Descaling device for outer wall of coil pipe of heat exchanger

Abstract

The utility model relates to a descaling device for the outer wall of a heat exchanger coil, and relates to the technical field of heat exchange equipment. The descaling device for the outer wall of the coil pipe of the heat exchanger comprises a base, a protective cover, a rotating table and a spraying mechanism, the protective cover is arranged above the base and comprises a fixed protective plate and a movable closing door, the rotating table is horizontally arranged in the protective cover, the spraying mechanism is vertically arranged in the protective cover and is close to the inner wall of the protective cover, and the rotating table is arranged on the base. A pressing plate capable of moving up and down is further arranged in the protective cover, and the pressing plate is located above the rotating table and is opposite to the rotating table. And by moving the closing door, the shield can be opened and closed, the heat exchanger coil pipe can be conveniently placed and taken out, and meanwhile, descaling liquid medicine is prevented from splashing to the outside in the working process. The rotating table and the movable pressing plate are used in cooperation, the heat exchanger coil pipe can be clamped, the heat exchanger coil pipe can stably rotate, spraying dead angles are greatly reduced, and scale on the outer wall of the heat exchanger coil pipe is effectively removed.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, and in particular to a descaling device for the outer wall of a heat exchanger coil. Background Technology

[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. In desulfurization plants operating in gas extraction and transportation systems, the heat exchanger is a key component for heat exchange, and its performance directly impacts the overall system's energy efficiency. However, after prolonged operation, scale often accumulates on the outer wall of the coils, which not only reduces heat exchange efficiency but can also lead to equipment malfunctions.

[0003] Chinese patent CN214120922U discloses a heat exchanger descaling and cleaning device. Through continuous circulation of the introduction and return of chemicals, it flushes the inner wall of the heat exchanger, accelerating the dissolution of scale and improving cleaning quality. This patent is applicable to removing scale from the inner wall of heat exchangers, but not to removing scale from the outer wall of heat exchanger coils. Utility Model Content

[0004] This invention provides a descaling device for the outer wall of a heat exchanger coil, which can effectively remove scale from the outer wall of the heat exchanger coil.

[0005] This utility model provides a descaling device for the outer wall of a heat exchanger coil, including a base, a protective cover, a rotating platform, and a spraying mechanism. The protective cover is disposed above the base and includes a fixed protective plate and a movable closing door. The rotating platform is horizontally disposed inside the protective cover. The spraying mechanism is vertically disposed inside the protective cover and close to the inner wall of the protective cover. The protective cover also has a vertically movable pressing plate, which is located above the rotating platform and opposite to the rotating platform.

[0006] In one embodiment, the spraying mechanism includes a bracket, a nozzle, and a first drive member, wherein the nozzle is rotatably mounted on the bracket, and the first drive member is connected to the nozzle and can drive the nozzle to rotate on the bracket.

[0007] In one embodiment, the first driving member includes a first connecting rod, a second connecting rod, a third connecting rod, and a driving wheel. The two ends of the first connecting rod are respectively connected to the nozzle and the second connecting rod. One end of the second connecting rod is connected to one end of the third connecting rod, and the other end of the third connecting rod is connected to the driving wheel. The driving wheel is disposed on the bracket.

[0008] In one embodiment, the first driving member further includes a first motor and a transmission belt, the transmission belt being disposed on the output end of the first motor and the second driving wheel.

[0009] In one embodiment, the spraying mechanism further includes a water tank, a supply pipe, and an inlet pipe. The water tank is disposed inside the base. One end of the inlet pipe is connected to the water tank, and the other end of the inlet pipe is located outside the base. One end of the supply pipe is connected to the water tank, and the nozzle is connected to the supply pipe via a flexible hose.

[0010] In one embodiment, both the bracket and the first motor are disposed on the surface of the liquid supply pipe.

[0011] In one embodiment, at least two liquid supply pipes are provided, and an annular pipe is provided between the water tank and the liquid supply pipes.

[0012] In one embodiment, a second drive unit is provided below the rotary table, and the output end of the second drive unit passes through the annular pipe and is connected to the bottom of the rotary table.

[0013] In one embodiment, the cover further includes a top cover, on which a third driving member is provided, the third driving member being connected to the pressing plate.

[0014] In one embodiment, the base is provided with a drain hole.

[0015] Compared with existing technologies, the advantages of this invention are that the interior of the protective cover can form a space for placing the heat exchanger coils. The cover can be opened and closed by moving the closing door, facilitating the placement and removal of the heat exchanger coils, while preventing the descaling solution sprayed by the spraying mechanism from splashing onto the outside during operation. The spraying mechanism sprays the heat exchanger coils with the solution. The rotating table and movable pressing plate work together to hold the heat exchanger coils, allowing them to rotate stably and greatly reducing spray dead zones, thus effectively removing scale from the outer wall of the heat exchanger coils. Attached Figure Description

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the descaling device on the outer wall of the heat exchanger coil in an embodiment of this utility model;

[0018] Figure 2 This is one of the half-sectional views of the descaling device on the outer wall of the heat exchanger coil in an embodiment of this utility model;

[0019] Figure 3This is a partial structural schematic diagram of the spraying mechanism in an embodiment of this utility model;

[0020] Figure 4 This is a second half-sectional view of the descaling device on the outer wall of the heat exchanger coil in an embodiment of this utility model;

[0021] Figure 5 This is the third half-sectional view of the descaling device on the outer wall of the heat exchanger coil in an embodiment of this utility model.

[0022] Figure label:

[0023] 1. Base; 11. Drain hole; 2. Protective cover; 21. Fixed protective plate; 22. Closing door; 23. Top cover; 3. Rotary table; 4. Spraying mechanism; 41. Bracket; 42. Nozzle; 43. First driving component; 431. First connecting rod; 432. Second connecting rod; 433. Third connecting rod; 434. Drive wheel; 435. First motor; 436. Transmission belt; 437. Protective sleeve; 44. Water tank; 45. Liquid supply pipe; 46. Liquid inlet pipe; 47. Annular pipe; 48. Hose; 5. Pressing plate; 6. Second driving component; 7. Third driving component. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a descaling device for the outer wall of a heat exchanger coil according to an embodiment of the present invention includes a base 1, a protective cover 2, a rotating platform 3, and a spraying mechanism 4. The protective cover 2 is disposed above the base 1 and includes a fixed protective plate 21 and a movable closing door 22. The rotating platform 3 is horizontally disposed inside the protective cover 2. The spraying mechanism 4 is vertically disposed inside the protective cover 2 and close to the inner wall of the protective cover 2. The protective cover 2 is also provided with a pressing plate 5 that can move up and down. The pressing plate 5 is located above the rotating platform 3 and is disposed opposite to the rotating platform 3.

[0026] In this embodiment, the closing door 22 is an arc-shaped plate, and the fixed protective plate 21 is also arc-shaped and has a layer, so that the closing door 22 can be stored inside the fixed protective plate 21, which facilitates the placement and removal of the heat exchanger coil.

[0027] The interior of the protective cover 2 provides space for placing the heat exchanger coils. The cover 2 can be opened and closed by moving the closing door 22, facilitating the placement and removal of the heat exchanger coils while preventing the descaling solution sprayed by the spray mechanism 4 from splashing onto the outside during operation. The spray mechanism 4 sprays the heat exchanger coils with the solution. The rotating table 3 and the movable pressing plate 5 work together to hold the heat exchanger coils, allowing for stable rotation and significantly reducing spray dead zones, thus effectively removing scale from the outer wall of the heat exchanger coils.

[0028] like Figure 2 As shown, the spraying mechanism 4 includes a bracket 41, nozzles 42, and a first driving member 43. The nozzles 42 are rotatably mounted on the bracket 41, and the first driving member 43 is connected to the nozzles 42 and can drive the nozzles 42 to rotate on the bracket 41. In this embodiment, multiple nozzles 42 are provided and arranged along the height direction of the bracket 41. Multiple nozzles 42 can achieve a larger spray range. The rotatable nozzles 42 allow for adjustment of the spray direction of the descaling solution at a certain angle, thereby further eliminating spray dead zones and achieving a better descaling effect. In this embodiment, the bracket 41 is a frame structure, and the nozzles 42 are rotatably mounted inside the bracket 41 via a connecting shaft. The nozzles 42 have high stability and will not loosen even after prolonged oscillation.

[0029] like Figure 3 As shown, the first driving component 43 includes a first connecting rod 431, a second connecting rod 432, a third connecting rod 433, and a driving wheel 434. The two ends of the first connecting rod 431 are connected to the nozzle 42 and the second connecting rod 432, respectively. One end of the second connecting rod 432 is connected to one end of the third connecting rod 433, and the other end of the third connecting rod 433 is connected to the driving wheel 434. The driving wheel 434 is mounted on the bracket 41. The first driving component 43 forms a multi-link structure. The connection point between the third connecting rod 433 and the driving wheel 434 is not located at the center of the driving wheel 434. When the driving wheel 434 rotates, it can drive one end of the third connecting rod 433 to perform an arc motion, which in turn drives the second connecting rod 432 to swing. The swinging second connecting rod 432 then drives the first connecting rod 431 to rotate, ultimately changing the pitch angle of the nozzle 42. Since there are multiple nozzles 42 and multiple first connecting rods 431, and all the first connecting rods 431 are set on the second connecting rod 432, when the second connecting rod 432 swings, all the first connecting rods 431 and the nozzles 42 can swing synchronously, and the overall structure is compact.

[0030] Furthermore, the first driving component 43 also includes a first motor 435 and a transmission belt 436, with the transmission belt 436 disposed on the output end of the first motor 435 and the second drive wheel 434. When the first motor 435 rotates, it can drive the drive wheel 434 to rotate via the transmission belt 436. To avoid adverse effects of the descaling solution on the first motor 435, the first motor 435 is housed in a protective sleeve 437. The cable connected to the first motor 435 is not shown in the figure. By adjusting the rotation angle and speed of the first motor 435, the pitch angle and pitch speed of the nozzle 42 can be adjusted, enabling the nozzle 42 to achieve various oscillation modes.

[0031] like Figure 2 and Figure 5As shown, the spraying mechanism 4 also includes a water tank 44, a supply pipe 45, and an inlet pipe 46. The water tank 44 is located inside the base 1. One end of the inlet pipe 46 is connected to the water tank 44, and the other end is located outside the base 1. One end of the supply pipe 45 is connected to the water tank 44, and the nozzle 42 is connected to the supply pipe 45 via a hose 48. The supply pipe 45 provides an installation position for the bracket 41 and the first motor 435, both of which are located on the surface of the supply pipe 45. A water pump delivers descaling solution to the inlet pipe 46 into the water tank 44. The descaling solution then enters the supply pipe 45 and is then delivered to the nozzle 42 via the hose 48 for spraying. In this embodiment, the base 1 has a certain height, allowing the water tank 44 to be installed inside the base 1, thereby reducing the footprint of the device and facilitating its layout. Furthermore, the water tank 44, filled with the solution, has a certain weight, which effectively lowers the overall center of gravity of the device, thereby improving its stability.

[0032] Furthermore, in this embodiment, there are two liquid supply pipes 45, and an annular pipe 47 is provided between the water tank 44 and the liquid supply pipes 45. The provision of two or more liquid supply pipes 45 allows for the formation of two or more rows of nozzles 42 inside the protective cover 2, covering a larger spray area and improving the descaling effect. The annular pipe 47 can simultaneously supply descaling liquid to two or more liquid supply pipes 45, eliminating the need for a separate liquid supply pipe for each liquid supply pipe 45, resulting in a more compact structure.

[0033] like Figure 2 and Figure 4 As shown, a second driving component 6 is provided below the rotary table 3. The output end of the second driving component 6 passes through the annular pipe 47 and is connected to the bottom of the rotary table 3. The second driving component 6 is a motor. The structure of the annular pipe 47 allows the output end of the motor to pass through the annular pipe 47 and be connected to the bottom of the rotary table 3, so as to realize the rotation of the rotary table 3.

[0034] like Figure 1 and Figure 2 As shown, the protective cover 2 also includes a top cover 23, on which a third driving member 7 is provided. The third driving member 7 is connected to the pressing plate 5. In this embodiment, the third driving member 7 is an electric push rod, which can drive the pressing plate 5 to reciprocate in the vertical direction, thereby adapting to heat exchanger coils of different heights and achieving a good clamping effect.

[0035] like Figure 2 and Figure 4 As shown, the base 1 is provided with a drain hole 11, and the descaling solution in the protective cover 2 can be discharged to the outside of the device through the drain hole 11 to avoid the descaling solution from accumulating in the protective cover 2.

[0036] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A descaling device for the outer wall of a heat exchanger coil, characterized in that, The device includes a base, a protective cover, a rotating platform, and a spraying mechanism. The protective cover is located above the base and includes a fixed protective plate and a movable closing door. The rotating platform is horizontally located inside the protective cover, and the spraying mechanism is vertically located inside the protective cover and close to the inner wall of the protective cover. The protective cover also includes a vertically movable pressing plate located above the rotating platform and opposite to the rotating platform.

2. The descaling device for the outer wall of the heat exchanger coil according to claim 1, characterized in that, The spraying mechanism includes a bracket, a nozzle, and a first driving member. The nozzle is rotatably mounted on the bracket, and the first driving member is connected to the nozzle and can drive the nozzle to rotate on the bracket.

3. The descaling device for the outer wall of the heat exchanger coil according to claim 2, characterized in that, The first driving component includes a first connecting rod, a second connecting rod, a third connecting rod, and a driving wheel. The two ends of the first connecting rod are respectively connected to the nozzle and the second connecting rod. One end of the second connecting rod is connected to one end of the third connecting rod, and the other end of the third connecting rod is connected to the driving wheel. The driving wheel is mounted on the bracket.

4. The descaling device for the outer wall of the heat exchanger coil according to claim 3, characterized in that, The first driving component further includes a first motor and a transmission belt, wherein the transmission belt is disposed on the output end of the first motor and the driving wheel.

5. The descaling device for the outer wall of the heat exchanger coil according to claim 4, characterized in that, The spraying mechanism also includes a water tank, a liquid supply pipe, and an inlet pipe. The water tank is located inside the base. One end of the inlet pipe is connected to the water tank, and the other end of the inlet pipe is located outside the base. One end of the liquid supply pipe is connected to the water tank, and the nozzle is connected to the liquid supply pipe via a flexible hose.

6. The descaling device for the outer wall of the heat exchanger coil according to claim 5, characterized in that, Both the bracket and the first motor are mounted on the surface of the liquid supply pipe.

7. The descaling device for the outer wall of the heat exchanger coil according to claim 5, characterized in that, The liquid supply pipe is provided with at least two pipes, and a ring pipe is provided between the water tank and the liquid supply pipe.

8. The descaling device for the outer wall of the heat exchanger coil according to claim 7, characterized in that, A second drive unit is provided below the rotary table, and the output end of the second drive unit passes through the annular pipe and is connected to the bottom of the rotary table.

9. The descaling device for the outer wall of the heat exchanger coil according to claim 1, characterized in that, The protective cover also includes a top cover, on which a third driving component is provided, and the third driving component is connected to the pressing plate.

10. The descaling device for the outer wall of the heat exchanger coil according to claim 1, characterized in that, The base is provided with a drain hole.

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