Coal-fired boiler sewage recovery device
By using sewage discharge pipes in the coal-fired boiler sewage recovery device to exchange heat between sewage and waste heat, and pumping back the hot water and flushing the sewage discharge pipes, the heat loss and environmental pollution caused by boiler water discharge are solved, and the effective utilization of heat and safe sewage treatment are achieved.
Patent Information
- Application Number
- CN202421395672.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-18
AI Technical Summary
When boiler water is continuously discharged, the boiler heat loss will cause boiler heat loss, and direct discharge of high-temperature wastewater will pollute the environment.
A coal-fired boiler sewage recovery device is designed, and the sewage and waste heat exchange is performed through the sewage discharge pipe between the boiler body and the waste heat recovery box. The hot water is returned to the boiler body by using the first water pump, and the clean water is used to flush the sewage discharge pipe to prevent scaling and corrosion.
Effectively utilize the thermal energy of sewage, reduces the heat loss of boiler, and prevents scale and corrosion by flushing the sewage pipes, reduces safety hazards and reduces environmental pollution.
Smart Images
Figure CN222684335U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of boiler wastewater recovery and relates to a coal-fired boiler wastewater recovery device. Background Art
[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. During the operation of the boiler, in order to prevent the salt content and alkalinity concentration of the boiler water from being too high, resulting in safety hazards such as scaling and corrosion, the boiler water must be continuously discharged. However, the sewage contains a large amount of high temperature, which will cause heat loss in the boiler, and the direct discharge of high-temperature wastewater will pollute the environment. Summary of the invention
[0003] The utility model aims to solve the above problems in the existing technology and proposes a coal-fired boiler wastewater recovery device to solve the problem of boiler heat loss caused by continuous boiler water discharge and direct discharge of high-temperature wastewater polluting the environment.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] A coal-fired boiler wastewater recovery device, characterized in that it includes a frame, to which a boiler body and a waste heat recovery box are fixedly connected, the boiler body is provided with a first water inlet, the waste heat recovery box is provided with a second water inlet, a first drain pipe is provided between the boiler body and the waste heat recovery box, a valve is provided on the first drain pipe, a second drain pipe connected to the first drain pipe is provided in the waste heat recovery box, a first delivery pipe is also provided between the boiler body and the waste heat recovery box, a second delivery pipe is provided between the waste heat recovery box and the first drain pipe, a first water pump is provided on the first delivery pipe, and a second water pump is provided on the second delivery pipe.
[0006] In the above-mentioned coal-fired boiler wastewater recovery device, a filter box is fixedly connected to the frame, a third sewage pipe connected to the second sewage pipe is provided on the filter box, a filter screen is provided in the filter box, and a fourth sewage pipe is provided at the lower end of the filter box.
[0007] In the above-mentioned coal-fired boiler wastewater recovery device, the second sewage pipe is an "S"-shaped structure.
[0008] In the above-mentioned coal-fired boiler wastewater recovery device, a driving motor is provided on the waste heat recovery box, and a stirring blade is provided on the output shaft of the driving motor.
[0009] In the above-mentioned coal-fired boiler wastewater recovery device, a temperature sensor is provided on the waste heat recovery box.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] After the sewage generated by the boiler enters the second sewage pipe, it exchanges heat with the water in the waste heat recovery tank, so that the heat of the sewage in the second sewage pipe can be utilized. When the water in the waste heat recovery tank reaches a certain temperature, the first water pump draws the water in the waste heat recovery tank through the first delivery pipe to the boiler body for use. The water has a certain temperature after heat exchange, so that it can reach the required temperature in the boiler body faster, and the thermal energy of the sewage is fully utilized. After the boiler discharges sewage, the second water pump draws part of the water in the waste heat recovery tank through the second delivery pipe to the first sewage pipe. This part of clean water passes through the first sewage pipe and the second sewage pipe to flush the inside, so as to prevent sewage from remaining in the first sewage pipe and the second sewage pipe, resulting in safety hazards such as scaling and corrosion inside. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] In the figure,
[0014] 2. Frame; 3. Boiler body; 4. Waste heat recovery box; 5. First water inlet; 6. Second water inlet; 7. First sewage pipe; 8. Valve; 9. Second sewage pipe; 10. First delivery pipe; 11. Second delivery pipe; 12. First water pump; 13. Second water pump; 14. Filter box; 15. Third sewage pipe; 16. Filter screen; 17. Fourth sewage pipe; 18. Drive motor; 19. Stirring blade; 20. Temperature sensor. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] like Figure 1 As shown,
[0017] A coal-fired boiler wastewater recovery device, characterized in that it includes a frame 2, to which a boiler body 3 and a waste heat recovery tank 4 are fixedly connected, the boiler body 3 is provided with a first water inlet 5, the waste heat recovery tank 4 is provided with a second water inlet 6, a first drain pipe 7 is provided between the boiler body 3 and the waste heat recovery tank 4, a valve 8 is provided on the first drain pipe 7, a second drain pipe 9 connected to the first drain pipe 7 is provided in the waste heat recovery tank 4, a first delivery pipe 10 is also provided between the boiler body 3 and the waste heat recovery tank 4, a second delivery pipe 11 is provided between the waste heat recovery tank 4 and the first drain pipe 7, a first water pump 12 is provided on the first delivery pipe 10, and a second water pump 13 is provided on the second delivery pipe 11.
[0018] In this embodiment, after water is added to the boiler body 3 from the first water inlet 5, the boiler body 3 starts to work. During the operation of the boiler, the valve 8 is opened, and the sewage in the boiler enters the second sewage pipe 9 in the waste heat recovery tank 4 through the first sewage pipe 7. Water is added to the waste heat recovery tank 4 from the second water inlet 6. The water in the waste heat recovery tank 4 exchanges heat with the sewage in the second sewage pipe 9, so that the heat of the sewage in the second sewage pipe 9 is utilized. When the water in the waste heat recovery tank 4 reaches a certain temperature, the first water pump 12 pumps the waste heat recovery tank 4 to the second sewage pipe 9. 4 is pumped into the boiler body 3 for use through the first delivery pipe 10. The water has a certain temperature after heat exchange, so that it can reach the required temperature faster in the boiler body 3. After the boiler is discharged, the second water pump 13 pumps part of the water in the waste heat recovery tank 4 through the second delivery pipe 11 into the first sewage pipe 7. This part of clean water passes through the first sewage pipe 7 and the second sewage pipe 9 to flush the inside thereof, so as to prevent sewage from remaining in the first sewage pipe 7 and the second sewage pipe 9, which may cause safety hazards such as scaling and corrosion inside the first sewage pipe 7 and the second sewage pipe 9.
[0019] In this embodiment, a filter box 14 is fixedly connected to the frame 2, a third sewage pipe 15 connected to the second sewage pipe 9 is provided on the filter box 14, a filter screen 16 is provided in the filter box 14, and a fourth sewage pipe 17 is provided at the lower end of the filter box 14. The sewage after heat exchange enters the filter box 14 from the third sewage pipe 15, the filter screen 16 filters the impurities in the water, and the filtered water is discharged through the fourth sewage pipe 17, thereby reducing environmental pollution.
[0020] In this embodiment, the second sewage pipe 9 is an "S" shaped structure, which increases the contact area with water and improves the heat exchange efficiency.
[0021] In this embodiment, the waste heat recovery tank 4 is provided with a driving motor 18, and a stirring blade 19 is provided on the output shaft of the driving motor 18. The driving motor 18 drives the stirring blade 19 to rotate, and stirs the water in the waste heat recovery tank 4 to make its temperature more uniform, thereby improving the heat exchange efficiency.
[0022] In this embodiment, a temperature sensor 20 is provided on the waste heat recovery tank 4. The temperature of the water in the waste heat recovery tank 4 is detected by the temperature sensor 20.
[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. At the same time, the meaning of "and / or" appearing in the full text is that it includes three schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0025] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.
[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A coal-fired boiler wastewater recovery device, characterized in that: The invention comprises a frame (2), a boiler body (3) and a waste heat recovery tank (4) are fixedly connected to the frame (2), a first water inlet (5) is provided on the boiler body (3), a second water inlet (6) is provided on the waste heat recovery tank (4), a first sewage pipe (7) is provided between the boiler body (3) and the waste heat recovery tank (4), a valve (8) is provided on the first sewage pipe (7), a second sewage pipe (9) connected to the first sewage pipe (7) is provided in the waste heat recovery tank (4), a first delivery pipe (10) is further provided between the boiler body (3) and the waste heat recovery tank (4), a second delivery pipe (11) is provided between the waste heat recovery tank (4) and the first sewage pipe (7), a first water pump (12) is provided on the first delivery pipe (10), and a second water pump (13) is provided on the second delivery pipe (11).
2. The coal-fired boiler wastewater recovery device according to claim 1, characterized in that: A filter box (14) is fixedly connected to the frame (2), a third sewage pipe (15) connected to the second sewage pipe (9) is provided on the filter box (14), a filter screen (16) is provided inside the filter box (14), and a fourth sewage pipe (17) is provided at the lower end of the filter box (14).
3. The coal-fired boiler wastewater recovery device according to claim 1, characterized in that: The second sewage discharge pipe (9) is an "S"-shaped structure.
4. The coal-fired boiler wastewater recovery device according to claim 1, characterized in that: The waste heat recovery box (4) is provided with a driving motor (18), and an output shaft of the driving motor (18) is provided with a stirring blade (19).
5. The coal-fired boiler wastewater recovery device according to claim 1, characterized in that: The waste heat recovery box (4) is provided with a temperature sensor (20).