Boiler waste heat gradient utilization device

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a boiler waste heat gradient utilization device which comprises a heat exchange frame and a cleaning assembly, an outer box A is fixed to the bottom end in the heat exchange frame through screws, and a fixing pipe A enabling high-temperature sewage generated by a boiler to enter the outer box A is connected to the bottom of the outer box A in an inserted mode. The end, away from the outer box A, of the fixing pipe A extends out of the heat exchange frame, a heat conduction box is fixed to one side of the outer box A through screws, and an outer box B is fixed to the end, away from the outer box A, of the heat conduction box through screws; when a heat conduction plate transmits heat of high-temperature sewage in a heat conduction box outwards, a motor at the bottom of a heat exchange frame drives a driving rod to rotate through a speed reducer under the action of a PLC, the driving rod sequentially penetrates through an outer box A, an inner box A, the heat conduction box, an outer box B and an inner box B, and the driving rod drives an external driving block to rotate, so that a brush block in the driving block makes contact with the surface of the heat conduction plate; therefore, foreign matters adhered to the heat conducting plate can be conveniently cleaned, and the heat conducting efficiency of the heat conducting plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to a boiler waste heat cascade utilization device. Background Technology

[0002] A boiler is a device that converts the heat energy from the combustion of fuel or other forms into steam, hot water or an organic heat carrier. It releases heat energy by burning fuel and transfers this heat energy to water or other working fluids to bring them to the required temperature or pressure.

[0003] Patent No. 202421198953.9 discloses a boiler waste heat cascade utilization heat recovery device. This device heats the domestic water inside the heat exchange chamber by passing high-temperature wastewater generated by the boiler into a first water storage tank and a second water storage tank, thus achieving primary heat recovery. Then, the airflow entering the heat exchange box is heated by a heat-conducting plate, and the heated airflow is used for daily life, thus achieving secondary heat recovery.

[0004] However, existing boiler waste heat cascade utilization devices use heat-conducting plates to transfer the heat from the high-temperature wastewater generated by the boiler. However, some impurities remain in the wastewater. When the impurities pass through the heat-conducting plates, they adhere to the surface of the heat-conducting plates, which reduces the heat transfer efficiency of the heat-conducting plates and makes it impossible to fully utilize the heat in the high-temperature wastewater. Therefore, a boiler waste heat cascade utilization device is set up. Utility Model Content

[0005] (1) In view of the problems in the background technology, this utility model provides a boiler waste heat cascade utilization device.

[0006] (2) The technical solution adopted by this utility model to solve its technical problem is a boiler waste heat cascade utilization device, including a heat exchange rack cleaning assembly. The bottom of the heat exchange rack is screwed to an outer box A, and a fixed pipe A is inserted into the bottom of the outer box A to allow the high-temperature sewage generated by the boiler to enter the outer box A. The end of the fixed pipe A away from the outer box A extends to the outside of the heat exchange rack. A heat conduction box is screwed to one side of the outer box A, and an outer box B is screwed to the end of the heat conduction box away from the outer box A. A heat conduction plate for heat transfer of high-temperature sewage is symmetrically screwed to the outside of the heat conduction box, and one end of the heat conduction plate extends into the inside of the heat conduction box. An inner box A is welded inside the outer box A, and a conveying pipe is symmetrically screwed to the outside of the inner box A. An inner box B is screwed to the end of the conveying pipe away from the inner box A, and the inner box B is welded inside the outer box B. A fixing pipe B is inserted into the bottom of the inner box A, and a pump body is screwed to one end of the fixing pipe B. A connecting pipe for conveying domestic water is screwed to the end of the pump body away from the fixing pipe B. A branch pipe B for conveying heated domestic sewage is inserted into the top of the inner box B. A pipe A is screwed to one side of the heat exchange rack, and a pipe B is screwed to the end of the heat exchange rack away from the pipe A. A fan is screwed to the end of the pipe B away from the heat exchange rack.

[0007] (3) By adopting the above technical solution, the high-temperature sewage generated by the boiler enters the outer box A inside the heat exchange rack through the fixed pipe A. At the same time, the pump body, under the action of the PLC controller, transports domestic water to the inner box A on one side of the fixed pipe B through the connecting pipe. This allows the water in the inner box A to absorb the heat of the high-temperature sewage in the outer box A. Subsequently, the high-temperature sewage in the outer box A is transferred to the outer box B through the heat conduction box. The heat conduction plate inserted on the heat conduction box transfers the heat in the high-temperature sewage in the heat conduction box to the outside. At the same time, the fan on the pipe B causes the outside air to enter the heat exchange rack through the pipe A. The outside air generates hot air through the surface of the heat conduction plate in the heat exchange rack. This hot air is then transported to the room through the pipe B to achieve the purpose of heating. The domestic water in the inner box A is transported to the inner box B through the conveying pipe. The inner box B absorbs the heat of the sewage in the outer box B, causing the domestic water in the inner box B to be reheated. Subsequently, the domestic sewage in the inner box B is discharged through the branch pipe B for daily household use, thereby achieving the cascade utilization treatment of the high-temperature sewage generated by the boiler.

[0008] (4) Specifically, the cleaning assembly includes a motor, a reducer, a support plate, a drive rod, a drive block, a brush block and a brush plate. The bottom of the heat exchange rack is bolted to a motor, and the power output end flange of the motor is connected to a reducer. The reducer is keyed to a drive rod, and the drive rod is screwed to a drive block. The drive block is screwed to a brush block that contacts the heat-conducting plate.

[0009] (5) By adopting the above technical solution, when the heat-conducting plate transfers the heat of the high-temperature sewage in the heat-conducting box to the outside, the motor at the bottom of the heat exchange frame is driven by the PLC controller to drive the drive rod to rotate through the reducer. The drive rod passes through the outer box A, inner box A, heat-conducting box, outer box B and inner box B in sequence. The drive rod is installed in the bearing seat of the heat exchange frame through a deep groove ball bearing. The bearing seat is welded to the inner wall of the heat exchange frame. The connection between the drive rod and the outer box A, inner box A, outer box B and inner box B is all interference-fitted with bearings and is treated with shaft seal. The drive rod drives the external drive block to rotate, so that the brush block in the drive block contacts the surface of the heat-conducting plate, thereby facilitating the cleaning of foreign matter adhering to the heat-conducting plate and improving the heat conduction efficiency of the heat-conducting plate.

[0010] (6) Specifically, the drive rod is symmetrically welded with a support plate on the outside, and a brush plate that contacts the surface of the inner box A is fixed with screws on the inside of the support plate.

[0011] (7) By adopting the above technical solution, when the drive rod rotates, the support plates symmetrically installed on the outside of the drive rod rotate with the drive rod. Then, the brush plate installed on the inside of the drive rod brushes the surface of the inner box A. At the same time, the outside of the drive rod that contacts the inner box B is also provided with a support plate and a brush plate, which makes it easier to clean foreign objects on the inner box A and the inner box B.

[0012] (8) Specifically, the top of the outer casing B is connected to a branch pipe A for discharging wastewater generated by the boiler, and the end of the branch pipe A away from the outer casing B extends to the outside of the heat exchange rack.

[0013] (9) By adopting the above technical solution, the high-temperature sewage generated by the boiler passes through outer box A and outer box B and is discharged from the branch pipe A that is screwed into the top of outer box B.

[0014] (10) Specifically, the input ends of the motor, reducer, fan and pump body are all electrically connected to the power supply end of the external power source.

[0015] (11) By adopting the above technical solution and connecting to an external power source, the electrical equipment can operate normally.

[0016] (12) The beneficial effects of this utility model:

[0017] (13) In the boiler waste heat cascade utilization device described in this utility model, when the heat conduction plate transfers the heat of the high temperature sewage in the heat conduction box to the outside, the motor at the bottom of the heat exchange frame is driven by the PLC controller to drive the drive rod to rotate through the reducer. The drive rod passes through the outer box A, inner box A, heat conduction box, outer box B and inner box B in sequence. The drive rod drives the external drive block to rotate, so that the brush block in the drive block contacts the surface of the heat conduction plate, thereby facilitating the cleaning of foreign matter adhering to the heat conduction plate and improving the heat conduction efficiency of the heat conduction plate.

[0018] (2) In the boiler waste heat cascade utilization device described in this utility model, when the drive rod rotates, the support plates symmetrically installed on the outside of the drive rod rotate with the drive rod. Then, the brush plate installed on the inside of the drive rod brushes the surface of the inner box A. At the same time, the outside of the drive rod that contacts the inner box B is also provided with a support plate and a brush plate, so as to facilitate the cleaning of foreign objects on the inner box A and the inner box B. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of a boiler waste heat cascade utilization device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a boiler waste heat cascade utilization device according to the present invention;

[0022] Figure 3 This is a schematic diagram of the inner structure of the support plate of a boiler waste heat cascade utilization device according to the present invention;

[0023] In the diagram: 1. Branch pipe A; 2. Pipe A; 3. Branch pipe B; 4. Pipe B; 5. Fan; 6. Heat exchange rack; 7. Fixed pipe A; 8. Outer casing A; 9. Inner casing A; 10. Brush block; 11. Heat-conducting plate; 12. Delivery pipe; 13. Inner casing B; 14. Outer casing B; 15. Drive block; 16. Heat-conducting box; 17. Drive rod; 18. Connecting pipe; 19. Fixed pipe B; 20. Pump body; 21. Support plate; 22. Motor; 23. Brush plate; 24. Reducer; 25. Cleaning assembly. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In order to utilize and treat high-temperature wastewater generated by boilers in a tiered manner, as one embodiment of this utility model, such as... Figure 1 , Figure 2 and Figure 3As shown, the boiler waste heat utilization device of this utility model includes a heat exchange frame 6 and a cleaning assembly 25. An outer casing A8 is screwed to the bottom of the heat exchange frame 6, and a fixing pipe A7 is inserted into the bottom of the outer casing A8 to allow high-temperature wastewater generated by the boiler to enter the outer casing A8. The end of the fixing pipe A7 away from the outer casing A8 extends to the outside of the heat exchange frame 6. A heat-conducting box 16 is screwed to one side of the outer casing A8, and an outer casing B14 is screwed to the end of the heat-conducting box 16 away from the outer casing A8. A heat-conducting plate 11 for transferring heat from the high-temperature wastewater is symmetrically screwed to the outside of the heat-conducting box 16, and one end of the heat-conducting plate 11 extends into the interior of the heat-conducting box 16. An inner casing A9 is welded inside the outer casing A8. The inner box A9 is symmetrically screwed with a conveying pipe 12. The end of the conveying pipe 12 away from the inner box A9 is screwed with an inner box B13, and the inner box B13 is welded to the inside of the outer box B14. The bottom of the inner box A9 is inserted with a fixing pipe B19, and the end of the fixing pipe B19 is screwed with a pump body 20. The end of the pump body 20 away from the fixing pipe B19 is screwed with a connecting pipe 18 for conveying domestic water. The top of the inner box B13 is inserted with a branch pipe B3 for conveying heated domestic sewage. The heat exchange frame 6 is screwed with a pipe A2 on one side. The end of the heat exchange frame 6 away from the pipe A2 is screwed with a pipe B4, and the end of the pipe B4 away from the heat exchange frame 6 is screwed with a fan 5.

[0026] During operation, the high-temperature wastewater generated by the boiler enters the outer casing A8 inside the heat exchange rack 6 through the fixed pipe A7. Simultaneously, the pump body 20, controlled by the PLC controller, transports domestic water to the inner casing A9 on one side of the fixed pipe B19 via the connecting pipe 18. This allows the water in the inner casing A9 to absorb the heat from the high-temperature wastewater in the outer casing A8. Subsequently, the high-temperature wastewater in the outer casing A8 is transferred to the outer casing B14 through the heat transfer box 16. The heat transfer plate 11 inserted into the heat transfer box 16 transfers the heat from the high-temperature wastewater in the heat transfer box 16 outwards. At the same time, the fan 5 on pipe B4... Outside air enters the heat exchange rack 6 through pipe A2. The outside air passes through the heat conduction plate 11 inside the heat exchange rack 6 and generates hot air, which is then transported to the room through pipe B4 to achieve the purpose of heating. Domestic water in inner box A9 is transported to inner box B13 through conveying pipe 12. Inner box B13 absorbs the heat of sewage in outer box B14, thereby reheating the domestic water in inner box B13. Subsequently, the domestic sewage in inner box B13 is discharged through branch pipe B3 for daily household use, thus achieving the cascade utilization treatment of high-temperature sewage generated by the boiler.

[0027] To clean foreign matter adhering to the heat-conducting plate 11, for example, such as Figure 2 and Figure 3As shown, this utility model also includes the cleaning assembly 25, which includes a motor 22, a reducer 24, a support plate 21, a drive rod 17, a drive block 15, a brush block 10, and a brush plate 23. The bottom of the heat exchange frame 6 is bolted to the motor 22, and the power output end flange of the motor 22 is connected to the reducer 24. The reducer 24 is keyed to the drive rod 17, and the drive rod 17 is screwed to the outside of the drive block 17. The drive block 10, which contacts the heat conduction plate 11, is screwed to the inside of the drive block 15.

[0028] During use, when the heat-conducting plate 11 transfers heat from the high-temperature wastewater inside the heat-conducting box 16 to the outside, the motor 22 at the bottom of the heat exchange frame 6, under the action of the PLC controller, drives the drive rod 17 to rotate through the reducer 24. The drive rod 17 passes through the outer box A8, inner box A9, heat-conducting box 16, outer box B14, and inner box B13 in sequence. The drive rod 17 is installed in the bearing seat of the heat exchange frame 6 through a deep groove ball bearing. The bearing seat is welded to the inner wall of the heat exchange frame 6. The connection between the drive rod 17 and the outer box A8, inner box A9, outer box B14, and inner box B13 is all interference-fitted with bearings and has been treated with shaft seals. The drive rod 17 drives the external drive block 15 to rotate, so that the brush block 10 inside the drive block 15 contacts the surface of the heat-conducting plate 11, thereby facilitating the cleaning of foreign matter adhering to the heat-conducting plate 11 and improving the heat conduction efficiency of the heat-conducting plate 11.

[0029] To remove foreign objects from inner boxes A9 and B13, for example, as follows: Figure 2 and Figure 3 As shown, the present invention also includes a support plate 21 symmetrically welded to the outer side of the drive rod 17, and a brush plate 23 that contacts the surface of the inner box A9 is fixed to the inner side of the support plate 21 with screws.

[0030] When in use, when the drive rod 17 rotates, the support plates 21 symmetrically installed on the outside of the drive rod 17 rotate with the drive rod 17. Then, the brush plate 23 installed on the inside of the drive rod 17 brushes the surface of the inner box A9. At the same time, the support plate 21 and brush plate 23 are also provided on the outside of the drive rod 17 that contacts the inner box B13, so as to facilitate the cleaning of foreign objects on the inner box A9 and the inner box B13.

[0031] To discharge boiler wastewater after waste heat recovery, for example, such as Figure 1 As shown, the present invention also includes a branch pipe A1 inserted into the top of the outer casing B14 to discharge the wastewater generated by the boiler, and the end of the branch pipe A1 away from the outer casing B14 extends to the outside of the heat exchange rack 6.

[0032] During use, the high-temperature wastewater generated by the boiler passes through outer casing A8 and outer casing B14, and is discharged from branch pipe A1, which is screwed into the top of outer casing B14.

[0033] For electrical equipment to function properly, for example, such as Figure 1, Figure 2 As shown, the present invention also includes that the input terminals of the motor 22, the reducer 24, the fan 5 and the pump body 20 are all electrically connected to the power supply terminal of an external power source.

[0034] When in use, the electrical equipment works normally by connecting to an external power source.

[0035] In use, the high-temperature wastewater generated by the boiler enters the outer casing A8 inside the heat exchange rack 6 through the fixed pipe A7. Simultaneously, the pump body 20, controlled by the PLC controller, transports domestic water to the inner casing A9 on one side of the fixed pipe B19 via the connecting pipe 18. This allows the water in the inner casing A9 to absorb the heat from the high-temperature wastewater in the outer casing A8. Subsequently, the high-temperature wastewater in the outer casing A8 is transferred to the outer casing B14 through the heat transfer box 16. The heat transfer plate 11 inserted into the heat transfer box 16 transfers the heat from the high-temperature wastewater in the heat transfer box 16 outwards. Meanwhile, the fan 5 on pipe B4... Outside air enters the heat exchange rack 6 through pipe A2. The outside air passes through the heat conduction plate 11 inside the heat exchange rack 6 and generates hot air. The hot air is then transported to the room through pipe B4 to achieve the purpose of heating. The domestic water in the inner box A9 is transported to the inner box B13 through the delivery pipe 12. The inner box B13 absorbs the heat of the sewage in the outer box B14, so that the domestic water in the inner box B13 is reheated. Then the domestic sewage in the inner box B13 is discharged through the branch pipe B3 for daily household use, thereby achieving the cascade utilization treatment of the high-temperature sewage generated by the boiler.

[0036] When the heat-conducting plate 11 transfers the heat of the high-temperature sewage in the heat-conducting box 16 to the outside, the motor 22 at the bottom of the heat exchange frame 6, under the action of the PLC controller, drives the drive rod 17 to rotate through the reducer 24. The drive rod 17 passes through the outer box A8, inner box A9, heat-conducting box 16, outer box B14 and inner box B13 in sequence. The drive rod 17 is installed in the bearing seat of the heat exchange frame 6 through a deep groove ball bearing. The bearing seat is welded to the inner wall of the heat exchange frame 6. The connection between the drive rod 17 and the outer box A8, inner box A9, outer box B14 and inner box B13 is all interference-fitted with bearings and has been treated with shaft seal. The drive rod 17 drives the external drive block 15 to rotate, so that the brush block 10 in the drive block 15 contacts the surface of the heat-conducting plate 11, thereby facilitating the cleaning of foreign matter adhering to the heat-conducting plate 11 and improving the heat conduction efficiency of the heat-conducting plate 11.

[0037] When the drive rod 17 rotates, the support plate 21 symmetrically installed on the outside of the drive rod 17 rotates with the drive rod 17. Then, the brush plate 23 installed on the inside of the drive rod 17 brushes the surface of the inner box A9. At the same time, the support plate 21 and brush plate 23 are also provided on the outside of the drive rod 17 that contacts the inner box B13, so as to facilitate the cleaning of foreign objects on the inner box A9 and the inner box B13.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A boiler waste heat cascade utilization device, characterized in that, The assembly includes a heat exchange rack (6) and a cleaning assembly (25). The heat exchange rack (6) has an outer casing A (8) screwed to its bottom. A fixed pipe A (7) is inserted into the bottom of the outer casing A (8) to allow high-temperature wastewater from the boiler to enter the outer casing A (8). One end of the fixed pipe A (7) extends away from the outer casing A (8) to the outside of the heat exchange rack (6). A heat-conducting box (16) is screwed to one side of the outer casing A (8), and an outer casing B (14) is screwed to the other end of the heat-conducting box (16) away from the outer casing A (8). A heat-conducting plate (11) for transferring heat from the high-temperature wastewater is symmetrically screwed to the outside of the heat-conducting box (16), and one end of the heat-conducting plate (11) extends into the inside of the heat-conducting box (16). An inner casing A (9) is welded inside the outer casing A (8), and the inner casing A (9) is symmetrically screwed to the outside. A conveying pipe (12) is fixed, and an inner box B (13) is screwed to one end of the conveying pipe (12) away from the inner box A (9). The inner box B (13) is welded to the inside of the outer box B (14). A fixing pipe B (19) is inserted into the bottom of the inner box A (9), and a pump body (20) is screwed to one end of the fixing pipe B (19). A connecting pipe (18) for conveying domestic water is screwed to one end of the pump body (20) away from the fixing pipe B (19). A branch pipe B (3) for conveying heated domestic sewage is inserted into the top of the inner box B (13). A pipe A (2) is screwed to one side of the heat exchange rack (6). A pipe B (4) is screwed to one end of the heat exchange rack (6) away from the pipe A (2), and a fan (5) is screwed to one end of the pipe B (4) away from the heat exchange rack (6).

2. The boiler waste heat cascade utilization device according to claim 1, characterized in that, The cleaning assembly (25) includes a motor (22), a reducer (24), a support plate (21), a drive rod (17), a drive block (15), a brush block (10), and a brush plate (23). The bottom of the heat exchange rack (6) is bolted to the motor (22), and the power output end flange of the motor (22) is connected to the reducer (24). The reducer (24) is keyed to one side of the drive rod (17), and the drive block (15) is fixed to the outside of the drive rod (17) with screws. The brush block (10) that contacts the heat-conducting plate (11) is fixed to the inside of the drive block (15) with screws.

3. The boiler waste heat cascade utilization device according to claim 2, characterized in that, The drive rod (17) is symmetrically welded with a support plate (21) on the outside, and a brush plate (23) that contacts the surface of the inner box A (9) is fixed to the inside of the support plate (21) with screws.

4. A boiler waste heat cascade utilization device according to claim 1, characterized in that, The top of the outer casing B (14) is connected to a branch pipe A (1) for discharging wastewater generated by the boiler, and one end of the branch pipe A (1) away from the outer casing B (14) extends to the outside of the heat exchange rack (6).

5. A boiler waste heat cascade utilization device according to claim 2, characterized in that, The input terminals of the motor (22), reducer (24), fan (5) and pump body (20) are all electrically connected to the power supply terminal of an external power source.

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