A laser particle size analyzer
By introducing a circulating cleaning system and an ultrasonic vibrator into the laser particle size analyzer, the problem of pipeline residue affecting accuracy was solved, pipeline cleaning and sample dispersion were achieved, and the accuracy of detection was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI JIAN TESTING SERVICE CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-26
AI Technical Summary
After use, some of the test material may remain in the detection pipeline of the laser particle size analyzer, affecting the accuracy of subsequent tests.
A laser particle size analyzer was designed. The analyzer body is connected to the cleaning water tank through the circulation inlet and outlet pipes. The clean water in the cleaning water tank is pumped into the detection pipeline for rinsing by the circulation pump. After being filtered by the filter element in the cleaning return component, the water flows back into the water tank to maintain the cleanliness of the water tank. At the same time, the sample in the sample cell is processed by an ultrasonic vibrator and stirring blades.
Effective cleaning of the testing pipeline keeps it clean and improves testing accuracy. The combination of ultrasonic waves and stirring blades ensures sample dispersion and enhances the precision of test results.
Smart Images
Figure CN224416660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of particle size measurement equipment technology, specifically a laser particle size analyzer. Background Technology
[0002] Laser particle size analysis is one of the mainstream methods in the field of particle measurement. It infers particle size distribution by measuring the scattering characteristics of laser light by particles. In recent years, with the development of high-precision optical components and high-speed data processing technology, the measurement range and accuracy of laser particle size analyzers have been significantly improved, and they are widely used in the quality control and research and development of samples such as powder materials, emulsions, and suspensions.
[0003] Laser particle size analyzers utilize laser light to scatter sample particles, calculating particle size and distribution by measuring the intensity and angle of the scattered light. Utility model patent CN206696142U discloses a laser particle size analyzer, comprising a sealed circulation tank, a measuring device, and a chassis. A fixed base is fixedly connected to the lower end of the chassis, and a sealed circulation tank is fixedly installed on one side inside the chassis. An XD-063 vacuum pump is fixedly installed at one end of the top of the sealed circulation tank, and a feed door is fixedly installed at the other end of the top of the sealed circulation tank. A discharge door is fixedly installed at one end of the sealed circulation tank, and a return door is fixedly installed on the surface of the sealed circulation tank below the discharge door. A measuring device is fixedly installed on the other side inside the chassis, and a sample tank is fixedly installed at one end of the measuring device. The top of the sample tank is connected to the discharge door of the sealed circulation tank via a feed pipe, and the bottom of the sample tank is connected to the return door of the sealed circulation tank via a return pipe. This invention employs a vacuum-sealed circulation method. First, the circulating water tank is sealed to create a closed circulation loop, reducing the impact of the external environment.
[0004] However, after use, some of the detection material may remain in the detection pipeline of this laser particle size analyzer, which affects the accuracy of subsequent detection. Therefore, a new laser particle size analyzer is proposed to solve the problems mentioned above. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a laser particle size analyzer that offers advantages such as easy cleaning of the detection pipeline. This solves the problem that common laser particle size analyzers often leave residual detection substances in the detection pipeline after use, affecting the accuracy of subsequent detections.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser particle size analyzer, comprising an analysis platform, an analyzer body fixedly installed on the top of the analysis platform, a circulation inlet fixedly installed on one side of the analyzer body, a circulation outlet fixedly installed on one side of the analyzer body, a circulation inlet pipe connected to the circulation inlet, a circulation outlet pipe connected to the circulation outlet, and a circulation cleaning assembly fixedly installed on the top of the analysis platform.
[0007] The circulating cleaning assembly includes a cleaning water tank fixedly installed on the top of the analysis platform, a cleaning output interface fixedly installed on one side of the cleaning water tank, and a cleaning return assembly fixedly installed on the top of the cleaning water tank. The cleaning output interface is adapted to the circulating inlet pipe.
[0008] The cleaning and reflux assembly includes a flange connecting plate bolted to the top of the cleaning water tank, a cleaning and reflux interface fixedly installed on the top of the flange connecting plate, an installation cylinder fixedly installed on the bottom of the flange connecting plate, a filter element slidably installed inside the installation cylinder, a bottom cover threaded to the bottom of the installation cylinder, and a mesh plate fixedly installed in the center of the bottom cover. The cleaning and reflux interface is compatible with the circulation outlet pipe.
[0009] This application adopts the above technical solution, which connects the analyzer body to the cleaning water tank through the circulation inlet pipe and circulation outlet pipe. The clean water inside the analyzer body is pumped into the detection pipeline by the circulation pump inside the cleaning water tank to flush the detection pipeline. Then, the cleaned water is filtered through the filter element in the cleaning return component and flows back to the cleaning water tank to maintain the cleanliness of the water in the cleaning water tank.
[0010] Furthermore, a water supply interface is fixedly installed on one side of the cleaning water tank, and a processing base plate is fixedly installed on the top of the analysis platform, with a limit ring fixedly installed on the top of the processing base plate.
[0011] The beneficial effect of adopting the above-mentioned further solution is that clean water will be injected into the cleaning water tank through the water replenishment interface.
[0012] Furthermore, an ultrasonic vibrator is fixedly installed on the inner bottom wall of the limiting ring, and a sample pool is placed inside the limiting ring.
[0013] The beneficial effect of adopting the above-mentioned further solution is that the sample cell is placed inside the limiting ring and contacts the top of the ultrasonic vibrator. When the ultrasonic vibrator is activated, it vibrates the detection solution inside the sample cell, thereby dispersing the particles in the solution and improving the detection accuracy.
[0014] Furthermore, a sample output interface adapted to the circulation inlet pipe is fixedly installed on one side of the sample cell, and a sample return interface adapted to the circulation outlet pipe is fixedly installed on the other side of the sample cell.
[0015] The beneficial effect of adopting the above-mentioned further solution is that during detection, the circulation inlet tube is connected to the sample output interface, and the circulation outlet tube is connected to the sample reflux interface, so that the particle solution in the sample cell is extracted into the analyzer body for particle size detection.
[0016] Furthermore, a mounting plate is fixedly installed on the top of the processing base plate, a mounting horizontal plate is fixedly installed on one side of the mounting plate, a stirring shaft is inserted through the top of the mounting horizontal plate, and stirring blades are fixedly installed at the bottom end of the stirring shaft.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the rotation of the stirring shaft drives the stirring blades to rotate, thereby stirring the sample in the sample cell.
[0018] Furthermore, a mounting top plate is fixedly installed on the top of the mounting upright plate, a guide rod is fixedly installed between the mounting horizontal plate and the mounting top plate, a lifting plate is slidably installed on the surface of the guide rod, and the stirring shaft is rotatably installed at the bottom of the lifting plate.
[0019] The beneficial effect of adopting the above-mentioned further solution is that the lifting plate slides on the surface of the guide rod, driving the stirring shaft to move up and down, raising the stirring blades to the outside of the sample cell, making it convenient to remove the sample cell and clean it.
[0020] Furthermore, a lifting screw is rotatably installed between the mounting horizontal plate and the mounting top plate. The lifting screw is threadedly connected to the lifting plate. A lifting motor is fixedly installed on the top of the mounting top plate, and the output shaft of the lifting motor is fixed to the top end of the lifting screw.
[0021] The beneficial effect of adopting the above-mentioned further solution is that the lifting motor drives the lifting screw to rotate, thereby moving the lifting plate up and down.
[0022] Furthermore, a stirring motor is fixedly installed on the top of the lifting plate, the output shaft of the stirring motor is fixedly connected to the top of the stirring shaft, a through hole is opened on the top of the mounting plate, a controller is fixedly installed on one side of the analyzer body, and a support leg is fixedly installed on the bottom of the analysis platform.
[0023] The beneficial effect of adopting the above-mentioned further solution is that the stirring motor drives the stirring shaft to rotate, which in turn drives the stirring blades to rotate.
[0024] Compared with the prior art, the present invention provides a laser particle size analyzer, which has the following advantages:
[0025] 1. This laser particle size analyzer connects the analyzer body to the cleaning water tank via a circulation inlet and outlet pipe. A circulating pump inside the analyzer pumps clean water from the cleaning water tank into the detection pipeline to flush it. The cleaned water is then filtered through a filter in the cleaning return assembly and returned to the cleaning water tank, maintaining the cleanliness of the water in the tank. This solves the common problem in laser particle size analyzers where residual detection substances easily remain in the detection pipeline after use, affecting the accuracy of subsequent detections.
[0026] 2. This laser particle size analyzer uses a stirring shaft that rotates at the bottom of a lifting plate. A lifting motor drives a lifting screw to rotate, which in turn lifts the lifting plate, making it easy to raise the stirring blades out of the sample cell and remove the sample cell for cleaning. Attached Figure Description
[0027] Figure 1 This is a front view of the structure of this utility model;
[0028] Figure 2 This is a front view of the structure of this utility model in its cleaned state;
[0029] Figure 3 This is a front cross-sectional view of the cleaning and reflux assembly of this utility model;
[0030] Figure 4 This is a three-dimensional view of the stirring shaft of this utility model.
[0031] In the diagram: 1. Analysis platform; 2. Analyzer body; 3. Circulation inlet; 4. Circulation outlet; 5. Circulation inlet pipe; 6. Circulation outlet pipe; 7. Cleaning water tank; 8. Cleaning output port; 9. Cleaning reflux assembly; 91. Flange connection plate; 92. Cleaning reflux port; 93. Mounting cylinder; 94. Filter element; 95. Bottom cover; 96. Mesh plate; 10. Water supply port; 11. Processing base plate; 12. Limiting ring; 121. Ultrasonic vibrator; 13. Sample cell; 14. Sample output port; 15. Sample reflux port; 16. Mounting upright plate; 17. Mounting horizontal plate; 18. Stirring shaft; 19. Stirring blades; 20. Mounting top plate; 21. Guide rod; 22. Lifting plate; 23. Lifting screw; 24. Lifting motor; 25. Stirring motor; 26. Through hole; 27. Controller; 28. Support leg. Detailed Implementation
[0032] Please see Figures 1 to 4The laser particle size analyzer in this embodiment includes an analysis platform 1, an analyzer body 2 fixedly installed on the top of the analysis platform 1, a circulation inlet 3 fixedly installed on one side of the analyzer body 2, a circulation outlet 4 fixedly installed on one side of the analyzer body 2, a circulation inlet pipe 5 connected to the circulation inlet 3, a circulation outlet pipe 6 connected to the circulation outlet 4, and a circulation cleaning component fixedly installed on the top of the analysis platform 1.
[0033] Specifically, the analyzer body 2 is a laser particle size analyzer. The laser particle size analyzer is equipped with a circulation pump adapted to the circulation inlet 3 and circulation outlet 4. The analyzer body 2 is equipped with a semiconductor laser, a collimating lens group, a Fourier lens group, and a multi-quadrant photodetector. After collimation, the light beam penetrates the sample. The scattered light from the particles is focused onto the detector array by the Fourier lens. The signals from each channel are converted by AD and then the autocorrelation function is calculated by the FPGA. Finally, the particle size distribution is inverted through Mie theory. The analyzer body 2 is existing technology, and its specific structure and working principle will not be described in detail in this paper.
[0034] The circulating cleaning component includes a cleaning water tank 7 fixedly installed on the top of the analysis platform 1, a cleaning output interface 8 fixedly installed on one side of the cleaning water tank 7, and a cleaning return component 9 fixedly installed on the top of the cleaning water tank 7. The cleaning output interface 8 is adapted to the circulating inlet pipe 5.
[0035] Specifically, the cleaning output interface 8 is connected to the circulation inlet pipe 5, and the cleaning return component 9 is connected to the circulation outlet pipe 6. The circulation pump inside the analyzer body 2 drives the clean water in the cleaning water tank 7 to flow inside the detection pipe, circulation inlet pipe 5 and circulation outlet pipe 6 inside the analyzer body 2, to flush the detection pipe and keep the detection pipe clean.
[0036] Please see Figure 3 and Figure 4 In this embodiment, the cleaning return assembly 9 includes a flange connecting plate 91 bolted to the top of the cleaning water tank 7, a cleaning return interface 92 fixedly installed on the top of the flange connecting plate 91, an installation cylinder 93 fixedly installed on the bottom of the flange connecting plate 91, a filter element 94 slidably installed inside the installation cylinder 93, a bottom cover 95 threadedly connected to the bottom of the installation cylinder 93, and a mesh plate 96 fixedly installed in the center of the bottom cover 95. The cleaning return interface 92 is adapted to the circulation outlet pipe 6. The water returning to the cleaning water tank 7 is first filtered through the filter element 94 to maintain the cleanliness of the water in the cleaning water tank 7. When the filter element 94 needs to be replaced, the flange connecting plate 91 is removed, the bottom cover 95 is unscrewed, and the filter element 94 can be replaced or cleaned. After the bottom cover 95 is installed, the flange connecting plate 91 is reinstalled on the top of the cleaning water tank 7.
[0037] The water tank 7 is equipped with a water supply interface 10 on one side, and the analysis platform 1 is equipped with a processing base plate 11 on the top. The processing base plate 11 is equipped with a limit ring 12 on the top.
[0038] Secondly, an ultrasonic vibrator 121 is fixedly installed on the inner bottom wall of the limiting ring 12, and a sample cell 13 is placed inside the limiting ring 12. When the sample cell 13 is placed in the limiting ring 12, the ultrasonic vibrator 121 is activated to vibrate the sample solution in the sample cell 13, making the particles more dispersed and ensuring the accuracy of the detection results.
[0039] Please see Figures 1 to 4 A sample output interface 14 adapted to the circulation inlet pipe 5 is fixedly installed on one side of the sample cell 13, and a sample return interface 15 adapted to the circulation outlet pipe 6 is fixedly installed on one side of the sample cell 13.
[0040] The processing base plate 11 has a mounting plate 16 fixedly installed on its top, and a mounting horizontal plate 17 fixedly installed on one side of the mounting plate 16. A stirring shaft 18 is inserted through the top of the mounting horizontal plate 17, and a stirring blade 19 is fixedly installed at the bottom of the stirring shaft 18. When the stirring shaft 18 moves downward, the stirring blade 19 extends into the sample pool 13. The stirring shaft 18 rotates, driving the stirring blade 19 to rotate, thus stirring the sample in the sample pool 13.
[0041] Meanwhile, a mounting top plate 20 is fixedly installed on the top of the mounting plate 16, and a guide rod 21 is fixedly installed between the mounting horizontal plate 17 and the mounting top plate 20. A lifting plate 22 is slidably installed on the surface of the guide rod 21, and the stirring shaft 18 is rotatably installed at the bottom of the lifting plate 22. The lifting plate 22 moves up and down on the surface of the guide rod 21, which in turn drives the stirring shaft 18 to move up and down.
[0042] A lifting screw 23 is rotatably mounted between the mounting horizontal plate 17 and the mounting top plate 20. The lifting screw 23 is threadedly connected to the lifting plate 22. A lifting motor 24 is fixedly mounted on the top of the mounting top plate 20, and the output shaft of the lifting motor 24 is fixed to the top end of the lifting screw 23. The lifting motor 24 drives the lifting screw 23 to rotate, which in turn moves the lifting plate 22 up and down, thereby adjusting the position of the stirring blade 19.
[0043] Secondly, a stirring motor 25 is fixedly installed on the top of the lifting plate 22, and the output shaft of the stirring motor 25 is fixedly connected to the top of the stirring shaft 18. A through hole 26 is opened on the top of the mounting plate 20. A controller 27 is fixedly installed on one side of the analyzer body 2, and a support leg 28 is fixedly installed on the bottom of the analysis platform 1.
[0044] Specifically, the stirring motor 25 drives the stirring shaft 18 to rotate, which in turn drives the stirring blades 19 to rotate, stirring the sample in the sample cell 13 and keeping the particles dispersed. When it is necessary to clean the sample cell 13, the lifting motor 24 drives the lifting screw 23 to rotate, which in turn drives the lifting plate 22 to move up and down, causing the stirring blades 19 to rise, and after the sample cell 13 is removed, it is cleaned.
[0045] The working principle of the above embodiment is as follows: The sample is placed into the sample cell 13, and the sample cell 13 is placed in the limiting ring 12. The ultrasonic vibrator 121 is started to vibrate the sample solution in the sample cell 13, making the particles more dispersed. At the same time, the stirring motor 25 drives the stirring shaft 18 to rotate, which in turn drives the stirring blades 19 to rotate, stirring the sample in the sample cell 13 to ensure the accuracy of the detection results. One end of the circulation inlet pipe 5 is connected to the sample output interface 14, and the circulation outlet pipe 6 is connected to the sample return interface 15. The analyzer body 2 is started, and the sample is sucked into the analyzer body 2 for particle size detection. After the detection is completed... The lifting motor 24 drives the lifting screw 23 to rotate, which in turn moves the lifting plate 22 up and down, causing the stirring blades 19 to rise. After the sample cell 13 is removed, it is cleaned. Then, the cleaning output interface 8 is connected to the circulation inlet pipe 5, and the cleaning return component 9 is connected to the circulation outlet pipe 6. The circulation pump inside the analyzer body 2 drives the clean water in the cleaning water tank 7 to flow inside the detection pipe, circulation inlet pipe 5, and circulation outlet pipe 6 inside the analyzer body 2, rinsing the detection pipe and keeping it clean. The water returning to the cleaning water tank 7 is first filtered through the filter element 94 to maintain the cleanliness of the water in the cleaning water tank 7.
Claims
1. A laser particle size analyzer characterized by, Includes an analysis platform (1), an analyzer body (2) fixedly installed on the top of the analysis platform (1), a circulation inlet (3) fixedly installed on one side of the analyzer body (2), a circulation outlet (4) fixedly installed on one side of the analyzer body (2), a circulation inlet pipe (5) connected to the circulation inlet pipe (3), a circulation outlet pipe (6) connected to the circulation outlet pipe (4), and a circulation cleaning assembly fixedly installed on the top of the analysis platform (1); The circulating cleaning assembly includes a cleaning water tank (7) fixedly installed on the top of the analysis platform (1), a cleaning output interface (8) fixedly installed on one side of the cleaning water tank (7), and a cleaning return assembly (9) fixedly installed on the top of the cleaning water tank (7). The cleaning output interface (8) is adapted to the circulating inlet pipe (5). The cleaning return assembly (9) includes a flange connecting plate (91) bolted to the top of the cleaning water tank (7), a cleaning return interface (92) fixedly installed on the top of the flange connecting plate (91), an installation cylinder (93) fixedly installed on the bottom of the flange connecting plate (91), a filter element (94) slidably installed inside the installation cylinder (93), a bottom cover (95) threadedly connected to the bottom of the installation cylinder (93), and a mesh plate (96) fixedly installed in the center of the bottom cover (95). The cleaning return interface (92) is adapted to the circulation outlet pipe (6).
2. A laser particle size analyzer according to claim 1, characterized in that: A water supply interface (10) is fixedly installed on one side of the cleaning water tank (7), and a processing base plate (11) is fixedly installed on the top of the analysis platform (1). A limit ring (12) is fixedly installed on the top of the processing base plate (11).
3. A laser particle size analyzer according to claim 2, wherein: An ultrasonic vibrator (121) is fixedly installed on the inner bottom wall of the limiting ring (12), and a sample pool (13) is placed inside the limiting ring (12).
4. A laser particle size analyzer according to claim 3, characterized in that: A sample output interface (14) adapted to the circulation inlet pipe (5) is fixedly installed on one side of the sample cell (13), and a sample return interface (15) adapted to the circulation outlet pipe (6) is fixedly installed on one side of the sample cell (13).
5. A laser particle size analyzer according to claim 4, characterized in that: The top of the processing base plate (11) is fixedly installed with an installation vertical plate (16), and a mounting horizontal plate (17) is fixedly installed on one side of the installation vertical plate (16). A stirring shaft (18) is passed through the top of the mounting horizontal plate (17), and a stirring blade (19) is fixedly installed at the bottom of the stirring shaft (18).
6. A laser particle size analyzer according to claim 5, characterized in that: A mounting top plate (20) is fixedly installed on the top of the mounting plate (16), and a guide rod (21) is fixedly installed between the mounting horizontal plate (17) and the mounting top plate (20). A lifting plate (22) is slidably installed on the surface of the guide rod (21), and a stirring shaft (18) is rotatably installed at the bottom of the lifting plate (22).
7. A laser particle size analyzer according to claim 6, characterized in that: A lifting screw (23) is rotatably installed between the mounting horizontal plate (17) and the mounting top plate (20). The lifting screw (23) is threadedly connected to the lifting plate (22). A lifting motor (24) is fixedly installed on the top of the mounting top plate (20). The output shaft of the lifting motor (24) is fixed to the top of the lifting screw (23).
8. A laser particle size analyzer according to claim 7, characterized in that: A stirring motor (25) is fixedly installed on the top of the lifting plate (22). The output shaft of the stirring motor (25) is fixedly connected to the top of the stirring shaft (18). A through hole (26) is opened on the top of the mounting plate (20). A controller (27) is fixedly installed on one side of the analyzer body (2). A support leg (28) is fixedly installed on the bottom of the analysis platform (1).