Waste heat recovery device convenient to clean

Abstract

The utility model discloses a waste heat recovery device convenient to clean, which relates to the technical field of waste heat recovery devices, and comprises a water storage tank, a plurality of heat exchange tubes, a plurality of support rod pieces, a plurality of brush plates and an ash discharge port, the two ends of the water storage tank are opened, the plurality of heat exchange tubes are arranged in sequence, the heat exchange tubes are arranged in a star shape, and the heat exchange tubes are in sliding connection with the water storage tank. The multiple supporting rod pieces correspond to the heat exchange pipes one to one, the supporting rod pieces are inserted into the heat exchange pipes, the supporting rod pieces are fixedly connected with the left end of the water storage tank, the multiple brush plates correspond to the supporting rod pieces one to one, the brush plates are detachably connected with the right ends of the supporting rod pieces, the brush plates are arranged in a star shape, and when the heat exchange pipes slide in the water storage tank, the brush plates scrape and clean the inner walls of the heat exchange pipes. The ash outlet is formed in the bottom of the water storage tank. The inner wall of the heat exchange tube is matched with the star-shaped brush plate, so that the star-shaped brush plate slides on the inner wall of the heat exchange tube, and smoke particles and impurities attached to the inner wall of the heat exchange tube are scraped and cleaned.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices, and in particular to a waste heat recovery device that is easy to clean. 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.

[0003] Current recycling operations typically involve passing waste flue gas into heat exchange tubes in a water medium, transferring the heat from the heat exchange tubes to the water medium, thereby effectively recovering the waste heat from the waste flue gas.

[0004] However, due to the large amount of impurities and dust in the waste gas, the heat exchange tubes will accumulate a thick layer of dust particles and impurities on their inner walls after long-term circulation of waste gas, affecting the heat exchange efficiency. The heat exchange tubes of the current waste heat recovery devices are very difficult to clean. Therefore, a waste heat recovery device that is easy to clean is needed to solve the current problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a waste heat recovery device that is easy to clean. The inner wall of the heat exchange tube and a star-shaped brush plate cooperate with each other, allowing the star-shaped brush plate to slide on the inner wall of the heat exchange tube to scrape and clean the dust particles and impurities attached to the inner wall of the heat exchange tube.

[0006] The technical solution adopted to solve the above-mentioned technical problems is: a waste heat recovery device that is easy to clean, including a water storage tank, multiple heat exchange tubes, multiple support rods, multiple brush plates, and an ash discharge port. The water storage tank is open at both ends. The multiple heat exchange tubes are arranged in sequence in a star shape and are slidably connected to the water storage tank. The multiple support rods correspond one-to-one with the heat exchange tubes and are inserted into the heat exchange tubes. The support rods are fixedly connected to the left end of the water storage tank. The multiple brush plates correspond one-to-one with the support rods and are detachably connected to the right end of the support rods. The brush plates are star-shaped. When the heat exchange tubes slide in the water storage tank, the brush plates scrape and clean the inner wall of the heat exchange tubes. The ash discharge port is located at the bottom of the water storage tank.

[0007] Furthermore, it also includes an air inlet pipe, a docking ring, a connecting plate, and a sliding pipe. The air inlet pipe is connected to the left end opening of the water storage tank, the docking ring is connected to the left end opening of the water storage tank and is located inside the water storage tank, a sealing ring is connected to one side of the connecting plate, and the connecting plate is sealed to the docking ring through the sealing ring, the heat exchange pipe is connected to the connecting plate and the air inlet pipe, and the sliding pipe is slidably connected to the right end opening of the water storage tank. After the sliding pipe is positioned, it is sealed to the water storage tank, and the heat exchange pipe is connected to the sliding pipe.

[0008] Furthermore, it also includes a pressure plate, a discharge pipe, and an exhaust pipe. The pressure plate is screwed to the right end of the sliding pipe, the discharge pipe is connected to the pressure plate, and the exhaust pipe is detachably connected to the discharge pipe via a connector.

[0009] Furthermore, it also includes multiple connecting pipes that connect the right sides of the multiple heat exchange tubes.

[0010] Furthermore, it also includes multiple lead screws, multiple clamping components, and multiple locking nuts. The multiple lead screws are evenly connected to the right end of the water storage tank. The multiple clamping components correspond one-to-one with the lead screws. The clamping components are movably sleeved on the lead screws and clamp the pressure plate. The multiple locking nuts correspond one-to-one with the lead screws and are screwed onto the lead screws.

[0011] The beneficial effects of this utility model are as follows: By setting the heat exchange tube to a straight star shape, this utility model can not only effectively increase the heat exchange area and improve the heat recovery efficiency, but also facilitate the cooperation with the support rod and brush plate. During the sliding process of the heat exchange tube in the water storage tank, the inner wall of the heat exchange tube and the star-shaped brush plate cooperate with each other, so that the star-shaped brush plate slides on the inner wall of the heat exchange tube, scraping and cleaning the dust particles and impurities attached to the inner wall of the heat exchange tube. After the heat exchange tube slides out of the water storage tank, the brush plate has completed the cleaning of the inner wall of the heat exchange tube. The scraped impurities and dust fall into the water storage tank and are cleaned through the ash discharge port, effectively solving the problem of the heat exchange tubes of traditional waste heat recovery devices being extremely difficult to clean. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the heat exchange tube structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the support member structure of this utility model.

[0015] Figure 4 This is a schematic diagram showing the position of the support member of this utility model.

[0016] Figure 5 This is a schematic diagram showing the position of the pressure plate of this utility model.

[0017] Figure 6 This is a schematic diagram of the pressure plate structure of this utility model.

[0018] Reference numerals in the attached drawings: 1. Water storage tank; 2. Heat exchange tube; 3. Support rod; 4. Brush plate; 5. Ash discharge port; 6. Air inlet pipe; 7. Connecting ring; 8. Connecting plate; 9. Sealing ring; 10. Sliding tube; 11. Pressure plate; 12. Outlet pipe; 13. Exhaust pipe; 14. Connecting pipe fitting; 15. Screw rod; 16. Clamping component; 17. Locking nut; 18. Connecting joint. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] like Figures 1-6 As shown, this embodiment provides a waste heat recovery device that is easy to clean, including a water storage tank 1, multiple heat exchange tubes 2, multiple support rods 3, multiple brush plates 4, and an ash discharge port 5. The water storage tank 1 is open at both ends. The multiple heat exchange tubes 2 are arranged in sequence in a star shape and are slidably connected to the water storage tank 1. The multiple support rods 3 correspond one-to-one with the heat exchange tubes 2 and are inserted into the heat exchange tubes 2. The support rods 3 are fixedly connected to the left end of the water storage tank 1. The multiple brush plates 4 correspond one-to-one with the support rods 3 and are detachably connected to the right end of the support rods 3. The brush plates 4 are arranged in a star shape. When the heat exchange tubes 2 slide in the water storage tank 1, the brush plates 4 scrape and clean the inner wall of the heat exchange tubes 2. The ash discharge port 5 is located at the bottom of the water storage tank 1.

[0021] This invention solves the problem of cleaning heat exchange tubes 2 by setting them as straight star-shaped tubes. The star shape not only effectively increases the heat exchange area and improves the heat recovery efficiency, but the straight tube design also facilitates cooperation with the support rod 3 and the brush plate 4. During the sliding process of heat exchange tube 2 in the water storage tank 1, the inner wall of heat exchange tube 2 cooperates with the star-shaped brush plate 4, allowing the brush plate 4 to slide on the inner wall of heat exchange tube 2 and scrape off the dust particles and impurities attached to the inner wall of heat exchange tube 2. After the heat exchange tube 2 slides out of the water storage tank 1, the brush plate 4 has completed the cleaning of the inner wall of heat exchange tube 2. The scraped impurities and dust fall into the water storage tank 1 and are cleaned through the ash discharge port 5, effectively solving the problem of the heat exchange tube 2 being extremely difficult to clean in traditional waste heat recovery devices.

[0022] Specifically, it also includes an air inlet pipe 6, a docking ring 7, a connecting plate 8, and a sliding pipe 10. The air inlet pipe 6 is connected to the left end opening of the water storage tank 1. The docking ring 7 is connected to the left end opening of the water storage tank 1 and is located inside the water storage tank 1. A sealing ring 9 is connected to one side of the connecting plate 8. The connecting plate 8 is sealed to the docking ring 7 through the sealing ring 9. The heat exchange pipe 2 is connected to the connecting plate 8 and the air inlet pipe 6. The sliding pipe 10 is slidably connected to the right end opening of the water storage tank 1. After the sliding pipe 10 is positioned, it is sealed to the water storage tank 1. The heat exchange pipe 2 is connected to the sliding pipe 10.

[0023] In the above embodiments, the waste flue gas is introduced into the heat exchange tube 2 from the inlet pipe 6. The connecting ring 7, the connecting plate 8, and the sealing ring 9 play a good sealing role, so that the waste flue gas will not enter the water storage tank 1 and the water inside the water storage tank 1 will be prevented from entering the heat exchange tube 2. Then the waste flue gas enters the sliding tube 10 through the heat exchange tube 2. The sliding tube 10 drives the heat exchange tube 2 to slide stably inside the water storage tank 1.

[0024] Specifically, it also includes a pressure plate 11, an outlet pipe 12, and an exhaust pipe 13. The pressure plate 11 is screwed to the right end of the sliding pipe 10, the outlet pipe 12 is connected to the pressure plate 11, and the exhaust pipe 13 is detachably connected to the outlet pipe 12 through a connector 18.

[0025] In the above embodiments, the waste flue gas enters the heat exchange tube 2 from the inlet pipe 6, and after heat exchange, it is introduced into the sliding tube 10. Then, it is discharged into the outlet pipe 12 through the pressure plate 11. Through the provided connector 18, the heat exchange device and the exhaust pipe 13 can be easily disassembled during the cleaning of impurities and dust, and the sliding operation of components such as the sliding tube 10 and the heat exchange tube 2 can be facilitated.

[0026] Specifically, it also includes multiple connecting pipe fittings 14, which connect the right sides of multiple heat exchange tubes 2.

[0027] In the above embodiments, multiple heat exchange tubes 2 are connected by connecting pipe fittings 14, so that the waste flue gas forms a backflow inside the heat exchange tubes 2, further increasing the residence time of the waste flue gas in the heat exchange tubes 2, thereby improving the heat exchange efficiency.

[0028] Specifically, it also includes multiple lead screws 15, multiple clamping parts 16, and multiple locking nuts 17. The multiple lead screws 15 are evenly connected to the right end of the water storage tank 1. The multiple clamping parts 16 correspond one-to-one with the lead screws 15. The clamping parts 16 are movably sleeved on the lead screws 15 and clamp the pressure plate 11. The multiple locking nuts 17 correspond one-to-one with the lead screws 15 and are screwed onto the lead screws 15.

[0029] In the above embodiments, the clamping member 16 is pressed onto the pressure plate 11, causing the sliding tube 10, pressure plate 11, heat exchange tube 2, connecting plate 8 and sealing ring 9 to be squeezed to the left as a whole, so that the connecting plate 8 and sealing ring 9 are tightly abutted in the mating ring 7, achieving a stable sealing connection.

[0030] Existing specifications can be used for the connector 18. The sliding tube 10 and the water storage tank 1 should be sealed, such as with a sealing gasket.

[0031] The working principle of this utility model is as follows: When installing this device, insert the entire assembly of connecting plate 8, sealing ring 9, heat exchange tube 2, sliding tube 10, pressure plate 11, and outlet tube 12 into the water storage tank 1, so that each support member 3 is inserted into the corresponding heat exchange tube 2, and the connecting plate 8 and sealing ring 9 abut against the inside of the docking ring 7. The pressure plate 11 is pressed by locking nut 17 and pressing member 16, so that the connecting plate 8 and sealing ring 9 are tightly abutted against the inside of the docking ring 7. The sliding tube 10 is sealed to the water storage tank 1. Then, the outlet tube 12 is connected to the external exhaust pipe 13 through the connector 18. Water is circulated inside the water storage tank 1, and the waste flue gas is introduced from the inlet pipe 6. The waste flue gas enters the star heat exchange tube 2 and forms a reflux through the connecting pipe 14 on the right side of the heat exchange tube 2, thereby improving the heat exchange efficiency.

[0032] When cleaning the inner wall of heat exchange tube 2, first drain the water medium inside the water tank 1, rotate the connector 18 to separate the outlet pipe 12 from the external exhaust pipe 13, loosen all locking nuts 17, remove the clamping parts 16 at each position, rotate the pressure plate 11 to remove it from the sliding tube 10, detachably connect the brush plate 4 to the end of the support rod 3 (screw connection is optional), screw the pressure plate 11 back into the sliding tube 10, pull the pressure plate 11 to make the sliding tube 10, heat exchange tube 2, connecting plate 8 and sealing ring 9 slide as a whole. During the sliding of heat exchange tube 2, the brush plate 4 scrapes and cleans the inner wall of heat exchange tube 2, scraping off the impurities and dust attached to the inner wall of heat exchange tube 2. The impurities and dust fall from the end of the connecting plate 8 into the ash discharge port 5. Open the ash discharge port 5 to discharge the impurities and dust, and then reinstall the heat exchange tube 2 components.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A waste heat recovery device that is easy to clean, characterized in that, include: The water storage tank (1) has openings at both ends; Multiple heat exchange tubes (2) are arranged in sequence, the heat exchange tubes (2) are arranged in a star shape, and the heat exchange tubes (2) are slidably connected to the water storage tank (1); Multiple support rods (3) correspond one-to-one with the heat exchange tube (2). The support rods (3) are inserted into the heat exchange tube (2) and are fixedly connected to the left end of the water storage tank (1). Multiple brush plates (4) correspond one-to-one with the support rod (3). The brush plates (4) are detachably connected to the right end of the support rod (3). The brush plates (4) are arranged in a star shape. When the heat exchange tube (2) slides in the water storage tank (1), the brush plates (4) scrape and clean the inner wall of the heat exchange tube (2). Ash discharge port (5) is located at the bottom of the water storage tank (1).

2. The waste heat recovery device that is easy to clean according to claim 1, characterized in that, Also includes: An air inlet pipe (6) is connected to the left end opening of the water storage tank (1); A docking ring (7) is connected to the left end opening of the water storage tank (1), and the docking ring (7) is located inside the water storage tank (1); A connecting plate (8) is connected to a sealing ring (9) on one side. The connecting plate (8) is sealed to the docking ring (7) through the sealing ring (9). The heat exchange tube (2) is connected to the connecting plate (8) and the air inlet pipe (6). The sliding tube (10) is slidably connected to the right end opening of the water storage tank (1). After the sliding tube (10) is positioned, it is sealed to the water storage tank (1). The heat exchange tube (2) is connected to the sliding tube (10).

3. The waste heat recovery device that is easy to clean according to claim 2, characterized in that, Also includes: The pressure plate (11) is screwed to the right end of the sliding tube (10); The outlet pipe (12) is connected to the pressure plate (11); The exhaust pipe (13) is detachably connected to the outlet pipe (12) via a connector (18).

4. The waste heat recovery device that is easy to clean according to claim 1, characterized in that, Also includes: Multiple connecting pipe fittings (14) connect the right sides of the multiple heat exchange tubes (2).

5. The waste heat recovery device that is easy to clean according to claim 3, characterized in that, Also includes: Multiple lead screws (15) are evenly connected to the right end of the water storage tank (1); Multiple clamping parts (16) correspond one-to-one with the lead screw (15). The clamping parts (16) are movably sleeved on the lead screw (15) and clamp the pressure plate (11). Multiple locking nuts (17) are corresponding one-to-one with the lead screw (15), and the locking nuts (17) are screwed onto the lead screw (15).

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