CN218445012U

CN218445012U - Forward optical path compensation device for Zeta potential measurement

Info

Publication number: CN218445012U
Application number: CN202222493628.2U
Authority: CN
Inventors: 秦福元; 刘伟; 申晋; 秦和义
Original assignee: Aopute Technology Shanghai Co ltd
Current assignee: Aopute Technology Shanghai Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-02-03
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a preceding optical path compensation arrangement that is used for Zeta current potential measurement, its technical scheme main points are: the utility model provides a preceding optical path compensation arrangement for Zeta current potential measurement, includes the support, the support is provided with the steering wheel, steering wheel rotating shaft is the level setting, the steering wheel output is provided with the steering wheel carousel, the steering wheel carousel is provided with the compensation structure who is used for realizing when Zeta current potential measurement compensation optical path forward, the compensation structure including set up in a plurality of set up in the shim of steering wheel carousel, and a plurality of shim thickness are and increase progressively in proper order or decrease progressively. The utility model discloses an add the compensating plate of different thickness in receiving the optical path for the measurement center of capillary sample cell and dull and stereotyped electrode sample cell all is located the center of sample cell, makes Zeta current potential analysis appearance can compatible two kinds of type sample cell, has improved Zeta current potential measurement result's accuracy.

Description

Forward light path compensation device for Zeta potential measurement

Technical Field

The utility model relates to a Zeta current potential measurement technical field especially involves a preceding light path compensation arrangement that is used for Zeta current potential measurement.

Background

The Zeta potential is a parameter for representing the repulsive force between colloidal particles, and the larger the Zeta potential is, the larger the repulsive force between particles is, the more stable the colloidal system is, so that the Zeta potential has important significance in measuring the Zeta potential in the fields of medicine and industrial latex surface reforming control, surfactant function analysis, pulp additive performance research and the like. The electrophoretic light scattering method has become a main method for measuring the Zeta potential due to the advantages of high measuring speed, no pollution to a measured sample and the like.

When the Zeta potential is measured by the electrophoretic light scattering method, a capillary sample cell is generally used for measuring samples under conventional conditions such as most non-polar dispersants, and a flat electrode sample cell is used for measuring samples under special conditions such as polar dispersants, corrosivity or high temperature, but the receiving positions of scattered light are different due to light refraction because of different optical thicknesses of the two sample cells, as shown in fig. 4, when the two sample cells are measured simultaneously, an incident light beam 7 enters the two sample cells, passes through the two electrode plates 11, passes through the corresponding sample cell and is scattered, and the receiving positions 9 of the scattered light of the flat electrode and the receiving positions 10 of the scattered light of the capillary sample cell are deviated, so that the precision is influenced. Therefore, the Zeta potential analyzer is not compatible with the measurement of the two types of sample cells.

Therefore, there is a need for improvement to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a preceding optical path compensation arrangement that is used for Zeta current potential measurement, through the shim that adds different thickness in receiving the optical circuit for the center of measurement of capillary sample cell and dull and stereotyped electrode sample cell all is located the center of sample cell, makes Zeta current potential analysis appearance can compatible two kinds of sample cell, has improved Zeta current potential measurement result's accuracy.

The above technical object of the utility model is realized with following technical scheme: the utility model provides a preceding optical path compensation arrangement for Zeta current potential measurement, includes the support, the support is provided with the steering wheel, steering wheel rotating shaft is the level setting, the steering wheel output is provided with the steering wheel carousel, the steering wheel carousel is provided with the compensation structure who is used for realizing when Zeta current potential measurement compensation optical path forward, the compensation structure including set up in a plurality of set up in the shim of steering wheel carousel, and a plurality of shim thickness are and increase progressively in proper order or decrease progressively.

The utility model discloses a further set up to: the steering engine turntable is provided with a plurality of jacks for the compensation pieces to be inserted, and the jacks surround the center of the steering engine turntable and are uniformly distributed.

The utility model discloses a further set up to: the jack inner wall is provided with in the position that is close to in the steering wheel and keeps off the ring, keep off the ring and supply the shim butt and inject shim mounted position.

The utility model discloses a further set up to: one of the jacks is arranged in a vacant way.

The utility model discloses a further set up to: the steering engine turntable is connected to the output end of the steering engine through bolts.

The utility model discloses a further set up to: the compensating plate is made of K9 glass.

To sum up, the utility model discloses following beneficial effect has:

the steering engine turntable rotates and reaches the position of the vacant jack positioned in the receiving light path, the jack is positioned as the initial position, the position has no compensating plate, when the capillary tube sample cell is used, the scattered light signal passes through the vacant jack, and the forward light path is not compensated. When the Zeta potential is measured by using the flat-plate electrode sample cell, the compensating plate with the corresponding thickness is selected according to the refractive index of the dispersing agent of the measured sample, the steering engine drives the turntable to automatically rotate to the corresponding position, the compensating plate is inserted into the forward light path to compensate, the scattering center is shifted to the center of the flat-plate electrode sample cell, and then the Zeta potential is measured.

By adding the compensating plates with different thicknesses into the receiving light path, the measurement centers of the capillary sample cell and the flat-plate electrode sample cell are both positioned at the center of the sample cell, so that the Zeta potential analyzer can be compatible with two types of sample cells, and the accuracy of the Zeta potential measurement result is improved.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic diagram of the measurement of Zeta potential in the present invention;

fig. 4 is a schematic diagram of the measurement of Zeta potential in the prior art.

The corresponding part names indicated by the numbers in the figures: 1. a support; 2. a steering engine; 3. a steering engine turntable; 4. a compensation plate; 5. a jack; 6. a baffle ring; 7. the speed of incident light; 8. a scattered light signal receiving probe; 9. a plate electrode scattered light receiving position; 10. a capillary sample cell scattered light receiving position; 11. an electrode sheet.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1, the utility model provides a preceding to light path compensation arrangement for Zeta current potential measurement, which comprises a bracket 1, support 1 is provided with

steering wheel

2, 2 rotation axial of steering wheel are the level setting, 2 outputs of steering wheel are provided with

steering wheel carousel

3, 3 bolted connection of steering wheel carousel in 2 outputs of steering wheel.

The steering wheel carousel 3 is provided with the compensation structure who is used for realizing compensation light path forward when the Zeta current potential is measured, the compensation structure including set up in a plurality of set up in the compensator 4 of steering wheel carousel 3, according to dispersant difference, refractive index difference, can process into the error that the thickness that corresponds arouses in order to compensate. And the thicknesses of the plurality of compensation plates 4 are sequentially increased or decreased. The steering wheel carousel 3 is seted up a plurality of jacks 5 that can supply compensator 4 to insert to establish, jack 5 encircles 3 central evenly distributed of steering wheel carousel to 5 inner walls of jack are close to the position in steering wheel 2 and are provided with and keep off ring 6, keep off ring 6 and supply 4 butts of compensator and inject 4 mounted positions of compensator.

In this embodiment, the material of the compensation plate 4 is K9 glass, and a plurality of compensation plates 4 are polished to different thicknesses, as shown in the following table.

Different thickness compensation sheet table corresponding to different refractive indexes

In this embodiment, the number of the insertion holes 5 is 8, one of the insertion holes is arranged in a vacant manner, the other part of the insertion holes 5 are sequentially inserted with the compensation pieces 4, and the thicknesses of the compensation pieces 4 are sequentially increased one by one.

In the embodiment where the thickness of the capillary sample cell is 4mm, the amount of scattering center shift caused by refraction of light in the sample cell is small. Therefore, the receiving light path is adjusted with the capillary sample cell as a reference, and the scattered light signal receiving probe 8 is aligned with the central region of the capillary sample cell to receive forward scattered light. The forward light path is adjusted, the forward scattering angle is fixed, and the forward scattering angle cannot be adjusted. If change flat electrode sample cell, because flat electrode sample cell thickness is 10mm, the scattering center offset that light refraction leads to in the sample cell can reach the millimeter level, obviously deviates from the scattering center position, if not compensate, then can't carry out the measurement of Zeta current potential, consequently, judge 4 hou dui degrees of compensator that use with the refractive index that capillary sample cell measured earlier.

The compensating plate 4 used by the forward optical path compensating device is made of K9 glass, and different thicknesses are designed according to different refractive indexes of the dispersing agent of the detected sample. The steering engine rotary table 3 rotates and reaches the position where the vacant jack 5 is located in the receiving light path, the positioning is the initial position, the compensating plate 4 is not arranged at the position, when the capillary sample cell is used, the scattered light signals pass through the vacant jack 5, and the forward light path is not compensated. When the Zeta potential is measured by using the flat-plate electrode sample cell, the compensating plate 4 with the corresponding thickness is selected according to the refractive index of the dispersing agent of the measured sample, the steering engine 2 drives the turntable to automatically rotate to the corresponding position, the compensating plate 4 is inserted into a forward optical path for compensation, the scattering center is enabled to deviate to the center of the flat-plate electrode sample cell, and then the Zeta potential is measured.

By adding the compensating plates 4 with different thicknesses into the receiving light path, the measurement centers of the capillary sample cell and the flat-plate electrode sample cell are both positioned at the center of the sample cell, so that the Zeta potential analyzer can be compatible with two types of sample cells, and the accuracy of a Zeta potential measurement result is improved.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, which may include other elements not expressly listed in addition to those listed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A forward optical path compensation device for Zeta potential measurement comprises a support (1), and is characterized in that: support (1) is provided with steering wheel (2), steering wheel (2) rotating shaft is the level setting, steering wheel (2) output is provided with steering wheel carousel (3), steering wheel carousel (3) are provided with the compensation structure who is used for realizing compensation light path forward when Zeta current potential is measured, the compensation structure including set up in a plurality of set up in compensation piece (4) of steering wheel carousel (3), and a plurality of compensation piece (4) thickness are and increase progressively in proper order or decrease progressively.

2. The forward optical path compensation device for Zeta potential measurement according to claim 1, characterized by: the steering engine turntable (3) is provided with a plurality of insertion holes (5) for the compensation pieces (4) to be inserted, and the insertion holes (5) are uniformly distributed around the center of the steering engine turntable (3).

3. A forward optical path compensation device for Zeta potential measurement according to claim 2, characterized by: jack (5) inner wall is close to the position in steering wheel (2) and is provided with fender ring (6), keep off ring (6) and supply shim (4) butt and inject shim (4) mounted position.

4. A forward optical path compensation device for Zeta potential measurement according to claim 3, characterized by: one of the jacks (5) is arranged in a vacant way.

5. The forward optical path compensation device for Zeta potential measurement according to claim 1, wherein: the steering engine turntable (3) is connected to the output end of the steering engine (2) through bolts.

6. The forward optical path compensation device for Zeta potential measurement according to claim 1, wherein: the compensating plate (4) is made of K9 glass.