Descaling structure for heat exchange unit

Abstract

The utility model discloses a descaling structure for a heat exchange unit, relates to the technical field of heat exchange units, and provides the following scheme aiming at the problems proposed in the background technology: the descaling structure comprises a water inlet cylinder, a heat exchange cylinder and a water drainage cylinder, the water inlet cylinder, the heat exchange cylinder and the water drainage cylinder are fixedly connected through two partition plates, and the surface of the water inlet cylinder is communicated with a water inlet pipe; the surface of the heat exchange cylinder communicates with a hot water pipe and a heat discharge pipe, the surface of the drainage cylinder communicates with a drainage pipe, and the left end of the water inlet cylinder is fixedly connected with a descaling assembly. The lead screw drives the circular plate to move left and right in the heat exchange cylinder, meanwhile, the long gear drives the rack and the positioning ring, and the bearing sleeve rotates on the surface of the circular plate, so that the rubber scraper attached to the inner wall of the heat exchange cylinder can remove scale on the inner wall of the heat exchange cylinder in all directions without four corners, the descaling effect is good, and descaling is more thorough.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange units, in particular to a descaling structure for heat exchange units. Background Technique

[0002] A heat exchange unit is a complete heat exchange station that automatically and continuously converts the heat obtained from the primary network into domestic water and heating water required by users. It can be used for water-water exchange or steam-water exchange and is relatively common in residences, institutions, factories, schools, etc.

[0003] After a heat exchange unit is used for a long time, a large amount of scale will be generated inside it. If it is not cleaned in time, the heat exchange efficiency will be affected. After retrieval, the patent with the publication number CN219589492U discloses a heat exchange unit with a descaling function. By arranging a plurality of descaling components on the outer circumference of a moving plate and contacting the inner wall of the heat exchange machine box, the moving plate is installed on a screw rod. When a rotating motor is started, the screw rod is driven to rotate, so that the moving plate moves left and right. The descaling blocks on the descaling components clean the inner wall of the heat exchange machine box. When the descaling blocks clean the inner wall of the heat exchange machine box, the scale cleaned is pushed to the scale discharge pipes on the left and right sides through movement. After the heat exchange component finishes working, the scale in the scale discharge pipes is cleaned and taken out, so as to realize descaling of the inner wall of the heat exchange machine box;

[0004] This patent drives the screw rod to rotate by setting a rotating motor, thereby driving the moving plate to move left and right, and uses the descaling plate on the moving plate to remove the scale on the inner wall of the heat exchange cavity, which has a certain descaling effect. However, there is still room for improvement. For example: the movement of the moving plate in this patent is affected by the threaded connection of the screw rod, so the rotation function cannot be realized. This results in a limited contact area between the descaling plate on the moving plate and the inner wall of the heat exchange cavity, and only the scale on the inner wall of the heat exchange cavity in contact with the descaling plate can be scraped off. The scale on the inner wall of the heat exchange cavity that cannot be in contact with the descaling plate cannot be scraped off, so that the descaling effect is not thorough enough, affecting the heat exchange efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a descaling structure for heat exchange units.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A descaling structure for a heat exchange unit, including a water inlet cylinder, a heat exchange cylinder, and a drain cylinder. The water inlet cylinder, the heat exchange cylinder, and the drain cylinder are fixedly connected by two partition plates. A water inlet pipe is communicated with the surface of the water inlet cylinder. A hot water pipe and a heat discharge pipe are communicated with the surface of the heat exchange cylinder. A drain pipe is communicated with the surface of the drain cylinder. A descaling pipe is fixedly connected to the surface of the heat exchange cylinder. A bracket is fixedly connected to the surface of the heat exchange cylinder. Two heat exchange pipes are fixedly connected to the inner wall of the heat exchange cylinder. The two ends of the heat exchange pipes are respectively communicated with the inside of the water inlet cylinder and the drain cylinder. An descaling component is fixedly connected to the left end of the water inlet cylinder. The descaling component includes a servo motor. The output end of the servo motor is fixedly connected with a lead screw. The right end of the lead screw is rotationally connected with the right inner wall of the heat exchange cylinder. A limiting rod is fixedly connected to the inner wall of the heat exchange cylinder. A circular plate is slidably connected to the surface of the limiting rod. A bearing sleeve is fixedly connected to the annular surface of the circular plate. A ring is fixedly connected to the annular surface of the bearing sleeve. A plurality of rubber scraping plates are fixedly connected to the annular surface of the ring. And the rubber scraping plates are lapped with the inner wall of the heat exchange cylinder. A positioning ring is fixedly connected to the left side of the ring. A plurality of racks are fixedly connected to the inner wall of the positioning ring. A driving motor is fixedly connected to the right end of the drain cylinder. The output end of the driving motor is fixedly connected with a long gear. And the left end of the long gear is rotationally connected with the left inner wall of the heat exchange cylinder.

[0008] Preferably, electric control valves are installed on the surfaces of the water inlet pipe, the hot water pipe, the heat discharge pipe, and the drain pipe.

[0009] Preferably, a threaded hole adapted to the lead screw is opened on the side surface of the circular plate. The circular plate is threadedly connected with the lead screw through the threaded hole. The lead screw can drive the circular plate to move left and right in the heat exchange cylinder.

[0010] Preferably, a through hole with an inner diameter larger than the outer diameter of the long gear is opened on the side surface of the circular plate. And the long gear is meshed with the rack. The rotation of the long gear can drive the rack and the positioning ring to rotate.

[0011] Preferably, two circular holes are opened on the side surface of the circular plate. The two heat exchange pipes respectively pass through the two circular holes. When the circular plate moves, it can move left and right on the surface of the heat exchange pipes through the two circular holes.

[0012] Preferably, two circular grooves are opened on the inner wall of the circular hole. Cleaning components are fixedly connected to the inner walls of the two circular grooves.

[0013] Preferably, the cleaning component includes circular columns. Fixing holes are opened on the opposite surfaces of the two circular columns. A top rod is slidably connected to the inner wall of the fixing hole. Limiting disks are fixedly connected to the opposite ends of the two top rods. Arc-shaped scraping plates are fixedly connected to the opposite ends of the two top rods. And the two arc-shaped scraping plates are slidably connected with the surface of the heat exchange pipes.

[0014] Preferably, springs are fixedly connected to the inner walls of both of the circular columns, and the opposite ends of the two springs are fixedly connected to the opposite surfaces of the two limiting disks respectively. The springs can always press the arc-shaped scraping plate against the surface of the heat exchange tube by their own acting forces.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. The lead screw drives the circular plate to move left and right in the heat exchange cylinder. At the same time, the long gear drives the rack and the positioning ring to rotate on the surface of the circular plate through the bearing sleeve, so that the rubber scraping plate close to the inner wall of the heat exchange cylinder can remove the scale on the inner wall of the heat exchange cylinder in all directions without dead corners, and the descaling effect is better and more thorough;

[0017] 2. When the circular plate moves, the spring can, by its own acting force, use the limiting disk and the ejector rod to always press the arc-shaped scraping plate tightly against the surface of the heat exchange cylinder, and the two arc-shaped scraping plates can scrape the scale on the outer wall of the heat exchange tube, so as to ensure that the heat exchange efficiency will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a descaling structure for a heat exchange unit proposed by the present utility model;

[0019] Figure 2 is a three-dimensional split structural schematic diagram of the internal structure of a descaling structure for a heat exchange unit proposed by the present utility model;

[0020] Figure 3 is a three-dimensional structural schematic diagram of a cleaning assembly of a descaling structure for a heat exchange unit proposed by the present utility model;

[0021] Figure 4 is a three-dimensional split structural schematic diagram of a circular column of a descaling structure for a heat exchange unit proposed by the present utility model.

[0022] In the figure: 1 water inlet cylinder, 2 heat exchange cylinder, 3 drain cylinder, 4 partition board, 5 water inlet pipe, 6 hot water pipe, 7 heat exhaust pipe, 8 drain pipe, 9 support, 10 heat exchange pipe, 11 servo motor, 12 lead screw, 13 limiting rod, 14 circular plate, 15 bearing sleeve, 16 ring, 17 rubber scraping plate, 18 positioning ring, 19 rack, 20 drive motor, 21 long gear, 22 circular column, 23 ejector rod, 24 limiting disk, 25 arc-shaped scraping plate, 26 spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Example 1, referring to Figure 1 and Figure 2, A descaling structure for a heat exchange unit, including a water inlet cylinder 1, a heat exchange cylinder 2, and a drain cylinder 3. The water inlet cylinder 1, the heat exchange cylinder 2, and the drain cylinder 3 are fixedly connected by two partition plates 4. A water inlet pipe 5 is communicated with the surface of the water inlet cylinder 1. A hot water pipe 6 and a heat discharge pipe 7 are communicated with the surface of the heat exchange cylinder 2. A drain pipe 8 is communicated with the surface of the drain cylinder 3. Electric control valves are installed on the surfaces of the water inlet pipe 5, the hot water pipe 6, the heat discharge pipe 7, and the drain pipe 8;

[0025] A descaling pipe is fixedly connected to the surface of the heat exchange cylinder 2. A support 9 is fixedly connected to the surface of the heat exchange cylinder 2. Two heat exchange pipes 10 are fixedly connected to the inner wall of the heat exchange cylinder 2. The two ends of the heat exchange pipe 10 are respectively communicated with the inside of the water inlet cylinder 1 and the drain cylinder 3;

[0026] Hot water enters the heat exchange cylinder 2 through the hot water pipe 6. Cold water enters the water inlet cylinder 1 through the water inlet pipe 5 and flows into the drain cylinder 3 through the heat exchange pipe 10. When passing through the heat exchange cylinder 2, the hot water in the heat exchange cylinder 2 can heat the cold water through the surface of the heat exchange pipe 10, so that the discharged water becomes hot water, thus completing the heat exchange process;

[0027] A descaling component is fixedly connected to the left end of the water inlet cylinder 1. The descaling component includes a servo motor 11. The output end of the servo motor 11 is fixedly connected to a lead screw 12. The right end of the lead screw 12 is rotatably connected to the right inner wall of the heat exchange cylinder 2. A limiting rod 13 is fixedly connected to the inner wall of the heat exchange cylinder 2. A circular plate 14 is slidably connected to the surface of the limiting rod 13. A threaded hole adapted to the lead screw 12 is provided on the side surface of the circular plate 14. The circular plate 14 is threadedly connected to the lead screw 12 through the threaded hole. Two circular holes are provided on the side surface of the circular plate 14. The two heat exchange pipes 10 respectively pass through the two circular holes;

[0028] The servo motor 11 can drive the lead screw 12 to rotate, thereby driving the circular plate 14 to move left and right in the heat exchange cylinder 2. Due to the blocking effect of the limiting rod 13, the circular plate 14 will not generate an offset rotation during the movement;

[0029] A bearing sleeve 15 is fixedly connected to the annular surface of the circular plate 14. A ring 16 is fixedly connected to the annular surface of the bearing sleeve 15. A number of rubber scraping plates 17 are fixedly connected to the annular surface of the ring 16, and the rubber scraping plates 17 are lapped with the inner wall of the heat exchange cylinder 2. A positioning ring 18 is fixedly connected to the left side of the ring 16. A number of racks 19 are fixedly connected to the inner wall of the positioning ring 18. A drive motor 20 is fixedly connected to the right end of the drain cylinder 3. The output end of the drive motor 20 is fixedly connected to a long gear 21, and the left end of the long gear 21 is rotatably connected to the left inner wall of the heat exchange cylinder 2. A through hole with an inner diameter larger than the outer diameter of the long gear 21 is provided on the side surface of the circular plate 14, and the long gear 21 is engaged with the rack 19;

[0030] The driving motor 20 can drive the long gear 21 to rotate, thereby driving the engaged rack 19 to rotate. The rack 19 drives the positioning ring 18 to rotate on the bearing sleeve 15. The rubber scraper 17 is attached to the inner wall of the heat exchange cylinder 2 and, at the same time, is affected by the left and right movement of the circular plate 14, and can scrape all the scale on the inner wall of the heat exchange cylinder 2 clean.

[0031] Example 2: Refer to Figure 2 , Figure 3 and Figure 4 , two circular grooves are provided on the inner wall of the circular hole, and cleaning components are fixedly connected to the inner walls of the two circular grooves. The cleaning components include circular columns 22. Fixed holes are provided on the opposite surfaces of the two circular columns 22. A top rod 23 is slidably connected to the inner wall of the fixed hole. Limiting disks 24 are fixedly connected to the opposite ends of the two top rods 23. Arc-shaped scrapers 25 are fixedly connected to the opposite ends of the two top rods 23, and both arc-shaped scrapers 25 are slidably connected to the surface of the heat exchange tube 10. Springs 26 are fixedly connected to the inner walls of the two circular columns 22, and the opposite ends of the two springs 26 are respectively fixedly connected to the opposite surfaces of the two limiting disks 24;

[0032] Through the acting force, the spring 26 can, through the limiting disk 24 and the top rod 23, press the arc-shaped scraper 25 against the surface of the heat exchange tube 10, so that when the circular plate 14 moves left and right, the arc-shaped scraper 25 can scrape the scale on the surface of the heat exchange tube 10.

[0033] Working principle: First, pour hot water into the heat exchange cylinder 2 through the hot water pipe 6. The hot water heats the surface of the heat exchange tube 10 in the heat exchange cylinder 2. At the same time, pour cold water into the water inlet cylinder 1 through the water inlet pipe 5. Since both ends of the heat exchange tube 10 extend into the water inlet cylinder 1 and the drain cylinder 3 respectively, the cold water can pass through the heat exchange tube 10 and enter the drain cylinder 3. When the cold water passes through the heat exchange tube 10, it is heated by the hot water in the heat exchange cylinder 2 to achieve the heat exchange function. At the same time, use the drain pipe 8 to discharge the heated hot water. When it is necessary to clean the scale in the heat exchange cylinder 2, turn on the servo motor 11 and the driving motor 20. The servo motor 11 can drive the lead screw 12 to rotate forward and backward, thereby driving the circular plate 14 to move left and right in the heat exchange cylinder 2. The circular plate 14 is blocked by the limiting rod 13 and will not rotate offset. At the same time, the driving motor 20 drives the long gear 21 to rotate, and can drive the positioning ring 18 to rotate through the rack 19. The positioning ring 18 drives a plurality of rubber scrapers 17 to contact the inner wall of the heat exchange cylinder 2, thereby scraping the scale on the inner wall of the heat exchange cylinder 2 clean. At the same time, during the movement of the circular plate 14, the spring 26 can drive the limiting disk 24 and the top rod 23 through the acting force to press the arc-shaped scraper 25 against the surface of the heat exchange tube 10, so as to scrape the scale remaining on the surface of the heat exchange tube 10 through the arc-shaped scraper 25, avoiding the influence of too thick scale on the heat exchange effect. The removed scale is discharged through the scale discharge pipe.

[0034] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A descaling structure for a heat exchange unit, comprising a water inlet cylinder (1), a heat exchange cylinder (2) and a drainage cylinder (3). The water inlet cylinder (1), the heat exchange cylinder (2) and the drainage cylinder (3) are fixedly connected by two partition plates (4). A water inlet pipe (5) is communicated with the surface of the water inlet cylinder (1). A hot water pipe (6) and a heat dissipation pipe (7) are communicated with the surface of the heat exchange cylinder (2). A drainage pipe (8) is communicated with the surface of the drainage cylinder (3). A descaling pipe is fixedly connected to the surface of the heat exchange cylinder (2). A bracket (9) is fixedly connected to the surface of the heat exchange cylinder (2). Two heat exchange pipes (10) are fixedly connected to the inner wall of the heat exchange cylinder (2). The two ends of the heat exchange pipe (10) are respectively communicated with the inside of the water inlet cylinder (1) and the drainage cylinder (3). A descaling component is fixedly connected to the left end of the water inlet cylinder (1), and it is characterized in that, The descaling component includes a servo motor (11). The output end of the servo motor (11) is fixedly connected to a lead screw (12). The right end of the lead screw (12) is rotatably connected to the right inner wall of the heat exchange cylinder (2). A limiting rod (13) is fixedly connected to the inner wall of the heat exchange cylinder (2). A circular plate (14) is slidably connected to the surface of the limiting rod (13). A bearing sleeve (15) is fixedly connected to the annular surface of the circular plate (14). A circular ring (16) is fixedly connected to the annular surface of the bearing sleeve (15). A plurality of rubber scraping plates (17) are fixedly connected to the annular surface of the circular ring (16), and the rubber scraping plates (17) are in contact with the inner wall of the heat exchange cylinder (2). A positioning ring (18) is fixedly connected to the left side of the circular ring (16). A plurality of racks (19) are fixedly connected to the inner wall of the positioning ring (18). A driving motor (20) is fixedly connected to the right end of the drain pipe (3). The output end of the driving motor (20) is fixedly connected to a long gear (21), and the left end of the long gear (21) is rotatably connected to the left inner wall of the heat exchange cylinder (2).

2. The descaling structure for a heat exchange unit according to claim 1, characterized in that Electric control valves are installed on the surfaces of the water inlet pipe (5), the hot water pipe (6), the heat dissipation pipe (7) and the drain pipe (8).

3. The descaling structure for a heat exchange unit according to claim 1, characterized in that, A threaded hole adapted to the lead screw (12) is formed in the side surface of the circular plate (14), and the circular plate (14) is threadedly connected to the lead screw (12) through the threaded hole.

4. A descaling structure for a heat exchange unit according to claim 1, characterized in that, A through hole with an inner diameter larger than the outer diameter of the long gear (21) is formed in the side surface of the circular plate (14), and the long gear (21) is meshed with the rack (19).

5. The descaling structure for a heat exchange unit according to claim 1, characterized in that, Two circular holes are formed in the side surface of the circular plate (14), and the two heat exchange tubes (10) respectively pass through the two circular holes.

6. The descaling structure for a heat exchange unit according to claim 5, characterized in that, Two circular grooves are formed in the inner wall of the circular hole, and cleaning components are fixedly connected to the inner walls of the two circular grooves.

7. The descaling structure for a heat exchange unit according to claim 6, characterized in that, The cleaning component includes circular columns (22). Fixing holes are formed in the opposite surfaces of the two circular columns (22). A ejector rod (23) is slidably connected to the inner wall of the fixing hole. Limiting disks (24) are fixedly connected to the opposite ends of the two ejector rods (23). Arc-shaped scraping plates (25) are fixedly connected to the opposite ends of the two ejector rods (23), and the two arc-shaped scraping plates (25) are slidably connected to the surface of the heat exchange tube (10).

8. The descaling structure for a heat exchange unit according to claim 7, characterized in that, Springs (26) are fixedly connected to the inner walls of the two circular columns (22), and the opposite ends of the two springs (26) are respectively fixedly connected to the opposite surfaces of the two limiting disks (24).

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