Waste heat exchange device and waste heat boiler

Abstract

The utility model discloses a waste heat exchange device and a waste heat boiler, and relates to the technical field of waste heat exchange boilers, the waste heat exchange device comprises a waste heat boiler shell, a filter box and a filter screen. The flow guide assembly can enable high-temperature flue gas to sequentially penetrate through gaps of a first flow guide plate and a second flow guide plate after entering the waste heat boiler shell, so that the contact area of the high-temperature flue gas and the outer wall of the flow dividing branch pipe is increased, and the heat exchange efficiency of the high-temperature flue gas and water is improved; a pressing plate is repeatedly pressed and then loosened, a cleaning brush can be driven to move up and down to clean dust on the surface of the filter screen, the cleaned dust is discharged outwards along a gap between the bottom of the filter box and a rotating plate, so that the dust cleaning convenience of the filter screen is improved, a baffle is arranged, and the baffle can cover a T-shaped sliding groove all the time in the dust cleaning period; therefore, dust is prevented from falling into and accumulating in the T-shaped sliding groove.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat exchange boilers, in particular to a waste heat exchange device and a waste heat boiler. Background Art

[0002] A waste heat boiler is a boiler that uses the waste heat in waste gas, waste materials or waste liquids from various industrial processes and the heat generated by the combustion of combustible substances to heat water to a certain temperature. A waste heat boiler can greatly improve the utilization rate of heat released by fuel combustion. When a waste heat boiler uses the heat in the waste gas to heat water, the dust and impurities carried in the waste gas are easily accumulated inside the pipe, causing the pipe to be blocked. Usually, a filter is set to clean the waste gas in advance to improve the heating efficiency.

[0003] For example, a water-tube waste heat steam boiler with high heat exchange efficiency is disclosed in the utility model with authorization announcement number CN221076436U. A filter screen is set to filter the flue gas passing through the flue inlet. After being filtered by the filter screen, the flue gas enters the boiler shell from the connecting pipe and the smoke passage. Water enters the diverter plate from the water inlet and flows into each diverter branch pipe, and then flows out from the collecting plate and the water outlet. Through multiple diverter branch pipes, the contact area between the pipeline and the high-temperature flue gas can be increased, thereby accelerating the heat exchange rate.

[0004] This prior art also has the following problems when used:

[0005] After the high-temperature flue gas of the device enters the boiler shell along the center of the collecting plate, most of the high-temperature flue gas moves directly upward and enters the flue outlet along the center of the diversion plate, making it difficult for the high-temperature flue gas to fully contact the outer wall of the diversion branch pipe for heat exchange. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a waste heat heat exchange device and a waste heat boiler to solve the technical problems mentioned in the above background.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a waste heat heat exchange device and a waste heat boiler, comprising a waste heat boiler shell, a filter box and a filter screen, wherein the filter box is arranged outside the waste heat boiler shell, and the filter screen is installed on the side of the filter box;

[0008] The flow guide component is arranged inside the shell of the waste heat boiler, and the flow guide component can improve the efficiency of heat exchange between high-temperature flue gas and water;

[0009] The dust cleaning component is arranged inside and on the top of the filter box, and the dust cleaning component can conveniently clean the surface of the filter screen;

[0010] The baffle is arranged inside the filter box, and the baffle can prevent dust from accumulating at the bottom of the filter box.

[0011] As a preferred technical solution of the present utility model, an air inlet pipe is communicated with one side of the filter box away from the filter net, a connecting pipe is communicated with one side of the filter box close to the filter net, one end of the connecting pipe away from the filter box is communicated to the bottom of the waste heat boiler shell, an air outlet pipe is communicated with the top of the waste heat boiler shell, a flow dividing plate and a flow collecting plate are fixedly arranged inside the waste heat boiler shell, a plurality of flow dividing branch pipes are communicated between the flow dividing plate and the flow collecting plate, a water inlet pipe and a water outlet pipe are respectively communicated with the outer sides of the flow dividing plate and the flow collecting plate, and the water inlet pipe and the water outlet pipe respectively penetrate through the waste heat boiler shell and are fixedly connected with the waste heat boiler shell.

[0012] As a preferred technical solution of the present utility model, the flow guiding assembly includes a first flow guiding plate, a second flow guiding plate, through holes and notches. A plurality of first flow guiding plates and second flow guiding plates are arranged at intervals on the inner wall of the waste heat boiler shell, and the inner wall of the waste heat boiler shell is fixedly connected with the outer sides of the first flow guiding plate and the second flow guiding plate respectively. A plurality of through holes adapted to the flow dividing branch pipes are arranged through the top surfaces of the first flow guiding plate and the second flow guiding plate, the flow dividing branch pipes are respectively slidably connected with the first flow guiding plate and the second flow guiding plate through the through holes, and notches are arranged on the side surfaces of the first flow guiding plate and the second flow guiding plate.

[0013] As a preferred technical solution of the present utility model, the ash cleaning assembly includes a pressing plate, a lifting rod, a return spring, a rotating plate, a lifting plate, a cleaning brush and a T-shaped slider. A pressing plate is arranged above the filter box, a lifting rod and a return spring are fixedly arranged on the bottom surface of the pressing plate, a lifting plate is fixedly arranged on the outer side of the lifting rod, a cleaning brush is fixedly installed on one side of the lifting plate close to the filter net, the bottom surface of the lifting rod is hinged with a T-shaped slider, and the bottom surface of the filter box is hinged with a rotating plate.

[0014] As a preferred technical solution of the present utility model, the lifting rod penetrates through the filter box and is slidably connected with the filter box, one end of the return spring away from the pressing plate is fixedly connected with the top surface of the filter box, a T-shaped sliding groove adapted to the T-shaped slider is arranged on the top surface of the rotating plate, and the T-shaped slider is slidably connected with the rotating plate through the T-shaped sliding groove.

[0015] As a preferred technical solution of the present utility model, symmetric baffles are fixedly arranged on the left and right sides of the T-shaped slider, and the baffles are slidably connected with the rotating plate.

[0016] Compared with the prior art, the beneficial effects that the present utility model can achieve are:

[0017] The utility model increases the contact area between high-temperature flue gas and the outer wall of the shunt branch pipe and improves the heat exchange efficiency between high-temperature flue gas and water by arranging a diversion component, which enables the high-temperature flue gas to pass through the gaps of the first diversion plate and the second diversion plate in sequence after entering the inner part of the waste heat boiler shell. By arranging a dust cleaning component, repeatedly pressing and then releasing the pressing plate can drive the cleaning brush to move up and down to clean the surface of the filter screen, and the cleaned dust is discharged outwards along the gap between the bottom of the filter box and the rotating plate, thereby improving the convenience of cleaning the filter screen. By arranging a baffle plate, the baffle plate can always cover the T-shaped chute during dust cleaning, thus preventing dust from falling into and accumulating inside the T-shaped chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 is a schematic sectional view of the main structure of the utility model;

[0020] Figure 3 is a schematic diagram of the structure of the diversion component of the utility model;

[0021] Figure 4 is a schematic diagram of the structure during dust cleaning of the dust cleaning component of the utility model;

[0022] Wherein: 1. Waste heat boiler shell; 2. Filter box; 3. Intake pipe; 4. Connecting pipe; 5. Outlet pipe; 6. Outlet water pipe; 7. Inlet water pipe; 8. Pressing plate; 9. Lifting rod; 10. Return spring; 11. Rotating plate; 12. Shunt disk; 13. Shunt branch pipe; 14. Collector disk; 15. First diversion plate; 16. Second diversion plate; 17. Through hole; 18. Notch; 19. Filter screen; 20. Lifting plate; 21. Cleaning brush; 22. Baffle plate; 23. T-shaped slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the following combines specific embodiments to further elaborate the utility model. However, the following embodiments are only the preferred embodiments of the utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the utility model.

[0024] Embodiment

[0025] Please refer to Figure 1 - Figure 2As shown in the figure, the utility model provides a waste heat exchange device and a waste heat boiler, which include a waste heat boiler housing 1, a filter box 2 and a filter screen 19. Four corners at the bottom of the waste heat boiler housing 1 are fixedly installed with first support legs. The top and bottom of the waste heat boiler housing 1 are respectively communicated with an air outlet pipe 5 and a connecting pipe 4. One end of the connecting pipe 4 far away from the waste heat boiler housing 1 is communicated with the filter box 2. Symmetric second support legs are fixedly arranged on the front and rear sides of the filter box 2. One end of the filter box 2 far away from the connecting pipe 4 is communicated with an air inlet pipe 3. A filter screen 19 is installed on one side of the filter box 2 close to the connecting pipe 4. The filter screen 19 covers the connecting pipe 4 and can filter the high-temperature flue gas entering the connecting pipe 4. Inside the waste heat boiler housing 1, a flow dividing plate 12 and a flow collecting plate 14 are fixedly arranged. A plurality of flow dividing branch pipes 13 are communicated between the flow dividing plate 12 and the flow collecting plate 14. The outer sides of the flow dividing plate 12 and the flow collecting plate 14 are respectively communicated with a water inlet pipe 7 and a water outlet pipe 6. The water inlet pipe 7 and the water outlet pipe 6 respectively penetrate through the waste heat boiler housing 1 and are fixedly connected with the waste heat boiler housing 1. At the central positions of the flow dividing plate 12 and the flow collecting plate 14, a first through groove communicated to the bottom of the waste heat boiler housing 1 and a second through groove communicated to the top of the waste heat boiler housing 1 are respectively arranged. The cooperation of the waste heat boiler housing 1 and the filter box 2 can facilitate the heat exchange between the high-temperature flue gas and water.

[0026] Specifically, the high-temperature flue gas enters the inside of the filter box 2 through the air inlet pipe 3. After being filtered by the filter screen 19, the high-temperature flue gas sequentially enters the inside of the waste heat boiler housing 1 along the connecting pipe 4 and the first through groove, and then enters the air outlet pipe 5 through the second through groove and is discharged outwards. Water is injected into the inside of the waste heat boiler housing 1 through the water inlet pipe 7 and sequentially enters the water outlet pipe 6 along the flow dividing plate 12, the flow dividing branch pipes 13 and the flow collecting plate 14 and is discharged outwards. When the high-temperature flue gas contacts the flow dividing branch pipes 13 inside the waste heat boiler housing 1, it can transfer the heat to the water inside the flow dividing branch pipes 13 through the flow dividing branch pipes 13, so as to increase the temperature of the water, thereby realizing heat transfer.

[0027] Such as Figure 1 - Figure 3As shown in the figure, a diversion component is arranged inside the waste heat boiler shell 1. The diversion component is composed of a first diversion plate 15, a second diversion plate 16, a through hole 17, and a notch 18. A plurality of first diversion plates 15 and second diversion plates 16 are arranged at intervals on the inner wall of the waste heat boiler shell 1. The inner wall of the waste heat boiler shell 1 is fixedly connected to the outer sides of the first diversion plate 15 and the second diversion plate 16 respectively. A plurality of through holes 17 adapted to the shunt branch pipes 13 are arranged through the top surfaces of the first diversion plate 15 and the second diversion plate 16. The shunt branch pipes 13 respectively penetrate through the first diversion plate 15 and the second diversion plate 16 through the through holes 17 and are slidably connected to the first diversion plate 15 and the second diversion plate 16. Notches 18 are arranged on the sides of the first diversion plate 15 and the second diversion plate 16. The notches 18 can facilitate the high-temperature flue gas below the waste heat boiler shell 1 to pass through the notches 18 and enter above the first diversion plate 15 and the second diversion plate 16. The first diversion plate 15 and the second diversion plate 16 are arranged at intervals to guide the flow of the high-temperature flue gas, so that the high-temperature flue gas fully contacts the outer wall of the shunt branch pipe 13, thereby increasing the contact area between the high-temperature flue gas and the outer wall of the shunt branch pipe 13 and improving the heat exchange efficiency between the high-temperature flue gas and water.

[0028] As Figure 1 - Figure 4As shown in the figure, a dust cleaning component is arranged inside and on the top of the filter box 2. The dust cleaning component is composed of a pressing plate 8, a lifting rod 9, a return spring 10, a rotating plate 11, a lifting plate 20, a cleaning brush 21 and a T-shaped slider 23. The bottom surface of the filter box 2 is open, and a rotating plate 11 is hinged to the bottom surface of the filter box 2. A pressing plate 8 is arranged above the filter box 2. A lifting rod 9 and a return spring 10 are fixedly arranged on the bottom surface of the pressing plate 8. The lifting rod 9 penetrates through the filter box 2 and is slidably connected with the filter box 2. One end of the return spring 10 far from the pressing plate 8 is fixedly connected with the top surface of the filter box 2. A lifting plate 20 is fixedly arranged on the outer side of the lifting rod 9. A cleaning brush 21 is fixedly installed on one side of the lifting plate 20 close to the filter net 19. A T-shaped slider 23 is hinged to the bottom surface of the lifting rod 9. A T-shaped sliding groove adapted to the T-shaped slider 23 is arranged on the top surface of the rotating plate 11. The T-shaped slider 23 is slidably connected with the rotating plate 11 through the T-shaped sliding groove. During the process that the high-temperature flue gas enters the waste heat boiler shell 1 from the filter box 2, the return spring 10 pushes the pressing plate 8 to make the rotating plate 11 tightly press against the bottom of the filter box 2, so as to prevent the high-temperature flue gas from leaking out through the connection part between the filter box 2 and the rotating plate 11. A heat-resistant rubber soft pad is pasted on the top surface of the rotating plate 11. When the rotating plate 11 tightly presses against the filter box 2, the rubber soft pad is pressed and deformed, so that when the rotating plate 11 slightly rotates downward due to the inflation inside the filter box 2, the gap between the rotating plate 11 and the filter box 2 can be filled to avoid gas leakage. When it is necessary to clean the inside of the filter box 2, pressing the pressing plate 8 can drive the lifting rod 9, the lifting plate 20 and the cleaning brush 21 to move downward, and the return spring 10 is compressed. After releasing the pressing plate 8, the return spring 10 pushes the pressing plate 8 to drive the pressing plate 8 to move upward, so as to drive the lifting rod 9, the lifting plate 20 and the cleaning brush 21 to move upward. Repeatedly pressing and then releasing the pressing plate 8 can drive the cleaning brush 21 to move up and down to clean the surface of the filter net 19. When the lifting rod 9 moves downward, it drives the T-shaped slider 23 to slide downward inside the T-shaped sliding groove, and the sliding of the T-shaped slider 23 drives the rotating plate 11 to rotate downward. The dust after cleaning is discharged outward along the gap between the bottom of the filter box 2 and the rotating plate 11 when the rotating plate 11 rotates downward, so as to improve the convenience of cleaning the filter net 19. Symmetrical baffles 22 are fixedly arranged on the left and right sides of the T-shaped slider 23. The bottom surface of the baffle 22 is slidably connected with the rotating plate 11. The baffle 22 can always cover the T-shaped sliding groove during the dust cleaning process, so as to prevent dust from falling into and accumulating inside the T-shaped sliding groove.

[0029] Specific working principle:

[0030] When the device is in use, high-temperature flue gas enters the interior of the filtration box 2 through the intake pipe 3. After being filtered by the filter net 19, the high-temperature flue gas sequentially enters the waste heat boiler housing 1 along the connecting pipe 4 and the first through groove, and then enters the outlet pipe 5 along the second through groove and is discharged outward. Water is injected into the interior of the waste heat boiler housing 1 through the water inlet pipe 7 and sequentially enters the outlet pipe 6 along the flow distribution plate 12, the flow distribution branch pipes 13, and the flow collection plate 14 and is discharged outward. The first diversion plate 15 and the second diversion plate 16 are arranged at intervals to guide the flow of the high-temperature flue gas, facilitating the high-temperature flue gas below the interior of the waste heat boiler housing 1 to pass through the notch 18 and enter above the first diversion plate 15 and the second diversion plate 16, enabling the high-temperature flue gas to fully contact the outer wall of the flow distribution branch pipe 13, thereby increasing the contact area between the high-temperature flue gas and the outer wall of the flow distribution branch pipe 13 and improving the heat exchange efficiency between the high-temperature flue gas and water. When the high-temperature flue gas contacts the flow distribution branch pipe 13 inside the waste heat boiler housing 1, heat can be transferred through the flow distribution branch pipe 13 to the water inside the flow distribution branch pipe 13, raising the temperature of the water, thus achieving heat transfer.

[0031] When the interior of the filtration box 2 needs to be cleaned of ash, pressing the pressing plate 8 can drive the lifting rod 9, the lifting plate 20, and the cleaning brush 21 to move downward. The return spring 10 is compressed. After releasing the pressing plate 8, the return spring 10 pushes the pressing plate 8 to drive the pressing plate 8 to move upward, thereby driving the lifting rod 9, the lifting plate 20, and the cleaning brush 21 to move upward. Repeatedly pressing and then releasing the pressing plate 8 can drive the cleaning brush 21 to move up and down to clean the surface of the filter net 19. When the lifting rod 9 moves downward, it drives the T-shaped slider 23 to slide downward inside the T-shaped chute. The sliding of the T-shaped slider 23 drives the rotating plate 11 to rotate downward. The ash after cleaning is discharged outward along the gap between the bottom of the filtration box 2 and the rotating plate 11 when the rotating plate 11 rotates downward, thereby improving the convenience of cleaning the filter net 19. The baffle 22 can always cover the T-shaped chute during ash cleaning, thereby preventing ash from falling into and accumulating inside the T-shaped chute.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat heat exchange device and a waste heat boiler, comprising a waste heat boiler housing (1), a filter box (2) and a filter screen (19), wherein the waste heat boiler housing (1) is provided with a filter box (2) outside, and a filter screen (19) is installed on the side of the filter box (2), characterized in that: A flow guide component, the flow guide component is arranged inside the waste heat boiler shell (1), and the flow guide component can improve the efficiency of heat exchange between high-temperature flue gas and water; A dust cleaning component, which is arranged inside and on the top of the filter box (2), and can conveniently clean the surface of the filter screen (19); A baffle (22), wherein the baffle (22) is arranged inside the filter box (2), and the baffle (22) can prevent dust from accumulating at the bottom of the filter box (2).

2. A waste heat heat exchange device and a waste heat boiler according to claim 1, characterized in that: The side of the filter box (2) away from the filter screen (19) is connected to an air inlet pipe (3), and the side of the filter box (2) close to the filter screen (19) is connected to a connecting pipe (4); one end of the connecting pipe (4) away from the filter box (2) is connected to the bottom of the waste heat boiler shell (1); the top of the waste heat boiler shell (1) is connected to an air outlet pipe (5); a diverter plate (12) and a collecting plate (14) are fixedly arranged on the inside of the waste heat boiler shell (1); a plurality of diverter branches (13) are connected between the diverter plate (12) and the collecting plate (14); and a water inlet pipe (7) and a water outlet pipe (6) are respectively connected to the outside of the diverter plate (12) and the collecting plate (14); the water inlet pipe (7) and the water outlet pipe (6) respectively penetrate the waste heat boiler shell (1) and are fixedly connected to the waste heat boiler shell (1).

3. A waste heat heat exchange device and a waste heat boiler according to claim 1, characterized in that: The flow guide assembly comprises a first flow guide plate (15), a second flow guide plate (16), a through hole (17) and a notch (18); a plurality of first flow guide plates (15) and a second flow guide plate (16) are arranged at intervals on the inner wall of the waste heat boiler shell (1); the inner wall of the waste heat boiler shell (1) is fixedly connected to the outer sides of the first flow guide plate (15) and the second flow guide plate (16), respectively; a plurality of through holes (17) adapted to flow branch pipes (13) are penetrated through the top surfaces of the first flow guide plate (15) and the second flow guide plate (16); the flow branch pipes (13) are slidably connected to the first flow guide plate (15) and the second flow guide plate (16) through the through holes (17); and the side surfaces of the first flow guide plate (15) and the second flow guide plate (16) are provided with notches (18).

4. A waste heat heat exchange device and a waste heat boiler according to claim 1, characterized in that: The dust cleaning component comprises a pressing plate (8), a lifting rod (9), a return spring (10), a rotating plate (11), a lifting plate (20), a cleaning brush (21) and a T-shaped slider (23); a pressing plate (8) is arranged above the filter box (2); a lifting rod (9) and a return spring (10) are fixedly arranged on the bottom surface of the pressing plate (8); a lifting plate (20) is fixedly arranged on the outside of the lifting rod (9); a cleaning brush (21) is fixedly installed on the side of the lifting plate (20) close to the filter screen (19); a T-shaped slider (23) is hingedly connected to the bottom surface of the lifting rod (9); and a rotating plate (11) is hingedly connected to the bottom surface of the filter box (2).

5. A waste heat heat exchange device and a waste heat boiler according to claim 4, characterized in that: The lifting rod (9) passes through the filter box (2) and is slidably connected to the filter box (2); one end of the return spring (10) away from the pressure plate (8) is fixedly connected to the top surface of the filter box (2); the top surface of the rotating plate (11) is provided with a T-shaped groove adapted to fit the T-shaped slider (23); and the T-shaped slider (23) is slidably connected to the rotating plate (11) via the T-shaped groove.

6. A waste heat heat exchange device and a waste heat boiler according to claim 5, characterized in that: Symmetrical baffles (22) are fixedly provided on the left and right sides of the T-shaped sliding block (23), and the baffles (22) are slidably connected to the rotating plate (11).

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