CN207923661U - Liquid particle detector - Google Patents
Liquid particle detector Download PDFInfo
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- CN207923661U CN207923661U CN201721786876.9U CN201721786876U CN207923661U CN 207923661 U CN207923661 U CN 207923661U CN 201721786876 U CN201721786876 U CN 201721786876U CN 207923661 U CN207923661 U CN 207923661U
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- liquid
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- laser light
- shell
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Abstract
The utility model discloses a liquid particle detector, which comprises a shell, a peristaltic pump, a laser light source and a photoelectric receiver are arranged in the shell, the laser light source and the photoelectric receiver are arranged oppositely, a sample detection cavity for liquid to be detected to pass is arranged between the laser light source and the photoelectric receiver, the flow direction of fluid in the sample detection cavity is vertical to parallel light rays emitted by the laser light source, one end of the sample detection cavity is provided with a liquid inlet, and the other end of the sample detection cavity is provided with a liquid outlet; the laser light source and the photoelectric receiver are respectively connected with a controller through a laser driving circuit and a signal processing circuit, and the controller is connected with the peristaltic pump which is used for conveying liquid to be detected into the sample detection cavity through a peristaltic pump driving circuit. The utility model discloses can realize accurately detecting out bubble quantity in the liquid.
Description
Technical field
The utility model is related to liquid particles detector technical fields, and in particular to a kind of liquid particles detector.
Background technology
The pollutant of hydraulic oil mainly has solid particulate matter, empty gas and water and chemical substance etc., wherein solid grain contamination
That maximum pollutant is endangered in machinery hydraulic system, it be Hydraulic Elements abrasion, clamping stagnation and failure the main reason for.According to related
Data shows that 70% or more hydraulic system fault is caused by oil contamination.It was verified that being examined using oil/liquid particle pollution
Survey technology and effective pollution control measures can significantly improve Weapon Hydraulic System working life and reliability.
Particulate matter in on_line detection method detection hydraulic oil is largely used to contain in foreign countries' aviation at present, hydraulic system of ship
Amount, on_line detection method are always the research direction of hydraulic oil particle detection.Light blockage method is as a kind of common online hydraulic oil
Particle detections method has many advantages, such as that untouchable, measuring speed is fast and accuracy is high.
Photoresist method measures the particle in suspension, is invented by Carve.L.D early in 1958, the development through decades is still
For the method for amounts of particles and size distribution in detection liquid of people's attention.The method is also known as light extinction method or photoetching method.
Current most of online detection instruments, it is complicated, it can not achieve portable use.
Utility model content
The purpose of this utility model is to be directed to technological deficiency existing in the prior art, and provide a kind of liquid particles detection
Instrument.
Technical solution is used by realize the purpose of this utility model：
A kind of liquid particles detector, including shell connect device in the shell equipped with peristaltic pump, laser light source and photoelectricity
Device is received, the laser light source and photelectric receiver are oppositely arranged, are useful between the laser light source and photelectric receiver to be checked
Survey liquid by sample detection chamber, the parallel rays that the flow direction of the sample detection cavity fluid is sent out with laser light source mutually hangs down
Directly, one end of the sample detection chamber is formed with liquid inlet, the other end is formed with liquid outlet；The laser light source and photoelectricity
Receiver is connect by laser drive circuit and signal processing circuit with controller respectively, and the controller is driven by peristaltic pump
Liquid to be detected is sent into the peristaltic pump in the sample detection chamber by dynamic circuit connection.
The controller connects HMI liquid crystal displays by liquid crystal drive interface, and the HMI liquid crystal displays are mounted on the shell
Upper surface side.
The controller connects mini-printer by 485 interfaces, and the HMI liquid crystal displays are mounted on the upper end of the shell
Face side.
The controller connection USB interface and download interface.
The signal processing circuit include the filter circuit set gradually, division circuit, operational amplification circuit, comparator,
Preferred circuit output circuit, comparator connection the digital analog converter ADC, the digital analog converter ADC and ADC mouthfuls of phases of controller
Connection, the output end of the preferred circuit output circuit and the signal receiving end of controller connect, the filter circuit and photoelectricity
The signal output end of receiver connects.
The upper center of the shell forms groove, is equipped with handle in the groove, there is handguard in the downside of the handle
Layer of silica gel.
Dismountable footing is arranged at the bottom of the shell.
The side of the shell is equipped with oil inlet and outlet, and the oil inlet and outlet passes through pipeline and peristaltic pump and liquid discharge respectively
Mouth connection.
The utility model may be implemented accurately to detect amounts of particles in liquid, realize rapidly to the particle in liquid
The detection of quantity.
Description of the drawings
Fig. 1 is the axonometric schematic diagram of liquid particles detector；
Fig. 2 is another angle axonometric schematic diagram of liquid particles detector；
Fig. 3 is the exploded view of liquid particles detector；
The structural schematic diagram for the sample detection chamber that Fig. 4 is；
Fig. 5 is the circuit diagram of liquid particles detector.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
Referring to shown in Fig. 1-5, a kind of liquid particles detector, including shell 100, be equipped in the shell peristaltic pump 119,
Laser light source 120 and photoelectricity connect device and receive device, and the laser light source and photelectric receiver are oppositely arranged, the laser light source and light
Be useful between electric receiver liquid to be detected by sample detection chamber 121, the flow direction of the sample detection cavity fluid with
The parallel rays that laser light source is sent out is perpendicular, and one end of the sample detection chamber is formed with liquid inlet 1210, other end shape
At there is liquid outlet 1211；The laser light source and photelectric receiver pass through laser drive circuit and signal processing circuit respectively
It is connect with controller, the light of laser light source enters from the optical channel 1211 that enters of detection side, and is penetrated from the channel of opposite side 1213
Go out, photovoltage receiver is mounted on the one end in the channel 121 of the opposite side, and the controller is connected by peristaltic pump driving circuit
Meet peristaltic pump liquid to be detected being sent into the sample detection chamber
The controller is mounted in control circuit board 117, and the photoelectricity, which connects device, which receives device, can be mounted on control circuit board 117
On, control circuit board 117 is mounted in circuit board fixed plate 1171.
The laser drive circuit and peristaltic pump driving circuit are respectively used to, when starting test, drive by light source respectively
Dynamic circuit and peristaltic pump driving circuit open laser light source and control peristaltic pump；When starting cleaning function, control peristaltic pump is just
Reversion.
Further, the controller connects HMI liquid crystal displays 112 by liquid crystal drive interface, passes through HMI liquid crystal to realize
Screen realizes that human-computer interaction, the HMI liquid crystal displays are mounted on the upper surface side of the shell.The liquid crystal drive interface is established
It is contacted between HMI liquid crystal displays and controller, by serial ports transmission data, realizes the control to equipment, such as start test, check number
According to functions such as, USB storages, data-printings.
Further, the controller connects mini-printer 111 by 485 interfaces, and testing result is printed.
Mini-printer is contacted by 485 buses and controller foundation, and controller controls printer and prints detection data, the HMI liquid
Crystalline substance screen is mounted on the upper surface side of the shell.
Further include having isolated power supply module, be mounted in the control circuit board 117, power supply 24V and can fill
The battery module 116 of electricity is electrically connected, and the battery module 116 carries electric shield 1161, and isolated power supply module is according to each module need
It wants voltage different, voltage is down to 12V, 5V, 3.3V, used for other electricity consumption modules of device, such as give laser light source, control respectively
Device processed, HMI liquid crystal displays.
Wherein, the upper center of the shell forms groove 113, is equipped with handle 110 in the groove, under the handle
There is handguard layer of silica gel 1101 in side.
Wherein, dismountable footing 115 is arranged at the bottom of the shell.
Wherein, the side of the shell is equipped with oil inlet and outlet 114, and the oil inlet and outlet passes through pipeline and peristaltic pump respectively
And liquid outlet connection.
Further, the controller connection USB interface and download interface, download interface are that program uses when downloading,
At the same time as common serial ports and peripheral communication.USB interface is realized acquired data storage to USB flash disk, RAM card, SD card.It is described
Controller connects FLASH memory, for being stored in the related data of system, such as demarcates granule number.
Further, the signal processing circuit can be include that the filter circuit, division circuit, operation set gradually is put
Big circuit, comparator, preferred circuit output circuit, comparator connection the digital analog converter ADC, the digital analog converter ADC
It is connected for ADC mouthfuls with controller, the output end of the preferred circuit output circuit and the signal receiving end of controller connect, described
The signal output end of filter circuit and photelectric receiver connects.
Wherein, the optical signal that photoelectric sensor acquisition testing area is transmitted removes interference signal by filter circuit, then,
Signal intensity is set to be converted into relative value by division circuit, the signal difference no longer caused by the difference of light source, later, signal warp
Operational amplification circuit is crossed, signal is amplified into suitable multiple, the analog voltage with being obtained by digital analog converter ADC inputs respectively
Comparator (8 tunnel) is compared, and 8 road comparison results are finally inputted normal voltage output circuit, obtain corresponding digital signal
Value recently enters controller processing.
When utility model works, tested liquid stream flows through the sample detection chamber of photoelectric sensor under peristaltic pump driving,
The parallel rays that the vertical direction of liquid stream has laser to send out passes through, and the light that left side laser light source is sent out is through sample detection chamber, in sample
There is photelectric receiver on the right of product test chamber, generate the photosignal of certain value, there are one the particles that projected area is A to pass through sample
When test chamber, laser beam blocks, photelectric receiver just will produce a pulse, the height of pulse and the projected area of bubble at
Direct ratio.Pass through the granule number of data processing section recording impulse number, that is, fluid to be measured, impulse amplitude size E0And particle
Particle size d can be described with following formula：
In formula, E represents the DC voltage of photelectric receiver output.
The above particle detection technique is the content in relation to particle detections in the prior art.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (8)
1. a kind of liquid particles detector, which is characterized in that including shell, in the shell be equipped with peristaltic pump, laser light source with
And photoelectricity connects device and receives device, the laser light source and photelectric receiver are oppositely arranged, between the laser light source and photelectric receiver
Be useful for liquid to be detected by sample detection chamber, the flow direction of the sample detection cavity fluid sends out flat with laser light source
Row light is perpendicular, and one end of the sample detection chamber is formed with liquid inlet, the other end is formed with liquid outlet；The laser
Light source and photelectric receiver are connect by laser drive circuit and signal processing circuit with controller respectively, and the controller is logical
Cross the peristaltic pump that liquid to be detected is sent into the sample detection chamber by the connection of peristaltic pump driving circuit.
2. liquid particles detector as described in claim 1, which is characterized in that the controller is connected by liquid crystal drive interface
HMI liquid crystal displays, the HMI liquid crystal displays are mounted on the upper surface side of the shell.
3. liquid particles detector as claimed in claim 2, which is characterized in that the controller is connected miniature by 485 interfaces
Printer, the HMI liquid crystal displays are mounted on the upper surface side of the shell.
4. liquid particles detector as described in claim 1, which is characterized in that the controller connection USB interface and download
Interface.
5. liquid particles detector as described in claim 1, which is characterized in that the signal processing circuit includes setting gradually
Filter circuit, division circuit, operational amplification circuit, comparator, preferred circuit output circuit, the comparator connect digital-to-analogue conversion
Device ADC, the digital analog converter ADC are connected for ADC mouthfuls with controller, the output end of the preferred circuit output circuit and control
The signal receiving end of device connects, and the signal output end of the filter circuit and photelectric receiver connects.
6. liquid particles detector as described in claim 1, which is characterized in that the upper center of the shell forms groove, institute
It states and is equipped with handle in groove, there is handguard layer of silica gel in the downside of the handle.
7. liquid particles detector as described in claim 1, which is characterized in that dismountable footing is arranged at the bottom of the shell.
8. liquid particles detector as described in claim 1, which is characterized in that the side of the shell is equipped with oil inlet and outlet,
The oil inlet and outlet is connect by pipeline with peristaltic pump and liquid outlet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786876.9U CN207923661U (en) | 2017-12-20 | 2017-12-20 | Liquid particle detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786876.9U CN207923661U (en) | 2017-12-20 | 2017-12-20 | Liquid particle detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207923661U true CN207923661U (en) | 2018-09-28 |
Family
ID=63607160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721786876.9U Active CN207923661U (en) | 2017-12-20 | 2017-12-20 | Liquid particle detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207923661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941664A (en) * | 2017-12-20 | 2018-04-20 | 天津博宜特科技有限公司 | Liquid particle detector |
| CN109959586A (en) * | 2019-04-09 | 2019-07-02 | 山东航天电子技术研究所 | The granule detecting method and system of suspended particulate in a kind of oil liquid |
-
2017
- 2017-12-20 CN CN201721786876.9U patent/CN207923661U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941664A (en) * | 2017-12-20 | 2018-04-20 | 天津博宜特科技有限公司 | Liquid particle detector |
| CN109959586A (en) * | 2019-04-09 | 2019-07-02 | 山东航天电子技术研究所 | The granule detecting method and system of suspended particulate in a kind of oil liquid |
| CN109959586B (en) * | 2019-04-09 | 2021-09-10 | 山东航天电子技术研究所 | Method and system for detecting granularity of suspended particles in oil |
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