A flue gas waste heat recovery device

Abstract

The present application relates to the field of waste heat recovery technology, and discloses a flue gas waste heat recovery device, including a heat exchange shell, the upper end of the heat exchange shell is fixedly connected with a water inlet pipe, the lower end side wall of the heat exchange shell is symmetrically fixedly connected with two water outlet pipes, the opposite sides of the heat exchange shell are respectively fixedly connected with an air inlet pipe and an air outlet pipe, one end of the air inlet pipe and the air outlet pipe located in the heat exchange shell is fixedly connected with the same serpentine heat exchange pipe, and the lower end of the heat exchange shell is fixedly provided with a two-way driving mechanism for driving the air inlet pipe and the air outlet pipe to rotate. The present application can increase the heat exchange range and improve the heat exchange efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of waste heat recovery, and in particular relates to a flue gas waste heat recovery device. Background Art

[0002] Flue gas is a mixture of gas and smoke, and is the main cause of air pollution in residential areas. The composition of flue gas is very complex, including water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons and nitrogen oxides, etc. The smoke includes fuel ash, coal particles, oil droplets and high-temperature cracking products.

[0003] Flue gas contains a large amount of heat. Generally, if the flue gas is directly treated and then discharged, a large amount of heat contained in the flue gas will be directly dissipated into the air, causing a waste of resources. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problems and proposes a flue gas waste heat recovery device.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] A flue gas waste heat recovery device comprises a heat exchange shell, the upper end of the heat exchange shell is fixedly connected to a water inlet pipe, the lower end side wall of the heat exchange shell is symmetrically fixedly connected to two water outlet pipes, the opposite sides of the heat exchange shell are respectively fixedly connected to an air inlet pipe and an air outlet pipe, one end of the air inlet pipe and the air outlet pipe located in the heat exchange shell is fixedly connected to the same serpentine heat exchange pipe, and the lower end of the heat exchange shell is fixedly provided with a two-way driving mechanism for driving the air inlet pipe and the air outlet pipe to rotate.

[0007] Preferably, the bidirectional driving mechanism includes a dual-axis motor fixedly mounted on the lower end of the heat exchange shell, both output ends of the dual-axis motor are fixedly connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a driving sprocket, the pipe walls of the air inlet pipe and the air outlet pipe are fixedly sleeved with a driven sprocket, and the driving sprocket and the driven sprocket are externally sleeved with the same transmission chain.

[0008] Preferably, two bearing seats are symmetrically fixedly mounted on the lower end of the heat exchange shell, and the inner walls of the bearing seats are rotatably sleeved on the outside of the rotating shaft through ball bearings.

[0009] Preferably, a trigger round shell is fixedly installed on the lower end of the heat exchange shell, and a transmission shaft is rotatably connected to the center of the inner wall of the trigger round shell through a bearing. The lower end of the transmission shaft passes through the lower end of the trigger round shell and is fixedly connected to a large-diameter driven bevel gear. A small-diameter active bevel gear meshing with the large-diameter driven bevel gear is fixedly sleeved on the shaft wall of the rotating shaft, an extension rod is fixedly sleeved on the shaft wall of the transmission shaft, and one end of the extension rod is fixedly connected to an arc-shaped pressing block, and a trigger switch is fixedly installed on one side of the inner wall of the trigger round shell.

[0010] Preferably, the dual-axis motor is electrically connected to a power source of an external device via a control switch.

[0011] Preferably, the serpentine heat exchange tube is a copper alloy tube.

[0012] Compared with the prior art, this application provides a flue gas waste heat recovery device having the following features:

[0013] Beneficial effects:

[0014] 1. The flue gas waste heat recovery device is provided with a heat exchange shell and a heat exchange tube. The water inlet pipe and the water outlet pipe are used to supply water to the heat exchange shell. The air inlet pipe and the air outlet pipe are used to transport high-temperature flue gas. The serpentine heat exchange tube is used to exchange the heat of the flue gas with the water in the heat exchange shell, so as to make efficient use of the flue gas preheating. When exchanging heat, the double-axis motor is started, and the double-axis motor drives the active sprocket to rotate through the rotating shaft, and drives the driven sprocket to rotate synchronously through the transmission chain, thereby driving the air inlet pipe and the air outlet pipe to rotate synchronously, and then driving the serpentine heat exchange tube to rotate at a uniform speed in the heat exchange shell, thereby increasing the heat exchange range and improving the heat exchange efficiency.

[0015] 2. The flue gas waste heat recovery device, through the trigger round shell and the trigger switch, drives the small diameter active bevel gear to rotate synchronously while the shaft rotates. The meshing action of the small diameter active bevel gear and the large diameter driven bevel gear drives the transmission shaft to drive the extension rod and the arc-shaped pressing block to move slowly in the trigger round shell until the arc-shaped pressing block acts on the trigger switch. The trigger switch controls the water inlet pipe and the water outlet pipe to operate again to output the water after heat exchange in the heat exchange shell, and send it in through a new water source, so as to realize continuous heat exchange work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a flue gas waste heat recovery device proposed in this application;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a triggering circular shell of a flue gas waste heat recovery device proposed in this application.

[0018] In the figure: 1. heat exchange shell; 2. water inlet pipe; 3. water outlet pipe; 4. air inlet pipe; 5. air outlet pipe; 6. serpentine heat exchange tube; 7. double-axis motor; 8. rotating shaft; 9. driving sprocket; 10. driven sprocket; 11. transmission chain; 12. bearing seat; 13. trigger round shell; 14. transmission shaft; 15. large-diameter driven bevel gear; 16. small-diameter driving bevel gear; 17. extension rod; 18. arc-shaped pressing block; 19. trigger switch. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0020] Reference Figure 1-2 A flue gas waste heat recovery device comprises a heat exchange shell 1, the upper end of the heat exchange shell 1 is fixedly connected with a water inlet pipe 2, the lower end side wall of the heat exchange shell 1 is symmetrically fixedly connected with two water outlet pipes 3, the opposite sides of the heat exchange shell 1 are respectively fixedly connected with an air inlet pipe 4 and an air outlet pipe 5, one end of the air inlet pipe 4 and the air outlet pipe 5 located in the heat exchange shell 1 is fixedly connected with the same serpentine heat exchange pipe 6, and the lower end of the heat exchange shell 1 is fixedly provided with a two-way driving mechanism for driving the air inlet pipe 4 and the air outlet pipe 5 to rotate.

[0021] The bidirectional driving mechanism includes a double-axis motor 7 fixedly mounted at the lower end of the heat exchange shell 1, both output ends of the double-axis motor 7 are fixedly connected to a rotating shaft 8, one end of the rotating shaft 8 is fixedly connected to a driving sprocket 9, the pipe walls of the air inlet pipe 4 and the air outlet pipe 5 are fixedly sleeved with a driven sprocket 10, and the driving sprocket 9 and the driven sprocket 10 are externally sleeved with the same transmission chain 11.

[0022] Two bearing seats 12 are symmetrically fixedly mounted on the lower end of the heat exchange shell 1, and the inner wall of the bearing seat 12 is rotatably sleeved on the outside of the rotating shaft through a ball bearing.

[0023] A trigger round shell 13 is fixedly installed at the lower end of the heat exchange shell 1. A transmission shaft 14 is rotatably connected to the center of the inner wall of the trigger round shell 13 through a bearing. The lower end of the transmission shaft 14 passes through the lower end of the trigger round shell 13 and is fixedly connected to a large-diameter driven bevel gear 15. A small-diameter active bevel gear 16 meshing with the large-diameter driven bevel gear 15 is fixedly sleeved on the shaft wall of the rotating shaft. An extension rod 17 is fixedly sleeved on the shaft wall of the transmission shaft 14. One end of the extension rod 17 is fixedly connected to an arc-shaped pressing block 18. A trigger switch 19 is fixedly installed on one side of the inner wall of the trigger round shell 13.

[0024] The dual-axis motor 7 is electrically connected to a power source of the peripheral device through a control switch.

[0025] The serpentine heat exchange tube 6 is specifically a copper alloy tube.

[0026] The operating principle of the utility model is now described as follows:

[0027] When the present application is used, the heat exchange shell 1 and the heat exchange tube are provided, the water inlet pipe 2 and the water outlet pipe 3 are used to supply water to the heat exchange shell 1, the air inlet pipe 4 and the air outlet pipe 5 are used to transport the high-temperature flue gas, and the serpentine heat exchange tube 6 is used to exchange the heat of the flue gas with the water in the heat exchange shell 1, so as to make efficient use of the flue gas preheating. When exchanging heat, the double-axis motor 7 is started, and the double-axis motor 7 drives the active sprocket 9 to rotate through the rotating shaft 8, and drives the driven sprocket 10 to rotate synchronously through the transmission chain 11, thereby driving the air inlet pipe 4 and the air outlet pipe 5 to rotate synchronously, thereby driving the serpentine heat exchange tube 6 to rotate at a uniform speed in the heat exchange shell 1, thereby increasing the heat exchange rate. The heat range is improved, and the heat exchange efficiency is improved. Through the trigger round shell 13 and the trigger switch 19, the rotating shaft 8 drives the small-diameter active bevel gear 16 to rotate synchronously while the small-diameter active bevel gear 16 and the large-diameter driven bevel gear 15 are meshed, and the transmission shaft 14 drives the extension rod 17 and the arc-shaped pressing block 18 to move slowly in the trigger round shell 13 until the arc-shaped pressing block 18 acts on the trigger switch 19. The trigger switch 19 controls the water inlet pipe 2 and the water outlet pipe 3 to operate again to output the water after heat exchange in the heat exchange shell 1, and send it in through a new water source, so as to realize continuous heat exchange.

[0028] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and application concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A flue gas waste heat recovery device, comprising a heat exchange shell (1), characterized in that: The upper end of the heat exchange shell (1) is fixedly connected to a water inlet pipe (2), and the lower end side wall of the heat exchange shell (1) is symmetrically fixedly connected to two water outlet pipes (3). The opposite sides of the heat exchange shell (1) are respectively fixedly connected to an air inlet pipe (4) and an air outlet pipe (5), and one end of the air inlet pipe (4) and the air outlet pipe (5) located inside the heat exchange shell (1) is fixedly connected to the same serpentine heat exchange pipe (6). The lower end of the heat exchange shell (1) is fixedly provided with a bidirectional driving mechanism for driving the air inlet pipe (4) and the air outlet pipe (5) to rotate.

2. A flue gas waste heat recovery device according to claim 1, characterized in that: The bidirectional driving mechanism comprises a double-shaft motor (7) fixedly mounted at the lower end of the heat exchange shell (1), both output ends of the double-shaft motor (7) being fixedly connected to a rotating shaft (8), one end of the rotating shaft (8) being fixedly connected to a driving sprocket (9), the pipe walls of the air inlet pipe (4) and the air outlet pipe (5) being fixedly sleeved with a driven sprocket (10), and the driving sprocket (9) and the driven sprocket (10) being externally sleeved with a same transmission chain (11).

3. A flue gas waste heat recovery device according to claim 2, characterized in that: Two bearing seats (12) are symmetrically fixedly mounted on the lower end of the heat exchange shell (1), and the inner wall of the bearing seat (12) is rotatably sleeved on the outside of the rotating shaft via a ball bearing.

4. A flue gas waste heat recovery device according to claim 3, characterized in that: A triggering round shell (13) is fixedly mounted on the lower end of the heat exchange shell (1), and a transmission shaft (14) is rotatably connected to the center of the inner wall of the triggering round shell (13) via a bearing. The lower end of the transmission shaft (14) passes through the lower end of the triggering round shell (13) and is fixedly connected to a large-diameter driven bevel gear (15). A small-diameter driving bevel gear (16) meshing with the large-diameter driven bevel gear (15) is fixedly sleeved on the shaft wall of the rotating shaft. An extension rod (17) is fixedly sleeved on the shaft wall of the transmission shaft (14), and one end of the extension rod (17) is fixedly connected to an arc-shaped pressing block (18). A trigger switch (19) is fixedly mounted on one side of the inner wall of the triggering round shell (13).

5. The flue gas waste heat recovery device according to claim 4, characterized in that: The dual-axis motor (7) is electrically connected to a power source of an external device via a control switch.

6. A flue gas waste heat recovery device according to claim 5, characterized in that: The serpentine heat exchange tube (6) is specifically a copper alloy tube.

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