Fin heat exchanger convenient for cleaning

Abstract

The application discloses a fin heat exchanger convenient for cleaning, one side edge end of the heat exchanger body is fixedly connected with a water inlet pressure bearing pipe for reducing water inlet pressure, the other side edge end of the heat exchanger body is fixedly connected with a water outlet pressure bearing pipe for reducing water outlet pressure, the water inlet pressure bearing pipe is fixedly installed with a water inlet pressure bearing flange for bearing water inlet pressure at the side edge end close to the heat exchanger body, the water outlet pressure bearing pipe is fixedly installed with a water outlet pressure bearing flange for bearing water outlet pressure at the side edge end close to the heat exchanger body, and the water inlet pressure bearing pipe and the water outlet pressure bearing pipe are both provided with semicircular pipes; the water inlet pressure bearing pipe and the water outlet pressure bearing pipe are arranged at both ends of the heat exchanger body respectively, so that the heat exchanger body can reduce the water inlet pressure and the water outlet pressure to the greatest extent during water inlet and water outlet, the heat exchange effect of the heat exchanger body is guaranteed, and the heat transfer effect is strengthened.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, in particular to a fin heat exchanger which is convenient for cleaning. Background Art

[0002] Fin heat exchanger is one of the earliest and most successful discoveries in the process of improving tubular heat exchanger. This method is still the most widely used method of enhancing heat transfer of all kinds of tubular heat exchange surface. It is widely used in power, chemical industry, petrochemical industry, air conditioning engineering and refrigeration engineering. The basic heat transfer element of fin heat exchanger is finned tube, which is composed of base tube and fin. The base tube is usually round tube, but there are also elliptical tube and flat tube. The surface structure of fin includes flat fin, discontinuous fin, corrugated fin and perforated fin.

[0003] However, the current inlet and outlet water pipes of the fin heat exchanger generally use pipes directly, and the water supply and drainage are directly carried out through the pipes, resulting in the fin heat exchanger being unable to withstand high pressure during actual application. At the same time, the water supply and drainage are processed through several pipes, which makes it easy for the inlet and outlet pipes of the fin heat exchanger to be difficult to clean when they are blocked or dirt accumulates. Summary of the Invention

[0004] The present invention provides a fin heat exchanger that is easy to clean, which can effectively solve the problem raised in the above background technology. However, the current inlet and outlet water pipes of the fin heat exchanger generally use pipes directly, and the water supply and drainage are directly carried out through the pipes, resulting in the fin heat exchanger being unable to withstand high pressure during actual application. At the same time, the water supply and drainage are processed through several pipes, which makes it easy for the inlet and outlet pipes of the fin heat exchanger to be unable to be cleaned when they are blocked and dirt accumulates.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fin heat exchanger that is easy to clean, comprising a heat exchanger body, wherein a water inlet pressure-bearing pipe for reducing water inlet pressure is fixedly connected to one side end of the heat exchanger body, and a water outlet pressure-bearing pipe for reducing water outlet pressure is fixedly connected to the other side end of the heat exchanger body at a position corresponding to the water inlet pressure-bearing pipe, wherein the bottom end of the water inlet pressure-bearing pipe is vertically fixedly connected to an inlet pipe for water intake, and the top end of the water outlet pressure-bearing pipe is vertically fixedly connected to an outlet pipe for water discharge;

[0006] One side end of the water inlet pressure-bearing pipe is fixedly installed with a water inlet pressure-bearing flange that withstands the water inlet pressure near the heat exchanger body, and one side end of the water outlet pressure-bearing pipe is fixedly installed with a water outlet pressure-bearing flange that withstands the water outlet pressure near the heat exchanger body. The heat exchanger body is fixedly connected to the water inlet pressure-bearing pipe and the water outlet pressure-bearing pipe respectively through the water inlet pressure-bearing flange and the water outlet pressure-bearing flange on its two side ends, and the water inlet pressure-bearing pipe and the water outlet pressure-bearing pipe are both provided with semicircular pipes;

[0007] The heat exchanger body is uniformly provided with finned tubes for heat exchange.

[0008] Preferably, the water inlet pressure flange and the water outlet pressure flange are detachably connected to the heat exchanger body by flange screws, and the inner side edges of the water inlet pressure flange and the water outlet pressure flange are provided with sealing rubber strips at the connection positions with the heat exchanger body.

[0009] Preferably, the water inlet pressure flange and the water outlet pressure flange are provided with water inlet holes and water outlet holes at the positions corresponding to the finned tubes, and the water inlet holes and the water outlet holes are communicated with the finned tubes.

[0010] Preferably, the inner side bottom and top positions of the water inlet pressure pipe are fixedly connected with limit sliding blocks provided with sliding grooves, one side edge of each limit sliding block is fixedly provided with a first electromagnet, and the other side edge of the limit sliding block is fixedly provided with a second electromagnet at the position corresponding to the first electromagnet, and the sliding groove of the limit sliding block is slidably connected with an attracting iron block.

[0011] The middle part of the attracting iron block is rotatably connected with a driving shaft, the outer side edge of the driving shaft is fixedly connected with a pressure relief paste for pressure relief near the water inlet of the water inlet pipe, and the both side edges of the driving shaft are fixedly connected with linkage rotating rods at equal distances at the positions inside the water inlet pressure pipe, and the end of each linkage rotating rod is fixedly bonded with a rubber cleaning piece.

[0012] Preferably, the middle part of the attracting iron block is movably connected with a shaft seat, and the driving shaft is rotatably connected with the attracting iron block through the shaft seat.

[0013] Preferably, when the attracting iron block slides to the edge close to the first electromagnet in the sliding groove of the limit sliding block, the rubber cleaning piece at the end of the linkage rotating rod contacts the edge of the water inlet pressure pipe away from the water inlet pressure flange.

[0014] When the attracting iron block slides to the edge close to the second electromagnet in the sliding groove of the limit sliding block, the rubber cleaning piece at the end of the linkage rotating rod contacts the edge of the water inlet pressure flange.

[0015] Preferably, the first electromagnet and the second electromagnet are symmetrically installed with the limit sliding block as the center, the input ends of the first electromagnet and the second electromagnet are electrically connected with the output end of an external control power supply, and the attracting iron block inside the water inlet pressure pipe at the top position is internally provided with a locking bolt through screw connection.

[0016] Preferably, the locking bolt penetrates through the water inlet pressure pipe, and the locking bolt is connected with the attracting iron block through screw locking after penetrating through the water inlet pressure pipe, and the connection position of the locking bolt and the water inlet pressure pipe is provided with a tight gasket.

[0017] Preferably, movable support frames are fixedly installed at the inner bottom and top positions of the water outlet pressure pipe, and movable rods are movably connected to the inner sides of the two movable support frames. Resistance blades for reducing the water outlet pressure are fixedly connected to the two side edges of the movable rods at the corresponding positions of the fin tubes.

[0018] Preferably, a movable connecting seat is fixedly installed inside the movable support frame, the movable rod is movably connected to the movable support frame through the movable connecting seat, and the position of the resistance blade corresponds to the position of the drain outlet of the fin tube.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the water inlet pressure-bearing pipe and the internal tube cavity, the water entering the heat exchanger body can be first stored in the form of a water storage chamber during the water inlet process. Then, the water accumulated in the water inlet pressure-bearing pipe can be gradually diverted to the various fin tubes in the heat exchanger body through the water inlet pressure-bearing flange. In this way, the pressure caused by water on the heat exchanger body and fin tubes during water inlet can be reduced, and at the same time, the water can be stably diverted to the various fin tubes in the heat exchanger body, thereby achieving better heat exchange.

[0021] 2. The water discharged from the heat exchanger body can be accumulated through the outlet pressure-bearing pipe. At the same time, before the outlet pressure-bearing pipe accumulates the discharged water, the outlet pressure-bearing flange can guide the water discharged from each fin tube in the heat exchanger into the outlet pressure-bearing pipe in a dispersed form. In this way, the water can be decompressed when entering the outlet pressure-bearing pipe. At the same time, the outlet pressure-bearing pipe can be used to accumulate the water for a second time, thereby reducing the pressure of the water finally discharged from the outlet pipe, thereby achieving better pressure reduction;

[0022] Through the above, the water inlet pressure pipe, the water outlet pressure pipe, the water inlet pressure flange and the water outlet pressure flange are respectively arranged at both ends of the heat exchanger body so that the water inlet and outlet pressure of the heat exchanger body can be reduced to the greatest extent during the water inlet and water discharge process, thereby ensuring the heat exchange effect of the heat exchanger body and thus enhancing its heat transfer effect.

[0023] 3. The limit slider, the first electromagnet and the second electromagnet are used to drive the attraction iron block to slide in the limit slider in a strong magnetic attraction manner, so that the attraction iron block can drive the driving shaft, pressure relief slurry, linkage rotating rod and rubber cleaning sheet connected thereto to move to both sides of the water inlet pressure pipe. When the water inlet pipe applies the pressure of the water flow to the pressure relief slurry, it drives the pressure relief slurry to rotate, and the pressure relief slurry drives the driving shaft, linkage rotating rod and rubber cleaning sheet to rotate synchronously, so that the rubber cleaning sheet on the outside of the driving shaft can quickly clean the edges of the water inlet pressure pipe and the edges of the water inlet pressure flange, so that when blockage and accumulation of dirt occur inside the water inlet pressure pipe, it can be cleaned in time, reducing the difficulty of manual cleaning.

[0024] 4. The locking bolt is used to lock and limit the position of the attraction iron block inside the limit slider, so that during the normal water inlet process of the water inlet pressure pipe, the attraction iron block can be located in the middle of the limit slider, so that the rubber cleaning sheets on both sides of the linkage rotating rod do not contact the edges of the water inlet pressure pipe and the water inlet pressure flange, so that the rubber cleaning sheets will not clean the edges of the water inlet pressure pipe and the water inlet pressure flange, and at the same time, the pressure relief slurry on the outside of the driving shaft can rotate under the impact of the water inlet pressure, so that the pressure of the water inlet in the water inlet pressure pipe can be reduced to the greatest extent by mechanical decompression, so that the water inlet in the water inlet pressure pipe can be reduced and buffered when cleaning is not required, so that water can stably enter the heat exchanger body.

[0025] 5. Through the movable support frame, movable rod and resistance blades, when the water in the heat exchanger body enters the water outlet pressure pipe through the water outlet flange, the water can be discharged through the fin tube. At the same time, in the process of the fin tube discharging water into the water outlet pressure pipe, the impact force of the fin tube when draining water drives the resistance blade on the outside of the movable rod to rotate, so that the water outlet pressure of the fin tube when draining water is reduced by the rotation of the resistance blade, and then the heat exchanger body can better reduce the water outlet pressure of the water outlet pipe through the cooperation of the resistance blade and the water outlet pressure pipe during the drainage process.

[0026] To sum up, during the water intake process, the present invention can drive the driving shaft, the linkage rotating rod and the rubber cleaning piece to rotate through the pressure relief slurry during the water intake process of the water inlet pipe through the impact of the water flow in the water inlet pipe, thereby reducing the pressure of the incoming water flow through energy transfer, so that the water can stably enter the water inlet pressure pipe, realizing the first-level pressure reduction treatment. At the same time, the combination of the water inlet pressure pipe and the water inlet pressure flange can further reduce the pressure of the incoming water, realizing the second-level pressure reduction treatment. Therefore, through two pressure reduction treatments, the water can stably enter the heat exchanger body, so that the heat exchanger body can achieve better heat exchange work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0028] In the attached figure:

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 is a top view of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the finned tube of the present invention;

[0032] Figure 4 This is a schematic diagram of the installation structure of the pressure relief slurry of the present invention;

[0033] Figure 5 Schematic diagram of the installation structure of the resistance blade of the present invention;

[0034] Numbers in the figure: 1. Heat exchanger body; 2. Water inlet pressure pipe; 3. Water outlet pressure pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Water inlet pressure flange; 7. Water outlet pressure flange; 8. Fin tube; 9. Limit slider; 10. First electromagnet; 11. Second electromagnet; 12. Attracting iron block; 13. Driving shaft; 14. Pressure relief slurry; 15. Linkage rotating rod; 16. Rubber cleaning sheet; 17. Locking bolt; 18. Movable support frame; 19. Movable rod; 20. Resistance blade. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] Example: Figures 1-3 As shown, the present invention provides a technical solution, a fin heat exchanger that is easy to clean, including a heat exchanger body 1, a water inlet pressure-bearing pipe 2 for reducing the water inlet pressure is fixedly connected to one side end of the heat exchanger body 1, a water outlet pressure-bearing pipe 3 for reducing the water outlet pressure is fixedly connected to the other side end of the heat exchanger body 1 corresponding to the water inlet pressure-bearing pipe 2, the bottom end of the water inlet pressure-bearing pipe 2 is vertically fixedly connected to an inlet pipe 4 for water intake, and the top end of the water outlet pressure-bearing pipe 3 is vertically fixedly connected to an outlet pipe 5 for drainage;

[0037] One side end of the water inlet pressure-bearing pipe 2 is fixedly installed with a water inlet pressure-bearing flange 6 that withstands the water inlet pressure near the heat exchanger body 1, and one side end of the water outlet pressure-bearing pipe 3 is fixedly installed with a water outlet pressure-bearing flange 7 that withstands the water outlet pressure near the heat exchanger body 1. The water inlet pressure-bearing flange 6 and the water outlet pressure-bearing flange 7 are detachably connected to the heat exchanger body 1 through flange screws, and sealing strips are provided at the connections between the inner sides of the water inlet pressure-bearing flange 6 and the water outlet pressure-bearing flange 7 and the heat exchanger body 1, which facilitates the connection and fixation between the heat exchanger body 1 and the water inlet pressure-bearing flange 6 and the water outlet pressure-bearing flange 7, while ensuring a higher sealing after the connection. The heat exchanger body 1 is fixedly connected to the water inlet pressure-bearing pipe 2 and the water outlet pressure-bearing pipe 3 through the water inlet pressure-bearing flange 6 and the water outlet pressure-bearing flange 7 on both side ends thereof, and the water inlet pressure-bearing pipe 2 and the water outlet pressure-bearing pipe 3 are both provided with semicircular pipes;

[0038] Fin tubes 8 for heat exchange are evenly installed inside the heat exchanger body 1. Water inlet holes and water outlet holes are opened at positions corresponding to the fin tubes 8 inside the water inlet pressure flange 6 and the water outlet pressure flange 7, and the water inlet holes and the water outlet holes are communicated with the fin tubes 8, so that the water inlet and water outlet of the heat exchanger body 1 can be buffered and pressurized through the water inlet pressure flange 6 and the water outlet pressure flange 7.

[0039] like Figure 4 As shown, a limit slider 9 with a chute provided inside is fixedly connected to the bottom and top positions of the inner side of the water inlet pressure-bearing pipe 2. A first electromagnet 10 is fixedly installed on one side end of the limit slider 9, and a second electromagnet 11 is fixedly installed at the other side end of the limit slider 9 at a position corresponding to the first electromagnet 10. An attracting iron block 12 is slidably connected to the inside of the chute in the limit slider 9.

[0040] A driving shaft 13 is embedded in the middle of the attraction iron block 12 and is rotatably connected. A shaft seat is movably connected to the inner middle part of the attraction iron block 12. The driving shaft 13 is rotatably connected to the attraction iron block 12 through the shaft seat, which facilitates the connection and movement between the driving shaft 13 and the attraction iron block 12. The outer edge of the driving shaft 13 is fixedly connected to the water inlet of the water inlet pipe 4 for buffering the pressure relief slurry 14, and the two side ends of the driving shaft 13 are located at the inner position of the water inlet pressure pipe 2 and are equidistantly fixed with a synchronously rotating linkage rod 15, and the end of the linkage rod 15 is fixedly bonded with a rubber cleaning sheet 16.

[0041] When the attracting iron block 12 slides in the chute of the limiting slider 9 to the edge close to the first electromagnet 10, the rubber cleaning piece 16 at the end of the linkage rotating rod 15 contacts the edge of the inner side of the water inlet pressure pipe 2 away from the water inlet pressure flange 6, facilitating the movement of the attracting iron block 12 so that the rubber cleaning piece 16 can clean the edge of the water inlet pressure pipe 2;

[0042] When the attraction iron block 12 slides in the slide groove of the limit slider 9 to the edge close to the second electromagnet 11, the rubber cleaning sheet 16 at the end of the linkage rotating rod 15 contacts the edge of the water inlet pressure flange 6, making it convenient to clean the water inlet pressure flange 6 by moving the attraction iron block 12.

[0043] The first electromagnet 10 and the second electromagnet 11 are symmetrically installed with the limit slider 9 as the center, and the input ends of the first electromagnet 10 and the second electromagnet 11 are electrically connected to the output end of the external control power supply, which is convenient for the installation of the first electromagnet 10 and the second electromagnet 11, and at the same time convenient for the power on and off processing of the first electromagnet 10 and the second electromagnet 11. The inside of the attraction iron block 12 located at the top position of the inner side of the water inlet pressure pipe 2 is connected with a locking bolt 17 through a thread. The locking bolt 17 passes through the water inlet pressure pipe 2, and the locking bolt 17 is connected to the attraction iron block 12 through a threaded locking. A tight gasket is provided at the connection between the locking bolt 17 and the water inlet pressure pipe 2, which is convenient for fixing the position of the attraction iron block 12 at the top position of the water inlet pressure pipe 2 by the locking bolt 17, and at the same time ensures that the locking bolt 17 has a higher connection sealing when connecting and fixing the attraction iron block 12.

[0044] like Figure 5 As shown, movable support frames 18 are fixedly installed at the bottom and top positions of the inner side of the water outlet pressure pipe 3, and movable rods 19 are movably connected to the inner sides of the two movable support frames 18. Resistance blades 20 for reducing the water outlet pressure are fixedly connected at the two side edges of the movable rods 19 and the corresponding positions of the fin tubes 8. A movable connecting seat is fixedly installed inside the movable support frame 18, and the movable rod 19 is movably connected to the movable support frame 18 through the movable connecting seat. The position of the resistance blade 20 corresponds to the position of the drain outlet of the fin tube 8, which facilitates the connection and movement between the movable rod 19 and the movable support frame 18, and at the same time facilitates the buffering and decompression of the water discharged from the fin tube 8.

[0045] Working principle and use process of the present invention: In actual application of the fin heat exchanger with convenient cleaning, first, the water inlet pipe 4 and the water outlet pipe 5 of the heat exchanger body 1 are connected to the external pipe respectively. During operation, the water from the external pipe is transported into the heat exchanger body 1 through the water inlet pipe 4. During the water transport process of the water inlet pipe 4, the pressure relief slurry 14 at the bottom of the water inlet pressure pipe 2 can make initial contact with the water. At this time, the pressure of the incoming water impacts the pressure relief slurry 14, thereby driving the pressure relief slurry 14 to rotate. After the pressure relief slurry 14 rotates, it drives the driving shaft 13, the linkage rotating rod 15 and the rubber cleaning sheet 16 connected thereto to rotate synchronously, thereby achieving a preliminary reduction in the water inlet pressure.

[0046] After the water enters the water inlet pressure-bearing pipe 2, the water is initially accumulated in the water inlet pressure-bearing pipe 2. At the same time, the accumulated water is further diverted to the various fin tubes 8 in the heat exchanger body 1 in a diversion manner in combination with the water inlet pressure-bearing flange 6. In this way, the water is subjected to a secondary decompression treatment by the accumulation and diversion methods, so that the water can stably enter the heat exchanger body 1.

[0047] During the drainage process after heat exchange, the heat exchanger body 1 transports water to the outlet pressure-bearing pipe 3 through the finned tube 8. When the finned tube 8 transports water to the outlet pressure-bearing pipe 3, the outlet pressure-bearing flange 7 can evenly divert the water to the outlet pressure-bearing pipe 3, thereby reducing the outlet pressure in a dispersed manner. When the water is drained through the finned tube 8, the impact force of the finned tube 8 during drainage drives the resistance blade 20 and the movable rod 19 to rotate, thereby achieving a secondary decompression treatment of the water in the outlet pressure-bearing pipe 3 through the resistance blade 20 and the movable rod 19, thereby making the water after subsequent heat exchange more stable when passing through the outlet pipe 5.

[0048] Finally, after the heat exchanger body 1 is working, when it is necessary to clean the water inlet pressure-bearing pipe 2 and the water inlet pressure-bearing flange 6, the locking bolt 17 is loosened to release the restriction on the attraction iron block 12, and the screw hole of the locking bolt 17 is blocked by the rubber plug. After the position restriction of the attraction iron block 12 is released, the first electromagnet 10 is started, and the magnetic force of the first electromagnet 10 is used to attract the attraction iron block 12 to slide in the limit slider 9, and the attraction iron block 12 slides to the end of the limit slider 9. At this time, the rubber cleaning piece 16 at the end of the linkage rotating rod 15 contacts the edge of the water inlet pressure-bearing pipe 2, and then water is supplied through the water inlet pipe 4. The pressure relief slurry 14 is driven to rotate by the water flow, and the linkage rotating rod 15 and the rubber cleaning piece 16 are driven to rotate by the driving shaft 13, so that the rubber cleaning piece 16 can clean the edge of the water inlet pressure-bearing pipe 2;

[0049] When it is necessary to clean the water inlet pressure flange 6 at the edge of the water inlet pressure pipe 2, it is only necessary to turn off the first electromagnet 10 and then start the second electromagnet 11. The second electromagnet 11 drives the attraction iron block 12 to move toward the limit slider 9 close to the water inlet pressure flange 6, and when the attraction iron block 12 moves to the end of the limit slider 9, the rubber cleaning piece 16 contacts the edge of the water inlet pressure flange 6, thereby driving the rubber cleaning piece 16 to rotate through the above-mentioned driving method, and cleaning the edge of the water inlet pressure flange 6 through the rotation of the rubber cleaning piece 16. The water inlet pressure pipe 2 and the water inlet pressure flange 6 are cleaned by the above cleaning method, which reduces the labor intensity of manual cleaning and ensures the cleaning effect.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fin heat exchanger that is easy to clean, comprising a heat exchanger body (1), characterized in that: One side end of the heat exchanger body (1) is fixedly connected to a water inlet pressure-bearing pipe (2) for reducing the water inlet pressure, and the other side end of the heat exchanger body (1) is fixedly connected to a water outlet pressure-bearing pipe (3) for reducing the water outlet pressure at a position corresponding to the water inlet pressure-bearing pipe (2). The bottom end of the water inlet pressure-bearing pipe (2) is vertically fixedly connected to a water inlet pipe (4) for water inlet, and the top end of the water outlet pressure-bearing pipe (3) is vertically fixedly connected to a water outlet pipe (5) for water discharge; A water inlet pressure-bearing flange (6) for bearing the water inlet pressure is fixedly installed at one side end of the water inlet pressure-bearing pipe (2) near the heat exchanger body (1), and a water outlet pressure-bearing flange (7) for bearing the water outlet pressure is fixedly installed at one side end of the water outlet pressure-bearing pipe (3) near the heat exchanger body (1). The heat exchanger body (1) is fixedly connected to the water inlet pressure-bearing pipe (2) and the water outlet pressure-bearing pipe (3) through the water inlet pressure-bearing flange (6) and the water outlet pressure-bearing flange (7) at its two side ends, respectively. Both the water inlet pressure-bearing pipe (2) and the water outlet pressure-bearing pipe (3) are provided with semicircular pipes. Fin tubes (8) for heat exchange are evenly installed inside the heat exchanger body (1); A limiting slider (9) with a sliding groove inside is fixedly connected at the bottom and top positions of the inner side of the water inlet pressure-bearing pipe (2); a first electromagnet (10) is fixedly installed on one side end of the limiting slider (9), and a second electromagnet (11) is fixedly installed at a position corresponding to the first electromagnet (10) on the other side end of the limiting slider (9); an attracting iron block (12) is slidably connected inside the sliding groove in the limiting slider (9); A driving shaft (13) is embedded in the middle of the attracting iron block (12) and is rotatably connected thereto. A pressure relief paddle (14) for buffering and releasing pressure is fixedly connected to the outer side end of the driving shaft (13) near the water inlet of the water inlet pipe (4). Both side ends of the driving shaft (13) are equidistantly fixedly connected to synchronously rotating linkage rods (15) at positions inside the water inlet pressure-bearing pipe (2). A rubber cleaning sheet (16) is fixedly bonded to the end of the linkage rod (15).

2. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: The water inlet pressure-bearing flange (6) and the water outlet pressure-bearing flange (7) are detachably connected to the heat exchanger body (1) via flange screws, and sealing strips are provided at the connection points between the inner side ends of the water inlet pressure-bearing flange (6) and the water outlet pressure-bearing flange (7) and the heat exchanger body (1).

3. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: A water inlet hole is provided inside the water inlet pressure-bearing flange (6) at a position corresponding to the fin tube (8), and a water outlet hole is provided inside the water outlet pressure-bearing flange (7) at a position corresponding to the fin tube (8), and both the water inlet hole and the water outlet hole are in communication with the fin tube (8).

4. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: The inner middle part of the attracting iron block (12) is movably connected with a shaft seat, and the driving shaft (13) is rotatably connected to the attracting iron block (12) through the shaft seat.

5. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: When the attracting iron block (12) slides in the chute of the limiting slider (9) to the edge close to the first electromagnet (10), the rubber cleaning piece (16) at the end of the linkage rotating rod (15) contacts the edge of the inner side of the water inlet pressure pipe (2) away from the water inlet pressure flange (6); When the attracting iron block (12) slides in the sliding groove of the limiting slider (9) to the edge close to the second electromagnet (11), the rubber cleaning piece (16) at the end of the linkage rotating rod (15) contacts the edge of the water inlet pressure flange (6).

6. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: The first electromagnet (10) and the second electromagnet (11) are both symmetrically installed with the limiting slider (9) as the center, and the input ends of the first electromagnet (10) and the second electromagnet (11) are both electrically connected to the output end of the external control power supply. The inside of the attracting iron block (12) located at the top position of the inner side of the water inlet pressure pipe (2) is connected with a locking bolt (17) through a thread.

7. The fin heat exchanger with convenient cleaning according to claim 6, characterized in that: The locking bolt (17) passes through the water inlet pressure-bearing pipe (2), and after passing through the water inlet pressure-bearing pipe (2), the locking bolt (17) is connected to the attracting iron block (12) through threaded locking. A tight gasket is provided at the connection between the locking bolt (17) and the water inlet pressure-bearing pipe (2).

8. The fin heat exchanger with convenient cleaning according to claim 1, characterized in that: Movable support frames (18) are fixedly installed at the bottom and top positions of the inner side of the water outlet pressure-bearing pipe (3), and the inner sides of the two movable support frames (18) are movably connected to movable rods (19). Resistance blades (20) for reducing the water outlet pressure are fixedly connected to the two side edges of the movable rods (19) at positions corresponding to the finned tubes (8).

9. The fin heat exchanger with convenient cleaning according to claim 8, characterized in that: A movable connecting seat is fixedly installed inside the movable support frame (18), and the movable rod (19) is movably connected to the movable support frame (18) through the movable connecting seat. The position of the resistance blade (20) corresponds to the position of the drainage port of the fin tube (8).

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