A chemical condenser waste heat recovery device

Abstract

The present invention discloses a waste heat recovery device for a chemical condenser, belonging to the technical field of chemical equipment, including heat exchange tubes, fins, a recovery chamber, an intake connecting pipe, an exhaust connecting pipe, a water inlet pipe, and a drain pipe. Each fin is fixedly connected to the heat exchange tube and sleeved on the outer wall of the heat exchange tube. The intake connecting pipe is communicated with the heat exchange tube and located at one end of the heat exchange tube. The exhaust connecting pipe is communicated with the heat exchange tube and located at the end of the heat exchange tube away from the intake connecting pipe. The heat exchange tube is arranged inside the recovery chamber. The water inlet pipe is communicated with the recovery chamber, and the drain pipe is communicated with the recovery chamber. Through the reciprocating movement of the piston, the scavenger inside the heat exchange tube can be pushed to swing reciprocally, thereby removing the scale inside the heat exchange tube, achieving the operation of removing scale from the heat exchange tube in a bent state quickly, realizing the installation and fixation of the recovery chamber, and through the porous setting, it is not limited to one installation structure, improving the adaptability and diversity of installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical equipment, and provides a waste heat recovery device for a chemical condenser. Background Art

[0002] Currently, a condenser is a type of heat exchanger that can convert a gas or steam into a liquid, transfer the heat in the pipe body, and transfer the heat of the gas or steam to the nearby air or water body. The working process of the condenser is an exothermic process and can release a large amount of heat energy. Therefore, the temperature of the condenser is relatively high. If the heat energy is not collected, a large amount of heat energy will be wasted.

[0003] In the prior art, to avoid waste of the heat energy of the condenser, a waste heat recovery device is used to recover the heat energy of the condenser and reuse the heat energy, which can greatly reduce the production cost.

[0004] However, in the prior art, inside the heat exchange tubes of the waste heat recovery device, after long-term circulation of water vapor and water, a large amount of scale will be generated inside the heat exchange tubes. And to improve the heat exchange efficiency of the waste heat recovery device, the heat exchange tubes are usually made into a bent structure, which makes it difficult to clean the bent heat exchange tubes. After a large amount of scale accumulates, it will seriously affect the heat exchange efficiency and further reduce the recovery efficiency of the waste heat recovery device. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a waste heat recovery device for a chemical condenser, aiming to solve the problem that inside the heat exchange tubes of the waste heat recovery device, after long-term circulation of water vapor and water, a large amount of scale will be generated inside the heat exchange tubes. And to improve the heat exchange efficiency of the waste heat recovery device, the heat exchange tubes are usually made into a bent structure, which makes it difficult to clean the bent heat exchange tubes. After a large amount of scale accumulates, it will seriously affect the heat exchange efficiency and further reduce the recovery efficiency of the waste heat recovery device.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The present invention provides a waste heat recovery device for a chemical condenser, which includes a heat exchange tube, fins, a recovery chamber, an intake connection pipe, an exhaust connection pipe, a water inlet pipe and a drain pipe. The number of the fins is multiple, and each fin is fixedly connected to the heat exchange tube and sleeved on the outer wall of the heat exchange tube. The intake connection pipe is communicated with the heat exchange tube and is located at one end of the heat exchange tube. The exhaust connection pipe is communicated with the heat exchange tube and is located at the end of the heat exchange tube away from the intake connection pipe. The heat exchange tube is arranged inside the recovery chamber. The water inlet pipe is communicated with the recovery chamber and is located on one side of the recovery chamber. The drain pipe is communicated with the recovery chamber and is located on one side of the recovery chamber.

[0008] Further, the intake connection pipe includes an intake main pipe, an intake side pipe, a driving piston assembly and an intake solenoid valve. The intake main pipe is communicated with the heat exchange tube and is located at one end of the heat exchange tube. The intake side pipe is communicated with the intake main pipe and is located on the outer wall of the intake main pipe. The intake solenoid valve is communicated with the intake side pipe and is located at one end of the intake side pipe. The driving piston assembly is fixedly connected to the recovery chamber and is located at the upper end of the recovery chamber, and the output end of the driving piston assembly is embedded inside the intake main pipe.

[0009] Further, the exhaust connection pipe includes an exhaust main pipe, an exhaust side pipe, an exhaust solenoid valve, a flange ring, a bottom plate, a spring, an exhaust rubber plug, a first sealing ring and a second sealing ring. The exhaust main pipe is communicated with the heat exchange tube and is located at one end of the heat exchange tube. The exhaust side pipe is communicated with the exhaust main pipe and is located on the outer wall of the exhaust main pipe. The exhaust solenoid valve is communicated with the exhaust side pipe and is located at one end of the exhaust side pipe. The flange ring is fixedly connected to the exhaust main pipe and is sleeved on the outer wall of the exhaust main pipe. The bottom plate is arranged at the lower end of the flange ring and is fixedly connected to the flange ring. The spring is fixedly connected to the bottom plate and is located at the upper end of the bottom plate. The exhaust rubber plug is fixedly connected to the spring and is located at the upper end of the spring, and the spring is located inside the exhaust main pipe. The first sealing ring is fixedly connected to the exhaust rubber plug and is embedded on the outer wall of the exhaust rubber plug. The second sealing ring is fixedly connected to the exhaust rubber plug and is embedded on the outer wall of the exhaust rubber plug.

[0010] Further, the driving piston assembly includes a bracket, a placement bin, a driving motor, a turntable, a centrifugal column, a connecting lug, a connecting shaft, an air inlet rubber plug, and a third sealing ring. The bracket is fixedly connected to the recovery bin and is located at the upper end of the recovery bin. The placement bin is fixedly connected to the bracket and is located at the lower end of the bracket. The driving motor is fixedly connected to the placement bin and is located inside the placement bin. The turntable is fixedly connected to the output end of the driving motor and is located on one side of the driving motor. The centrifugal column is fixedly connected to the turntable and is located on the outer wall of the turntable. One end of the connecting shaft is rotatably connected to the centrifugal column and is sleeved on the outer wall of the centrifugal column. The connecting lug is rotatably connected to the connecting shaft and is located at one end of the connecting shaft. The air inlet rubber plug is fixedly connected to the connecting lug and is located at one end of the connecting lug. The number of the third sealing rings is multiple, and each third sealing ring is fixedly connected to the air inlet rubber plug and is respectively embedded in the outer wall of the air inlet rubber plug, and the air inlet rubber plug is embedded in the interior of the air inlet main pipe.

[0011] Further, the chemical condenser waste heat recovery device further includes a drain solenoid valve, a water inlet solenoid valve, a drain solenoid valve, and a drain pipe. The drain solenoid valve is communicated with the drain pipe and is located at one end of the drain pipe. The water inlet solenoid valve is communicated with the water inlet pipe and is located at one end of the water inlet pipe. The drain pipe is communicated with the water inlet pipe and is located on the outer wall of the water inlet pipe. The drain solenoid valve is communicated with the drain pipe and is located at one end of the drain pipe.

[0012] Further, the chemical condenser waste heat recovery device further includes mounting posts and a porous mounting plate. The number of the mounting posts is multiple, and each mounting post is respectively fixedly connected to the recovery bin and is respectively located on one side of the recovery bin. The porous mounting plate is fixedly connected to the multiple mounting posts and is located at one end of the multiple mounting posts.

[0013] The beneficial effects of the present invention are:

[0014] 1. In the present invention, high-temperature steam is introduced into the heat exchange tube. At the same time, normal-temperature water is supplied by the water inlet pipe to fill the entire recovery bin and is discharged through the drain pipe. The heat in the steam is absorbed by means of water cooling. When cleaning the heat exchange tube, all the accumulated water and gas inside the heat exchange tube are discharged. The air outlet solenoid valve is closed, a water channel cleaning agent is filled into the interior of the heat exchange tube, and the air inlet solenoid valve is closed to make the heat exchange tube in a sealed state. The driving piston assembly drives the air inlet rubber plug to perform piston movement. After the cleaning agent inside is squeezed by pressure, the air outlet rubber plug is squeezed. A gap is formed through the spring. Through the reciprocation of the piston movement, the cleaning agent inside the heat exchange tube can be pushed to swing reciprocally, thereby removing the water scale inside the heat exchange tube, and the operation of removing the water scale from the heat exchange tube in a bent state can be achieved quickly.

[0015] 2. In the present invention, the porous mounting plate is installed and fixed by the mounting post, so that the recovery bin can be installed and fixed. And due to the porous setting, it is not limited to a single mounting structure, improving the adaptability and diversity of the installation.

[0016] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be learned from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0018] Figure 1 is the structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 is the enlarged view of the partial structure of Embodiment 1 of the present invention;

[0020] Figure 3 is the internal structure sectional view of Embodiment 1 of the present invention;

[0021] Figure 4 is of the present invention Figure 3 The enlarged view of the partial structure at A;

[0022] Figure 5 is of the present invention Figure 3 The enlarged view of the partial structure at B;

[0023] Figure 6 is the internal structure sectional view of Embodiment 2 of the present invention;

[0024] Figure 7 This is the structural diagram of Embodiment 3 of the present invention.

[0025] Reference numerals: 1 is a heat exchange tube, 2 is a fin, 3 is a recovery bin, 4 is an intake main pipe, 5 is an intake side pipe, 6 is a bracket, 7 is a placement bin, 8 is a drive motor, 9 is a turntable, 10 is a centrifugal column, 11 is a connecting lug, 12 is a connecting shaft, 13 is an intake rubber plug, 14 is a third sealing ring, 15 is an intake solenoid valve, 16 is an outlet main pipe, 17 is an outlet side pipe, 18 is an outlet solenoid valve, 19 is a flange ring, 20 is a bottom plate, 21 is a spring, 22 is an outlet rubber plug, 23 is a first sealing ring, 24 is a second sealing ring, 25 is a water inlet pipe, 26 is a drain pipe, 27 is a drain solenoid valve, 28 is a water inlet solenoid valve, 29 is a water discharge solenoid valve, 30 is a water discharge pipe, 31 is a mounting post, 32 is a porous mounting plate, 33 is a first air inlet connecting pipe, 34 is an air inlet solenoid valve, 35 is a second air inlet connecting pipe, 36 is an air inlet box, 37 is a fan connecting pipe, 38 is a first exhaust connecting pipe, 39 is an exhaust solenoid valve, 40 is a second exhaust connecting pipe, 41 is an exhaust box, 42 is a warm air pipe, 43 is an auxiliary plate. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the detailed implementation manners. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] Embodiment 1, as Figures 1-5 shown, a chemical condenser waste heat recovery device of the present invention includes a heat exchange tube 1, fins 2, a recovery bin 3, an intake connecting pipe, an outlet connecting pipe, a water inlet pipe 25 and a drain pipe 26. The number of the fins 2 is multiple, and each fin 2 is fixedly connected to the heat exchange tube 1 and sleeved on the outer wall of the heat exchange tube 1 respectively. The intake connecting pipe is communicated with the heat exchange tube 1 and is located at one end of the heat exchange tube 1. The outlet connecting pipe is communicated with the heat exchange tube 1 and is located at the end of the heat exchange tube 1 away from the intake connecting pipe. The heat exchange tube 1 is arranged inside the recovery bin 3. The water inlet pipe 25 is communicated with the recovery bin 3 and is located on one side of the recovery bin 3. The drain pipe 26 is communicated with the recovery bin 3 and is located on one side of the recovery bin 3.

[0028] Among them, the intake connecting pipe includes an intake main pipe 4, an intake side pipe 5, a driving piston assembly, and an intake solenoid valve 15. The intake main pipe 4 is connected to the heat exchange pipe 1 and is located at one end of the heat exchange pipe 1. The intake side pipe 5 is connected to the intake main pipe 4 and is located on the outer wall of the intake main pipe 4. The intake solenoid valve 15 is connected to the intake side pipe 5 and is located at one end of the intake side pipe 5. The driving piston assembly is fixedly connected to the recovery bin 3 and is located at the upper end of the recovery bin 3, and the output end of the driving piston assembly is embedded inside the intake main pipe 4.

[0029] Among them, the exhaust connecting pipe includes an exhaust main pipe 16, an exhaust side pipe 17, an exhaust solenoid valve 18, a flange ring 19, a bottom plate 20, a spring 21, an exhaust rubber plug 22, a first sealing ring 23, and a second sealing ring 24. The exhaust main pipe 16 is connected to the heat exchange pipe 1 and is located at one end of the heat exchange pipe 1. The exhaust side pipe 17 is connected to the exhaust main pipe 16 and is located on the outer wall of the exhaust main pipe 16. The exhaust solenoid valve 18 is connected to the exhaust side pipe 17 and is located at one end of the exhaust side pipe 17. The flange ring 19 is fixedly connected to the exhaust main pipe 16 and is sleeved on the outer wall of the exhaust main pipe 16. The bottom plate 20 is arranged at the lower end of the flange ring 19, and the bottom plate 20 is fixedly connected to the flange ring 19. The spring 21 is fixedly connected to the bottom plate 20 and is located at the upper end of the bottom plate 20. The exhaust rubber plug 22 is fixedly connected to the spring 21 and is located at the upper end of the spring 21, and the spring 21 is located inside the exhaust main pipe 16. The first sealing ring 23 is fixedly connected to the exhaust rubber plug 22 and is embedded on the outer wall of the exhaust rubber plug 22. The second sealing ring 24 is fixedly connected to the exhaust rubber plug 22 and is embedded on the outer wall of the exhaust rubber plug 22.

[0030] Among them, the driving piston assembly includes a bracket 6, a placement bin 7, a driving motor 8, a turntable 9, a centrifugal column 10, a connecting lug 11, a connecting shaft 12, an intake rubber plug 13, and a third sealing ring 14. The bracket 6 is fixedly connected to the recovery bin 3 and is located at the upper end of the recovery bin 3. The placement bin 7 is fixedly connected to the bracket 6 and is located at the lower end of the bracket 6. The driving motor 8 is fixedly connected to the placement bin 7 and is located inside the placement bin 7. The turntable 9 is fixedly connected to the output end of the driving motor 8 and is located on one side of the driving motor 8. The centrifugal column 10 is fixedly connected to the turntable 9 and is located on the outer wall of the turntable 9. One end of the connecting shaft 12 is rotatably connected to the centrifugal column 10 and is sleeved on the outer wall of the centrifugal column 10. The connecting lug 11 is rotatably connected to the connecting shaft 12 and is located at one end of the connecting shaft 12. The intake rubber plug 13 is fixedly connected to the connecting lug 11 and is located at one end of the connecting lug 11. The number of the third sealing rings 14 is multiple. Each of the third sealing rings 14 is fixedly connected to the intake rubber plug 13 and is respectively embedded in the outer wall of the intake rubber plug 13, and the intake rubber plug 13 is embedded in the intake main pipe 4.

[0031] The working / implementing / using principle of the present invention is as follows: High-temperature gas is introduced into the heat exchange tube 1, and the fins 2 transfer its heat to the recovery bin 3, and water is used for cooling treatment. After the heat exchange tube 1 is used for a long time, the air and accumulated water inside the heat exchange tube 1 are emptied, and the outlet electromagnetic valve 18 is closed. Scale cleaning agent is filled into the heat exchange tube 1 through the inlet electromagnetic valve 15, and the inlet electromagnetic valve 15 is closed, so that the heat exchange tube 1 forms a sealed structure. The bracket 6 supports the placement bin 7, the placement bin 7 supports the driving motor 8, the driving motor 8 is driven to rotate, thereby driving the turntable 9, driving the centrifugal column 10 to rotate centrifugally, and through the linkage of the connecting lug 11 and the connecting shaft 12, driving the intake rubber plug 13 to perform piston movement. After the outlet rubber plug 22 is squeezed by the intake rubber plug 13, the spring 21 is compressed, leaving extra space clearance, and driving the scale cleaning agent inside the heat exchange tube 1 to move. The intake rubber plug 13 performs piston movement, so that the outlet rubber plug 22 also performs piston movement. The spring 21 is continuously compressed and stretched, so that the scale cleaning agent inside it performs cyclic reciprocating movement inside the heat exchange tube 1 to achieve the purpose of removing scale. After the scale is removed, the outlet electromagnetic valve 18 is opened to discharge the scale cleaning agent. The first sealing ring 23 and the second sealing ring 24 seal the outlet rubber plug 22 to prevent the scale cleaning agent from overflowing during the extrusion process. The third sealing ring 14 also seals the intake rubber plug 13.

[0032] Example 2, please refer to Figure 6 , based on Example 1, a waste heat recovery device for a chemical condenser of the present invention, the waste heat recovery device for a chemical condenser further includes a drain solenoid valve 27, a water inlet solenoid valve 28, a drain solenoid valve 29 and a drain pipe 30. The drain solenoid valve 27 is communicated with the drain pipe 26 and is located at one end of the drain pipe 26. The water inlet solenoid valve 28 is communicated with the water inlet pipe 25 and is located at one end of the water inlet pipe 25. The drain pipe 30 is communicated with the water inlet pipe 25 and is located on the outer wall of the water inlet pipe 25. The drain solenoid valve 29 is communicated with the drain pipe 30 and is located at one end of the drain pipe 30.

[0033] Wherein, the waste heat recovery device for a chemical condenser further includes mounting columns 31 and a porous mounting plate 32. The number of the mounting columns 31 is multiple. Each mounting column 31 is fixedly connected to the recovery bin 3 and is respectively located on one side of the recovery bin 3. The porous mounting plate 32 is fixedly connected to the multiple mounting columns 31 and is located at one ends of the multiple mounting columns 31.

[0034] The working / implementing / using principle of the present invention is: the drain solenoid valve 27 and the water inlet solenoid valve 28 can control the transportation and discharge of water in the recovery bin 3. The drain solenoid valve 29 and the drain pipe 30 can quickly drain the accumulated water in the recovery bin 3, so as to achieve the purpose that there is no accumulated water in the recovery bin 3. The mounting columns 31 connect the porous mounting plate 32 and the recovery bin 3, and the porous mounting plate 32 realizes the multi-state mounting of the recovery bin 3, improving the adaptability and diversity of the mounting.

[0035] Example 3, please refer to Figure 7 , based on Example 2, a waste heat recovery device for a chemical condenser of the present invention, the waste heat recovery device for a chemical condenser further includes an air inlet chamber and an air exhaust chamber. The air inlet chamber is communicated with the recovery bin 3 and is located on one side of the recovery bin 3. The air exhaust chamber is communicated with the recovery bin 3 and is located on one side of the recovery bin 3, and the air inlet chamber and the air exhaust chamber are arranged opposite to each other.

[0036] Among them, the air inlet bin includes a first air inlet connecting pipe 33, an air inlet solenoid valve 34, a second air inlet connecting pipe 35, an air inlet box 36 and a fan connecting pipe 37. The number of the first air inlet connecting pipes 33 is multiple, and each of the air inlet connecting pipes is connected to the recovery bin 3 and is located on one side of the recovery bin 3 respectively. The number of the air inlet solenoid valves 34 is multiple, and each of the air inlet solenoid valves 34 is connected to the corresponding first air inlet connecting pipe 33 and is located at one end of the corresponding first air inlet connecting pipe 33 respectively. The number of the second air inlet connecting pipes 35 is multiple, and each of the second air inlet connecting pipes 35 is connected to the corresponding air inlet solenoid valve 34 and is located at one end of the corresponding air inlet solenoid valve 34 respectively. The air inlet box 36 is connected to the multiple second air inlet connecting pipes 35 and is located at one end of the multiple second air inlet connecting pipes 35. The fan connecting pipe 37 is connected to the air inlet box 36 and is located on one side of the air inlet box 36.

[0037] Among them, the air exhaust bin includes a first air exhaust connecting pipe 38, an air exhaust solenoid valve 39, a second air exhaust connecting pipe 40, an air exhaust box 41 and a warm air pipe 42. The number of the first air exhaust connecting pipes 38 is multiple, and each of the air exhaust connecting pipes is connected to the recovery bin 3 and is located on one side of the recovery bin 3 respectively. The number of the air exhaust solenoid valves 39 is multiple, and each of the air exhaust solenoid valves 39 is connected to the corresponding first air exhaust connecting pipe 38 and is located at one end of the corresponding first air exhaust connecting pipe 38 respectively. The number of the second air exhaust connecting pipes 40 is multiple, and each of the second air exhaust connecting pipes 40 is connected to the corresponding air exhaust solenoid valve 39 and is located at one end of the corresponding air exhaust solenoid valve 39 respectively. The air exhaust box 41 is connected to the multiple second air exhaust connecting pipes 40 and is located at one end of the multiple second air exhaust connecting pipes 40. The warm air pipe 42 is connected to the air exhaust box 41 and is located on one side of the air exhaust box 41.

[0038] Among them, the chemical condenser waste heat recovery device further includes auxiliary plates 43. The number of the auxiliary plates 43 is two, and the two auxiliary plates 43 are fixedly connected to the recovery bin 3 respectively and are located on both sides of the recovery bin 3, and the two auxiliary plates 43 are respectively located at the lower ends of the corresponding air exhaust box 41 and the air inlet box 36.

[0039] The working / implementing / using principle of the present invention is as follows: Close the water inlet solenoid valve 28 and the drain solenoid valve 27 to make the recovery bin 3 form a closed structure, and open the drain solenoid valve 29 to discharge the water inside the recovery bin 3 through the drain pipe 30 until there is no accumulated water inside the recovery bin 3, then close the drain solenoid valve 29 to form a closed structure again. Open the air inlet solenoid valve 34 and the exhaust solenoid valve 39, and supply normal temperature gas through the fan connecting pipe 37 into the air inlet box 36, and then enter the recovery bin 3 through the first air inlet connecting pipe 33, the air inlet solenoid valve 34 and the second air inlet connecting pipe 35. The temperature on the fins 2 is taken away by air cooling to form hot air, and enters the exhaust air box 41 through the second exhaust air connecting pipe 40, the exhaust solenoid valve 39 and the first exhaust air connecting pipe 38, and finally is conveyed to the warm air channel through the warm air pipe 42. At the same time, the auxiliary plate 43 supports the air inlet box 36 and the exhaust air box 41. Through air cooling and condensation, the conversion of normal temperature air into warm air for supply is realized, so that the free conversion between water cooling and air cooling can be carried out, and the corresponding mode can be selected according to needs.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A chemical condenser waste heat recovery device, characterized in that It includes heat exchange tubes, fins, a recovery bin, an intake connecting pipe, an exhaust connecting pipe, a water inlet pipe and a drain pipe. The number of the fins is multiple. Each fin is fixedly connected to the heat exchange tube and sleeved on the outer wall of the heat exchange tube. The intake connecting pipe is communicated with the heat exchange tube and located at one end of the heat exchange tube. The exhaust connecting pipe is communicated with the heat exchange tube and located at the end of the heat exchange tube far from the intake connecting pipe. The heat exchange tube is arranged inside the recovery bin. The water inlet pipe is communicated with the recovery bin and located on one side of the recovery bin. The drain pipe is communicated with the recovery bin and located on one side of the recovery bin; The intake connecting pipe includes an intake main pipe, an intake side pipe, a driving piston assembly and an intake solenoid valve. The intake main pipe is communicated with the heat exchange tube and located at one end of the heat exchange tube. The intake side pipe is communicated with the intake main pipe and located on the outer wall of the intake main pipe. The intake solenoid valve is communicated with the intake side pipe and located at one end of the intake side pipe. The driving piston assembly is fixedly connected to the recovery bin and located at the upper end of the recovery bin, and the output end of the driving piston assembly is embedded inside the intake main pipe; The driving piston assembly includes a bracket, a placement bin, a driving motor, a turntable, a centrifugal column, a connecting hanging ear, a connecting shaft, an intake rubber plug and a third sealing ring. The bracket is fixedly connected to the recovery bin and located at the upper end of the recovery bin. The placement bin is fixedly connected to the bracket and located at the lower end of the bracket. The driving motor is fixedly connected to the placement bin and located inside the placement bin. The turntable is fixedly connected to the output end of the driving motor and located on one side of the driving motor. The centrifugal column is fixedly connected to the turntable and located on the outer wall of the turntable. One end of the connecting shaft is rotatably connected to the centrifugal column and sleeved on the outer wall of the centrifugal column. The connecting hanging ear is rotatably connected to the connecting shaft and located at one end of the connecting shaft. The intake rubber plug is fixedly connected to the connecting hanging ear and located at one end of the connecting hanging ear. The number of the third sealing rings is multiple. Each third sealing ring is fixedly connected to the intake rubber plug and respectively embedded on the outer wall of the intake rubber plug, and the intake rubber plug is embedded inside the intake main pipe; The chemical condenser waste heat recovery device further includes an air inlet bin and an air exhaust bin. The air inlet bin is communicated with the recovery bin and located on one side of the recovery bin. The air exhaust bin is communicated with the recovery bin and located on one side of the recovery bin, and the air inlet bin and the air exhaust bin are arranged oppositely; The air inlet bin includes a first air inlet connecting pipe, an air inlet solenoid valve, a second air inlet connecting pipe, an air inlet box and a fan connecting pipe. The number of the first air inlet connecting pipes is multiple, and each first air inlet connecting pipe is respectively communicated with the recovery bin and is located on one side of the recovery bin. The number of the air inlet solenoid valves is multiple, and each air inlet solenoid valve is respectively communicated with the corresponding first air inlet connecting pipe and is located at one end of the corresponding first air inlet connecting pipe. The number of the second air inlet connecting pipes is multiple, and each second air inlet connecting pipe is respectively communicated with the corresponding air inlet solenoid valve and is located at one end of the corresponding air inlet solenoid valve. The air inlet box is communicated with the multiple second air inlet connecting pipes and is located at one end of the multiple second air inlet connecting pipes. The fan connecting pipe is communicated with the air inlet box and is located on one side of the air inlet box; The chemical condenser waste heat recovery device further includes mounting columns and a porous mounting plate. The number of the mounting columns is multiple, and each mounting column is respectively fixedly connected with the recovery bin and is located on one side of the recovery bin. The porous mounting plate is fixedly connected with the multiple mounting columns and is located at one end of the multiple mounting columns; Fill the scale cleaning agent into the interior of the heat exchange tube through the intake solenoid valve, and close the intake solenoid valve so that the heat exchange tube forms a sealed structure. The bracket supports the placement bin, and the placement bin supports the drive motor. Drive the drive motor to rotate, thereby driving the turntable, driving the centrifugal column to rotate centrifugally, and through the linkage of the connecting lugs and the connecting shaft, drive the intake rubber plug to perform a piston movement. After the outlet rubber plug is squeezed by the intake rubber plug, compress the spring to create a space gap, and drive the scale remover inside the heat exchange tube to move. The intake rubber plug performs a piston movement, causing the outlet rubber plug to also perform a piston movement. The spring is continuously compressed and stretched, causing the scale remover inside it to perform a reciprocating movement inside the heat exchange tube.

2. The waste heat recovery device for a chemical condenser according to claim 1, characterized in that, The chemical condenser waste heat recovery device further includes a drain solenoid valve, a water inlet solenoid valve, a drain water solenoid valve and a drain pipe. The drain solenoid valve is communicated with the drain pipe and is located at one end of the drain pipe. The water inlet solenoid valve is communicated with the water inlet pipe and is located at one end of the water inlet pipe. The drain pipe is communicated with the water inlet pipe and is located on the outer wall of the water inlet pipe. The drain water solenoid valve is communicated with the drain pipe and is located at one end of the drain pipe.

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