A flue gas purification device for boiler

Abstract

The present invention discloses a boiler flue gas purification device in the technical field of boiler flue gas purification, comprising a purification box, a fixed box and a filter cartridge, wherein a filter assembly is arranged in the filter cartridge, an adsorption assembly is arranged between the outer wall of the fixed box and the inner wall of the purification box, a diverter trough, a diverter pipe and a fixed air pipe are arranged at the lower part of the fixed box, a rotating assembly is arranged at the bottom, and a rotatable spray assembly is arranged at the fixed air pipe. The present invention performs primary filtering and purification treatment on the flue gas through the filter assembly, and performs water mist spray treatment on the flue gas through the spray assembly; the flue gas is diverted through structures such as the diverter trough, the diverter pipe, and the fixed air pipe, and an annular water mist is formed at each fixed air pipe through the rotating spray assembly, which is in full contact with the flue gas; the water mist sprayed by the spray assembly faces downward and will not directly enter the fixed air pipe, thereby reducing the impact on the fixed air pipe and the diverter pipe and other structures, and the inner wall of the fixed air pipe can be cleaned through the lifting assembly and the movable baffle.

Description

Technical Field

[0001] The invention relates to the technical field of boiler flue gas purification, in particular to a boiler flue gas purification device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Boiler equipment will produce a large amount of flue gas when working, which needs to be purified before it can be discharged to avoid smoke and dust affecting the environment.

[0003] Boiler flue gas is mostly purified by filtering, spraying and adsorption. For example, a coal-fired boiler flue gas fine particle separation device with patent publication number CN219002431U mainly includes a purification tower, an air inlet pipe is provided at the lower part of the purification tower, a turntable and a plurality of air guide pipes are rotatably installed at one end of the air inlet pipe located inside the purification tower, a water collecting ring and a plurality of atomizing nozzles are provided in the middle part of the inner cavity of the purification tower, and a filter plate and an adsorption plate are provided at the upper part; the flue gas enters the purification tower through the air inlet pipe and the plurality of air guide pipes, and is sprayed and adsorbed by a plurality of atomizing nozzles, and cooperates with the filter plate and the adsorption plate to realize flue gas purification.

[0004] However, when the above device is working, the openings of multiple air ducts face upward, and the nozzles are located above the air ducts and face downward. During operation, water mist sprayed from the atomizing nozzles will directly enter the air ducts, causing water accumulation inside the air ducts, which in turn may cause smoke and dust to adhere to the air ducts and cause blockages, affecting the flue gas purification effect.

[0005] Based on this, the present invention designs a flue gas purification device for a boiler to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a flue gas purification device for a boiler to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A flue gas purification device for a boiler comprises a cylindrical purification box and a vertical air inlet pipe located at the center of the top of the purification box, a horizontal exhaust pipe is fixed to the upper part of the side wall of the purification box, and a vertical drain pipe is fixed to the middle of the bottom of the purification box, and a valve is provided in the drain pipe;

[0009] The top of the purification box is set to be open, and a cylindrical fixed box is provided at the center of the upper inner cavity of the purification box, an adsorption assembly is provided in the middle of the outer wall of the fixed box, and the outer side of the adsorption assembly contacts the inner wall of the purification box, and a fixed ring platform is provided on the outer side of the top of the fixed box, the fixed ring platform is fixed to the top of the purification box, and a circular cover plate is fixed at the center of the top of the fixed ring platform, the air inlet pipe is fixed at the center of the cover plate, and a vertical filter cartridge is fixed at the center of the bottom circle of the cover plate, and a filter assembly is provided at the bottom of the filter cartridge;

[0010] A diversion groove is provided in the middle of the lower inner cavity of the fixed box, the bottom end of the filter cartridge is located at the inner side wall of the top end of the diversion groove, and a plurality of diversion pipes are evenly fixed on the outer side of the diversion groove along the circumferential direction, and a vertical fixed air pipe is fixed on the outer end of the diversion pipe, and one side of the fixed air pipe is in contact with the inner side wall of the fixed box through a fixing rod;

[0011] The bottom of the fixed box is rotatably connected to a spray assembly corresponding to the position of each fixed air pipe, the bottom end of the fixed air pipe passes through and extends out of the corresponding spray assembly, the top ends of the multiple spray assemblies are commonly connected to a rotating assembly, and the bottom center of the filter assembly is correspondingly connected to the rotating assembly;

[0012] A movable baffle is arranged on the upper part of the inner cavity of the fixed trachea, a vertical movable shaft is fixed at the top center of the movable baffle, and the top ends of the plurality of movable shafts are commonly connected with a lifting assembly.

[0013] Preferably, the spray assembly comprises a vertical rotating cylinder rotatably connected to the bottom surface of the fixed box, the rotating cylinder is correspondingly connected to the rotating assembly, the fixed air pipe is in contact with the inner wall of the rotating cylinder, and the bottom end passes through and extends out of the rotating cylinder, and the lower part of the rotating cylinder is parallelly fixed with an annular upper baffle and a lower baffle, and a plurality of spray heads are evenly arranged at the bottom of the lower baffle;

[0014] A water retaining ring seat is provided between the upper baffle plate and the lower baffle plate, an annular water cavity is formed between the upper baffle plate, the lower baffle plate, the water retaining ring seat and the rotating cylinder, and a connecting pipe is fixed on the water retaining ring seat, a pump body is provided in the middle of the bottom of the fixed box, one end of a plurality of connecting pipes are connected to the pump body, and a vertical water inlet pipe is connected to the bottom of the pump body, the bottom end of the water inlet pipe is close to the bottom of the inner cavity of the purification box, and a filtering structure is provided on the lower section of the water inlet pipe.

[0015] Preferably, the rotating assembly includes a transmission gear ring fixed to the upper part of the outer side wall of the rotating cylinder, and the bottom of the inner cavity of the fixed box is rotatably connected to a vertical rotating shaft, a rotating gear plate is fixed on the rotating shaft, and multiple transmission gear rings are engaged with the rotating gear plate, and a first drive gear is engaged on the rotating gear plate, and the first drive gear is connected to a motor.

[0016] Preferably, the filter assembly includes a spring ring plate slidably connected to the inner wall of the filter cartridge, a filter screen is fixed to the bottom end of the spring ring plate, and the middle of the bottom of the filter screen is connected to the top of the rotating shaft through a vibration structure, a plurality of spring blocks are evenly fixed on the outer surface of the spring ring plate in a circumferential direction, a plurality of vertical spring grooves are correspondingly provided on the side wall of the filter cartridge, the spring blocks are slidably connected in the spring grooves, and end plates are fixed on the outer wall of the filter cartridge at a position above each spring block, and the end plates and spring blocks are connected by springs.

[0017] Preferably, the vibration structure includes a movable column fixed at the center of the filter screen, a cylindrical groove is provided at the lower part of the movable column, and two top blocks are symmetrically fixed to the top surface of the inner cavity of the cylindrical groove, the bottom end of the top block is set to be hemispherical, the top end of the rotating shaft extends into the cylindrical groove of the movable column, and a rotating plate is fixed thereto, a plurality of protrusions are evenly fixed on the top surface of the rotating plate along the circumferential direction, the top of the protrusion is set to be arc-shaped, and the bottom end of the top block is in corresponding contact with the top surface of the rotating plate and the top of the protrusion.

[0018] Preferably, the filtering structure comprises a fixed mesh cylinder fixed to the lower side section of the water inlet pipe, and a filter cloth is fixed to the outer side of the fixed mesh cylinder.

[0019] Preferably, the top and bottom ends of the water retaining ring seat are provided with an annular sealing groove, the sealing groove is connected with a sealing ring through a plurality of evenly arranged springs, and the outer end surface of the sealing ring contacts the bottom surface of the upper baffle plate or the top surface of the lower baffle plate at the corresponding position.

[0020] Preferably, the adsorption assembly includes an adsorption ring groove fixed in the middle of the outer side wall of the fixed box, the outer ring side wall of the adsorption ring groove contacts the inner side wall of the purification box, a plurality of air permeable grooves are evenly arranged at the bottom of the adsorption ring groove, and an air permeable net is fixed in the air permeable groove, the interior of the adsorption ring groove is filled with adsorbent, the top of the adsorption ring groove is set to an open shape, and a ring-shaped pressing net is installed on the top.

[0021] Preferably, the lifting assembly includes a lifting ring plate connected to the top of multiple movable shafts, multiple threaded barrels are evenly arranged in a circumferential direction on the lifting ring plate and rotatably connected, a vertical threaded rod is threaded in the threaded barrel, and the threaded rod is fixedly connected to a fixed box, a first gear ring is rotatably connected to the top of the lifting ring plate, a second gear ring is fixed at a corresponding position on the threaded barrel, multiple second gear rings are all meshed with the first gear ring, and a second drive gear is also meshed on the first gear ring, the second drive gear is rotatably connected to the lifting ring plate, and is connected to a motor.

[0022] Preferably, a telescopic slot is provided at the lower part of the movable shaft, and scraper plates are symmetrically provided on both sides of the outside of the telescopic slot, one end of the scraper plate contacts the inner wall of the fixed air pipe, and the other end is rotatably connected with a symmetrically inclined lower connecting rod and an upper connecting rod on the upper and lower sides, and one end of the lower connecting rod is rotatably connected to the bottom of the telescopic slot, and a telescopic block is connected in the telescopic slot through a spring, and the ends of the upper connecting rods on both sides are rotatably connected to the two ends of the telescopic block respectively, and a vertical sliding rod is fixed in the middle of the telescopic slot, and the sliding rod passes through the telescopic block and is slidably connected to the telescopic block;

[0023] The top of the movable shaft is rotatably connected to the lifting ring plate, and a transmission gear is fixed on the movable shaft. The bottom of the lifting ring plate is rotatably connected to the third gear ring. Multiple transmission gears are meshed with the third gear ring. The third gear ring is also meshed with a third drive gear, and the third drive gear is connected to a motor.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention performs primary filtration and purification treatment on the flue gas through the filter component, performs water mist spray treatment on the flue gas through the spray component, and performs adsorption and dehumidification treatment on the flue gas through the adsorption component, thereby forming a multi-stage purification treatment for the flue gas and improving the treatment effect;

[0026] 2. The present invention diverts the flue gas through structures such as diverter troughs, diverter pipes, and fixed air pipes, and forms annular water mist at each fixed air pipe through a rotating spray assembly, so that the flue gas discharged from the fixed air pipe can fully contact with the spray water mist, thereby improving the flue gas purification effect;

[0027] 3. The water mist sprayed by the spray assembly in the present invention is directed downward and will not directly enter the fixed air pipe, thereby reducing the impact on the fixed air pipe, the diversion pipe and other structures. In addition, the movable baffle can be moved downward by the lifting assembly to clean the inner wall of the fixed air pipe, thereby preventing the adhered dust from affecting the subsequent purification treatment work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the fixed box of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the fixed trachea of ​​the present invention;

[0032] Figure 4 for Figure 2 Schematic diagram of the structure at A in the middle;

[0033] Figure 5 for Figure 2 Schematic diagram of the structure at B in the middle;

[0034] Figure 6 for Figure 2 Schematic diagram of the structure at C in the middle;

[0035] Figure 7 for Figure 3 Schematic diagram of the structure at D in the middle;

[0036] Figure 8 It is a schematic diagram of the lower structure of the water inlet pipe of the present invention;

[0037] Fig. 9 It is a schematic diagram of the position of the first driving gear of the present invention;

[0038] Fig.10 It is a structural schematic diagram of the threaded barrel of the present invention;

[0039] Fig.11 It is a schematic structural diagram of the scraper plate of the present invention.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 100-purification box, 101-drain pipe, 102-exhaust pipe;

[0042] 200-fixed ring table, 201-fixed box, 202-adsorption ring groove, 203-air permeable net, 204-pressing net;

[0043] 300-cover plate, 301-inlet pipe, 302-filter cartridge, 303-spring ring plate, 304-filter screen, 305-spring slot, 306-spring block, 307-end plate, 308-movable column, 309-top block;

[0044] 400-diverter slot, 401-fixed air pipe, 402-diverter pipe, 403-fixed rod, 404-movable baffle, 405-movable shaft, 406-lifting ring plate, 407-third gear ring, 408-transmission gear, 409-telescopic slot;

[0045] 500-pump body, 501-water inlet pipe, 502-connecting pipe, 503-water retaining ring seat, 504-sealing groove, 505-sealing ring, 506-fixed net cylinder, 507-filter cloth;

[0046] 600-rotating shaft, 601-rotating gear plate, 602-rotating cylinder, 603-transmission gear ring, 604-lower baffle, 605-upper baffle, 606-spray head, 607-first driving gear, 608-rotating plate, 609-bump;

[0047] 700-first gear ring, 701-second gear ring, 702-threaded cylinder, 703-threaded rod, 704-second driving gear;

[0048] 800-scraper plate, 801-lower connecting rod, 802-upper connecting rod, 803-telescopic block. DETAILED DESCRIPTION

[0049] The following will be combined with the attached embodiment of the present invention Figure 1-11 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] For example, please refer to the attached Figure 1 , the present invention provides a technical solution:

[0051] A flue gas purification device for a boiler, comprising a cylindrical purification box 100 and a vertical air inlet pipe 301 located at the top center of the purification box 100, a horizontal exhaust pipe 102 is fixed to the upper part of the side wall of the purification box 100, and a vertical drain pipe 101 is fixed to the middle of the bottom of the purification box 100, and a valve is provided in the drain pipe 101;

[0052] The top of the purification box 100 is set to be open, and a cylindrical fixed box 201 is provided at the center of the upper part of the inner cavity of the purification box 100, an adsorption component is provided in the middle of the outer wall of the fixed box 201, and the outer side of the adsorption component is in contact with the inner wall of the purification box 100, and a fixed ring platform 200 is provided on the outer side of the top of the fixed box 201, and the fixed ring platform 200 is fixed to the top of the purification box 100, and a circular cover plate 300 is fixed at the center of the top of the fixed ring platform 200, and an air inlet pipe 301 is fixed at the center of the cover plate 300, and a vertical filter cartridge 302 is fixed at the center of the bottom circle of the cover plate 300, and a filter component is provided at the bottom of the filter cartridge 302;

[0053] like Figure 2As shown, a diverter slot 400 is provided in the middle of the lower inner cavity of the fixed box 201, the bottom end of the filter cartridge 302 is located at the inner side wall of the top end of the diverter slot 400, and a plurality of diverter pipes 402 are evenly fixed to the outer side of the diverter slot 400 along the circumferential direction, and a vertical fixed air pipe 401 is fixed to the outer end of the diverter pipe 402, and one side of the fixed air pipe 401 is in contact with the inner side wall of the fixed box 201 through a fixed rod 403;

[0054] like Figure 3 As shown, the bottom of the fixed box 201 is rotatably connected to a spray assembly corresponding to the position of each fixed air pipe 401, the bottom end of the fixed air pipe 401 passes through and extends out of the corresponding spray assembly, the top ends of the multiple spray assemblies are commonly connected to a rotating assembly, and the bottom center of the filter assembly is correspondingly connected to the rotating assembly;

[0055] A movable baffle 404 is provided at the upper part of the inner cavity of the fixed air pipe 401 , a vertical movable shaft 405 is fixed at the top center of the movable baffle 404 , and the top ends of the plurality of movable shafts 405 are commonly connected to a lifting assembly.

[0056] When purifying the boiler flue gas, the flue gas is transported to the inside of the filter cartridge 302 through the air inlet pipe 301 and filtered by the filter assembly. At the same time, the rotating assembly is started to drive the filter assembly to vibrate, accelerate the filtering, and improve the filtering effect.

[0057] The filtered smoke enters the diversion trough 400 and is diverted through multiple diversion pipes 402 and enters the corresponding fixed air pipe 401. The top of the fixed air pipe 401 is closed by a movable baffle 404, so that the smoke flows downward along the fixed air pipe 401 and is discharged from the fixed air pipe 401.

[0058] While the smoke is discharged from the fixed air pipe 401, the rotating component drives multiple spray components to rotate. Clean water or adsorbent and other liquids are stored in the lower part of the purification box 100. The spray components absorb the liquid in the purification box 100 and spray it out. Under the action of the rotating component, an annular water mist is formed around the fixed air pipe 401, so as to fully contact with the smoke discharged from the fixed air pipe 401, purify and adsorb, and further improve the smoke purification effect.

[0059] The flue gas that has completed the spray adsorption treatment flows upward along the inner wall of the purification box 100 and passes through the adsorption component, where it is subjected to adsorption and dehumidification treatments and then discharged through the exhaust pipe 102 to complete the flue gas purification.

[0060] The water mist sprayed by the spray assembly is directed downward and will not directly enter the fixed air pipe 401, thereby reducing the impact on the fixed air pipe 401, the diversion pipe 402 and other structures; when the inner wall of the fixed air pipe 401 is adhered to dust in the flue gas due to the high humidity inside the purification box 100, after the work is completed, the moving shaft 405 can be used to drive the corresponding moving baffle 404 to move downward, so that the inner wall of the fixed air pipe 401 can be cleaned through the moving baffle 404 to prevent the adhered dust from affecting the subsequent purification treatment work.

[0061] Among them, Figure 3 As shown, the spray assembly includes a vertical rotating cylinder 602 rotatably connected to the bottom surface of the fixed box 201, the rotating cylinder 602 is correspondingly connected to the rotating assembly, the fixed air pipe 401 contacts the inner wall of the rotating cylinder 602, and the bottom end passes through and extends out of the rotating cylinder 602, and the lower part of the rotating cylinder 602 is parallelly fixed with an annular upper baffle 605 and a lower baffle 604, and a plurality of spray heads 606 are evenly arranged at the bottom of the lower baffle 604;

[0062] A water retaining ring seat 503 is provided between the upper baffle plate 605 and the lower baffle plate 604, and an annular water cavity is formed between the upper baffle plate 605, the lower baffle plate 604, the water retaining ring seat 503 and the rotating cylinder 602, and a connecting pipe 502 is fixed on the water retaining ring seat 503, and a pump body 500 is provided in the middle of the bottom of the fixed box 201, one end of a plurality of connecting pipes 502 are connected to the pump body 500, and a vertical water inlet pipe 501 is connected to the bottom of the pump body 500, the bottom end of the water inlet pipe 501 is close to the bottom of the inner cavity of the purification box 100, and a filtering structure is provided on the lower side section of the water inlet pipe 501.

[0063] When the rotating assembly drives the multiple rotating cylinders 602 to rotate, the rotating cylinders 602 drive the upper baffle 605, the lower baffle 604 and the nozzle 606 to rotate. At the same time, through the action of the pump body 500, the water at the bottom of the purification box 100 enters the water inlet pipe 501 through the filtering structure, and then passes through the pump body 500 and is respectively transported to the multiple connecting pipes 502, and then enters the corresponding water retaining ring seat 503, and is sprayed out through the nozzle 606. Through the action of rotation, an annular water mist is formed on the outside of the fixed air pipe 401, so that the flue gas is fully in contact with the water, thereby improving the purification effect of the flue gas.

[0064] Among them, Figure 3 As shown, the rotating assembly includes a transmission gear ring 603 fixed to the upper part of the outer wall of the rotating cylinder 602, and the bottom of the inner cavity of the fixed box 201 is rotatably connected to a vertical rotating shaft 600, and a rotating toothed disc 601 is fixed on the rotating shaft 600, and multiple transmission gear rings 603 are meshed with the rotating toothed disc 601, as shown in FIG. Fig. 9As shown, a first driving gear 607 is meshed on the rotating toothed disc 601, and the first driving gear 607 is connected to a motor. The first driving gear 607 is driven by the motor to rotate, and then the rotating cylinder 602 is rotated through the transmission of the first driving gear 607, the rotating toothed disc 601 and multiple transmission gear rings 603, and the nozzle 606 on the rotating cylinder 602 is driven to rotate, forming an annular water mist on the outside of the fixed air pipe 401.

[0065] The filter assembly includes a spring ring plate 303 slidably connected to the inner wall of the filter cartridge 302, a filter screen 304 is fixed to the bottom end of the spring ring plate 303, and the bottom middle of the filter screen 304 is connected to the top of the rotating shaft 600 through a vibration structure, and a plurality of spring blocks 306 are evenly fixed on the outer surface of the spring ring plate 303 along the circumferential direction. Figure 5 As shown, a plurality of vertical spring grooves 305 are correspondingly provided on the side wall of the filter cartridge 302, and the spring blocks 306 are slidably connected in the spring grooves 305. An end plate 307 is fixed on the outer wall of the filter cartridge 302 at the upper position corresponding to each spring block 306, and the end plate 307 and the spring block 306 are connected by a spring.

[0066] After the flue gas enters the filter cartridge 302, it is filtered by the filter screen 304 to filter out larger dust particles in the flue gas. During the rotation of the rotating shaft 600, the filter screen 304 is vibrated up and down by the vibration structure to improve the filtering effect and reduce the clogging of the filter screen 304. At the same time, the spring ring plate 303 and the spring block 306 move up and down relative to the spring slot 305, and the reciprocating movement of the filter screen 304 is realized by the cooperation of the spring and the vibration structure.

[0067] Among them, Figure 6 As shown, the vibration structure includes a moving column 308 fixed at the center of the filter 304, a cylindrical groove is provided at the lower part of the moving column 308, and two top blocks 309 are symmetrically fixed on the top surface of the inner cavity of the cylindrical groove, and the bottom end of the top block 309 is set to be hemispherical, the top end of the rotating shaft 600 extends into the cylindrical groove of the moving column 308, and a rotating plate 608 is fixed thereto, and a plurality of protrusions 609 are evenly fixed on the top surface of the rotating plate 608 along the circumferential direction, the top of the protrusion 609 is set to be arc-shaped, and the bottom end of the top block 309 is in corresponding contact with the top surface of the rotating plate 608 and the top of the protrusion 609.

[0068] When the rotating gear disc 601 and the rotating shaft 600 rotate, the rotating plate 608 and the protrusion 609 thereon rotate accordingly in the circumferential direction, and during the rotation process, the bottom end of the top block 309 intermittently and sequentially contacts with multiple protrusions 609. Each time they contact, the protrusion 609 lifts the top block 309 and drives the movable column 308 and the filter screen 304 and other structures to move upward. When the bottom end of the top block 309 is misaligned with the position of the protrusion 609, the top block 309 moves downward under the action of structures such as springs, and the bottom end contacts with the top surface of the rotating plate 608, so that during the rotation of the rotating plate 608 and the protrusion 609, they cooperate with the top block 309 to realize the up and down vibration of the filter screen 304, improve the filtering effect, and reduce blockage and the like.

[0069] Among them, Figure 8 As shown, the filtering structure includes a fixed mesh cylinder 506 fixed to the lower side section of the water inlet pipe 501, and a filter cloth 507 is fixed to the outside of the fixed mesh cylinder 506. The position of the filter cloth 507 is supported and restricted by the fixed mesh cylinder 506, and the water entering the water inlet pipe 501 is filtered by the filter cloth 507 to avoid clogging of the water inlet pipe 501 or the pump body 500 and other structures.

[0070] Embodiment 2: The structure of this embodiment is basically the same as that of embodiment 1, except that Figure 2 As shown, the adsorption assembly includes an adsorption ring groove 202 fixed to the middle of the outer side wall of the fixed box 201, the outer ring side wall of the adsorption ring groove 202 contacts the inner side wall of the purification box 100, and the sealing of the contact position can be increased by setting a sealing ring, a plurality of air permeable grooves are evenly arranged at the bottom of the adsorption ring groove 202, and an air permeable net 203 is fixed in the air permeable groove, the interior of the adsorption ring groove 202 is filled with an adsorbent, the top of the adsorption ring groove 202 is set to an opening shape, and a ring-shaped pressing net 204 is installed on the top.

[0071] The flue gas after the spray adsorption treatment enters the adsorption ring groove 202 through the air permeable net 203, and is adsorbed and dried by the adsorbent. After passing through the adsorption ring groove 202 and the adsorbent, the flue gas is discharged from the exhaust pipe 102; when the adsorbent in the adsorption ring groove 202 needs to be replaced, the fixed ring table 200 is disassembled and moved upward to move the adsorption ring groove 202 out of the top of the purification box 100, and then the pressing net 204 is disassembled to replace the adsorbent, and then the pressing net 204 is installed back, and the fixed ring table 200 and others are installed back to the top of the purification box 100.

[0072] Embodiment 3: The structure of this embodiment is basically the same as that of embodiment 1, except that Figure 7As shown, the top and bottom ends of the water retaining ring seat 503 are provided with an annular sealing groove 504, and a sealing ring 505 is connected to the sealing groove 504 through a plurality of evenly arranged springs, and the outer end surface of the sealing ring 505 contacts the bottom surface of the upper baffle plate 605 or the top surface of the lower baffle plate 604 at the corresponding position, thereby improving the sealing between the upper baffle plate 605, the lower baffle plate 604 and the water retaining ring seat 503, and when the sealing ring 505 is worn, the position is automatically adjusted by the action of the spring, and it always keeps in contact with the upper baffle plate 605 and the lower baffle plate 604.

[0073] Embodiment 4: The structure of this embodiment is basically the same as that of embodiment 1, except that the lifting assembly includes a lifting ring plate 406 connected to the top of a plurality of movable shafts 405, and a plurality of threaded cylinders 702 are evenly arranged and rotatably connected on the lifting ring plate 406 along the circumferential direction, and a vertical threaded rod 703 is threadedly connected in the threaded cylinder 702, and the threaded rod 703 is fixedly connected to the fixed box 201, such as Figure 4 As shown, the top of the lifting ring plate 406 is rotatably connected to the first gear ring 700, as shown in FIG. Fig.10 As shown, a second gear ring 701 is fixed at a corresponding position on the threaded cylinder 702, and multiple second gear rings 701 are all engaged with the first gear ring 700, and a second driving gear 704 is also engaged with the first gear ring 700. The second driving gear 704 is rotatably connected to the lifting ring plate 406 and is connected to a motor.

[0074] When it is necessary to adjust the height position of structures such as the movable baffle 404 and the movable shaft 405, the multiple second gear rings 701 drive the threaded barrel 702 to rotate through the drive of the motor and the transmission of the first driving gear 607 and the first gear ring 700, and then the threaded barrel 702 drives the lifting ring plate 406 to move relative to the threaded rod 703, and the movable baffle 404 moves along the inside of the fixed air pipe 401 to clean the inner wall of the fixed air pipe 401; and after the cleaning is completed, the motor rotates in the opposite direction, and through transmission, the threaded barrel 702 drives the lifting ring plate 406 to move up along the threaded rod 703, so that the movable baffle 404 returns to its position, so as to continue the flue gas purification work.

[0075] Embodiment 5: The structure of this embodiment is basically the same as that of embodiment 4, except that Fig.11As shown, a telescopic slot 409 is provided at the lower part of the movable shaft 405, and scraper plates 800 are symmetrically provided on both sides of the outside of the telescopic slot 409, one end of the scraper plate 800 contacts the inner wall of the fixed air pipe 401, and the other end is rotatably connected with a symmetrically inclined lower connecting rod 801 and an upper connecting rod 802 on the upper and lower sides, and one end of the lower connecting rod 801 is rotatably connected to the bottom of the telescopic slot 409, and a telescopic block 803 is connected in the telescopic slot 409 through a spring, and the ends of the upper connecting rod 802 on both sides are rotatably connected to the two ends of the telescopic block 803, respectively, and a vertical sliding rod is fixed in the middle of the telescopic slot 409, and the sliding rod passes through the telescopic block 803 and is slidably connected to the telescopic block 803;

[0076] The top of the movable shaft 405 is rotatably connected to the lifting ring plate 406, and a transmission gear 408 is fixed on the movable shaft 405. The bottom of the lifting ring plate 406 is rotatably connected to the third gear ring 407. Multiple transmission gears 408 are all engaged with the third gear ring 407. The third gear ring 407 is also engaged with a third driving gear, and the third driving gear is connected to a motor.

[0077] When the movable shaft 405 drives the movable baffle 404 to move downward, the inner wall of the fixed air pipe 401 is initially scraped and cleaned by the movable baffle 404, and then the multiple movable shafts 405 drive the scraper plate 800 to rotate through the drive of the motor and the transmission of the third drive gear, the third gear ring 407 and the transmission gear 408. During the rotation and movement of the movable shaft 405, the inner wall of the fixed air pipe 401 is secondary cleaned by the scraper plate 800 to improve the cleaning effect. The scraper plate 800 is kept in contact with the inner wall of the fixed air pipe 401 through the action of the spring and the telescopic block 803 to ensure the cleaning effect.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flue gas purification device for a boiler, comprising a cylindrical purification box (100) and a vertical air inlet pipe (301) located at the top center of the purification box (100), a horizontal exhaust pipe (102) fixed to the upper part of the side wall of the purification box (100), and a vertical drain pipe (101) fixed to the middle of the bottom of the purification box (100), a valve being provided in the drain pipe (101), characterized in that: A cylindrical fixed box (201) is provided at the center of the upper part of the inner cavity of the purification box (100), an adsorption assembly is provided at the middle of the outer wall of the fixed box (201), a fixed ring platform (200) is provided on the outer side of the top of the fixed box (201), the fixed ring platform (200) is fixed to the top of the purification box (100), and a circular cover plate (300) is fixed at the center of the top of the fixed ring platform (200), a vertical filter cartridge (302) is fixed at the center of the bottom circle of the cover plate (300), and a filter assembly is provided at the bottom of the filter cartridge (302); A diversion groove (400) is provided in the middle of the lower part of the inner cavity of the fixed box (201); the bottom end of the filter cartridge (302) is located at the inner side wall of the top end of the diversion groove (400); and a plurality of diversion pipes (402) are evenly fixed along the circumferential direction on the outer side of the diversion groove (400); a vertical fixed air pipe (401) is fixed to the outer end of the diversion pipe (402); and one side of the fixed air pipe (401) is in contact with the inner side wall of the fixed box (201) via a fixed rod (403); The bottom of the fixed box (201) is rotatably connected to a spray assembly at a position corresponding to each fixed air pipe (401), the bottom end of the fixed air pipe (401) passes through and extends out of the corresponding spray assembly, the top ends of the plurality of spray assemblies are commonly connected to a rotating assembly, and the bottom center of the filter assembly is correspondingly connected to the rotating assembly; A movable baffle (404) is provided at the upper part of the inner cavity of the fixed air pipe (401), a vertical movable shaft (405) is fixed at the top center of the movable baffle (404), and the top ends of the plurality of movable shafts (405) are commonly connected to a lifting assembly.

2. The boiler flue gas purification device according to claim 1, characterized in that: The spray assembly comprises a vertical rotating cylinder (602) rotatably connected to the bottom surface of the fixed box (201), the rotating cylinder (602) and the rotating assembly are correspondingly connected, the fixed air pipe (401) contacts the inner wall of the rotating cylinder (602), and the bottom end passes through and extends out of the rotating cylinder (602), and an annular upper baffle (605) and a lower baffle (604) are fixed in parallel to the lower part of the rotating cylinder (602), and a plurality of spray heads (606) are evenly arranged at the bottom of the lower baffle (604); A water retaining ring seat (503) is provided between the upper baffle plate (605) and the lower baffle plate (604), and a connecting pipe (502) is fixed on the water retaining ring seat (503); a pump body (500) is provided in the middle of the bottom of the fixed box (201); one end of each of the plurality of connecting pipes (502) is connected to the pump body (500), and a vertical water inlet pipe (501) is connected to the bottom of the pump body (500); the bottom end of the water inlet pipe (501) is close to the bottom of the inner cavity of the purification box (100), and a filtering structure is provided on the lower side section of the water inlet pipe (501).

3. The boiler flue gas purification device according to claim 2, characterized in that: The rotating assembly comprises a transmission gear ring (603) fixed to the upper part of the outer wall of the rotating cylinder (602); a vertical rotating shaft (600) is rotatably connected to the bottom of the inner cavity of the fixed box (201); a rotating gear disc (601) is fixed on the rotating shaft (600); a plurality of transmission gear rings (603) are meshed with the rotating gear disc (601); a first driving gear (607) is meshed on the rotating gear disc (601); and the first driving gear (607) is connected to a motor.

4. The boiler flue gas purification device according to claim 3, characterized in that: The filter assembly comprises a spring ring plate (303) slidably connected to the inner wall of the filter cartridge (302); a filter screen (304) is fixed to the bottom end of the spring ring plate (303); and the middle of the bottom of the filter screen (304) is connected to the top of the rotating shaft (600) via a vibration structure; a plurality of spring blocks (306) are evenly fixed on the outer surface of the spring ring plate (303) along the circumferential direction; a plurality of vertical spring grooves (305) are correspondingly provided on the side wall of the filter cartridge (302); the spring blocks (306) are slidably connected in the spring grooves (305); an end plate (307) is fixed to the upper position of each spring block (306) on the outer wall of the filter cartridge (302); and the end plate (307) and the spring block (306) are connected via a spring.

5. The boiler flue gas purification device according to claim 4, characterized in that: The vibration structure comprises a movable column (308) fixed at the center of the filter screen (304), a cylindrical groove being provided at the bottom of the movable column (308), and two top blocks (309) being symmetrically fixed on the top surface of the inner cavity of the cylindrical groove, the bottom end of the top block (309) being designed to be hemispherical, the top end of the rotating shaft (600) extending into the cylindrical groove of the movable column (308), and being fixed with a rotating plate (608), a plurality of protrusions (609) being evenly fixed on the top surface of the rotating plate (608) along the circumferential direction, the top of the protrusion (609) being designed to be arc-shaped, and the bottom end of the top block (309) being in corresponding contact with the top surface of the rotating plate (608) and the top of the protrusion (609).

6. The boiler flue gas purification device according to claim 2, characterized in that: The filtering structure comprises a fixed net cylinder (506) fixed to the lower side section of the water inlet pipe (501), and a filter cloth (507) is fixed to the outer side of the fixed net cylinder (506).

7. The boiler flue gas purification device according to claim 2, characterized in that: The top and bottom ends of the water retaining ring seat (503) are both provided with an annular sealing groove (504), a sealing ring (505) is connected to the sealing groove (504) via a plurality of evenly arranged springs, and the outer end surface of the sealing ring (505) contacts the bottom surface of the upper baffle (605) or the top surface of the lower baffle (604) at the corresponding position.

8. The boiler flue gas purification device according to claim 1, characterized in that: The adsorption assembly comprises an adsorption annular groove (202) fixed to the middle of the outer side wall of the fixing box (201), the outer ring side wall of the adsorption annular groove (202) contacts the inner side wall of the purification box (100), a plurality of air permeable grooves are evenly arranged at the bottom of the adsorption annular groove (202), and an air permeable net (203) is fixed in the air permeable grooves, the interior of the adsorption annular groove (202) is filled with an adsorbent, and an annular material pressing net (204) is installed on the top.

9. The boiler flue gas purification device according to claim 1, characterized in that: The lifting assembly comprises a lifting ring plate (406) connected to the top of a plurality of movable shafts (405); a plurality of threaded cylinders (702) are evenly arranged along a circumferential direction on the lifting ring plate (406) and are rotatably connected; a vertical threaded rod (703) is threadedly connected in the threaded cylinder (702), and the threaded rod (703) is fixedly connected to a fixed box (201); a first gear ring (700) is rotatably connected to the top of the lifting ring plate (406); a second gear ring (701) is fixed at a corresponding position on the threaded cylinder (702); the plurality of second gear rings (701) are all meshed with the first gear ring (700), and a second driving gear (704) is also meshed with the first gear ring (700); the second driving gear (704) is rotatably connected to the lifting ring plate (406) and is connected to a motor.

10. The boiler flue gas purification device according to claim 9, characterized in that: A telescopic slot (409) is provided at the lower part of the movable shaft (405), and scraper plates (800) are symmetrically provided on both sides of the outside of the telescopic slot (409), one end of the scraper plate (800) contacts the inner wall of the fixed air pipe (401), and the other end is rotatably connected to a symmetrically inclined lower connecting rod (801) and an upper connecting rod (802) at the upper and lower sides, respectively, and one end of the lower connecting rod (801) is rotatably connected to the bottom of the telescopic slot (409), and a telescopic block (803) is connected to the telescopic slot (409) through a spring, and the ends of the upper connecting rods (802) on both sides are rotatably connected to the two ends of the telescopic block (803), respectively, and a vertical sliding rod is fixed in the middle of the telescopic slot (409), and the sliding rod passes through the telescopic block (803) and is slidably connected to the telescopic block (803); The top end of the movable shaft (405) is rotatably connected to the lifting ring plate (406), and a transmission gear (408) is fixed on the movable shaft (405). The bottom end of the lifting ring plate (406) is rotatably connected to a third gear ring (407). The plurality of transmission gears (408) are all meshed with the third gear ring (407). The third gear ring (407) is also meshed with a third driving gear, and the third driving gear is connected to a motor.

Images