Air inlet device for filtering boiler flue gas

Abstract

The invention relates to the technical field of boiler flue gas filtration, in particular to a gas inlet device for boiler flue gas filtration. The air inlet device for boiler flue gas filtration comprises an air inlet pipeline, rotating valves, an executing mechanism, fan blades, a transmission mechanism, a cleaning pool and a perforated pipe, the input end of the air inlet pipeline communicates with a boiler body, the output end of the air inlet pipeline communicates with a dust remover, and the rotating valves are installed in the air inlet pipeline and close to the input end at equal intervals; an executing mechanism is installed between the rotating valve and the gas inlet pipeline and used for driving the rotating valve to be opened and closed so as to control the gas inlet amount of the flue gas. According to the air inlet device for boiler flue gas filtration, the amount of flue gas generated by combustion in a boiler can be monitored in real time through the integrated sensor and the control system, the opening degree of the rotating valve is intelligently adjusted according to the data, accurate adjustment of the opening degree of the rotating valve is ensured through a worm and gear and a bevel gear transmission system in the executing mechanism, and the operation efficiency is improved. Therefore, the amount of flue gas entering the dust remover can be accurately controlled.

Description

Technical Field

[0001] The invention relates to the technical field of boiler smoke filtration, and in particular to an air intake device for boiler smoke filtration. Background Art

[0002] In industrial production, boilers are important heat energy conversion equipment and are widely used in power generation, heating, chemical industry and other fields. During the operation of the boiler, the flue gas generated by fuel combustion contains a large amount of particulate matter, sulfur dioxide, nitrogen oxides and other pollutants. If it is directly discharged into the atmosphere, it will cause serious pollution to the environment. Therefore, it is particularly important to filter and treat the boiler flue gas efficiently. Traditional boiler flue gas filtration systems usually include dust collectors, desulfurization devices and denitrification devices, among which the dust collector is the most critical link in the filtration system. However, there are many deficiencies in the design of existing air intake devices. For example, the air intake volume cannot be flexibly adjusted according to actual needs, resulting in unstable dust removal efficiency. If the air intake volume is too large and exceeds the processing capacity of subsequent processing equipment such as dust collectors, pollutants in the flue gas cannot be effectively removed, thereby affecting the overall purification effect. On the contrary, if the air intake volume is too small, although it can reduce the burden on the subsequent processing system, it will lead to waste of resources of the processing equipment and reduce the economy of the overall system. Secondly, the preliminary cleaning of the flue gas before entering the processing equipment is also an important means to improve the overall purification efficiency. Boiler flue gas often contains a large amount of particulate matter, including some large solid impurities. If these large impurities directly enter the dust collector, it will not only increase the burden of the dust collector, but also may cause blockage and wear inside the dust collector, reducing the service life of the dust collector.

[0003] Therefore, it is necessary to provide a new air intake device for boiler flue gas filtration to solve the above technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an air intake device for filtering boiler flue gas.

[0005] The air intake device for boiler flue gas filtration provided by the present invention comprises: an air intake pipe, a rotary valve, an actuator, fan blades, a transmission mechanism, a cleaning pool, and a porous tube. The input end of the air intake pipe is connected to a boiler body, and the output end of the air intake pipe is connected to a dust collector. The inside of the air intake pipe is equidistantly installed with a rotary valve near the input end, and an actuator is installed between the rotary valve and the air intake pipe. The actuator is used to drive the opening and closing of the rotary valve to control the air intake amount of the flue gas. Fan blades are equidistantly arranged on one side of the air intake pipe near the rotary valve, and a transmission mechanism is installed between the rotary valve and the fan blades. The transmission mechanism is used to adjust the inclination angle of the fan blades. A cleaning pool is installed near the output end of the air intake pipe, a drain outlet is provided at the bottom of the cleaning pool, a water inlet is provided at the top of the cleaning pool, and a plurality of porous tubes are provided inside the cleaning pool. Circular holes for removing flue gas are equidistantly provided on the surface of the porous tubes.

[0006] Preferably, the actuator includes: a worm wheel, a worm, a driving bevel gear and a driven bevel gear, a side end of the intake duct close to the input is fixedly connected to the first motor, the output end of the first motor extends into the intake duct and is fixedly connected to the worm, and a ring is fixedly connected to the intake duct at equal intervals, one of the two rings close to the first motor is internally rotatably connected to a connecting rod, an end of the connecting rod close to the first motor is fixedly connected to a worm wheel, the worm and the worm wheel are installed in coordination, a middle part of the connecting rod close to several of the rotating valves is fixedly connected to the driving bevel gear, and one end of several of the rotating valves close to the driving bevel gear is fixedly connected to the driven bevel gear, the driving bevel gear and several of the driven bevel gears are installed in coordination, the worm wheel and bevel gear transmission system in the actuator ensures precise adjustment of the opening of the rotating valve, thereby achieving precise control of the amount of flue gas entering the dust collector, and such precise flow control helps to reduce energy waste, improve the operating efficiency of the boiler, and reduce the load on the dust collector.

[0007] Preferably, a second motor is fixedly connected to one side of the middle part of the air intake pipe, the output end of the second motor extends into the air intake pipe and is fixedly connected to a transmission rod, the end of the transmission rod away from the second motor is fixedly connected to a fixing ring, a cylindrical seat is equidistantly connected to the inside of the fixing ring, one end of the cylindrical seat extending out of the fixing ring is fixedly connected to the corresponding fan blade, and the other end of the cylindrical seat away from the axis is fixedly connected to an extension rod.

[0008] Preferably, the transmission mechanism includes: a threaded rod, a threaded sleeve and a rotating drum, the end of the connecting rod away from the worm gear is fixedly connected to the threaded rod, one of the two rings away from the first motor is slidably connected to the threaded sleeve inside, the threaded sleeve and the threaded rod are threadedly connected, and the end of the threaded sleeve away from the threaded rod is rotatably connected to the rotating drum through a bearing. The design of the transmission mechanism enables the inclination angle of the fan blades to be dynamically adjusted according to changes in the flue gas volume, thereby improving the dust removal efficiency and reducing system fluctuations caused by excessive or insufficient flue gas flow.

[0009] Preferably, one end of the rotating drum away from the threaded sleeve is equidistantly rotatably connected to a push rod, and one end of several of the push rods is rotatably connected to corresponding extension rods. Through the cooperation of the rotating drum and the push rods, the angle of the fan blades can be adjusted, thereby controlling the amount of smoke passing through.

[0010] Preferably, the output end of the air inlet duct extends into the interior of the cleaning pool and is fixedly connected to porous tubes at equal intervals. Several of the porous tubes are slidably connected to the inside of air bleed plugs, and the top of the air bleed plug is fixedly connected to a spring. The top of the spring is fixedly connected to the inner wall of the porous tube. This design not only helps to remove particulate matter in the flue gas and reduce the burden on the subsequent dust collector, but also improves the overall cleaning efficiency.

[0011] Preferably, one side of the threaded sleeve is fixedly connected to a limiting slide rail, and one of the two rings away from the first motor has a slide groove corresponding to the limiting slide rail. When the threaded sleeve moves, it will be constrained by the limiting slide rail and the slide groove to prevent it from shaking or deflecting.

[0012] Preferably, a square groove is opened inside one end of the rotating drum, one end of the transmission rod is fixedly connected to a square rod, and the square rod at one end of the transmission rod is slidably connected to the inner wall of the square groove at one end of the rotating drum.

[0013] Compared with the related art, the air intake device for boiler flue gas filtration provided by the present invention has the following beneficial effects: Precise flue gas flow control: By integrating sensors and control systems, the amount of flue gas generated by combustion inside the boiler can be monitored in real time, and the opening of the rotary valve can be intelligently adjusted based on this data. The worm gear and bevel gear transmission system in the actuator ensures the precise adjustment of the opening of the rotary valve, thereby achieving precise control of the amount of flue gas entering the dust collector. This precise flow control helps to reduce energy waste, improve the operating efficiency of the boiler, and reduce the load on the dust collector. Flexible fan blade tilt angle adjustment: The design of the transmission mechanism enables the fan blade tilt angle to be dynamically adjusted according to the change of flue gas volume. When the flue gas volume is large, the transmission mechanism reduces the fan blade tilt angle and weakens the wind force through the threaded connection of the threaded rod and the threaded sleeve, and the cooperation of the rotating drum and the push rod, thereby limiting the flue gas flow. On the contrary, when the flue gas volume is small, the fan blade tilt angle increases, the wind force increases, and the flue gas flow rate increases. This flexible adjustment mechanism helps to maintain the stability of the flue gas flow, improve the dust removal efficiency, and reduce the system fluctuation caused by excessive or insufficient flue gas flow. Efficient initial flue gas cleaning: The output end of the air intake pipe extends into the cleaning pool and exhausts the flue gas through the porous pipe. The air vent plug and spring mechanism inside the porous pipe can automatically open the circular hole when the flue gas passes through, allowing the flue gas to be initially filtered in the water. This design not only helps to remove particulate matter in the flue gas, reducing the burden on the subsequent dust collector, but also improves the overall cleaning efficiency. At the same time, when the flue gas is exhausted, the elastic force of the spring will push the air vent plug downward to block the circular hole, effectively preventing foreign matter from entering the air intake pipe and ensuring the safe operation of the device. By controlling the flue gas intake and the inclination angle of the fan blades, the flue gas flow entering the dust collector is ensured to be stable and moderate. This design helps to improve the dust removal efficiency of the dust collector and reduce the emission concentration of particulate matter, thereby improving air quality and protecting the environment. At the same time, since the flue gas enters the dust collector after preliminary cleaning, the service life and performance stability of the dust collector are also extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an air intake device for boiler flue gas filtration provided by the present invention; Figure 2 for Figure 1 An enlarged structural schematic diagram of the air intake device shown; Figure 3 for Figure 2 A schematic structural diagram of a cross-section of an air intake device shown; Figure 4 for Figure 3 A partially enlarged structural schematic diagram of a porous tube cross section is shown; Figure 5 for Figure 3 The structural schematic diagram of the rotary valve shown; Figure 6 for Figure 5 The partially enlarged structural diagram of the rotary valve shown; Figure 7 for Figure 5 The structural schematic diagram of a partially enlarged cross section of a threaded rod shown; Figure 8 for Figure 3 The schematic diagram of the structure of the fan blade shown; Fig. 9 for Figure 8 The schematic diagram of the structure is a partial enlarged cross-section of the fixing ring shown.

[0015] Numbers in the figure: 1. air inlet duct; 2. rotating valve; 3. fan blade; 4. cleaning pool; 5. drain outlet; 6. water inlet; 7. porous pipe; 8. worm gear; 9. worm; 10. driving bevel gear; 11. driven bevel gear; 12. first motor; 13. collar; 14. connecting rod; 15. threaded rod; 16. threaded sleeve; 17. rotating drum; 18. second motor; 19. transmission rod; 20. fixing ring; 201. cylindrical seat; 202. extension rod; 21. push rod; 22. vent plug; 23. spring; 24. limit slide rail; 25. slide groove. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] See also Figures 1 to 9 , an air intake device for filtering boiler flue gas, the air intake device for filtering boiler flue gas comprises: an air intake pipe 1, a rotary valve 2, an actuator, a fan blade 3, a transmission mechanism, a cleaning pool 4, and a porous tube 7. The input end of the air intake pipe 1 is connected with a boiler body, and the output end of the air intake pipe 1 is connected with a dust collector. The air intake pipe 1 is equidistantly installed with a rotary valve 2 near the input end, and an actuator is installed between the rotary valve 2 and the air intake pipe 1. The actuator is used to drive the opening and closing of the rotary valve 2 to control the air intake amount of the flue gas. The air intake pipe 1 is equidistantly provided with fan blades 3 on one side near the rotary valve 2, and a transmission mechanism is installed between the rotary valve 2 and the fan blade 3. The transmission mechanism is used to adjust the inclination angle of the fan blade 3. The air intake pipe 1 is installed with a cleaning pool 4 near the output end, and a drain port 5 is provided at the bottom of the cleaning pool 4, and a water inlet 6 is provided at the top of the cleaning pool 4. The cleaning pool 4 is provided with a plurality of porous Tube 7, the surface of the porous tube 7 is equidistantly provided with circular holes for exhausting smoke, the actuator comprises: a worm wheel 8, a worm 9, a driving bevel gear 10 and a driven bevel gear 11, the intake pipe 1 is fixedly connected to a first motor 12 at one end close to the input, the output end of the first motor 12 extends into the intake pipe 1 and is fixedly connected to a worm 9, the intake pipe 1 is fixedly connected to a sleeve 13 equidistantly, one of the two sleeves 13 close to the first motor 12 is internally rotatably connected to a connecting rod 14, the connecting rod 14 is fixedly connected to one end close to the first motor 12, the worm 9 and the worm wheel 8 are installed in coordination, the middle part of the connecting rod 14 is fixedly connected to a driving bevel gear 10 close to the position of the plurality of rotary valves 2, the plurality of rotary valves 2 are fixedly connected to one end close to the driving bevel gear 10 with a driven bevel gear 11, the driving bevel gear 10 and the plurality of driven bevel gears 11 are installed in coordination.

[0019] It should be noted that: when the amount of flue gas generated by combustion inside the boiler changes, the sensor inside the radiator on one side of the boiler can detect this change in real time and transmit the signal to the control system. After receiving the signal, the control system controls the start and rotation direction of the first motor 12 according to the amount of flue gas; When the amount of smoke is large: the first motor 12 is located on the side of the air intake duct 1 close to the input end, the output end of the first motor extends into the interior of the air intake duct 1, and is fixedly connected with a worm 9. The first motor 12 rotates forward, and the worm 9 drives the worm wheel 8 to rotate. The worm wheel 8 is fixedly connected to the connecting rod 14. The middle part of the connecting rod 14 is fixedly connected with a driving bevel gear 10 near the rotating valve 2. The driving bevel gear 10 and a plurality of driven bevel gears 11 (one end of each rotating valve 2 close to the driving bevel gear 10 is fixedly connected with a driven bevel gear 11) are installed in coordination, so as to realize synchronous rotation. Since the worm wheel 8 and the worm 9 are self-locking, it can ensure that the rotating valve 2 maintains a stable opening when not affected by external forces. Through the transmission of the worm wheel 8 and the worm 9 and the bevel gear, the opening of the rotating valve 2 is reduced, thereby reducing the amount of smoke passing through the air intake. When the amount of smoke is small: the control system controls the first motor 12 to reverse, and through the cooperation of the worm wheel 8 and the worm 9, and the cooperation of the active bevel gear 10 and the driven bevel gear 11, the opening of the rotary valve 2 is increased, and the amount of smoke passing through is increased; A drain port 5 is provided at the bottom of the cleaning pool 4 and a water inlet 6 is provided at the top. After a period of preliminary filtration, the staff can open the drain port 5 to discharge the sewage and inject clean water from the water inlet 6 .

[0020] See also Figures 5 to 9A second motor 18 is fixedly connected to one side of the middle of the air intake duct 1, and the output end of the second motor 18 extends into the air intake duct 1 and is fixedly connected to a transmission rod 19, and the end of the transmission rod 19 away from the second motor 18 is fixedly connected to a fixing ring 20, and a cylindrical seat 201 is equidistantly connected to the fixing ring 20, and one end of the cylindrical seat 201 extending out of the fixing ring 20 is fixedly connected to the corresponding fan blade 3, and the other end of the cylindrical seat 201 is fixedly connected to an extension rod 202 away from the axis. The transmission mechanism includes: a threaded rod 15, a threaded sleeve 16 and a rotating cylinder 17, and the end of the connecting rod 14 away from the worm gear 8 is fixedly connected to the threaded rod 15, and one of the two sleeves 13 away from the first motor 12 is internally slidably connected A threaded sleeve 16 is connected, and the threaded sleeve 16 and the threaded rod 15 are threadedly connected. The end of the threaded sleeve 16 away from the threaded rod 15 is rotatably connected to a rotating drum 17 through a bearing. The end of the rotating drum 17 away from the threaded sleeve 16 is equidistantly rotatably connected to a push rod 21. One end of a plurality of the push rods 21 is rotatably connected to the corresponding extension rod 202. One side of the threaded sleeve 16 is fixedly connected to a limited position slide rail 24. One of the two collars 13 away from the first motor 12 is provided with a slide groove 25 corresponding to the limited position slide rail 24. A square groove is provided inside one end of the rotating drum 17. One end of the transmission rod 19 is fixedly connected to a square rod. The square rod at one end of the transmission rod 19 is slidably connected to the inner wall of the square groove at one end of the rotating drum 17. It should be noted that: when the second motor 18 is started, the transmission rod 19 fixedly connected to the output end of the second motor 18 also rotates accordingly, and the end of the transmission rod 19 away from the second motor 18 is fixedly connected to the fixing ring 20, and the inside of the fixing ring 20 is equidistantly connected to the cylindrical seat 201, and the fan blade 3 fixedly connected to one end of the cylindrical seat 201 will also rotate with the rotation of the transmission rod 19; When the amount of smoke is large: the end of the connecting rod 14 away from the worm gear 8 is fixedly connected with a threaded rod 15, and the threaded rod 15 is threadedly connected with a threaded sleeve 16. The threaded sleeve 16 slides inside the collar 13, and one side of the threaded sleeve 16 is fixedly connected with a limited slide rail 24. A slide groove 25 corresponding to the limited slide rail 24 is provided inside the collar 13. When the connecting rod 14 (i.e., the threaded rod 15) rotates, the threaded sleeve 16 will move along the threaded rod 15, and the limited slide rail 24 slides in the slide groove 25, ensuring the stable movement of the threaded sleeve 16. The end of the threaded sleeve 16 away from the threaded rod 15 is rotatably connected with a rotating drum 17 through a bearing. A square groove is provided inside one end of the rotating drum 17, which is slidably connected to the square rod at one end of the transmission rod 19. Then, the end of the rotating drum 17 away from the threaded sleeve 16 is equidistantly connected to the push rod 21, and one end of the push rod 21 is rotatably connected to the corresponding extension rod 202. When the threaded sleeve 16 moves along the threaded rod 15, the rotating drum 17 also moves accordingly, and the extension rod 202 is driven by the push rod 21, so that the cylindrical seat 201 rotates at a small angle inside the fixed ring 20, so that the inclination angle of the fan blade 3 becomes smaller, the rotation speed of the fan blade 3 remains unchanged, the inclination angle of the fan blade 3 is reduced, and the contact area between the fan blade 3 and the smoke is reduced, resulting in a reduction in the force of the air being pushed, so that the wind force will be weakened. Since the opening of the rotary valve 2 is reduced, the amount of smoke passing through is reduced, and at the same time, the inclination angle of the fan blade 3 is also reduced, further limiting the amount of smoke passing through; When the amount of smoke is small: the reverse rotation of the connecting rod 14 causes the threaded sleeve 16 to move in the reverse direction, thereby driving the rotating drum 17 to move in the reverse direction, thereby increasing the inclination angle of the fan blade 3. The increase in the angle of the fan blade 3 will increase the wind force, thereby generating a stronger wind force; due to the increase in the opening of the rotary valve 2, the amount of smoke passing through increases, and at the same time, the inclination angle of the fan blade 3 also increases, further increasing the amount of smoke passing through; See also Figure 3 and Figure 4 The output end of the air inlet pipe 1 extends into the interior of the cleaning pool 4 and is equidistantly fixedly connected to a porous tube 7, and a plurality of the porous tubes 7 are slidably connected to the interior of the leak plugs 22, and the top of the leak plug 22 is fixedly connected to a spring 23, and the top of the spring 23 is fixedly connected to the inner wall of the porous tube 7; It should be noted that: the output end of the air inlet pipe 1 extends into the interior of the cleaning pool 4 and is equidistantly fixedly connected to a porous tube 7, the interior of the porous tube 7 is slidably connected to a bleed plug 22, and the top of the bleed plug 22 is fixedly connected to a spring 23. When the flue gas reaches the porous tube 7, the internal pressure of the porous tube 7 increases, the bleed plug 22 will be lifted up and compress the spring 23, releasing part of the pressure to allow the flue gas to be discharged from the circular hole, and the flue gas will initially filter out particulate matter in the water, reducing the burden on the subsequent dust collector. When the pressure decreases, the elastic force of the spring 23 will push the bleed plug 22 downward until the flue gas is completely discharged, and the bleed plug 22 returns to its original position to continue sealing the porous tube 7.

[0021] The working principle of the air intake device for boiler smoke filtration provided by the present invention is as follows: When the amount of flue gas generated by combustion inside the boiler changes, the sensor inside the radiator on one side of the boiler can detect this change in real time and transmit the signal to the control system. After receiving the signal, the control system controls the start and rotation direction of the first motor 12 according to the amount of flue gas; When the amount of smoke is large: The first motor 12 is located on a side of the air intake duct 1 close to the input end, and the output end of the first motor extends into the air intake duct 1 and is fixedly connected to a worm 9. When the first motor 12 rotates in the forward direction, the worm 9 drives the worm wheel 8 to rotate, and the worm wheel 8 is fixedly connected to a connecting rod 14. A driving bevel gear 10 is fixedly connected to a position in the middle of the connecting rod 14 close to the rotary valve 2. The driving bevel gear 10 is installed in cooperation with a plurality of driven bevel gears 11 (one end of each rotary valve 2 close to the driving bevel gear 10 is fixedly connected to a driven bevel gear 11), so as to realize synchronous rotation. Since the worm wheel 8 and the worm 9 are self-locking, it can ensure that the rotary valve 2 maintains a stable opening when not subjected to external force. Through the transmission of the worm wheel 8 and the worm 9 and the bevel gear, the opening of the rotary valve 2 is reduced, thereby reducing the amount of smoke passing through the air intake; At the same time, the second motor 18 is started, and the transmission rod 19 fixedly connected to the output end of the second motor 18 also rotates accordingly. The end of the transmission rod 19 away from the second motor 18 is fixedly connected to a fixing ring 20, and the interior of the fixing ring 20 is equidistantly connected to a cylindrical seat 201, and the fan blade 3 fixedly connected to one end of the cylindrical seat 201 also rotates with the rotation of the transmission rod 19; The end of the connecting rod 14 away from the worm gear 8 is fixedly connected to a threaded rod 15, and the threaded rod 15 is threadedly connected to a threaded sleeve 16. The threaded sleeve 16 slides inside the collar 13. One side of the threaded sleeve 16 is fixedly connected to a limited slide rail 24. A slide groove 25 corresponding to the limited slide rail 24 is provided inside the collar 13. When the connecting rod 14 (i.e., the threaded rod 15) rotates, the threaded sleeve 16 moves along the threaded rod 15, and the limited slide rail 24 slides in the slide groove 25, ensuring the stable movement of the threaded sleeve 16. The end of the threaded sleeve 16 away from the threaded rod 15 is rotatably connected to a rotating drum 17 through a bearing. One end of the rotating drum 17 is internally opened. A square groove is provided, which is slidably connected to the square rod at one end of the transmission rod 19. The end of the rotating drum 17 away from the threaded sleeve 16 is equidistantly connected to the push rod 21, and one end of the push rod 21 is rotatably connected to the corresponding extension rod 202. When the threaded sleeve 16 moves along the threaded rod 15, the rotating drum 17 also moves accordingly, and the extension rod 202 is driven by the push rod 21, so that the cylindrical seat 201 rotates at a small angle inside the fixing ring 20, so that the inclination angle of the fan blade 3 becomes smaller, the rotation speed of the fan blade 3 remains unchanged, the inclination angle of the fan blade 3 is reduced, and the contact area between the fan blade 3 and the smoke is reduced, resulting in a reduction in the force of the air being pushed, so that the wind force will be weakened; As the opening of the rotary valve 2 decreases, the amount of smoke passing through decreases, and at the same time, the inclination angle of the fan blade 3 also decreases, further limiting the amount of smoke passing through; Smoke volume per hour: The control system controls the first motor 12 to reverse, and through the cooperation of the worm wheel 8 and the worm 9 and the cooperation of the active bevel gear 10 and the driven bevel gear 11, the opening of the rotary valve 2 is increased, the amount of smoke passing through is increased, and the reverse rotation of the connecting rod 14 causes the threaded sleeve 16 to move in the reverse direction, thereby driving the rotating drum 17 to move in the reverse direction, thereby increasing the inclination angle of the fan blade 3. The increase in the angle of the fan blade 3 will increase the wind force, thereby generating a stronger wind force; As the opening of the rotary valve 2 increases, the amount of smoke passing through increases, and at the same time, the inclination angle of the fan blade 3 also increases, further increasing the amount of smoke passing through; Initial cleaning of flue gases: The output end of the air inlet pipe 1 extends into the interior of the cleaning pool 4 and is equidistantly fixedly connected to a porous tube 7. The interior of the porous tube 7 is slidably connected to a bleed plug 22, and the top of the bleed plug 22 is fixedly connected to a spring 23. When the flue gas reaches the porous tube 7, the internal pressure of the porous tube 7 increases, the bleed plug 22 will be lifted up and compress the spring 23, releasing part of the pressure to allow the flue gas to be discharged from the circular hole. The flue gas will initially filter out particulate matter in the water, reducing the burden on the subsequent dust collector. When the pressure decreases, the elastic force of the spring 23 will push the bleed plug 22 downward until the flue gas is completely discharged, and the bleed plug 22 returns to its original position and continues to seal the porous tube 7.

[0022] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air intake device for boiler flue gas filtration, characterized in that: include: An air intake pipe (1), wherein an input end of the air intake pipe (1) is connected to a boiler body, and an output end of the air intake pipe (1) is connected to a dust collector; Rotary valves (2), with rotary valves (2) being installed equidistantly inside the air intake pipe (1) and close to the input end; An actuator is installed between the rotary valve (2) and the air intake duct (1), and is used to drive the rotary valve (2) to open and close to control the intake amount of smoke; Fan blades (3) are arranged at equal intervals on one side of the air inlet pipe (1) close to the rotary valve (2); A transmission mechanism is installed between the rotary valve (2) and the fan blade (3), and the transmission mechanism is used to adjust the inclination angle of the fan blade (3); A cleaning pool (4), wherein the air inlet pipe (1) is provided with a cleaning pool (4) near the output end, a drainage port (5) is provided at the bottom of the cleaning pool (4), and a water inlet (6) is provided at the top of the cleaning pool (4); A porous tube (7), wherein a plurality of porous tubes (7) are arranged inside the cleaning pool (4), and circular holes for exhausting smoke are equidistantly provided on the surface of the porous tube (7).

2. The air intake device for boiler flue gas filtration according to claim 1, characterized in that: The actuator comprises: a worm wheel (8), a worm (9), a driving bevel gear (10) and a driven bevel gear (11); a first motor (12) is fixedly connected to a side end of the intake pipe (1) close to the input; an output end of the first motor (12) extends into the intake pipe (1) and is fixedly connected to the worm (9); a sleeve (13) is fixedly connected to the intake pipe (1) at an equidistant distance; a connecting rod (14) is rotatably connected to one of the two sleeves (13) close to the first motor (12); an end of the connecting rod (14) close to the first motor (12) is fixedly connected to the worm wheel (8); the worm (9) and the worm wheel (8) are mounted in coordination; a driving bevel gear (10) is fixedly connected to the middle of the connecting rod (14) close to a plurality of the rotary valves (2); a driven bevel gear (11) is fixedly connected to one end of the plurality of the rotary valves (2) close to the driving bevel gear (10); and the driving bevel gear (10) and the plurality of the driven bevel gears (11) are mounted in coordination.

3. The air intake device for boiler flue gas filtration according to claim 2, characterized in that: A second motor (18) is fixedly connected to one side of the middle of the air intake duct (1); an output end of the second motor (18) extends into the air intake duct (1) and is fixedly connected to a transmission rod (19); an end of the transmission rod (19) away from the second motor (18) is fixedly connected to a fixing ring (20); a cylindrical seat (201) is equidistantly rotatably connected to the inside of the fixing ring (20); one end of a plurality of the cylindrical seats (201) extending out of the fixing ring (20) is fixedly connected to a corresponding fan blade (3); and the other end of the cylindrical seat (201) away from the axis is fixedly connected to an extension rod (202).

4. The air intake device for boiler flue gas filtration according to claim 3, characterized in that: The transmission mechanism comprises: a threaded rod (15), a threaded sleeve (16) and a rotating drum (17); one end of the connecting rod (14) away from the worm gear (8) is fixedly connected to the threaded rod (15); one of the two collars (13) away from the first motor (12) is slidably connected to the threaded sleeve (16); the threaded sleeve (16) and the threaded rod (15) are threadedly connected; and one end of the threaded sleeve (16) away from the threaded rod (15) is rotatably connected to the rotating drum (17) via a bearing.

5. The air intake device for boiler flue gas filtration according to claim 3, characterized in that: One end of the rotating cylinder (17) away from the threaded sleeve (16) is equidistantly rotatably connected to a push rod (21), and one end of a plurality of the push rods (21) is rotatably connected to a corresponding extension rod (202).

6. The air intake device for boiler flue gas filtration according to claim 1, characterized in that: The output end of the air inlet pipe (1) extends into the interior of the cleaning pool (4) and is equidistantly fixedly connected to a plurality of porous tubes (7), a plurality of the porous tubes (7) are slidably connected to the interior of the plurality of porous tubes (7), a spring (23) is fixedly connected to the top of the air vent plug (22), and the top of the spring (23) is fixedly connected to the inner wall of the porous tube (7).

7. The air intake device for boiler flue gas filtration according to claim 3, characterized in that: One side of the threaded sleeve (16) is fixedly connected to a limiting slide rail (24), and one of the two collars (13) away from the first motor (12) is provided with a slide groove (25) corresponding to the limiting slide rail (24).

8. The air intake device for boiler flue gas filtration according to claim 4, characterized in that: A square groove is provided inside one end of the rotating drum (17), one end of the transmission rod (19) is fixedly connected to a square rod, and the square rod at one end of the transmission rod (19) is slidably connected to the inner wall of the square groove at one end of the rotating drum (17).

Images