Automatic diluting device

Abstract

The utility model discloses an automatic dilution device, which relates to the technical field of dilution equipment and comprises a control chamber and a dilution chamber, a power supply and a controller are arranged in the control chamber, a stock solution box, a clear water box and a solution preparation box are arranged in the dilution chamber, the clear water box and the solution preparation box are both connected with a clear water peristaltic pump, and the clear water peristaltic pump is connected with a water pump. The stock solution box and the solution preparation box are both connected to a stock solution peristaltic pump, the stock solution box is provided with a stock solution inlet and an emptying port, the clear water box and the solution preparation box are provided with emptying ports and are connected with an emptying valve group, and the emptying valve group is connected to a sewage disposal three-way valve and is connected to an inlet and outlet assembly. And the clear water peristaltic pump and the stock solution peristaltic pump are connected to the controller. The utility model provides an automatic diluting device which is full-automatic, high-precision, efficient, safe and high in diluting precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to dilution equipment technical field, specifically related to an automatic dilution device. BACKGROUND

[0002] The accurate dilution refers to the process that a certain volume of solvent is added in a certain volume of stock solution to obtain an accurate target solution. Some use manual dilution method: professional chemical testing personnel use pipette, volumetric flask and other accurate measuring devices to accurately dilute the stock solution to the target solution. This process requires high operation level of the testing personnel, has many operation steps, consumes long time, needs manual calculation, and often leads to unsatisfactory accuracy and precision of the dilution result. Currently, the weight dilution method is mainly used on the market: the weight of the stock solution and the weight of the added solvent are displayed by using a balance, and after setting the dilution multiple, the dilution is carried out. When diluting high-concentration stock solution, manual dilution is mostly used, which has low automation degree, is troublesome to operate, and has poor repeated precision in multiple dilution. When diluting harmful liquid, it may harm the human body. SUMMARY

[0003] The technical problem to be solved by the utility model

[0004] The technical problem to be solved by the utility model is to provide an automatic dilution device, which can automatically and accurately dilute and prepare liquid with high efficiency and safety and high dilution precision.

[0005] TECHNICAL SCHEME

[0006] To solve the above problems, the technical scheme provided by the utility model is as follows:

[0007] An automatic dilution device comprises a control chamber and a dilution chamber, a power supply and a controller are arranged in the control chamber, a stock solution tank, a clean water tank and a liquid preparation tank are arranged in the dilution chamber, the clean water tank and the liquid preparation tank are connected to a clean water peristaltic pump, the stock solution tank and the liquid preparation tank are connected to a stock solution peristaltic pump, the stock solution tank is provided with a stock solution inlet and a emptying port, the clean water tank and the liquid preparation tank are provided with emptying ports and are connected to emptying valve groups, the emptying valve groups are connected to a clean and dirty three-way valve and are connected to an inlet and outlet assembly, and the clean water peristaltic pump and the stock solution peristaltic pump are connected to the controller.

[0008] The control chamber is provided with a power supply and a controller, which is responsible for the operation control of the entire device. The dilution chamber includes a stock solution tank, a clean water tank and a liquid preparation tank, which work together to complete the automatic dilution process. The stock solution tank is used to store the stock solution that needs to be diluted, and is provided with a stock solution inlet and a emptying port to facilitate the addition of stock solution and emptying operation. The clean water tank is used to store clean water for dilution, and is connected with the liquid preparation tank through a clean water peristaltic pump to ensure accurate delivery of clean water to the liquid preparation tank. The liquid preparation tank is used to receive liquid from the stock solution tank and the clean water tank for mixing and dilution. The clean water peristaltic pump and the stock solution peristaltic pump in the entire system are connected with the controller, thereby realizing accurate control of the liquid delivery amount, ensuring high precision and high efficiency of dilution, and ensuring the safety of operation.

[0009] As an option, the control chamber and the dilution chamber are surrounded by a box body, which is an integrated structure.

[0010] The integrated box body can provide better integrity and stability, helping to protect the internal components from external environmental factors such as dust, moisture, etc. Compared with a split design, the integrated box body tends to be more concise, beautiful and occupy less space, making it easier to install and place.

[0011] As an option, the box body is provided with universal wheels below and a box door.

[0012] The universal wheels below the box body make the entire device have good mobility. The box body is provided with a box door, which not only facilitates the maintenance and inspection of internal components, but also helps to protect the internal precision instruments from external environmental factors such as dust, moisture, etc.

[0013] As an option, the bottom surface of the dilution chamber is provided with a leakage hole.

[0014] If the liquid preparation, stock solution or clean water leaks accidentally, the leakage hole can ensure that these liquids do not accumulate inside the dilution chamber, but are guided to flow out, thereby reducing the risk of damage to the internal components of the device. When cleaning the device or handling small-scale leakage, the leakage hole provides a way to quickly drain residual liquid. This helps to simplify the cleaning process, keep the working environment clean, and facilitate daily maintenance. For some chemicals that may react with water or have corrosive properties, timely removal of leaked liquid can avoid potential safety hazards such as electrical short circuit or other dangerous situations.

[0015] As an option, the inlet and outlet assembly includes a total overflow port, a total sewage port, a total clean water port and a stock solution port, the total clean water port is connected to a clean water source, and the stock solution port is connected to a stock solution source.

[0016] Overflow port: used to handle excess liquid that may occur in the system, preventing leakage or damage caused by excessive liquid. When the amount of liquid in the system exceeds the set safety threshold, the excess liquid will be discharged through this port.

[0017] Drain port: used to discharge wastewater generated during system use or after cleaning the equipment. It ensures that the system can be thoroughly cleaned, avoiding cross-contamination between different batches of liquid.

[0018] Clean water inlet: connected to an external clean water source, providing the system with the required clean water. This interface ensures that a precise amount of clean water can be accurately delivered into the mixing tank for mixing with the stock solution to achieve the desired concentration of the solution.

[0019] Stock solution inlet: connected to an external stock solution source, providing the system with the stock solution that needs to be diluted. Through this interface, the stock solution can be accurately delivered into the mixing tank for mixing with clean water.

[0020] Optionally, the stock solution tank, clean water tank, and mixing tank are integrally formed and fixed to the inner wall of the dilution chamber, and a partition is provided between the stock solution tank, clean water tank, and mixing tank.

[0021] Integrally forming the stock solution tank, clean water tank, and mixing tank and fixing them to the inner wall of the dilution chamber can provide higher structural strength and stability, reducing the impact of vibrations generated during transportation or operation on the internal structure. At the same time, it also simplifies the installation process and reduces errors that may occur due to the assembly of multiple independent components. The partition between the stock solution tank, clean water tank, and mixing tank can effectively prevent cross-contamination between different liquids. The presence of the partition ensures that the liquid in each tank maintains its purity, which is particularly important for applications that require high-precision mixing. In addition, the partition can help optimize space utilization, making the design of the entire dilution chamber more compact and reasonable. Not only does it improve the durability and safety of the equipment, but it also ensures the accuracy of the operation. The integrally formed structure reduces potential leakage points and, through reasonable layout and partitioning, ensures that each liquid can be accurately processed. For users, such a design simplifies maintenance and provides more reliable performance, suitable for various applications that require strict control of liquid proportions.

[0022] Optionally, the stock solution tank, clean water tank, and mixing tank are provided with an overflow port on the upper side of the side surface.

[0023] When liquid is accidentally added in excess or the system fails, causing the liquid level to exceed the safety limit, the overflow port can ensure that the excess liquid is safely discharged instead of overflowing the container, thereby avoiding potential equipment damage or safety hazards.

[0024] Optionally, the control chamber is provided with a control door, and the control door is provided with a display screen.

[0025] The display screen is arranged on the control door, so that the user can directly perform various operations through the screen, such as setting the dilution ratio, monitoring the current working state, checking error information, and the like. This design makes the operation more intuitive and convenient, and most of the operation requirements can be completed without opening the control chamber. The display screen can display the working state of the system in real time, including but not limited to liquid flow, liquid level, working progress, and any possible warning or error information. This helps the user to understand the running condition of the system in time and make corresponding adjustments.

[0026] Advantages

[0027] Compared with the prior art, the technical scheme provided by the utility model has the following advantages:

[0028] The clean water peristaltic pump and the stock solution peristaltic pump in the whole system are connected with the controller, so that the precise control of the liquid delivery amount is realized, and the high precision and high efficiency of dilution are ensured. This design is very suitable for various laboratory or industrial application occasions that require high-precision dilution, which improves the working efficiency and ensures the safety of operation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A structural schematic view of an automatic dilution device is provided for an embodiment of the utility model;

[0030] Figure 2 A front view of an automatic dilution device is provided for an embodiment of the utility model;

[0031] Figure 3 A structural block diagram of an automatic dilution device is provided for an embodiment of the utility model;

[0032] 1, box; 101, box door; 2, control chamber; 201, control door; 202, display screen; 3, dilution chamber; 4, stock solution tank; 401, stock solution overflow port; 402, stock solution outlet; 5, clean water tank; 501, clean water overflow port; 502, clean water outlet; 6, liquid preparation tank; 601, liquid preparation overflow port; 602, clean water inlet; 603, stock solution inlet; 7, clean water peristaltic pump; 8, stock solution peristaltic pump; 9, sewage three-way valve; 10, inlet and outlet assembly; 1001, total overflow port; 1002, total sewage outlet; 1003, total clean water outlet; 1004, stock solution port; 11, leakage hole; 12, liquid inlet valve; 13, emptying valve group; 14, stock solution inlet; 15, emptying port. DETAILED DESCRIPTION

[0033] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings and embodiments.

[0034] Example

[0035] Combined with appendix Figure 1 An automatic dilution device includes a control chamber 2 and a dilution chamber 3. The control chamber 2 is equipped with a power supply and a controller. The dilution chamber 3 contains a stock solution tank 4, a clean water tank 5, and a dispensing tank 6. The control chamber 2 and the dilution chamber 3 are enclosed by a housing 1, which is a one-piece molded structure. The control chamber 2 is located above the dilution chamber 3, which can prevent liquid from the dilution chamber 3 from entering the control chamber 2, thus improving safety.

[0036] The housing 1 has four casters at the bottom and a door 101. The control room 2 has a control door 201 with a display screen 202. The door 101 and the control door 201 are rotatably connected to the housing 1 by a pin, forming a single-opening, flip-up door structure for easy maintenance and adjustment of internal components. The bottom surface of the dilution chamber 3 has a leakage hole 11, which is elongated and narrow. This hole prevents internal parts from falling out of the housing 1 while draining leaked liquid, and it provides a larger flow rate than ordinary small round holes, improving drainage efficiency.

[0037] Combined with appendix Figure 2 The inlet / outlet assembly 10 includes a main overflow port 1001, a main drain port 1002, a main clean water port 1003, and a raw liquid port 1004. The main clean water port 1003 is connected to a clean water source, and the raw liquid port 1004 is connected to a raw liquid source. The main overflow port 1001, main drain port 1002, main clean water port 1003, and raw liquid port 1004 are arranged side by side on the bottom side of the tank 1. The raw liquid port 1004 is connected to the inlet valve 12, which in turn connects to the raw liquid inlet 14 at the bottom of the raw liquid tank 4. The main drain port 1002 and the main clean water port 1003 are connected to a three-way valve 9, which is connected to a drain valve assembly 13. The drain valve assembly 13 is connected to three drain ports 15.

[0038] Overflow ports are provided on the upper side of the stock solution tank 4, the clear water tank 5, and the mixing tank 6. The three overflow ports are connected to a main overflow port 1001 via pipelines.

[0039] Combined with appendix Figure 2 , 3 The clean water tank 5 and the liquid mixing tank 6 are both connected to the clean water peristaltic pump 7. The liquid mixing tank 6 has a clean water inlet 602 below the overflow port, and the clean water tank 5 has a clean water outlet 502 on the bottom front. The clean water inlet 602 and the clean water outlet 502 are connected to the clean water peristaltic pump 7.

[0040] Both the stock solution tank 4 and the mixing tank 6 are connected to the stock solution peristaltic pump 8. The bottom front of the stock solution tank 4 is provided with a stock solution outlet 402. The mixing tank 6 is provided with a stock solution inlet 603 below the clean water inlet 602. The stock solution outlet 402 and the stock solution inlet 603 are connected to the stock solution peristaltic pump 8.

[0041] The stock solution tank 4 is provided with a stock solution inlet 14 and a drain 15, the clean water tank 5 and the solution preparation tank 6 are provided with a drain 15 and connected with a drain valve group 13, and the drains 15 are all located at the bottom.

[0042] The drain valve group 13 is connected with the clean-dirty three-way valve 9 and the inlet-outlet assembly 10,

[0043] The clean water peristaltic pump 7 and the stock solution peristaltic pump 8 are connected with the controller.

[0044] The stock solution tank 4, the clean water tank 5 and the solution preparation tank 6 are integrally formed and fixed to the inner wall of the dilution chamber 3, and a partition is arranged between the stock solution tank 4, the clean water tank 5 and the solution preparation tank 6. Liquid level gauges are arranged in the stock solution tank 4, the clean water tank 5 and the solution preparation tank 6 and connected with the controller.

[0045] The above-mentioned connections related to liquid are all pipe connections, and the pipes in the figure are straight lines.

[0046] Working principle:

[0047] Dilution steps: Step one: open the liquid inlet valve 12 first, and stop the liquid inlet when the liquid level height in the stock solution tank 4 reaches the set height of the stock solution tank 4 liquid level gauge; Step two: the clean-dirty three-way valve 9 is powered on and opened, clean water enters the clean-dirty three-way valve 9, the drain valve of the clean water tank 5 is opened, and the drain valve of the clean water tank 5 and the clean-dirty three-way valve 9 are closed when the liquid level height in the clean water tank 5 reaches the set height of the clean water tank 5; Step three: the stock solution peristaltic pump 8 is opened for 30 seconds and then closed, the clean water peristaltic pump 7 is opened for 30 seconds and then closed, and the drain valve of the solution preparation tank 6 is opened for 90 seconds, which washes the residual liquid in the pipe after the last solution preparation; Step four: set the solution preparation concentration and the required sample volume; Step five: start solution preparation, the stock solution peristaltic pump 8 works first, and the clean water peristaltic pump 7 works later, and the controller calculates the running time of each according to the solution preparation concentration and the solution preparation volume.

[0048] Automatic backwashing: the device is provided with an automatic backwashing function, and before each solution preparation, the system enters the automatic backwashing step, which mainly includes three steps: one, residual liquid drainage, two, backwashing, and three, backwashing drainage. The specific steps are as follows: Step one: drain the liquid in the stock solution tank 4 and the solution preparation tank 6 first, and then drain the liquid in the clean water tank 5, which can use clean water to flush the stock solution and sample liquid in the pipes of the stock solution tank 4 and the solution preparation tank 6. Step two: the clean-dirty three-way valve 9 is powered on and opened, clean water enters the clean-dirty three-way valve 9, and the drain valve group 13 is opened at the same time, the three tanks are filled with clean water, and the drain valve of the clean water tank 5 and the three-way valve are closed after reaching the position, and the system re-enters step one and enters the backwashing drainage.

[0049] The above describes the utility model and its embodiments in a schematic manner, and the description is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, and all should belong to the protection scope of the utility model.

Claims

1. An automatic dilution apparatus, characterized in that, The device comprises a control chamber and a dilution chamber, the control chamber is provided with a power supply and a controller, the dilution chamber is provided with a stock solution tank, a clean water tank and a liquid preparation tank, the clean water tank and the liquid preparation tank are connected to a clean water peristaltic pump, the stock solution tank and the liquid preparation tank are connected to a stock solution peristaltic pump, the stock solution tank is provided with a stock solution inlet and a emptying port, the clean water tank and the liquid preparation tank are provided with emptying ports and connected to emptying valve groups, the emptying valve groups are connected to a clean and dirty three-way valve and an inlet and outlet assembly, and the clean water peristaltic pump and the stock solution peristaltic pump are connected to the controller.

2. An automatic dilution apparatus according to claim 1, characterised in that The control chamber and the dilution chamber are covered with a box body which is an integral molding structure.

3. An automatic dilution apparatus according to claim 2, wherein Universal wheels are arranged below the box body, and the box body is provided with a box door.

4. An automatic dilution apparatus according to claim 3, wherein The bottom surface of the dilution chamber is provided with a leakage hole.

5. An automatic dilution apparatus according to claim 1, wherein The inlet and outlet assembly comprises a total overflow port, a total sewage port, a total clean water port and a stock solution port, the total clean water port is connected to a clean water source, and the stock solution port is connected to a stock solution source.

6. An automatic dilution apparatus according to claim 1, wherein The stock solution tank, the clean water tank and the liquid preparation tank are integrally molded and fixed to the inner wall of the dilution chamber, and a partition is arranged between the stock solution tank, the clean water tank and the liquid preparation tank.

7. An automatic dilution apparatus according to claim 6, characterised in that, Overflow ports are arranged on the upper part of the side surface of the stock solution tank, the clean water tank and the liquid preparation tank.

8. An automatic dilution apparatus as defined in claim 1, wherein The control chamber is provided with a control door which is provided with a display screen.

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