CN109564158A - Concentration of oil measuring device and concentration of oil measurement method - Google Patents
Concentration of oil measuring device and concentration of oil measurement method Download PDFInfo
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- CN109564158A CN109564158A CN201780048765.4A CN201780048765A CN109564158A CN 109564158 A CN109564158 A CN 109564158A CN 201780048765 A CN201780048765 A CN 201780048765A CN 109564158 A CN109564158 A CN 109564158A
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- 238000000691 measurement method Methods 0.000 title claims description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 155
- 238000005259 measurement Methods 0.000 claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000002835 absorbance Methods 0.000 claims abstract description 46
- 238000011088 calibration curve Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 238000005286 illumination Methods 0.000 claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 12
- 229930195733 hydrocarbon Natural products 0.000 abstract description 12
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 12
- 230000008033 biological extinction Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 141
- 230000008929 regeneration Effects 0.000 description 22
- 238000011069 regeneration method Methods 0.000 description 22
- 238000004821 distillation Methods 0.000 description 19
- 238000012545 processing Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 8
- 238000009835 boiling Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000006210 lotion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
A kind of concentration of oil measuring device in the cleaning solution not needed using expensive beam splitter, detecting element etc. is provided.Concentration of oil measuring device (10) has: illumination part (104), to there is the irradiation light of measurement wavelength to be irradiated to measurement object liquid (cleaning solution) for it, which is the defined wavelength between 280nm~300nm；It transmits optical detection part (105), measures the irradiation light through the intensity of transmitted light obtained from the measurement object liquid；And concentration of oil determination section (1061), absorbance under its described measurement wavelength for calculating the measurement object liquid according to the intensity of the transmitted light determined by transmission optical detection part (105) finds out the concentration of the oil in the measurement object liquid according to the calibration curve of the value of the absorbance and the relationship for indicating the concentration for measuring the oil under wavelength and absorbance.Not need expensive beam splitter, detecting element etc. by using a wavelength between 280nm~300nm, the oil for the low concentration which is nearly free from the extinction for not having the molecule of multiple bond of carbon atom possessed by the hydrocarbon cleaning liquid as the mainstream of industrial cleaning solution and is able to detect 50ppm or so.
Description
Technical field
The present invention relates to a kind of device and method for measuring the concentration of the oil in cleaning solution.Concentration of oil measurement
Device and concentration of oil measurement method are preferred for measuring the oil contained by cleaning solution in use etc. in industrial cleaning machine
The concentration divided, the industrial cleaning machine is for removing the cutting oil being attached on workpiece, pressurization/punching oil, machine oil, grease, weldering
The oils such as agent.
Background technique
The cleaning solution used in industrial cleaning machine is using hydrocarbon cleaning liquid as mainstream.Hydrocarbon cleaning liquid does not contain ozone layer
Substance or chlorine are destroyed, therefore there is the advantage that influence for bringing environment or human body is few.In addition, the low boiling point by utilizing hydrocarbon
In this point of the boiling point of ingredient of above-mentioned oil, hydrocarbon cleaning liquid has the further advantage that can be by after will be containing use
The hydrocarbon cleaning liquid of oil is heated to above the boiling point of hydrocarbon and is lower than the temperature of the boiling point of oil to steam after being accumulated in distillation tank
Evaporate regeneration.Hydrocarbon cleaning liquid has the further advantage that the clean steam generated when can be by the distillation regeneration treatment is used for work
The cleaning and drying (being set as " steam clean/drying " below) of part.In steam clean/drying, it is clear that workpiece is contained in steam
Wash/dry rinse bath in, with the surface of the steam clean workpiece, the slot is then made to have to go to the toilet by importing the steam to the slot
It depressurizes to drastically decline the boiling point of cleaning agent fastly, bumping/vaporization occurs for the cleaning agent for thereby adhering to workpiece surface
To keep the workpiece dry.In actual industrial cleaning machine, workpiece is contained in the liquid rinse for stockpiling hydrocarbon cleaning liquid
After carrying out liquid rinse in slot, steam clean/drying is subtly carried out.
When operating industrial cleaning machine continuously, gradually it is accumulated in distillation tank by the oil of distillation removal,
Oil is mixed into the steam of hydrocarbon cleaning liquid (cleaning solution after regeneration) obtained from causing distillation to regenerate.If so, causing
Oil when steam clean/drying in steam is attached to the surface of workpiece, leads to the ability decline of cleaning.It is this clear in order to prevent
The decline for washing ability needs the concentration of oil by cleaning solution after regeneration to be suppressed to normal concentration or less.The normal concentration is according to oil
Point ingredient and it is different, but in order to all prevent the decline of cleaning ability regardless of ingredient, it is desirable to be set as 50ppm~100ppm
Below.It was to remove the distillation tank containing oil when the wash number of workpiece reaches the stated number that rule of thumb formula determines in the past
Interior raffinate, but if the concentration of the oil after measurement regeneration in cleaning solution, expectation can be carried out with more appropriate timing
The removal of the raffinate.
In order to measure the concentration of oil of cleaning solution, use example method as described in Patent Document 1 is considered.Patent document 1
Describe following technology: one measures wavelength as defined in determined by the ingredient using every kind of oil as contained by cleaning solution
Ultraviolet light measures absorbance, to find out molten according to the calibration curve of the concentration of oil of every kind of pre-production oil and absorbance
The concentration of oil in the Xie Yu cleaning solution.259nm, city are set as about the measurement wavelength of every kind of oil, such as commercially available pressurization oil
It sells cutting oil and is set as 234nm, commercially available solder flux is set as 250nm.
Patent document 1: Japanese Unexamined Patent Publication 09-061349 bulletin
Summary of the invention
Problems to be solved by the invention
In concentration of oil measuring device and method documented by patent document 1, due to every kind of oil measurement wavelength not
Together, it is therefore necessary to the light of multiple wavelength is accordingly detected with these measurement wavelength.Thus, for example using that will include these multiple waves
Long illumination is mapped to the light source of sample (hydrocarbon cleaning liquid), the light splitting member for being divided the light for having passed through sample by each wavelength
Part and the detector for detecting the light obtained from element light splitting that is split by each wavelength.In this configuration, it needs
Used as the beam splitter of expensive optical element, in addition detector is also required to be arranged by each wavelength using having
The expensive detector of multiple detecting elements.In addition, obtaining data at substantially the same time by each wavelength, it is therefore desirable to for short
The expensive control equipment of mass data is handled and saved in time.
The problem to be solved by the present invention is to provide it is a kind of do not need using expensive beam splitter, detecting element and
Control the concentration of oil measuring device and method in the cleaning solution of equipment.
The solution to the problem
Concentration of oil measuring device in cleaning solution according to the present invention completed to solve the above problems has:
A) will there is illumination part the irradiation light of measurement wavelength to be irradiated to measurement object liquid, which is 280nm
A defined wavelength between~300nm；
B) optical detection part is transmitted, measures the irradiation light through the strong of transmitted light obtained from the measurement object liquid
Degree；And
C) concentration of oil determination section, according to the intensity of the transmitted light determined by the transmission optical detection part to calculate
The absorbance under the measurement wavelength of measurement object liquid is stated, according to the value of the absorbance and is indicated under the measurement wavelength
The calibration curve of relationship between the concentration and absorbance of oil finds out the concentration of the oil in the measurement object liquid.
As mentioned earlier, as the cleaning solution of industrial cleaning machine and become current main-stream hydrocarbon cleaning liquid and remove this with
Many cleaning solutions such as outer glycol ether system cleaning solution are not by having the molecular composition of multiple (the 2 weights, 3 weights) key of carbon atom.This
The molecule of multiple bond of the kind without carbon atom generates extinction under the wavelength less than 280nm, on the other hand 280nm's or more
Extinction is nearly free under wavelength.In contrast, it is attached to the workpiece as cleaning object, cutting for cleaning solution is mixed by cleaning
Cut the molecule that the oils such as oil, pressurization/punching oil, machine oil, grease, solder flux largely contain the multiple bond with carbon atom.It is this
The molecule of multiple bond with carbon atom makes the Wavelength distribution of absorbance peak value in wide range, still according to its type
Regardless of the type of oil, it will not be 0 in the wave-length coverage internal absorbance of 280nm~300nm, there is fixed value.Also, work as
When wavelength is more than 300nm, it is difficult to detect the oil of the low concentration of 50ppm or so.
Therefore in the present invention, measured using the measurement wavelength as a wavelength as defined between 280nm~300nm
The intensity for penetrating light calculates the absorbance under the measurement wavelength according to the intensity, and thus, it is possible to inhibit (the cleaning of measurement object liquid
Liquid, measurement object cleaning solution) influence to extinction, and according to the oil and extinction for indicating the measurement object under the measurement wavelength
The calibration curve of relationship between degree finds out the concentration of the oil.
Related concentration of oil measuring device according to the present invention only uses a defined wavelength and is used as measurement wavelength,
Therefore the detecting element using beam splitter and each wavelength is not needed.In addition, should be same compared with the case where using multiple wavelength
When the data volume that handles it is few, therefore do not need using expensive control equipment.For example, it is dense to be not provided with oil according to the present invention
The dedicated control equipment of measuring device is spent, and is able to use control equipment (programmable logic possessed by industrial cleaning machine
Controller) carry out the control of the concentration of oil measuring device.Based on these reasons, concentration of oil measurement dress according to the present invention
It sets and is able to suppress cost.
Concentration of oil measuring device according to the present invention can be preferred for low concentration as 50ppm~2000ppm
Oil measurement.In addition, concentration of oil according to the present invention is surveyed due to the measurement for the oil for being suitble to this low concentration
Amount device can be preferred for needing to detect in the steam clean/drying of the ability of the oil of low concentration as 50ppm
The measurement of concentration of oil after the regeneration used in cleaning solution.In addition, concentration of oil measuring device according to the present invention institute into
The object of the measurement of capable oil is not limited to cleaning solution after the regeneration, such as also can be used in by the cleaning of workpiece
The variation of concentration of oil is measured in rinse bath (time change of concentration of oil is become into specified value to find out the timing of cleaning end
The timing terminated is set as when following).
Concentration of oil measuring device according to the present invention can also be also equipped with:
The second irradiation light with the second measurement wavelength is irradiated to the measurement object liquid by the second illumination part, should
Second measurement wavelength is the defined wavelength between 320nm~340nm；
Second transmission optical detection part, it is saturating through obtained from the measurement object liquid second to measure second irradiation light
Penetrate the intensity of light；And
Second concentration of oil determination section, according to the strong of the second transmitted light determined by the second transmission optical detection part
It spends to calculate the absorbance under the second measurement wavelength of the measurement object liquid, according to the value of the absorbance and indicates institute
The calibration curve of the relationship between the concentration and absorbance of the oil under the second measurement wavelength is stated to find out the measurement object liquid
In oil concentration.
In this way, in addition to using the irradiation light for measuring wavelength having as a wavelength as defined between 280nm~300nm
Other than measuring, second with the second measurement wavelength as the defined wavelength between 320nm~340nm is also used
Irradiation light finds out the concentration of the oil in measurement object liquid (cleaning solution, measurement object cleaning solution), and thus, it is possible to improve to make to inhale
Luminosity is the measurement accuracy of the absorbance of the biggish oil of wavelength of peak value.In this case, it does not need by the every of oil yet
A type uses the light of different wave length, only uses the measurement wavelength and described second and measures the light of both wavelength of wavelength i.e.
It can.In addition, it is not necessary that using beam splitter, detecting element (transmission optical detection part and the of multiple transmitted lights are not needed to be arranged yet
Two transmission optical detection parts).Also, if the irradiation light and second irradiation light are irradiated to survey in the mutually different time
Object liquid is measured, then the detector for detecting transmitted light does not need identification wavelength, therefore a detector general using two wavelength
?.It, can it is preferable to use photodiodes for this detector.
In the concentration of oil measurement method in cleaning solution according to the present invention,
To there is the irradiation light of measurement wavelength to be irradiated to measurement object liquid, which is the rule between 280nm~300nm
A fixed wavelength,
The intensity that the irradiation light penetrates transmitted light obtained from the measurement object liquid is measured,
The absorbance under the measurement wavelength of the measurement object liquid is calculated according to the intensity of the transmitted light, according to
The value of the absorbance and the oil under the expression measurement wavelength and the calibration curve of the relationship between absorbance are to find out
State the concentration of the oil in measurement object liquid.
The effect of invention
In accordance with the invention it is possible to obtain a kind of do not need using expensive beam splitter, detecting element and control equipment
, concentration of oil measuring device and method in cheap cleaning solution.
Detailed description of the invention
Fig. 1 is to indicate to have an embodiment of concentration of oil measuring device according to the present invention as structural element
Industrial cleaning machine sketch structure figure.
Fig. 2 is the spectrum of the transmission light quantity in four kinds of cleaning solutions of the molecular composition for indicating the multiple bond by not having carbon atom
Measured value figure.
Fig. 3 is the functional block diagram of the function of the control unit in the concentration of oil measuring device for indicate present embodiment.
Fig. 4 is indicated obtained by transmission light quantity of the measurement respectively containing one of four kinds of different oils cleaning solution of oil
The chart of the result arrived.
Fig. 5 is the chart for indicating to find out the obtained result of absorbance from transmission light quantity shown in Fig. 4.
Fig. 6 is the chart of the calibration curve for every kind of oil for indicating that absorbance is produced according to figure 5.
Fig. 7 is the dense of the oil in concentration of oil measuring device and method the measurement cleaning solution indicated through present embodiment
Spend the chart of obtained result.
Specific embodiment
Illustrate the embodiment of concentration of oil measuring device and method according to the present invention using FIG. 1 to FIG. 7.
Fig. 1 shows industrial cleaning machine 1 of the concentration of oil measuring device 10 with present embodiment as structural element
Sketch.Industrial cleaning machine 1 is the device for removing the oil being attached on workpiece, is filled in addition to concentration of oil measures
Setting other than 10 also has the first rinse bath 11, the second rinse bath 12, steam clean/dry slot 13, temporarily stockpiles slot 14, distillation tank
15, cleaning solution stockpiles slot 18 and sample cell cleaning liquid bath 19 after heat exchanger 16, displacer 17, regeneration.It is thick shown in Fig. 1
Solid line indicate that the flow path of liquid, thick dotted line indicate that the flow path of gas, thin straight dotted line indicate the path of electric signal.
(1) overall structure and movement of industrial cleaning machine 1
Before illustrating the concentration of oil measuring device 10 of present embodiment, illustrate the entirety of industrial cleaning machine 1 first
The movement of the cleaning of structure and workpiece.It is provided in the first rinse bath 11 and the second rinse bath 12 to the cleaning being accumulated in slot
The ultrasonic oscillator of liquid application ultrasonic activation.In addition, being made to be easy to produce the cavitation using ultrasonic wave by vacuum pump
Decompression in first rinse bath 11 and the second rinse bath 12, carries out the degassing of cleaning solution.It is clear in these first rinse baths 11 and second
After stockpiling cleaning solution in washing trough 12, workpiece is impregnated in cleaning solution and applies ultrasonic activation, thus workpiece is cleaned.?
This, is based on aftermentioned reason, the oil of the cleaning solution compared with the cleaning solution in the first rinse bath 11 in second rinse bath 12
Amount is less, therefore the cleaning workpiece first in the first rinse bath 11, then carries out the workpiece in the second rinse bath 12
Cleaning, thus, it is possible to the oil in cleaning solution is again attached to the situation on workpiece to be suppressed to minimum limit.
Steam clean/dry slot 13 be for in the second rinse bath 12 be cleaned after workpiece carry out steam clean and
Dry slot.Steam used in steam clean/drying is to provide as described later from distillation tank 15.Steam clean/drying
The cleaning solution that steam in slot 13 and being removed remains on the substance on surface of workpiece is sent back to the second rinse bath 12.Separately
Outside, it is recycled to temporarily by gas caused by the decompression of the first rinse bath 11 and the second rinse bath 12, the evaporation of cleaning solution
Stockpile slot 14.
Float valve 151 is provided in distillation tank 15, when the liquid in distillation tank 15 becomes specified amount or less by distillation, clearly
Washing lotion stockpiles slot 14 and imported into distillation tank 15 from temporarily.In distillation tank 15, by heater heating (not shown), and pass through
Displacer 17 depressurizes.As a result, about cleaning solution, oil is remained in fluid form to be evaporated.The one of the steam of generation
Part is fed into steam clean/dry slot 13 as previously described, and remainder stockpiles after being condensed by heat exchanger 16 to again
Cleaning solution stockpiles slot 18 after life.
Cleaning solution stockpiles slot 18 and flows into the regeneration for eliminating oil by distillation tank 15 to the second rinse bath 12 after regeneration
Cleaning solution afterwards.First rinse bath 11 and the second rinse bath 12 are connected by the second overflow pipe 122.About the second overflow pipe 122, phase
It is higher with the link position of the second rinse bath 12 than in the link position with the first rinse bath 11, it is clear after by flowing into regeneration
Washing lotion is come the cleaning when liquid level of the cleaning solution in the second rinse bath 12 being made to be higher than the link position of the latter, in the second rinse bath 12
A part of liquid is moved to the first rinse bath 11 naturally.Thus, compared with the cleaning solution in the first rinse bath 11, the second cleaning
The amount of the oil of cleaning solution in slot 12 is few.In addition, the first rinse bath 11 and the interim slot 14 that stockpiles pass through the first overflow pipe
112 connections, when making the liquid level of the cleaning solution in the first rinse bath 11 be higher than the by flowing into cleaning solution from the second rinse bath 12
When the link position of one overflow pipe 112, a part of the cleaning solution in the first rinse bath 11 travels naturally through the first overflow pipe 112
It is moved to and temporarily stockpiles slot 14.
First rinse bath 11 has first circulation filtration system 111, which takes out clearly out of slot
Washing lotion returns to the cleaning solution in slot by filter.Identical second circulation filtering system is also equipped in second rinse bath 12
System 121.These circulated filter systems remove 10 μm of partial size or so or more of particle, not can be removed oil.
(2) structure of the concentration of oil measuring device 10 of present embodiment
Then, the structure of the concentration of oil measuring device 10 in industrial cleaning machine 1 is explained in detail.As described later, oily
Divide apparatus for measuring concentration 10 to have and stockpiles what slot 18 was connect with cleaning solution after the first rinse bath 11, the second rinse bath 12 and regeneration
Flow path 101, the liquid feeding pump 102 being set in flow path 101 are set to the sample than 102 downstream of liquid feeding pump in flow path 101
Pond 103, the reference cell 1031 with reference to measurement, illumination part 104, transmission optical detection part 105 and the control for carrying out device entirety
System and the control unit 106 of aftermentioned data processing.
The inflow part 1011 of flow path 101 is connect via the first relay pipe 113 with the first rinse bath 11, via the second relay pipe
123 connect with the second rinse bath 12, stockpile slot 18 with cleaning solution after regeneration via third relay pipe 183 and connect.In addition, first
Relay pipe 113 is provided with the first relaying open and close valve 11V, and the second relay pipe 123 is provided with the second relaying open and close valve 12V,
Three relay pipes 183 are provided with third relaying open and close valve 18V.
The outflow portion of flow path 101 with temporarily stockpile slot 14 and connect.Thus, for measuring in concentration of oil measuring device 10
Cleaning solution via temporarily stockpile slot 14 be distilled slot 15 distill, be finally sent back to the second cleaning to eliminate the state of oil
Slot 12.In addition it is also possible to which the cleaning solution for being used to measure directly is transmitted back in the slot for containing the cleaning solution from outflow portion.
Sample cell 103 and reference cell 1031 are all the ponds of the few quartz system of the absorption of ultraviolet light.It is flowed in common measurement
Road 101 connects sample cell 103, and when measuring reference data, flow path 101 connects reference cell 1031.It encloses and is free of in reference cell 1031
The cleaning solution of oil measures after the measurement for interrupting concentration of oil with predetermined time interval according to the control of control unit 106
Reference data.
In the present embodiment, illumination part 104 is by the measurement as a wavelength as defined between 280nm~300nm
Wavelength illumination is constituted to the cleaning solution (measurement object liquid) in sample cell 103 by issuing the LED of light of the measurement wavelength.At this
In embodiment, measurement wavelength is set as 290nm.
Here, illustrating the reasons why measurement wavelength is set as a wavelength between 280nm~300nm using Fig. 2.Fig. 2 shows
Out by not having the measured value of the spectrum of the transmission light quantity of four kinds of cleaning solutions 1~4 of the molecular composition of the multiple bond of carbon atom.Four kinds
In cleaning solution 1~3 be all saturation type aliphatic hydrocarbon system cleaning solution, cleaning solution 4 is the cleaning solution of glycol ether system.In Fig. 2
The spectrum of incident light is shown together.Four kinds of cleaning solutions all be less than wavelength 280nm when transmission light quantity than incident light light quantity substantially
Become smaller, it can be seen that absorption of the cleaning solution to ultraviolet light.In contrast, when wavelength 280nm or more, the difference of transmission light quantity and incident light
Become smaller, there's almost no absorption of the cleaning solution to ultraviolet light.Thus, it, can if the measurement wavelength with 280nm is measured
Inhibit the influence of the extinction of cleaning solution and carries out the measurement of the concentration of oil.On the other hand, when measurement wavelength is more than 300nm,
Shown in Fig. 5 as be described hereinafter, low concentration (is in the example as shown in fig. 5 100ppm.It is further 50ppm.) oil extinction
The value of degree becomes too small, therefore can not find out.Thus, by the way that a wavelength between 280nm~300nm is set as measurement wavelength,
Be able to suppress the influence of the extinction of cleaning solution, even and 50ppm or so low concentration, be also able to carry out the concentration of oil
Measurement.
Transmission optical detection part 105 is used to have said determination wave obtained from detecting the cleaning solution penetrated in sample cell 103
The intensity of long transmitted light, is made of photodiode and signal conversion part.The light of photodiode detection said determination wavelength
And its intensity is exported as analog signal.The analog signal that photodiode exports is converted to digital letter by signal conversion part
Number.
Control unit 106 has the function of shown in the functional block diagram with Fig. 3.About control unit 106, it is able to use programmable patrol
Volume controller or personal computer, both can direct control device possessed by applicable industry cleaning machine, can also have oil
Divide the control device of apparatus for measuring concentration 10.Control unit 106 has concentration of oil determination section 1061, reference data record portion
1062, calibration curve record portion 1063, condition entry portion 1064 and measurement control unit 1065.Concentration of oil determination section 1061 by
Absorbance calculation part 1061A, calibration curve selector 1061B and calibration curve application section 1061C are constituted.Concentration of oil determines
The details in portion 1061 describe hereinafter together with the movement of the concentration of oil measuring device 10 of present embodiment.Reference data record portion
Record has the data of transmission light quantity go out for the cleaning agent measured in advance without containing oil, under said determination wavelength in 1062
(reference data).In calibration curve record portion 1063, by every kind of oil being able to use in the processing of workpiece, record is based on
What the data creating that sample measured in advance known to the concentration using oil goes out went out indicates the dense of the oil under said determination wavelength
The calibration curve of relationship between degree and absorbance.In addition, ingredient between manufacturer or model different multiple processing oils
In the case where, the general calibration curve of these multiple processing oils also can be used.Condition entry portion 1064 is used for by measuring
Personnel input aftermentioned determination condition using input equipments such as touch tablets.Measurement control unit 1065 is carried out from illumination part
The control such as the beginning and end of the irradiation of the light of the light source in 104, the beginning and end of processing in above-mentioned each portion.
It is to stockpile (to measure with as concentration of oil for the cleaning solution in washed samples pond 103 that sample cell, which cleans liquid bath 19,
The cleaning solution of object is identical) slot.
(3) movement of the concentration of oil measuring device 10 of present embodiment
Illustrate the movement of the concentration of oil measuring device 10 of the present embodiment.Main narration herein will in steam clean/dry
Concentration of oil in steam used in dry slot 13 is close, be accumulated in regeneration after cleaning solution stockpile regeneration in slot 18 after clean
Liquid is set as the case where measure object of concentration of oil.
Firstly, being opened by inputting measurement after survey crew inputs defined determination condition using condition entry portion 1064
The instruction of beginning starts to measure.The determination condition inputted herein be for determine cleaned using the cleaning solution of measure object it is attached
In the information (such as manufacturer and model of processing oil) of the processing oil on workpiece.
When measure start when, open the rinse bath with the cleaning solution that stockpiles measure object first or to stockpile slot corresponding
Relay valve.Here, the open third relaying for stockpiling the third relay pipe 183 that slot 18 is connect with cleaning solution after regeneration that is set to is opened and closed
Valve 18V.Cleaning solution imported into sample cell 103 by flow path 101 after the regeneration of measure object as a result,.In addition, if measure object
Cleaning solution be that cleaning solution in the first rinse bath 11 then opens the first relaying open and close valve 11V, if it is in the second rinse bath 12
Cleaning solution then open second relaying open and close valve 12V.
Light of the illumination part 104 to cleaning solution irradiation said determination wavelength (290nm) in sample cell 103.Transmitted light inspection
Survey portion 105 measures the intensity I for having penetrated the transmission light quantity of cleaning solution, and intensity I is converted to digital signal to export.
Then, control unit 106 is entered the number of the intensity I of the expression transmission light quantity exported from transmission optical detection part 105
Signal, and reference data I is obtained from reference data record portion 10620, reference data I0It is free from the cleaning solution of oil
Transmission light quantity under said determination wavelength.The absorbance calculation part 1061A of control unit 106 is according to the cleaning solutions of these measure objects
Transmission light quantity intensity I and reference data I0Come find out measure object cleaning solution absorbance A=log10(I0/I)。
Then, the calibration curve selector 1061B of control unit 106 is inputted according to for determining by condition entry portion 1064
The information of processing oil obtains calibration curve corresponding with the processing oil determined from calibration curve record portion 1063.Moreover, calibration
The absorbance A of the cleaning solution of the measure object obtained by absorbance calculation part 1061A is applied to by school by curve application section 1061C
The calibration curve of directrix curve selector 1061B selection, finds out the concentration of processing oil.
After, by cleaning solution after the regeneration by measure object continuously imported into sample cell 103 and be repeated by
The measurement of the intensity I of the irradiation and transmission light quantity for the light that illumination part 104 carries out, thus finds out the concentration of processing oil repeatedly.And
And when the concentration of processing oil is more than specified value, the processing of the Liquid Residue remained in distillation tank 15 is carried out.The processing of Liquid Residue
It carries out in the following way: by boiling Liquid Residue come the cleaning solution and processing oil in separating residual liquid, thus discarding and remain on
Processing oil in distillation tank 15.
In addition, the cleaning solution in measure object is set as the cleaning solution in the first rinse bath 11 or in the second rinse bath 12
In the case of, find out the concentration of the processing oil in cleaning solution, energy repeatedly by method same as described above in the cleaning of workpiece
Enough terminated as the cleaning of workpiece when the time change of the concentration becomes specified value or less clearly using measurement result with finding out
Wash the timing of end.
(4) example of absorbance and calibration curve
Four kinds of oils (table 1) that production will be selected to be representative processing oil are mixed into respectively with different concentration identical
Obtained multiple samples in cleaning solution measure the transmission light quantity of every kind of oil and every kind of concentration to find out absorbance.Here, being
Wavelength is not limited to 290nm but in the range of 260nm~400nm by the properness that verifying will measure wavelength and be set as 290nm
The measurement of transmission light quantity is inside carried out.Here, having used the saturation type aliphatic hydrocarbon system as the multiple bond without carbon atom
Cleaning solution " NS100 " (the JX energy (strain) produce, the cleaning solution 1 of Fig. 2).In addition, the concentration of each oil be all set as 100ppm,
500ppm, 2000ppm and 10000ppm.
[table 1]
It is shown by every kind of oil that cleaning solution contains by measuring obtained transmission light quantity in Fig. 4.In addition, being shown in Fig. 5
Transmission light quantity according to Fig.4, finds out the obtained result of absorbance.They are all in the range of wavelength 280nm~300nm
Absorbance depends on the concentration of oil and has different values.
According to the absorbance of the every kind of oil at wavelength 290nm obtained in this way and every kind of concentration, by every kind of oil system
Make the calibration curve of the relationship between expression absorbance and concentration.The calibration curve produced is shown in Fig. 6.In addition, in each oil
In point, the data that concentration is 10000ppm are not used since calibration curve is detached from straight line.As shown in fig. 6, being in concentration
When 2000ppm or less calibration curve can be indicated with straight line.Thus, under at least 2000ppm concentration below, it can pass through
The concentration of oil measuring device and method of present embodiment carry out the measurement of concentration of oil.
In industrial cleaning machine shown in Fig. 1, in order to maintain workpiece cleaning quality, it is important that in distillation tank
The concentration that the oil of cleaning solution after regenerated regeneration is distilled in 15 is measured/is managed.In particular, cleaning solution is for steaming after regeneration
Vapour cleaning, the steam clean are that the steam generated in distillation tank 15 carries out essence to workpiece directly in steam clean/dry slot 13
Thin cleaning, therefore most importantly in the measurement/pipe for carrying out concentration of oil during continuously running of industrial cleaning machine
Reason.In accordance with the invention it is possible to carry out measurement/management of concentration of oil during this industrial cleaning machine is continuously run.
Measure using obtained calibration curve the experiment of the concentration of the oil after regeneration in cleaning solution.At this
In experiment, cleaning solution also uses above-mentioned NS100 or NS200 (the JX energy (strain) produce, the cleaning solution 2 of Fig. 2), uses the oil of addition
In point comprising additive shown in above-mentioned table 1, five kinds of cuttings are oily and five kinds of pressurization/punching oils.In this experiment, by claiming
The two is mixed after amount cleaning solution and oil, to make the sample for (concentration being known as " concentration of script ") known to concentration,
Carry out the comparison of the concentration and measured value of script.
Experimental result is shown in the chart of Fig. 7.In the chart, the concentration of script is set as horizontal axis, measured value is set as vertical
Axis.If measured value converges within ± the 10% of the concentration of script, data point is converged between two in chart dotted lines.
In addition, the data of whole samples are depicted in a chart in Fig. 7.As indicates, this obtained whole survey
Definite value probably converges within ± the 10% of the concentration of script.If there is ± 10% or so precision, then it is sufficiently used for industrial
In cleaning machine.
(5) variation
In the concentration of oil measuring device 10 of present embodiment, illumination part 104 can also in addition to by wavelength 280nm~
Between 300nm measurement wavelength (illumination for 290nm) is mapped to other than cleaning solution in the above example, will also as 320nm~
Second of a defined wavelength between 340nm measures wavelength illumination to cleaning solution.The light of this two different wavelength is wished
It is to be generated using monochromatic light and different two light sources of the monochromatic wavelength is issued.In this case, if it is possible to
The intensity for measuring both the light of said determination wavelength and the light of the second measurement wavelength, then be used as and universally detect the two wavelength
Light detector, as long as a transmission optical detection part 105.Or different transmitted lights can also be used by each wavelength
Test section.Under the second measurement wavelength, also with said determination wavelength (290nm) the case where in the same manner as, can be according to the suction of Fig. 5
The data of luminosity are indicated the calibration curve of the relationship between absorbance and concentration by every kind of oil production.
For example, calibration curve shown in (d) of Fig. 6 compared with the calibration curve of (a)~(c), acquire the point of absorbance with
The difference of calibration curve is slightly larger, therefore can improve precision by finding out the concentration of oil respectively with two measurement wavelength.
Description of symbols
1: industrial cleaning machine；10: concentration of oil measuring device；101: flow path；1011: inflow part；102: liquid feeding pump；
103: sample cell；1031: reference cell；104: illumination part；105: transmission optical detection part；106: control unit；1061: concentration of oil
Determination section；1061A: absorbance calculation part；1061B: calibration curve selector；1061C: calibration curve application section；1062: reference
Data recording section；1063: calibration curve record portion；1064: condition entry portion；1065: measurement control unit；11: the first rinse baths；
111: first circulation filtration system；112: the first overflow pipes；113: the first relay pipes；11V: the first relaying open and close valve；12: the second
Rinse bath；121: second circulation filtration system；122: the second overflow pipes；123: the second relay pipes；12V: the second relaying open and close valve；
13: steam clean/dry slot；14: temporarily stockpiling slot；15: distillation tank；151: float valve；16: heat exchanger；17: displacer；18:
Cleaning solution stockpiles slot after regeneration；183: third relay pipe；18V: third relays open and close valve；19: sample cell cleans liquid bath.
Claims (5)
1. the concentration of oil measuring device in a kind of cleaning solution, which is characterized in that have:
A) illumination part, will have measurement wavelength irradiation light be irradiated to measurement object liquid, the measurement wavelength be 280nm~
A defined wavelength between 300nm；
B) optical detection part is transmitted, measures the irradiation light through the intensity of transmitted light obtained from the measurement object liquid；With
And
C) concentration of oil determination section calculates the survey according to the intensity of the transmitted light determined by the transmission optical detection part
The absorbance under the measurement wavelength of object liquid is measured, according to the value of the absorbance and indicates the oil measured under wavelength
Concentration and absorbance between the calibration curve of relationship find out the concentration of the oil in the measurement object liquid.
2. the concentration of oil measuring device in cleaning solution according to claim 1, which is characterized in that be also equipped with:
The second irradiation light with the second measurement wavelength is irradiated to the measurement object liquid by the second illumination part, this second
Measurement wavelength is the defined wavelength between 320nm~340nm；
Second transmission optical detection part, measures second irradiation light through the second transmitted light obtained from the measurement object liquid
Intensity；And
Second concentration of oil determination section, according to the intensity of the second transmitted light determined by the second transmission optical detection part come
The absorbance under the second measurement wavelength of the measurement object liquid is calculated, according to the value of the absorbance and indicates described the
Two measure the calibration curve of the relationship between the concentration and absorbance of the oil under wavelength to find out in the measurement object liquid
The concentration of oil.
3. the concentration of oil measurement method in a kind of cleaning solution, which comprises the following steps:
There to be the irradiation light of measurement wavelength be irradiated to measurement object liquid, which is defined between 280nm~300nm
One wavelength,
The intensity that the irradiation light penetrates transmitted light obtained from the measurement object liquid is measured,
The absorbance under the measurement wavelength of the measurement object liquid is calculated according to the intensity of the transmitted light, according to the suction
The value of luminosity and the calibration curve of relationship between oil and absorbance under the measurement wavelength is indicated to find out the survey
Measure the concentration of the oil in object liquid.
4. the concentration of oil measurement method in cleaning solution according to claim 3, which is characterized in that
The measurement object liquid is not by having the molecular composition of the multiple bond of carbon atom.
5. the concentration of oil measurement method in cleaning solution according to claim 3 or 4, which is characterized in that further include following
Step:
The second irradiation light with the second measurement wavelength is irradiated to the measurement object liquid, which is 320nm
A defined wavelength between~340nm,
The intensity that second irradiation light penetrates the second transmitted light obtained from the measurement object liquid is measured,
The absorbance under the second measurement wavelength of the measurement object liquid is calculated according to the intensity of second transmitted light,
According to the value of the absorbance and indicate the described second calibration curve for measuring the oil under wavelength and the relationship between absorbance
To find out the concentration of the oil in the measurement object liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2016153372 | 2016-08-04 | ||
| JP2016-153372 | 2016-08-04 | ||
| PCT/JP2017/027732 WO2018025813A1 (en) | 2016-08-04 | 2017-07-31 | Oil concentration measuring device and oil concentration measuring method |
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|---|---|
| CN109564158A true CN109564158A (en) | 2019-04-02 |
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| CN201780048765.4A Pending CN109564158A (en) | 2016-08-04 | 2017-07-31 | Concentration of oil measuring device and concentration of oil measurement method |
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| Country | Link |
|---|---|
| JP (1) | JP7153923B2 (en) |
| CN (1) | CN109564158A (en) |
| WO (1) | WO2018025813A1 (en) |
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| JP7037206B2 (en) * | 2020-01-27 | 2022-03-16 | アクトファイブ株式会社 | Steam cleaning vacuum drying device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08114542A (en) * | 1994-10-14 | 1996-05-07 | Hitachi Cable Ltd | Press oil analyzing method |
| JPH0961349A (en) * | 1995-08-28 | 1997-03-07 | Tosoh Corp | Measuring method and measuring device for dirt quantity in detergent |
| CN102735630A (en) * | 2012-06-20 | 2012-10-17 | 中国石油天然气集团公司 | Method for rapidly determining extra-heavy oil and super-heavy oil sewage suspension |
| CN104897590A (en) * | 2015-06-03 | 2015-09-09 | 常州大学 | Method for quickly detecting content of petroleum hydrocarbon and thallus in oily sewage treatment system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988446A (en) * | 1988-05-14 | 1991-01-29 | Exxon Research And Engineering Company | Method for spectroscopic analysis of hydrocarbons |
| JP3989220B2 (en) | 2001-10-23 | 2007-10-10 | 株式会社デンソー | Extraction solvent composition and method for analyzing adhered oil content using the same |
| JP5303395B2 (en) | 2009-08-05 | 2013-10-02 | アクトファイブ株式会社 | Cleaning method and cleaning device |
| EP3139151B1 (en) | 2015-02-17 | 2020-05-27 | Act Five Co., Ltd. | Oil concentration measurement device and oil concentration measurement method |
| JP6306546B2 (en) | 2015-08-17 | 2018-04-04 | アクトファイブ株式会社 | Vacuum distillation equipment |
-
2017
- 2017-07-31 JP JP2018531888A patent/JP7153923B2/en active Active
- 2017-07-31 WO PCT/JP2017/027732 patent/WO2018025813A1/en active Application Filing
- 2017-07-31 CN CN201780048765.4A patent/CN109564158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08114542A (en) * | 1994-10-14 | 1996-05-07 | Hitachi Cable Ltd | Press oil analyzing method |
| JPH0961349A (en) * | 1995-08-28 | 1997-03-07 | Tosoh Corp | Measuring method and measuring device for dirt quantity in detergent |
| CN102735630A (en) * | 2012-06-20 | 2012-10-17 | 中国石油天然气集团公司 | Method for rapidly determining extra-heavy oil and super-heavy oil sewage suspension |
| CN104897590A (en) * | 2015-06-03 | 2015-09-09 | 常州大学 | Method for quickly detecting content of petroleum hydrocarbon and thallus in oily sewage treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018025813A1 (en) | 2019-05-30 |
| JP7153923B2 (en) | 2022-10-17 |
| WO2018025813A1 (en) | 2018-02-08 |
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