Dangerous waste cloth bag dust removal equipment and dust removal method

Abstract

The invention relates to the technical field of environment-friendly dust removal equipment, in particular to hazardous waste cloth bag dust removal equipment which comprises a box body, a plurality of filter bags arranged in the box body and a blowback system arranged at the top ends of the filter bags, and the blowback system comprises blowback pipes arranged at the top ends of the filter bags; an air distribution device for shunting air flow is arranged between the back flushing pipe and the filter bag, and the air distribution device is inserted into the filter bag and is used for conveying the distributed air flow to different positions of the filter bag; the gas distribution device comprises a gas distribution cover for distributing gas flow, a plurality of gas distribution pipes for conveying the gas flow and a gas spraying ring for spraying the gas flow, the gas distribution pipes with different lengths are inserted into the filter bag for different depths, and two ends of the gas distribution pipes are fixedly connected with the gas spraying ring and the gas distribution cover respectively. The air distribution device has the beneficial effects that the air flow can directly reach the bottom end of the filter bag through the air distribution device, and the bottom end of the filter bag is effectively and thoroughly cleaned by utilizing the air flow directly reaching the bottom end of the filter bag, so that the effect of thoroughly cleaning the filter bag is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of environmental dust removal equipment, specifically to a bag filter dust removal device and method for hazardous waste. Background Technology

[0002] With the rapid development of industry and increasingly stringent environmental protection requirements, the demand for waste gas treatment equipment from various industrial enterprises is also constantly growing. As an important type of equipment, baghouse dust collectors are widely used in dust collection and purification in industries such as cement, chemical, and hazardous waste treatment. They use woven fiber filter bags to capture particulate matter in dusty gases to achieve the purpose of purifying the air.

[0003] Baghouse dust collectors are dry dust filtration devices. After a period of use, a layer of dust accumulates on the surface of the filter bags due to effects such as sieving, collision, retention, diffusion, and electrostatic discharge. This dust layer is called the primary layer. In subsequent operation, the primary layer becomes the main filtration layer of the filter media. Relying on the effect of the primary layer, even filter media with larger mesh sizes can achieve high filtration efficiency. Existing baghouse dust collectors are usually equipped with a back-flushing system to periodically remove the dust layer adhering to the surface of the filter bags, maintaining a certain filtration efficiency.

[0004] In a baghouse dust collector, the exhaust gas rises from the bottom of the filter bag. Due to gravity, the dust layer is thickest at the bottom of the filter bag. However, the reverse-blowing system is installed at the top of the filter bag. After the airflow blown out by the reverse-blowing system cleans the top of the filter bag, it gradually overflows along the filter bag. By the time the airflow reaches the bottom of the filter bag, it can no longer effectively and thoroughly clean the bottom of the filter bag, resulting in incomplete cleaning of the filter bag in the baghouse dust collector. Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Invention

[0005] This application proposes a dust collection device and method for hazardous waste bag filters. By setting up an air distribution device, the airflow can reach the bottom of the filter bag directly. The airflow reaching the bottom of the filter bag can effectively and thoroughly clean the bottom of the filter bag, thereby achieving the effect of thoroughly cleaning the filter bag.

[0006] To this end, the first aspect of this application provides a hazardous waste bag filter dust collector, including a housing, a plurality of filter bags disposed inside the housing, and a back-blowing system disposed at the top of the filter bags. The back-blowing system includes a back-blowing pipe disposed at the top of each filter bag, and an air distribution device for diverting airflow is disposed between the back-blowing pipe and the filter bag. The air distribution device is inserted into the filter bag to deliver the distributed airflow to different positions of the filter bag. The air distribution device includes an air distribution hood for distributing airflow, several air distribution pipes for conveying airflow, and an air jet ring for ejecting airflow. The air distribution hood includes a vertically and inverted conical hood and an air distribution plate that seals the conical hood. The top of the conical hood is fixedly connected to the backflush pipe, and the air distribution plate is fixedly connected to the bottom of the conical hood. The several air distribution pipes have different lengths, one end of each air distribution pipe is fixedly connected to the air distribution plate, and the other end is inserted into the filter bag to different depths. The air jet ring is fixedly connected to the end of the air distribution pipe away from the air distribution hood.

[0007] By adopting the above technical solution: when backflushing and cleaning filter bags is required using dust removal equipment, a high-velocity airflow is first blown into the backflushing pipe through the backflushing system. The high-velocity airflow enters the air distribution hood, and then flows evenly into several air distribution pipes. The airflow then flows along the air distribution pipes to the jet rings at different parts of the filter bag. The jet rings spray the high-pressure airflow from the air distribution pipes onto the inner wall of the filter bag, so that the airflow cleans different parts of the filter bag at the same time. This solves the problem that after the middle and upper parts of the filter bag are cleaned, the airflow gradually overflows from the middle and upper parts of the filter bag, making it impossible to clean the dust attached to the bottom of the filter bag. By using the airflow that reaches the bottom of the filter bag, the bottom of the filter bag is effectively and thoroughly cleaned, thereby achieving the effect of thoroughly cleaning the filter bag.

[0008] Preferably, each of the jet rings is provided with a pressure ejection device, which includes a jet pipe fixedly connected to the jet ring and a pressure nozzle for controlling the ejection pressure. The end of the jet pipe away from the jet ring is fixedly connected to the pressure nozzle.

[0009] By adopting the above technical solution: after the air distribution pipe delivers high-pressure airflow to the air jet ring, in order to improve the cleaning effect of the airflow jet impact, it is necessary to set pressure nozzles so that the pressure can reach a certain value before the filter bag can be jetted and impacted. At the same time, the pressure nozzles ensure that the pressure in each position in the air jet ring and in each air jet pipe is equal, thereby ensuring that the air jet ring can clean the filter bag in all directions.

[0010] Preferably, the filter bag is provided with a support frame for supporting the filter bag. The support frame includes a support ring that abuts against the inner wall of the filter bag, a central rod that is coaxially arranged with the filter bag, and a number of support rods arranged between the central rod and the support ring. The two ends of the support rods are fixedly connected to the support ring and the central rod, respectively. A cavity is opened on the central rod to allow a number of air distribution pipes to pass through.

[0011] By adopting the above technical solution: the filter bag is supported by a support ring, and the support ring and the central rod are connected by a support rod, so that the central rod connects several support rings together, and a cavity is opened on the central rod to allow the air distribution pipe to pass through. The air distribution pipe passes through the cavity and enters the filter bag. The cavity on the central rod constrains several air distribution pipes, preventing the air distribution pipes from colliding with the filter bag under the blowing of the airflow and damaging the filter bag when the filter bag is working normally.

[0012] Preferably, the jet ring is sleeved on the outside of the central rod, and a symmetrical diverter is provided between the jet ring and the air distribution pipe for symmetrically inputting airflow into the jet ring. The middle part of the symmetrical diverter is fixedly connected to and communicates with the air distribution pipe, and the two ends of the symmetrical diverter pass through the side wall of the central rod and are fixedly connected to two symmetrical positions of the jet ring respectively. Both ends of the symmetrical diverter are connected to the jet ring.

[0013] By adopting the above technical solution: after the airflow in the air distribution pipe is delivered to the symmetrical distribution pipe by setting a symmetrical distribution pipe, it is then evenly delivered to two symmetrical positions of the air distribution ring, so that the airflow can quickly and evenly fill the jet ring; at the same time, since the jet ring is sleeved on the outside of the central rod, the symmetrical distribution pipe no longer needs to pass through the central rod. Meanwhile, the symmetrical distribution pipe passes through the side wall of the central rod and is fixedly connected to the jet ring, thereby supporting and fixing the position of the jet ring to the central rod.

[0014] Preferably, the support frame is provided with a striking device for vibrating the filter bag. The striking device includes several striking rods for striking the filter bag and an eccentric wheel for periodically pushing the striking rods to strike the filter bag. The several striking rods are evenly distributed around the central rod. One end of each striking rod abuts against the filter bag, and the other end passes through the side wall of the central rod and is located in the cavity. The striking rods are slidably connected to the central rod. The eccentric wheel is located in the cavity and is provided with a driving device for driving the eccentric wheel to rotate eccentrically. The eccentric wheel abuts against each striking rod.

[0015] By adopting the above technical solution: the driving device drives the eccentric wheel to rotate eccentrically. Since the striking rod is slidably connected to the central rod and the eccentric wheel abuts against the central rod, the end of the eccentric wheel far from the axis of rotation pushes a striking rod to slide outward. The striking rod strikes the side wall of the filter bag, causing the filter bag to vibrate and dislodging dust from the filter bag. As the eccentric wheel rotates, the end of the eccentric wheel far from the axis of rotation moves away from the striking rod. Under the elasticity of the filter bag, the striking rod will move closer to the axis of the central rod, causing the striking rod to abut against the eccentric wheel. The next time the end of the eccentric wheel far from the axis of rotation pushes the striking rod again, the striking rod will slide back and forth multiple times, that is, the striking rod strikes the filter bag multiple times. At the same time, the setting of the eccentric wheel ensures that the striking rod does not strike the filter bag simultaneously, but strikes it gradually along the circumferential side wall of the filter bag, thus avoiding physical damage to the filter bag from simultaneous striking and ensuring uniform striking of the side wall of the filter bag.

[0016] Preferably, the striking rod is provided with a reset device for pushing the striking rod to always abut against the eccentric wheel. The reset device includes a mounting shell sleeved on the outside of the eccentric wheel, a positioning ring fixedly connected to the striking rod, and an elastic element that drives the striking rod to reset. The mounting shell is fixed in the cavity of the central rod. The striking rod passes through the side wall of the mounting shell and abuts against the eccentric wheel. The elastic element and the positioning ring are both located inside the mounting shell. The elastic element is sleeved on the outside of the striking rod. One end of the elastic element abuts against the inner wall of the mounting shell, and the other end abuts against the positioning ring.

[0017] By adopting the above technical solution: setting up a reset device, as the eccentric wheel pushes the striking rod to slide and strike the filter bag, since the striking rod is fixedly connected to the positioning ring, the striking rod drives the positioning ring to slide away from the axis of the central rod. At this time, the positioning ring drives the elastic element to compress. As the eccentric wheel rotates, the eccentric wheel gradually loses its pushing force on the striking rod. The elastic element pushes the positioning ring to drive the striking rod to slide closer to the axis of the central rod, thereby preventing the filter bag from causing the striking rod to slide. While reducing the force of the filter bag on the striking rod, it can also accelerate the recovery speed of the filter bag, thereby accelerating the vibration effect of the filter bag and improving the knocking and cleaning effect of dust.

[0018] Preferably, the drive device includes a housing fixed in a cavity, a turbine rotating inside the housing cavity, a drive shaft fixedly connected to the turbine, and an inlet pipe and an outlet pipe for airflow entering and exiting the housing. Both the inlet pipe and the outlet pipe are fixedly connected to the housing. The two ends of the inlet pipe are fixedly connected to the housing and the air distribution pipe, respectively. The two ends of the outlet pipe are fixedly connected to the housing and the air distribution pipe, respectively. The end of the drive shaft away from the turbine passes through the housing and is fixedly connected to an eccentric wheel.

[0019] By adopting the above technical solution: the airflow in the air distribution pipe is delivered to the housing through the air inlet pipe, and then the airflow drives the turbine to rotate. After the turbine rotates, the airflow driven by it flows out of the housing from the air outlet pipe and then enters the air distribution pipe. The rotation of the turbine drives the drive shaft to rotate, and the drive shaft drives the eccentric wheel to rotate, thereby realizing the drive of the eccentric wheel. The airflow in the air distribution pipe is used for driving, eliminating the need for an additional power source. At the same time, it avoids setting up motors and electrical components in the housing, relying only on compressed air for driving, thus avoiding the risk of electric vibration generating sparks in flammable and explosive environments.

[0020] Preferably, a limiting component for limiting the sliding direction of the striking rod is provided between the mounting shell and the striking rod. The limiting component includes a limiting strip fixedly connected to the mounting shell and a slider fixedly connected to the striking rod. Two limiting strips are provided on both sides of the striking rod. Each limiting strip has a limiting groove on the side of the striking rod closest to the striking rod. A slider is fixedly connected to the side of the striking rod closest to the two limiting strips. The slider is located in the limiting groove and is slidably connected to the limiting groove.

[0021] By adopting the above technical solution: when the striking rod slides, it drives the slider to slide in the limiting groove. The limiting strip and the limiting groove constrain the sliding direction of the striking rod, thereby making the striking rod more stable when sliding and preventing the end of the striking rod from tilting under the action of gravity, which would prevent the striking rod from operating normally.

[0022] Preferably, a flexible sleeve is fixedly connected to one end of the striking rod near the filter bag. The flexible sleeve is used to reduce the rigid damage to the filter bag caused by the striking rod.

[0023] By adopting the above technical solution, the flexible sleeve abuts against the filter bag, avoiding rigid damage to the filter bag caused by hard impact, thus further improving the service life of the filter bag.

[0024] A second aspect of this application provides a method for baghouse dust collection of hazardous waste using the aforementioned dust collection equipment, comprising the following steps: S1. Start the back-flushing system: First, stop the bag filter, then turn on the back-flushing system and blow a high-speed airflow into the back-flushing pipe; S2. Air distribution device: The high-speed airflow in the backflush pipe is delivered to the air distribution hood, and then flows from the air distribution hood into multiple air distribution pipes. The air distribution pipes deliver the airflow to different parts of the filter bag. The jet ring connected to the air distribution pipe delivers the gas to multiple jet pipes. Finally, the gas impacts and removes dust from different parts of the filter bag simultaneously through the pressure nozzle. S3. Airflow drives the start of the drive unit: As the airflow is delivered to the jet ring along the air distribution pipe, the airflow flows into the housing through the air intake pipe. The airflow blows the turbine to rotate, and the turbine rotation drives the drive shaft to rotate, thereby converting the kinetic energy of the airflow into the kinetic energy of the drive shaft rotation. S4. The drive shaft drives the knocking device to start: The drive shaft drives the eccentric wheel to rotate. When the eccentric wheel rotates eccentrically, it drives the knocking rod to slide along the radial direction of the central rod axis. The knocking rod drives the flexible sleeve to abut against the filter bag, completing the knocking vibration of the filter bag and completing the knocking dust removal of the filter bag. S5. The reset device drives the striking rod to separate from the filter bag: As the eccentric wheel rotates, the striking rod pushes the eccentric wheel to slide, and the striking rod drives the positioning ring to compress the elastic element. When the eccentric wheel rotates and pushes the adjacent striking rod, the elastic element pushes the positioning ring to drive the striking rod to slide into the mounting shell, thereby separating the striking rod from the filter bag and ensuring that the filter bag quickly returns to its initial state under its own elasticity.

[0025] The working principle and beneficial effects of this application are as follows: 1. This application installs an air distribution device at the backflush pipe. The backflush system blows high-velocity airflow into the backflush pipe, which then enters the air distribution hood and flows evenly into several air distribution pipes. The airflow then flows along the air distribution pipes to the jet rings at different parts of the filter bag. The jet rings spray the high-pressure airflow from the air distribution pipes onto the inner wall of the filter bag, allowing the airflow to clean different parts of the filter bag simultaneously. This solves the problem that after the upper and middle parts of the filter bag are cleaned, the airflow gradually overflows from the upper and middle parts of the filter bag, making it impossible to clean the dust attached to the bottom of the filter bag. By using airflow that reaches the bottom of the filter bag, the bottom of the filter bag is effectively and thoroughly cleaned, thereby achieving the effect of thoroughly cleaning the filter bag.

[0026] 2. This application incorporates a striking device. The driving device drives an eccentric wheel to rotate eccentrically. Since the striking rod is slidably connected to the central rod and the eccentric wheel abuts against the central rod, the end of the eccentric wheel furthest from the axis of rotation pushes a striking rod outward. The striking rod strikes the side wall of the filter bag, causing the filter bag to vibrate and dislodging dust. As the eccentric wheel rotates, the end of the eccentric wheel furthest from the axis of rotation moves away from the striking rod. Under the elastic force of the filter bag, the striking rod moves closer to the axis of the central rod, abutting against the eccentric wheel. The next time the end of the eccentric wheel furthest from the axis of rotation pushes the striking rod again, the striking rod slides back and forth, resulting in multiple strikes to the filter bag. Simultaneously, the eccentric wheel design ensures that the striking rod does not strike the filter bag simultaneously, but rather strikes it gradually along the circumferential side wall of the filter bag. This avoids physical damage to the filter bag from simultaneous strikes while ensuring uniform striking of the side wall.

[0027] 3. This application uses an airflow-driven drive device. The airflow in the air distribution pipe is delivered to the housing through the air inlet pipe. The airflow then drives the turbine to rotate. After the turbine rotates, the airflow driven by it flows out of the housing through the air outlet pipe and then enters the air distribution pipe again. The rotation of the turbine drives the drive shaft to rotate, and the drive shaft drives the eccentric wheel to rotate, thereby driving the eccentric wheel. By using the airflow in the air distribution pipe for drive, no additional power source is needed. At the same time, it avoids setting up motors and electrical components in the housing. It relies solely on compressed air for drive, avoiding the risk of electric vibration generating sparks in flammable and explosive environments. Attached Figure Description

[0028] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of a hazardous waste bag filter dust collector according to this application; Figure 2 This is a schematic diagram of the internal structure of the dust removal equipment in this application; Figure 3 This is a schematic diagram of the filter bag and air distribution device of this application; Figure 4 This is a schematic diagram of the internal support device for the filter bag in this application; Figure 5 This is a schematic diagram of the pressure ejection device inside the filter bag in this application; Figure 6 This is a schematic diagram of the internal striking device of the filter bag in this application; Figure 7 for Figure 6 A magnified view of part A in the middle.

[0030] The technical features in the attached drawings are labeled as follows: 1. Housing; 11. Exhaust pipe; 12. Purification pipe; 13. Partition; 2. Filter bag; 3. Backflush system; 31. Backflush pipe; 4. Air distribution device; 41. Air distribution hood; 42. Air distribution pipe; 43. Jet ring; 5. Pressure ejection device; 51. Jet pipe; 52. Pressure nozzle; 6. Support frame; 61. Support ring; 62. Center rod; 63. Support rod; 7. Symmetrical diversion pipe; 8. Striking device; 81. Striking rod; 82. Eccentric wheel; 9. Reset device; 91. Positioning ring; 92. Elastic element; 93. Mounting shell; 10. Drive device; 101. Housing; 102. Turbine; 103. Drive shaft; 104. Inlet pipe; 105. Outlet pipe; 20. Limiting assembly; 201. Limiting strip; 202. Slider; 30. Flexible sleeve. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1-2 As shown, the first aspect of this embodiment provides a hazardous waste bag filter dust collector, including a housing 1, a plurality of filter bags 2 disposed in the housing 1, and a back-blowing system 3 disposed at the top of the filter bags 2. The back-blowing system 3 includes a back-blowing pipe 31 disposed at the top of each filter bag 2. An air distribution device 4 for diverting airflow is disposed between the back-blowing pipe 31 and the filter bag 2. The air distribution device 4 is inserted into the filter bag 2 to deliver the distributed airflow to different positions of the filter bag 2. A knocking device 8 blown by the airflow is also disposed in the filter bag 2. The knocking device 8 is used to knock and vibrate the filter bag 2 to remove dust.

[0033] like Figures 3-4 As shown, the air distribution device 4 includes an air distribution hood 41 for distributing airflow, several air distribution pipes 42 for conveying airflow, and an air jet ring 43 for ejecting airflow. The air distribution hood 41 includes a vertically and inverted conical hood and an air distribution plate that seals the conical hood. The top of the conical hood is fixedly connected to the backflush pipe 31, and the air distribution plate is fixedly connected to the bottom of the conical hood. The several air distribution pipes 42 have different lengths. One end of each air distribution pipe 42 is fixedly connected to the air distribution plate, and the other end is inserted into the filter bag 2 at different depths. The air jet ring 43 is fixedly connected to the end of the air distribution pipe 42 away from the air distribution hood 41.

[0034] like Figures 4-5 As shown, a support frame 6 for supporting the filter bag 2 is provided inside the filter bag 2. The support frame 6 includes a support ring 61 that abuts against the inner wall of the filter bag 2, a central rod 62 that is coaxially arranged with the filter bag 2, and several support rods 63 arranged between the central rod 62 and the support ring 61. The two ends of the support rods 63 are fixedly connected to the support ring 61 and the central rod 62 respectively. A cavity is opened on the central rod 62 to allow several air distribution pipes 42 to pass through.

[0035] like Figures 4-5As shown, the jet ring 43 is sleeved on the outside of the central rod 62. A symmetrical diversion pipe 7 is provided between the jet ring 43 and the air distribution pipe 42 for symmetrically inputting airflow into the jet ring 43. The middle part of the symmetrical diversion pipe 7 is fixedly connected to and communicates with the air distribution pipe 42. The two ends of the symmetrical diversion pipe 7 pass through the side wall of the central rod 62 and are fixedly connected to two symmetrical positions of the jet ring 43 respectively. Both ends of the symmetrical diversion pipe 7 are connected to the jet ring 43. Each of the jet rings 43 is provided with a pressure ejection device 5. The pressure ejection device 5 includes a jet pipe 51 fixedly connected to the jet ring 43 and a pressure nozzle 52 for controlling the ejection pressure. The end of the jet pipe 51 away from the jet ring 43 is fixedly connected to the pressure nozzle 52.

[0036] like Figures 5-6 As shown, a striking device 8 for vibrating the filter bag 2 is provided on the support frame 6. The striking device 8 includes several striking rods 81 for striking the filter bag 2 and an eccentric wheel 82 for periodically pushing the striking rods 81 to strike the filter bag 2. The several striking rods 81 are evenly distributed around the central rod 62. One end of each striking rod 81 abuts against the filter bag 2, and the other end passes through the side wall of the central rod 62 and is located in the cavity. The striking rods 81 are slidably connected to the central rod 62. The eccentric wheel 82 is set in the cavity and is provided with a driving device 10 for driving the eccentric wheel 82 to rotate eccentrically. The eccentric wheel 82 abuts against each striking rod 81. A flexible sleeve 30 is fixedly connected to the end of the striking rod 81 near the filter bag 2. The flexible sleeve 30 is used to reduce the rigid damage to the filter bag 2 caused by the striking rod 81.

[0037] like Figures 6-7 As shown, the striking rod 81 is provided with a reset device 9 for pushing the striking rod 81 to always abut against the eccentric wheel 82. The reset device 9 includes a mounting shell 93 sleeved on the outside of the eccentric wheel 82, a positioning ring 91 fixedly connected to the striking rod 81, and an elastic element 92 that drives the striking rod 81 to reset. The mounting shell 93 is fixed in the cavity of the central rod 62. The striking rod 81 passes through the side wall of the mounting shell 93 and abuts against the eccentric wheel 82. The elastic element 92 and the positioning ring 91 are both located inside the mounting shell 93. The elastic element 92 is sleeved on the outside of the striking rod 81. One end of the elastic element 92 abuts against the inner wall of the mounting shell 93, and the other end abuts against the positioning ring 91.

[0038] like Figures 6-7As shown, the drive device 10 includes a housing 101 fixed in a cavity, a turbine 102 rotating inside the cavity of the housing 101, a drive shaft 103 fixedly connected to the turbine 102, and an air inlet pipe 104 and an air outlet pipe 105 for airflow entering and exiting the housing 101. Both the air inlet pipe 104 and the air outlet pipe 105 are fixedly connected to the housing 101. The two ends of the air inlet pipe 104 are fixedly connected to the housing 101 and the air distribution pipe 42, respectively. The two ends of the air outlet pipe 105 are fixedly connected to the housing 101 and the air distribution pipe 42, respectively. The end of the drive shaft 103 away from the turbine 102 passes through the housing 101 and is fixedly connected to the eccentric wheel 82.

[0039] like Figures 6-7 As shown, a limiting component 20 for limiting the sliding direction of the striking rod 81 is provided between the mounting shell 93 and the striking rod 81. The limiting component 20 includes a limiting strip 201 fixedly connected to the mounting shell 93 and a slider 202 fixedly connected to the striking rod 81. Two limiting strips 201 are provided on both sides of the striking rod 81. Each limiting strip 201 has a limiting groove on the side of the striking rod 81 near the two limiting strips 201. A slider 202 is fixedly connected to the side of the striking rod 81 near the two limiting strips 201. The slider 202 is located in the limiting groove and is slidably connected to the limiting groove.

[0040] The basic principle of this embodiment is as follows: When using the dust removal equipment, high-pressure gas is first introduced into the back-blowing system 3. The gas enters the air distribution hood 41 through the back-blowing pipe 31, and then enters the air distribution pipe 42 through the air distribution hood 41 and is then transported to different positions of the filter bag 2. At this time, the airflow in the air distribution pipe 42 enters the housing 101 through the inlet pipe 104. The airflow drives the turbine 102 to rotate, and the rotation of the turbine 102 drives the drive shaft 103 to rotate. The airflow that rotates with the turbine 102 enters the air supply pipe again through the outlet pipe 105, enters the symmetrical distribution pipe 7 along the air supply pipe, and then enters the jet ring 43. Finally, it flows evenly into each jet pipe 51 along the jet ring 43 and is finally ejected from the pressure nozzle 52 of the jet pipe 51. The ejected high-pressure gas impacts the inner wall of the filter bag 2, thereby removing dust from the filter bag 2. At this time, with the flow of gas, the drive shaft 103 rotates. 03 drives the eccentric wheel 82 to rotate, which in turn drives the striking rods 81 to slide one by one, thus physically striking the filter bag 2. During the sliding process, the striking rods 81 drive the positioning ring 91 to compress the elastic element 92. As the end of the eccentric wheel 82 away from the axis of rotation moves away from the striking rod 81, the elastic element 92 releases its elastic potential energy, pushing the positioning ring 91 to drive the striking rods 81 to slide into the mounting shell 93, thereby realizing the one-by-one striking of the striking rods 81, and uniformly striking the filter bag 2 in a cyclical manner. This achieves simultaneous airflow impact and physical striking of the filter bag 2, without introducing a new power source, and avoiding the generation of easily explosive sparks by the motor and electrical components in a flammable and explosive dust environment. Through the dual dust removal effect, the bottom of the filter bag 2 is effectively and thoroughly cleaned, thus achieving the effect of thoroughly cleaning the filter bag 2.

[0041] A second aspect of this embodiment provides a method for baghouse dust collection of hazardous waste using the aforementioned dust collection equipment, comprising the following steps: S1. Start the back-flushing system 3: First, stop the bag filter, and then turn on the back-flushing system 3 to blow high-speed airflow into the back-flushing pipe 31; S2, Air distribution device 4 distributes airflow: The high-speed airflow in the back-blowing pipe 31 is delivered to the air distribution hood 41, and then flows from the air distribution hood 41 into multiple air distribution pipes 42. The air distribution pipes 42 deliver the airflow to different parts of the filter bag 2. The jet ring 43 connected to the air distribution pipe 42 delivers the gas to multiple jet pipes 51. Finally, the gas impacts and removes dust from different parts of the filter bag 2 simultaneously through the pressure nozzle 52. S3. The airflow drives the drive device 10 to start: During the process of the airflow being delivered to the jet ring 43 along the air distribution pipe 42, the airflow flows into the housing 101 through the air intake pipe 104. The airflow blows the turbine 102 to rotate, and the rotation of the turbine 102 drives the drive shaft 103 to rotate, thereby converting the kinetic energy of the airflow into the kinetic energy of the rotation of the drive shaft 103. S4. Drive shaft 103 drives the knocking device 8 to start: Drive shaft 103 drives eccentric wheel 82 to rotate. When eccentric wheel 82 rotates eccentrically, it drives knocking rod 81 to slide along the radial direction of the axis of central rod 62. Knocking rod 81 drives flexible sleeve 30 to abut against filter bag 2, completing the knocking vibration of filter bag 2, and completing the knocking dust removal of filter bag 2. S5. Reset device 9 drives the striking rod 81 to separate from the filter bag 2: As the eccentric wheel 82 rotates, when the eccentric wheel 82 pushes the striking rod 81 to slide, the striking rod 81 drives the positioning ring 91 to compress the elastic element 92. When the eccentric wheel 82 rotates and pushes the adjacent striking rod 81, the elastic element 92 pushes the positioning ring 91 to drive the striking rod 81 to slide into the mounting shell 93, thereby separating the striking rod 81 from the filter bag 2 and ensuring that the filter bag 2 quickly returns to its initial state under its own elasticity.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hazardous waste cloth bag dust removal device, comprising a box body (1), a plurality of filter bags (2) arranged in the box body (1), and a back blowing system (3) arranged at the top end of the filter bags (2), wherein the back blowing system (3) comprises a back blowing pipe (31) arranged at the top end of each filter bag (2), characterized in that, The air distribution device (4) is inserted into the filter bag (2) for delivering the distributed air flow to different positions of the filter bag (2); the air distribution device (4) comprises an air distribution cover (41) for distributing the air flow, a plurality of air distribution pipes (42) for delivering the air flow, and a jet ring (43) for jetting the air flow; the air distribution cover (41) comprises a vertically and inversely arranged conical cover and an air distribution plate sealing the conical cover; the top end of the conical cover is fixedly connected with the backflush pipe (31); the air distribution plate is fixedly connected with the bottom end of the conical cover; the plurality of air distribution pipes (42) are different in length; one end of each air distribution pipe (42) is fixedly connected with the air distribution plate; the other end is inserted into the filter bag (2) to different depths; and the jet ring (43) is fixedly connected with the end of the air distribution pipe (42) away from the air distribution cover (41). A pressure jetting device (5) is arranged on each jet ring (43); the pressure jetting device (5) comprises a jet pipe (51) fixedly connected with the jet ring (43) and a pressure nozzle (52) for controlling the jetting pressure; and the end of the jet pipe (51) away from the jet ring (43) is fixedly connected with the pressure nozzle (52).

2. The hazardous waste cloth bag dedusting device according to claim 1, characterized in that, The filter bag (2) is provided with a support frame (6) for supporting the filter bag (2); the support frame (6) comprises a support ring (61) abutting against the inner wall of the filter bag (2), a central rod (62) coaxially arranged with the filter bag (2), and a plurality of support rods (63) arranged between the central rod (62) and the support ring (61); the two ends of each support rod (63) are fixedly connected with the support ring (61) and the central rod (62), respectively; and the central rod (62) is provided with cavities allowing the plurality of air distribution pipes (42) to pass through.

3. The hazardous waste cloth bag dedusting device according to claim 1, characterized in that, The jet ring (43) is sleeved on the outside of the central rod (62); a symmetrical shunt pipe (7) is arranged between the jet ring (43) and the air distribution pipe (42) for symmetrically inputting the air flow into the jet ring (43); the middle part of the symmetrical shunt pipe (7) is fixedly connected with and communicates with the air distribution pipe (42); the two ends of the symmetrical shunt pipe (7) pass through the side wall of the central rod (62) and are fixedly connected with the two symmetrical positions of the jet ring (43), respectively; and the two ends of the symmetrical shunt pipe (7) communicate with the jet ring (43).

4. The hazardous waste cloth bag dedusting device according to claim 3, characterized in that, The support frame (6) is provided with a knocking device (8) for vibrating the filter bag (2); the knocking device (8) comprises a plurality of knocking rods (81) for knocking the filter bag (2) and an eccentric wheel (82) for periodically pushing the knocking rods (81) to knock the filter bag (2); the plurality of knocking rods (81) are evenly distributed around the central rod (62); one end of each knocking rod (81) abuts against the filter bag (2); the other end passes through the side wall of the central rod (62) and is located in the cavity; the knocking rod (81) is slidingly connected with the central rod (62); the eccentric wheel (82) is arranged in the cavity; the eccentric wheel (82) is provided with a driving device (10) for driving the eccentric wheel (82) to eccentrically rotate; and the eccentric wheel (82) abuts against each knocking rod (81).

5. The hazardous waste cloth bag dedusting device according to claim 3, characterized in that, ​ 6. The hazardous waste cloth bag dedusting device according to claim 5, characterized in that, The knocking rod (81) is provided with a reset device (9) for pushing the knocking rod (81) to always abut against the eccentric wheel (82), the reset device (9) comprises a mounting shell (93) sleeved outside the eccentric wheel (82), a positioning ring (91) fixedly connected to the knocking rod (81), and an elastic element (92) for resetting the knocking rod (81), the mounting shell (93) is fixed in the cavity of the central rod (62), the knocking rod (81) abuts against the eccentric wheel (82) through the side wall of the mounting shell (93), the elastic element (92) and the positioning ring (91) are located in the mounting shell (93), the elastic element (92) is sleeved outside the knocking rod (81), one end of the elastic element (92) abuts against the inner wall of the mounting shell (93), and the other end abuts against the positioning ring (91).

7. The hazardous waste cloth bag dedusting device according to claim 6, characterized in that, The mounting shell (93) and the knocking rod (81) are provided with a limiting assembly (20) for limiting the sliding direction of the knocking rod (81), the limiting assembly (20) comprises a limiting strip (201) fixedly connected to the mounting shell (93) and a sliding block (202) fixedly connected to the knocking rod (81), the limiting strip (201) is provided with two limiting strips (201) distributed on both sides of the knocking rod (81), each limiting strip (201) is provided with a limiting groove on the side close to the knocking rod (81), and the side of the knocking rod (81) close to the two limiting strips (201) is fixedly connected with a sliding block (202), the sliding block (202) is located in the limiting groove, and the sliding block (202) is in sliding connection with the limiting groove.

8. The hazardous waste cloth bag dedusting device according to claim 5, characterized in that, The driving device (10) comprises a shell (101) fixed in the cavity, a turbine (102) rotating in the cavity of the shell (101), a driving shaft (103) fixedly connected to the turbine (102), and an air inlet pipe (104) and an air outlet pipe (105) for air flow in and out of the shell (101), wherein the air inlet pipe (104) and the air outlet pipe (105) are fixedly connected to the shell (101), the two ends of the air inlet pipe (104) are fixedly connected to the shell (101) and the air distribution pipe (42) respectively, the two ends of the air outlet pipe (105) are fixedly connected to the shell (101) and the air distribution pipe (42) respectively, and the end of the driving shaft (103) away from the turbine (102) is fixedly connected to the eccentric wheel (82) through the shell (101).

9. The hazardous waste cloth bag dedusting device according to claim 5, characterized in that, The end of the knocking rod (81) close to the filter bag (2) is fixedly connected with a flexible sleeve (30), and the flexible sleeve (30) is used for reducing the rigid damage of the knocking rod (81) to the filter bag (2).

10. A hazardous waste cloth bag dedusting method, characterized in that, The dust removal equipment of any one of claims 1-9 comprises the following steps: S1, starting the blowback system (3): first stopping the bag filter, and then opening the blowback system (3) to blow high-speed airflow into the blowback pipe (31); S2, the air distribution device (4) distributes airflow: the high-speed airflow in the back blowing pipe (31) is transported into the air distribution cover (41), and then flows into a plurality of air distribution pipes (42) from the air distribution cover (41), the air distribution pipes (42) transport the airflow to different parts of the filter bag (2), the air injection ring (43) connected with the air distribution pipe (42) transports the gas into a plurality of air injection pipes (51), and finally the gas is simultaneously impacted on different parts of the filter bag (2) through the pressure nozzle (52) to remove dust; S3, the airflow drives the driving device (10) to start: in the process of transporting the airflow along the air distribution pipe (42) to the air injection ring (43), the airflow flows into the shell (101) through the air inlet pipe (104), the airflow blows the turbine (102) to rotate, the turbine (102) rotates to drive the driving shaft (103) to rotate, so as to convert the kinetic energy of the airflow into the kinetic energy of the rotation of the driving shaft (103); S4, the driving shaft (103) drives the knocking device (8) to start: the driving shaft (103) drives the eccentric wheel (82) to rotate, the eccentric wheel (82) eccentrically rotates to drive the knocking rod (81) to slide along the radial direction of the center rod (62) axis, the knocking rod (81) drives the flexible sleeve (30) to abut against the filter bag (2), the knocking and vibration of the filter bag (2) are completed, and the knocking and dust removal of the filter bag (2) are completed; S5, the reset device (9) drives the knocking rod (81) to separate from the filter bag (2): with the rotation of the eccentric wheel (82), the eccentric wheel (82) pushes the knocking rod (81) to slide, and the knocking rod (81) drives the positioning ring (91) to compress the elastic element (92), when the eccentric wheel (82) rotates to push the adjacent knocking rod (81), the elastic element (92) pushes the positioning ring (91) to drive the knocking rod (81) to slide to the inside of the mounting shell (93), so that the knocking rod (81) separates from the filter bag (2), and the filter bag (2) is ensured to quickly recover to the initial state under the action of its own elasticity.

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