Flue gas purification waste heat recovery device

Abstract

The utility model discloses a flue gas purification waste heat recovery device which comprises a waste heat recovery mechanism which comprises a flue gas through pipe and a heat exchange coil pipe, and a water inlet and a water outlet of the heat exchange coil pipe penetrate through the flue gas through pipe and are used for recovering flue gas waste heat. And the flue gas purification main body mechanism comprises a first flue gas pipeline and a second flue gas pipeline. According to the flue gas purification device, the flue gas flow rate is increased by utilizing the flue gas pressurization mechanism, the flue gas flows through the first flue gas pipeline and the second flue gas pipeline from the flue gas pressurization mechanism and enters the purification liquid of the flue gas purification box main body to form bubbles, and the bubbles are preliminarily segmented through holes in the flue gas outlet amount control assembly; the flue gas is subjected to secondary cutting when passing through the holes in the flue gas crushing assembly, and the flue gas crushing assembly rotates to enable part of bubbles to be crushed to be smaller, so that the flue gas and the purification liquid are mixed more sufficiently through double crushing operation, and the flue gas purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling and reuse of printing and dyeing water, in particular to a flue gas purification waste heat recovery device. Background Art

[0002] The background technology of flue gas purification waste heat recovery device is mainly based on two aspects of demand: one is the demand for improving energy efficiency in industrial production, and the other is the requirement of environmental protection regulations to reduce pollutant emissions.

[0003] In the industrial production process, especially in high energy consumption industries such as steel, electricity, and chemical industry, a large amount of flue gas is generated. These flue gases not only contain a large amount of waste heat that is not fully utilized, but also may contain harmful pollutants. Therefore, how to effectively recover the waste heat in these flue gases and convert it into reusable energy, and more importantly, reduce the emission of pollutants, has become an urgent problem to be solved.

[0004] After the waste heat of general industrial flue gas is absorbed, the flue gas purification usually adopts the spraying method to mix the purification liquid with the flue gas. However, this method also has some limitations. During the flue gas purification, the flue gas and the purification liquid are not mixed and contacted sufficiently, so that the treated flue gas still contains pollutants and the purification efficiency is low. Therefore, in practical applications, it is necessary to select and optimize according to the specific situation. Utility Model Content

[0005] The purpose of the utility model is to provide a flue gas purification waste heat recovery device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A flue gas purification waste heat recovery device, comprising:

[0008] The waste heat recovery mechanism comprises a flue gas duct and a heat exchange coil, wherein the water inlet and the water outlet of the heat exchange coil penetrate the flue gas duct and are used to recover the waste heat of the flue gas;

[0009] The main smoke purification mechanism includes a first smoke duct and a second smoke duct. The bottom of the first smoke duct is sleeved on the second smoke duct. The smoke flows from the first smoke duct through the second smoke duct and then flows into the smoke output control component. The smoke output control component has a smoke breaking component on the outside. The smoke enters the purification liquid to form bubbles. The smoke output control component is used to initially break the bubbles, and the smoke breaking component is used to further break the bubbles.

[0010] The flue gas purification box mechanism comprises a flue gas purification box body, which is located on one side of the waste heat recovery mechanism, and the first flue gas duct runs through the top of the flue gas purification box body;

[0011] The flue gas pressurizing mechanism comprises an air pump, which is located between the waste heat recovery mechanism and the first flue gas duct and is used for pressurizing the flue gas and promoting the flow of the flue gas.

[0012] Furthermore, the inner wall of the smoke duct is fixedly connected to the smoke column, and the heat exchange coil is located inside the smoke duct and is coiled and fixed on the smoke column.

[0013] Furthermore, the smoke boosting mechanism includes a support frame, the inner side wall of the support frame is fixedly connected to the air pump, the smoke inlet of the air pump is fixedly connected to one end of the smoke duct, and the smoke outlet of the air pump is fixedly connected to one end of the first smoke duct.

[0014] Furthermore, one end of the first smoke duct and one end of the second smoke duct are sleeved, the second smoke duct is located inside the smoke output control component, and the top of the second smoke duct is fixedly connected to the smoke output control component.

[0015] Furthermore, a hole is provided on the top of the flue gas purification box body, a cover plate is arranged on the hole, one side of the flue gas purification box body is rotatably connected to a rotating box door assembly, a smoke inlet is also provided on the top of the flue gas purification box body, and a smoke outlet, a liquid inlet and a liquid outlet are fixedly connected to the flue gas purification box body.

[0016] Preferably: a circular hole is provided at one end of the first smoke duct, a slot is provided on the top inner wall of the second smoke duct, a fixed pin is provided on the second smoke duct, the middle part of the fixed pin is a non-rigid structure, the fixed pin can be inserted into the circular hole and the slot, and a trumpet-shaped air guide hopper is fixedly connected to the bottom inner wall of the second smoke duct.

[0017] Preferably: the smoke outlet volume control component includes a smoke outlet outer cylinder and a smoke outlet inner cylinder, a plurality of holes are distributed on the smoke outlet outer cylinder and the smoke outlet inner cylinder, the top of the smoke outlet inner cylinder is fixedly connected to the top of the second smoke duct, the smoke outlet outer cylinder is located outside the smoke outlet inner cylinder and is rotatably connected to the smoke outlet inner cylinder, a rubber gasket is provided on the smoke outlet inner cylinder, and the top of the smoke outlet outer cylinder is fixedly connected to one end of the first tension spring on the first fixing bolt.

[0018] Preferably: the smoke breaker assembly includes a smoke breaker inner cylinder, a servo motor and a smoke breaker outer cylinder, the bottom of the smoke breaker inner cylinder is fixedly connected to the rotating shaft of the servo motor, the bottom of the outer side of the smoke purification box body is fixedly connected to the servo motor, a plurality of holes are distributed on the smoke breaker inner cylinder and the smoke breaker outer cylinder, the smoke breaker inner cylinder and the smoke breaker outer cylinder are rotatably connected and the smoke breaker inner cylinder is located on the inner side of the smoke breaker outer cylinder, the top of the smoke breaker inner cylinder is fixedly connected to one end of the second tension spring on the second fixing bolt, and a plurality of fixing sockets are provided on the top of the smoke breaker outer cylinder.

[0019] Preferably, the first fixing bolt is fixedly connected to the other end of the first tension spring, and the second fixing bolt is fixedly connected to the other end of the second tension spring.

[0020] Preferably: the rotating door assembly includes a rotating rod, the bottom of the rotating door assembly is rotatably connected to the rotating rod, the rotating rod is fixedly connected to the flue gas purification box body, the top of the rotating door assembly is fixedly connected to a fixed block, a fixing hole is provided on the flue gas purification box body, and a waterproof gasket is provided on the inner side of the flue gas purification box body, and the waterproof gasket can fit tightly with the rotating door assembly.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The smoke boosting mechanism is used to increase the flow rate of the smoke, and the smoke flows from the smoke boosting mechanism through the first smoke duct and the second smoke duct into the purified liquid of the smoke purification box body to form bubbles. The bubbles are initially divided through the holes on the smoke output control component, and are secondarily divided when passing through the holes on the smoke crushing component. The smoke crushing component rotates to make some bubbles smaller, so that the smoke and the purified liquid are mixed more fully by using the double crushing operation, thereby improving the efficiency of smoke purification, and a trumpet-shaped air guide hopper is provided on the inner side of the second smoke duct, so that the smoke is blocked by the air guide hopper when flowing out from the bottom of the second smoke duct, so that the smoke is evenly discharged from the gap between the bottom of the second smoke duct and the air guide hopper, so that the bubbles generated by the smoke in the purified liquid are close to the inner wall of the smoke output control component, so that the crushing effect is better.

[0023] By passing water into the water inlet of the heat exchange coil, the flue gas enters from the end of the flue gas duct away from the water inlet of the heat exchange coil, so that the flue gas and water move towards each other, which can effectively recover the waste heat in the flue gas, improve energy utilization efficiency and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2It is a schematic diagram of the structure of the waste heat recovery mechanism and the main mechanism of flue gas purification in the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the flue gas purification box in the utility model;

[0027] Figure 4 It is a schematic diagram of the structure of the first smoke duct and the second smoke duct in the utility model;

[0028] Figure 5 This is a schematic diagram of the main structure of the flue gas purification mechanism in the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the smoke output control component in the utility model;

[0030] Figure 7 It is a structural schematic diagram of the flue gas purification box mechanism in the utility model from another perspective;

[0031] Figure 8 This is a schematic diagram of the structure of the second smoke duct and the gas guide hopper in the utility model;

[0032] Fig. 9 It is a schematic diagram of the structure of the smoke crushing component in the utility model.

[0033] In the figure: 100, waste heat recovery mechanism; 110, flue gas passage; 120, heat exchange coil; 130, flue gas column; 200, flue gas purification main mechanism; 210, smoke output control component; 211, smoke output outer cylinder; 212, smoke output inner cylinder; 213, first fixing bolt; 214, rubber gasket; 220, flue gas breaking component; 221, smoke gas breaking inner cylinder; 222, servo motor; 223, smoke gas breaking outer cylinder; 224, second fixing bolt; 225, fixing jack; 230, first flue gas duct; 2 31. round hole; 240. second flue gas duct; 241. slot; 242. fixing pin; 243. air guide hopper; 300. flue gas purification box mechanism; 310. flue gas purification box body; 320. cover plate; 330. rotating box door assembly; 331. rotating rod; 332. fixing block; 333. fixing hole; 334. waterproof gasket; 340. smoke inlet; 350. smoke outlet; 360. liquid inlet; 370. liquid outlet; 400. smoke boosting mechanism; 410. support frame; 420. air pump. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figures 1 to 9 In an embodiment of the utility model, a flue gas purification waste heat recovery device comprises:

[0036] The waste heat recovery mechanism 100 includes a smoke duct 110 and a heat exchange coil 120. The water inlet and the water outlet of the heat exchange coil 120 penetrate the smoke duct 110 to recover the waste heat of the smoke. The inner wall of the smoke duct 110 is fixedly connected to the smoke column 130. The heat exchange coil 120 is located inside the smoke duct 110 and is coiled and fixed on the smoke column 130. The smoke column 130 not only fixes the heat exchange coil 120, but also occupies the middle space of the smoke duct 110 so that most of the smoke passes through the heat exchange coil 120.

[0037] The main smoke purification mechanism 200 includes a first smoke duct 230 and a second smoke duct 240. The bottom of the first smoke duct 230 is sleeved on the second smoke duct 240. The smoke flows from the first smoke duct 230 through the second smoke duct 240 and then flows into the smoke output control component 210. The smoke output control component 210 is provided with a smoke breaking component 220 on the outside. The smoke enters the purification liquid to form bubbles. The smoke output control component 210 is used to initially break the bubbles, and the smoke breaking component 220 is used to further break the bubbles.

[0038] The flue gas purification box mechanism 300 includes a flue gas purification box body 310, which is located on one side of the waste heat recovery mechanism 100. The first flue gas duct 230 runs through the top of the flue gas purification box body 310. A hole is provided on the top of the flue gas purification box body 310, on which a cover plate 320 is provided. One side of the flue gas purification box body 310 is rotatably connected to a rotating box door assembly 330. The top of the flue gas purification box body 310 is also provided with a smoke inlet 340. The smoke outlet 350, the liquid inlet 360 and the liquid outlet 370 are fixedly connected to the flue gas purification box body 310, and are adapted to the cover plate 320. The holes are used for operators to conveniently adjust the smoke output control component 210 and the smoke crushing component 220. The cover plate 320 is used to block the holes to prevent the purification liquid from splashing during use. The design of the rotating box door component 330 makes it easy to replace the second smoke duct 240 and simply flush the inside of the smoke output control component 210, the smoke crushing component 220 and the smoke purification box body 310. The smoke inlet 340 is used for smoke intake, the smoke outlet 350 is used for the outflow of purified smoke, the liquid inlet 360 is the inlet for adding purification liquid, and the liquid outlet 370 is the outlet for replacing the purification liquid.

[0039] In this embodiment, when in use, water is passed into the water inlet of the heat exchange coil 120, and the smoke enters from one end of the smoke duct 110, contacts the heat exchange coil 120, and heat exchange occurs. The water temperature in the heat exchange coil 120 rises and flows out from the water outlet of the heat exchange coil 120, and the smoke flows from the smoke duct 110 to the smoke boosting mechanism 400. The smoke boosting mechanism 400 increases the flow power of the smoke, and the smoke flows from the smoke boosting mechanism 400 through the first smoke duct 230 and the second smoke duct 240 into the purified liquid of the smoke purification box body 310 to form bubbles. The bubbles are initially divided through the holes on the smoke output control component 210. When passing through the holes on the smoke crushing component 220, the smoke crushing component 220 rotates to make the bubbles smaller, so that the smoke and the purified liquid are mixed more fully and the smoke is purified more completely.

[0040] In this embodiment, in order to make up for the defect that the smoke is mostly discharged from above the smoke output control component 210 and the smoke breaking component 220 due to the low smoke exhaust rate, and then the smoke is not broken sufficiently.

[0041] like Figure 1 , 2 As shown in FIG. 4 , the flue gas pressurizing mechanism 400 includes an air pump 420, which is located between the waste heat recovery mechanism 100 and the first flue gas duct 230 and is used to pressurize the flue gas and promote the flow of the flue gas. The flue gas pressurizing mechanism 400 includes a support frame 410, the inner wall of the support frame 410 is fixedly connected to the air pump 420, the smoke inlet 340 of the air pump 420 is fixedly connected to one end of the flue gas passage 110, and the smoke outlet 350 of the air pump 420 is fixedly connected to one end of the first flue gas duct 230, and the air pump 420 is used to give the flue gas a certain power so that the flue gas can flow out from below the liquid level of the purified liquid.

[0042] like Figure 2 , 4 As shown in Figure 5, in this embodiment, one end of the first smoke duct 230 and one end of the second smoke duct 240 are sleeved, the second smoke duct 240 is located on the inner side of the smoke output control component 210 and the top of the second smoke duct 240 is fixedly connected to the smoke output control component 210. The second smoke duct 240 is in contact with the purification liquid for a long time and is more susceptible to aging and damage than the first smoke duct 230. The sleeved connection makes the second smoke duct 240 easy to replace.

[0043] like Figure 2 , 4 As shown in Figure 5, in this embodiment, a circular hole 231 is provided at one end of the first smoke duct 230, a slot 241 is provided on the top inner wall of the second smoke duct 240, and the second smoke duct 240 is provided with a fixed pin 242. The middle part of the fixed pin 242 is a non-rigid structure, and the fixed pin 242 can be inserted into the circular hole 231 and the slot 241. A trumpet-shaped air guide hopper 243 is fixedly connected to the inner wall of the bottom of the second smoke duct 240.

[0044] During specific implementation, the first flue gas duct 230 is sleeved on the second flue gas duct 240, and both ends of the fixing pin 242 pass through the circular hole 231 and are inserted into the slot 241, thereby fixing the first flue gas duct 230 and the second flue gas duct 240. When the flue gas flows out from the bottom of the second flue gas duct 240, it is blocked by the air guide scoop 243, so the flue gas flows out from the gap between the bottom of the second flue gas duct 240 and the air guide scoop 243, so that the bubbles generated by the flue gas in the purified liquid are close to the inner wall of the smoke output control component 210, so that the crushing effect is better.

[0045] like Figure 6 and 9As shown, in this embodiment, the smoke output volume control component 210 includes a smoke output outer tube 211 and a smoke output inner tube 212, a plurality of holes are distributed on the smoke output outer tube 211 and the smoke output inner tube 212, the top of the smoke output inner tube 212 is fixedly connected to the top of the second smoke duct 240, the smoke output outer tube 211 is located outside the smoke output inner tube 212, and is rotatably connected to the smoke output inner tube 212, a rubber gasket 214 is provided on the smoke output inner tube 212, the top of the smoke output outer tube 211 is fixedly connected to one end of the first tension spring on the first fixing bolt 213, and the smoke breaking component 220 includes a smoke breaking inner tube 221, a servo motor 2 22 and the smoke breaker outer cylinder 223, the bottom of the smoke breaker inner cylinder 221 is fixedly connected to the rotating shaft of the servo motor 222, the bottom of the outer side of the smoke purification box body 310 is fixedly connected to the servo motor 222, a plurality of holes are distributed on the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223, the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223 are rotatably connected and the smoke breaker inner cylinder 221 is located on the inner side of the smoke breaker outer cylinder 223, the top of the smoke breaker inner cylinder 221 is fixedly connected to one end of the second tension spring on the second fixing bolt 224, and a plurality of fixing sockets 225 are opened on the top of the smoke breaker outer cylinder 223.

[0046] In a specific implementation, the gap between the holes on the outer smoke outlet tube 211 and the inner smoke outlet tube 212 is adjusted by rotating the outer smoke outlet tube 211 and the inner smoke outlet tube 212, and then the first fixing bolt 213 is pulled up to press against the rubber gasket 214 under the action of the first tension spring, so that the positions of the outer smoke outlet tube 211 and the inner smoke outlet tube 212 are relatively fixed, and the bubbles can be initially broken. The smoke output control component 210 and the smoke breaking component 220 rotate under the drive of the servo motor 222 to keep the smoke dispersed and discharged. ; The size of the gap between the holes on the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223 is adjusted by rotating the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223 relative to each other, and then the second fixing bolt 224 is picked up and inserted into the fixing socket 225, so that the positions of the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223 are relatively fixed, and the servo motor 222 drives the smoke breaker inner cylinder 221 and the smoke breaker outer cylinder 223 to rotate together, and the bubbles are broken when passing through the holes, and the smoke and the purified liquid are fully mixed.

[0047] like Figure 6 As shown, in this embodiment, the first fixing bolt 213 is fixedly connected to the other end of the first tension spring, and the second fixing bolt 224 is fixedly connected to the other end of the second tension spring. The first fixing bolt 213 and the rubber gasket 214 are fixed under the action of the first tension spring, and the second fixing bolt 224 and the fixing socket 225 are fixed under the action of the second tension spring. Example

[0048] On the basis of the first embodiment, in order to make up for the problem that the smoke output control component 210 and the smoke breaking component 220 in the first embodiment need to be cleaned after long-term use.

[0049] In this embodiment, Figure 3 and 7 As shown, the rotating door assembly 330 includes a rotating rod 331, the bottom of the rotating door assembly 330 is rotatably connected to the rotating rod 331, the rotating rod 331 is fixedly connected to the flue gas purification box body 310, the top of the rotating door assembly 330 is fixedly connected to the fixing block 332, the flue gas purification box body 310 is provided with a fixing hole 333, and a waterproof gasket 334 is provided on the inner side of the flue gas purification box body 310, and the waterproof gasket 334 can fit tightly with the rotating door assembly 330.

[0050] In specific implementation, when the second flue gas duct 240 needs to be replaced or simply cleaned, the rotating door assembly 330 is rotated around the rotating rod 331 to a horizontal state, and the operator performs relevant operations. After the operation is completed, the rotating door assembly 330 is rotated around the rotating rod 331 to a state where it is vertically fitted with the waterproof gasket 334, and the rotating door assembly 330 and the flue gas purification box body 310 are fixed by the fixing block 332 and the fixing hole 333. The tight fit between the waterproof gasket 334 and the rotating door assembly 330 prevents the purified liquid from leaking from the gap between the flue gas purification box body 310 and the rotating door assembly 330.

[0051] Among them, because the second flue gas duct 240 is immersed in the purification liquid for a long time, the solution will become acidic after the purification liquid absorbs harmful gases, which will corrode the second flue gas duct 240. Therefore, the socket design of the second flue gas duct 240 and the first flue gas duct 230 and the openable design of the rotating door assembly 330 make the second flue gas duct 240 easy to replace and the purification system easy to maintain. The smoke output control assembly 210 and the smoke breaking assembly 220 can break the bubbles, making the smoke purification more thorough and enhancing the effect of the purification system. It is of great significance to improve the energy utilization efficiency of industrial production and reduce environmental pollution.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flue gas purification waste heat recovery device, characterized in that: include: The waste heat recovery mechanism comprises a flue gas duct and a heat exchange coil, wherein the water inlet and the water outlet of the heat exchange coil penetrate the flue gas duct and are used to recover the waste heat of the flue gas; The main smoke purification mechanism includes a first smoke duct and a second smoke duct. The bottom of the first smoke duct is sleeved on the second smoke duct. The smoke flows from the first smoke duct through the second smoke duct and then flows into the smoke output control component. The smoke output control component has a smoke breaking component on the outside. The smoke enters the purification liquid to form bubbles. The smoke output control component is used to initially break the bubbles, and the smoke breaking component is used to further break the bubbles. The flue gas purification box mechanism comprises a flue gas purification box body, which is located on one side of the waste heat recovery mechanism, and the first flue gas duct runs through the top of the flue gas purification box body; The flue gas pressurizing mechanism comprises an air pump, which is located between the waste heat recovery mechanism and the first flue gas duct and is used for pressurizing the flue gas and promoting the flow of the flue gas.

2. A flue gas purification waste heat recovery device according to claim 1, characterized in that: The inner wall of the smoke duct is fixedly connected to the smoke column, and the heat exchange coil is located inside the smoke duct and is coiled and fixed on the smoke column.

3. The flue gas purification waste heat recovery device according to claim 1, characterized in that: The smoke boosting mechanism comprises a support frame, the inner side wall of the support frame is fixedly connected to the air pump, the smoke inlet of the air pump is fixedly connected to one end of the smoke duct, and the smoke outlet of the air pump is fixedly connected to one end of the first smoke duct.

4. The flue gas purification waste heat recovery device according to claim 1, characterized in that: One end of the first smoke duct is sleeved with one end of the second smoke duct, the second smoke duct is located inside the smoke output control component and the top of the second smoke duct is fixedly connected to the smoke output control component.

5. The flue gas purification waste heat recovery device according to claim 1, characterized in that: A hole is provided on the top of the flue gas purification box body, on which a cover plate is arranged. One side of the flue gas purification box body is rotatably connected to a rotating box door assembly. A smoke inlet is also provided on the top of the flue gas purification box body. A smoke outlet, a liquid inlet and a liquid outlet are fixedly connected to the flue gas purification box body.

6. A flue gas purification waste heat recovery device according to claim 4, characterized in that: A circular hole is provided at one end of the first smoke duct, a slot is provided on the top inner wall of the second smoke duct, a fixed pin is provided on the second smoke duct, the middle part of the fixed pin is a non-rigid structure, the fixed pin can be inserted into the circular hole and the slot, and a trumpet-shaped air guide hopper is fixedly connected to the bottom inner wall of the second smoke duct.

7. The flue gas purification waste heat recovery device according to claim 4, characterized in that: The smoke output control component includes a smoke outlet outer cylinder and a smoke outlet inner cylinder, a plurality of holes are distributed on the smoke outlet outer cylinder and the smoke outlet inner cylinder, the top of the smoke outlet inner cylinder is fixedly connected to the top of the second smoke duct, the smoke outlet outer cylinder is located outside the smoke outlet inner cylinder and is rotatably connected to the smoke outlet inner cylinder, a rubber gasket is provided on the smoke outlet inner cylinder, and the top of the smoke outlet outer cylinder is fixedly connected to one end of the first tension spring on the first fixing bolt.

8. The flue gas purification waste heat recovery device according to claim 7, characterized in that: The smoke breaker assembly includes a smoke breaker inner cylinder, a servo motor and a smoke breaker outer cylinder. The bottom of the smoke breaker inner cylinder is fixedly connected to the rotating shaft of the servo motor. The bottom of the outer side of the smoke purification box body is fixedly connected to the servo motor. A plurality of holes are distributed on the smoke breaker inner cylinder and the smoke breaker outer cylinder. The smoke breaker inner cylinder and the smoke breaker outer cylinder are rotatably connected and the smoke breaker inner cylinder is located on the inner side of the smoke breaker outer cylinder. The top of the smoke breaker inner cylinder is fixedly connected to one end of the second tension spring on the second fixing bolt. A plurality of fixing sockets are provided on the top of the smoke breaker outer cylinder.

9. The flue gas purification waste heat recovery device according to claim 8, characterized in that: The first fixing bolt is fixedly connected to the other end of the first tension spring, and the second fixing bolt is fixedly connected to the other end of the second tension spring.

10. The flue gas purification waste heat recovery device according to claim 5, characterized in that: The rotating door assembly includes a rotating rod, the bottom of the rotating door assembly is rotatably connected to the rotating rod, the rotating rod is fixedly connected to the flue gas purification box body, the top of the rotating door assembly is fixedly connected to a fixed block, a fixing hole is provided on the flue gas purification box body, and a waterproof gasket is provided on the inner side of the flue gas purification box body, and the waterproof gasket can fit tightly with the rotating door assembly.

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