A dust filtering device

Abstract

The application discloses a dust filtering device, which is suitable for the field of industrial smoke emission treatment and comprises a filter box, a filter core, a cooling assembly and a water cooling mechanism. The cooling assembly is connected with a smoke inlet pipe, a valve and a protection mechanism to treat flue gas. A double-power motor is used to drive an air suction fan, and the air suction efficiency is improved by 30 degrees of attack angle of fan blades. A centrifugal mechanism is expanded mechanically by power switching, and a linkage valve mechanism controls a liquid spraying device to perform secondary cooling and cleaning on the filter core. The water cooling mechanism performs primary circulation cooling through pre-embedded heat exchange pipes. The protection mechanism is provided with a cleaning mechanism, which is driven by a driving power through a belt to drive a screw rod and a scraper to automatically discharge pollutants. The application solves the problems of traditional devices, such as easy aging of the filter core, complex cleaning, poor reliability and the like, has the advantages of efficient filtering, intelligent cooling, automatic pollution discharge, reliable mechanical transmission and the like, is suitable for high-temperature and high-dust scenes, prolongs the service life of the filter core and reduces operation and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of industrial dust emission treatment, and more particularly to a dust filtration device. Background Technology

[0002] In the field of industrial flue gas emission treatment, the technological bottlenecks of traditional filtration devices are becoming increasingly prominent with the tightening of environmental standards and the increasing complexity of industrial operating conditions. Taking typical high-temperature and high-dust scenarios such as steel smelting, thermal power generation, and chemical production as examples, traditional filter elements (such as ceramic filter media, metal fiber felt, or activated carbon filter layers) are prone to material lattice distortion, pore structure collapse, or failure of chemically active sites due to continuous heat load when filtering flue gas at temperatures above 400°C for extended periods. This manifests as decreased filtration accuracy, a sharp increase in resistance, and even structural damage. According to industry statistics, the average service life of traditional filter elements under high-temperature conditions is only 3-6 months, and replacement costs account for more than 40% of equipment maintenance expenses. Furthermore, frequent shutdowns for filter element replacement severely impact production continuity.

[0003] The lack of automatic cleaning capability is a core pain point of traditional equipment. Acidic gases such as SO2 and NOx contained in the flue gas condense into sticky aerosols, which, along with dust particles, adhere to the filter element surface, forming a stubborn scale layer that can be 5-10 mm thick. Traditional equipment relies on manual periodic disassembly of the filter element for high-pressure water washing or ultrasonic cleaning, with each maintenance session taking 8-12 hours, and manual operation easily causing mechanical damage to the filter element. In catalytic cracking units in the petrochemical industry, filter element clogging caused by untimely cleaning can increase system pressure drop by more than 30 kPa, increase fan energy consumption by 25%, and even induce safety accidents such as flue gas backfire.

[0004] In summary, the shortcomings of traditional filtration devices in terms of high temperature resistance, cooling efficiency, cleaning automation, and environmental adaptability make it difficult to meet the current industrial sector's urgent needs for long-term stable operation, low maintenance costs, and ultra-low emissions. It is imperative to break through the technical bottlenecks through mechanical structure innovation and multi-system collaborative design.

[0005] Therefore, we propose a dust filtration device. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dust filtration device.

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

[0008] A dust filtration device includes a filtration assembly comprising a filter box and a filter element disposed within the filter box. The filter box is equipped with a cooling assembly, which includes a flue gas inlet. The flue gas inlet contains a drive mechanism, a valve mechanism, and a protection mechanism. The drive mechanism draws external flue gas into the filter box. The valve mechanism drives the drive mechanism and the protection mechanism. The protection mechanism sprays cleaning liquid onto the filter element. The filter box also includes a water cooling mechanism, which includes a heat exchange tube embedded within the filter element. The heat exchange tube is connected to an external heat exchange box via a connecting pipe to achieve water-cooled circulating cooling of the filter element.

[0009] As a further improvement of the present invention, the driving mechanism includes a motor fixed to the inner wall of the smoke inlet, and a suction fan is coaxially provided at the output end of the motor. The angle of attack between the fan blades and the air inlet hole on the periphery of the smoke inlet is 30 degrees.

[0010] As a further improvement of the present invention, the motor is provided with two power thresholds Aa and Ab; the drive mechanism further includes a centrifugal mechanism, the centrifugal mechanism including a rotating shaft fixed to the other end of the suction fan shaft, a fixed sleeve provided on the outer periphery of the rotating shaft, a fixed sleeve fixed seat symmetrically provided on the outer periphery of the fixed sleeve, a second hinge rod symmetrically hinged to the inner wall of the fixed sleeve fixed seat, a first hinge rod hinged to the second hinge rod, a counterweight ball fixedly provided at the end of the second hinge rod away from the fixed sleeve fixed seat; a sliding seat and a hinge ring are slidably provided on the outer periphery of the rotating shaft, the hinge ring is fixedly connected to the bottom end of the sliding seat and has a hinge groove, the other end of the first hinge rod is hinged to the inner wall of the sliding seat, and the valve passage mechanism is connected to the drive mechanism through the hinge ring.

[0011] As a further improvement of the present invention, in the non-centrifugal state, the included angle between the two hinge rods is 50 degrees; in the centrifugal state, the included angle between the two hinge rods is 140 degrees; when the motor is driven by power Aa, the centrifugal mechanism is in the non-centrifugal state; when the motor is driven by power Ab, the centrifugal mechanism is in the centrifugal state and drives the sliding seat to slide upward along the rotation axis.

[0012] As a further improvement of the present invention, the valve passage mechanism includes a water inlet pipe communicating with the protection mechanism. A ball valve is provided at the connection between the water inlet pipe and the protection mechanism. The ball valve is a three-way ball structure and is fixedly connected to a rotating disk. A positioning post is eccentrically provided on the rotating disk. A connecting rod is hinged in the hinge groove of the hinge ring. A T-shaped drive rod is fixedly provided at one end of the connecting rod. A limit groove is opened at the end of the drive rod away from the connecting rod. The positioning post is located in the limit groove so that the ball valve can be rotated by the lifting and lowering of the drive rod.

[0013] As a further improvement of the present invention, the protection mechanism includes an L-shaped support plate fixed to the bottom of the filter box, a plurality of through holes being evenly opened on the upper surface of the support plate, and the end of the rotating shaft away from the suction fan being rotatably connected to the side wall of the support plate; a spray pipe is fixedly provided on the support plate, and nozzles for spraying liquid to the filter element for cooling are arranged in an array on the outer periphery of the spray pipe.

[0014] As a further improvement of the present invention, in the water cooling mechanism, the filter box is provided with a plurality of filter elements arranged in a rectangular shape, the heat exchange tubes correspond one-to-one with the filter elements, the plurality of heat exchange tubes are interconnected by a connecting pipe, the two ends of the connecting pipe are connected to the heat exchange box by a connecting pipe, the connecting pipes serve as the water inlet and the water outlet respectively, and the water inlet is located above the water outlet.

[0015] As a further improvement of the present invention, the protection mechanism further includes a cleaning mechanism, which includes a pulley rotatably mounted on the support plate, a transmission wheel fixedly mounted on the outer periphery of the rotating shaft and connected to the pulley via a belt drive, a reciprocating screw fixedly mounted on the shaft of the pulley, and a scraper threadedly connected to the screw, reciprocating along its length. An outlet is provided at the bottom of the filter box. As a further improvement of the present invention, when the motor drives the suction fan to rotate, the rotating shaft drives the pulley to rotate via the transmission wheel and belt, and the screw rotates synchronously, driving the scraper to reciprocate, thereby squeezing the wastewater flowing down the through holes of the support plate to the outlet for discharge.

[0016] As a further improvement of the present invention, an air outlet channel is provided on the upper surface of the filter box. External flue gas enters the filter box through the air inlet of the flue, is filtered by the filter element, and is discharged through the air outlet channel. When the nozzle sprays liquid, it cools and cleans the high-temperature flue gas and the surface of the filter element. The scraper cooperates to realize the automatic discharge of sewage.

[0017] The beneficial effects of this invention are:

[0018] This invention significantly improves flue gas intake efficiency through a 30-degree angle of attack design between the fan blades and the air inlet. The motor's dual power thresholds enable adaptive adjustment under various operating conditions, saving energy at low power and enhancing processing capacity at high power. The centrifugal mechanism triggers mechanical expansion via rotational speed, automatically opening the liquid spray channel under high load without electronic components. This, combined with the water cooling mechanism's initial cooling and the liquid spray device's secondary cooling and cleaning, effectively prevents high-temperature aging and impurity blockage of the filter element, extending its service life. The cleaning mechanism utilizes the drive mechanism's power to automatically discharge wastewater via belt drive, moving a reciprocating screw and scraper, avoiding wastewater accumulation. The purely mechanical transmission structure adapts to harsh operating conditions, reducing failure and maintenance costs. All mechanisms work together to form a complete "high-efficiency intake - dual cooling - automatic cleaning" chain, improving system stability, durability, and filtration efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Partial structural diagram;

[0021] Figure 3 This is a schematic diagram of the axial structure of the cooling assembly of the present invention;

[0022] Figure 4 This is a schematic diagram of part of the protective mechanism of the present invention;

[0023] Figure 5 For the present invention Figure 3 Partial structural diagram;

[0024] Figure 6 For the present invention Figure 5 Cross-sectional view of valve passage mechanism;

[0025] Figure 7 This is a schematic diagram of the drive mechanism of the present invention;

[0026] Figure 8 For the present invention Figure 3 A frontal view of the structure.

[0027] Reference numerals: 100, Filter assembly; 101, Filter box; 102, Filter element; 200, Water cooling mechanism; 201, Heat exchange box; 202, Connecting pipe; 203, Heat exchange tube; 300, Cooling assembly; 30, Smoke inlet; 31, Drive mechanism; 311, Motor; 312, Suction fan; 313, Rotating shaft; 3131, Rotating wheel; 314, Hinge ring; 315, Sliding seat; 316, Hinge rod one; 3 17. Counterweight ball; 318. Hinge rod two; 319. Fixed sleeve; 3191. Fixed sleeve fixing seat; 32. Valve mechanism; 321. Water inlet pipe; 322. Ball valve; 323. Rotating disc; 324. Connecting rod; 325. Drive rod; 33. Protection mechanism; 331. Bearing plate; 333. Pulley; 334. Lead screw; 335. Through hole; 336. Scraper; 337. U-tube; 338. Nozzle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown herein can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0029] Example 1

[0030] refer to Figures 1-2 The diagram illustrates a specific embodiment of a dust filtration device according to the present invention. It includes a filtration assembly 100, comprising a filter box 101 and a filter element 102 disposed within the filter box 101. The filter box 101 is also equipped with a cooling assembly 300 for drawing external flue gas into the filter box 101 for filtration. The cooling assembly 300 includes a flue gas inlet 30 fixedly disposed on one side of the outer periphery of the filter box 101. The flue gas inlet 30 contains a drive mechanism 31, a valve opening mechanism 32, and a protection mechanism 33. The drive mechanism 31 draws external flue gas into the filter box 101 and can adjust the suction power. The protection mechanism 33 sprays cleaning liquid onto the filter element 102. The valve opening mechanism 32 drives the drive mechanism 31 and the protection mechanism 33, and opens the liquid inlet channel of the protection mechanism 33 after the drive mechanism 31 increases the suction power.

[0031] The flue 30 has several air inlets on its circumference and the filter box 101 has an exhaust channel on its circumference. The gas flows from the air inlets on the outer circumference of the flue 30 into the filter box 101 and is filtered by the filter element 102 inside the filter box 101. The filtered gas is then discharged through the exhaust channel on the filter box 101.

[0032] Furthermore, the filter element 102, which filters high-temperature flue gas for a long time, will have an increased risk of aging or damage as the temperature rises. Therefore, the filter box 101 is also equipped with a water cooling mechanism 200 for cooling the filter element 102 by water cooling circulation. The water cooling mechanism 200 includes heat exchange tubes 203 embedded in the filter element 102. The filter box 101 is equipped with a number of filter elements 102 (including but not limited to 6). The heat exchange tubes 203 correspond one-to-one with the filter elements 102. The number of filter elements 102 are distributed in a rectangular shape in the filter box 101. The number of heat exchange tubes 203 are connected by connecting pipes and are interconnected with each other. Both ends of the heat exchange tubes 203 are connected by connecting pipes (the top cross section of the connecting pipe is not limited to rectangular). Connecting pipes 202 are connected to the connecting pipes at both ends. A heat exchange box 201 is also provided on one side of the filter box 101. The other ends of the two connecting pipes 202 are connected to the heat exchange box 201.

[0033] Among them, the two connecting pipes 202 are the water inlet and the water outlet, respectively. The water inlet is located above the water outlet. The condensate in the heat exchange box 201 achieves preliminary heat exchange with the filter element 102 through the connecting pipe 202, the connecting pipe and the heat exchange pipe 203, thereby alleviating the problem of the filter element 102's temperature rising after long-term filtration of high-temperature flue gas.

[0034] When filter element 102 begins to filter high-temperature flue gas, heat exchange box 201 is opened. Water flows into the connecting pipe from the inlet and is transferred to several heat exchange tubes 203 through the connecting pipe. At this time, the temperature of filter element 102 is higher than the temperature of the condensate in the heat exchange tubes 203. According to the principle of heat exchange, the high-temperature heat in filter element 102 is absorbed by the low-temperature condensate in the heat exchange tubes 203. The temperature of the condensate gradually increases, and the temperature of filter element 102 gradually decreases. The condensate that has undergone heat exchange flows back to heat exchange box 201 through the outlet pipe and is re-condensed. It is then put back into the inlet to exchange heat with filter element 102. This process continues until the flue gas filtration process is completed, and then heat exchange box 201 is closed.

[0035] In summary, after the flue gas enters the filter box 101 through the flue duct 30, it can be filtered by the filter element 102 to obtain ordinary gas with harmful substances removed. At the same time, while the filter element 102 is filtering the flue gas, the water cooling mechanism 200 exchanges heat with the filter element 102, so that the filter element 102 will not be in a high temperature state for a long time, thereby effectively improving the service life of the filter element 102.

[0036] Example 2

[0037] Please refer to Figures 3-8 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0038] As a further technical solution of this embodiment, the drive mechanism 31 includes a motor 311 fixedly mounted on the inner wall of the smoke inlet 30. The output end of the motor 311 is coaxially provided with a suction fan 312, wherein the angle of attack between each fan blade and several air inlets in the suction fan 312 is 30 degrees. When the output end of the motor 311 drives the suction fan 312 to rotate, the flue gas outside the smoke inlet 30 can be sucked into the filter box 101 more quickly.

[0039] The motor 311 has two power thresholds, Aa and Ab, where the power of Ab is 5 times that of Aa.

[0040] The drive mechanism 31 also includes a centrifugal mechanism fixedly mounted on the other end of the suction fan 312. The centrifugal mechanism includes a rotating shaft 313 fixedly mounted on the other side of the suction fan 312. A fixed sleeve 319 is fixedly mounted on the outer periphery of the rotating shaft 313. A fixed sleeve fixing seat 3191 is symmetrically mounted on the outer periphery of the fixed sleeve 319. A second hinge rod 318 is symmetrically hinged to the inner wall of the fixed sleeve fixing seat 3191. A first hinge rod 316 is hinged to the second hinge rod 318. A counterweight ball 317 is fixedly mounted at the end of the second hinge rod 318 away from the fixed sleeve fixing seat 3191. A sliding seat 315 and a hinge ring 314 are also slidably mounted on the outer periphery of the rotating shaft 313. The hinge ring 314 is fixedly connected to the bottom end of the sliding seat 315. A hinge groove is opened on the hinge ring 314. The other end of the first hinge rod 316 is hinged to the inner wall of the sliding seat 315. The valve opening mechanism 32 is connected to the drive mechanism 31 through the hinge ring 314.

[0041] In the non-centrifugal state, the included angle between the two hinge rods 318 is 50 degrees, and in the centrifugal state, the included angle between the two hinge rods 318 is 140 degrees.

[0042] Furthermore, when the motor 311 drives the suction fan 312 to rotate with power Aa, the centrifugal mechanism is in a non-centrifugal state; when the motor 311 drives the suction fan 312 to rotate with power Ab, the centrifugal mechanism is in a centrifugal state.

[0043] When the motor 311 drives the suction fan 312 to rotate at power Ab, the shaft driving force of the motor 311 is transmitted to the rotating shaft 313. The rotating shaft 313 drives the fixed sleeve 319 to rotate. When the fixed sleeve 319 rotates, the fixed sleeve fixing seat 3191 fixed on the fixed sleeve 319 rotates with the fixed sleeve 319, thereby driving the hinge rod 318 hinged to the fixed sleeve 319 to rotate. During the rotation of the two hinge rods 318, the counterweight ball 317 fixedly connected to the other end of the hinge rod 318 will rotate around the axis of the rotating shaft 313. When the rotation speed is Ab, the centrifugal force generated by the rotation on the counterweight ball 317 will... Overcoming the downward gravity of the counterweight ball 317 and the hinge force of the hinge fixing sleeve fixing seat 3191 of the second hinge rod 318, the expansion is outward. At the same time, the opening of the hinge rod 316 hinged to the second hinge rod 318 and the second hinge rod 318 reduces the angle between the first hinge rod 316 and the second hinge rod 318. At this time, the sliding seat 315 rises as the angle between the first hinge rod 316 and the second hinge rod 318 decreases. Meanwhile, the sliding seat 315 is limited by the rotating shaft 313. Therefore, the sliding seat 315 will slide upward along the height direction of the rotating shaft 313 when centrifugal motion occurs, thereby driving the hinge ring 314 to slide upward along the height direction of the rotating shaft 313.

[0044] Furthermore, when the motor 311 drives the suction fan 312 to rotate with Aa power, the centrifugal force generated by the two counterweight balls 317 is not enough to overcome the downward gravity of the counterweight balls 317 and the hinge force of the hinged fixing sleeve fixing seat 3191 of the hinge rod 318, so that expansion does not occur.

[0045] The protection mechanism 33 includes a support plate 331 fixedly installed on the bottom surface of the filter box 101. The support plate 331 has an L-shaped cross-section. Several through holes 335 are evenly opened on the upper surface of the support plate 331. The end of the rotating shaft 313 away from the suction fan 312 is rotatably connected to one side wall of the support plate 331. A U-shaped tube 337 is fixedly installed on the support plate 331. Several nozzles 338 for spraying liquid to cool the filter element 102 are arrayed on the outer periphery of the U-shaped tube 337.

[0046] The valve mechanism 32 includes an inlet pipe 321 that is connected to the U-shaped pipe 337. The other end of the inlet pipe 321 is provided with an inlet tank and is connected to the inlet tank. A ball valve 322 is rotatably provided at the connection between the inlet pipe 321 and the U-shaped pipe 337 for opening or closing the inlet pipe 321 to inject water into the U-shaped pipe 337. The ball valve 322 has a spherical structure and a three-way structure. A rotating disk 323 is fixed on the ball valve 322, and a positioning column is eccentrically provided on the rotating disk 323.

[0047] A connecting rod 324 is hinged in the hinge groove of the hinge ring 314. A driving rod 325 is fixed at one end of the connecting rod 324. The driving rod 325 has a T-shaped structure. A limiting groove is opened at the end of the driving rod 325 away from the connecting rod 324. The positioning post is located in the limiting groove.

[0048] When the motor 311 drives the suction fan 312 to rotate at power Ab, the centrifugal force generated by the rotation on the counterweight ball 317 overcomes the downward gravity of the counterweight ball 317 and the hinge force of the hinge fixing sleeve fixing seat 3191 of the hinge rod 318, expanding outward. At the same time as the expansion, the hinge ring 314 slides upward along the height direction of the rotation axis 313, thereby driving the connecting rod 324 to rise synchronously. After the connecting rod 324 is pulled upward, the drive rod 325 follows the connecting rod. 324 is pulled upwards. At this time, the limiting groove of the drive rod 325 drives the positioning column to rotate along the axis of the rotating disk 323 through the centripetal pulling force, thereby driving the rotating disk 323 and the ball valve 322 to rotate in the same direction. When the upward pulling process ends, the three-way port on the ball valve 322 is connected to the openings at both ends of the water inlet pipe 321 and the U-shaped pipe 337, thereby realizing the valve stop and valve open of the ball valve 322 to the U-shaped pipe 337, and at the same time realizing the cleaning of the filter element 102 by the nozzle 338.

[0049] Specifically, during the filtration of high-temperature smoke by filter element 102, the filter element 102 is first cooled by the water cooling mechanism 200. When the motor 311 drives the suction fan 312 to rotate at power Ab, the filter element 102 needs to filter the high-temperature smoke with higher efficiency. At this time, the heat exchange and cooling of the filter element 102 by the water cooling mechanism 200 cannot quickly reduce the temperature of the filter element 102, which will lead to a reduction in the life of the filter element 102. At this time, when the connecting rod 324 drives the drive... When the lever 325 is pulled upward, the rotation of the ball valve 322 is driven to connect the water inlet pipe 321 and the U-shaped pipe 337. The water flows from the water inlet tank through the water inlet pipe 321 to the connection between the water inlet pipe 321 and the U-shaped pipe 337, and enters the U-shaped pipe 337 through the outlet on the ball valve 322. It is then sprayed upward through the nozzle 338. During the spraying process, not only can the high-temperature smoke be cooled, but the surface of the filter element 102 can also be cleaned and cooled again, thereby effectively improving the service life of the filter element 102.

[0050] In summary, the 30-degree angle of attack design of the fan blades and air inlet significantly improves flue gas intake efficiency and accelerates processing speed; the dual power threshold (Ab is five times Aa) enables adaptive adjustment under operating conditions, saving energy at low power and enhancing flue gas processing capacity at high power; the centrifugal mechanism and power-linked mechanical structure eliminate the need for additional control components, achieving intelligent response of "no action under low load, automatic start-up for cleaning and cooling under high load" by triggering centrifugal expansion through rotational speed, reducing system complexity and energy consumption; the L-shaped support plate 331 provides stable support while the spray nozzle 338 cools high-temperature smoke, cleans the surface of filter element 102, and provides secondary cooling under high load, effectively preventing the filter device from aging due to high temperature or clogging by impurities, extending the service life of filter element 102 and maintaining high-efficiency filtration; it can adapt to harsh environments, reduce electronic component wear, lower the probability of failure and maintenance costs, and improve the overall stability, durability, and operating efficiency of the system.

[0051] Example 3

[0052] Please refer to Figures 3-4 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0053] The protection mechanism 33 also includes a cleaning mechanism, which includes a pulley 333 rotatably mounted on the support plate 331 and a rotating wheel 3131 fixed on the outer periphery of the rotating shaft 313. The rotating wheel 3131 and the pulley 333 are connected by belt drive. A lead screw 334 is fixed at the center of one side of the shaft of the pulley 333. A scraper 336 is threaded on the lead screw 334. A water outlet is also opened at the bottom of the filter box 101.

[0054] When the motor 311 drives the suction fan 312 to rotate, it drives the rotating wheel 3131 to rotate through the rotating shaft 313. The rotating wheel 3131 transmits the rotational power to the pulley 333 through the belt. When the pulley 333 rotates, the lead screw 334 rotates synchronously (the lead screw 334 includes, but is not limited to, a reciprocating lead screw). At this time, the scraper 336 threaded on the lead screw 334 performs reciprocating linear motion along the length of the lead screw 334 when the lead screw 334 rotates.

[0055] Specifically, when the motor 311 drives the suction fan 312 to rotate at power Ab, the ball valve 322 will open and the nozzle 338 will spray water onto the filter element 102 for cleaning and secondary cooling. At this time, the high-temperature impurity water that is cleaned will fall onto the support plate 331 and flow into the bottom of the filter box 101 through several through holes 335 on the support plate 331. At this time, the scraper 336 will squeeze the falling water to the outlet for discharge when it scrapes back and forth, thereby reducing the accumulation of sewage in the filter box 101.

[0056] In summary, the cleaning mechanism utilizes the rotational power of the rotating shaft 313 via belt drive to drive the pulley 333, achieving energy saving without the need for an additional power source. The scraper 336, moving back and forth with the reciprocating screw 334, automatically scrapes and squeezes wastewater to the outlet for discharge, preventing wastewater accumulation in the filter box 101 that could lead to corrosion, odor, and equipment performance degradation. This forms a dual cleaning mechanism of "spray cleaning and mechanical scraping," improving the efficiency of impurity removal. Furthermore, the purely mechanical transmission structure is simple, reliable, and adaptable to harsh working conditions, reducing the wear and tear on electronic components and the frequency of manual maintenance. Simultaneously, it is linked with high-power water spray cleaning to construct a complete treatment chain from "cooling cleaning to wastewater collection and then to automatic discharge," enhancing system synergy and operational stability, extending equipment lifespan, and reducing overall costs.

[0057] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A dust filtration device, characterized in that: The system includes a filter assembly (100), which includes a filter box (101) and a filter element (102) disposed within the filter box (101). A cooling assembly (300) is provided on the filter box (101), which includes a flue gas inlet (30). The flue gas inlet (30) contains a drive mechanism (31), a valve opening mechanism (32), and a protection mechanism (33). The drive mechanism (31) is used to draw external flue gas into the filter box (101). The valve opening mechanism... The structure (32) is connected to the drive mechanism (31) and the protection mechanism (33). The protection mechanism (33) is used to spray cleaning liquid onto the filter element (102). The filter box (101) is also provided with a water cooling mechanism (200). The water cooling mechanism (200) includes a heat exchange tube (203) embedded in the filter element (102). The heat exchange tube (203) is connected to the external heat exchange box (201) through the connecting pipe (202) to realize water cooling circulation cooling of the filter element (102). The drive mechanism (31) includes a motor (311) fixed to the inner wall of the smoke inlet (30), and a suction fan (312) is coaxially provided at the output end of the motor (311). The angle of attack between the fan blades of the suction fan (312) and the air inlet hole on the periphery of the smoke inlet (30) is thirty degrees. The motor (311) has two power thresholds Aa and Ab; the drive mechanism (31) also includes a centrifugal mechanism, the centrifugal mechanism includes a rotating shaft (313) fixed to the axis of the other end of the suction fan (312), the rotating shaft (313) is provided with a fixed sleeve (319) on its outer periphery, the fixed sleeve (319) is provided with a fixed sleeve fixing seat (3191) symmetrically on its outer periphery, the fixed sleeve fixing seat (3191) is symmetrically hinged with a second hinge rod (318) on its inner wall, and a first hinge rod (318) is hinged on the second hinge rod (318). 316), the end of the second hinge rod (318) away from the fixed sleeve fixed seat (3191) is fixedly provided with a counterweight ball (317); the outer circumference of the rotating shaft (313) is slidably provided with a sliding seat (315) and a hinge ring (314), the hinge ring (314) is fixedly connected to the bottom end of the sliding seat (315) and has a hinge groove, the other end of the first hinge rod (316) is hinged to the inner wall of the sliding seat (315), and the valve passage mechanism (32) is connected to the drive mechanism (31) through the hinge ring (314); The valve passage mechanism (32) includes an inlet pipe (321) connected to the protection mechanism (33). A ball valve (322) is provided at the connection between the inlet pipe (321) and the protection mechanism (33). The ball valve (322) is a three-way ball structure and is fixedly connected to a rotating disk (323). A positioning post is eccentrically provided on the rotating disk (323). A connecting rod (324) is hinged in the hinge groove of the hinge ring (314). A T-shaped drive rod (325) is fixedly provided at one end of the connecting rod (324). A limit groove is opened at the end of the drive rod (325) away from the connecting rod (324). The positioning post is located in the limit groove so that the ball valve (322) can be rotated by the lifting and lowering of the drive rod (325). The protection mechanism (33) includes an L-shaped support plate (331) fixed to the bottom of the filter box (101). Several through holes (335) are evenly opened on the upper surface of the support plate (331). The end of the rotating shaft (313) away from the suction fan (312) is rotatably connected to the side wall of the support plate (331). A U-shaped tube (337) is fixed on the support plate (331). The outer periphery of the U-shaped tube (337) is arrayed with nozzles (338) for spraying liquid to the filter element (102) for cooling.

2. The dust filtration device according to claim 1, characterized in that: In the water cooling mechanism (200), the filter box (101) is provided with a plurality of filter elements (102) arranged in a rectangular shape. The heat exchange tubes (203) correspond one-to-one with the filter elements (102). The plurality of heat exchange tubes (203) are interconnected through a connecting pipe. The two ends of the connecting pipe are connected to the heat exchange box (201) through a connecting pipe (202). The connecting pipe (202) serves as the water inlet and the water outlet, respectively, with the water inlet located above the water outlet.

3. The dust filtration device according to claim 2, characterized in that: The protection mechanism (33) also includes a cleaning mechanism, which includes a pulley (333) rotatably mounted on the bearing plate (331). A rotating wheel (3131) is fixedly mounted on the outer periphery of the rotating shaft (313) and connected to the pulley (333) via belt drive. A reciprocating screw (334) is fixedly mounted on the shaft of the pulley (333). A scraper (336) that reciprocates along its length is threaded onto the screw (334). A water outlet is provided at the bottom of the filter box (101).

4. A dust filtration device according to claim 3, characterized in that: The filter box (101) has an exhaust channel on its upper surface. External flue gas enters the filter box (101) through the air inlet of the flue gas inlet (30), and is discharged through the exhaust channel after being filtered by the filter element (102). It also includes a nozzle (338). When the nozzle (338) sprays liquid, it cools and cleans the high-temperature flue gas and the surface of the filter element (102). The scraper (336) works in conjunction to realize the automatic discharge of sewage.

5. A dust filtration device according to claim 4, characterized in that: In the non-centrifugal state, the included angle between the two hinge rods (318) is 50 degrees; in the centrifugal state, the included angle between the two hinge rods (318) is 140 degrees; when the motor (311) is driven by power Aa, the centrifugal mechanism is in the non-centrifugal state; when the motor (311) is driven by power Ab, the centrifugal mechanism is in the centrifugal state and drives the sliding seat (315) to slide upward along the rotating shaft (313).

6. A dust filtration device according to claim 5, characterized in that: When the motor (311) drives the suction fan (312) to rotate, the rotating shaft (313) drives the pulley (333) to rotate through the rotating wheel (3131) and the belt. The lead screw (334) rotates synchronously and drives the scraper (336) to reciprocate, so as to squeeze the sewage flowing down the through hole (335) of the bearing plate (331) to the outlet for discharge.

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