CN212540052U

CN212540052U - Laser particle analyzer capable of automatically sampling

Info

Publication number: CN212540052U
Application number: CN202021411159.XU
Authority: CN
Inventors: 韩广乾; 杨涛; 柳钟丽
Original assignee: Shanghai Yinhuang Technology Co ltd
Current assignee: Shanghai Yinhuang Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-02-12
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a but laser particle analyzer of automatic sampling, including shell, sampling device, broken chamber, laser room, signal collection device, measuring chamber and numerical control structure, the top of shell is fixed with sampling device and broken chamber, and broken chamber is located one side of sampling device, the internally mounted of shell has laser room and measuring chamber, and the measuring chamber is located one side of laser room, the internally mounted of shell has signal collection device, and signal collection device is located one side of measuring chamber, the internally mounted of laser room has collimater and photochopper, and the photochopper is located one side of collimater, the front of shell is fixed with the numerical control structure. The utility model discloses an install the photochopper, can adjust the inside light source luminance of device, guarantee that the sample is carrying out the shading degree in the granularity testing process at the target range, avoid too high shading degree to reduce the dispersion efficiency of sample in the measuring chamber, and then guarantee the accuracy of the final testing result of device.

Description

Laser particle analyzer capable of automatically sampling

Technical Field

The utility model relates to a particle analyzer technical field specifically is a laser particle analyzer that can take a sample automatically.

Background

The laser particle analyzer is a machine for detecting the particle size according to the scattering principle of light, and because laser has strong monochromaticity and directivity, the laser can move along a straight line in an unhindered space range all the time, but when the laser encounters particle blocking in the moving process, part of the laser can be scattered, the propagation direction of scattered light and the propagation direction of a main light beam form a certain included angle, the size of the included angle is in decisive relation with the size of the particle size of the particles, and the larger the particle size is, the smaller the included angle is; the smaller the particle size is, the larger the included angle is, and the particle size distribution condition can be deduced according to the size of the distribution aperture diameter of the collected light beam, so that the particle size detection work is completed.

The existing device has the defects that: the existing laser particle size analyzer can lack corresponding shading treatment measures in the using process, so that the laser particle size analyzer is used for detecting the particle size of sample particles, the dispersion efficiency of the sample particles in the device is low when the sample particles are optically detected due to overhigh exposure, the particle size distribution of the sample particles of the device is deviated, and the accuracy of the detection result of the device is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but laser particle analyzer of automatic sampling to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a but laser particle analyzer of automatic sampling, includes shell, sampling device, broken chamber, laser room, signal collection device, measurement room and numerical control structure, the top of shell is fixed with sampling device and broken chamber, and broken chamber is located one side of sampling device, the internally mounted of shell has laser room and measurement room, and the measurement room is located one side of laser room, the internally mounted of shell has signal collection device, and signal collection device is located one side of measurement room, the internally mounted of laser room has collimater and photochopper, and the photochopper is located one side of collimater, the front of shell is fixed with the numerical control structure, the inside of photochopper is equipped with the light-passing board, and one side of light-passing board is fixed with the lever through the installed part, and there is telescopic baffle at the both ends of lever through spring coupling, and telescopic baffle's length will be longer than the light-passing board.

Preferably, the supporting legs are installed at the bottom of the shell, the sealing door is movably installed on the front face of the shell through a hinge, and the sealing door is located on one side of the numerical control structure.

Preferably, sampling device's internally mounted has the sample container, and the surface of sample container is equipped with the scale mark, and the inside extension of sample container has the sampling tube, and conveyer is installed through the bearing in the top of sampling tube, and conveyer's top is connected with broken motor's output.

Preferably, the internally mounted in broken chamber has broken motor, the top in broken chamber is fixed with a set of fan through the bolt, be fixed with the dust board through the bolt on the inner wall in broken chamber, broken pole is installed to the below run through the dust board of broken motor.

Preferably, a laser transmitter is fixed on the inner wall of one side of the laser chamber, a beam expander is fixed on the inner wall of one side of the laser chamber through a bolt, and the beam expander is located on the outer side of the laser transmitter.

Preferably, a fourier lens and a photodetector are fixed inside the signal collection device, and the photodetector is located on one side of the fourier lens.

Preferably, the collimator is internally provided with a sliding chute, the bottom of the sliding chute is fixed at the bottom of the laser chamber, and an adjusting handle penetrates through the shell and is connected to the upper side of the collimator.

Preferably, the inside of numerical control structure is equipped with the display screen, and the display screen is inside to have three display area, the internally mounted of numerical control structure has the data transmission interface, and the data transmission interface is located the below of display screen, and one side of data transmission interface is fixed with the controller, and the controller is located the below of display screen equally.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in install the photochopper, the light-passing board is installed in proper order to device inside, lever and telescopic baffle, the photochopper can be adjusted the light source luminance inside the device, guarantee that the sample is in the target range of shading degree in the granularity testing process that carries out, because too high shading degree can reduce the dispersion efficiency of sample in the measuring chamber, thereby lead to wrong sample granule particle size distribution, influence the accuracy of the final testing result of device, wherein the light-passing board can make the parallel light beam after expanding the beam expander to pass through the photochopper, project in the measuring chamber, accomplish the detection of sample granule granularity; the lever in the device simulates the principle of a seesaw, when one end of the lever is stressed to move downwards, the other end of the lever can reversely rise, and the telescopic springs at the two ends of the lever can drive the telescopic baffles to expand, so that the telescopic baffles above and below the light-transmitting plate can be synchronously expanded, the light-transmitting areas of the light-transmitting plate are ensured to be uniform, and the accuracy of a detection result of the device is ensured; the inside telescopic baffle of device adjusts the light transmission area of light-passing board through flexible, and then accomplishes the regulation of light-shading degree, guarantees the dispersion efficiency of sample, guarantees the accuracy of device testing result.

Drawings

Fig. 1 is an overall sectional view of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a schematic view of the structure of the light chopper of the present invention.

In the figure: 1. a housing; 101. supporting legs; 102. a sealing door; 2. a sampling device; 201. a sample container; 202. a sampling tube; 203. a conveyor belt; 204. scale lines; 3. a crushing chamber; 301. a crushing motor; 302. a fan; 303. a dust guard; 304. a breaking bar; 4. a laser chamber; 401. a laser transmitter; 402. a beam expander; 5. a signal collection device; 501. a Fourier lens; 502. a photodetector; 6. a collimator; 601. a chute; 602. adjusting the handle; 7. a light chopper; 701. a light-transmitting plate; 702. a lever; 703. a telescopic baffle; 8. a measurement chamber; 9. a numerical control structure; 901. a display screen; 902. a controller; 903. and a data transmission interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an embodiment: a laser particle analyzer capable of automatically sampling comprises a shell 1, a sampling device 2, a crushing cavity 3, a laser chamber 4, a signal collecting device 5, a measuring chamber 8 and a numerical control structure 9, wherein the sampling device 2 and the crushing cavity 3 are fixed above the shell 1, the crushing cavity 3 is positioned on one side of the sampling device 2, the sampling device 2 realizes automatic sampling of the device through rotation of a sampling tube 202, manual sample feeding is not needed, and convenience of the device is improved; the crushing cavity 3 can crush large particles or blocks bonded by damp in a sample, so that the sample capacity is pulverized when the device detects the large particles or the blocks, the block is prevented from interfering the device to analyze the sample strength, the accuracy of the detection result of the device is ensured, the laser chamber 4 and the measuring chamber 8 are arranged in the shell 1, the measuring chamber 8 is positioned on one side of the laser chamber 4, and the laser chamber 4 can emit laser outwards to provide a light source for the device to detect the sample granularity; the broken powder sample enters the measuring chamber 8 under the action of wind power, laser irradiates the surface of the sample at the moment, and is projected inside the signal collecting device 5 by means of the scattering and diffraction principles of light to complete subsequent information collection, the signal collecting device 5 is installed inside the shell 1, the signal collecting device 5 is located on one side of the measuring chamber 8, the signal collecting device 5 can convert photoelectric signals of the laser projected from the measuring chamber 8, and further collect relevant particle size information of the sample, the collimator 6 and the light chopper 7 are installed inside the laser chamber 4, the light chopper 7 is located on one side of the collimator 6, and the collimator 6 can enable the laser emitted from the laser chamber 4 to enter the measuring chamber 8 with the maximum efficiency in a coupling mode, so that the deflection of the laser light in the traveling direction is avoided, and the detection result of the sample is influenced; the light chopper 7 can adjust the brightness of the light source in the device to ensure that the light shading degree of the sample is in a target range in the process of detecting the granularity, because the excessively high light shading degree can reduce the dispersion efficiency of the sample in the measuring chamber 8 to cause wrong particle size distribution of sample particles, the front of the shell 1 is fixed with the numerical control structure 9, the numerical control structure 9 can control the working state of the internal elements of the device through a programming system, so that the operation of the device becomes simple and convenient to use, and the practicability of the device is improved, the light chopper 7 is internally provided with the light transmission plate 701, the light transmission plate 701 can enable parallel light beams diffused by the beam expander 402 to be projected into the measuring chamber 8 through the light chopper 7 to finish the detection of the granularity of the sample particles, one side of the light transmission plate 701 is fixed with the lever 702 through the mounting piece, and the lever 702 simulates the principle of a seesaw, when the one end atress at lever 702 moved down, the other end can rise in reverse, the expanding spring at lever 702 both ends can drive the expansion of retractable baffle 703 this moment, and then realize retractable baffle 703 above and below and can expand in step, ensure the even unanimity of light-passing board 701 light area, guarantee the accuracy of device testing result, there is retractable baffle 703 at the both ends of lever 702 through spring coupling, and retractable baffle 703's length will be longer than light-passing board 701, retractable baffle 703 adjusts light-passing board 701 light area through flexible, and then accomplish the regulation of light-shading degree, guarantee the dispersion efficiency of sample.

Furthermore, the bottom of the shell 1 is provided with a supporting leg 101, the front surface of the shell 1 is movably provided with a sealing door 102 through a hinge, the sealing door 102 is positioned on one side of the numerical control structure 9, and the supporting leg 101 can enable the device to be stably arranged on a working plane to perform corresponding sample particle size detection work; the sealing door 102 can be opened to allow the staff to take out the sample deposited inside the measuring chamber 8 and clean the measuring chamber 8, so as to facilitate the next detection operation.

Further, the internally mounted of sampling device 2 has sample container 201, the surface of sample container 201 is equipped with scale mark 204, the inside extension of sample container 201 has sampling tube 202, conveyer 203 is installed through the bearing in the top of sampling tube 202, and conveyer 203's top is connected with broken motor 301's output, sample container 201 is used for depositing the sample that waits to detect, scale mark 204 then can provide probably for the staff reads the volume of sample when placing the sample, conveyer 203 is then through being connected with broken motor 301, when broken motor 301 rotates, drive sampling tube 202 synchronous revolution, utilize the extrusion drive of the inside spiral leaf of sampling tube 202, force the sample in the sample container 201 to transfer to broken chamber 3, accomplish the automatic sampling of device.

Further, a crushing motor 301 is installed inside the crushing cavity 3, a group of fans 302 is fixed to the top of the crushing cavity 3 through bolts, a dust baffle plate 303 is fixed to the inner wall of the crushing cavity 3 through bolts, a crushing rod 304 is installed below the crushing motor 301 in a manner of penetrating through the dust baffle plate 303, and the model of the crushing motor 301 is a 60KTYZ motor which can provide a necessary power source for the rotation of the sampling tube 202 and the crushing rod 304; during the rotation process of the fan 302, certain wind power is generated to promote the sample particles entering the measuring chamber 8 to move, so that the sample particles are prevented from directly precipitating at the bottom of the measuring chamber 8, and the measurement work cannot be performed; the dust baffle plate 303 can block powdery particles in the crushing cavity 3, so that the powdery particles are prevented from entering the fan 302, and the fan blades in the fan 302 are prevented from being blocked to interfere the normal operation of the fan 302; when the crushing rod 304 rotates, the crushing blade on the surface can be driven to crush the contacted block sample, so that the sample is ensured to be powdered, and the particle size detection data of the sample is ensured not to be interfered by the block sample.

Further, a laser transmitter 401 is fixed on the inner wall of one side of the laser chamber 4, a beam expander 402 is fixed on the inner wall of one side of the laser chamber 4 through a bolt, the beam expander 402 is located on the outer side of the laser transmitter 401, and the laser transmitter 401 can transmit a laser beam outwards to provide a light source for detection work of the device; the beam expander 402 receives the output beam of the laser transmitter 401, and ensures the uniformity of the light source by expanding the diameter of the received laser to a larger parallel output beam.

Further, a fourier lens 501 and a photodetector 502 are fixed inside the signal collection device 5, the photodetector 502 is located on one side of the fourier lens 501, and the fourier lens 501 is a lens for eliminating aberration when the object is at infinity and the image is at a back focal plane, so as to ensure the clarity of optical imaging; after scattered light formed by the laser after passing through the measuring chamber 8 passes through the fourier lens 501, light with the same scattering angle is focused on the same radius of the photodetector 502, and when the particle size of the sample particles becomes smaller, the scattering declination becomes larger, the aperture radius also moves outwards, and the particle size distribution of the sample is further calculated.

Furthermore, a sliding groove 601 is arranged inside the collimator 6, the bottom of the sliding groove 601 is fixed at the bottom of the laser chamber 4, an adjusting handle 602 penetrates through the shell 1 and is connected above the collimator 6, the sliding groove 601 can facilitate the collimator 6 to adjust the focusing distance between the light source and the measuring chamber 8, and further the focusing of the device is adjusted, so that the imaging of the device can be clearer; the adjusting handle 602 is used to push the collimator 6 to complete the focusing operation.

Further, a display screen 901 is arranged inside the numerical control structure 9, three display areas are arranged inside the display screen 901, a data transmission interface 903 is arranged inside the numerical control structure 9, the data transmission interface 903 is located below the display screen 901, a controller 902 is fixed on one side of the data transmission interface 903, the controller 902 is also located below the

display screen

901, and 3 display areas are arranged in the display screen 901 and are respectively used for displaying the temperature, the air pressure and the imaging result inside the device, and the imaging result can be directly displayed because the temperature and the air pressure can affect the reliability of the data quality of the device, so that a worker can conveniently and directly view the data; the controller 902 is electrically connected with the crushing motor 301, the fan 302, the laser emitter 401, the signal collecting device 5 and the light chopper 7 through wires, so that the working state of the device is controlled, and the operation of the device is simplified; the data transmission interface 903 can transfer the imaging result detected inside the numerical control structure 9, so that the data can be transmitted and stored conveniently.

The working principle is as follows: when the staff utilizes this device to carry out sample granule granularity and examines, at first need start laser room 4, utilize collimator 6 and photochopper 7 to carry out the regulation back of focus alignment and shading degree respectively afterwards, utilize sampling device 2 to shift the sample ration that awaits measuring to broken chamber 3 in, powdered sample after the follow-up breakage shifts to measuring chamber 8 under the wind-force effect in, move, lead to taking place the scattering through the inside parallel laser beam of measuring chamber 8, scattered light beam gets into signal collection device 5 afterwards, after accomplishing information collection, demonstrate final sample granule granularity distribution situation through numerical control structure 9, obtain comparatively accurate result.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Claims

1. The utility model provides a but laser particle sizer of automatic sampling, includes shell (1), sampling device (2), broken chamber (3), laser room (4), signal collection device (5), measuring chamber (8) and numerical control structure (9), its characterized in that: the top of shell (1) is fixed with sampling device (2) and broken chamber (3), and broken chamber (3) is located one side of sampling device (2), the internally mounted of shell (1) has laser room (4) and measuring chamber (8), and measures chamber (8) and be located one side of laser room (4), the internally mounted of shell (1) has signal collection device (5), and signal collection device (5) are located one side of measuring chamber (8), the internally mounted of laser room (4) has collimator (6) and photochopper (7), and photochopper (7) are located one side of collimator (6), the front of shell (1) is fixed with numerical control structure (9), the inside of photochopper (7) is equipped with light-passing board (701), one side of light-passing board (701) is fixed with lever (702) through the installed part, there are telescopic baffle (703) at the both ends of lever (702) through spring coupling, and the length of the telescopic baffle (703) is longer than that of the light-transmitting plate (701).

2. An automatically sampling laser particle sizer of claim 1, wherein: supporting legs (101) are installed to the bottom of shell (1), there is sealing door (102) in the front of shell (1) through hinge movable mounting, and sealing door (102) are located one side of numerical control structure (9).

3. An automatically sampling laser particle sizer of claim 1, wherein: the internally mounted of sampling device (2) has sample container (201), and the surface of sample container (201) is equipped with scale mark (204), and the inside extension of sample container (201) has sampling tube (202), and conveyer (203) is installed through the bearing in the top of sampling tube (202), and the top of conveyer (203) is connected with the output of broken motor (301).

4. An automatically sampling laser particle sizer of claim 1, wherein: the internally mounted of broken chamber (3) has broken motor (301), the top in broken chamber (3) is fixed with a set of fan (302) through the bolt, be fixed with dust board (303) through the bolt on the inner wall in broken chamber (3), broken pole (304) are installed in the below run through dust board (303) of broken motor (301).

5. An automatically sampling laser particle sizer of claim 1, wherein: be fixed with laser emitter (401) on the one side inner wall of laser room (4), be fixed with beam expander (402) through the bolt on the one side inner wall of laser room (4), and beam expander (402) are located the outside of laser emitter (401).

6. An automatically sampling laser particle sizer of claim 1, wherein: a Fourier lens (501) and a photoelectric detector (502) are fixed inside the signal collecting device (5), and the photoelectric detector (502) is positioned on one side of the Fourier lens (501).

7. An automatically sampling laser particle sizer of claim 1, wherein: the inside of collimater (6) is equipped with spout (601), and the bottom of spout (601) is fixed in the bottom of laser room (4), the top of collimater (6) is run through shell (1) and is connected with regulation handle (602).

8. An automatically sampling laser particle sizer of claim 1, wherein: the numerical control display screen (901) is arranged inside the numerical control structure (9), three display areas are arranged inside the display screen (901), a data transmission interface (903) is installed inside the numerical control structure (9), the data transmission interface (903) is located below the display screen (901), a controller (902) is fixed to one side of the data transmission interface (903), and the controller (902) is also located below the display screen (901).