CN110174485A - A kind of syringe for trace species analysis - Google Patents
A kind of syringe for trace species analysis Download PDFInfo
- Publication number
- CN110174485A CN110174485A CN201910567871.4A CN201910567871A CN110174485A CN 110174485 A CN110174485 A CN 110174485A CN 201910567871 A CN201910567871 A CN 201910567871A CN 110174485 A CN110174485 A CN 110174485A
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- Prior art keywords
- filter
- electric pushrod
- suction chamber
- suction
- solution
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- 238000004458 analytical method Methods 0.000 title claims abstract description 16
- 239000000243 solution Substances 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 55
- 239000007924 injection Substances 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 17
- 241000894007 species Species 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000037237 body shape Effects 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 description 17
- 230000006872 improvement Effects 0.000 description 9
- 229940088597 hormone Drugs 0.000 description 8
- 239000005556 hormone Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/18—Injection using a septum or microsyringe
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
- G01N2030/146—Preparation by elimination of some components using membranes
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of syringes for trace species analysis, including injection device and filter, injection device includes the electric pushrod from top to bottom set gradually, to install the fixed block of electric pushrod, inject cavity and suction connector, the side of fixed block is provided with the glove hole to accommodate electric pushrod, there is solution suction chamber in injecting cavity body, it is equipped between fixed block and injection cavity to separate glove hole, the sealing element of solution suction chamber, spring is equipped in solution suction chamber, the bottom of solution suction chamber is fixed in one end of spring, the other end is abutted against with sealing element, suction connector side is provided with the suction channel being connected with solution suction chamber, the free end of electric pushrod is protruded into glove hole and presses sealing element so that the pressure size of solution suction chamber changes.Syringe of the invention avoids being lost in injection importing internal lining pipe, while to being filtered in injection, chromatographic column being avoided to block.
Description
Technical field
The present invention relates to a kind of syringes, more particularly, to a kind of syringe for trace species analysis.
Background technique
With the development of agriculture industrialization, the production of agricultural product is increasingly dependent on the substances such as pesticide, antibiotic and hormone
To obtain more industrial values.Excessive because launching, tie substance level seriously threatens agriculture beyond limitation in environment, agricultural product
Product quality and safety.Therefore agricultural product quality and safety is ensured, the accurate trace materials level analyzed in environment or agricultural product is base
Plinth, pre-treating method are premises.
Hormone is broadly divided into external source and endogenous hormones, the improper use of exogenous hormone or abuse in aquatic products, causes it in water
There is residual in product, human health is caused centainly to endanger.And aquatic products Endogenous Hormone Contents in Vitro and aquatic products own growth are sent out
Educate locating growing environment, edible bait, accelerating mode related (usual Endogenous Hormones are lower, are million/level-one
Not, belong to trace analysis scope), and reasonable, efficient pretreatment mode is the premise of trace species analysis.
According to existing standard GB/T21981-2008 " hormone multi-residue determination method liquid chromatogram-in animal-derived food
Mass spectrum/mass spectrography " in point out, gas chromatograph can be used or liquid phase is penetrated spectrometer and detected.Its analytical procedure can be divided into: sample
Preparation extracts, purification, is concentrated and measures, wherein generally need constant volume in the autosampler sample bottle of 2ml after concentration,
For chromatographic determination.If the sample solution after constant volume must be measured again after 0.22 μm of membrane filtration, to remove in solvent
Molecule, to avoid blocking chromatographic column.
However, remaining for hormone or agricultural and veterinary chemicals, especially trace materials is detected, because its background concentration is relatively low, therefore
It is quantitative convenient for analysis to improve solution concentration to be measured that constant volume can be accordingly reduced when constant volume, but due to the sample volume of solvent compared with
It is small so that liquid level can not be lifted, be not easy to chromatograph and tested and analyzed.Therefore, the prior art is by using in sample injection bottle
The interior sample internal lining pipe that adds is to raise the liquid level of solvent, which is located in sample injection bottle, and the opening direction of internal lining pipe
It is identical as the opening direction of sample injection bottle.The spout diameter of the internal lining pipe is less than sample injection bottle, therefore can be lifted the liquid level of solvent,
And then it is tested and analyzed convenient for chromatograph.But because the nozzle of internal lining pipe becomes smaller, so that liquid pole when entering internal lining pipe
Easily because own tension reason rests at internal lining pipe nozzle position, and then subsequent solution is caused to cannot be introduced into internal lining pipe, very
To spilling, thus have much room for improvement.
Summary of the invention
It, should the purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of syringe for trace species analysis
Syringe can avoid injection import internal lining pipe in is lost, while can in injection foreign matter and particle be filtered,
Filter effect is good and can avoid chromatographic column blocking.
The invention adopts the following technical scheme: a kind of syringe for trace species analysis, including injection device and
Filter, the injection device include the electric pushrod from top to bottom set gradually, the fixed block to install electric pushrod, note
Cavity and suction connector are penetrated, the side of the fixed block is provided with the glove hole to accommodate electric pushrod, the injecting cavity
There is solution suction chamber in vivo, be equipped between the fixed block and injection cavity to separate glove hole, solution suction chamber
Sealing element, spring is equipped in the solution suction chamber, the bottom of solution suction chamber, institute are fixed in one end of the spring
It states the spring other end to abut against with sealing element, the side of the suction connector is provided with the suction being connected with solution suction chamber
Channel, the free end of the electric pushrod are protruded into glove hole and press sealing element so that the space size of solution suction chamber is sent out
Changing is to change the indoor pressure of solution suction chamber, and the side of the suction connector and filter are mating, the filtering
Device is provided with suction liquid injection port far from the side of suction connector.
As an improvement the filter is provided with the drainage matched with suction liquid injection port far from one end of injection device
Pipe, the both ends open that the drainage tube is is up big and down small structure, the side cross section that the drainage tube is matched with sample injection bottle
Less than the side cross section matched with the suction liquid injection port at filter.
As an improvement the sealing element is made of rubber material.
As an improvement the filter includes shell, the shell is built-in with and can be connected with suction connector
It is connected to chamber, the side of the shell is removably connected with Microporous filter elements, and the side of the shell is additionally provided with can be with micropore mistake
The recessing groove that filter component matches；When in Microporous filter elements insertion recessing groove, the Microporous filter elements are placed in company
It is matched in cavity and with suction connector, the side of the shell is provided with connector that can be mating with suction connector.
As an improvement the Microporous filter elements include the micropore filtering film matched with suction connector, and
Mutually matched upper filter holder, lower filter holder, the upper filter holder and lower filter holder are in circle body shape, and are being enclosed
The middle part of body is equipped with the grid to set off micropore filtering film, and the micropore filtering film is a sheet body, is placed in the upper filter membrane branch
Match between frame and lower filter holder and with grid position.
As an improvement the filter further includes the pick-and-place components having to install Microporous filter elements, the inserting
Part includes the grip block and the film circle intracavitary positioned at connection for protruding from hull outside and being affectedly bashful for human hands, described micro-
Hole filter assemblies are placed in film circle and fix with film circle hot pressing, are provided with link block between the film circle and grip block.
As an improvement electric pushrod or its electricity with coding motor of the electric pushrod using servo electric machine type
Dynamic push rod.
Beneficial effects of the present invention: the present invention is different from the existing syringe using mode of injecting, and passes through electric pushrod
The variation of free end, to eject to sealing element and be matched with spring, to reach by changing solution suction chamber interior pressure
The function of suction liquid.And existing electric pushrod standard stroke is between 100-400mm, but its maximum thrust to sealing element
Up to 6000N, feature controllable with stroke and big thrust, and then sample injection bottle is determined in Detecting Pesticide environment
Rong Shi first passes through big stroke and draws external solution, then molten will gradually be located at by the stroke control to electric pushrod
The indoor solution of liquid suction chamber is slowly discharged.The solution of discharge is introduced directly into sample injection bottle.
When in use, sealing element is ejected by the free end of electric pushrod so that the indoor space of solution suction chamber becomes
Small, spring is squeezed, and then will inhale liquid injection port and stretch to in draw solution, subsequent start-up electric pushrod, so that electric pushrod
Free end retraction, solution suction chamber expand its space size under the action of the spring, form negative pressure in solution suction chamber,
To be aspirated to external solution.When needing to exclude liquid, the free end of electric pushrod is stretched out, again to sealing element ejection, spring
Compression, so that the indoor space of solution suction chamber becomes smaller and is pressurized, which is conducive to solution by being filtered in filter,
So as to in injection foreign matter and particle be filtered, filter effect it is good and can avoid chromatographic column blocking.Using this method,
It can also be achieved and micro liquid is operated.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is Fig. a kind suction connector and the structural schematic diagram of filter, drainage tube in the engagement condition；
Fig. 3 is the structural schematic diagram after Fig. 2 removal drainage tube；
Fig. 4 is the structural blast schematic diagram of Fig. 3；
Fig. 5 is the structural schematic diagram of Microporous filter elements in Fig. 4；
Fig. 6 is the structural blast schematic diagram of Fig. 5.
Appended drawing reference: 1, injection device；2, filter；3, electric pushrod；4, fixed block；5, cavity is injected；6, suction connects
Head；7, glove hole；8, solution suction chamber；9, sealing element；10, spring；11, suction channel；12, liquid injection port is inhaled；13, it drains
Pipe；14, shell；15, it is connected to chamber；16, Microporous filter elements；17, connector；18, recessing groove；19, micropore filtering film；20, on
Filter holder；21, lower filter holder；22, grid；23, pick-and-place components；24, block is held；25, film circle；26, link block.
Specific embodiment
It elaborates below in conjunction with attached drawing to specific embodiments of the present invention.
As shown in figs 1 to 6, a kind of syringe for trace species analysis, including injection device 1 and filter 2,
Injection device 1 includes the electric pushrod 3 from top to bottom set gradually, the fixed block 4 to install electric pushrod 3, injection cavity 5
And suction connector 6, the side of fixed block 4 are provided with the glove hole 7 to accommodate electric pushrod 3, have in injection cavity 5 molten
Liquid suction chamber 8 is equipped with the sealing element 9 to separate glove hole 7, solution suction chamber 8 between fixed block 4 and injection cavity 5,
Spring 10 is equipped in solution suction chamber 8, the bottom of solution suction chamber 8, the other end and sealing are fixed in one end of spring 10
Part 9 abuts against.The side of suction connector 6 is provided with the suction channel 11 being connected with solution suction chamber 8, electric pushrod 3
Free end is protruded into glove hole 7 and presses sealing element 9 so that the space size of solution suction chamber 8 changes to change solution
Pressure in suction chamber 8, to complete suction movement.And spring 10 facilitate sealing element 9 no electric pushrod 3 force under it is extensive
Again to original state.The side of suction connector 6 and filter 2 are mating, and filter 2 is arranged far from the side of suction connector 6
Have and inhales liquid injection port 12.
The present invention is different from the existing syringe using mode of injecting, by the variation of 3 free end of electric pushrod, with right
Sealing element 9 is ejected and is matched with spring 10, to reach the function of suction liquid by changing 8 internal pressure of solution suction chamber
Energy.And existing 3 standard stroke of electric pushrod is between 100-400mm, but its to the maximum thrust of sealing element 9 up to 6000N,
The controllable and big thrust feature with stroke, and then when Detecting Pesticide environment carries out constant volume to sample injection bottle, first lead to
Excessive stroke draws external solution, then is controlled by the stroke to electric pushrod 3 will gradually be located at solution suction chamber
Solution in room 8 is slowly discharged.The solution of discharge is introduced directly into the internal lining pipe of sample injection bottle.
When in use, the space so that in solution suction chamber 8 is ejected to sealing element 9 by the free end of electric pushrod 3
Become smaller, spring 10 is squeezed, then will inhale liquid injection port 12 and stretch to in draw solution, subsequent start-up electric pushrod 3, so that electric
Dynamic 3 free end of push rod retraction, solution suction chamber 8 expands its space size under the action of spring 10, in solution suction chamber 8
Interior formation negative pressure, to be aspirated to external solution.When needing to exclude liquid, the free end of electric pushrod 3 is stretched out, again to sealing
The ejection of part 9, spring 10 compress, so that the space in solution suction chamber 8 becomes smaller and is pressurized, which is conducive to solution and passed through
Be filtered in filter 2, so as to in injection foreign matter and particle be filtered, filter effect it is good and can avoid chromatographic column
Blocking.Using this method, it can also be achieved and micro liquid is operated.
Further, filter 2 is provided with the drainage tube matched with suction liquid injection port 12 far from one end of injection device 1
13, sample solution to be detected can be drained in the internal lining pipe in sample injection bottle and carry out constant volume by drainage tube 13.Drainage tube 13
Both ends open be up big and down small structure, the side cross section matched with the internal lining pipe in sample injection bottle be less than at filter 2
The side cross section that matches of suction liquid injection port 12 so that by the solution of the filtering discharge of filter 2 via drainage tube 13 at
When, of short duration overstocked (since the feed speed of drainage tube 13 is greater than liquid speed degree) can be carried out in drainage tube 13, can be convenient for making
User accurately carries out constant volume to sample injection bottle, gives the fault-tolerant chance of user, extends the reaction time of fault-tolerant redemption.
Further, sealing element 9 is made of rubber material.So that the raw material of sealing element 9 are honest, are easy to get and are easy to add
Work.
Further, filter 2 includes shell 14, and shell 14 is built-in with the connection chamber that can be connected with suction connector 6
15, the side of shell 14 is removably connected with Microporous filter elements 16.The side of shell 14 is additionally provided with can be with Microporous filter elements
16 recessing grooves 18 matched.When Microporous filter elements 16 are inserted into recessing groove 18, Microporous filter elements 16 are placed in connection chamber
It is matched in 15 and with suction connector 6.The side of shell 14 is provided with connector 17 that can be mating with liquid injection port 12 is inhaled.It is logical
It crosses and shell 14 is removably mounted at the suction connector 6 of 1 one end of injection device, and Microporous filter elements 16 are detachable
On installation to shell 14, user can replace the Microporous filter elements 16 of respective aperture according to actual needs, not of the same race to meet
The micro porous filtration of class chromatographic column needs.Meanwhile two Microporous filter elements 16 can be used respectively in two links of imbibition and fluid injection,
To realize the molecule in high-precision removal solution, to avoid to the solution secondary filter in the sample injection bottle of being imported
Chromatographic column blocking.It is thus not necessarily to entirely abandon filter 2 after a single use, only needs to change Microporous filter elements 16,
Realization is used repeatedly.
Further, Microporous filter elements 16 include the micropore filtering film 19 matched with suction connector 6, and mutually
Upper filter holder 20, the lower filter holder 21 of cooperation, upper filter holder 20 and lower filter holder 21 are in circle body shape, and are being enclosed
The middle part of body is equipped with the grid 22 to set off micropore filtering film 19.Micropore filtering film 19 is a sheet body, is placed in filter holder
Match between 20 and lower filter holder 21 and with 22 position of grid.When injection device 1 carries out injecting fluid, in the work of pressure
With the lower solvent in injection device 1 micro porous filtration can be carried out via filter 2.
Further, filter 2 further includes the pick-and-place components 23 having to install Microporous filter elements 16, and pick-and-place components 23 include
Have and protrudes from the grip block 24 being affectedly bashful outside shell 14 for human hands and the film circle 25 in connection chamber 15, micropore
Filter assemblies 16 are placed in film circle 25 and fix with 25 hot pressing of film circle, are provided with link block 26 between film circle 25 and grip block 24.
When needing replacing, installing Microporous filter elements 16, grip block 24 need to be only affectedly bashful by human hands, and then control micro porous filtration
Component 16 is mounted and taken out.
Further, electric pushrod 3 can be used servo electric machine type electric pushrod or its have coding the electronic of motor push away
Bar, such electric pushrod may make the Telescopic Fixed distance in free end, preferably to eject to sealing element 9, to adjust solution suction
Arrange the pressure in chamber 8.This is the prior art, is not described in detail herein.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of syringe for trace species analysis, including injection device (1) and filter (2), it is characterised in that: institute
Stating injection device (1) includes electric pushrod (3), the fixed block to install electric pushrod (3) from top to bottom set gradually
(4), cavity (5) are injected and suction connector (6), the side of the fixed block (4) is provided with to accommodate electric pushrod (3)
Glove hole (7), the injection cavity (5) is interior to have solution suction chamber (8), between the fixed block (4) and injection cavity (5)
Equipped with the sealing element (9) to separate glove hole (7), solution suction chamber (8), bullet is equipped in the solution suction chamber (8)
The bottom of solution suction chamber (8), spring (10) other end and sealing are fixed in spring (10), one end of the spring (10)
Part (9) abuts against, and the side of the suction connector (6) is provided with the suction channel (11) being connected with solution suction chamber (8),
The free end of the electric pushrod (3) is protruded into glove hole (7) to sealing element (9) pressure so that the sky of solution suction chamber (8)
Between size change to change the pressure in solution suction chamber (8), the side and filter (2) of the suction connector (6)
Mating, the filter (2) is provided with far from the side of suction connector (6) inhales liquid injection port (12), and the filter (2) is remote
One end from injection device (1) is provided with the drainage tube (13) matched with suction liquid injection port (12), the drainage tube (13)
Both ends open is up big and down small structure, and the side cross section that the drainage tube (13) matches with internal lining pipe is less than and filter
(2) the side cross section that the suction liquid injection port (12) at matches.
2. a kind of syringe for trace species analysis according to claim 1, it is characterised in that: the sealing element
(9) it is made of rubber material.
3. a kind of syringe for trace species analysis according to claim 1, it is characterised in that: the filter
It (2) include shell (14), the shell (14) is built-in with the connection chamber (15) that can be connected with suction connector (6), the shell
The side of body (14) is removably connected with Microporous filter elements (16), and the side of the shell (14) is additionally provided with can be with micro porous filtration
The recessing groove (18) that component (16) matches；When the Microporous filter elements (16) insertion recessing groove (18) is interior, the micropore
Filter assemblies (16) are placed in connection chamber (15) and match with suction connector (6), and the side of the shell (14) is provided with can
The connector (17) mating with suction connector (6).
4. a kind of syringe for trace species analysis according to claim 3, it is characterised in that: the micro porous filtration
Component (16) includes the micropore filtering film (19) and mutually matched upper filter holder matched with suction connector (6)
(20), lower filter holder (21), the upper filter holder (20) and lower filter holder (21) are in circle body shape, and in circle body
Middle part is equipped with the grid (22) to set off micropore filtering film (19), and the micropore filtering film (19) is a sheet body, is placed in described
Match between upper filter holder (20) and lower filter holder (21) and with grid (22) position.
5. a kind of syringe for trace species analysis according to claim 4, it is characterised in that: the filter
It (2) further include the pick-and-place components (23) having to install Microporous filter elements (16), the pick-and-place components (23) include to protrude from shell
The external grip block (24) being affectedly bashful for human hands of body (14) and the film circle (25) being located in connection chamber (15), it is described micro-
Hole filter assemblies (16) are placed in film circle (25) and fix with film circle (25) hot pressing, between the film circle (25) and grip block (24)
It is provided with link block (26).
6. a kind of syringe for trace species analysis according to claim 1, it is characterised in that: the electric pushrod
(3) using the electric pushrod of servo electric machine type or its electric pushrod with coding motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567871.4A CN110174485A (en) | 2019-06-27 | 2019-06-27 | A kind of syringe for trace species analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567871.4A CN110174485A (en) | 2019-06-27 | 2019-06-27 | A kind of syringe for trace species analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110174485A true CN110174485A (en) | 2019-08-27 |
Family
ID=67699212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910567871.4A Pending CN110174485A (en) | 2019-06-27 | 2019-06-27 | A kind of syringe for trace species analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110174485A (en) |
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| CN2691598Y (en) * | 2004-04-28 | 2005-04-13 | 刘超 | Multipurpose puncture draining apparatus |
| JP2011000490A (en) * | 2009-06-16 | 2011-01-06 | Nichiryo Co Ltd | Pipette |
| CN202666105U (en) * | 2012-06-07 | 2013-01-16 | 杨昌燕 | Disposable aseptic particle entrapment injector |
| CN203935254U (en) * | 2014-07-01 | 2014-11-12 | 刘京 | The puncture injection integral type syringe that draws water |
| CN105588740A (en) * | 2014-10-20 | 2016-05-18 | 中国石油天然气股份有限公司 | Sample flushing device and crude oil extraction and content determination method of oil-containing rock |
| CN104623768A (en) * | 2015-03-11 | 2015-05-20 | 张亚平 | Simple safety injection syringe |
| CN107014937A (en) * | 2017-04-10 | 2017-08-04 | 新疆农业科学院农业质量标准与检测技术研究所 | A kind of filter and its application |
| CN206642443U (en) * | 2017-04-17 | 2017-11-17 | 浙江利民化工有限公司 | A kind of filtering device for diesel |
| CN207036784U (en) * | 2017-08-01 | 2018-02-23 | 安徽省化工研究院 | A kind of removable fast filtering head |
| CN207394931U (en) * | 2017-09-15 | 2018-05-22 | 绍兴凯森厨卫有限公司 | A kind of pullable strainer |
| CN207468463U (en) * | 2017-11-13 | 2018-06-08 | 江苏双盈纺织科技有限公司 | A kind of printing and dyeing mill's sludge treatment equipment for having anti-scaling structure |
| CN107971051A (en) * | 2017-12-08 | 2018-05-01 | 王光勇 | A kind of canister bottle with control valve |
| CN207675712U (en) * | 2018-01-10 | 2018-07-31 | 中华人民共和国日照出入境检验检疫局 | A kind of automatic microporous filter of sample for ion chromatograph detection |
| CN208617346U (en) * | 2018-07-12 | 2019-03-19 | 李荫柱 | A kind of drainage funnel |
| CN210199036U (en) * | 2019-06-27 | 2020-03-27 | 浙江省海洋水产养殖研究所 | Injector for trace substance analysis |
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