CN101825642B - Metering device of automatic analysis meter - Google Patents
Metering device of automatic analysis meter Download PDFInfo
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- CN101825642B CN101825642B CN 201010176350 CN201010176350A CN101825642B CN 101825642 B CN101825642 B CN 101825642B CN 201010176350 CN201010176350 CN 201010176350 CN 201010176350 A CN201010176350 A CN 201010176350A CN 101825642 B CN101825642 B CN 101825642B
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Abstract
The invention relates to a metering device of an automatic analysis meter, which belongs to the technical field of automatic analysis metering. The device comprises a liquid flow driver, a first control valve and a second control valve, wherein liquid flow storage and transportation passages are connected between the two control valves, the number of respective paths of the two control valves is greater than or equal to the number of the liquid flow storage and transportation passages, ports at one side of the first control valve paths are externally connected with test specimens or devices through pipelines, ports at the other side of the first control valve paths are communicated with ports at one side of the liquid flow storage and transportation passages through first public passages, ports at the other side of the liquid flow storage and transportation passages are respectively and correspondingly connected with ports at one side of the second control valve paths, ports at the other side of the second control valve paths are connected with the liquid flow driver, and the volume of the liquid flow storage and transportation passages and the fist public passages is a fixed value matched with the specimen metering volume. Because the volume of the liquid flow storage and transportation passages and the fist public passages can be precisely processed into various fixed values according to the metering volume of various test specimens, the device of the invention can complete the precise, stable and efficient metering on various test specimens.
Description
Technical field
The present invention relates to be used in a kind of automatic analyzer the device of meters reagents, belong to automatic analysis metering technical field.
Background technology
In Environmental Technology field such as automatic water quality monitoring, all will use automatic analyzer, and automatic analyzer is typically equipped with the device that the liquor sample (comprise reagent and treat sample measuring liquid) that gathers is measured.
The syringes that adopt for general quantitative sample in the existing automatic analyzer more, peristaltic pump, the liquid such as volume pump stream driver measures.This metering method is used dumb, is not suitable for the large proportion specimen of accurate measurement micro sample or trace, and has the long-term unsettled defective of metering of using.
In order to improve measuring accuracy, the inventor in first to file publication number be the Chinese patent " automatic chemical analyzer " of CN201141864.This analyser adopts peristaltic pump collection and metering sample to have the defectives such as precision is not high, rapid wear for tradition, has designed a kind of optoelectronic induction measuring apparatus based on volume ratio of novelty.But the applicant finds that when using this analyser this analyser can not measure large proportioning micro sample (being that reagent volume accounts for the reagent situation less with the ratio of the mixed liquor cumulative volume for the treatment of sample measuring liquid).For this reason, the inventor again in first to file the patent No. be the Chinese patent " water quality automatic analyzer dedicated metering device " of ZL200920037706.X, this dedicated metering device can solve the measurement problem of large proportioning micro liquid to a certain extent.But still there is following defective in this dedicated metering device: although 1 can the accurate-metering micro sample by sampling pipe, but the last mixed liquor that also need remove to measure by the optoelectronic induction measuring apparatus sample, and existing optoelectronic induction metering method exists: when running into dirtier liquor sample, dirt is attached to easily the gauge line tube wall and causes the photoelectric sensor mistake to survey (1); There is air when (2) negative pressure of liquor sample by the liquid such as peristaltic pump stream drive unit is drawn in the gauge line, can cause liquid level unstable, thereby affect measuring accuracy, if adopt in liquid level and reduce the rotating speed of peristaltic pump to allow liquid level slowly move to the photoelectric sensor position during near photoelectric sensor, can improve measuring accuracy although do like this, but certainly will greatly lengthen the time to the reagent metering, thereby reduce the work efficiency of whole automatic analyzer.2, helpless for the metering that more than three kinds between the sample all is different large proportioning trace.
To sum up, the measuring apparatus in the existing automatic analyzer can only be carried out the single quantitatively metering of (general quantitative or micro-), single kind and single proportion specimen, can not realize the metering of various (kind, quantitative and proportioning) sample; Even for the metering of A single sample have also that precision is low, poor stability, inefficient defective; And can't measure multiple large proportioning micro sample.
Summary of the invention
The technical matters that the present invention solves is: for the defective that above-mentioned existing automatic analyzer meters reagents device exists, proposes a kind of can be accurately, stablize, the device of efficiency metering various (kind, quantitative and proportioning) sample.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of metering device of automatic analysis meter comprises liquid stream driver, the first operation valve and the second operation valve; Be connected with liquid stream accumulating passage between described the first operation valve and the second operation valve, the quantity of the separately path of described the first operation valve and the second operation valve all flows the quantity of accumulating passage more than or equal to described liquid; Path one side ports of described the first operation valve is respectively by the external sample of pipeline or utensil, and the path opposite side port of described the first operation valve is communicated with by the side ports of the first public passage with liquid stream accumulating passage; The opposite side port of described liquid stream accumulating passage respectively with the corresponding connection of path one side ports of the second operation valve, the path opposite side port of described the second operation valve flows driver by pipeline and liquid and is connected; The volume of described liquid stream accumulating passage and the first public passage is the definite value that the metered volume with described sample is complementary.
Metering device of automatic analysis meter of the present invention has designed liquid stream accumulating passage and the first public passage that is connected between two operation valves, and the volume of design liquid stream accumulating passage and the first public passage is the definite value that is complementary from the metered volume of sample (by designing different liquid stream accumulating passage lengths or internal diameter to adapt to the metered volume of various sample, being equivalent to liquid is flowed the accumulating passage by the metered volume of the various sample coupling of standardizing).So in use, primer fluid stream driver forward work (or starting a liquid stream driver), the sample that is sucked can be successively by and remain in the liquid stream accumulating passage, then primer fluid flows driver reverse operation (or starting another liquid stream driver), the raffinate that liquid flows in the driver is discharged through the second operation valve (or the vacant liquid of process flows the accumulating passage from the first public passage or the first operation valve), restart liquid stream driver reverse operation (or restarting another liquid stream driver), the sample that will remain in successively in the liquid stream accumulating passage is delivered to the mixing reactor from the first public passage or the first operation valve.Because the volume of liquid stream accumulating passage can accurately be processed into various definite value specifications according to the metered volume of various quantitatively (from greatly quantitatively to trace) and various proportioning (from little proportioning to large proportioning) sample, the volume of the first public passage then can be processed into a kind of definite value specification simultaneously, and therefore metering device of automatic analysis meter of the present invention should be finished accurate, the stable and efficiently metering to various types of, various quantitative and various proportioning reagent.And, when the number of passages of the quantity of the number of passages of the first operation valve, liquid stream accumulating passage and the second operation valve all is two when above, can finish the accurate measurement to multiple types, multiple quantitative and multiple proportion specimen.
One of improvement of the technical scheme is: described liquid stream accumulating passage is the interior conduit of delivery pipe.
Two of improvement of the technical scheme is: described liquid stream accumulating passage is the through hole that runs through whole transfer block.
Improvement of the technical scheme two one of perfect be: described transfer block is rectangular parallelepiped, and described flow passage is the through hole of making along transfer block cross section parallel interval.
Improvement of the technical scheme two perfect two be: described transfer block is right cylinder, and described flow passage is the through hole that distributes and make along the transfer block cross-sectional periphery.
One of refinement of technique scheme is: described the first operation valve and the second operation valve are respectively to overlay each other the first selector valve and the second selector valve that consists of by stator and moving plate, are shaped with conduit on the described stator, are shaped with notch on the described moving plate; When moving plate rotated, described notch was communicated with the other end of one of conduit respectively.
Two of the refinement of technique scheme is: the first single-pass solenoid valve group and the second single-pass solenoid valve group that described the first operation valve and the second operation valve are comprised of the single-pass solenoid valve respectively.
Three of the refinement of technique scheme is: described the first operation valve and the second operation valve are respectively the first multidigit two-way electromagnetic valve and the second multidigit two-way electromagnetic valve.
One of variation of one of refinement of technique scheme is: described the first operation valve and the second operation valve are respectively to overlay each other the first selector valve and the second selector valve that consists of by stator and moving plate, described the first selector valve and the second selector valve are placed in respectively the two ends of transfer block, the stator of described the first selector valve and the second selector valve is integrated with the two ends of transfer block respectively, the path of described the first selector valve and the second selector valve is formed on respectively on the both ends of the surface and two ends side face of transfer block, described the first public passage is formed on the transfer block end face at the first selector valve place, and described conduit is formed on the both ends of the surface of transfer block.
Two of the variation of one of refinement of technique scheme is: the interface channel between one of path of described the second selector valve and the liquid stream driver is provided with volume pump.
Two variation of the refinement of technique scheme is: described liquid stream driver is one, and described the second single-pass solenoid valve group is by the second public passage connecting fluid stream driver.
The perfect of technique scheme is: the interface channel between described the second operation valve and the liquid stream driver is provided with the liquid current sensor, and described liquid stream driver is peristaltic pump.
Description of drawings
Below in conjunction with accompanying drawing metering device of automatic analysis meter of the present invention is described further.
Fig. 1 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention one.
Fig. 2 is the structural representation of stator after selector valve decomposes among Fig. 1.
Fig. 3 is the structural representation of moving plate after selector valve decomposes among Fig. 1.
Fig. 4 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention two.
Fig. 5 is one of section of structure of transfer block in the metering device of automatic analysis meter of the embodiment of the invention three.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the right view of Fig. 5.
Fig. 8 be transfer block in the metering device of automatic analysis meter of the embodiment of the invention two section of structure two.
Fig. 9 is the left view of Fig. 8.
Figure 10 is the right view of Fig. 8.
Figure 10 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention three.
Figure 11 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention four.
Figure 12 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention five.
Figure 13 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention six.
Figure 14 is the left view of transfer block among Figure 13.
Figure 15 is the right view of transfer block among Figure 13.
Figure 16 be among Figure 15 A-A to sectional view.
Figure 17 is the structural representation of the metering device of automatic analysis meter of the embodiment of the invention seven.
Embodiment
Embodiment one
The metering device of automatic analysis meter of present embodiment comprises liquid stream driver, the first operation valve and the second operation valve two operation valves as shown in Figure 1; Liquid stream driver adopts a peristaltic pump A, and operation valve adopts selector valve, i.e. the first selector valve F1 and the second selector valve F2.Be connected with liquid stream accumulating passage between the first selector valve F1 and the second selector valve F2, liquid stream accumulating passage is the interior conduit of seven delivery pipe L1, L2, L3, L4, L5, L6, L7, and delivery pipe can adopt flexible pipe or hard tube.
As shown in Figures 2 and 3, two selector valve F1, F2 are overlayed by stator D1 and moving plate D2 to consist of each other, are shaped with conduit C1 at stator D1, are shaped with a notch C2 in the center of moving plate D2; When moving plate rotated, notch C2 was communicated with one of conduit C1 respectively.Structure about selector valve can be the Chinese patent " automatic chemical analyzer " of CN201141864 referring to aforementioned publication number.
The first selector valve F1 and the second selector valve F2 have respectively nine paths.Among the first selector valve F1 the side ports of seven path K1, K2, K3, K4, K5, K6, K7 respectively by pipeline and seven kinds of samples (comprise six kinds of reagent 1,2,3,4,5,6 be connected sample liquid 7) be connected, the proportioning between seven kinds of samples is all different; The side ports of the 8th path K8 is used for external mixing reactor B among the first selector valve F1, the 9th path K9 is connected with the first public passage J as the first HW highway among the first selector valve F1, the opposite side port of eight path K1, K2, K3, K4, K5, K6, K7, K8 is selected to be communicated with the first HW highway K9 by moving plate D2 notch C2 respectively among the first selector valve F1, passes through the first public passage J again and is communicated with the side ports of seven delivery pipe L1, L2, L3, L4, L5, L6, L7.Among the second selector valve F2 the side ports of seven path K10, K11, K12, K13, K14, K15, K16 respectively with the corresponding connection of opposite side port of seven delivery pipe L1, L2, L3, L4, L5, L6, L7, the side ports of the 8th path K17 of the second selector valve F2 is the dead end mouth
(can be used for connecting waste fluid container to discharge interface channel between the second selector valve F2 and the peristaltic pump A and the raffinate among the peristaltic pump A), the 9th path K18 is the second HW highway among the second selector valve F2, and the opposite side port of eight path K10, K11, K12, K13, K14, K15, K16, K17 is selected to be connected with peristaltic pump A by pipeline with the opposite side port of the second HW highway K18 connection by the second HW highway K18 by moving plate D2 notch C2 respectively among the second selector valve F2.Nine number of passages of the first selector valve F1 and the second selector valve F2 are all greater than the quantity of seven delivery pipe L1, L2, L3, L4, L5, L6, L7.The quantity of seven delivery pipes equals the quantity of seven samples.The volume of seven delivery pipe L1, L2, L3, L4, L5, L6, L7 and the first public passage J is the definite value that the metered volume with seven samples is complementary.
On the interface channel between the second selector valve F2 and the peristaltic pump A, also be provided with liquid current sensor E (for detection of there being no liquid to flow through).
As shown in Figure 1, the concrete operating position of the metering device of automatic analysis meter of present embodiment is as follows: begin when a measuring period, the moving plate of the first selector valve F1 rotates to path K1 position, the moving plate of the second selector valve F2 rotates to path K10 position, peristaltic pump A begins forward, reagent 1 flows to path K10 through path K1 and the first public passage J via delivery pipe L1, and drains through liquid current sensor E and peristaltic pump A, and this moment, reagent 1 was stored in the interior conduit of delivery pipe L1.Then the moving plate of the first selector valve F1 rotates to path K2 position, the moving plate of the second selector valve F2 rotates to path K11 position, peristaltic pump A still keeps forward, reagent 2 flows to path K11 through path K2 and the first public passage J via delivery pipe L2, and drain through liquid current sensor E and peristaltic pump A, this moment, reagent 2 was stored in the interior conduit of delivery pipe L2.So circulation is until seven kinds of samples are stored in respectively in the interior conduit of seven delivery pipe L1, L2, L3, L4, L5, L6, L7.Then the moving plate of the first selector valve F1 rotates to path K8 position, the moving plate of the second selector valve F2 rotates to path K17 position, peristaltic pump A counter-rotating, the unnecessary liquid that remains among liquid current sensor E and the peristaltic pump A is drained by the path K17 dead end mouth of the second selector valve F2.Then the moving plate of the second selector valve F2 rotates to path K10 position, and peristaltic pump A counter-rotating drains into the path K8 of the reagent 1 in the interior conduit that is stored in delivery pipe L1 through the first public passage J and the first selector valve F1 among the mixing reactor B; It is motionless to keep the moving plate of the first selector valve F1 to be parked in the K8 position, the moving plate of the second selector valve F2 is rotated to the K11 position, peristaltic pump A counter-rotating drains into the path K8 of the reagent 2 in the interior conduit that is stored in delivery pipe L2 through the first public passage J and the first selector valve F1 among the mixing reactor B; So repeatedly, until seven kinds of samples in the interior conduit that is stored in seven delivery pipe L1, L2, L3, L4, L5, L6, L7 are all drained among the mixing reactor B.Proportioning in mixing reactor B between seven kinds of samples is L1: L2: L3: L4: L5: L6: L7.When seven kinds of samples react end in reactor B after, it is motionless to keep the moving plate of the first selector valve F1 to be parked in path K8 position, the moving plate of the second selector valve F2 is rotated to any one position of path K10～K16, open stop valve G, peristaltic pump A counter-rotating, the mixed reaction solution of sample among the response measurement device B is discharged, and so far, finish a measuring period.
From the above, the metering device of automatic analysis meter of present embodiment measures each reagent fast and easy, reagent type and delivery pipe are easy to flexible increase and decrease, each reagent dosage can be selected arbitrarily, proportioning between reagent only depends on length and the bore of delivery pipe, so the accuracy of meters reagents can improve greatly.
Embodiment two
The metering device of automatic analysis meter of present embodiment is the conversion on embodiment one basis, as shown in Figure 4, difference is except identical with embodiment one: the proportioning between seven kinds of samples has identical, actual different proportionings only have four kinds (to be L1: L2: L3: L4), therefore delivery pipe needs only four (being L1, L2, L3, L4), and the path that corresponding the second selector valve F2 is connected with delivery pipe is four as long as (being K10, K11, K12, K13).When metering, the sample of identical proportioning can be reused same delivery pipe, reagent 1,2,3 identical with delivery pipe L1 with proportioning and metered volume with sample liquid 7 for example then can be reused respectively meters reagents 1,2,3 and sample liquid 7 these four kinds of samples of delivery pipe L1.Concrete metering process and embodiment one roughly the same do not repeat them here.
Embodiment three
The metering device of automatic analysis meter of present embodiment is the conversion on embodiment one basis, and difference is except identical with embodiment one: replace seven delivery pipes by transfer block SK, liquid stream accumulating passage is seven through holes that run through whole transfer block SK.
The first structure of transfer block SK such as Fig. 5, Fig. 6 and shown in Figure 7, transfer block SK is rectangular parallelepiped, be shaped with seven manhole L1 ', L2 ', L3 ', L4 ', L5 ', L6 ', L7 ' in the interval highly from top to bottom along it in transfer block SK, the first public passage J is arranged on the side end face of transfer block SK.
The second structure of transfer block SK such as Fig. 8, Fig. 9 and shown in Figure 10, transfer block SK is right cylinder, in transfer block SK, be shaped with seven manhole L1 along its circumferential section ", L2 ", L3 ", L4 ", L5 ", L6 ", L7 ", the first public passage J is arranged on the side end face of transfer block SK.
Embodiment four
The metering device of automatic analysis meter of present embodiment as shown in figure 11, be the conversion on embodiment one basis, difference is except identical with embodiment one: the first single-pass solenoid valve group F3 and the second single-pass solenoid valve group F4 that (1) two operation valve is comprised of the identical single-pass solenoid valve of quantity respectively.Four samples (three reagent 1,2,3 and sample liquid 4) are arranged, four delivery pipe L1, L2, L3, L4 should be arranged mutually, and the first single-pass solenoid valve group F3 and the second single-pass solenoid valve group F4 respectively have five single-pass solenoid valve f1, f2, f3, f4, f5 and f6, f7, f8, f9, f10; (2) second single-pass solenoid valve groups connect peristaltic pump A by the second public passage J1.
The course of work of the metering device of automatic analysis meter of present embodiment and embodiment one are similar, do not repeat them here.
The variation that the metering device of automatic analysis meter of present embodiment is expected easily is: peristaltic pump A has five, and is connected with five single-pass solenoid valve f6, f7, f8, f9, the f10 of the second single-pass solenoid valve group F4 respectively, saves the second public passage J1.
Embodiment five
The metering device of automatic analysis meter of present embodiment is the conversion on embodiment three bases as shown in figure 12, and difference is except identical with embodiment two: (1) two single-pass solenoid valve group F3, F4 are replaced by two five two-way electromagnetic valve DF1, DF2; (2) the two the first public passage J2 save.In the present embodiment, when the reagent type number change, the figure place respective change of five two-way electromagnetic valves.
Embodiment six
The metering device of automatic analysis meter of present embodiment as shown in figure 13, it is the improvement on embodiment three bases, transfer block SK adopts the second structure, difference is except identical with embodiment three: the first selector valve F1 and the second selector valve F2 are placed in respectively the two ends of transfer block SK, the stator of the first selector valve F1 and the second selector valve F2 is integrated with the two ends of transfer block SK respectively, and the path of the first selector valve F1 and the second selector valve F2 is formed on respectively on the both ends of the surface and two ends side face of transfer block SK.The first public passage J is formed on the transfer block SK end face at the first selector valve F1 place (namely on the stator of the first selector valve F1).The structure that the moving plate of the first selector valve F1 and the second selector valve F2 and stator (being the both ends of the surface of transfer block SK) match is referring to the description among the embodiment one, the metering process of the metering device of automatic analysis meter of present embodiment and embodiment one are similar, do not repeat them here.
Embodiment seven
The metering device of automatic analysis meter of present embodiment as shown in figure 17, be the improvement on embodiment one basis, difference is except identical with embodiment one: the interface channel of (perhaps between liquid detecting and peristaltic pump A) is provided with a volume pump H between one of the path of the second selector valve K18 and liquid current sensor E.
What use procedure and embodiment one were different is, begin when a measuring period, aspirated first the reagent 1 (reagent 1 adopts solvent, distilled water or a kind of large proportioning reagent etc.) of certain volume by volume pump H, then the same with embodiment one aspiration procedure, by peristaltic pump A successively with reagent 2,3,4,5,6 and sample liquid 7 be stored in the interior conduit of delivery pipe L2, L3, L4, L5, L6, L7; When discharging, peristaltic pump A is motionless, switch in the same manner two operation valves with embodiment one, start reagent 1 that volume pump H will store in it and extrapolate, successively the reagent 2,3,4,5 in the interior conduit that is stored in delivery pipe L2, L3, L4, L5, L6, L7,6 and sample liquid 7 drain among the mixing reactor B.The benefit of doing like this is: when storing the interior conduit volume extremely small (being that the sample metered volume is extremely small) of delivery pipe, if start peristaltic pump A counter-rotating the interior sample of delivery pipe is drained into mixing reactor B, make and remain in the distributing precision that will affect in the delivery pipe between each sample owing to liquid sample viscosity produces wall built-up.The volume pump H that present embodiment increases can be transferred to all samples in the delivery pipe one by one in the hybrid reaction measurement by a kind of solvent (as saying distilled water), thereby scientific research guarantees the distributing precision between each sample.
Metering device of automatic analysis meter of the present invention is not limited to the described concrete technical scheme of above-described embodiment, such as: 1) quantity of liquid stream accumulating passage can change arbitrarily, but is one at least; 2) figure place of the quantity of the import and export of selector valve, single-pass solenoid valve or multidigit two-way electromagnetic valve can be according to reagent type quantity respective change; 3) transfer block SK can also be other shapes, and manhole also can become square through hole or other shape through holes; 4) except selector valve, single-pass solenoid valve and multidigit two-way electromagnetic valve, can also replace with other valves; 5) peristaltic pump A also can be replaced by syringe, volume pump or other liquid stream driver; 6) delivery pipe and transfer block mutually trans-substitution in above-mentioned five embodiment; 7) the single-pass solenoid valve of the first single-pass solenoid valve group F3 and the second single-pass solenoid valve group F4 is can quantity not identical yet; Etc..All employings are equal to the technical scheme of replacing formation and are the protection domain that the present invention requires.
Claims (2)
1. a metering device of automatic analysis meter comprises liquid stream driver, the first operation valve and the second operation valve; It is characterized in that: be connected with liquid stream accumulating passage between described the first operation valve and the second operation valve, the quantity of the separately path of described the first operation valve and the second operation valve all flows the quantity of accumulating passage more than or equal to described liquid; Path one side ports of described the first operation valve is respectively by the external sample of pipeline and utensil, and the path opposite side port of described the first operation valve is communicated with by the side ports of the first public passage with liquid stream accumulating passage; The opposite side port of described liquid stream accumulating passage respectively with the corresponding connection of path one side ports of the second operation valve, the path opposite side port of described the second operation valve flows driver by pipeline and liquid and is connected; The volume of described liquid stream accumulating passage and the first public passage is the definite value that the metered volume with described sample is complementary.
2. described metering device of automatic analysis meter according to claim 1, it is characterized in that: described liquid stream accumulating passage is the interior conduit of delivery pipe.
3. described metering device of automatic analysis meter according to claim 1, it is characterized in that: described liquid stream accumulating passage is the through hole that runs through whole transfer block.
4. described metering device of automatic analysis meter according to claim 3, it is characterized in that: described transfer block is rectangular parallelepiped, described liquid stream accumulating passage is the through hole of making along transfer block cross section parallel interval.
5. described metering device of automatic analysis meter according to claim 3, it is characterized in that: described transfer block is right cylinder, described liquid stream accumulating passage is the through hole that distributes and make along the transfer block cross-sectional periphery.
6. arbitrary described metering device of automatic analysis meter according to claim 1-5, it is characterized in that: described the first operation valve and the second operation valve are respectively to overlay each other the first selector valve and the second selector valve that consists of by stator and moving plate, be shaped with conduit on the described stator, be shaped with notch on the described moving plate; When moving plate rotated, described notch was communicated with the other end of one of conduit respectively.
7. arbitrary described metering device of automatic analysis meter according to claim 1-5 is characterized in that: the first single-pass solenoid valve group and the second single-pass solenoid valve group that described the first operation valve and the second operation valve are comprised of the single-pass solenoid valve respectively.
8. arbitrary described metering device of automatic analysis meter according to claim 1-5 is characterized in that: described the first operation valve and the second operation valve are respectively the first multidigit two-way electromagnetic valve and the second multidigit two-way electromagnetic valve.
9. described metering device of automatic analysis meter according to claim 5, it is characterized in that: described the first operation valve and the second operation valve are respectively to overlay each other the first selector valve and the second selector valve that consists of by stator and moving plate, described the first selector valve and the second selector valve are placed in respectively the two ends of transfer block, the stator of described the first selector valve and the second selector valve is integrated with the two ends of transfer block respectively, the path of described the first selector valve and the second selector valve is formed on respectively on the both ends of the surface and two ends side face of transfer block, described the first public passage is formed on the transfer block end face at the first selector valve place, be shaped with conduit on the both ends of the surface of described transfer block, be shaped with notch on the described moving plate; When moving plate rotated, described notch was communicated with the other end of one of conduit respectively.
10. described metering device of automatic analysis meter according to claim 6, it is characterized in that: the interface channel between one of path of described the second selector valve and the liquid stream driver is provided with volume pump.
11. described metering device of automatic analysis meter according to claim 7 is characterized in that: described liquid stream driver is one, and described the second single-pass solenoid valve group is by the second public passage connecting fluid stream driver.
12. according to claim 1,2,3,4,5 or 9 described metering device of automatic analysis meter, it is characterized in that: the interface channel between described the second operation valve and the liquid stream driver is provided with the liquid current sensor, and described liquid stream driver is peristaltic pump.
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| CN201141864Y (en) * | 2007-11-02 | 2008-10-29 | 郭永亮 | Automatic chemical analyzer |
| CN201364336Y (en) * | 2009-01-20 | 2009-12-16 | 郭永亮 | Dedicated metering device for automatic water quality analyzer |
| CN201364337Y (en) * | 2009-01-20 | 2009-12-16 | 郭永亮 | Automatic water sample analyzer |
| CN201892681U (en) * | 2010-05-19 | 2011-07-06 | 郭永亮 | Metering device of automatic analyser |
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|---|---|
| CN101825642A (en) | 2010-09-08 |
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