CN203465248U - Dilution-free linearity curve drawing chromatographic instrument - Google Patents
Dilution-free linearity curve drawing chromatographic instrument Download PDFInfo
- Publication number
- CN203465248U CN203465248U CN201320563263.4U CN201320563263U CN203465248U CN 203465248 U CN203465248 U CN 203465248U CN 201320563263 U CN201320563263 U CN 201320563263U CN 203465248 U CN203465248 U CN 203465248U
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- connecting hole
- center
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The utility model provides a dilution-free linearity curve drawing chromatographic instrument comprising a separation column, a six-way changeover valve, a plurality of quantitative tubes and two changeover valves, wherein each changeover valve comprises a stator and a rotor, a first connecting hole is arranged in the center of the stator, a plurality of second connecting holes are arranged around the center of the stator, the rotor is provided with a connecting groove passing through the rotation center of the rotor, the rotor clings to the stator, the rotation center of the rotor is superposed with the center of the stator, and the first connecting hole is connected with the corresponding second connecting holes through the connecting groove; the first connecting holes of the two changeover valves are correspondingly connected with the six-way changeover valve, the plurality of quantitative tubes are arranged between the two changeover valves, and the quantitative tubes are connected with the second connecting holes of the corresponding changeover valve. The two changeover valves are matched to change over the different quantitative tubes to take part in detection, and solutions with different concentrations are obtained by changing the amount of substances entering the separation column through the different quantitative tubes, so that the measuring precision of the dilution-free linearity curve drawing chromatographic instrument is improved.
Description
Technical field
The utility model relates to Studies by Chromatography electricity testing device, relates in particular to a kind of chromatograph that linearity curve is made in dilution of exempting from.
Background technology
Chromatograph application chromatography is carried out the instrument of qualitative and quantitative analysis to material.As depicted in figs. 1 and 2, chromatograph of the prior art generally includes workstation 101, detecting device 102, detection cell 103, separating column 104, quantity tube 105 and six direction changeover valves 106, the two ends of quantity tube 105 are connected on two ports of six direction changeover valves 106, outside injector 108 is connected to six direction changeover valves 106, and leacheate container 107 is also connected on six direction changeover valves 106 by pump 1071.When needs are analyzed, first, as shown in Figure 1, injector 108 is injected into solution to be analyzed in quantity tube 105 by six direction changeover valves 106, and too much solution enters into waste liquid barrel 109; In quantity tube 105, fill with after solution to be analyzed, as shown in Figure 2, six direction changeover valve 106 switching states, the leacheate that pump 1071 is carried enters into quantity tube 105 and the solution to be analyzed of quantity tube 105 is delivered to separating column 104, then through detection cell 103, detecting device 102 and workstation 101, analyzes the parameters such as appearance time, peak height and peak area of solution under this CONCENTRATION STATE.When doing stratographic analysis linearity curve, conventionally need to measure the parameter value of a plurality of concentration point to obtain linearity curve, and because the volume V of quantity tube 105 is certain, must remove to change the quantity n that enters into separating column 104 materials, i.e. n=C*V by changing material concentration C.But, linearity curve concentration point choose precision General Requirements at several ppb(μ g/L) to tens ppm(mg/L) and between and select at least 5 concentration point, and at the dry of material and weigh, container scale and the error of material be, the error of manual operation will affect the precision of linearly dependent coefficient, causes the reduction of chromatograph measuring accuracy; And for the cleaning repeatedly of container and dry, accurately prepare the concentration solution of the required a plurality of concentration point of linearity curve, also increased greatly operating personnel's workload.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of chromatograph that linearity curve is made in dilution of exempting from is provided, solve chromatograph in prior art and be affected by human factors the defect that causes measuring accuracy to reduce, realize and improve chromatographic measuring accuracy, reduce operating personnel's workload.
The technical scheme that the utility model provides is, a kind ofly exempts from the chromatograph that linearity curve is made in dilution, comprises separating column, pump and six direction changeover valves, and described separating column is connected with described six direction changeover valves respectively with described pump, also comprises many quantity tubes and two cross-over valves; Described cross-over valve comprises stator and rotor, the center of described stator is provided with the first connecting hole, described stator Shang Raoqi center is provided with a plurality of the second connecting holes, on described rotor, be provided with link slot, described link slot is through the rotation center of described rotor, described rotor is attached on described stator, the rotation center of described rotor and the center superposition of described stator, and described the first connecting hole connects with corresponding described the second connecting hole by described link slot; The first connecting hole of two described cross-over valves is corresponding to be connected with described six direction changeover valves, is provided with many described quantity tubes between two described cross-over valves, the described second connecting hole connection of described quantity tube and corresponding described cross-over valve.
The utility model provides again a kind of chromatograph that linearity curve is made in dilution of exempting from, and comprises separating column, pump and six direction changeover valves, and described separating column is connected with described six direction changeover valves respectively with described pump, also comprises many quantity tubes and two cross-over valves; Described cross-over valve comprises stator and rotor, one side at the center of described stator is provided with the first connecting hole, described stator Shang Raoqi center is provided with a plurality of the second connecting holes, described rotor is provided with circular groove around its rotation center, on described rotor, be also provided with link slot, described link slot is connected with described circular groove, described rotor is attached on described stator, the rotation center of described rotor and the center superposition of described stator, described the first connecting hole is connected with described circular groove, and described link slot connects with corresponding described the second connecting hole; The first connecting hole of two described cross-over valves is corresponding to be connected with described six direction changeover valves, is provided with many described quantity tubes between two described cross-over valves, the described second connecting hole connection of described quantity tube and corresponding described cross-over valve.
Further, on described stator, be also fixedly connected with valve head, the center of described valve head is provided with the first external tapping, described valve head Shang Raoqi center is provided with a plurality of the second external tappings, described the first external tapping is communicated with described the first connecting hole, described the second external tapping is communicated with corresponding described the second connecting hole, and described the first external tapping is connected with described six direction changeover valves, and described the second external tapping is connected with described quantity tube; A plurality of described the second external tappings are divergent shape setting or a plurality of described the second external tapping is distributed on the circumferential side wall of described valve head along inside surface to the outside surface direction of described valve head.
Further, on described stator, be provided with boss structure, described rotor is attached on the surface of described boss structure.
The utility model provides again a kind of chromatograph that linearity curve is made in dilution of exempting from, and comprises separating column, pump and six direction changeover valves, and described separating column is connected with described six direction changeover valves respectively with described pump, also comprises many quantity tubes, cross-over valve one and cross-over valve two, described cross-over valve one comprises stator one and rotor one, the center of described stator one is provided with the first connecting hole, described stator Yi Shangraoqi center is provided with a plurality of the second connecting holes, on described rotor one, be provided with the first link slot, described the first link slot is through the rotation center of described rotor one, described rotor one is attached on described stator one, the center superposition of the rotation center of described rotor one and described stator one, described the first connecting hole connects with corresponding described the second connecting hole by described the first link slot, described cross-over valve two comprises stator two and rotor two, one side at described stator Er center is provided with the 3rd connecting hole, described stator Er Shangraoqi center is provided with a plurality of the 4th connecting holes, described rotor two is provided with circular groove around its rotation center, on described rotor, be also provided with the second link slot, described the second link slot is connected with described circular groove, described rotor two is attached on described stator two, the center superposition of the rotation center of described rotor two and described stator two, described the 3rd connecting hole is connected with described circular groove, described the second link slot connects with corresponding described the 4th connecting hole, described the first connecting hole is connected with described six direction changeover valves with described the 3rd connecting hole, is provided with many described quantity tubes between described cross-over valve one and described cross-over valve two, and described quantity tube is connected with the 4th connecting hole with corresponding described the second connecting hole.
Further, on described stator one, be provided with boss structure one, described rotor one is attached on the surface of described boss structure one; On described stator two, be provided with boss structure two, described rotor one is attached on the surface of described boss structure two.
The utility model provides exempts from the chromatograph that linearity curve is made in dilution, by adopting two cross-over valves to coordinate, switch different quantity tube participation detections, the volume of each quantity tube is different, can change and enter into the quantity of separating column material with the solution of acquisition variable concentrations by different quantity tubes, according to formula n=C*V, take C as constant, the V of take measures the parameter of solution under variable concentrations as variable, in measuring process, the solution that modulates variable concentrations without operating personnel is measured, and the solution that can adopt same concentration obtains the solution of variable concentrations in separating column by different quantity tubes, effectively having avoided container and people is the precision of the error effect linearity curve that causes, realize the process of manpower-free's dilute solution, improved and exempted from the chromatographic measuring accuracy that linearity curve is made in dilution, reduced operating personnel's workload.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is chromatographic structural representation one in prior art;
Fig. 2 is chromatographic structural representation two in prior art;
Fig. 3 is that the utility model is exempted from the structural representation one that the chromatograph embodiment of linearity curve is made in dilution;
Fig. 4 is that the utility model is exempted from the structural representation two that the chromatograph embodiment of linearity curve is made in dilution;
Fig. 5 is that the utility model is exempted from the structural representation three that the chromatograph embodiment of linearity curve is made in dilution;
Fig. 6 is that the utility model is exempted from the structural representation that cross-over valve in the chromatograph embodiment of linearity curve is made in dilution.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
As shown in Figure 3, the present embodiment is exempted from the chromatograph that linearity curve is made in dilution, comprise workstation 101, detecting device 102, detection cell 103, separating column 104, pump 401, many not isometric quantity tubes 106, six direction changeover valves 200 and waste liquid barrel 105, wherein, six direction changeover valves 200 are along the circumferential direction disposed with the first valve port, the second valve port, the 3rd valve port, the 4th valve port, the 5th valve port and the 6th valve port, separating column 104 is connected with the 3rd valve port of six direction changeover valves 200, waste liquid barrel 105 is connected with the 6th valve port, the present embodiment is exempted from the chromatograph that dilution makes linearity curve and is also comprised two cross-over valves 300 that are communicated with six direction changeover valves 200 for switching different basis weights pipe 106.Wherein, cross-over valve 300 comprises stator 1 and rotor 2, wherein, stator 1 is the part of depicted as solid lines in Fig. 3, rotor 2 is the part of dotted lines in Fig. 3, the center of stator 1 is provided with the first connecting hole 11, stator 1 Shang Raoqi center is provided with a plurality of the second connecting holes 12, on rotor 2, be provided with link slot 21, link slot 21 is through the rotation center of rotor 2, rotor 2 is attached on stator 1, the center superposition of the rotation center of rotor 2 and stator 1, and the first connecting hole 11 connects with the second corresponding connecting hole 12 by link slot 21; The first connecting hole 11 of two cross-over valves 300 is corresponding to be connected with the 4th valve port with the first valve port of six direction changeover valves, between two cross-over valves 300, is provided with many quantity tubes 106, the second connecting hole 12 connections of quantity tube 106 and corresponding cross-over valve 300.
Particularly, in the present embodiment, two cross-over valves 300 cooperatively interact to realize and switch different basis weights pipe 106 and be connected with the 4th valve port with the first valve port, in test process, by solution to be analyzed, the 6th valve port by six direction changeover valves 200 is injected into the present embodiment and exempts from dilution and do in the chromatograph of linearity curve injector 500, solution to be analyzed enters into certain buret 106 by six direction changeover valves 200 and cross-over valve 300, at quantity tube 106, fill with after solution to be analyzed, six direction changeover valve 200 switching states, leacheate container 400 is injected into leacheate in six direction changeover valves 200 by pump 401, leacheate is entered into this quantity tube 106 and the solution to be analyzed of quantity tube 106 is delivered to separating column 104 by six direction changeover valves 200 and cross-over valve 300, then by detection cell 103, detecting device 102 and workstation 101 analyze the appearance time of solution under this CONCENTRATION STATE, the parameter such as peak height and peak area.Then, by two cross-over valves 300, switching different quantity tubes 106 is again connected with six direction changeover valves 200, again carry out above-mentioned steps, to obtain the appearance time of solution under another CONCENTRATION STATE, the parameter such as peak height and peak area, just can be according to many groups gain of parameter of measuring linearity curve accurately, carry out linearity curve while measuring exempting from chromatograph that dilution makes linearity curve by the present embodiment, without operating personnel, allocate the solution of multiple variable concentrations, effectively having avoided container and people is the precision of the error effect linearity curve that causes, realize the process of manpower-free's dilute solution, improved and exempted from the chromatographic measuring accuracy that linearity curve is made in dilution.Wherein, to exempt from the chromatograph that dilution makes linearity curve can be ion chromatograph or liquid chromatograph to the present embodiment.
Embodiment bis-
As shown in Figure 4, the present embodiment is exempted from dilution and is made the chromatograph of linearity curve and the difference of above-described embodiment one is: a side at the center of stator 1 is provided with the first connecting hole 11, stator 1 Shang Raoqi center is provided with a plurality of the second connecting holes 12, rotor 2 is provided with circular groove 21 around its rotation center, on rotor 2, be also provided with link slot 22, link slot 22 is connected with circular groove 21, rotor 2 is attached on stator 1, the center superposition of the rotation center of rotor 2 and stator 1, the first connecting hole 11 is connected with circular groove 21, and link slot 22 connects with the second corresponding connecting hole 22.The present embodiment is exempted from the chromatographic specific operation process that dilution makes linearity curve and can, referring to the record in above-described embodiment one, do not repeated them here.
Embodiment tri-
The present embodiment is exempted from the chromatograph that linearity curve is made in dilution, comprise workstation 101, detecting device 102, detection cell 103, separating column 104, many not isometric quantity tubes 106, six direction changeover valves 200 and waste liquid barrel 105, wherein, six direction changeover valves 200 are along the circumferential direction disposed with the first valve port, the second valve port, the 3rd valve port, the 4th valve port, the 5th valve port and the 6th valve port, separating column 104 is connected with the 3rd valve port of six direction changeover valves 200, waste liquid barrel 105 is connected with the 6th valve port, the present embodiment is exempted from the chromatograph that dilution makes linearity curve and is also comprised two cross-over valve 1 and cross-over valves 2 302 that are communicated with six direction changeover valves 200 for switching different basis weights pipe 106.Wherein, the concrete structure of cross-over valve 1 can, referring to the concrete structure of cross-over valve in above-described embodiment one, not repeat them here; And the concrete structure of cross-over valve 2 302 can, referring to the concrete structure of cross-over valve in above-described embodiment two, not repeat them here.The present embodiment is exempted from the chromatographic specific operation process that dilution makes linearity curve and can, referring to the record in above-described embodiment one, do not repeated them here.
Technical scheme based on above-described embodiment one, two, three, preferably, in order to reduce the friction force between stator 1 and rotor 2, on stator 1, be provided with boss structure (not shown), the first connecting hole 11 and the second connecting hole 12 are distributed on the surface of boss structure, and rotor 2 is attached on the surface of boss structure.Concrete, boss structure on stator 1 contacts with rotor 2, effectively reduce the contact area between rotor 2 and stator 1, after rotor 2 contacts with boss structure, by the surface of contact between rotor 2 and boss structure, sealed up groove structure on rotor 2 and the pore structure on stator 1.Wherein, the stator 1 in the present embodiment and rotor 2 can adopt polyetheretherketone (to be called for short: PEEK) high-abrasive material such as resin, nylon is made, and with more effective reduction friction factor, reduces wear.Further, as shown in Figure 6, cross-over valve 300 can be also hand valve for motorized valve, and cross-over valve 300 does not limit its type of drive, in addition, cross-over valve 300 can be high-pressure valve, can be low pressure valve, cross-over valve 300 limit its environment for use, and cross-over valve 300 be take motorized valve and the assembly relation of stator 1 and rotor 2 described as example yet, stator 1 in cross-over valve 300 and rotor 2 are arranged in shell 4 conventionally, and motor 5 drives rotor 2 to rotate.Further, on stator 1, be also fixedly connected with valve head 3, the center of valve head 3 is provided with the first external tapping (not shown), valve head 3 Shang Raoqi centers are provided with a plurality of the second external tappings 31, the second external tapping 31 is communicated with corresponding the second connecting hole 12, and a plurality of the second external tappings 31 are divergent shape setting or a plurality of the second external tapping 31 is distributed on the circumferential side wall of valve head 3 along inside surface to the outside surface direction of valve head 3.Concrete, the second external tapping 31 is divergent shape setting on valve head 3, thereby when occurring that the second connecting hole 12 occurs to stop up, can adopt fine needle to be inserted in the second connecting hole 12 and to clear up along the second external tapping 31, thereby without dismounting cross-over valve 300, just can clear up easily the second connecting hole 12 of blocking.And the second external tapping 31 is distributed on the circumferential side wall of valve head 3, the xsect of the second external tapping 31 is L-type structure, more convenient processing.Wherein, the present embodiment is exempted from the chromatograph that linearity curve is made in dilution, concrete measuring method is: according to formula n=C*V, take C as constant, by cross-over valve 300, select the quantity tube 106 of different volumes to be communicated with six direction changeover valves 200, change and enter into the quantity of separating column 104 materials with the solution of acquisition variable concentrations, and then the parameter of analyzing solution under acquisition variable concentrations is to draw out linearity curve; Wherein, C is material concentration, the volume that V is quantity tube, the quantity that n is material.
The present embodiment is exempted from the chromatograph that linearity curve is made in dilution, by adopting two cross-over valves to coordinate, switch different quantity tube participation detections, the volume of each quantity tube is different, can change and enter into the quantity of separating column material with the solution of acquisition variable concentrations by different quantity tubes, according to formula n=C*V, take C as constant, the V of take measures the parameter of solution under variable concentrations as variable, in measuring process, the solution that modulates variable concentrations without operating personnel is measured, and the solution that can adopt same concentration obtains the solution of variable concentrations in separating column by different quantity tubes, effectively having avoided container and people is the precision of the error effect linearity curve that causes, realize the process of manpower-free's dilute solution, improved and exempted from the chromatographic measuring accuracy that linearity curve is made in dilution, reduced operating personnel's workload.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (6)
1. exempt from dilution and make a chromatograph for linearity curve, comprise separating column, pump and six direction changeover valves, described separating column is connected with described six direction changeover valves respectively with described pump, it is characterized in that, also comprises many quantity tubes and two cross-over valves; Described cross-over valve comprises stator and rotor, the center of described stator is provided with the first connecting hole, described stator Shang Raoqi center is provided with a plurality of the second connecting holes, on described rotor, be provided with link slot, described link slot is through the rotation center of described rotor, described rotor is attached on described stator, the rotation center of described rotor and the center superposition of described stator, and described the first connecting hole connects with corresponding described the second connecting hole by described link slot; The first connecting hole of two described cross-over valves is corresponding to be connected with described six direction changeover valves, is provided with many described quantity tubes between two described cross-over valves, the described second connecting hole connection of described quantity tube and corresponding described cross-over valve.
2. exempt from dilution and make a chromatograph for linearity curve, comprise separating column, pump and six direction changeover valves, described separating column is connected with described six direction changeover valves respectively with described pump, it is characterized in that, also comprises many quantity tubes and two cross-over valves; Described cross-over valve comprises stator and rotor, one side at the center of described stator is provided with the first connecting hole, described stator Shang Raoqi center is provided with a plurality of the second connecting holes, described rotor is provided with circular groove around its rotation center, on described rotor, be also provided with link slot, described link slot is connected with described circular groove, described rotor is attached on described stator, the rotation center of described rotor and the center superposition of described stator, described the first connecting hole is connected with described circular groove, and described link slot connects with corresponding described the second connecting hole; The first connecting hole of two described cross-over valves is corresponding to be connected with described six direction changeover valves, is provided with many described quantity tubes between two described cross-over valves, the described second connecting hole connection of described quantity tube and corresponding described cross-over valve.
3. according to claim 1 and 2ly exempt from dilution and make the chromatograph of linearity curve, it is characterized in that, on described stator, be also fixedly connected with valve head, the center of described valve head is provided with the first external tapping, described valve head Shang Raoqi center is provided with a plurality of the second external tappings, described the first external tapping is communicated with described the first connecting hole, described the second external tapping is communicated with corresponding described the second connecting hole, described the first external tapping is connected with described six direction changeover valves, and described the second external tapping is connected with described quantity tube; A plurality of described the second external tappings are divergent shape setting or a plurality of described the second external tapping is distributed on the circumferential side wall of described valve head along inside surface to the outside surface direction of described valve head.
4. according to claim 1 and 2 exempting from diluted the chromatograph of making linearity curve, it is characterized in that, on described stator, be provided with boss structure, described rotor is attached on the surface of described boss structure.
5. exempt from dilution and make a chromatograph for linearity curve, comprise separating column, pump and six direction changeover valves, described separating column is connected with described six direction changeover valves respectively with described pump, it is characterized in that, also comprises many quantity tubes, cross-over valve one and cross-over valve two, described cross-over valve one comprises stator one and rotor one, the center of described stator one is provided with the first connecting hole, described stator Yi Shangraoqi center is provided with a plurality of the second connecting holes, on described rotor one, be provided with the first link slot, described the first link slot is through the rotation center of described rotor one, described rotor one is attached on described stator one, the center superposition of the rotation center of described rotor one and described stator one, described the first connecting hole connects with corresponding described the second connecting hole by described the first link slot, described cross-over valve two comprises stator two and rotor two, one side at described stator Er center is provided with the 3rd connecting hole, described stator Er Shangraoqi center is provided with a plurality of the 4th connecting holes, described rotor two is provided with circular groove around its rotation center, on described rotor, be also provided with the second link slot, described the second link slot is connected with described circular groove, described rotor two is attached on described stator two, the center superposition of the rotation center of described rotor two and described stator two, described the 3rd connecting hole is connected with described circular groove, described the second link slot connects with corresponding described the 4th connecting hole, described the first connecting hole is connected with described six direction changeover valves with described the 3rd connecting hole, is provided with many described quantity tubes between described cross-over valve one and described cross-over valve two, and described quantity tube is connected with the 4th connecting hole with corresponding described the second connecting hole.
6. according to claim 5 exempting from diluted the chromatograph of making linearity curve, it is characterized in that, on described stator one, be provided with boss structure one, described rotor one is attached on the surface of described boss structure one; On described stator two, be provided with boss structure two, described rotor one is attached on the surface of described boss structure two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563263.4U CN203465248U (en) | 2013-09-11 | 2013-09-11 | Dilution-free linearity curve drawing chromatographic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563263.4U CN203465248U (en) | 2013-09-11 | 2013-09-11 | Dilution-free linearity curve drawing chromatographic instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203465248U true CN203465248U (en) | 2014-03-05 |
Family
ID=50177601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320563263.4U Expired - Lifetime CN203465248U (en) | 2013-09-11 | 2013-09-11 | Dilution-free linearity curve drawing chromatographic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203465248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679260A (en) * | 2018-07-05 | 2018-10-19 | 卡川尔流体科技(上海)有限公司 | One kind taking into account cost and the remaining separate type reversal valve/switch valve structure of optimization |
-
2013
- 2013-09-11 CN CN201320563263.4U patent/CN203465248U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679260A (en) * | 2018-07-05 | 2018-10-19 | 卡川尔流体科技(上海)有限公司 | One kind taking into account cost and the remaining separate type reversal valve/switch valve structure of optimization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105223264A (en) | Mark method, device and application in a kind of simulation of mass spectrum quantitative test | |
| CN102226788B (en) | Four-gradient elution analysis method of glycated hemoglobin analyzer | |
| CN101782587A (en) | Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum | |
| CN203241404U (en) | Automatic multi-parameter chemical reagent filling device of water quality online analyzer | |
| CN110243974A (en) | Gas chromatographic detection device and gas-chromatography detection system | |
| CN203465248U (en) | Dilution-free linearity curve drawing chromatographic instrument | |
| CN203465249U (en) | Dilution-free linearity curve drawing chromatographic instrument | |
| CN103969375A (en) | An elution method for liquid chromatography and inspection equipment thereof | |
| CN103439432B (en) | Dilution-free linear curve chromatograph and linear curve measuring method | |
| CN202330372U (en) | Ion chromatography system for detecting petroleum drilling solution in an online manner | |
| CN203465247U (en) | Dilution-free linearity curve drawing chromatographic instrument | |
| CN203643409U (en) | Tester for testing sampling efficiency of volatile organic compound in air | |
| CN112526042A (en) | Full-automatic multi-channel needle type gas sampling device and automatic online gas dilution method | |
| CN104237418B (en) | Exempt to dilute the chromatograph and linearity curve measuring method of making linearity curve | |
| CN103675123A (en) | Test method for sampling efficiency of volatile organic compounds in air and special device | |
| CN201364336Y (en) | Dedicated metering device for automatic water quality analyzer | |
| CN103675125B (en) | Test device for sampling efficiency of volatile organic compounds in air | |
| CN102980789B (en) | Water petroleum pollutant on-line enrichment device | |
| CN214122131U (en) | Full-automatic multi-channel needle type gas sample injection device | |
| CN212180697U (en) | Online analysis device for mixed gas | |
| CN211825663U (en) | Device integrating colorimetric function and quantitative infusion function | |
| CN103558313A (en) | Gas chromatography determination device for sulfur hexafluoride decomposition products | |
| CN203908852U (en) | Automatic online micro sample diluting and mixing system | |
| CN202057634U (en) | Sample feeding pressure stabilizing device for gas chromatograph | |
| CN201314905Y (en) | Special chromatographic column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
|
| CX01 | Expiry of patent term |