CN2230446Y - Multi-function flow injection device - Google Patents
Multi-function flow injection device Download PDFInfo
- Publication number
- CN2230446Y CN2230446Y CN 94241040 CN94241040U CN2230446Y CN 2230446 Y CN2230446 Y CN 2230446Y CN 94241040 CN94241040 CN 94241040 CN 94241040 U CN94241040 U CN 94241040U CN 2230446 Y CN2230446 Y CN 2230446Y
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- CN
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- peristaltic pump
- flow injection
- sampling valve
- rotor
- sampling
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Abstract
The utility model relates to a multi-function flow injection device. The complete machine is only provided with a peristaltic pump and a sampling valve; the roller of the peristaltic pump is provided with a sheath wheel made of a flexible material and with low abrasions; the stator and the rotor of the sampling valve are both multifunctional valves with multiple channels and multiple combinations and form a symmetrical structure; a hydride generating mechanism is arranged. The utility model has the advantages of low abrasion to a pump pipe, constant flow rate, high detecting precision and high work efficiency, and two sampling processes can be completed in one period. A single pump and a single valve can perform related flow injection analysis operations such as sampling, bands merging, online separating, concentrating, diluting, flow stopping, bubbles separating, etc.
Description
The utility model relates to the flow injection instruments in the analytical instrument category, be particularly related to a kind of single pump, single valve just can be finished sampling, merge band, the multi-functional flow injection instruments of the Flow Injection Analysis operation at interval etc. relevant with bubble is arrheaed in ON-LINE SEPARATION, enrichment, dilution.
Flow Injection Analysis (FIA, Flow Injection Analysis) is a kind of emerging analytical approach, its ultimate principle is by the rotation sampling valve, sample solution with certain volume, with " sample plug " form " injection " in the current-carrying of continuous flow, under the condition that strictness control disperses, sample is reacted with reagent mix, after flow cell measure, no matter mix whether whether homogeneous reaction is complete, can both realize high-precision mensuration, be called flow injection analyzer (Flow Injection Analyser) with the instrument of this principle manufacturing.
Flow injection analyzer, can be directly and couplings such as atomic spectroscopic analysis instrument, spectrophotometer, fluorescence analyser and electrochemical analyser, under the prerequisite that does not change the pre-treatment process of former analytical instrument, condition of work and the original analysis precision of maintenance, simplified operation, save sample and improve detection speed, its advantage detected professional is just day by day appreciated.
The critical piece of flow injection analyzer is pump and valve, and peristaltic pump is used to carry liquid, and the effect of sampling valve has sampling, and enrichment merges band and dilution etc.
Commercially available flow of goods injection analyser, because there are some deficiencies in reasons in structure:
1. peristaltic pump is to rely on the continuously extruded pump line of its roller and carry liquid, and roller is the metallic hard wheel usually, and frequent extruding easily makes the pump line wearing and tearing and influences its result of use.
2. though sampling valve also is a multi-channel structure, but it is identical respectively to organize the radial position of passage on disc, and the rotor anglec of rotation of valve is generally 60 °, transfer to when using two passages, four passages must be used on the stator, or when using two passages on the stator, four passages must be used on the rotor, just can finish sampling process one time, thereby function is less.
For remedying this defective, common flow injection analyzer adopts the double pump bivalve more, even three pumps, three valves, can finish above-mentioned all multi-functionally, thereby complex structure, control gear are also complicated, and price is higher.
Goal of the invention of the present utility model is exactly at above-mentioned the deficiencies in the prior art, designs a kind of rational in infrastructure, simplification and multiple functional multi-functional flow injection analyzer.
Inventive concept of the present utility model realizes with following technical proposals:
Develop a kind of mainly by casing, control section, the peristaltic pump part, the multi-functional flow injection instruments that sampling valve part and hydride generating unit are grouped into, the display of control section and instruction input, the roller of peristaltic pump part, fixture block and pump line, the stator of sampling valve part, rotor and sampling pipe, the flowmeter of hydride generation part all reveals to be put outside casing, the drive motor of peristaltic pump and sampling valve, wiring board, the hydride generating mechanism all ladle cover in casing, connect pump line and quantitatively encircle, energized, input instruction, the constant speed micromotor drives peristaltic pump, the extruding pump line, transferring to of another constant speed micromotor driven in synchronism sampling valve by the setting value action, finished sampling, merge band, ON-LINE SEPARATION, enrichment, dilution is arrheaed and relevant Flow Injection Analysis operation such as bubble interval, it is characterized in that:
A. complete machine only disposes a peristaltic pump and a sampling valve,
B. peristaltic pump is the low wearing and tearing peristaltic pump that roller has the outer wheel of soft material,
C. the stator of sampling valve and rotor all are hyperchannel, many combinations, the multifunction valve of symmetrical structure each other,
D. dispose the hydride generating mechanism.
Above-mentioned multi-functional flow injection instruments, it is characterized in that described peristaltic pump is the low wearing and tearing peristaltic pump that roller has the outer wheel of soft material, be meant on the motor driving wheel of peristaltic pump to be connected with a plurality of metal rollers, the metal roller outer rim that contacts with pump line is inlaid with the outer wheel of soft material.
Above-mentioned multi-functional flow injection instruments is characterized in that the stator of described sampling valve and rotor all are hyperchannel, many combinations, the multifunction valve of symmetrical structure each other, are meant:
The stator of sampling valve and rotor all are 12 passages, 16 passages or 20 passages,
In each bar passage, whenever adjacent two is a pair of, and corresponding two pairs is a combination, and each sampling valve is divided into into 3 combinations, 4 combinations or 5 combinations,
In each combination, two pairs of passages symmetry mutually on disc is the center of circle with the axle, and rotor is when center of circle Rotate 180 °, and each passage all overlaps with its corresponding channel position,
There is an anti-leak step at the center of stator.
Above-mentioned multi-functional flow injection instruments is characterized in that the described radial position difference of passage on disc of respectively organizing.
Above-mentioned multi-functional flow injection instruments is characterized in that the described hydride generating mechanism that disposes, and is meant to dispose gas control module and gas-liquid mixed and the separating mechanism that can finish hydride generation work in this instrument.
The technical solution of the utility model than the flow injection analyzer of prior art, has tangible advantage:
1. the metal roller outer rim that contacts with pump line of peristaltic pump is inlaid with the outer wheel of soft material, and the wearing and tearing of pump line reduce greatly, can dependable flow the precision of constant and testing result.
2. the stator of sampling valve and rotor all are hyperchannel, many combinations, the multifunction valve of symmetrical structure each other.Stator is identical with the rotor channel distribution form, but both are symmetrical mutually, and each passage of combination back just interconnects.
In each combination, two pairs of passages symmetry mutually on disc is the center of circle with the axle, and rotor is when center of circle Rotate 180 °, and each passage all overlaps with its corresponding channel position.
Thereby, when the rotor of sampling valve switches at every turn, all be that Rotate 180 ° gets final product.Two sampling ring or minitype gathering post can be installed simultaneously, the two alternating sampling, one-period can be finished double sampling process, high efficiency.
Each organizes the radial position difference of passage on disc, each other can crossfire when guaranteeing to switch.
Single pump, single valve can carry out various Flow Injection Analysis operations, and control gear only needs stopping/changeing of operation valve, and used control gear can be simplified, and needn't termination of pumping also can realize arrheaing operation.
3. the control gear of valve, multi-functional sampling valve rotor is driven by constant speed motor, Rotate 180 ° at regular intervals, every rotation is promptly got back to the origin-location twice, that is finishes one-period.One-period comprises two sections stand-by times and two sections rotational times, and rotational time is identical, and stand-by time can be identical or different, regulates arbitrarily in the scope of design and sets.
For example, use circular form digital circuit program timer, each cycle was divided into for four steps, two steps control rotational time, and two steps control stand-by time, all available knob of each time or keyboard are set easily and are regulated.
4. the hydride generating mechanism is furnished with gas control module and gas-liquid mixed and separating mechanism in the utility model, can finish hydride generation work, and not need to put in addition this annex.
The technical solution of the utility model is the significant improvement of existing flow injection analyzer, is structural renewal product.
Facts have proved that the utility model reaches the goal of the invention of expection satisfactorily.
Below in conjunction with drawings and Examples the utility model is further elaborated:
Fig. 1 is the structural representation of flow injection analyzer;
Fig. 2 is the peristaltic pump roller structure synoptic diagram of flow injection analyzer;
Fig. 3 is the sampling valve structural representation of flow injection analyzer;
Fig. 4 is the sampling valve working state schematic representation of flow injection analyzer;
Fig. 5 is the merging band method view of flow injection analyzer;
Fig. 6 is the volume sample introduction post enrichment state synoptic diagram of flow injection analyzer;
Fig. 7 is the time sample introduction post enrichment state synoptic diagram of flow injection analyzer;
Fig. 8 is the bubble interval reactiveness synoptic diagram of flow injection analyzer;
Fig. 9 is the stop reactiveness synoptic diagram of flow injection analyzer.
Among the figure, the 1st, the driving wheel of peristaltic pump is driven by the constant speed micromotor that is arranged in the casing, and driving wheel is a double-decker, along the evenly distributed a plurality of rollers of periphery, during the driving wheel operation, drives each roller and rotates between two-layer the wheel; The 2nd, fixture block, two one group, inboard arc and the grooves of locating with many confession pump lines, outside rectangular, its inner arc and roller cylindrical coincide, and an end is fixing on backstay, and the other end is regulated with screw; The 3rd, pump line is embedded in the two ends groove of fixture block inner arc, a termination sample source, reagent source etc., and the quantitative ring of another termination sampling valve, enriching column, reactor etc. are the passages that peristaltic pump is carried liquid; The 4th, multi-functional sampling valve, each one of stator a identical by structure, that the position is corresponding and rotor b form, and there is an anti-leak step c at the center of stator, and the top has and compresses the gland 12 that rotor is used; The 5th, flowmeter; The 6th, the numerical value display of control section can be used charactron, liquid crystal display etc.; The 7th, the instruction input of control section can be used button, knob etc.; The 8th, casing; The 9th, power lead; The 10th, the motor shaft of peristaltic pump; The 11st, the driving wheel of peristaltic pump; The 13rd, the metal roller; The 14th, soft outer wheel; The 15th, sampling valve stator and epitrochanterian passage, one end opening are in the matching surface of stator, rotor, and the other end is opened on their side; The 16th, the motor shaft of sampling valve; The 17th, for quantitatively encircling the jack that connects; A, B are different media; C is a current-carrying; CL is a micro-column; D is a detecting device; E is an eluant, eluent; L is quantitative ring; M is a mixed pipe line; P is a peristaltic pump; R is a reactor; R ' is a reagent; S is a sample; V is a multifunction valve; W is a waste liquid.
Applicating example
1. merge band
In existing commercially available flow injection analyzer, merge the band method and generally finish, and available single pump single valve system finishes in the utility model by double pump single valve or single pump dual valve system.
As accompanying drawing 5, L
1' and L
2' in be continuously pumped into two media A that desire merges and B (as two kinds of reactants etc.) respectively, the rotor of multi-functional sampling valve press certain hour interval Rotate 180 °, makes L
1, L
2Respectively with L
1', L
2' transposition, thus make quantitatively ring L of top two
1, L
2(the L before promptly rotating
1', L
2') in medium A and B respectively by current-carrying C
1And C
2Be written into mixed pipe line M to make it merging, rotor merges band and produces in succession once more.
2. the online micro-column of trace constituent separates and enrichment in the complicated substrate
(1) volume sample introduction
As accompanying drawing 6, sample solution S is continuously pumped into quantitative LS
1In, eluant, eluent E is continuously pumped into quantitative LE simultaneously
2In standby, behind the rotor Rotate 180 °, (this moment LS
1Be in LS
2The position), LS
2In sample by current-carrying C
1Be written into CL
2In, tested composition is kept, transfer to once more rotation after, CL
1(the CL before promptly rotating
2) in the measured object that keeps by LE
1In the eluant, eluent wash-out enter reactor R or detecting device D.
LE is set three purposes is arranged:
1. avoid eluant, eluent to be continuously pumped into detecting device and to cause adverse effect;
2. can use suitable current-carrying C
2Earlier with CL
1In remaining matrix flush out, in order to avoid cause interference;
3. as eluant, eluent E (also being reaction reagent sometimes), more valuable or poisonous, can reduce its consumption by this mode.
But if there is no these problems can not established LE
1, LE
2And E is directly pumped into CL
1In.
Said process is finished by single pump single-valve arrangements of the present utility model, and the existing goods instrument must can be finished with complicated mechanisms such as double pump bivalves, and what have can't enter CL at eluant, eluent as the utility model
1Earlier matrix is wherein gone out before.
(2) time sample introduction
As accompanying drawing 7, sample solution directly pumps into micro-column CL
2In, rotor is pressed certain hour Rotate 180 at interval., because sample pumps into constant airspeed, the time that necessarily pumps into is promptly represented certain volume of sample.The reservation of tested composition and wash-out are identical with the volume sampling system.
The existing goods instrument also has only the double pump of employing bivalve mechanism just can finish this process.
3. bubble at interval
As accompanying drawing 8, at first at L
1, L
2In, be continuously pumped into air or other gas (as using pressure gas, can directly feed and needn't pump into) with peristaltic pump, after rotor switches, L
1, L
2In bubble sample among LA, the LB and reagent are segmented in one section pipeline.
The existing goods instrument generally can not inject at interval bubble, and indivedual instruments can inject bubble, and other function is relatively poor.
4. stopped-flow method
As accompanying drawing 9, sample S pumps into quantitative ring LS ', after rotor switches, mix in LS, LM, LR with reagent R ', when potpourri was full of LR, rotor switched, potpourri is in the middle reaction of LR ', Switch Rotor behind the certain hour, and reaction product (be among the LR this moment) is written in the detecting device by R '.
[embodiment] sheet steel casing, size 450 * 240 * 170mm; Peristaltic pump rotating speed 60r/min, driving wheel φ 50mm, several 9 of roller, outer wheel is a nylon hose, Polyvinylchloride pump line, φ 0.2～2mm; Aluminium alloy or nylon fixture block, there are four pump line grooves every fixture block inboard; The multi-functional sampling valve body of teflon processing, four groups, 16 passages are distributed in four radially not on the position, and quantitatively ring, jack all are the teflon materials, the gland stainless steel; Control section is made central controller with 8031 single-chip microcomputers, adopts charactron to make display, and keyboard is made instruction input.
Minimum sample size 10 μ l can set extension rate arbitrarily, and best result is analysed 400 cycles of speed/h.
The pump line wearing and tearing are little, and valve body structure is reasonable and the anti-leak step is arranged, and uses the result satisfied.
Claims (5)
1. one kind mainly by casing, control section, the peristaltic pump part, the multi-functional flow injection instruments that sampling valve part and hydride generating unit are grouped into, the display of control section and instruction input, the roller of peristaltic pump part, fixture block and pump line, the stator of sampling valve part, rotor and quantitative ring, the flowmeter of hydride generation part all reveals to be put outside casing, the drive motor of peristaltic pump and sampling valve, wiring board, the hydride generating mechanism all ladle cover in casing, connect pump line and sampling pipe, energized, input instruction, the constant speed micromotor drives peristaltic pump, the extruding pump line, the rotor of another constant speed micromotor driven in synchronism sampling valve by the setting value action, is finished sampling, merge band, ON-LINE SEPARATION, enrichment, dilution is arrheaed and relevant Flow Injection Analysis operation such as bubble interval, it is characterized in that:
A. complete machine only disposes a peristaltic pump and a sampling valve,
B. peristaltic pump is the low wearing and tearing peristaltic pump that roller has the outer wheel of soft material,
C. the stator of sampling valve and rotor all are hyperchannel, many combinations, the multifunction valve of symmetrical structure each other,
D. dispose the hydride generating mechanism.
2. multi-functional flow injection instruments according to claim 1, it is characterized in that described peristaltic pump is the low wearing and tearing peristaltic pump that roller has the outer wheel of soft material, be meant on the motor driving wheel of peristaltic pump to be connected with a plurality of metal rollers, the metal roller outer rim that contacts with pump line is inlaid with the outer wheel of soft material.
3. multi-functional flow injection instruments according to claim 1 is characterized in that the stator of described sampling valve and rotor all are hyperchannel, many combinations, the multifunction valve of symmetrical structure each other, are meant:
The stator of sampling valve and rotor all are 12 passages, 16 passages or 20 passages,
In each bar passage, whenever adjacent two is a pair of, and corresponding two pairs is a combination, and each sampling valve is divided into into 3 combinations, 4 combinations or 5 combinations,
In each combination, two pairs of passages symmetry mutually on disc is the center of circle with the axle, and rotor is when center of circle Rotate 180 °, and each passage all overlaps with its corresponding channel position,
There is an anti-leak step at the center of stator.
4. multi-functional flow injection instruments according to claim 3 is characterized in that the described radial position difference of passage on disc of respectively organizing.
5. multi-functional flow injection instruments according to claim 1 is characterized in that the described hydride generating mechanism that disposes, and is meant to dispose gas control module and gas-liquid mixed and the separating mechanism that can finish hydride generation work in this instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241040 CN2230446Y (en) | 1994-07-21 | 1994-07-21 | Multi-function flow injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241040 CN2230446Y (en) | 1994-07-21 | 1994-07-21 | Multi-function flow injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2230446Y true CN2230446Y (en) | 1996-07-03 |
Family
ID=33847906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94241040 Expired - Fee Related CN2230446Y (en) | 1994-07-21 | 1994-07-21 | Multi-function flow injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2230446Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130188A3 (en) * | 2011-03-30 | 2012-11-22 | 深圳市麦迪聪医疗电子有限公司 | Flow-type multi-channel biochemical analyzer |
| CN104155422A (en) * | 2014-07-18 | 2014-11-19 | 苏州卫水环保科技有限公司 | Water quality detection pipeline system and method |
| CN117031055A (en) * | 2023-08-25 | 2023-11-10 | 北京宝德仪器有限公司 | Flow analysis system with bubble interval continuous flow and flow injection switchable |
-
1994
- 1994-07-21 CN CN 94241040 patent/CN2230446Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130188A3 (en) * | 2011-03-30 | 2012-11-22 | 深圳市麦迪聪医疗电子有限公司 | Flow-type multi-channel biochemical analyzer |
| CN104155422A (en) * | 2014-07-18 | 2014-11-19 | 苏州卫水环保科技有限公司 | Water quality detection pipeline system and method |
| CN117031055A (en) * | 2023-08-25 | 2023-11-10 | 北京宝德仪器有限公司 | Flow analysis system with bubble interval continuous flow and flow injection switchable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |