CN101596468B - Precise liquid-fetching distributor - Google Patents
Precise liquid-fetching distributor Download PDFInfo
- Publication number
- CN101596468B CN101596468B CN2009100696568A CN200910069656A CN101596468B CN 101596468 B CN101596468 B CN 101596468B CN 2009100696568 A CN2009100696568 A CN 2009100696568A CN 200910069656 A CN200910069656 A CN 200910069656A CN 101596468 B CN101596468 B CN 101596468B
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- China
- Prior art keywords
- sliding guide
- distributor
- bent plate
- fixed
- syringe
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- Expired - Fee Related
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Abstract
The invention discloses a distributor for carrying out liquid fetching on a medicine specimen in a medicine inspection instrument. The distributor has the concrete structure that a path of a two-position three-way valve is connected with an injector, and the other two paths are respectively used as an inlet and an outlet of liquor; one end of a moving guide bar is in connection of 90 degrees with a pushing bar in the injector, and the other end is fixedly connected with a sliding guide plate by screw threads; a stepping motor is connected with one end of the sliding guide plate by a shaft coupling, and the other end is fixed with the horizontal plane of a bent plate; the vertical plane of the bent plate is connected with a linear guideway; the bent plate drives the sliding guide plate to move up and down along the linear guideway; positioning brackets are fixed on a bottom plate by four support columns; and the quantity of liquid sucked into or discharged out of the inside of the injector is ensured by the upper and lower moving distances of the sliding guide plate, and the size of the moving distances is controlled by the stepping motor with high precision. The invention is combined with a medicine inspection instrument dilution distributor, can ensure the accuracy and repeatability of sampling and can effectively enhance the detection work efficiency and avoid personal errors.
Description
Technical field
The present invention relates in a kind of drug inspection instrument drug sample be got the distributor of liquid.
Background technology
Along with the raising of drug test automation equipment level, the sampling of liquid towards drug samples such as drug test mechanism or pharmaceutical factory laboratory and the precision of distribution etc. require more and more higher.All there are problems such as the sampling human error is big, complex operation, labour intensity height in manual pipettor used in the present laboratory from aspects such as sampling precision or operation sequences in the operation engineering.Adopt Single-chip Controlling dilution distributor, can realize that the liquid towards drug sample moves the automation mechanized operation of liquid, but get liquid and move the degree of accuracy of liquid and precision is unusual important index.If continue to continue to use manual pipettor then can't guarantee sampling precision.Proposition of the present invention has realized automation mechanized operation on the basis that guarantees the sampling repeatability precision.
Summary of the invention
The purpose of this invention is to provide a kind of for taking a sample automatically in the dilution distributor and distributing required precise liquid-fetching distributor.
Followingly structural principle of the present invention is illustrated with reference to accompanying drawing.A two position three-way valve is fixed on the front panel of locating support, and a path in the two position three-way valve connects syringe; In addition two paths are respectively as the import and export of soup.Be 90 ° with a moving leader and push rod in the syringe and be connected, the moving leader other end is connected and fixed by screw thread and sliding guide.Stepper motor is connected with an end of sliding guide by shaft coupling, and the other end of guide plate is fixed with the horizontal plane of bolt and bent plate, and the vertical plane of bent plate also is connected with line slideway with bolt.Rotation by stepper motor can make sliding guide of being fixed on the bent plate etc. move up and down along line slideway like this, and sliding guide connects together with push rod in moving leader and the syringe, when stepper motor rotates, can make the push rod of syringe produce displacement, soup is sucked or releases.The syringe that adopts is the precise injection device, the syringe outer tube material is a quartz glass, the head of syringe intracavity bottom and injector push-rod adopts polytetrafluoroethylene (PTFE), for the effect of the medicine that has the pharmaceutical chemistry composition without any corrosion, the cross pollution when not having residual liquid to avoid getting liquid in the syringe inner chamber simultaneously.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 is the side view of Fig. 1.
The specific embodiment
Below the present invention is described further by specific embodiment.Precise liquid-fetching distributor has: locating support, triple valve, syringe, support column, guide rail, bent plate, stepper motor, shaft coupling, sliding guide and guide rod etc.Concrete structure is: two position three-way valve 2 is fixed in the front panel of locating support 1, and a path of two position three-way valve 2 is connected to syringe 3, and in addition two paths are respectively as the import and export of soup.Moving leader 4 one ends are 90 ° with push rod in the syringe 3 and are connected, and moving leader 4 other ends are connected and fixed by screw thread and sliding guide 5.Stepper motor 6 is connected with an end of sliding guide 5 by shaft coupling 7, and the other end of sliding guide 5 is fixed with the horizontal plane of screw and bent plate 8, and the vertical plane of bent plate 8 also is connected with line slideway 9 with bolt.Line slideway 9 is screwed in the front panel of locating support 1, and bent plate 8 drives sliding guide 5 along line slideway 9 upper and lower moving.Locating support 1 is fixed on the base plate 11 by 4 support columns 10.Syringe 3 adopts the precise injection device, and the minimum amount of feeding is 0.3125 μ m.Each parts is assembled by accompanying drawing.Stepper motor energising forward rotation, removable guide moves downward, and the push rod that removable guide drives again in the syringe moves down, the inner negative pressure that produces of syringe this moment.Because the two position three-way valve import is connected in the dilution distributor, so the inner negative pressure that produces of syringe is with in the detected soup inhalation syringe.In like manner, stepper motor energising backward rotation, the push rod that removable guide and moving leader drive syringe moves up, and the push rod of syringe is discharged the liquid in the syringe from the two position three-way valve opening part.How much moving up or down apart from guaranteeing that the size of sliding guide 5 displacements is by high-precision step motor control of inspiration and exhaustjet device internal liquid amount by sliding guide 5.Simultaneously sliding guide 5 upper and lower when mobile the assurance of vertical linearity the precision of getting liquid measure is had very big influence, therefore, the positioning accuracy of the accuracy class of line slideway 9 and the locating support of integral type 1 is the key that guarantees to get the liquid measure precision.
Characteristics of the present invention are, be used for getting automatically liquid and distribute the dilution distributor of liquid sample to make up, guarantee the degree of accuracy and the repeatability of sampling, having higher security simultaneously can satisfy fully and move liquid in the laboratory, get liquid and rationed needs, improve testing efficient, avoid human error.
Claims (1)
1. precise liquid-fetching distributor, has locating support, two position three-way valve, syringe, support column, line slideway, bent plate, stepper motor, shaft coupling, sliding guide and moving leader, it is characterized in that two position three-way valve (2) is fixed in the front panel of locating support (1), a path of two position three-way valve (2) is connected to syringe (3), two paths advancing as soup respectively in addition, outlet, moving leader (4) one ends are 90 ° with push rod in the syringe (3) and are connected, moving leader (4) other end is connected and fixed by screw thread and sliding guide (5), stepper motor (6) is connected with an end of sliding guide (5) by shaft coupling (7), the other end of sliding guide (5) is fixed with the horizontal plane of screw and bent plate (8), the vertical plane of bent plate (8) also uses bolt to be connected with line slideway (9), bent plate (8) drives sliding guide (5) and moves up and down along line slideway (9), line slideway (9) is screwed in the front panel of locating support (1), and locating support (1) is fixed on the base plate (11) by 4 support columns (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100696568A CN101596468B (en) | 2009-07-09 | 2009-07-09 | Precise liquid-fetching distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100696568A CN101596468B (en) | 2009-07-09 | 2009-07-09 | Precise liquid-fetching distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101596468A CN101596468A (en) | 2009-12-09 |
| CN101596468B true CN101596468B (en) | 2011-11-09 |
Family
ID=41418171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100696568A Expired - Fee Related CN101596468B (en) | 2009-07-09 | 2009-07-09 | Precise liquid-fetching distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101596468B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313656B (en) * | 2011-07-30 | 2013-06-05 | 昌乐县供电公司 | Totally-enclosed integral transferring and sampling device for transformer oil |
-
2009
- 2009-07-09 CN CN2009100696568A patent/CN101596468B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101596468A (en) | 2009-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Luogen Science & Tech. Co., Ltd. Assignor: Tianda Tianfa Technology Co., Ltd. Contract record no.: 2011120000192 Denomination of invention: Precise liquid-fetching distributor License type: Exclusive License Open date: 20091209 Record date: 20111014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |