Device and method for detecting ultra-low concentration solid impurities in aqueous solutions

Abstract

The present invention relates to the technical field of particle detection, and discloses a device and method for detecting ultra-low concentration solid impurities in an aqueous solution, comprising a first trough body, in which a liquid to be detected is arranged; a power supply is electrically connected to an electrophoresis electrode and an auxiliary electrode, the electrophoresis electrode and the auxiliary electrode are both arranged in the liquid to be detected, and there is a gap between the electrophoresis electrode and the auxiliary electrode, an electric field is constructed in the gap, and solid impurity particles in the liquid to be detected in the electric field move toward the electrophoresis electrode; a detection unit is used to obtain solid impurity particle concentration data around the electrophoresis electrode. The present invention can improve the detection capability of low-concentration impurities.

Description

Technical Field

[0001] The present invention relates to the technical field of particle detection, and in particular to a device and method for detecting ultra-low concentration solid impurities in an aqueous solution. Background Art

[0002] Detecting solid impurities in aqueous solutions is a crucial quality management activity, playing an irreplaceable role in ensuring the purity of aqueous solutions, maintaining the normal operation of industrial systems, protecting the environment, and safeguarding public health. In high-precision industries such as semiconductor manufacturing, pharmaceutical production, and chemical synthesis, solid impurities in aqueous solutions can seriously affect material purity and reaction efficiency.

[0003] For example, in the medical nutrition production industry, even trace amounts of solid particles can degrade product performance and reliability. In industries like petrochemicals, power generation, and metallurgy, aqueous solutions are often used as coolants, lubricants, or reaction media. If these solutions contain a high concentration of solid particles, they can accumulate in equipment like pipes, pumps, and heat exchangers, causing wear, reduced efficiency, and even equipment damage.

[0004] Existing detection methods include capacitively coupled non-contact conductivity detection, laser scattering, and ultraviolet-visible spectroscopy. However, existing technologies have limitations in detecting ultra-low concentrations of solid particles, and generally require higher concentrations to achieve accurate detection results. Summary of the Invention

[0005] The object of the present invention is to provide a device and method for detecting ultra-low concentration solid impurities in aqueous solutions, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a device for detecting ultra-low concentration solid impurities in an aqueous solution, comprising:

[0007] A first tank body, wherein the liquid to be detected is arranged inside;

[0008] a power supply electrically connected to an electrophoretic electrode and an auxiliary electrode, wherein the electrophoretic electrode and the auxiliary electrode are both disposed in the liquid to be detected, and a gap is defined between the electrophoretic electrode and the auxiliary electrode. An electric field is established in the gap, and solid impurity particles in the liquid to be detected within the electric field move toward the electrophoretic electrode;

[0009] The detection unit is used to obtain the solid impurity particle concentration data around the electrophoresis electrode.

[0010] Optionally, it further includes a second tank body, in which the liquid to be detected is arranged, the second tank body is connected to the first tank body through a first pipeline, and the first pipeline is provided with a pump.

[0011] Optionally, the second tank body is further connected to the first tank body via a second pipeline, and a flow switch is provided on the second pipeline.

[0012] Optionally, a stirring device is further included, which is arranged in the second tank body.

[0013] Optionally, an ultrasonic dispersion device is further included, which is arranged at the bottom of the second tank.

[0014] Optionally, the electrophoresis electrode and the auxiliary electrode are both made of metal.

[0015] Optionally, the electrophoresis electrode is columnar.

[0016] Optionally, the auxiliary electrode is in a mesh shape, a sheet shape, or a ring shape.

[0017] Optionally, the detection unit includes a laser detection system and a photoelectric detector, an optical system is arranged between the laser detection system and the photoelectric detector, the optical system is arranged on both sides of the first trough and corresponds to the electrophoresis electrode, the photoelectric detector is electrically connected to a signal conversion and processing circuit, and the signal conversion and processing circuit is electrically connected to an analysis system.

[0018] The present invention also provides a method for detecting ultra-low concentration solid impurities in an aqueous solution, comprising the following steps:

[0019] placing the liquid to be detected in the first tank;

[0020] placing the electrophoresis electrode and the auxiliary electrode in the liquid to be detected in the first tank;

[0021] The power supply outputs electrical parameters to the electrophoretic electrode and the auxiliary electrode, so that an electric field is established in the gap between the electrophoretic electrode and the auxiliary electrode, so that solid impurity particles in the liquid to be detected within the electric field move toward the electrophoretic electrode;

[0022] The detection unit acquires the solid impurity particle concentration data around the electrophoresis electrode.

[0023] The present invention discloses the following technical effects: an electric field is constructed in the liquid to be detected by a power supply, an electrophoresis electrode and an auxiliary electrode to form an electrophoresis effect, so that ultrafine solid impurities in the liquid to be detected move directionally toward the electrophoresis electrode, thereby increasing the ultrafine solid impurity content around the electrophoresis electrode, thereby improving the detection accuracy of the detection unit and improving the detection capability of low-concentration impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 Schematic diagram of the power supply, electrophoresis electrode and auxiliary electrode of the present invention.

[0027] In the figure: 1. First tank; 2. Power supply; 3. Electrophoresis electrode; 4. Auxiliary electrode; 5. Second tank; 6. First pipeline; 7. Pump; 8. Second pipeline; 9. Flow switch; 10. Stirring device; 11. Ultrasonic dispersion device; 12. Laser detection system; 13. Photoelectric detector; 14. Optical system; 15. Signal conversion and processing circuit; 16. Analysis system. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-Figure 2 The present invention provides a device for detecting ultra-low concentration solid impurities in an aqueous solution, comprising:

[0031] The first tank 1 contains a liquid to be detected;

[0032] A power source 2 is electrically connected to an electrophoretic electrode 3 and an auxiliary electrode 4. The electrophoretic electrode 3 and the auxiliary electrode 4 are both disposed in the liquid to be detected. A gap is formed between the electrophoretic electrode 3 and the auxiliary electrode 4. An electric field is established in the gap, and solid impurity particles in the liquid to be detected within the electric field move toward the electrophoretic electrode 3.

[0033] The detection unit is used to obtain the concentration data of solid impurity particles around the electrophoresis electrode 3.

[0034] An electric field is constructed in the liquid to be detected by the power supply 2, the electrophoresis electrode 3 and the auxiliary electrode 4 to form an electrophoresis effect, so that the ultrafine solid impurities in the liquid to be detected move toward the electrophoresis electrode 3, thereby increasing the ultrafine solid impurity content around the electrophoresis electrode 3, thereby improving the detection accuracy of the detection unit and improving the detection capability of low-concentration impurities.

[0035] Specifically, ultrafine solid impurity particles can obtain surface potential in the solution. There are four main ways to obtain surface potential, including dissociation or ionization of particle surface groups, ion adsorption, ionic surfactant adsorption and isomorphic substitution. The charged impurity particles will form a charged colloid core, which will form a diffuse double layer structure by attracting ions with opposite charges in the adjacent liquid phase. Under the action of the auxiliary electric field generated by the power supply 2, the electrophoresis electrode 3 and the auxiliary electrode 4, the solid phase and the liquid in the adjacent sliding surface will move relative to the liquid phase outside the sliding surface. By controlling the auxiliary electric field parameters, the ultrafine solid impurity particles in the test liquid can be attracted to the vicinity of the electrophoresis electrode 3, thereby increasing the impurity concentration in the local area, making it easier for the detection unit to detect ultra-low concentration impurity particles in the aqueous solution.

[0036] Furthermore, the polarities (positive and negative polarities) of the two electrophoretic electrodes 3 and the auxiliary electrode 4 may be changed according to actual conditions to accommodate different types of particles.

[0037] A further optimized solution further includes a second tank body 5 , in which the liquid to be detected is arranged. The second tank body 5 is connected to the first tank body 1 through a first pipeline 6 , and a pump 7 is arranged on the first pipeline 6 .

[0038] The liquid to be tested in the second tank body 5 can be transported to the first tank body 1 by the pump 7. By adjusting the relevant parameters of the pump 7, the liquid to be tested in the first tank body 1 can maintain the required capacity for testing.

[0039] According to a further optimized solution, the second tank body 5 is further connected to the first tank body 1 via a second pipeline 8 , and a flow switch 9 is provided on the second pipeline 8 .

[0040] By controlling the on and off of the flow switch 9, the backflow of the liquid to be tested and the output of the waste liquid after testing are controlled.

[0041] A further optimized solution further includes a stirring device 10 disposed in the second tank body 5 .

[0042] The rotation of the blades of the stirring device 10 makes the ultrafine solid impurity particles in the liquid to be detected in the second tank 5 evenly distributed in the liquid to be detected.

[0043] A further optimized solution further includes an ultrasonic dispersion device 11 , which is arranged at the bottom of the second tank body 5 .

[0044] The ultrasonic dispersion device 11 has a built-in ultrasonic high-frequency vibrator. By adjusting the ultrasonic power supply, the ultrasonic vibration and output amplitude can be adjusted. The ultrasonic dispersion device 11 assists the stirring device 10 to evenly distribute the impurity particles in the liquid to be tested, ensuring the accuracy of the test.

[0045] In a further optimized solution, the electrophoresis electrode 3 and the auxiliary electrode 4 are both made of metal.

[0046] In a further optimized solution, the electrophoresis electrode 3 is columnar, and can be a filament or rod structure, which can be flexibly changed according to the size and shape of the first tank body 1 .

[0047] In a further optimized solution, the auxiliary electrode 4 is in a mesh, sheet or ring shape, and can be flexibly changed according to the size and shape of the first tank body 1 .

[0048] A further optimized solution is that the detection unit includes a laser detection system 12 and a photoelectric detector 13. An optical system 14 is arranged between the laser detection system 12 and the photoelectric detector 13. The optical system 14 is arranged on both sides of the first tank body 1 and corresponds to the electrophoresis electrode 3. The photoelectric detector 13 is electrically connected to a signal conversion and processing circuit 15, and the signal conversion and processing circuit 15 is electrically connected to an analysis system 16.

[0049] Laser detection system 12 adjusts the laser parameters required by existing laser detection technology, outputs a laser light source, and adjusts the optical path through optical system 14. Photodetector 13 is responsible for receiving laser detection signals, and signal conversion and processing circuit 15 is used to transmit the detection information to analysis system 16.

[0050] A method for detecting ultra-low concentration solid impurities in an aqueous solution comprises the following steps:

[0051] First, the ultrafine solid impurity particles in the liquid to be tested in the second tank body 5 are evenly dispersed by the stirring device 10 and the ultrasonic dispersion device 11, and then the liquid to be tested is placed in the first tank body 1 by the pump 7;

[0052] Place the electrophoresis electrode 3 and the auxiliary electrode 4 in the liquid to be detected in the first tank 1;

[0053] The power supply 2 outputs electrical parameters to the electrophoresis electrode 3 and the auxiliary electrode 4, so that an electric field is established in the gap between the electrophoresis electrode 3 and the auxiliary electrode 4, so that solid impurity particles in the liquid to be detected in the electric field move toward the electrophoresis electrode 3;

[0054] The detection unit obtains the solid impurity particle concentration data around the electrophoresis electrode 3, outputs the laser light source through the laser detection system 12, adjusts the light path through the optical system 14, and the photodetector 13 receives the laser detection signal. The detection information is transmitted to the analysis system 16 through the signal conversion and processing circuit 15 to detect and analyze the ultrafine solid impurity particles.

[0055] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A device for detecting ultra-low concentration solid impurities in aqueous solutions, characterized in that: include: A first tank (1) having a liquid to be detected disposed therein; A power source (2) is electrically connected to an electrophoretic electrode (3) and an auxiliary electrode (4), wherein the electrophoretic electrode (3) and the auxiliary electrode (4) are both disposed in the liquid to be detected, and a gap is provided between the electrophoretic electrode (3) and the auxiliary electrode (4), wherein an electric field is constructed in the gap, and solid impurity particles in the liquid to be detected in the electric field move toward the electrophoretic electrode (3); The electrophoresis electrode (3) is columnar; The auxiliary electrode (4) is in the shape of a mesh, a sheet or a ring; A detection unit is used to obtain the solid impurity particle concentration data around the electrophoresis electrode (3), the detection unit comprising a laser detection system (12) and a photodetector (13), an optical system (14) being arranged between the laser detection system (12) and the photodetector (13), the optical system (14) being arranged on both sides of the first tank (1) and corresponding to the electrophoresis electrode (3), the photodetector (13) being electrically connected to a signal conversion and processing circuit (15), and the signal conversion and processing circuit (15) being electrically connected to an analysis system (16).

2. The device for detecting ultra-low concentration solid impurities in aqueous solutions according to claim 1, characterized in that: It also includes a second tank body (5) in which the liquid to be detected is arranged. The second tank body (5) is connected to the first tank body (1) through a first pipeline (6). The first pipeline (6) is provided with a pump (7).

3. The device for detecting ultra-low concentration solid impurities in aqueous solutions according to claim 2, characterized in that: The second tank body (5) is also connected to the first tank body (1) via a second pipeline (8), and a flow switch (9) is provided on the second pipeline (8).

4. The device for detecting ultra-low concentration solid impurities in aqueous solutions according to claim 2, characterized in that: It also includes a stirring device (10) which is arranged in the second tank body (5).

5. The device for detecting ultra-low concentration solid impurities in aqueous solutions according to claim 2, characterized in that: It also includes an ultrasonic dispersion device (11) which is arranged at the bottom of the second tank body (5).

6. The device for detecting ultra-low concentration solid impurities in aqueous solutions according to claim 1, characterized in that: The electrophoresis electrode (3) and the auxiliary electrode (4) are both made of metal.

7. A method for detecting ultra-low concentration solid impurities in an aqueous solution, based on the device for detecting ultra-low concentration solid impurities in an aqueous solution according to any one of claims 1 to 6, characterized in that: The following steps are involved: Placing the liquid to be detected in the first tank (1); Placing the electrophoresis electrode (3) and the auxiliary electrode (4) in the liquid to be detected in the first tank (1); The power supply (2) outputs electrical parameters to the electrophoretic electrode (3) and the auxiliary electrode (4), so that an electric field is constructed in the gap between the electrophoretic electrode (3) and the auxiliary electrode (4), so that solid impurity particles in the liquid to be detected within the electric field move toward the electrophoretic electrode (3); The detection unit acquires the solid impurity particle concentration data around the electrophoresis electrode (3).

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