Ultrapure water preparation system

Abstract

The utility model relates to the technical field of ultrapure water systems, in particular to an ultrapure water preparation system. The ultrapure water preparation system comprises a water supply pipeline and at least one buffer tank, the water supply pipeline is used for outputting ultrapure water to be treated, a first liquid inlet is formed in the top of the buffer tank, the first liquid inlet is communicated with the water supply pipeline, a first valve is arranged at the first liquid inlet, a liquid outlet is formed in the bottom of the buffer tank, and a lifting pump is arranged at the liquid outlet. A filter is connected to the lifting pump, a second liquid inlet is further formed in the top of the buffer tank, a second valve is arranged at the second liquid inlet, the filter is communicated with the second valve, and the filter is further communicated with a use point. According to the utility model, the ultrapure water can be classified, so that the requirements of a plurality of use nodes are met.

Description

Technical Field

[0001] This utility model relates to the field of ultrapure water system technology, and more specifically, to an ultrapure water preparation system. Background Technology

[0002] Ultrapure water (UPW) refers to water produced through a series of processes such as deionization, reverse osmosis, ultraviolet light irradiation, and ultrafiltration. Its conductivity is usually below 0.1 µS / cm, making it suitable for industries such as electronics, pharmaceuticals, laboratories, and biotechnology.

[0003] As industries continue to upgrade, the requirements for ultrapure water quality are gradually increasing. Existing ultrapure water systems are designed for single purposes and cannot flexibly adapt to the specific requirements of various usage nodes. Utility Model Content

[0004] This invention provides an ultrapure water preparation system that can overcome some or all of the defects of the prior art.

[0005] The ultrapure water preparation system of this utility model includes a water supply pipeline for outputting water to be treated, and at least one buffer tank. A first inlet is formed at the top of the buffer tank and is connected to the water supply pipeline. A first valve is provided at the first inlet. An outlet is formed at the bottom of the buffer tank and is provided with a booster pump. A filter is connected to the booster pump. A second inlet is also provided at the top of the buffer tank and is provided with a second valve. The filter is connected to the second valve and is also connected to a point of use.

[0006] Preferably, a polishing mixing bed is connected between the booster pump and the filter.

[0007] Preferably, a TOC sterilization device is connected between the booster pump and the filter.

[0008] As a preferred embodiment, the booster pump is equipped with an inlet and an outlet, with a third valve at the inlet and a fourth valve at the outlet.

[0009] Preferably, a three-way pipe is provided on one side of the filter, which is connected to a first branch, a second branch and a third branch respectively. The first branch is connected to the filter, the second branch is connected to the second valve, and the third branch is connected to the point of use.

[0010] As a preferred option, a fifth valve is provided at the second branch.

[0011] As a preferred option, a sixth valve is provided at the third branch.

[0012] Preferably, an online instrument is installed between the filter and the tee pipe.

[0013] Beneficial effects:

[0014] This invention, by incorporating a buffer tank, enables multiple cycles of ultrapure water to be treated, thereby improving water quality while ensuring a continuous water supply at the point of use.

[0015] Furthermore, by performing multi-stage treatment on the water to be treated, the efficiency, stability, and safety of the water treatment system are ensured, significantly improving the purity and stability of the final water quality and meeting high-standard production requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an ultrapure water preparation system;

[0017] Figure 2 This is a schematic diagram of the structure at point 3;

[0018] Figure 3 This is a schematic diagram of the structure at point 2.

[0019] Figure 4 This is a schematic diagram of the structure at point 1. Detailed Implementation

[0020] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0021] Example 1

[0022] Seen in Figure 1 and 3 This embodiment provides an ultrapure water preparation system, which includes a water supply pipeline 1 for outputting ultrapure water to be treated, and a buffer tank 2. The top of the buffer tank 2 forms a first inlet 21, which is connected to the water supply pipeline 1. A first valve 211 is provided at the first inlet 21. The bottom of the buffer tank 2 forms an outlet 23, which is provided with a booster pump 3. A filter 4 is connected to the booster pump 3. The top of the buffer tank 2 also has a second inlet 22, which has a second valve 221. The filter 4 is connected to the second valve 221 and is also connected to the point of use 3.

[0023] Specifically, the first valve 211 is used to control the volume of ultrapure water to be treated entering the buffer tank 2, and the second valve 221 is used to control whether the treated ultrapure water at the filter 4 returns to the buffer tank 2 for repeated filtration, thus further improving the water quality. At the same time, the buffer tank 2 serves as a water storage tank, which can meet the continuous use of the point of use 3.

[0024] Understandably, filter 4 is a 0.1-micron filter.

[0025] The filter 4 has a three-way pipe 7 on one side, which is connected to a first branch 71, a second branch 72 and a third branch 73 respectively. The first branch 71 is connected to the filter 4, the second branch 72 is connected to the second valve 221 and the third branch 73 is connected to the point of use.

[0026] Specifically, the first branch 71 is used to connect the treated ultrapure water at the filter 4, which is then supplied to the point of use via the third branch 73, or returned to the buffer tank 2 via the second branch 72 for repeated treatment, thereby further reducing the impurity content and improving the quality of the treated ultrapure water.

[0027] Furthermore, a fifth valve 721 is installed at point 72 of the second branch road, and a sixth valve 731 is installed at point 73 of the third branch road.

[0028] Example 2

[0029] Seen in Figure 1 and 2 This embodiment provides an ultrapure water preparation system, which differs from the ultrapure water preparation system in Embodiment 1 in that a polishing mixed bed 5 is connected between the booster pump 3 and the filter 4.

[0030] The polishing mixed bed 5 removes the final impurities from the water, including various ions, dissolved organic carbon, and trace amounts of suspended solids, thus providing ultrapure water. The ultrapure water delivered by the booster pump 3 is treated by the polishing mixed bed 5. Through the mixing of cation and anion exchange resins, residual cations and anions in the ultrapure water are effectively exchanged and removed, reducing the conductivity of the ultrapure water and lowering the total organic carbon content, thereby significantly improving the water quality. After filtration by filter 4, treated ultrapure water is produced and can be used at point 2.

[0031] Example 3

[0032] Seen in Figure 1 and 4 This embodiment provides an ultrapure water preparation system, which differs from the ultrapure water preparation system in Embodiment 1 in that: a TOC sterilization device 6 and a polishing mixed bed 5 are sequentially provided between the booster pump 3 and the filter 4, and an online instrument 8 is provided between the filter 4 and the three-way pipe 7.

[0033] Specifically, the ultrapure water input by booster pump 3 first passes through TOC sterilization device 6, which effectively kills organic matter and bacteria in the water, reduces the total organic carbon (TOC) content, and ensures the biological stability of the water quality. The next polishing mixed bed 5 further removes residual ionic impurities in the water, such as cations like sodium, potassium, calcium, and magnesium, and anions like sulfate and chloride, making the water's conductivity and ion content extremely low, providing water with higher purity. Online instrument 8 is installed between filter 4 and three-way pipe 7, which can monitor key water quality indicators in real time, including particle content, silica content, and TOC content. This not only ensures the efficiency of water treatment but also enables timely detection and resolution of potential water quality problems. Filter 4 performs final filtration to ensure the quality of the final output water. The treated ultrapure water can be used at point 1.

[0034] This embodiment ensures the efficiency, stability, and safety of the water treatment system by performing multi-stage treatment on the ultrapure water to be treated, significantly improving the purity and stability of the final water quality, and enabling the treated ultrapure water to meet high-standard production requirements.

[0035] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0036] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An ultrapure water preparation system, characterized by, The device comprises a water supply pipeline for outputting the water to be treated, at least one buffer tank, a first liquid inlet formed at the top of the buffer tank, the first liquid inlet being communicated with the water supply pipeline, a first valve arranged at the first liquid inlet, a liquid outlet formed at the bottom of the buffer tank, a lifting pump arranged at the liquid outlet, a filter connected with the lifting pump, a second liquid inlet arranged at the top of the buffer tank, a second valve arranged at the second liquid inlet, the filter being communicated with the second valve, and the filter being further communicated with a use point.

2. The ultrapure water preparation system according to claim 1, wherein, A polishing mixed bed is connected between the lifting pump and the filter.

3. The ultrapure water preparation system according to claim 1 or 2, characterized by, A TOC sterilization device is connected between the lifting pump and the filter.

4. The ultrapure water preparation system according to claim 3, wherein The lifting pump is provided with a water inlet and a water outlet, a third valve is arranged at the water inlet, and a fourth valve is arranged at the water outlet.

5. The ultrapure water preparation system according to claim 1, wherein, A three-way pipeline is arranged at one side of the filter, the three-way pipeline is connected with a first branch, a second branch and a third branch, the first branch is connected with the filter, the second branch is connected with the second valve, and the third branch is connected with the use point.

6. The ultrapure water preparation system according to claim 5, wherein A fifth valve is arranged at the second branch.

7. The ultrapure water preparation system according to claim 5, wherein A sixth valve is arranged at the third branch.

8. The ultrapure water preparation system according to claim 5, wherein, An online instrument is arranged between the filter and the three-way pipeline.

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