CN113406256B - Multifunctional sample processing lifting platform device - Google Patents
Multifunctional sample processing lifting platform device Download PDFInfo
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- CN113406256B CN113406256B CN202110626324.6A CN202110626324A CN113406256B CN 113406256 B CN113406256 B CN 113406256B CN 202110626324 A CN202110626324 A CN 202110626324A CN 113406256 B CN113406256 B CN 113406256B
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- 238000012545 processing Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000013519 translation Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000003760 magnetic stirring Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 25
- 239000007788 liquid Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012864 cross contamination Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001785 headspace extraction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000005418 spin wave Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001926 trapping method Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000005406 washing 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
- G01N30/24—Automatic injection systems
-
- 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
-
- 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
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- 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
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8804—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 automated systems
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 provides a multifunctional sample processing lifting platform device which is provided with a rack structure, a push rod mechanism and a multifunctional platform structure; the frame structure comprises a screw rod, a guide rail sliding block on the screw rod and a wedge-shaped block with a thin upper part and a thick lower part; the push rod mechanism comprises lifting arms fixed on two sides of the upper end of the guide rail sliding block, translation assemblies are slidably arranged in the lifting arms along the horizontal direction, the tail ends of the two translation assemblies are in contact with the wedge-shaped block by the inner side, and the head ends of the two translation assemblies horizontally extend out to the upper part of the multifunctional platform under the action of the elastic reset piece; the multifunctional platform comprises a bracket fixed at the lower end of the guide rail sliding block, and a sample platen is fixed on the bracket and can be used for placing a sample bottle. The invention has the advantages of high working efficiency, low failure rate, convenient cleaning of the sampling needle, and the like.
Description
Technical Field
The invention relates to a multifunctional sample processing lifting platform device, in particular to a multifunctional sample processing lifting platform with functions of sampling, heating, mixing, cleaning a sample injection needle and the like in a sample automatic sampler.
Background
With the increase of domestic detection demands, automation is rapidly developed and popularized in the sample detection process. Autoinjectors are more widely used as a means of automatically handling samples in sample testing. The purging and trapping method is used for measuring volatile or semi-volatile organic compounds, organic metal compounds and other pollutants in liquid or solid by combining with a gas chromatograph or a gas chromatograph mass spectrometer. Typically, an autosampler for handling such samples has a storage area adapted to hold a plurality of samples to be analyzed and a functional area for sample preparation. The robotic arm typically grips one of the sample vials and transfers it from the storage area to the preparation function area. Once transferred to the preparation function, the vial contents are subjected to the relevant operations of sampling, heating, mixing, needle washing, and the like, so that the gas chromatograph or the gas chromatograph-mass spectrometer can be used for analysis and measurement.
Autoinjectors typically use separate sampling modules to extract liquid and solid samples (e.g., soil). Liquid sampling typically involves extracting a known amount of liquid from a sample bottle provided to an autosampler sampling module, adding a standard to the sample, and transferring the sample to an analysis device, without the need to heat the liquid sample. Gas headspace extraction generally involves injecting a solvent (e.g., water) into a sample bottle containing a solid sample, heating the sample while stirring the sample, and purging the sample with a gas, which is transferred to an analytical device.
For liquid and solid samples, the prior art uses either two samples at the same location or two locations to treat samples of different properties separately. The former structure is simpler, uses multistage sample injection needle to carry out the processing of liquid sample and solid sample respectively, and its shortcoming is the easy cross contamination that produces, solid particle jam pipeline scheduling problem, simultaneously in cross treatment solid sample and liquid sample's in-process, because the processing of solid sample needs to carry out heating treatment, and liquid need not heat, so if former sample be the solid sample that needs heating, when latter sample is the liquid sample, need wait to heat the temperature and descend before can going on, has restricted continuity and the treatment efficiency of sample processing. The latter usually adopts the sampling of liquid sample in the storage area of the sample to be analyzed, the sampling needle is installed on the mechanical arm, there are long, the pipeline that samples is apt to remain, long-term movement apt to cause pipeline fatigue fracture, etc. problem; the solid sample adopts the mode of snatching to shift to the preparation region of soil sample, and the region of sampling needle can be shifted out to the position that usually needs to place the sample to put into the sample bottle seat with the sample bottle from the top, consequently need design corresponding lateral shifting mechanism, the structure is complicated, easy tired, mechanical failure scheduling problem appears.
Disclosure of Invention
The invention aims to provide a multifunctional sample treatment lifting platform device, in particular to an integrated device which is used for sweeping, capturing and automatically feeding samples, performing spacer puncture, sampling, heating, stirring, cleaning a sampling needle and automatically separating the sampling needle from a sample bottle.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a multi-functional sample treatment promotes platform device which characterized in that: the multifunctional platform comprises a frame structure, a push rod mechanism and a multifunctional platform structure;
the frame structure comprises a screw rod capable of actively rotating in the positive and negative directions, a guide rail sliding block driven by the screw rod to lift, and a wedge-shaped block which is fixedly installed and is thin at the upper part and thick at the lower part;
the push rod mechanism comprises two lifting arms which are fixed on two sides of the upper end of the guide rail sliding block and are oppositely arranged, a translation assembly is slidably arranged in each lifting arm along the horizontal direction, the tail ends of the two translation assemblies are in contact with the wedge-shaped block by the inner side, and the head end of the translation assembly has a movement trend of extending horizontally to the upper part of the multifunctional platform under the action of the elastic reset piece;
the multifunctional platform comprises a bracket fixed at the lower end of the guide rail sliding block, and a sample platen is fixed on the bracket and can be used for placing a sample bottle.
The multifunctional sample processing lifting platform device comprises: the sample platen is divided into a first sleeve and a second sleeve, the first sleeve is fixed on the sample platen through a heat insulation column, the second sleeve is directly fixed on the sample platen, and a conical hole at the bottom of the second sleeve is connected with a cleaning pipeline.
The multifunctional sample processing lifting platform device comprises: a heater and a sensor are fixed on the first sleeve.
The multifunctional sample processing lifting platform device comprises: the cleaning pipeline is characterized in that an O-shaped ring and a needle guide ring are arranged in a pipeline joint, the pipeline joint is screwed and connected with the conical hole through threads, and the conical hole, the O-shaped ring, the needle guide ring and the pipeline joint are in concentric matching relation.
The multifunctional sample processing lifting platform device comprises: and a magnetic stirring motor is also fixed on the sample platen, the output shaft of the magnetic stirring motor is connected with a magnetic rod, and the magnetic rod is arranged between the first sleeve and the second sleeve.
The multifunctional sample processing lifting platform device comprises: the translation assembly comprises a U-shaped frame and reciprocating push rods arranged at two ends of the U-shaped frame, and the two ends of the U-shaped frame penetrate through holes of two lifting arms and are in sliding connection with the lifting arms through linear bearings; the inner side of the middle part of the U-shaped frame is provided with a rolling bearing, and the wedge block penetrates through the inner side of the U-shaped frame and can be contacted with the rolling bearing.
The multifunctional sample processing lifting platform device comprises: the elastic reset piece is a tension spring, and two ends of the tension spring are fixedly connected with the lifting arm and the U-shaped frame respectively.
Compared with the prior multifunctional sample processing lifting platform device, the invention has the following advantages:
(1) The invention discloses a multifunctional sample processing lifting platform device, which solves the problem of low processing efficiency in the original mode.
(2) The invention solves the problem that the original mode has complex structure and is easy to cause mechanical failure.
(3) The invention solves the problems of easy residue and cross contamination in the prior experimental process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a frame mechanism of the present invention;
FIG. 3 is a schematic view of a push rod mechanism according to the present invention;
FIG. 4 is a structural view of the multifunctional platform according to the present invention;
FIG. 5 is a schematic view of the device in use with the sample vial and the sample needle operating under the action of the push rod mechanism;
FIG. 6 is a schematic view of the device in actual use with the sampling needle cleaned;
fig. 7 is a schematic view of the apparatus when magnetic stirring is performed in actual use.
Reference numerals illustrate: a 100 rack mechanism; 200 push rod mechanism; 300 a multi-functional platform structure; a 101 substrate; 102 a guide rail assembly; 103 linear motor assembly; 104 a motor frame; 105 motor shaft frames; 106 wedge blocks; 107 a slider; 108 screw rods; 201 lifting arm; 202 a linear bearing; 203U-shaped frames; 204 reciprocating push rods; 205 rolling bearings; 206 tension springs; 207 tension spring screws; 301 a bracket; 302 sample platen; 303 heat insulating columns; 304 a first sleeve; 305 heaters and sensors; 306 a magnetic stirring motor; 307 output shaft; 308 magnetic bar; 309 a second sleeve; 310 pipeline joints; 311O-ring; 312 needle lead-in ring; 1 a first sampling needle; 2 a second sampling needle; 3, sample bottle; 4 magnons.
Detailed Description
As shown in fig. 1, the present invention provides a multifunctional sample processing lifting platform device, which has a frame structure 100, a push rod mechanism 200 and a multifunctional platform structure 300.
The frame structure 100, referring to the composition diagram of the frame structure 100 of the present invention shown in fig. 2, is formed by taking a vertically arranged base plate 101 as a main body, a motor frame 104 and a motor shaft frame 105 are respectively installed at the upper part and the lower part of the base plate 101, the motor frame 104 is used for installing a linear motor assembly 103, the linear motor assembly 103 is provided with a screw rod 108 which directly goes out of the shaft downwards, a matched nut is arranged on the screw rod 108, the bottom end of the screw rod 108 is fixed on the motor shaft frame 105, a guide rail assembly 102 is vertically arranged and fixedly connected with the base plate 101, a guide rail sliding block 107 is matched on the guide rail assembly 102, and the guide rail sliding block 107 is fixedly connected with the nut of the screw rod 108, so that the guide rail assembly 102 can be driven by the linear motor assembly 103 to move up and down; a wedge 106 for engaging with the pusher mechanism 200 is fixed to the base plate 101;
referring to fig. 3, the push rod mechanism 200 of the present invention includes two lifting arms 201 installed on two opposite sides of the upper end of the guide rail slider 107, a linear bearing 205 is installed in a hole of each lifting arm 201, and two ends of a u-shaped frame 203 pass through the holes of the two lifting arms 201 and form a sliding connection with the lifting arms 201 through the linear bearings 205; a rolling bearing 205 is arranged on the inner side of the middle part of the U-shaped frame 203, and the wedge block 106 passes through the inner side of the U-shaped frame 203 and contacts with the rolling bearing 205; two ends of the U-shaped frame 203 are respectively provided with a horizontally extending reciprocating push rod 204 (a translation assembly is formed by the U-shaped frame 203 and the reciprocating push rod 204); the lifting device further comprises a tension spring 206, wherein two ends of the tension spring 206 are fixedly connected with the lifting arm 201 and the U-shaped frame 203 through tension spring screws 207 respectively; when the push rod mechanism 200 is positioned at a lower position (shown by a solid line part in fig. 5), the U-shaped frame 203 is contacted with a thicker part of the wedge block 106 to enable the reciprocating push rod 204 to retract, and when the push rod mechanism 200 is lifted to a higher position (shown by a broken line part in fig. 5), the U-shaped frame 203 is contacted with a thinner part of the wedge block 106 (until the U-shaped frame is completely separated from the contact) under the tensile force of the tension spring 206, and the reciprocating push rod 204 is gradually extended until the sample bottle 3 on the platform structure 300 is shielded; when the push rod mechanism 200 is lowered to the lower position again (as shown in the solid line part of fig. 5), the tension spring 206 is lengthened and the reciprocating push rod 204 is contracted due to the contact of the U-shaped frame 203 with the thicker part of the wedge block 106;
referring to fig. 4, a structural diagram of a multifunctional platform 300 of the present invention is shown, wherein a bracket 301 is fixed at the lower end of a rail slider 107; the sample platen 302 is fixed on the bracket 301, a first sleeve 304 and a second sleeve 309 are respectively arranged on the sample platen 302 in left and right directions, a heater and a sensor 305 are fixed on the first sleeve 304, and the first sleeve 304 is fixed on the sample platen 302 through a heat insulation column 303; the second sleeve 309 is directly fixed on the sample platen 302, the O-ring 311 and the needle guide ring 312 are installed in the pipeline joint 310, and the pipeline joint 310 is screwed with the conical hole at the bottom of the second sleeve 309 through threads (forming a cleaning pipeline); a magnetic stirring motor 306 is also fixed on the sample platen 302, and an output shaft 307 of the magnetic stirring motor 306 is connected with a magnetic rod 308, specifically, is fixedly connected with a circular hole on the midpoint of the magnetic rod 308.
Referring to fig. 5, in actual use, the sample bottle and the sampling needle are shown in the schematic illustration, and in conjunction with fig. 2 and 3, the sample injector transfers the sample bottle 3 to the first sleeve 304 (or the second sleeve 309) by the clamping jaw in the initial working position, the mechanical arm can penetrate into the gap between the first sampling needle 1 (or the second sampling needle 2) and the first sleeve 304 (or the second sleeve 309) and put into the sample bottle 3, the rolling bearing 205 contacts the wedge 106, the reciprocating push rod 204 is in the retreated state and does not block the space above the sample bottle 3, when the rack mechanism 100 is gradually lifted, the reciprocating push rod 204 is gradually moved in parallel due to the spring force of the tension spring 206 until the rolling bearing 205 is out of contact with the wedge 106 and the U-shaped frame 203 contacts the two end surfaces of the lifting arm 201, and the movement of the reciprocating push rod 204 due to the parallel motion is blocked above the sample bottle 3, the first sampling needle 1 (or the second sampling needle 2) pierces the spacer of the sample bottle 3 into the sample sampling position of the sample bottle 3, and the elastic body is sealed at the sample bottle 3 and the sample bottle position due to the spacer exists.
Further, referring to fig. 7, a schematic diagram of magnetic stirring in actual use is shown, when the sample is to be stirred, the magnetic stirring motor 306 rotates to drive the output shaft 307 and the magnetic rod 308 to rotate simultaneously, and at this time, the magnet 4 in the sample bottle 3 conducts and moves due to the relative magnetic force synchronously caused by the rotation of the magnetic rod 308, so as to accelerate the mixing of the sample.
After the sample is sampled, the frame mechanism 100 gradually descends, the reciprocating push rod 204 is blocked above the sample bottle 3, the spacer of the sample bottle 3 and the first sampling needle 1 or the second sampling needle 2 overcome friction force and gradually separate, the further rolling bearing 205 is contacted with the wedge block 106, and the reciprocating push rod 204 is in a retreated state until the frame mechanism 100 descends to the bottom of the structure.
Referring to fig. 6, in conjunction with fig. 4, a conical hole is further provided at the bottom of the second sleeve 309, which is in concentric engagement with the O-ring 311, the needle introduction ring 312 and the pipe connection 310, and when the frame mechanism 100 is lifted to the cleaning position, the second sampling needle 2 will form a sealing engagement with the O-ring 311, and the cavity in the needle introduction ring 312 and the pipe connection 310 is sealed due to the extrusion of the O-ring 311, so that the second sampling needle 2 can be cleaned by the cleaning liquid.
The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a multi-functional sample treatment promotes platform device which characterized in that: the multifunctional platform comprises a frame structure, a push rod mechanism and a multifunctional platform structure;
the frame structure comprises a screw rod capable of actively rotating in the positive and negative directions, a guide rail sliding block driven by the screw rod to lift, and a wedge-shaped block which is fixedly installed and is thin at the upper part and thick at the lower part;
the push rod mechanism comprises two lifting arms which are fixed on two sides of the upper end of the guide rail sliding block and are oppositely arranged, a translation assembly is slidably arranged in each lifting arm along the horizontal direction, the tail ends of the two translation assemblies are in contact with the wedge-shaped block by the inner side, and the head end of the translation assembly has a movement trend of extending horizontally to the upper part of the multifunctional platform under the action of the elastic reset piece; the translation assembly comprises a U-shaped frame and reciprocating push rods arranged at two ends of the U-shaped frame, the two ends of the U-shaped frame penetrate through holes of two lifting arms and form sliding connection with the lifting arms, and the wedge blocks penetrate through the inner sides of the U-shaped frame;
the multifunctional platform comprises a bracket fixed at the lower end of the guide rail sliding block, and a sample platen is fixed on the bracket and can be used for placing a sample bottle.
2. The multi-functional sample processing lifting platform device of claim 1, wherein: the sample platen is divided into a first sleeve and a second sleeve, the first sleeve is fixed on the sample platen through a heat insulation column, the second sleeve is directly fixed on the sample platen, and a conical hole at the bottom of the second sleeve is connected with a cleaning pipeline.
3. The multi-functional sample processing lifting platform device of claim 2, wherein: a heater and a sensor are fixed on the first sleeve.
4. The multi-functional sample processing lifting platform device of claim 2, wherein: the cleaning pipeline is characterized in that an O-shaped ring and a needle guide ring are arranged in a pipeline joint, the pipeline joint is screwed and connected with the conical hole through threads, and the conical hole, the O-shaped ring, the needle guide ring and the pipeline joint are in concentric matching relation.
5. The multi-functional sample processing lifting platform device of claim 2, wherein: and a magnetic stirring motor is also fixed on the sample platen, the output shaft of the magnetic stirring motor is connected with a magnetic rod, and the magnetic rod is arranged between the first sleeve and the second sleeve.
6. The multi-functional sample processing lifting platform device of claim 1, wherein: the two ends of the U-shaped frame are in sliding connection with the lifting arm through linear bearings; the inner side of the middle part of the U-shaped frame is provided with a rolling bearing, and the wedge-shaped block is contacted with the rolling bearing.
7. The multi-functional sample processing lifting platform device of claim 6, wherein: the elastic reset piece is a tension spring, and two ends of the tension spring are fixedly connected with the lifting arm and the U-shaped frame respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110626324.6A CN113406256B (en) | 2021-06-04 | 2021-06-04 | Multifunctional sample processing lifting platform device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626324.6A CN113406256B (en) | 2021-06-04 | 2021-06-04 | Multifunctional sample processing lifting platform device |
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| CN113406256A CN113406256A (en) | 2021-09-17 |
| CN113406256B true CN113406256B (en) | 2024-03-15 |
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