Electrical engineering and automatic dust removal device thereof

Abstract

The invention provides an electric engineering and automatic dust removal device thereof, and relates to the technical field of electric engineering dust removal, the electric engineering dust removal device comprises a filtering tank body, and further comprises a multi-stage filtering assembly, a water distribution filtering assembly and a cavity layering assembly; the multi-stage filtering assembly comprises a water collecting ring fixedly connected to the filtering tank body, a plurality of water collecting pipes are fixedly connected to the interior of the water collecting ring, a fixing ring seat is fixedly connected to the outer side of each water collecting pipe, positioning sieve plates are fixedly connected to the upper end and the lower end of each fixing ring seat, and flow guide sieve holes are formed in the positioning sieve plates; the water distribution filtering assembly comprises mounting supports fixedly connected to the two ends of the outer side of the filtering tank body, and water distribution pipes are fixedly connected into the mounting supports; by means of the design, the effects of recycling water resources and reducing the water supplementing cost are achieved, and the problem that in the background technology, bag dust removal has no waste water recycling function and traditional spraying is high in water consumption is solved, and the problem that the local efficiency is suddenly reduced due to the fact that a filtering blind area is formed after bag dust removal is used is solved.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology in electrical engineering, and more particularly to a dust removal device for electrical engineering and its automation. Background Technology

[0002] The dust removal device for electrical engineering and automation is a compact wet dust removal system designed specifically for electrical locations such as power distribution rooms and frequency converter rooms. It is driven by the airflow itself to agitate the impeller, requiring no additional power. It can recycle wastewater online and automatically adjust the water volume, achieving efficient PM2.5 capture and zero manual cleaning. In its initial stages, baghouse dust collection technology can indeed effectively intercept and capture fine dust particles in the air, playing a certain role in purification.

[0003] However, in actual operation, after a period of use, a thick layer of dust will gradually adhere to the surface of the filter bag. This dust is not only difficult to remove, but will also form a so-called filtration blind zone on the surface of the filter bag. The appearance of this blind zone will cause the dust removal efficiency in the local area to drop sharply. As a result, the overall performance of the dust removal system will show a significant efficiency decline and will no longer be able to operate as efficiently as in the early stages. Therefore, in response to the above problems, a dust removal device for electrical engineering and automation is proposed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dust removal device for electrical engineering and its automation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: 1. A dust removal device for electrical engineering and automation, comprising a filter tank, and further comprising a multi-stage filter assembly, a water distribution filter assembly, and a chamber stratification assembly; The multi-stage filtration assembly includes a water collection ring fixedly connected to the filter tank. Several water collection pipes are fixedly connected inside the water collection ring. A fixed ring seat is fixedly connected to the outside of each water collection pipe. Positioning screen plates are fixedly connected to both the upper and lower ends of the fixed ring seat. The positioning screen plates have flow guiding screen holes inside. The water distribution and filtration assembly includes mounting supports fixedly connected to both ends of the outer side of the filter tank, a water distribution pipe fixedly connected inside the mounting supports, a water distribution nozzle fixedly connected to the outer side of the water distribution pipe, and a connecting ring fixedly connected to the inner wall of the filter tank. The chamber layering assembly includes a primary filtration chamber located at the bottom of the filter tank, and a secondary filtration chamber located at the top of the filter tank.

[0006] Preferably, a central connecting column is fixedly connected inside the connecting ring, a water distribution plate is fixedly connected to the top of the central connecting column, and a stirring impeller is fixedly connected to the bottom of the central connecting column.

[0007] The technical effects of adopting the above-mentioned technical solution are as follows: through the synergistic effect of multi-stage filtration components, water distribution filtration components, and chamber stratification components, dust removal efficiency can be effectively improved, and the generation of filtration blind spots can be avoided. Specifically, the multi-stage filtration components, through the combined design of water collection rings, water collection pipes, fixed ring seats, and positioning screen plates, achieve preliminary filtration and guidance of the dust-laden airflow, ensuring uniform airflow distribution. The water distribution filtration components utilize water distribution pipes and nozzles to evenly spray water mist into the filter tank, ensuring full contact with the dust-laden airflow and further capturing fine dust particles. The chamber stratification components, through the setting of primary and secondary filtration chambers, achieve graded filtration of the airflow, improving the overall dust removal effect.

[0008] Preferably, an exhaust manifold is fixedly connected to the top of the filter tank, and an intake manifold is fixedly connected to the bottom of the filter tank.

[0009] The technical effects of adopting the above technical solution are as follows: by setting an exhaust manifold at the top of the filter tank, it can be ensured that the clean air after multi-stage filtration and purification can be discharged smoothly, avoiding secondary pollution or pressure accumulation in the tank. The intake manifold fixed at the bottom is responsible for stably introducing the dust-laden airflow into the filter tank, providing a continuous and uniform airflow input for the entire dust removal process. This layout design of the upper and lower manifolds not only optimizes the airflow path and reduces turbulence and dead zones in the tank, but also improves the overall operational stability and efficiency of the dust removal device.

[0010] Preferably, a water delivery pipe is fixedly connected to the outer side of the water collection ring, and a circulating water pump is installed at the bottom end of the water delivery pipe.

[0011] The technical effect of adopting the above technical solution is as follows: by setting a water delivery pipe and installing a circulating water pump on the outside of the water collection ring, a water circulation system can be formed to ensure that the water distribution and filtration components work continuously and stably. The circulating water pump delivers the filtered water back to the water collection ring, and then sprays it evenly through the water distribution pipe and water distribution nozzle. This not only improves the water resource utilization rate, but also enhances the contact effect between the water mist and the dust-laden airflow, thereby further improving the dust removal efficiency.

[0012] Preferably, the upper and lower ends of the water delivery conduit are fixedly connected to the mounting bracket, and the water delivery conduit is connected to the water distribution pipe.

[0013] The technical effect of adopting the above technical solution is that by fixing the upper and lower ends of the water supply pipe to the installation support and ensuring that it is connected to the water distribution pipe, a stable and efficient water circulation system can be constructed. This design not only enhances the stability of the structure and prevents the connection from loosening due to water flow impact or equipment vibration, but also ensures the continuity and uniformity of water circulation, so that water mist can be continuously and stably sprayed into the filter tank and fully contact the dust-laden airflow, thereby effectively improving the dust removal effect.

[0014] Preferably, the multi-stage filtration assembly is placed between the primary filtration chamber and the secondary filtration chamber, and both ends of the multi-stage filtration assembly are respectively attached to the inner walls of the two filtration chambers.

[0015] The technical effect of adopting the above technical solution is as follows: placing the multi-stage filter assembly between the primary and secondary filter chambers, with its two ends respectively in contact with the inner walls of the two filter chambers, ensures that the dust-laden airflow must undergo more detailed filtration through the multi-stage filter assembly after initial filtration through the primary filter chamber, and then enter the secondary filter chamber for further purification. This effectively avoids the airflow bypassing the filter assembly and forming filtration dead zones, ensuring comprehensive and efficient filtration of the airflow by the entire dust removal device, and further improving the overall performance and dust removal efficiency of the dust removal device.

[0016] Preferably, the water collecting pipes inside the water collecting ring are evenly distributed in a ring shape, and the interior of each water collecting pipe is connected to the internal cavity of the water collecting ring.

[0017] The technical effect of adopting the above technical solution is that the water collection pipes inside the water collection ring are designed to be evenly distributed in a ring, and the interior of each water collection pipe is connected to the internal cavity of the water collection ring. This layout enables the water flow to be evenly and smoothly distributed to each water collection pipe. Then, through the fixed ring seat and positioning screen plate on the outside of the water collection pipe, the dust-laden airflow is evenly and effectively pre-filtered and guided, avoiding the problem of reduced filtration efficiency caused by uneven water flow distribution or poor airflow guidance, thereby improving the operational stability and dust removal effect of the entire dust removal device.

[0018] Preferably, the positioning screen plates at the upper and lower ends of the fixed ring seat are arranged in a symmetrical structure, and the guide screen holes are evenly opened in a matrix on the positioning screen plates.

[0019] The technical effect of adopting the above technical solution is that the positioning screen plates at the upper and lower ends of the fixed ring seat are designed as symmetrical structures, and the guide screen holes are evenly opened in a matrix on the positioning screen plates. This design can ensure that the dust-laden airflow is subjected to uniform and stable resistance when passing through the positioning screen plates, so that the airflow can be evenly distributed and pass through the screen holes along a predetermined path, avoiding the problem of filtration blind spots or reduced filtration efficiency caused by uneven airflow distribution. At the same time, the evenly opened matrix of guide screen holes can also increase the contact area between the airflow and the screen plate.

[0020] Preferably, the water distribution nozzles are spaced apart along the length of the water distribution pipe, and the water outlet of the water distribution nozzles faces the internal central area of ​​the filter tank.

[0021] The technical effect of adopting the above technical solution is that the water distribution nozzles are distributed at intervals along the length of the water distribution pipe, and their water outlets face the internal center area of ​​the filter tank. This layout can ensure that the water mist is sprayed into the filter tank in a uniform and wide-coverage manner, and fully contact and mix with the dust-laden airflow entering from all directions, thereby effectively capturing fine dust particles in the airflow and improving the contact efficiency and capture effect of water mist and dust.

[0022] Preferably, the bottom end of the exhaust manifold is connected to the interior of the secondary filter chamber, and the top end of the intake manifold is connected to the interior of the primary filter chamber.

[0023] The technical advantages of the above solution are as follows: By connecting the bottom of the exhaust manifold to the interior of the secondary filtration chamber and the top of the intake manifold to the interior of the primary filtration chamber, this design ensures that the dust-laden airflow, after initial filtration in the primary filtration chamber via the intake manifold, undergoes deep purification through multiple filtration components and the secondary filtration chamber, before finally being smoothly discharged through the exhaust manifold. This airflow path design not only optimizes the dust removal process and reduces turbulence and dead zones within the tank, but also ensures the efficient and stable operation of the entire dust removal device, further enhancing the dust removal effect.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. Dust-laden gas is introduced into the primary filtration chamber through the main air inlet pipe, which drives the impeller at the bottom of the central connecting column to rotate with the airflow. The impeller further drives the dust-laden gas in the primary filtration chamber to fully mix with the water mist sprayed by the water distribution nozzle. This design achieves the benefits of no additional power consumption and reduced equipment operation and maintenance costs. It not only avoids the risk of failure of additional power equipment, but also solves the problem of insufficient pre-dust removal caused by dust sticking to the filter bags in the early stage of bag dust collection. 2. The circulating water pump is started, driving the water delivery pipe to pressurize and transport the dust removal wastewater recovered by the water collection ring to the water distribution pipe. The water distribution pipe then drives the water distribution nozzles to continuously spray centrifugal atomized water, ultimately forming a closed-loop water supply system consisting of the water collection ring, water delivery pipe, water distribution pipe, water distribution nozzles, and water collection ring. This design achieves the benefits of water resource recycling and reduces water replenishment costs, addressing the problems of baghouse dust collectors lacking wastewater recovery and traditional spraying methods consuming high amounts of water in the background technology. It also solves the problem of sudden drops in efficiency in localized areas caused by the formation of filtration blind spots after the use of baghouse dust collectors. 3. The dust-laden gas, after initial purification, breaks through the multi-stage filtration components and enters the secondary filtration chamber. As the gas flows through the positioning screen plates above and below the fixed ring seat, fine dust particles are physically intercepted by the matrix-type guide screen holes. Simultaneously, the water distribution plate at the top of the central connecting column drives the water mist from the water distribution nozzles to further refine the dust. The refined water mist further drives the residual PM2.5 particles to collide and settle. This design achieves the benefits of efficient fine dust collection and meets the low emission requirements of electrical environments. It avoids the vicious cycle of filter bag blind spots and efficiency degradation, ensuring that the dust removal efficiency remains stable in the high-efficiency range during long-term operation of the equipment. It eliminates the need for frequent shutdowns for cleaning and is suitable for the continuous operation requirements of power distribution rooms. 4. The connecting ring on the inner wall of the filter tank drives the radial displacement of the central connecting column through the guide groove, thereby driving the stirring impeller and the water distribution plate to maintain stable operation. This design achieves the benefits of vibration-free equipment operation and protection of surrounding electrical equipment. It avoids the safety hazards of vibration affecting the insulation performance of equipment in places such as power distribution rooms, and solves the problem of uneven stress on filter bags and accelerated damage caused by component shaking in bag dust collectors. Attached Figure Description

[0025] Figure 1 A perspective view of a dust removal device for electrical engineering and automation provided by the present invention; Figure 2 A schematic diagram of the filter tank structure of a dust removal device for electrical engineering and automation provided by the present invention; Figure 3 A schematic diagram of a water distribution nozzle structure for a dust removal device in electrical engineering and automation provided by the present invention; Figure 4 A schematic diagram of a positioning sieve plate structure for a dust removal device for electrical engineering and automation provided by the present invention; Figure 5 A schematic diagram of the water collection pipe structure of a dust removal device for electrical engineering and automation provided by the present invention; Figure 6 A schematic diagram of a fixed ring seat structure for a dust removal device for electrical engineering and automation provided by the present invention; Figure 7This is a schematic diagram showing the water distribution and filtration assembly of a dust removal device for electrical engineering and automation provided by the present invention.

[0026] Legend; 1. Filter tank; 2. Multi-stage filtration assembly; 21. Water collection ring; 22. Water collection pipe; 23. Fixing ring seat; 24. Positioning screen plate; 25. Flow guide screen holes; 3. Water distribution and filtration assembly; 31. Mounting support; 32. Water distribution pipe; 33. Water distribution nozzle; 34. Connecting ring; 35. Diversion water distribution plate; 36. Central connecting column; 37. Agitator impeller; 4. Chamber layering assembly; 41. Primary filter chamber; 42. Secondary filter chamber; 43. Exhaust main pipe; 44. Intake main pipe; 45. Water supply pipe; 46. Circulating water pump. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment provides a technical solution: a dust removal device for electrical engineering and its automation, including a filter tank 1, characterized in that it further includes a multi-stage filter assembly 2, a water distribution filter assembly 3, and a chamber layering assembly 4; The multi-stage filtration assembly 2 includes a water collecting ring 21 fixedly connected to the filter tank 1. Several water collecting pipes 22 are fixedly connected inside the water collecting ring 21. A fixing ring seat 23 is fixedly connected to the outside of each water collecting pipe 22. Positioning screen plates 24 are fixedly connected to both the upper and lower ends of the fixing ring seat 23. The positioning screen plates 24 have guide screen holes 25 inside. The multi-stage filtration assembly 2 is placed between the primary filtration chamber 41 and the secondary filtration chamber 42, and both ends of the multi-stage filtration assembly 2 are respectively attached to the inner walls of the two filtration chambers. The several water collecting pipes 22 inside the water collecting ring 21 are evenly distributed in a ring, and the interior of each water collecting pipe 22 is connected to the internal cavity of the water collecting ring 21. The positioning screen plates 24 at the upper and lower ends of the fixing ring seat 23 are symmetrically arranged, and the guide screen holes 25 are evenly opened in a matrix on the positioning screen plates 24. The water collection ring 21 adopts an annular cavity structure with an inner diameter smaller than that of the filter tank 1. The cavity volume is designed according to the number of water collection pipes 22 and the flow rate of a single pipe, ensuring that wastewater is collected without stagnation. An interface corresponding to the water collection pipe 22 is opened on the inner side of the water collection ring 21, using a welded sealing connection. A backflow prevention valve is installed at the interface to prevent wastewater from overflowing backwards. A connection flange for the water delivery conduit 45 is reserved on the outer side, equipped with a pressure monitoring interface, which can monitor the pressure status of the water circulation system in real time. The annular cavity design improves the uniformity of wastewater distribution and prevents backflow caused by excessive water volume in a single water collection pipe 22, thus preventing wastewater from flowing back into the filter cavity and affecting the dust removal effect. The pressure monitoring interface can be connected to an automated control system to realize abnormal pressure alarms and improve the efficiency of the system. The intelligent operation and maintenance level of the device is improved. The water collection pipe 22 is evenly distributed along the circumference of the water collection ring 21, and the included angle of adjacent water collection pipes 22 is equal to ensure that the entire filter section is covered. The pipe body and the fixed ring seat 23 are fixed by threads for easy disassembly and maintenance. The fixed ring seat 23 adopts a ring steel plate structure, and the connection position with the water collection pipe 22 is set with reinforcing ribs to enhance the structural rigidity. Screen plate mounting grooves are opened at the upper and lower ends. The groove width is larger than the thickness of the positioning screen plate 24. The rubber sealing strip is used to achieve sealing and fixing. The upper and lower layers of the positioning screen plate 24 are symmetrically arranged to form a double-layer filter structure. The flow guiding screen holes 25 are arranged in a matrix of round holes. The edges of the screen plate are rounded to avoid sharp edges scratching the seals and reduce the resistance when the airflow passes through. like Figure 1 , Figure 2 and Figure 7 As shown, the water distribution and filtration assembly 3 includes mounting supports 31 fixedly connected to both ends of the outer side of the filter tank 1. A water distribution pipe 32 is fixedly connected inside the mounting supports 31. A water distribution nozzle 33 is fixedly connected to the outer side of the water distribution pipe 32. A connecting ring 34 is fixedly connected to the inner wall of the filter tank 1. A central connecting column 36 is fixedly connected inside the connecting ring 34. A diversion water distribution plate 35 is fixedly connected to the top of the central connecting column 36. An agitator impeller 37 is fixedly connected to the bottom of the central connecting column 36. The water distribution nozzles 33 are spaced apart along the length of the water distribution pipe 32, and the water outlet of the water distribution nozzles 33 faces the central area inside the filter tank 1. Mounting supports 31 are fixed to both ends of the outer side of the filter tank 1 by expansion bolts. The spacing between supports is designed according to the length of the water distribution pipe 32. An arc-shaped groove is opened on the top of the support to match the outer diameter of the water distribution pipe 32. It is clamped and fixed with bolts. A rubber pad is laid in the groove to reduce vibration transmission. The water distribution nozzle 33 adopts a centrifugal atomizing nozzle to meet the needs of capturing fine dust. The water outlet faces the center area inside the filter tank 1 to ensure that the water mist covers the entire filter cross section. The connecting ring 34 adopts a ring-shaped steel plate structure and is fixed to the inner wall of the filter tank 1 by welding. A guide groove is opened on the inner side of the connecting ring 34 to match the center connection. The positioning protrusion of column 36 enhances the support strength of the central connecting column 36 and resists the impact of airflow and water flow. The length of the central connecting column 36 is designed according to the height of the filter tank 1 to ensure that the diversion water distribution plate 35 is located below the water distribution nozzle 33 and the stirring impeller 37 is located in the middle of the primary filtration chamber 41. The two ends of the column are fixed to the diversion water distribution plate 35 and the stirring impeller 37 by threaded connection and locking nuts to prevent loosening. The diversion water distribution plate 35 adopts a circular steel plate structure with an arc-shaped surface design to guide the water mist sprayed by the water distribution nozzle 33 to diffuse in all directions and avoid water droplets from directly impacting the plate surface. like Figure 2 and Figure 3 As shown, the chamber layer assembly 4 includes a primary filtration chamber 41 located at the bottom of the filter tank 1, a secondary filtration chamber 42 located at the top of the filter tank 1, an exhaust manifold 43 fixedly connected to the top of the filter tank 1, and an air inlet manifold 44 fixedly connected to the bottom of the filter tank 1. A water supply conduit 45 is fixedly connected to the outside of the water collection ring 21, and a circulating water pump 46 is installed at the bottom of the water supply conduit 45. The upper and lower ends of the water supply conduit 45 are fixedly connected to the mounting bracket 31, and the water supply conduit 45 is connected to the water distribution pipe 32. The bottom of the exhaust manifold 43 is connected to the interior of the secondary filtration chamber 42, and the top of the air inlet manifold 44 is connected to the interior of the primary filtration chamber 41. The height of the primary filtration chamber 41 is below the filter tank 1, and its volume is designed according to the settling time of large dust particles to facilitate the collection of settled dust. The height of the secondary filtration chamber 42 is above the total height of the filter tank 1. The interior is reserved for the installation space of the multi-stage filtration components 2 and the diversion water distribution plate 35 to ensure that the gas is deeply filtered before being discharged. The two chambers are physically separated by the multi-stage filtration components 2 to form independent filtration areas and avoid airflow cross-flow. The bottom end of the exhaust main pipe 43 is connected to the top flange of the secondary filtration chamber 42. A filter screen is installed at the connection to prevent dust from entering the pipe and causing blockage. The top end of the intake main pipe 44 is connected to the bottom flange of the primary filtration chamber 41. The water supply pipe 45 is fixed to the mounting bracket 31 with pipe clamps to ensure that the pipe is firmly fixed. The circulating water pump 46 is equipped with a frequency converter, which can adjust the speed according to the signal of the dust concentration sensor to achieve precise flow control.

[0029] Working principle; like Figure 1 - Figure 7 As shown; In actual use, the dust-laden gas is first introduced into the primary filtration chamber 41 inside the filter tank 1 through the main air inlet pipe 44 of the chamber stratification component 4. Then, the impeller 37 at the bottom of the central connecting column 36 rotates with the airflow impact or linkage structure, which can drive the dust-laden gas in the primary filtration chamber 41 to fully mix with the water mist sprayed by the water distribution nozzles 33 of the water distribution filter component 3. This causes large dust particles to quickly settle to the bottom of the primary filtration chamber 41 under the action of agitation, thereby driving the primary dust removal stage to complete the initial dust separation, and then driving the circulating water pump 46 to start. The dust removal wastewater collected by the water collection ring 21 of the multi-stage filtration assembly 2 is pressurized and transported to the water distribution pipe 32 through the water supply pipe 45, continuously providing atomized water to the water distribution nozzles 33. This enables the water distribution filtration assembly 3 to form a closed-loop water supply system for wastewater circulation and water mist spraying, avoiding water waste. At the same time, the centrifugal atomization design of the water distribution nozzles 33 can evenly cover the cross-sections of the primary filtration chamber 41 and the secondary filtration chamber 42 with water mist, enhancing the gas-liquid contact efficiency. Subsequently, the preliminarily purified dust-laden gas breaks through the multi-stage filtration assembly 2 and enters the secondary filtration chamber 42, passing through the solid... When the positioning screen plates 24 are symmetrically positioned on the upper and lower sides of the fixed ring seat 23, the fine dust in the dust-laden gas can be physically intercepted by the matrix-type guide screen holes 25. At the same time, the water mist sprayed by the water distribution nozzles 33 is further refined by the diversion water distribution plate 35 at the top of the central connecting column 36. Then, the refined water mist further collides and settles with the residual fine dust in the secondary filtration chamber, improving the depth filtration effect. Subsequently, the wastewater that flows back after the positioning screen plates 24 intercept the dust is collected into the cavity of the water collection ring 21 through the water collection pipe 22 welded to the inner side of the water collection ring 21, thus driving the wastewater to flow through the water conveyance system. The conduit 45 re-enters the circulating water pump 46, while the connecting ring 34 on the inner wall of the filter tank 1 restricts the radial displacement of the central connecting column 36, ensuring the stable operation of the stirring impeller 37 and the water distribution plate 35. This, in turn, drives the purified gas in the secondary filtration chamber 42 to be discharged from the filter tank 1 through the exhaust manifold 43. This allows the pressure monitoring interface on the outside of the water collection ring 21 to provide real-time feedback on the water circulation pressure. If the pressure is abnormal, an automatic alarm is triggered. At the same time, the circulating water pump 46 can adjust its speed and control the water distribution flow rate based on the dust concentration sensor signal from the air intake manifold 44.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An electric engineering and automation dust removal device comprising a filter tank (1), characterized in that, It also includes multi-stage filtering assembly (2), water distribution filtering assembly (3) and chamber stratification assembly (4); The multi-stage filtering assembly (2) includes a water collecting ring (21) fixedly connected to the filtering tank body (1), a plurality of water collecting pipes (22) fixedly connected inside the water collecting ring (21), a fixed ring seat (23) fixedly connected to the outer side of each water collecting pipe (22), a positioning sieve plate (24) fixedly connected to the upper and lower ends of the fixed ring seat (23), and a flow guide sieve hole (25) formed in the inside of the positioning sieve plate (24). The water distribution filtering assembly (3) includes a mounting support (31) fixedly connected to the outer two ends of the filtering tank body (1), a water distribution pipe (32) fixedly connected inside the mounting support (31), a water distribution nozzle (33) fixedly connected to the outer side of the water distribution pipe (32), and a connecting ring (34) fixedly connected to the inner wall of the filtering tank body (1). The chamber stratification assembly (4) includes a first filtering cavity (41) formed in the inside bottom end of the filtering tank body (1), and a second filtering cavity (42) formed in the inside top end of the filtering tank body (1).

2. A dust extraction device for electrical engineering and its automation according to claim 1, characterized in that: The connecting ring (34) is fixedly connected with a center connecting column (36) in the inside, the top end of the center connecting column (36) is fixedly connected with a shunt water distribution plate (35), and the bottom end of the center connecting column (36) is fixedly connected with an agitator impeller (37).

3. A dust extraction device for electrical engineering and its automation according to claim 1, characterized in that: The top end of the filtering tank body (1) is fixedly connected with an exhaust main pipe (43), and the bottom end of the filtering tank body (1) is fixedly connected with an intake main pipe (44).

4. A dust extraction device for electrical engineering and its automation according to claim 1, characterized in that: The outer side of the water collecting ring (21) is fixedly connected with a water conveying guide pipe (45), and the bottom end of the water conveying guide pipe (45) is mounted with a circulating water pump (46).

5. An electric engineering and its automation dust removal device according to claim 4, characterized in that: The upper and lower ends of the water conveying guide pipe (45) are fixedly connected to the mounting support (31), and the water conveying guide pipe (45) is in communication with the water distribution pipe (32).

6. A dust extraction device for electrical engineering and its automation according to claim 1, characterized in that: The multi-stage filtering assembly (2) is arranged between the first filtering cavity (41) and the second filtering cavity (42), and the two ends of the multi-stage filtering assembly (2) are respectively attached to the inner walls of the two filtering cavities.

7. An electric engineering and its automation dust removal device according to claim 1 characterized in that: The plurality of water collecting pipes (22) in the inside of the water collecting ring (21) are evenly distributed in a ring shape, and the inside of each water collecting pipe (22) is in communication with the inside cavity of the water collecting ring (21).

8. A dust extraction device for electrical engineering and its automation according to claim 1, characterized in that: The positioning sieve plates (24) at the upper and lower ends of the fixed ring seat (23) are arranged in a symmetrical structure, and the flow guide sieve holes (25) are evenly formed in a matrix on the positioning sieve plates (24).

9. An electric engineering and its automation dust removal device according to claim 1, characterized in that: The water distribution nozzles (33) are spaced apart along the length direction of the water distribution pipe (32), and the water outlet ports of the water distribution nozzles (33) face the inside central area of the filtering tank body (1).

10. An electric engineering and its automation dust removal device according to claim 3, characterized in that: The bottom end of the exhaust main pipe (43) is in communication with the inside of the second filtering cavity (42), and the top end of the intake main pipe (44) is in communication with the inside of the first filtering cavity (41).

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