Purification equipment for treating roasting tar of cathode for aluminum

Abstract

The invention discloses purification equipment for treating cathode roasting tar for aluminum, and relates to the technical field of cathode roasting tar treatment. A filtering mechanism is arranged in the purification equipment body, and the filtering mechanism comprises a filtering grid; a negative pressure mechanism is arranged at the end, away from the air inlet filter opening, of the purification equipment body and comprises a negative pressure connecting frame, and a negative pressure fan module is rotationally arranged in the negative pressure connecting frame. And a spraying mechanism is arranged at the right end of the negative pressure mechanism, the spraying mechanism comprises a spraying box body, and a spraying round frame is rotationally arranged in the spraying box body. According to the purification equipment for treating the roasting tar of the cathode for the aluminum, multiple times of filtering is carried out through the filtering grating in the purification equipment body, separation and collection of tar substances are assisted, gas is conveyed into the spraying box body to be subjected to all-directional spraying degradation, meanwhile, the collected tar and used spraying liquid are cooled, and follow-up collection and treatment are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of cathode roasting tar treatment, in particular to purification equipment for treating cathode roasting tar for aluminum. Background Art

[0002] Aluminum cathode roasting is a key heat treatment process in the production of cathode carbon blocks for aluminum electrolytic cells. By controlling the temperature rise, the asphalt and carbon materials in the green body form a high-strength fixed carbon structure, while removing volatile matter and moisture, providing qualified conductive cathode materials for electrolytic cell operation. The main reason for the generation of tar-containing gas during the roasting process is closely related to the process characteristics and raw material composition. Tar-containing gas is formed due to factors such as binder pyrolysis, abnormal distillation layer, improper temperature control, or raw material characteristics and air flow velocity. Tar gas needs to be treated and purified so that it can be discharged after compliance.

[0003] The invention with the announcement number CN1821353B discloses a method and device for recycling and utilizing electrostatic tar from flue gas purification. When an electrostatic tar precipitator is used to capture tar in the flue gas of a closed roaster for purification, the tar captured by the electrostatic tar precipitator is sent to a container for precipitation treatment, so that the precipitated tar produces oil-water separation and impurity precipitation in the container, effectively draining the water and impurities therein, and then is transported by an oil pump to a tar tank that supplies tar to the combustion rack on the roaster, so as to be used as roasting fuel for the roaster in the roasting workshop.

[0004] The utility model with announcement number CN213913012U discloses a tar collection device for a carbon roasting flue gas purification cooling tower. When the tar in the tar collection bin is full, part of the tar begins to overflow into the auxiliary collection bin. At this time, the oil outlet pipe can be opened to discharge the tar in the tar collection bin. Since all the moisture enters the auxiliary collection bin, the purity of the tar collection bin can be ensured to be better and no observation is required.

[0005] However, the above-mentioned roasted tar treatment and purification device still has the following problems during actual use: although the purification tower is used to assist in the purification of tar, this type of purification tower occupies a large overall area when in use, and the treatment and purification efficiency is low. At the same time, when treating tar, the filter mechanism is sticky with tar substances, and it is easy to get clogged during long-term purification, affecting the treatment and separation effect. Moreover, it is difficult to collect tar substances and odorous impurities during the recovery process.

[0006] Therefore, we propose a purification device for treating cathode roasting tar for aluminum in order to solve the problems raised above. Summary of the Invention

[0007] The purpose of the present invention is to provide a purification device for treating cathode roasting tar for aluminum, in order to solve the problem that the existing purification tower is used to assist in the purification of tar, but this type of purification tower occupies a large overall area when in use, and the purification efficiency is low. At the same time, when treating tar, the filter mechanism is sticky with tar substances, which is prone to blockage during long-term purification, affecting the treatment and separation effect, and it is difficult to collect tar substances and odorous impurities during the recovery process.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a purification device for treating cathode roasted tar for aluminum, comprising a purification device body and an air inlet filter connected to the left end of the purification device body; and further comprising: The purification device body is provided with a filter mechanism inside, and the filter mechanism includes a filter grid, and the filter grid is arranged inside the purification device body in an equidistant manner; A negative pressure mechanism is provided at one end of the purification device body away from the air inlet filter, and the negative pressure mechanism includes a negative pressure connecting frame, and a negative pressure fan module is rotatably provided inside the negative pressure connecting frame; The right end of the negative pressure mechanism is provided with a spray mechanism, and the spray mechanism includes a spray box body, and a spray round frame is rotatably provided inside the spray box body.

[0009] Preferably, the filtering mechanism includes a positioning bracket, and the positioning bracket is arranged at the four corners of the filter grille arranged at equal distances, and the outer ends of the positioning brackets at the four corners are fixedly connected to the inner wall of the purification equipment body, and reciprocating screws are arranged at the center positions of the front and rear sides of the purification equipment body through bearings.

[0010] Preferably, the filtering mechanism includes equidistantly arranged dredging scrapers, and the equidistantly arranged dredging scrapers are staggered with adjacent filter grilles, and the top surfaces of the equidistantly arranged dredging scrapers are provided with obliquely distributed discharge guide grooves, and the outer ends of the equidistantly arranged dredging scrapers are fixedly connected to traction brackets.

[0011] Preferably, the reciprocating screw included in the filtering mechanism is threadedly connected to the middle of the front and rear traction brackets, and the top ends of the symmetrically arranged reciprocating screws are connected to each other through a pulley assembly, and vibrating decontamination rods are fixedly provided at equal distances on the upper ends of the front and rear positioning brackets below, and the vibrating decontamination rods pass through the traction brackets through the protrusions on the outer wall, and the vibration is transmitted to the dredging scraper so that the tar is discharged downward through the discharge guide groove.

[0012] Preferably, the negative pressure mechanism includes a collecting box, and the collecting box is fixedly installed at the bottom end of the negative pressure connecting frame, and the collecting box is connected to the negative pressure connecting frame through flow ducts distributed at equal distances in the middle, and the left and right ends of the collecting box are respectively connected to the bottom surface of the purification equipment body and the spray box, so as to realize the collection and precipitation of tar, spray liquid and miscellaneous dirt.

[0013] Preferably, the negative pressure mechanism includes a driving shaft, and the driving shaft is installed on the right side of the inside of the negative pressure connecting frame, and the bottom end of the driving shaft is engaged with the shaft of the negative pressure fan module through a first bevel gear group, and the negative pressure connecting frame realizes mutual communication between the purification equipment body and the spray box body.

[0014] Preferably, the spray mechanism includes an exhaust filter, and the exhaust filter is fixedly installed at the right end of the spray box, and a driving gear ring is rotatably provided on the left side inside the spray box, and the driving gear ring is fixedly installed on the left side outside the spray frame, and a driving gear is engaged with the top of the driving gear ring.

[0015] Preferably, the driving gear included in the spray mechanism is rotatably installed above the left side of the spray box, and the output shaft at the left end of the driving gear extends to the inside of the top surface of the negative pressure connecting frame, and the output shaft at the left end of the driving gear is meshed and connected to the upper end of the driving shaft through a second bevel gear group.

[0016] Preferably, the spray mechanism includes a spray bracket, and the spray bracket is fixedly installed at equal angles inside the spray round bracket, and the inner wall of the spray bracket is fixedly installed with spray purification nozzles at equal distances, and the right ends of the equal-angle spray brackets are fixed to each other and connected to the bottom end of the one-way output pipe, so that liquid is supplied to the spray purification nozzle inside the spray bracket through the one-way output pipe to achieve the spraying effect.

[0017] Preferably, the spray mechanism includes a liquid supply tank fixedly mounted on the top surface of the spray box body, and a pump sleeve fixedly mounted on the top surface of the spray box body, and the right end of the pump sleeve is connected to the liquid supply tank through a one-way input pipe, and a push piston rod is slidably provided inside the left end of the pump sleeve; The left end of the pushing piston rod included in the spray mechanism is hinged to the right end of the flip connecting rod, and the left end of the flip connecting rod is rotatably set at the right end of the top surface of the rotating horizontal plate, and the left end of the rotating horizontal plate is fixedly connected to the top end of the external driving shaft of the negative pressure connecting frame, and the lower right end of the pumping sleeve is connected to the top end of the one-way output pipe, so that the tar air inside the spray box can be sprayed and purified by reciprocating pumping.

[0018] Compared with the prior art, the present invention has the following beneficial effects: the purification equipment for treating cathode roasted tar for aluminum performs multiple filtrations through the filter grid inside the purification equipment body, assists in separating and collecting tar substances, and transports the gas to the inside of the spray box for all-round spray degradation. At the same time, it assists in cooling the collected tar and the used spray liquid, facilitating subsequent collection and treatment. The specific contents are as follows: 1. The negative pressure fan module inside the negative pressure connecting frame works, so that the purification equipment body connected through it draws in the external air containing tar through the air inlet filter at the left end, so that the tar gas is filtered through the filter grilles evenly distributed inside the purification equipment body, so that the tar substance and the gas are separated from each other, and the air flows to the right for subsequent treatment.

[0019] Furthermore, the motor drives the reciprocating screw connected to the pulley assembly to rotate, and the threaded migration bracket drives the equally distributed guide scrapers to move back and forth up and down, so as to scrape and clean the tar materials stuck on the surface of the filter grille, so as to prevent the tar materials from clogging the filter grille and affecting the subsequent filtering effect.

[0020] The traction bracket drives the dredging scraper to rise and fall, and the vibrating decontamination rod penetrates the traction bracket so as to contact the protrusion on the outer wall of the vibrating decontamination rod to generate intermittent vibration, which is then transmitted to the dredging scraper to achieve vibration, and assist the tar material inclined structure on the surface of the dredging scraper to slide down, so that it can be collected and stored in the collection box.

[0021] 2. The negative pressure fan module guides the filtered air into the spray box. At the same time, the negative pressure fan module drives the driving shaft and the rotating cross plate to rotate through the first bevel gear group, and then drives the flip connecting rod to rotate in a circle, driving the push piston rod at the right end to move back and forth inside the pump sleeve, thereby realizing the suction and pressure push of the spray liquid.

[0022] When the push piston rod slides to the left, the spray liquid inside the liquid supply tank is sucked into the pump sleeve in a negative pressure manner through the one-way input pipe, and when the push piston rod slides to the right, the spray liquid inside the pump sleeve is driven to be transported to the interior of the spray box through the one-way output pipe connected through the through connection, so as to spray and degrade the filtered gas.

[0023] 3. The driving shaft drives the driving gear to rotate through the second bevel gear set, so that the driving gear engages the driving gear ring to drive the spray rack and the internal spray bracket to rotate, and the spray liquid transported from the pump sleeve is transported to the spray purification nozzle, thereby performing a full range of spray degradation on the gas inside the spray box so that it can be discharged through the exhaust filter.

[0024] Furthermore, the collection box collects the spray liquid containing impurities and odors inside the spray box. The negative pressure fan module rotating inside the negative pressure connecting frame introduces part of the air into the interior of the collection box through the through-connected flow duct, thereby assisting the cooling and solidification of the tar material inside the collection box, facilitating subsequent collection and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the negative pressure connecting frame of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the filter grid of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention after the dredging scraper is lowered; Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram; Figure 6 This is a structural diagram of the connection between the negative pressure connecting frame and the collection box of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 This is a schematic diagram of the installation structure of the spray round rack of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the pump sleeve of the present invention; Figure 10 This is a schematic diagram of the installation structure of the spray bracket and the spray purification nozzle of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point C in the middle.

[0026] In the figure: 1. Purification equipment body; 2. Air inlet filter; 3. Filter grille; 4. Negative pressure connecting frame; 5. Negative pressure fan module; 6. Spray box; 7. Spray round frame; 8. Positioning bracket; 9. Reciprocating screw; 10. Guide scraper; 11. Discharge guide groove; 12. Traction bracket; 13. Flow duct; 14. Drive shaft; 15. First bevel gear group; 16. Exhaust filter; 17. Drive gear ring; 18. Drive gear; 19. Second bevel gear group; 20. Spray bracket; 21. Spray purification nozzle; 22. One-way output pipe; 23. Liquid supply tank; 24. Pump sleeve; 25. Push piston rod; 26. Flip connecting rod; 27. Rotating cross plate; 28. Vibrating decontamination rod; 29. Collection box; 30. Pulley assembly; 31. One-way input pipe. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figures 1-11 , the present invention provides the following technical solutions: Example 1: In order to solve the problems existing in the use of existing roasted tar processing and purification devices, this embodiment discloses the following technical solution: a purification device for treating cathode roasted tar for aluminum, comprising a purification device body 1, and an air inlet filter 2 connected to the left end of the purification device body 1; a negative pressure mechanism is provided at the end of the purification device body 1 away from the air inlet filter 2, and the negative pressure mechanism includes a negative pressure connecting frame 4, and a negative pressure fan module 5 is rotatably provided inside the negative pressure connecting frame 4.

[0029] A filtering mechanism is provided inside the purification equipment body 1, and the filtering mechanism includes a filter grille 3, and the filter grille 3 is arranged at equal distances inside the purification equipment body 1; the filtering mechanism includes a positioning bracket 8, and the positioning bracket 8 is arranged at the four corners of the filter grille 3 arranged at equal distances, and the outer ends of the positioning brackets 8 at the four corners are fixedly connected to the inner wall of the purification equipment body 1, and a reciprocating screw 9 is provided at the center position of the front and rear sides of the purification equipment body 1 through bearing rotation.

[0030] The filtering mechanism includes equidistantly arranged dredging scrapers 10, and the equidistantly arranged dredging scrapers 10 are staggered with adjacent filter grilles 3, and the top surfaces of the equidistantly arranged dredging scrapers 10 are provided with obliquely distributed discharge guide grooves 11, and the outer ends of the equidistantly arranged dredging scrapers 10 are fixedly connected to traction brackets 12; the reciprocating screw rod 9 included in the filtering mechanism is threadedly connected to the middle of the front and rear traction brackets 12, and the top ends of the symmetrically arranged reciprocating screw rods 9 are connected to each other through pulley assemblies 30, and the upper ends of the front and rear positioning brackets 8 below are fixedly provided with vibrating decontamination rods 28 at equal distances, and the vibrating decontamination rods 28 pass through the traction bracket 12 through the protrusion of the outer wall, and transmit the vibration to the dredging scraper 10 so that the tar is discharged downward through the discharge guide groove 11.

[0031] like Figure 3-Figure 5As shown, when the tar air is treated and purified by the purification device body 1, the negative pressure connecting frame 4 connected to the purification device body 1 works through the internally installed negative pressure fan module 5, so that the interior of the purification device body 1 is in a negative pressure state, so that the air containing tar is sucked through one end of the air inlet filter 2, so that the tar air enters the interior of the purification device body 1 and is filtered through the equidistantly distributed filter grilles 3. The tar content in the air is gradually reduced through the multiple filter grilles 3. The separated tar sticks to the inner wall of the filter grille 3, and the air continues to flow to the right for subsequent processing.

[0032] Furthermore, the servo motor installed at the top of the purification equipment body 1 drives the reciprocating screw 9 connected by the pulley assembly 30 to rotate, and the traction bracket 12 threadedly connected to the reciprocating screw 9 drives the guide scraper 10 distributed at equal distances at the inner end to reciprocate and lift in the up and down directions, so that the guide scraper 10 can clean the filter grille 3 that is fitted and connected, and clean and scrape off the tar substances sticking to the surface of the filter grille 3 to avoid long-term accumulation affecting the normal filtering operation of the filter grille 3.

[0033] The traction bracket 12 drives the inner end of the dredging scraper 10 to move up and down, and when the traction bracket 12 descends and penetrates the vibrating decontamination rod 28, the protrusions equidistantly arranged on the outer wall of the vibrating decontamination rod 28 collide with the traction bracket 12, and when they are separated, vibration is generated and transmitted to the dredging scraper 10, assisting the tar material on the surface of the dredging scraper 10 to flow into the discharge guide groove 11 of the inclined structure, so that it can fall downward through the discharge guide groove 11 to the inside of the collection box 29 for collection and storage.

[0034] Example 2: In order to solve the problems existing in the use of the existing roasted tar treatment and purification device, this embodiment discloses the following technical solutions, the negative pressure mechanism includes a collection box 29, and the collection box 29 is fixedly installed at the bottom end of the negative pressure connecting frame 4, and the collection box 29 is connected to the negative pressure connecting frame 4 through the flow ducts 13 distributed at equal distances in the middle, and the left and right ends of the collection box 29 are respectively connected to the bottom surface of the purification equipment body 1 and the spray box 6, so as to realize the collection and precipitation of tar, spray liquid and miscellaneous dirt.

[0035] The negative pressure mechanism includes a drive shaft 14, and the drive shaft 14 is installed on the right side of the inside of the negative pressure connecting frame 4, and the bottom end of the drive shaft 14 is engaged with the shaft of the negative pressure fan module 5 through the first bevel gear group 15, and the negative pressure connecting frame 4 connects the purification equipment body 1 and the spray box 6 to each other.

[0036] The spray mechanism includes a liquid supply tank 23 fixedly mounted on the top surface of the spray box 6, and a pump sleeve 24 is fixedly mounted on the top surface of the spray box 6, and the right end of the pump sleeve 24 is connected to the liquid supply tank 23 through a one-way input pipe 31, and a push piston rod 25 is slidably arranged inside the left end of the pump sleeve 24; the left end of the push piston rod 25 included in the spray mechanism is hinged to the right end of the flip connecting rod 26, and the left end of the flip connecting rod 26 is rotatably arranged at the right end of the top surface of the rotating horizontal plate 27, and the left end of the rotating horizontal plate 27 is fixedly connected to the top end of the external driving shaft 14 of the negative pressure connecting frame 4, and the lower right end of the pump sleeve 24 is connected to the top end of the one-way output pipe 22, so that the tar air inside the spray box 6 can be sprayed and purified by reciprocating pumping.

[0037] like Figure 9-10 As shown, the negative pressure fan module 5 installed inside the negative pressure connecting frame 4 guides the filtered air inside the purification equipment body 1 to the right so that the air enters the interior of the spray box 6. At the same time, the negative pressure fan module 5 drives the meshing drive shaft 14 and the rotating cross plate 27 through the first bevel gear group 15 during the rotation process. The rotating cross plate 27 drives the flip connecting rod 26 set on the bottom surface to rotate in a circle, so that the flip connecting rod 26 drives the push piston rod 25 hinged at the right end to slide back and forth inside the pump sleeve 24, thereby achieving the effect of reciprocating suction and pushing.

[0038] When the pushing piston rod 25 slides to the left, the inside of the pumping sleeve 24 is in a negative pressure state so that the spray liquid inside the liquid supply tank 23 is sucked into the pumping sleeve 24 through the one-way input pipe 31 for storage, and when the pushing piston rod 25 slides to the right, the spray liquid inside the auxiliary pumping sleeve 24 is transported to the inside of the spray box 6 through the one-way output pipe 22 that is connected through it, and then sprays the air inside the spray box 6.

[0039] Example 3: In order to solve the problems existing in the use of the existing roasted tar processing and purification device, this embodiment discloses the following technical solutions: a spray mechanism is provided at the right end of the negative pressure mechanism, and the spray mechanism includes a spray box 6, and a spray round frame 7 is rotatably provided inside the spray box 6; the spray mechanism includes an exhaust filter 16, and the exhaust filter 16 is fixedly installed at the right end of the spray box 6, and a drive gear ring 17 is rotatably provided on the left side of the inside of the spray box 6, and the drive gear ring 17 is fixedly installed on the outer left side of the spray round frame 7, and a drive gear 18 is engaged with the top of the drive gear ring 17.

[0040] The driving gear 18 included in the spray mechanism is rotatably installed on the upper left side of the interior of the spray box 6, and the left end output shaft of the driving gear 18 extends to the inside of the top surface of the negative pressure connecting frame 4, and the output shaft of the left end of the driving gear 18 is meshed and connected to the upper end of the driving shaft 14 through the second bevel gear group 19; the spray mechanism includes a spray bracket 20, and the spray bracket 20 is fixedly installed at equal angles on the inside of the spray circular frame 7, and the inner wall of the spray bracket 20 is fixedly installed with spray purification nozzles 21 at equal distances, and the right ends of the equal-angle spray brackets 20 are fixed to each other and are connected to the bottom end of the one-way output pipe 22, so that liquid is supplied to the spray purification nozzle 21 inside the spray bracket 20 through the one-way output pipe 22 to achieve the spraying effect.

[0041] like Figure 3 、 Figure 10-11 As shown, when the negative pressure fan module 5 inside the negative pressure connecting frame 4 drives the driving shaft 14 to rotate, the driving shaft 14 drives the driving gear 18 meshed with the second bevel gear group 19 above to rotate, and the driving gear 18 drives the meshed driving gear ring 17 and the spray circular frame 7 to rotate inside the spray box 6, and the spray circular frame 7 drives the spray bracket 20 and the spray purification nozzle 21 distributed at equal angles inside to rotate in a circle, and the one-way output pipe 22 connected through it supplies liquid to the spray purification nozzle 21 to realize spraying, which assists in all-round spraying of the gas to achieve degradation and deodorization, and can also be collected through the collection box 29.

[0042] Furthermore, the tar substances inside the purification equipment body 1 and the odorous impurities inside the spray box 6 are collected by the collecting box 29, and the negative pressure fan module 5 inside the negative pressure connecting frame 4 transports part of the airflow to the interior of the collecting box 29 through the through-connected flow duct 13 during the rotation process, so as to assist in cooling the tar substances and stratify them with the spray liquid for subsequent collection.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A purification device for treating aluminum cathode roasting tar, comprising a purification device body (1), and an air inlet filter (2) connected to the left end of the purification device body (1); It is characterized in that Also includes: A filtering mechanism is provided inside the purification device body (1), and the filtering mechanism includes a filtering grid (3), and the filtering grid (3) is provided inside the purification device body (1) at equal distances; A negative pressure mechanism is provided at one end of the purification device body (1) away from the air inlet filter (2), and the negative pressure mechanism includes a negative pressure connecting frame (4), and a negative pressure fan module (5) is rotatably provided inside the negative pressure connecting frame (4); A spray mechanism is provided at the right end of the negative pressure mechanism, and the spray mechanism includes a spray box (6), and a spray round frame (7) is rotatably provided inside the spray box (6).

2. The purification equipment for treating cathode roasted tar for aluminum according to claim 1, characterized in that: The filtering mechanism includes a positioning bracket (8), and the positioning bracket (8) is arranged through the four corners of the filter grille (3) arranged at equal distances, and the outer ends of the positioning brackets (8) at the four corners are fixedly connected to the inner wall of the purification device body (1), and reciprocating screw rods (9) are rotatably arranged at the center positions of the front and rear sides of the purification device body (1) through bearings.

3. The purification equipment for treating aluminum cathode roasting tar according to claim 2, characterized in that: The filtering mechanism comprises equidistantly arranged dredging scrapers (10), and the equidistantly arranged dredging scrapers (10) are staggeredly arranged with adjacent filtering grilles (3), and the top surfaces of the equidistantly arranged dredging scrapers (10) are provided with obliquely distributed discharge guide grooves (11), and the outer ends of the equidistantly arranged dredging scrapers (10) are fixedly connected to traction brackets (12).

4. The purification equipment for treating cathode roasted tar for aluminum according to claim 3, characterized in that: The filtering mechanism includes a reciprocating screw (9) threadedly connected to the middle of the front and rear traction brackets (12), and the top ends of the symmetrically arranged reciprocating screws (9) are connected to each other through a pulley assembly (30), and a vibrating decontamination rod (28) is fixedly provided at an equal distance on the upper ends of the front and rear positioning brackets (8) below, and the vibrating decontamination rod (28) passes through the traction bracket (12) through the protrusion of the outer wall, and transmits the vibration to the guide scraper (10), so that the tar is discharged downward through the discharge guide groove (11).

5. The purification equipment for treating aluminum cathode roasting tar according to claim 1, characterized in that: The negative pressure mechanism includes a collecting box (29), and the collecting box (29) is fixedly mounted on the bottom end of the negative pressure connecting frame (4), and the collecting box (29) is connected to the negative pressure connecting frame (4) through the flow conduits (13) distributed at equal intervals in the middle, and the left and right ends of the collecting box (29) are respectively connected to the bottom surface of the purification equipment body (1) and the spray box (6), so as to realize the collection and precipitation of tar, spray liquid and miscellaneous dirt.

6. The purification equipment for treating aluminum cathode roasting tar according to claim 5, characterized in that: The negative pressure mechanism includes a driving shaft (14), and the driving shaft (14) is installed on the right side of the interior of the negative pressure connecting frame (4), and the bottom end of the driving shaft (14) is meshed and connected to the shaft of the negative pressure fan module (5) through the first bevel gear group (15), and the negative pressure connecting frame (4) connects the purification equipment body (1) and the spray box (6) to each other.

7. The purification equipment for treating cathode roasted tar for aluminum according to claim 1, characterized in that: The spray mechanism includes an exhaust filter (16), and the exhaust filter (16) is fixedly installed at the right end of the spray box (6), and a driving gear ring (17) is rotatably provided on the left side of the interior of the spray box (6), and the driving gear ring (17) is fixedly installed on the left side of the exterior of the spray frame (7), and a driving gear (18) is meshed with the top of the driving gear ring (17).

8. The purification equipment for treating aluminum cathode roasting tar according to claim 7, characterized in that: The driving gear (18) included in the spray mechanism is rotatably mounted above the left side of the spray box (6), and the output shaft at the left end of the driving gear (18) extends to the inside of the top surface of the negative pressure connecting frame (4), and the output shaft at the left end of the driving gear (18) is meshed and connected to the upper end of the driving shaft (14) through the second bevel gear set (19).

9. The purification equipment for treating cathode roasted tar for aluminum according to claim 8, characterized in that: The spray mechanism includes a spray bracket (20), and the spray bracket (20) is fixedly installed at equal angles inside the spray round bracket (7), and spray purification nozzles (21) are fixedly installed at equal distances on the inner wall of the spray bracket (20), and the right ends of the equal-angle spray brackets (20) are fixed to each other and connected to the bottom end of the one-way output pipe (22) so that liquid is supplied to the spray purification nozzle (21) inside the spray bracket (20) through the one-way output pipe (22) to achieve a spraying effect.

10. The purification equipment for treating aluminum cathode roasting tar according to claim 1, characterized in that: The spray mechanism includes a liquid supply water tank (23) fixedly mounted on the top surface of the spray box (6), and a pump sleeve (24) fixedly mounted on the top surface of the spray box (6), and the right end of the pump sleeve (24) is connected to the liquid supply water tank (23) through a one-way input pipe (31), and a push piston rod (25) is slidably provided inside the left end of the pump sleeve (24); The spray mechanism includes a push piston rod (25) whose left end and a flip connecting rod (26) are hinged to each other, and the left end of the flip connecting rod (26) is rotatably arranged on the right end of the top surface of the rotating horizontal plate (27), and the left end of the rotating horizontal plate (27) is fixedly connected to the top end of the external driving shaft (14) of the negative pressure connecting frame (4), and the lower right end of the pump sleeve (24) is connected to the top end of the one-way output pipe (22), so that the tar air inside the spray box (6) can be sprayed and purified by reciprocating pumping.

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