Measuring system

Abstract

The utility model relates to the technical field of measurement, and discloses a measuring system which comprises a weighing device, a container, a liquid outlet device, an air blowing device and a control device. The container is arranged on the weighing device; the liquid outlet device is suitable for dripping a to-be-detected solution into the container, the weighing device is suitable for weighing the to-be-detected solution, and a solvent in the to-be-detected solution is a volatile solvent; an air outlet of the blowing device is suitable for blowing gas to the to-be-detected solution so as to volatilize the solvent; the control device is electrically connected with the weighing device, the liquid outlet device and the blowing device, and the liquid outlet device is suitable for controlling start and stop of the liquid outlet device and the blowing device and flow velocity of the container gas. According to the measuring system, by arranging the weighing device, the liquid outlet device and the air blowing device, automatic liquid outlet, air blowing and data collection are achieved, the labor intensity of workers is greatly reduced, the time of the measuring process is effectively shortened, and meanwhile the accuracy of measured data is improved.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and specifically to a measurement system. Background Technology

[0002] In the preparation or application of solid products, it is sometimes necessary to weigh the content of solid products in the system containing solid products (i.e., "solid content"). Solid content is an important indicator in the preparation or application of solid products and may have a significant impact on subsequent processes or application scenarios.

[0003] Traditional methods for measuring solid content involve dropping a fixed volume of solid product into a container of known mass and weighing the total weight. This is repeated periodically until the mass remains constant. The entire process requires patient operation, is repetitive and tedious, exposes personnel to organic solvents, is time-consuming, and can negatively impact data accuracy. For example, in systems containing quantum dot solids, in addition to the quantum dots, there are organic solvents such as hexane, toluene, and chloroform. Utility Model Content

[0004] In view of this, the present invention provides a measurement system to solve the problems of existing solid content testing methods that can only be performed manually, have long measurement times, and produce inaccurate data.

[0005] In a first aspect, a measurement system for measuring solid content includes:

[0006] Weighing device;

[0007] The container is mounted on the weighing device;

[0008] The dispensing device is adapted to drip the solution to be tested into the container, and the weighing device is adapted to weigh the solution to be tested, wherein the solvent in the solution to be tested is a volatile solvent;

[0009] A blowing device, wherein the outlet of the blowing device is adapted to blow gas onto the solution to be tested to cause the solvent to evaporate;

[0010] A control device is electrically connected to the weighing device, the liquid dispensing device, and the air blowing device, wherein the liquid dispensing device is adapted to control the start / stop and flow rate of the liquid dispensing device and the air blowing device.

[0011] Beneficial Effects: During measurement, the system first uses a control device to activate the dispensing device, allowing a certain amount of the test solution to drip into a container. A weighing device then measures the weight of the added solution. Next, a blowing device propels gas into the solution. This gas forms a protective layer around the solution, preventing component exchange with oxygen and water vapor, ensuring accurate measurement results. Furthermore, the blowing gas accelerates the evaporation of volatile solvents in the solution, speeding up the measurement process and effectively reducing measurement time. By incorporating a weighing device, dispensing device, and blowing device, this system automates dispensing, blowing, and data collection, significantly reducing manual labor, shortening measurement time, and improving the accuracy of the measurement data.

[0012] In one optional embodiment, the blowing device includes a gas storage section, a blowing pipe, and a mass flow controller. The gas storage section is adapted to store the gas. The inlet of the blowing pipe is connected to the gas storage section, and the outlet of the blowing pipe is located above the container. The mass flow controller is located on the blowing pipe and connected to the control device. The mass flow controller is adapted to control the flow rate of the gas.

[0013] Beneficial effects: The gas storage compartment stores gas for later use. The duration and flow rate of the blowing are controlled by a mass flow controller to ensure that the gas can effectively protect the solution to be tested, accelerate its evaporation, and prevent the solution to be tested from being blown out of the container, thereby ensuring the accuracy of the measurement results.

[0014] In one optional embodiment, the blowing device further includes a pressure reducing valve disposed between the blowing pipe and the gas storage section; and / or, the blowing device further includes a heating element disposed at the blowing port of the blowing pipe, the heating element being adapted to heat the gas. Gas storage section.

[0015] Beneficial effects: Since the gas storage section typically stores compressed gas, which has high pressure and can easily damage the mass flow controller, the pressure reducing valve reduces the pressure of the compressed gas before it enters the blowing pipe, ensuring the safety of the blowing pipe and the mass flow controller. The heating element heats the gas, and the high temperature accelerates the evaporation of the solution being tested, further improving measurement efficiency. Gas storage section

[0016] In one optional embodiment, the liquid dispensing device includes a first liquid storage section, a driving device, and a pipeline assembly. The first liquid storage section is used to store the solution to be tested. The inlet of the pipeline assembly is connected to the first liquid storage section. The outlet of the pipeline assembly is located at the container. The solution to be tested is adapted to drip into the container through the outlet. The driving device is adapted to drive the solution to be tested from the first liquid storage section into the pipeline assembly.

[0017] Beneficial effects: The first liquid storage section stores the solution to be tested. The solution to be tested is extracted from the first liquid storage section by a drive device, and the solution to be tested is dripped into the container through the pipeline assembly.

[0018] In one alternative embodiment, the piping assembly includes a first pipe, a second pipe, and a movable part. The first pipe is connected to the first liquid storage unit, one end of the second pipe is connected to the first pipe, and the other end of the second pipe forms the liquid outlet and is connected to the movable part. The movable part is adapted to adjust the position of the liquid outlet in the liquid storage unit container.

[0019] Beneficial effects: By connecting the second tube to the moving part, the second tube can be moved outside the container range by the moving part, which can prevent the remaining test solution in the second tube from dripping into the container under the action of gravity after the test solution has been dripped in, thus ensuring the accuracy of the measurement.

[0020] In one alternative embodiment, the moving part includes an adjusting component connected to the second tube, the adjusting component being adapted to move one end of the second tube to change the position of the liquid outlet.

[0021] Beneficial effects: By adjusting the component, the position of the end of the second tube that forms the liquid outlet can be changed, thereby enabling the test solution to be accurately dripped into the container. At the same time, after dripping, the position of the liquid outlet of the second tube can be changed to prevent excess test solution from dripping into the container, thus ensuring the accuracy of the measurement.

[0022] In one alternative embodiment, the second tube is made of a flexible material or is a telescopic tube; and / or, the measuring system further includes a waste liquid tank, and the moving part can drive the other end of the second tube to be located at the waste liquid tank to discharge liquid into the waste liquid tank.

[0023] Beneficial effects: The second tube, made of flexible material or a telescopic tube, can move with the moving part within its length range, making operation simple, quick, and easy. It can quickly change the position of the liquid outlet and reduce the difficulty of operation. Before cleaning the pipeline assembly, move the liquid outlet of the second tube to the waste liquid tank, and then open the solenoid valve to one end of the second liquid storage part. The wastewater from cleaning the pipeline assembly can be directly discharged into the waste liquid tank.

[0024] In one optional embodiment, the liquid dispensing device further includes a second liquid storage section and a solenoid valve. Both the first liquid storage section and the second liquid storage section are connected to the inlet of the pipeline assembly through the solenoid valve. The second liquid storage section is adapted to store cleaning solution. And / or the driving device is an HPLC pump.

[0025] Beneficial effects: The solenoid valve enables quick and easy control of the liquid drawn by the drive device; the cleaning fluid in the second reservoir can clean the pipeline components and remove the test solution remaining in the pipeline components for the next measurement; the HPLC pump can accurately control the flow rate to ensure the accuracy of the measurement.

[0026] In one alternative embodiment, both the solenoid valve and the drive device are electrically connected to the control device.

[0027] Beneficial effects: By controlling the opening and closing of the solenoid valve and drive device through the control device, the liquid dispensing device can automatically dispense liquid.

[0028] In one optional embodiment, the gas is nitrogen and the solution to be tested is a quantum dot solution.

[0029] Beneficial effects: Low cost, easy to obtain, and strong protective ability, effectively protecting quantum dot solutions. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a measurement system according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Weighing device;

[0034] 2. Container;

[0035] 3. Dispensing device; 31. First liquid storage unit; 32. Drive device; 33. Piping assembly; 331. First pipe; 332. Second pipe; 333. Moving part; 34. Second liquid storage unit; 35. Solenoid valve;

[0036] 4. Blowing device; 41. Gas storage unit; 42. Blowing pipe; 43. Mass flow controller; 44. Pressure reducing valve;

[0037] 5. Control device;

[0038] 6. Waste liquid tank. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] The following is combined with Figure 1 This describes an embodiment of the measurement system of this utility model.

[0041] According to an embodiment of the present invention, a measurement system for measuring solid content is provided, comprising a weighing device 1, a container 2, a liquid dispensing device 3, a blowing device 4, and a control device 5. The container 2 is mounted on the weighing device 1; the liquid dispensing device 3 is adapted to drip the solution to be tested into the container 2, the weighing device 1 is adapted to weigh the solution to be tested, and the solvent in the solution to be tested is a volatile solvent; the air outlet of the blowing device 4 is adapted to blow gas into the solution to be tested to cause the solvent to evaporate; the control device 5 is electrically connected to the weighing device 1, the liquid dispensing device 3, and the blowing device 4, and the liquid dispensing device 3 is adapted to control the start / stop and flow rate of the liquid dispensing device 3 and the blowing device 4.

[0042] This embodiment provides a measurement system in which, during measurement, the control device 5 first activates the liquid dispensing device 3 to drip a certain amount of the test solution into the container 2. The weighing device 1 weighs the dripped test solution. Then, the blowing device 4 blows gas into the test solution in the container 2. The gas forms a protective layer around the test solution, protecting it from component exchange with oxygen and water vapor, ensuring the accuracy of the measurement results. Furthermore, the blowing gas accelerates the evaporation of volatile solvents in the test solution, speeding up the measurement process and effectively reducing measurement time. This measurement system, by incorporating the weighing device 1, liquid dispensing device 3, and blowing device 4, achieves automated liquid dispensing, blowing, and data collection, significantly reducing manual labor intensity, effectively shortening the measurement process time, and improving the accuracy of the measurement data.

[0043] It should be noted that in this embodiment, the control device 5 is a computer. The above-mentioned automated measurement can be completed by programming in the computer using the standard graphical programming software LibVIEW. In other embodiments, other programming software can also be used. Automating the system through computer programming is a conventional technical means in this field, and the specific programming process will not be described in detail here.

[0044] In one embodiment, the measurement system is used to measure the solid content of cadmium selenide quantum dot products. In other embodiments, it can also be used to measure other quantum dot products. The solid content can be calculated by rapidly evaporating other liquid components in the quantum dot product using the blower 4.

[0045] In one embodiment, the blowing device 4 includes a gas storage section 41, a blowing pipe 42, and a mass flow controller 43. The gas storage section 41 is adapted to store gas. The inlet of the blowing pipe 42 is connected to the gas storage section 41, and the outlet of the blowing pipe 42 is located above the container 2. The mass flow controller 43 is located on the blowing pipe 42 and connected to the control device 5. The mass flow controller 43 is adapted to control the gas flow rate and blowing duration. The gas stored in the gas storage section 41 is reserved for later use. The mass flow controller 43 controls the blowing flow rate to ensure that the gas can effectively protect the solution to be tested, accelerate its evaporation, and prevent the solution to be tested from being blown out of the container 2, thereby ensuring the accuracy of the measurement results.

[0046] In one embodiment, the blowing device 4 further includes a pressure reducing valve 44 disposed between the blowing pipe 42 and the gas storage section 41; and / or, the blowing device 4 further includes a heating element disposed at the blowing port of the blowing pipe 42, the heating element being adapted to heat the gas. Since the gas storage section 41 typically stores compressed gas, which has a high pressure and can easily damage the mass flow controller 43, the pressure reducing valve 44 reduces the pressure of the compressed gas before it enters the blowing pipe 42, ensuring the safety of the blowing pipe 42 and the mass flow controller 43; the heating element can heat the gas, and the high-temperature gas can accelerate the evaporation of the solution to be tested, further improving the measurement efficiency.

[0047] The specific type of heating element is not limited here. In this embodiment, the heating element is a heating wire, but in other embodiments it can also be a heating rod, heating mesh, etc.

[0048] In one embodiment, the dispensing device 3 includes a first liquid storage section 31, a driving device 32, and a pipeline assembly 33. The first liquid storage section 31 is used to store the solution to be tested. The inlet of the pipeline assembly 33 is connected to the first liquid storage section 31, and the outlet of the pipeline assembly 33 is located at the container 2. The solution to be tested is adapted to drip into the container 2 through the outlet. The driving device 32 is adapted to drive the solution to be tested from the first liquid storage section 31 into the pipeline assembly 33. The first liquid storage section 31 stores the solution to be tested. By driving the driving device 32, the solution to be tested in the first liquid storage section 31 is extracted, so that the solution to be tested drips into the container 2 through the pipeline assembly 33.

[0049] In one embodiment, the drive device 32 is electrically connected to the control device 5, and the control device 5 controls the opening and closing of the drive device 32 and the rate of extraction of the solution to be tested.

[0050] In one embodiment, the piping assembly 33 includes a first pipe 331, a second pipe 332, and a moving part 333. The first pipe 331 is connected to the first liquid storage part 31. One end of the second pipe 332 is connected to the first pipe 331, and the other end of the second pipe 332 forms an outlet and is connected to the moving part 333. The moving part 333 is adapted to adjust the position of the outlet. By connecting the second pipe 332 to the moving part 333, the outlet of the second pipe 332 can be moved outside the container 2 via the moving part 333. This prevents the remaining test solution in the second pipe 332 from dripping into the container 2 during the measurement process under the influence of gravity after the test solution has been dripped in, ensuring the accuracy of the measurement.

[0051] In one embodiment, the moving part 333 includes an adjusting component connected to the second tube 332. The adjusting component is adapted to move one end of the second tube 332 to change the position of the outlet. By changing the position of the end of the second tube 332 that forms the outlet through the adjusting component, the solution to be tested can be accurately dripped into the container 2. At the same time, after dripping, the position of the outlet of the second tube 332 can be changed to prevent excess solution to be tested from dripping into the container 2, thus ensuring the accuracy of the measurement.

[0052] In one embodiment, the second tube 332 is made of a flexible material or is a telescopic tube; the measuring system also includes a waste liquid tank 6, and the moving part 333 can drive the other end of the second tube 332 to be located at the waste liquid tank 6 to discharge liquid into the waste liquid tank 6. The second tube 332, made of a flexible material or being a telescopic tube, can move with the moving part 333 within its length range, making operation simple, quick, and easy, and reducing the difficulty of operation by quickly changing the position of the outlet; before cleaning the pipeline assembly 33, the outlet of the second tube 332 is moved to the waste liquid tank 6, and then the solenoid valve 35 is opened to one end of the second liquid storage part 34, so that the wastewater from cleaning the pipeline assembly 33 can be directly discharged into the waste liquid tank 6.

[0053] In other embodiments, the second tube 322 can be any one of a flexible telescopic tube, a rigid telescopic tube assembly, or a flexible tube, or any other tube that can change the position of the liquid outlet.

[0054] In one embodiment, the adjusting component is a slide rail assembly. The track is fixed in position and arranged along the line connecting the container and the waste liquid tank. The slider is connected to the second tube, so that when the slider moves along the track, it can drive the end of the second tube that forms the liquid outlet to move between the container and the waste liquid tank. In other embodiments, the adjusting component can also be an electric push rod, hook and slide rod, cylinder, or other structure capable of moving the position of the liquid outlet of the second tube.

[0055] In one embodiment, the liquid dispensing device 3 further includes a second liquid storage section 34 and a solenoid valve 35. Both the first liquid storage section 31 and the second liquid storage section 34 are connected to the pipeline assembly 33 via the solenoid valve 35. The second liquid storage section 34 is adapted to store cleaning fluid; and / or, the driving device 32 is an HPLC pump. The solenoid valve 35 allows for quick and easy control of the liquid drawn by the driving device 32. The cleaning fluid in the second liquid storage section 34 can clean the pipeline assembly 33, removing the test solution remaining in the pipeline assembly 33 for use in the next measurement. The HPLC pump can precisely control the flow rate to ensure the accuracy of the measurement.

[0056] In other embodiments, the drive unit 32 may also employ other pumps capable of precisely controlling the flow rate.

[0057] In one embodiment of the liquid storage unit, both the solenoid valve 35 and the drive device 32 are electrically connected to the control device 5. The control device 5 controls the opening and closing of the solenoid valve 35 and the drive device 32 to achieve automated liquid dispensing from the liquid dispensing device 3.

[0058] In one embodiment, the solenoid valve 35 is a three-way solenoid valve 35, which is connected to the first liquid storage section 31, the second liquid storage section 34 and the pipeline assembly 33 respectively. In other embodiments, other types of solenoid valves 35 may be used according to measurement needs.

[0059] In one embodiment, the gas is nitrogen, and the solution to be tested is a quantum dot solution. Nitrogen is low in cost, readily available, and provides strong protection, effectively protecting the quantum dot solution.

[0060] In other embodiments, the gas may also be helium, argon, etc.

[0061] The general process of measuring the solid content of cadmium selenide products using the measurement system provided in this embodiment is as follows:

[0062] 1. Place an empty container 2: Place an empty disposable container 2 on the weighing device 1.

[0063] 2. Quantum dot product is filled in the pipeline assembly 33: The solenoid valve 35 is adjusted to the first liquid storage section 31. The moving part 333 slides the outlet of the second pipe 332 to the waste liquid tank 6. The cadmium selenide product is driven by the drive device 32 at a flow rate of A ml / min for a minutes. At this time, a small amount of the test solution flows out and drips into the waste liquid tank 6. Stop the operation.

[0064] 3. Injecting the test solution into container 2: Using the moving part 333, slide the outlet of the second tube 332 above container 2. The cadmium selenide quantum dot product is injected by the driving device 32 at a flow rate of B ml / min for b minutes, slowly dripping into disposable container 2 through the outlet. The control device 5 collects the weight data before and after the addition of the weighing container, which are W0 and W1, respectively. Bb .

[0065] 4. Waste liquid discharge and gas injection: Use the moving part 333 to slide the outlet of the second pipe 332 to the waste liquid tank 6. Adjust the solenoid valve 35 to one end of the second storage section 34. The cleaning liquid is injected by the driving device 32 at a flow rate of C ml / min for c minutes, and slowly enters the waste liquid tank 6 through the outlet. At this time, there is no residual test solution in the pipeline, ready for the next use. High-purity nitrogen is blown by the mass flow controller 43 through the blowing pipe 42 to the test solution at a flow rate of D ml / min, with a pressure of Eatm (standard atmospheric pressure), blowing towards the container 2 for d1 minutes. Stop blowing, and the control device 5 collects the weight data of the weighing device 1, the weight being W. d1 Blow gas into container 2 again for d2 minutes. Stop blowing gas, and control device 5 collects data from weighing device 1; the weight is W. d2 Repeat the blowing and weighing process n times until the function ABS{1-[W] is satisfied. dn / W d(n-1) If the solid content is less than 0.01, stop the measurement. The formula for calculating the solid content is (W dn -W0) / (W Bb -W0)*100%.

[0066] 5. Display Results: The display of control device 5 directly outputs the solid content value, and the output file saves and records all data.

[0067] 6. Remove container 2 containing the solution to be tested: Remove container 2 from the weighing device 1 and place a new container 2.

[0068] 7. After the process is complete, start from step 1 and repeat the process continuously.

[0069] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A measurement system for measuring solid content, characterized in that, include: Weighing device (1); Container (2) is placed on weighing device (1); The dispensing device (3) is adapted to drip the solution to be tested into the container (2), and the weighing device (1) is adapted to weigh the solution to be tested, wherein the solvent in the solution to be tested is a volatile solvent; A blowing device (4), the outlet of which is adapted to blow gas onto the solution to be tested to cause the solvent to evaporate; The control device (5) is electrically connected to the weighing device (1), the liquid outlet device (3) and the air blowing device (4), and the liquid outlet device (3) is adapted to control the start and stop and the flow rate of the liquid outlet device (3) and the air blowing device (4); The blowing device (4) includes a gas storage section (41), a blowing pipe (42), and a mass flow controller (43). The gas storage section (41) is adapted to store the gas. The air inlet of the blowing pipe (42) is connected to the gas storage section (41). The air outlet of the blowing pipe (42) is located above the container (2). The mass flow controller (43) is located on the blowing pipe (42) and connected to the control device (5). The mass flow controller (43) is adapted to control the flow rate of the gas. The liquid dispensing device (3) includes a first liquid storage section (31), a driving device (32), and a pipeline assembly (33). The first liquid storage section (31) is used to store the solution to be tested. The inlet of the pipeline assembly (33) is connected to the first liquid storage section (31). The outlet of the pipeline assembly (33) is located at the container (2). The solution to be tested is adapted to drip into the container (2) through the outlet. The driving device (32) is adapted to drive the solution to be tested from the first liquid storage section (31) into the pipeline assembly (33).

2. The measurement system according to claim 1, characterized in that, The blowing device (4) further includes a pressure reducing valve (44), which is disposed between the blowing pipe (42) and the gas storage section (41); and / or, the blowing device (4) further includes a heating element, which is disposed at the blowing port of the blowing pipe (42) and is adapted to heat the gas.

3. The measurement system according to claim 1, characterized in that, The pipeline assembly (33) includes a first pipe (331), a second pipe (332), and a moving part (333). The first pipe (331) is connected to the first liquid storage part (31). One end of the second pipe (332) is connected to the first pipe (331), and the other end of the second pipe (332) forms the liquid outlet and is connected to the moving part (333). The moving part (333) is adapted to adjust the position of the liquid outlet.

4. The measurement system according to claim 3, characterized in that, The moving part (333) includes an adjustment component connected to the second tube (332), and the adjustment component is adapted to move one end of the second tube (332) to change the position of the liquid outlet.

5. The measurement system according to claim 4, characterized in that, The second tube (332) is made of a flexible material or is a telescopic tube; and / or, the measuring system also includes a waste liquid tank (6), and the moving part (333) can drive the other end of the second tube (332) to be located at the waste liquid tank (6) to discharge liquid into the waste liquid tank (6).

6. The measurement system according to claim 1, characterized in that, The liquid outlet device (3) further includes a second liquid storage section (34) and a solenoid valve (35). The first liquid storage section (31) and the second liquid storage section (34) are both connected to the inlet of the pipeline assembly (33) through the solenoid valve (35). The second liquid storage section (34) is suitable for storing cleaning solution; and / or the driving device (32) is an HPLC pump.

7. The measurement system according to claim 6, characterized in that, Both the solenoid valve (35) and the drive device (32) are electrically connected to the control device (5).

8. The measurement system according to any one of claims 1-7, characterized in that, The gas is nitrogen, and the solution to be tested is a quantum dot solution.

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