Post-heater boiler and its control method

Abstract

This invention discloses a post-air preheating boiler and its control method, belonging to the field of boiler technology. It includes a support frame; a boiler body, the bottom of which is fixedly connected to the top of the support frame; and a waste heat recovery mechanism, comprising an air preheater body and preheating components. The bottom of the air preheater body is fixedly connected to the top of the boiler body, and the preheating components are disposed on the air preheater body and the boiler body. A fixed motor adjusts the movement of a scraper and a fixed box, and an installed motor adjusts the rotation of a stirring rod, which rotates while simultaneously rotating, thus stirring the water inside the boiler body, increasing its fluidity, and uniformly heating the water. The movement of the scraper cleans the scale on the inner wall of the boiler body. The waste heat from the flue gas discharged from the boiler tail flue generated by the air preheater body is transferred through a transmission pipe and a curved pipe. The waste heat preheats and insulates the boiler body through the curved pipe and insulation plate.

Description

Technical Field

[0001] This invention belongs to the field of boiler technology, specifically a post-air preheated boiler and its control method. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy. The original meaning of "boiler" refers to a water-filled container heated over a fire, while "furnace" refers to the place where fuel is burned. A boiler consists of two main parts: the boiler and the furnace. The hot water or steam produced in a boiler can directly provide the heat energy needed for industrial production and people's lives. It can also be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used for domestic purposes, with some applications in industrial production. Boilers that produce steam are called steam boilers, often simply referred to as boilers, and are mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises.

[0003] Traditional boiler systems face numerous challenges in terms of energy utilization and environmental protection. The flue gas in the boiler tail flue often carries a large amount of waste heat. If this heat cannot be effectively recovered, it will lead to a huge waste of energy. When heating water in a traditional boiler, the water has poor flow, resulting in uneven heating. At the same time, the inner wall of a traditional boiler is easily affected by high-temperature water and flue gas for a long time, which can easily form scale that is difficult to remove. This not only reduces the heat exchange efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rear-mounted air preheater boiler and its control method. A fixed motor drives a fixed threaded rod to rotate. Two limiting rods limit the movement of a moving plate, which in turn moves a scraper and a fixed box on the fixed threaded rod. An installation motor is activated, driving a fixed synchronous pulley to rotate. Through a synchronous belt, the transmission synchronous pulley drives a connecting rod and a rotating plate to rotate. The rotating plate then drives a stirring rod to rotate. The meshing of a fixed gear and a transmission gear ring causes the stirring rod to rotate simultaneously, agitating the water inside the boiler body and increasing its fluidity, thus heating the water evenly. The movement of the scraper cleans scale from the inner wall of the boiler body. The waste heat from the flue gas discharged from the boiler's tail flue is transferred through the air preheater body and then transmitted through a transmission pipe and a curved pipe. The waste heat is then used to preheat and insulate the boiler body through the curved pipe and insulation plate.

[0005] The technical solution adopted in this invention is as follows: a post-air preheater boiler and its control method, comprising: a support frame; a boiler body, the bottom of which is fixedly connected to the top of the support frame; a waste heat recovery mechanism, comprising an air preheater body and a preheating component, the bottom of which is fixedly connected to the top of the boiler body, and the preheating component disposed on the air preheater body and the boiler body; a moving mechanism, comprising two sets, each set comprising an adjusting component, a wall scraping component, a rotating component, a power component, and three sets of stirring components, the adjusting component being disposed within the boiler body, the wall scraping component being disposed on the adjusting component, the rotating component being disposed on the wall scraping component, and each set of stirring components and power components being disposed on the rotating component; and a transmission mechanism, comprising a rotating component and a transmission component, the transmission component being disposed at the bottom of the boiler body, and the rotating component being disposed on the transmission component.

[0006] The preheating component includes a transmission pipe, two bent pipes, and two insulation plates. One end of the transmission pipe is fixedly connected to the top of the air preheater body. One side of each insulation plate is fixedly connected to the outer surface of the boiler body. One end of each bent pipe is fixedly connected to one end of the transmission pipe, and each bent pipe is fixedly embedded inside the insulation plate.

[0007] The adjusting component includes a fixed motor, a fixed threaded rod, and two limiting rods. The fixed motor is fixedly connected to one outer surface of the boiler body. Both ends of the fixed threaded rod are rotatably connected between the inner walls of both sides of the boiler body, and one end of the fixed threaded rod is fixedly connected to the output end of the fixed motor. Both ends of each limiting rod are fixed between the inner walls of both sides of the boiler body.

[0008] The wall scraping component includes a movable plate and a scraper. The movable plate is threaded onto the outer surface of the fixed threaded rod and is slidably sleeved between two limiting rods.

[0009] The rotating component includes a fixed box, three rotating plates, and three connecting rods. The outer surface of one side of the fixed box is fixed to the outer surface of one side of the moving plate. Each rotating plate is rotatably embedded between the inner walls of one side of the fixed box. One end of each connecting rod is rotatably connected to the inner wall of one side of the fixed box, and the other end of each connecting rod is rotatably connected to the outer surface of one side of the rotating plate.

[0010] The power component includes three transmission synchronous pulleys, a mounting motor, and a fixed synchronous pulley. Each transmission synchronous pulley is fixedly sleeved on one side of the outer surface of the connecting rod. The mounting motor is fixedly connected to the lower inner wall of the fixed box. The fixed synchronous pulley is fixedly sleeved on the output end of the mounting motor, and the fixed synchronous pulley and the three transmission synchronous pulleys are mutually driven by a synchronous belt.

[0011] Each set of stirring components includes a fixed frame, a transmission gear ring, multiple fixed gears, and multiple stirring rods. One end of the fixed frame is fixedly connected to the inner wall of one side of the fixed box. The transmission gear ring is fixedly sleeved on the outer surface of the fixed frame. One end of each stirring rod rotatably passes through the outer surface of the rotating plate. Each fixed gear is fixedly sleeved on the outer surface of the stirring rod, and each fixed gear meshes with the transmission gear ring.

[0012] The transmission component includes a transmission frame, multiple transmission rollers, and multiple rotating synchronous wheels. The top of the transmission frame is fixedly connected to the bottom of the boiler body. Each transmission roller is rotatably connected between the inner walls on both sides of the transmission frame. Each rotating synchronous wheel is fixedly sleeved on the outer surface of the transmission roller.

[0013] The rotating component includes a transmission motor and a transmission synchronous pulley. The transmission motor is fixedly connected to one outer surface of the transmission frame, and the transmission synchronous pulley is fixedly sleeved on the output end of the transmission motor. The transmission synchronous pulley and multiple rotating synchronous pulleys are mutually driven by a synchronous belt.

[0014] The control method for a post-heater boiler includes the following steps:

[0015] Step 1, Preheating and Insulation: The waste heat in the flue gas discharged from the boiler tail flue generated by the boiler body is transferred through the air preheater body and then transferred out through the transmission pipe and the bending pipe. The waste heat is used to preheat and insulate the boiler body through the bending pipe and the insulation board.

[0016] Step 2: Evenly heating water: Turn on the fixed motor, which drives the fixed threaded rod to rotate. Through the limiting of two limit rods, the moving plate drives the scraper and the fixed box to move on the fixed threaded rod. Turn on the installation motor, which drives the fixed synchronous pulley to rotate. Through the transmission of the synchronous belt, the transmission synchronous pulley drives the connecting rod and the rotating plate to rotate. The rotating plate drives the stirring rod to rotate. Through the meshing of the fixed gear and the transmission gear ring, the stirring rod rotates on its own while rotating, stirring the water in the boiler body and increasing the water flow, thereby heating the water evenly. The movement of the scraper can clean the scale on the inner wall of the boiler body.

[0017] Step 3, scale removal: After cleaning the scale on the inner wall of the boiler body with a scraper, the scale is moved by the scraper. The transfer motor is turned on, and the transfer motor drives the transfer synchronous pulley to rotate. Through the transmission of the synchronous belt, the rotating synchronous pulley drives the transfer roller to rotate, and the scale is transferred to the outside of the boiler body.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] (1) In this invention, a fixed motor drives a fixed threaded rod to rotate. Through the limiting of two limiting rods, a moving plate drives a scraper and a fixed box to move on the fixed threaded rod. The installation motor is turned on, and the installation motor drives a fixed synchronous wheel to rotate. Through the transmission of the synchronous belt, the transmission synchronous wheel drives the connecting rod and the rotating plate to rotate. The rotating plate drives the stirring rod to rotate. Through the meshing of the fixed gear and the transmission gear ring, the stirring rod rotates while rotating, stirring the water in the boiler body and increasing the water flow, thereby heating the water evenly. Through the movement of the scraper, the scale on the inner wall of the boiler body can be cleaned.

[0020] (2) In this invention, the waste heat in the flue gas discharged from the tail flue of the boiler body is transferred through the air preheater body and transmitted through the transmission pipe and the bending pipe. The waste heat is preheated and insulated by the bending pipe and the insulation plate. Attached Figure Description

[0021] Figure 1 This is a frontal perspective view of the present invention;

[0022] Figure 2 This is a frontal three-dimensional sectional view of the present invention;

[0023] Figure 3 This is a frontal perspective half-sectional view of the present invention;

[0024] Figure 4 This is a side perspective sectional view of the three-dimensional portion of the present invention;

[0025] Figure 5 This is a top-view sectional view of the three-dimensional portion of the present invention;

[0026] Figure 6 This is a top perspective sectional view of the transmission mechanism portion of the present invention;

[0027] Figure 7 This is a front perspective view of the moving mechanism portion of the present invention;

[0028] Figure 8 This is a front perspective perspective sectional view of the moving mechanism portion of the present invention;

[0029] Figure 9 This is a side perspective sectional view of the moving mechanism portion of the present invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged view of part A;

[0031] Figure 11 This is a top perspective sectional view of the moving mechanism portion of the present invention.

[0032] The diagram shows the following components: 1. Boiler body; 2. Waste heat recovery mechanism; 201. Air preheater body; 202. Transmission pipe; 203. Bending pipe; 204. Insulation board; 3. Moving mechanism; 301. Fixed motor; 302. Fixed threaded rod; 303. Limiting rod; 304. Moving plate; 305. Scraper; 306. Fixed box; 307. Rotating plate; 308. Stirring rod; 309. Fixed gear; 310. Transmission gear ring; 311. Fixed frame; 312. Connecting rod; 313. Installed motor; 314. Fixed synchronous pulley; 315. Transmission synchronous pulley; 4. Support frame; 5. Transmission mechanism; 501. Transmission frame; 502. Transmission motor; 503. Transmission synchronous pulley; 504. Rotating synchronous pulley; 505. Transmission roller. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] Reference Figures 1-11 This invention provides a technical solution: a post-air preheater boiler, comprising: a support frame 4; a boiler body 1, the bottom of which is fixedly connected to the top of the support frame 4; a waste heat recovery mechanism 2, comprising an air preheater body 201 and a preheating component, the bottom of which is fixedly connected to the top of the boiler body 1, and the preheating component being disposed on the air preheater body 201 and the boiler body 1; a moving mechanism 3, comprising two sets, each set including an adjusting component, a wall scraping component, a rotating component, a power component, and three sets of stirring components, the adjusting component being disposed inside the boiler body 1, the wall scraping component being disposed on the adjusting component, the rotating component being disposed on the wall scraping component, and each set of stirring components and power components being disposed on the rotating component; and a transmission mechanism 5, comprising a rotating component and a transmission component, the transmission component being disposed at the bottom of the boiler body 1, and the rotating component being disposed on the transmission component.

[0035] In this implementation scheme: the support frame 4 is used to support the boiler body 1; the waste heat recovery mechanism 2 can recover and utilize the waste heat in the flue gas discharged from the boiler tail flue generated by the boiler body 1; the preheating component is used for preheating and heat preservation; the moving mechanism 3 is used to evenly heat the water and remove scale from the inner wall of the boiler body 1; the adjusting component is used to adjust the position of the wall scraping component; the cooperation of the rotating component, the power component, and the three sets of stirring components can make the stirring component rotate to increase the flow of water; the transmission mechanism 5 is used to transport scale; the cooperation of the rotating component and the transmission component is used to transport scale. The structure and principle of the waste heat recovery mechanism 2 are existing technologies and will not be described in detail here. Its model can be selected according to the actual use.

[0036] Specifically, the preheating component includes a transmission pipe 202, two bent pipes 203, and two insulation plates 204. One end of the transmission pipe 202 is fixedly connected to the top of the air preheater body 201. One side of each insulation plate 204 is fixedly connected to the outer surface of the boiler body 1. One end of each bent pipe 203 is fixedly connected to one end of the transmission pipe 202, and each bent pipe 203 is fixedly embedded inside the insulation plate 204.

[0037] In this embodiment: the heat is transmitted through the transmission pipe 202 and the bending pipe 203, and the waste heat is preheated and insulated by the bending pipe 203 and the insulation plate 204.

[0038] Specifically, the adjusting components include a fixed motor 301, a fixed threaded rod 302, and two limiting rods 303. The fixed motor 301 is fixedly connected to one side of the outer surface of the boiler body 1. Both ends of the fixed threaded rod 302 are rotatably connected between the inner walls of both sides of the boiler body 1, and one end of the fixed threaded rod 302 is fixedly connected to the output end of the fixed motor 301. Both ends of each limiting rod 303 are fixed between the inner walls of both sides of the boiler body 1.

[0039] In this embodiment: the fixed motor 301 drives the fixed threaded rod 302 to rotate. Through the limiting of two limit rods 303, the wall scraping component can be adjusted to move on the fixed threaded rod 302. The fixed motor 301 is a forward and reverse motor, which can adjust the rotation direction of the fixed threaded rod 302. Now, when it agitates water and removes scale, the rotation directions of the two fixed motors 301 can be reversed, thereby increasing the fluidity of the water and making it heat evenly. The structure and principle of the fixed motor 301 are existing technologies and will not be described in detail here. Its model can be selected according to the actual use.

[0040] Specifically, the wall scraping component includes a movable plate 304 and a scraper 305. The movable plate 304 is threaded onto the outer surface of the fixed threaded rod 302, and the movable plate 304 is slidably sleeved between the two limiting rods 303.

[0041] In this embodiment, the movable plate 304 can drive the scraper 305 to move on the fixed threaded rod 302 to remove scale from the inside of the boiler body 1.

[0042] Specifically, the rotating component includes a fixed box 306, three rotating plates 307 and three connecting rods 312. The outer surface of one side of the fixed box 306 is fixed to the outer surface of one side of the moving plate 304. Each rotating plate 307 is rotatably embedded between the inner walls of one side of the fixed box 306. One end of each connecting rod 312 is rotatably connected to the inner wall of one side of the fixed box 306, and the other end of each connecting rod 312 is rotatably connected to the outer surface of one side of the rotating plate 307.

[0043] In this embodiment: the fixed box 306 is used to install three rotating plates 307 and three connecting rods 312, and the three connecting rods 312 are used to connect the rotating plates 307.

[0044] Specifically, the power component includes three transmission synchronous pulleys 315, a mounting motor 313, and a fixed synchronous pulley 314. Each transmission synchronous pulley 315 is fixedly sleeved on one outer surface of the connecting rod 312. The mounting motor 313 is fixedly connected to the lower inner wall of the fixed box 306. The fixed synchronous pulley 314 is fixedly sleeved on the output end of the mounting motor 313, and the fixed synchronous pulley 314 and the three transmission synchronous pulleys 315 are mutually driven by a synchronous belt.

[0045] In this embodiment, the three transmission synchronous pulleys 315 and the fixed synchronous pulley 314 are configured for transmission. The fixed synchronous pulley 314 is driven to rotate by the installed motor 313. Through the transmission of the synchronous belt, the transmission synchronous pulleys 315 drive the connecting rod 312 and the rotating plate 307 to rotate. The structure and principle of the installed motor 313 are existing technologies and will not be described in detail here. Its model can be selected according to the actual use.

[0046] Specifically, each set of stirring components includes a fixed frame 311, a transmission gear ring 310, multiple fixed gears 309, and multiple stirring rods 308. One end of the fixed frame 311 is fixedly connected to the inner wall of one side of the fixed box 306. The transmission gear ring 310 is fixedly sleeved on the outer surface of the fixed frame 311. One end of each stirring rod 308 rotatably passes through the outer surface of the rotating plate 307. Each fixed gear 309 is fixedly sleeved on the outer surface of the stirring rod 308, and each fixed gear 309 meshes with the transmission gear ring 310.

[0047] In this embodiment: the rotating plate 307 drives the stirring rod 308 to rotate, and through the meshing of the fixed gear 309 and the transmission gear ring 310, the stirring rod 308 rotates on its own axis while rotating, stirring the water in the boiler body 1, increasing the water's fluidity, and thus heating the water evenly.

[0048] Specifically, the transmission component includes a transmission frame 501, multiple transmission rollers 505, and multiple rotating synchronous wheels 504. The top of the transmission frame 501 is fixedly connected to the bottom of the boiler body 1. Each transmission roller 505 is rotatably connected between the inner walls on both sides of the transmission frame 501. Each rotating synchronous wheel 504 is fixedly sleeved on the outer surface of the transmission roller 505.

[0049] In this embodiment: the bottom of the transmission frame 501 has a fixed cover. When collecting scale, the fixed cover is opened. The transmission frame 501 is used to install the transmission roller 505. The transmission roller 505 is rotated by the cooperation of the rotating component, and the scale is transmitted to the outside of the boiler body 1.

[0050] Specifically, the rotating component includes a transmission motor 502 and a transmission synchronous pulley 503. The transmission motor 502 is fixedly connected to one side of the outer surface of the transmission frame 501, and the transmission synchronous pulley 503 is fixedly sleeved on the output end of the transmission motor 502. The transmission synchronous pulley 503 and multiple rotating synchronous pulleys 504 are mutually driven by a synchronous belt.

[0051] In this embodiment: by turning on the transmission motor 502, the transmission motor 502 drives the transmission synchronous wheel 503 to rotate. Through the transmission of the synchronous belt, the rotating synchronous wheel 504 rotates, driving the transmission roller 505 to rotate, thus transferring the scale out of the boiler body 1. The structure and principle of the transmission motor 502 are existing technologies and will not be described in detail here. Its model can be selected according to the actual use.

[0052] The following describes in detail the usage method of the post-air preheated boiler and its control method provided in the embodiments of the present invention. The usage method includes the following steps: Step 1, Preheating and Insulation: The waste heat in the flue gas discharged from the boiler tail flue generated by the boiler body 1 is transferred through the air preheater body 201 and transmitted through the transmission pipe 202 and the bent pipe 203. The waste heat preheats and insulates the boiler body 1 through the bent pipe 203 and the insulation plate 204; Step 2, Uniformly Heating Water: The fixed motor 301 is turned on, and the fixed motor 301 drives the fixed threaded rod 302 to rotate. Through the limitation of the two limit rods 303, the moving plate 304 drives the scraper 305 and the fixed box 306 to move on the fixed threaded rod 302. The mounting motor 313 is turned on, and the mounting motor 313 drives the fixed synchronous wheel 314 to rotate. The belt drive causes the transmission synchronous pulley 315 to drive the connecting rod 312 and the rotating plate 307 to rotate. The rotating plate 307 drives the stirring rod 308 to rotate. Through the meshing of the fixed gear 309 and the transmission gear ring 310, the stirring rod 308 rotates on its own axis while rotating, stirring the water in the boiler body 1, increasing the water's fluidity, and thus heating the water evenly. The scraper 305 can clean the scale on the inner wall of the boiler body 1 by moving. Step 3: Scale transfer: After the scale on the inner wall of the boiler body 1 is cleaned by the scraper 305, the scale is moved by the scraper 305. The transmission motor 502 is turned on, and the transmission synchronous pulley 503 is driven to rotate. Through the transmission of the synchronous belt, the rotating synchronous pulley 504 is driven to rotate, which drives the transmission roller 505 to rotate, transferring the scale to the outside of the boiler body 1.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A post-heater preheating boiler, characterized in that, include: Support frame (4); Boiler body (1), the bottom of which is fixedly connected to the top of support frame (4); Waste heat recovery mechanism (2), the waste heat recovery mechanism (2) includes an air preheater body (201) and a preheating component. The bottom of the air preheater body (201) is fixedly connected to the top of the boiler body (1). The preheating component is disposed on the air preheater body (201) and the boiler body (1). The moving mechanism (3) is provided in two groups. Each group of the moving mechanism (3) includes an adjusting component, a wall scraping component, a rotating component, a power component and three groups of stirring components. The adjusting component is located inside the boiler body (1). The wall scraping component is located on the adjusting component. The rotating component is located on the wall scraping component. Each group of stirring components and power components is located on the rotating component. The adjusting component includes a fixed motor (301), a fixed threaded rod (302), and two limiting rods (303). The fixed motor (301) is fixedly connected to the outer surface of one side of the boiler body (1). Both ends of the fixed threaded rod (302) are rotatably connected between the inner walls of both sides of the boiler body (1), and one end of the fixed threaded rod (302) is fixedly connected to the output end of the fixed motor (301). Both ends of each limiting rod (303) are fixed between the inner walls of both sides of the boiler body (1). The wall scraping component includes a movable plate (304) and a scraper (305). The movable plate (304) is threaded onto the outer surface of the fixed threaded rod (302), and the movable plate (304) is slidably sleeved between two limiting rods (303). The rotating component includes a fixed box (306), three rotating plates (307) and three connecting rods (312). The outer surface of one side of the fixed box (306) is fixed to the outer surface of one side of the movable plate (304). Each rotating plate (307) is rotatably embedded between the inner walls of one side of the fixed box (306). One end of each connecting rod (312) is rotatably connected to the inner wall of one side of the fixed box (306), and the other end of each connecting rod (312) is rotatably connected to the outer surface of one side of the rotating plate (307). The power component includes three transmission synchronous pulleys (315), a mounting motor (313), and a fixed synchronous pulley (314). Each transmission synchronous pulley (315) is fixedly sleeved on one side of the outer surface of the connecting rod (312). The mounting motor (313) is fixedly connected to the lower inner wall of the fixed box (306). The fixed synchronous pulley (314) is fixedly sleeved on the output end of the mounting motor (313), and the fixed synchronous pulley (314) and the three transmission synchronous pulleys (315) are mutually driven by a synchronous belt. Each of the stirring components includes a fixed frame (311), a transmission gear ring (310), multiple fixed gears (309), and multiple stirring rods (308). One end of the fixed frame (311) is fixedly connected to the inner wall of one side of the fixed box (306). The transmission gear ring (310) is fixedly sleeved on the outer surface of the fixed frame (311). One end of each stirring rod (308) rotatably passes through the outer surface of the rotating plate (307). Each fixed gear (309) is fixedly sleeved on the outer surface of the stirring rod (308), and each fixed gear (309) meshes with the transmission gear ring (310). as well as The transmission mechanism (5) includes a rotating component and a transmission component. The transmission component is located at the bottom of the boiler body (1), and the rotating component is located on the transmission component.

2. The post-heater boiler as described in claim 1, characterized in that: The preheating component includes a transmission pipe (202), two bent pipes (203) and two insulation plates (204). One end of the transmission pipe (202) is fixedly connected to the top of the air preheater body (201). One side of each insulation plate (204) is fixedly connected to the outer surface of the boiler body (1). One end of each bent pipe (203) is fixedly connected to one end of the transmission pipe (202), and each bent pipe (203) is fixedly embedded inside the insulation plate (204).

3. The post-heater boiler as described in claim 2, characterized in that: The transmission component includes a transmission frame (501), multiple transmission rollers (505) and multiple rotating synchronous wheels (504). The top of the transmission frame (501) is fixedly connected to the bottom of the boiler body (1). Each transmission roller (505) is rotatably connected between the inner walls on both sides of the transmission frame (501). Each rotating synchronous wheel (504) is fixedly sleeved on the outer surface of the transmission roller (505).

4. The post-heater boiler as described in claim 3, characterized in that: The rotating component includes a transmission motor (502) and a transmission synchronous pulley (503). The transmission motor (502) is fixedly connected to one side of the outer surface of the transmission frame (501). The transmission synchronous pulley (503) is fixedly sleeved on the output end of the transmission motor (502). The transmission synchronous pulley (503) and multiple rotating synchronous pulleys (504) are mutually driven by a synchronous belt.

5. A control method for a post-air preheated boiler, applied to the post-air preheated boiler as described in claim 4, characterized in that, Includes the following steps: S1. Preheating and heat preservation: The waste heat in the flue gas discharged from the boiler tail flue generated by the boiler body (1) is transferred through the air preheater body (201) and then transferred out through the transmission pipe (202) and the bent pipe (203). The waste heat is preheated and heat-preserved by the boiler body (1) through the bent pipe (203) and the heat preservation plate (204). S2. Uniformly heating water: Turn on the fixed motor (301), which drives the fixed threaded rod (302) to rotate. Through the limitation of the two limit rods (303), the moving plate (304) drives the scraper (305) and the fixed box (306) to move on the fixed threaded rod (302). Turn on the installation motor (313), which drives the fixed synchronous wheel (314) to rotate. Through the transmission of the synchronous belt, the transmission synchronous wheel (315) drives the connecting rod (312) and the rotating plate (307) to rotate. The rotating plate (307) drives the stirring rod (308) to rotate. Through the meshing of the fixed gear (309) and the transmission gear ring (310), the stirring rod (308) rotates while rotating, stirring the water in the boiler body (1) and increasing the water flow, thereby uniformly heating the water. Through the movement of the scraper (305), the scale on the inner wall of the boiler body (1) can be cleaned. S3. Scale transfer: After cleaning the scale on the inner wall of the boiler body (1) with the scraper (305), the scale is moved by the scraper (305). The transfer motor (502) is turned on, and the transfer motor (502) drives the transfer synchronous wheel (503) to rotate. Through the transmission of the synchronous belt, the rotating synchronous wheel (504) rotates and drives the transfer roller (505) to rotate, so as to transfer the scale out of the boiler body (1).

Images