Incinerator flue gas purification equipment

Abstract

This invention discloses a flue gas purification device for an incinerator, including a bag filter body. A dust hopper with an externally mounted flue gas inlet pipe is installed below the bag filter body, and an L-shaped guide plate is installed inside the dust hopper on one side of the flue gas inlet pipe. The device also includes a dust interception mechanism and a cleaning mechanism. A dust interception mechanism is installed between the dust hopper and the flue gas inlet pipe. This mechanism uses an electric actuator to drive a pull rod, which in turn moves a V-shaped drop plate back and forth, actively intercepting most of the large particles in the flue gas and feeding them into the dust hopper through an inclined pipe. This significantly reduces the initial load on the filter bags and decreases the frequency of pulse cleaning. Simultaneously, a dust interception mechanism is added at the dust hopper. The V-shaped lower plate and V-shaped connecting plate within the frame of the dust interception mechanism form a regular airflow channel. A guide groove guides the flue gas to fully contact the activated carbon strips, adsorbing harmful gases and intercepting fine particles, achieving secondary pretreatment, improving flue gas purification, utilizing the dust hopper space, and effectively reducing the pressure on the subsequent filter bags and activated carbon adsorption box.

Description

Technical Field

[0001] This invention relates to the field of flue gas purification technology for incinerators, and particularly to a flue gas purification device for incinerators. Background Technology

[0002] An incinerator is an environmentally friendly device that uses high-temperature combustion to reduce or minimize the amount of waste gas, waste liquid, solid waste, fuel, medical waste, household waste, animal carcasses, etc. It also utilizes some of the thermal energy from the combustion medium. Incinerators are commonly used for the harmless treatment of medical and household waste and animal carcasses. Their principle is to use the combustion of fuels such as coal, oil, or gas to carbonize the waste at high temperatures, achieving sterilization. The flue gas produced by the incinerator needs to be purified before emission because it contains a large amount of particulate matter. Sulfides and nitrogen oxides, when directly emitted, can pollute the environment. Currently, the mainstream approach both domestically and internationally is a three-stage process: "pretreatment → core purification → deep treatment." The process logic is as follows: first, large particles are removed to prevent blockage of subsequent equipment; then, acidic gases and heavy metals are specifically treated; and finally, dioxins are deeply degraded, fine particles are removed, and denitrification is achieved. The specific process is as follows: incinerator furnace → waste heat boiler (recovering heat and cooling to 300-400℃) → pretreatment (quench tower / semi-dry tower) → dust removal equipment (mainly bag filters) → deep purification (denitrification, activated carbon adsorption) → induced draft fan → chimney emission. In existing technologies, after the flue gas from incinerators is cooled by a quench tower, it is sent to a bag filter for dust removal, then purified by an activated carbon adsorption box before being discharged through a chimney. When the flue gas enters the bag filter for dust removal and purification, an L-shaped guide plate directs the gas into the lower ash hopper. Large particles in the flue gas fall into the ash hopper under their own weight. However, the lower ash hopper of this type of bag filter has low resistance to large particles, resulting in a significant amount of particles adhering to the filter bags and requiring frequent pulse cleaning. Furthermore, the purification area of ​​this type of bag filter largely relies on the upper filter bags, while the lower ash hopper lacks an effective pretreatment structure, leading to low utilization of its capacity for incinerator flue gas filtration and purification. Therefore, we propose an incinerator flue gas purification device. Summary of the Invention

[0003] The main objective of this invention is to provide a flue gas purification device for incinerators. This invention adds a dust interception mechanism between the ash hopper and the inlet pipe below the baghouse dust collector. The electric actuator of the dust interception mechanism drives a pull rod to move a V-shaped drop plate back and forth periodically to contact the flue gas, thereby actively controlling the flue gas flow path. The V-shaped grooves of the drop plate intercept most of the large particles in the flue gas and guide them into the ash hopper for collection through an inclined pipe. This significantly reduces the initial filtration load on the filter bags, effectively reduces the frequency of filter bag pulse cleaning, extends the service life of the filter bags, and reduces energy waste and filter bag wear caused by frequent cleaning. Furthermore, this invention sets up a pre-treatment mechanism at the ash hopper below the baghouse dust collector, fully utilizing the pre-treatment potential of the ash hopper. The support frame of the pre-treatment mechanism has a V-shaped lower clamping plate and a V-shaped connecting plate forming a regular airflow channel. The grooves on the surface of the V-shaped receiving plate guide the flue gas to fully contact the built-in activated carbon strips. This not only adsorbs harmful gases in the flue gas but also traps fine particles, achieving a two-stage pretreatment of large particle dust interception and small particle and harmful gas adsorption. This design not only improves the purification level of the flue gas before it enters the filter bag but also efficiently utilizes the ash hopper space, reducing the purification pressure on the subsequent filter bag and activated carbon adsorption box. Furthermore, the activated carbon strips in the dust interception mechanism of this invention are replaced by V-shaped fasteners and a pull-out column assembly, facilitating modular installation. The module can be removed for replacement after disassembling the baffle at the ash hopper, making operation convenient. The T-shaped receiving plate above the pull-out rod of the dust interception mechanism is bolted to the electric push rod. The sealing disc tube, combined with a sealing ring, ensures a tight seal while also facilitating disassembly and cleaning, effectively solving the problems in the background art. To achieve the above objectives, the technical solution adopted by the present invention is as follows: A flue gas purification device for an incinerator includes a bag filter body. A hopper with an outer side-mounted long inlet pipe is installed below the bag filter body. An L-shaped guide plate is installed inside the hopper on one side of the long inlet pipe. The device also includes a dust interception mechanism and a cleaning mechanism. A dust interception mechanism for intercepting flue gas particles is installed between the long inlet pipe and the hopper. A dust interception mechanism for purifying flue gas particles is installed inside the hopper above the L-shaped guide plate. The dust interception mechanism includes a support frame, a V-shaped lower plate, and activated carbon strips. The L-shaped guide plate has a baffle and guide fins. A support frame is installed inside the ash hopper above the L-shaped guide plate, and V-shaped lower buckles are arranged and welded inside the support frame. A V-shaped connecting plate is fixed below the V-shaped lower buckle, and a guide groove is opened on the surface of the V-shaped connecting plate. An activated carbon strip with an outer V-shaped buckle seat is inserted between the V-shaped connecting plate and the V-shaped lower buckle. Frame connecting blocks and wall blocks that are bonded to each other are inserted at the support frame and the ash hopper. A baffle installed on the outside of the ash hopper is welded to the outside of the wall block. Guide fins are welded to the inner corner surface of the L-shaped guide plate.

[0004] Furthermore, the dust interception mechanism includes an inclined pipe, an inclined inlet pipe, a sealing disc tube, a pull rod, a T-shaped connector, an electric actuator, and a gantry base. An inclined pipe is welded between the lower part of the long inlet pipe and the ash hopper, and an inclined inlet pipe is welded to the upper part of the long inlet pipe away from the inclined pipe. A sealing disc tube is installed at the outer opening of the inclined inlet pipe. A pull rod is inserted between the sealing disc tube, the inclined inlet pipe, the long inlet pipe, and the inclined pipe. A T-shaped connector is installed at the point where the pull rod extends out of the sealing disc tube. A V-shaped drop plate is fixed to the outside of the pull rod inside the inclined inlet pipe, the long inlet pipe, and the inclined pipe. The T-shaped connector has a disc head... The telescopic rod head is equipped with an electric actuator, and the base of the electric actuator is installed at the gantry seat. By adopting the above-mentioned preferred technical solution, the electric actuator drives the pull rod to move between the sealing disc tube, the inclined inlet pipe, the long inlet pipe, and the inclined pipe. The position of the V-shaped drop plate can be adjusted back and forth at regular intervals, thereby controlling the flow path of the flue gas inside the long inlet pipe and the settling effect of the particles. This adjustable structure can be optimized according to the actual flue gas conditions, thereby facilitating the pretreatment of the flue gas before it enters the bag filter body for dust settling. At the same time, after the V-shaped drop plate intercepts the large particles carried by the flue gas, they can fall into the ash hopper for collection along the inclined pipe.

[0005] Furthermore, a rubber frame is placed on the inner step surface of the ash hopper below the support frame, and a support frame is pressed on the upper frame surface of the rubber frame. By adopting the above-mentioned preferred technical solution, the rubber frame inside the ash hopper can flexibly support the support frame, reducing frictional wear between the ash hopper and the support frame.

[0006] Furthermore, a frame interface is provided on one side of the support frame, and a wall interface is provided on the ash hopper outside the frame interface. A frame connecting block and a wall block are respectively installed in the frame interface and the wall interface, and the frame connecting block abuts against the side opening of the V-shaped lower buckle plate and the V-shaped connecting plate. By adopting the above-mentioned preferred technical solution, the activated carbon strip and the V-shaped buckle can be installed by inserting them between the V-shaped lower buckle plate and the V-shaped connecting plate from the wall interface and the frame interface. Then, the baffle can be locked to the outside of the ash hopper with bolts, so that the wall block and the frame connecting block are respectively locked and sealed in the wall interface and the frame interface.

[0007] Furthermore, a diamond-shaped strip of activated carbon is inserted into the V-shaped groove of the V-shaped connecting plate, and the activated carbon strip is stuck into the V-shaped seat groove of the V-shaped buckle. The V-shaped buckle rests against the V-shaped lower buckle plate, and a pull post protrudes from one end of the V-shaped buckle plate. The pull post is inserted into the post hole opened on the surface of the frame connecting block and the wall block. By adopting the above-mentioned preferred technical solution, the activated carbon strip can be inserted into the V-shaped groove of the V-shaped buckle and fixed, making it convenient to hold the pull column and insert the V-shaped buckle and activated carbon strip between the V-shaped lower buckle plate and the V-shaped connecting plate for installation. Furthermore, the pull column can be inserted into the column hole of the frame connecting block and the wall block for concealment.

[0008] Furthermore, the V-shaped connecting plate has symmetrically provided guide grooves on its double inclined plate surface, and six sets of guide grooves are arranged on the double inclined plate surface of the V-shaped connecting plate. By adopting the above-mentioned preferred technical solution, the surface of the V-shaped contact plate with more guide grooves can guide the flue gas to contact the activated carbon strip for the adsorption of harmful gases and fine particles, effectively improving the purification level of the flue gas.

[0009] Furthermore, the V-shaped drop plate is fixed in a ring around the outside of the rod body to form a drop plate assembly, and the drop plate assembly is arranged along the length direction of the rod. By adopting the above-mentioned preferred technical solution, the drop plate assembly composed of V-shaped drop plates on the outside of the draw rod can press down the large particulate impurities in the flue gas and make them fall into the inclined pipe.

[0010] Furthermore, the rod extending from the sealing tube has an installation hole for screwing the bottom stud of the T-shaped connector, and the disc head of the T-shaped connector is locked to the telescopic rod head of the electric actuator by bolts. The bottom of the sealing tube is integrally formed with a sealing tube, and the disc body of the sealing tube is locked to the disc ring welded to the outside of the inclined tube by bolts. The sealing tube has a through hole for the rod to pass through, and the through hole has an inner ring groove for mounting the sealing ring, and the rod passes through the sealing ring. By adopting the above-mentioned preferred technical solution, the T-shaped connector can be screwed onto the pull rod for connection, and then the electric push rod can be installed on the T-shaped connector and driven, so that the pull rod can be inserted into the perforation of the sealing tube, and at the same time, the sealing tube can be sealed by a sealing ring contacting the pull rod.

[0011] Furthermore, an assembly plate is welded to one side of the gantry base, and the gantry base is bolted to the surface of the assembly plate with the electric push rod seat. The base plate of the gantry base has through holes. By adopting the above-mentioned preferred technical solution, an assembly plate is welded to one side of the gantry base, which can lock the electric actuator base with bolts. The base plate of the gantry base has through holes that allow expansion bolts to pass through and fix it to the ground. The design of the gantry base provides stable installation support for the electric actuator, ensuring the normal operation of the electric actuator, and also facilitating the overall installation and maintenance of the equipment.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention adds a dust interception mechanism between the ash hopper and the inlet pipe below the bag filter body. The electric push rod of the dust interception mechanism drives the pull rod to move the V-shaped drop plate back and forth in a timed manner to contact the flue gas, thereby actively controlling the flue gas flow path. The V-shaped groove of the drop plate intercepts most of the large particles in the flue gas and guides them into the ash hopper for collection through the inclined pipe. This significantly reduces the initial filtration load of the filter bag, effectively reduces the frequency of filter bag pulse cleaning, extends the service life of the filter bag, and reduces energy waste and filter bag wear caused by frequent dust cleaning. Furthermore, this invention features a dust collection and filtration mechanism located in the ash hopper below the main body of the bag filter, fully utilizing the pretreatment potential of the ash hopper. The support frame of the dust collection and filtration mechanism has a V-shaped lower plate and a V-shaped connecting plate forming a regular airflow channel. The guide groove on the surface of the V-shaped connecting plate can guide the flue gas to fully contact the built-in activated carbon strips. This not only adsorbs harmful gases in the flue gas but also traps fine particles, achieving a two-stage pretreatment of large particle dust trapping and small particle and harmful gas adsorption. This design not only improves the purification level of the flue gas before it enters the filter bag but also makes efficient use of the ash hopper space, reducing the purification pressure on the subsequent filter bag and activated carbon adsorption box. Meanwhile, the activated carbon strip in the dust removal mechanism of this invention is replaced by a V-shaped buckle and a column assembly, which facilitates modular installation. The module can be pulled out for replacement after the baffle at the ash hopper is removed, making the operation convenient. The T-shaped connecting plate above the dust removal rod of the dust removal mechanism is bolted to the electric push rod. The sealing tube and sealing ring ensure a seal while also facilitating disassembly and cleaning. This invention incorporates a pretreatment structure at the ash hopper below the bag filter body and at the long inlet pipe on its outer side. This structure effectively intercepts large particles in the flue gas before they enter the ash hopper. Simultaneously, the ash hopper further intercepts and adsorbs and purifies the flue gas particles and harmful substances, thus achieving efficient utilization of the ash hopper below the bag filter body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an incinerator flue gas purification device according to the present invention.

[0014] Figure 2 This is a schematic diagram showing the disassembled body and ash hopper of a bag filter for purifying flue gas from an incinerator according to the present invention.

[0015] Figure 3 This is a schematic diagram showing the removal of activated carbon strips in an incinerator flue gas purification device according to the present invention.

[0016] Figure 4 This is an exploded view of the interception and purification mechanism of an incinerator flue gas purification device according to the present invention.

[0017] Figure 5 This is a schematic diagram showing the ash hopper and L-shaped guide plate of an incinerator flue gas purification device according to the present invention.

[0018] Figure 6 This is an exploded view of the dust interception mechanism of an incinerator flue gas purification device according to the present invention.

[0019] Figure 7 This is a schematic diagram showing the disassembly of the pull rod and T-shaped connector of an incinerator flue gas purification device according to the present invention.

[0020] Figure 8 This is a schematic diagram of the V-shaped connecting plate structure of an incinerator flue gas purification device according to the present invention.

[0021] Figure 9 This is a schematic diagram showing the disassembled V-shaped fastener and activated carbon strip of an incinerator flue gas purification device according to the present invention.

[0022] Figure 10 This is a schematic diagram of the sealing disc tube structure of an incinerator flue gas purification device according to the present invention.

[0023] In the diagram: 1. Baghouse dust collector body; 2. Dust hopper; 3. Smoke inlet pipe; 4. L-shaped guide plate; 5. Dust collection mechanism; 6. Rubber frame; 7. Support frame; 8. V-shaped lower plate; 9. V-shaped connecting plate; 10. Guide groove; 11. Frame interface; 12. Wall interface; 13. V-shaped fastener; 14. Activated carbon strip; 15. Drawer column; 16. Baffle; 17. Wall block; 18. Frame connecting block; 19. Guide fins; 20. Dust collection mechanism; 21. Inclined pipe; 22. Inclined inlet pipe; 23. Sealing disc tube; 24. Drawer rod; 25. V-shaped drop plate; 26. T-shaped connecting plate; 27. Electric actuator rod; 28. Assembly plate; 29. ​​Gantry base; 30. Sealing ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-10 As shown, an incinerator flue gas purification device includes a bag filter body 1, an ash hopper 2 with an outer side of a long inlet pipe 3 installed below the bag filter body 1, and an L-shaped guide plate 4 installed in the ash hopper 2 on one side of the long inlet pipe 3. It also includes a dust interception mechanism 5 and a dust interception mechanism 20. A dust interception mechanism 20 for intercepting and compressing flue gas particles is provided between the pipe body of the long inlet pipe 3 and the ash hopper 2. A dust interception mechanism 5 for intercepting and purifying flue gas particles is installed in the ash hopper 2 above the L-shaped guide plate 4. The interception mechanism 5 includes a support frame 7, a V-shaped lower buckle plate 8, activated carbon strips 14, a baffle 16, and guide fins 19. The support frame 7 is installed inside the ash hopper 2 above the L-shaped guide plate 4, and the V-shaped lower buckle plates 8 are arranged and welded inside the support frame 7. A V-shaped connecting plate 9 is fixed below the V-shaped lower buckle plate 8, and a guide groove 10 is opened on the surface of the V-shaped connecting plate 9. Activated carbon strips 14 with V-shaped buckle seats 13 on the outside are inserted between the V-shaped connecting plate 9 and the V-shaped lower buckle plate 8. Frame connecting blocks 18 and wall blocks 17 are inserted and bonded to each other at the support frame 7 and the ash hopper 2, and a baffle 16 installed on the outside of the ash hopper 2 is welded to the outside of the wall block 17. Guide fins 19 are welded to the inner corner surface of the L-shaped guide plate 4.

[0026] The dust interception mechanism 20 includes an inclined pipe 21, an inclined inlet pipe 22, a sealing disc tube 23, a pull rod 24, a T-shaped connector 26, an electric actuator 27, and a gantry base 29. An inclined pipe 21 is welded between the lower part of the long smoke inlet pipe 3 and the ash hopper 2, and an inclined inlet pipe 22 is welded to the upper part of the long smoke inlet pipe 3 away from the inclined pipe 21. A sealing disc tube 23 is installed at the outer opening of the inclined inlet pipe 22. A pull rod 24 is inserted between the sealing disc tube 23, the inclined inlet pipe 22, the long smoke inlet pipe 3, and the inclined pipe 21. A T-shaped connector 26 is installed at the point where the pull rod 24 exits the sealing disc tube 23. A V-shaped drop plate 2 is fixed to the outside of the pull rod 24 inside the inclined inlet pipe 22, the long smoke inlet pipe 3, and the inclined pipe 21. 5. The head of the T-shaped receiving plate 26 is equipped with the telescopic rod head of the electric push rod 27, and the seat of the electric push rod 27 is installed at the gantry seat 29. By adopting the above-mentioned preferred technical solution, the electric push rod 27 drives the pull rod 24 to move between the sealing plate tube 23, the inclined inlet pipe 22, the smoke inlet long pipe 3 and the inclined pipe 21. The position of the V-shaped drop plate 25 can be adjusted back and forth at regular intervals, thereby controlling the flow path of the flue gas inside the smoke inlet long pipe 3 and the settling effect of the particles. This adjustable structure can be optimized according to the actual flue gas conditions, so as to facilitate the dust settling of the flue gas before it enters the bag filter body 1. At the same time, after the V-shaped drop plate 25 intercepts the large particles carried by the flue gas, they can fall into the ash hopper 2 along the inclined pipe 21 for collection.

[0027] Among them, a rubber frame 6 is placed on the inner step surface of the ash hopper 2 below the support frame 7, and the support frame 7 is pressed on the upper frame surface of the rubber frame 6. By adopting the above-mentioned preferred technical solution, the rubber frame 6 inside the ash hopper 2 can flexibly support the support frame 7, thereby reducing the frictional wear between the ash hopper 2 and the support frame 7.

[0028] Among them, a frame interface 11 is provided on one side of the frame wall of the support frame 7, and a wall interface 12 is provided on the ash hopper 2 outside the frame interface 11. A frame connecting block 18 and a wall block 17 are respectively installed in the frame interface 11 and the wall interface 12, and the frame connecting block 18 abuts against the side opening of the V-shaped lower buckle plate 8 and the V-shaped connecting plate 9. By adopting the above-mentioned preferred technical solution, the activated carbon strip 14 and the V-shaped buckle 13 can be installed by inserting them between the V-shaped lower buckle plate 8 and the V-shaped connecting plate 9 from the wall interface 12 and the frame interface 11. Then, the baffle 16 can be locked to the outside of the ash hopper 2 with bolts, so that the wall block 17 and the frame connecting block 18 are respectively installed and sealed in the wall interface 12 and the frame interface 11.

[0029] The V-shaped groove of the V-shaped connecting plate 9 is into which a diamond-shaped strip of activated carbon strip 14 is inserted, and the activated carbon strip 14 is stuck and bonded to the V-shaped seat groove of the V-shaped buckle 13. The V-shaped buckle 13 abuts against the V-shaped lower buckle plate 8, and a pull post 15 protrudes from one end of the plate seat of the V-shaped buckle 13. The pull post 15 is inserted into the post hole opened on the surface of the frame connecting block 18 and the wall block 17. By adopting the above-mentioned preferred technical solution, the activated carbon strip 14 can be inserted into the V-shaped seat groove of the V-shaped buckle 13 for bonding and fixing, making it convenient to hold the pull column 15 and insert the V-shaped buckle 13 and the activated carbon strip 14 between the V-shaped lower buckle plate 8 and the V-shaped connecting plate 9 for installation. Furthermore, the pull column 15 can be inserted into the column hole of the frame connecting block 18 and the wall block 17 for concealment.

[0030] The V-shaped connecting plate 9 has symmetrically provided guide grooves 10 on its double inclined plate surface, and six sets of guide grooves 10 are arranged on the double inclined plate surface of the V-shaped connecting plate 9. By adopting the above-mentioned preferred technical solution, the surface of the V-shaped contact plate 9 with more guide grooves 10 can guide the flue gas to contact the activated carbon strip 14 for the adsorption of harmful gases and fine particles, effectively improving the purification level of the flue gas.

[0031] The V-shaped drop plate 25 is fixed in a ring around the outside of the rod body of the pull rod 24 to form a drop plate assembly, and the drop plate assembly is arranged along the length direction of the pull rod 24. By adopting the above-mentioned preferred technical solution, the drop plate assembly composed of V-shaped drop plates 25 on the outside of the draw rod 24 can press down the large particulate impurities in the flue gas into the inclined pipe 21.

[0032] The rod 24 extending out of the sealing tube 23 has an installation hole for screwing the bottom stud of the T-shaped connector 26. The head of the T-shaped connector 26 is locked to the telescopic rod head of the electric actuator 27 by bolts. The bottom of the sealing tube 23 has an integrally formed sealing tube. The sealing tube 23 is locked to the outer ring of the inclined tube 22 by bolts. The sealing tube 23 has a through hole for the rod 24 to pass through. The through hole of the sealing tube 23 has an inner ring groove for mounting the sealing ring 30. The rod 24 passes through the sealing ring 30. By adopting the above-mentioned preferred technical solution, the T-shaped connector 26 can be screwed onto the pull rod 24 for connection, and then the electric push rod 27 can be installed on the T-shaped connector 26 and driven so that the pull rod 24 can be inserted into the perforation of the sealing tube 23, and at the same time, the sealing tube 23 can be sealed by the sealing ring 30 contacting the pull rod 24.

[0033] Among them, an assembly plate 28 is welded to one side of the base of the gantry seat 29, and the base of the electric push rod 27 is locked to the surface of the assembly plate 28 by bolts. The bottom plate of the gantry seat 29 has through holes. By adopting the above-mentioned preferred technical solution, an assembly plate 28 is welded to one side of the gantry seat 29, which can lock the seat of the electric push rod 27 with bolts. The base plate of the gantry seat 29 has through holes that allow expansion bolts to pass through and thus fix it to the ground. The design of the gantry seat 29 provides stable installation support for the electric push rod 27, ensuring the normal operation of the electric push rod 27, and also facilitating the overall installation and maintenance of the equipment.

[0034] It should be noted that the present invention is an incinerator flue gas purification device. By setting a cleaning mechanism 5 and a dust interception mechanism 20 at the ash hopper 2 and the matching flue gas inlet pipe 3 below the bag filter body 1 for incinerator flue gas purification, the support frame 7 of the cleaning mechanism 5 can press the rubber frame 6 into the ash hopper 2. Then the ash hopper 2 is assembled with the bag filter body 1. Next, the purification strip assembly formed by the V-shaped buckle 13 and the activated carbon strip 14 can be inserted between the V-shaped lower buckle plate 8 and the V-shaped connecting plate 9 from the wall interface 12 of the ash hopper 2 and the frame interface 11 of the support frame 7. Then the wall block 17 on the surface of the baffle 16 supports the frame connecting block 18 and inserts it into the frame interface 11 of the support frame 7 along the wall interface 12 to seal. The frame connecting block 18 can be made of heat-resistant and corrosion-resistant rubber block for sealing. Then the wall block 17 can be sealed at the wall interface 12 of the ash hopper 2. At this time, the baffle 16 can be locked to the outside of the ash hopper 2 with bolts. Subsequently, the head of the pull rod 24 of the dust interception mechanism 20 passes through the sealing disc tube 23 and its internal sealing ring 30 and is screwed onto the T-shaped connector 26. Then, the pull rod 24, carrying the V-shaped drop plate 25, passes through the inclined inlet pipe 22 and the smoke inlet long pipe 3 and enters the inclined pipe 21. Then, the sealing tube of the sealing disc tube 23 is inserted into the inclined inlet pipe 22. The disc ring of the sealing disc tube 23 and the inclined inlet pipe 22 is screwed into it with bolts for detachable installation. At this time, the telescopic rod head disc of the electric actuator 27 can be screwed onto the T-shaped connector 26 with bolts. The seat of the electric actuator 27 can be installed on the assembly plate 28 of the gantry seat 29 with bolts. The base plate of the gantry seat 29 has through holes that can be passed through to fix it to the ground. The design of the gantry seat 29 provides a stable installation support for the electric actuator 27. The electric actuator 27 can be connected to the power supply as needed under the guidance of the manufacturer's electrical technicians. At the same time, a structure to protect the electric actuator 27 from wind and rain can also be installed at the gantry seat 29. When the flange of the flue gas inlet pipe 3 is connected to the flange of the quench tower pipe used for flue gas purification in the incinerator, the flue gas from the incinerator, after being cooled by the quench tower, will be sent into the flue gas inlet pipe 3. At this time, the electric actuator 27 can extend and retract its extension rod, so that the pull rod 24, along with the V-shaped drop plate 25, moves between the sealing pipe 23, the inclined inlet pipe 22, the flue gas inlet pipe 3, and the inclined pipe 21. This allows for periodic reciprocating adjustment of the position of the V-shaped drop plate 25 between the inclined inlet pipe 22, the flue gas inlet pipe 3, and the inclined pipe 21, effectively controlling the flow path of the flue gas inside the flue gas inlet pipe 3 and the settling effect of particles. This adjustable V-shaped drop plate 25 structure can be optimized for position adjustment according to the actual flue gas conditions, thus facilitating the pretreatment process before entering the bag filter. The flue gas in front of the main body 1 of the dust collector is subjected to dust removal, ensuring that the flue gas can be pre-treated and intercepted after entering the long flue gas pipe 3. When the baffle rod 24 moves back and forth at the sealing disc tube 23, the sealing disc tube 23 has a sealing ring 30 for contact sealing between its disc body and the baffle rod 24 to prevent the flue gas from overflowing upwards. The V-shaped drop plate 25 intercepts the flue gas carrying large particulate impurities with the V-shaped plate groove. The large particulate impurities can fall into the ash hopper 2 under the action of gravity along the inclined pipe 21 and be collected, realizing the pretreatment of flue gas at the long flue gas pipe 3. The inclined pipe 21 and the inclined guide pipe 22 can form an inclined guide space outside the long flue gas pipe 3. The V-shaped drop plate 25 enters the long flue gas pipe 3 and moves back and forth at timed intervals, thereby effectively intercepting large particulate impurities in the flue gas. Subsequently, the flue gas enters the ash hopper 2 along the long inlet pipe 3. First, the flue gas enters between the guide fins 19 at the L-shaped guide plate 4. The guide fins 19 guide the flue gas into the ash hopper 2 below the support frame 7 through U-shaped channels. Inside the ash hopper 2, the flue gas rises through the V-shaped lower retaining plates 8 within the support frame 7 and can then enter the filter bags of the baghouse dust collector body 1 for filtration and purification. Harmful substances and particulate impurities in the flue gas are trapped on the outside of the filter bags. Clean gas can then rise into the upper space of the baghouse dust collector body 1 and be discharged. Next, the gas purified by the filter bags passes through the activated carbon adsorption box for further purification and is sent to the chimney for discharge. When the flue gas passes through the V-shaped receiving plate 9 below the V-shaped lower retaining plate 8, the V-shaped lower... The double-corner groove below the combined position of the buckle plate 8 and the V-shaped receiving plate 9 is conducive to guiding the flue gas to contact the V-shaped receiving plate 9. At this time, the surface of the V-shaped receiving plate 9 with more guide grooves 10 can guide the flue gas to contact the activated carbon strip 14 between the lower buckle plate 8 and the V-shaped receiving plate 9. The activated carbon strip 14, with its ultra-large specific surface area and rich pore structure, adsorbs harmful gases and fine particles, and specifically removes a variety of difficult-to-treat harmful substances in the flue gas, effectively improving the pre-treatment purification degree of the flue gas and realizing the effective utilization of the space of the ash hopper 2 below the bag dust collector body 1. During pulse cleaning, the dust in the filter bags inside the bag dust collector body 1 will fall down along the inclined plate surface of the V-shaped receiving plate 9 into the ash hopper 1 for collection. After the incinerator stops venting flue gas, remove the mounting bolts at the baffle 16 and remove the baffle 16, so that the frame connecting block 18 and the wall block 17 leave the wall interface 12 at the ash hopper 2 in sequence. At this time, you can hold the pull column 15 and pull out the V-shaped buckle 13 from the frame interface 11 and the wall interface 12. After the V-shaped buckle 13 with the activated carbon strip 14 is pulled outward, it can be disassembled and replaced. After the replacement is completed, reinstall the baffle 16 to seal it. The electric push rod 27 can be disassembled by removing the bolts from the assembly plate 28. Then, remove the connecting bolts between the telescopic rod head of the electric push rod 27 and the T-shaped connecting plate 26, so that the electric push rod 27 and the T-shaped connecting plate 26 can be separated. Then, remove the mounting bolts between the sealing tube 23 and the inclined inlet pipe 22, remove the sealing tube 23, and then pull out the pull rod 24 with the V-shaped drop plate 25 for cleaning.

[0035] It should be noted that the present invention is a flue gas purification device for incinerators. All components in the present invention are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A waste incinerator flue gas purification apparatus comprising a bag filter body (1), a dust hopper (2) provided with an outer side of the bag filter body (1) and a flue gas inlet long pipe (3), and an L-shaped flow guide plate (4) installed in the dust hopper (2) on one side of the flue gas inlet long pipe (3), characterized in that: It also includes a dust interception mechanism (5) and a dust interception mechanism (20). A dust interception mechanism (20) for intercepting and pressing flue gas particles is provided between the pipe body of the flue gas inlet pipe (3) and the ash hopper (2). A dust interception mechanism (5) for intercepting and purifying flue gas particles is installed in the ash hopper (2) above the L-shaped guide plate (4). The interception mechanism (5) includes a support frame (7), a V-shaped lower buckle plate (8), activated carbon strips (14), a baffle (16), and guide fins (19). The support frame (7) is installed in the ash hopper (2) above the L-shaped guide plate (4), and the V-shaped lower buckle plates (8) are arranged and welded inside the support frame (7). A V-shaped connecting plate (9) is fixed below the V-shaped lower buckle plate (8), and a guide groove (10) is opened on the surface of the V-shaped connecting plate (9). Activated carbon strips (14) with V-shaped buckle seats (13) on the outside are inserted between the V-shaped connecting plate (9) and the V-shaped lower buckle plate (8). Frame connecting blocks (18) and wall blocks (17) that are bonded to each other are inserted at the support frame (7) and the ash hopper (2), and a baffle (16) installed on the outside of the ash hopper (2) is welded to the outside of the wall block (17). Guide fins (19) are welded to the inner corner surface of the L-shaped guide plate (4).

2. An incinerator flue gas cleaning apparatus according to claim 1, characterised in that: The dust interception mechanism (20) includes an inclined pipe (21), an inclined inlet pipe (22), a sealing disc tube (23), a pull rod (24), a T-shaped connector (26), an electric push rod (27), and a gantry base (29). The inclined pipe (21) is welded between the bottom of the smoke inlet pipe (3) and the ash hopper (2), and the inclined inlet pipe (22) is welded to the top of the pipe body of the smoke inlet pipe (3) away from the inclined pipe (21). A sealing disc tube (23) is installed at the outer opening of the inclined inlet pipe (22). 3) A pull rod (24) is inserted between the inclined inlet pipe (22), the long smoke inlet pipe (3) and the inclined pipe (21), and a T-shaped receiving plate (26) is installed at the rod body of the pull rod (24) that passes through the sealing tube (23). A V-shaped drop plate (25) is fixed on the outside of the pull rod (24) in the inclined inlet pipe (22), the long smoke inlet pipe (3) and the inclined pipe (21). The telescopic rod head of the electric push rod (27) is installed at the head of the T-shaped receiving plate (26), and the seat of the electric push rod (27) is installed at the gantry seat (29).

3. An incinerator flue gas cleaning apparatus according to claim 2, characterised in that: A rubber frame (6) is placed on the inner surface of the ash hopper (2) below the support frame (7), and a support frame (7) is pressed on the upper frame surface of the rubber frame (6).

4. The incinerator flue gas purification device according to claim 3, characterized in that: A frame interface (11) is provided on one side of the frame wall of the support frame (7), and a wall interface (12) is provided on the ash hopper (2) outside the frame interface (11). A frame connecting block (18) and a wall block (17) are respectively installed in the frame interface (11) and the wall interface (12), and the frame connecting block (18) abuts against the side opening of the V-shaped lower buckle plate (8) and the V-shaped connecting plate (9).

5. The incinerator flue gas purification device according to claim 4, characterized in that: The diamond-shaped strip of activated carbon strip (14) is inserted into the V-shaped groove of the V-shaped connecting plate (9), and the activated carbon strip (14) is stuck into the V-shaped seat groove of the V-shaped buckle (13). The V-shaped buckle (13) rests against the V-shaped lower buckle plate (8), and a pull post (15) protrudes from one end of the plate seat of the V-shaped buckle (13). The pull post (15) is inserted into the column hole opened on the surface of the frame connecting block (18) and the wall block (17).

6. The incinerator flue gas purification device according to claim 5, characterized in that: The V-shaped connecting plate (9) has symmetrically provided guide grooves (10) on its double inclined plate surface, and the guide grooves (10) are arranged in six groups on the double inclined plate surface of the V-shaped connecting plate (9).

7. The incinerator flue gas purification device according to claim 6, characterized in that: The V-shaped drop plate (25) is fixed in a ring around the outside of the rod body of the pull rod (24) to form a drop plate assembly, and the drop plate assembly is arranged along the length direction of the pull rod (24).

8. The incinerator flue gas purification device according to claim 7, characterized in that: The rod (24) extending out of the sealing tube (23) has an installation hole for screwing the bottom stud of the T-shaped connector (26), and the disc head of the T-shaped connector (26) is locked with the telescopic rod head of the electric actuator (27) by bolts. The bottom of the sealing tube (23) has an integrally formed sealing tube, and the disc body of the sealing tube (23) is locked with the disc ring welded to the outside of the inclined tube (22) by bolts. The sealing tube (23) has a through hole for the rod (24) to pass through, and the through hole of the sealing tube (23) has an inner ring groove for mounting the sealing ring (30), and the rod (24) passes through the sealing ring (30).

9. The incinerator flue gas purification device according to claim 8, characterized in that: The gantry base (29) has an assembly plate (28) welded to one side of its body, and the surface of the assembly plate (28) is secured with the body of the electric push rod (27) by bolts. The base plate of the gantry base (29) has perforations.

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