Heat exchange structure of fluoroplastic steel air preheater

Abstract

The invention relates to the technical field of air preheaters, in particular to a heat exchange structure of a fluoroplastic steel air preheater, which comprises a mounting frame, a plurality of fluoroplastic steel heat exchange tubes are fixedly mounted on the inner wall of the mounting frame, two connecting cavities are formed in the mounting frame, and connecting holes are formed in the cavity walls of the connecting cavities in a penetrating manner. A discharge port used for discharging hot air flow is formed in the bottom end of the mounting frame in a penetrating mode, a fan mechanism used for extracting the hot air flow is arranged on the mounting frame, the multiple fluoroplastic steel heat exchange pipes are arranged in a staggered array mode, and a moving block is arranged between every two adjacent fluoroplastic steel heat exchange pipes; hot air flow is sucked into the mounting frame through the fan, the fluoroplastic steel heat exchange pipes in the staggered array shape can distribute and diffuse the hot air flow, the hot air flow can blow the moving blocks to clean the fluoroplastic steel heat exchange pipes, and the multiple fluoroplastic steel heat exchange pipes in the efficient heat exchange state are kept to exchange heat through the diffused hot air flow at the same time; and the overall heat exchange efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of air preheaters, in particular to a heat exchange structure of a fluoroplastic steel air preheater. Background Art

[0004] In a fluoroplastic steel air preheater with anti-corrosion and anti-blocking functions with application number: CN201521016384.2, only a few rows of fluoroplastic steel heat exchange tubes are separately arranged for heat exchange, and the overall flow of hot air flow is poor, and the front row of fluoroplastic steel heat exchange tubes are easy to block the subsequent hot air flow, resulting in poor heat exchange effect of the subsequent fluoroplastic steel heat exchange tubes, and the impurities brought by the subsequent hot air flow will cover the fluoroplastic steel heat exchange tubes, thereby affecting the overall heat exchange efficiency. Therefore, it is necessary to propose a heat exchange structure of a fluoroplastic steel air preheater. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a heat exchange structure of a fluoroplastic steel air preheater.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a heat exchange structure of a fluoroplastic steel air preheater, comprising a mounting frame, a plurality of fluoroplastic steel heat exchange tubes are fixedly mounted on the inner wall of the mounting frame, two connecting cavities are provided inside the mounting frame, connecting holes are provided through the walls of the connecting cavities, and a discharge port for discharging hot air flow is provided through the bottom end of the mounting frame: The installation frame is provided with a fan mechanism for extracting hot air flow, a plurality of the fluoroplastic steel heat exchange tubes are arranged in a staggered array, and a moving block is provided between adjacent fluoroplastic steel heat exchange tubes, the moving block is provided with a mounting groove, a push rod is slidably connected in the mounting groove, a telescopic rod is rotatably connected to the push rod via a rotating shaft, the rotating shaft is made of iron metal material, a mounting rod is rotatably connected to the notch of the mounting groove via a bearing, one end of the telescopic rod away from the rotating shaft is fixedly connected to the mounting rod, a baffle for blocking hot air flow is fixedly connected to the mounting rod, and a magnet for adsorbing the rotating shaft is fixedly connected to the bottom of the mounting groove.

[0007] Specifically, the fan mechanism includes a mounting frame, which is fixedly connected to the outer wall of the mounting frame. A drive motor is fixedly installed on the mounting frame. The output end of the drive motor is fixedly connected to a drive rod via a coupling. One end of the drive rod away from the drive motor extends into the mounting frame, and one end of the drive rod located in the mounting frame is fixedly connected to a fan blade.

[0008] Specifically, arc-shaped grooves are provided on the upper surface and the lower surface of the moving block, and the adjacent fluoroplastic steel heat exchange tubes are snap-fitted with the grooves of the moving block.

[0009] Specifically, the connecting hole is used to connect the connecting cavity to an external pipeline.

[0010] Specifically, the connecting cavity is connected to a plurality of fluoroplastic steel heat exchange tubes.

[0011] Specifically, two baffles are arranged on each of the moving blocks, one of which is arranged in an inclined shape, and the other is arranged in a vertical shape.

[0012] Specifically, both ends of the mounting rod extend outside the mounting groove.

[0013] Beneficial effects of the present invention: The heat exchange structure of the fluoroplastic steel air preheater described in the present invention, when in use, draws the hot air into the interior of the installation frame through a fan, and the staggered array of fluoroplastic steel heat exchange tubes will divert and diffuse the hot air flow, so that when the hot air flow flows, it will push the moving block to move through the inclined baffle, and the moving block will scrape impurities on the fluoroplastic steel heat exchange tube, and when it abuts against the inner wall of the installation frame, it pushes the baffle to change direction through the push rod, so that the moving block can move in the opposite direction, and perform reciprocating motion in subsequent movements to clean the fluoroplastic steel heat exchange tube, and the fluoroplastic steel heat exchange tube maintains the state to exchange heat with the diffused hot air flow, so that the overall heat exchange efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 A schematic front view of the heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 2 A schematic diagram of the back structure of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 3 A schematic diagram of the internal structure of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 4 A schematic diagram of the internal structure of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 5 A schematic diagram of a top view of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 6 A schematic diagram of the back structure of a moving block of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention; Figure 7 A schematic diagram of the internal structure of a moving block of a heat exchange structure of a fluoroplastic steel air preheater provided by the present invention.

[0016] In the figure: 1. Installation frame; 2. Fluoroplastic steel heat exchange tube; 3. Connection cavity; 4. Connection hole; 5. Discharge port; 6. Moving block; 7. Installation slot; 8. Push rod; 9. Telescopic rod; 10. Installation rod; 11. Baffle; 12. Magnet; 13. Installation frame; 14. Drive motor; 15. Drive rod; 16. Fan blade. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] like Figure 1-Figure 7 As shown, the present invention provides the following technical solutions: Embodiment 1: A heat exchange structure of a fluoroplastic steel air preheater, comprising a mounting frame 1, on the inner wall of which a plurality of fluoroplastic steel heat exchange tubes 2 are fixedly mounted, the interior of the mounting frame 1 is provided with two connecting cavities 3, the walls of the connecting cavities 3 are provided with connecting holes 4, and the bottom end of the mounting frame 1 is provided with a discharge port 5 for discharging hot air flow: When in use, the connecting hole 4 is connected to a plurality of fluoroplastic steel heat exchange tubes 2 through the connecting cavity 3, and air enters the fluoroplastic steel heat exchange tube 2 through the connecting hole 4 and the connecting cavity 3, and exchanges heat with the high-temperature flue gas in the furnace in the fluoroplastic steel heat exchange tube 2, and the high-temperature air after heat exchange and temperature increase is discharged through the connecting cavity 3 and the connecting hole 4.

[0019] Embodiment 2: The technical solution of this embodiment is different from that of embodiment 1 and includes: a fan mechanism for extracting hot air flow is provided on the installation frame 1, a plurality of fluoroplastic steel heat exchange tubes 2 are arranged in a staggered array, and a moving block 6 is provided between adjacent fluoroplastic steel heat exchange tubes 2, and a mounting groove 7 is provided on the moving block 6, a push rod 8 is slidably connected in the mounting groove 7, and a telescopic rod 9 is rotatably connected to the push rod 8 through a rotating shaft, the rotating shaft is made of iron metal material, and a mounting rod 10 is rotatably connected to the notch of the mounting groove 7 through a bearing, and the end of the telescopic rod 9 away from the rotating shaft is fixedly connected to the mounting rod 10, and a baffle 11 for blocking hot air flow is fixedly connected to the mounting rod 10, and a magnet 12 for adsorbing the rotating shaft is fixedly connected to the bottom of the mounting groove 7, and the magnet 12 and the rotating shaft on the push rod 8 are mutually adsorbed, so that the push rod 8 will not move at will, thereby fixing the angle of the baffle 11; When in use, the fan mechanism is used to extract air, so that the high-temperature flue gas in the furnace is drawn into the installation frame 1, and the fluoroplastic steel heat exchange tubes 2 arranged in a staggered array will divert the high-temperature flue gas, so that the high-temperature flue gas is diffused into the entire installation frame 1 by rows of fluoroplastic steel heat exchange tubes 2, and heat exchange operations are performed through multiple fluoroplastic steel heat exchange tubes 2. At the same time, the flowing high-temperature flue gas will blow on the inclined baffle 11, thereby pushing the moving block 6 to move, and the moving block 6 will clean the high-temperature flue gas blowing surface of the fluoroplastic steel heat exchange tube 2, thereby scraping off the smoke dust left by the high-temperature flue gas blowing, and the continuous movement of the moving block 6 will drive the push rod 8 moves synchronously, and the pushing rod 8 will first abut against the inner wall of the installation frame 1, and the moving block 6 continues to move and pushes the pushing rod 8 to move in the installation slot 7, and the pushing rod 8 will drive the telescopic rod 9 to move synchronously when moving, and the telescopic rod 9 will drive the baffle 11 to rotate through the installation rod 10, and the angles of the two baffles 11 change, and when the hot air flow blows the baffle 11 after the angle change, it will push the moving block 6 to move to the other side of the installation frame 1, and the moving block 6 repeats the above movement to reciprocately clean the fluoroplastic steel heat exchange tube 2, so that the high-temperature flue gas blowing surface of the fluoroplastic steel heat exchange tube 2 will not condense smoke and affect the heat exchange efficiency.

[0020] Embodiment 3: The technical solution that distinguishes this embodiment from Embodiment 2 includes: wherein, the fan mechanism includes a mounting frame 13, the mounting frame 13 is fixedly connected to the outer wall of the mounting frame 1, a driving motor 14 is fixedly installed on the mounting frame 13, the output end of the driving motor 14 is fixedly connected to a driving rod 15 through a coupling, the end of the driving rod 15 away from the driving motor 14 extends into the mounting frame 1, and the end of the driving rod 15 located in the mounting frame 1 is fixedly connected to a fan blade 16, the driving motor 14 drives the driving rod 15 to rotate, and the driving rod 15 drives the fan blade 16 to rotate, and when the fan blade 16 rotates, the high-temperature flue gas in the furnace is drawn into the mounting frame 1, and the high-temperature flue gas in the furnace after the heat exchange is completed will be discharged through the exhaust port 5, and at the same time, the scraped smoke and dust impurities will fall to the bottom of the mounting frame 1, and then be driven by the flowing hot air flow to move toward the exhaust port 5 until they are discharged.

[0021] Among them, arc-shaped grooves are opened on the upper and lower surfaces of the moving block 6, and the adjacent fluoroplastic steel heat exchange tubes 2 are snap-fitted with the grooves of the moving block 6, so that the moving block 6 can avoid being in contact with the fluoroplastic steel heat exchange tubes 2 and can be cleaned during movement.

[0022] Among them, the connecting hole 4 is used to connect the connecting cavity 3 with the external pipeline, and the connecting cavity 3 is connected with a plurality of fluoroplastic steel heat exchange tubes 2. The air to be heat exchanged is input into the fluoroplastic steel heat exchange tube 2 from the connecting hole 4 and the connecting cavity 3 on one side to realize the heat exchange with the high-temperature flue gas, and then output from the connecting cavity 3 and the connecting hole 4 on the other side after the heat exchange is completed.

[0023] Among them, two baffles 11 are arranged on each moving block 6, one baffle 11 is arranged in an inclined shape, and the other baffle 11 is arranged in a vertical shape. When the hot air flow blows on the inclined baffle 11, the vertical baffle 11 will not contact with the hot air flow and affect the movement of the moving block 6.

[0024] Among them, both ends of the mounting rod 10 extend outside the mounting groove 7. When the moving block 6 moves to the extreme position, the mounting rod 10 will first abut against the inner wall of the mounting frame 1, thereby supporting the moving block 6 and the baffle 11, leaving a certain space to facilitate the flow of hot air flow, so that the moving block 6 abuts against the inner wall of the mounting frame 1 and affects the blowing of the hot air flow on the baffle 11.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A heat exchange structure of a fluoroplastic steel air preheater, comprising a mounting frame (1), a plurality of fluoroplastic steel heat exchange tubes (2) being fixedly mounted on the inner wall of the mounting frame (1), two connecting cavities (3) being provided inside the mounting frame (1), connecting holes (4) being provided through the walls of the connecting cavities (3), and a discharge port (5) for discharging hot air flow being provided through the bottom end of the mounting frame (1): It is characterized in that The installation frame (1) is provided with a fan mechanism for extracting hot air flow. A plurality of the fluoroplastic steel heat exchange tubes (2) are arranged in a staggered array, and a moving block (6) is arranged between adjacent fluoroplastic steel heat exchange tubes (2). The moving block (6) is provided with a mounting groove (7). A push rod (8) is slidably connected in the mounting groove (7). A telescopic rod (9) is rotatably connected to the push rod (8) via a rotating shaft. The rotating shaft is made of iron metal material. A mounting rod (10) is rotatably connected to the notch of the mounting groove (7) via a bearing. One end of the telescopic rod (9) away from the rotating shaft is fixedly connected to the mounting rod (10). A baffle (11) for blocking hot air flow is fixedly connected to the mounting rod (10). A magnet (12) for adsorbing the rotating shaft is fixedly connected to the bottom of the mounting groove (7).

2. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1 is characterized in that: The fan mechanism comprises a mounting frame (13), the mounting frame (13) being fixedly connected to an outer wall of the mounting frame (1), a driving motor (14) being fixedly mounted on the mounting frame (13), an output end of the driving motor (14) being fixedly connected to a driving rod (15) via a coupling, an end of the driving rod (15) away from the driving motor (14) extending into the mounting frame (1), and an end of the driving rod (15) located in the mounting frame (1) being fixedly connected to a fan blade (16).

3. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1 is characterized in that: The upper surface and the lower surface of the moving block (6) are both provided with arc-shaped grooves, and the adjacent fluoroplastic steel heat exchange tubes (2) are snap-fitted into the grooves of the moving block (6).

4. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1 is characterized in that: The connecting hole (4) is used to connect the connecting cavity (3) to an external pipeline.

5. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1, characterized in that: The connecting cavity (3) is connected to a plurality of fluoroplastic steel heat exchange tubes (2).

6. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1, characterized in that: Two baffles (11) are arranged on each of the moving blocks (6), one of the baffles (11) is arranged in an inclined shape, and the other baffle (11) is arranged in a vertical shape.

7. The heat exchange structure of a fluoroplastic steel air preheater according to claim 1, characterized in that: Both ends of the mounting rod (10) extend outside the mounting groove (7).

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