Disassembly-free pulse cleaning device for plate heat exchanger

Abstract

The utility model discloses a disassembly-free pulse cleaning device for a plate heat exchanger. The disassembly-free pulse cleaning device comprises a pulse cleaning module, a solution tank and an air compressor, the pulse cleaning module is connected with the air compressor; a liquid outlet of the pulse cleaning module is connected with the inlet end of the plate heat exchanger through a first metal hose; a first filter screen group and a second filter screen group which are used for filtering impurities are respectively mounted in the solution tank; the outlet end of the plate heat exchanger is connected with a second metal hose, the other end of the second metal hose is connected with a first filter screen set in the solution box, and the second filter screen set is connected with a liquid inlet of the pulse cleaning module through a third metal hose. According to the pulse cleaning device, the pulse cleaning module is arranged to generate a gas-water mixture to wash the plate sheets in the plate heat exchanger, calcium carbonate, rust and other mixed dirt attached to the plate sheets can be rapidly cleaned, the cleaning efficiency is improved, meanwhile, the plate heat exchanger and the pulse cleaning device are connected through the rapid connector, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger cleaning equipment, in particular to a disassembly-free pulse cleaning device for a plate heat exchanger. Background Art

[0002] When cleaning a plate heat exchanger, the existing plate heat exchanger cleaning device uses a horizontal circulation pump to circulate the cleaning solution to complete the cleaning of the heat exchanger. However, during the cleaning process, since the circulation pump operates at a constant speed at an industrial frequency, the cleaning solution flows relatively smoothly in the flow channel between the two plates. Flushing the heat exchanger with only a steady water flow cannot completely remove the mixed dirt of calcium carbonate and rust with strong adhesion, and cannot ensure that the flow channel between the two plates is completely unblocked. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a disassembly-free pulse cleaning device for a plate heat exchanger, which can clean mixed dirt such as calcium carbonate and rust attached to the plates, thereby improving the cleaning effect of the heat exchanger.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0005] The plate heat exchanger disassembly-free pulse cleaning device includes a pulse cleaning module, a solution tank, and an air compressor. The pulse cleaning module is connected to an AC power supply; the pulse cleaning module is connected to the air compressor through a PU air pipe; the liquid outlet of the pulse cleaning module is connected to the inlet end of the plate heat exchanger through a first metal hose, and a ball valve is provided on the first metal hose; a first filter group and a second filter group for filtering impurities are respectively installed in the solution tank; the outlet end of the plate heat exchanger is connected to the second metal hose through a reducing elbow, the other end of the second metal hose is connected to the first filter group in the solution tank, and the second filter group is connected to the liquid inlet of the pulse cleaning module through a third metal hose.

[0006] The above-mentioned plate heat exchanger non-disassembly pulse cleaning device, the pulse cleaning module includes a circulating water pump, a digital display pulse controller, and an air-water mixing pipeline, and the two ends of the air-water mixing pipeline are respectively connected to the third metal hose and the first metal hose; the circulating water pump is arranged on the third metal hose; the PU air pipe is connected to the third metal hose, and an electromagnetic pulse valve is provided on the air pipe, and the controlled end of the electromagnetic pulse valve is connected to the output end of the digital display pulse controller.

[0007] In the above-mentioned plate heat exchanger disassembly-free pulse cleaning device, the filter opening diameter of the first filter group is larger than the filter opening diameter of the second filter group.

[0008] The above-mentioned plate heat exchanger disassembly-free pulse cleaning device is provided with a liquid taking port on the solution tank for conveniently taking liquid for pH value detection and judging whether liquid replacement is required.

[0009] The above-mentioned plate heat exchanger disassembly-free pulse cleaning device is provided with an observation window for observing the liquid level.

[0010] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is as follows.

[0011] The utility model provides a disassembly-free pulse cleaning device for a plate heat exchanger. By arranging a pulse cleaning module, an air-water mixture is generated to flush the plates in the plate heat exchanger, so that mixed dirt such as calcium carbonate and rust attached to the plates can be quickly cleaned, thereby improving the cleaning efficiency. At the same time, the plate heat exchanger is connected to the pulse cleaning device through a quick connector, which is convenient for assembly and movement of the entire device. It is suitable for various places. The pH value is also detected so that the cleaning liquid can be added in time to avoid the weakening of the cleaning liquid effect during the circulation process.

[0012] The utility model also performs secondary filtration on the cleaning liquid in the circulation process by arranging two groups of filter mesh groups with different mesh opening diameters, thereby preventing impurities from participating in the circulation and causing pipeline blockage, thereby ensuring the purity of the cleaning liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the specific structure of the utility model.

[0014] Among them: 1. Plate heat exchanger, 2. Pulse cleaning module, 3. Solution tank, 4. Air compressor, 5. First metal hose, 6. Ball valve, 7. Second metal hose, 8. Reducing elbow, 9. First filter group, 10. Second filter group, 11. Third metal hose, 12. Air pipe. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Plate heat exchanger non-disassembly pulse cleaning device, such as Figure 1 As shown, it includes a pulse cleaning module 2, a solution tank 3, and an air compressor 4. The liquid outlet of the pulse cleaning module 2 is connected to the inlet end of the plate heat exchanger 1 through a first metal hose 5. A ball valve 6 is provided on the first metal hose 5. The outlet end of the plate heat exchanger 1 is connected to the second metal hose 7 through a reducing elbow 8.

[0017] The plate heat exchanger 1 is connected to the first metal hose 5 and the second metal hose 7 by quick connectors, which makes assembly and disassembly easy and facilitates the movement of the device.

[0018] The solution tank 3 is respectively equipped with a first filter group 9 and a second filter group 10 for filtering impurities. The other end of the second metal hose 7 is connected to the first filter group 9 in the solution tank 3, and the second filter group 10 is connected to the liquid inlet of the pulse cleaning module 2 through the third metal hose 11.

[0019] The diameter of the filter mesh opening of the first filter mesh group 9 is larger than the diameter of the filter mesh opening of the second filter mesh group 10. In this embodiment, the mesh opening size of the first filter mesh group 9 is φ200, and the mesh opening size of the second filter mesh group 10 is φ50. By setting up two filtrations, the impurities cleaned during the circulation process are filtered to prevent impurities from entering the circulation and causing pipeline blockage.

[0020] The pulse cleaning module includes a circulating water pump, a digital display pulse controller, and an air-water mixing pipeline. The pulse cleaning module 2 is connected to an AC power supply. The circulating water pump is arranged on the third metal hose 11. The two ends of the air-water mixing pipeline are respectively connected to the third metal hose 11 and the first metal hose 5.

[0021] The pulse cleaning module 2 is connected to the air compressor 4 through the PU air pipe 12, and the PU air pipe 12 is connected to the third metal hose 11. An electromagnetic pulse valve is provided on the air pipe 12, and the controlled end of the electromagnetic pulse valve is connected to the output end of the digital display pulse controller.

[0022] The solution tank 3 is provided with a liquid taking port for convenient liquid collection for pH value detection. During the cleaning process, the cleaning liquid is removed through the liquid taking port for solution pH value detection, and the data is recorded. If the pH value of the solution rises by a certain value compared to before cleaning, new cleaning liquid needs to be added to the solution tank.

[0023] The solution tank 3 is provided with an observation window for observing the liquid level. When adding cleaning liquid, the amount of cleaning liquid added can be controlled according to the liquid level in the solution tank to prevent the circulating water pump from idling due to lack of liquid in the solution tank.

[0024] When in use, first connect the outlet end of the first metal hose 5 to the inlet end of the plate heat exchanger through a quick connector, and connect the outlet end of the plate heat exchanger to the inlet end of the second metal hose 7 through a quick connector and a reducing elbow 8 to complete the connection between the pulse cleaning device and the plate heat exchanger.

[0025] Next, the cleaning solution in the solution tank is fed into the pulse cleaning module 2. At this time, a sample is taken from the sampling port to test the pH value of the initial solution for comparison later.

[0026] The air compressor delivers high-pressure gas to the pulse cleaning module 2 through the PU air pipe 12, and the solenoid pulse valve is controlled to open by the digital pulse controller. The high-pressure gas is mixed with the cleaning liquid to form an air-water mixture and sent into the air-water mixing pipeline. The mixture is sent into the plate heat exchanger through the air-water mixing pipeline and the first metal hose to clean the plates, and the cleaning liquid is controlled by the circulating water pump to circulate in the plate heat exchanger for 30-45 minutes.

[0027] During the circulation process, it is necessary to take samples from the liquid taking port multiple times, test and record the pH value of the cleaning liquid after the circulation cleaning. When the tested pH value is higher than the initial solution pH value by 3 values, new cleaning liquid needs to be added to the solution tank in time.

[0028] At the same time, during the circulation process, it is also necessary to observe the cleaning fluid level in time through the observation window to avoid the cleaning fluid being too low and causing the circulating water pump to run idle.

[0029] When it is detected that the pH value of the circulating cleaning fluid is stable, the machine can be shut down and the cleaning fluid in the plate heat exchanger and the cleaning device can be drained.

[0030] Finally, after the cleaning liquid is drained, rinse the plate heat exchanger again by adding tap water or softened water. At the same time, the pH value of the water needs to be sampled and tested during the cleaning process. When the pH value is consistent with the pH value of the water initially added, it proves that the equipment has been cleaned. Disconnect the first metal hose and the second metal hose from the plate heat exchanger.

[0031] The utility model provides a disassembly-free pulse cleaning device for a plate heat exchanger. By arranging a pulse cleaning module, an air-water mixture is generated to flush the plates in the plate heat exchanger, so that mixed dirt such as calcium carbonate and rust attached to the plates can be quickly cleaned, thereby improving the cleaning efficiency. At the same time, the plate heat exchanger is connected to the pulse cleaning device through a quick connector, which is convenient for assembly and movement of the entire device. It is suitable for various places. The pH value is also detected so that the cleaning liquid can be added in time to avoid the weakening of the cleaning liquid effect during the circulation process.

Claims

1. Plate heat exchanger non-disassembly pulse cleaning device, characterized by: The invention comprises a pulse cleaning module (2), a solution tank (3), and an air compressor (4), wherein the pulse cleaning module (2) is connected to an AC power supply; the pulse cleaning module (2) is connected to the air compressor (4) via a PU air pipe (12); the liquid outlet of the pulse cleaning module (2) is connected to the inlet end of the plate heat exchanger (1) via a first metal hose (5), and a ball valve (6) is provided on the first metal hose (5); a first filter group (9) and a second filter group (10) for filtering impurities are respectively installed in the solution tank (3); the outlet end of the plate heat exchanger (1) is connected to the second metal hose (7) via a reducing elbow (8), the other end of the second metal hose (7) is connected to the first filter group (9) in the solution tank (3), and the second filter group (10) is connected to the liquid inlet of the pulse cleaning module (2) via a third metal hose (11).

2. The plate heat exchanger non-disassembly pulse cleaning device according to claim 1 is characterized in that: The pulse cleaning module comprises a circulating water pump, a digital display pulse controller, and an air-water mixing pipeline, wherein the two ends of the air-water mixing pipeline are respectively connected to a third metal hose (11) and a first metal hose (5); the circulating water pump is arranged on the third metal hose (11); the PU air pipe (12) is connected to the third metal hose (11), and an electromagnetic pulse valve is arranged on the air pipe (12), and the controlled end of the electromagnetic pulse valve is connected to the output end of the digital display pulse controller.

3. The plate heat exchanger non-disassembly pulse cleaning device according to claim 1 is characterized in that: The diameter of the filter opening of the first filter mesh group (9) is greater than the diameter of the filter opening of the second filter mesh group (10).

4. The plate heat exchanger non-disassembly pulse cleaning device according to claim 1 is characterized in that: The solution box (3) is provided with a liquid taking port for taking liquid for pH value detection and determining whether liquid replacement is required.

5. The plate heat exchanger non-disassembly pulse cleaning device according to claim 1 is characterized in that: The solution tank (3) is provided with an observation window for observing the liquid level.

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