0038] A filter plate 10 is provided in the wastewater collection seat 9 , and the filter plate 10 is elastically connected to the wastewater collection seat 9 via a first return spring 11 .

[0039] A confluence groove 12 is provided on the inner wall of the reaction tower 1. The confluence groove 12 is located at the lower side of the wastewater collecting seat 9, and a corrugated plate 13 is provided in the confluence groove 12. A top rod 14 is provided at one end of the wastewater collecting seat 9 close to the confluence groove 12. The top rod 14 is slidably connected to the wastewater collecting seat 9, and the top rod 14 contacts the bottom of the filter plate 10. A side of the top rod 14 close to the filter plate 10 is provided with an inclined surface;

[0040] When the wastewater collecting seat 9 moves driven by the traveling seat 5 , the push rod 14 moves horizontally back and forth under the push of the wave plate 13 , and the filter plate 10 moves up and down back and forth under the push of the push rod 14 .

[0041] The second cleaning seat 8 is elastically connected to the first connecting rod 602 through the second return spring 15. The filter plate 10 is provided with a plurality of pins 16, and the positions and numbers of the pins 16 correspond to the second cleaning seat 8 one by one.

[0042] The top head 16 will intermittently interfere with the second cleaning seat 8 during the up and down reciprocating motion of the filter plate 10 , thereby causing the second cleaning seat 8 to slide along the first connecting rod 602 .

[0043] The cleaning mechanism will generate a large amount of sewage when working. If it is not treated, the sewage will directly drip onto the stuffing box 2, thereby blocking the pores on the stuffing box 2. For this reason, the present technical solution is provided with a wastewater collection seat 9 on the lower side of the demister blade 303, and a filter plate 10 is provided in the wastewater collection seat 9 for filtering the sewage. Correspondingly, a confluence groove 12 is also provided on the inner wall of the reaction tower 1, and the sewage collected by the wastewater collection seat 9 will flow into the confluence groove 12, and then flow out of the reaction tower 1 through the confluence groove 12;

[0044] During actual use, the lower end of the demister blade 303 is the first to come into contact with the exhaust gas, so more dust will gather on the lower side of the demister blade 303. In order to improve the cleaning effect of the cleaning mechanism, the present technical solution has specially designed the support frame 6. The support frame 6 is composed of a connecting seat 601 and a first connecting rod 602. The second cleaning seat 8 is elastically connected to the first connecting rod 602. When the filter plate 10 moves upward, it will drive the top head 16 to move together. The top head 16 can push the second cleaning seat 8 to slide along the first connecting rod 602. In this way, during the movement of the cleaning mechanism, the second cleaning seat 8 can also reciprocate back and forth, which effectively improves the cleaning effect of the second cleaning seat 8.

[0045] Example 3: This example is an explanation based on Example 1. For details, please refer to Figures 1 to 8 The first connecting rod 602 is a hollow structure, and a plurality of first nozzles 603 are provided on the first connecting rod 602. The second nozzles 604 are symmetrically provided on the connecting seat 601. The second nozzles 604 are elastically connected to the connecting seat 601 through a torsion spring 605, and the second nozzles 604 are connected to the first connecting rod 602 through a pipeline. An extension column 801 is provided at one end of the second cleaning seat 8 close to the connecting seat 601. When the second cleaning seat 8 moves closer to the connecting seat 601, the extension column 801 conflicts with the second nozzle 604 and causes the second nozzle 604 to deflect.

[0046] A connecting plate 501 is provided on the walking seat 5, and the end of the connecting plate 501 is slidably connected to the reaction tower 1. A second connecting rod 502 is provided on the connecting plate 501. The position and number of the second connecting rod 502 correspond one-to-one to the first connecting rod 602. The first connecting rod 602 located on the upper side of the connecting seat 601 is fixedly connected to the corresponding second connecting rod 502 respectively.

[0047] Openings for exposing the second nozzle 604 are provided on the connecting seat 601 and the first cleaning seat 7. Correspondingly, an opening for exposing the first nozzle 603 is also provided on the second cleaning seat 8. The second nozzle 604 is elastically connected to the connecting seat 601. An extension column 801 for adjusting the second nozzle 604 is provided at the end of the second cleaning seat 8. When the second cleaning seat 8 moves closer to the connecting seat 601, the extension column 801 contacts the protrusion on the second nozzle 604 and causes the second nozzle 604 to deflect. In this way, the spraying angle of the second nozzle 604 can be adjusted, thereby effectively improving the cleaning effect of the cleaning mechanism.

[0048] The first connecting rod 602 is a hollow structure, and a joint for an external water pump is provided on the first connecting rod 602 . When flushing, water flows into the first connecting rod 602 through the joint, and then enters the second nozzle 604 through the pipe, and finally achieves the effect of being sprayed out through the first nozzle 603 and the second nozzle 604 .

[0049] Example 4: This example is an explanation based on Example 1. For details, please refer to Figures 1 to 8 A cleaning brush 17 is provided on the filter plate 10, and the cleaning brush 17 is elastically connected to the filter plate 10 through a rebound spring 20. A plurality of limit blocks 901 are provided at the upper end of the wastewater collecting seat 9, and the positions and quantities of the limit blocks 901 correspond one to one with the cleaning brush 17. An inclined surface is provided at the upper end of the cleaning brush 17.

[0050] A partition plate 18 is disposed at the second fixing seat 302 , and a plurality of third nozzles 19 are disposed on the partition plate 18 .

[0051] A traveling motor 21 is disposed on the traveling seat 5 , a roller 22 is disposed on the output shaft of the traveling motor 21 , and a guide rail 23 matched with the roller 22 is disposed on the reaction tower 1 .

[0052] In order to reduce the risk of the filter plate 10 being blocked, the filter plate 10 in the present technical solution is movable, and a push rod 14 for adjusting the filter plate 10 is provided at one end of the wastewater collecting seat 9. Correspondingly, a wave plate 13 is provided in the confluence groove 12. When the wastewater collecting seat 9 moves together with the walking seat 5, the push rod 14 reciprocates horizontally under the push of the wave plate 13, thereby pushing the filter plate 10 to reciprocate up and down. A cleaning brush 17 that can slide on the surface of the filter plate 10 is provided on the filter plate 10, and the filter plate 10 can be pushed to reciprocate up and down by the push head 16. In the process of the upward movement of the filter plate 10, the cleaning brush 17 will be driven to conflict with the limit block 901. The limit block 901 can cause the cleaning brush 17 to overcome the resistance of the rebound spring 20 and slide on the filter plate 10 by conflicting with the inclined surface on the cleaning brush 17, thereby achieving the purpose of cleaning the filter plate 10;

[0053] A partition 18 is provided at the second fixed seat 302. The position and number of the partition 18 are in a one-to-one correspondence with the demister blades 303. The partition 18 is a hollow structure. A plurality of third nozzles 19 are provided on the partition 18. The cleaning mechanism entering the gap of the partition 18 can be cleaned by the third nozzles 19 to improve the cleaning effect of the cleaning mechanism. The walking seat 5 can move along the guide rail 23 driven by the walking motor 21.

[0054] 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.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A metal smelting furnace waste gas purification treatment device, comprising a reaction tower (1), wherein the lower side of the reaction tower (1) is provided with an air inlet (101), and the top of the reaction tower (1) is provided with an air outlet (102), characterized in that: A plurality of stuffing boxes (2) are provided inside the reaction tower (1), and a spray pipe (4) is provided on the upper side of each stuffing box (2); a demister (3) is provided at one end of the reaction tower (1) close to the gas outlet (102); The demister (3) comprises a first fixed seat (301) and a second fixed seat (302), and a demister blade (303) is provided on the upper side of the first fixed seat (301) and the second fixed seat (302), one end of the demister blade (303) is fixedly connected to the first fixed seat (301), and the other end of the demister blade (303) is fixedly connected to the second fixed seat (302), a cleaning mechanism for cleaning the demister blade (303) is provided between the first fixed seat (301) and the second fixed seat (302), the cleaning mechanism comprises a walking seat (5), and a supporting frame (6) is provided on the walking seat (5), a first cleaning seat (7) is provided on the supporting frame (6), and second cleaning seats (8) are provided at both ends of the first cleaning seat (7), and a wastewater collecting seat (9) is provided on the lower side of the demister blade (303), and the wastewater collecting seat (9) is fixedly connected to the walking seat (5).

2. A metal smelting furnace exhaust gas purification treatment device according to claim 1, characterized in that: The support frame (6) comprises a connecting seat (601), first connecting rods (602) are provided on both sides of the connecting seat (601), and the first cleaning seat (7) is fixed on the outer surface of the connecting seat (601).

3. A metal smelting furnace exhaust gas purification treatment device according to claim 2, characterized in that: A filter plate (10) is provided in the wastewater collection seat (9), and the filter plate (10) is elastically connected to the wastewater collection seat (9) via a first return spring (11).

4. A metal smelting furnace exhaust gas purification treatment device according to claim 3, characterized in that: The reaction tower (1) is provided with a confluence groove (12) on the inner wall thereof, the confluence groove (12) being located at the lower side of the wastewater collecting seat (9), and a wave plate (13) being provided inside the confluence groove (12), and a top rod (14) being provided at one end of the wastewater collecting seat (9) close to the confluence groove (12), the top rod (14) being slidably connected to the wastewater collecting seat (9), and the top rod (14) being in contact with the bottom of the filter plate (10), and a side of the top rod (14) close to the filter plate (10) being provided with an inclined surface; When the wastewater collecting seat (9) moves driven by the walking seat (5), the push rod (14) moves horizontally back and forth under the push of the wave plate (13), and the filter plate (10) moves up and down back and forth under the push of the push rod (14).

5. A metal smelting furnace exhaust gas purification device according to claim 4, characterized in that: The second cleaning seat (8) is elastically connected to the first connecting rod (602) via a second return spring (15); a plurality of tops (16) are provided on the filter plate (10); the positions and numbers of the tops (16) correspond one to one with the second cleaning seat (8); The top head (16) will intermittently interfere with the second cleaning seat (8) during the up and down reciprocating movement of the filter plate (10), thereby causing the second cleaning seat (8) to slide along the first connecting rod (602).

6. The exhaust gas purification device for a metal smelting furnace according to claim 5, characterized in that: The first connecting rod (602) is a hollow structure, and a plurality of first nozzles (603) are provided on the first connecting rod (602); the second nozzles (604) are symmetrically provided on the connecting seat (601); the second nozzles (604) are elastically connected to the connecting seat (601) via a torsion spring (605), and the second nozzles (604) are connected to the first connecting rod (602) via a pipeline; an extension column (801) is provided at one end of the second cleaning seat (8) close to the connecting seat (601); when the second cleaning seat (8) approaches the connecting seat (601), the extension column (801) contacts the second nozzle (604) and causes the second nozzle (604) to deflect.

7. The exhaust gas purification device for a metal smelting furnace according to claim 1 is characterized in that: The walking seat (5) is provided with a connecting plate (501), the end of which is slidably connected to the reaction tower, and the connecting plate (501) is provided with a second connecting rod (502), the position and number of the second connecting rod (502) correspond one-to-one to the first connecting rod (602), and the first connecting rods (602) located on the upper side of the connecting seat (601) are respectively fixedly connected to the corresponding second connecting rods (502).

8. The exhaust gas purification device for a metal smelting furnace according to claim 3 is characterized in that: A cleaning brush (17) is provided on the filter plate (10), and the cleaning brush (17) is elastically connected to the filter plate (10) via a rebound spring (20); a plurality of limit blocks (901) are provided at the upper end of the wastewater collection seat (9), and the positions and numbers of the limit blocks (901) correspond one-to-one to the cleaning brush (17); and an inclined surface is provided at the upper end of the cleaning brush (17).

9. The exhaust gas purification device for a metal smelting furnace according to claim 1, characterized in that: A partition plate (18) is provided at the second fixed seat (302), and a plurality of third nozzles (19) are provided on the partition plate (18).

10. The exhaust gas purification device for a metal smelting furnace according to claim 1, characterized in that: A traveling motor (21) is provided on the traveling seat (5), a roller (22) is provided on the output shaft of the traveling motor (21), and a guide rail (23) matched with the roller (22) is provided on the reaction tower (1).

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