A copper smelting fume particle filtering device

Abstract

This invention discloses a copper smelting dust particle filtration device, comprising a tank body, a first partition plate and a second partition plate suspended by a tension spring inside the tank body, with filter bags fixed between them and separating a dust removal chamber and a clean air chamber. The tank body is equipped with an air inlet and slag discharge pipe communicating with the dust removal chamber and an exhaust pipe communicating with the clean air chamber. The slag discharge pipe is equipped with an on / off valve and a slag collection cylinder. The exhaust pipe is equipped with a volute and a drive motor, with the motor shaft connected to a first rotating shaft, on which an exhaust turbine is mounted. The second partition plate is equipped with a cleaning mechanism, including a support fork, a second rotating shaft, and a pressure differential clutch assembly. The pressure difference between the dust removal chamber and the clean air chamber drives a piston plate, causing a driven gear on a splined shaft to mesh with a drive gear on the first rotating shaft, thereby driving a cam to vibrate the filter bag and a striking rod to strike the filter bag. This device can automatically detect and clean filter bag blockage, ensuring continuous and stable filtration, and is suitable for the characteristics of copper smelting dust.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment technology, specifically to a copper smelting fume particle filtration device. Background Technology

[0002] In the copper smelting process, the generation of flue gas is closely related to the characteristics of the raw materials, high-temperature reactions, and changes in physical state. First, the raw materials for copper smelting (such as copper concentrate and scrap copper) may contain a large number of fine particles. These particles are easily carried by the airflow due to mechanical disturbances during feeding and stirring, forming dust. Second, under high-temperature conditions, some low-boiling-point impurities in the raw materials (such as lead and zinc) will evaporate into a gaseous state, and then condense into tiny solid particles in the relatively low-temperature area inside the furnace or when cooling outside the furnace, becoming part of the flue gas. In addition, a series of chemical reactions occur during the smelting process (such as the oxidation of sulfides to generate sulfur dioxide). The gas flow generated by the reaction will carry incompletely molten solid particles away from the surface of the melt. At the same time, the splashing and cooling of molten copper may also form fine debris. These particles are eventually discharged with the flue gas or dispersed in the working environment. Therefore, filtration devices are necessary to treat the flue gas before it is discharged.

[0003] In the prior art, a dust particle filtration device with publication number "CN109806682B" solves the problem of the inability to clean the filter screen in a timely manner in existing devices and achieves non-stop cleaning of the filter screen. Its technical solution includes: a tank body, the interior of which is divided into upper and lower chambers by a partition; an air inlet channel and a slag discharge channel respectively connected to the lower chamber; a first check valve connected to the air inlet channel; an exhaust channel connected to the upper chamber; a second check valve connected to the exhaust channel; a diaphragm placed in the upper chamber; the diaphragm being slidably connected to the tank body via a push rod; a spray nozzle placed between the partition and the diaphragm; and a filter screen mounted on the partition. This invention can achieve backwashing cleaning of the filter screen and auxiliary slag discharge. Simultaneously, a sliding ring drives the brush bristles to move up and down to automatically complete the cleaning of the filter screen, enabling non-stop cleaning.

[0004] However, existing technologies still have significant shortcomings, such as:

[0005] In existing technologies, the filter bag cleaning control of copper smelting dust particle filtration devices largely relies on operator experience or observation during shutdown. Even when electronic sensors (such as pressure sensors and dust concentration sensors) are used to detect the filter bag clogging status and trigger the cleaning mechanism via an electronic control system, the high temperature and high particle content of copper smelting dust cause dust to easily adhere to the detection end of the electronic sensors. This leads to decreased sensor sensitivity, distorted detection data, and difficulty in accurately determining the actual degree of filter bag clogging, resulting in problems such as "cleaning not triggered when it should be" or "cleaning triggered unnecessarily." Summary of the Invention

[0006] The purpose of this invention is to provide a copper smelting fume particle filtration device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A copper smelting dust particle filtration device includes a tank body, in which a first partition and a second partition are provided. The first partition is fixedly disposed in the lower middle part of the tank body, and the second partition is suspended at the top of the tank body by several tension springs. A filter bag is fixedly disposed between the first partition and the second partition. The tank body is divided into a dust removal chamber and a clean air chamber by the first partition, the filter bag and the second partition.

[0009] The tank body is provided with an air inlet pipe and a slag discharge pipe that are respectively connected to the dust removal chamber. An exhaust pipe connected to the clean air chamber is fixedly installed on the top of the tank body. A volute is fixedly installed on the exhaust pipe. A drive motor is fixedly installed on the volute. A first rotating shaft is fixedly connected to the shaft of the drive motor. An exhaust turbine is fixedly installed on the first rotating shaft.

[0010] The second partition is equipped with a cleaning mechanism for cleaning the filter bags.

[0011] Preferably, the cleaning mechanism includes several support forks disposed inside the tank body, a second rotating shaft is rotatably disposed on the support forks, a cam is fixedly disposed on the second rotating shaft, and several driven plates cooperating with the cam are fixedly disposed on the second partition plate. By rotating the cam, the second partition plate and the filter bag are driven to vibrate, thereby shaking off the dust on the filter bag. The second rotating shaft is driven to rotate by a differential pressure clutch assembly.

[0012] Preferably, the differential pressure clutch assembly includes a differential pressure cylinder fixed to the other end of several support forks. The differential pressure cylinder is coaxially arranged with the tank body. One end of the differential pressure cylinder is connected to a second partition plate through a bellows tube. Several guide support rods are fixedly arranged on the differential pressure cylinder. Several guide rods are slidably arranged on the guide support rods. A piston plate is fixedly arranged at one end of several guide rods. The piston plate is pushed to slide in the differential pressure cylinder by the pressure difference between the dust removal chamber and the clean air chamber.

[0013] The piston plate is coaxially arranged with the differential pressure cylinder and slidably disposed in the differential pressure cylinder via guide rods. A spring is sleeved on several of the guide rods, and the springs are disposed between the piston plate and the guide support rods.

[0014] A splined shaft is rotatably mounted on the piston plate, and a rotating sleeve is fixedly mounted on the other end of a plurality of guide support rods. The rotating sleeve is coaxially mounted with the differential pressure cylinder, and a splined cylinder is rotatably mounted in the rotating sleeve. The splined shaft is axially slidable in cooperation with the splined cylinder.

[0015] A first bevel gear is fixedly sleeved on the splined cylinder, and a second bevel gear is fixedly installed on one end of the second rotating shaft. The first bevel gear and the second bevel gear mesh and drive each other.

[0016] One end of the first rotating shaft extends toward the spline shaft and is coaxial with it. A drive gear is fixedly mounted on one end of the first rotating shaft, and a driven gear is fixedly mounted on one end of the spline shaft. The drive gear and the driven gear can cooperate to transmit power.

[0017] Preferably, a plurality of striking rods are rotatably mounted on the tank body, and a plurality of striking pieces are fixedly mounted on the striking rods in a spiral manner.

[0018] Preferably, the second rotating shaft extends in the direction of the striking rod, a third bevel gear is fixedly provided at the other end of the second rotating shaft, and a fourth bevel gear is fixedly provided on the striking rod, wherein the third bevel gear and the fourth bevel gear mesh and transmit power.

[0019] Preferably, a plurality of first support rods and second support rods are fixedly provided in the tank body, a bushing is fixedly provided on the first support rod, and the first rotating shaft is rotatably provided in the bushing;

[0020] The second support rod is connected between the differential pressure cylinder and the inner wall of the tank.

[0021] Preferably, the tension spring is disposed between the second partition and the tank body via a pull hook. A boss is fixedly disposed on the top of the tank body, and an adjusting bolt that penetrates the tank body is rotatably disposed in the boss. The pull hook located on the tank body is connected to the adjusting bolt through a threaded hole, and the tension of the tension spring can be adjusted by adjusting the adjusting bolt.

[0022] Preferably, a rib is fixedly provided on one side of the hook on the second partition.

[0023] Preferably, the slag discharge pipe is equipped with an on / off valve and a detachable slag collection cylinder.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The device automatically triggers the cleaning mechanism based on the pressure difference between the dust removal chamber and the clean air chamber. When the filter bag is covered with dust, causing a decrease in filtration efficiency, the pressure difference pushes the piston plate to move, causing the power transmission component to engage. This drives the second rotating shaft to vibrate the filter bag via a cam, and the striking rod drives the striking plate to strike the filter bag. The filter bag is efficiently cleaned through the dual action of vibration and striking. After cleaning, the pressure difference returns to normal, the spring pushes the piston plate to reset, and the power transmission is disconnected. Blockage detection, automatic cleaning, and reset standby cycles can be completed without manual intervention, avoiding device downtime caused by manual cleaning and ensuring the continuity and stability of the copper smelting dust filtration process.

[0026] 2. Different cam angles on the second rotating shaft cause the second partition to vibrate irregularly. This, combined with the spirally arranged striking plates on the striking rod, strikes the filter bag sidewalls from all directions, creating a synergistic cleaning effect. This effectively shakes off the dust adhering to different locations on the filter bag, resulting in a more thorough cleaning. On the other hand, the triggering and stopping of the cleaning mechanism are determined by the actual degree of clogging (pressure difference) of the filter bag. It only operates when the filter bag needs cleaning, avoiding unnecessary energy consumption and adapting to the real-time status of the filter bag. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the overall device of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal gas flow direction of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the differential pressure clutch assembly of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged view of point A in the image;

[0032] Figure 6 This is an enlarged view of point B in section 4 of the present invention;

[0033] Figure 7 This is an enlarged view of point C in section 4 of the present invention;

[0034] Figure 8 This is an enlarged view of point D in section 4 of the present invention;

[0035] Figure 9 This is a three-dimensional structural diagram of the support fork arrangement of the present invention;

[0036] Figure 10 This is a three-dimensional structural diagram of the cam and driven plate of the present invention.

[0037] In the diagram: 1. Tank body; 11. First baffle; 12. Second baffle; 121. Driven plate; 13. Dust removal chamber; 14. Clean air chamber; 15. Inlet pipe; 16. Slag discharge pipe; 161. On / off valve; 162. Slag collection cylinder; 17. Exhaust pipe; 171. Volute; 172. Drive motor; 173. First rotating shaft; 174. Exhaust turbine; 175. Drive gear disc; 18. Boss; 19. First support rod; 191. Bushing; 110. Second support rod; 2. Tension spring; 3. Filter bag; 4. 1. Support fork; 42. Second pivot; 421. Third bevel gear; 43. Cam; 441. Differential pressure cylinder; 442. Organ tube; 443. Guide support rod; 444. Guide rod; 445. Piston plate; 446. Spring; 447. Splined shaft; 4471. Driven gear plate; 448. Sleeve; 449. Splined cylinder; 4410. First bevel gear; 4411. Second bevel gear; 5. Striking rod; 51. Striking plate; 52. Fourth bevel gear; 6. Hook; 61. Rib plate; 7. Adjusting bolt. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-10 The present invention provides a technical solution:

[0040] like Figure 1-4 As shown, in the copper smelting dust particle filtration device, the tank body 1 serves as a load-bearing structure, and a first partition 11 is fixedly installed in the lower middle part of its interior. The top of the tank body 1 is supported by several tension springs 2 to suspend the second partition 12, that is, the two ends of the tension springs 2 are respectively connected to the top of the tank body 1 and the second partition 12.

[0041] Between the first partition 11 and the second partition 12, a removable and replaceable filter bag 3 is fixedly installed. The method of removing and replacing the filter bag 3 is a device well known in the art. It can be tightened by means of sealing ring, pressure ring bolt, etc., which will not be described in detail here. The three work together to divide the internal space of the tank 1 into two relatively independent chambers, namely the dust removal chamber 13 and the clean air chamber 14.

[0042] The tank body 1 is equipped with an air inlet pipe 15 and a slag discharge pipe 16 connected to the dust removal chamber 13. The air inlet pipe 15 is used to introduce the flue gas generated during the copper smelting process. The air inlet pipe 15 is connected to the top of the smelting furnace (the smelting furnace is not shown in the figure). Those skilled in the art can set up the air inlet pipe 15 based on experience and technical manuals. The slag discharge pipe 16 is used to discharge the dust and impurities shaken off during the cleaning of the filter bag 3. The slag discharge pipe 16 is equipped with an on / off valve 161 to control the opening and closing of the slag discharge pipe 16 and to prevent the exhaust gas from overflowing from the slag discharge pipe 16. A detachable slag collection cylinder 162 is also provided, which is specifically used to collect the shaken-off impurities.

[0043] Meanwhile, the top of the tank 1 is equipped with an exhaust pipe 17 that is connected to the clean air chamber 14. The clean gas filtered by the filter bag 3 will be discharged from the device through the exhaust pipe 17.

[0044] The flue gas generated during copper smelting enters the dust removal chamber 13 of the tank 1 through the air inlet pipe 15. The flue gas passes through the filter bag 3 in the dust removal chamber 13, and the dust particles are intercepted by the filter bag 3. The filtered clean gas enters the clean gas chamber 14 and is then discharged through the exhaust pipe 17.

[0045] As the device operates, dust and impurities will gradually accumulate on the filter bag 3. When cleaning is required, the cleaning mechanism shakes off the dust and impurities. These shaken-off impurities will fall into the slag discharge pipe 16 under the action of gravity and other forces. The impurities can be allowed to enter the slag collection cylinder 162 by opening the on / off valve 161. The slag collection cylinder 162 can be disassembled periodically to complete the cleaning of impurities, ensuring that the device continuously and efficiently filters copper smelting fumes.

[0046] like Figure 1 As shown, a vortex housing 171 is fixed on the exhaust pipe 17, and a drive motor 172 is mounted on the vortex housing 171. The shaft of the drive motor 172 is connected to a first rotating shaft 173, and an exhaust turbine 174 is fixed on the first rotating shaft 173. Simultaneously, a first support rod 19 and a second support rod 110 are fixed inside the tank body 1. The bushing 191 on the first support rod 19 supports the rotation of the first rotating shaft 173, and the second support rod 110 connects the differential pressure cylinder 441 to the inner wall of the tank body 1, providing a stabilizing effect. One end of the first rotating shaft 173 extends into the device, and a drive gear 175 is provided at the end to provide a power source for the subsequent cleaning mechanism.

[0047] like Figure 9 As shown, three support forks 41 are arranged in the inner wall of the tank body 1. The three support forks 41 are arranged in a circumferentially equidistant array on the inner wall of the tank body 1. The support forks 41 are Y-shaped, and their opening positions are used to make way for the rotation of the cam 43. These support forks 41 serve as the mounting carriers for the second rotating shaft 42. The second rotating shaft 42 is rotatably mounted on the support forks 41 and can rotate around its own axis.

[0048] A cam 43 is fixedly mounted on the shaft of the second rotating shaft 42. Correspondingly, a driven plate 121 is provided on the second partition 12 at the position corresponding to the cam 43. When the second rotating shaft 42 rotates, the cam 43 will perform a circular motion. During the motion, the cam 43 will periodically squeeze the driven plate 121. Since the driven plate 121 is fixedly connected to the second partition 12, this squeezing action will be transmitted to the second partition 12, causing the second partition 12 to vibrate, which in turn drives the filter bag 3 connected to the second partition 12 to vibrate, creating conditions for shaking off dust and impurities on the filter bag 3.

[0049] At the other end of the support fork 41, a differential pressure cylinder 441 is fixedly installed. The differential pressure cylinder 441 is arranged coaxially with the tank body 1. One end of the differential pressure cylinder 441 is connected to the second partition 12 through a bellows pipe 442. The bellows pipe 442 has the characteristic of being able to extend and deform within a small range. With its help, the dust removal chamber 13 can be connected to the differential pressure cylinder 441, and the pressure in the dust removal chamber 13 can be stably transmitted to the differential pressure cylinder 441. When the second partition 12 vibrates, the pressure in the differential pressure cylinder 441 is consistent with that in the dust removal chamber 13.

[0050] like Figure 5 As shown, a guide support rod 443 is installed on the differential pressure cylinder 441. The guide support rod 443 serves as a guide and has a guide hole on its upper part. A guide rod 444 can slide on the guide support rod 443. One end of the guide rod 444 is connected to a piston plate 445, which is coaxial with the differential pressure cylinder 441 and can slide inside the differential pressure cylinder 441. A spring 446 is sleeved on the guide rod 444, located between the piston plate 445 and the guide support rod 443. When the pressure difference between the dust removal chamber 13 and the clean air chamber 14 is normal, the spring 446 can push the piston plate 445 to reset.

[0051] A splined shaft 447 is rotatably mounted on the piston plate 445, and the splined shaft 447 can rotate relative to the piston plate 445. At the other end of the guide support rod 443, a rotating sleeve 448 is fixedly installed, and a splined cylinder 449 is rotatably arranged inside the rotating sleeve 448. The splined shaft 447 and the splined cylinder 449 are connected by an axial sliding fit, that is, the splined shaft 447 can move along the axial direction of the splined cylinder 449, and can also transmit torque.

[0052] A first bevel gear 4410 is fixedly mounted on the outer wall of the splined cylinder 449, while a second bevel gear 4411 is provided at one end of the second rotating shaft 42. The first bevel gear 4410 and the second bevel gear 4411 mesh with each other to form a gear transmission pair. When the splined cylinder 449 rotates, it drives the second rotating shaft 42 to rotate through the bevel gear transmission. In addition, a driven gear disk 4471 is provided at one end of the splined shaft 447. The driven gear disk 4471 can cooperate with the drive gear disk 175 on the first rotating shaft 173 for transmission. When the two mesh, the power of the first rotating shaft 173 can be transmitted to the second rotating shaft 42 in sequence through the drive gear disk 175, the driven gear disk 4471, the splined shaft 447, the splined cylinder 449, the first bevel gear 4410, and the second bevel gear 4411, realizing the effective transmission of power and providing a power source for the rotation of the second rotating shaft 42.

[0053] like Figure 4 As shown, several striking rods 5 are rotatably connected to the tank body 1, and each striking rod 5 can rotate around its own rotation center. Striking discs 51 are fixedly mounted on the rods of the striking rods 5 in a spiral arrangement. A second rotating shaft 42 extends towards the striking rods 5, and a third bevel gear 421 is provided at its extended end. Correspondingly, a fourth bevel gear 52 is provided on the striking rods 5, and the third bevel gear 421 and the fourth bevel gear 52 mesh with each other. When the second rotating shaft 42 rotates, it drives the striking rods 5 to rotate through the meshing of the third bevel gear 421 and the fourth bevel gear 52. During the rotation of the striking rods 5, the striking discs 51 on them continuously strike the side wall of the filter bag 3, playing an auxiliary cleaning role for the filter bag 3. Combined with the vibration of the filter bag 3 itself, it can more efficiently shake off the dust and impurities attached to the filter bag 3.

[0054] When dust adheres to the filter bag 3, causing a decrease in filtration efficiency, the pressure difference between the dust removal chamber 13 and the clean air chamber 14 increases. The negative pressure in the clean air chamber 14 and the high pressure in the dust removal chamber 13 together push the piston plate 445 to overcome the elastic force of the spring 446 and move towards the first rotating shaft 173, driving the spline shaft 447 to move synchronously until the driven gear 4471 on the spline shaft 447 meshes with the driving gear 175 of the first rotating shaft 173. At this time, the power of the drive motor 172 is transmitted to the spline shaft 447 through the first rotating shaft 173, the driving gear 175, and the driven gear 4471. Then, through the cooperation between the spline shaft 447 and the spline cylinder 449, the spline cylinder 449 is driven to rotate. The first bevel gear 4410 on the spline cylinder 449 drives the meshing second bevel gear 4411, and finally transmits the power to the second rotating shaft 42, causing the second rotating shaft 42 to rotate on the support fork 41.

[0055] When the second rotating shaft 42 rotates, the cam 43 on it rotates synchronously with the shaft, and the cam 43 periodically presses the driven plate 121 on the second partition 12. Since the angles of the multiple cams 43 are different, the second partition 12 will produce irregular vibration, which in turn drives the filter bag 3 connected to it to vibrate, causing the dust and impurities attached to the surface of the filter bag 3 to fall off due to vibration.

[0056] As the second rotating shaft 42 rotates, the third bevel gear 421 at its end drives the meshing fourth bevel gear 52 to rotate, which in turn drives the striking rod 5 to rotate. The striking plate 51 on the striking rod 5 rotates with the rod and continuously strikes the side wall of the filter bag 3 in a spiral trajectory. The external impact further enhances the dust removal effect and forms a synergistic effect with the vibration cleaning.

[0057] When the dust falls off the filter bag 3 and the filtration efficiency is restored, the pressure difference between the dust removal chamber 13 and the clean air chamber 14 decreases. The spring 446 pushes the piston plate 445 to reset, and the spline shaft 447 moves down accordingly. The driven gear plate 4471 disengages from the drive gear plate 175, the power transmission is interrupted, the second rotating shaft 42 stops rotating, and the vibration and knocking cleaning actions stop simultaneously, completing one automatic cleaning cycle.

[0058] During the differential pressure triggering process of the filter bag 3 cleaning mechanism, the pushing effect of the air pressure difference on the piston plate 445 is clearly feasible, which can be explained from two aspects: the generation logic of the pressure difference and the force balance relationship.

[0059] From the perspective of pressure difference generation, when a large amount of copper smelting dust and impurities adhere to the surface of filter bag 3, the resistance of gas passing through filter bag 3 increases significantly. At this time, a relatively high pressure is formed in dust removal chamber 13 due to the continuous entry of waste gas (dust cannot be discharged in time), while clean air chamber 14 maintains a stable negative pressure due to the continuous suction of exhaust turbine 174 (gas in clean air chamber 14 is continuously discharged). The pressure difference between the two will increase synchronously with the degree of blockage of filter bag 3. This pressure difference will directly act on piston plate 445. The negative pressure in clean air chamber 14 will pull piston plate 445 towards clean air chamber 14 (closer to the first rotating shaft 173), and the high pressure in dust removal chamber 13 will "push" piston plate 445 to move in the same direction, and the two will form a resultant force.

[0060] From the perspective of force balance, the reverse resistance of piston plate 445 mainly comes from the elastic force of spring 446 and the frictional force during its sliding. During design, the elastic force of spring 446 needs to be set to suit the normal filtration state (when the pressure difference is small, the elastic force of spring 446 can stably support piston plate 445, keeping driven gear plate 4471 separated from drive gear plate 175). However, when filter bag 3 is clogged to a preset degree, the pressure difference between dust removal chamber 13 and clean air chamber 14 will reach a preset threshold. At this point, the thrust generated by the pressure difference will completely cover the sum of the elastic force of spring 446 and the frictional force. On one hand, the copper smelting flue gas itself has a certain pressure; on the other hand, the suction effect of exhaust turbine 174 will enhance the negative pressure in clean air chamber 14. The pressure difference generated by the superposition of these two factors is sufficient to drive piston plate 445 to overcome resistance and slide, ultimately achieving the meshing of driven gear plate 4471 and drive gear plate 175, transmitting power to the cleaning mechanism.

[0061] Further settings, such as Figure 7 and Figure 8 As shown, the tension spring 2 connects the second partition 12 to the tank body 1 via the hook 6. A boss 18 is provided on the top of the tank body 1, and an adjusting bolt 7, which rotatably passes through the tank body 1, is installed inside the boss 18. The hook 6 on the tank body 1 is connected to the adjusting bolt 7 via a threaded hole. Tightening the adjusting bolt 7 adjusts the tension of the tension spring 2, thereby controlling the levelness of the second partition 12 and the progress of the filter bags 3. A rib 61 is provided on one side of the hook 6 on the second partition 12 to enhance the structural strength of the hook 6.

[0062] Working principle:

[0063] During normal filtration, the drive motor 172 starts, driving the first rotating shaft 173 and the exhaust turbine 174 to rotate, generating negative pressure in the exhaust turbine 174. At this time, the drive gear 175 idles, with no effective power transmitted to the cleaning mechanism. Copper smelting exhaust gas enters the dust removal chamber 13 through the inlet pipe 15, passes through the filter bag 3 (where dust and impurities are trapped), enters the clean air chamber 14, and is then discharged through the exhaust pipe 17 and the exhaust turbine 174. The tension spring 2 tightens the second partition 12, keeping the filter bag 3 in a taut state.

[0064] After long-term operation, dust and impurities accumulate on the filter bag 3, reducing filtration efficiency and increasing the pressure difference between the dust removal chamber 13 and the clean air chamber 14. The negative pressure in the clean air chamber 14 and the high pressure of the hot exhaust gas in the dust removal chamber 13 jointly push the piston plate 445 to overcome the elastic force of the spring 446 and move towards the first rotating shaft 173. The piston plate 445 drives the spline shaft 447 to move, causing the driven gear plate 4471 to mesh with the driving gear plate 175. The power of the first rotating shaft 173 is transmitted through the driving gear plate 175 → driven gear plate 4471 → spline shaft 447 → spline cylinder 449 → first bevel gear 4410. The first bevel gear 4410 drives the meshing second bevel gear 4411 to rotate, thereby causing the second rotating shaft 42 to rotate on the support fork 41.

[0065] When the second rotating shaft 42 rotates, the cam 43 periodically presses the driven plate 121. Due to the different angles of each cam 43, the second partition plate 12 vibrates irregularly, causing the filter bag 3 to vibrate and shake off the dust. At the same time, the third bevel gear 421 at the other end of the second rotating shaft 42 drives the fourth bevel gear 52 on the striking rod 5 to rotate. The rotation of the striking rod 5 causes the striking plate 51 to strike the side wall of the filter bag 3, enhancing the dust removal effect.

[0066] After the dust is shaken off, the air permeability of filter bag 3 is restored, and the pressure difference between dust chamber 13 and clean air chamber 14 decreases. The spring force of spring 446 exceeds the air pressure difference, pushing piston plate 445 back to its original position. Spline shaft 447 then moves downwards, disengaging drive gear plate 175 from driven gear plate 4471, and the cleaning mechanism stops operating. The tension of tension spring 2 can be adjusted by turning adjusting bolt 7 to suit the tension requirements of filter bag 3 under different operating conditions. During slag discharge, the on / off valve 161 is opened, and dust and impurities fall into slag collection cylinder 162. Slag collection cylinder 162 can be disassembled and cleaned periodically.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper smelting fume particle filtering device, comprising a tank (1), characterized in that: The tank (1) is provided with a first partition (11) and a second partition (12). The first partition (11) is fixedly installed in the lower middle part of the tank (1), and the second partition (12) is suspended at the top of the tank (1) by several tension springs (2). A filter bag (3) is fixedly installed between the first partition (11) and the second partition (12). The tank (1) is divided into a dust removal chamber (13) and a clean air chamber (14) by the first partition (11), the filter bag (3) and the second partition (12). The tank body (1) is provided with an air inlet pipe (15) and a slag discharge pipe (16) respectively connected to the dust removal chamber (13). The top of the tank body (1) is fixedly provided with an exhaust pipe (17) connected to the clean air chamber (14). The exhaust pipe (17) is fixedly provided with a vortex shell (171). The vortex shell (171) is fixedly provided with a drive motor (172). The shaft of the drive motor (172) is fixedly connected with a first rotating shaft (173). The first rotating shaft (173) is fixedly provided with an exhaust turbine (174). The second partition (12) is provided with a cleaning mechanism for cleaning the filter bag (3); The cleaning mechanism includes several support forks (41) arranged inside the tank (1). A second rotating shaft (42) is rotatably arranged on the support fork (41). A cam (43) is fixedly arranged on the second rotating shaft (42). Several driven plates (121) cooperating with the cam (43) are fixedly arranged on the second partition (12). By rotating the cam (43), the second partition (12) and the filter bag (3) are driven to vibrate, thereby shaking off the dust on the filter bag (3). The second rotating shaft (42) is driven to rotate by a differential pressure clutch assembly. The differential pressure clutch assembly includes a differential pressure cylinder (441) fixed to the other end of several support forks (41). The differential pressure cylinder (441) is coaxially arranged with the tank body (1). One end of the differential pressure cylinder (441) is connected to the second partition (12) through a bellows pipe (442). Several guide support rods (443) are fixedly arranged on the differential pressure cylinder (441). Several guide rods (444) are slidably arranged on the guide support rods (443). A piston plate (445) is fixedly arranged at one end of several guide rods (444). The piston plate (445) is pushed to slide in the differential pressure cylinder (441) by the pressure difference between the dust removal chamber (13) and the clean air chamber (14). The piston plate (445) is coaxially arranged with the differential pressure cylinder (441) and slidably arranged in the differential pressure cylinder (441) through the guide rod (444). A spring (446) is sleeved on a plurality of the guide rods (444), and the spring (446) is arranged between the piston plate (445) and the guide support rod (443). A splined shaft (447) is rotatably mounted on the piston plate (445), and a rotating sleeve (448) is fixedly mounted on the other end of a plurality of guide support rods (443). The rotating sleeve (448) is coaxially mounted with the differential pressure cylinder (441), and a splined cylinder (449) is rotatably mounted in the rotating sleeve (448). The splined shaft (447) is axially slidable in cooperation with the splined cylinder (449). The splined cylinder (449) is fixedly sleeved with a first bevel gear (4410), and a second bevel gear (4411) is fixedly installed on one end of the second rotating shaft (42). The first bevel gear (4410) and the second bevel gear (4411) mesh and drive each other. One end of the first rotating shaft (173) extends toward the spline shaft (447) and is coaxial with it. A drive gear disk (175) is fixedly provided at one end of the first rotating shaft (173), and a driven gear disk (4471) is fixedly provided at one end of the spline shaft (447). The drive gear disk (175) and the driven gear disk (4471) can cooperate to transmit power.

2. The copper smelting dust particle filtering device according to claim 1, characterized in that: The tank body (1) is rotatably provided with several striking rods (5), and several striking pieces (51) are fixedly provided on the striking rods (5) in a spiral manner.

3. The copper smelting dust particle filtering device according to claim 2, characterized in that: The second rotating shaft (42) extends toward the striking rod (5), and a third bevel gear (421) is fixedly provided at the other end of the second rotating shaft (42). A fourth bevel gear (52) is fixedly provided on the striking rod (5), and the third bevel gear (421) and the fourth bevel gear (52) mesh and drive each other.

4. The copper smelting dust particle filtering device according to claim 3, characterized in that: A plurality of first support rods (19) and second support rods (110) are fixedly provided in the tank body (1). A bushing (191) is fixedly provided on the first support rod (19), and the first rotating shaft (173) is rotatably provided in the bushing (191). The second support rod (110) is connected between the differential pressure cylinder (441) and the inner wall of the tank (1).

5. The copper smelting dust particle filtering device according to claim 4, characterized in that: The tension spring (2) is set between the second partition (12) and the tank (1) by a hook (6). A boss (18) is fixedly set on the top of the tank (1). An adjusting bolt (7) that passes through the tank (1) is rotatably set in the boss (18). The hook (6) on the tank (1) is connected to the adjusting bolt (7) through a threaded hole. The tension of the tension spring (2) can be adjusted by adjusting the bolt (7).

6. The copper smelting dust particle filtering device according to claim 1, characterized in that: A rib (61) is fixedly provided on one side of the hook (6) located on the second partition (12).

7. The copper smelting dust particle filtering device according to claim 1, characterized in that: The slag discharge pipe (16) is equipped with an on / off valve (161) and a detachable slag collection cylinder (162).

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