CN86204525U

CN86204525U - Multifunction feeding valve

Info

Publication number: CN86204525U
Application number: CN 86204525
Authority: CN
Inventors: 袁有宪; 彭涛; 王学贵
Original assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Current assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Priority date: 1986-06-27
Filing date: 1986-06-27
Publication date: 1987-04-22

Abstract

The utility model discloses a multifunction feeding valve, which is a liquid sample feeding and flow passage converting device. The multifunction feeding valve belongs to the sample feeding valve for the flow injection analysis in analytical chemistry. The multifunction feeding valve is composed of an upper valve sheet (rotor), a lower valve sheet (stator), a central axle, a sampling ring, a bracket, a handle, etc. Each through hole of the upper valve sheet (rotor) and the lower valve sheet (stator) is arranged according to a certain law for forming the completed circuit of the liquid sample feeding and the flow passage converting. The multifunction feeding valve can be made into by metals, organic glass or plastics. The utility model has the advantages of simple structure, simple manufacture, long service life, lower technological requirement, without leaking sample liquid, and multiple functions. The multifunction feeding valve satisfies the requirement of the flow injection analysis, and enlarges the application area of the flow injection analysis technology.

Description

Multifunction feeding valve

A kind of multi-functional sampling valve.

The utility model is a kind of device of liquid sample introduction and stream Zhuan Change, belongs to the sampling valve that Flow Injection Analysis is used in the analytical chemistry.

Before the utility model was made, the sampling valve that uses had five to six kinds both at home and abroad.That 1 or nine the Seventh Five-Year Plan years, Denmark at first invented use is the immutable three valve block list sampling channel sampling valve (J.R of sampling volume

Ka and E, H.Hansen, Flow Injection Analysis, John Wiely and Sons, New York, 1981); Thereafter, improve again used three variable valve block list sampling channels of sampling volume, many sampling channels sampling valve (E.H.Hansen, et al, Analyst, 102(1977); P705).Its structure is by two stators, middle a slice rotors constitute up and down.This valve shortcoming is that difficulty of processing is big, valve block wearing and tearing liquid leakiness, and function very little.In recent years, China's (analytical chemistry, 13(1985) p545, Lv Yinzhong etc.) with Denmark (S.S.J φ rgensen, et al, Anal.chim, Acta, 169(1985) p51-57) designing the two valve structure sampling valves that use respectively, is to be made of last valve block (rotor) and lower valve (stator).Though this valve is simple in structure, and is easy to process, function still can not satisfy the needs of Flow Injection Analysis.

At the deficiency that above-mentioned prior art exists, the purpose of this utility model be design a kind of simple in structure, easy to operate, have multi-functional sampling valve, to satisfy the needs of Flow Injection Analysis, enlarge the application of flowing injecting analysis technology.

The utility model comprises the last valve block (rotor) (1) shown in (Fig. 1), lower valve (stator) (6), axis (7), nut pad (2), carriage (5), handle (8), sampling ring (4), fitting (3), turnover pipeline (9).Last valve block (rotor) has six through holes of three couple shown in (Fig. 2) (11), three grooves (14) and an arc positioning groove (15).One end of through hole (11) becomes 120 degree angles uniform at ramp (10) respectively with side (12), three apertures are respectively arranged; Three pairs of six apertures of the other end of through hole (11) become 120 degree angles to be distributed on the bottom surface (13) with radius R respectively with r.Article three, groove (14) is positioned between each aperture, bottom surface (13), becomes 60 degree angles uniform with each to the aperture, and its trench length equals each to the aperture spacing, and the width and the degree of depth equal the aperture.Lower valve (stator) has 12 through holes of six couple shown in (Fig. 3) (11) and a locating stud (17).Six pairs of 12 through holes are uniform with 60 degree angles respectively, and 12 apertures of six couple on its end face (16) are corresponding with the two ends of six apertures of three couples of last valve block (rotor) bottom surface (13) and three grooves (14) respectively.Locating stud (17) is positioned on lower valve (stator) end face (16), matches with the locating slot (15) of last valve block (rotor).

Description of drawings:

Fig. 1. the utility model structural representation:

1. go up valve block (rotor),

2. nut, pad,

3. fitting,

4. sampling ring,

5. carriage,

6. lower valve (stator),

7. axis,

8. handle,

9. turnover pipeline.

Fig. 2. go up valve block (rotor) just (section), bow, bottom view:

10. ramp,

11. through hole,

12. the side,

13. the bottom surface,

14. groove,

15. locating slot.

Fig. 3. lower valve (stator) just (section), bow, bottom view:

16. end face,

17. locating stud,

18. lower inclined plane.

Be described in detail in conjunction with the embodiments below by accompanying drawing:

With reference to Fig. 1, upward valve block (rotor) (1) of the present utility model and lower valve (stator) (6) are formed the utility model main body with locating stud (17) and locating slot (15) location by axis (7) and nut pad (2).Connect sampling ring (4), lower valve (stator) (6) when connecting liquid turnover pipeline (9) at last valve block (rotor) (1) by fitting (3), just can form the multichannel path of the utility model liquid turnover by fitting (3).Like this, in the Flow Injection Analysis process, last valve block (rotor) (1) rotates according to orientation angle, and by operating grip (8), liquid sample introduction and stream Zhuan Change just can successfully finish.

Two valve blocks can pass through axis (7), nut pad (2) adjusting because of after rotating the use wearing and tearing for a long time, tightly cooperate to reach two valve blocks, and liquid is difficult to be leaked.

Sampling ring can have the spare part of multiple sampling volume, obtains the sample liquid of various different volumes, to satisfy the needs of Flow Injection Analysis.

With reference to Fig. 2, the aperture of six through holes of three couples (11) that the ramp (10) of valve block on the utility model (rotor) (1) and side (12) are uniform can engage by fitting (3) with three sampling ring (4) respectively.

With reference to Fig. 3, the utility model lower valve (stator) (6) has six pairs 12 through holes (11).The aperture of its end face (16) is corresponding with six apertures of three couples and two ends of three grooves on last valve block (rotor) (1) bottom surface (13) respectively, to constitute the path of liquid turnover.Each aperture on its lower inclined plane (18) is the interface of sample liquid and reagent turnover pipeline (9).

By enforcement, the utility model has enlarged the application of flowing injecting analysis technology, has multi-functional advantage:

1. change the sampling ring volume and determine sample size. Can adopt single sampling ring sample introduction; Also can adopt two sampling ring to replace continuously sample introduction.

2. the control time is determined sampling volume.

3. quantitative sample and the reagent that obtains by change sampling ring volume or control time makes sample and reagent bring reacting pipe synchronously into through stream Zhuan Change, with Wan Cheng He And band technology.

4. use with the same liquid and reagent; but through changeing two kinds of elements of Change buffer medium METHOD FOR CONTINUOUS DETERMINATION, also can in same buffer medium, measure the total amount of two kinds of elements, in this buffer medium, add a certain amount of screening agent then and measure wherein a kind of, thereby reach two kinds of elements METHOD FOR CONTINUOUS DETERMINATION simultaneously.

5. to the slower analysis of some reaction velocitys, be that its stop-flow technique was finished by controllable pump before the utility model is made when instrument was made dynamics research by Flow Injection Analysis perhaps.Now the utility model can directly be finished stop-flow technique in the Flow Injection Analysis process, one arrheas from sampling to realize liquid, and this working procedure of a sample introduction flows.

6. be applied to Li Jiao Change enrichment atomic absorption detecting technology.For trace element analysis, by Li the enrichment of child Jiao Change post, to improve Sensitivity of Analytical Method.The utility model can adopt the single-column system, and twin columns replace system to be finished, and working efficiency is higher.

The utility model system is made by metallic material, and simple and reasonable, processing and fabricating is easy, and technological requirement is lower.Also available plexiglass and plastics are made, and have long service life, sample liquid does not leak, function is more advantage, are the ideal tools that Flow Injection Analysis is used in the analytical chemistry.

Claims

1, a kind of multi-functional sampling valve of in analytical chemistry, using for Flow Injection Analysis, be by formations such as last valve block (rotor), lower valve (stator), axis, sampling ring, fitting, turnover pipeline, carriage, handles, the last valve block (rotor) that it is characterized in that it has three pairs of six through holes and three grooves, lower valve (stator) has six pairs of 12 through holes, three pairs of six through holes of last valve block (rotor) and three grooves and six pairs of 12 through holes of lower valve (stator) engage by fitting with three sampling ring and six pairs of 12 liquid turnover pipelines respectively.

2, multi-functional sampling valve according to claim 1 is characterized in that described three pairs of six through holes of valve block (rotor) of going up, and an end of through hole becomes 120 degree angles uniform at the ramp of last valve block (rotor) respectively with the side, three apertures are respectively arranged; Three pairs of six apertures of the other end of port become 120 degree angles to be distributed on the bottom surface of valve block (rotor) with radius R respectively with r.

3, multi-functional sampling valve according to claim 1 is characterized in that described three grooves of valve block (rotor) of going up, and is positioned on valve block (rotor) bottom surface each between the aperture, and with each the aperture being become 60, to spend angles uniform.Trench length equals each to the aperture spacing, and the width and the degree of depth equal the aperture.

4, multi-functional sampling valve according to claim 1 is characterized in that six pairs of 12 through holes of described lower valve (stator), is positioned on the end face and lower inclined plane of lower valve (stator), and each becomes 60 degree angles uniform to the aperture.12 apertures of six couple of the end face of its lower valve (stator) are corresponding with six apertures of three couples and three groove two ends of last valve block (rotor) bottom surface respectively.