A fluid circulation treatment system

Abstract

The utility model discloses a fluid circulation processing system, including fluid storage container, first fluid processing device, fluid storage container and first fluid processing device are communicated through first pipeline, and first fluid processing device is communicated with fluid storage container through second pipeline, is equipped with fluid export on second pipeline, and fluid export is installed with fluid supply pump through third pipeline. Circulate after processing fluid in the system, avoid the fluid that is handled and is pumped out system before contact with air, can guarantee the fluid quality that injects does not change with time elapses, set up fluid export after the export end of first fluid processing device, adopt fluid supply pump and introduce the fluid that is handled to the required device of fluid to be injected, reduced the possibility that metal parts and water injection valve sealing ring in the existing system multistage pollute fluid, guarantee the high purity of injection fluid.

Description

Technical Field

[0001] This utility model belongs to the field of fluid purification and treatment technology, and specifically relates to a fluid circulation treatment system. Background Technology

[0002] In some processes, fluids may contain impurities, microorganisms, or chemicals, requiring purification to meet production requirements. Common fluid purification methods include filtration, disinfection, and separation, ensuring the treated fluid meets specific parameter requirements before being introduced into the necessary equipment. Ultrapure water is used as an example. Ultrapure water is highly purified water, free of minerals, particles, bacteria, microorganisms, and dissolved gases. Due to its extremely high purity, ultrapure water is widely used in fields with stringent water quality requirements, such as semiconductor and microelectronics manufacturing, photovoltaic cells, lithium batteries, and optical devices.

[0003] In commercially available ultrapure water treatment processes, tap water or pre-filtered tap water is typically connected to a water purifier. The purifier processes the water to the required quality and then fills a pure water tank. The required amount of ultrapure water is then drawn from the tank and injected into the product through a valve. Because air is present in the pure water tank before the ultrapure water is injected, the resistivity of the ultrapure water decreases over time upon contact with air, affecting its quality. A common method is to use a breather to filter the air inside the tank, but this cannot guarantee complete filtration. While nitrogen isolation can ensure complete filtration, its cost is too high. Furthermore, during use, the ultrapure water comes into direct contact with metal components and the rubber seals in the injection valve, which can corrode and contaminate the ultrapure water over time.

[0004] Therefore, a fluid circulation processing system needs to be designed to solve the current technical problems. Summary of the Invention

[0005] To solve at least one of the above-mentioned technical problems, this utility model provides a fluid circulation processing system, including: a fluid storage container and a first fluid processing device; the first outlet end of the fluid storage container is connected to the first fluid processing device through a first pipe, the outlet end of the first fluid processing device is connected to the first inlet end of the fluid storage container through a second pipe, the second pipe is provided with a fluid outlet, and the fluid outlet is equipped with a fluid supply pump through a third pipe; The first fluid processing device draws fluid from the fluid storage container, purifies it, and obtains processed fluid. A portion of the processed fluid enters the fluid supply pump and is injected into the required device, while the other portion of the processed fluid returns to the fluid storage container for circulation.

[0006] The first fluid processing device draws fluid from the fluid storage container into it for processing to obtain fluid of the required quality. By continuously circulating the processed fluid, the degradation of the processed fluid quality over time can be significantly reduced. Since the fluid outlet is located within the circulation system and after the outlet of the first fluid processing device, the processed fluid can be isolated from the outside air to ensure the quality of the processed fluid.

[0007] Preferably, the fluid circulation processing system further includes a fluid buffer device installed on a second pipeline, the second pipeline including a first pipe and a second pipe, the first fluid processing device and the fluid buffer device being connected through the first pipe, and the fluid buffer device being connected to the fluid storage container through the second pipe.

[0008] The third pipeline and the fluid supply pump form a fluid injection channel. By setting up a fluid buffer device, sufficient fluid is stored to regulate the fluid pressure in the system. This avoids the risk of insufficient fluid injection flow in a single fluid injection channel due to too many fluid injection channels, improves fluid injection accuracy, and can greatly improve fluid injection efficiency.

[0009] Preferably, the fluid outlet is located between the inlet end and the outlet end of the fluid buffer device, and the outlet end of the fluid buffer device is connected to the second pipeline.

[0010] Preferably, a power pump is provided at the inlet end of the first fluid processing device, the first outlet end of the fluid storage container is connected to the power pump through a first pipe, and multiple third pipes and fluid supply pumps are provided.

[0011] Preferably, the fluid buffer device includes at least one buffer pipe, the inner diameter of which is larger than the inner diameter of the third pipe and the inner diameter of the second pipe.

[0012] Preferably, the fluid circulation processing system further includes a fluid detection device installed on the second pipeline. This device detects whether the processed fluid at the fluid outlet meets the injection conditions. If not, it automatically or manually controls the operation of the fluid supply pump to promptly stop injecting fluid into the desired device.

[0013] Preferably, at least one of the second pipe and the third pipe is equipped with a first fluid control valve, which is at least one of a flow stabilizing valve, a flow limiting valve, and a pressure reducing valve.

[0014] When the inlet pressure of the fluid supply pump is too high, the fluid flow rate at the outlet of the fluid supply pump will exceed the set fluid flow rate. Therefore, before injecting into the required device, it is necessary to adjust the pressure or limit the flow rate of the system to avoid affecting the accuracy of fluid flow injection.

[0015] Preferably, the fluid supply pump is a peristaltic pump, and the outlet end of the peristaltic pump is connected to the injection needle.

[0016] Because peristaltic pumps only allow fluid to pass through the flexible tubing during operation, avoiding direct contact with other unstable metal parts or rubber rings, and because the tubing is less prone to wear, prolonged use prevents fluid contamination due to corrosion or direct contact between multiple metal parts or rubber rings. Furthermore, the use of peristaltic pumps allows for adjustment of fluid flow rate, ensuring injection accuracy and guaranteeing that the injected fluid quality and flow rate meet requirements, thus ensuring the performance of the necessary equipment.

[0017] Preferably, the inlet end of the fluid storage container is connected to the fluid source via a fourth pipe.

[0018] Preferably, a second fluid processing device is installed on the fourth pipeline, the second fluid processing device including a filter.

[0019] Compared with existing technologies, the fluid circulation processing system provided by this utility model has the following advantages: It circulates the treated fluid within the system, preventing the treated fluid from contacting air before being pumped out of the system. This ensures that the quality of the injected fluid does not change over time, allowing the fluid to be injected into the desired device in its optimal state. By placing the fluid outlet after the outlet of the first fluid processing device and using a fluid supply pump to introduce the treated fluid into the desired device, it reduces the possibility of multi-stage contamination of the fluid by unstable metal components and water injection valve seals in existing systems, ensuring the high purity of the injected fluid.

[0020] The fluid buffer device serves as a temporary water storage device after purification treatment in the middle of the system. Extracting pure water from here can ensure the purity of the water. Attached Figure Description

[0021] Figure 1 A schematic diagram of the fluid circulation processing system provided by this utility model (I); Figure 2 Schematic diagram of the fluid circulation processing system provided by this utility model (II); Figure 3 A schematic diagram of the fluid circulation processing system provided by this utility model (III); Figure 4 A schematic diagram of the fluid circulation processing system provided by this utility model (IV); Figure 5 A schematic diagram (V) of the fluid circulation processing system provided by this utility model.

[0022] Figure label: 1. Fluid storage container; 2. First fluid processing device; 21. Power pump; 3. First pipeline; 4. Second pipeline; 41. First conduit; 42. Second conduit; 43. Third conduit; 5. Fluid outlet; 6. Third pipeline; 7. Fluid supply pump; 8. Fluid buffer device; 9. First fluid control valve; 10. Fluid detection device; 11. Fourth pipeline; 12. Fluid source; 13. Second fluid processing device; 14. Fifth pipeline; 15. Control unit; 16. Injection needle. Detailed Implementation

[0023] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0024] Example 1 This utility model adopts the following technical solution, such as Figure 1 As shown, a fluid circulation processing system can purify fluids such as gases and liquids, and is particularly suitable for the preparation of ultrapure water. The liquid before treatment is raw water or purified water, and the liquid after treatment is pure water or ultrapure water. The fluid circulation processing system includes: a fluid storage container 1 and a first fluid processing device 2; a power pump 21 is installed at the inlet end of the first fluid processing device 2 to change the fluid state by external power. The first outlet end of the fluid storage container 1 is connected to the power pump 21 of the first fluid processing device 2 through a first pipe 3, and the outlet end of the first fluid processing device 2 is connected to the first inlet end of the fluid storage container 1 through a second pipe 4. A fluid outlet 5 is provided on the second pipe 4, and a fluid supply pump 7 is installed at the fluid outlet 5 through a third pipe 6.

[0025] The first fluid processing device 2 and the fluid storage container 1 form a circulating fluid loop, so that the fluid is extracted from the fluid storage container 1 and purified (i.e., purified) to obtain the processed fluid. A portion of the processed fluid is injected into the required device from the fluid supply pump 7, and the other portion of the processed fluid is returned to the fluid storage container 1 for recirculation.

[0026] Fluid storage container 1 is used to store initial fluid and treated fluid. For example, the initial fluid is raw tap water (i.e., raw water) or filtered tap water (i.e., purified water), and the treated fluid is pure water / ultrapure water. Fluid storage container 1 is a pure water tank made of PE material. The second outlet end of fluid storage container 1 is provided with a fifth pipe 14. A second fluid control valve is installed on the fifth pipe 14 for discharging the stored raw water / purified water, or pure water / ultrapure water.

[0027] In theory, when fluid storage container 1 initially stores water, the quality of the initial water will affect the flow rate of pure water produced by the first fluid processing device 2. However, since the water in fluid storage container 1 is circulated, the pure water or ultrapure water is not taken from fluid storage container 1, but from fluid outlet 5 on the second pipe 4 near the outlet end of the first fluid processing device 2, which can ensure purity. In reality, the quality of the initial water has little impact on the flow rate of pure water or ultrapure water produced. Therefore, the selection of the quality of the initial water is not restricted and can be selected according to the needs.

[0028] To ensure the quality of the treated water, the first fluid treatment device 2 is always in a water treatment cycle. Generally, the fluid storage container 1 is equipped with a level sensor. When the level falls below the minimum set requirement, water is automatically added; when the level reaches the maximum set level, water injection stops. Before water is added to the fluid storage container 1, the fluid entering the first fluid treatment device 2 is initially initial water, and subsequently treated water, i.e., pure or ultrapure water, which further improves fluid treatment efficiency.

[0029] The first fluid treatment device 2 is a water purification device. Therefore, it is not necessary to install a separate water quality testing device at the outlet end of the first fluid treatment device 2 to test the quality of the treated water before injecting it into the required device. Since the water pressure between the fluid storage container 1 and the inlet end of the first fluid treatment device 2 is almost zero, the power pump 21 is a self-priming pump.

[0030] In this embodiment, the water purification device is a pure water generator or an ultrapure water generator, used to convert raw water or purified water into pure water or ultrapure water.

[0031] The outlet of the fluid supply pump 7 is the fluid injection point, i.e., the water injection point. The fluid supply pump 7 is a peristaltic pump, and its outlet is connected to the injection needle 16. The peristaltic pump ensures that its structure will not contaminate the treated water and can control the fluid flow rate. To prevent the injection needle 16 from contaminating the water, the injection needle 16 is made of stainless steel.

[0032] A first fluid control valve 9 is installed on the third pipeline 6. The first fluid control valve 9 is at least one of a flow stabilizing valve, a flow limiting valve, and a pressure reducing valve. In another embodiment, the first fluid control valve 9 is installed on the second pipeline 4.

[0033] Before the peristaltic pump operates, the water in the pipeline is always in a state of circulation to ensure optimal water quality, and theoretically, the risk of contamination during water injection is small. To avoid water quality degradation, the length of the third pipeline 6 can be minimized to reduce its water volume. Since the water in the fluid storage container 1 needs to be replenished after a period of time when it falls below the minimum set requirement, the water in the third pipeline 6 can be drained automatically or manually before water injection. This prevents the small amount of water that has not yet participated in the circulation from mixing with the new round of treated or circulating water, ensuring that only the new round of treated or circulating water enters the third pipeline 6, thus guaranteeing the consistency of the effluent purity.

[0034] Additionally, it includes a control unit 15 electrically connected to the power pump 21, peristaltic pump, first fluid control valve 9, and second fluid control valve, respectively. The control unit 15 uses a combination of manual control switch and electronic control switch / controller to control electronic equipment such as the power pump 21, peristaltic pump, and fluid control valve, to automatically or semi-automatically inject fluid into the required device and control the fluid flow rate, or to discharge fluid from the fluid storage container 1.

[0035] In this embodiment, the controller is a PLC controller, and the electronic control switch is a relay switch.

[0036] Example 2 The difference from Example 1 is that, as Figure 2 As shown, the fluid circulation processing system also includes a fluid detection device 10 installed on the second pipeline 4. This device detects whether the fluid treated at the downstream end of the fluid outlet meets the injection conditions. If not, the control unit 15 controls the peristaltic pump's operation to stop injecting fluid into the desired device.

[0037] The fluid detection device 10 is located between the fluid outlet 5 and the fluid storage container 1. The fluid detection device 10 is a water quality detector, which can control whether to inject water by monitoring the water quality parameters collected by the water quality detector. For example, when the water quality is lower than the set parameters, the user is prompted and water injection can no longer be performed.

[0038] In another embodiment, the fluid detection device 10 is disposed between the first fluid processing device 2 and the fluid outlet 5, which can prevent the processed fluid from being injected into the required device under the condition that the fluid has been contaminated before entering the peristaltic pump.

[0039] Example 3 The difference from Example 1 is that, as Figure 3As shown, multiple third pipes 6 and fluid supply pumps 7 are provided. The fluid circulation processing system also includes a fluid buffer device 8 installed on the second pipe 4. The fluid outlet 5 is located between the inlet and outlet of the fluid buffer device 8, and the fluid outlet 5 is located away from the inlet and outlet of the fluid buffer device 8. The second pipe 4 includes a first pipe 41 and a second pipe 42. The outlet of the fluid buffer device 8 is connected to the second pipe 42. The outlet of the first fluid processing device 2 is connected to the fluid buffer device 8 through the first pipe 41. The outlet of the fluid buffer device 8 is connected to the inlet of the fluid storage container 1 through the second pipe 42. The water production capacity of the water generator is much greater than the total water injection capacity of all third pipes 6, making it suitable for situations with small water injection volumes, especially for injecting water into small electronic devices such as sensors and batteries.

[0040] In this embodiment, two first fluid control valves 9 are provided. One first fluid control valve 9 is located on the second pipeline 42 between the fluid buffer device 8 and the fluid storage container 1, specifically as a flow stabilizing valve. The other first fluid control valve 9 is located on the third pipeline 6, specifically as a flow limiting valve or a pressure reducing valve. The unused, processed fluid sequentially passes through the fluid buffer device 8 and the flow stabilizing valve back to the fluid storage container 1. Because the fluid circulates in the system, the fluid detection device 10 continuously detects the fluid quality, further ensuring that the fluid quality does not deteriorate over time.

[0041] The fluid buffer device 8 includes at least one buffer pipe. The inner diameter of the buffer pipe is larger than the inner diameter of the third pipe 6 and the second pipe 42. The buffer pipe is used for temporary water storage and its shape can be a straight pipe, an arc pipe, a spiral pipe, or other shapes. The buffer pipe is adapted to the inlet of the peristaltic pump through pressure regulation and pipe diameter reduction. The buffer pipe has the function of storing a certain fluid flow rate and can be regarded as a sealed small storage container, eliminating the need for an external storage container. By setting up the buffer pipe to buffer the treated fluid, it ensures that a sufficient amount of treated fluid can be stored in the buffer pipe, avoiding insufficient injection flow or poor fluid pressure control at the injection points due to too many fluid injection channels formed by the third pipe 6 and the fluid supply pump 7, thus making the fluid injection flow rate more stable. It also avoids the problem of insufficient pumping volume due to the excessively large inner diameter of the second pipe 42, or the problem of uneven water distribution in the case of multi-channel water injection due to the excessively large inner diameter of the third pipe 6.

[0042] Example 4 The difference from Example 3 is that, as Figure 4As shown, the fluid circulation processing system also includes a fluid detection device 10 installed on the second pipeline 4, which is used to detect whether the treated fluid that has not been used at the fluid outlet meets the injection conditions. If it does not meet the conditions, the control unit 15 controls the working state of the peristaltic pump to stop injecting fluid into the required device.

[0043] The second pipeline 4 includes a first pipeline 41, a second pipeline 42, and a third pipeline 43. The outlet end of the first fluid processing device 2 is connected to the fluid buffer device 8 through the first pipeline 41. The outlet end of the fluid buffer device 8 is connected to the inlet end of the fluid detection device 10 through the second pipeline 42. The outlet end of the fluid detection device 10 is connected to the first inlet end of the fluid storage container 1 through the third pipeline 43.

[0044] Example 5 The difference from Example 4 is that, as Figure 5 As shown, the inlet of the fluid storage container 1 is also connected to the fluid source 12 via a fourth pipe 11 to supply fluid. A second fluid processing device 13 is installed on the fourth pipe 11, which includes a filter device to ensure that the fluid entering the fluid storage container 1 is clean water. In this embodiment, a first fluid control valve 9 is disposed on the second pipe 42 and located between the outlet of the fluid buffer device 8 and the fluid detection device 10.

[0045] The power pump 21, peristaltic pump, first fluid control valve 9, second fluid control valve, and fluid detection device 10 are electrically connected to the control unit 15. The control unit 15 controls the power pump 21, peristaltic pump, fluid control valve, and other electronic equipment according to the fluid parameters collected by the fluid detection device 10, so as to realize the automatic or semi-automatic injection of fluid into the required device.

[0046] Among them, the inner diameters of the first pipe 3, the first pipeline 41, the buffer pipe and the fourth pipe 11 are the same, and the inner diameters of the third pipe 6, the second pipeline 42 and the third pipeline 43 are the same.

[0047] The above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A fluid circulation processing system, characterized in that, include: A fluid storage container (1) and a first fluid processing device (2); the first outlet end of the fluid storage container (1) is connected to the first fluid processing device (2) through a first pipe (3), the outlet end of the first fluid processing device (2) is connected to the first inlet end of the fluid storage container (1) through a second pipe (4), a fluid outlet (5) is provided on the second pipe (4), and a fluid supply pump (7) is installed on the fluid outlet (5) through a third pipe (6); The first fluid processing device (2) extracts fluid from the fluid storage container (1) and purifies it to obtain processed fluid. Part of the processed fluid enters the fluid supply pump (7) and is injected into the required device, while the other part of the processed fluid returns to the fluid storage container (1) for circulation.

2. The fluid circulation processing system as described in claim 1, characterized in that: The fluid circulation processing system further includes a fluid buffer device (8) installed on a second pipe (4). The second pipe (4) includes a first pipe (41) and a second pipe (42). The first fluid processing device (2) and the fluid buffer device (8) are connected through the first pipe (41), and the fluid buffer device (8) is connected to the fluid storage container (1) through the second pipe (42).

3. The fluid circulation processing system as described in claim 2, characterized in that: The fluid outlet (5) is located between the inlet end and the outlet end of the fluid buffer device (8), and the outlet end of the fluid buffer device (8) is connected to the second pipeline (42).

4. The fluid circulation processing system as described in claim 1, characterized in that: The first fluid processing device (2) is equipped with a power pump (21) at its inlet end. The first outlet end of the fluid storage container (1) is connected to the power pump (21) through a first pipe (3). The third pipe (6) and the fluid supply pump (7) are provided in multiple ways.

5. The fluid circulation processing system as described in claim 2, characterized in that: The fluid buffer device (8) includes at least one buffer pipe, the inner diameter of which is greater than the inner diameter of the third pipe (6) and the inner diameter of the second pipe (42).

6. The fluid circulation processing system according to any one of claims 1-5, characterized in that: The fluid circulation processing system also includes a fluid detection device (10) installed on the second pipeline (4).

7. The fluid circulation processing system as described in claim 1, characterized in that: A first fluid control valve (9) is installed on at least one of the second pipe (4) and the third pipe (6), and the first fluid control valve (9) is at least one of a flow stabilizing valve, a flow limiting valve, and a pressure reducing valve.

8. The fluid circulation processing system according to any one of claims 1-5 and 7, characterized in that: The fluid supply pump (7) is a peristaltic pump, and the outlet end of the peristaltic pump is connected to the injection needle (16).

9. The fluid circulation processing system according to any one of claims 1-5 and 7, characterized in that: The inlet of the fluid storage container (1) is connected to the fluid source (12) through the fourth pipe (11).

10. The fluid circulation processing system as described in claim 9, characterized in that: A second fluid processing device (13) is installed on the fourth pipe (11), the second fluid processing device (13) including a filter device.

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