Flue gas waste heat recycling and reheating pipe

Abstract

The utility model discloses a flue gas waste heat recovery reheating pipe, which relates to the field of water heating equipment fittings, and comprises a pipeline, a heat exchange plate and an annular hollow pipe, one end of the pipe wall of the pipeline is fixedly connected with a water inlet, and the other end of the pipe wall of the pipeline is fixedly connected with a water outlet through a separation mechanism; a first annular rotating bin is fixedly connected to one end of the pipeline, a smoke inlet is fixedly connected to one end of the first annular rotating bin, a second annular connecting bin is fixedly connected to the other end of the pipeline, and smoke outlets are fixedly connected to the two ends of the surface of one side of the second annular connecting bin. According to the pipeline, the heat exchange plate and the annular hollow pipe provided by the utility model, scale on the heat exchange plate is cleaned on the basis that water and flue gas are uniformly contacted through the heat exchange plate, so that the problems that the contact area of the flue gas and cold water is relatively small, the contact is not uniform, and the scale covers in the pipeline after long-term use are solved; the heat exchange between the flue gas and the water is influenced.

Description

Technical Field

[0001] The utility model relates to the field of water heating equipment accessories, in particular to a flue gas waste heat recovery and reheating pipe. Background Art

[0002] The existing reheating pipe transports flue gas through an outer pipe and transports cold water through an inner pipe. The cold water exchanges heat with the flue gas through the pipe wall. During use, the contact area between the flue gas and the cold water is small, and since the flue gas flows out between the two ends of the pipe, it cannot contact the cold water evenly. In addition, during long-term use, a large amount of scale will form on the cold water pipe after heating, covering the inside of the pipe, affecting the heat exchange between the flue gas and the water. Therefore, it is necessary to solve the problem that the contact area between the flue gas and the cold water is small and uneven, and after long-term use, scale covers the inside of the pipe, affecting the heat exchange between the flue gas and the water. Utility Model Content

[0003] In view of the above-mentioned problems existing in the existing flue gas waste heat recovery and reheating pipe, the present utility model is proposed.

[0004] Therefore, the purpose of the utility model is to provide a flue gas waste heat recovery and reheating pipe to solve the problem that the contact area between flue gas and cold water is small and uneven, and scale is covered in the pipe after long-term use, affecting the heat exchange between flue gas and water.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat recovery and reheating pipe, comprising a pipe, a heat exchange plate and an annular hollow pipe, one end of the pipe wall of the pipe is fixedly connected to a water inlet, the other end of the pipe wall of the pipe is fixedly connected to a water outlet through a separation mechanism, one end of the pipe is fixedly connected to a first annular rotating bin, one end of the first annular rotating bin is fixedly connected to a smoke inlet, the other end of the pipe is fixedly connected to a second annular connecting bin, both ends of one side surface of the second annular connecting bin are fixedly connected to the smoke outlet, one end of the first annular rotating bin rotates and is inserted A rotating rod is connected, one end of the rotating rod passes through the second annular connecting bin and is fixedly connected to a driving mechanism, both ends of the rod wall of the rotating rod are fixedly connected to heat exchange plates, one end of the rod wall of the rotating rod has an opening and is fixedly connected to a first connecting pipe, the first connecting pipe is fixedly connected to one of the heat exchange plates, the other end of the rod wall of the rotating rod is fixedly connected to an annular hollow tube, one end of the annular hollow tube is fixedly connected to the heat exchange plate, the other end of the annular hollow tube is fixedly connected to a second connecting pipe, the second connecting pipe is fixedly connected to another heat exchange plate, and a plurality of U-shaped brush plates are fixedly connected to the tube wall in the pipeline cavity.

[0006] Preferably, the separation mechanism includes a threaded connection pipe, a fixed pipe, a rotating pipe, an L-shaped rod, a filter, a scraper and a collecting bucket, one end of the pipe wall of the pipe is opened and fixedly connected with the threaded connection pipe, the pipe wall of the threaded connection pipe is threadedly connected with the fixed pipe, one end of the fixed pipe is rotatably connected with the rotating pipe, the cavity of the rotating pipe is fixedly connected with the L-shaped rod, the cavity of the fixed pipe is fixedly connected with the filter, one end of the L-shaped rod passes through the filter and is fixedly connected with the scraper, one end of the side wall of the filter is opened and fixedly connected with the collecting bucket.

[0007] Preferably, the driving mechanism includes a U-shaped support seat and a motor, the other end of the pipeline is fixedly connected to the U-shaped support seat, the side wall of the U-shaped support seat is fixedly connected to the motor, and the main shaft of the motor is fixedly connected to the rotating rod.

[0008] Preferably, the heat exchange plate is a mesh plate formed by connecting a plurality of hollow tubes.

[0009] Furthermore, a sealing rubber ring is rotatably connected at the connection between the fixed tube and the rotating tube.

[0010] Preferably, an operating rod is fixedly connected to the tube wall of the rotating tube.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] 1. The utility model utilizes the smoke inlet to connect the smoke pipe and flow into the rotating rod cavity through the first annular rotating chamber, flows into one of the heat exchange plates through the first connecting pipe on the side wall of the rotating rod, flows into another heat exchange plate through the annular hollow pipe at one end of the heat exchange plate and the second connecting pipe, and finally is discharged from the second annular connecting chamber and the smoke outlet at the other end of the other heat exchange plate. The heat exchange plate formed by the intersection of multiple hollow tubes is utilized to facilitate the smoke to contact the water flow over a large area when flowing in the heat exchange plate cavity.

[0013] 2. The utility model utilizes a motor arranged on the side wall of the U-shaped support seat to drive the rotating rod to rotate, so that the heat exchange plates at both ends of the rotating rod are in uniform contact with water in the pipe cavity for heat exchange.

[0014] 3. The utility model utilizes a U-shaped brush plate arranged in the pipe cavity, so that the heat exchange plates at both ends come into contact with the U-shaped brush plate during rotation, and the scale on the side walls of the heat exchange plates at both ends is brushed. The brushed scale flows into the filter net in the fixed pipe cavity along with the water to separate the water and the scale. After separation, the water is discharged through the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a front structural sectional view of the utility model;

[0017] Figure 2 This is a front three-dimensional structural diagram of the utility model;

[0018] Figure 3 It is a three-dimensional structural diagram of the separation mechanism of the utility model.

[0019] Description of reference numerals:

[0020] 1. Pipeline; 2. Water inlet; 3. Water outlet; 4. First annular connecting chamber; 5. Smoke inlet; 6. Second annular connecting chamber; 7. Smoke outlet; 8. Rotating rod; 9. Heat exchange plate; 10. First connecting pipe; 11. Annular connecting pipe; 12. Second connecting pipe; 13. U-shaped brush plate; 14. Threaded connecting pipe; 15. Fixed pipe; 16. Rotating pipe; 17. L-shaped rod; 18. Filter; 19. Scraper; 20. Collecting bucket; 21. U-shaped support seat; 22. Motor; 23. Sealing rubber ring; 24. Operating lever. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] The utility model embodiment discloses a flue gas waste heat recovery and reheating pipe.

[0023] The utility model provides Figure 1-3The flue gas waste heat recovery and reheating pipe shown in the figure comprises a pipe 1, a heat exchange plate 9 and an annular hollow pipe 11, one end of the pipe wall of the pipe 1 is fixedly connected with a water inlet 2, the other end of the pipe wall of the pipe 1 is fixedly connected with a water outlet 3 through a separation mechanism, one end of the pipe 1 is fixedly connected with a first annular rotating bin 4, one end of the first annular rotating bin 4 is fixedly connected with a smoke inlet 5, the other end of the pipe 1 is fixedly connected with a second annular connecting bin 6, both ends of one side surface of the second annular connecting bin 6 are fixedly connected with a smoke outlet 7, the first annular rotating bin 4 is rotated and plugged with a rotating rod 8, one end of the rotating rod 8 passes through the second annular connecting chamber 6 and is fixedly connected to a driving mechanism, both ends of the rod wall of the rotating rod 8 are fixedly connected to heat exchange plates 9, one end of the rod wall of the rotating rod 8 has an opening and is fixedly connected to a first connecting pipe 10, the first connecting pipe 10 is fixedly connected to one of the heat exchange plates 9, the other end of the rod wall of the rotating rod 8 is fixedly connected to an annular hollow pipe 11, one end of the annular hollow pipe 11 is fixedly connected to the heat exchange plate 9, the other end of the annular hollow pipe 11 is fixedly connected to the second connecting pipe 12, the first connecting pipe 10 is fixedly connected to one of the heat exchange plates 9, and the second connecting pipe 12 is fixedly connected to the second connecting pipe 12. The second connecting pipe 12 is fixedly connected to the other heat exchange plate 9, and a plurality of U-shaped brush plates 13 are fixedly connected to the inner wall of the pipe 1. By using the heat exchange plates 9 fixedly connected at both ends of the rotating rod 8, the smoke enters through the smoke inlet 5, flows into the rotating rod 8 cavity through the first annular rotating chamber 4, flows into one of the heat exchange plates 9 through the first connecting pipe 10 on the side wall of the rotating rod 8, and then flows into the other heat exchange plate 9 through the annular hollow pipe 11 at one end of the heat exchange plate 9 and the second connecting pipe 12, and finally flows from the second annular connecting pipe 11 at the other end of the other heat exchange plate 9. The smoke is discharged from the bin 6 and the smoke outlet 7, and the driving mechanism is used to drive the heat exchange plate 9 to uniformly contact with water in the cavity of the pipe 1 for heat exchange. The U-shaped brush plate 13 arranged in the cavity of the pipe 1 is used so that the heat exchange plates 9 at both ends contact with the U-shaped brush plate 13 during the rotation process, and the scale on the side walls of the heat exchange plates 9 at both ends is brushed, and the brushed scale flows into the separation mechanism with the water for separation, thereby solving the problem that the contact area between the smoke and the cold water is small and uneven, and the scale is covered in the pipe after long-term use, which affects the heat exchange between the smoke and the water.

[0024] In order to separate the scale and water flow, such as Figure 1-3The separation mechanism includes a threaded connection pipe 14, a fixed pipe 15, a rotating pipe 16, an L-shaped rod 17, a filter screen 18, a scraper 19 and a collecting bucket 20. One end of the pipe wall of the pipeline 1 is provided with an opening and fixedly connected with the threaded connection pipe 14. The pipe wall of the threaded connection pipe 14 is threadedly connected with the fixed pipe 15. One end of the fixed pipe 15 is rotatably connected with the rotating pipe 16. The cavity of the rotating pipe 16 is fixedly connected with the L-shaped rod 17. The cavity of the fixed pipe 15 is fixedly connected with the filter screen 18. The L-shaped rod One end of 17 passes through the filter screen 18 and is fixedly connected with a scraper 19. One end of the side wall of the filter screen 18 is opened and is fixedly connected with a collecting bucket 20. The filter screen 18 arranged in the cavity of the fixed tube 15 is used to separate water and scale. The L-shaped rod 17 arranged in the cavity of the rotating tube 16 is used to drive the L-shaped rod 17 by rotating the rotating tube 16, so that the scraper 19 at one end of the L-shaped rod 17 rotates on the filter screen 18, thereby scraping the scale on the filter screen 18 into the cavity of the collecting bucket 20.

[0025] In order to drive the heat exchange plates 9 at both ends to rotate and contact the water evenly for heat exchange, Figure 1-3 As shown, the driving mechanism includes a U-shaped support seat 21 and a motor 22. The other end of the pipeline 1 is fixedly connected to the U-shaped support seat 21, and the side wall of the U-shaped support seat 21 is fixedly connected to the motor 22. The main shaft of the motor 22 is fixedly connected to the rotating rod 8. The motor 22 arranged on the side wall of the U-shaped support seat 21 is used to drive the heat exchange plates 9 at both ends to rotate and contact with water evenly for heat exchange.

[0026] In order to allow the flue gas to contact the water flow over a large area, Figure 1-3 As shown, the heat exchange plate 9 is a mesh plate formed by connecting a plurality of hollow tubes. By using the heat exchange plate 9 formed by connecting a plurality of hollow tubes, the flue gas can contact the water flow over a large area when flowing in the cavity of the heat exchange plate 9.

[0027] In order to increase the sealing between the fixed tube 15 and the rotating tube 16, as Figure 1-3 As shown, a sealing rubber ring 23 is rotatably connected at the connection between the fixed tube 15 and the rotating tube 16. The sealing rubber ring 23 provided at the connection between the fixed tube 15 and the rotating tube 16 increases the sealing performance between the fixed tube 15 and the rotating tube 16.

[0028] Finally, in order to facilitate manual rotation of the operating lever 24, as Figure 1-3 As shown, the tube wall of the rotating tube 16 is fixedly connected with an operating rod 24, and the operating rod 24 arranged on the tube wall of the rotating tube 16 is used to facilitate manual rotation of the operating rod 24 and avoid burns.

[0029] Working principle:

[0030] When in use, smoke is connected through the smoke inlet 5, and cold water is injected into the pipe 1 through the water inlet 2. Smoke enters through the smoke inlet 5, flows into the cavity of the rotating rod 8 through the first annular rotating chamber 4, flows into one of the heat exchange plates 9 through the first connecting pipe 10 on the side wall of the rotating rod 8, flows into another heat exchange plate 9 through the annular hollow pipe 11 at one end of the heat exchange plate 9 and the second connecting pipe 12, and finally is discharged from the second annular connecting chamber 6 and the smoke outlet 7 at the other end of the other heat exchange plate 9. The heat exchange plate 9 formed by the intersection of multiple hollow tubes is used to facilitate the flow of smoke in the cavity of the heat exchange plate 9. When the heat exchange plate 9 moves, it contacts the water flow over a large area. The driving mechanism is used to drive the heat exchange plate 9 to contact the water evenly in the cavity of the pipe 1 for heat exchange. The U-shaped brush plate 13 is used in the cavity of the pipe 1, so that the heat exchange plates 9 at both ends contact the U-shaped brush plate 13 during the rotation process, and the scale on the side walls of the heat exchange plates 9 at both ends is brushed. The brushed scale flows into the separation mechanism with the water for separation and then the water is discharged, thereby solving the problem that the contact area between the flue gas and the cold water is small and uneven, and the scale is covered in the pipe after long-term use, which affects the heat exchange between the flue gas and the water.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flue gas waste heat recovery and reheating pipe, comprising a pipe (1), a heat exchange plate (9) and an annular hollow pipe (11), characterized in that: One end of the pipe wall of the pipe (1) is fixedly connected to a water inlet (2), and the other end of the pipe wall of the pipe (1) is fixedly connected to a water outlet (3) via a separation mechanism; one end of the pipe (1) is fixedly connected to a first annular rotating chamber (4), one end of the first annular rotating chamber (4) is fixedly connected to a smoke inlet (5), and the other end of the pipe (1) is fixedly connected to a second annular connecting chamber (6), and both ends of one side surface of the second annular connecting chamber (6) are fixedly connected to smoke outlets (7); one end of the first annular rotating chamber (4) is rotatable and plugged with a rotating rod (8), and one end of the rotating rod (8) passes through the second annular connecting chamber (6) and is fixedly connected to a driving mechanism. The rotating rod (8) has a structure in which heat exchange plates (9) are fixedly connected at both ends of the rod wall, an opening is opened at one end of the rod wall of the rotating rod (8) and a first connecting pipe (10) is fixedly connected thereto, the first connecting pipe (10) is fixedly connected to one of the heat exchange plates (9), the other end of the rod wall of the rotating rod (8) is fixedly connected to an annular hollow pipe (11), one end of the annular hollow pipe (11) is fixedly connected to the heat exchange plate (9), the other end of the annular hollow pipe (11) is fixedly connected to a second connecting pipe (12), the second connecting pipe (12) is fixedly connected to another of the heat exchange plates (9), and a plurality of U-shaped brush plates (13) are fixedly connected to the inner wall of the pipe cavity of the pipeline (1).

2. The flue gas waste heat recovery and reheating tube according to claim 1, characterized in that: The separation mechanism comprises a threaded connection pipe (14), a fixed pipe (15), a rotating pipe (16), an L-shaped rod (17), a filter screen (18), a scraper (19) and a collecting bucket (20); one end of the pipe wall of the pipe (1) is fixedly connected to the threaded connection pipe (14) through an opening; the pipe wall of the threaded connection pipe (14) is threadedly connected to the fixed pipe (15); one end of the fixed pipe (15) is rotatably connected to the rotating pipe (16); the cavity of the rotating pipe (16) is fixedly connected to the L-shaped rod (17); the cavity of the fixed pipe (15) is fixedly connected to the filter screen (18); one end of the L-shaped rod (17) passes through the filter screen (18) and is fixedly connected to the scraper (19); one end of the side wall of the filter screen (18) is fixedly connected to the collecting bucket (20) through an opening.

3. The flue gas waste heat recovery and reheating tube according to claim 1, characterized in that: The driving mechanism comprises a U-shaped support seat (21) and a motor (22); the other end of the pipeline (1) is fixedly connected to the U-shaped support seat (21); the side wall of the U-shaped support seat (21) is fixedly connected to the motor (22); and the main shaft of the motor (22) is fixedly connected to the rotating rod (8).

4. The flue gas waste heat recovery and reheating tube according to claim 1, characterized in that: The heat exchange plate (9) is a mesh plate formed by connecting a plurality of hollow tubes.

5. The flue gas waste heat recovery and reheating tube according to claim 2, characterized in that: A sealing rubber ring (23) is rotatably connected at the connection between the fixed tube (15) and the rotating tube (16).

6. The flue gas waste heat recovery and reheating tube according to claim 2, characterized in that: An operating rod (24) is fixedly connected to the tube wall of the rotating tube (16).

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