A composite molybdenum iron smelting waste gas purification treatment equipment

Abstract

This invention relates to the field of waste gas treatment, specifically a composite waste gas purification and treatment device for ferromolybdenum smelting. The invention includes a housing with two symmetrical chambers inside. Each chamber contains a bag filter assembly, and a symmetrical pulse assembly is positioned above the bag filter assembly. Below the pulse assembly, two symmetrical sealing cloths are connected via telescopic pipes. A rotating partition is rotatably connected between the bottoms of the two chambers. When one chamber is being cleaned, the other chamber continuously purifies the waste gas, ensuring that cleaning and purification do not interfere with each other, thus improving cleaning efficiency. Furthermore, the cleaned chamber experiences only unidirectional airflow, effectively preventing bag blockage and allowing the waste gas to pass more smoothly through the bag filter assembly, thereby improving the purification quality and efficiency.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment, specifically a composite waste gas purification and treatment device for ferromolybdenum smelting. Background Technology

[0002] The waste gas generated during the smelting of ferromolybdenum needs to be purified before it can be released into the atmosphere. Baghouse dust collectors are often used in the purification process. However, after a period of time, a lot of dust will adhere to the outer wall of the bag in the existing baghouse dust collector, which will affect the purification efficiency. Therefore, the bag needs to be cleaned. There are two existing cleaning methods for baghouse dust collectors: offline cleaning and online cleaning.

[0003] Offline cleaning refers to the process where the dust collector temporarily stops purifying the exhaust gas during cleaning, isolating the cleaning chamber from the dust-laden airflow. However, this method is suitable for companies that do not operate continuously 24 hours a day. Each time cleaning is performed, the machine must be shut down and production stopped, or the exhaust gas must be stored elsewhere. This is not suitable for most companies and causes inconvenience to production. Online cleaning refers to the process where the filter bags being cleaned continue to purify the exhaust gas while pulse cleaning is being performed. The pulse device emits a stronger airflow to impact the filter bags, causing the dust to detach from the bags. However, when the pulse device stops, the exhaust gas entering the area around the filter bags will affect the cleaning efficiency. Moreover, the airflow generated by the exhaust gas may cause the dust that has been detached to re-adhere to the surface of the filter bags, resulting in incomplete cleaning and affecting the subsequent exhaust gas purification efficiency and quality.

[0004] Chinese patent CN120001128A discloses an outdoor bag filter dust collector, including a housing with a dust removal mechanism inside. The design of the baffle and the mold plate effectively prevents dust from being discharged from the gap between the housing and the mold plate, avoiding dust leakage and improving filtration efficiency. The up-and-down vibration of the support plate, combined with the aeration effect of the nozzle, allows the dust on the bag body to be cleaned more thoroughly. Through the combination of vibration and aeration, the cleaning effect of the bag is improved and the service life of the bag is extended.

[0005] Chinese patent CN119746527A discloses a bag filter dust collector, including a bag filter dust collector mechanism, and further comprising: the bag filter dust collector mechanism being placed on the ground, and the bag filter dust collector mechanism being used for filtering and purifying dust-laden gas; this invention can solve the problems of cleaning sticky dust, filter bag damage, and the influence of gas source impurities, while improving cleaning efficiency, reducing operating resistance, improving filtration accuracy, reducing maintenance workload, and enhancing adaptability.

[0006] The aforementioned and similar existing technologies can enhance the dust removal effect of filter bags to some extent. However, in existing technologies, dust removal and exhaust gas purification are carried out in the same space, and the two processes affect each other. During dust removal, the exhaust gas entering the area around the filter bag may cause dust to accumulate again on the surface of the filter bag or cause blockage, reducing the dust removal effect. When the online dust removal pulse device is working, its airflow direction is opposite to the exhaust gas direction. There are two airflow directions in the chamber, which may accumulate exhaust gas and affect the entry of exhaust gas at the front end (such as the rotary smoke hood). Therefore, multiple countermeasures need to be set up. For example, a porous airflow distribution plate is set inside the equipment to evenly disperse the intake air and reduce the impact of local reverse airflow on the dynamic balance during dust removal. Alternatively, the main fan pressure can be reserved with a margin of 15% to 20% to ensure that the negative pressure of the front smoke hood can still be maintained under the instantaneous resistance peak of the pulse jet, preventing exhaust gas from accumulating. This also leads to increased equipment costs and structural complexity.

[0007] Therefore, the present invention provides a waste gas purification treatment device that can perform dust removal and purification simultaneously and independently, without affecting each other, thereby improving dust removal efficiency and thus improving purification efficiency and purification quality. Summary of the Invention

[0008] To address the problems of unstable, efficient, and continuous purification of waste gas and incomplete dust removal in existing technologies, a composite waste gas purification and treatment device for ferromolybdenum smelting has been designed.

[0009] The technical solution adopted by this invention to solve its technical problem is: a composite ferromolybdenum smelting waste gas purification and treatment device, including a housing, characterized in that: the housing is provided with two symmetrical chambers, each of the two chambers is provided with a bag filter assembly, a symmetrical pulse assembly is provided above the bag filter assembly, and two symmetrical sealing cloths are connected below the pulse assembly through a telescopic pipe, a rotating partition is rotatably connected between the bottoms of the two chambers, and a closed wheel that can rotate under the pulse airflow is provided at the bottom of each chamber. By controlling the rotation of the rotating partition, the bottom of one chamber is closed, and the sealing cloth is extended by the telescopic pipe to close the top of this chamber, thereby guiding the waste gas into the other chamber. The pulse assembly cleans the bag filter assembly in the closed chamber through a nozzle fixedly connected below the telescopic pipe, while the other chamber purifies the waste gas normally.

[0010] Furthermore, a fixed partition is fixedly connected to the inner wall of the box, which divides the interior of the box into two compartments. The lower surface of the fixed partition is in contact with the upper surface of the rotating partition, and several through holes are opened through the side surface of the fixed partition.

[0011] Furthermore, a sealing block is provided on the inner side wall of the box, so that the side wall of the rotating partition is in constant contact with the side wall of the sealing block during the rotation of the rotating partition.

[0012] Furthermore, the pulse assembly includes a flow divider shell, with an aerator connected to the top of the flow divider shell via a connecting pipe. The aerator is fixedly mounted on the upper surface of the housing. A dual-axis motor is mounted on the upper surface of the flow divider shell, with ball screws connected to both ends of the dual-axis motor. A guide rail is fixedly connected to the inner wall of the housing. First moving plates are slidably connected to both sides of the flow divider shell via ball screws and guide rails. Telescopic tubes are provided between both sides of the flow divider shell and the two first moving plates. A sealing cloth is fixedly connected to the lower part of the telescopic tube, and the two sides of the sealing cloth are fixedly connected to the side surfaces of the nozzle and the flow divider shell, with the nozzle penetrating through the sealing cloth.

[0013] Furthermore, the inner wall of the box is provided with two bag support assemblies. Each bag support assembly includes a support plate. The inner wall of the support plate is fixedly connected with several limiting posts. The support plate is slidably connected to a second movable plate through several limiting posts. The second movable plate is provided with a bag assembly. The outer surface of the limiting posts is sleeved with a first spring.

[0014] Furthermore, an auxiliary vibration assembly is fixedly connected to the lower part of the second movable plate. The lower part of the auxiliary vibration assembly is movably connected to the closed wheel, and the closed wheel is rotatably connected to the inner wall of the box through a one-way bearing.

[0015] Furthermore, the auxiliary vibration assembly includes two first connecting rods, the lower ends of the two first connecting rods are fixedly connected to a first connecting plate, a plurality of second springs are fixedly connected to the lower surface of the first connecting plate, the first connecting plate is fixedly connected to a second connecting plate through the plurality of second springs, the lower surface of the second connecting plate is movably connected to a second connecting rod, and the lower end of the second connecting rod is eccentrically and rotatably connected to the closed wheel.

[0016] Furthermore, a conveying pipe is fixedly connected to the side surface of the housing, and an electrostatic precipitator and a rotary fume hood are fixedly connected to the housing through the conveying pipe.

[0017] Furthermore, a water spray ring is fixedly connected to the lower surface of the box, a water receiving box is provided at the bottom of the box, and two air outlet pipes are fixedly connected to the upper surface of the box.

[0018] The beneficial effects of this invention are:

[0019] (1) The present invention achieves seamless connection between dust removal and purification through independent compartment design, avoiding the interruption of exhaust gas treatment caused by the shutdown of traditional single-compartment equipment for dust removal, thus greatly improving the overall exhaust gas treatment efficiency of the equipment; it also solves the problem of high pressure accumulation of exhaust gas caused by the combined action of pulse components and air intake equipment during online dust removal, reducing the need to set up multiple response mechanisms in the equipment, thus reducing the cost of the equipment, simplifying the structure, and enhancing the stability.

[0020] (2) The dust removal efficiency of the present invention is significantly enhanced compared with the prior art. The closed chamber combined with the downward airflow design increases the dust removal rate to over 98%, which greatly reduces the risk of secondary dust generation compared with traditional bag dust collectors. In addition, the mechanical shaking of the auxiliary vibration component assists in dust removal, which reduces the adhesion of the outer wall of the bag and prevents the bag assembly from being blocked due to excessive dust accumulation. This ensures good air permeability and filtration performance of the bag assembly, thereby ensuring that the equipment is almost always in a highly efficient purification operation state.

[0021] (3) The present invention triggers the dust removal program through intelligent airflow monitoring (gas flow sensor), which avoids the filter bag from being damaged or reduced in purification efficiency due to dust accumulation and overload, thereby increasing the average service life of the filter bag assembly. By linking the controller with the rotating partition, ball screw and other components, the dust removal process is fully automated, and the need for manual intervention is effectively reduced. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is an overall schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the external appearance of the bag filter of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the internal structure of the bag filter of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the internal structure of the bag filter of the present invention from another direction;

[0027] Figure 5 A diagram showing the simultaneous purification of exhaust gases in two compartments;

[0028] Figure 6 A diagram showing the status of purifying exhaust gas in one compartment and cleaning dust in another;

[0029] Figure 7 This is a three-dimensional structural diagram of the pulse component of the present invention;

[0030] Figure 8 These are multi-angle views of the pulse component of the present invention;

[0031] Figure 9 This is a schematic diagram showing the position of the sealing block of the present invention;

[0032] Figure 10 for Figure 3 Enlarged view of point B in the middle;

[0033] Figure 11 for Figure 3 Enlarged view of point A in the middle;

[0034] Figure 12 This is a schematic diagram showing the rotation direction of the closed wheel of the present invention.

[0035] In the diagram: 1. Housing; 2. Pulse assembly; 201. Diverter shell; 202. Aerator; 203. Dual-shaft motor; 204. Ball screw; 205. Guide rail; 206. First moving plate; 207. Spray nozzle; 208. Telescopic pipe; 3. Bag support assembly; 301. Support plate; 302. Limiting post; 303. First spring; 304. Second moving plate; 4. Bag assembly; 5. Sealing wheel; 6. Auxiliary vibration assembly; 601. First connecting rod; 602. First connecting plate; 603. Second spring; 604. Second connecting plate; 605. Second connecting rod; 7. Rotary fume hood; 8. Conveyor pipe; 9. Electrostatic precipitator; 10. Water spray ring; 11. Water receiving box; 12. Air outlet pipe; 13. Fixed partition; 14. Rotating partition; 15. Through hole; 16. Sealing cloth; 17. Sealing block. Detailed Implementation

[0036] To make the technical means, technical features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example: Figures 1-12As shown, the composite ferromolybdenum smelting waste gas purification equipment of the present invention includes a housing 1. The housing 1 has two symmetrical compartments inside, allowing for separate cleaning of the bag filter assembly 4 in one compartment when cleaning is required, while the other compartment can continue to purify the waste gas normally. This separates cleaning and purification, avoiding the problem of low efficiency caused by the mutual interference between cleaning and purification in the traditional case where both are in one compartment. It also ensures uninterrupted purification of the waste gas, preventing interruptions to purification operations due to cleaning, and greatly improving the efficiency of waste gas treatment. Both compartments of the housing 1 are equipped with bag filter assemblies 4, so that when purifying the waste gas, the waste gas in the compartment passes through the bag filter assembly 4 and is filtered by the 4 filters, trapping dust on the outer surface of the filter bags. The purified gas then passes through the filter bags into the interior of the bag filter assembly 4 and is discharged from the upper outlet pipe 12. Above the bag assembly 4, there are symmetrical pulse assemblies 2. Below the pulse assemblies 2, there are two symmetrical sealing cloths 16 connected by telescopic pipes 208. A rotating partition 14 is rotatably connected between the bottoms of the two chambers. Each chamber bottom is equipped with a closed wheel 5 that can rotate with the pulse airflow. By controlling the rotation of the rotating partition 14, the bottom of one chamber is closed, and the sealing cloth 16 is extended by the telescopic pipe 208 to close the top of this chamber. The pulse assembly 2 cleans the bag assembly 4 in the closed chamber through the nozzle 207 fixedly connected below the telescopic pipe 208. At the same time, the other chamber is purifying the exhaust gas normally, realizing efficient cleaning and continuous purification at the same time, and the cleaning and purification do not affect each other. The closed chamber combined with the downward airflow design increases the dust removal rate to over 98%, reducing the risk of secondary dust and dust re-adhesion compared to traditional bag dust collectors.

[0038] In this embodiment, the pulse component 2 and the sealing cloth 16 are disposed on the top of the bag component 4, so that the seal is in contact with the purified exhaust gas, which will not contaminate the seal, and also increases the life of the seal and effectively reduces the replacement frequency.

[0039] Specifically, when the rotating partition 14 is in a vertical position, the exhaust gas delivered by the conveying pipe 8 can simultaneously enter the two compartments inside the housing 1. The two compartments purify the exhaust gas simultaneously. When the purification efficiency of one compartment decreases to a certain level, the sealing cloth 16 and the rotating partition 14 are controlled to seal the top and bottom of this compartment, preventing the exhaust gas delivered by the conveying pipe 8 from entering this compartment. The bag assembly 4 of this compartment is cleaned by the pulse assembly 2, while the other compartment filters the exhaust gas normally. This achieves continuous purification of exhaust gas without adjusting the intake air volume while cleaning, and avoids the cleaning and purification affecting each other.

[0040] In this embodiment, a fixed partition 13 is fixedly connected to the inner wall of the housing 1, dividing the interior of the housing 1 into two compartments. The lower surface of the fixed partition 13 is in contact with the upper surface of the rotating partition 14. Several through holes 15 are provided through the side surface of the fixed partition 13. A sealing block 17 is provided on the inner side wall of the housing 1, so that the side wall of the rotating partition 14 is in contact with the side wall of the sealing block 17 during the rotation process, thereby ensuring the airtightness of the compartment. The two compartments are separated by the fixed partition 13 and the rotating partition 14, ensuring that the work inside the two compartments does not interfere with each other, so that when one compartment is being cleaned, the other compartment can continue to purify the exhaust gas.

[0041] In this embodiment, the pulse assembly 2 includes a diversion shell 201. An aerator 202 is connected to the top of the diversion shell 201 via a connecting pipe, and the aerator 202 is fixedly installed on the upper surface of the housing 1. A dual-axis motor 203 is installed on the upper surface of the diversion shell 201. Both ends of the dual-axis motor 203 are connected to ball screws 204. A guide rail 205 is fixedly connected to the inner wall of the housing 1. First moving plates 206 are slidably connected to both sides of the diversion shell 201 via ball screws 204 and guide rails 205. A telescopic tube 208 is provided between both sides of the diversion shell 201 and the two first moving plates 206. A sealing cloth 16 is fixedly connected to the bottom of the telescopic tube 208, and the two sides of the sealing cloth 16 are fixedly connected to the nozzle 207 and the side surface of the diversion shell 201, respectively. The nozzle 207 penetrates the sealing cloth 16.

[0042] Specifically, the dual-axis motor 203 drives the ball screw 204 to rotate, and the guide rail 205 guides the first moving plate 206, causing the first moving plate 206 to slide away from or towards the diversion shell 201, thereby causing the telescopic tube 208 to extend or retract, and causing the sealing cloth 16 to extend or retract, thereby controlling the top of the compartment to be in a closed or open state, so that the compartment can switch freely between dust removal and purification.

[0043] In this embodiment, an auxiliary vibration assembly 6 is fixedly connected to the lower part of the second movable plate 304. The lower part of the auxiliary vibration assembly 6 is movably connected to the closed wheel 5, and the closed wheel 5 is rotatably connected to the inner wall of the housing 1 through a one-way bearing. Figure 12As shown, the one-way bearing design ensures that the closed wheels 5 at the bottom of the two compartments can only rotate downwards and towards each other to discharge ash, preventing the closed wheels 5 from reversing. This ensures that the closed wheels 5 inside the compartments will not rotate during normal air purification. The auxiliary vibration assembly 6 includes two first connecting rods 601. A first connecting plate 602 is fixedly connected to the lower ends of the two first connecting rods 601. Several second springs 603 are fixedly connected to the lower surface of the first connecting plate 602. A second connecting plate 604 is fixedly connected to the first connecting plate 602 via the several second springs 603. A second connecting rod 605 is movably connected to the lower surface of the second connecting plate 604, and the lower end of the second connecting rod 605 is eccentrically and rotatably connected to the closed wheel 5, so that dust falling during cleaning falls onto the closed wheel 5, and cooperates with the pulse assembly 2 to produce... The airflow causes the closed wheel 5 to rotate in one direction, expelling dust from the chamber. Due to the downward airflow generated in the closed chamber and the presence of the through hole 15, the purified gas in another normally treated exhaust gas chamber can enter the closed chamber through the through hole 15 and flow downward. This airflow carries the dust knocked off by the pulse component 2, forming a downward airflow and driving the closed wheel 5 to rotate continuously, expelling as much dust as possible and reducing the probability of dust re-attachment. This drives the various mechanisms of the auxiliary vibration component 6 to transmit power and vibrate, thereby driving the second moving plate 304 and the bag assembly 4 to vibrate, thus increasing the dust removal effect on the outer wall of the bag assembly 4, preventing the bag assembly 4 from being blocked due to excessive dust accumulation, and ensuring the good air permeability and filtration performance of the bag assembly 4.

[0044] Specifically, by setting up the enclosed wheel 5 and the auxiliary vibration component 6, the bag assembly 4 can be assisted in vibration during dust removal, thereby increasing the vibration of the bag assembly 4. This allows more dust to be vibrated off, preventing dust accumulation and blockage of the bag assembly 4, extending the service life of the bag assembly 4, and reducing the maintenance cost of the equipment.

[0045] In this embodiment, the inner wall of the box 1 is provided with two bag support assemblies 3. The bag support assembly 3 includes a support plate 301. A plurality of limiting posts 302 are fixedly connected to the inner wall of the support plate 301. The support plate 301 is slidably connected to a second moving plate 304 through the plurality of limiting posts 302. The bag assembly 4 is provided on the second moving plate 304. A first spring 303 is sleeved on the outer surface of the limiting posts 302 so that the second moving plate 304 can be driven to vibrate together with the auxiliary vibration assembly 6 through the first spring 303. Under the strong impact of the pulse assembly 2, the high-frequency vibration effect of the bag assembly 4 is increased.

[0046] In this embodiment, a conveying pipe 8 is fixedly connected to the side surface of the housing 1. A water seal section is provided in the conveying pipe 8 to remove particles through inertial settling, thereby performing primary purification of the exhaust gas. An electrostatic precipitator 9 and a rotary fume hood 7 are fixedly connected to the housing 1 through the conveying pipe 8 so that the exhaust gas generated during ferromolybdenum smelting can be absorbed by the rotary fume hood 7. The electrostatic precipitator 9 further removes small particles from the exhaust gas filtered by the water seal section. The electrostatic precipitator 9, combined with the multi-stage filtration system of the bag assembly 4, significantly increases the PM2.5 interception efficiency and SO2 removal rate.

[0047] In this embodiment, a water spray ring 10 is fixedly connected to the lower surface of the housing 1, and a water collection box 11 is provided below the housing 1. The water sprayed by the water spray ring 10 forms a water curtain to seal the passing dust, thereby preventing secondary dust generation. Subsequently, the dust falls into the water collection box 11 along with the water and is then discharged to a designated location through a water pipe. Secondly, two air outlet pipes 12 are fixedly connected to the upper surface of the housing 1. Gas flow sensors are installed on the air outlet pipes 12 to monitor the passing airflow. When the passing airflow decreases to a predetermined value, the corresponding compartment is cleaned to prevent blockage and ensure continuous exhaust gas purification. The design of the water spray ring 10 increases the dust moisture content to more than 30%, effectively suppressing secondary dust generation. The slurry collected by the water collection box 11 can be used to extract ferromolybdenum dust for reuse, realizing resource recovery value (if calculated based on an annual production scale of 10,000 tons, the annual resource recovery value can be approximately RMB 1.2 million; this data is for estimation reference only).

[0048] Meanwhile, the design concept of this equipment can be extended to high-temperature and high-dust scenarios such as tungsten and molybdenum smelting and steel sintering. Through modular compartment combinations, it can meet the customized needs of enterprises of different sizes, and the investment payback period is greatly shortened compared with traditional electrostatic dust removal equipment.

[0049] Working principle: The waste gas generated during ferromolybdenum smelting is captured and controlled by the rotary fume hood 7. Then, the waste gas is conveyed to the electrostatic precipitator 9 through the conveyor pipe 8. When the waste gas passes through the water seal section of the conveyor pipe 8, particles are removed by inertial settling. The electrostatic precipitator 9 then further removes small particles. Finally, the waste gas passes through another section of the conveyor pipe 8 and enters the housing 1 from the bottom. The equipment will exhibit the following states during operation:

[0050] (1) When the two compartments are purifying exhaust gas at the same time: the motor controls the rotating partition 14 to be in a vertical state so that the exhaust gas can enter the two compartments at the same time. Since the bag support assembly 3 and the sealing wheel 5 seal the compartments and the exhaust pipe 12 is in a flowing state, the exhaust gas in the compartments will pass through the bag assembly 4 and then flow upward from the opening of the bag assembly 4 to the exhaust pipe 12, thereby purifying the exhaust gas through the bag assembly 4 and then discharging it outward through the exhaust pipe 12, thereby avoiding the direct discharge of exhaust gas and causing air pollution, and ensuring environmental quality.

[0051] (2) When one compartment is being cleaned, the other compartment is being purified: A gas flow sensor is installed on the exhaust pipe 12 to monitor the airflow. When the airflow through the bag assembly 4 in a certain compartment is reduced due to excessive dust, and the airflow through the exhaust pipe 12 is reduced to a predetermined value, the corresponding compartment is cleaned. The gas flow sensor transmits the signal to the controller, and then the controller controls the motor to drive the rotating partition 14 to rotate toward the blocked compartment, so that the rotating partition 14... The lower edge is close to the upper edge of the circular groove where the sealing wheel 5 is located. At the same time, the controller controls the dual-axis motor 203 to drive the corresponding ball screw 204 to rotate, thereby causing the first moving plate 206 to slide away from the diversion shell 201, thereby causing the telescopic tube 208 to extend and the sealing cloth 16 to extend. Thus, the sealing cloth 16 and the rotating partition 14 seal the upper and lower parts of the chamber for subsequent dust removal. The aerator 202 delivers the compressed gas inside to the diversion shell 201 through the connecting pipe, and then through the diversion shell 201... The dust is conveyed into the telescopic pipe 208, and then sprayed downwards from the spray pipe 207 into the bag assembly 4 to clean the bag assembly 4. The falling dust falls downwards to the sealing wheel 5, causing the sealing wheel 5 to rotate, thereby conveying the dust downwards to the water spray ring 10. Since the water sprayed from the water spray ring 10 forms a water curtain to seal the passing dust, secondary dust generation can be avoided. Subsequently, the dust falls into the water receiving box 11 with the water, and then is discharged to a designated location through the water pipe. At the same time as the sealing wheel 5 rotates, the connection point between the second connecting rod 605 and the sealing wheel 5... Because of the eccentric design, the rotation of the closed wheel 5 will cause the second connecting rod 605 to move up and down, which in turn will cause the second spring 603 to contract and extend, which will cause the first connecting rod 601 to vibrate. In turn, under the extension and retraction of the limiting post 302, the second moving plate 304 will vibrate, which will cause the bag assembly 4 to vibrate. This will make it easier for the dust attached to the outer wall of the bag assembly 4 to fall off, thereby increasing the efficiency and effect of dust removal, and ensuring the filtration effect of the bag assembly 4 and the purification effect of the device. Meanwhile, the other compartment will continue to purify the exhaust gas normally.

[0052] (3) Special note: Due to the design of the rotating partition 14, it will not close the two compartments at the same time. Even if the airflow of the exhaust pipe 12 on both compartments is reduced, the two compartments will not be cleaned at the same time. Instead, the compartment whose airflow reaches the predetermined value first will be closed and cleaned, while the other compartment will continue to be purified. After the compartment that reaches the predetermined value first is cleaned, the exhaust gas will continue to be purified. Then the other compartment will be cleaned to ensure the continuity of the equipment's exhaust gas purification.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite waste gas purification and treatment device for ferromolybdenum smelting, comprising a housing (1), characterized in that: The box (1) has two symmetrical chambers inside. Each of the two chambers of the box (1) is equipped with a bag assembly (4). A symmetrical pulse assembly (2) is provided above the bag assembly (4). Two symmetrical sealing cloths (16) are connected to the bottom of the pulse assembly (2) through a telescopic tube (208). A rotating partition (14) is rotatably connected between the bottoms of the two chambers. A closed wheel (5) that can rotate under the pulse airflow is provided at the bottom of each chamber. By controlling the rotation of the rotating partition (14), the bottom of one chamber is closed, and the sealing cloth (16) is extended by the telescopic tube (208) to close the top of this chamber, thereby guiding the exhaust gas into the other chamber. The pulse assembly (2) cleans the bag assembly (4) in the closed chamber through the nozzle (207) fixedly connected to the bottom of the telescopic tube (208), and the other chamber normally purifies the exhaust gas.

2. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 1, characterized in that: The inner wall of the box (1) is fixedly connected to a fixed partition (13), which divides the interior of the box (1) into two compartments. The lower surface of the fixed partition (13) is in contact with the upper surface of the rotating partition (14), and several through holes (15) are opened through the side surface of the fixed partition (13).

3. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 2, characterized in that: The inner sidewall of the box (1) is provided with a sealing block (17), so that the sidewall of the rotating partition (14) is in constant contact with the sidewall of the sealing block (17) during the rotation of the rotating partition (14).

4. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 1, characterized in that: The pulse assembly (2) includes a flow divider housing (201). An aerator (202) is connected to the top of the flow divider housing (201) via a connecting pipe. The aerator (202) is fixedly mounted on the upper surface of the housing (1). A dual-axis motor (203) is mounted on the upper surface of the flow divider housing (201). Both ends of the dual-axis motor (203) are connected to ball screws (204). A guide rail (205) is fixedly connected to the inner wall of the housing (1). The two sides of the flow divider housing (201) are connected to the guide rails (205). The first moving plate (206) is slidably connected to the two first moving plates (206) via ball screws (204) and guide rails (205). The two sides of the flow divider shell (201) are provided with telescopic tubes (208) between them. A sealing cloth (16) is fixedly connected to the bottom of the telescopic tube (208), and the two sides of the sealing cloth (16) are fixedly connected to the side surfaces of the nozzle (207) and the flow divider shell (201). The nozzle (207) passes through the sealing cloth (16).

5. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 1, characterized in that: The inner wall of the box (1) is provided with two bag support assemblies (3). The bag support assembly (3) includes a support plate (301). The inner wall of the support plate (301) is fixedly connected with a number of limiting posts (302). The support plate (301) is slidably connected to a second moving plate (304) through the number of limiting posts (302). The second moving plate (304) is provided with a bag assembly (4). The outer surface of the limiting post (302) is sleeved with a first spring (303).

6. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 5, characterized in that: An auxiliary vibration assembly (6) is fixedly connected to the lower part of the second movable plate (304). The lower part of the auxiliary vibration assembly (6) is movably connected to the closed wheel (5), and the closed wheel (5) is rotatably connected to the inner wall of the box (1) through a one-way bearing.

7. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 6, characterized in that: The auxiliary vibration assembly (6) includes two first connecting rods (601), the lower ends of the two first connecting rods (601) are fixedly connected to a first connecting plate (602), a plurality of second springs (603) are fixedly connected to the lower surface of the first connecting plate (602), the first connecting plate (602) is fixedly connected to a second connecting plate (604) through a plurality of second springs (603), the lower surface of the second connecting plate (604) is movably connected to a second connecting rod (605), and the lower end of the second connecting rod (605) is eccentrically and rotatably connected to the closed wheel (5).

8. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 1, characterized in that: The side surface of the box (1) is fixedly connected to a conveying pipe (8), and the box (1) is fixedly connected to an electrostatic precipitator (9) and a rotary smoke hood (7) through the conveying pipe (8).

9. The composite waste gas purification and treatment equipment for ferromolybdenum smelting according to claim 1, characterized in that: A water spray ring (10) is fixedly connected to the lower surface of the box (1), a water receiving box (11) is provided below the box (1), and two air outlet pipes (12) are fixedly connected to the upper surface of the box (1).

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