Nanometer particle size measuring equipment

Abstract

The utility model discloses nanometer particle size measuring equipment which comprises a base, a laser light source and a processor are arranged on one side of the base, a polarizer is arranged on one side of the laser light source, a sample detection light channel is arranged at one end of the polarizer, a conveying belt is arranged on the lower portion in the sample detection light channel, and a feeding hopper is arranged in the middle of the upper side of the sample detection light channel. A first scattered light analyzer, a second scattered light analyzer, a third scattered light analyzer and a fourth scattered light analyzer are further arranged on the base through a lifting mechanism and a plurality of lifting plates. Then a conveyor belt arranged at the lower part of the product detection light channel is used for carrying out horizontal conveying displacement on the particulate matters, the polarized light forms diffuse reflection in a detection area, polarized scattered light enters scattered light analyzers at different angles and transmits information to a processor, and the processor analyzes the information acquired by the scattered light analyzers; therefore, the particle size of the particles is obtained.

Description

Technical Field

[0001] This utility model relates to the field of particle size measurement equipment technology, specifically a nanoparticle size measurement device. Background Technology

[0002] The particle size of nanoparticles is primarily measured using electron microscopy and various dynamic light scattering methods based on the theory of dynamic light scattering. When nanoparticles are suspended in a liquid, they undergo random motion due to the disordered impacts from a large number of surrounding liquid molecules; this motion is called Brownian motion. During Brownian motion, the scattered light from nanoparticles pulsates. Since the pulsation frequency is related to the diffusion coefficient of the nanoparticles, and the diffusion coefficient is related to the particle size, dynamic light scattering methods can be used to measure the particle size.

[0003] A prior art nanoparticle size measurement system (application number 201810243972.1) uses a laser source to emit laser light from an incident device. This system simultaneously measures the same scattering center of the nanoparticles under test at multiple angles, obtaining more effective information about the scattering center, especially for bimodal particle systems, resulting in more accurate measurements. Furthermore, the system incorporates a polarized optical path, measuring the change in polarization direction of the incident light after passing through the scatterer to determine the aspect ratio of the rod-shaped nanoparticles. However, this system makes it inconvenient to adjust the height and angle of the scattered light analyzer, thus affecting measurement efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a nanoparticle size measurement device to solve the problem in the prior art that it is inconvenient to adjust the height and angle of the scattered light analyzer, thus affecting the measurement efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nanoparticle size measuring device, comprising a base, a laser source and a processor on the upper side of one end of the base, a polarizer on one side of the laser source, a sample detection optical channel at one end of the polarizer, a conveyor belt at the lower part of the sample detection optical channel, a feeding hopper in the middle of the upper side of the sample detection optical channel, and a first scattered light analyzer, a second scattered light analyzer, a third scattered light analyzer and a fourth scattered light analyzer on the upper side of the middle part of the base via a lifting mechanism and multiple lifting plates, and photoelectric probes on the sides of the first scattered light analyzer, the second scattered light analyzer, the third scattered light analyzer and the fourth scattered light analyzer.

[0006] Furthermore, the conveyor belt is provided with conveyor wheels at both ends, and one end of the conveyor wheel is connected to a first motor through a first gear set.

[0007] Furthermore, the first motor is fixedly installed on the outer wall of the sample detection light channel, and the sample detection light channel is provided with a rectangular channel.

[0008] Furthermore, the lifting mechanism includes a lower support mounted on the upper side of the base, and an inner support is provided inside the lower support via a lead screw thread. The lower end of the lead screw is connected to a second motor. One end of the inner support slides through the middle of the lower support, and the other end of the inner support is also slidably mounted with a guide rod.

[0009] Furthermore, the upper end of the inner support is rotatably connected to the lower part of the lifting plate via a connecting seat and a bearing, and a third motor is connected to the outside of the connecting seat via a second gear set.

[0010] Furthermore, the third motor is fixedly mounted on the upper outer wall of the inner bracket via a mounting base, and the inner bracket includes a base plate and columns.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention places the particulate matter to be detected in the sample detection optical channel, uses a polarizer to provide detection polarized light, and then uses a conveyor belt at the bottom of the sample detection optical channel to horizontally transport and displace the particulate matter. The polarized light forms diffuse reflection in the detection area, and the polarized scattered light enters the scattered light analyzers at different angles and transmits the information to the processor. The processor analyzes the information collected by multiple scattered light analyzers to obtain the particle size of the particulate matter.

[0013] This invention utilizes a first scattered light analyzer, a second scattered light analyzer, a third scattered light analyzer, and a fourth scattered light analyzer, with each of these analyzers having a different angle to the detection area within the detection light channel. This enables the acquisition and processing of polarized scattered light from multiple angles, which is beneficial for improving detection accuracy.

[0014] This utility model includes a lower bracket set on the upper side of the base through a lifting mechanism. The lower bracket has an inner bracket inside it through a screw thread. The lower end of the screw is connected to a second motor. One end of the inner bracket slides through the middle of the lower bracket, and the other end of the inner bracket is also slidably set with a guide rod. This allows the inner bracket to be raised and lowered by driving the screw, thereby adjusting the height of the lifting plate and the scattered light analyzer, which is beneficial to improving the efficiency of information acquisition by the scattered light analyzer. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1This is a first-view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the lower structure of the scattered light analyzer of this utility model;

[0019] Figure 4 This is a schematic diagram illustrating the principle of this utility model.

[0020] In the diagram: 1. Base; 2. Sample detection optical channel; 3. Laser light source; 4. Polarizer; 5. Lifting plate; 6. First scattered light analyzer; 7. Second scattered light analyzer; 8. Third scattered light analyzer; 9. Fourth scattered light analyzer; 10. Processor; 11. Feed hopper; 12. Conveyor belt; 13. First gear set; 14. First motor; 15. Lower support; 16. Inner support; 17. Guide rod; 18. Lead screw; 19. Second motor; 20. Connecting seat; 21. Second gear set; 22. Third motor; 23. Photoelectric probe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4In this embodiment of the present invention, a nanoparticle size measuring device includes a base 1. A laser light source 3 and a processor 10 are provided on the upper side of one end of the base 1. A polarizer 4 is provided on one side of the laser light source 3. A sample detection optical channel 2 is provided at one end of the polarizer 4. A conveyor belt 12 is provided in the lower part of the sample detection optical channel 2. Conveyor wheels are provided at both ends of the conveyor belt 12. One end of the conveyor wheel is connected to a first motor 14 through a first gear set 13. The first motor 14 is fixedly installed on the outer wall of the sample detection optical channel 2. The sample detection optical channel 2 has a rectangular channel to facilitate the horizontal conveying of particles for measurement. A feeding hopper 11 is provided in the middle of the upper side of the sample detection optical channel 2. The upper side of the middle of the base 1 is also connected to a lifting mechanism and multiple lifting devices. The lowering plate 5 is equipped with a first scattered light analyzer 6, a second scattered light analyzer 7, a third scattered light analyzer 8, and a fourth scattered light analyzer 9. Each of the first scattered light analyzer 6, the second scattered light analyzer 7, the third scattered light analyzer 8, and the fourth scattered light analyzer 9 is equipped with a photoelectric probe 23. The angles between the multiple scattered light analyzers and the detection area in the detection light channel are different, thereby realizing the acquisition and processing of polarized scattered light from multiple angles, which is beneficial to improving the detection accuracy. The polarized scattered light enters the scattered light analyzers at different angles and transmits the information to the processor 10. The processor 10 analyzes the information acquired by the multiple scattered light analyzers and displays it on the display screen to obtain the particle size of the particulate matter.

[0023] like Figure 1 and Figure 3 As shown, in order to improve the efficiency of information acquisition by the scattered light analyzer, the lifting mechanism includes a lower support 15 set on the upper side of the base 1. The lower support 15 has an inner support 16 threaded through a lead screw 18. The lower end of the lead screw 18 is connected to a second motor 19. One end of the inner support 16 slides through the middle of the lower support 15, and the other end of the inner support 16 is also slidably set with a guide rod 17. This allows the inner support 16 to be raised and lowered by the lead screw 18, thereby adjusting the height of the lifting plate 5 and the scattered light analyzer, which is beneficial to improving the efficiency of information acquisition by the scattered light analyzer.

[0024] like Figure 2 and Figure 3 As shown, in order to meet the information acquisition needs at different angles, the upper end of the inner bracket 16 is rotatably connected to the lower part of the lifting plate 5 via a connecting seat 20 and a bearing. The outer side of the connecting seat 20 is connected to a third motor 22 via a second gear set 21. The third motor 22 is fixedly installed on the outer wall of the upper end of the inner bracket 16 via a mounting seat. The inner bracket 16 includes a base plate and a column, so that the lifting plate 5 can be horizontally rotated and adjusted by the third motor 22 and the second gear set 21, thereby enabling the horizontal rotation adjustment of the diffused light analyzer, which is convenient for meeting the information acquisition needs at different angles.

[0025] The working principle and usage process of this utility model are as follows: When in use, the particulate matter to be detected is placed in the sample detection light channel 2. The polarizer 4 provides detection polarized light, and then the conveyor belt 12 provided at the lower part of the sample detection light channel 2 is used to horizontally transport and displace the particulate matter. The polarized light forms diffuse reflection in the detection area, and the polarized scattered light enters the scattered light analyzers at different angles and transmits the information to the processor 10. The processor 10 analyzes the information collected by multiple scattered light analyzers and displays it on the display screen to obtain the particle size of the particulate matter.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nanoparticle size measurement apparatus comprising a base (1) characterised in that: The base (1) has a laser light source (3) and a processor (10) on one side. A polarizer (4) is provided on one side of the laser light source (3). A sample detection light channel (2) is provided at one end of the polarizer (4). A conveyor belt (12) is provided in the lower part of the sample detection light channel (2). The base (1) also has a first scattered light analyzer (6), a second scattered light analyzer (7), a third scattered light analyzer (8) and a fourth scattered light analyzer (9) on the upper side of the middle part through a lifting mechanism and multiple lifting plates (5). A photoelectric probe (23) is provided on the side of the first scattered light analyzer (6), the second scattered light analyzer (7), the third scattered light analyzer (8) and the fourth scattered light analyzer (9).

2. The apparatus of claim 1, wherein: The conveyor belt (12) has conveyor wheels at both ends, and one end of the conveyor wheel is connected to the first motor (14) via the first gear set (13).

3. The apparatus of claim 2, wherein: The first motor (14) is fixedly installed on the outer wall of the sample detection light channel (2), and the sample detection light channel (2) is provided with a rectangular channel.

4. The apparatus of claim 1, wherein: The lifting mechanism includes a lower support (15) set on the upper side of the base (1). The lower support (15) has an inner support (16) threaded through a screw (18). The lower end of the screw (18) is connected to a second motor (19). One end of the inner support (16) slides through the middle of the lower support (15).

5. A nanoparticle size measurement apparatus according to claim 4, wherein: The upper end of the inner support (16) is rotatably connected to the lower part of the lifting plate (5) through the connecting seat (20) and bearing. The outer side of the connecting seat (20) is connected to the third motor (22) through the second gear set (21).

6. A nanoparticle size measurement apparatus according to claim 5, wherein: The third motor (22) is fixedly installed on the upper outer wall of the inner bracket (16) by a mounting base. The inner bracket (16) includes a base plate and a column.

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