Boiler flue gas waste heat utilization device

Abstract

The utility model discloses a boiler flue gas waste heat utilization device which comprises a heat exchange box, a heat exchange pipe is arranged in the heat exchange box, one side of the heat exchange pipe is communicated with a smoke exhaust pipe, the other end of the heat exchange pipe is provided with a communicating pipe and a dust removal box, a spoiler is arranged in the heat exchange pipe, the heat exchange pipe is provided with radiating fins in the heat exchange box, and the spoiler is hinged to the smoke exhaust pipe. The liquid is arranged in the heat exchange box, when flue gas passes through the heat exchange pipe, heat is dissipated into the liquid through the cooling fins for heat recovery and application, the heat is dissipated into the liquid through the cooling fins, the heat is dissipated into the liquid through the cooling fins, and the heat is dissipated into the liquid through the cooling fins for heat recovery and application through the arrangement of the spoilers, so that the heat recovery efficiency is improved. The flow time of smoke in the heat exchange pipe is prolonged, the heat exchange effect is improved, the adjusting pipe is driven by the adjusting device to move, the adjusting head is driven by the adjusting pipe to make contact with the spoiler, the overturning angle of the spoiler is adjusted, the circulation radius of the smoke in the smoke exhaust pipe is changed, and the flow speed of the smoke in the smoke exhaust pipe is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas, and more specifically, to a boiler flue gas waste heat utilization device. Background Art

[0002] A boiler is a heat exchange device that uses fuel or other energy sources to generate heat energy and heat water to a certain temperature or pressure. During the heating process, the boiler will produce a large amount of flue gas, which has a relatively high temperature. Direct emission will cause a certain amount of heat loss. Boiler flue gas preheating refers to the recovery of heat from the flue gas emitted by the boiler to improve energy efficiency and reduce environmental pollution.

[0003] In the existing technology, the flue gas passes through the exhaust pipe quickly, and the heat cannot be more fully utilized and recovered, resulting in part of the heat being discharged and wasted. At the same time, the lack of a gas flow rate regulating device in the exhaust pipe will affect the performance and safety of the exhaust system. It cannot be adjusted according to the load changes of the boiler or combustion equipment, resulting in poor exhaust effect. At the same time, the flue gas contains smoke dust, and direct discharge is easy to pollute the air. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model provides a boiler flue gas waste heat utilization device to solve the technical problems mentioned in the background technology of poor heat exchange effect and inability to adjust the flue gas flow rate in the smoke exhaust pipe.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler flue gas waste heat utilization device, comprising a heat exchange box, a heat exchange tube is arranged in the heat exchange box, one side of the heat exchange tube is connected to a smoke exhaust pipe, and the other end is provided with a connecting pipe and a dust removal box, a baffle is arranged in the heat exchange tube, a heat sink is arranged in the heat exchange tube, a baffle is hingedly provided on the smoke exhaust pipe, a baffle spring is provided between the baffle and the smoke exhaust pipe, an adjusting tube is provided on the smoke exhaust pipe, an adjusting device and an adjusting head are provided on the adjusting tube, a filter plate is provided in the dust removal box, a moving device is provided on the dust removal box, a cleaning box and a cleaning rack are provided on the moving device, a cleaning brush is provided on the cleaning rack, a baffle is provided on the cleaning box which is rotated by a torsion spring, an inclined surface is provided on the cleaning box, and a block is provided on one side of the cleaning box.

[0006] The utility model is further configured that the adjusting device comprises an adjusting groove, the adjusting groove is arranged on the smoke exhaust pipe, and the adjusting pipe is provided with an adjusting block matched with the adjusting groove to facilitate the movement of the adjusting pipe.

[0007] The utility model is further configured that an adjusting sleeve is provided on the adjusting block, and the adjusting sleeve is threadedly connected to the smoke exhaust pipe to facilitate moving the position of the adjusting sleeve.

[0008] The utility model is further configured that the adjusting sleeve is provided with a rotation groove, and the adjusting block is provided with a rotation ring matched with the rotation groove, so as to facilitate the movement of the adjusting tube by the adjusting sleeve.

[0009] The utility model is further configured such that the moving device includes a moving motor, a moving screw is provided on the motor shaft of the moving motor, a moving block is provided on the moving screw, and the moving blocks are fixedly arranged on both sides of the cleaning box. The moving screw is driven to rotate by the moving motor, thereby driving the moving block and the cleaning box to move in the dust removal box.

[0010] The utility model is further configured that a movable slide bar is also provided on the dust removal box, and the movable slide bar is slidably connected with the movable block to limit the moving direction of the movable block.

[0011] The utility model is further configured that a cleaning port is provided on one side of the dust removal box to facilitate dust cleaning.

[0012] The utility model is further configured that a cleaning plate is slidably provided on one side of the dust removal box to prevent smoke from overflowing from the cleaning opening.

[0013] Compared with the prior art, the utility model provides a boiler flue gas waste heat utilization device, which has the following beneficial effects:

[0014] 1. By setting liquid in the heat exchange box, when the flue gas passes through the heat exchange tube, the heat is dissipated into the liquid through the heat sink for heat recovery application. By setting the baffle, the flow time of the flue gas in the heat exchange tube is extended, thereby improving the heat exchange effect.

[0015] 2. The adjusting device drives the adjusting tube to move, and the adjusting tube drives the adjusting head to contact the baffle, so as to adjust the flipping angle of the baffle, thereby changing the flow radius of the smoke in the exhaust pipe, and then adjusting the flow rate of the smoke in the exhaust pipe.

[0016] 3. The flue gas is filtered in the dust removal box through the filter plate, and the filtered smoke adheres to the filter plate. The cleaning rack and the cleaning brush are driven by the moving device to move and clean the filter plate, which reduces the manual maintenance frequency of the filter plate and improves the practicality of the dust removal box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a boiler flue gas waste heat utilization device in the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the smoke exhaust pipe in the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat exchange box and the heat exchange tube in the utility model;

[0020] Figure 4 This is a schematic diagram of the transverse cross-sectional structure of the dust removal box in the utility model;

[0021] Figure 5 It is a schematic diagram of the longitudinal section structure of the dust removal box in the utility model.

[0022] In the figure: 1. heat exchange box; 2. heat exchange tube; 3. exhaust pipe; 4. connecting pipe; 5. dust removal box; 6. baffle; 7. heat sink; 8. baffle; 9. baffle spring; 10. adjustment tube; 11. adjustment head; 12. filter plate; 13. cleaning box; 14. cleaning rack; 15. cleaning brush; 16. baffle; 17. block; 18. adjustment slot; 19. adjustment block; 20. adjustment sleeve; 21. rotating slot; 22. rotating ring; 23. moving motor; 24. moving screw; 25. moving block; 26. moving slide rod; 27. cleaning port; 28. cleaning plate. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0026] See also Figure 1-5A boiler flue gas waste heat utilization device comprises a heat exchange box 1, a heat exchange tube 2 is arranged in the heat exchange box 1, a smoke exhaust pipe 3 is connected to one side of the heat exchange tube 2, a connecting pipe 4 and a dust removal box 5 are arranged at the other end, a baffle 6 is arranged in the heat exchange tube 2, a heat sink 7 is arranged in the heat exchange box 1, a baffle 8 is hingedly arranged on the smoke exhaust pipe 3, a baffle spring 9 is arranged between the baffle 8 and the smoke exhaust pipe 3, an adjusting pipe 10 is arranged on the smoke exhaust pipe 3, an adjusting device and an adjusting head 11 are arranged on the adjusting pipe 10, a filter plate 12 is arranged in the dust removal box 5, a moving device is arranged on the dust removal box 5, and a cleaning box 13 and a moving device are arranged on the moving device A cleaning rack 14 is provided with a cleaning brush 15, a baffle 16 is provided on the cleaning box 13 which is rotated by a torsion spring, an inclined surface is provided on the cleaning box 13, a baffle 17 is provided on one side of the cleaning box 13, a moving device includes a moving motor 23, a moving screw 24 is provided on the motor shaft of the moving motor 23, a moving block 25 is provided on the moving screw 24, the moving block 25 is fixedly arranged on both sides of the cleaning box 13, a moving slide bar 26 is also provided on the dust removal box 5, the moving slide bar 26 is slidably connected to the moving block 25, a cleaning port 27 is provided on one side of the dust removal box 5, and a cleaning plate 28 is slidably provided on one side of the dust removal box 5.

[0027] In this embodiment, when heat exchange is performed, the flue gas is passed into the heat exchange tube 2 through the exhaust pipe 3, and a heat exchange liquid medium, such as water, is passed into the heat exchange box 1. The heat of the flue gas is dissipated into the liquid through the heat sink 7 for heat recovery application. By setting the baffle 6, the flow time of the flue gas in the heat exchange tube 2 is prolonged, thereby improving the heat exchange effect. The flue gas after heat exchange enters the connecting pipe 4, is filtered by the filter plate 12, and is discharged through the air outlet end of the dust removal box 5. The smoke in the flue gas will adhere to the filter plate 12, and then the moving motor 23 is started, the moving motor 23 drives the moving screw 24 to rotate, the moving screw 24 drives the moving block 25 to move along the moving slide rod 26, and the moving block 25 drives the cleaning rack 14 and the cleaning box 13 to move. The cleaning frame 14 drives the cleaning brush 15 to clean the bottom of the filter plate 12. At this time, one end of the baffle 16 contacts the inclined surface of the cleaning box 13, blocking the unloading end of the cleaning box 13. The cleaned dust falls between the baffle 16 and the cleaning box 13. When the cleaning box 13 moves to one end of the dust removal box 5, the block 17 squeezes the baffle 16, and the baffle 16 drives the torsion spring to rotate, the baffle 16 flips over, the unloading end of the cleaning box 13 is opened, and the dust in the cleaning box 13 slides along the inclined surface to the cleaning port 27 of the dust removal box 5, and then the cleaning plate 28 is opened to take out the cleaned dust. When the moving device moves in the reverse direction, the baffle 16 is reset under the action of the torsion spring, and the bottom of the baffle 16 continues to contact the inclined surface of the cleaning box 13 to prevent dust from falling.

[0028] See also Figure 2As an implementation method of the adjustment device: the adjustment device includes an adjustment groove 18, the adjustment groove 18 is arranged on the smoke exhaust pipe 3, the adjustment pipe 10 is provided with an adjustment block 19 that cooperates with the adjustment groove 18, the adjustment block 19 is provided with an adjustment sleeve 20, the adjustment sleeve 20 is threadedly connected to the smoke exhaust pipe 3, the adjustment sleeve 20 is provided with a rotating groove 21, and the adjustment block 19 is provided with a rotating ring 22 that cooperates with the rotating groove 21.

[0029] More specifically, when adjusting the flow rate of the smoke exhaust pipe 3, the adjusting sleeve 20 is rotated and moved on the smoke exhaust pipe 3. The movement of the adjusting sleeve 20 drives the adjusting block 19 to move in the adjusting groove 18 through the cooperation of the rotating ring 22 and the rotating groove 21, thereby driving the movement of the adjusting pipe 10 and the adjusting head 11. Through the contact between the adjusting head 11 and the baffle 8, the extension angle of the baffle 8 is adjusted, thereby adjusting the flow area of ​​the gas in the smoke exhaust pipe 3, and then adjusting the flow rate of the smoke in the smoke exhaust pipe 3.

[0030] In summary, when the overall equipment is in use or running: when heat exchange is performed, the flue gas is passed into the heat exchange tube 2 through the exhaust pipe 3, and a heat exchange liquid medium, such as water, is passed into the heat exchange box 1. The heat of the flue gas is dissipated into the liquid through the heat sink 7 for heat recovery application. By setting the baffle 6, the flow time of the flue gas in the heat exchange tube 2 is prolonged, thereby improving the heat exchange effect. The flue gas after heat exchange enters the connecting pipe 4, is filtered by the filter plate 12, and is discharged through the air outlet of the dust removal box 5. The smoke in the flue gas will adhere to the filter plate 12, and then the moving motor 23 is started, the moving motor 23 drives the moving screw 24 to rotate, the moving screw 24 drives the moving block 25 to move along the moving slide rod 26, and the moving block 25 drives the cleaning rack 14 and the cleaning box 1 3 is moved, and the cleaning frame 14 drives the cleaning brush 15 to clean the bottom of the filter plate 12. At this time, one end of the baffle 16 contacts the inclined surface of the cleaning box 13, blocking the unloading end of the cleaning box 13, and the cleaned dust falls between the baffle 16 and the cleaning box 13. When the cleaning box 13 moves to one end of the dust removal box 5, the block 17 squeezes the baffle 16, and the baffle 16 drives the torsion spring to rotate, the baffle 16 flips, the unloading end of the cleaning box 13 is opened, and the dust in the cleaning box 13 slides along the inclined surface to the cleaning port 27 of the dust removal box 5, and then the cleaning plate 28 is opened to take out the cleaned dust. When the moving device moves in the reverse direction, the baffle 16 is reset under the action of the torsion spring, and the bottom of the baffle 16 continues to contact the inclined surface of the cleaning box 13 to prevent dust from falling.

[0031] When adjusting the flow rate of the smoke exhaust pipe 3, the adjusting sleeve 20 is rotated and moved on the smoke exhaust pipe 3. The adjusting sleeve 20 moves through the cooperation of the rotating ring 22 and the rotating groove 21, driving the adjusting block 19 to move in the adjusting groove 18, and then driving the movement of the adjusting pipe 10 and the adjusting head 11. Through the contact between the adjusting head 11 and the baffle 8, the extension angle of the baffle 8 is adjusted, and then the flow area of ​​the gas in the smoke exhaust pipe 3 is adjusted, and then the flow rate of the smoke in the smoke exhaust pipe 3 is adjusted.

[0032] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A boiler flue gas waste heat utilization device, comprising a heat exchange box (1), characterized in that: The heat exchange box (1) is provided with a heat exchange tube (2), one side of the heat exchange tube (2) is connected to a smoke exhaust pipe (3), and the other end is provided with a connecting pipe (4) and a dust removal box (5), a baffle (6) is provided in the heat exchange tube (2), a heat sink (7) is provided in the heat exchange box (1), a baffle (8) is hingedly provided on the smoke exhaust pipe (3), a baffle spring (9) is provided between the baffle (8) and the smoke exhaust pipe (3), and a regulating pipe (10) is provided on the smoke exhaust pipe (3). The regulating tube (10) is provided with a regulating device and a regulating head (11); a filter plate (12) is provided in the dust removal box (5); a moving device is provided on the dust removal box (5); a cleaning box (13) and a cleaning frame (14) are provided on the moving device; a cleaning brush (15) is provided on the cleaning frame (14); a baffle (16) is provided on the cleaning box (13) for rotation via a torsion spring; an inclined surface is provided on the cleaning box (13); and a stopper (17) is provided on one side of the cleaning box (13).

2. The boiler flue gas waste heat utilization device according to claim 1 is characterized in that: The regulating device comprises an regulating groove (18), wherein the regulating groove (18) is arranged on the smoke exhaust pipe (3), and the regulating pipe (10) is provided with an regulating block (19) that cooperates with the regulating groove (18).

3. The boiler flue gas waste heat utilization device according to claim 2 is characterized in that: An adjusting sleeve (20) is provided on the adjusting block (19), and the adjusting sleeve (20) is threadedly connected to the smoke exhaust pipe (3).

4. The boiler flue gas waste heat utilization device according to claim 3 is characterized in that: The adjusting sleeve (20) is provided with a rotation groove (21), and the adjusting block (19) is provided with a rotation ring (22) that matches the rotation groove (21).

5. The boiler flue gas waste heat utilization device according to claim 1 is characterized in that: The moving device comprises a moving motor (23), a moving screw (24) is provided on the motor shaft of the moving motor (23), a moving block (25) is provided on the moving screw (24), and the moving blocks (25) are fixedly arranged on both sides of the cleaning box (13).

6. A boiler flue gas waste heat utilization device according to claim 5, characterized in that: The dust removal box (5) is also provided with a movable slide bar (26), and the movable slide bar (26) is slidably connected to the movable block (25).

7. The boiler flue gas waste heat utilization device according to claim 1 is characterized in that: A cleaning port (27) is provided on one side of the dust removal box (5).

8. The boiler flue gas waste heat utilization device according to claim 1 is characterized in that: A cleaning plate (28) is slidably provided on one side of the dust removal box (5).

Images