CN2935123Y - Eight-port valve and eight-port valve conversion sample-handling system - Google Patents
Eight-port valve and eight-port valve conversion sample-handling system Download PDFInfo
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- CN2935123Y CN2935123Y CN 200620012910 CN200620012910U CN2935123Y CN 2935123 Y CN2935123 Y CN 2935123Y CN 200620012910 CN200620012910 CN 200620012910 CN 200620012910 U CN200620012910 U CN 200620012910U CN 2935123 Y CN2935123 Y CN 2935123Y
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Abstract
The utility model provides an eight-way valve conversion sample system, comprising a valve body, an eight-way valve mated with the valve core. The valve body has eight liquid inlet and outlet openings which are uniformly arranged on the side wall along the circumference direction, each liquid inlet and outlet forms 45 degrees angle with four central angles of the valve core, thereby four passages are formed. The four interval liquid inlet and outlet openings among the eight inlet and outlet liquid openings of the valve body are connected with two pieces of quantitative tubes with equal cubage, and the other four liquid inlet and outlet openings are treated as two inlets and two outlets of the two kinds of liquid. The liquid transmission tubes on the two inlets and two outlets are placed in a peristaltic pump, the transmission tubes on another outlet is connected with an inlet on a mixer. The utility model also provides an eight-way valve. The eight-way valve conversion sample system installs an eight-way valve device in the flowing transmission sample system, through conversion of the eight-way valve; the analysis speed of the instrument is improved due to conversion of the eight-way valve.
Description
Technical field
The utility model relates to a kind of eight logical valves and conversion sampling system thereof, and it is mainly used in analysis instrument fields such as atomic fluorescence.
Background technology
Now the sampling system on the analytical instrument mainly contains two kinds of continuous sample introduction and quantitative sample injections, and corresponding numerical integration is typically chosen in peak height integration and peak area integration.Because the sample consumption of continuous sample inlet system is bigger, therefore generally adopt the mode of quantitative sample injection, develop again on this basis flow injection, intermittently flow, mode such as sequential injection.But these three kinds of input modes are when carrying out continuous sample test, the instrument per minute all is in waiting status after analysing a sample for some time, wait for sampling ring in sampling, also increased the step of cleaning sampling ring in the sampling system of sequential injection, the stand-by period of instrument can be more longer.The wait of these times has influenced the sample analysis speed of instrument, the also work efficiency of lowering apparatus applying unit.
Summary of the invention
The purpose of this utility model is to improve deficiency of the prior art, provide a kind of feasible sampling and conveying adopt sample carry out simultaneously, thereby can accelerate the analysis speed of instrument, improve eight logical valves conversion sampling systems of the working unit efficient that instrument uses.
Another purpose of the present utility model is to provide a kind of eight logical valves.
The eight logical valve conversion sampling systems that the utility model provides,
Comprise one eight logical valve, it comprises a valve body and a spool that matches, valve body is laid with eight liquid in-out mouths on the sidewall of circumferencial direction, each liquid in-out mouth and the angle of four central angles that are provided with on described spool are that 45 ° arc runner is corresponding, thus, constitute four passages;
Also comprise the quantity tube that two volumes equate, the two ends of these two quantity tubes are connected on four liquid in-out mouths separately in eight liquid in-out mouths on the described valve body, and other four the liquid in-out mouths on the valve body are as two imports and two outlets of two kinds of liquid;
Described spool is fixed on the described valve body with respect to described valve body is rotating, close the position of the described quantity tube that described each liquid in-out mouth on the described valve body and the described arc runner on the spool and the liquid in-out mouth on the valve body are provided with: pass through rotational valve core, make described liquid in-out mouth on the described valve body and described four the arc runner place-exchange on the described spool, make described two imports before and after exchange, be communicated with different quantity tubes respectively, form two different logical liquid status with two outlets;
Be connected woven hose in two imports on the described eight logical valves and two outlets.
This eight logical valve conversion sampling system can also comprise peristaltic pump, and the woven hose that an import with eight logical valves wherein is connected places in this peristaltic pump with the drain pipe that an outlet is connected.
This eight logical valve conversion sampling system can also comprise a mixer, and the woven hose in another outlet of described eight logical valves is connected with an import on the described mixer.
Being provided with on the mandrel outside the spool of described eight logical valves makes the end face of spool end and valve body form the end face hold down gag of hermetically-sealed construction closely.
In the sampling system of flow injection, use eight logical valve gears, two passages are worked simultaneously, and in the time of a passage sample introduction test, another passage cleans and adopt next specimen, instrument does not have the stand-by period in the process of analyzing continuously, all the time at the analytical test sample.
Described valve body in the described eight logical valves wherein is preferably columniform, in the middle of this valve body, establish the hole, be provided with a mandrel therein, around this valve body, be laid with described eight liquid in-out mouths on the sidewall, each liquid in-out mouth forms L shaped runner on described valve body, another liquid mouth of runner is positioned on the side end face of valve body, on the mandrel of this side end face one side, be installed with described spool, per two adjacent liquid mouths that the opposing end faces of this spool is provided with on described four 45 ° of arc spool runners and the valve body end face align, and promptly the two ends of arc spool runner align two adjacent liquid mouths on the valve body end face.
On the another side of described valve body, be provided with one eight logical valve state converter, it is included in 45 ° of deep-slotted chip breakers that described valve body is provided with, be provided with an end of a spool transposition pin in the groove, the other end of this spool transposition pin is fixed on the valve core rotation handle, and described valve core rotation handle is fixed on the described mandrel; The relative position of 45 ° of deep-slotted chip breakers and described eight liquid in-out mouths and described four arc spool runners is: when spool transposition pin is positioned at an end of deep-slotted chip breaker, two adjacent end face liquid mouths on each arc spool runner on the spool and the valve body align, make this eight logical valve be in a kind of logical liquid status, when spool turns over 45 °, when spool transposition pin moves to the other end of deep-slotted chip breaker, arc spool runner on the spool is communicated with the liquid mouth on the valve body end face, forms another kind of logical liquid status.
Also be installed with an optocoupler plate washer on described spool, this conversion sampling system also comprises an optocoupler, and its position is: make the termination of described optocoupler plate washer with valve core rotation to the light path that enters or leave an optocoupler.
The eight logical valves that the utility model relates to is characterized in that:
It comprises a valve body and a spool that matches, valve body is laid with eight liquid in-out mouths on the sidewall of circumferencial direction, each liquid in-out mouth and the angle of four central angles that are provided with on described spool are that 45 ° arc runner is corresponding, thus, constitute four passages;
Also comprise the quantity tube that two volumes equate, the two ends of these two quantity tubes are connected on four liquid in-out mouths separately in eight liquid in-out mouths on the described valve body, and other four the liquid in-out mouths on the valve body are as two imports and two outlets of two kinds of liquid;
Described spool is fixed on the described valve body with respect to described valve body is rotating, close the position of the described quantity tube that described each liquid in-out mouth on the described valve body and the described arc runner on the spool and the liquid in-out mouth on the valve body are provided with: pass through rotational valve core, make described liquid in-out mouth on the described valve body and described four the arc runner place-exchange on the described spool, make described two imports before and after exchange, be communicated with different quantity tubes respectively, form two different logical liquid status with two outlets;
Described valve body is columniform, in the middle of this valve body, establish the hole, be provided with a mandrel therein, around this valve body, be laid with described eight liquid in-out mouths on the sidewall, each liquid in-out mouth forms L shaped runner on described valve body, another liquid mouth of runner is positioned on the side end face of valve body, on the mandrel of this side end face one side, be installed with described spool, per two adjacent liquid mouths that the opposing end faces of this spool is provided with on described four 45 ° of arc spool runners and the valve body end face align, and promptly the two ends of arc spool runner align two adjacent liquid mouths on the valve body end face.
Being provided with on the mandrel in the described spool outside makes the end face of spool end and valve body form the end face hold down gag of hermetically-sealed construction closely.
Be provided with 45 ° of deep-slotted chip breakers on the another side of described valve body, be provided with an end of a spool transposition pin in the groove, the other end of this spool transposition pin is fixed on the valve core rotation handle, and described valve core rotation handle is fixed on the described mandrel; The relative position of 45 ° of deep-slotted chip breakers and described eight liquid in-out mouths and described four arc spool runners is: when spool transposition pin is positioned at an end of deep-slotted chip breaker, two adjacent end face liquid mouths on each arc spool runner on the spool and the valve body align, make this eight logical valve be in a kind of logical liquid status, when spool turns over 45 °, when spool transposition pin moves to the other end of deep-slotted chip breaker, arc spool runner on the spool is communicated with the liquid mouth on the valve body end face, forms another kind of logical liquid status.
On described spool, also be installed with an optocoupler plate washer.
It cooperates with the optocoupler that this conversion sampling system comprises, the position of this optocoupler is: make the termination of described optocoupler plate washer with valve core rotation to the light path that enters or leave an optocoupler.
The eight logical valves conversion sampling systems that the utility model provides, the eight logical valve gears that changed the outfit in the sampling system of flow injection improve the analysis speed of instrument by the switchings of eight logical valves.
The eight logical valves that the utility model provides, by structure on it and channels designs, for realize above-mentioned raising together analysis speed reliable guarantee is provided.Further, this eight logical valve changes to endface position with the valve body of multiport valve in the prior art and the hermetically-sealed construction between the spool from radial position.The sealing of such hermetically-sealed construction is more reliable, makes conveniently, uses also lighter.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Eight logical valves of the eight logical valves conversion sampling systems that Fig. 1 provides for the utility model and with the pipeline jointing construction synoptic diagram of other parts;
Fig. 2 a and Fig. 2 b are the synoptic diagram of two duties of the logical valve of eight among Fig. 1;
Fig. 3 is the sectional structure synoptic diagram of eight logical valves.
Embodiment
As shown in Figure 1, the figure of the eight logical valve conversion sampling systems that the utility model provides, current-carrying solution pipeline carry by eight logical valves 11 through peristaltic pump 10 and enter reactor 12, and specimen solution pipeline is introduced into eight logical valves, enters waste liquid bottle by peristaltic pump again; Shown in Fig. 2 a and Fig. 2 b, eight logical valves, eight joints 1 evenly distribute on the valve body 111 of its round section, 2,3,4,5,6,7,8, two kinds of duties when eight logical valves are worked, switching, two quantity tubes 1 in the follow-on test process, 2 are connected respectively on current-carrying pipeline (among the figure shown in the solid line) and the sample inlet (among the figure shown in the dotted line), in the state 1, quantity tube B is connected the current-carrying pipeline when testing, quantity tube A is connected in the specimen pipeline, clean earlier in the section in integral time, adopt next sample then, conversion eight logical valves got the hang of 2 after test finished, quantity tube A is connected to the current-carrying pipeline and tests, and quantity tube B is connected into the specimen pipeline and cleans sample introduction, switches repeatedly between two states like this and finishes follow-on test.
As Fig. 1,2a, shown in the 2b, eight logical valve conversion sampling systems comprise one eight logical valve 11, it comprises a cylinder type valve body 111, the valve body wall that lies around on this valve body is laid with eight liquid in-out mouths 1,2,3,4,5,6,7,8, this liquid in-out mouth turns to a side end face 116 break-through to form L shaped valve flowing channel after the centre is extended one section, the center of valve body 111 is provided with axis hole, the wherein rotating mandrel 120 that wears, on this mandrel 120 of valve body end face 116 1 sides, be installed with spool 118, on the isocentric circular arc at the end face liquid mouth place of corresponding each valve flowing channel on the end face 116 of spool 118, form four arc spool runners, eight runners on the valve body are communicated with into four runners in twos, shown in Fig. 2 a.On the mandrel 120 in the outside of spool 118, also be installed with end face hold down gag 121.Be provided with 45 ° of deep-slotted chip breakers 115 on valve body 111 another sides, be provided with an end of a spool transposition pin 122 in the groove, the other end of this spool transposition pin 122 is fixed on the valve core rotation handle 113.Rotate this handler 113 and make mandrel 120 rotate, move in the deep-slotted chip breaker of spool transposition pin 122 on valve body 111.When spool transposition pin was positioned at an end of deep-slotted chip breaker, each the arc spool runner 117 on the spool 118 aligned with two the adjacent end face liquid mouths on the valve body 111, made this eight logical valve be in a kind of logical liquid status, for example was the state 1 shown in Fig. 2 a.When rotational valve core handler 113 turns over 45 °, when spool transposition pin moved to the other end of deep-slotted chip breaker, the arc spool runner on the spool 118 also turned over 45 °, formed another kind of logical liquid status, for example was the state 2 shown in Fig. 2 b.On the mandrel 120 in spool 118 outsides, be provided with end face hold down gag 121, make the end face of spool end and valve body form hermetically-sealed construction closely; This hold down gag 121 rotates with mandrel.Also be installed with an optocoupler plate washer 119 on spool, it can rotate with mandrel 120, and this conversion sampling system also comprises an optocoupler 114, and its position is: make the termination of optocoupler plate washer 119 turn to the light path that enters or leave optocoupler 114 with poppet shaft 120.Eight logical valves also comprise the quantity tube 112 that two volumes equate, it comprises quantity tube 112A and quantity tube 112B, the two ends of these two quantity tubes are connected on four liquid in-out mouths 4 separately and 8,2 and 6 in described eight liquid in-out mouths, other four liquid in-out mouths are as two imports and two outlets of two kinds of liquid: liquid mouth 1 is the carrier fluid import, liquid mouth 5 is the carrier fluid outlet, liquid mouth 3 is the sample liquid import, and liquid mouth 7 is the sample liquid outlet; Also comprise peristaltic pump and mixer in this sampling system, be connected woven hose in two imports on the described eight logical valves and two outlets, the drain pipe that the woven hose with two imports 1 are connected with 3 wherein is connected with a sample export 7 places in this peristaltic pump; Woven hose in described another outlet 5 is connected with an import on the mixer 12, and one of two other import of mixer connects tracheae 17, and another connects reductive agent pipe (in the bottle 16 is potassium borohydride), and this pipe also places in the peristaltic pump 10.
The course of work of device as shown in Figure 1 is: the reductive agent in the bottle 16 is transported to an input port of mixer 10 by peristaltic pump 10; The current-carrying solution of bottle in 15 is carried through eight by peristaltic pump 10 and is led to another input port that enters mixer 10 behind the quantity tube 112B (112A) of valves 11; The sample solution of bottle in 13 sucked another quantity tube 112A (state 1 shown in Fig. 2 a) of 11 of eight logical valves by peristaltic pump 10, perhaps, the quantity tube 112A that the current-carrying solution of bottle in 15 is carried through eight logical valves 11 by peristaltic pump 10, after enter another input port of mixer 10; The sample solution of bottle in 13 sucked another quantity tube 112B (state 2 shown in Fig. 2 a) of 11 of eight logical valves by peristaltic pump 10, enters waste liquid bottle 14 through peristaltic pump 10 again.
When test, the quantity tube 112A (112B) of sample inlet has gathered sample, rotate eight logical valves, quantity tube 112A (112B) is connected into the current-carrying pipeline, optocoupler 114 is switched on or closes simultaneously, instrument begins to carry out numerical integration, and another quantity tube 112B (112A) is connected into sample inlet and removes to clean and gather next sample.
Along with the spool of eight logical valves is done 45 ° reciprocal rotation, two quantity tubes are alternately as current-carrying pipeline and sample inlet, when making corresponding pipeline in a quantity tube and the eight logical valves carry sample to carry out the sample detection numerical integration to pick-up unit, another root quantity tube and corresponding pipeline clean also gathers next sample.Used such conversion sampling system, the detection operation need not to stop and waits for the cleaning of sample collecting and pipeline, has improved work efficiency greatly.
Claims (10)
1, a kind of eight logical valve conversion sampling systems is characterized in that:
Comprise one eight logical valve, it comprises a valve body and a spool that matches, valve body is laid with eight liquid in-out mouths on the sidewall of circumferencial direction, each liquid in-out mouth and the angle of four central angles that are provided with on described spool are that 45 ° arc runner is corresponding, thus, constitute four passages;
Also comprise the quantity tube that two volumes equate, the two ends of these two quantity tubes are connected on four liquid in-out mouths separately in eight liquid in-out mouths on the described valve body, and other four the liquid in-out mouths on the valve body are as two imports and two outlets of two kinds of liquid;
Described spool is fixed on the described valve body with respect to described valve body is rotating, close the position of the described quantity tube that described each liquid in-out mouth on the described valve body and the described arc runner on the spool and the liquid in-out mouth on the valve body are provided with: pass through rotational valve core, make described liquid in-out mouth on the described valve body and described four the arc runner place-exchange on the described spool, make described two imports before and after exchange, be communicated with different quantity tubes respectively, form two different logical liquid status with two outlets;
Be connected woven hose in two imports on the described eight logical valves and two outlets.
2, according to claim 1 eight logical valve conversion sampling systems, it is characterized in that: also comprise a peristaltic pump, the woven hose that two imports with described eight logical valves wherein are connected places in this peristaltic pump with the drain pipe that an outlet is connected.
3, according to claim 1 eight logical valve conversion sampling systems is characterized in that: also comprise a mixer, the woven hose in another outlet of described eight logical valves is connected with an import on the described mixer.
4, according to claim 1 eight logical valve conversion sampling systems, it is characterized in that: the described valve body in the described eight logical valves is columniform, in the middle of this valve body, establish the hole, be provided with a mandrel therein, around this valve body, be laid with described eight liquid in-out mouths on the sidewall, each liquid in-out mouth forms L shaped runner on described valve body, another liquid mouth of runner is positioned on the side end face of valve body, on the mandrel of this side end face one side, be installed with described spool, per two adjacent liquid mouths that the opposing end faces of this spool is provided with on described four 45 ° of arc spool runners and the valve body end face align, the two ends that are arc spool runner align two adjacent liquid mouths on the valve body end face, are provided with to make the end face of spool end and valve body form the end face hold down gag of hermetically-sealed construction closely on the mandrel in the described spool outside.
5, according to claim 2 eight logical valve conversion sampling systems, it is characterized in that: on the another side of described valve body, be provided with 45 ° of deep-slotted chip breakers, be provided with an end of a spool transposition pin in the groove, the other end of this spool transposition pin is fixed on the valve core rotation handle, and described valve core rotation handle is fixed on the described mandrel; The relative position of 45 ° of deep-slotted chip breakers and described eight liquid in-out mouths and described four arc spool runners is: when spool transposition pin is positioned at an end of deep-slotted chip breaker, two adjacent end face liquid mouths on each arc spool runner on the spool and the valve body align, make this eight logical valve be in a kind of logical liquid status, when spool turns over 45 °, when spool transposition pin moves to the other end of deep-slotted chip breaker, arc spool runner on the spool is communicated with the liquid mouth on the valve body end face, forms another kind of logical liquid status.
6, according to claim 1 or 4 or 5 described eight logical valves conversion sampling systems, it is characterized in that: on described spool, also be installed with an optocoupler plate washer, its termination with valve core rotation to the light path that enters or leave an optocoupler.
7, a kind of eight logical valves is characterized in that:
It comprises a valve body and a spool that matches, valve body is laid with eight liquid in-out mouths on the sidewall of circumferencial direction, each liquid in-out mouth and the angle of four central angles that are provided with on described spool are that 45 ° arc runner is corresponding, thus, constitute four passages;
Also comprise the quantity tube that two volumes equate, the two ends of these two quantity tubes are connected on four liquid in-out mouths separately in eight liquid in-out mouths on the described valve body, and other four the liquid in-out mouths on the valve body are as two imports and two outlets of two kinds of liquid;
Described spool is fixed on the described valve body with respect to described valve body is rotating, close the position of the described quantity tube that described each liquid in-out mouth on the described valve body and the described arc runner on the spool and the liquid in-out mouth on the valve body are provided with: pass through rotational valve core, make described liquid in-out mouth on the described valve body and described four the arc runner place-exchange on the described spool, make described two imports before and after exchange, be communicated with different quantity tubes respectively, form two different logical liquid status with two outlets.
8, according to claim 7 eight logical valves, it is characterized in that: described valve body is columniform, in the middle of this valve body, establish the hole, be provided with a mandrel therein, around this valve body, be laid with described eight liquid in-out mouths on the sidewall, each liquid in-out mouth forms L shaped runner on described valve body, another liquid mouth of runner is positioned on the side end face of valve body, on the mandrel of this side end face one side, be installed with described spool, per two adjacent liquid mouths that the opposing end faces of this spool is provided with on described four 45 ° of arc spool runners and the valve body end face align, the two ends that are arc spool runner align two adjacent liquid mouths on the valve body end face, are provided with to make the end face of spool end and valve body form the end face hold down gag of hermetically-sealed construction closely on the mandrel in the described spool outside.
9, according to claim 7 eight logical valves, it is characterized in that: on the another side of described valve body, be provided with 45 ° of deep-slotted chip breakers, be provided with an end of a spool transposition pin in the groove, the other end of this spool transposition pin is fixed on the valve core rotation handle, and described valve core rotation handle is fixed on the described mandrel; The relative position of 45 ° of deep-slotted chip breakers and described eight liquid in-out mouths and described four arc spool runners is: when spool transposition pin is positioned at an end of deep-slotted chip breaker, two adjacent end face liquid mouths on each arc spool runner on the spool and the valve body align, make this eight logical valve be in a kind of logical liquid status, when spool turns over 45 °, when spool transposition pin moves to the other end of deep-slotted chip breaker, arc spool runner on the spool is communicated with the liquid mouth on the valve body end face, forms another kind of logical liquid status.
10, according to claim 7 or 8 described eight logical valves, it is characterized in that: on described spool, also be installed with an optocoupler plate washer, its termination with valve core rotation to the light path that enters or leave an optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012910 CN2935123Y (en) | 2006-04-03 | 2006-04-03 | Eight-port valve and eight-port valve conversion sample-handling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012910 CN2935123Y (en) | 2006-04-03 | 2006-04-03 | Eight-port valve and eight-port valve conversion sample-handling system |
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| Publication Number | Publication Date |
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| CN2935123Y true CN2935123Y (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620012910 Expired - Fee Related CN2935123Y (en) | 2006-04-03 | 2006-04-03 | Eight-port valve and eight-port valve conversion sample-handling system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603889B (en) * | 2009-06-15 | 2012-07-25 | 广州市怡文环境科技股份有限公司 | Pointwise scanning type micro-fluid metering device and method |
| 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 |
| CN104265952A (en) * | 2014-10-24 | 2015-01-07 | 北京佰纯润宇生物科技有限公司 | Eight-way valve and chromatographic system based on eight-way valve |
| CN104458978A (en) * | 2014-10-24 | 2015-03-25 | 北京佰纯润宇生物科技有限公司 | Five-position eight-way valve and chromatogram system based on five-position eight-way valve |
| CN106442815A (en) * | 2016-11-15 | 2017-02-22 | 成都市食品药品检验研究院 | Integrated speciation and aggregate analysis atomic fluorescence sample feeding and pre-treating system |
| CN107796951A (en) * | 2017-11-15 | 2018-03-13 | 成都理工大学 | A kind of two-way automatic sampler system and its operating method |
| CN109060930A (en) * | 2018-08-22 | 2018-12-21 | 成都理工大学 | A kind of double sample loop sampling systems based on the design of novel eight ways valve |
| CN110470616A (en) * | 2018-05-10 | 2019-11-19 | 北京清测科技有限公司 | Sampling device, mercury analysis system and mercury analysis method |
| CN112066036A (en) * | 2020-10-10 | 2020-12-11 | 核工业理化工程研究院 | Pipeline switching valve |
| CN114545014A (en) * | 2022-04-22 | 2022-05-27 | 成都理工大学 | Double-channel sample introduction system |
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2006
- 2006-04-03 CN CN 200620012910 patent/CN2935123Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603889B (en) * | 2009-06-15 | 2012-07-25 | 广州市怡文环境科技股份有限公司 | Pointwise scanning type micro-fluid metering device and method |
| 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 |
| CN104265952A (en) * | 2014-10-24 | 2015-01-07 | 北京佰纯润宇生物科技有限公司 | Eight-way valve and chromatographic system based on eight-way valve |
| CN104458978A (en) * | 2014-10-24 | 2015-03-25 | 北京佰纯润宇生物科技有限公司 | Five-position eight-way valve and chromatogram system based on five-position eight-way valve |
| CN106442815A (en) * | 2016-11-15 | 2017-02-22 | 成都市食品药品检验研究院 | Integrated speciation and aggregate analysis atomic fluorescence sample feeding and pre-treating system |
| CN106442815B (en) * | 2016-11-15 | 2019-03-15 | 成都市食品药品检验研究院 | Integral type form and macroanalysis atomic fluorescence sample introduction and pretreatment system |
| CN107796951A (en) * | 2017-11-15 | 2018-03-13 | 成都理工大学 | A kind of two-way automatic sampler system and its operating method |
| CN110470616A (en) * | 2018-05-10 | 2019-11-19 | 北京清测科技有限公司 | Sampling device, mercury analysis system and mercury analysis method |
| CN109060930A (en) * | 2018-08-22 | 2018-12-21 | 成都理工大学 | A kind of double sample loop sampling systems based on the design of novel eight ways valve |
| CN112066036A (en) * | 2020-10-10 | 2020-12-11 | 核工业理化工程研究院 | Pipeline switching valve |
| CN114545014A (en) * | 2022-04-22 | 2022-05-27 | 成都理工大学 | Double-channel sample introduction system |
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