CN201529418U - Membrane type solid-phase extraction apparatus - Google Patents
Membrane type solid-phase extraction apparatus Download PDFInfo
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- CN201529418U CN201529418U CN2009202377524U CN200920237752U CN201529418U CN 201529418 U CN201529418 U CN 201529418U CN 2009202377524 U CN2009202377524 U CN 2009202377524U CN 200920237752 U CN200920237752 U CN 200920237752U CN 201529418 U CN201529418 U CN 201529418U
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Abstract
The utility model discloses a membrane type solid-phase extraction apparatus which comprises a solid-phase extraction membrane automatic replacing device, wherein the solid-phase extraction membrane automatic replacing device is composed of a turnplate, and a driver and a membrane replacement controller which are arranged on the turnplate, the membrane replacement controller can send out rotating signals to the driver, and the driver receives signals and drives the turnplate to move. The membrane type solid-phase extraction apparatus has the advantages of high automation and high efficiency.
Description
Technical field
The utility model relates to the chemical analysis instrument field, relates in particular to a kind of diaphragm-type solid phase extraction apparatus.
Background technology
Often contain poisonous and harmful substance in surface water, underground water, running water and the waste water; residual etc. as polycyclic aromatic hydrocarbon, Polychlorinated biphenyls, environmental hormone, organic agricultural chemicals; therefrom extract these harmful substances; and then analyze, measure; but the reference data of drawing has great significance to the mankind's life, environmental protection.
Because in the water sample that obtains, particularly the content of toxic organics is very low in the running water water sample, therefore usually need the water sample of hundreds of milliliter even 1-2 liter is extracted.Existing water sample pre-treating method has two kinds of liquid-liquid extraction method and solid phase extractions.Wherein, liquid-liquid extraction method will consume a large amount of organic solvents, have cost height, labour intensity big, be unfavorable for the shortcoming of environmental protection, and be difficult to realize automation, extraction efficiency is low.Therefore, liquid-liquid extraction method is progressively replaced by SPE.Solid phase extraction divides solid-phase extraction column and SPE diaphragm again according to the difference of extraction equipment.Wherein, solid-phase extraction column often needs to spend 1-2 hour, inefficiency because column section is long-pending less when 1 liter water sample is carried out pre-treatment.And the surface area of SPE diaphragm is more than 100 times of solid-phase extraction column, to processing time of 1 liter water sample only be 15-20 minute.And consumption of organic solvent is less relatively, can realize automation.
At present, automatic diaphragm-type solid phase extraction apparatus has appearred on the market, though this solid-phase extracting instrument has been realized the automation of SPE process,, this kind instrument can only be handled a sample at every turn, simultaneously, must manually change SPE diaphragm and receiving flask, therefore, automaticity is low, in the face of each laboratory each tens even up to a hundred samples to be processed, the efficient of this kind solid-phase extracting instrument automaticity is still very low.
The utility model content
At above-mentioned defective, the technical problem that the utility model solves is, a kind of diaphragm-type solid phase extraction apparatus is provided, and can handle automaticity height, efficient height simultaneously to a plurality of samples.
In order to solve above technical problem, the diaphragm-type solid phase extraction apparatus that the utility model provides, comprise SPE diaphragm apparatus for automatic change, described SPE diaphragm apparatus for automatic change comprises rotating disk and is arranged on more changer controller of driver on the rotating disk, diaphragm, described diaphragm more changer controller sends turn signal to driver, the driver received signal drives the rotating disk action.
In the technical program, one rotating disk is set, be used for placing, arranging a plurality of extraction containers, and driver is set on rotating disk, make it to rotate by the turn signal of changer controller more, thereby the extraction container on the rotating disk is rotated, make extraction container forward the operating position to, carry out extraction work, realize the automatic replacing of diaphragm with this.
Preferably, described driver is a stepper motor.
Preferably, also comprise various product automatic release device, described various product automatic release device comprises:
The sample containing part comprises several shuttles;
Extraction portion comprises several extraction containers, and the extraction diaphragm is set in the described extraction container;
Closed and the sealing with described extraction container by phased manner of vacuum chamber, described vacuum chamber;
Sample is thrown in controller, the closure that is used to control the connecting and disconnecting of sample containing part and extraction portion and extraction portion and vacuum chamber with separate;
The liquid level inductor obtains the liquid level signal in the extraction container, and is sent to sample input controller.
In the technical program, the sample containing part that comprises a plurality of shuttles is set, insert different samples in each shuttle.During sample introduction, sample is thrown in controller and is sent closure signal earlier, vacuum chamber and extraction container closure, sample is thrown in controller and is sent the sample introduction signal again, shuttle optionally is communicated with extraction container in the extraction portion, and with orderly the sending in the corresponding extraction container of sample, the liquid level inductor then obtains the liquid level that flows into sample in the extraction container, send liquid level signal to sample and throw in controller, throw in controller by sample and send the signal that continues or stop sample introduction.The sample that enters extraction container enters vacuum chamber by the extraction diaphragm under the effect of negative pressure of vacuum.After finishing a kind of throwing sample and wash-out of sample, the input that promptly enters next sample.
Preferably, described shuttle is respectively equipped with corresponding sample magnetic valve, and the inlet of described sample magnetic valve connects shuttle, and outlet connects a sample and throws in pipe.
Preferably, described liquid level inductor is contactless liquid level inductive probe.
Preferably, described liquid level inductor is ultrasonic wave liquid level inductive probe or infrared liquid level inductive probe.
Preferably, also comprise automatic wash-out device, described automatic wash-out device comprises the solvent containing part that is provided with some solvent containers, the eluent collection unit that is provided with some eluent collection containers, wash-out controller, described solvent containing part is communicated with, disconnects with described extraction portion by the wash-out controller, and described eluent collection unit is passed through the wash-out controller and is communicated with described vacuum chamber or disconnects.
Preferably, described eluent collection container is provided with corresponding vacuum valve, described vacuum valve by a fraction collection selector valve, the stream selector valve is communicated with described vacuum chamber or disconnect.
Preferably, described solvent container is provided with the corresponding solvent valve, and described solvent valve is communicated with extraction container by a solvent selector valve or disconnects.
Preferably, described sample bottle also is provided with corresponding wash bottle solvent valve, and described wash bottle solvent valve inlet links to each other with described solvent selector valve, and outlet links to each other with a described shuttle and a solvent flush valve respectively.
The diaphragm-type solid phase extraction apparatus that the utility model provides, compared with prior art, this abstraction instrument is provided with SPE diaphragm apparatus for automatic change, make in the extraction process, the extraction diaphragm can be changed automatically, thereby realize a plurality of samples are handled automatically in order, save the pre-treatment time in the sample analysis, raise the efficiency.
As preferred embodiment, diaphragm-type solid phase extraction apparatus of the present utility model also is provided with various product automatic release device, after a certain sample extraction is finished, cut next sample automatically, next sample is proceeded to handle, further improve the automaticity of abstraction instrument, raise the efficiency.
As preferred embodiment, diaphragm-type solid phase extraction apparatus of the present utility model also is provided with automatic wash-out device, realizes the wash-out that various product are automatic, orderly, thereby realizes the full automation of whole sample extraction processing procedure, raises the efficiency greatly.
Description of drawings
Fig. 1 is the structural representation of the utility model diaphragm-type solid phase extraction apparatus one preferred embodiment;
Fig. 2 is the structure chart of solid phase diaphragm apparatus for automatic change among Fig. 1.
The specific embodiment
For those skilled in the art can understand technical scheme provided by the utility model better, set forth below in conjunction with specific embodiment.
The structural representation of diaphragm-type abstraction instrument of the present utility model comprises referring to Fig. 1:
One, various product automatic release device, described various product automatic release device comprises:
The sample containing part comprises 8 sample bottles 1, is placed with water sample in the sample bottle 1, and each sample bottle is provided with corresponding sample magnetic valve 2, and the inlet of sample magnetic valve 2 connects sample bottle 1, and outlet connects sample and throws in pipe 3.
Extraction portion comprises 8 extraction dish 4, is provided with the extraction diaphragm in the extraction dish;
Sample is thrown in the controller (not shown), the closure that is used to control the connecting and disconnecting of sample containing part and extraction portion and extraction portion and vacuum chamber with separate;
Two, SPE diaphragm apparatus for automatic change, described SPE diaphragm apparatus for automatic change comprises rotating disk 7 and is arranged on more changer controller (not shown) of driver 8 on the rotating disk, diaphragm, this diaphragm more changer controller sends turn signal to driver 8, driver 8 begins to rotate after receiving turn signal, drive rotating disk 7 actions simultaneously, rotating certain angle.Extraction dish 4 is set on the rotating disk 7, thereby makes extraction dish 4 also rotate thereupon, turn to the operating position, carry out extraction work.Select in the present embodiment to rotate accurate stepper motor as driver.The structure chart of SPE diaphragm apparatus for automatic change is referring to Fig. 2.
Three, automatic wash-out device, described automatic wash-out device comprises solvent containing part, eluent collection unit, wash-out controller (not shown), described eluent collection unit is communicated with, disconnects with described vacuum chamber 5 by the wash-out controller, and described solvent containing part passes through the wash-out controller and is communicated with described extraction portion or disconnects.
Wherein, the solvent containing part comprises 6 solvent bottles 9, and each solvent bottle is provided with corresponding solvent valve 10, and described solvent valve 10 is communicated with the extraction dish by a solvent selector valve 11 or disconnects.Described sample bottle also is provided with corresponding wash bottle solvent valve 12, and described wash bottle solvent valve 12 inlets link to each other with described solvent selector valve 11, and outlet links to each other with a described sample bottle 1 and a solvent flush valve 13 respectively.
Wherein, the eluent collection unit is provided with 8 eluent receiving flasks 14, is used to collect the eluent of every kind of sample.Each eluent receiving flask 14 all is provided with corresponding vacuum valve 15, this vacuum valve 15 by a fraction collection selector valve 16, stream selector valve 17 is communicated with described vacuum chamber 5 or disconnect.
The abstraction instrument of present embodiment, its sample is thrown in the course of work and is summarized as follows:
At first, sample is thrown in controller and is sent closure signal, and vacuum chamber 5 rises under the effect of power, combines with extraction dish 4 sealings that are in the operating position.Designated samples magnetic valve 2 is opened under the control of sample input controller, only opens in 8 sample magnetic valves at every turn, and the water sample in the designated samples bottle 1 flows into the extraction dish 4 that is in the operating position by designated samples magnetic valve 2 and connecting line.When the water sample inflow is in the extraction dish 4 of operating position, liquid level inductor 6 is monitored the water level of water samples in the sample extraction dish 4 that is in the operating position continuously or discontinuously, when the water sample liquid level arrives the appointment water level, liquid level inductor 6 sends signal to sample and throws in controller, sample is thrown in controller and is sent closure signal to designated samples magnetic valve 2, at this moment, designated samples closed electromagnetic valve.Simultaneously, the vavuum pump (not shown) that vacuum chamber 5 connects starts, water sample under the effect of negative pressure of vacuum by the extraction diaphragm in the extraction dish 4 that is in the operating position.When sample liquid level in the sample extraction dish 4 is lower than the appointment water level, sample magnetic valve 2 is opened, water sample in the sample bottle 1 continues to flow in the extraction dish 4 that is in the operating position, and by the SPE diaphragm, so constantly repeat, all samples in designated samples bottle 1 is by operating position extraction dish 4.After finishing all required movements, sample is thrown in controller and is sent separation signal, and vacuum chamber 5 moves down, and separates with the extraction dish 4 that is in the operating position.Behind all working of finishing a sample, the SPE diaphragm is changed device and is changed new sample extraction dish over to operating position automatically automatically, and next sample repeats above-mentioned action, till all samples all disposes.
The abstraction instrument of present embodiment, its diaphragm is changed the course of work automatically and is summarized as follows:
When carrying out the extraction work of next sample, vacuum chamber 5 moves down, and separates with last operating position extraction dish 4, and rotating disk 7 turns to the operating position with new extraction dish 4, vacuum chamber 5 moves up, with lower seal, the closure of the extraction dish 4 that is in the operating position.Under liquid the effect in negative pressure of vacuum of extraction in the dish 4 by the SPE diaphragm, after entering vacuum chamber 5, stream selector valve 17 switches stream according to designated program, and filtrate is by specifying stream to flow into organic liquid waste collection container (not shown) or inorganic waste liquids collection container (not shown) or eluent receiving flask 14.After finishing all extraction procedures of a sample, vacuum chamber 5 separates with the extraction dish 4 that is in the operating position downwards, and driver is that stepper motor rotates 1/8 circle, and rotating disk 7 turns to the operating position with new extraction dish 4, continues the extraction of next sample.Circulation so repeatedly is until the extraction process of finishing 8 samples.
The abstraction instrument of present embodiment, its automatic wash-out course of work is summarized as follows:
8 eluent receiving flasks, 14 corresponding 8 samples among Fig. 1.Be that poisonous and harmful compound in each sample is collected in the corresponding eluent receiving flask 14.When instrument proceeded to wash-out work, fraction collection selector valve 16 switched to assigned address, and the eluent receiving flask 14 that the liquid road is connected with this position connects.Simultaneously, the vacuum valve 15 corresponding with this eluent receiving flask 14 opened, 8 vacuum valves, only open 1 at every turn, make this partial vacuum degree increase, under the effect of negative pressure of vacuum, eluent is through the SPE diaphragm in the extraction dish 4, to be come out by the poisonous and harmful substance wash-out that the SPE diaphragm adsorbs, and flow into eluent receiving flask 14 with eluent.When carrying out the SPE of next sample, fraction collection selector valve 16 automatically switches to next position, and corresponding vacuum valve 15 is opened, and carries out the wash-out and the collection of next sample.So circulation is carried out, until the SPE of finishing all samples.
The diaphragm-type solid phase extraction apparatus that present embodiment provides realizes that automation, diaphragm are changed the realization automation, the sample wash-out is realized automation because sample is thrown in, and has therefore realized whole automations of whole extraction process, raises the efficiency greatly.
Certainly; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. diaphragm-type solid phase extraction apparatus, it is characterized in that, comprise SPE diaphragm apparatus for automatic change, described SPE diaphragm apparatus for automatic change comprises rotating disk and is arranged on more changer controller of driver on the rotating disk, diaphragm, described diaphragm more changer controller sends turn signal to described driver, and described driver received signal also drives the rotating disk action.
2. diaphragm-type solid phase extraction apparatus according to claim 1 is characterized in that, described driver is a stepper motor.
3. diaphragm-type solid phase extraction apparatus according to claim 1 is characterized in that, also comprises various product automatic release device, and described various product automatic release device comprises:
The sample containing part comprises several shuttles;
Extraction portion comprises several extraction containers, and the extraction diaphragm is set in the described extraction container;
Closed and the sealing with described extraction container by phased manner of vacuum chamber, described vacuum chamber;
Sample is thrown in controller, the closure of the connecting and disconnecting of control sample containing part and extraction portion and extraction portion and vacuum chamber with separate;
The liquid level inductor obtains the liquid level signal in the extraction container, and is sent to sample input controller.
4. diaphragm-type solid phase extraction apparatus according to claim 3 is characterized in that, described shuttle is respectively equipped with corresponding sample magnetic valve, and the inlet of described sample magnetic valve connects shuttle, and outlet connects a sample and throws in pipe.
5. diaphragm-type solid phase extraction apparatus according to claim 3 is characterized in that, described liquid level inductor is contactless liquid level inductive probe.
6. diaphragm-type solid phase extraction apparatus according to claim 5 is characterized in that, described liquid level inductor is ultrasonic wave liquid level inductive probe or infrared liquid level inductive probe.
7. diaphragm-type solid phase extraction apparatus according to claim 3, it is characterized in that, also comprise automatic wash-out device, described automatic wash-out device comprises the solvent containing part that is provided with some solvent containers, the eluent collection unit that is provided with some eluent collection containers, wash-out controller, described solvent containing part is communicated with, disconnects with described extraction portion by the wash-out controller, and described eluent collection unit is passed through the wash-out controller and is communicated with described vacuum chamber or disconnects.
8. diaphragm-type solid phase extraction apparatus according to claim 7 is characterized in that, described eluent collection container is provided with corresponding vacuum valve, described vacuum valve by a fraction collection selector valve, the stream selector valve is communicated with described vacuum chamber or disconnect.
9. diaphragm-type solid phase extraction apparatus according to claim 7 is characterized in that described solvent container is provided with the corresponding solvent valve, and described solvent valve is communicated with extraction container by a solvent selector valve or disconnects.
10. diaphragm-type solid phase extraction apparatus according to claim 9, it is characterized in that, described sample bottle also is provided with corresponding wash bottle solvent valve, and described wash bottle solvent valve inlet links to each other with described solvent selector valve, and outlet links to each other with a described shuttle and a solvent flush valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377524U CN201529418U (en) | 2009-10-23 | 2009-10-23 | Membrane type solid-phase extraction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377524U CN201529418U (en) | 2009-10-23 | 2009-10-23 | Membrane type solid-phase extraction apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN201529418U true CN201529418U (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202377524U Expired - Lifetime CN201529418U (en) | 2009-10-23 | 2009-10-23 | Membrane type solid-phase extraction apparatus |
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| CN (1) | CN201529418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695612B (en) * | 2009-10-23 | 2012-12-12 | 陈小波 | Diaphragm-type solid phase extraction apparatus |
-
2009
- 2009-10-23 CN CN2009202377524U patent/CN201529418U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695612B (en) * | 2009-10-23 | 2012-12-12 | 陈小波 | Diaphragm-type solid phase extraction apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20091023 |
|
| RGAV | Abandon patent right to avoid regrant |