A cleaning device for plate heat exchangers

Abstract

The utility model discloses a kind of cleaning devices for plate heat exchanger, including the cleaning tank with top being open, ultrasonic vibration plate is installed in the cleaning tank inner chamber bottom, placing rack is erected in the cleaning tank, the water pipe with adjustable height is provided at the both sides of the placing rack, the water pipe side is installed with several spray heads along its length direction, the water supply assembly is provided outside the cleaning tank, and water supply assembly includes the communication pipe being communicated with the water pipe inner chamber.This cleaning device for plate heat exchanger, plate heat exchanger is cleaned using offline mode, plate heat exchanger can be cleaned as a whole without splitting plate heat exchanger in cleaning process, and cleaning includes internal cleaning and outside cleaning, with higher cleaning efficiency and cleaning quality, guarantee the heat exchange efficiency of plate heat exchanger, compared with disassembly and cleaning, can effectively reduce personnel working intensity, facilitate the cleaning use of plate heat exchanger.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning devices, specifically a cleaning device for plate heat exchangers. Background Technology

[0002] In the preparation of electrolytic copper foil solution, plate heat exchangers are required to provide a stable temperature. Affected by factors such as water quality, flow rate, and pressure, scale and other foreign matter will accumulate on the plates of the plate heat exchanger after a certain period of use, resulting in reduced heat exchange efficiency. Currently, cleaning plate heat exchangers requires disassembly and replacement of the cleaned plates. This process is inefficient, and repeated disassembly and reassembly can easily lead to leakage. Furthermore, the need to replace sealing plates increases production costs and labor intensity, resulting in shortcomings in the cleaning process of plate heat exchangers. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a cleaning device for plate heat exchangers. This device cleans plate heat exchangers offline, without disassembling them, and can clean the entire plate heat exchanger. The cleaning includes both internal and external cleaning, resulting in high cleaning efficiency and quality, ensuring the heat exchange efficiency of the plate heat exchanger. Compared to disassembly cleaning, this effectively reduces the workload of personnel and facilitates the cleaning and use of plate heat exchangers, thus effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cleaning device for plate heat exchangers, comprising a cleaning tank with an open top, an ultrasonic vibrating plate installed at the bottom of the inner cavity of the cleaning tank, a placement rack installed inside the cleaning tank, height-adjustable water pipes installed on both sides of the placement rack, a plurality of nozzles communicating with the inner cavity of the water pipes installed along their length on the side of the water pipes, a water supply assembly installed outside the cleaning tank, and the water supply assembly including a connecting pipe communicating with the inner cavity of the water pipes, a conveying pipe communicating with the inner cavity of the connecting pipes installed on the connecting pipes, and a connecting pipe provided at the end of the conveying pipes.

[0005] As a preferred technical solution of this utility model, an installation plate is slidably provided on the outer side of the placement frame, and positioning plates are fixed at both ends of the installation plate. The positioning plates are snapped onto the outer side of the placement frame. The water pipe is a rigid pipe and is fixed to the side of the positioning plate. A drive assembly for driving the installation plate to move up and down is provided on the side of the placement frame.

[0006] As a preferred embodiment of the present invention, the driving assembly includes a screw rotatably mounted on the outside of the placement frame, a threaded cylinder fixed to the side of the mounting plate, the threaded cylinder being threadedly mounted on the outside of the screw, and a handle being mounted on the end of the screw.

[0007] As a preferred technical solution of this utility model, the water supply component includes a water pump group installed outside the cleaning tank, one end of the connecting pipe is connected to the water outlet end of the water pump group, and a water pumping pipe is provided at the water pumping end of the water pump group.

[0008] As a preferred embodiment of this utility model, a first valve is installed on the conveying pipe, and a second valve is installed on the connecting pipe, wherein the second valve is located between the conveying pipe and the water pipe.

[0009] As a preferred embodiment of this utility model, a flange is installed at the end of the connecting pipe away from the conveying pipe, and the connection between the conveying pipe and the connecting pipe is detachable.

[0010] As a preferred embodiment of the present invention, a drainage component is provided at the bottom of the cleaning tank. The drainage component includes a drain pipe installed on the lower side of the cleaning tank and communicating with the inner cavity of the cleaning tank, and a drain valve is installed on the drain pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The plate heat exchanger cleaning device of this utility model, when cleaning the plate heat exchanger, places the disassembled plate heat exchanger on a placement rack. The placement rack supports and limits the plate heat exchanger to prevent the plate heat exchanger from hitting the ultrasonic vibrating plate. The ultrasonic vibrating plate is controlled to work to generate high-frequency mechanical oscillations that are transmitted into the cleaning fluid for cleaning the plate heat exchanger.

[0012] 2. The cleaning device for plate heat exchangers in this utility model example injects cleaning fluid into the water pipe through the connecting pipe for cleaning the exterior of the plate heat exchanger. When the cleaning fluid is injected into the connecting pipe at the end of the delivery pipe through the connecting pipe, it is used for cleaning the interior of the plate heat exchanger. When cleaning the interior of the plate heat exchanger, the ultrasonic vibrating plate also plays a cleaning auxiliary role, ensuring the cleaning efficiency and cleaning effect of the plate heat exchanger.

[0013] 3. The plate heat exchanger cleaning device of this utility model uses an offline method to clean the plate heat exchanger. The offline method does not require disassembling the plate heat exchanger to clean the entire plate heat exchanger. The cleaning includes internal and external cleaning, which has high cleaning efficiency and quality, ensuring the heat exchange efficiency of the plate heat exchanger. Compared with disassembly cleaning, it can effectively reduce the labor intensity of personnel and facilitate the cleaning and use of plate heat exchangers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of the present invention after the placement rack has been removed; Figure 3This is a schematic diagram of the structure of the placement rack in this utility model; Figure 4 This is a side view of the placement rack in this utility model; Figure 5 This is a top view of the placement rack in this utility model.

[0015] In the diagram: 1. Cleaning tank, 2. Ultrasonic vibrating plate, 3. Placement rack, 4. Mounting plate, 5. Positioning plate, 6. Water pipe, 7. Nozzle, 8. Connecting pipe, 9. Water pump set, 10. Delivery pipe, 11. Connecting pipe, 12. First valve, 13. Second valve, 14. Threaded cylinder, 15. Screw, 16. Drain pipe, 17. Drain valve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a technical solution: a cleaning device for plate heat exchangers, including a cleaning tank 1 with an open top, a cleaning liquid in the cleaning tank 1, which includes, but is not limited to, acidic or alkaline cleaning agents, selected according to the dirt on the plate heat exchanger. An ultrasonic vibrating plate 2 is installed at the bottom of the inner cavity of the cleaning tank 1, and a placement rack 3 is installed in the cleaning tank 1. When cleaning the plate heat exchanger, the removed plate heat exchanger is placed on the placement rack 3. The placement rack 3 supports and limits the plate heat exchanger to prevent it from hitting the ultrasonic vibrating plate 2. The ultrasonic vibrating plate 2 is controlled to work and generate high-frequency mechanical oscillations that propagate into the cleaning liquid for cleaning the plate heat exchanger.

[0018] Both sides of the placement rack 3 are equipped with height-adjustable water pipes 6. Several nozzles 7 connected to the inner cavity of the water pipes 6 are installed along their length. A water supply assembly is installed outside the cleaning tank 1. The water supply assembly injects cleaning fluid into the water pipes 6. The cleaning fluid entering the water pipes 6 is sprayed out through the nozzles 7 for cleaning the outside of the plate heat exchanger. The rinsing process of the nozzles 7 occurs before the ultrasonic vibrating plate 2 is cleaned, when the cleaning fluid in the cleaning tank 1 is not full. It can also be used for the final rinsing and cleaning of the plate heat exchanger. When rinsing the plate heat exchanger through the nozzles 7 on the water pipes 6, the water pipes 6 can be adjusted up and down as needed.

[0019] The water supply assembly includes a connecting pipe 8 that communicates with the inner cavity of the water pipe 6. A delivery pipe 10 that communicates with the inner cavity of the connecting pipe 8 is installed on the connecting pipe 8. A connecting pipe 11 is provided at the end of the delivery pipe 10 and is connected to the plate heat exchanger. During the cleaning process of the plate heat exchanger, cleaning fluid is injected into the water pipe 6 through the connecting pipe 8 for cleaning the exterior of the plate heat exchanger. When cleaning fluid is injected into the connecting pipe 11 at the end of the delivery pipe 10 through the connecting pipe 8, it is used for cleaning the interior of the plate heat exchanger. When cleaning the interior of the plate heat exchanger, the ultrasonic vibrating plate 2 also plays a cleaning auxiliary role, ensuring the cleaning efficiency and cleaning effect of the plate heat exchanger.

[0020] An installation plate 4 is slidably mounted on the outside of the placement frame 3. Positioning plates 5 are fixed at both ends of the installation plate 4. The positioning plates 5 are snapped onto the outside of the placement frame 3. The water pipe 6 is a rigid pipe and is fixed to the side of the positioning plate 5. A drive assembly is provided on the side of the placement frame 3 to drive the installation plate 4 to move up and down. The drive assembly drives the installation plate 4 to move up and down on the side of the placement frame 3 for adjusting the height of the water pipe 6. During the movement of the installation plate 4, the positioning plate 5 is snapped onto the outside of the placement frame 3 and slides to limit and guide the movement of the installation plate 4, ensuring the stability of the installation plate 4 when it moves up and down.

[0021] The drive assembly includes a screw 15 rotatably mounted on the outside of the mounting bracket 3, and a threaded cylinder 14 fixed on the side of the mounting plate 4. The threaded cylinder 14 is threaded onto the outside of the screw 15, and a handle is installed at the end of the screw 15. By rotating the handle, the screw 15 rotates, and the screw 15 drives the threaded cylinder 14 to move the mounting plate 4 up and down, which facilitates the adjustment of the height of the water pipe 6. It should be noted that both the screw 15 and the threaded cylinder 14 are treated with corrosion resistance.

[0022] The water supply assembly includes a water pump group 9 installed outside the cleaning tank 1. One end of the connecting pipe 8 is connected to the outlet end of the water pump group 9. A water pumping pipe is provided at the water pumping end of the water pump group 9. When the cleaning fluid is delivered into the water pipe 6 or the connecting pipe 11, the water pump group 9 is controlled to work. The water pump group 9 draws the cleaning fluid from the outside through the water pumping pipe. The drawn cleaning fluid is injected into the water pipe 6 or the connecting pipe 11 through the connecting pipe 8, which facilitates the cleaning of the inside or outside of the plate heat exchanger.

[0023] A first valve 12 is installed on the delivery pipe 10, and a second valve 13 is installed on the connecting pipe 8. The second valve 13 is located between the delivery pipe 10 and the water pipe 6. After the first valve 12 is opened, the cleaning fluid in the connecting pipe 8 is delivered to the connecting pipe 11 through the delivery pipe 10. When it is not necessary to deliver the cleaning fluid to the connecting pipe 11, the first valve 12 can be closed. Correspondingly, after the second valve 13 is opened, the cleaning fluid in the connecting pipe 8 enters the water pipe 6. When it is not necessary to deliver the cleaning fluid to the water pipe 6, the second valve 13 can be closed.

[0024] A flange is installed at the end of the connecting pipe 11 away from the delivery pipe 10. The flange facilitates the connection of the connecting pipe 11 to the water inlet of the heat exchanger. The connection between the delivery pipe 10 and the connecting pipe 11 is detachable. The connecting pipe 11 can be replaced by disassembling it, which makes it convenient for this cleaning device to connect to different models of plate heat exchangers and clean their interiors.

[0025] The bottom of the cleaning tank 1 is equipped with a drainage component, which includes a drain pipe 16 installed on the lower side of the cleaning tank 1 and communicating with the inner cavity of the cleaning tank 1. A drain valve 17 is installed on the drain pipe 16. After the plate heat exchanger is cleaned, the cleaning liquid in the cleaning tank 1 is discharged through the drain pipe 16 by opening the drain valve 17. Alternatively, the cleaning liquid can be discharged through the drain pipe 16 to replace the cleaning liquid.

[0026] The ultrasonic transducer plate 2 and water pump group 9 used in this utility model are common electronic components in the prior art. Their working methods and circuit structures are known technologies. The operation of the ultrasonic transducer plate 2, water pump group 9 and other electronic components is controlled by setting a switch group or PLC controller outside the cleaning tank 1. This method is a common technical means used by technicians and will not be described in detail here.

[0027] This plate heat exchanger cleaning device uses an offline method to clean the plate heat exchanger. This offline method allows for overall cleaning of the plate heat exchanger without disassembling it. The cleaning includes both internal and external cleaning, resulting in high cleaning efficiency and quality, ensuring the heat exchange efficiency of the plate heat exchanger. Compared to disassembly cleaning, it effectively reduces the workload for personnel and facilitates the cleaning and use of the plate heat exchanger.

[0028] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for a plate heat exchanger, comprising a cleaning tank (1) with an open top, characterized in that: An ultrasonic transducer plate (2) is installed at the bottom of the inner cavity of the cleaning tank (1). A placement rack (3) is installed inside the cleaning tank (1). A height-adjustable water pipe (6) is installed on both sides of the placement rack (3). Several nozzles (7) communicating with the inner cavity are installed on the side of the water pipe (6) along its length. A water supply assembly is installed outside the cleaning tank (1). The water supply assembly includes a connecting pipe (8) communicating with the inner cavity of the water pipe (6). A delivery pipe (10) communicating with the inner cavity is installed on the connecting pipe (8). A connecting pipe (11) is installed at the end of the delivery pipe (10).

2. The cleaning device for plate heat exchangers according to claim 1, characterized in that: An installation plate (4) is slidably provided on the outside of the placement rack (3). Positioning plates (5) are fixed at both ends of the installation plate (4). The positioning plates (5) are snapped onto the outside of the placement rack (3). The water pipe (6) is a rigid pipe and is fixed on the side of the positioning plate (5). A drive assembly for driving the installation plate (4) to move up and down is provided on the side of the placement rack (3).

3. The cleaning device for plate heat exchangers according to claim 2, characterized in that: The drive assembly includes a screw (15) rotatably mounted on the outside of the placement frame (3), a threaded cylinder (14) fixed to the side of the mounting plate (4), the threaded cylinder (14) being threadedly mounted on the outside of the screw (15), and a handle being mounted on the end of the screw (15).

4. The cleaning device for plate heat exchangers according to claim 1, characterized in that: The water supply assembly includes a water pump group (9) installed outside the cleaning tank (1), one end of the connecting pipe (8) is connected to the water outlet of the water pump group (9), and a water pumping pipe is provided at the water pumping end of the water pump group (9).

5. The cleaning device for plate heat exchangers according to claim 1, characterized in that: A first valve (12) is installed on the delivery pipe (10), and a second valve (13) is installed on the connecting pipe (8). The second valve (13) is located between the delivery pipe (10) and the water pipe (6).

6. The cleaning device for plate heat exchangers according to claim 1, characterized in that: A flange is installed at the end of the connecting pipe (11) away from the conveying pipe (10), and the connection between the conveying pipe (10) and the connecting pipe (11) is detachable.

7. The cleaning device for plate heat exchangers according to claim 1, characterized in that: The bottom of the cleaning tank (1) is provided with a drainage assembly, which includes a drain pipe (16) installed on the lower side of the cleaning tank (1) and communicating with the inner cavity of the cleaning tank (1). A drain valve (17) is installed on the drain pipe (16).

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