A heat exchanger flushing device

Abstract

The utility model relates to a heat exchanger flushing device, including mobile trolley, power component, water tank, water intake component and backwater component, power component sets up in one end of mobile trolley, water tank sets up in the other end of mobile trolley, one end of water intake component and water tank water outlet connection, the other end of water intake component and heat exchanger's reserved pipeline one connection, power component is connected in series in water intake component and is used to provide cleaning water for heat exchanger, one end of backwater component and heat exchanger's reserved pipeline two connections, the other end of backwater component and water tank water inlet connection. Through setting up mobile trolley, realize device whole movable, be convenient for flexible adaptation different position heat exchanger, improve equipment versatility, and the design of power component, water tank, water intake component and backwater component, form complete cleaning water circulation system, improve the utilization of cleaning water, simultaneously need not to disassemble heat exchanger body and form closed flushing loop, realize on -line cleaning, reduce downtime, improve cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and specifically to a heat exchanger flushing device. Background Technology

[0002] Heat exchangers need to be cleaned regularly to improve heat exchange efficiency. Traditional cleaning methods require disassembling the heat exchanger for cleaning, which leads to problems such as long downtime, low cleaning efficiency and high labor costs. There is an urgent need for a convenient flushing device that does not require disassembly of the heat exchanger. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an online flushing device that does not require disassembly of the heat exchanger.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A heat exchanger flushing device includes a mobile trolley, a power component, a water tank, a water supply component, and a water return component. The power component is disposed at one end of the mobile trolley, and the water tank is disposed at the other end of the mobile trolley. One end of the water supply component is connected to the outlet of the water tank, and the other end of the water supply component is connected to a reserved pipeline of the heat exchanger. The power component is connected in series in the water supply component and is used to provide cleaning water to the heat exchanger. One end of the water return component is connected to a reserved pipeline of the heat exchanger, and the other end of the water return component is connected to the inlet of the water tank.

[0005] The beneficial effects of this utility model are as follows: by setting up a mobile trolley, the entire device can be moved, which facilitates flexible adaptation to heat exchangers in different positions and improves the versatility and adaptability of the equipment to different scenarios; the design of the power component, water tank, water supply component and water return component forms a complete cleaning water circulation system, which improves the utilization rate of cleaning water and reduces water consumption; at the same time, the water supply component and water return component are respectively connected to the reserved pipe one and reserved pipe two of the heat exchanger, which can form a closed flushing loop without disassembling the heat exchanger body, realize online cleaning, solve the production interruption problem caused by the need to stop disassembly in traditional cleaning, reduce downtime and improve cleaning efficiency.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the power assembly includes a motor and a centrifugal pump, with the output end of the motor and the shaft of the centrifugal pump fixedly connected, and the centrifugal pump connected in series in the water supply assembly.

[0008] The beneficial effects of adopting the above-mentioned further solution are: the motor and the centrifugal pump are directly connected by shaft, which has a simple structure, high transmission efficiency, and stable and reliable operation. The motor provides stable power to the centrifugal pump and can output continuous and controllable water pressure and flow rate, ensuring the flow rate and impact force of the cleaning water inside the heat exchanger and improving the cleaning efficiency.

[0009] Furthermore, the water supply assembly includes a first water supply pipe, a second water supply pipe, and a third water supply pipe. One end of the first water supply pipe is connected to the outlet of the water tank, and the other end of the first water supply pipe is connected to the inlet of the centrifugal pump. One end of the second water supply pipe is connected to the outlet of the centrifugal pump, and the other end of the second water supply pipe is connected to one end of the third water supply pipe. The other end of the third water supply pipe is connected to the interface of the reserved pipe.

[0010] The advantages of adopting the above-mentioned further solution are: by setting up segmented water supply pipelines, the pipeline layout is optimized, which facilitates installation and disassembly. At the same time, the pipeline connection path is clarified, ensuring that the cleaning water is supplied to the heat exchanger from the water tank after being pressurized by the pump, so as to clean the heat exchanger.

[0011] Furthermore, a first valve is installed on the second section of the water supply pipeline.

[0012] The advantages of adopting the above-mentioned further solution are: the first valve on the second water supply pipeline can directly control the flow of cleaning water supplied to the heat exchanger, which facilitates quick start and stop of water supply as needed during the cleaning process, improving operational flexibility; closing the first valve during maintenance can block the water flow, preventing leakage when disassembling the pipeline and improving maintenance safety; at the same time, the water flow rate can be adjusted by the valve to adapt to heat exchangers with different levels of fouling, avoiding damage to the equipment due to excessive flow or affecting the cleaning effect due to insufficient flow.

[0013] Furthermore, a branch pipe is installed on the second section of the water supply pipeline, and a pressure gauge is installed on the branch pipe.

[0014] The advantages of adopting the above-mentioned further solutions are: the pressure gauges on the branch pipelines can monitor the water pressure in real time, making it easy for operators to intuitively grasp the pressure status of the cleaning water, ensuring that the pressure is within the heat exchanger's tolerance range, avoiding damage to the equipment due to excessive pressure or incomplete cleaning due to excessively low pressure; and timely warnings can be given when the pressure is abnormal, facilitating rapid troubleshooting and ensuring the continuity and safety of the cleaning process.

[0015] Furthermore, it also includes a circulation pipeline, one end of which is connected to the water tank, and the other end of which is connected to the second section of the water supply pipeline. A second valve is installed on the circulation pipeline.

[0016] The beneficial effects of adopting the above-mentioned further solution are as follows: the circulation pipeline allows the cleaning water to form an internal circulation between the water tank and the centrifugal pump. When starting the equipment, the second valve can be opened first to preheat the system through the circulation pipeline and effectively mix the cleaning agent, avoiding the impact of unstable parameters on the cleaning effect when water is directly supplied to the heat exchanger. At the same time, the system pressure can be adjusted through the circulation pipeline in conjunction with the second valve to balance the pressure fluctuation of the water supply components, ensuring that the pressure of the cleaning water supplied to the heat exchanger is within the heat exchanger's tolerance range, thereby improving the overall operational stability.

[0017] Furthermore, a filter screen is installed at one end of the first section of the water supply pipe, and the filter screen is inside the water tank and fixedly connected to the first section of the water supply pipe.

[0018] The beneficial effects of adopting the above-mentioned further solution are as follows: Since the entire cleaning process is a circulating water process, the dirt in the heat exchanger being cleaned will flow into the water tank. The filter screen can filter impurities and sediments in the cleaning water, prevent particulate matter from entering the centrifugal pump or heat exchanger, avoid pipeline blockage, equipment wear, etc., ensure the cleanliness of the cleaning water entering the heat exchanger, improve the flushing effect on the dirt inside the heat exchanger, and reduce secondary pollution.

[0019] Furthermore, the water return assembly includes a water return pipe, one end of which is connected to interface two of the reserved pipe two, and the other end of which is connected to the water inlet of the water tank.

[0020] The beneficial effects of adopting the above-mentioned further solution are as follows: the return water pipeline introduces the cleaned water into the water tank, thereby forming a closed-loop cycle of "water tank - water supply component - heat exchanger - return water component - water tank", realizing the reuse of water resources and cleaning agents, reducing water consumption and chemical costs. At the same time, the closed-loop design reduces the need for external water replenishment, shortens the cleaning preparation time, and improves online cleaning efficiency.

[0021] Furthermore, the heat exchanger flushing device also includes a drain pipe, which is connected to the drain outlet of the water tank, and the other end of the drain pipe is connected to a wastewater treatment tank. A third valve is installed on the drain pipe.

[0022] The advantages of adopting the above-mentioned further solution are: the drainage pipeline is controlled by a third valve, which allows wastewater in the water tank (such as after cleaning or during tank cleaning) to be directly discharged into the wastewater treatment pond, avoiding pollution caused by indiscriminate discharge of wastewater. At the same time, controlling the drainage pipeline through the third valve makes it quick and convenient to drain wastewater from the water tank and replace the water when needed, ensuring the subsequent cleaning effect and improving operational convenience.

[0023] Furthermore, the water tank has an opening at its upper end.

[0024] The beneficial effects of adopting the above-mentioned further solution are: the opening at the top of the water tank makes it easy to add clean water, cleaning agents, etc. directly into the water tank, and the opening can be used to observe the water level and water quality (such as whether there is sediment or foam) in the water tank, making it easy to judge in time whether water needs to be added, water changed or the concentration of the agent needs to be adjusted. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the heat exchanger flushing device of this utility model; Figure 2 This is a schematic diagram of the heat exchanger of this utility model.

[0026] The attached diagram lists the components represented by each number as follows: 1. First valve; 2. Second valve; 3. Third valve; 4. Filter screen; 5. Pressure gauge; 10. Mobile trolley; 20. Centrifugal pump; 21. Motor; 30. Water tank; 40. Heat exchanger; 41. Inlet pipe; 42. Return pipe; 51. Reserved pipe line one; 52. Reserved pipe line two; 53. Interface one; 54. Interface two; 61. First section of water supply pipe; 62. Second section of water supply pipe; 621. Branch pipe; 622. Circulation pipe; 63. Third section of water supply pipe; 70. Return pipe; 80. Drainage pipe. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] like Figures 1-2 As shown, this embodiment provides a heat exchanger flushing device, including a mobile trolley 10, a power unit, a water tank 30, a water supply unit, and a water return unit. The power unit is located at one end of the mobile trolley 10, and the water tank 30 is located at the other end of the mobile trolley 10. One end of the water supply unit is connected to the outlet of the water tank 30, and the other end of the water supply unit is connected to a reserved pipe 51 of the heat exchanger 40. The power unit is connected in series in the water supply unit and is used to provide cleaning water to the heat exchanger 40. One end of the water return unit is connected to a reserved pipe 52 of the heat exchanger 40, and the other end of the water return unit is connected to the inlet of the water tank 30.

[0029] By setting up a mobile trolley 10, the entire device can be moved, making it easy to flexibly adapt to heat exchangers 40 in different locations, thus improving the equipment's versatility and adaptability to different scenarios. The design of the power unit, water tank 30, water supply unit, and water return unit forms a complete cleaning water circulation system, improving the utilization rate of cleaning water and reducing water consumption. At the same time, the water supply unit and the water return unit are respectively connected to the reserved pipe 51 and reserved pipe 52 of the heat exchanger 40, forming a closed flushing loop without disassembling the heat exchanger 40 body, realizing online cleaning, solving the production interruption problem caused by the need to stop and disassemble the traditional cleaning, reducing downtime, and improving cleaning efficiency.

[0030] Specifically, the mobile cart 10 includes a base plate, with casters installed under the base plate and a locking mechanism. When the mobile cart 10 moves to a suitable position, the casters are locked by the locking mechanism, thereby making the flushing device more stable and facilitating the flushing of the heat exchanger 40.

[0031] Specifically, a handle is also provided at one end of the base plate to facilitate the operator to move the entire device to the location that needs to be rinsed.

[0032] Specifically, during normal operation, the heat exchanger 40 has an inlet pipe 41 and a return pipe 42. A fourth valve is installed on the inlet pipe 41, and a fifth valve is installed on the return pipe 42. Reserved pipe 1 51 is located between the fifth valve on the return pipe 42 and the heat exchanger 40, and reserved pipe 2 52 is located between the fourth valve on the inlet pipe 41 and the heat exchanger 40. During cleaning of the heat exchanger 40, both the fourth and fifth valves are closed, and the water supply component of the flushing device is connected to reserved pipe 1 51, and the return component is connected to reserved pipe 2 52. During cleaning, the inlet and return water pipes of the flushing device are reversed compared to the inlet and return water pipes of the heat exchanger 40 during operation. This is because when the heat exchanger 40 is working, the medium flows through the internal flow channel of the heat exchanger 40 in a fixed direction. After long-term operation, areas with low flow velocity, such as the end of the flow channel and corners, are prone to forming "dead corners" and accumulating stubborn dirt. During reverse flushing, the water flow enters from the end of the original flow channel and directly impacts these "dead corner" areas. The impact force of the water flow breaks the adhesion balance of the dirt, which can better remove residual dirt that is difficult to reach by traditional forward flushing.

[0033] Based on the above technical solution, the power assembly includes a motor 21 and a centrifugal pump 20. The output end of the motor 21 is fixedly connected to the shaft of the centrifugal pump 20, and the centrifugal pump 20 is connected in series in the water supply assembly.

[0034] The motor 21 is directly shaft connected to the centrifugal pump 20, which has a simple structure, high transmission efficiency, and stable and reliable operation. The motor 21 provides stable power to the centrifugal pump 20 and can output continuous and controllable water pressure and flow rate, ensuring the flow rate and impact force of the cleaning water inside the heat exchanger 40, thereby improving the cleaning efficiency.

[0035] Furthermore, based on the above technical solution, the water supply assembly includes a first water supply pipe 61, a second water supply pipe 62, and a third water supply pipe 63. One end of the first water supply pipe 61 is connected to the outlet of the water tank 30, and the other end of the first water supply pipe 61 is connected to the inlet of the centrifugal pump 20. One end of the second water supply pipe 62 is connected to the outlet of the centrifugal pump 20, and the other end of the second water supply pipe 62 is connected to one end of the third water supply pipe 63. The other end of the third water supply pipe 63 is connected to the interface 53 of the reserved pipe 51.

[0036] By setting up segmented water supply pipelines, the pipeline layout is optimized, making installation and disassembly easier. At the same time, the pipeline connection path is clearly defined, ensuring that cleaning water is supplied from the water tank 30 to the heat exchanger 40 after being pressurized by the pump, so as to clean the heat exchanger 40.

[0037] Specifically, the two ends of the third water supply pipe 63 are connected to the second water supply pipe 62 and the reserved pipe 51 respectively through flanges.

[0038] Based on the above technical solution, a first valve 1 is installed on the second section of the water supply pipeline 62.

[0039] The first valve 1 on the second water supply pipeline 62 can directly control the flow of cleaning water supplied to the heat exchanger 40, which facilitates quick start and stop of water supply as needed during the cleaning process, improving operational flexibility. When maintaining, closing the first valve 1 can block the water flow, preventing leakage when disassembling the pipeline and improving maintenance safety. At the same time, the water flow rate can be adjusted by the valve to adapt to heat exchangers 40 with different levels of dirt, avoiding damage to the equipment due to excessive flow or affecting the cleaning effect due to insufficient flow.

[0040] Based on the above technical solution, a branch pipe 621 is provided on the second water supply pipe 62, and a pressure gauge 5 is provided on the branch pipe 621.

[0041] The pressure gauge 5 on the branch pipe 621 can monitor the water pressure in real time, allowing operators to intuitively grasp the pressure status of the cleaning water and ensure that the pressure is within the heat exchanger's tolerance range of 40. This avoids damage to the equipment due to excessive pressure or incomplete cleaning due to insufficient pressure. In case of abnormal pressure (such as a sudden increase in pressure caused by pipe blockage), it can provide timely warnings, facilitating rapid troubleshooting and ensuring the continuity and safety of the cleaning process.

[0042] Specifically, a stop valve is also installed on branch pipe 621. When pressure gauge 5 needs to be repaired or replaced, the stop valve is closed to facilitate the replacement or repair work.

[0043] Based on the above technical solution, a circulation pipe 622 is also included. One end of the circulation pipe 622 is connected to the water tank 30, and the other end of the circulation pipe 622 is connected to the second water supply pipe 62. A second valve 2 is provided on the circulation pipe 622.

[0044] The circulation pipeline 622 allows the cleaning water to form an internal circulation between the water tank 30 and the centrifugal pump 20. When starting the equipment, the second valve 2 can be opened first to preheat the system through the circulation pipeline 622 and effectively mix the cleaning agent. This avoids the cleaning effect being affected by unstable parameters when water is directly supplied to the heat exchanger 40. At the same time, the system pressure can be adjusted through the circulation pipeline 622 in conjunction with the second valve 2 to balance the pressure fluctuations of the water supply components, ensuring that the pressure of the cleaning water supplied to the heat exchanger 40 is within the tolerance range of the heat exchanger 40, thereby improving the overall operational stability.

[0045] Based on the above technical solution, a filter screen 4 is provided at one end of the first water supply pipe 61, and the filter screen 4 is inside the water tank 30 and fixedly connected to the first water supply pipe 61.

[0046] Since the entire cleaning process uses circulating water, the dirt inside the heat exchanger 40 will flow into the water tank 30. The filter screen 4 can filter impurities and sediments in the cleaning water, preventing particulate matter from entering the centrifugal pump 20 or the heat exchanger 40, avoiding pipe blockage and equipment wear (such as impeller jamming of the centrifugal pump 20 or scratches inside the heat exchanger 40), ensuring the cleanliness of the cleaning water entering the heat exchanger 40, improving the flushing effect on the dirt inside the heat exchanger 40, and reducing secondary pollution.

[0047] Based on the above technical solution, the water return component includes a water return pipe 70, one end of which is connected to the interface 54 of the reserved pipe 52, and the other end of which is connected to the inlet of the water tank 30.

[0048] The return water pipe 70 introduces the cleaned water into the water tank 30, thus forming a closed-loop cycle of "water tank 30 - water supply assembly - heat exchanger 40 - return water assembly - water tank 30", enabling the reuse of water resources and cleaning agents, reducing water consumption and chemical costs. At the same time, the closed-loop design reduces the need for external water replenishment, shortens cleaning preparation time, and improves online cleaning efficiency.

[0049] Specifically, the two ends of the return water pipe 70 are connected to the water tank 30 and the reserved pipe 52 respectively through flanges.

[0050] Based on the above technical solution, the heat exchanger flushing device also includes a drain pipe 80, which is connected to the drain outlet of the water tank 30. The other end of the drain pipe 80 is connected to the wastewater treatment tank, and a third valve 3 is provided on the drain pipe 80.

[0051] The drainage pipe 80 is controlled by the third valve 3, which allows wastewater in the water tank 30 (such as after cleaning or when cleaning the water tank 30) to be directly discharged into the wastewater treatment pool, preventing pollution caused by indiscriminate discharge of wastewater. At the same time, controlling the drainage pipe 80 through the third valve 3 allows for quick and convenient drainage of wastewater from the water tank 30 to replace the water, ensuring the effectiveness of subsequent cleaning and improving operational convenience.

[0052] Based on the above technical solution, the upper end of the water tank 30 is provided with an opening.

[0053] The opening at the top of the water tank 30 makes it easy to add clean water, cleaning agents, etc. directly into the water tank 30. The opening can be used to observe the water level and water quality in the water tank 30 (such as whether there is sediment or foam), so as to make timely judgment on whether water needs to be added, water changed, or the concentration of the agent needs to be adjusted.

[0054] In a specific example, both the third section of the water supply pipe 63 and the return pipe 70 are steel wire reinforced flexible hoses. Step 1: Deployment and Connection: First, push the mobile trolley 10 to move the entire device next to the heat exchanger 40 that needs cleaning. Lock the casters using the locking mechanism to stabilize the device. Close the valves on the inlet pipe 41 and the return pipe 42 of the heat exchanger 40. Connect the third section of the water supply pipe 63 to interface 1 53, and connect the return pipe 70 to interface 2 54. Step 2: Chemical Circulation Cleaning: Close the third valve 3, and add 1m³ of water to the water tank 30 through the opening at the top of the tank 30. 3 The desalinated water at approximately 60℃ is mixed with a descaling agent (5-8% citric acid + 0.5% circulating water scale inhibitor) in a specific ratio. The pH of the cleaning water is tested using test paper to ensure it does not exceed 2.0. The first valve 1, the second valve 2, and the stop valve on branch pipe 621 are opened. The pressure entering heat exchanger 40 is maintained within a certain range by monitoring pressure gauge 5 and adjusting the first and second valves 1 and 2. The system is then circulated and flushed in a closed loop for 4-6 hours. Step 3: Wastewater Discharge: The third valve 3 is opened to discharge the wastewater after cleaning into the wastewater treatment tank through drain pipe 80. Step 4: Rinsing and Wastewater Discharge: The third valve 3 is closed, and clean water is added to water tank 30 for rinsing until the pH of the circulating flushing water is between 6.5 and 7.5, and the turbidity is <5 NTU. Rinsing is then stopped, and the third valve 3 is opened to discharge the wastewater into the wastewater treatment tank, completing the cleaning process.

[0055] The heat exchanger flushing device of this utility model can realize the overall movement of the device, which can be flexibly adapted to heat exchangers 40 in different positions, improve the versatility and adaptability of the equipment, and form a closed flushing circuit without disassembling the heat exchanger 40 body to realize online cleaning. This solves the production interruption problem caused by the need to stop disassembly for traditional cleaning, reduces downtime, and improves cleaning efficiency.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat exchanger flushing device, characterized in that, The device includes a mobile cart (10), a power unit, a water tank (30), a water supply unit, and a water return unit. The power unit is located at one end of the mobile cart (10), and the water tank (30) is located at the other end of the mobile cart (10). One end of the water supply unit is connected to the outlet of the water tank (30), and the other end of the water supply unit is connected to the reserved pipe (51) of the heat exchanger (40). The power unit is connected in series in the water supply unit and is used to provide cleaning water to the heat exchanger (40). One end of the water return unit is connected to the reserved pipe (52) of the heat exchanger (40), and the other end of the water return unit is connected to the inlet of the water tank (30). The power assembly includes a motor (21) and a centrifugal pump (20). The output end of the motor (21) is fixedly connected to the shaft of the centrifugal pump (20), and the centrifugal pump (20) is connected in series in the water supply assembly. The water supply assembly includes a first water supply pipe (61), a second water supply pipe (62), and a third water supply pipe (63). One end of the first water supply pipe (61) is connected to the outlet of the water tank (30), and the other end of the first water supply pipe (61) is connected to the inlet of the centrifugal pump (20). One end of the second water supply pipe (62) is connected to the outlet of the centrifugal pump (20), and the other end of the second water supply pipe (62) is connected to one end of the third water supply pipe (63). The other end of the third water supply pipe (63) is connected to the interface (53) of the reserved pipe (51). It also includes a circulation pipe (622), one end of which is connected to the water tank (30), and the other end of which is connected to the second section of the water supply pipe (62). A second valve (2) is provided on the circulation pipe (622).

2. The heat exchanger flushing device according to claim 1, characterized in that, The second section of the water supply pipeline (62) is equipped with a first valve (1).

3. The heat exchanger flushing device according to claim 1, characterized in that, A branch pipe (621) is provided on the second section of the water supply pipe (62), and a pressure gauge (5) is provided on the branch pipe (621).

4. The heat exchanger flushing device according to claim 1, characterized in that, A filter screen (4) is provided at one end of the first water supply pipe (61), and the filter screen (4) is inside the water tank (30) and fixedly connected to the first water supply pipe (61).

5. The heat exchanger flushing device according to claim 1, characterized in that, The water return assembly includes a water return pipe (70), one end of which is connected to the interface (54) of the reserved pipe (52), and the other end of which is connected to the inlet of the water tank (30).

6. A heat exchanger flushing device according to any one of claims 1-5, characterized in that, The heat exchanger flushing device also includes a drain pipe (80), which is connected to the drain outlet of the water tank (30). The other end of the drain pipe (80) is connected to the wastewater treatment tank. A third valve (3) is provided on the drain pipe (80).

7. The heat exchanger flushing device according to claim 1, characterized in that, The water tank (30) has an opening at its upper end.

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