CN108051607A - A kind of chemical detection sampler - Google Patents
A kind of chemical detection sampler Download PDFInfo
- Publication number
- CN108051607A CN108051607A CN201711234817.5A CN201711234817A CN108051607A CN 108051607 A CN108051607 A CN 108051607A CN 201711234817 A CN201711234817 A CN 201711234817A CN 108051607 A CN108051607 A CN 108051607A
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- CN
- China
- Prior art keywords
- sample
- piston
- pedestal
- sliding panel
- block
- 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.)
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Classifications
-
- 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
- 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
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
Abstract
The present invention provides a kind of chemical detection sampler, including pedestal, riser, clamping device, elevating mechanism, driving plate, magnetic-adsorption block, magnet base, piston cylinder, piston rod, sample head；Riser is arranged on pedestal, clamping device is arranged on pedestal, sample bottle is arranged on clamping device, elevating mechanism is arranged on riser, magnet base is fixedly installed and controls magnetic force by magnetic switch, and driving plate is arranged at the lift side of elevating mechanism, and piston-rod end is arranged in driving plate and piston end is arranged in piston cylinder, magnetic-adsorption block is arranged at piston drum outer wall and is matched with magnet base, and sample head is arranged at the end of piston cylinder and is located at the surface of sample bottle and is communicated with piston cylinder cavity.The present invention can effectively avoid toxicity or corrosive sample while sampling amount is carried out and accurately controlled and human skin caused to damage in sampling.
Description
Technical field
The present invention relates to a kind of chemical reagent sampling techniques, particularly a kind of chemical detection sampler.
Background technology
When being detected to chemical reagent, generally by the way of sampling manually, that is, sampler is manually operated from sampling
Reagent is extracted out in bottle, the sampler generally used is suction pipe or needle tubing etc..But for some poisonous chemical substances or corrosivity
Stronger chemical substance easily occurs chemical substance using the method for traditional manual sampling and wanders to human body skin in operation
On skin (such as hand), certain damage can be generated to human skin, and if using expensive commercial Autosampler, due to it
Cost is higher, hence it is evident that without versatility；Furthermore traditional sampling mode is generally fixed sample bottle operation sampling on the other hand on the other hand
Device, operation are inconvenient, and are easy to cause sample bottle and are fallen or tilt the problem of flowing out sample, and manually sampling when to sample
Sampling amount size is extremely difficult to be accurately controlled；Same sampler cannot be used when being sampled due to general various sample, is adopted
With disposable sampler, such as needle tubing when can cause material very big waste.
The content of the invention
It, can while to sampling amount accurately control it is an object of the invention to provide a kind of chemical detection sampler
Toxicity or corrosive sample is effectively avoided to cause to damage to human skin in sampling.
Realize the object of the invention technical solution be：A kind of chemical detection sampler, including pedestal, riser, clamping machine
Structure, elevating mechanism, driving plate, magnetic-adsorption block, magnet base, piston cylinder, piston rod, sample head；Riser is arranged on pedestal, folder
It holds mechanism to be arranged on pedestal, sample bottle is arranged on clamping device, and elevating mechanism is arranged on riser, magnet base fixed setting
And magnetic force is controlled by magnetic switch, driving plate is arranged at the lift side of elevating mechanism, piston-rod end be arranged in driving plate and
Piston end is arranged in piston cylinder, and magnetic-adsorption block is arranged at piston drum outer wall and is matched with magnet base, and sample head is arranged at work
The end of plug tube and positioned at sample bottle surface and communicated with piston cylinder cavity.
Using above-mentioned sampler, clamping device includes fixed block, movable block, limiting stand, the first spring；Fixed block is fixed on
Pedestal upper surface, movable block are placed in pedestal upper surface and can be closer or far from fixed blocks, fixed block and the opposite end of movable block
Face sets arc groove, and limiting stand is fixed on pedestal upper surface, and the both ends of the first spring are separately positioned on movable block and limiting stand.
Using above-mentioned sampler, the elevating mechanism includes slideway, sliding panel, sliding block, leading screw；Sliding panel is arranged at riser
On, the magnet base is fixed on sliding panel, and slideway is vertical to be arranged on sliding panel, and leading screw is set by the way that clutch shaft bearing is vertical
Be placed on sliding panel and rotate under the effect of external force, sliding block be connected with threads of lead screw and under the driving of leading screw vertically
It is mobile.
Using above-mentioned sampler, external force is provided from manual power component to leading screw, the manual power component include babinet,
Handwheel, driving shaft, drive bevel gear, driven wheel of differential；Babinet is fixed on sliding panel lower end and upper surface and sets and passed through for leading screw
Through hole, driven wheel of differential is arranged in babinet and is fixedly installed in leading screw end, and drive bevel gear is engaged with driven wheel of differential
And drive bevel gear is fixedly installed in driving shaft one end, driving shaft is arranged at by second bearing on babinet and the other end is arranged at
On handwheel outside babinet.
Using above-mentioned sampler, driving plate sets card slot, and piston-rod end is through card slot and by being located above and below driving plate
The upper limit plate and lower limiting board of both sides are fixed；The upper limit plate and lower limiting board are threaded through hole, and last with piston rod
Hold external screw thread matching.
Using above-mentioned sampler, scale marker is provided on sample head.
Using above-mentioned sampler, which also sets up position-limit mechanism, and the position-limit mechanism includes being arranged on sliding panel one
The stripper plate of side promotes stripper plate to the second spring moved close to sliding panel one side with stripper plate one side is arranged at.
Compared with prior art, the present invention it has the following advantages：(1) the configuration of the present invention is simple, can by clamping device
Sample bottle is fixed, avoids rocking, tilt or toppling over for sample bottle in sampling process, during sampling, manually controls hand
Dynamic Power Component drives driving plate and then drives piston rod movement, enters the sample in sample bottle by negative pressure replaceable
In sample head, sample, which enters after sample head, can quickly remove sampling mechanism by adjusting magnetic switch and move sample to check bit
It puts, entire sampling process is simple to operate, and during sampling, operating personnel does not have to contact directly sample bottle and sampling mechanism, can
The toxic or sample that is corrosive effectively is avoided to cause to damage to human skin in misoperation；(2) in sampling process of the present invention,
Sample bottle and sampling structure are fixed, the movement of piston are controlled by the handwheel for shaking one side, when sample reaches institute in sample head
When needing scale, stop shaking handwheel, whole process rapid operation, and sample sampling amount can be accurately controlled；
(3) sampling mechanism of the invention dismounting is efficient and convenient, and its initial position can quickly be adjusted by the position-limit mechanism of one side,
Suitable for the sampling operation of sample in different size bottle；(4) present invention is when in use if between being not desired to various sample mutually
Mixing, it is only necessary to replace simple sample head, and to components such as piston cylinders without needing to change, can permanence use, therefore not
The transition of material can be caused to waste.
With reference to Figure of description, the invention will be further described.
Description of the drawings
Fig. 1 is overall setup schematic diagram of the present invention.
Fig. 2 is present invention driving plate structure schematic diagram.
Fig. 3 is clamping device structure diagram of the present invention.
Fig. 4 is elevating mechanism structure diagram of the present invention.
Reference numeral is respectively with corresponding component names wherein shown in attached drawing：
1st, pedestal；2nd, clamping device；3rd, sample bottle；4th, riser；5th, slideway；6th, magnet base；7th, magnetic switch；8th, the second bullet
Spring；9th, magnetic-adsorption block；10th, stripper plate；11st, driving plate；12nd, upper limit plate；13rd, lower limiting board；14th, piston cylinder；15th, piston
Bar；16th, piston；17th, sample head；18th, card slot；19th, fixed block；20th, movable block；21st, arc groove；22nd, the first spring；23rd, limit
Position platform；24th, leading screw；25th, slide；26th, sliding block；27th, sliding panel；28th, gear housing；29th, clutch shaft bearing；30th, driven wheel of differential；
31st, second bearing；33rd, driving shaft；34th, drive bevel gear.
Specific embodiment
With reference to Fig. 1~4, a kind of chemical detection sampler, including pedestal 1 and the perpendicular riser 4 of pedestal 1 and sampling
Mechanism is provided with to clamp the clamping device 2 of sample bottle 3 on the pedestal 1, slidable liter is provided on the riser 4
Descending mechanism and the position-limit mechanism for fixing elevating mechanism, sampler further include sampling mechanism.
The elevating mechanism includes sliding panel 27, vertical two slideways 5 of setting on sliding panel 27, on the sliding panel 27
The leading screw 24 for being provided with slidable sliding block 26 and sliding block 26 being driven to move, thread fitting between the leading screw 24 and sliding block 26,
The manual power component that driving leading screw 24 rotates is provided in 24 one end of leading screw, sliding block 26 is under the driving of leading screw 24 in vertical side
It is moved up and down upwards along slideway 5.
The position-limit mechanism includes being arranged on the stripper plate 10 of 27 one side of sliding panel and is arranged at the promotion of 10 one side of stripper plate
The second spring 8 that stripper plate 10 is moved to close 27 one side of sliding panel.
Driving plate 11 is fixed on the sliding block 26, the card slot 18 with opening is provided in driving plate 11.
The sampling mechanism includes piston cylinder 14, is provided with piston 16 in the piston cylinder 14, the piston 16 is by setting
The piston rod 15 put in piston cylinder 14 drives, and upper limit plate 12 and lower limiting board 13, piston are fixed at 15 top of piston rod
Bar 15 can be inserted by the opening of 18 one side of card slot in card slot 18, and the upper limit plate 12 after insertion is located at 11 top of driving plate, under
Limiting plate 13 is located at 11 lower part of driving plate, and piston rod 15 can be with driving plate 11 under the action of upper limit plate 12 and lower limiting board 13
Elevating movement is provided with magnetic-adsorption block 9 in 14 one side of piston cylinder, is provided with to be attracted magnetic force in 27 one side of sliding panel
The magnet base 6 of Attraction block 9 is provided with the magnetic switch 7 for controlling its magnetic force, 14 bottom of the piston cylinder peace on the magnet base 6
Equipped with replaceable sample first 17,14 inside of piston cylinder is provided with scale marker with being communicated inside sample first 17 on sample first 17.
With reference to Fig. 1, the pedestal 1 in the present invention is for when in use placing this sampler on the table, riser 4 and pedestal
L-shaped between 1 to be vertically arranged, clamping device 2 is for clamping sample bottle 3, to consolidate when extracting sample from sample bottle 3
Surely sample bottle 3 is lived, toxic or corrosive sample when avoiding the occurrence of improper operation or accident in sample bottle 3 causes to damage to human body
Wound.The present invention sets up separately on 4 top of riser is equipped with slideway 5, and slideway 5 is mainly used for adjusting the position of elevating mechanism in the height direction
It puts, ensures that sample first 17 can touch the sample in sample bottle 3, after elevating mechanism height and position is adjusted, one can be passed through
Elevating mechanism is fixed in the position-limit mechanism of side.With reference to Fig. 4, elevating mechanism of the invention is mainly used for driving piston rod 15
Elevating movement makes the sample in sample bottle 3 be drawn into sample first 17, and elevating mechanism is feed screw nut formula structure, passes through leading screw 24
Rotation band movable slider 26 moved in a straight line on slide 25, and then pass through sliding block 26 drive driving plate 11 elevating movement, drive
As shown in Figure 2, piston rod 15 is inserted into card slot 18 to the notch set on movable plate 11 from outside, that is, open side of card slot 18
It is interior, while piston cylinder 14 is attracted block 9 by magnet and the cooperation of magnet base 6 is fixed on magnet base 6, when driving plate 11 lifts
When, you can by 15 elevating movement of mating band piston bar of upper limit plate 12 or lower limiting board 13 and driving plate 11, so that
Sample in sample bottle 3 is drawn into piston cylinder 14, and as shown in Figure 1,14 bottom of piston cylinder of the invention passes through screw thread and examination
Sample first 17 coordinates, that is, can guarantee the sealing effect between piston cylinder 14 and sample first 17, but can guarantee sample first 17 it is quick more
It changes.
With reference to Fig. 3, clamping device of the invention includes fixed block 19 and movable block 20, and fixed block 19 is fixed on pedestal 1,
Movable block 20 can slide on pedestal 1, and 1 one side of pedestal is provided with limiting stand 23, is provided between limiting stand 23 and movable block 20
First spring 22 is provided with matched arc groove 21 on fixed block 19 and movable block 20.First spring 22 is mainly used for pushing away
Dynamic movable block 20 is moved to 19 direction of fixed block, and movable block 20 and fixed block 19 is made to coordinate the clamping for completing sample bottle 3, sample bottle
3 can be clamped in by firm in 19 corresponding arc groove 21 of movable block 20 and fixed block.When needing replacing or remove sample bottle 3
When, pushing out movable block 20 makes it be separated with fixed block 19.The structure operation is simple, can complete the fast of sample bottle 3
Speed clamping and replacement.
With reference to Fig. 1, position-limit mechanism of the invention includes the stripper plate 10 for being arranged on 27 one side of sliding panel, 10 one side of stripper plate
The second spring 8 that stripper plate 10 is promoted to be moved to close 27 one side of sliding panel is provided with, sliding panel 27 is in the effect of stripper plate 10
It can be fixed in slideway 5 under power.Stripper plate 10 is arranged on 5 interior side of slideway, and the first spring 8 is used to that stripper plate 10 to be promoted to hold out against
Sliding panel 27 realizes the fixation of position-limit mechanism, when needing to adjust position of the position-limit mechanism in short transverse, only needs outside layback
Dynamic stripper plate 10 unclamps stripper plate 10 under the effect of second spring 8, and stripper plate 10 holds out against sliding panel 27 automatically.The structure
It is simple and quick, by and its simple structure complete the quick adjustment of position-limit mechanism height.
With reference to Fig. 4, leading screw of the invention rotation manually drives, and wherein manual power component includes gear housing 28,
Intermeshing driven wheel of differential 30 and drive bevel gear 34 are provided in gear housing 28, driven wheel of differential 30 is fixed on leading screw
On 24, driving shaft 33 is installed on gear housing 28, drive bevel gear 34 is mounted on driving shaft 33, and 33 outer end of driving shaft is stretched out
Gear housing 28 is simultaneously equipped with handwheel 32.It grabs and rotates handwheel 32, driven by drive bevel gear 34 and the cooperation of driven wheel of differential 30
The rotation of leading screw 24, wherein setting clutch shaft bearing 29, the second bearing 31 at driving shaft 33, clutch shaft bearing 29 at 24 both ends of leading screw
It can increase the flexibility that leading screw 24 and driving shaft 33 rotate with second bearing 31.Wherein, in the present invention by drive bevel gear
34 numbers of teeth are set smaller than driven wheel of differential 30, so as to accurately be controlled the lifting of piston rod 15.
The application method of the present invention is as follows：
First by the sample bottle 3 equipped with sample by gripper mechanism grips on pedestal 1, then by clean sample first 17
14 bottom of piston cylinder is tightened on, while the opening of piston rod 15 from card slot 18 is inserted into card slot 18, and opens magnetic force and opens
7 are closed, magnet is made to be attracted block 9 and is adsorbed onto on magnet base 6, the fixation of piston cylinder 14 is completed, then adjusts elevating mechanism height and position,
Ensure that first 17 bottom of sample can touch the sample in sample bottle 3, after fixing elevating mechanism, work is made by rotation hand wheel 32
Stopper rod 15 moves upwards, and as piston rod 15 moves, sample is progressed into sample first 17, ought be taken by observing scale marker
After sample needed for foot, magnetic switch 7 is closed, piston cylinder 14 is removed together with sample first 17, then by the sample in sample first 17
It is pressed into position to be detected, during lower sub-sampling, only needs to change sample first 17.
Claims (9)
1. a kind of chemical detection sampler, which is characterized in that including pedestal (1), riser (4), clamping device (2), elevator
Structure, driving plate (11), magnetic-adsorption block (9), magnet base (6), piston cylinder (14), piston rod (15), sample head (17)；Wherein
Riser (4) is arranged on pedestal (1),
Clamping device (2) is arranged on pedestal (1),
Sample bottle (3) is arranged on clamping device (2),
Elevating mechanism is arranged on riser (4),
Magnet base (6) is fixedly installed and controls magnetic force by magnetic switch (7),
Driving plate (11) is arranged at the lift side of elevating mechanism,
Piston rod (15) end is arranged in driving plate (11) and piston end is arranged in piston cylinder (14),
Magnetic-adsorption block (9) is arranged at piston cylinder (14) outer wall and is matched with magnet base (6),
Sample head (17) be arranged at the end of piston cylinder (14) and positioned at sample bottle (3) surface and with piston cylinder (14) cavity
It communicates.
2. sampler according to claim 1, which is characterized in that the clamping device (2) includes fixed block (19), activity
Block (20), limiting stand (23), the first spring (22)；Wherein
Fixed block (19) is fixed on pedestal (1) upper surface,
Movable block (20) be placed in pedestal (1) upper surface and can closer or far from fixed block (20),
Fixed block (19) and the opposite end face of movable block (20) set arc groove (21),
Limiting stand (23) is fixed on pedestal (1) upper surface,
The both ends of first spring (22) are separately positioned on movable block (20) and limiting stand (23).
3. sampler according to claim 1, which is characterized in that the elevating mechanism includes slideway (5), sliding panel
(27), sliding block (26), leading screw (24)；Wherein
Sliding panel (27) is arranged on riser (4), and the magnet base (6) is fixed on sliding panel (27),
Slideway (5) is vertical to be arranged on sliding panel (27),
Leading screw (24) is arranged on sliding panel (27) and rotates under the effect of external force by the way that clutch shaft bearing (29) is vertical,
Sliding block (26) is threadedly coupled with leading screw (24) and is vertically moved under the driving of leading screw (24).
4. sampler according to claim 3, which is characterized in that external force is provided from manual power component to leading screw (24),
The manual power component includes babinet (28), handwheel (32), driving shaft (33), drive bevel gear (34), driven wheel of differential
(30)；Wherein
Babinet (28) is fixed on sliding panel (27) lower end and upper surface and sets the through hole passed through for leading screw (24),
Driven wheel of differential (30) is arranged in babinet (28) and is fixedly installed in leading screw (24) end,
Drive bevel gear (34) is engaged with driven wheel of differential (30) and drive bevel gear (34) is fixedly installed in driving shaft (33) one
End,
Driving shaft (33) is arranged at by second bearing (31) on babinet (28) and the other end is arranged at the handwheel of babinet (28) outside
(32) on.
5. sampler according to claim 1, which is characterized in that driving plate (11) sets card slot (18), piston rod (15)
Through card slot (18) and by being located at driving plate (11), the upper limit plate (12) of both sides and lower limiting board (13) are fixed up and down for end；
The upper limit plate (12) and lower limiting board (13) are threaded through hole, and are matched with piston rod (15) end external screw thread.
6. sampler according to claim 1, which is characterized in that sample head is provided with scale marker on (17).
7. sampler according to claim 1, which is characterized in that the sampler also sets up position-limit mechanism, the position restrainer
Structure include be arranged on sliding panel (27) one side stripper plate (10) and be arranged at stripper plate (10) one side promotion stripper plate (10) to
Close to the second spring (8) of sliding panel (27) one side movement.
8. sampler according to claim 4, which is characterized in that drive bevel gear (34) number of teeth is less than from mantle tooth
It takes turns (30).
9. sampler according to claim 1, which is characterized in that screw thread between the sample head (17) and piston cylinder (14)
Cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711234817.5A CN108051607A (en) | 2017-11-30 | 2017-11-30 | A kind of chemical detection sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711234817.5A CN108051607A (en) | 2017-11-30 | 2017-11-30 | A kind of chemical detection sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108051607A true CN108051607A (en) | 2018-05-18 |
Family
ID=62121635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711234817.5A Pending CN108051607A (en) | 2017-11-30 | 2017-11-30 | A kind of chemical detection sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108051607A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115552A (en) * | 2018-08-23 | 2019-01-01 | 沈阳奥吉娜药业有限公司 | Sampling folder |
| CN109116045A (en) * | 2018-08-23 | 2019-01-01 | 沈阳奥吉娜药业有限公司 | Sampling assemble |
| CN112362403A (en) * | 2020-11-06 | 2021-02-12 | 衡阳市凯信化工试剂股份有限公司 | Quality inspection sampling device for chemical reagent production |
| CN112881456A (en) * | 2021-01-18 | 2021-06-01 | 重庆医药高等专科学校 | Medicine melting point instrument |
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| JPH07146219A (en) * | 1993-11-22 | 1995-06-06 | Shimadzu Corp | Automatic sampler |
| CN202368431U (en) * | 2011-11-29 | 2012-08-08 | 杨仁对 | Portable vehicle heating device |
| CN102759483A (en) * | 2012-06-29 | 2012-10-31 | 宁波福士汽车部件有限公司 | Automobile pipe pressure test device |
| CN103808272A (en) * | 2012-11-13 | 2014-05-21 | 朱宝华 | Height indicator |
| CN103920548A (en) * | 2014-04-23 | 2014-07-16 | 张建明 | Quantitative liquid transferring device |
| CN105665061A (en) * | 2016-03-25 | 2016-06-15 | 王萍 | Portable foldable test tube clamp |
| CN205374489U (en) * | 2016-03-04 | 2016-07-06 | 滨州职业学院 | Automatic move liquid application of sample device |
| CN106769199A (en) * | 2016-12-08 | 2017-05-31 | 杨田文 | A kind of quick water fetching device of water quality detection |
| CN107132368A (en) * | 2017-07-03 | 2017-09-05 | 陆思远 | A kind of new liquid-transfering device |
-
2017
- 2017-11-30 CN CN201711234817.5A patent/CN108051607A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07146219A (en) * | 1993-11-22 | 1995-06-06 | Shimadzu Corp | Automatic sampler |
| CN202368431U (en) * | 2011-11-29 | 2012-08-08 | 杨仁对 | Portable vehicle heating device |
| CN102759483A (en) * | 2012-06-29 | 2012-10-31 | 宁波福士汽车部件有限公司 | Automobile pipe pressure test device |
| CN103808272A (en) * | 2012-11-13 | 2014-05-21 | 朱宝华 | Height indicator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115552A (en) * | 2018-08-23 | 2019-01-01 | 沈阳奥吉娜药业有限公司 | Sampling folder |
| CN109116045A (en) * | 2018-08-23 | 2019-01-01 | 沈阳奥吉娜药业有限公司 | Sampling assemble |
| CN109115552B (en) * | 2018-08-23 | 2024-01-23 | 沈阳奥吉娜药业有限公司 | Sampling clamp |
| CN112362403A (en) * | 2020-11-06 | 2021-02-12 | 衡阳市凯信化工试剂股份有限公司 | Quality inspection sampling device for chemical reagent production |
| CN112881456A (en) * | 2021-01-18 | 2021-06-01 | 重庆医药高等专科学校 | Medicine melting point instrument |
| CN112881456B (en) * | 2021-01-18 | 2023-08-18 | 重庆医药高等专科学校 | Medicine melting point instrument |
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Application publication date: 20180518 |