Online reverse osmosis cleaning device

Abstract

The utility model discloses an on-line reverse osmosis cleaning device, aims to provide an on-line reverse osmosis cleaning device capable of effectively cleaning a reverse osmosis device, and adopts the technical scheme that the on-line reverse osmosis cleaning device comprises a raw water tank, a multi-medium filter is connected onto the raw water tank, a first security filter is connected onto the multi-medium filter, and a second security filter is connected onto the first security filter. The first security filter is connected with a reverse osmosis machine, an outlet of the reverse osmosis machine is also connected with a pure water tank, and the reverse osmosis machine is also provided with a cleaning device.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment, specifically to an online reverse osmosis cleaning device. Background Technology

[0002] As urbanization intensifies, industrial production becomes a crucial stage in addressing social needs and providing employment. High-tech industries, such as electronics and semiconductor manufacturing, require large quantities of ultrapure and pure water to meet production demands. The large-scale development and expansion of industry significantly increases freshwater consumption. Some say human resources are most important in the 21st century, others say air, land, and still others water. Water is the source of life, but with human development, usable freshwater resources are dwindling.

[0003] Currently, Chinese patent CN107597688B discloses an online diagnostic automated cleaning device for reverse osmosis of greywater and its application. The automated cleaning device includes an equipment section, a cleaning section, a chemical tank section, and a control section. Based on various parameter information of the equipment section, when different start-up conditions are met, the control section initiates the cleaning program under the corresponding conditions, thereby achieving scientific, reasonable, and efficient cleaning of the equipment section with the help of the cleaning section and the chemical tank section.

[0004] While this type of online diagnostic automated cleaning device for greywater reverse osmosis and its application connects the greywater reverse osmosis equipment with various sensors, probes, and monitors to achieve automated cleaning without manual operation, significantly improving efficiency compared to traditional cleaning methods and enabling more scientific and rational cleaning, thus extending the equipment's lifespan, industrial tap water is often used as the water source in the pure water and ultrapure water production processes of the semiconductor industry. The pure water separated by the primary reverse osmosis membrane enters the production and ultrapure water production stages. After prolonged operation, excessively high salt content on the concentrate side continuously causes fouling on the reverse osmosis membrane surface, leading to a decrease in the reverse osmosis system's water production and an increase in the conductivity of the produced water. Summary of the Invention

[0005] The purpose of this invention is to provide an online reverse osmosis cleaning device, which has the advantage of starting the cleaning device to clean the reverse osmosis membrane module online when the water production rate of the reverse osmosis system decreases by 15% or the conductivity increases by 15%. The device eliminates pollution and blockage by using chemical agents to clean, disinfect, and sterilize the reverse osmosis membrane, restoring it to its original operating state.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An online reverse osmosis cleaning device includes a raw water tank, a multi-media filter connected to the raw water tank, a first security filter connected to the multi-media filter, a reverse osmosis machine connected to the first security filter, a pure water tank connected to the outlet of the reverse osmosis machine, and a cleaning device on the reverse osmosis machine.

[0008] Further configuration: The outlet of the first security filter is also connected to a high-pressure pump, and the outlet of the high-pressure pump is connected to the reverse osmosis machine.

[0009] Further configuration: The cleaning device includes a second security filter connected to the inlet of the reverse osmosis unit, and the second security filter is connected to the outlet of the reverse osmosis unit.

[0010] Further configuration: A cleaning water tank is also connected between the second security filter and the reverse osmosis unit, and a cleaning water pump is provided at the outlet of the cleaning water tank, with the outlet of the cleaning water pump connected to the second security filter.

[0011] Further configuration: A booster pump is also provided between the raw water tank and the multi-filter media device.

[0012] Further feature: The outlet of the pure water tank is also equipped with a water supply pump.

[0013] Further configuration: The inlet of the second security filter is equipped with a cleaning side inlet valve, and the reverse osmosis unit and the second security filter are equipped with a cleaning side outlet valve.

[0014] Further features: The raw water tank, multi-media filter, first security filter, second security filter, reverse osmosis machine, cleaning water tank and pure water tank are all equipped with discharge ports.

[0015] In summary, this invention has the following beneficial effects: After prolonged operation, excessively high salt content on the concentrate side will continuously cause fouling on the reverse osmosis membrane surface, leading to a decrease in the permeate flow and an increase in the permeate conductivity. Therefore, it is necessary to install a conventional cleaning device in the reverse osmosis system. When the permeate flow rate decreases by 15% or the conductivity increases by 15%, the cleaning device is activated to perform online cleaning of the reverse osmosis membrane module. By adjusting the concentration of chemical agents, the reverse osmosis membrane is cleaned, disinfected, and sterilized to eliminate fouling and blockage, restoring it to its original operating state. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is an overall flow chart of an online reverse osmosis cleaning system;

[0018] In the diagram, 1. Raw water tank; 2. Multi-media filter; 3. First security filter; 4. Reverse osmosis machine; 5. Pure water tank; 6. Cleaning device; 61. Second security filter; 62. Cleaning water tank; 63. Cleaning water pump; 7. High-pressure pump; 8. Booster pump; 9. Water supply pump; 10. Cleaning side inlet valve; 11. Cleaning side outlet valve; 12. Discharge port. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0020] The technical solution adopted in this utility model is: an online reverse osmosis cleaning device 6, such as... Figure 1 As shown, it includes a raw water tank 1, a multi-media filter 2 connected to the raw water tank 1, a first security filter 3 connected to the multi-media filter 2, a reverse osmosis machine 4 connected to the first security filter 3, a high-pressure pump 7 connected to the outlet of the first security filter 3, the outlet of the high-pressure pump 7 connected to the reverse osmosis machine 4, a pure water tank 5 connected to the outlet of the reverse osmosis machine 4, and a water supply pump 9 installed at the outlet of the pure water tank 5.

[0021] The reverse osmosis unit 4 is also equipped with a cleaning device 6, which includes a second security filter 61 connected to the inlet of the reverse osmosis unit 4. The second security filter 61 is connected to the outlet of the reverse osmosis unit 4, and a cleaning water tank 62 is connected between the second security filter 61 and the reverse osmosis unit 4. A cleaning water pump 63 is provided at the outlet of the cleaning water tank 62, and the outlet of the cleaning water pump 63 is connected to the second security filter 61. A booster pump 8 is also provided between the raw water tank 1 and the multi-media filter. A cleaning-side inlet valve 10 is provided at the inlet of the second security filter 61, and a cleaning-side outlet valve 11 is provided between the reverse osmosis unit 4 and the second security filter 61. At the same time, discharge ports 12 are provided on the raw water tank 1, the multi-media filter 2, the first security filter 3, the second security filter 61, the reverse osmosis unit 4, the cleaning water tank 62, and the pure water tank 5.

[0022] Its main working principle is as follows: The main process for cleaning the reverse osmosis unit 4 is as follows: cleaning water tank 62 --- cleaning water pump 63 --- second security filter --- inlet of reverse osmosis unit 4 --- outlet of reverse osmosis unit 4 --- cleaning water tank 62 in sequence. The cleaning water tank 62 is generally set at 5 tons, and the material is PE, which is corrosion-resistant and acid and alkali-resistant. The cleaning water pump 63 provides the operating power, and the material is generally 316L, which is corrosion-resistant and acid and alkali-resistant. The head is about 25 meters, and the flow rate is generally 1.5 times the inlet water volume of the reverse osmosis unit. A surface flow meter is equipped at the outlet of the cleaning water pump 63 to observe the flux and cleaning effect. The second security filter 61 contains a 5-micron PP filter element, which is used to intercept the contaminants cleaned from the reverse osmosis unit 4, preventing the contaminants from re-entering the reverse osmosis unit 4. The material is generally 316L, which is corrosion-resistant and acid and alkali-resistant. Pressure gauges are installed at the inlet and outlet of the second security filter 61 to determine the clogging status of the internal filter element. When the pressure difference between the inlet and outlet is greater than 1 kg / cm², the filter is activated. 2 The internal filter element needs to be replaced periodically. During operation, the reverse osmosis unit 4 inlet has a reverse osmosis high-pressure pump outlet valve at the high-pressure pump 7 outlet. Close the reverse osmosis high-pressure pump outlet valve and open the cleaning side inlet valve 10 to allow cleaning agent water to enter the reverse osmosis unit 4 without affecting the high-pressure pump 7. At the reverse osmosis unit 4 outlet, close the reverse osmosis system concentrate valve and product water valve to prevent cleaning agent water from entering the product water tank and concentrate tank. Open the cleaning side outlet valve 11 to allow cleaning agent water to enter the cleaning water tank 62.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the utility model's technical solution.

Claims

1. An online reverse osmosis cleaning device, comprising a raw water tank (1), characterized in that: The raw water tank (1) is connected to a multi-media filter (2), the multi-media filter (2) is connected to a first security filter (3), the first security filter (3) is connected to a reverse osmosis machine (4), the outlet of the reverse osmosis machine (4) is also connected to a pure water tank (5), and the reverse osmosis machine (4) is also equipped with a cleaning device (6).

2. The online reverse osmosis cleaning device according to claim 1, characterized in that: The outlet of the first security filter (3) is also connected to a high-pressure pump (7), and the outlet of the high-pressure pump (7) is connected to the reverse osmosis machine (4).

3. The online reverse osmosis cleaning device according to claim 2, characterized in that: The cleaning device (6) includes a second security filter (61) connected to the inlet of the reverse osmosis machine (4) and the second security filter (61) connected to the outlet of the reverse osmosis machine (4).

4. The online reverse osmosis cleaning device according to claim 3, characterized in that: A cleaning water tank (62) is also connected between the second security filter (61) and the reverse osmosis machine (4). A cleaning water pump (63) is provided at the outlet of the cleaning water tank (62), and the outlet of the cleaning water pump (63) is connected to the second security filter (61).

5. An online reverse osmosis cleaning device according to claim 4, characterized in that: A booster pump (8) is also provided between the raw water tank (1) and the multi-filter media device.

6. The online reverse osmosis cleaning device according to claim 5, characterized in that: The outlet of the pure water tank (5) is also equipped with a water supply pump (9).

7. An online reverse osmosis cleaning device according to claim 6, characterized in that: The second security filter (61) is provided with a cleaning side inlet valve (10) at the inlet, and a cleaning side outlet valve (11) is provided between the reverse osmosis machine (4) and the second security filter (61).

8. An online reverse osmosis cleaning device according to claim 7, characterized in that: The raw water tank (1), multi-media filter (2), first security filter (3), second security filter (61), reverse osmosis machine (4), cleaning water tank (62) and pure water tank (5) are all equipped with discharge ports (12).

Images