Environment-friendly flue gas waste heat recycling boiler
The automated detection and fastening system solved the problem of leak detection and maintenance of the boiler flue gas waste heat recovery device, realizing automated sealing and cleaning without human intervention, and improving the stability of equipment operation and energy utilization efficiency.
Patent Information
- Application Number
- CN202511522370.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-01-16
AI Technical Summary
Existing boiler flue gas waste heat recovery devices suffer from problems such as the need for manual shutdown and dismantling for leak repairs, which is time-consuming, labor-intensive, and prone to damaging equipment. Furthermore, leaks lead to energy waste and environmental pollution.
An automated detection and tightening system is adopted, which uses infrared temperature sensors and laser sensors to detect leaks and loose bolts. An electric torque wrench and a mini electric telescopic rod achieve automatic tightening. A backup sealing structure and a magnetic strip plate provide secondary sealing to ensure sealing effect.
It achieves automated sealing and cleaning without human intervention, improves the efficiency of flue gas waste heat recovery, reduces equipment downtime and environmental pollution, and ensures stable equipment operation.
Smart Images
Figure CN121346264A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of heat recovery, and in particular relates to an environmentally friendly flue gas waste heat recovery boiler. BACKGROUND
[0002] In industrial production, as the core heat energy equipment, the boiler will generate a large amount of flue gas containing waste heat during operation. At present, although most boilers are equipped with basic waste heat recovery devices, there are two key problems in actual application: first, the flue gas waste heat recovery efficiency is limited, and a large amount of heat energy is directly discharged with the flue gas, causing energy waste and not meeting environmental protection requirements; second, the connection part between the outlet pipe of the waste heat recovery device and the exhaust structure is prone to fastener loosening and sealing ring aging due to high temperature vibration, causing flue gas leakage.
[0003] The existing leakage repair technology needs manual shutdown and disassembly for troubleshooting, which not only consumes manpower and time, causes production capacity loss, but also may damage parts or cause new leakage due to improper operation. At the same time, the leaked flue gas will pollute the environment and increase energy consumption, which is difficult to meet the needs of efficient, environmentally friendly and stable operation of industrial equipment, so it is urgent to optimize the flue gas waste heat recovery and leakage prevention and control technology. The existing technology cannot automatically distinguish whether the leakage is caused by fastener loosening due to high temperature vibration or sealing ring aging failure in the leakage repair of flue gas treatment or waste heat recovery equipment, and can only manually stop the flange and protective cover for troubleshooting. This not only consumes manpower and time, but also causes key equipment downtime, resulting in production capacity and economic losses; and manual operation is prone to damage the sealing surface and fastener, and may cause new leakage if the reassembly is not thorough or the torque is uneven, affecting the stability of the equipment.
[0004] Therefore, we propose an environmentally friendly flue gas waste heat recovery boiler to solve the above problems. SUMMARY
[0005] In view of the problem that the existing technology requires manual shutdown and disassembly for troubleshooting leakage, the purpose of the present application is to provide an environmentally friendly flue gas waste heat recovery boiler.
[0006] In order to solve the above problems, the technical scheme adopted by the present application is as follows: a heat recovery device is provided, one end of the heat recovery device is provided with an outlet pipe, one end of the outlet pipe is provided with an exhaust structure, the outer wall of one end of the outlet pipe is fixedly sleeved with a conical plate, the outer wall of the exhaust structure is rotatably connected with a moving structure, the top of the moving structure is provided with a detection structure, the top of the moving structure is provided with a fastening structure, the inner wall of the bottom of the exhaust structure is provided with a backup sealing structure, the bottom of the backup sealing structure is provided with a cleaning structure, the inner cavity of the bottom of the exhaust structure is provided with an emergency structure, the frame of the bottom of the emergency structure is provided with a limiting structure, the four edges of the inner cavity wall of the exhaust structure are provided with an electromagnetic lock, and one end of the electromagnetic lock is inserted into the clamping groove of the emergency structure.
[0007] Further, one end of the air outlet pipe is fixedly connected with a first flange plate, a plurality of limiting grooves are formed in the bottom of the first flange plate, nuts are fixedly connected to the inner side of the limiting grooves, and a standby groove is formed in the bottom of the air outlet pipe.
[0008] Further, the exhaust structure comprises an exhaust pipe, a second flange plate is fixedly connected to the bottom of the exhaust pipe, a bolt is sleeved on the inner side of the second flange plate, and a heat-resistant sealing ring is arranged on the bottom of the exhaust pipe.
[0009] Further, a fixing table is sleeved on the side of the exhaust pipe, a plurality of positioning caps are rotatably connected to the inner side of the top of the fixing table, the positioning caps are located on the upper surface of the bolt, a positioning groove is formed in the top of the positioning cap, a butt joint groove is formed in the bottom of the positioning cap, a protective ring is fixedly connected to the side wall of the fixing table, a position adjusting tooth block is arranged on the inner side wall of the protective ring, a sealing adjusting cap is rotatably connected to the inner side of the bottom of the fixing table, and a plurality of tooth blocks are arranged on the side wall of the bottom of the sealing adjusting cap.
[0010] Further, the moving structure comprises a moving table, the inner side wall of the moving table is rotatably connected with the side wall of the moving structure, an adjusting motor is installed on the top of the moving table, a position adjusting gear is installed on the transmission end of the bottom of the adjusting motor, and the outer wall of the position adjusting gear is engaged with the outer wall of the position adjusting tooth block.
[0011] Further, the fastening structure comprises an electric torque wrench, a limiting cover is installed on the bottom of the electric torque wrench, a driving block is installed on the output end of the electric torque wrench, a plurality of micro electric telescopic rods are installed on the inner cavity wall of the limiting cover, a pushing disc is installed on one end of the bottom of the micro electric telescopic rods, a limiting frame is rotatably connected to the middle part of the pushing disc, the inner cavity of the limiting frame is slidably connected with the side wall of the driving block, and an insertion block is installed on the bottom of the limiting frame.
[0012] Further, a transmission groove is formed in the inner part of the second flange plate, one end of the bottom of the sealing adjusting cap is rotatably connected with the bottom of the transmission groove, and a threaded groove is formed in the inner part of the second flange plate.
[0013] Further, a large gear is threadedly connected to the threaded groove inner cavity wall, a heat-resistant hollow sealing ring is installed on the bottom of the large gear, a chain is engaged with the side wall of the bottom of the sealing adjusting cap, a double gear is engaged with the inner side of the chain, the side wall of the double gear is engaged with the side wall of the large gear, and the cleaning structure comprises a ring plate installed on the bottom of the heat-resistant hollow sealing ring, and a brush is installed on the side wall of the ring plate.
[0014] Further, the emergency structure comprises a boost spring mounted at the bottom of the fixed platform, a magnetic strip plate is mounted at the bottom of the boost spring, a folding sealing sleeve is mounted at the top of the magnetic strip plate, the folding sealing sleeve is located at the inner side of the boost spring, the top of the folding sealing sleeve is mounted with the bottom of the fixed platform, and the four edges of the side wall of the magnetic strip plate are mounted with limiting frames.
[0015] Further, the limiting structure comprises limiting rings mounted at the four edges of the magnetic strip plate, limiting rods are slidably connected to the inner side of the limiting rings, and the top of the limiting rods is mounted with the bottom of the fixed platform.
[0016] Compared with the prior art, the present application has the following beneficial effects: 1. When the infrared temperature sensor determines that the flue gas leaks and the laser sensor detects that the bolt is loose, the adjusting motor drives the moving platform to accurately move the electric torque wrench above the loose bolt. The miniature electric telescopic rod pushes the insert block into the positioning cap, and the electric torque wrench immediately drives the bolt to be tightened, solving the problem of loose leakage; if it still leaks after tightening, the moving structure starts the standby sealing structure for secondary sealing.
[0017] 2. The moving structure first moves the fastening structure above the sealing adjustment cap, the miniature electric telescopic rod pushes the insert block into the electric torque wrench, and the sealing adjustment cap rotates through the transmission of the tooth block, chain and double gear, prompting the large gear to rotate and descend in the thread groove; in the process, the brush at the bottom of the heat-resistant hollow sealing ring will first clean the inner wall of the standby groove to avoid impurities affecting the sealing; after the ring plate contacts the standby groove, the large gear continues to rotate and extrudes the heat-resistant hollow sealing ring, so that it expands to the two sides and tightly fits with the standby groove, finally realizing reliable sealing. The whole process does not need manual intervention and is automatically completed, which not only ensures the sealing effect, but also improves the leakage treatment efficiency.
[0018] 3. By controlling the electromagnetic lock to be unlocked, the magnetic strip plate descends under the action of the boost spring, the limiting ring slides along the limiting rod to ensure stability, and finally is adsorbed on the conical plate of the exhaust pipe, while the folding sealing sleeve expands to form a seal. This design provides the last guarantee for leakage problems, avoids flue gas leakage due to failure of conventional structures, further improves the safety and reliability of equipment operation, and ensures no leakage risk. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the exhaust pipe structure of the present application; Figure 3 It is a schematic diagram of the exhaust pipe structure of the present application; Figure 4 It is a schematic diagram of the exhaust pipe structure of the present application; Figure 3 Figure 5 It is a perspective structural schematic diagram of the electric torque wrench of the present application; Figure 6 It is a perspective structural schematic diagram of the electric torque wrench of the application; Figure 7 It is a perspective structural schematic diagram of the fixed table of the present application; Figure 8 It is a perspective structural schematic diagram of the sealing adjustment cap of the present application; Figure 9 It is Figure 8 It is a perspective structural schematic diagram of the enlarged B of the present application; Figure 10 It is a perspective structural schematic diagram of the No. 2 flange plate of the present application; Figure 11 It is Figure 10 It is a perspective structural schematic diagram of the enlarged C of the present application; Figure 12 It is a perspective structural schematic diagram of the folding sealing sleeve of the present application; Figure 13 It is a perspective structural schematic diagram of the air outlet pipe of the present application; Figure 14 It is a perspective structural schematic diagram of the air outlet pipe of the present application.
[0020] In the figure: 1, heat recovery device; 11, air outlet pipe; 111, conical plate; 112, limiting groove; 113, nut; 114, No. 1 flange plate; 115, standby groove; 2, exhaust structure; 21, exhaust pipeline; 22, No. 2 flange plate; 221, transmission groove; 222, threaded groove; 23, bolt; 24, positioning cap; 241, positioning groove; 242, butt joint groove; 25, fixed table; 26, protective ring; 27, positioning tooth block; 28, sealing adjustment cap; 29, heat-resistant sealing ring; 3, moving structure; 31, moving table; 32, adjustment motor; 33, positioning gear; 4, detection structure; 41, infrared temperature sensor; 42, laser sensor; 5, fastening structure; 51, electric torque wrench; 52, driving block; 53, miniature electric telescopic rod; 54, push disc; 55, limiting frame; 56, plug-in block; 57, limiting cover; 6, standby sealing structure; 61, heat-resistant hollow sealing ring; 62, large gear; 63, double gear; 64, chain; 7, cleaning structure; 71, ring plate; 72, brush; 8, emergency structure; 81, folding sealing sleeve; 82, magnetically attracted belt plate; 83, boost spring; 84, limiting frame; 9, electromagnetic lock; 10, limiting structure; 101, limiting ring; 102, limiting rod. DETAILED DESCRIPTION
[0021] The present application will be further described below in combination with specific embodiments.
[0022] In order to solve the problem of flue gas leakage of the air outlet pipe 11 and the exhaust structure 2, likeFigure 1 Figure 4 As shown: including heat recovery device 1, when the flue gas with waste heat into the heat recovery device 1 inside, waste heat can heat the water pipe inside the heat recovery device 1, realize the recovery of heat, one end of heat recovery device 1 is equipped with the exhaust pipe 11, one end of exhaust pipe 11 is equipped with exhaust structure 2, the outer wall of one end of exhaust pipe 11 is fixedly sleeved with the tapered plate 111, when the heat recovery is completed, the flue gas is transported to other equipment through the exhaust pipe 11 and the exhaust structure 2, the exhaust structure 2 is connected with the exhaust pipe 11 through the fastener, the outer wall of exhaust structure 2 is rotatably connected with the moving structure 3, the moving structure 3 is provided with detection structure 4 at the top, detection structure 4 can judge whether there is gas leakage at the connecting part of exhaust structure 2 and exhaust pipe 11, detection structure 4 is driven to rotate through moving structure 3, realizing the omnibearing circulation detection of the connecting part of exhaust structure 2 and exhaust pipe 11, the top of moving structure 3 is equipped with fastening structure 5, the inner wall of the bottom of exhaust structure 2 is provided with spare sealing structure 6, the bottom of spare sealing structure 6 is equipped with cleaning structure 7 Specifically, case 1: when the value of detection structure 4 is abnormal, it is judged that there is flue gas leakage, and the fastener is loose, at this time, the moving structure 3 is controlled to move, the fastening structure 5 is rotated to the upper side of the loose fastener of exhaust structure 2, then the fastening structure 5 is started to insert into the fastener of exhaust structure 2, and then the fastening structure 5 is started to tighten the fastener of exhaust structure 2, so as to solve the problem of flue gas leakage caused by loose fastener, at this time, after tightening, the flue gas leakage can still be detected, at this time, the spare sealing structure 6 is controlled to spare sealing through the moving structure 3, so as to avoid the flue gas leakage.
[0023] Case 2: when the value of detection structure 4 is abnormal, it is judged that there is flue gas leakage, but the fastener is not loose, at this time, the spare sealing structure 6 is controlled to spare sealing through the moving structure 3, so as to avoid the flue gas leakage.
[0024] In order to solve the problem of loose bolt 23 and nut 113 or failure of heat-resistant sealing ring 29, like Figure 2 Figure 11 , Figure 13 and Figure 14 As shown: one end of the exhaust pipe 11 is fixedly connected with a number of flange plate 114, the bottom of the flange plate 114 is provided with a plurality of limiting groove 112, the inner side of the limiting groove 112 is fixedly connected with nut 113, the bottom of the exhaust pipe 11 is provided with a standby groove 115, the exhaust structure 2 includes exhaust duct 21, the bottom of the exhaust duct 21 is fixedly connected with the second flange plate 22, the inner side of the second flange plate 22 is sleeved with bolt 23, the bottom of the exhaust duct 21 is provided with heat sealing ring 29, by rotating the bolt 23 and the nut 113 is screwed, the connection of the first flange plate 114 and the second flange plate 22 is realized, so as to facilitate the fixing of the exhaust pipe 11 and the exhaust duct 21, after the fixing is completed, the end surface of the bolt 23 will be a certain distance from the surface of the nut 113, so as to facilitate subsequent detection, the side of the exhaust duct 21 is sleeved with the fixed table 25, the inner side of the top of the fixed table 25 is rotatably connected with a plurality of positioning cap 24, the positioning cap 24 is located on the upper surface of the bolt 23, the top of the positioning cap 24 is provided with a positioning groove 241, the bottom of the positioning cap 24 is provided with a butt joint groove 242, the side wall of the fixed table 25 is fixedly connected with the protection ring 26, the inner wall of the protection ring 26 is provided with the adjusting tooth block 27, the inner side of the bottom of the fixed table 25 is rotatably connected with the sealing adjusting cap 28, the side wall of the bottom of the sealing adjusting cap 28 is provided with a plurality of tooth blocks.
[0025] The moving structure 3 comprises a moving table 31, the inner side wall of the moving table 31 is rotationally connected with the side wall of the moving structure 3, the top of the moving table 31 is provided with an adjusting motor 32, the bottom transmission end of the adjusting motor 32 is provided with a positioning gear 33, the outer wall of the positioning gear 33 is engaged with the outer wall of the positioning tooth block 27, the detection structure 4 comprises infrared temperature sensors 41 and laser sensors 42 which are oppositely arranged on the two sides of the moving table 31, the infrared temperature sensors 41 can conveniently detect the connection between the exhaust structure 2 and the gas outlet pipe 11, when the flue gas leaks, the value of the infrared temperature sensor 41 is abnormal, in the initial calibration, when the boiler is in normal operation and the connection between the exhaust structure 2 and the gas outlet pipe 11 is in a stable working state without leakage, the moving structure 3 drives the infrared temperature sensor 41 to slowly move around the connection, the temperature values detected at different positions are recorded, the average value of multiple measurements is set as the reference temperature value, and at the same time, the reasonable threshold value of the reference temperature is set according to the standard temperature range of the flue gas under the working condition, the initial calibration is completed, and in the subsequent detection, if the value of the infrared temperature sensor 41 exceeds the threshold value, it is determined that there is flue gas leakage, the laser sensor 42 can conveniently detect whether the bolt 23 is loose, the detection direction of the laser sensor 42 is opposite to the bolt 23, in the initial calibration, the boiler is in normal operation, the connection between the exhaust structure 2 and the gas outlet pipe 11 is in a state without leakage, and the bolt 23 is in a standard fastening state, at this time, the vertical distance between the end surface of each bolt 23 and the surface of the nut 113 is detected by the laser sensor 42 one by one, and the distance value corresponding to each bolt 23 is recorded as the reference distance, and in the subsequent detection, if the distance measured by the laser sensor 42 is less than the reference distance, it is determined that the bolt 23 is loose.
[0026] The fastening structure 5 comprises an electric torque wrench 51, the bottom of the electric torque wrench 51 is provided with a limiting cover 57, the output end of the electric torque wrench 51 is provided with a driving block 52, a plurality of micro electric telescopic rods 53 are arranged on the inner cavity wall of the limiting cover 57, one end of the bottom of the micro electric telescopic rods 53 is provided with a pushing disc 54, the middle part of the pushing disc 54 is rotationally connected with a limiting frame 55, the inner cavity of the limiting frame 55 is slidably connected with the side wall of the driving block 52, the bottom of the limiting frame 55 is provided with an insertion block 56, the inside of the second flange plate 22 is provided with a transmission groove 221, one end of the bottom of the sealing adjusting cap 28 is rotationally connected with the bottom of the transmission groove 221, the inside of the second flange plate 22 is provided with a threaded groove 222, the standby sealing structure 6 comprises a large gear 62 which is threadedly connected with the inner cavity wall of the threaded groove 222, the bottom of the large gear 62 is provided with a heat-resistant hollow sealing ring 61, the side wall of the bottom of the sealing adjusting cap 28 is engaged with a chain 64, the inside of the chain 64 is engaged with a double gear 63, the side wall of the double gear 63 is engaged with the side wall of the large gear 62, and the cleaning structure 7 comprises a ring plate 71 which is arranged on the bottom of the heat-resistant hollow sealing ring 61, and a brush 72 is arranged on the side wall of the ring plate 71.
[0027] Specifically, when the value of the infrared temperature sensor 41 is abnormal, it is judged that there is a flue gas leakage situation, and at the same time the laser sensor 42 detects that the bolt 23 is loose, at this time the adjusting gear 33 is rotated by adjusting the motor 32 to drive the adjusting gear 33 to mesh with the adjusting gear block 27, thereby driving the moving platform 31 to rotate, allowing the moving platform 31 to drive the electric torque wrench 51 to rotate to the bolt 23 on the exhaust structure 2 that is loose, and then starting the micro electric telescopic rod 53, allowing one end of the micro electric telescopic rod 53 at the bottom to push the push plate 54 to descend, thereby pushing the plug block 56 into the inner cavity of the positioning groove 241, at this time the electric torque wrench 51 is started, the driving block 52 is driven to rotate by the output end of the electric torque wrench 51, the driving block 52 drives the limiting frame 55 to rotate, when the limiting frame 55 rotates, the plug block 56 at the bottom of the limiting frame 55 is inserted into the inner cavity of the positioning groove 241, thereby driving the positioning cap 24 to rotate, allowing the butt joint groove 242 to drive the bolt 23 to rotate, thereby solving the problem of flue gas leakage caused by loose fasteners, at this time after tightening, the flue gas leakage situation can still be detected, at this time the standby sealing structure 6 is standby sealed by controlling the moving structure 3, thereby avoiding flue gas leakage.
[0028] When the value of the infrared temperature sensor 41 is abnormal, it is judged that there is a flue gas leakage situation, but the fastener is not loose, at this time the moving structure 3 moves the fastening structure 5 above the sealing adjusting cap 28, the plug block 56 is pushed into the inside of the top of the sealing adjusting cap 28 by starting the micro electric telescopic rod 53 again, and then the electric torque wrench 51 is started, the sealing adjusting cap 28 is rotated by the electric torque wrench 51, the tooth block at the bottom of the sealing adjusting cap 28 meshes with the chain 64, allowing the chain 64 to drive the double gear 63 to rotate, thereby meshing the double gear 63 with the large gear 62, driving the large gear 62 to threadedly rotate in the threaded groove 222, allowing the large gear 62 to descend and rotate at the same time, until the heat-resistant hollow sealing ring 61 is inserted into the inner cavity of the standby groove 115, the brush 72 is driven to rotate by the ring plate 71 at the bottom of the heat-resistant hollow sealing ring 61, and the inner cavity wall of the standby groove 115 is brushed and cleaned by the brush 72, until the ring plate 71 contacts one side of the standby groove 115, and the large gear 62 is still threadedly rotating, thereby extruding the heat-resistant hollow sealing ring 61, and the heat-resistant hollow sealing ring 61 is extruded to both sides, allowing the heat-resistant hollow sealing ring 61 to tightly fit with the standby groove 115, achieving the effect of sealing, thereby avoiding flue gas leakage.
[0029] In order to solve the problem that the fastening structure 5 and the standby sealing structure 6 cannot inhibit flue gas leakage, Figure 2 Figure 4 and Figure 12 As shown: the standby emergency structure 8 includes the booster spring 83 installed at the bottom of the fixed table 25, the booster spring 83 is installed at the bottom of the magnetic belt plate 82, the top of the magnetic belt plate 82 is installed with the folding sealing sleeve 81, the folding sealing sleeve 81 is located at the inner side of the booster spring 83, the top of the folding sealing sleeve 81 is installed with the bottom of the fixed table 25, the four edges of the side wall of the magnetic belt plate 82 are installed with the limiting frame 84, by unlocking the electromagnetic lock 9, the magnetic belt plate 82 is pushed down by the elastic force of the booster spring 83, at the same time, the limiting ring 101 of the side frame slides along the limiting rod 102 to realize limiting, so as to ensure the stability during the descending process, finally, the magnetic belt plate 82 can be adsorbed on the upper surface of the conical plate 111 by the self magnetic adsorption characteristics, to form an emergency seal, the limiting structure 10 includes the limiting ring 101 installed at the four edges of the magnetic belt plate 82, the inner side of the limiting ring 101 is slidably connected with the limiting rod 102, and the top of the limiting rod 102 is installed with the bottom of the fixed table 25.
[0030] Specifically, when the above two cases cannot inhibit the flue gas leakage, at this time, the value of the infrared temperature sensor 41 is still in an abnormal state, then, by controlling one end of the electromagnetic lock 9 to retract from the inner side of the limiting frame 84 to the inside, the magnetic belt plate 82 is not limited by the electromagnetic lock 9, starts to descend, and by the elastic characteristics of the booster spring 83, the magnetic belt plate 82 is pushed down, while the magnetic belt plate 82 pulls the folding sealing sleeve 81 to extend, and the limiting ring 101 installed on the side frame of the magnetic belt plate 82 slides on the outer wall of the limiting rod 102 to limit the magnetic belt plate 82, until the magnetic belt plate 82 is adsorbed on the upper surface of the conical plate 111.
[0031] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.
[0032] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An environmentally friendly flue gas waste heat recovery boiler, comprising a heat recovery device (1), characterized in that: One end of the heat recovery device (1) is provided with an air outlet pipe (11), one end of the air outlet pipe (11) is provided with an exhaust structure (2), the outer wall of one end of the air outlet pipe (11) is fixedly sleeved with a tapered plate (111), the outer wall of the exhaust structure (2) is rotatably connected with a moving structure (3), the top of the moving structure (3) is provided with a detection structure (4), the top of the moving structure (3) is provided with a fastening structure (5), the inner wall of the bottom of the exhaust structure (2) is provided with a backup sealing structure (6), the bottom of the backup sealing structure (6) is provided with a cleaning structure (7), the inner cavity of the bottom of the exhaust structure (2) is provided with an emergency structure (8), the frame of the bottom of the emergency structure (8) is provided with a limiting structure (10), the four edges of the inner cavity wall of the exhaust structure (2) are provided with an electromagnetic lock (9), one end of the electromagnetic lock (9) is inserted into the clamping groove of the emergency structure (8).
2. The environmentally friendly flue gas waste heat recovery boiler according to claim 1, characterized in that, One end of the air outlet pipe (11) is fixedly connected with a flange (114), a plurality of limiting grooves (112) are formed in the bottom of the flange (114), the inner side of the limiting groove (112) is fixedly connected with a nut (113), and the bottom of the air outlet pipe (11) is provided with a backup groove (115).
3. The environmentally friendly flue gas waste heat recovery boiler according to claim 1, characterized in that, The exhaust structure (2) comprises an exhaust pipe (21), the bottom of the exhaust pipe (21) is fixedly connected with a second flange (22), the inner side of the second flange (22) is sleeved with a bolt (23), and the bottom of the exhaust pipe (21) is provided with a heat-resistant sealing ring (29).
4. The environmentally friendly flue gas waste heat recovery boiler according to claim 3, characterized in that, The side of the exhaust pipe (21) is sleeved with a fixed table (25), the inner side of the top of the fixed table (25) is rotatably connected with a plurality of positioning caps (24), the positioning cap (24) is located on the upper surface of the bolt (23), the top of the positioning cap (24) is provided with a positioning groove (241), the bottom of the positioning cap (24) is provided with a butt joint groove (242), the side wall of the fixed table (25) is fixedly connected with a protective ring (26), the inner side wall of the protective ring (26) is provided with a positioning tooth block (27), the inner side of the bottom of the fixed table (25) is rotatably connected with a sealing adjusting cap (28), and the side wall of the bottom of the sealing adjusting cap (28) is provided with a plurality of tooth blocks.
5. The environmentally friendly flue gas waste heat recovery boiler according to claim 4, characterized in that, The moving structure (3) comprises a moving table (31), the inner side wall of the moving table (31) is rotatably connected with the side wall of the moving structure (3), the top of the moving table (31) is provided with an adjusting motor (32), the bottom of the adjusting motor (32) is provided with a positioning gear (33), the outer wall of the positioning gear (33) is engaged with the outer wall of the positioning tooth block (27), and the detection structure (4) comprises an infrared temperature sensor (41) and a laser sensor (42) which are oppositely installed on the two sides of the moving table (31).
6. The environmentally friendly flue gas waste heat recovery boiler according to claim 1, characterized in that, The fastening structure (5) comprises an electric torque wrench (51), the bottom of the electric torque wrench (51) is provided with a limiting cover (57), the output end of the electric torque wrench (51) is provided with a driving block (52), the inner cavity wall of the limiting cover (57) is provided with a plurality of micro electric telescopic rods (53), one end of the bottom of the micro electric telescopic rods (53) is provided with a push disc (54), the middle part of the push disc (54) is rotatably connected with a limiting frame (55), the inner cavity of the limiting frame (55) is slidably connected with the side wall of the driving block (52), and the bottom of the limiting frame (55) is provided with an insertion block (56).
7. The environmentally friendly flue gas waste heat recovery boiler according to claim 4, characterized in that, The inner part of the second flange plate (22) is provided with a transmission groove (221), one end of the bottom of the sealing adjusting cap (28) is rotatably connected with the bottom of the transmission groove (221), and the inner part of the second flange plate (22) is provided with a threaded groove (222).
8. The environmentally friendly flue gas waste heat recovery boiler according to claim 7, characterized in that, The standby sealing structure (6) comprises a large gear (62) which is threadedly connected with the inner cavity wall of the threaded groove (222), the bottom of the large gear (62) is provided with a heat-resistant hollow sealing ring (61), the side wall of the bottom of the sealing adjusting cap (28) is engaged with a chain (64), the inner side of the chain (64) is engaged with a double gear (63), the side wall of the double gear (63) is engaged with the side wall of the large gear (62), and the cleaning structure (7) comprises a ring plate (71) which is installed at the bottom of the heat-resistant hollow sealing ring (61), and the side wall of the ring plate (71) is provided with a brush (72).
9. The environmentally friendly flue gas waste heat recovery boiler according to claim 4, characterized in that, The emergency structure (8) comprises a boosting spring (83) which is installed at the bottom of the fixed table (25), the bottom of the boosting spring (83) is provided with a magnetic belt plate (82), the top of the magnetic belt plate (82) is provided with a folding sealing sleeve (81), the folding sealing sleeve (81) is located at the inner side of the boosting spring (83), the top of the folding sealing sleeve (81) is installed with the bottom of the fixed table (25), and the side wall of the magnetic belt plate (82) is provided with a limiting frame (84) on four sides.
10. The environmentally friendly flue gas waste heat recovery boiler according to claim 9, characterized in that, The limiting structure (10) comprises a limiting ring (101) which is installed on four sides of the magnetic belt plate (82), the inner side of the limiting ring (101) is slidably connected with a limiting rod (102), and the top of the limiting rod (102) is installed with the bottom of the fixed table (25).