Round top charging aluminum alloy smelting furnace workshop flue gas organized emission system

Abstract

The utility model discloses a round top charging aluminum alloy smelting furnace workshop smoke organized emission system which comprises round top charging aluminum alloy smelting furnaces evenly arranged in a workshop and roof smoke exhaust hoods arranged on the top of the workshop, and one roof smoke exhaust hood is arranged above each round top charging aluminum alloy smelting furnace. Roof smoke exhaust hood branch flues are arranged above the roof smoke exhaust hoods, a round top feeding aluminum alloy smelting furnace roof smoke collection technology which is not limited by a traveling crane, a cover opening machine and a feeding device is adopted, the workshop top above the furnace is divided into a plurality of areas through trusses and roofs, and then the multiple roof smoke exhaust hoods are divided. Each furnace corresponds to a plurality of smoke exhaust hoods to form a partition control roof integral type smoke exhaust hood matched with a workshop structure form, so that the smoke collection effect is improved, the operation cost is reduced, the pollution to the atmosphere can be reduced, and the environment protection is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing, in particular to an organized smoke emission system for a circular top-loading aluminum alloy smelting furnace workshop. Background Art

[0002] The aluminum alloy melting furnace with round top loading is the main furnace type for melting and casting in the period of rapid development of aluminum processing in China because of its high thermal energy utilization rate, fast loading and high production efficiency. When loading this type of furnace, it is necessary to remove the furnace cover with a horizontal movable cover opener, and use a crane to hang the loading device containing the raw materials above the melting furnace, and pour the raw materials into the melting furnace. During the loading process, the furnace of the round top loading aluminum alloy melting furnace will emit smoke outward.

[0003] During the peak period of construction of the circular top-loading aluminum alloy melting furnace, the production process and equipment layout did not consider the problem of flue gas collection during furnace charging or the possibility of future flue gas control.

[0004] As national and local environmental protection policies become increasingly stringent, environmental protection departments have begun to control the problem of unorganized flue gas emissions when charging round top-loading aluminum alloy melting furnaces. Due to the limitations of furnace type and charging process, it is impossible to arrange a local exhaust hood on the furnace body. Some companies use traditional roof exhaust hoods between the crane above the furnace and the workshop roof to collect flue gas, and are equipped with large-scale dust removal equipment. However, due to the obstruction and influence of the lid opener, charging device, and crane, the flue gas collection not only fails to achieve the expected effect, but also causes a huge waste of investment and operating costs. As a result, under the current environmental protection situation, the treatment of flue gas generated when charging round top-loading aluminum alloy melting furnaces has become an industry problem.

[0005] Therefore, we propose an organized exhaust system for smoke in a circular top-loading aluminum alloy melting furnace workshop. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the existing defects and provide an organized smoke emission system for a circular top-loading aluminum alloy smelting furnace workshop, forming a partitioned controlled roof integral smoke exhaust hood that matches the workshop structure, thereby improving the smoke collection effect, reducing operating costs, reducing pollution to the atmosphere, being beneficial to environmental protection, and effectively solving the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an organized smoke emission system for a circular top-loading aluminum alloy smelting furnace workshop, comprising circular top-loading aluminum alloy smelting furnaces uniformly arranged in the workshop and a roof exhaust hood arranged on the top of the workshop, a roof exhaust hood is arranged above each circular top-loading aluminum alloy smelting furnace, a roof exhaust hood branch flue is arranged above the roof exhaust hood, a plurality of roof exhaust hood branch flues are connected in parallel to the roof exhaust main flue, and a roof exhaust hood valve is arranged on each roof exhaust hood branch flue; The main smoke exhaust duct is connected with the bag dust collector outside the workshop through the bag dust collector inlet branch duct, the bag dust collector inlet branch duct is provided with a bag dust collector inlet branch duct valve, the bag dust collector outlet is provided with a rotary discharger, the rotary discharger outlet is connected with the inlet of the screw conveyor, and the screw conveyor outlet is provided with a double-layer automatic flap valve; the bag dust collector is connected with the induced draft fan through the bag dust collector outlet branch duct, the induced draft fan is connected with the exhaust pipe through the induced draft fan outlet branch duct, and the induced draft fan outlet flue valve is provided on the induced draft fan outlet branch duct.

[0008] As an optimal technical solution of the utility model, the bag dust collector inlet branch flue, bag dust collector, bag dust collector inlet branch flue valve, rotary unloader, screw conveyor, double-layer automatic flap valve, bag dust collector outlet branch flue, induced draft fan, induced draft fan outlet branch flue and induced draft fan outlet flue valve are arranged in two groups, the two bag dust collector inlet branch flues are connected to the roof smoke exhaust main flue, and the two induced draft fan outlet branch flues are connected to the exhaust chimney.

[0009] As a preferred technical solution of the utility model, a main flue temperature sensor is provided on the roof smoke exhaust main flue.

[0010] As a preferred technical solution of the utility model, a bag filter inlet flue pressure sensor is provided on the bag filter inlet branch flue.

[0011] As a preferred technical solution of the utility model, a bag filter inlet temperature sensor is provided on the bag filter inlet branch flue.

[0012] As a preferred technical solution of the utility model, bag dust collector pressure difference sensors are installed at both ends of the inlet and outlet of the bag dust collector.

[0013] As a preferred technical solution of the utility model, an online particulate matter monitoring system is provided on the exhaust pipe.

[0014] As a preferred technical solution of the utility model, the bag dust collectors are connected to an external compressed air source through a compressed air pipeline.

[0015] As a preferred technical solution of the utility model, a pulse cleaning controller is provided on the compressed air pipeline.

[0016] As a preferred technical solution of the utility model, a workshop working area temperature gauge is arranged near the circular top-loading aluminum alloy smelting furnace in the workshop.

[0017] Compared with the prior art, the beneficial effects of the utility model are: adopting the roof smoke collection technology of the circular top feeding aluminum alloy smelting furnace which is not restricted by the crane, the cover opener and the feeding device, the factory roof above the furnace is divided into multiple areas by the trusses and the roof, and then divided into several roof smoke exhaust hoods, each furnace corresponds to several smoke exhaust hoods, forming a partitioned controlled roof integral smoke exhaust hood matching the workshop structure, which improves the smoke collection effect, reduces the operating costs, can reduce the pollution to the atmosphere, and is beneficial to environmental protection.

[0018] The roof exhaust hood of each furnace is equipped with several valves, and these valves are interlocked with the corresponding round top-loading aluminum alloy melting furnace cover. When any round top aluminum alloy smelting furnace opens the furnace cover for charging, the system enters the smoke exhaust and dust removal mode. At this time, the function of the organized emission system is to exhaust and dust the smoke generated by opening the cover of the round top aluminum alloy smelting furnace for charging. All roof exhaust hood valves and furnace covers corresponding to the charging smelting furnace are automatically opened at the same time, and the roof exhaust hood valves of the smelting furnace that does not open the furnace cover for charging are automatically closed. The organized emission system collects the dust-containing smoke emitted from the charging port on the top of the charging smelting furnace, and the speed of the induced draft fan is automatically adjusted according to the number of smelting furnaces with open covers for charging; when all smelting furnaces are not charged (all smelting furnace covers are in closed state), the system enters the ventilation mode. At this time, the function of the organized emission system is to ventilate the workshop, and the roof exhaust hood valves of all furnaces are automatically opened and automatically at the set opening. The system evenly exhausts the workshop to ensure the ventilation effect of the workshop, and the speed of the induced draft fan is automatically adjusted according to the temperature of the workshop working area.

[0019] The smoke collected by the roof exhaust hood enters the bag dust collector under the guidance of the induced draft fan. After dust removal, it meets the emission standards and is discharged into the atmosphere through the exhaust pipe.

[0020] The dust adhering to the filter bags of the bag filter is cleaned by the pulse jet cleaning system and falls into the ash hopper at the bottom of the dust collector. It is then discharged through the rotary discharger and screw conveyor for centralized disposal.

[0021] The flue gas collection method is well matched with the production process. The flue gas is controlled throughout the whole process of opening the cover and charging the smelting furnace. The dust-containing flue gas collection efficiency is high and the required air volume is small. The system functions (smoke exhaust, dust removal and ventilation) are automatically switched to meet the needs of different functional uses. The system operating air volume is automatically adjusted according to the functional use. On the premise of meeting the use requirements, the energy-saving effect is obvious. The investment and operation costs of the organized flue gas emission system are low, enabling the enterprise to achieve a win-win situation of environmental and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] In the figure: 1 circular top loading aluminum alloy melting furnace, 2 roof exhaust hood, 3 roof exhaust hood valve, 4 roof exhaust hood branch flue, 5 roof exhaust main flue, 6 main flue temperature sensor, 7 bag filter inlet branch flue, 8 bag filter inlet flue pressure sensor, 9 bag filter inlet temperature sensor, 10 bag filter inlet branch flue valve, 11 bag filter, 12 induced draft fan, 13 bag filter pressure difference sensor, 14 rotary discharger, 15 screw conveyor, 16 double-layer automatic flap valve, 17 bag filter outlet branch flue, 18 induced draft fan outlet branch flue, 19 induced draft fan outlet flue valve, 20 exhaust pipe, 21 particulate matter online monitoring system, 22 compressed air pipeline, 23 pulse cleaning controller, 24 workshop work area temperature meter. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1The utility model provides a technical solution: an organized smoke emission system for a circular top-loading aluminum alloy smelting furnace workshop, comprising a circular top-loading aluminum alloy smelting furnace 1 evenly arranged in the workshop and a roof exhaust hood 2 arranged on the top of the workshop. The circular top-loading aluminum alloy smelting furnace 1 is used to melt and remelt aluminum ingots, etc. during aluminum processing. During the top-opening charging process, the furnace will emit dusty smoke from the top charging port to the outside. A roof exhaust hood 2 is arranged above each circular top-loading aluminum alloy smelting furnace 1. The roof exhaust hood 2 is used to collect the dusty smoke emitted from the top charging port of the furnace during the top-opening charging process of the circular top-loading aluminum alloy smelting furnace. The exhaust hood is a zone-controlled roof integral exhaust hood that matches the workshop structure. The factory roof above the furnace is divided into multiple areas by trusses and roofs, and then divided into several roof exhaust hoods. Each furnace corresponds to several exhaust hoods. The flue gas is controlled during the whole process of opening the cover and adding materials to the smelting furnace top, the dust-containing flue gas collection efficiency is high, the required air volume is small, and the initial investment and operating costs of the organized flue gas emission system are low.

[0026] A roof exhaust hood branch flue 4 is arranged above the roof exhaust hood 2. A plurality of roof exhaust hood branch flues 4 are connected in parallel to a roof exhaust main flue 5 to discharge smoke collected by the corresponding roof exhaust hood 2. A roof exhaust hood valve 3 is arranged on each roof exhaust hood branch flue 4 to control the exhaust of the roof exhaust hood.

[0027] The main smoke exhaust duct 5 on the roof is connected to the bag dust collector 11 outside the workshop through the bag dust collector inlet branch duct 7. The smoke is transported to the smoke exhaust and dust removal equipment, namely the bag dust collector 11, through the main smoke exhaust duct 5 on the roof and the bag dust collector inlet branch duct 7. The bag dust collector inlet branch duct 7 is provided with a bag dust collector inlet branch duct valve 10 for opening and closing the bag dust collector inlet branch duct 7. When the equipment is normal, it is opened. When the equipment fails, the corresponding bag dust collector inlet branch duct valve 10 is closed. Another bag dust collector 11 and an induced draft fan 12 are used to ventilate and dust remove the workshop. That is, the ventilation and dust removal equipment is always in operation during the production of the smelting furnace, so as to avoid the smelting furnace from stopping production due to the substandard smoke emission generated by the top cover being opened for charging. At the same time, it can ensure continuous ventilation of the workshop, ensure the air quality of the workshop environment, create a good working environment for the production personnel, and benefit the health of the production personnel.

[0028] The flue gas is dedusted by the bag filter 11 so that the particle emission concentration in the flue gas is lower than the emission limit.

[0029] A rotary discharger 14 is provided at the outlet of the bag filter 11 for discharging the dust collected by the bag filter 11 and locking the air in the ash hopper of the bag filter 11 . It is a component for ensuring the continuous and stable operation of the bag filter 11 .

[0030] The outlet of the rotary discharger 14 is connected to the inlet of the screw conveyor 15. The screw conveyor 15 is used to discharge the dust collected by the bag dust collector 11. It is a component to ensure the continuous and stable operation of the bag dust collector. At the same time, multiple rotary dischargers 14 of the bag dust collector 11 are assembled together, and multiple ash discharge ports of the bag dust collector 11 are combined into one ash discharge port, which improves the collection efficiency and reduces the labor intensity of workers.

[0031] A double-layer automatic flap valve 16 is provided at the outlet of the screw conveyor 15 , which is used to make the material fall and prevent wild wind from entering, thereby completing the discharge of dust in the bag dust collector 11 .

[0032] The bag filter 11 is connected to the induced draft fan 12 through the bag filter outlet branch flue 17. The induced draft fan 12 is used to transport smoke and is frequency-controlled. The rotation speed is controlled according to the operating mode of the smoke organized emission system (smoke exhaust and dust removal, ventilation), the number of smelting furnaces with top open covers for charging, and the temperature of the workshop working area, so that the fan operating parameters are adapted to the actual production conditions of the smelting furnace, which can not only meet the use requirements of workshop ventilation and dust removal, but also save the energy consumption of the smoke organized emission system and reduce the operating costs of the smoke organized emission system.

[0033] The induced draft fan 12 is connected to the exhaust pipe 20 through the induced draft fan outlet branch flue 18, and discharges the flue gas that meets the emission standards after dust removal into the atmosphere.

[0034] An induced draft fan outlet flue valve 19 is provided on the induced draft fan outlet branch flue 18 for controlling the on and off of the induced draft fan outlet branch flue 18. The valve is opened when the equipment is normal, and closed when the equipment fails. Another bag filter 11 and induced draft fan 12 are used to ventilate and remove dust from the workshop, that is, ventilation and dust removal equipment is always in operation during the production of the smelting furnace, so as to avoid the smelting furnace from stopping production due to substandard flue gas emissions caused by opening the cover to add materials. At the same time, continuous ventilation of the workshop can be ensured, the air quality of the workshop environment can be ensured, a good working environment can be created for the production personnel, and the health of the production personnel can be beneficial to the production personnel.

[0035] The valve type of the roof exhaust hood valve 3 is a regulating valve, which is used to control the exhaust of the roof exhaust hood. The roof exhaust hood of each furnace is equipped with several valves, and these valves are interlocked with the corresponding round top charging aluminum alloy melting furnace cover. When any round top charging aluminum alloy smelting furnace 1 opens the furnace cover for charging, the system enters the smoke exhaust and dust removal mode. At this time, the function of the organized emission system is to exhaust and dust the smoke generated by opening the cover of the round top charging aluminum alloy smelting furnace for charging. All roof smoke exhaust hood valves 3 and furnace covers corresponding to the charging smelting furnaces are automatically opened at the same time, and the roof smoke exhaust hood valves 3 of the smelting furnaces that do not open the furnace cover for charging are automatically closed. The organized emission system collects the dust-containing smoke emitted from the charging port on the top of the charging smelting furnace, and the speed of the induced draft fan 12 is automatically adjusted according to the number of smelting furnaces with open covers for charging; when all smelting furnaces are not charged (all smelting furnace covers are in a closed state), the system enters the ventilation mode. At this time, the function of the organized emission system is to ventilate the workshop, and the roof smoke exhaust hood valves of all furnaces are automatically opened and automatically at the set opening. The system evenly exhausts the workshop to ensure the ventilation effect of the workshop, and the speed of the induced draft fan is automatically adjusted according to the temperature of the workshop working area. The automatic switching of the organized emission system functions (smoke exhaust, dust removal and ventilation) can meet the needs of different functional uses, and the operating air volume is automatically adjusted. On the premise of meeting the use requirements, the energy-saving effect is obvious and the operating cost is low.

[0036] The preferred technical solution is that in order to ensure that the dust removal equipment does not affect the normal production of the workshop in the event of maintenance or failure, the system is equipped with two sets of dust removal equipment, namely, the bag dust collector inlet branch flue 7, the bag dust collector 11, the bag dust collector inlet branch flue valve 10, the rotary discharger 14, the screw conveyor 15, the double-layer automatic flap valve 16, the bag dust collector outlet branch flue 17, the induced draft fan 12, the induced draft fan outlet branch flue 18 and the induced draft fan outlet flue valve 19 are provided in two groups, the two bag dust collector inlet branch flues 7 are connected to the roof exhaust main flue 5, and the two induced draft fan outlet branch flues 18 are connected to the exhaust chimney 20. When one of the equipment cannot work normally, just close the flue valve corresponding to the dust removal equipment (the inlet branch flue valve of the bag filter and the outlet flue valve of the induced draft fan), and use the other bag filter and induced draft fan to ventilate and remove dust in the workshop (the equipment is not configured as one for use and one for backup. At this time, the equipment can only meet 50% of the maximum number of furnaces that can be charged at the same time, and the ventilation can only meet the upper limit of the workshop working area temperature specified in the design standards). That is, the ventilation and dust removal equipment is always in operation when the smelting furnace is in production, so as to avoid the shutdown of the smelting furnace due to the substandard flue gas emissions generated by the top cover being opened for charging. At the same time, it can ensure continuous ventilation of the workshop, ensure the air quality of the workshop environment, create a good working environment for the production personnel, and benefit the health of the production personnel.

[0037] The key parameters of system operation are detected and controlled by the control system in the system. When the limit value is exceeded, corresponding protection is carried out to ensure the safe and stable operation of the system.

[0038] The preferred technical solution is that a main flue temperature sensor 6 is provided on the roof exhaust main flue 5 to monitor the flue gas temperature of the main flue of the organized flue gas emission system. When the temperature exceeds a certain set value, an alarm is sounded. When the temperature continues to rise and exceeds a certain set value, the roof exhaust hood valve corresponding to the smelting furnace with the furnace cover closed is automatically opened to cool down and protect the equipment.

[0039] The preferred technical solution is that a bag filter inlet flue pressure sensor 8 is provided on the bag filter inlet branch flue 7 for monitoring the pressure of the bag filter inlet branch flue 7 and accurately adjusting the rotation speeds of the two induced draft fans 12 according to the pressure difference of the inlet flues of the two bag filters 11 so that the amount of flue gas entering each bag filter 11 is the same.

[0040] According to a further preferred technical solution, a bag filter inlet temperature sensor 9 is provided on the bag filter inlet branch flue 7 for monitoring the inlet flue gas temperature of the bag filter 11 .

[0041] The preferred technical solution is that bag filter pressure difference sensors 13 are installed at both ends of the inlet and outlet of the bag filter 11 to monitor the pressure difference of the bag filter 11. When the pressure difference exceeds a certain set value, an alarm is sounded or the operation is suspended to avoid further losses.

[0042] Optionally, the exhaust pipe 20 is provided with a particulate matter online monitoring system 21, which is used to monitor the concentration of particulate matter discharged into the atmosphere online at the outlet of the exhaust pipe 20, and to display the monitoring results in a visual form on an external real-time monitoring platform. In this way, the staff responsible for monitoring can understand the situation of particulate matter discharged into the atmosphere at any time, and take corresponding control measures in time to ensure that the flue gas meets the emission standards and prevent environmental pollution.

[0043] According to a preferred technical solution, the bag dust collectors 11 are connected to an external compressed air source via a compressed air pipe 22 to supply the bag dust collectors 11 with compressed air for cleaning.

[0044] A further preferred technical solution is that a pulse cleaning controller 23 is provided on the compressed air pipe 22. When the bag dust collector 11 is running, the dust adhering to the outer surface of the filter bag is cleaned, thereby reducing the operating resistance of the bag dust collector 11 and the load on the filter bag. It is a component that ensures the continuous and stable operation of the bag dust collector 11.

[0045] Optionally, a workshop work area temperature meter 24 is provided near the circular top loading aluminum alloy smelting furnace 1 in the workshop, which is used to measure the workshop work area temperature and control the speed of the induced draft fan 12 when the smoke organized emission system is running in ventilation mode. When the workshop work area temperature is high, the induced draft fan 12 runs at a high speed; when the workshop temperature is low, the induced draft fan 12 runs at a low speed. While ensuring the ventilation effect, it can save the energy consumption of the induced draft fan and reduce the system operation cost.

[0046] The roof smoke exhaust hood valve 3, main flue temperature sensor 6, bag dust collector inlet flue pressure sensor 8, bag dust collector inlet temperature sensor 9, bag dust collector inlet branch flue valve 10, bag dust collector 11, induced draft fan 12, bag dust collector pressure difference sensor 13, rotary unloader 14, screw conveyor 15, double-layer automatic flap valve 16, induced draft fan outlet flue valve 19, particulate matter online monitoring system 21, pulse cleaning controller 23, workshop work area temperature meter 24, etc. used in this application are all connected to the control system in the emission system. The control system can use a PLC control box commonly used in the prior art, and automatically control through a preset program. The control method is a method commonly used in the prior art; the above-mentioned electronic components are all devices commonly used in the prior art, and their specific structures, working principles and circuit connections are all well-known technologies and are not described in detail here.

[0047] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A system for the organized emission of smoke from a circular top-loading aluminum alloy smelting furnace workshop, comprising circular top-loading aluminum alloy smelting furnaces (1) evenly arranged in the workshop and a roof exhaust hood (2) arranged on the top of the workshop, wherein a roof exhaust hood (2) is arranged above each circular top-loading aluminum alloy smelting furnace (1), and characterized in that: A roof exhaust hood branch flue (4) is arranged above the roof exhaust hood (2); a plurality of roof exhaust hood branch flues (4) are connected in parallel to the roof exhaust main flue (5); each roof exhaust hood branch flue (4) is provided with a roof exhaust hood valve (3); the roof exhaust main flue (5) is connected to a bag dust collector (11) outside the workshop via a bag dust collector inlet branch flue (7); a bag dust collector inlet branch flue valve (10) is provided on the bag dust collector inlet branch flue (7); and the bag dust collector (11) is connected to the bag dust collector inlet branch flue valve (10). A rotary discharger (14) is provided at the outlet of the rotary discharger (14), the outlet of the rotary discharger (14) is connected to the inlet of the screw conveyor (15), and a double-layer automatic flap valve (16) is provided at the outlet of the screw conveyor (15); the bag filter (11) is connected to the induced draft fan (12) via the bag filter outlet branch flue (17), the induced draft fan (12) is connected to the exhaust pipe (20) via the induced draft fan outlet branch flue (18), and an induced draft fan outlet flue valve (19) is provided on the induced draft fan outlet branch flue (18).

2. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized by: The bag filter inlet branch flue (7), bag filter (11), bag filter inlet branch flue valve (10), rotary discharger (14), screw conveyor (15), double-layer automatic flap valve (16), bag filter outlet branch flue (17), induced draft fan (12), induced draft fan outlet branch flue (18) and induced draft fan outlet flue valve (19) are provided in two groups, and the two bag filter inlet branch flues (7) are both connected to the roof smoke exhaust main flue (5), and the two induced draft fan outlet branch flues (18) are both connected to the exhaust pipe (20).

3. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized by: The roof smoke exhaust main flue (5) is provided with a main flue temperature sensor (6).

4. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized in that: The bag filter inlet branch flue (7) is provided with a bag filter inlet flue pressure sensor (8).

5. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 4 is characterized in that: The bag filter inlet branch flue (7) is provided with a bag filter inlet temperature sensor (9).

6. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized by: Bag dust collector pressure difference sensors (13) are installed at both ends of the inlet and outlet of the bag dust collector (11).

7. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized by: The exhaust pipe (20) is provided with an online particulate matter monitoring system (21).

8. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized by: The bag dust collectors (11) are connected to an external compressed air source via a compressed air pipeline (22).

9. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 8 is characterized by: The compressed air pipeline (22) is provided with a pulse dust cleaning controller (23).

10. The organized exhaust system of smoke from a circular top-loading aluminum alloy smelting furnace workshop according to claim 1 is characterized in that: A workshop working area temperature gauge (24) is arranged near the circular top-loading aluminum alloy smelting furnace (1) in the workshop.

Images