A flue gas purification device having a dust particle capturing function

Abstract

This invention discloses a flue gas purification device with dust particle capture function, belonging to the technical field of flue gas purification equipment. It includes a mounting frame, a collection cylinder fixedly mounted in the middle of the mounting frame, an air inlet mechanism on the outside of the collection cylinder, an air inlet pipe connected to the outside of the collection cylinder, and a purification mechanism inside the collection cylinder. The purification mechanism includes a first filter plate and a second filter plate fixedly mounted inside the collection cylinder. A base is fixedly mounted at the bottom of the collection cylinder, and a first pump body is fixedly mounted at the top of the base. This invention forms a double-layer gradient filtration structure by setting the first and second filter plates distributed vertically inside the collection cylinder, combined with dedicated adsorption components inside the filter plates. Through a rotatable long cylinder and different types of solid adsorption packing materials, flue gas flows through the vent holes and through different packing layers, simultaneously achieving physical interception of dust and graded removal of gaseous harmful components through adsorption.

Description

Technical Field

[0001] This invention relates to the field of flue gas purification equipment technology, and in particular to a flue gas purification equipment with dust particle capture function. Background Technology

[0002] Industrial production processes generate large amounts of flue gas containing dust particles. This flue gas not only contains solid dust and particulate impurities, but also trace amounts of acidic harmful components, volatile pollutants, and fine aerosols. Direct discharge would cause serious air pollution and would not meet current industrial flue gas emission standards. Therefore, specialized flue gas purification equipment is required to remove dust and purify the flue gas before it can be discharged. Existing purification equipment mostly uses a single-layer filter plate structure, which can only achieve simple physical dust interception. The filtration level is single and cannot achieve gradient filtration. The capture effect of fine dust and adsorbed harmful impurities is poor. At the same time, traditional filter plates rely on a single filter material to achieve filtration function, making it difficult to treat acidic and trace harmful components in flue gas in real time. The flue gas purification accuracy is low and it is difficult to meet high-standard environmental emission requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a flue gas purification device with dust particle capture function, so as to solve the problem mentioned in the background art that it is impossible to achieve gradient gradation filtration and the capture effect of fine dust and adsorbed harmful impurities is poor.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a flue gas purification device with dust particle capture function, comprising a mounting frame, a collection cylinder fixedly mounted in the middle of the mounting frame, an air inlet mechanism provided on the outside of the collection cylinder, the air inlet mechanism including an air inlet pipe connected to the outside of the collection cylinder, a purification mechanism provided inside the collection cylinder, the purification mechanism including a first filter plate and a second filter plate fixedly mounted inside the collection cylinder, a base fixedly mounted at the bottom of the collection cylinder, a first pump body fixedly mounted at the top of the base, the input end of the first pump body connected to the first filter plate and the second filter plate through a suction pipe, a high-heat component provided inside the collection cylinder, the high-heat component including a purification box fixedly mounted inside the collection cylinder, the output end of the first pump body connected to the inside of the purification box through an exhaust pipe, multiple heating components fixedly mounted inside the purification box, a duct connected to the inside of the collection cylinder at the top of the purification box, and an exhaust pipe for discharging the purified flue gas at the top of the collection cylinder.

[0005] As a preferred embodiment of the present invention, the outer wall of the purification box is provided with a heat insulation cavity to isolate the heat flow inside the purification box, and a heat recovery pipe is installed inside the purification box, with a heat recovery device connected to the free end of the heat recovery pipe.

[0006] As a preferred embodiment of the present invention, an annular tube is provided at the inner top of the collection tube, and multiple air inlets are arranged in a circumferential array at equal intervals on the outer surface of the annular tube for secondary circulation and purification of the airflow inside the collection tube. One end of the annular tube is connected to the suction pipe.

[0007] As a preferred embodiment of the present invention, both the first filter plate and the second filter plate are provided with adsorption components. The adsorption components include an arc-shaped plate fixedly installed inside the first filter plate, and a long cylinder rotatably installed on the surface of the arc-shaped plate. A driving component is fixedly installed inside the first filter plate, and the output shaft of the driving component is fixedly connected to the long cylinder. Ventilation holes are provided at both ends of the long cylinder. The long cylinder is divided into a first slot and a second slot along the circumferential direction. Different types of solid adsorption fillers are filled in the first slot and the second slot respectively, and a barrier and limiting filter screen is provided between the first slot and the second slot.

[0008] As a preferred embodiment of the present invention, sealing gaskets are fixedly installed on the sides of the first filter plate and the second filter plate that are close to each other, and multiple multi-point grooves are opened on the surfaces of the first filter plate and the second filter plate that are close to each other. The collection cylinder is connected to the input end of the first pump body through the suction pipe.

[0009] As a preferred embodiment of the present invention, a rinsing assembly is provided between the first filter plate and the second filter plate. The rinsing assembly includes multiple sets of annular jet plates fixedly installed between the first filter plate and the second filter plate, and multiple nozzles are connected at the top and bottom of the annular jet plates for rinsing the surfaces of the first filter plate and the second filter plate. A second pump body is fixedly installed on the outer surface of the collection cylinder, and the output end of the second pump body is connected to the multiple sets of annular jet plates through an air outlet pipe.

[0010] As a preferred embodiment of the present invention, the output end of the second pump body is connected to the cavity between the first filter plate and the second filter plate through an air inlet pipe for gas circulation in the cavity between the first filter plate and the second filter plate, and the output end of the second pump body is also connected to a filter box for filtering the gas after rinsing.

[0011] As a preferred embodiment of the present invention, a spiral impeller is rotatably installed inside the air inlet pipe, a motor is fixedly installed at the top of the base, and a belt is installed between the output shaft of the motor and the spiral impeller for transmission.

[0012] As a preferred embodiment of the present invention, the air inlet pipe is provided with a guiding mechanism, the guiding mechanism including a protective plate connected to and installed on the air inlet pipe, a protective net for reducing the impact of flue gas impurities on the inside of the collection cylinder is fixedly installed on the inner surface of the protective plate away from the collection cylinder, a plurality of inclined guide vanes are fixedly installed on the inner wall of the protective plate near the protective net, and a plurality of wave-shaped baffle frames are staggered on the inner surface of the protective plate near the collection cylinder.

[0013] As a preferred embodiment of the present invention, the top of the base is provided with a sedimentation tank for settling large particulate impurities entering through the air inlet pipe, and the top of the sedimentation tank is connected to the bottom of the collection cylinder, and a slag discharge pipe is provided on one side of the sedimentation tank.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention forms a double-layer gradient filtration structure by setting a first filter plate and a second filter plate distributed vertically inside the collection cylinder. With the dedicated adsorption components inside the filter plates, and through the rotatable long cylinder and different types of solid adsorption packing materials, the flue gas flows through the air vents and through different packing layers, which can simultaneously achieve physical interception of dust and adsorption and graded removal of gaseous harmful components. At the same time, by driving the long cylinder to rotate in stages, the windward angle and adsorption channel of different packing areas can be switched as needed, which significantly improves the overall purification quality of flue gas.

[0015] 2. This invention utilizes a dedicated rinsing assembly between two sets of filter plates. Through a second pump body and an air outlet pipe connecting to an annular jet plate and multiple nozzles arranged vertically, it enables comprehensive jet rinsing and cleaning of the two filter plate surfaces. Simultaneously, a filter box provides secondary filtration of the rinsing circulating gas, allowing for gas circulation within the cavities between the filter plates. Combined with sealing gaskets and multi-point groove structures on the sides of the filter plates, it ensures filtration sealing and quickly removes accumulated dust during cleaning, solving the problems of dust accumulation and caking in traditional filter plates.

[0016] 3. This invention improves flue gas introduction efficiency by creating an active negative pressure air intake structure through a transmission structure with a spiral impeller inside the air inlet duct. Simultaneously, the air inlet duct is equipped with a guiding mechanism, using inclined guide vanes, a protective net, and a wave-shaped baffle frame to achieve flue gas stabilization, impurity pre-interception, and airflow drag reduction and rectification. Combined with a bottom sedimentation tank, large particulate impurities can be pre-sedied and collected, and slag can be periodically discharged through a slag discharge pipe. This effectively avoids high-speed impact and wear of large, hard particles on the internal filter plates and purification components, and also reduces air intake resistance and improves air intake uniformity.

[0017] 4. This invention introduces the pre-filtered flue gas into the purification chamber through a first pump body. Multiple heating components are used to achieve high-temperature pyrolysis of the flue gas, decomposing volatile organic compounds, fine aerosols, and other harmful impurities that are difficult to remove through physical filtration, thus achieving deep purification of the flue gas. Simultaneously, a heat insulation cavity is installed on the outer wall of the purification chamber, effectively preventing high-temperature overflow, reducing the surface temperature of the chamber, and minimizing heat loss. Combined with a heat recovery pipe, high-temperature waste heat can be recovered and reused, solving the drawbacks of traditional high-temperature purification equipment such as high energy consumption, large heat loss, and poor purification effect.

[0018] 5. This invention, by installing an annular pipe with multiple air inlets at the top of the collection cylinder, connects the annular pipe to the suction pipe to form a closed-loop circulating air path. This allows for secondary suction, circulating filtration, and high-temperature re-treatment of incompletely purified flue gas within the cylinder, avoiding incomplete purification in a single pass. Compared to traditional single-pass direct-flow purification structures, this significantly improves the long-term stability of flue gas purification and meets industrial environmental emission requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the collection tube of the present invention; Figure 4 This is a schematic diagram of the purification mechanism of the present invention; Figure 5 This is a schematic diagram of the internal structure of the purification box of the present invention; Figure 6 This is a schematic diagram of the internal structure of the second filter plate of the present invention; Figure 7 This is a schematic diagram of the internal structure of the long cylinder of the present invention; Figure 8 This is a schematic diagram of the rinsing assembly of the present invention; Figure 9 This is a schematic diagram of the air intake mechanism of the present invention; Figure 10 This is a schematic diagram of the guiding mechanism of the present invention.

[0020] In the diagram: 1. Mounting bracket; 2. Air inlet mechanism; 21. Air inlet duct; 22. Spiral impeller; 23. Motor; 24. Belt; 3. Base; 4. Guide mechanism; 41. Inclined guide vane; 42. Protective net; 43. Wave-shaped baffle frame; 44. Protective plate; 5. Collection cylinder; 6. Purification mechanism; 61. First filter plate; 62. First pump body; 63. Second filter plate; 64. Suction duct; 65. Annular duct; 66. Exit duct; 67. High-heat component; 71. Insulation chamber; 672. Purification box; 673. Heating component; 674. Heat recovery pipe; 675. Air guide pipe; 68. Exhaust pipe; 69. Adsorption assembly; 691. Sealing gasket; 692. Multi-point groove; 693. Long cylinder; 694. Drive component; 695. Arc plate; 696. Filter screen; 697. Vent hole; 7. Flushing assembly; 71. Air outlet pipe; 72. Second pump body; 73. Filter box; 74. Annular jet plate; 8. Sedimentation tank. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-10 This invention provides a flue gas purification device with dust particle capture function, including a mounting frame 1, a collection cylinder 5 fixedly mounted in the middle of the mounting frame 1, an air inlet mechanism 2 provided on the outside of the collection cylinder 5, the air inlet mechanism 2 including an air inlet pipe 21 connected to the outside of the collection cylinder 5, a purification mechanism 6 provided inside the collection cylinder 5, the purification mechanism 6 including a first filter plate 61 and a second filter plate 63 fixedly mounted inside the collection cylinder 5, a base 3 fixedly mounted at the bottom end of the collection cylinder 5, and a first pump body 62 fixedly mounted at the top end of the base 3. The input end is connected to the first filter plate 61 and the second filter plate 63 through the suction pipe 64. The inside of the collection cylinder 5 is equipped with a high-heat component 67, which includes a purification box 672 fixedly installed inside the collection cylinder 5. The output end of the first pump body 62 is connected to the inside of the purification box 672 through the air outlet pipe 66. Multiple heating components 673 are fixedly installed inside the purification box 672. The top of the purification box 672 is equipped with a duct pipe 675 that communicates with the inside of the collection cylinder 5. The top of the collection cylinder 5 is equipped with an exhaust pipe 68 for discharging the purified flue gas.

[0023] After the equipment is started, dusty flue gas from outside is sent into the cavity of the collection cylinder 5 through the inlet pipe 21. The flue gas first flows downward to the lower section of the collection cylinder 5, and then flows upward, passing through the first filter plate 61 and the second filter plate 63 installed inside the collection cylinder 5 in sequence. The dust particles carried in the flue gas are intercepted and blocked on the windward side of the first filter plate 61 and the second filter plate 63. The first pump body 62 above the base 3 starts to operate. After the first pump body 62 starts operating, it generates negative pressure suction inside the suction pipe 64. The suction pipe 64 draws the air from the outlet side of the first filter plate 61 and the second filter plate 63 through preliminary removal. The flue gas after dust removal is extracted; the extracted flue gas is transported through the exhaust pipe 66 to the purification chamber 672 inside the collection cylinder 5. Multiple heating components 673 inside the purification chamber 672 are activated simultaneously to continuously heat the flue gas entering the purification chamber 672 at high temperature, causing the volatile harmful pollutants inside the flue gas to decompose under high temperature conditions. After high-temperature purification, the flue gas is transported back to the inner cavity of the collection cylinder 5 through the air guide pipe 675 at the top of the purification chamber 672. Finally, the completely purified flue gas continues to rise and is discharged outward from the exhaust pipe 68 at the top of the collection cylinder 5. The flue gas flow is highly controllable, solving the problems of separation of dust filtration and deep flue gas purification in traditional equipment, large equipment footprint, and cumbersome flue gas transportation process.

[0024] In some embodiments, the outer wall of the purification chamber 672 is provided with a heat insulation cavity 671 to isolate the heat flow inside the purification chamber 672. A heat recovery pipe 674 is installed inside the purification chamber 672, and a heat recovery device is connected to the free end of the heat recovery pipe 674.

[0025] When the heating element 673 inside the purification chamber 672 continues to work and heats the flue gas at high temperature, the heat insulation cavity 671 on the outer wall of the purification chamber 672 retains still air to form a heat insulation layer. After the heat radiated outward by the heating element 673 is transferred to the wall of the purification chamber 672, the heat is blocked by the heat insulation cavity 671. The heat cannot pass through the wall and dissipate outward into the inner cavity of the collection cylinder 5 in large quantities, which can greatly reduce the heat dissipation of the purification chamber 672, reduce the heat loss of the heating element 673, and lower the temperature of the outer shell of the equipment. After the high-temperature flue gas completes the high-temperature decomposition reaction inside the purification box 672, part of the high-temperature flue gas flows back to the collection cylinder 5 through the gas guide pipe 675, while the other part of the high-temperature flue gas or the waste heat gas carried by the flue gas flows into the heat recovery pipe 674. The waste heat of the flue gas is transported outward along the heat recovery pipe 674 and flows through the pipeline to the external heat recovery equipment. The external heat recovery equipment collects and stores the waste heat, completes heat recovery, realizes secondary energy utilization, effectively reduces the energy consumption of the entire equipment under heating conditions, and achieves the effect of energy saving and environmental protection.

[0026] In some embodiments, an annular tube 65 is provided at the inner top of the collection tube 5, and multiple air inlet heads are arranged in an equidistant circular array on the outer surface of the annular tube 65 for secondary circulation and purification of the airflow inside the collection tube 5. One end of the annular tube 65 is connected to the suction tube 64.

[0027] In this process, multiple air inlets distributed on the outer side of the annular pipe 65 at the top of the collection cylinder 5 open to draw in air. The air inlets extract flue gas that has not yet met the emission standards and still contains pollutants from the upper space of the collection cylinder 5. The extracted flue gas enters the interior of the annular pipe 65 and flows along the pipe of the annular pipe 65 to the suction pipe 64. After the flue gas merges into the suction pipe 64, it is sent back into the purification box 672 for secondary filtration and high-temperature purification. The flue gas is circulated and purified until the pollutants are removed and meet the standards, thereby improving the pollutant removal rate and ensuring stable flue gas purification and emission.

[0028] In some embodiments, both the first filter plate 61 and the second filter plate 63 are provided with an adsorption component 69. The adsorption component 69 includes an arc-shaped plate 695 fixedly installed inside the first filter plate 61. A long cylinder 693 is rotatably installed on the surface of the arc-shaped plate 695. A driving component 694 is fixedly installed inside the first filter plate 61. The output shaft of the driving component 694 is fixedly connected to the long cylinder 693. Both ends of the long cylinder 693 are provided with air vents 697. The long cylinder 693 is divided into a first slot and a second slot along the circumferential direction. The first slot and the second slot are respectively filled with different types of solid adsorption fillers. A filter screen 696 is provided between the first slot and the second slot to block and limit the movement.

[0029] In this process, after the upward-flowing flue gas comes into contact with the long cylinder 693, the flue gas enters the internal cavity of the long cylinder 693 through the vents 697 at the upper and lower ends. The flue gas flows through the vents 697 and through different packing layers, which can simultaneously achieve physical interception of dust and adsorption and graded removal of gaseous harmful components. At the same time, the long cylinder 693 is rotated by the drive component 694, which can switch the windward angle and adsorption channel of different packing areas as needed. The rotation of the long cylinder 693 switches the slots of different solid adsorption packings, so that after the adsorption packing on the windward side is saturated, it can be rotated and replaced with the unsaturated packing on the leeward side, restoring the airflow adsorption flux without stopping the machine and disassembling the filter plate.

[0030] In some embodiments, sealing gaskets 691 are fixedly installed on the sides of the first filter plate 61 and the second filter plate 63 that are close to each other, and multiple multi-point grooves 692 are opened on the surfaces of the first filter plate 61 and the second filter plate 63 that are close to each other. The collection cylinder 5 is connected to the input end of the first pump body 62 through the suction pipe 64.

[0031] After the first filter plate 61 and the second filter plate 63 are installed inside the collection cylinder 5, the assembly gap between the two filter plates is filled and sealed by the sealing gasket 691. When the flue gas flows in the cavity between the two filter plates, the flue gas cannot escape by flowing around the gap between the side of the filter plate and the cylinder wall. When the flue gas flows to the surface of the opposite side of the two filter plates, the flue gas enters the interior of the multiple multi-point grooves 692 opened on the surface of the filter plate. The flue gas stays in the grooves for a short time, the flue gas flow speed slows down, and the airflow distribution is optimized.

[0032] In some embodiments, a rinsing assembly 7 is provided between the first filter plate 61 and the second filter plate 63. The rinsing assembly 7 includes multiple sets of annular jet plates 74 fixedly installed between the first filter plate 61 and the second filter plate 63. The top and bottom ends of the annular jet plates 74 are connected to multiple nozzles for rinsing the surfaces of the first filter plate 61 and the second filter plate 63. A second pump body 72 is fixedly installed on the outer surface of the collection cylinder 5. The output end of the second pump body 72 is connected to the multiple sets of annular jet plates 74 through an air outlet pipe 71.

[0033] The second pump 72 starts operating and outputs high-pressure gas. The high-pressure gas is transported through the outlet pipe 71 to the interior of multiple sets of annular jet plates 74 installed between the first filter plate 61 and the second filter plate 63. After the high-pressure gas enters the annular cavity of the annular jet plate 74, the gas is diverted into each nozzle of the annular jet plate 74. The high-speed airflow impacts the filter plate surface, blowing off and peeling off the dust particles attached to the surfaces of the two filter plates. The dust falls into the lower space of the collection cylinder 5, completing the jet washing of the two filter plate surfaces. By setting a bidirectional jet washing structure, the upper and lower filter plates can be cleaned at the same time, and the cleaning coverage is wide. By relying on the high-pressure airflow to peel off the dust on the surface of the filter plate, the clogging speed of the filter plate is slowed down, the filter plate filtration resistance rise is reduced, and the continuous filtration time of the filter plate is extended.

[0034] In some embodiments, the output end of the second pump body 72 is connected to the cavity between the first filter plate 61 and the second filter plate 63 through an air inlet pipe, for gas circulation in the cavity between the first filter plate 61 and the second filter plate 63, and the output end of the second pump body 72 is also connected to a filter box 73 for filtering the gas after rinsing.

[0035] The second pump 72 operates continuously. After the high-pressure gas enters the cavity, it drives the dust-laden gas inside the cavity to flow continuously. The mixed gas carrying the dust blown off in the cavity is transported to the filter box 73 through the pipeline. The dust-laden gas enters the filter box 73, and the filter box 73 intercepts and filters the dust particles carried in the airflow. The dust is trapped inside the filter box 73. After purification, the gas flows out of the filter box 73 and flows back into the collection cylinder 5 to complete the circulation filtration of the gas after rinsing, preventing the dust generated by the dust cleaning and blowing from re-adhering back to the surface of the filter plate.

[0036] In some embodiments, a spiral impeller 22 is rotatably mounted inside the air inlet pipe 21, a motor 23 is fixedly mounted on the top of the base 3, and a belt 24 is installed between the output shaft of the motor 23 and the spiral impeller 22 for transmission.

[0037] The motor 23 is started, and its output shaft drives the spiral impeller 22 inside the air inlet pipe 21 to rotate synchronously via the belt 24. The spiral impeller 22 rotates continuously inside the air inlet pipe 21, and the rotating blades continuously push the flue gas inside the air inlet pipe 21 forward. The flue gas is transported along the air inlet pipe 21 towards the collection cylinder 5. The axial thrust generated by the rotation of the spiral impeller 22, together with the negative pressure suction formed by the first pump body 62 inside the collection cylinder 5, continuously guides the external flue gas into the cavity of the collection cylinder 5, enhancing the flue gas introduction capacity and reducing the air intake resistance of the air inlet pipe 21. Even when the flue gas dust concentration is high and the pipe resistance increases, a stable air intake volume can still be ensured, avoiding insufficient air intake that would cause a decrease in purification efficiency.

[0038] In some embodiments, a guide mechanism 4 is provided on the air inlet duct 21. The guide mechanism 4 includes a protective plate 44 connected to and installed on the air inlet duct 21. A protective net 42 for reducing the impact of flue gas impurities on the internal components of the collection cylinder 5 is fixedly installed on the inner surface of the protective plate 44 away from the collection cylinder 5. A plurality of inclined guide vanes 41 are fixedly installed on the inner wall of the protective plate 44 near the protective net 42. A plurality of wave-shaped baffle frames 43 are staggered on the inner surface of the protective plate 44 near the collection cylinder 5.

[0039] In this process, the flue gas is conveyed forward along the inlet duct 21. The flue gas first reaches the guide mechanism 4 and passes through the protective net 42 installed inside the protective plate 44. Larger solid debris in the flue gas is intercepted by the protective net 42, thus blocking large hard impurities and preventing them from impacting the downstream filter plate components. After passing through the protective net 42, the flue gas continues to flow forward and hits multiple inclined guide vanes 41 arranged on the inner wall of the protective plate 44. The direction of the flue gas is deflected, and the high-speed flue gas jet is dispersed. Large dust particles in the flue gas are slowed down and settled under inertia. The flue gas continues to move forward and comes into contact with the wave-shaped baffle frame 43. The flue gas flows back and forth along the bend of the wave-shaped baffle frame 43, and the turbulent high-speed airflow is gradually slowed down and rectified. This reduces the pressure loss caused by the airflow eddies and makes the flue gas airflow distribution inside the collection cylinder 5 more uniform.

[0040] In some embodiments, the top of the base 3 is provided with a sedimentation tank 8 for settling large particulate impurities entering through the air inlet pipe 21, and the top of the sedimentation tank 8 is connected to the bottom of the collection cylinder 5, and a slag discharge pipe is provided on one side of the sedimentation tank 8.

[0041] As the flue gas is transported into the cavity of the collection cylinder 5 along the air inlet pipe 21, the flow cross section increases when the flue gas enters the space above the sedimentation tank 8, and the flue gas flow velocity decreases rapidly. Larger dust impurities in the flue gas lose the airflow support and fall downward under the action of gravity, settling and accumulating at the bottom of the inner cavity of the sedimentation tank 8. Large dust particles are separated by gravity in advance, which greatly reduces the dust treatment load of the first filter plate 61 and the second filter plate 63 behind, delays the filter plate clogging cycle, and finally discharges through the slag discharge pipe connected to one side of the sedimentation tank 8.

[0042] Working principle: After the equipment is started, external dust-laden flue gas is sent into the cavity of the collection cylinder 5 through the inlet pipe 21. The flue gas first flows downward to the lower section of the collection cylinder 5, and then flows upward, passing through the first filter plate 61 and the second filter plate 63 installed inside the collection cylinder 5 in sequence. The dust particles carried in the flue gas are intercepted and blocked on the windward side of the first filter plate 61 and the second filter plate 63. The first pump body 62 above the base 3 starts to operate. After the first pump body 62 starts operating, it generates negative pressure suction inside the suction pipe 64. The suction pipe 64 draws the air from the outlet side of the first filter plate 61 and the second filter plate 63 through the initial suction. The flue gas after dust removal is extracted; the extracted flue gas is transported through the exhaust pipe 66 to the purification box 672 inside the collection cylinder 5. Multiple heating components 673 inside the purification box 672 are turned on simultaneously to continuously heat the flue gas entering the purification box 672 at high temperature. The volatile harmful pollutants inside the flue gas decompose under high temperature. After the flue gas has been purified at high temperature, it is transported back to the inner cavity of the collection cylinder 5 through the air guide pipe 675 at the top of the purification box 672. Finally, the completely purified flue gas continues to rise and is discharged outward from the exhaust pipe 68 at the top of the collection cylinder 5.

[0043] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A flue gas purification device with dust particle capture function, comprising a mounting frame (1), characterized in that: A collection tube (5) is fixedly installed in the middle of the mounting bracket (1). An air inlet mechanism (2) is provided on the outside of the collection tube (5). The air inlet mechanism (2) includes an air inlet pipe (21) connected to the outside of the collection tube (5). A purification mechanism (6) is provided inside the collection tube (5). The purification mechanism (6) includes a first filter plate (61) and a second filter plate (63) fixedly installed inside the collection tube (5). A base (3) is fixedly installed at the bottom of the collection tube (5). A first pump body (62) is fixedly installed at the top of the base (3). The input end of the first pump body (62) is connected to the first pump body (63) through a suction pipe (64). The filter plate (61) and the second filter plate (63) are connected. The inside of the collection cylinder (5) is provided with a high-heat component (67). The high-heat component (67) includes a purification box (672) fixedly installed inside the collection cylinder (5). The output end of the first pump body (62) is connected to the inside of the purification box (672) through an air outlet pipe (66). Multiple heating components (673) are fixedly installed inside the purification box (672). The top of the purification box (672) is provided with an air guide pipe (675) connected to the inside of the collection cylinder (5). The top of the collection cylinder (5) is provided with an exhaust pipe (68) for discharging the purified flue gas.

2. The flue gas purification device with dust particle capture function according to claim 1, characterized in that: The outer wall of the purification box (672) is provided with a heat insulation cavity (671) to isolate the heat flow inside the purification box (672). A heat recovery pipe (674) is installed inside the purification box (672), and a heat recovery device is connected to the free end of the heat recovery pipe (674).

3. The flue gas purification device with dust particle capture function according to claim 1, characterized in that: The top of the collection tube (5) is provided with an annular tube (65). The outer surface of the annular tube (65) has multiple air inlet heads arranged in an equidistant circular array to purify the airflow inside the collection tube (5) in a secondary circulation. One end of the annular tube (65) is connected to the suction pipe (64).

4. The flue gas purification device with dust particle capture function according to claim 1, characterized in that: The first filter plate (61) and the second filter plate (63) are both provided with an adsorption component (69). The adsorption component (69) includes an arc-shaped plate (695) fixedly installed inside the first filter plate (61). A long cylinder (693) is rotatably installed on the surface of the arc-shaped plate (695). A driving component (694) is fixedly installed inside the first filter plate (61). The output shaft of the driving component (694) is fixedly connected to the long cylinder (693). Both ends of the long cylinder (693) are provided with air vents (697). The long cylinder (693) is divided into a first slot and a second slot along the circumferential direction. The first slot and the second slot are respectively filled with different kinds of solid adsorption fillers. A filter screen (696) is provided between the first slot and the second slot to block and limit the movement.

5. A flue gas purification device with dust particle capture function according to claim 1, characterized in that: Sealing gaskets (691) are fixedly installed on the sides of the first filter plate (61) and the second filter plate (63) that are close to each other. Multiple multi-point grooves (692) are opened on the surfaces of the first filter plate (61) and the second filter plate (63) that are close to each other. The collection cylinder (5) is connected to the input end of the first pump body (62) through the suction pipe (64).

6. The flue gas purification device with dust particle capture function according to claim 1, characterized in that: A rinsing assembly (7) is provided between the first filter plate (61) and the second filter plate (63). The rinsing assembly (7) includes multiple sets of annular jet plates (74) fixedly installed between the first filter plate (61) and the second filter plate (63). Multiple nozzles are connected to the top and bottom of the annular jet plates (74) for rinsing the surfaces of the first filter plate (61) and the second filter plate (63). A second pump body (72) is fixedly installed on the outer surface of the collection cylinder (5). The output end of the second pump body (72) is connected to the multiple sets of annular jet plates (74) through the air outlet pipe (71).

7. A flue gas purification device with dust particle capture function according to claim 6, characterized in that: The output end of the second pump body (72) is connected to the cavity between the first filter plate (61) and the second filter plate (63) through the air inlet pipe, which is used to circulate gas in the cavity between the first filter plate (61) and the second filter plate (63). The output end of the second pump body (72) is also connected to a filter box (73) for filtering the gas after rinsing.

8. A flue gas purification device with dust particle capture function according to claim 1, characterized in that: The air inlet pipe (21) is rotatably mounted with a spiral impeller (22), and the top of the base (3) is fixedly mounted with a motor (23). A belt (24) is installed between the output shaft of the motor (23) and the spiral impeller (22).

9. A flue gas purification device with dust particle capture function according to claim 1, characterized in that: The air inlet pipe (21) is provided with a guide mechanism (4), which includes a protective plate (44) connected to the air inlet pipe (21). The inner surface of the protective plate (44) away from the collection cylinder (5) is fixedly installed with a protective net (42) to reduce the impact of flue gas impurities on the inside of the collection cylinder (5). The inner wall of the protective plate (44) near the protective net (42) is fixedly installed with multiple inclined guide vanes (41). The inner surface of the protective plate (44) near the collection cylinder (5) is provided with multiple wave-shaped baffle frames (43).

10. A flue gas purification device with dust particle capture function according to claim 1, characterized in that: The top of the base (3) is provided with a sedimentation tank (8) for settling large particulate impurities entering through the air inlet pipe (21), and the top of the sedimentation tank (8) is connected to the bottom of the collection cylinder (5). A slag discharge pipe is provided on one side of the sedimentation tank (8).

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