Flue gas waste heat recycling device

Abstract

The utility model discloses a flue gas waste heat recycling device which comprises a cooling box, a smoke inlet pipe is fixedly connected to the top of the cooling box, a heat absorption assembly is arranged in the cooling box, and a first filter box is arranged on one side of the cooling box. The utility model aims to solve the problem that waste heat generated by flue gas of a traditional kiln cannot be properly recycled generally, so that energy is wasted, some kilns are provided with heat exchangers, but the heat exchangers generally adopt cold water to absorb the waste heat, and the cold water generally adopts tap water, so that the energy is wasted. However, substances contained in tap water circulate in a pipeline in the heat exchanger for a long time, so that scale is generated in the pipeline, the pipeline of the heat exchanger is blocked, the working efficiency of the heat exchanger is further reduced, and harmful substances such as sulfur dioxide, nitric oxide and particulate matters in flue gas of a traditional kiln can be directly discharged into the atmosphere. Air pollution is caused, and harm to human health and ecological environment is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling, in particular to a flue gas waste heat recycling device. Background Art

[0002] Various new energy-saving advanced furnace types are becoming more and more perfect, and the use of high-quality insulation materials such as new refractory fibers has significantly reduced the heat loss of the furnace. The use of advanced combustion devices has strengthened combustion, reduced incomplete combustion, and the air-fuel ratio has also become more reasonable.

[0003] The waste heat generated by traditional kiln flue gas is generally not properly recycled, resulting in energy waste. Some kilns are equipped with heat exchangers, but the heat exchangers generally use cold water to absorb the waste heat. The cold water here is generally tap water, but the substances contained in tap water will cause scale to appear inside the pipes if they circulate in the internal pipes of the heat exchanger for a long time, thereby clogging the pipes of the heat exchanger, thereby reducing the working efficiency of the heat exchanger. In addition, harmful substances in traditional kiln flue gas such as sulfur dioxide, nitrogen oxides, particulate matter, etc. will be directly discharged into the atmosphere, causing air pollution and harming human health and the ecological environment. Utility Model Content

[0004] The purpose of the utility model is to provide a flue gas waste heat recovery and utilization device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a cooling box, a smoke inlet pipe is fixedly connected to the top of the cooling box, a heat absorption component is arranged inside the cooling box, a first filter box is arranged on one side of the cooling box, a connecting pipe is fixedly connected between the top of the first filter box and the cooling box, a water inlet pipe is fixedly connected to one side of the first filter box, a fixing plate is slidably connected to the inside of the first filter box, a filter screen is arranged inside the fixing plate, a fixing block is fixedly connected to one side of the first filter box, a slide groove is arranged inside the fixing block, and the inside of the slide groove A limiting component is provided on the cooling box, a second filter box is provided on one side of the cooling box, a first smoke pipe is fixedly connected between one side of the cooling box and the second filter box, a mounting plate is slidably connected inside the second filter box, activated carbon plates are equidistantly arranged inside the mounting plate, a smoke extractor is provided on one side of the second filter box, a smoke collecting box is provided on one side of the smoke extractor, a chimney is fixedly connected to the top of the smoke collecting box, a second smoke pipe is provided between the second filter box, the smoke extractor and the smoke collecting box, vertical plates are fixedly connected to the inside of the mounting plate at equidistant intervals, and the activated carbon plates are slidably connected between the vertical plates.

[0006] As a further preferred embodiment of the present technical solution, the heat absorption component includes a heat absorption tube, which is spirally arranged inside the cooling box, one end of the connecting tube is fixedly connected to one end of the heat absorption tube, and the other end of the heat absorption tube is fixedly connected to a water outlet pipe, a water pump is provided on one side of the cooling box, and an end of the water outlet pipe away from the heat absorption tube is fixedly installed on one side of the water pump.

[0007] As a further preferred embodiment of the present technical solution, the heat absorption component further comprises a transverse plate, the transverse plate is fixedly connected to the interior of the cooling box, and a smoke outlet is formed through the surface of the transverse plate.

[0008] As a further preferred embodiment of the present technical solution, the limit assembly includes a slider, the slider is slidably connected to the inside of the slide groove, and a spring is fixedly connected between one side of the slider and the inner wall of the slide groove.

[0009] As a further preferred embodiment of the present technical solution, the limit assembly also includes a card block, which is slidably connected to the inside of the fixed block, one end of the card block is fixedly connected to one side of the slider, and a card slot is provided on one side of the fixed plate close to the fixed block, and one end of the card block extends to the inside of the card slot.

[0010] As a further preferred embodiment of the present technical solution, a limiting groove is provided on the top surface of the fixed block, a shift rod is slidably connected inside the limiting groove, and one end of the shift rod is fixedly connected to the top of the slider.

[0011] As a further preferred embodiment of the present technical solution, one end of the block is provided with an inclined surface.

[0012] The utility model provides a flue gas waste heat recovery and utilization device, which has the following beneficial effects:

[0013] (1) The utility model allows cold water to pass through a water inlet pipe and a filter screen for filtration, and then enter the heat absorption component through a connecting pipe. At this time, by starting the heat absorption component, the flue gas can be retained in the cooling box for a period of time, so that the cold water in the heat absorption component can better absorb the heat contained in the flue gas. The heated water can be used for other purposes, and the problem of pipeline blockage caused by unfiltered water is avoided, thereby increasing the practicality of the device.

[0014] (2) The utility model starts the smoke extractor to allow the smoke to enter the second filter box through the first smoke pipe, so that harmful substances in the smoke are adsorbed by multiple activated carbon plates. The purified smoke then enters the smoke collection box through the smoke extractor and is finally discharged through the chimney, thus avoiding the problem of environmental pollution.

[0015] (3) The utility model can quickly and conveniently release the fixation of the filter by toggling the limit assembly. Then, when installing the filter, the fixing plate is directly inserted into the interior of the first filter box, and then the limit assembly can automatically fix the filter, thereby increasing the installation convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the cooling box of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the limit assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the second filter box of the utility model;

[0020] In the figure: 1. cooling box; 2. smoke inlet pipe; 3. connecting pipe; 4. first filter box; 5. water inlet pipe; 6. slot; 7. fixing plate; 8. filter; 9. first smoke pipe; 10. fixing block; 11. mounting plate; 12. activated carbon plate; 13. smoke collecting box; 14. chimney; 15. range hood; 16. second smoke pipe; 17. second filter box; 18. water outlet pipe; 19. water pump; 20. heat absorbing pipe; 21. smoke outlet; 22. horizontal plate; 23. lever; 24. block; 25. slider; 26. spring; 27. slide groove; 28. limit groove; 29. ​​vertical plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1-Figure 4As shown, in this embodiment, the flue gas waste heat recovery and utilization device includes a cooling box 1, a smoke inlet pipe 2 is fixedly connected to the top of the cooling box 1, a heat absorption component is arranged inside the cooling box 1, a first filter box 4 is arranged on one side of the cooling box 1, a connecting pipe 3 is fixedly connected between the top of the first filter box 4 and the cooling box 1, a water inlet pipe 5 is fixedly connected to one side of the first filter box 4, a fixed plate 7 is slidably connected to the inside of the first filter box 4, a filter screen 8 is arranged inside the fixed plate 7, a fixed block 10 is fixedly connected to one side of the first filter box 4, a slide groove 27 is opened inside the fixed block 10, a limit position component is arranged inside the slide groove 27, and the cooling box 1 is provided with a first filter box 4. A second filter box 17 is provided on one side of the box 1, a first smoke pipe 9 is fixedly connected between one side of the cooling box 1 and the second filter box 17, a mounting plate 11 is slidably connected inside the second filter box 17, activated carbon plates 12 are equidistantly arranged inside the mounting plate 11, a smoke extractor 15 is provided on one side of the second filter box 17, a smoke collecting box 13 is provided on one side of the smoke extractor 15, a chimney 14 is fixedly connected to the top of the smoke collecting box 13, a second smoke pipe 16 is provided between the second filter box 17, the smoke extractor 15 and the smoke collecting box 13, vertical plates 29 are equidistantly fixedly connected inside the mounting plate 11, and the activated carbon plates 12 are slidably connected between the vertical plates 29.

[0023] First, the smoke generated by the kiln enters the interior of the cooling box 1 through the smoke inlet pipe 2, and then the cold water passes through the water inlet pipe 5 and is filtered through the filter screen 8, and then enters the heat absorption component through the connecting pipe 3. At this time, the heat absorption component is started to allow the smoke to be retained in the cooling box 1 for a period of time, so that the cold water inside the heat absorption component can better absorb the heat contained in the smoke. In this way, the heated water can be used for other purposes, and the problem of pipeline blockage caused by unfiltered water is avoided, thereby increasing the practicality of the device. At this time, the heat in the smoke has been absorbed, and the smoke extractor 15 is started to allow the smoke to enter the second filter box 17 through the first smoke pipe 9. Inside, harmful substances in the flue gas are adsorbed by multiple activated carbon plates 12, and then the purified flue gas enters the smoke collecting box 13 through the smoke extractor 15, and is finally discharged through the chimney 14, thus avoiding the problem of environmental pollution. Then, the activated carbon plate 12 can be replaced more conveniently through the mounting plate 11 and the vertical plate 29, and then when the filter 8 is replaced, the filter 8 can be quickly and conveniently released by toggling the limit assembly, and then when installing the filter 8, it is directly inserted into the first filter box 4 through the fixing plate 7, and then the limit assembly can automatically fix the filter 8, thereby increasing the installation convenience of the device.

[0024] like Figure 1-Figure 4As shown, the heat absorption component includes a heat absorption tube 20, which is spirally arranged inside the cooling box 1, one end of the connecting tube 3 is fixedly connected to one end of the heat absorption tube 20, and the other end of the heat absorption tube 20 is fixedly connected to a water outlet pipe 18, a water pump 19 is arranged on one side of the cooling box 1, and one end of the water outlet pipe 18 away from the heat absorption tube 20 is fixedly installed on one side of the water pump 19, and the heat absorption component also includes a horizontal plate 22, which is fixedly connected to the inside of the cooling box 1, and a smoke outlet hole 21 is opened on the surface of the horizontal plate 22.

[0025] When absorbing the heat of the flue gas, cold water enters the heat absorption tube 20 through the spiral shape of the heat absorption tube 20, so that the heat in the flue gas can be better contacted. Then, the horizontal plate 22 has a certain blocking effect on the flue gas, which increases the retention time inside the cooling box 1, thereby further increasing the heat absorption performance of the device. Then, the hot water absorbed by the heat absorption tube 20 is extracted by starting the water pump 19, so that it can be used for subsequent domestic water.

[0026] like Figure 1-Figure 4 As shown, the limit assembly includes a slider 25, which is slidably connected to the inside of the slide groove 27, and a spring 26 is fixedly connected between one side of the slider 25 and the inner wall of the slide groove 27. The limit assembly also includes a clamping block 24, which is slidably connected to the inside of the fixed block 10, and one end of the clamping block 24 is fixedly connected to one side of the slider 25. A clamping groove 6 is provided on the side of the fixed plate 7 close to the fixed block 10, and one end of the clamping block 24 extends to the inside of the clamping groove 6. A limit groove 28 is provided on the top surface of the fixed block 10, and a lever 23 is slidably connected to the inside of the limit groove 28, and one end of the lever 23 is fixedly connected to the top of the slider 25, and one end of the clamping block 24 is provided with an inclined surface.

[0027] When replacing the filter 8, the lever 23 is pushed to slide inside the limit groove 28, thereby driving the slider 25 to move and driving the block 24 to disengage from the inside of the groove 6. At this time, the handle on one side of the fixing plate 7 is pulled to drive the filter 8 to disengage from the inside of the first filter box 4. Then, when installing a new filter 8, it is inserted into the inside of the first filter box 4 through the fixing plate 7. Then, one side of the fixing plate 7 contacts with the inclined surface of the block 24, thereby driving the block 24 to move and driving the slider 25 to compress the spring 26. Then, when the groove 6 moves to one side of the block 24, the block 24 is automatically driven into the inside of the groove 6 under the reaction of the spring 26, thereby completing the fixation of the filter 8.

[0028] The utility model provides a flue gas waste heat recovery and utilization device, and the specific working principle is as follows: first, the flue gas generated by the kiln enters the interior of the cooling box 1 through the smoke inlet pipe 2, and then the cold water passes through the water inlet pipe 5 and passes through the filter screen 8 for filtering, and then enters the interior of the heat absorption component through the connecting pipe 3. At this time, the cold water is started to enter the interior of the heat absorption pipe 20, and then the spiral shape of the heat absorption pipe 20 can better contact with the flue gas, so as to better absorb the heat in the flue gas, and then the cross plate 22 is used to block the flue gas to a certain extent, so that the retention time in the cooling box 1 is increased, thereby further increasing the heat absorption performance of the device, and then the hot water that has absorbed heat in the heat absorption pipe 20 is extracted by starting the water pump 19, so as to be used for subsequent domestic water, and then, the heat in the flue gas has been completely absorbed, and the smoke extractor 15 is started to let the flue gas enter the interior of the second filter box 17 through the first smoke pipe 9, so that harmful substances in the flue gas are removed through multiple activated carbon plates 12. The smoke is then adsorbed, and then the purified smoke enters the smoke collecting box 13 through the smoke extractor 15, and is finally discharged through the chimney 14, thus avoiding the problem of causing pollution to the environment. Then, the activated carbon plate 12 can be replaced more conveniently through the mounting plate 11 and the vertical plate 29. Then, when replacing the filter 8, the lever 23 is pushed to slide in the limiting groove 28, thereby driving the slider 25 to move and driving the block 24 to disengage from the inside of the groove 6. At this time, the handle on one side of the fixing plate 7 is pulled to drive the filter 8 to disengage from the inside of the first filter box 4. Then, when installing a new filter 8, the fixing plate 7 is inserted into the inside of the first filter box 4, and then one side of the fixing plate 7 contacts with the inclined surface of the block 24, thereby driving the block 24 to move and driving the slider 25 to compress the spring 26. Then, when the groove 6 moves to one side of the block 24, the block 24 is automatically driven into the inside of the groove 6 under the reaction of the spring 26, thereby completing the fixing of the filter 8.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas waste heat recovery and utilization device, comprising a cooling box (1), characterized in that: The top of the cooling box (1) is fixedly connected to a smoke inlet pipe (2), a heat absorption component is arranged inside the cooling box (1), a first filter box (4) is arranged on one side of the cooling box (1), a connecting pipe (3) is fixedly connected between the top of the first filter box (4) and the cooling box (1), a water inlet pipe (5) is fixedly connected to one side of the first filter box (4), a fixed plate (7) is slidably connected inside the first filter box (4), a filter screen (8) is arranged inside the fixed plate (7), a fixed block (10) is fixedly connected to one side of the first filter box (4), a slide groove (27) is provided inside the fixed block (10), a limit position component is arranged inside the slide groove (27), and a second filter box is arranged on one side of the cooling box (1). (17), a first smoke pipe (9) is fixedly connected between one side of the cooling box (1) and the second filter box (17), a mounting plate (11) is slidably connected inside the second filter box (17), activated carbon plates (12) are equidistantly arranged inside the mounting plate (11), a smoke extractor (15) is arranged on one side of the second filter box (17), a smoke collecting box (13) is arranged on one side of the smoke extractor (15), a chimney (14) is fixedly connected to the top of the smoke collecting box (13), a second smoke pipe (16) is arranged between the second filter box (17), the smoke extractor (15) and the smoke collecting box (13), vertical plates (29) are equidistantly fixedly connected inside the mounting plate (11), and the activated carbon plates (12) are slidably connected between the vertical plates (29).

2. The flue gas waste heat recovery and utilization device according to claim 1 is characterized in that: The heat absorption component comprises a heat absorption pipe (20), the heat absorption pipe (20) is spirally arranged inside the cooling box (1), one end of the connecting pipe (3) is fixedly connected to one end of the heat absorption pipe (20), the other end of the heat absorption pipe (20) is fixedly connected to a water outlet pipe (18), a water pump (19) is arranged on one side of the cooling box (1), and one end of the water outlet pipe (18) away from the heat absorption pipe (20) is fixedly installed on one side of the water pump (19).

3. The flue gas waste heat recovery and utilization device according to claim 1 is characterized in that: The heat absorption component also includes a transverse plate (22), the transverse plate (22) is fixedly connected to the inside of the cooling box (1), and a smoke outlet hole (21) is opened through the surface of the transverse plate (22).

4. The flue gas waste heat recovery and utilization device according to claim 1 is characterized in that: The limiting assembly comprises a slider (25), the slider (25) is slidably connected inside a slide groove (27), and a spring (26) is fixedly connected between one side of the slider (25) and the inner wall of the slide groove (27).

5. The flue gas waste heat recovery and utilization device according to claim 4 is characterized in that: The limit assembly further comprises a clamping block (24), wherein the clamping block (24) is slidably connected to the interior of the fixed block (10), one end of the clamping block (24) is fixedly connected to one side of the sliding block (25), a clamping groove (6) is provided on a side of the fixed plate (7) close to the fixed block (10), and one end of the clamping block (24) extends to the interior of the clamping groove (6).

6. The flue gas waste heat recovery and utilization device according to claim 4 is characterized in that: A limiting groove (28) is provided on the top surface of the fixed block (10), a lever (23) is slidably connected inside the limiting groove (28), and one end of the lever (23) is fixedly connected to the top of the sliding block (25).

7. The flue gas waste heat recovery and utilization device according to claim 5, characterized in that: One end of the clamping block (24) is provided with an inclined surface.

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