CN109459389B - Automatic wash optics flow cell - Google Patents
Automatic wash optics flow cell Download PDFInfo
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- CN109459389B CN109459389B CN201811057949.XA CN201811057949A CN109459389B CN 109459389 B CN109459389 B CN 109459389B CN 201811057949 A CN201811057949 A CN 201811057949A CN 109459389 B CN109459389 B CN 109459389B
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- wall
- glass tube
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- 238000004140 cleaning Methods 0.000 claims abstract description 101
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 210000001503 joint Anatomy 0.000 claims abstract description 22
- 238000013461 design Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 36
- 239000011521 glass Substances 0.000 description 21
- 210000004027 cell Anatomy 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 210000005056 cell body Anatomy 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
-
- 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
- G01N21/01—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
-
- 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
- G01N21/01—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
- G01N2021/152—Scraping; Brushing; Moving band
Landscapes
- Physics & Mathematics (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)
- Optical Measuring Cells (AREA)
Abstract
The invention provides a self-cleaning optical flow cell, comprising: a quartz glass tube; end covers arranged at the upper end and the lower end of the quartz glass tube, and concave piston limit washers are arranged at the contact positions of the inner wall of the end cover and the quartz glass tube; the butt joint is welded at the top of the end cover, the blind plate limiting check ring is arranged in the end cover and positioned at the bottom of the circulation cavity, and a through hole communicated with the circulation cavity is formed in the inner side wall of the blind plate limiting check ring; install the cleaning element in quartz glass tube, cleaning element is including wasing piston, sleeve pipe, removal pipe, and the blind plate is all installed at the upper and lower both ends of removal pipe, has seted up the water conservancy diversion hole on the lateral wall of the butt joint department of lower extreme and blind plate about the removal pipe, and the sleeve pipe cup joints in the outside of removal pipe, washs the piston and fixes in the sheathed tube outside, washs the outer wall of piston and the inner wall of quartz glass tube and hugs closely the setting. The automatic cleaning optical flow cell has a simple structure and ingenious design, and can automatically complete the cleaning work on the inner side of the tube wall on line by utilizing the pressure of the liquid.
Description
Technical Field
The invention relates to the technical field of optical analysis instruments, in particular to an automatic cleaning optical flow cell.
Background
There has long been no very good way to clean contaminants from the inside walls of containers, particularly optical analytical instruments and continuous on-line analytical instruments that pass the transmittance test. In the prior art, the cleaning modes such as common cleaning modes comprise: motor-driven mechanical brush cleaning, vibration cleaning, jet cleaning, medicine-kit cleaning, ultrasonic cleaning, etc., but for quartz glass tube optical flow cells commonly used in optical analytical instruments, the conventional liquid cleaning methods have the following disadvantages: (1) the motor drives the mechanical brush to clean, the structure is more complicated, mechanical faults are easy to occur, if the strength of an object contacted with glass is higher, the visibility rate library is easy to influence the measurement result, and the cleaning part is not easy to seal and clean with the glass part, only the measurement work can be stopped, and the recovery working state after the cleaning is also more complicated; bubbles are easy to generate, and the motor cannot be preserved and resistant to high temperature; (2) the vibration cleaning and the cleaning of the inner wall of the glass are indirect, and besides the larger power driving of the outlet, the influence on the sealing part is caused, even the glass tube is damaged due to strong vibration, if the measuring part cannot be restored, the measuring baseline drift is influenced, the cleaning is not easy, and finally the measuring result is influenced; (3) the jet flow cleaning is carried out, because the cleaning state is related to the pressure, the cleaning effect cannot be achieved at all when the pressure is small, the pressure is too large and can sometimes exceed the storage capacity of glass and sealing materials, the viscosity of liquid can directly influence the cleaning effect and the turbulence can influence the measurement result due to the complexity of fluid mechanics, the jet flow hole can be blocked if the sample contains water and the impurity amount is large, the jet flow technical structure is special, the design is not easy to succeed, and the cleaning effect is not very good; (4) the reagent cleaning means that the measuring system stops detecting, and the reagent is injected into the polluted glass tube, such as: methanol, ethanol, acetone, toluene, acid and alkaline liquids and special cleaning liquids, when the measuring system has to stop working and perform complex operation, the cleaning liquid can be injected into the glass container, and the glass container needs to be soaked and diluted, and then the glass container is possibly cleaned by stirring and rubbing with a brush and related objects, and besides the continuous measurement can be influenced by the operation of the system, the following defects are also present: the cleaning liquid is not easy to clean, the cleaning liquid is not allowed at all for some detected liquid related to chemical reaction, if the glass container is taken down and is difficult to restore in place to influence the measurement standard, the detection system sometimes has to be recalibrated, and the cleaning liquid cannot be suitable for continuous samples with higher output temperature, high solidifying point and higher viscous resistance; (5) the ultrasonic cleaning method is characterized in that an ultrasonic element is tightly combined with a glass container, after an ultrasonic generator is started, the glass container is also vibrated in an ultrasonic frequency band, and pollutants on the inner wall of glass are cleaned by utilizing high-speed ultrasonic vibration, so that the ultrasonic element and the glass can be structurally realized into a whole, and an original flow path structure is not damaged during cleaning, but the ultrasonic driving power is high, the cleaning effect is not good for liquid with high viscosity, and for continuously flowing liquid, when the temperature is higher than 70 ℃, an ultrasonic generating element, namely piezoelectric ceramic, possibly fails, the cleaning effect is not achieved, and moreover, because stronger ultrasonic electromagnetic radiation easily interferes with a measuring sensor, the ultrasonic cleaning effect is proved to be less obvious by practice.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an automatic cleaning optical flow cell which can automatically complete the cleaning work of the inner side of the pipe wall on line by utilizing the pressure of liquid.
In order to achieve the above technical solution, the present invention provides an automatic cleaning optical flow cell, including: a quartz glass tube; end covers arranged at the upper end and the lower end of the quartz glass tube, and concave piston limit washers are arranged at the contact positions of the inner wall of the end cover and the quartz glass tube; the installation butt joint is welded at the center of the top of the end cover and used for butt joint of an external hose, and a circulation cavity communicated with the end cover is arranged at the center of the installation butt joint; the blind plate limiting check ring is arranged in the end cover and positioned at the bottom of the circulation cavity, a through hole communicated with the circulation cavity is formed in the inner side wall of the blind plate limiting check ring, and a blind plate limiting moving groove is formed in a drop space between the concave piston limiting gasket and the blind plate limiting check ring; install the cleaning element in quartz glass tube, cleaning element is including wasing piston, sleeve pipe, removal pipe and blind plate, the blind plate is all installed at the upper and lower both ends of removal pipe, the water conservancy diversion hole has been seted up on the lateral wall of removal pipe upper and lower end and blind plate butt joint department, and the sleeve pipe cup joints in the outside of removal pipe, the removal pipe can reciprocate in the sleeve pipe, washs the piston and fixes in the sheathed tube outside, the outer wall of wasing the piston is hugged closely with quartz glass tube's inner wall and is set up.
In the technical scheme, when liquid enters the inner cavity of the quartz glass tube from bottom to top through the circulating cavity at the center of the butt joint through the installation of the lower end under a certain pressure, the liquid is firstly contacted with the blind plate at the lower end under the action of hydraulic pressure so as to push the moving tube to move relative to the sleeve, so that the diversion hole at the lower end of the moving tube moves into the sleeve and the lower port of the sleeve is blocked through the blind plate at the lower end, at the moment, along with the continuous increase of the hydraulic pressure, the whole cleaning assembly can be pushed to move from bottom to top of the quartz glass tube, the inner side wall of the quartz glass tube is cleaned through the cleaning piston which is tightly attached to the inner wall of the quartz glass tube in the moving process, when the cleaning assembly moves to the upper end of the quartz glass tube, the upper blind plate on the moving tube is firstly contacted and limited by the blind plate limiting check ring, the sleeve and the cleaning piston continue to move under the action of hydraulic pressure, when the sleeve and the cleaning piston move to the limit contact and limit with the piston, the diversion hole at the lower end of the moving tube is exposed from the sleeve, at the moment, the liquid enters the inner side wall of the moving tube through the diversion hole at the lower end and finally is discharged from the inner side wall of the quartz glass tube through the diversion hole at the upper end, and finally discharged from the inner wall of the quartz glass tube through the blind plate is automatically arranged on the inner wall of the cleaning assembly. When the cleaning assembly needs to be cleaned again, only liquid needs to be reversely introduced, and the reverse movement of the cleaning assembly can be realized.
Preferably, the sleeve, the moving tube and the blind plate are made of metal materials, the blind plate is welded at the upper end edge and the lower end edge of the moving tube, the moving tube is sleeved in the sleeve, a moving gap is reserved between the outer wall of the moving tube and the inner wall of the sleeve, friction force between the outer wall of the moving tube and the inner wall of the sleeve can be reduced by reserving the moving gap between the outer wall of the moving tube and the inner wall of the sleeve, and relative movement between the moving tube and the sleeve can be realized even under smaller pressure.
Preferably, the spacing retaining ring of blind plate is annular retaining ring, including outer retaining ring and interior retaining ring, be open design between the top of outer retaining ring and interior retaining ring, be closed design between the bottom of outer retaining ring and interior retaining ring, set up the through-hole on the lateral wall of interior retaining ring, realize spacing to the removal of blind plate after blind plate and interior retaining ring contact, because be open design between the top of outer retaining ring and interior retaining ring, after the guiding hole exposes, liquid can get into the inside of removal pipe and by the guiding hole of upper end through the guiding hole of lower extreme, finally install the circulation chamber at the butt joint center through the through-hole of seting up on the lateral wall of interior retaining ring.
Preferably, the outer side of the end cover is sleeved with a metal protection tube so as to protect the upper end and the lower end of the quartz glass tube.
Preferably, the automatic cleaning optical flow cell further comprises a first three-way electromagnetic valve, a second three-way electromagnetic valve, a controller, an optical sensor and a light source, wherein the light source and the optical sensor are symmetrically arranged on the left side and the right side of the quartz glass tube, the first three-way electromagnetic valve and the second three-way electromagnetic valve are respectively connected with an installation butt joint welded at the top centers of the upper end cover and the lower end cover through pipelines, and the first three-way electromagnetic valve, the second three-way electromagnetic valve, the optical sensor and the light source are electrically connected with the controller. The controller can control the automatic opening and closing of the first three-way electromagnetic valve and the second three-way electromagnetic valve, so that the quartz glass tube can be cleaned in different directions by controlling the flow direction of liquid.
The invention provides an automatic cleaning optical flow cell, which has the beneficial effects that: this self-cleaning optics flow cell simple structure, design benefit need not to dismantle quartz glass tube during the washing, can not influence the continuity of work, and utilize the online automatic washing work to the pipe wall inboard of accomplishing of the pressure of liquid self, whole cleaning module work in inclosed glass container and do not influence the continuous flow of liquid, cleaning module also can not cause the influence to the testing result because of producing the air in the removal process, and adopt the cleaning piston of circulation formula surface contact to wash glass inner wall, can not harm glass inner wall, again because the lubrication effect of liquid self can not appear cleaning module jam phenomenon, but also the pressure is just normal work as long as is greater than 0.15 Mpa.
Drawings
FIG. 1 is a cross-sectional view of the cleaning assembly of the present invention in the bottom of a quartz glass tube.
FIG. 2 is a cross-sectional view of the cleaning assembly of the present invention in the middle of a quartz glass tube.
FIG. 3 is a cross-sectional view of the cleaning assembly of the present invention positioned on top of a quartz glass tube.
FIG. 4 is a schematic view of a cleaning assembly according to the present invention.
FIG. 5 is an enlarged view of a portion of the cleaning assembly of the present invention in contact with the interior of the end cap.
Fig. 6 is a schematic structural view of a blind plate limiting retainer ring according to the present invention.
FIG. 7 is a schematic diagram of a system of the present invention using structural connections.
In the figure: 1. a flow cell body; 11. a quartz glass tube; 12. cleaning the assembly; 121. cleaning the piston; 122. a sleeve; 123. a moving tube; 124. a deflector aperture; 125. a blind plate; 13. an end cap; 14. a protective tube; 15. butt joint; 16. a flow-through chamber; 17. a blind plate limiting retainer ring; 171. an outer retainer ring; 172. an inner retainer ring; 173. a through hole; 18. a piston limit washer; 19. the blind plate limits the moving groove; 2. a first three-way electromagnetic valve; 3. a second three-way electromagnetic valve; 4. a controller; 5. an optical sensor; 6. a light source.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
Examples: an automatic cleaning optical flow cell.
Referring to fig. 1 to 7, an automatic cleaning optical flow cell comprises a flow cell body 1, a first three-way electromagnetic valve 2, a second three-way electromagnetic valve 3, a controller 4, an optical sensor 5 and a light source 6, wherein the light source 6 and the optical sensor 5 are symmetrically arranged at the left side and the right side of the flow cell body 1, the first three-way electromagnetic valve 2 and the second three-way electromagnetic valve 3 are respectively connected with the flow cell body 1 through pipelines, the first three-way electromagnetic valve 2, the second three-way electromagnetic valve 3, the optical sensor 5 and the light source 6 are electrically connected with the controller 4, in the actual detection process, the light source is used for providing needed light for optical detection, detected data are input into the controller for storage and output through the optical sensor 5, and the automatic opening and closing of the first three-way electromagnetic valve 2 and the second three-way electromagnetic valve 3 can be controlled through the controller 4, so that the flow direction of liquid can be controlled, and the cleaning of the flow cell body 1 can be realized through changing the flow direction of the liquid; wherein the flow cell body 1 comprises a quartz glass tube 11; the end covers 13 are arranged at the upper end and the lower end of the quartz glass tube 11, the outer sides of the end covers 13 are sleeved with metal protection tubes 14 so as to protect the upper end and the lower end of the quartz glass tube 11, and concave piston limit washers 18 are arranged at the contact positions of the inner wall of the end covers 13 and the quartz glass tube 11; the first three-way electromagnetic valve 2 or the second three-way electromagnetic valve 3 can be connected with the installation butt joint 15 through a hose, the center of the installation butt joint 15 is provided with a circulation cavity 16 communicated with the end cover 13, and the circulation cavity 16 is used for realizing the input or output of liquid; the blind plate limiting retainer ring 17 is arranged in the end cover 13 and positioned at the bottom of the circulation cavity 16, the blind plate limiting retainer ring 17 is an annular retainer ring and comprises an outer retainer ring 171 and an inner retainer ring 172, an open design is arranged between the tops of the outer retainer ring 171 and the inner retainer ring 172, a closed design is arranged between the bottoms of the outer retainer ring 171 and the inner retainer ring 172, a through hole 173 communicated with the circulation cavity 16 is formed in the side wall of the inner retainer ring 172, a drop space between the concave piston limiting retainer ring 18 and the blind plate limiting retainer ring 17 forms a blind plate limiting moving groove 19, the blind plate limiting moving groove 19 has the effect that only the blind plate 125 in the cleaning assembly 12 can enter the space, and the cleaning piston 121 cannot enter the space, so that the guide hole 124 on the moving pipe 123 can be better exposed; install the cleaning element 12 in quartz glass tube 11, cleaning element 12 includes cleaning piston 121, sleeve pipe 122, moving tube 123 and blind plate 125, blind plate 125 is all installed at the upper and lower both ends of moving tube 123, the water conservancy diversion hole 124 has been seted up on the lateral wall of moving tube 123 upper and lower end and blind plate 125 butt joint department, and sleeve pipe 122 cup joints in the outside of moving tube 123, moving tube 123 can reciprocate in sleeve pipe 122, and cleaning piston 121 fixes in the outside of sleeve pipe 122, and cleaning piston 121 adopts acid and alkali resistance and has the preparation of certain elastic polyester rubber material to form, can not harm quartz glass tube 11 inner wall, the outer wall of cleaning piston 121 is hugged closely with quartz glass tube 11's inner wall and is set up, sleeve pipe 122, moving tube 123 and blind plate 125 are the aluminum alloy material, and blind plate 125 welds on moving tube 123 upper and lower extreme limit, and moving tube 123 cup joint in sleeve pipe 122 and moving gap reservation about 0.2mm between moving tube 123 outer wall and the sleeve pipe 122 inner wall, through can reduce moving gap between moving tube 123 outer wall and the sleeve pipe 122 inner wall and moving tube 122 inner wall and the relative friction between 122 and the relative motion tube 122 of the inner wall is also realized.
For further explanation of the present invention, referring specifically to fig. 1 and 7, the working principle of the present invention is explained as follows: when the automatic cleaning optical flow cell is used for detecting an optical analysis instrument, the change of the concentration and the color of liquid in the quartz glass tube 11 can be continuously measured through the light sources 6 and the optical sensors 5 symmetrically arranged on two sides of the quartz glass tube 11, detected data are input into the controller 4 through the optical sensors 5 for storage and output, when the liquid parameters are measured, the cleaning component 12 stays at the upper end or the lower end of the quartz glass tube 11 (as shown in fig. 1 and 3), when the cleaning is needed, the controller 4 latches the measured data, meanwhile, the controller 4 controls the first three-way electromagnetic valve 2 and the second three-way electromagnetic valve 3 to act, the reverse sample injection of the liquid is realized, and the cleaning component 12 starts to move, and the specific process is as follows:
1) The controller 4 controls the A, B port of the first three-way electromagnetic valve 2 to be communicated and the B, C port of the second three-way electromagnetic valve 3 to be communicated, because the liquid sample to be tested is provided with pressure, the liquid sample flows from the port A and the port B of the first three-way electromagnetic valve 2 and enters the inner cavity of the quartz glass tube 11 from bottom to top through the flow cavity 16 in the center of the butt joint 15 through the installation of the lower end;
2) Under the action of hydraulic pressure, liquid is firstly contacted with a blind plate 125 positioned at the lower end of the quartz glass tube 11 so as to push the moving tube 123 to move relative to the sleeve 122, so that a diversion hole 124 at the lower end of the moving tube 123 moves into the sleeve 122 and the lower port of the sleeve 122 is plugged through the blind plate 125 at the lower end, at the moment, along with the continuous increase of the hydraulic pressure, the whole cleaning assembly 12 can be pushed to move from bottom to top in the quartz glass tube 11, and the inner side wall of the quartz glass tube 11 is cleaned through a cleaning piston 121 which is tightly attached to the inner wall of the quartz glass tube 11 in the moving process;
3) When the cleaning assembly 12 moves to the upper end of the quartz glass tube 11, the upper blind plate 125 on the moving tube 123 in the cleaning assembly 12 is firstly in contact with the blind plate limiting retainer ring 17 to limit, so that the moving tube 123 stops moving, and under the action of hydraulic pressure, the sleeve 122 and the cleaning piston 121 continue to move under the action of hydraulic pressure, when the sleeve 122 and the cleaning piston 121 move to be in contact with and limit with the piston limiting gasket 18, the diversion hole 124 at the lower end of the moving tube 123 is exposed from the sleeve 122, at the moment, liquid enters the moving tube 123 through the diversion hole 124 at the lower end and is discharged through the diversion hole 124 at the upper end, and finally enters the circulation cavity 16 at the center of the upper end mounting abutment 15 through the through hole 173 formed in the side wall of the inner retainer ring 172 on the blind plate limiting retainer ring 17 to be discharged, so that the automatic online cleaning work of the inner wall of the quartz glass tube 11 is realized;
4) When the cleaning is needed to be continued, the controller 4 is used for enabling the A, C of the first three-way electromagnetic valve 2 to be connected, the A, C of the second three-way electromagnetic valve 3 is connected, liquid is injected from the upper port, the sample moves from top to bottom when passing through the quartz glass tube 11, and the cleaning process is as described in the steps 1-4, and the cleaning assembly 12 stays at the upper part in a normal state due to the fact that the inner structures of the upper end cover and the lower end cover are identical to the two ends of the cleaning assembly 12.
The controller 4 can monitor the cleaning process and the cleaning effect in real time, and automatically adjust the cleaning frequency after judging and analyzing according to the pollution degree, so that the inner wall of the glass tube is prevented from being polluted, and the accuracy and the stability of measured data are ensured. Depending on the state of motion of the cleaning assembly 12, it may also be determined whether a sample has flowed through or not, and whether the process conditions are satisfactory.
This self-cleaning optics flow cell simple structure, design benefit, need not to dismantle quartz glass tube 11 during the washing, can not influence the continuity of work, and utilize the online automatic washing work to the pipe wall inboard of accomplishing of the pressure of liquid self, whole cleaning component 12 work in inclosed glass container and do not influence the continuous flow of liquid, cleaning component 12 also can not cause the influence to the testing result because of producing the air in the removal in-process, and adopt the cleaning piston 121 of circulation formula surface contact to wash glass inner wall, can not harm glass inner wall, again because the cleaning component 12 jam phenomenon can not appear in the lubrication effect of liquid self, and the pressure is as long as is greater than 0.15Mpa just can normally work.
The foregoing is a preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.
Claims (5)
1. A self-cleaning optical flow cell, comprising:
a quartz glass tube;
end covers arranged at the upper end and the lower end of the quartz glass tube, and concave piston limit washers are arranged at the contact positions of the inner wall of the end cover and the quartz glass tube;
the installation butt joint is welded at the center of the top of the end cover and used for butt joint of an external hose, and a circulation cavity communicated with the end cover is arranged at the center of the installation butt joint;
the blind plate limiting check ring is arranged in the end cover and positioned at the bottom of the circulation cavity, a through hole communicated with the circulation cavity is formed in the inner side wall of the blind plate limiting check ring, and a blind plate limiting moving groove is formed in a drop space between the concave piston limiting gasket and the blind plate limiting check ring;
install the cleaning element in quartz glass tube, cleaning element is including wasing piston, sleeve pipe, removal pipe and blind plate, the blind plate is all installed at the upper and lower both ends of removal pipe, the water conservancy diversion hole has been seted up on the lateral wall of removal pipe upper and lower end and blind plate butt joint department, and the sleeve pipe cup joints in the outside of removal pipe, the removal pipe can reciprocate in the sleeve pipe, washs the piston and fixes in the sheathed tube outside, the outer wall of wasing the piston is hugged closely with quartz glass tube's inner wall and is set up.
2. The self-cleaning optical flow cell of claim 1, wherein: the sleeve, the moving tube and the blind plate are made of metal, the blind plate is welded on the upper end edge and the lower end edge of the moving tube, the moving tube is sleeved in the sleeve, and a moving gap is reserved between the outer wall of the moving tube and the inner wall of the sleeve.
3. The self-cleaning optical flow cell of claim 1, wherein: the blind plate limiting check ring is an annular check ring and comprises an outer check ring and an inner check ring, an open design is arranged between the tops of the outer check ring and the inner check ring, a closed design is arranged between the bottoms of the outer check ring and the inner check ring, and a through hole is formed in the side wall of the inner check ring.
4. The self-cleaning optical flow cell of claim 1, wherein: and the outer side of the end cover is sleeved with a metal protection pipe.
5. The self-cleaning optical flow cell of claim 1, wherein: the device comprises a quartz glass tube, and is characterized by further comprising a first three-way electromagnetic valve, a second three-way electromagnetic valve, a controller, an optical sensor and a light source, wherein the light source and the optical sensor are symmetrically arranged at the left side and the right side of the quartz glass tube, the first three-way electromagnetic valve and the second three-way electromagnetic valve are respectively connected with an installation butt joint welded at the top center of the upper end cover and the lower end cover through pipelines, and the first three-way electromagnetic valve, the second three-way electromagnetic valve, the optical sensor and the light source are electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811057949.XA CN109459389B (en) | 2018-09-11 | 2018-09-11 | Automatic wash optics flow cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811057949.XA CN109459389B (en) | 2018-09-11 | 2018-09-11 | Automatic wash optics flow cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109459389A CN109459389A (en) | 2019-03-12 |
| CN109459389B true CN109459389B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811057949.XA Active CN109459389B (en) | 2018-09-11 | 2018-09-11 | Automatic wash optics flow cell |
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| CN (1) | CN109459389B (en) |
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| CN113953280B (en) * | 2021-10-29 | 2022-10-21 | 智程半导体设备科技(昆山)有限公司 | Quartz glass straight tube cleaning device |
Citations (14)
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| JPH1018277A (en) * | 1996-07-01 | 1998-01-20 | Saburo Ninomiya | Device and method for cleaning underground water collection hole |
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|---|---|
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