System for monitoring and preventing blockage of ICP atomizer
By introducing microfluidic pressure sensors and disposable needle filters into the ICP atomizer system, the problem of prone to blockage of the atomizer is solved, real-time monitoring and prevention of the blockage state is achieved, and the detection stability and analysis accuracy are improved.
Patent Information
- Application Number
- CN202422057741.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-23
AI Technical Summary
In the prior art, ICP atomizers are prone to blockage and are difficult to monitor and prevent in a timely manner, which affects the stability of the detection results.
A microfluidic pressure sensor is used to monitor the blocking state of the atomizer in real time, and filter out solid particles through a disposable needle filter to prevent blockage of the atomizer.
Real-time effective monitoring and prevention of the blockage of atomizer is achieved, reducing blockage of atomizer, and improving the stability of detection results and analysis sensitivity.
Smart Images
Figure CN223055872U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of test solution atomization, and specifically relates to a system for monitoring and preventing the blockage of an ICP atomizer. Background Art
[0002] In the field of instrumental analysis, the atomizers of inductively coupled plasma optical emission spectrometers (ICP-OES) and inductively coupled plasma mass spectrometers (ICP-MS) can atomize test solutions into aerosol particles with a particle size less than 10 μm and a relatively narrow particle size distribution to achieve efficient atomization and ionization. The blockage state of the atomizer directly and severely affects the atomization effect. Effectively monitoring the blockage state of the ICP atomizer during its operation is of great significance for ensuring the stability of the detection results. Currently, the main method for judging the blockage state of the ICP atomizer is the visual experience method, that is, observing whether the air bubbles in the liquid inlet hose flow and whether there is liquid leakage or detachment at the connection between the liquid inlet hose and the hard pipe of the atomizer. When the above situations occur, the atomizer is already severely blocked, and its blockage state cannot be detected and prevented in a timely and effective manner. Based on the above existing problems, a method for monitoring and preventing the blockage state of the ICP atomizer is proposed. Content of the Utility Model
[0003] To solve the above problems, the utility model aims to provide a system for monitoring and preventing the blockage of an ICP atomizer, which can effectively monitor the blockage state of the atomizer and prevent the atomizer from being blocked.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A system for monitoring and preventing the blockage of an ICP atomizer disclosed by the utility model includes an atomizer, a peristaltic pump, and a test solution container. The atomizer, the peristaltic pump, and the test solution container are sequentially connected through a liquid inlet pipe. A microfluidic pressure sensor is arranged on the liquid inlet pipe connected between the atomizer and the peristaltic pump. The microfluidic pressure sensor is electrically connected to a computer through a signal line. A filter is arranged between the peristaltic pump and the test solution container.
[0006] Further, the filter is a disposable needle filter, and the diameter of the filter hole of the disposable needle filter is smaller than the diameter of the test solution capillary of the atomizer.
[0007] Further, the disposable needle filter includes a liquid inlet end, a filtering part, and a liquid outlet end that are sequentially connected. The liquid inlet end and the liquid outlet end of the disposable needle filter are respectively connected to the corresponding liquid inlet pipes.
[0008] Further, the filtering part is a polypropylene filtering part.
[0009] Further, the liquid inlet end is a PTFE fine tube that fits with the corresponding connected liquid inlet pipe.
[0010] Further, a buckle that fits with the corresponding connected liquid inlet pipe is provided at the liquid outlet end.
[0011] Further, the measuring range of the microfluidic pressure sensor is 0.1 Mpa - 10 Mpa.
[0012] Further, the microfluidic pressure sensor feeds back that the pressure blockage value of the atomizer is P max , and the microfluidic pressure sensor feeds back that the pressure warning value of the atomizer is P0.
[0013] Further, the test solution container is a volumetric flask, and the corresponding connected liquid inlet pipe extends into the volumetric flask.
[0014] The beneficial effects of the present utility model are as follows:
[0015] A system for monitoring and preventing ICP atomizer blockage provided by the present utility model is used for monitoring the blockage state of the atomizer and preventing atomizer blockage. During the atomization experiment, the peristaltic pump is started, and the test solution is pumped out from the test solution container through the liquid inlet pipe, and successively passes through the filter, the peristaltic pump, and the microfluidic pressure sensor, and then enters the atomizer for atomization. The microfluidic pressure sensor transmits and feeds back the collected pressure information to the computer through the signal line. The experimenter can understand and master the blockage state of the atomizer through the information fed back by the computer, so as to effectively monitor the blockage state of the atomizer in real time; the test solution passes through the filter, and the filter separates solid particles from the test solution, filters out the solid particles in the test solution, and the filtered test solution flows into the atomizer, reducing the formation of blockage in the atomizer and effectively preventing atomizer blockage. Description of the Drawings
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 is a schematic structural diagram of a system for monitoring and preventing ICP atomizer blockage provided by an embodiment of the present utility model;
[0018] Figure 2 is a pressure threshold diagram of the computer monitoring the atomizer provided by an embodiment of the present utility model;
[0019] Figure 3 is a structural schematic diagram of a disposable needle filter provided by an embodiment of the present utility model.
[0020] Reference numerals: nebulizer 1, microfluidic pressure sensor 2, peristaltic pump 3, filter 4, liquid outlet end 401, filtering section 402, liquid inlet end 403, liquid inlet pipe 5, test solution container 6, signal line 7, computer 8, argon gas cylinder 9, gas inlet pipe 10. Detailed implementation manners
[0021] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.
[0022] The present utility model will be further described below with reference to the drawings and embodiments.
[0023] As Figure 1 、 Figure 2 、 Figure 3 shown, this embodiment provides a system for monitoring and preventing blockage of an ICP nebulizer, including a nebulizer 1, a peristaltic pump 3 and a test solution container 6. The nebulizer 1, the peristaltic pump 3 and the test solution container 6 are sequentially connected through a liquid inlet pipe 5. A microfluidic pressure sensor 2 is provided on the liquid inlet pipe 5 connected between the nebulizer 1 and the peristaltic pump 3. The microfluidic pressure sensor 2 is electrically connected to a computer 8 through a signal line 7. A filter 4 is provided between the peristaltic pump 3 and the test solution container 6. The nebulizer 1 is communicated with an argon gas cylinder 9 through a gas inlet pipe 10 to provide a protective atmosphere, avoid the influence of external air on the test solution, generate plasma with argon, and improve the analysis sensitivity and accuracy.
[0024] A system for monitoring and preventing clogging of an ICP nebulizer based on the above structure is used for monitoring the clogging state of the nebulizer and preventing the nebulizer from clogging. During the atomization experiment, the peristaltic pump 3 is started, and the test solution is pumped out from the test solution container 6 through the liquid inlet pipe 5, and successively passes through the filter 4, the peristaltic pump 3, and the microfluidic pressure sensor 2, and then enters the nebulizer 1 for atomization. The microfluidic pressure sensor 2 transmits the collected pressure information to the computer 8 through the signal line 7 for feedback. The experimenter can understand and master the clogging state of the nebulizer 1 through the information fed back by the computer 8, so as to monitor the clogging state of the nebulizer 1 in real time and effectively. For example, if the pressure value transmitted by the microfluidic pressure sensor 2 becomes larger, it indicates that the nebulizer 1 is in a clogged state, and the experimenter needs to clean the nebulizer 1. When the pressure value transmitted by the sensor 2 becomes larger to the clogging value, the experimenter needs to replace the nebulizer 1; the test solution passes through the filter 4, and the filter 4 separates the solid particles from the test solution, filters out the solid particles in the test solution, and the filtered test solution flows into the nebulizer 1, reducing the formation of clogging in the nebulizer 1, effectively preventing the nebulizer from clogging, and reducing the impact on the atomization effect of the test solution.
[0025] As an implementable manner, as Figure 3 shown, the filter 4 is a disposable needle filter 4, and the diameter of the filtering holes of the disposable needle filter 4 is smaller than the diameter of the test solution capillary of the nebulizer 1.
[0026] The diameter of the filtering holes of the disposable needle filter 4 is smaller than the diameter of the test solution capillary of the nebulizer 1. For example, the diameter of the filtering holes of the disposable needle filter 4 is 0.2 mm, and the diameter of the test solution capillary of the nebulizer 1 is 0.3 mm, which can effectively filter out the solid particles with a particle size greater than 0.2 mm in the test solution, enabling the test solution to smoothly enter the test solution capillary of the nebulizer 1 and effectively preventing the nebulizer 1 from clogging.
[0027] Among them, as Figure 3 shown, the disposable needle filter 4 includes a liquid inlet end 403, a filtering part 402, and a liquid outlet end 401 that are connected in sequence. The liquid inlet end 403 and the liquid outlet end 401 of the disposable needle filter 4 are respectively connected to the corresponding liquid inlet pipe 5 in a communicating manner.
[0028] The test solution flows into the liquid inlet end 403 through the liquid inlet pipe 5, the test solution flows into the filtering part 402 through the liquid inlet end 403, the filtering part 402 filters the test solution, separates the solid particles from the test solution, the filtered test solution flows into the liquid outlet end 401, and the filtered test solution flows out from the liquid outlet end 401 and finally flows into the nebulizer 1, effectively preventing the nebulizer 1 from clogging. The corresponding connected liquid inlet pipe 5 is a direct connection. For example, the liquid outlet end 401 is connected to the corresponding liquid inlet pipe 5, and it is a section of the liquid inlet pipe 5 that is directly connected to the liquid outlet end 401. The liquid inlet end 403 and the liquid outlet end 401 are quickly connected to the liquid inlet pipe 5 by a buckle or are inserted in cooperation with a sealing tape or are threadedly connected in cooperation with a sealing tape.
[0029] Among them, as Figure 3 shown, the filtering part 402 is a polypropylene filtering part.
[0030] Polypropylene has the advantages of stable chemical properties, flexibility, not easy to break, high temperature resistance, acid and alkali resistance, etc., which improves the service life of the filter 4.
[0031] Among them, as Figure 3 shown, the liquid inlet end 403 is a PTFE fine tube that fits with the corresponding connected liquid inlet pipe 5.
[0032] The PTFE fine tube has good acid and alkali resistance, which improves the service life of the filter 4. The length and inner diameter of the PTFE fine tube can be designed according to specific needs. For example, the length of the PTFE fine tube is 10 cm and the inner diameter of the PTFE fine tube is 1 mm.
[0033] Among them, as Figure 3 shown, the liquid outlet end 401 is provided with a buckle that fits with the corresponding connected liquid inlet pipe 5.
[0034] The liquid outlet end 401 adopts a buckle design, which is convenient for quick connection or disassembly with the corresponding connected liquid inlet pipe 5, facilitating later replacement and maintenance.
[0035] As an implementable way, as Figure 1 shown, the range of the microfluidic pressure sensor 2 is 0.1 Mpa - 10 Mpa.
[0036] The range of the microfluidic pressure sensor 2 is 0.1 Mpa - 10 Mpa, such as 0.1 Mpa, 0.5 Mpa, 1 Mpa, 5 Mpa, 10 Mpa. The microfluidic pressure sensor 2 with a suitable range can be selected according to the specific fluid pressure requirements.
[0037] As an implementable way, as Figure 1 、 Figure 2 shown, the microfluidic pressure sensor 2 feeds back that the pressure blockage value of the atomizer 1 is P max , and the microfluidic pressure sensor 2 feeds back that the pressure warning value of the atomizer 1 is P0.
[0038] When the pressure of the test solution reaches the pressure warning value P0, when P0 reaches about 2 Mpa, such as when P0 is 1.9 Mpa or 2.0 Mpa or 2.1 Mpa, the atomizer 1 needs to be cleaned with 5% dilute aqua regia and deionized water; when the fluid pressure reaches the pressure blockage value P max When max reaches about 2.5 Mpa, such as when P maxWhen it is 2.4 Mpa or 2.5 Mpa or 2.6 Mpa, the atomizer 1 needs to be replaced, which is convenient for the experimenter to select cleaning, maintenance or replacement of the atomizer 1, and reduces the influence on the atomization effect of the test solution.
[0039] As an implementable mode, such as Figure 1 shown, the test solution container 6 is a volumetric flask, and the corresponding connecting liquid inlet pipe 5 extends into the volumetric flask.
[0040] The volumetric flask has scale lines, which is convenient for quantitative analysis of the test solution.
[0041] As described above, only the specific implementation manners of the present utility model are provided, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model.
Claims
1. A system for monitoring and preventing clogging of an ICP nebulizer, comprising a nebulizer (1), a peristaltic pump (3) and a test solution container (6), wherein the nebulizer (1), the peristaltic pump (3) and the test solution container (6) are sequentially connected through a liquid inlet pipe (5), and is characterized in that, A microfluidic pressure sensor (2) is provided on the liquid inlet pipe (5) connected between the atomizer (1) and the peristaltic pump (3). The microfluidic pressure sensor (2) is electrically connected to a computer (8) through a signal line (7). A filter (4) is provided between the peristaltic pump (3) and the test solution container (6).
2. The monitoring and prevention system for ICP nebulizer clogging according to claim 1, characterized in that, The filter (4) is a disposable needle filter (4), and the diameter of the filtering holes of the disposable needle filter (4) is smaller than the diameter of the test solution capillary of the atomizer (1).
3. The monitoring and prevention system for ICP nebulizer clogging according to claim 2, characterized in that, The disposable needle filter (4) includes a liquid inlet end (403), a filtering part (402), and a liquid outlet end (401) that are connected in sequence. The liquid inlet end (403) and the liquid outlet end (401) of the disposable needle filter (4) are respectively connected to the corresponding liquid inlet pipe (5).
4. A system for monitoring and preventing clogging of an ICP nebulizer according to claim 3, characterized in that, The filtering part (402) is a polypropylene filtering part.
5. A system for monitoring and preventing clogging of an ICP nebulizer according to claim 3, characterized in that, The liquid inlet end (403) is a PTFE fine tube that fits with the corresponding liquid inlet pipe (5).
6. The monitoring and prevention system for ICP nebulizer clogging according to claim 3, characterized in that, The liquid outlet end (401) is provided with a buckle that fits with the corresponding liquid inlet pipe (5).
7. The monitoring and prevention system for ICP nebulizer blockage according to claim 1, characterized in that, The measuring range of the microfluidic pressure sensor (2) is 0.1 Mpa - 10 Mpa.
8. A system for monitoring and preventing clogging of an ICP nebulizer according to claim 1, characterized in that, The microfluidic pressure sensor (2) feeds back that the pressure blockage value of the atomizer (1) is P max , and the microfluidic pressure sensor (2) feeds back that the pressure warning value of the atomizer (1) is P0.
9. A system for monitoring and preventing clogging of an ICP nebulizer according to claim 1, characterized in that, The test solution container (6) is a volumetric flask, and the corresponding liquid inlet pipe (5) extends into the volumetric flask.