CN207798628U - A kind of liquid particles counting and detecting device - Google Patents
A kind of liquid particles counting and detecting device Download PDFInfo
- Publication number
- CN207798628U CN207798628U CN201820244826.6U CN201820244826U CN207798628U CN 207798628 U CN207798628 U CN 207798628U CN 201820244826 U CN201820244826 U CN 201820244826U CN 207798628 U CN207798628 U CN 207798628U
- Authority
- CN
- China
- Prior art keywords
- condenser lens
- sheath
- light
- detecting device
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
It is larger to solve existing liquid particles counting and detecting device testing result error, as a result not accurate enough problem, the utility model provides a kind of liquid particles counting and detecting device, including the light source being sequentially placed, collimating mirror, condenser lens, sample cell, scatter light condenser lens, photoelectric sensor and photoelectric detective circuit, it is characterized in that, the sample cell is sheath flow pool, the sheath flow pool include for by prepare liquid capillary and on the outside of the capillary for the sheath stream pipeline by sheath fluid, the flow chamber that the prepare liquid and sheath fluid are co-flowed into is located at the focal point of condenser lens, the scattering light condenser lens is equipped with the light trapping for blocking direct rays on the surface of entering light side.The phenomenon that greatly reducing liquid particles by using sheath flow pool multiple particles block side by side or mutually when flowing through flow chamber, to improve the accuracy of counting and testing result.
Description
Technical field
The utility model belongs to the particulate matter detection field of liquid, more particularly to a kind of liquid particles counting and detecting device.
Background technology
The light method test philosophy at random that laser coherence is usually used in existing liquid particles counting and detecting device in the market
Tested, during the test most important problem, when the particle in liquid flows through sample cell, due to sample cell runner compared with
It is wide, it is likely that the phenomenon that appearance two is blocked side by side or mutually even more than liquid particles leverages test result
Accuracy；It, can not be as far as possible by focus incident light to sample cell meanwhile during light source incidence enters condenser lens
In, and the hot spot light distribution formed in sample cell is uneven, also will produce error to measurement result.
Invention content
To solve the problems, such as that existing liquid particles counting and detecting device testing result error is larger, result is not accurate enough, this
Utility model provides a kind of liquid particles counting and detecting device, and the technical solution of use is as follows：
A kind of liquid particles counting and detecting device, including the light source, condenser lens, sample cell, the scattering light that are sequentially placed are poly-
Focus lens, photoelectric sensor and photoelectric detective circuit, which is characterized in that the sample cell is sheath flow pool, the sheath flow pool packet
Include for by prepare liquid capillary and on the outside of the capillary for the sheath stream pipeline by sheath fluid, the prepare liquid
It is located at the focal point of condenser lens, table of the scattering light condenser lens in entering light side with the flow chamber that sheath fluid flows into together in the same direction
Face is equipped with the light trapping for blocking direct rays.
Further, it is equipped with the standard in reflected light parallel projection to condenser lens between the light source and condenser lens
Straight mirror.
The beneficial effects of the utility model are：
1, sheath flow pool makes the particle in liquid keep individually passing through as far as possible during by sheath flow pool, greatly increases
The accuracy of test result is added；
2, light source is incident in the form of directional light in condenser lens by the setting of collimating mirror as possible, and photelectric receiver is made to connect
The signal received is more accurate.
Description of the drawings
Fig. 1 is liquid particles counting and detecting device structural schematic diagram
Fig. 2 is sheath flow pool structural schematic diagram
Wherein, 1- optical fiber lasers, 2- collimating mirrors, 3- condenser lenses, 4- sheath flow pools, 5- light trappings, 6- scatter light and focus
Lens, 7- photoelectric sensors, 8- sheath stream pipelines, 9- capillaries, 10- flow chambers.
Specific implementation mode
1-2 and specific embodiment are described in further detail the utility model below in conjunction with the accompanying drawings.
Liquid particles counting and detecting device as shown in Figs. 1-2 includes the optical fiber laser 1 being sequentially placed, collimating mirror 2, gathers
Focus lens 3, sheath flow pool 4, scattering light condenser lens 6, photoelectric sensor 7 and the Photoelectric Detection electricity being connected with photoelectric sensor 7
Road, scattering light condenser lens 6 are equipped with the light trapping 5 for blocking direct line on the surface of entering light side.
The present apparatus using laser as lighting source, laser by after collimating mirror 2 in the form of direct light by most of light
Line projects in condenser lens 3, irradiating sample pond after line focus lens 3 focus, and sample cell uses sheath Flow Technique, and focus, which is located at, to be waited for
The flow chamber 10 that liquid and sheath fluid flow through jointly is surveyed, sample cell makes testing liquid be sprayed from capillary 9, and sheath fluid is out of sheath circulation road 8
It is flowed out in the same direction with prepare liquid, and the two, there are current difference, prepare liquid flows through flow chamber 10 together with sheath fluid, and surrounding is enclosed by sheath fluid
Around the particle stream that the particle in guarantee liquid is individually arranged in intermediate formation generates scattering now when in laser irradiation to particle
As in laser direct projection direction, setting light trapping 5 blocks direct light, and using near forward scattering light-receiving, it is poly- that a scattering light is arranged
Focus lens 6 receive scattering light, and using its bore selective scattering optical range, lens focus scatters light, is received and is dissipated by photoelectric converter 7
Light is penetrated, electric signal is converted optical signals into, which, by software processing, is carried out grain count after processing.
The present apparatus is controlled by size, sheath fluid and the prepare liquid in hole at control capillary outlet flowing indoor relative velocity
Prepare liquid processed is flowing indoor width of flow path, to ensure liquid in 3 focus of condenser lens in a manner of individually arranging as far as possible
Flow through, avoid multiple particles side by side by or the phenomenon that block mutually, and by collimating mirror 2 as possible by the light at light source
It projects on condenser lens 3, influence of the light intensity for test is reduced, to increase the accuracy of integrated testability result.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvement can also be made, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (2)
1. a kind of liquid particles counting and detecting device, including the light source, condenser lens, sample cell, the scattering light that are sequentially placed focus
Lens, photoelectric sensor and photoelectric detective circuit, which is characterized in that the sample cell is sheath flow pool, and the sheath flow pool includes
For by prepare liquid capillary and on the outside of the capillary for the sheath stream pipeline by sheath fluid, the prepare liquid and sheath
The flow chamber that liquid flows into together in the same direction is located at the focal point of condenser lens, and the scattering light condenser lens is set on the surface of entering light side
It is useful for blocking the light trapping of direct rays.
2. liquid particles counting and detecting device according to claim 1, which is characterized in that the light source and condenser lens it
Between be equipped with the collimating mirror in reflected light parallel projection to condenser lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244826.6U CN207798628U (en) | 2018-02-11 | 2018-02-11 | A kind of liquid particles counting and detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244826.6U CN207798628U (en) | 2018-02-11 | 2018-02-11 | A kind of liquid particles counting and detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798628U true CN207798628U (en) | 2018-08-31 |
Family
ID=63276034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820244826.6U Expired - Fee Related CN207798628U (en) | 2018-02-11 | 2018-02-11 | A kind of liquid particles counting and detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693413A (en) * | 2020-04-23 | 2020-09-22 | 杭州兴浩晖生物科技有限公司 | Variable grating micro-signal separation device and manufacturing method thereof |
| CN114636684A (en) * | 2022-05-20 | 2022-06-17 | 深圳市帝迈生物技术有限公司 | Flow-type fluorescence analysis apparatus |
-
2018
- 2018-02-11 CN CN201820244826.6U patent/CN207798628U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693413A (en) * | 2020-04-23 | 2020-09-22 | 杭州兴浩晖生物科技有限公司 | Variable grating micro-signal separation device and manufacturing method thereof |
| CN114636684A (en) * | 2022-05-20 | 2022-06-17 | 深圳市帝迈生物技术有限公司 | Flow-type fluorescence analysis apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2006108798A (en) | OPTICAL FLOW METER FOR MEASURING GAS AND LIQUID FLOW IN PIPELINES | |
| CN107478557B (en) | Detection device of dust concentration detector | |
| US7355706B2 (en) | Particle detection system implemented with an immersed optical system | |
| US7911591B2 (en) | Optical transit time velocimeter | |
| US7528951B2 (en) | Optical design of a measurement system having multiple sensor or multiple light source paths | |
| CN104089855A (en) | Method and device for measuring particles by polarized light scattering | |
| US20160146732A1 (en) | Particle Detector And Method For Detecting Particles | |
| US7538874B2 (en) | Measurement of light from a predefined scatter angle from particulate matter in a media | |
| CN105571834A (en) | Measuring device of quantum efficiency of CCD device | |
| US7525655B2 (en) | Optical design of a particulate measurement system | |
| KR20180000015A (en) | High accuracy real-time particle counter | |
| CN207798628U (en) | A kind of liquid particles counting and detecting device | |
| KR20120013297A (en) | Method and system for analysing solid particles in a medium | |
| CN108709847A (en) | A kind of air particles detection method and detection device | |
| CN106018206A (en) | Liquid particle detection device | |
| CN105973769A (en) | Device and method for measurement of size of suspended submicron particulate matter | |
| JPH02212742A (en) | Measuring apparatus for fine particle in liquid | |
| US7495763B2 (en) | Dual function measurement system | |
| JP2002277348A (en) | Transmissivity measuring method and device | |
| CN102331394B (en) | Photoelectric sensor of high flow airborne particle counter | |
| WO2021097910A1 (en) | Detection device and method for tiny particles in liquid | |
| US7505132B2 (en) | Self calibrating measurement system | |
| CN205449796U (en) | Dust sensor | |
| CN108226015A (en) | A kind of new liquid grain count method and system | |
| CN207096045U (en) | A kind of band makes the laser dust apparatus for measuring concentration of device for mark by oneself |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20190211 |