Boiler tail flue gas heat utilization device

Abstract

The invention discloses a boiler tail flue gas heat utilization device, and relates to the technical field of flue gas heat utilization. The boiler tail flue gas heat utilization device comprises a flue gas passing bin, a boiler water supplementing bin is assembled on the top of the flue gas passing bin by arranging a partition plate, a dust collecting bin is assembled at the bottom of the flue gas passing bin, and a heat transfer plate is assembled between the flue gas passing bin and the boiler water supplementing bin. A fixing base is assembled in the smoke passing bin, and a reciprocating lead screw driven by a servo motor is rotationally connected into the fixing base. According to the boiler tail flue gas heat utilization device, flue gas is introduced into a flue gas passing bin, water to be heated is injected into a boiler water supplementing bin, two servo motors are started to drive a reciprocating lead screw and a stirring rod to rotate correspondingly, and a hydraulic bin, a stress rod, a gear ring, a first spring, a first gear, a rotating rod, a first bevel gear, a second bevel gear and a turning plate are matched; and the heat conduction efficiency of the device can be improved.

Description

Technical Field

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

[0002] The boiler tail flue gas heat utilization device mainly involves the exhaust gas generated by the boiler during the combustion process, especially the heat recovery and utilization of the tail flue gas. During the boiler combustion process, the fuel releases heat through the combustion reaction and is converted into steam or hot water for production processes, heating or power generation. However, after the boiler is burned, the exhaust gas discharged is usually at a high temperature, which contains a large amount of heat that is not fully utilized. If this part of heat cannot be effectively recovered, it will not only waste energy, but also pollute the environment.

[0003] The Chinese patent CN104713075B authorized and announced on May 18, 2016 discloses an integrated device and method for recycling waste heat, reducing emissions, and removing ash from coal-fired flue gas, wherein the box is divided into upper and lower spaces by a horizontal partition, the upper part is a cold fluid circulation space, i.e., a boiler water supply circulation space; the lower part is a hot fluid circulation space, i.e., a flue gas circulation space; and a plurality of heat transfer tubes passing through the partition are vertically arranged in the shell, the upper end of the heat transfer tube is located in the cold fluid circulation space, and the lower end of the heat transfer tube is located in the hot fluid circulation space, and the heat transfer tube transfers the heat in the flue gas to the boiler water supply, and the boiler water supply temperature is increased and then sent to the boiler, so as to realize the recycling of waste heat from the flue gas. In the above application documents, by using multiple heat transfer tubes, the heat of the flue gas is transferred to the water in the box, and the water in the box is in a relatively static state during heat conduction, so that the efficiency of heat conduction of the device is relatively low. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a device for utilizing heat from flue gas at the tail of a boiler, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical solutions: a device for utilizing heat from flue gas at the tail of a boiler, comprising a flue gas passage bin, the top of the flue gas passage bin is equipped with a boiler water replenishment bin by setting a partition, the bottom of the flue gas passage bin is equipped with a dust collection bin, a heat transfer plate is installed between the flue gas passage bin and the boiler water replenishment bin, a fixed seat is installed inside the flue gas passage bin, a reciprocating screw driven by a servo motor is rotatably connected inside the fixed seat, a sliding block is connected to the outside of the reciprocating screw by setting a thread, and a cleaning plate is rotatably connected to the side of the sliding block; The boiler water replenishment tank is provided with a water supply heating assembly inside, and the water supply heating assembly includes a hydraulic tank, and the flue gas passes through the tank and is equipped with a stirring rod driven by a servo motor. One end of the hydraulic tank is slidably connected to a force rod, and the other end of the hydraulic tank is slidably connected to a gear ring. The bottom of the force rod is equipped with a spring 1, and the inside of the stirring rod is rotatably connected to a gear 1 and a rotating rod respectively. The bottom of the gear 1 is transmission-connected to a bevel gear 1, and the side of the rotating rod is fixedly connected to a bevel gear 2, and the outer side of the rotating rod is fixedly connected to a flip plate. By setting the water supply heating assembly, the heat conduction efficiency of the device can be improved.

[0005] Preferably, the sliding block is located inside the fixing seat and is in a sliding connection with the fixing seat.

[0006] Preferably, one end of the spring away from the force-bearing rod is mounted on the inner wall of the hydraulic compartment.

[0007] Preferably, when the water heating assembly is activated, the gear 1 is meshed with the ring gear.

[0008] Preferably, the bevel gear 2 is located on the side of the bevel gear 1 and is in meshing state with the bevel gear 1.

[0009] Preferably, a cleaning assembly is provided inside the smoke chamber, the cleaning assembly includes a gear rod, a disc is fixedly connected to the outside of the cleaning plate, the outside of the disc is rotatably connected to teeth by a torsion spring block, a placement slot 1 is provided inside the cleaning plate, an iron block is installed inside the placement slot 1, and a magnetic block is installed inside the smoke chamber. By setting the cleaning assembly, the two ends of the cleaning plate can clean the surface of the heat transfer plate in turn, thereby improving the cleaning effect of the device.

[0010] Preferably, the gear rod is located at a side position of the fixing seat and is in a fixed state with the fixing seat.

[0011] Preferably, a vibration assembly is provided inside the dust collection bin, and the vibration assembly includes a rotating rod, a sprocket wheel 1 is fixedly connected to the outer side of the reciprocating screw rod, a chain is installed on the outer side of the sprocket wheel 1, a sprocket wheel 2 is fixedly connected to the outer side of the rotating rod, a cam is fixedly connected to the outer side of the rotating rod, a placement slot 2 is provided inside the cam, and a gravity block is installed inside the placement slot 2. By setting the vibration assembly, the dust collection bin can generate secondary vibration, and the collected dust in the dust collection bin is sorted due to the vibration, thereby improving the collection efficiency of the dust collection bin.

[0012] Preferably, the rotating rod is located inside the dust collecting bin and is rotationally connected to the dust collecting bin.

[0013] Preferably, one end of the chain away from the sprocket one is assembled on the outer side of the sprocket two.

[0014] The present invention provides a boiler tail flue gas heat utilization device, which has the following beneficial effects: (1) The heat utilization device for flue gas at the tail end of the boiler introduces flue gas into the flue gas passage chamber, injects water to be heated into the boiler water supply chamber, starts two servo motors, respectively drives the reciprocating screw and the stirring rod to rotate, cooperates with the hydraulic chamber, the force rod, the gear ring, the spring 1, the gear 1, the rotating rod, the bevel gear 1, the bevel gear 2 and the flip plate, so as to improve the heat conduction efficiency of the device.

[0015] (2) In the boiler tail flue gas heat utilization device, the sliding block moves back and forth in the vertical direction, which can drive the cleaning plate to move back and forth in the vertical direction. In conjunction with the gear rod, disc, torsion spring block, teeth, placement groove 1, iron block and magnetic block, the two ends of the cleaning plate can clean the surface of the heat transfer plate in turn, thereby improving the cleaning effect of the device.

[0016] (3) The boiler tail flue gas heat utilization device, when the reciprocating screw is rotated, cooperates with the rotating rod, sprocket one, chain, sprocket two, cam, placement groove two and gravity block to make the dust collection bin generate secondary vibration, and the collected dust in the dust collection bin is sorted due to the vibration, thereby improving the collection efficiency of the dust collection bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the water heating assembly of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7It is a schematic diagram of the three-dimensional structure of the vibration component of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C in the middle.

[0019] In the figure: 100, smoke passing chamber; 200, boiler water supply chamber; 300, dust collecting chamber; 400, heat transfer plate; 500, fixed seat; 600, reciprocating screw rod; 700, sliding block; 800, cleaning plate; 900, water heating assembly; 901, hydraulic chamber; 902, stirring rod; 903, force rod; 904, gear ring; 905, spring 1; 906, gear 1; 907, rotating rod; 908, bevel gear 1; 909, bevel gear 2; 910, flip plate; 1000, cleaning assembly; 1001, gear rod; 1002, disc; 1003, torsion spring block; 1004, tooth; 1005, placement slot 1; 1006, iron block; 1007, magnetic block; 1100, vibration assembly; 1101, rotating rod; 1102, sprocket one; 1103, chain; 1104, sprocket two; 1105, cam; 1106, placement slot two; 1107, gravity block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] For example, see Figure 1-Figure 4 A device for utilizing heat from flue gas at the tail end of a boiler comprises a flue gas passage chamber 100, a boiler water supply chamber 200 is provided on the top of the flue gas passage chamber 100 by setting a partition, a dust collection chamber 300 is provided on the bottom of the flue gas passage chamber 100, a heat transfer plate 400 is provided between the flue gas passage chamber 100 and the boiler water supply chamber 200, a fixed seat 500 is provided inside the flue gas passage chamber 100, a reciprocating screw rod 600 driven by a servo motor is rotatably connected inside the fixed seat 500, a sliding block 700 is connected to the outer side of the reciprocating screw rod 600 by setting a thread, the sliding block 700 is located inside the fixed seat 500, and is in a sliding connection state with the fixed seat 500, and a cleaning plate 800 is rotatably connected to the side of the sliding block 700; A feedwater heating assembly 900 is provided inside the boiler water supply tank 200, and the feedwater heating assembly 900 includes a hydraulic tank 901. A stirring rod 902 driven by a servo motor is installed inside the smoke passage tank 100. Smoke is introduced into the smoke passage tank 100, and water to be heated is injected into the boiler water supply tank 200. Two servo motors are started to drive the reciprocating screw 600 and the stirring rod 902 to rotate respectively. The sliding block 700 threadedly assembled on the reciprocating screw 600 is restricted by the fixed seat 500, so that it reciprocates in the vertical direction, so that the sliding block 700 drives the cleaning plate 800 rotatably connected thereto to move, and performs a preliminary cleaning operation on the heat transfer plate 400.

[0022] One end of the hydraulic chamber 901 is slidably connected to a force-bearing rod 903, and the other end of the hydraulic chamber 901 is slidably connected to a gear ring 904. A spring 905 is installed at the bottom of the force-bearing rod 903. The end of the spring 905 is away from the force-bearing rod 903 and is installed on the inner wall of the hydraulic chamber 901. The inside of the stirring rod 902 is rotatably connected to a gear 906 and a rotating rod 907. When the water heating component 900 is enabled, the gear 906 is meshed with the gear ring 904. When the sliding block 700 moves downward, it can squeeze the force-bearing rod 903 and drive the force-bearing rod 903 to move downward, cooperate with the hydraulic chamber 901 that is slidably connected to the force-bearing rod 903, so that the pressure in the hydraulic chamber 901 increases, and drives the ring gear 904 that is slidably connected to the hydraulic chamber 901 to move sideways, and the ring gear 904 immediately moves to a position where it meshes with gear 1 906. Because gear 1 906 revolves with the stirring rod 902 at this time, gear 1 906 rotates under the action of the ring gear 904.

[0023] The bottom of gear 1 906 is transmission-connected with bevel gear 1 908, and the side of rotating rod 907 is fixedly connected with bevel gear 2 909. Bevel gear 2 909 is located on the side of bevel gear 1 908 and is in meshing state with bevel gear 1 908. The outer side of rotating rod 907 is fixedly connected with a flip plate 910. When the gear 1 906 rotates, it can drive the bevel gear 1 908 connected to it to rotate, so that the bevel gear 1 908 drives the bevel gear 2 909 meshing with it to rotate, and the bevel gear 2 909 drives the rotating rod 907 fixedly connected to it to rotate, so that the rotating rod 907 drives the flip plate 910 fixedly connected to it to rotate, and the water near the bottom side in the boiler water supply tank 200 is flipped upward; when the sliding block 700 moves upward, the force rod 903 loses its restriction and resets under the action of the spring 1 905. Similarly, the gear ring 904 resets, so that the flip plate 910 stops rotating, so that the flip plate 910 can intermittently flip the water in the boiler water supply tank 200. Improve the heat conduction efficiency of the device.

[0024] When in use, flue gas is introduced into the flue gas passage chamber 100, water to be heated is injected into the boiler water supply chamber 200, and two servo motors are started to drive the reciprocating screw 600 and the stirring rod 902 to rotate respectively. The sliding block 700, which is threadedly assembled on the reciprocating screw 600, is restricted by the fixed seat 500 and thus reciprocates in the vertical direction, so that the sliding block 700 drives the cleaning plate 800, which is rotatably connected to it, to move, and perform a preliminary cleaning operation on the heat transfer plate 400; when the sliding block 700 moves downward, it can squeeze the force-bearing rod 903 and drive the force-bearing rod 903 to move downward, and cooperate with the hydraulic chamber 901 slidably connected to the force-bearing rod 903, so that the pressure in the hydraulic chamber 901 increases, driving the gear ring 904, which is slidably connected to the hydraulic chamber 901, to move sideways, and the gear ring 904 then moves to a position meshing with the gear 1 906. , and because gear 1 906 revolves with the stirring rod 902 at this time, gear 1 906 rotates under the action of the ring gear 904, and gear 1 906 drives the bevel gear 1 908 connected to it to rotate, so that the bevel gear 1 908 drives the bevel gear 2 909 meshing with it to rotate, and the bevel gear 2 909 drives the rotating rod 907 fixedly connected to it to rotate, so that the rotating rod 907 drives the flip plate 910 fixedly connected to it to rotate, and the water near the bottom side in the boiler water supply tank 200 is flipped upward; when the sliding block 700 moves upward, the force-bearing rod 903 loses its restriction and is reset under the action of the spring 1 905. Similarly, the ring gear 904 is reset, so that the flip plate 910 stops rotating. In this way, the flip plate 910 can intermittently flip the water in the boiler water supply tank 200.

[0025] For example 2, please refer to Figure 1-Figure 6On the basis of the first embodiment, a cleaning assembly 1000 is arranged inside the smoke passage bin 100, and the cleaning assembly 1000 includes a gear rod 1001, which is located at the side of the fixed seat 500 and is fixed to the fixed seat 500. A disc 1002 is fixedly connected to the outer side of the cleaning plate 800, and the outer side of the disc 1002 is rotatably connected to a tooth 1004 by setting a torsion spring block 1003. When the sliding block 700 reciprocates in the vertical direction, it can drive the cleaning plate 800 connected to it to reciprocate in the vertical direction. When the cleaning plate 800 moves downward to the gear rod 1001, the teeth 1004 immediately move to the gear rod 1001 and are squeezed by the gear rod 1001. At this time, because the teeth 1004 are not restricted by the disc 1002, the teeth 1004 rotate with the torsion spring block 1003 as the axis, thereby avoiding the gear rod 1001, so that the disc 1002 does not rotate in this case. After the cleaning plate 800 passes over the gear rod 1001 downward, when the cleaning plate 800 moves upward, the teeth 1004 are squeezed by the gear rod 1001 as the cleaning plate 800 moves to the gear rod 1001. At this time, because the teeth 1004 are restricted by the disc 1002, they cannot rotate around the torsion spring block 1003 as the axis, so that the disc 1002 engages with the gear rod 1001 through the teeth 1004. As the cleaning plate 800 moves upward, the disc 1002 can rotate under the action of the gear rod 1001.

[0026] A placement groove 1005 is provided inside the cleaning plate 800, and an iron block 1006 is installed inside the placement groove 1005. A magnetic block 1007 is installed inside the smoke passage chamber 100. When the disc 1002 rotates, the disc 1002 drives the cleaning plate 800 fixed thereto to rotate 180 degrees, and the placement groove 1005 provided inside the cleaning plate 800 rotates together with it. The iron block 1006 in the placement groove 1005 then moves to the other side under the action of the magnetic block 1007. The magnetic block 1007 and the iron block 1006 attract each other, and the cleaning plate 800 can be maintained in a relatively stable state; in this way, when the sliding block 700 performs a reciprocating movement, the cleaning plate 800 can be replaced to the other side to clean the surface of the heat transfer plate 400. In this way, the two ends of the cleaning plate 800 can clean the surface of the heat transfer plate 400 in turn, thereby improving the cleaning effect of the device.

[0027] When in use, on the basis of the first embodiment, the sliding block 700 reciprocates in the vertical direction, which can drive the cleaning plate 800 rotatably connected thereto to reciprocate in the vertical direction, and when the cleaning plate 800 moves downward to the toothed rod 1001, the teeth 1004 immediately move to the toothed rod 1001 and are squeezed by the toothed rod 1001. At this time, because the teeth 1004 are not restricted by the disc 1002, the teeth 1004 rotate with the torsion spring block 1003 as the axis, thereby avoiding the toothed rod 1001, so that the disc 1002 does not rotate in this case; and when the cleaning plate 800 passes over the toothed rod 1001 downward, when the cleaning plate 800 moves upward, the teeth 1004 moves to the toothed rod 1001 with the cleaning plate 800, and the teeth 1004 are squeezed by the toothed rod 1001. At this time, because the teeth 1004 are squeezed by the disc Due to the limitation of disk 1002, it is impossible to rotate around torsion spring block 1003 as the axis, so that disk 1002 meshes with gear rod 1001 through teeth 1004. As cleaning plate 800 moves upward, disk 1002 can rotate under the action of gear rod 1001, so that disk 1002 drives cleaning plate 800 fixedly connected thereto to rotate 180 degrees, and placement slot 1005 provided in cleaning plate 800 rotates therewith, and iron block 1006 in placement slot 1005 moves to the other side under the action of magnetic block 1007. Magnetic block 1007 and iron block 1006 attract each other, so that cleaning plate 800 can be maintained in a relatively stable state. In this way, when sliding block 700 makes a reciprocating movement, cleaning plate 800 can be replaced to the other side to clean the surface of heat transfer plate 400.

[0028] For example 3, please refer to Figure 1-Figure 8 On the basis of the first and second embodiments, a vibration assembly 1100 is provided inside the dust collection bin 300, and the vibration assembly 1100 includes a rotating rod 1101, which is located inside the dust collection bin 300 and is in a rotational connection with the dust collection bin 300. A sprocket wheel 1102 is fixedly connected to the outside of the reciprocating screw rod 600, a chain 1103 is installed on the outside of the sprocket wheel 1102, and a sprocket wheel 2 1104 is fixedly connected to the outside of the rotating rod 1101. One end of the chain 1103 is away from the sprocket wheel 1102 and is installed on the outside of the sprocket wheel 2 1104. When the reciprocating screw rod 600 rotates, the sprocket wheel 1102 fixedly connected thereto can be driven to rotate, and the chain 1103 installed on the outside of the sprocket wheel 1102 can be matched to rotate the sprocket wheel 2 1104 that is connected to the sprocket wheel 1102 through the chain 1103.

[0029] The outer side of the rotating rod 1101 is fixedly connected with a cam 1105, and a second placement groove 1106 is provided inside the cam 1105, and a gravity block 1107 is installed inside the second placement groove 1106. When the second sprocket wheel 1104 rotates, the rotating rod 1101 fixedly connected thereto can be driven to rotate, so that the rotating rod 1101 drives the cam 1105 fixedly connected thereto to rotate, and during the rotation of the cam 1105, when the protruding part of the cam 1105 rotates to the inner wall of the dust collection bin 300, the dust collection bin 300 can be knocked and vibrated to a certain extent; and when the protruding part of the cam 1105 slows down due to knocking the inner wall of the dust collection bin 300, the gravity block 1107 located in the cam 1105 can move under the action of inertia, thereby knocking the inner wall of the second placement groove 1106, and the dust collection bin 300 is knocked twice through the second placement groove 1106 and the cam 1105, so that the dust collection bin 300 is vibrated twice. The collected dust in the dust collecting bin 300 is arranged due to vibration, thereby improving the collection efficiency of the dust collecting bin 300 .

[0030] When in use, on the basis of the first and second embodiments, when the reciprocating screw rod 600 rotates, it can drive the sprocket wheel 1102 fixedly connected thereto to rotate, and cooperate with the chain 1103 assembled on the outside of the sprocket wheel 1102, so that the sprocket wheel 2 1104 connected to the sprocket wheel 1 1102 through the chain 1103 rotates, and the sprocket wheel 2 1104 drives the rotating rod 1101 fixedly connected thereto to rotate, so that the rotating rod 1101 drives the cam 1105 fixedly connected thereto to rotate, and the cam 1105 rotates. During the process, when the protruding part of the cam 1105 rotates to the inner wall of the dust collecting bin 300, it can knock on the dust collecting bin 300 and cause it to vibrate to a certain extent; and when the protruding part of the cam 1105 slows down its movement speed due to knocking on the inner wall of the dust collecting bin 300, the gravity block 1107 located in the cam 1105 can move under the action of inertia, thereby knocking on the inner wall of the placement slot 1106, and knocking on the dust collecting bin 300 for the second time through the placement slot 1106 and the cam 1105, causing the dust collecting bin 300 to vibrate for the second time.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A boiler tail flue gas heat utilization device, comprising a flue gas passage bin (100), a boiler water replenishment bin (200) being installed on the top of the flue gas passage bin (100) by means of a partition, a dust collection bin (300) being installed on the bottom of the flue gas passage bin (100), a heat transfer plate (400) being installed between the flue gas passage bin (100) and the boiler water replenishment bin (200), a fixing seat (500) being installed inside the flue gas passage bin (100), a reciprocating screw (600) being rotatably connected to the inside of the fixing seat (500) and being driven by a servo motor, a sliding block (700) being connected to the outside of the reciprocating screw (600) by means of a thread, and a cleaning plate (800) being rotatably connected to the side of the sliding block (700); Features: A feedwater heating assembly (900) is arranged inside the boiler water replenishment tank (200), and the feedwater heating assembly (900) comprises a hydraulic tank (901). A stirring rod (902) driven by a servo motor is arranged inside the smoke passage tank (100). A force-bearing rod (903) is slidably connected to one end of the hydraulic tank (901), and a gear ring (904) is slidably connected to the other end of the hydraulic tank (901). A spring 1 (905) is arranged at the bottom of the force-bearing rod (903). A gear 1 (906) and a rotating rod (907) are rotatably connected inside the stirring rod (902), respectively. The bottom of the gear 1 (906) is transmission-connected to a bevel gear 1 (908). A bevel gear 2 (909) is fixedly connected to the side of the rotating rod (907), and a flip plate (910) is fixedly connected to the outer side of the rotating rod (907).

2. A boiler tail flue gas heat utilization device according to claim 1, characterized in that: The sliding block (700) is located inside the fixing seat (500) and is in a sliding connection with the fixing seat (500).

3. A boiler tail flue gas heat utilization device according to claim 1, characterized in that: One end of the spring 1 (905) away from the force-bearing rod (903) is mounted on the inner wall of the hydraulic chamber (901).

4. A boiler tail flue gas heat utilization device according to claim 1, characterized in that: When the feedwater heating component (900) is activated, the gear 1 (906) meshes with the ring gear (904).

5. The boiler tail flue gas heat utilization device according to claim 1, characterized in that: The bevel gear 2 (909) is located on the side of the bevel gear 1 (908) and is in meshing state with the bevel gear 1 (908).

6. The boiler tail flue gas heat utilization device according to claim 1, characterized in that: A cleaning assembly (1000) is arranged inside the smoke passage bin (100), and the cleaning assembly (1000) comprises a gear rod (1001); a disc (1002) is fixedly connected to the outside of the cleaning plate (800); the outside of the disc (1002) is rotatably connected to teeth (1004) by means of a torsion spring block (1003); a placement groove (1005) is provided inside the cleaning plate (800); an iron block (1006) is installed inside the placement groove (1005); and a magnetic block (1007) is installed inside the smoke passage bin (100).

7. A boiler tail flue gas heat utilization device according to claim 6, characterized in that: The gear rod (1001) is located on the side of the fixing seat (500) and is in a fixed state with the fixing seat (500).

8. The boiler tail flue gas heat utilization device according to claim 1, characterized in that: A vibration assembly (1100) is arranged inside the dust collection bin (300), and the vibration assembly (1100) comprises a rotating rod (1101); a sprocket wheel one (1102) is fixedly connected to the outer side of the reciprocating screw rod (600); a chain (1103) is mounted on the outer side of the sprocket wheel one (1102); a sprocket wheel two (1104) is fixedly connected to the outer side of the rotating rod (1101); a cam (1105) is fixedly connected to the outer side of the rotating rod (1101); a placement groove two (1106) is provided inside the cam (1105); and a gravity block (1107) is mounted inside the placement groove two (1106).

9. A boiler tail flue gas heat utilization device according to claim 8, characterized in that: The rotating rod (1101) is located inside the dust collection bin (300) and is in a rotationally connected state with the dust collection bin (300).

10. The boiler tail flue gas heat utilization device according to claim 8, characterized in that: One end of the chain (1103) away from the sprocket one (1102) is assembled at an outer position of the sprocket two (1104).

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