Lead-containing flue gas dust removal and purification device

Abstract

The invention relates to the technical field of dust removal and discloses a lead-containing flue gas dust removal and purification device which is mainly composed of a supporting frame, a dust remover, a gas inlet pipeline, a filtering device, a motor, a transmission device and the like, a fixing box is fixedly connected to the position, corresponding to the gas inlet pipeline, of the inner side wall of the dust remover, and a heating coil is fixedly installed in the fixing box; a clamping block is fixedly connected to the bottom face of the fixing box, a clamping groove is connected to the bottom of the fixing box in a clamped mode through the clamping block, and a cylindrical bearing net is arranged in the clamping groove. After lead-containing flue gas enters the fixing box through the gas inlet pipeline, the heating coil is used for heating the lead-containing flue gas, and when the temperature of the heating coil rises to be higher than the melting point of lead, the lead in the flue gas is heated to be molten and drops into the clamping groove, and due to the fact that cooling water is contained in the clamping groove, the lead in the flue gas is cooled; the molten lead is cooled by the cooling water to form lead particles, so that the lead in the lead-containing flue gas is convenient to separate and collect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal, in particular to a lead-containing flue gas dust removal and purification device. BACKGROUND

[0002] Lead-containing flue gas dust is fine dust containing metal lead or lead compounds, also known as lead dust. Lead dust is mainly formed by flue dust generated in the process of lead smelting, processing and lead product production. Its components include lead sulfide, lead oxide and metal lead. The main measure to prevent and control lead dust pollution is to close the dust source and discharge after dust removal. Lead-containing flue gas generally needs to pass through two to three stages of dust removal to meet the national emission standard. The dust removal process mainly includes gravity settling chamber, cyclone dust collector and bag-type dust collector. The commonly used dust collector for lead-containing flue gas dust is mainly a bag-type dust collector. The dust removal method of the bag-type dust collector mainly includes introducing lead-containing flue gas into the dust collector, separating dust and impurities in the flue gas by using the dust removal bag in the dust collector, and then blowing off the dust and impurities attached to the dust removal bag by using pulse gas.

[0003] In the process of dust removal of the existing bag-type dust collector for lead-containing flue gas, lead is easily oxidized at room temperature, which makes lead-containing flue gas easily cause the dust removal bag to be blocked, thereby reducing the dust removal effect. In addition, lead-containing flue gas needs to be filtered by multiple stages of dust removal to meet the emission standard, which reduces the dust removal efficiency. Moreover, when the pulse gas impacts the dust removal bag for dust removal, the dust will fly in the dust collector due to the gas pressure of the pulse gas. Part of the light dust and impurities cannot be effectively collected due to the flying, thereby affecting the dust removal effect. SUMMARY

[0004] The present application provides a lead-containing flue gas dust removal and purification device, which can separate and collect lead in flue gas, improve the utilization rate of lead, reduce resource waste, and use cooling water to preliminarily filter flue gas to prevent the dust removal bag from being blocked. Water vapor is used to reduce dust in the interior of the dust collector. The dust forms lumps after meeting water vapor and does not fly in the interior of the dust collector, thereby improving the dust removal effect, to solve the technical problems of difficult separation of lead in flue gas, easy blocking of the dust removal bag and dust reduction in the interior of the dust collector.

[0005] In order to achieve the above object, the technical scheme adopted by the present application is as follows: a lead-containing flue gas dust removal and purification device, comprising a support frame, a dust remover is fixedly installed on the upper part of the support frame, a sealing cover is hingedly connected to the top surface of the dust remover, a dust removal cloth bag is fixedly installed in the dust remover, a pulser is fixedly installed on the upper part of the rear wall of the dust remover, an air inlet pipeline is fixedly connected to the middle part of the left wall of the dust remover, a filter device is arranged at the position corresponding to the air inlet pipeline in the dust remover, an exhaust fan is fixedly installed on the upper part of the right wall of the dust remover, an exhaust port is arranged on the top surface of the exhaust fan, a motor is fixedly installed on the middle part of the side wall of the exhaust fan, a lead outlet hopper is arranged on the left bottom surface of the dust remover, a dust outlet hopper is arranged on the right bottom surface of the dust remover, and a transmission device is arranged on the output shaft of the motor.

[0006] Further, the filter device comprises a fixed box, a heating coil, a clamping block and a clamping groove, a fixed box is fixedly connected to the position corresponding to the air inlet pipeline on the inner side wall of the dust remover, a heating coil is fixedly installed in the fixed box, the preset temperature of the heating coil is 350 DEG C, the air inlet pipeline is in communication with the inside of the fixed box, a clamping block is fixedly connected to the bottom surface of the fixed box, and a clamping groove is clamped to the bottom of the fixed box through the clamping block, and the clamping groove is in communication with the fixed box.

[0007] Further, a cylindrical receiving net is arranged in the inside of the clamping groove, two discharge pipes are fixedly and symmetrically connected to the bottom surface of the cylindrical receiving net, the bottom parts of the two discharge pipes protrude from the bottom surface of the clamping groove, and the two discharge pipes are fixedly connected with the clamping groove, two symmetric guide plates are fixedly connected to the top opening of the cylindrical receiving net, and the two guide plates are directly below the heating coil.

[0008] Further, a through hole is formed in the middle part of the right side wall of the clamping groove, a guide pipe is fixedly connected to the inner side wall of the through hole, an air outlet hole is formed in the top surface of the guide pipe, and cooling water is contained in the clamping groove and the guide pipe.

[0009] Further, a spiral blade is rotatably connected to the inside of the guide pipe, a rotating shaft is fixedly connected to the middle part of the right end of the spiral blade, and a second belt pulley is fixedly sleeved to the middle part of the outer surface of the rotating shaft.

[0010] Further, the left end of the spiral blade is fixedly connected with a reciprocating screw rod, the left end of the reciprocating screw rod extends into the inside of the cylindrical receiving net, and the reciprocating screw rod is rotationally connected with the cylindrical receiving net, a magnetic plate is sleeved on the outer surface of the reciprocating screw rod inside the cylindrical receiving net, the outer surface of the magnetic plate is in contact with the inner surface of the cylindrical receiving net, an electromagnetic coil is fixedly arranged on the outer surface of the cylindrical receiving net, a warning lamp is fixedly arranged on the side wall of the dust collector corresponding to the clamping groove, the output end of the electromagnetic coil is electrically connected with the warning lamp through a wire, the electromagnetic coil is in the magnetic field range of the magnetic plate and is in the moving range of the magnetic plate.

[0011] Further, the conduit is communicated with the clamping groove, the horizontal plane of the cooling water in the clamping groove is higher than the lowest part of the cylindrical receiving net, the upper opening of the discharge pipe is communicated with the inside of the cylindrical receiving net, and the lower opening of the discharge pipe is communicated with the lead discharge hopper.

[0012] Further, the transmission device comprises a first belt pulley and a transmission belt, the output end of the motor is fixedly sleeved with the first belt pulley, the same transmission belt is sleeved between the first belt pulley and a second belt pulley, and the rotating shaft is transmissionally connected with the side wall of the dust collector.

[0013] The application provides a lead-containing flue gas dust removal and purification device, which comprises a fixed box, a heating coil and a clamping groove.

[0014] When the lead in the flue gas is removed by melting, the air pressure in the fixed box increases as the flue gas continuously enters the inside of the fixed box, so that the flue gas after lead removal enters the cooling water in the clamping groove to form bubbles in the cooling water.

[0015] At the same time, since the clamping groove contains cooling water, the molten lead exchanges heat with the cooling water after entering the cooling water, so that the cooling water forms water vapor.

[0016] Secondly, by designing the first pulley, the second pulley, the transmission belt, the rotating shaft and the spiral blade, when the exhaust fan is running, the motor rotates with the first pulley, the first pulley drives the second pulley and the rotating shaft through the transmission belt, and the rotating shaft rotates with the spiral blade in the duct, the rotating spiral blade can prevent lead particles from entering the duct, and the rotation of the spiral blade can stir the cooling water in the duct, so that the water vapor formed by the cooling water is more uniform, and the dust removal efficiency is improved.

[0017] With the rotation of the spiral blade, the spiral blade rotates with the reciprocating screw rod, and the reciprocating screw rod rotates with the magnetic plate to make the magnetic plate reciprocate in the cylindrical receiving net, and the reciprocating magnetic plate pushes the lead particles in the cylindrical receiving net into the discharge pipe, and finally discharges through the lead discharge hopper, which is convenient for collecting lead particles and reusing lead particles after collection, reducing resource waste.

[0018] Secondly, by cooperating the reciprocating screw rod with the magnetic plate, when the magnetic plate reciprocates in the cylindrical receiving net, the magnetic plate and the electromagnetic coil cooperate to generate an induced current in the electromagnetic coil. If the cooling water in the clamping groove is sufficient, the cooling water will exert a resistance on the magnetic plate when the magnetic plate moves, so that the moving speed of the magnetic plate is reduced. At this time, the induced current generated between the magnetic plate and the electromagnetic coil is not enough to supply the warning light to emit light. If the water level of the cooling water is lower than the bottom of the cylindrical receiving net, the cooling water cannot exert a resistance on the magnetic plate, so that the reciprocating speed of the magnetic plate increases, and the current generated by the electromagnetic coil acts on the warning light and makes the warning light emit light. Therefore, the workers can add cooling water to the inside of the clamping groove according to the light emission of the warning light, so that the warning light plays a prompting role for the workers. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0020] Referring to the drawings, the present disclosure can be more clearly understood according to the following detailed description, in which: Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the internal structure of the dust collector of the present application; Figure 3 It is a schematic diagram of the rear view structure of the dust collector of the present application; Figure 4 It is a schematic diagram of the structure of the fixed box of the present application; Figure 5 It is a schematic diagram of the internal structure of the fixed box of the present application; Figure 6 It is a schematic diagram of the internal structure of the clamping groove of the present application; Figure 7 It is the schematic diagram of the internal structure of the catheter of the application; Figure 8 It is the schematic diagram of the structure of the cylindrical receiving net of the application.

[0021] Wherein: 1, support frame; 2, dust collector; 3, sealing cover; 4, dust cloth bag; 5, pulse; 6, air inlet pipe; 61, fixed box; 62, heating coil; 63, clamping block; 64, clamping groove; 641, through hole; 642, guide pipe; 643, air outlet; 644, spiral blade; 645, rotating shaft; 646, second pulley; 647, reciprocating screw; 648, magnetic plate; 649, electromagnetic coil; 650, warning light; 65, cylindrical receiving net; 66, discharge pipe; 67, guide plate; 7, exhaust fan; 8, exhaust port; 9, motor; 91, first pulley; 92, transmission belt; 10, lead discharge hopper; 11, dust discharge hopper. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-8 A lead-containing flue dust dust removal and purification device, comprising a support frame 1, a dust collector 2 is fixedly installed on the upper part of the support frame 1, a sealing cover 3 is hingedly connected to the top surface of the dust collector 2, a dust cloth bag 4 is fixedly installed in the dust collector 2, a pulse 5 is fixedly installed on the upper part of the rear side wall of the dust collector 2, the output end of the pulse 5 is connected to the dust cloth bag 4 through a connecting pipe, so that the pulse 5 can perform dust removal on the dust cloth bag 4 through pulse gas, a gas inlet pipe 6 is fixedly connected to the middle part of the left side wall of the dust collector 2, a filter device is arranged in the dust collector 2 corresponding to the gas inlet pipe 6, an exhaust fan 7 is fixedly installed on the upper part of the right side wall of the dust collector 2, an exhaust port 8 is arranged on the top surface of the exhaust fan 7, so that the filtered gas can be discharged and collected through the exhaust port 8, a motor 9 is fixedly installed on the middle part of the side wall of the exhaust fan 7, a lead discharge hopper 10 is arranged on the bottom surface of the left side of the dust collector 2, a dust discharge hopper 11 is arranged on the bottom surface of the right side of the dust collector 2, and a transmission device is arranged on the output shaft of the motor 9.

[0024] Please refer to Figures 1-8The filtering device comprises a fixing box 61, a heating coil 62, a clamping block 63 and a clamping groove 64. The inner side wall of the dust collector 2 is fixedly connected with the fixing box 61 at the corresponding position of the air inlet pipeline 6. The heating coil 62 is fixedly installed in the fixing box 61. The preset temperature of the heating coil 62 is 350 degrees Celsius, which ensures that the lead in the flue gas forms a molten state after being heated and drops. The air inlet pipeline 6 is in communication with the inside of the fixing box 61, so that the lead-containing flue gas can directly enter the inside of the fixing box 61 for heating and lead removal. The bottom surface of the fixing box 61 is fixedly connected with the clamping block 63. The bottom of the fixing box 61 is clamped with the clamping groove 64 through the clamping block 63. The clamping groove 64 is in communication with the fixing box 61, which ensures that the dropped lead directly falls into the inside of the clamping groove 64.

[0025] Please refer to Figures 1-8 The inside of the clamping groove 64 is provided with a cylindrical receiving net 65. The bottom surface of the cylindrical receiving net 65 is fixedly and symmetrically connected with two discharge pipes 66. The bottom of the two discharge pipes 66 extends out of the bottom surface of the clamping groove 64, and the two discharge pipes 66 are fixedly connected with the clamping groove 64. The top surface of the cylindrical receiving net 65 is fixedly connected with two symmetrical guide plates 67 at the opening. The two guide plates 67 are directly below the heating coil 62. The guide plates 67 are used to guide the lead in a molten state into the cylindrical receiving net 65 for collection.

[0026] Please refer to Figures 1-8 A through hole 641 is formed in the middle of the right side wall of the clamping groove 64. A guide pipe 642 is fixedly connected to the inner side wall of the through hole 641. An air outlet hole 643 is formed in the top surface of the guide pipe 642. The clamping groove 64 and the guide pipe 642 contain cooling water, which facilitates heat exchange between the cooling water and the lead in a molten state, promotes the formation of lead particles, and forms water vapor after heat exchange, which is discharged through the air outlet hole 643 and acts on the dust inside the dust collector 2, so that the dust forms lumps after being exposed to water vapor and falls off, preventing dust from flying.

[0027] Please refer to Figures 1-8 A spiral blade 644 is rotatably connected to the inside of the guide pipe 642. A rotating shaft 645 is fixedly connected to the middle of the right end of the spiral blade 644. A second belt pulley 646 is fixedly sleeved to the middle of the outer surface of the rotating shaft 645. The rotation of the spiral blade 644 prevents lead particles from entering the inside of the guide pipe 642.

[0028] Please refer to Figures 1-8The middle of the left end of the spiral blade 644 is fixedly connected with a reciprocating screw rod 647, the left end of the reciprocating screw rod 647 extends into the inside of the cylindrical receiving net 65, and the reciprocating screw rod 647 is rotatably connected between the cylindrical receiving net 65, a magnetic plate 648 is sleeved on the outer surface of the reciprocating screw rod 647 inside the cylindrical receiving net 65, the outer surface of the magnetic plate 648 is in contact with the inner surface of the cylindrical receiving net 65, the reciprocating movement of the magnetic plate 648 causes the lead particles in the cylindrical receiving net 65 to be scraped into the discharge pipe 66 for transmission, facilitating the collection of lead particles, the outer surface of the cylindrical receiving net 65 is fixedly provided with an electromagnetic coil 649, the side wall of the dust collector 2 is fixedly provided with a warning lamp 650 corresponding to the clamping groove 64, the output end of the electromagnetic coil 649 is electrically connected with the warning lamp 650 through wires, facilitating the current generated by the electromagnetic effect of the electromagnetic coil 649 acting on the warning lamp 650, the electromagnetic coil 649 is in the magnetic field range of the magnetic plate 648, and the electromagnetic coil 649 is in the moving range of the magnetic plate 648.

[0029] Please refer to Figures 1-8 The catheter 642 is connected with the clamping groove 64, the horizontal plane of the cooling water in the clamping groove 64 is higher than the lowest part of the cylindrical receiving net 65, so that the cooling water in the clamping groove 64 can cool the molten lead in the cylindrical receiving net 65, the upper opening of the discharge pipe 66 is communicated with the inside of the cylindrical receiving net 65, and the lower opening of the discharge pipe 66 is communicated with the lead discharge hopper 10, facilitating the lead particles to be discharged and collected through the lead discharge hopper 10, and reducing the waste of resources.

[0030] Please refer to Figures 1-8 The transmission device includes a first belt pulley 91 and a transmission belt 92, the output end of the motor 9 is fixedly sleeved with the first belt pulley 91, the same transmission belt 92 is sleeved between the first belt pulley 91 and the second belt pulley 646, so that the exhaust fan 7 can be driven to rotate the rotating shaft 645 through the transmission belt 92 when the exhaust fan 7 operates, the rotating shaft 645 is transmissionally connected between the side wall of the dust collector 2, and the guide pipe 642 is communicated with the inner cavity of the dust collector 2 through the air outlet hole 643.

[0031] Working principle: When the lead-containing flue gas needs to be dedusted and purified, the lead-containing flue gas is introduced into the fixed box 61 through the air inlet pipeline 6, then the pulse device 5 and the heating coil 62 are opened, and the motor 9 is also opened at the same time, the motor 9 drives the exhaust fan 7 to operate, so that the purified flue gas is discharged through the exhaust port 8 and collected, in this process, since the lead-containing flue gas directly enters the inside of the fixed box 61, then the lead-containing flue gas is heated by the heating coil 62, since the preset temperature of the heating coil 62 is 350 degrees Celsius, and the melting point of lead is 327.46 degrees Celsius, so that the lead in the lead-containing flue gas is heated to above the melting point temperature, thereby forming molten lead, and then dropping on the cylindrical receiving net 65, and the cooling water in the clamping groove 64 is used to cool the molten lead, thereby forming lead particles, this design can effectively remove the metal lead in the lead-containing flue gas, prevent the lead in the flue gas from being mixed with dust to block the dedusting cloth bag 4, secondly, when the lead in the flue gas is removed by melting, as the flue gas continuously enters the inside of the fixed box 61, the air pressure in the fixed box 61 increases, so that the flue gas after lead removal enters the cooling water in the clamping groove 64 to form bubbles in the cooling water, most of the impurities in the flue gas can be removed after filtering through the cooling water, improve the dust removal effect, at the same time, since there is cooling water in the clamping groove 64, and the molten lead enters the cooling water and exchanges heat with the cooling water, so that the cooling water forms water vapor, the water vapor is transmitted through the conduit 642 and finally discharged through the air outlet 643, and the dust on the dedusting cloth bag 4 is scattered in the inside of the dust collector 2 after being impacted by the pulse device 5, the water vapor discharged through the air outlet 643 acts on the dust in the inside of the dust collector 2, so that the dust is adsorbed and falls by the water vapor, which can prevent the dedusting cloth bag 4 from being blocked by dust, secondly, by designing the first pulley 91, the second pulley 646, the transmission belt 92, the rotating shaft 645 and the spiral blade 644, when the exhaust fan 7 operates, the motor 9 rotates, the motor 9 drives the first pulley 91 to rotate, the first pulley 91 drives the second pulley 646 and the rotating shaft 645 to rotate through the transmission belt 92, and the rotating shaft 645 drives the spiral blade 644 to rotate in the conduit 642, the rotating spiral blade 644 can prevent lead particles from entering the conduit 642, and the rotation of the spiral blade 644 can stir the cooling water in the conduit 642, so that the water vapor formed by the cooling water is more uniform, improving the dust removal efficiency, as the spiral blade 644 rotates, the spiral blade 644 drives the reciprocating screw 647 to rotate, the reciprocating screw 647 cooperates with the magnetic plate 648 when rotating, so that the magnetic plate 648 makes reciprocating motion in the cylindrical receiving net 65, the reciprocating magnetic plate 648 pushes the lead particles in the cylindrical receiving net 65 into the discharge pipe 66, and finally is discharged through the lead outlet 10, which is convenient for the collection of lead particles, and the collected lead particles can be used again, reducing resource waste, secondly, by cooperating the reciprocating screw 647 with the magnetic plate 648, when the magnetic plate 648 makes reciprocating motion in the cylindrical receiving net 65,With the cooperation between the magnetic plate 648 and the electromagnetic coil 649, the electromagnetic coil 649 will generate current due to electromagnetic effect. If the cooling water inside the card slot 64 is sufficient, the cooling water will exert resistance on the magnetic plate 648 when the magnetic plate 648 moves, causing the moving speed of the magnetic plate 648 to decrease. At this time, the induced current generated between the magnetic plate 648 and the electromagnetic coil 649 is insufficient to supply the warning light 650 to emit light. If the water level of the cooling water is lower than the bottom of the cylindrical receiving net 65, the cooling water cannot exert resistance on the magnetic plate 648, causing the speed of the reciprocating movement of the magnetic plate 648 to increase. The current generated by the electromagnetic coil 649 will act on the warning light 650 and cause the warning light to emit light. Therefore, the worker can add cooling water to the inside of the card slot 64 according to the light emission of the warning light 650, so as to use the warning light 650 to prompt the worker. When the smoke filtering is completed, the dust will be agglomerated due to water vapor and then discharged and collected through the dust discharge hopper 11. The purified smoke is discharged and collected through the exhaust port 8 on the exhaust fan 7.

Claims

1. A dust removal and purification device for lead-containing flue gas, comprising a support frame (1), characterized in that: A dust collector (2) is fixedly installed on the upper part of the support frame (1). A sealing cover (3) is hinged to the top surface of the dust collector (2). A dust collector bag (4) is fixedly installed inside the dust collector (2). A pulse generator (5) is fixedly installed on the upper part of the rear side wall of the dust collector (2). An air inlet pipe (6) is fixedly connected to the middle of the left side wall of the dust collector (2). A filter device is provided inside the dust collector (2) at the location corresponding to the air inlet pipe (6). An exhaust fan (7) is fixedly installed on the upper part of the right side wall of the dust collector (2). An exhaust port (8) is provided on the top surface of the exhaust fan (7). A motor (9) is fixedly installed on the middle of the side wall of the exhaust fan (7). A lead hopper (10) is provided on the left side of the bottom surface of the dust collector (2). A dust hopper (11) is provided on the right side of the bottom surface of the dust collector (2). A transmission device is provided on the output shaft of the motor (9).

2. The dust removal and purification device for lead-containing flue gas according to claim 1, characterized in that, The filtration device includes a fixed box (61), a heating coil (62), a locking block (63), and a locking slot (64). The inner wall of the dust collector (2) is fixedly connected to the corresponding position of the air inlet pipe (6). The heating coil (62) is fixedly installed inside the fixed box (61). The preset temperature of the heating coil (62) is 350 degrees Celsius. The air inlet pipe (6) is connected to the inside of the fixed box (61). The locking block (63) is fixedly connected to the bottom surface of the fixed box (61). The bottom of the fixed box (61) is connected to the locking slot (64) by the locking block (63). The locking slot (64) is connected to the fixed box (61).

3. The dust removal and purification device for lead-containing flue gas according to claim 2, characterized in that, The slot (64) is provided with a cylindrical receiving mesh (65). The bottom surface of the cylindrical receiving mesh (65) is fixed and symmetrically connected with two discharge pipes (66). The bottom of the two discharge pipes (66) extends out of the bottom surface of the slot (64) and both discharge pipes (66) are fixedly connected to the slot (64). The top surface opening of the cylindrical receiving mesh (65) is fixedly connected with two symmetrical guide plates (67). The two guide plates (67) are located directly below the heating coil (62).

4. The dust removal and purification device for lead-containing flue gas according to claim 3, characterized in that, A through hole (641) is provided in the middle of the right side wall of the slot (64). A conduit (642) is fixedly connected to the inner side wall of the through hole (641). An air outlet (643) is provided on the top surface of the conduit (642). Cooling water is contained in the slot (64) and the conduit (642).

5. The dust removal and purification device for lead-containing flue gas according to claim 4, characterized in that, The conduit (642) is rotatably connected to a spiral blade (644), and a rotating shaft (645) is fixedly connected to the middle of the right end of the spiral blade (644). A second pulley (646) is fixedly sleeved on the middle of the outer surface of the rotating shaft (645).

6. The dust removal and purification device for lead-containing flue gas according to claim 5, characterized in that, A reciprocating screw (647) is fixedly connected to the middle of the left end of the spiral blade (644). The left end of the reciprocating screw (647) extends into the interior of the cylindrical receiving mesh (65), and the reciprocating screw (647) and the cylindrical receiving mesh (65) are rotatably connected. A magnetic plate (648) is drivenly sleeved on the outer surface of the reciprocating screw (647) on the inner side of the cylindrical receiving mesh (65). The outer surface of the magnetic plate (648) is connected to the inner surface of the cylindrical receiving mesh (65). The cylindrical receiving mesh (65) is fixedly provided with an electromagnetic coil (649) on its outer surface. The side wall of the dust collector (2) is fixedly installed with a warning light (650) corresponding to the slot (64). The output end of the electromagnetic coil (649) is electrically connected to the warning light (650) through a wire. The electromagnetic coil (649) is within the magnetic field range of the magnetic plate (648) and within the moving range of the magnetic plate (648).

7. The dust removal and purification device for lead-containing flue gas according to claim 6, characterized in that, The conduit (642) is connected to the slot (64), the level of the cooling water inside the slot (64) is higher than the lowest point of the cylindrical receiving net (65), the upper opening of the discharge pipe (66) is connected to the interior of the cylindrical receiving net (65), and the lower opening of the discharge pipe (66) is connected to the lead hopper (10).

8. The dust removal and purification device for lead-containing flue gas according to claim 7, characterized in that, The transmission device includes a first pulley (91) and a transmission belt (92). The output end of the motor (9) is fixedly sleeved with the first pulley (91). The first pulley (91) and the second pulley (646) are connected by the same transmission belt (92). The rotating shaft (645) is connected to the side wall of the dust collector (2). The air outlet (643) connects the duct (642) to the inner cavity of the dust collector (2).

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