CN210646179U - Sample dispersing system - Google Patents
Sample dispersing system Download PDFInfo
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- CN210646179U CN210646179U CN201921294772.5U CN201921294772U CN210646179U CN 210646179 U CN210646179 U CN 210646179U CN 201921294772 U CN201921294772 U CN 201921294772U CN 210646179 U CN210646179 U CN 210646179U
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Abstract
The utility model discloses a sample disperse system, include: a sample container having a sample inlet, a surfactant inlet, a dispersant inlet, and a sample liquid outlet; the stirring device comprises a stirring part and a control part, the stirring part is connected with the control part, and the stirring part is positioned in the sample container; the cooling device comprises a cooling machine and a cooling pipe, the cooling machine is connected with one end of the cooling pipe, and the other end of the cooling pipe extends into the sample container; the ultrasonic dispersion device comprises an ultrasonic generation device and an ultrasonic probe, wherein the ultrasonic generation device is connected with the ultrasonic probe, and the ultrasonic probe extends into the sample container. The system is favorable for improving the dispersion effect of the powder sample in the dispersing agent, so that the temperature of the test solution is kept constant, and the accuracy and the repeatability of the particle size distribution test are improved.
Description
Technical Field
The utility model belongs to the technical field of the analysis detects, particularly, the utility model relates to a sample disperse system.
Background
The measurement of the particle size distribution of the powder material is widely used in various powder production and processing industries, such as powder metallurgy, additive manufacturing (3D printing), battery materials, pharmacy, cement, catalysts, and the like. In the measurement of particle size distribution, the most common method is a wet method, in which a powder sample is added to a dispersant (water, ethanol, etc.), then a small amount of surfactant is added, the sample is dispersed by ultrasonic waves, and the dispersed sample solution is injected into a sample injection device of a particle analyzer, and the particle size distribution is measured by the particle analyzer. When the powder sample is continuously dispersed in the dispersing agent by ultrasonic waves, the powder sample forms a test solution by the combined action of the dispersing agent and the surfactant, but the temperature of the test solution is increased due to the use of ultrasonic dispersion. At present, in order to improve the dispersion effect of a powder sample, the power of an ultrasonic generator is increased, so that the temperature of a test solution is increased more seriously and sometimes even reaches more than 60 ℃. When the dispersed high-temperature test solution is injected into the particle analyzer sample injector for analysis, the temperature of the dispersion medium in the particle analyzer sample injector is increased due to the high temperature of the test solution, so that the physical property of the dispersion medium is changed, and the result is deviated. In addition, because the temperature of the well-dispersed test solution is high, temperature gradients can be generated in the dispersion medium injected into a sample injector of the particle analyzer, obvious interference can occur, and the temperature of some particle analyzers can be uniform through continuous stirring so as to eliminate the interference caused by the temperature gradients, so that the analysis time is prolonged, the well-dispersed samples can be re-aggregated, and the result deviation is caused.
In order to solve the problem, the existing common method is to reduce the intensity of ultrasonic dispersion, shorten the ultrasonic dispersion time and reduce the adding amount of the test solution during the test. In this way, only the increase in temperature can be reduced, which is unavoidable and which can seriously affect the dispersing effect.
Therefore, the prior art sample dispersion technique before the particle size distribution measurement is in need of further improvement.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an object of the present invention is to provide a sample distribution system. The system is favorable for improving the dispersion effect of the powder sample in the dispersing agent, so that the temperature of the test solution is kept constant, and the accuracy and the repeatability of the particle size distribution test are improved.
In an aspect of the utility model, the utility model provides a sample disperse system, according to the utility model discloses an embodiment, this system includes:
a sample container having a sample inlet, a dispersant inlet, a surfactant inlet, and a sample liquid outlet;
the stirring device is provided with a stirring part and a control part, the stirring part is connected with the control part, and the stirring part is positioned in the sample container;
the cooling device comprises a cooling machine and a cooling pipe, the cooling machine is connected with one end of the cooling pipe, and the other end of the cooling pipe extends into the sample container;
the ultrasonic dispersion device comprises an ultrasonic generation device and an ultrasonic probe, wherein the ultrasonic generation device is connected with the ultrasonic probe, and the ultrasonic probe extends into the sample container.
According to the sample dispersing system provided by the embodiment of the utility model, the sample container, the stirring device, the cooling device and the ultrasonic dispersing device are combined together, and the strong dispersing capacity of the ultrasonic dispersing device is utilized, so that the powder sample which is difficult to disperse can be well dispersed under the stirring and mixing action of the stirring device; meanwhile, the stirring device can fully and uniformly mix the sample and the surfactant in the dispersing agent, so that a better ultrasonic dispersion effect is ensured, heat exchange can be rapidly carried out between the dispersed test solution and the cooling pipe, the cooling pipe of the cooling device can timely take away heat generated by ultrasonic dispersion, the temperature of the test solution is kept constant and uniform, the test solution with higher temperature is prevented from being introduced into the particle size distribution instrument, and further test deviation caused by temperature gradient due to the fact that the temperature of the test solution is higher than the temperature of a dispersion medium in the particle size instrument can be avoided; meanwhile, the test deviation caused by the deviation of the instrument background calibration value due to the temperature rise of the dispersion medium can be avoided, the test time of the test solution in the sample injector can be reduced, the secondary aggregation phenomenon of the sample particles in the analysis process is reduced, and the accuracy of the analysis test is improved.
In addition, the sample dispersing system according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the distance between the ultrasonic probe and the liquid level in the sample container is 5-20% of the height of the sample container. This further ensures the sample dispersion effect.
Optionally, the distance of the ultrasonic probe from the bottom of the sample container is not less than 50% of the height of the sample container. This further ensures the sample dispersion effect.
Optionally, the distance between the liquid level in the sample container and the top of the sample container is 5-20% of the height of the sample container. This further ensures the sample dispersion effect.
Optionally, the sample container is a glass or plastic cup, a ceramic cup, a metal cup.
Optionally, the stirring device is a magnetic stirrer or a paddle stirrer.
Optionally, the cooler is a constant temperature cooler, and the cooling pipe is a metal cooling pipe.
Optionally, the cooling pipe comprises a first straight pipe, a ring pipe and a second straight pipe, one end of the first straight pipe is connected with the cooling machine, one end of the ring pipe is connected with the other end of the first straight pipe, one end of the second straight pipe is connected with the other end of the ring pipe, and the ring pipe and at least a part of the second straight pipe and at least a part of the first straight pipe are arranged inside the sample container. This can further improve the cooling effect.
Optionally, the ultrasonic dispersion device is a probe type ultrasonic generator. This can further improve the sample dispersion effect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a sample distribution system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sample distribution system according to still another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In an aspect of the present invention, the utility model provides a sample disperse system, according to the utility model discloses an embodiment, refer to fig. 1, this system includes: a sample container 100, a stirring device 200, a cooling device 300, and an ultrasonic dispersion device 400.
According to an embodiment of the present invention, the sample container 100 has a sample inlet 101, a surfactant inlet 102, a dispersant inlet 103, and a sample liquid outlet 104, and is adapted to provide space for sample dispersion. The sample inlet 101, the surfactant inlet 102, the dispersant inlet 103, and the sample outlet 104 may be one or more ports, and those skilled in the art can select the ports according to actual needs. Further, the specific type of the sample container is not particularly limited, and those skilled in the art can select the type according to actual needs, for example, the type may be a glass or plastic cup, a ceramic cup, or a metal cup. The distance between the liquid level in the sample container and the top of the sample container is not particularly limited, and may be selected by those skilled in the art according to the actual requirement, and may be, for example, 5 to 20%, and further, may be, for example, 5, 8%, 10%, 12%, 15%, 17%, or 20%. The inventor finds that if the ratio of the distance between the liquid level in the sample container and the top of the sample container to the height of the sample container is too large, the content of the test solution in the sample container is too small, which is not favorable for the production efficiency and may affect the cooling effect of the cooling pipe; if the ratio of the distance between the liquid level in the sample container and the top of the sample container to the height of the sample container is too small, the content of the test solution is too high, and the sample may overflow in the dispersion process, thereby causing the waste of the test solution.
According to the utility model discloses an embodiment, agitating unit 200 has stirring portion 210 and control part 220, and stirring portion 210 links to each other with control part 220, and stirring portion 210 is located inside sample container 100, and is suitable for stirring sample, dispersant and surfactant active in the sample container to obtain the even sample liquid that disperses. Specifically, the stirring device stirs the dispersing agent through a stirring part positioned in the container, and the control part can control the stirring part so as to control the stirring speed of the stirring part and better realize the dispersion of the sample and the surfactant in the dispersing agent. The inventors have found that the stirring in the stirring section promotes the sufficient and uniform mixing of the sample and the surfactant in the dispersant, and that the sample and the surfactant can be more effectively suspended in the dispersant to improve the dispersing effect of the sample. Meanwhile, under the stirring effect, the heat exchange efficiency of the dispersing agent and the cooling pipe can be improved, and the temperature distribution of the dispersing agent is kept uniform and constant. It should be noted that the specific type of the stirring device 200 is not particularly limited, and those skilled in the art can select the type according to actual needs, such as a magnetic stirrer or a paddle stirrer. When the stirring device is a magnetic stirrer, the control part is positioned below the outer part of the sample container, and the magnetic stirrer (namely the stirring part) placed in the sample container is pushed to perform circumferential operation by using the magnetic field according to the principle that like poles repel and opposite poles attract of the magnetic field, so that the aim of stirring and dispersing is fulfilled. When agitating unit was the paddle agitator, the control part was located the outside top of sample container, and inside the paddle stretched into the sample container, the paddle rotated under the drive of control part, and then realized stirring dispersed purpose.
According to the embodiment of the present invention, the cooling device 300 comprises a cooling machine 310 and a cooling tube 320, the cooling machine 310 is connected to one end of the cooling tube 320, and the other end of the cooling tube 320 extends into the sample container 100, and is suitable for cooling the test solution in the container. The inventor finds that the heat generated by ultrasonic dispersion can be taken away in time by adding the cooling device, the temperature of the dispersing agent in the sample container can be uniformly distributed and kept constant, and the temperature of the dispersing agent is almost completely consistent with the temperature of the dispersing medium in the particle size analyzer sample injector, so that temperature gradient can not exist in the analysis process, the temperature of the dispersing medium in the particle size analyzer sample injector can not be increased, the physical property of the dispersing medium in the particle size analyzer sample injector can be prevented from being changed, and the test error can be avoided; meanwhile, the test deviation caused by the deviation of the instrument background calibration value due to the temperature rise of the dispersion medium can be avoided, the test time of the test solution in the sample injector can be reduced, the secondary aggregation phenomenon of the sample particles in the analysis process is reduced, and the accuracy of the analysis test is improved; and because the dispersion effect is good, the temperature is controlled, the powder dispersion test solution can be directly added through a dropper, and the test is immediately or directly carried out after the powder dispersion test solution is slightly and uniformly stirred, thereby not only avoiding the analysis error, but also improving the working efficiency. It should be noted that the specific type of the cooling device 300 is not particularly limited, and may be selected by those skilled in the art according to actual needs, for example, the cooling machine 310 may be a constant temperature cooling machine, and the cooling pipe 320 may be a metal cooling pipe. Further, the specific type of the metal cooling pipe is not particularly limited, and those skilled in the art can select the metal cooling pipe according to actual needs, such as copper cooling pipe, aluminum cooling pipe, and stainless steel cooling pipe. The cooling medium in the metal cooling pipe can indirectly exchange heat with the dispersing agent in the sample container through the cooling pipe, the heat generated by ultrasonic dispersion is taken away, the constancy of the temperature of the test solution is realized, and the gradual rise of the temperature of the test solution caused by the ultrasonic dispersion is avoided. Further, the specific form of the cooling pipe 320 is not particularly limited, and may be selected by those skilled in the art according to actual needs, and may include, for example, a first straight pipe 321, a ring pipe 322, and a second straight pipe 323, wherein one end of the first straight pipe 321 is connected to the cooling unit 310, one end of the ring pipe 322 is connected to the other end of the first straight pipe 321, one end of the second straight pipe 323 is connected to the other end of the ring pipe 322, and at least a portion of the ring pipe 322 and the second straight pipe 323, and at least a portion of the first straight pipe 321 are disposed inside the sample container 100. This can further improve the cooling effect and cooling efficiency of the dispersing agent by the cooling pipe. It should be noted that the relative positions of the cooling pipe of the cooling device and the stirring portion of the stirring device in the sample container are not particularly limited, and those skilled in the art can select the relative positions according to actual needs, for example, when the stirring device is a magnetic stirrer, the cooling pipe is located at the upper portion of the stirring portion, when the stirring device is a paddle stirrer, the stirring portion may be arranged in parallel with the cooling pipe, for example, when the cooling pipe includes a first straight pipe, a ring pipe and a second straight pipe, the stirring portion may be arranged in parallel with the first straight pipe and/or the second straight pipe and located above the ring pipe. Further, regardless of the types of the stirring device and the cooling device, it is necessary to ensure that the stirring portion does not contact the cooling pipe.
According to the utility model discloses an embodiment, ultrasonic dispersion device 400 includes ultrasonic wave generating device 410 and ultrasonic probe 420, and ultrasonic wave generating device 410 links to each other with ultrasonic probe 420, and inside ultrasonic probe 420 stretched into sample container 100, preferably, inside ultrasonic probe 420 stretched into sample container from sample container 100 axis position, and was suitable for and carries out the supersound dispersion to the sample in the sample container through ultrasonic probe. The inventors have found that the ultrasonic dispersion apparatus has a good dispersion ability and can sufficiently disperse the sample and the surface treatment agent in the dispersion medium. It should be noted that the specific type of the ultrasonic dispersing device 400 is not particularly limited, and may be selected by those skilled in the art according to actual needs, such as a probe type ultrasonic generator, which has strong dispersing ability and is several times better than that of a conventional ultrasonic cleaning machine, and can promote the powder sample to be sufficiently dispersed in the dispersing agent with the surfactant added and form a suspension. Further, the relative positional relationship between the ultrasonic probe and the stirring section and the cooling pipe is not particularly limited, and those skilled in the art can determine the relative positional relationship depending on the specific type of the stirring apparatus and the cooling pipe. Further, the distance between the ultrasonic probe 420 and the liquid level in the sample container 100 is not particularly limited as long as the height of the sample container 100 is a percentage, and may be selected by those skilled in the art according to actual needs, for example, 5 to 20%, and further, for example, 5%, 8%, 10%, 12%, 15%, 17%, 20%. The inventors have found that if the distance between the ultrasonic probe and the liquid surface in the sample container is too small in percentage of the height of the sample container, that is, if the ultrasonic probe is close to the liquid surface in the sample container, the dispersion of the sample is likely to be uneven, and the uniformity of the dispersion of the obtained sample in the dispersion medium is affected, and if the distance between the ultrasonic probe and the liquid surface in the sample container is too high in percentage of the height of the sample container, the ultrasonic probe is close to the bottom of the sample container, which may impose a great demand on the structure of the stirring section and the cooling pipe, and increase the production cost of the. Furthermore, the distance between the ultrasonic probe and the bottom of the sample container is not less than 50% of the height of the sample container, so that the dispersing effect of the sample is improved, and the more uniformly dispersed sample solution is obtained.
According to the sample dispersing system provided by the embodiment of the utility model, the sample container, the stirring device, the cooling device and the ultrasonic dispersing device are combined together, and the strong dispersing capacity of the ultrasonic dispersing device is utilized, so that the powder sample which is difficult to disperse can be well dispersed under the stirring and mixing action of the stirring device; meanwhile, the stirring device can fully and uniformly mix the sample and the surfactant in the dispersing agent, so that a better ultrasonic dispersion effect is ensured, heat exchange can be rapidly carried out between the dispersed test solution and the cooling pipe, the cooling pipe of the cooling device can timely take away heat generated by ultrasonic dispersion, the temperature of the test solution is kept constant and uniform, the test solution with higher temperature is prevented from being introduced into the particle size distribution instrument, and further test deviation caused by temperature gradient due to the fact that the temperature of the test solution is higher than the temperature of a dispersion medium in the particle size instrument can be avoided; meanwhile, the test deviation caused by the deviation of the instrument background calibration value due to the temperature rise of the dispersion medium can be avoided, the test time of the test solution in the sample injector can be reduced, the secondary aggregation phenomenon of the sample particles in the analysis process is reduced, and the accuracy of the analysis test is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. A sample distribution system, comprising:
a sample container having a sample inlet, a surfactant inlet, a dispersant inlet, and a sample liquid outlet;
the stirring device comprises a stirring part and a control part, the stirring part is connected with the control part, and the stirring part is positioned in the sample container;
the cooling device comprises a cooling machine and a cooling pipe, the cooling machine is connected with one end of the cooling pipe, and the other end of the cooling pipe extends into the sample container;
the ultrasonic dispersion device comprises an ultrasonic generation device and an ultrasonic probe, wherein the ultrasonic generation device is connected with the ultrasonic probe, and the ultrasonic probe extends into the sample container.
2. The sample distribution system according to claim 1, wherein the distance between the ultrasonic probe and the liquid level in the sample container is 5-20% of the height of the sample container.
3. The sample distribution system according to claim 1 or 2, wherein the distance of the ultrasonic probe from the bottom of the sample container is not less than 50% of the height of the sample container.
4. The sample dispersal system as defined in claim 1 wherein the distance between the liquid level in the sample container and the top of the sample container is between 5% and 20% of the height of the sample container.
5. The sample distribution system according to claim 1, wherein the sample container is a glass or plastic cup, a ceramic cup, a metal cup.
6. The sample dispersion system of claim 1, wherein the stirring device is a magnetic stirrer or a paddle stirrer.
7. The sample distribution system according to claim 1, wherein the cooling machine is a constant temperature cooling machine and the cooling tube is a metal cooling tube.
8. The sample distribution system according to claim 7, wherein the metal cooling pipe comprises a first straight pipe, a ring pipe, and a second straight pipe, wherein one end of the first straight pipe is connected to the cooling machine, one end of the ring pipe is connected to the other end of the first straight pipe, one end of the second straight pipe is connected to the other end of the ring pipe, and at least a part of the ring pipe and the second straight pipe, and at least a part of the first straight pipe are disposed inside the sample container.
9. The specimen dispersion system of claim 1, wherein the ultrasonic dispersion device is a probe-type ultrasonic generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921294772.5U CN210646179U (en) | 2019-08-09 | 2019-08-09 | Sample dispersing system |
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| CN201921294772.5U CN210646179U (en) | 2019-08-09 | 2019-08-09 | Sample dispersing system |
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| CN210646179U true CN210646179U (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433716A (en) * | 2019-08-09 | 2019-11-12 | 崇义章源钨业股份有限公司 | Sample decentralized system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433716A (en) * | 2019-08-09 | 2019-11-12 | 崇义章源钨业股份有限公司 | Sample decentralized system |
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