A heat exchange station self-cleaning filter device

Abstract

This invention discloses a self-cleaning filtration device for a heat exchange station, belonging to the technical field of boiler components. The self-cleaning filtration device for a heat exchange station includes a boiler body, heat exchange pipes installed on the boiler body, and a cooling tank connected to the heat exchange pipes. The heat exchange pipes are arranged around the outer wall of the boiler body. One end of each heat exchange pipe is connected to a return pipe, and the other end is connected to an inlet pipe. Both the return pipe and the inlet pipe are connected to the cooling tank. The cooling tank is equipped with upper and lower partition plates, which divide the cooling tank into upper and lower chambers, with the return pipe connected to the upper chamber. The self-cleaning filtration device for a heat exchange station provided by this invention, when the water pump is started, can send the coolant inside the cleaning tank into the backwash pipe, and finally discharge it from the outlet of the backwash pipe. The coolant backwashes the third filter plate, the second filter plate, and the first filter plate, pushing away impurities clogging the filter holes.

Description

Technical Field

[0001] This invention belongs to the technical field of boiler components, specifically relating to a self-cleaning filter device for a heat exchange station. Background Technology

[0002] Heat exchange stations, as core hubs for heat energy conversion and distribution, occupy an important position in industrial heating and district heating. Boilers, as the main heat source equipment in heat exchange stations, generate a large amount of heat during operation. Some of this heat is dissipated into the surrounding environment through radiation and convection via the boiler walls, resulting in energy waste and potentially causing overheating of the boiler body and surrounding equipment, affecting its service life and operational safety. Therefore, existing technologies typically install heat exchange pipes outside the boiler body. The circulating coolant in these pipes carries away heat from the vicinity of the boiler body and transfers it to heat exchange equipment such as cooling tanks for dissipation, achieving effective heat management and boiler body temperature control.

[0003] During the long-term circulation of coolant, welding residues, metal oxide scale, sealing material debris, and other mechanical impurities inevitably exist in the system piping. Combined with precipitates that may form in the coolant itself due to temperature changes, these solid particles continuously flow through the piping system. If the coolant is not effectively filtered, these impurities will gradually accumulate in pipe bends, valves, heat exchanger channels, and other areas, leading to increased flow resistance, decreased heat exchange efficiency, and even serious consequences such as pipe blockage or equipment damage.

[0004] To address these issues, existing cooling circulation systems typically incorporate filtration devices, commonly employing filter screens or plates installed in the cooling tank or piping to intercept solid impurities in the coolant. However, such conventional filtration devices have significant shortcomings in practical applications.

[0005] After intercepting impurities, the filter plates' pores are easily clogged, leading to reduced coolant flow and increased system circulation pressure drop. Existing filtration devices lack effective self-cleaning structures, making it difficult to remove impurities adhering to the filter elements and clogging the pores without disassembly. This results in the pores gradually becoming clogged over time, increasing the kinetic energy consumed by coolant flow. Therefore, this application proposes a self-cleaning filtration device for heat exchange stations. Summary of the Invention

[0006] The purpose of this invention is to provide a self-cleaning filter device for heat exchange stations, in order to solve the problem mentioned in the background art that existing filter devices lack an effective self-cleaning structure and that it is difficult to remove impurities that clog the filter holes without disassembling them.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning filter device for a heat exchange station, comprising a boiler body, heat exchange pipes installed on the boiler body, and a cooling tank connected to the heat exchange pipes, wherein the heat exchange pipes are arranged around the outer wall of the boiler body. One end of the heat exchange pipe is connected to the return pipe, and the other end is connected to the liquid inlet pipe. Both the return pipe and the liquid inlet pipe are connected to the cooling tank. The cooling tank is equipped with upper and lower partition plates, which divide the cooling tank into upper and lower chambers. The return pipe is connected to the upper chamber, while the liquid inlet pipe is connected to the lower chamber. A filter tank connected to the return pipe is installed in the upper chamber. The filter tank is equipped with a first filter plate, a second filter plate, and a third filter plate; The filter tank contains a backwash pipe and a cleaning tank connected to the backwash pipe, with the outlet of the backwash pipe aligned with the third filter plate.

[0008] Preferably, multiple heat exchange pipes are provided, and the multiple heat exchange pipes are arranged vertically aligned.

[0009] Preferably, the boiler body is provided with several boiler support legs for supporting the ground, a top operating area, and a ladder installed on the outer wall of the boiler body and connected to the top operating area.

[0010] Preferably, the boiler body is provided with an operating area guardrail, which surrounds the top operating area.

[0011] Preferably, the top of the cooling tank is provided with a top cover and a liquid replenishment pipe inserted into the top cover.

[0012] Preferably, the outer wall at the bottom of the filter tank is provided with several water outlet holes, the third filter plate is located above the water outlet holes, the return pipe is connected to the filter tank, and the replenishment pipe is connected to the filter tank.

[0013] Preferably, the cooling tank is provided with a cleaning plate, a cleaning brush mounted on the cleaning plate and in contact with the outer wall of the filter tank, a mounting bracket mounted on the inner wall of the filter tank and rotatably cooperating with the cleaning plate, and a drive mechanism fixedly connected to the mounting bracket and used to drive the cleaning plate to rotate around the center line of the cooling tank.

[0014] Preferably, the cleaning box is installed on the outer wall of the cooling tank, the backwash pipe penetrates the outer wall of the cooling tank, and the tops of the first filter plate, the second filter plate, and the third filter plate are all set with conical surfaces.

[0015] Preferably, the drive mechanism includes a transmission gear, a drive gear, and a power motor. The transmission gear is fixedly connected to the cleaning plate, the center line of the transmission gear coincides with the center line of the filter tank, the transmission gear and the drive gear are connected by gear meshing, the transmission gear is rotatably engaged with the mounting frame, the drive gear is rotatably engaged with the mounting frame, the drive gear is connected to the output shaft of the power motor, and the power motor is mounted on the mounting frame.

[0016] Preferably, the cooling tank is provided with a lower mounting base fixedly connected to it and an upper pressure plate detachably connected to the lower mounting base, with an upper and lower partition plate located between the lower mounting base and the upper pressure plate.

[0017] Beneficial effects: This invention provides a self-cleaning filtration device for a heat exchange station. When the water pump is started, the coolant inside the cleaning tank is sent into the backwash pipe and finally discharged from the outlet of the backwash pipe. The outlet of the backwash pipe is aligned with the third, second, and first filter plates. In this way, the coolant impacts the third, second, and first filter plates in the reverse direction, pushing away impurities clogging the filter holes. Furthermore, the impurities, under their own gravity, flow along the conical surface at the top of the filter plates and ultimately remain at the point where the filter plates meet the filter tank. This ensures that the filter holes are clear, allowing the filter plates to perform their filtration function normally.

[0018] This invention provides a self-cleaning filtration device for a heat exchange station. The drive mechanism can drive the cleaning plate to rotate, and the cleaning plate is rotatably mounted on the mounting frame. When the mounting frame rotates, it will rotate around the center line of the filter tank. Thus, when the drive mechanism is turned on, it can drive the cleaning plate and cleaning brush to rotate. The cleaning brush cleans the outer wall of the filter tank. With the help of the coolant discharged from the backwash pipe, the outer wall of the filter tank can be cleaned and the inner wall can be flushed, so as to prevent impurities in the coolant from clogging the water outlet and ensure the cleanliness of the filter tank. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the self-cleaning filter device in the heat exchange station of the present invention; Figure 2 This is the second schematic diagram of the structure of the self-cleaning filter device in the heat exchange station of the present invention; Figure 3 This is one of the internal structural diagrams of the self-cleaning filter device in the heat exchange station of the present invention; Figure 4 This is the second schematic diagram of the internal structure of the self-cleaning filter device in the heat exchange station of the present invention; Figure 5 This is a schematic diagram of the upper and lower partition plates in this invention.

[0020] Explanation of reference numerals in the attached figures: 1. Boiler body; 2. Heat exchange pipes; 3. Return pipes; 4. Liquid inlet pipes; 5. Cooling tank; 6. Boiler support legs; 7. Top operating area; 8. Ladder; 9. Operating area guardrail; 10. Top cover; 11. Liquid replenishment pipe; 12. Filter tank; 1201. Water outlet; 13. First filter plate; 14. Second filter plate; 15. Third filter plate; 16. Cleaning plate; 17. Cleaning brush; 18. Mounting bracket; 19. Drive mechanism; 20. Upper and lower partition plates; 21. Lower mounting base; 22. Upper pressure plate; 23. Backwash pipe; 24. Cleaning tank. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] like Figures 1-5 As shown in the figure, the self-cleaning filter device for a heat exchange station provided in this embodiment of the invention includes a boiler body 1, a heat exchange pipe 2 installed on the boiler body 1, and a cooling tank 5 connected to the heat exchange pipe 2. The heat exchange pipe 2 is arranged around the outer wall of the boiler body 1. There are multiple heat exchange pipes 2, and the multiple heat exchange pipes 2 are arranged vertically aligned. Cooling liquid flows inside them. During the flow of the cooling liquid, it can carry away the heat near the boiler body 1 and carry it to the cooling tank 5.

[0023] Specifically, one end of the heat exchange pipe 2 is connected to the return pipe 3, and the other end is connected to the liquid inlet pipe 4. Both the return pipe 3 and the liquid inlet pipe 4 are connected to the cooling tank 5. Thus, the heat absorbed by the heat exchange pipe 2 from the boiler body 1 is transferred to the cooling tank 5 through the return pipe 3 and the liquid inlet pipe 4. The cooling tank 5 can be buried underground or set up in other areas with lower temperatures, or a corresponding cooling mechanism can be set up there to lower the temperature of the coolant inside. In this way, the coolant circulates and can carry away the heat from the boiler body 1.

[0024] Specifically, the boiler body 1 is equipped with several boiler support legs 6 for supporting the ground, a top operating area 7, and a ladder 8 installed on the outer wall of the boiler body 1 and connected to the top operating area 7. In order to ensure the safety of the staff in the top operating area 7, an operating area guardrail 9 is installed in the boiler body 1, and the operating area guardrail 9 is set around the top operating area 7.

[0025] During the circulation process, the coolant will gradually decrease due to factors such as evaporation. Therefore, a top cover 10 and a replenishment pipe 11 inserted into the top cover 10 are provided on the top of the coolant tank 5.

[0026] Specifically, the cooling tank 5 is equipped with upper and lower partition plates 20, which divide the cooling tank 5 into upper and lower chambers. The return pipe 3 connects to the upper chamber, while the liquid inlet pipe 4 connects to the lower chamber. The upper and lower chambers are connected. A filter tank 12 is installed in the upper chamber. The filter tank 12 can filter the coolant flowing in from the return pipe 3, so that the coolant can enter the lower chamber after filtration. In this way, the circulating coolant can be filtered to remove pipe residues and other impurities that adhere to the coolant during its flow, ensuring that the coolant can flow normally and smoothly.

[0027] In order to filter the coolant, a first filter plate 13, a second filter plate 14, and a third filter plate 15 are provided in the filter tank 12. The top of the first filter plate 13, the second filter plate 14, and the third filter plate 15 are all set as conical surfaces, that is, high in the middle and low at both ends.

[0028] Specifically, the outer wall at the bottom of the filter tank 12 is provided with several water outlet holes 1201, the third filter plate 15 is located above the water outlet holes 1201, the return pipe 3 is connected to the filter tank 12, and the outlet of the return pipe 3 needs to be at least above the third filter plate 15. It should be noted that the replenishment pipe 11 is connected to the filter tank 12.

[0029] Specifically, in order to clean the filter tank 12, a cleaning plate 16, a cleaning brush 17 mounted on the cleaning plate 16 and in contact with the outer wall of the filter tank 12, a mounting bracket 18 mounted on the inner wall of the filter tank 12 and rotatably engaged with the cleaning plate 16, and a drive mechanism 19 fixedly connected to the mounting bracket 18 and used to drive the cleaning plate 16 to rotate around the center line of the cooling tank 5 are provided inside the cooling tank 5.

[0030] The drive mechanism 19 can drive the cleaning plate 16 to rotate. The cleaning plate 16 is rotatably mounted on the mounting frame 18. When the mounting frame 18 rotates, it will revolve around the center line of the filter tank 12. Thus, when the drive mechanism 19 is turned on, it can drive the cleaning plate 16 and the cleaning brush 17 to rotate. The cleaning brush 17 cleans the outer wall of the filter tank 12. With the coolant discharged from the backwash pipe 23, the outer wall of the filter tank 12 can be cleaned and the inner wall can be flushed, so as to prevent impurities in the coolant from clogging the water outlet 1201 and ensure the cleanliness of the filter tank 12.

[0031] It should be noted that a backwash pipe 23 and a cleaning tank 24 connected to the backwash pipe 23 are inserted into the filter tank 12. The cleaning tank 24 is installed on the outer wall of the cooling tank 5. The backwash pipe 23 penetrates the outer wall of the cooling tank 5. The outlet of the backwash pipe 23 is aligned with the third filter plate 15. A water pump is installed in the cleaning tank 24, and the cleaning tank 24 is filled with the same coolant that flows through the cooling pipe.

[0032] When the water pump is started, the coolant inside the cleaning tank 24 is sent into the backwash pipe 23 and finally discharged from the outlet of the backwash pipe 23. The outlet of the backwash pipe 23 is aligned with the third filter plate 15, the second filter plate 14, and the first filter plate 13. In this way, the coolant impacts the third filter plate 15, the second filter plate 14, and the first filter plate 13 in the reverse direction, which can push away the impurities clogging the filter holes. Under the action of their own gravity, the impurities will flow along the top conical surface of the filter plate and finally stay at the position where the filter plate is in contact with the filter tank 12. In this way, the filter holes are unobstructed, and the filter plates can perform filtering work normally.

[0033] Specifically, the drive mechanism 19 includes a transmission gear, a drive gear, and a power motor. The transmission gear is fixedly connected to the cleaning plate 16. The center line of the transmission gear coincides with the center line of the filter tank 12. The transmission gear and the drive gear are connected by gear meshing. The transmission gear is rotatably engaged with the mounting bracket 18. The drive gear is rotatably engaged with the mounting bracket 18. The drive gear is connected to the output shaft of the power motor. The two can be connected by a flat key or keyway. The power motor is mounted on the mounting bracket 18.

[0034] The connection between the power motor and the drive gear can be sealed to prevent coolant from connecting to the connection. In operation, the power motor is started, which drives the drive gear to rotate. The drive gear and the transmission gear are connected by meshing. Thus, the rotating drive gear can drive the transmission gear to rotate, which in turn drives the cleaning plate 16 and the cleaning brush 17 to rotate. The rotating cleaning brush 17 can clean the outer wall of the filter tank 12.

[0035] Specifically, the cooling tank 5 is provided with a fixedly connected lower mounting base 21 and an upper pressure plate 22 detachably connected to the lower mounting base 21. The upper and lower partition plates 20 are located between the lower mounting base 21 and the upper pressure plate 22. The lower mounting base 21 and the upper pressure plate 22 are fixedly connected by a pin.

[0036] In summary, this invention provides a self-cleaning filtration device for a heat exchange station. The device is connected to a cooling tank 5 via a return pipe 3 and an inlet pipe 4. The heat absorbed from the boiler body 1 at the heat exchange pipe 2 is transferred to the cooling tank 5. The heat transfer through the cooling tank 5 reduces the temperature of the coolant in the cooling tank 5. In this way, the coolant circulates and carries away the heat from the boiler body 1. The upper cavity is equipped with a filter tank 12, which can filter the coolant flowing in from the return pipe 3, so that the coolant can enter the lower cavity after filtration. In this way, the circulating coolant can be filtered to remove pipe residues and other impurities that adhere to the coolant during its flow, ensuring that the coolant can flow normally and smoothly.

[0037] When the water pump is started, the coolant inside the cleaning tank 24 is sent into the backwash pipe 23 and finally discharged from the outlet of the backwash pipe 23. The outlet of the backwash pipe 23 is aligned with the third filter plate 15, the second filter plate 14, and the first filter plate 13. In this way, the coolant impacts the third filter plate 15, the second filter plate 14, and the first filter plate 13 in the reverse direction, which can push away the impurities clogging the filter holes. Under the action of their own gravity, the impurities will flow along the top conical surface of the filter plate and finally stay at the position where the filter plate is in contact with the filter tank 12. In this way, the filter holes are unobstructed, and the filter plates can perform filtering work normally.

[0038] The drive mechanism 19 can drive the cleaning plate 16 to rotate. The cleaning plate 16 is rotatably mounted on the mounting frame 18. When the mounting frame 18 rotates, it will revolve around the center line of the filter tank 12. Thus, when the drive mechanism 19 is turned on, it can drive the cleaning plate 16 and the cleaning brush 17 to rotate. The cleaning brush 17 cleans the outer wall of the filter tank 12. With the coolant discharged from the backwash pipe 23, the outer wall of the filter tank 12 can be cleaned and the inner wall can be flushed, so as to prevent impurities in the coolant from clogging the water outlet 1201 and ensure the cleanliness of the filter tank 12.

[0039] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A self-cleaning filtration device for a heat exchange station, comprising a boiler body (1), a heat exchange pipe (2) installed on the boiler body (1), and a cooling tank (5) connected to the heat exchange pipe (2), characterized in that, The heat exchange pipe (2) is arranged around the outer wall of the boiler body (1); The heat exchange pipe (2) is connected to the return pipe (3) at one end and to the liquid inlet pipe (4) at the other end. Both the return pipe (3) and the liquid inlet pipe (4) are connected to the cooling tank (5). The cooling tank (5) is provided with an upper and lower partition plate (20), which divides the cooling tank (5) into two chambers, an upper and a lower chamber. The return pipe (3) is connected to the upper chamber, while the liquid inlet pipe (4) is connected to the lower chamber. A filter tank (12) connected to the return pipe (3) is provided in the upper chamber. The filter tank (12) is provided with a first filter plate (13), a second filter plate (14), and a third filter plate (15). The filter tank (12) is equipped with a backwash pipe (23) and a cleaning tank (24) connected to the backwash pipe (23). The outlet of the backwash pipe (23) is aligned with the third filter plate (15).

2. The self-cleaning filtration device for a heat exchange station as described in claim 1, characterized in that, The heat exchange pipes (2) are provided in multiple ways, and the multiple heat exchange pipes (2) are arranged vertically aligned.

3. The self-cleaning filtration device for a heat exchange station as described in claim 1, characterized in that, The boiler body (1) is provided with several boiler support legs (6) for supporting the ground, a top operating area (7), and a ladder (8) installed on the outer wall of the boiler body (1) and connected to the top operating area (7).

4. The self-cleaning filtration device for a heat exchange station as described in claim 3, characterized in that, An operating area guardrail (9) is provided at the boiler body (1), and the operating area guardrail (9) is set around the top operating area (7).

5. The self-cleaning filtration device for a heat exchange station as described in claim 1, characterized in that, The cooling tank (5) is provided with a top cover (10) and a liquid replenishment pipe (11) inserted into the top cover (10).

6. The self-cleaning filtration device for a heat exchange station as described in claim 5, characterized in that, The filter tank (12) has several water outlet holes (1201) on the outer wall at the bottom. The third filter plate (15) is located above the water outlet holes (1201). The return pipe (3) is connected to the filter tank (12). The replenishment pipe (11) is connected to the filter tank (12).

7. The self-cleaning filtration device for a heat exchange station as described in claim 1, characterized in that, The cooling tank (5) is provided with a cleaning plate (16), a cleaning brush (17) mounted on the cleaning plate (16) and attached to the outer wall of the filter tank (12), a mounting bracket (18) mounted on the inner wall of the filter tank (12) and rotatably engaged with the cleaning plate (16), and a drive mechanism (19) fixedly connected to the mounting bracket (18) and used to drive the cleaning plate (16) to rotate around the center line of the cooling tank (5).

8. The self-cleaning filter device for a heat exchange station as described in claim 1, characterized in that, The cleaning tank (24) is installed on the outer wall of the cooling tank (5), and the backwash pipe (23) penetrates the outer wall of the cooling tank (5). The tops of the first filter plate (13), the second filter plate (14), and the third filter plate (15) are all set as conical surfaces.

9. A self-cleaning filtration device for a heat exchange station as described in claim 7, characterized in that, The drive mechanism (19) includes a transmission gear, a drive gear, and a power motor. The transmission gear is fixedly connected to the cleaning plate (16). The center line of the transmission gear coincides with the center line of the filter tank (12). The transmission gear and the drive gear are connected by gear meshing. The transmission gear is rotatably engaged with the mounting frame (18). The drive gear is rotatably engaged with the mounting frame (18). The drive gear is connected to the output shaft of the power motor. The power motor is mounted on the mounting frame (18).

10. A self-cleaning filtration device for a heat exchange station as described in claim 1, characterized in that, The cooling tank (5) is provided with a fixedly connected lower mounting base (21) and an upper pressure plate (22) detachably connected to the lower mounting base (21). The upper and lower partition plates (20) are located between the lower mounting base (21) and the upper pressure plate (22).

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