Electro-bag composite dust removal equipment

Abstract

The utility model relates to dust removal equipment technical field discloses a kind of electric bag composite dust removal equipment, including shell, the bottom end of shell is fixedly connected with hopper, the hopper is connected with the collecting device of outside, the inside of shell is provided with electric bag collection assembly and cleaning assembly, the electric bag collection assembly includes the carousel of being set in the inside of shell, the carousel is rotatably connected with the inner wall of shell.This electric bag composite dust removal equipment, through the carousel rotation of driving motor, gear meshing ring self-rotation, make electrostatic adsorption plate and cloth bag synchronous rotation, so that the dust adsorbed is evenly distributed, avoid local overload block, greatly improve overall dust removal efficiency, conductive slip ring and conductive slider cooperate, ensure that electrostatic adsorption plate is powered continuously, framework supports cloth bag and prevents deformation, prolongs the service life of core component, cleaning assembly, which is composed of high-pressure gas pump and bellows, can intermittently vibrate and fall dust to reduce blockage, reduce manual maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, specifically to an electrostatic precipitator-bag filter composite dust removal device. Background Technology

[0002] The electrostatic precipitator-bag filter hybrid dust collector is a new type of composite dust collector that combines the principles of electrostatic precipitator and bag filter. Dust-laden gas, driven by an induced draft fan, first enters the flue gas pretreatment chamber. In this chamber, high-temperature gas is cooled and sparks are removed, high-resistivity dust is treated to reduce its resistance, and excessively dry flue gas is appropriately humidified. The treated flue gas then enters a high-voltage electric field through an airflow distribution device. Within this field, dust particles become charged and, under the influence of the electric field, deviate from the main airflow direction, moving towards the collecting electrodes and being captured. The gas, after passing through the high-voltage electrostatic precipitator, enters the inlet chamber of the bag filter. Dust particles are trapped on the outside of the filter bags, further purifying the gas before it is released into the atmosphere by the fan.

[0003] An existing patent (publication number: CN218222903U) discloses an electrostatic precipitator-baghouse hybrid dust collector, including an electrostatic precipitator-baghouse hybrid dust collector, an electrode plate, and a filter bag. It also includes a PTFE woven filter bag and a reinforcing cage for the filter bag. The reinforcing cage includes a spring tension ring, a stainless steel rod, a stainless steel ring, an inclined connecting rod, and an end ring. The electrode plate is bolted to one end of the electrostatic precipitator-baghouse hybrid dust collector, and the filter bag is disposed at the other end of the electrostatic precipitator-baghouse hybrid dust collector. The bottom of the electrostatic precipitator-baghouse hybrid dust collector is welded with a dust hopper corresponding to the electrode plate and the filter bag.

[0004] The aforementioned patent, during its use, utilizes a composite electrostatic precipitator and bag filter assembly to provide a combined electrostatic precipitator and bag filter mechanism for flue gas. The bag filter, composed of PTFE woven filter bags and a reinforcing cage, significantly extends the overall lifespan of the electrostatic precipitator. As dust-laden gas passes through the PTFE woven filter bags, the bags provide excellent support and intercept airborne dust particles. However, in actual use, because the overall air inlet position, as well as the positions of the electrode plates and bag filter, are fixed and arranged front and back, the front electrode plates and bag filter receive a large amount of dust as airflow continues, while the rear electrode plates and bag filter receive less dust. This results in significant differences in dust removal efficiency across different areas. The front components are prone to clogging or performance degradation due to excessive load, while the rear components are partially idle and cannot fully utilize their filtration capacity. Consequently, the overall dust removal effect and operational stability of the equipment are affected. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electrostatic precipitator-bag filter composite dust collector, which has the advantage of uniform dust distribution in the electrode plate and filter bag areas, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electrostatic precipitator-baghouse hybrid dust collector, comprising a housing, a dust hopper fixedly connected to the bottom end of the housing, the dust hopper being connected to an external collection device, and an electrostatic precipitator-baghouse collection assembly and a cleaning assembly being provided inside the housing;

[0007] The electrostatic bag collection assembly includes a turntable disposed inside the outer shell, the turntable being rotatably connected to the inner wall of the outer shell, and multiple gears being rotatably connected to the upper surface of the turntable. Each gear has a slot on its upper surface, through which the slot passes. The upper surface of the turntable has a through-hole corresponding to the slot, the through-hole being larger than the slot. A cloth bag is disposed inside the through-hole, the top of the cloth bag being fixed to the corresponding gear. A connecting ring is inserted into the inner wall of the through-hole, the top of the connecting ring being fixed to the gear, and multiple electrostatic adsorption plates are mounted on the bottom surface of the connecting ring.

[0008] Furthermore, a frame is fixed to the bottom surface of the gear, the cloth bag is fitted onto the outer surface of the frame, a bearing ring is fixed to the inner wall of the frame, a conductive slip ring is installed on the upper surface of the bearing ring, and the side of the conductive slip ring is connected to the electrostatic adsorption plate through a cable.

[0009] The above solution supports the bag with a frame, which also supports the bearing ring and maintains the stability of the conductive slip ring.

[0010] Furthermore, multiple fixing frames are fixed on the upper surface of the turntable, and a conductive slider is installed on the other end of each fixing frame. The other end of the conductive slider is in contact with the corresponding conductive slip ring.

[0011] The above solution ensures the stability of the conductive slider by using a fixed frame, and the contact between the conductive slip ring and the conductive slider allows the electrostatic adsorption plate to continuously receive power, thus ensuring the stable operation of the electrostatic adsorption function.

[0012] Furthermore, a toothed ring is fixed to the inner wall of the outer casing, and the toothed ring meshes with a gear.

[0013] With the above scheme, when the turntable rotates, the gear will rotate under the action of the gear ring, thereby driving the electrostatic adsorption plate and the filter bag to rotate synchronously, so that the dust can be evenly distributed on the surface of each electrostatic adsorption plate and filter bag, avoiding the impact of excessive dust concentration in local areas on dust removal efficiency.

[0014] Furthermore, the cleaning assembly includes a high-pressure air pump mounted on the upper surface of the housing, an electric actuator mounted on the upper surface of the housing, a baffle mounted on the output end of the electric actuator, a corrugated pipe fixed to the bottom end of the baffle, and the output end of the high-pressure air pump connected to the bottom surface of the baffle through a pipe.

[0015] The above scheme uses an electric actuator to lower a baffle, which in turn lowers a bellows into a slot on the upper surface of a gear. This connects the output of a high-pressure air pump to the filter bag. The high-pressure air pump then intermittently pumps air to shake off the dust adsorbed on the outer surface of the filter bag and the outer surface of the electrostatic adsorption plate.

[0016] Furthermore, a drive motor is mounted on the upper surface of the housing, and the output end of the drive motor is connected to the turntable.

[0017] The above method enables the drive motor to rotate the turntable.

[0018] Furthermore, an air intake pipe and an exhaust pipe are installed on the side of the housing, with the air intake pipe located below the turntable and the exhaust pipe located above the turntable.

[0019] With the above method, the gas to be filtered enters the interior of the outer shell through the air inlet pipe, and then enters the top of the turntable after being filtered by the electrostatic adsorption plate and the cloth bag.

[0020] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0021] This electrostatic precipitator and bag filter composite dust collector uses a drive motor to rotate a turntable, and the gear meshing with the toothed ring rotates synchronously, causing the electrostatic adsorption plate and the filter bag to rotate synchronously. This ensures that the adsorbed dust is evenly distributed, avoids local overload and blockage, and significantly improves the overall dust removal efficiency. The conductive slip ring and conductive slider work together to ensure continuous power supply to the electrostatic adsorption plate, and the frame supports the filter bag to prevent deformation and extend the service life of the core components. The cleaning component, consisting of a high-pressure air pump and a corrugated pipe, can intermittently shake off dust to reduce blockage and reduce the frequency of manual maintenance. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present application;

[0023] Figure 2 This is a diagram showing the internal structure of the overall casing of this application;

[0024] Figure 3 This is a side view of the overall gear of this application;

[0025] Figure 4 This is a sectional view of the overall bag side view of this application;

[0026] Figure 5 For the purposes of this application as a whole Figure 4 An enlarged schematic diagram of the structure at point A in the middle.

[0027] In the picture:

[0028] 1. Outer shell; 2. Ash hopper;

[0029] 3. Electrostatic bag collection assembly; 301. Turntable; 302. Gear; 303. Cloth bag; 304. Connecting ring; 305. Electrostatic adsorption plate; 306. Frame; 307. Bearing ring; 308. Conductive slip ring; 309. Fixing frame; 310. Conductive slider;

[0030] 4. Cleaning components; 401. High-pressure air pump; 402. Electric actuator; 403. Baffle; 404. Corrugated pipe;

[0031] 5. Gear ring; 6. Drive motor; 7. Intake pipe; 8. Exhaust pipe. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 - Figure 5 An electrostatic precipitator-baghouse hybrid dust collector in this embodiment includes a housing 1. A dust hopper 2 is fixedly connected to the bottom of the housing 1 and is connected to an external collection device. An electrostatic precipitator-baghouse hybrid dust collector assembly 3 and a cleaning assembly 4 are arranged inside the housing 1. The electrostatic precipitator-baghouse hybrid dust collector assembly 3 includes a turntable 301 disposed inside the housing 1. The turntable 301 is rotatably connected to the inner wall of the housing 1. Multiple gears 302 are rotatably connected to the upper surface of the turntable 301. Each gear 302 has a slot on its upper surface, through which the slot passes. A through-hole corresponding to the slot is formed on the upper surface of the turntable 301. The size of the through-hole is larger than that of the slot. A cloth bag 303 is disposed inside the through-hole. The top of the cloth bag 303 is fixed to the corresponding gear 302. A connecting ring 304 is inserted into the inner wall of the through-hole. The top of the connecting ring 304 is fixed to the gear 302. Multiple electrostatic adsorption plates 305 are installed on the bottom surface of the connecting ring 304.

[0034] Please see Figure 3 , Figure 4 and Figure 5A frame 306 is fixed to the bottom surface of the gear 302. The cloth bag 303 is sleeved on the outer surface of the frame 306. A bearing ring 307 is fixed to the inner wall of the frame 306. A conductive slip ring 308 is installed on the upper surface of the bearing ring 307. The side of the conductive slip ring 308 is connected to the electrostatic adsorption plate 305 through a cable. The frame 306 supports the cloth bag 303 and also supports the bearing ring 307, and maintains the stability of the conductive slip ring 308 through the bearing ring 307. Multiple fixing brackets 309 are fixed to the upper surface of the turntable 301. A conductive slider 310 is installed on the other end of each fixing bracket 309. The other end of the conductive slider 310 contacts the corresponding conductive slip ring 308. The fixing brackets 309 maintain the stability of the conductive slider 310. The contact between the conductive slip ring 308 and the conductive slider 310 allows the electrostatic adsorption plate 305 to continuously receive power supply, ensuring the stable operation of the electrostatic adsorption function.

[0035] Please see Figure 3 , Figure 4 and Figure 5 A gear ring 5 is fixed to the inner wall of the outer casing 1. The gear ring 5 meshes with the gear 302. When the turntable 301 rotates, the gear 302 rotates under the action of the gear ring 5, thereby driving the electrostatic adsorption plate 305 and the filter bag 303 to rotate synchronously. This allows the dust to be evenly distributed on the surface of each electrostatic adsorption plate 305 and filter bag 303, avoiding the impact of excessive dust concentration in local areas on dust removal efficiency. The cleaning component 4 includes a high-pressure air pump 401 installed on the upper surface of the outer casing 1. An electric push rod 402 is installed on the upper surface of the outer casing 1. A baffle 403 is installed at the output end of 02. A corrugated pipe 404 is fixed at the bottom end of the baffle 403. The output end of the high-pressure air pump 401 is connected to the bottom surface of the baffle 403 through a pipe. The baffle 403 is driven to descend by the electric push rod 402. The baffle 403 drives the corrugated pipe 404 to descend into the slot opened on the upper surface of the gear 302, so that the output end of the high-pressure air pump 401 is connected to the filter bag 303. The dust adsorbed on the outer surface of the filter bag 303 and the outer surface of the electrostatic adsorption plate 305 is shaken off by the intermittent pumping of the high-pressure air pump 401.

[0036] Please see Figure 2 , Figure 3 and Figure 4 A drive motor 6 is installed on the upper surface of the outer casing 1. The output end of the drive motor 6 is connected to the turntable 301. The drive motor 6 can drive the turntable 301 to rotate. An air inlet pipe 7 and an exhaust pipe 8 are installed on the side of the outer casing 1. The air inlet pipe 7 is located below the turntable 301, and the exhaust pipe 8 is located above the turntable 301. The gas to be filtered enters the interior of the outer casing 1 through the air inlet pipe 7, and then enters the upper part of the turntable 301 after being filtered by the electrostatic adsorption plate 305 and the cloth bag 303.

[0037] It should be noted that when dust removal is required, the power supply to the electrostatic adsorption plate 305 is stopped, the electric push rod 402 is started, the electric push rod 402 pushes the baffle 403 to move downward, the baffle 403 drives the bellows 404 to move downward synchronously, until the bottom end of the bellows 404 is inserted into the groove on the upper surface of the gear 302, forming a sealed gas channel.

[0038] The working principle of the above embodiment is as follows: Under the action of an external fan, the dust-laden gas enters the interior of the outer shell 1 through the air inlet pipe 7 on the side of the outer shell 1. The initial airflow first contacts the electrostatic adsorption plate 305 below the turntable 301. Large dust particles are first captured by the charged electrostatic adsorption plate 305. The remaining airflow containing small dust particles passes through the cloth bag 303 at the through-hole of the turntable 301. The dust is intercepted by the outside of the cloth bag 303 to complete secondary filtration. The clean gas after double filtration gathers in the area above the turntable 301 and is finally discharged through the exhaust pipe 8 on the side of the outer shell 1, realizing the separation of dust and gas.

[0039] The drive motor 6 on the upper surface of the outer casing 1 starts, causing the turntable 301 to rotate slowly around its own axis. All the gears 302, electrostatic adsorption plates 305 and filter bags 303 on the turntable 301 revolve synchronously with the turntable 301, constantly switching their contact positions with the dust-laden airflow. The toothed ring 5 fixed on the inner wall of the outer casing 1 meshes with the gears 302. When the turntable 301 revolves, the gears 302 rotate due to the reaction force of the tooth surface of the toothed ring 5, which in turn drives the electrostatic adsorption plates 305 and filter bags 303 below the gears 302 to rotate synchronously. The combination of revolution and rotation ensures that each set of electrostatic adsorption plates 305 and filter bags 303 can periodically contact the dust-laden airflow discharged from the air inlet pipe 7, avoiding the problem of overload of the front components and idle rear components in traditional fixed structures.

[0040] Meanwhile, the frame 306 on the bottom of the gear 302 not only supports the bag 303 to prevent deformation, but also has a conductive slip ring 308 fixed on its inner wall bearing ring 307; the fixing frame 309 on the upper surface of the turntable 301 supports the conductive slider 310, and the conductive slider 310 is always in sliding contact with the conductive slip ring 308. The external power supply continuously supplies power to the electrostatic adsorption plate 305 through the conductive slider 310-conductive slip ring 308-cable, ensuring that the electrostatic adsorption plate 305 always maintains a charged state, stably captures large dust particles, and reduces the filtration load of the bag 303.

[0041] To prevent dust accumulation and clogging of the filter components, the cleaning component 4 uses intermittent high-pressure air jets to shake off the dust. The electric push rod 402 on the upper surface of the outer shell 1 extends, driving the baffle 403 and the corrugated pipe 404 at the bottom to descend. The end of the corrugated pipe 404 is embedded in the groove on the upper surface of the gear 302, achieving a sealed connection between the high-pressure air pump 401 and the inside of the filter bag 303. The high-pressure air pump 401 delivers high-pressure airflow to the bottom surface of the baffle 403. The airflow enters the inside of the filter bag 303 through the corrugated pipe 404, instantly impacting the filter bag 303 and causing it to expand outward. At the same time, the airflow blows in the opposite direction towards the surface of the electrostatic adsorption plate 305, shaking off the dust attached to both. The shaken-off dust falls into the dust hopper 2 at the bottom of the outer shell 1 under the action of gravity. The dust hopper 2 is connected to an external collection device, which periodically discharges the dust to prevent secondary dust re-entrainment. Through the integrated design of rotational dust equalization, electrostatic and filter bag 303 synergistic filtration, and automatic cleaning, the problems of uneven dust removal area and local overload clogging in traditional equipment are solved, achieving efficient and stable dust removal.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hybrid electrostatic precipitator and bag filter, comprising a housing (1), characterized in that: The bottom end of the outer shell (1) is fixedly connected to a ash hopper (2), which is connected to an external collection device. An electric bag collection assembly (3) and a cleaning assembly (4) are provided inside the outer shell (1). The electrostatic bag collection assembly (3) includes a turntable (301) disposed inside the outer shell (1). The turntable (301) is rotatably connected to the inner wall of the outer shell (1). Multiple gears (302) are rotatably connected to the upper surface of the turntable (301). Each gear (302) has a slot on its upper surface. The slot passes through the gear (302). The upper surface of the turntable (301) has a through-hole corresponding to the slot. The size of the through-hole is larger than the size of the slot. A cloth bag (303) is disposed inside the through-hole. The top of the cloth bag (303) is fixed to the corresponding gear (302). A connecting ring (304) is inserted into the inner wall of the through-hole. The top of the connecting ring (304) is fixed to the gear (302). Multiple electrostatic adsorption plates (305) are installed on the bottom surface of the connecting ring (304).

2. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: A frame (306) is fixed to the bottom surface of the gear (302), and the cloth bag (303) is sleeved on the outer surface of the frame (306). A bearing ring (307) is fixed to the inner wall of the frame (306), and a conductive slip ring (308) is installed on the upper surface of the bearing ring (307). The side of the conductive slip ring (308) is connected to the electrostatic adsorption plate (305) through a cable.

3. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: The upper surface of the turntable (301) is fixed with a plurality of fixing brackets (309), and the other end of each fixing bracket (309) is equipped with a conductive slider (310), and the other end of the conductive slider (310) is in contact with the corresponding conductive slip ring (308).

4. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: A toothed ring (5) is fixed to the inner wall of the outer shell (1), and the toothed ring (5) meshes with the gear (302).

5. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: The cleaning assembly (4) includes a high-pressure air pump (401) installed on the upper surface of the housing (1). An electric push rod (402) is installed on the upper surface of the housing (1). A baffle (403) is installed at the output end of the electric push rod (402). A corrugated pipe (404) is fixed at the bottom end of the baffle (403). The output end of the high-pressure air pump (401) is connected to the bottom surface of the baffle (403) through a pipe.

6. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: A drive motor (6) is mounted on the upper surface of the outer casing (1), and the output end of the drive motor (6) is connected to the turntable (301).

7. The electrostatic precipitator / bag filter composite dust collector according to claim 1, characterized in that: An air intake pipe (7) and an exhaust pipe (8) are installed on the side of the outer casing (1). The air intake pipe (7) is located below the turntable (301), and the exhaust pipe (8) is located above the turntable (301).

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