CN110018121B - Cleaning-free micro flow-through optical liquid pool and flow-through optical detection method - Google Patents
Cleaning-free micro flow-through optical liquid pool and flow-through optical detection method Download PDFInfo
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- CN110018121B CN110018121B CN201910167760.4A CN201910167760A CN110018121B CN 110018121 B CN110018121 B CN 110018121B CN 201910167760 A CN201910167760 A CN 201910167760A CN 110018121 B CN110018121 B CN 110018121B
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- G—PHYSICS
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
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- G—PHYSICS
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- G—PHYSICS
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
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Abstract
The invention discloses a cleaning-free micro flow-through optical liquid pool and a flow-through optical detection method, wherein the cleaning-free micro flow-through optical liquid pool comprises a liquid pipeline, a collimating lens, a liquid pool, an ultrasonic generating device and an antibacterial ring; the liquid pipeline quantity is 2, installs the both sides of liquid pool respectively, collimating lens, quantity is 2 installs respectively in the other both sides of liquid pool, and ultrasonic generating device installs in the upper surface of liquid pool, and the device total volume is no more than 50 x 50mm, specifically is based on circulation optical detection, utilizes ultrasonic technology, membrane art, realizes miniature circulation detection device's the mesh of exempting from to wash.
Description
Technical Field
The invention relates to a micro flow-through liquid optical detection device, in particular to a flow-through optical detection device which realizes the cleaning-free purpose of the micro flow-through detection device by utilizing an ultrasonic technology and a membrane technology.
Background
In the fields of food and medicine and chemical production, the flow-through optical liquid cell has wide application, wherein the cross-shaped flow-through optical liquid cell is most widely applied and structurally comprises a liquid flow pipeline and an optical detection passage; the flow-through optical liquid pool has some remarkable advantages, and can monitor the change, extremely small volume, large flow, adjustable optical path and the like of liquid in real time;
the optical detection path also comprises an Optical Interface Coupler (OIC), and the window material of the OIC generally requires good light transmittance, so that the OIC is made of fused quartz or sapphire; to ensure the tightness between the OIC and the liquid passage, the OIC is often designed to be non-detachable; this has caused problems, such as the decrease of optical window transmittance due to pigment deposition in the optical window of the OIC when detecting some colored and easily dyed liquids, which affects the detection result and causes immeasurable loss of production.
For example, the patent of application No. CN201611271635.0, "optical cell with adjustable size and system thereof" discloses an optical liquid cell with adjustable optical path, which can adjust the distance between optical windows through a certain mechanical device to achieve the purpose of directly adjusting the optical path, and can change the size of the optical path of the optical liquid cell as required, and the whole sealing property of the optical liquid cell is good, and meanwhile, the patent also discloses a detachable optical lens for ensuring the cleanness of the optical liquid cell. However, the detachable cleaning method adopted by the design has the risks of liquid pool pollution and surface scratches.
For example, in the patent of "a no-clean device capable of removing stains from clothes in real time" with application number CN201721145777.2, a portable ultrasonic washing device is disclosed, which uses ultrasonic waves to clean dust from clothes, eliminates the use of detergent, and illustrates the feasibility of ultrasonic cleaning of dust; however, the action of the device on ultrasound is not specified in detail and the optimum effect of the ultrasound action is not exerted.
Disclosure of Invention
Based on the defects, the invention designs a cleaning-free flow liquid cell and a flow optical detection method.
The technical scheme of the invention is as follows: a cleaning-free micro flow-through optical liquid pool comprises a liquid pipeline 1, a collimating lens 2, an ultrasonic generating device 3, a liquid pool 4 and a bacteriostatic ring 5; the number of the liquid pipelines 1 is two, the two liquid pipelines are respectively arranged on two sides of the liquid pool 4, the number of the collimating lenses 2 is two, the two collimating lenses are respectively arranged on the other two sides of the liquid pool 4, and the ultrasonic generating device 3 is arranged on the upper surface of the liquid pool 4; the antibacterial ring 5 is arranged on one side of the collimating lens 2 close to the liquid pool and does not protrude out of the inner wall surface of the liquid pool 4.
Further, the cross section of the outer shape of the antibacterial ring is a circular ring, the inner diameter of the ring is the same as the maximum diameter of the collimating lens, and the outer diameter of the antibacterial ring is the same as the outer contour diameter of the collimating lens.
Further, in the ultrasonic generator 3, the power range of the ultrasonic wave is 200W to 300W; the ultrasonic wave is intermittently started, and is started once every 30 seconds, and the action time is 3 seconds; the ultrasonic wave that ultrasonic generator 3 sent can be used in on the antibacterial ring 5, the material of antibacterial ring 5 is selected for the polyethylene that mixes antibacterial nano-material.
Further, the antibacterial nano material comprises silver nano particles and zinc oxide nano particles, and the mass ratio of the silver nano particles to the zinc oxide nano particles is 5: 2; the proportion of nanoparticles incorporated in the polyethylene material was 7% by mass.
Furthermore, the total volume of the liquid pool 4 is not more than 50 x 50mm, and the cross section of the bacteriostatic ring 5 is a circular ring with the diameter of 2 mm.
The technical scheme of the detection method comprises the following steps: a flow-through optical detection method for a wash-free micro flow-through optical liquid cell, the method comprising:
the light path crosses the liquid flow direction in the liquid pool 4 in a cross way, so that light can penetrate through the flowing liquid, and the liquid property is judged by calculating the degree of absorption of the optical fiber when the optical fiber passes through the liquid in a certain stroke and the specific wavelength of the absorption;
the optical signals are intermittently acquired, the acquisition time is 5 seconds, 10 seconds, 15 seconds, 20 seconds and 25 seconds after each ultrasonic wave stops acting, the acquisition is carried out five times in an action period, and the ultrasonic wave action formula is as follows:
T＝5n+30，n＝1，2，3....
wherein T is the time point unit of ultrasonic action in seconds, and n is the ultrasonic action frequency after starting;
wherein W is the power of the ultrasonic action, W0The initial power of the ultrasound is adopted, and t is the current time unit of second;
further, the ultrasound emitted by the ultrasound generating device 3 and the collected spectrum work at intervals, the ultrasound starts to act when the time is defined as 0s and 30s at a certain moment, the acting time is 3s, and the ultrasound power increases progressively according to a sine function during the acting time; after the ultrasonic action is finished, acquiring first spectral data at the 38 th time, acquiring second spectral data at the 43 th time, acquiring third spectral data at the 48 th time, acquiring fourth spectral data at the 53 th time, acquiring fifth spectral data at the 58 th time, and averaging the fifth spectral data to obtain spectral data of one detection period; and (4) acquiring the spectral data in a way of staggering with the ultrasonic action time point.
The invention has the following technical effects:
the invention adopts durable materials to manufacture the optical flow-through liquid pool, combines the ultrasonic technology and the bacteriostatic material technology, leads the pigment or other substances to be difficult to be adhered and deposited on the inner wall of the pipeline, leads the microorganism to be difficult to be propagated on the surface of the lens, achieves the aim of cleaning-free of the flow-through liquid pool, simultaneously leads the size of the flow-through liquid pool to be less than 5 x 5cm, and is suitable for the integrated installation environment.
The invention aims to solve the problems of the traditional optical liquid pool that the light transmittance of an optical window is reduced and the detection precision is reduced due to the phenomena of pigment deposition, scaling and the like when detecting colored liquid, organic acid and other liquids; the invention provides a cleaning-free optical liquid pool, which adopts an ultrasonic technology, a bacteriostatic material and an anti-adhesion film, and can greatly reduce the adhesion degree of pigments on an optical window and the survival probability of microorganisms on the surface of the optical window so as to reduce the formation of a bacterial film.
The invention relates to a cleaning-free flow optical detection method, which particularly prevents precipitates and pigments from depositing and adhering on the inner surface of a liquid pool and the surface of a collimating lens under the action of ultrasonic waves; the ultrasonic wave has the effects that firstly, the ultrasonic wave forms supercavity in water, dirt can be removed from the surface of the container under the mechanical action and vibration generated by the rupture of the supercavity, and secondly, after the ultrasonic wave acts on the antibacterial ring, the strength of the antibacterial ring for releasing antibacterial ions in the water can be enhanced, and the antibacterial effect of the antibacterial ring is enhanced; further, the ultrasonic frequency changes and the ultrasonic power is gradually increased during the ultrasonic action.
The invention relates to a cleaning-free flow optical detection method, in particular to a cross-type liquid flow optical detection method, which comprises the following steps: the light path and the liquid flow direction are crossed in a cross mode, so that light rays can penetrate through the flowing liquid, and the liquid property is judged by calculating the degree of absorption of the optical fiber when the optical fiber passes through the liquid in a certain stroke and the specific wavelength of the absorption; the spectrum information acquisition and the ultrasonic action work respectively, so that the interference of the ultrasonic action on the spectrum detection is avoided.
The cleaning-free circulation optical detection device is characterized in that a bacteriostatic ring is arranged on the surface of a collimating lens to prevent microorganisms from attaching and propagating, and the bacteriostatic ring is nested around the collimating lens. It should be noted that, in the ultrasonic generator 3, the power range of the ultrasonic wave is 200W to 300W; the ultrasonic wave is intermittently started, and is started once every 30 seconds, and the action time is 3 seconds; the ultrasonic wave that ultrasonic generator 3 sent can be used in on the antibacterial ring 5, the material of antibacterial ring 5 is selected for the polyethylene that mixes antibacterial nano-material. When the antibacterial nano material comprises silver nano particles and zinc oxide nano particles, the mass ratio of the silver nano particles to the zinc oxide nano particles is 5: 2; when the mass ratio of the nano particles mixed into the polyethylene material is 7%, the ultrasonic working power and the intermittent start can be matched with the bacteriostatic nano material to achieve the optimal descaling and bacteriostatic effects.
Drawings
FIG. 1 is a drawing of the apparatus
FIG. 2 is a mounting diagram of a bacteriostatic ring
In the figure, (1) a liquid pipeline, (2) a collimating lens, (3) an ultrasonic generating device, (4) a liquid pool, and (5) an antibacterial ring;
Detailed Description
A non-cleaning micro flow-through optical liquid tank as shown in fig. 1-2, comprising a liquid pipeline 1, a collimating lens 2, an ultrasonic generating device 3, a liquid tank 4 and a bacteriostatic ring 5; the number of the liquid pipelines 1 is two, the two liquid pipelines are respectively arranged on two sides of the liquid pool 4, the number of the collimating lenses 2 is two, the two collimating lenses are respectively arranged on the other two sides of the liquid pool 4, and the ultrasonic generating device 3 is arranged on the upper surface of the liquid pool 4; the antibacterial ring 5 is arranged on one side of the collimating lens 2 close to the liquid pool and does not protrude out of the inner wall surface of the liquid pool 4.
The cross section of the outer shape of the antibacterial ring is a circular ring, the inner diameter of the ring is the same as the maximum diameter of the collimating lens, and the outer diameter of the antibacterial ring is the same as the outer contour diameter of the collimating lens.
In the ultrasonic generating device 3, the power range of ultrasonic waves is 200W-300W; the ultrasonic wave is intermittently started, and is started once every 30 seconds, and the action time is 3 seconds; the ultrasonic wave that ultrasonic generator 3 sent can be used in on the antibacterial ring 5, the material of antibacterial ring 5 is selected for the polyethylene that mixes antibacterial nano-material.
The antibacterial nano material comprises silver nano particles and zinc oxide nano particles, and the mass ratio of the silver nano particles to the zinc oxide nano particles is 5: 2; the proportion of nanoparticles incorporated in the polyethylene material was 7% by mass.
The total volume of the liquid pool 4 is not more than 50 x 50mm, and the cross section of the bacteriostatic ring 5 is a circular ring with the diameter of 2 mm.
The invention relates to a cleaning-free circulation optical detection method, which specifically prevents microorganisms from attaching and propagating on the surface of a lens under the action of a bacteriostatic ring, and is characterized in that the material is polyethylene mixed with a bacteriostatic nano material, and the mass ratio of the bacteriostatic nano material, specifically silver nano particles to zinc oxide nano particles is 5: 2; the proportion of the nano particles mixed into the polyethylene material is 7 percent by mass; furthermore, the bacteriostatic material has the beneficial effects that after the action of ultrasonic waves, the strength of bacteriostatic ions released by bacteriostatic rings in water can be enhanced, and the bacteriostatic effect of the bacteriostatic rings is enhanced; further, the ultrasonic frequency changes and the ultrasonic power is gradually increased during the ultrasonic action.
The invention relates to a cleaning-free flow-through optical detection method, which particularly prevents sediment and pigment from depositing and adhering on the inner surface of a liquid pool under the action of ultrasonic waves, and is characterized by comprising the following steps: the power range of the ultrasonic wave is 200W-300W; the ultrasonic wave is started intermittently, and is started once every 30s, and the action time is 3 s.
The invention relates to a cleaning-free flow optical detection method, in particular to a cross-type liquid flow optical detection method, which comprises the following steps: the light path and the liquid flow direction are crossed in a cross mode, so that light rays can penetrate through the flowing liquid, and the liquid property is judged by calculating the degree of absorption of the optical fiber when the optical fiber passes through the liquid in a certain stroke and the specific wavelength of the absorption; the optical signals are intermittently acquired for 5 th, 10 th, 15 th, 20 th and 25 th seconds after the ultrasonic wave stops acting, and the optical signals are acquired five times in one acting period. The formula of the ultrasonic action is as follows:
T＝51n+30，n＝1，2，3…
wherein T is the time point unit of ultrasonic action in seconds, and n is the ultrasonic action frequency after starting;
wherein W is the power of the ultrasonic action, W0The initial power of the ultrasound is adopted, and t is the current time unit of second;
the method comprises the following steps: the ultrasonic and the collection spectrum work at intervals, the time is defined as 0s at a certain moment, the ultrasonic generator starts to act when the time is 30s, the acting time is 3s, and the ultrasonic power is gradually increased according to a sine function; after the ultrasonic action is finished, acquiring first spectral data at the 38 th time, acquiring second spectral data at the 43 th time, acquiring third spectral data at the 48 th time, acquiring fourth spectral data at the 53 th time, acquiring fifth spectral data at the 58 th time, and averaging the fifth spectral data to obtain spectral data of one detection period; furthermore, the collection of the spectrum data is carried out in a staggered mode with the ultrasonic action time point, and the beneficial effect that the spectrum detection precision is prevented from being influenced by supercavity generated by ultrasonic waves.
In summary, the cleaning-free micro flow-through optical liquid tank of the present invention comprises a liquid pipeline, a collimating lens, a liquid tank, an ultrasonic generating device, and an antibacterial ring; the liquid pipeline quantity is 2, installs respectively in the both sides of liquid pond, collimating lens, quantity is 2 installs respectively in the other both sides of liquid pond, and ultrasonic generating device installs in the upper surface of liquid pond, and the device total volume is no more than 50 x 50mm, specifically is based on circulation optical detection, utilizes ultrasonic technology, membrane technology, realizes miniature circulation detection device's the mesh of exempting from to wash.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A cleaning-free micro flow-through optical liquid pool is characterized by comprising a liquid pipeline (1), a collimating lens (2), an ultrasonic generating device (3), a liquid pool (4) and a bacteriostatic ring (5); the ultrasonic wave generating device comprises two liquid pipelines (1), two collimating lenses (2) and an ultrasonic generating device (3), wherein the two liquid pipelines are respectively arranged on two sides of a liquid pool (4), the two collimating lenses (2) are respectively arranged on the other two sides of the liquid pool (4), and the ultrasonic generating device (3) is arranged on the upper surface of the liquid pool (4); the antibacterial ring (5) is arranged on one side of the collimating lens (2) close to the liquid pool and does not protrude out of the inner wall surface of the liquid pool (4); the ultrasonic wave emitted by the ultrasonic generating device (3) acts on the antibacterial ring (5).
2. A wash-free micro flow-through optical liquid cell as claimed in claim 1, wherein the outer shape of the bacteriostatic ring is a circular ring with a circular cross-section, the inner diameter of the ring is the same as the maximum diameter of the collimating lens, and the outer diameter of the bacteriostatic ring is the same as the outer diameter of the collimating lens.
3. A wash-free micro flow-through optical liquid cell according to claim 1, wherein in the ultrasound generating means (3), the power of the ultrasound waves is in the range of 200W to 300W; the ultrasonic wave is intermittently started, and is started once every 30 seconds, and the action time is 3 seconds; the material of the antibacterial ring (5) is selected from polyethylene mixed with antibacterial nano materials.
4. The no-clean micro flow-through optical liquid cell as claimed in claim 3, wherein the bacteriostatic nano-material comprises silver nano-particles and zinc oxide nano-particles in a mass ratio of 5: 2; the proportion of nanoparticles incorporated in the polyethylene material was 7% by mass.
5. A wash-free micro flow-through optical liquid cell according to claim 1, wherein the total volume of the liquid cell (4) is no more than 50 x 50mm, and the cross-section of the bacteriostatic ring (5) is a circular ring with a diameter of 2 mm.
6. A flow-through optical detection method of a wash-free micro flow-through optical liquid cell according to any of claims 1-5, comprising:
the light path is crossed with the flow direction of the liquid in the liquid pool (4) in a cross manner, so that light rays can penetrate through the flowing liquid, and the liquid property is judged by calculating the degree of absorption of the optical fiber when the optical fiber passes through the liquid in a certain stroke and the specific wavelength of the absorption;
the optical signals are intermittently acquired, the acquisition time is 5 seconds, 10 seconds, 15 seconds, 20 seconds and 25 seconds after each ultrasonic wave stops acting, the acquisition is carried out five times in an action period, and the ultrasonic wave action formula is as follows:
T＝5n+30，n＝1，2，3....
wherein T is the time point unit of ultrasonic action in seconds, and n is the ultrasonic action frequency after starting;
wherein W is the power of the ultrasonic action, W0For the initial power of the ultrasound, t is the current time unit in seconds.
7. A flow-through optical detection method of a wash-free micro flow-through optical liquid cell as claimed in claim 6, characterized in that the ultrasound generated by the ultrasound generating means (3) and the collection spectrum are operated at intervals, defined as time 0s at a certain time, the ultrasound is started to operate at time 30s, the operating time is 3s, during which the ultrasound power is increased in accordance with a sine function; after the ultrasonic action is finished, acquiring first spectral data at the 38 th time, acquiring second spectral data at the 43 th time, acquiring third spectral data at the 48 th time, acquiring fourth spectral data at the 53 th time, acquiring fifth spectral data at the 58 th time, and averaging the fifth spectral data to obtain spectral data of one detection period; and (4) acquiring the spectral data in a way of staggering with the ultrasonic action time point.
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