CN201454555U - Precision liquid extracting distributor - Google Patents
Precision liquid extracting distributor Download PDFInfo
- Publication number
- CN201454555U CN201454555U CN2009200976920U CN200920097692U CN201454555U CN 201454555 U CN201454555 U CN 201454555U CN 2009200976920 U CN2009200976920 U CN 2009200976920U CN 200920097692 U CN200920097692 U CN 200920097692U CN 201454555 U CN201454555 U CN 201454555U
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- CN
- China
- Prior art keywords
- sliding guide
- fixed
- distributor
- syringe
- liquid
- 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
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Abstract
The utility model discloses a distributor of a drug testing instrument, which is used for extracting liquid from a drug sample. The distributor adopts the specific structure that a passage of a two-position three-way valve is connected with an injection syringe, and the other two passages are taken as a liquid medicine inlet and a liquid medicine outlet respectively; one end of a movable guide rod is connected with a push rod in the injection syringe at an angle of 90 degrees while the other end thereof is connected and fixed with a sliding guide plate through screw threads; a stepping motor is connected with one end of the sliding guide plate through a coupler while the other end thereof is fixed with a horizontal plane of a curved plate; a vertical plane of the curved plate is connected with a linear guide rail; the curved plate drives the sliding guide plate to move vertically along the linear guide rail; a positioning bracket is fixed on a bottom plate through four supporting columns; and the volume of liquid absorbed into and drained out of the injection syringe is ensured by the vertical movement distance of the sliding guide plate, and the range of the movement distance is controlled by the high-precision stepping motor. The utility model can ensure the sampling accuracy and repeatability when combined with a dilution distributor of the drug testing instrument, so as to effectively improve the detection working efficiency and avoid personal errors.
Description
Technical field
The utility model relates to the distributor of in a kind of drug inspection instrument drug sample being got 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 utility model has realized automation mechanized operation on the basis that guarantees the sampling repeatability precision.
Summary of the invention
The purpose of this utility model provides 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 utility model 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 utility model.
Fig. 2 is the side view of Fig. 1.
The specific embodiment
Below by specific embodiment the utility model is described further. 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, a path of two position three-way valve 2 is connected to syringe 3, in addition two paths are respectively as the import and export of soup. and moving leader 4 one ends are 90 ° with push rod in the syringe 3 and are connected, moving leader 4 other ends are connected and fixed with sliding guide 5 by screw thread. and 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 is connected with line slideway 9 with bolt. and line slideway 9 is screwed in the front panel of locating support 1, bent plate 8 drives sliding guide 5 along on the line slideway 9, moving down. locating support 1 is fixed on the base plate 11 by 4 support columns 10. and syringe 3 adopts the precise injection device, the minimum amount of feeding is that 0.3125 μ m. assembles each parts by accompanying drawing. stepper motor energising forward rotation, removable guide moves downward, 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, therefore 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, 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 of inspiration and exhaustjet device internal liquid amount by sliding guide 5, the size of sliding guide 5 displacements is by high-precision step motor control. simultaneously on the sliding guide 5, the assurance of vertical linearity has very big influence to the precision of getting liquid measure when mobile down, therefore, the positioning accuracy of the locating support 1 of the accuracy class of line slideway 9 and integral type is the key that guarantees to get the liquid measure precision.
Characteristics of the present utility model are, be used for automatically getting liquid and distribute the dilution distributor of liquid sample to make up, guarantee the degree of accuracy and the repeatability of sampling, having simultaneously higher security 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, guide rail, bent plate, stepper motor, shaft coupling, sliding guide and guide rod, 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 |
|---|---|---|---|
| CN2009200976920U CN201454555U (en) | 2009-07-09 | 2009-07-09 | Precision liquid extracting distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200976920U CN201454555U (en) | 2009-07-09 | 2009-07-09 | Precision liquid extracting distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201454555U true CN201454555U (en) | 2010-05-12 |
Family
ID=42381902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200976920U Expired - Lifetime CN201454555U (en) | 2009-07-09 | 2009-07-09 | Precision liquid extracting distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201454555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117981A (en) * | 2018-01-08 | 2018-06-05 | 张家港万众芯生物科技有限公司 | A kind of drop formula biological monitor and method |
-
2009
- 2009-07-09 CN CN2009200976920U patent/CN201454555U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117981A (en) * | 2018-01-08 | 2018-06-05 | 张家港万众芯生物科技有限公司 | A kind of drop formula biological monitor and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090709 |