A boiler heat recovery device
By adding heat sinks and a stirring device to the boiler heat recovery unit, the problems of uneven heating and large particle deposition were solved, improving heat recovery efficiency and the maintainability of the unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUONENG TAIXU (SHANGHAI) LOW CARBON TECH CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional boiler heat recovery devices, the fixed installation of heat exchange pipes leads to uneven heating, and the deposition of large particulate matter in the flue gas affects the heat exchange efficiency.
Heat sinks are welded to the outside of the heat-conducting coil inside the water tank, and the water is stirred by a drive motor, stirring shaft and stirring rod. Meanwhile, a detachable filter cartridge and filter disc are installed at the flue pipe to filter large particles.
It improves heat exchange efficiency, avoids uneven heating, reduces the deposition of large particles, enhances heat exchange efficiency, and facilitates filter plate cleaning.
Smart Images
Figure CN224517473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boiler heat energy recovery technology, and in particular to a boiler heat energy recovery device. Background Technology
[0002] Flue gas is a major source of energy waste in general energy-consuming equipment. For example, boiler exhaust accounts for approximately 15% of energy consumption, while other equipment, such as stenters, dryers, and kilns in the printing and dyeing industry, also primarily consume energy through flue gas emissions. Flue gas waste heat recovery mainly involves converting the heat carried by the flue gas into usable heat through some form of heat exchange, thereby reducing energy waste.
[0003] Traditional boiler heat recovery devices mostly achieve heat recovery and utilization by exchanging heat between pipes and water inside the tank. However, the heat exchange pipes of traditional boiler heat recovery devices are mostly fixed inside the tank, which may result in uneven heating and make the water unusable after heat exchange.
[0004] Therefore, those skilled in the art have provided a boiler heat recovery device to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a boiler heat energy recovery device. By welding multiple heat dissipation fins to the outside of the heat-conducting coil installed inside the water storage tank, the contact area with the water can be increased, thereby improving the heat exchange efficiency. The design of the drive motor, stirring shaft and stirring rod in the middle of the heat exchange coil can stir the water for heat exchange, avoiding uneven heating.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A boiler heat recovery device includes a base plate and a water storage tank. The water storage tank is installed on the top of the base plate. A heat-conducting coil is installed inside the water storage tank. A flue pipe is fixedly installed at the air outlet end of the heat-conducting coil, and a flue pipe is fixedly installed at the air inlet end of the heat-conducting coil. A drive motor is installed on the top of the water storage tank. A stirring shaft is installed at the output end of the drive motor. Multiple stirring rods are installed at the outer end of the stirring shaft. Multiple heat dissipation fins are welded to the outer side of the heat-conducting coil. The above technical solution involves welding multiple heat dissipation fins onto the outside of the heat-conducting coil installed inside the water storage tank, thereby increasing the contact area with the water and improving heat exchange efficiency. The design of the drive motor, stirring shaft, and stirring rod in the middle of the heat exchange coil allows for stirring of the water, preventing uneven heating.
[0007] Furthermore, a filter cylinder is installed at one end of the smoke inlet pipe, a connecting plate is threaded onto the open end of the filter cylinder, a fixing frame is welded to the middle of the inside of the filter cylinder, and a filter plate is threaded onto one end of the fixing frame. The above technical solution improves the heat exchange efficiency of the device by installing a filter cartridge at the flue gas inlet pipe of the heat exchange coil and installing a filter disc inside the filter cartridge to facilitate the filtration of larger particulate matter in the flue gas. This reduces the deposition of large particulate matter inside the heat exchange coil, which affects the heat exchange efficiency of the heat exchange coil. Furthermore, the filter disc in this design is detachable, which facilitates cleaning of the filter disc later.
[0008] Furthermore, a drain pipe is installed at the bottom of one side of the water storage tank, a control valve is installed in the middle of the drain pipe, and a water inlet pipe is installed at the top of the water storage tank, with a cap threaded onto the top of the water inlet pipe. The above technical solution involves installing a drain pipe at the bottom of one side of the water storage tank, and a control valve in the middle of the drain pipe to facilitate the discharge of water from the tank. An inlet pipe is installed at the top of the tank, and a cap is threaded onto the top of the inlet pipe to facilitate the addition of cool water to the tank.
[0009] Furthermore, a threaded hole is provided in the middle of one side of the fixing frame, a threaded rod is threadedly installed at one end of the filter disc, and a fixing block is fixedly provided at the end of the filter disc away from the threaded rod; The above technical solution provides a threaded hole in the middle of one side of the fixing frame, and a threaded rod is threadedly installed at one end of the filter disc. The threaded connection between the threaded rod and the threaded hole facilitates the installation and removal of the filter disc. A fixing block is fixedly installed at the end of the filter disc away from the threaded rod to facilitate the rotation of the filter disc.
[0010] Furthermore, a human-machine interface is installed at one top end of the base plate, and the human-machine interface is electrically connected to the drive motor; With the above technical solution, a human-machine interface is installed at one end of the top of the base plate. The human-machine interface is electrically connected to the drive motor, which facilitates the control of the entire device.
[0011] Furthermore, self-locking casters are installed at all four corners of the bottom of the base plate; With the above technical solution, self-locking casters are installed at the four corners of the bottom of the base plate to facilitate the movement of the control device.
[0012] This utility model has the following beneficial effects: 1. The boiler heat energy recovery device proposed in this utility model has multiple heat dissipation fins welded to the outside of the heat-conducting coil installed inside the water storage tank, which can increase the contact area with the water and thus improve the heat exchange efficiency. The design of the drive motor, stirring shaft and stirring rod in the middle of the heat exchange coil can stir the water for heat exchange and avoid uneven heating.
[0013] 2. The boiler heat energy recovery device proposed in this utility model has a filter cylinder installed at the flue gas inlet pipe of the heat exchange coil, and a filter disc installed inside the filter cylinder to facilitate the filtration of larger particulate matter in the flue gas. This reduces the deposition of large particulate matter inside the heat exchange coil, which affects the heat exchange efficiency of the heat exchange coil, and further improves the heat exchange efficiency of the device. In addition, the connecting plate and the filter disc in this design are detachable, which facilitates the cleaning of the inside of the filter cylinder later. Attached Figure Description
[0014] Figure 1 This is a front axonometric drawing of a boiler heat recovery device proposed in this utility model; Figure 2 This is a cross-sectional view of a boiler heat recovery device proposed in this utility model; Figure 3 This is an internal isometric view of a boiler heat recovery device proposed in this utility model; Figure 4 This is a rear axonometric view of a boiler heat recovery device proposed in this utility model; Figure 5 for Figure 2 Enlarged view of point A in the middle.
[0015] Explanation of reference numerals in the attached figures: 1. Base plate; 2. Water storage tank; 3. Heat transfer coil; 4. Exhaust pipe; 5. Inlet pipe; 6. Filter cylinder; 7. Connecting plate; 8. Drive motor; 9. Stirring shaft; 10. Stirring rod; 11. Heat sink; 12. Fixing frame; 13. Threaded hole; 14. Filter plate; 15. Fixing block; 16. Threaded rod; 17. Water inlet pipe; 18. Drain pipe; 19. Human-machine interface; 20. Self-locking casters. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Reference Figure 1-5 This utility model provides a specific implementation method: A boiler heat recovery device includes a base plate 1 and a water storage tank 2. The water storage tank 2 is installed on top of the base plate 1. A heat-conducting coil 3 is installed inside the water storage tank 2. A flue pipe 4 is fixedly installed at the air outlet end of the heat-conducting coil 3, and a flue pipe 5 is fixedly installed at the air inlet end of the heat-conducting coil 3. A drive motor 8 is installed on the top of the water storage tank 2. A stirring shaft 9 is installed at the output end of the drive motor 8. Multiple stirring rods 10 are installed at the outer end of the stirring shaft 9. Multiple heat dissipation fins 11 are welded to the outside of the heat-conducting coil 3. By welding multiple heat dissipation fins 11 to the outside of the heat-conducting coil 3 installed inside the water storage tank 2, the contact area with the water can be increased, thereby improving the heat exchange efficiency. The design of the drive motor 8, stirring shaft 9 and stirring rods 10 in the middle of the heat exchange coil can stir the water for heat exchange, avoiding uneven heating.
[0018] A filter cylinder 6 is installed at one end of the flue gas inlet pipe 5. A connecting plate 7 is threaded onto the open end of the filter cylinder 6. A fixing frame 12 is welded to the middle of the inside of the filter cylinder 6. A filter plate 14 is threaded onto one end of the fixing frame 12. By installing the filter cylinder 6 at the flue gas inlet pipe 5 of the heat exchange coil and installing the filter plate 14 inside the filter cylinder 6, it is convenient to filter larger particulate matter in the flue gas, reducing the deposition of large particulate matter inside the heat exchange coil and thus affecting the heat exchange efficiency of the heat exchange coil ring, thereby further improving the device. The heat exchange efficiency is high, and the filter disc 14 in this design is detachable for easy cleaning later. A drain pipe 18 is installed at the bottom of one side of the water storage tank 2, and a control valve is installed in the middle of the drain pipe 18. A water inlet pipe 17 is installed at the top of the water storage tank 2, and a cap is threaded onto the top of the water inlet pipe 17. A drain pipe 18 is installed at the bottom of one side of the water storage tank 2, and a control valve is installed in the middle of the drain pipe 18 to facilitate the control of the water discharge from the water storage tank 2. A water inlet pipe 17 is installed at the top of the water storage tank 2. A cap is threaded onto the top of water pipe 17 to facilitate the addition of cold water to water storage tank 2. A threaded hole 13 is provided in the middle of one side of the fixing bracket 12. A threaded rod 16 is threaded onto one end of the filter disc 14. A fixing block 15 is fixedly installed at the end of the filter disc 14 away from the threaded rod 16. The threaded connection between the threaded rod 16 and the threaded hole 13 facilitates the installation and removal of the filter disc 14. A fixing block 15 is fixedly installed at the end of the filter disc 14 away from the threaded rod 16 to facilitate rotation of the filter disc 14. A human-machine interface 19 is installed at the top end of the base plate 1. The human-machine interface 19 is electrically connected to the drive motor 8. The human-machine interface 19 is installed at the top end of the base plate 1 to facilitate control of the entire device. Self-locking casters 20 are installed at the four corners of the bottom of the base plate 1 to facilitate movement of the control device.
[0019] Working principle: Multiple heat dissipation fins 11 are welded to the outside of the heat-conducting coil 3 installed inside the water storage tank 2, thereby increasing the contact area with the water and improving the heat exchange efficiency. The design of the drive motor 8, stirring shaft 9, and stirring rod 10 in the middle of the heat exchange coil can stir the water for heat exchange, avoiding uneven heating. By installing a filter cylinder 6 at the flue gas inlet pipe 5 of the heat exchange coil, and installing a filter disc 14 inside the filter cylinder 6, it is convenient to filter larger particulate matter in the flue gas, reducing the deposition of large particles inside the heat exchange coil and thus affecting the heat exchange efficiency of the heat exchange coil, further improving the heat exchange efficiency of the device. In addition, the connecting plate 7 and the filter disc 14 in this design are detachable, which facilitates the cleaning of the inside of the filter cylinder 6 later.
[0020] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.
[0021] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A boiler heat recovery device comprising a base plate (1) and a water storage tank (2), characterized in that: The water tank (2) is installed on the top of the base plate (1). A heat-conducting coil (3) is installed inside the water tank (2). A smoke exhaust pipe (4) is fixedly installed at the air outlet end of the heat-conducting coil (3). A smoke inlet pipe (5) is fixedly installed at the air inlet end of the heat-conducting coil (3). A drive motor (8) is installed on the top of the water tank (2). A stirring shaft (9) is installed at the output end of the drive motor (8). Multiple stirring rods (10) are installed at the outer end of the stirring shaft (9). Multiple heat sinks (11) are welded to the outer side of the heat-conducting coil (3).
2. A boiler heat recovery device according to claim 1, characterised in that: A filter cylinder (6) is installed at one end of the smoke inlet pipe (5). A connecting plate (7) is threaded onto one open end of the filter cylinder (6). A fixing frame (12) is welded to the middle of the inside of the filter cylinder (6). A filter plate (14) is threaded onto one end of the fixing frame (12).
3. A boiler heat recovery device according to claim 1, characterized in that: A drain pipe (18) is installed at the bottom of one side of the water storage tank (2), a control valve is installed in the middle of the drain pipe (18), and an inlet pipe (17) is installed at the top of the water storage tank (2). A cap is threaded onto the top of the inlet pipe (17).
4. A boiler heat recovery device according to claim 2, characterised in that: A threaded hole (13) is provided in the middle of one side of the fixing frame (12), a threaded rod (16) is threadedly installed at one end of the filter disc (14), and a fixing block (15) is fixedly provided at the end of the filter disc (14) away from the threaded rod (16).
5. A boiler heat recovery device according to claim 1, characterized in that: A human-machine interface (19) is installed at one end of the top of the base plate (1), and the human-machine interface (19) is electrically connected to the drive motor (8).
6. A boiler heat recovery device according to claim 1, characterized in that: The bottom of the base plate (1) is equipped with self-locking casters (20) at all four corners.