CN107179219A - A kind of two-stage metered shot device - Google Patents
A kind of two-stage metered shot device Download PDFInfo
- Publication number
- CN107179219A CN107179219A CN201710570685.7A CN201710570685A CN107179219A CN 107179219 A CN107179219 A CN 107179219A CN 201710570685 A CN201710570685 A CN 201710570685A CN 107179219 A CN107179219 A CN 107179219A
- Authority
- CN
- China
- Prior art keywords
- plunger
- outer barrel
- inner cylinder
- shot device
- metered shot
- 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.)
- Pending
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- 239000012780 transparent material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
- G01F11/04—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1002—Reagent dispensers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N2001/002—Devices for supplying or distributing samples to an analysing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
- G01N2001/242—Injectors or ejectors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to a kind of two-stage metered shot device, belong to quantitative appliances technical field.Two-stage metered shot device connects the outer barrel of mouth rear end opening including front end provided with syringe needle, and the first plunger matched with the outer barrel, and hollow tubular vertically is set in the middle part of first plunger and constitutes the inner cylinder connected with the outer barrel；Also include the second plunger mutually matched with the inner cylinder；First plunger is closed with the outer barrel and elapsed along axle, is completed wide range and is taken, notes sample；Second plunger is closed with the inner cylinder and elapsed vertically, is completed small-range and is taken, notes sample.Coordinated by the two-stage of wide range and small-range, realize taking, noting sample metering for degree of precision, and extremely convenient when taking, noting sample is combined in multi-agent sample.
Description
Technical field
The present invention relates to a kind of two-stage metered shot device, belong to quantitative appliances technical field.
Background technology
Tubular type syringe is common tool, and its is with low cost, can measure out and shift conveying, in gas, liquid detecting
Quantitative sampling or be administered in sample is convenient to use.
In the prior art, achievable syringe quantitative function is generally that syringe carries quantitative mark, such as basis in itself
Plunger is with respect to the displacement of outer barrel, and the scale on outer barrel, which is realized, to be measured.Sample and inject for metering in this way
There is larger difficulty.Due to scale limited precision, quantitative effect is difficult to realize accurate, and the difference caused by personal is also than larger.
If necessary to carry out simultaneously a variety of doses of samples compounding and different agent samples sampling amount difference it is larger when, then need first to use different accuracy
Syringe separately sampled to different doses of samples allocate again, it is difficult to pass through the operation of shot device and complete, increase operation difficulty
And cause bigger error.
In view of the technical problem of foregoing presence, should develop a kind of novel injector with more excellent metering precision, be easy to
Carry out quantitative drawing sample in the work such as gas detection, liquid detecting.
The content of the invention
It is an object of the invention to provide a kind of two-stage metered shot device of achievable degree of precision.
The technical scheme used for：
A kind of two-stage metered shot device, including front end connect the outer barrel of mouth rear end opening provided with syringe needle, and with the outer barrel
The first plunger matched；Hollow tubular vertically is set in the middle part of first plunger and constitutes what is connected with the outer barrel
Inner cylinder.Also include the second plunger mutually matched with the inner cylinder；First plunger is closed with the outer barrel and elapsed along axle,
Wide range is completed to take, note sample；Second plunger is closed with the inner cylinder and elapsed vertically, is completed small-range and is taken, notes sample.
Further, the rear end of second plunger is provided with the spacing handle of the internal diameter more than the inner cylinder, makes described the
Two plungers are elapsed to bottom by spacing.When making the first plunger of extraction, it is negative pressure to answer inside syringe, the first plunger of limitation not to
Interior sliding；And in injectant sample, it is preferentially interior to push away the second plunger although inside syringe being malleation, therefore this need not be considered
When the second plunger it is spacing.
Further, the length of second plunger matches with the inner cylinder, second plunger is elapsed to bottom
It is equal with first plunger afterwards, i.e., described first plunger and second plunger elapse to bottom its front end with it is described
Outer barrel bottom interior wall offsets, and thus avoids dead volume.
Further, the front end of the first described plunger and second plunger is provided with elastic chock plug.Pass through such a mode
Ensure closure, firmer material can be used in plunger frame, it is ensured that structural stability, improves the positioning precision of plunger.
Further, the outside of the inner cylinder is provided with rack, and in the end of the outer barrel provided with being acted on by down spring
Thimble.The thimble offsets with the rack, first plunger thimble when without traction power is supported to described
First plunger is forced to be slid to the recess of the rack during the non-recess of rack, and the thimble is when supporting to the rack recess
It is stable.
Further, the outer barrel is transparent material, and the outer barrel is provided with scale, before first plunger
Measure at end；The outside of second plunger is provided with scale, is measured with reference to the rear end of first plunger.With conventional syringe
Equally, by scale can direct reading, it is convenient and practical.
Further, the scale on the scale, the outer barrel, the tooth pitch of its metric unit and the rack closes for direct ratio
System.
Further, fin is additionally provided with the outside of the inner cylinder, the inwall of the fin and the outer barrel offsets, made described
Second plunger is during passage without departing from axial direction.
Further, the fin, its quantity is 3, and is uniformly distributed along the external circumferential of the inner cylinder.
Further, the rack is arranged between 2 adjacent fins.
Compared with prior art, two-stage metered shot device of the invention at least has the advantages that：
(1) coordinated by the two-stage of wide range and small-range, realize taking, noting sample metering for degree of precision；And in multi-agent sample
It is combined extremely convenient when taking, noting sample；
(2) because the pushing distance of first plunger has fixed spacing gradient, it need not be examined during the second plunger of passage
Consider the compression movement of the first plunger, facilitate metrological operation；And wide range takes, injection amount is fixed integral multiple change, further
Ensure higher measuring accuracy；
(3) fin design realizes good limit effect simultaneously, keeps plunger passage smooth and without departing from axial direction, it is ensured that behaviour
Make convenient and metering accurate；
(4) operating habit of conventional syringe, convenient use are retained；And it is simple in construction, it is easy to fabricate, cost is low
It is honest and clean.
In summary, the present invention provides the two-stage metered shot device of a set of achievable degree of precision, with efficient, extensive
Practicality.
Brief description of the drawings
Fig. 1 is a kind of longitudinal profile structure schematic of two-stage metered shot device in the present invention.
Fig. 2 is a kind of dimensional structure diagram of two-stage metered shot device in the present invention.
Embodiment
For the technological means and beneficial effect of the present invention is expanded on further, below in conjunction with accompanying drawing and preferred embodiment, to this
A kind of two-stage metered shot device of invention is described in detail：
As shown in Figure 1, two-stage metered shot device includes the outer barrel 1 that front end connects mouth rear end opening provided with syringe needle, and
The first plunger matched with outer barrel；Hollow tubular vertically is set in the middle part of first plunger and constitutes connected with outer barrel interior
Cylinder 2.Also include the second plunger 3 mutually matched with inner cylinder；In the front end of the front end outer side of outer barrel 2 and the second plunger 3 provided with elasticity
Chock plug.First plunger is closed with outer barrel 1 and elapsed along axle, is completed wide range and is taken, notes sample；Second plunger 3 and the closing of inner cylinder 2 and edge
Axially passage, completes small-range and takes, notes sample.
The rear end of second plunger 3 is provided with the spacing handle more than the internal diameter of inner cylinder 2, the second plunger is elapsed to bottom limited
Position.
The length of second plunger 3 matches with inner cylinder 2, the second plunger 3 is elapsed to bottom equal with the first plunger, i.e., and
Its front end offsets with the bottom interior wall of outer barrel 1 after one plunger is elapsed on earth with the second plunger 3, thus avoids dead volume.
Also, syringe needle, which connects mouth and set, is partial to side, to take, injecting sample.And the elastic chock plug of the front end outer side of outer barrel 2
Correspondence syringe needle connects mouth position provided with extension, extension is stretched into syringe needle and connects mouth inner space to avoid dead volume.
Again as shown in Figure 2,3 fins 6 are evenly distributed with along the external circumferential of inner cylinder 2, fin 6 is interior with outer barrel 1
Wall offsets, and the second plunger is deviateed axial direction during passage.
Rack 4 is provided between 2 adjacent fins 6 of the outside of inner cylinder 2, and thimble 5 is provided with the end of outer barrel 1；Thimble 5
It is arranged on one and is fixed in the sleeve of outer tube rear end and is ejected downwards by spring and offseted with rack 4, thimble 5 is supported to rack 4
The first plunger position keeps stable during recess.
Outer barrel 1 is transparent material, and outer barrel 1 is provided with scale, is measured with reference to the front end of the first plunger；Second plunger 3
Outside be provided with scale, measured with reference to the rear end of the first plunger.The metric unit of scale on outer barrel 1 and the tooth pitch of rack 6
Unanimously, you can by the direct reading of scale.
By the cooperation of wide range and small-range, two-stage metered shot device realizes the taking of degree of precision, notes sample metering, and
Multi-agent sample is combined extremely convenient when taking, noting sample.
Above description is the embodiment of the present invention, and each substantive content composition illustrated not to the present invention is limited
System, person of ordinary skill in the field makes an amendment or deformed to foregoing embodiment, without departing substantially from the essence of the present invention.
Claims (10)
1. a kind of two-stage metered shot device, it is characterised in that connect the outer barrel of mouth rear end opening, Yi Jiyu provided with syringe needle including front end
It is set in the middle part of the first plunger that the outer barrel matches, first plunger in hollow tubular composition and the outer barrel vertically
The inner cylinder of portion's connection；
Also include the second plunger mutually matched with the inner cylinder；First plunger is closed with the outer barrel and elapsed along axle,
Wide range is completed to take, note sample；Second plunger is closed with the inner cylinder and elapsed vertically, is completed small-range and is taken, notes sample.
2. two-stage metered shot device as claimed in claim 1, it is characterised in that the rear end of second plunger, which is provided with, is more than institute
The spacing handle of the internal diameter of inner cylinder is stated, second plunger is elapsed to bottom by spacing.
3. two-stage metered shot device as claimed in claim 2, it is characterised in that the length of second plunger and the inner cylinder
Match, second plunger is elapsed to bottom equal with first plunger, i.e., described first plunger and described second
Plunger elapses to bottom its front end and offseted with the outer barrel bottom interior wall.
4. the two-stage metered shot device as described in any bar in claim 1-3, it is characterised in that the first described plunger and institute
The front end for stating the second plunger is provided with elastic chock plug.
5. the two-stage metered shot device as described in any bar in claim 1-4, it is characterised in that the outside of the inner cylinder is provided with
Rack；And be provided with the end of the outer barrel by the thimble acted on to down spring；
The thimble offsets with the rack, first plunger thimble when without traction power is supported to the rack
First plunger is forced to be slid to the recess of the rack during non-recess, and the thimble supports steady during the extremely rack recess
It is fixed.
6. two-stage metered shot device as claimed in claim 5, it is characterised in that the outer barrel is transparent material, and described outer
Cylinder is provided with scale, is measured with reference to the front end of first plunger；
The outside of second plunger is provided with scale, is measured with reference to the rear end of first plunger.
7. the scale on two-stage metered shot device as claimed in claim 6, it is characterised in that the scale, the outer barrel, its
The tooth pitch of metric unit and the rack is proportional relation.
8. two-stage metered shot device as claimed in claim 5, it is characterised in that fin, institute are additionally provided with the outside of the inner cylinder
The inwall for stating fin and the outer barrel offsets, and makes second plunger during passage without departing from axial direction.
9. two-stage metered shot device as claimed in claim 8, it is characterised in that the fin, its quantity is 3, and along institute
The external circumferential for stating inner cylinder is uniformly distributed.
10. two-stage metered shot device as claimed in claim 9, it is characterised in that the rack is arranged on described in adjacent 2
Between fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570685.7A CN107179219A (en) | 2017-07-13 | 2017-07-13 | A kind of two-stage metered shot device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570685.7A CN107179219A (en) | 2017-07-13 | 2017-07-13 | A kind of two-stage metered shot device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107179219A true CN107179219A (en) | 2017-09-19 |
Family
ID=59837656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710570685.7A Pending CN107179219A (en) | 2017-07-13 | 2017-07-13 | A kind of two-stage metered shot device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107179219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204907A (en) * | 2017-12-29 | 2018-06-26 | 孙丽敏 | A kind of novel pharmacological experiment sampler |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583978A (en) * | 1983-01-23 | 1986-04-22 | Michael Porat | Syringe |
| US5354285A (en) * | 1991-11-29 | 1994-10-11 | Sergej Mikhailovich Masurik | Injection syringe |
| WO2008057976A2 (en) * | 2006-11-03 | 2008-05-15 | Avanca Medical Devices, Inc. | Multiple dose syringes |
| GB201112347D0 (en) * | 2011-07-18 | 2011-08-31 | Rajah Shantal | An improved syringe |
| CN103037921A (en) * | 2010-04-30 | 2013-04-10 | 拜耳药业股份公司 | Displacement Syringe |
| CN204619052U (en) * | 2015-01-30 | 2015-09-09 | 黎海纤 | For injecting two push rod syringes of high viscosity medicament |
| CN204666409U (en) * | 2015-06-01 | 2015-09-23 | 泰安弘海食品有限公司 | Import and export inspection sampler |
| US20160106928A1 (en) * | 2014-10-16 | 2016-04-21 | Neomed, Inc. | Multi-stage mixing syringe |
| CN105534710A (en) * | 2016-01-26 | 2016-05-04 | 安徽智博新材料科技有限公司 | Skin test solution preparation device and method for preparing skin test solution |
| CN207051040U (en) * | 2017-07-13 | 2018-02-27 | 海南聚能科技创新研究院有限公司 | A kind of two-stage metered shot device |
-
2017
- 2017-07-13 CN CN201710570685.7A patent/CN107179219A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583978A (en) * | 1983-01-23 | 1986-04-22 | Michael Porat | Syringe |
| US5354285A (en) * | 1991-11-29 | 1994-10-11 | Sergej Mikhailovich Masurik | Injection syringe |
| WO2008057976A2 (en) * | 2006-11-03 | 2008-05-15 | Avanca Medical Devices, Inc. | Multiple dose syringes |
| CN103037921A (en) * | 2010-04-30 | 2013-04-10 | 拜耳药业股份公司 | Displacement Syringe |
| GB201112347D0 (en) * | 2011-07-18 | 2011-08-31 | Rajah Shantal | An improved syringe |
| US20160106928A1 (en) * | 2014-10-16 | 2016-04-21 | Neomed, Inc. | Multi-stage mixing syringe |
| CN204619052U (en) * | 2015-01-30 | 2015-09-09 | 黎海纤 | For injecting two push rod syringes of high viscosity medicament |
| CN204666409U (en) * | 2015-06-01 | 2015-09-23 | 泰安弘海食品有限公司 | Import and export inspection sampler |
| CN105534710A (en) * | 2016-01-26 | 2016-05-04 | 安徽智博新材料科技有限公司 | Skin test solution preparation device and method for preparing skin test solution |
| CN207051040U (en) * | 2017-07-13 | 2018-02-27 | 海南聚能科技创新研究院有限公司 | A kind of two-stage metered shot device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204907A (en) * | 2017-12-29 | 2018-06-26 | 孙丽敏 | A kind of novel pharmacological experiment sampler |
| CN108204907B (en) * | 2017-12-29 | 2020-07-03 | 孙丽敏 | Sample extractor for pharmaceutical experiment |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170919 |