An ultrapure water storage device

Abstract

The utility model relates to the technical field of ultrapure water storage, disclose a kind of ultrapure water storage device, including storage tank, multiple independent chambers are equipped in storage tank, ultrapure water can sequentially pass through the chamber connected with water injection pipe, remaining chamber, the chamber connected with drain pipe, chamber is equipped with pumping unit except the chamber connected with water injection pipe, pumping unit is used to control the ultrapure water in the extraction of previous adjacent chamber, further including controller, controller is used to control inlet valve, water valve opening and closing, pumping unit includes inlet pipe, inlet valve, water pump, liquid level sensor, outlet pipe, water valve, inlet pipe, outlet pipe one end is connected with liquid level sensor respectively, inlet pipe, outlet pipe other end is connected with inlet valve, water valve respectively, inlet pipe is communicated with last adjacent chamber, outlet pipe is located in chamber.The utility model can meet the use demand amount, store different batches of prepared ultrapure water, can make full use of prepared ultrapure water, reduce waste.

Description

Technical Field

[0001] This utility model relates to the field of ultrapure water storage technology, specifically to an ultrapure water storage device. Background Technology

[0002] Ultrapure water is highly reactive due to its extreme purity. During storage, it actively adsorbs metal ions (such as Fe³⁺ in stainless steel) from the inner wall of the container or organic matter (such as plasticizers) from plastics. At the same time, it rapidly absorbs CO2 from the air, causing the pH to drop and introducing carbonate ions. Microorganisms in the closed environment (such as Bacillus) may form a biofilm and multiply rapidly within 24 to 48 hours, which will accelerate the deterioration of water quality and lead to risks such as decreased resistivity, excessive particulate matter, and microbial contamination. Therefore, ultrapure water should be used within 24 hours.

[0003] In practical use, ultrapure water is often produced in excess of the required amount. For example, laboratory experiments are subject to uncertainty, and the sample size may be increased or the experimental plan adjusted temporarily. This requires the preparation of ultrapure water in multiple batches that exceed the original requirement. The prepared ultrapure water is stored together in a storage tank. However, if the prepared ultrapure water is not used up and is stored in a conventional storage tank, the storage time of the first batch of prepared ultrapure water may expire, resulting in all the unused ultrapure water being disposed of and wasted. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an ultrapure water storage device that can meet the usage demand, store ultrapure water prepared in different batches, make full use of the prepared ultrapure water, reduce waste, and save costs.

[0005] The technical solution adopted by this utility model is as follows: an ultrapure water storage device, including a storage tank, the storage tank is provided with multiple independent chambers, ultrapure water can pass through the chamber connected to the water injection pipe, the remaining chambers, and the chamber connected to the drain pipe in sequence, and each chamber except the chamber connected to the water injection pipe is provided with a water pumping component, which is used to control the extraction of ultrapure water from the previous adjacent chamber.

[0006] Explanation: The water injection pipe is where the prepared ultrapure water enters the storage tank. Multiple chambers are named Chamber 1, Chamber 2, ..., Chamber N. Chamber N is connected to the drain pipe, which is equipped with a valve. The drain pipe and valve work together to drain the ultrapure water from Chamber N into the storage tank for later use.

[0007] The principle of the technical solution: The first batch of ultrapure water is introduced into the first chamber through the water injection pipe. All pumping components are activated to extract the first batch of ultrapure water into the Nth chamber. The second batch of ultrapure water is introduced into the first chamber through the water injection pipe. Except for the pumping components in the Nth chamber, all other pumping components are activated to extract the second batch of ultrapure water into the N-1th chamber. The above operation is repeated to store the ultrapure water prepared at different times in separate zones.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention allows for the storage of ultrapure water while maintaining the original single water inlet and outlet pipes, eliminating the need for separate pipes in each chamber and saving space. The storage tank contains multiple independent chambers, and a pumping assembly can draw ultrapure water from one chamber to the next. These multiple chambers work together to store sufficient ultrapure water to meet usage requirements. The ultrapure water is stored according to its preparation completion time, prioritizing the use of the earliest prepared ultrapure water. Compared to traditional storage tanks where multiple preparations are stored together, and the remaining ultrapure water is processed based on its expiration date, this invention extends storage time, preventing insufficient or excessive water use and ensuring that all ultrapure water is replaced before its expiration date. This maximizes the use of ultrapure water, reduces waste, and saves costs.

[0009] In a preferred embodiment of this utility model, a controller is also included. The controller is used to control the opening and closing of the inlet valve and the outlet valve. The pumping assembly includes an inlet pipe, an inlet valve, a water pump, a level sensor, an outlet pipe, and an outlet valve. One end of the inlet pipe and the outlet pipe are respectively connected to the level sensor, and the other end of the inlet pipe and the outlet pipe are respectively connected to the inlet valve and the outlet valve. The water pump is installed on the inlet pipe and is located between the inlet pipe and the level sensor. The inlet pipe is connected to the previous adjacent chamber, and the outlet pipe is located in the chamber. The level sensor is used to detect the water level in the chamber and transmit the detected water level information to the controller. When the controller receives water level information from the level sensor that is lower than the preset threshold, the controller controls the inlet valve and outlet valve to open. When the controller receives water level information from the level sensor that is equal to the preset threshold, the controller controls the inlet valve and outlet valve to close.

[0010] Beneficial effects: The combination of inlet pipe, inlet valve, water pump, liquid level sensor, outlet pipe, and outlet valve can extract ultrapure water from the previous adjacent chamber into the chamber, thereby storing the batch-prepared ultrapure water in separate zones and extending the overall storage time.

[0011] In a preferred embodiment of this utility model, the outer walls of the inlet end of the water inlet pipe and the outlet end of the water outlet pipe are both in contact with the inner surface of the bottom of the storage tank.

[0012] Beneficial effects: The outer wall of the inlet end of the water inlet pipe is in close contact with the inner surface of the bottom of the storage tank, which can fully draw ultrapure water from the adjacent chamber into the chamber. The outer wall of the outlet end of the water outlet pipe is in close contact with the inner surface of the bottom of the storage tank, which can prevent ultrapure water from splashing, avoid sufficient contact between ultrapure water and air, and slow down the rate of decline in ultrapure water quality.

[0013] In a preferred embodiment of the present invention, the pumping assembly further includes a motor, a lead screw, and a slider. The motor is connected to the storage tank, the motor is connected to the lead screw, the lead screw and the slider are in sliding engagement, the slider is connected to the liquid level sensor, and the controller is also used to control the start and stop of the motor.

[0014] Beneficial effects: The motor, lead screw, and slider work together to adjust the height of the liquid level sensor. For example, a single chamber in a storage tank can store 100L, but the amount needed at one time is 50L. Compared to storing 100L of ultrapure water, the ultrapure water level drops, so the height of the liquid level sensor needs to drop as well, so that the ultrapure water can be detected in time and the corresponding amount of ultrapure water can be extracted.

[0015] In a preferred embodiment of this utility model, the pumping assembly further includes a support box located inside the storage tank and fitted against the inner wall of the storage tank. The motor is connected to the top inner surface of the support box. A strip-shaped hole is provided on the outer side of the support box. A slider passes through the strip-shaped hole and slides in cooperation with the outer side of the support box. The slider slides in cooperation with the strip-shaped hole. The ends of the inlet pipe and the outlet pipe away from the liquid level sensor are both connected to the storage tank.

[0016] Explanation: Both the motor and the lead screw are sealed with silicone for waterproofing.

[0017] Beneficial effects: The support box can provide support for the motor, the support box can provide support and guidance for the slider, and the slider can drive the liquid level sensor to move up and down.

[0018] In a preferred embodiment of this utility model, a retractable shielding part is connected between the opposite face of the slider away from the inner wall of the strip hole and the strip hole, and the shielding part is used to prevent ultrapure water in the chamber from entering the support box.

[0019] Beneficial effects: The two shielding parts are retractable, allowing the slider to move up and down. The two shielding parts work together to prevent ultrapure water from entering the support box and reduce the impact of the motor and lead screw on the ultrapure water. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the ultrapure water storage device of this utility model; Figure 2 This is a partial structural schematic diagram of the ultrapure water storage device of this utility model; Figure 3 This is a partial structural diagram of the ultrapure water storage device of this utility model from another angle. Detailed Implementation

[0021] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0022] In the description of this application, the terms "first," "second," "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] The reference numerals in the attached drawings include: storage tank 1, chamber 2, water inlet pipe 301, liquid level sensor 302, water outlet pipe 303, slider 304, support box 305, and strip hole 306.

[0025] Ultrapure water storage devices, such as Figure 1 As shown, it includes a storage tank 1 and a controller. The storage tank 1 is provided with multiple independent chambers 2. Ultrapure water can pass through the chamber 2 connected to the water injection pipe, the other chambers 2, and the chamber 2 connected to the drain pipe in sequence. Except for the chamber connected to the water injection pipe, each of the chambers 2 is provided with a water pumping assembly. The water pumping assembly is used to control the extraction of ultrapure water from the previous adjacent chamber 2.

[0026] In this embodiment, the storage box 1 is provided with a water inlet and a box cover. The water inlet is blocked by the box cover, and the box cover is threadedly connected to the storage box 1.

[0027] The pumping assembly includes an inlet pipe 301, an inlet valve, a water pump, a level sensor 302, an outlet pipe 303, an outlet valve, a motor, a lead screw and a slider 304, and a support box 305.

[0028] The motor is connected to storage box 1, and the motor is connected to the lead screw, as shown below. Figure 2 , 3 As shown, the lead screw and slider 304 are slidably engaged. The slider 304 is connected to the liquid level sensor 302. In this embodiment, the support box 305 is located inside the storage box 1 and is attached to the inner wall of the storage box 1. The motor is connected to the top inner surface of the support box 305. The outer side of the support box 305 is provided with a strip hole 306. The slider 304 passes through the strip hole 306 and is slidably engaged with the outer side of the support box 305. The slider 304 is slidably engaged with the strip hole 306.

[0029] The slider 304 has a retractable shielding part connected to the inner wall of the strip hole 306 on one of its opposite sides away from the strip hole 306. The shielding part is used to prevent ultrapure water in the chamber 2 from entering the support box 305.

[0030] One end of the inlet pipe 301 and the outlet pipe 303 are respectively connected to the liquid level sensor 302, and the other end of the inlet pipe 301 and the outlet pipe 303 are respectively connected to the inlet valve and the outlet valve. The inlet pipe 301 is connected to the previous adjacent chamber 2, and the outlet pipe 303 is located in the chamber 2. The liquid level sensor 302 is used to detect the water level in the chamber 2 and transmit the detected water level information to the controller.

[0031] In this embodiment, the water pump is installed on the water inlet pipe 301, and the water pump is located between the water inlet pipe 301 and the liquid level sensor 302.

[0032] The ends of the inlet pipe 301 and the outlet pipe 303 that are away from the liquid level sensor 302 are both connected to the storage tank 1. In this embodiment, the outer walls of the inlet end of the inlet pipe 301 and the outlet end of the outlet pipe 303 are both in contact with the inner surface of the bottom of the storage tank 1.

[0033] The controller is used to control the opening and closing of the inlet valve, water pump, and outlet valve, as well as the start and stop of the motor. When the controller receives water level information transmitted by the level sensor 302 that is lower than the preset threshold, the controller controls the water pump, inlet valve, and outlet valve to open. When the controller receives water level information transmitted by the level sensor 302 that is equal to the preset threshold, the controller controls the water pump, inlet valve, and outlet valve to close.

[0034] In this embodiment, the liquid level sensor is a photoelectric liquid level sensor LLC200D3SH. The controller and the liquid level sensor are wirelessly connected. The liquid level sensor converts the collected liquid level data into digital signals through a built-in wireless communication module (such as LoRa) and sends them to the controller in real time. After receiving the signal, the controller analyzes and processes it, and automatically triggers control commands (such as turning on / off the water pump or valve) according to a preset threshold.

[0035] In this embodiment, the controller is wirelessly connected to the water pump, inlet valve, and outlet valve. The controller model is UNO-2372G industrial wireless controller, the water pump model is CHL4-4, and the inlet or outlet valve model is FC200 solenoid valve (DN25, 24VDC).

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An ultrapure water storage device, comprising a storage tank, characterized in that: The storage tank has multiple independent chambers. Ultrapure water can pass through the chamber connected to the water injection pipe, the other chambers, and the chamber connected to the drain pipe in sequence. Except for the chamber connected to the water injection pipe, each chamber is equipped with a water pumping assembly, which is used to control the extraction of ultrapure water from the previous adjacent chamber.

2. The ultrapure water storage device according to claim 1, characterized in that: It also includes a controller for controlling the opening and closing of the inlet valve and the outlet valve. The pumping assembly includes an inlet pipe, an inlet valve, a water pump, a level sensor, an outlet pipe, and an outlet valve. One end of the inlet pipe and the outlet pipe are respectively connected to the level sensor, and the other end of the inlet pipe and the outlet pipe are respectively connected to the inlet valve and the outlet valve. The water pump is installed on the inlet pipe and is located between the inlet pipe and the level sensor. The inlet pipe is connected to the previous adjacent chamber, and the outlet pipe is located in the chamber. The level sensor is used to detect the water level in the chamber and transmit the detected water level information to the controller. When the controller receives water level information from the level sensor that is lower than the preset threshold, the controller controls the inlet valve and outlet valve to open. When the controller receives water level information from the level sensor that is equal to the preset threshold, the controller controls the inlet valve and outlet valve to close.

3. The ultrapure water storage device according to claim 2, characterized in that: The outer walls of both the inlet end of the water inlet pipe and the outlet end of the water outlet pipe are in contact with the inner surface of the bottom of the storage tank.

4. The ultrapure water storage device according to claim 2, characterized in that: The pumping assembly also includes a motor, a lead screw, and a slider. The motor is connected to the storage tank, the motor is connected to the lead screw, the lead screw and the slider are in sliding engagement, the slider is connected to the liquid level sensor, and the controller is also used to control the start and stop of the motor.

5. The ultrapure water storage device according to claim 4, characterized in that: The pumping assembly also includes a support box located inside the storage tank and attached to the inner wall of the storage tank. The motor is connected to the top inner surface of the support box. The outer side of the support box has a strip-shaped hole. The slider passes through the strip-shaped hole and slides in cooperation with the outer side of the support box. The slider slides in cooperation with the strip-shaped hole. The ends of the inlet pipe and the outlet pipe away from the liquid level sensor are both connected to the storage tank.

6. The ultrapure water storage device according to claim 5, characterized in that: The slider has retractable shielding parts connected to the inner wall of the strip hole on opposite sides away from the strip hole. The shielding parts are used to prevent ultrapure water in the chamber from entering the support box.

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