CN117074593B - Chromatograph is with autoinjector - Google Patents
Chromatograph is with autoinjector Download PDFInfo
- Publication number
- CN117074593B CN117074593B CN202311331316.4A CN202311331316A CN117074593B CN 117074593 B CN117074593 B CN 117074593B CN 202311331316 A CN202311331316 A CN 202311331316A CN 117074593 B CN117074593 B CN 117074593B
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- protection casing
- sampling
- sample
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- 229940090047 auto-injector Drugs 0.000 title description 3
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 230000004224 protection Effects 0.000 claims description 59
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 241000826860 Trapezium Species 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 19
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 21
- 230000002349 favourable effect Effects 0.000 description 17
- 238000007789 sealing Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000005574 cross-species transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000013375 chromatographic separation Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000009979 protective mechanism Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance 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
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- 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 relates to the technical field of sampling detection, in particular to an automatic sampler for a chromatograph, which comprises a sampling mechanism, wherein the sampling mechanism comprises a stand column, the center of a machine body is detachably connected with the stand column, the top of the stand column is provided with a support column, the support column is provided with a cross beam, the top of one end of the cross beam is detachably connected with a second motor, the bottom of one end of the cross beam is rotationally connected with a mounting plate, an output shaft of the second motor extends to the inside of the cross beam and is connected with the center of the top of the mounting plate, the center of the bottom of the mounting plate is detachably connected with a cylinder, the bottom of the cylinder is provided with a placing plate, the mounting plate and the placing plate are in oval structures, the two ends of the bottom of the placing plate are provided with connecting seats, and the bottoms of the two connecting seats are in clamping connection with sampling needles; through placing mechanism and sampling mechanism cooperation, do benefit to the sample to a plurality of sample pipes to can two synchronous samplings, cleaning work when conveniently taking a sample simultaneously.
Description
Technical Field
The invention relates to the technical field of sampling detection, in particular to an automatic sampler for a chromatograph.
Background
The chromatograph is equipment for chromatographic separation analysis, comprises a sample injection system, a detection system, a recording and data processing system and the like, has the characteristics of high stability, sensitivity, versatility, automation degree and the like, and is also divided into a gas chromatograph, a liquid chromatograph, a gel chromatograph and the like according to different detection objects, and is widely used for chemical products.
However, when traditional chromatograph is taking a sample, most all is through artifical injection material loading, so complex operation, and the time consuming and labor consuming that makes a round trip to reload, inefficiency to need wash the pipeline when changing the sample, can't carry out the material loading detection work when wasing, consume a large amount of time, inconvenient simultaneously carries out simultaneous sampling detection to two samples.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automatic sampler for chromatograph.
The technical scheme adopted for solving the technical problems is as follows: an autosampler for a chromatograph, comprising:
a body;
the machine body is provided with a sampling mechanism, the sampling mechanism comprises a stand column, the center of the machine body is detachably connected with the stand column, the top of the stand column is provided with a support column, the support column is provided with a cross beam, the top of one end of the cross beam is detachably connected with a second motor, the bottom of one end of the cross beam is rotationally connected with a mounting plate, an output shaft of the second motor extends to the inside of the cross beam and is connected with the center of the top of the mounting plate, the center of the bottom of the mounting plate is detachably connected with a cylinder, the bottom of the cylinder is provided with a placing plate, the mounting plate and the placing plate are of oval structures, the two ends of the bottom of the placing plate are provided with connecting seats, and the bottoms of the two connecting seats are connected with sampling needles in a clamping manner;
the placing mechanism is arranged on the machine body;
the auxiliary mechanism is arranged on the sampling mechanism.
Specifically, the auxiliary mechanism comprises fixing rods, fixing rods are fixedly connected to two ends of the bottom of the mounting plate, guide rods are mounted at two ends of the top of the placement plate, two tops of the guide rods are in sliding connection with the interiors of the two fixing rods through reset springs, and the guide rods are of a T-shaped structure.
Specifically, two perpendicular fixedly connected with three bracing pieces respectively on the connecting seat, three install the sliding sleeve on the bracing piece, the sliding sleeve passes through extension spring and bracing piece sliding connection, two sliding connection has the rubber pad of annular structure on the sample needle, three the sliding sleeve bottom is connected with rubber pad top edge is perpendicular respectively.
Specifically, placing the mechanism including placing the dish, the placing the dish is installed at the organism top, place the dish bottom and install and change the cover, place the dish and rotate through changeing cover and organism and stand and be connected, place a set top side edge department and be equipped with a plurality of standing grooves and the holding tank that are annular equidistance and distribute, change the cover bottom outside and install the second gear, the first motor is installed to the organism bottom inboard, install first gear on the first motor, first gear and second gear engagement.
Specifically, install wiper mechanism on the placing mechanism, wiper mechanism includes the conveyer trough, the inside annular conveyer trough that is equipped with of placing the dish, the conveyer trough communicates with the tank bottom through a plurality of spread grooves, one of them the spread groove runs through in the conveyer trough and extends to the placing the dish outside, annular seal cover is installed to spread groove bottom lateral wall, annular structure's sealing washer is installed at the organism top, seal cover bottom is contradicted with the sealing washer, the inside one end of organism is equipped with the guide slot, guide slot one end runs through in sealing washer and is connected with the tank bottom portion of spread groove, the connecting pipe is installed in the organism outside, connecting pipe one end extends to inside the guide slot.
Specifically, install fixture on the placing mechanism, fixture includes the lug, stand lateral wall fixedly connected with lug, the lug is hemispherical structure, place a plurality of roof that are annular equidistance and distribute of dish internally mounted, be equipped with the logical groove that runs through on the roof, the holding tank is located logical groove center department, the roof passes through compression spring and places the inside sliding connection of dish, roof one end is arc structure, roof one end extends to the place the board outside and contradicts with the stand, the rubber piece is installed to the roof other end, rubber piece one side extends to inside the standing groove.
Specifically, the rubber block is of a trapezoid structure, and a buffer spring is connected between the rubber block and the top plate.
Specifically, install protection machanism on the organism, protection machanism includes the protection casing, install the protection casing on the organism, the protection casing is inside hollow trapezium structure, the connecting axle is installed to the protection casing both sides, the protection casing is installed to protection casing one side, the protection casing both sides are connected with the protection casing rotation through the connecting axle, the handle is installed to protection casing one side.
Specifically, the baffle is installed at the protection casing top, baffle one end is through a plurality of conflict springs and the inboard sliding connection in protection casing top, the baffle other end rotates and is connected with two guide pulleys, the guide pulley is contradicted with the shield inboard.
The beneficial effects of the invention are as follows:
(1) According to the automatic sampler for the chromatograph, the placement mechanism is beneficial to circularly distributing and placing a plurality of sample tubes and cleaning liquid, the sampling mechanism is convenient to sample sequentially, the pipeline is cleaned in time after the sampling is convenient to operate, the efficiency is high, the sample tubes on the placement mechanism can be inserted and sampled under the action of the sampling mechanism, the two sampling tubes can be sampled simultaneously, the sampling of one needle tube is convenient, the cleaning and the switching operation are performed in turn, the guiding and positioning effects are achieved through the matching installation of the auxiliary mechanism and the sampling mechanism, the interference stabilizing and protecting effects are achieved between the sampling mechanism and the sample tubes during the sampling, and the stability during the sampling is improved.
(2) According to the automatic sampler for the chromatograph, the cleaning mechanism is arranged, so that filling of cleaning liquid on the placing mechanism is facilitated, the operation is convenient, the clamping mechanism is driven to clamp a designated sample tube in an abutting mode through the rotating position of the placing mechanism, the sample tube cannot be loosened to affect sampling, shielding protection of the placing mechanism and the sampling mechanism is facilitated under the action of the protection mechanism, and feeding and discharging work is facilitated through rotation of the protection mechanism.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram showing the overall structure of a preferred embodiment of an autoinjector for chromatograph according to the present invention;
FIG. 2 is a schematic diagram of a connection structure between a shield and a housing according to the present invention;
FIG. 3 is a schematic view of a connection structure between a baffle and a contact spring according to the present invention;
FIG. 4 is a schematic view of a connection structure between a tray and a body according to the present invention;
FIG. 5 is a schematic view of the connection structure of the cylinder and the cross beam of the present invention;
FIG. 6 is an enlarged schematic view of the portion A shown in FIG. 5;
FIG. 7 is a schematic view of a connection structure of a fixing rod and a guide rod according to the present invention;
FIG. 8 is a schematic view of a connection structure between a support rod and a sliding sleeve according to the present invention;
FIG. 9 is a schematic view of a connection structure between a column and a body according to the present invention;
FIG. 10 is an enlarged schematic view of the B-section structure shown in FIG. 9;
fig. 11 is a schematic structural view of a top plate of the present invention.
In the figure: 1. a body; 2. a placement mechanism; 201. placing a tray; 202. a storage tank; 203. a placement groove; 204. a first motor; 205. a first gear; 206. a rotating sleeve; 207. a second gear; 3. a sampling mechanism; 301. a column; 302. a support column; 303. a cross beam; 304. a second motor; 305. a mounting plate; 306. a cylinder; 307. placing a plate; 308. a sampling needle; 309. a connecting seat; 4. an auxiliary mechanism; 401. a fixed rod; 402. a guide rod; 403. a support rod; 404. a sliding sleeve; 405. a rubber pad; 406. a return spring; 407. a telescopic spring; 5. a cleaning mechanism; 501. a connecting pipe; 502. a seal ring; 503. a guide groove; 504. sealing sleeve; 505. a conveying trough; 506. a connecting groove; 6. a clamping mechanism; 601. a bump; 602. a top plate; 603. a compression spring; 604. a through groove; 605. a buffer spring; 606. a rubber block; 7. a protective mechanism; 701. a protective cover; 702. a connecting shaft; 703. a protective cover; 704. a baffle; 705. a handle; 706. a guide wheel; 707. against the spring.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 11, the automatic sampler for chromatograph of the present invention comprises a machine body 1, wherein a sampling mechanism 3 is installed on the machine body 1, a placement mechanism 2 is installed on the machine body 1, an auxiliary mechanism 4 is installed on the sampling mechanism 3, a cleaning mechanism 5 is installed on the placement mechanism 2, a clamping mechanism 6 is installed on the placement mechanism 2, and a protection mechanism 7 is installed on the machine body 1.
Specifically, the sampling mechanism 3 includes stand 301, stand 301 is connected with in removable in organism 1 center department, stand 301 installs support column 302 in the top, install crossbeam 303 on the support column 302, crossbeam 303 one end top is dismantled and is connected with second motor 304, crossbeam 303 one end bottom rotates and is connected with mounting panel 305, second motor 304 output shaft extends to the inside and mounting panel 305 top center department of being connected with cylinder 306, cylinder 306 bottom is installed and is placed board 307, mounting panel 305 and place board 307 are oval structure, place board 307 bottom both ends and install connecting seat 309, two connecting seat 309 bottom block is connected with sample needle 308, is favorable to under the effect of stand 301 to support the installation to support column 302, thereby realize to the connection of crossbeam 303 under the effect of crossbeam 303 conveniently to mounting panel 305 is connected, through the drive of second motor 304 realizes the rotation of mounting panel 304, through the installation of mounting panel 306 is favorable to placing board 307, thereby can also realize to sample needle 308 is more convenient to sample 308 is connected to two sample needle 308, thereby can realize that two sample 308 can be more can be realized to sample 308 through the sample needle 308 is simultaneously to the sample 308 is more can be driven to two sample 308 under the effect needle 308.
Specifically, the auxiliary mechanism 4 includes the dead lever 401, mounting panel 305 bottom both ends fixedly connected with dead lever 401, place board 307 top both ends and install guide arm 402, two guide arm 402 top is through reset spring 406 and two inside sliding connection of dead lever 401, guide arm 402 is "T" shape structure, through two guide arm 402 with two the inside sliding connection of dead lever 401 is favorable to right mounting panel 305 with place board 307 plays the effect of location direction, makes place board 307 slide smoothly under the effect of cylinder 306, through reset spring 406's installation is favorable to after the slip place board 307 can be timely reset, plays safety protection's effect.
Specifically, two perpendicular fixedly connected with three bracing piece 403 respectively on the connecting seat 309, three install the sliding sleeve 404 on the bracing piece 403, sliding sleeve 404 passes through telescopic spring 407 and bracing piece 403 sliding connection, two sliding connection has annular structure's rubber pad 405 on the sample needle 308, three sliding sleeve 404 bottom is connected with rubber pad 405 top edge is perpendicular respectively, is favorable to three under the effect of bracing piece 403 sliding sleeve 404 installation to realize to the support of rubber pad 405, make under telescopic spring 407 sliding sleeve 404 with have the elasticity between the bracing piece 403, under the effect of playing shock attenuation and shrink, be favorable to during the sample needle 308, rubber pad 405 can conflict to the sample pipe and compress tightly, convenient stable sample work.
Specifically, the positioning mechanism 2 includes the positioning disk 201, the positioning disk 201 is installed at organism 1 top, the rotating sleeve 206 is installed to positioning disk 201 bottom, the positioning disk 201 rotates with organism 1 and stand 301 through changeing the cover 206 and is connected, positioning disk 201 top side edge department is equipped with a plurality of standing grooves 203 and holding tank 202 that are annular equidistance and distribute, change the cover 206 bottom outside and install second gear 207, first motor 204 is installed to organism 1 bottom inboard, install first gear 205 on the first motor 204, first gear 205 meshes with second gear 207, through change the cover 206's effect down the convenience be right the positioning disk 201 rotates and installs on the organism 1, through a plurality of the setting up of standing groove 203, the convenience is inserted the depositing to the sample tube, and is convenient follow-up the sample needle 308 sample work, through the work of first motor 204, first motor 204 drives first gear 205 is right second gear 207 is realized the rotation of positioning disk 201 is favorable to switching position 203, the sample tube 203 is favorable to the sample tube is convenient to be moved to two sample tube 308 and is moved to sample tube 308 by one to sample the same time, and is convenient for the sample tube 308 is cut up the sample tube is convenient for two to be moved to sample tube 308 and is moved to the sample tube to the sample 308 to the distance has been moved to the sample tube to the sample 308 to the sample down.
Specifically, wiper mechanism 5 includes conveyer trough 505, the inside annular conveyer trough 505 that is equipped with of placing tray 201, conveyer trough 505 is through a plurality of spread grooves 506 and the intercommunication of holding vessel 202 bottom, one of them spread groove 506 runs through in conveyer trough 505 and extends to the placing tray 201 outside, annular seal cover 504 is installed to spread groove 506 bottom lateral wall, ring structure's sealing washer 502 is installed at organism 1 top, seal cover 504 bottom and sealing washer 502 conflict, organism 1 inside one end is equipped with guide slot 503, guide slot 503 one end runs through in sealing washer 502 and be connected with spread groove 506 bottom, connecting pipe 501 is installed in organism 1 outside, connecting pipe 501 one end extends to inside the guide slot 503, through connecting pipe 501 and outside pipeline's connection is favorable to carrying out, works as placing tray 201 rotates certain initial position time, guide slot 503 with spread groove 506 intercommunication is favorable to making the washing liquid get into inside the conveyer trough 505, guide slot 503 with between the spread groove 506 have sealing washer 502 with seal cover 504 conflict, play sealed effect, make the inside seal cover 502 can not spill over through the inside seal cover 506, and can not spill over with the inside seal cover 506 is equipped with the inside seal cover 506, the inside can be washed through the inside the connecting pipe 502 is kept out through the inside the connecting pipe, the inside is washed down, the inside is guaranteed to the sealing washer has been washed down, the inside the sealing washer is washed down, and is guaranteed through the inside has been washed down by the inside the connecting pipe has been washed down, and is easy to be washed down.
Specifically, fixture 6 includes lug 601, stand 301 lateral wall fixedly connected with lug 601, lug 601 is hemispherical structure, place dish 201 internally mounted has a plurality of roof 602 that are annular equidistance and distribute, be equipped with logical groove 604 that runs through on the roof 602, holding vessel 202 is located logical groove 604 center department, roof 602 passes through compression spring 603 and the inside sliding connection of placing dish 201, roof 602 one end is arc structure, roof 602 one end extends to the placing plate 307 outside and stand 301 conflict, the rubber piece 606 is installed to the roof 602 other end, rubber piece 606 one side extends to inside the standing groove 203, through a plurality of roof 602's installation is favorable to being connected to the rubber piece 606 under compression spring 603 roof 602 with stand 301 conflict, through when placing dish 201 rotates, place dish 201 rotates certain position and takes a sample, place plate 307 assigned position top one end with lug 601 conflict, roof 602 is by conflict 603 compression spring 603 extends to the placing plate 307 outside and stand 301 conflict, the rubber piece 606 is favorable to the slip piece 606 is followed to the sample is followed to the inside and is taken out to the installation of roof 602, thereby the sample is followed by the slip piece is separated to the side of being favorable to take out the sample tube and is closely taken out.
Specifically, the rubber block 606 has a trapezoid structure, a buffer spring 605 is connected between the rubber block 606 and the top plate 602, and the rubber block 606 and the top plate 602 have elasticity under the action of the buffer spring 605, so that after the rubber block 606 is in contact with a sample tube, the top plate 602 can continue to slide, the placing plate 201 can be rotated in place to sample, and the sample tube is prevented from being extruded and deformed.
Specifically, the protection mechanism 7 includes the protection casing 701, install the protection casing 701 on the organism 1, the protection casing 701 is inside hollow trapezium structure, connecting axle 702 is installed to protection casing 701 both sides, protection casing 703 is installed to protection casing 701 one side, protection casing 703 both sides are connected through connecting axle 702 and protection casing 701 rotation, handle 705 is installed to protection casing 703 one side, through the effect of protection casing 701 is favorable to right the protection is sheltered from at organism 1 top to can not receive external factor influence in the sampling process, through the effect of connecting axle 702 under protection casing 703 can rotate, through the handle 705 drive, make things convenient for protection casing 703 is in protection casing 701 one side rotates and opens and closes, conveniently goes up unloading work to the sample cell.
Specifically, the shield 701 top is installed and is blocked 704, the shield 704 one end is through a plurality of conflict springs 707 and the inboard sliding connection in shield 701 top, the shield 704 other end rotates and is connected with two guide pulleys 706, guide pulley 706 is contradicted with the shield cover 703 inboard, through be favorable to under the effect of shield 704 to shield the protection at shield 701 top, makes to shelter from more comprehensive, through under the effect of conflict springs 707 the shield 704 has the elasticity, through the cooperation of guide pulley 706, shield 704 keep with the inboard conflict of shield cover 703 can shrink work when shield cover 703 is opened, thereby play to shield 701 top keeps.
When the invention is used, firstly, the placing disc 201 is conveniently rotatably installed on the machine body 1 under the action of the rotating sleeve 206, the sample tubes are conveniently inserted and stored through the opening of the plurality of placing grooves 203, the sampling work of the subsequent sampling needles 308 is conveniently carried out, the first motor 204 drives the first gear 205 to drive the second gear 207 through the work of the first motor 204, thereby realizing the rotation of the placing disc 201, being beneficial to switching the positions of the placing grooves 203, the sampling work of the sample tubes is conveniently and sequentially carried out, the opening of the plurality of storing grooves 202 is beneficial to injecting cleaning liquid, the sampling needles 308 are convenient to carry out the cleaning work after the sampling, and because the distance between the placing grooves 203 and the storing grooves 202 is equal to the distance between the two placing grooves 203, the synchronous sampling of the two sample tubes by the two sampling needles 308 is facilitated, the sampling needles 308 can be used for sampling, the sampling needles 308 are inserted into the storing grooves 202 for cleaning, through rotation operation in turn, the synchronous sampling and cleaning is realized, the detection efficiency is improved, the support and installation of the support column 302 are facilitated under the action of the upright column 301, the connection of the cross beam 303 is realized, the connection of the mounting plate 305 is convenient under the action of the cross beam 303, the rotation of the mounting plate 305 is realized through the driving of the second motor 304, the connection of the placing plate 307 is facilitated through the mounting of the air cylinder 306, the mounting of the two sampling needles 308 is realized, the two sampling needles 308 can rotate at different angles under the driving of the second motor 304, the insertion of the sampling needles 308 into the sample tubes is realized through the operation of the air cylinder 306, the sampling of one sampling needle 308 is realized through the rotation of the sampling needles 308, the cleaning of one sampling needle 308 is realized, the simultaneous sampling of the two sample tubes is also realized, the operation is more convenient, the efficiency is higher, the sliding connection between the two guide rods 402 and the two fixing rods 401 is beneficial to playing a role in positioning and guiding the mounting plate 305 and the placing plate 307, so that the placing plate 307 slides smoothly under the action of the air cylinder 306, the placing plate 307 after sliding can be reset timely through the installation of the reset spring 406, the safety protection function is achieved, the three sliding sleeves 404 are beneficial to being installed under the action of the three supporting rods 403, the rubber pad 405 is supported, the telescopic performance is achieved between the sliding sleeves 404 and the supporting rods 403 under the action of the telescopic springs 407, the rubber pad 405 can be abutted and pressed on a sample tube under the action of damping and shrinkage, the convenient and stable sampling work is facilitated when the sampling needle 308 samples, the cleaning liquid is beneficial to being conveyed through the connection of the connecting tube 501 and an external pipeline, and when the placing plate 201 rotates for a certain initial position, the guide groove 503 is communicated with the connecting groove 506, so that cleaning liquid can enter the conveying groove 505, the sealing ring 502 and the sealing sleeve 504 are in interference between the guide groove 503 and the connecting groove 506, the sealing effect is achieved, the cleaning liquid can not overflow, the cleaning liquid is injected into the storage groove 202 through the plurality of connecting grooves 506 to be stored, the follow-up cleaning work of the sampling needle 308 is facilitated, meanwhile, water pumping through an external pipeline is convenient to carry out, the cleaning liquid is conveniently pumped out and replaced, when the placing plate 201 rotates to work, the sealing sleeve 504 at the bottom of the connecting groove 506 is in interference sliding with the sealing ring 502, the sealing operation is kept all the time, the cleaning liquid in the storage groove 202 can not overflow, the rubber blocks 606 are connected through the installation of the plurality of top plates 602, the top plates 602 are in interference with the upright post 301 under the action of the compression spring 603, when the placing plate 201 rotates to rotate to a certain position to sample, the top end of the appointed position of the placing plate 307 is abutted against the bump 601, the top plate 602 is abutted against and slides under the action of the compression spring 603, the top plate 602 is facilitated to drive the rubber block 606 to slide into the placing groove 203, so that the rubber block 606 is tightly abutted against the sample tube, sampling work is convenient to carry out, after sampling is completed, the top plate 602 is separated from the bump 601 through the secondary rotation of the placing plate 201, the rubber block 606 is separated from the sample tube, subsequent taking out is convenient, the rubber block 606 and the top plate 602 are provided with retractility under the action of the buffer spring 605, the top plate 602 can continue sliding after the rubber block 606 is abutted against the sample tube, the placing plate 201 is rotated in place to sample, and the sample tube is prevented from being extruded and deformed, the shielding protection to organism 1 top is favorable to under the effect through protection casing 701 to can not receive external factor influence in the sampling process, protection cover 703 can rotate under the effect through connecting axle 702, through handle 705 drive, make things convenient for protection cover 703 to rotate on one side of protection casing 701 and open and close, the unloading work on the sample tube is convenient, be favorable to shielding protection to protection casing 701 top under the effect of baffle 704, make shielding more comprehensive, baffle 704 has the elasticity under the effect through conflict spring 707, cooperation through guide pulley 706, baffle 704 keeps contradicting with protection cover 703 inboard, can shrink the work when protection cover 703 is opened, thereby play and keep shielding the work to protection casing 701 top.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. An autosampler for a chromatograph, comprising:
a machine body (1);
the sampling mechanism (3) is installed on the machine body (1), the sampling mechanism (3) comprises a stand column (301), the stand column (301) is detachably connected to the center of the machine body (1), a support column (302) is installed at the top of the stand column (301), a cross beam (303) is installed on the support column (302), a second motor (304) is detachably connected to the top of one end of the cross beam (303), a mounting plate (305) is rotatably connected to the bottom of one end of the cross beam (303), an output shaft of the second motor (304) extends to the inside of the cross beam (303) and is connected with the center of the top of the mounting plate (305), an air cylinder (306) is detachably connected to the center of the bottom of the mounting plate (305), a placement plate (307) is installed at the bottom of the air cylinder (306), a connecting seat (309) is installed at two ends of the bottom of the placement plate (307), and sampling needles (308) are connected to the bottoms of the two connecting seats (309) in a clamping mode.
The device comprises a placing mechanism (2), wherein the placing mechanism (2) is arranged on a machine body (1), the placing mechanism (2) comprises a placing disc (201), the placing disc (201) is arranged at the top of the machine body (1), a rotating sleeve (206) is arranged at the bottom of the placing disc (201), the placing disc (201) is rotationally connected with the machine body (1) and a stand column (301) through the rotating sleeve (206), a plurality of placing grooves (203) and storage grooves (202) which are distributed in annular equidistant mode are arranged at the top side edge of the placing disc (201), a second gear (207) is arranged at the outer side of the bottom of the rotating sleeve (206), a first motor (204) is arranged at the inner side of the bottom of the machine body (1), and a first gear (205) is arranged on the first motor (204) and meshed with the second gear (207);
the holding mechanism (6) is arranged on the holding mechanism (2), the holding mechanism (6) comprises a convex block (601), the side wall of the upright post (301) is fixedly connected with the convex block (601), the convex block (601) is of a hemispherical structure, a plurality of top plates (602) which are distributed in annular equidistant mode are arranged in the holding plate (201), through grooves (604) are formed in the top plates (602), the storage groove (202) is arranged in the center of the through grooves (604), the top plates (602) are in sliding connection with the inside of the holding plate (201) through compression springs (603), one ends of the top plates (602) are of arc structures, one end of the top plate (602) extends to the outer side of the placing plate (307) to be in conflict with the upright post (301), a rubber block (606) is arranged at the other end of the top plate (602), one side of the rubber block (606) extends to the inner side of the placing groove (203), the rubber block (606) is of a trapezoid structure, a buffer spring (605) is connected between the rubber block (606) and the top plate (602), when the placing plate (201) rotates to a certain position to sample, one end of the top of the appointed position of the placing plate (307) is in conflict with the protruding block (601), the top plate (602) is in conflict to get rid of the action of the compression spring (603) to slide, the top plate (602) drives the rubber block (606) to slide into the placing groove (203), the rubber block (606) is abutted against the sample tube, the placing plate (201) rotates again, the top plate (602) is separated from the protruding block (601), and the rubber block (606) is separated from the sample tube;
and the auxiliary mechanism (4) is arranged on the sampling mechanism (3), and the auxiliary mechanism (4) is arranged on the sampling mechanism.
2. An autosampler for chromatograph according to claim 1 and characterized in that: the auxiliary mechanism (4) comprises fixing rods (401), the fixing rods (401) are fixedly connected to two ends of the bottom of the mounting plate (305), guide rods (402) are mounted at two ends of the top of the placement plate (307), the tops of the two guide rods (402) are in sliding connection with the interiors of the two fixing rods (401) through reset springs (406), and the guide rods (402) are of a T-shaped structure.
3. An autosampler for chromatograph according to claim 1 and characterized in that: three support rods (403) are respectively and vertically fixedly connected to the two connecting seats (309), a sliding sleeve (404) is arranged on each support rod (403), each sliding sleeve (404) is connected with each support rod (403) in a sliding mode through a telescopic spring (407), a rubber pad (405) with an annular structure is connected to each sampling needle (308) in a sliding mode, and the bottoms of the three sliding sleeves (404) are respectively and vertically connected with the edge of the top of each rubber pad (405).
4. An autosampler for chromatograph according to claim 1 and characterized in that: install wiper mechanism (5) on placing mechanism (2), wiper mechanism (5) include conveyer trough (505), place inside annular conveyer trough (505) that is equipped with of dish (201), conveyer trough (505) are through a plurality of spread grooves (506) and bin (202) bottom intercommunication, one of them spread groove (506) run through in conveyer trough (505) and extend to the dish (201) outside, annular seal cover (504) are installed to spread groove (506) bottom lateral wall, annular seal cover (502) are installed at organism (1) top, seal cover (504) bottom contradicts with seal ring (502), organism (1) inside one end is equipped with guide slot (503), guide slot (503) one end runs through in seal ring (502) and is connected with spread groove (506) bottom, connecting pipe (501) are installed in the organism (1) outside, connecting pipe (501) one end extends to inside guide slot (503).
5. An autosampler for chromatograph according to claim 1 and characterized in that: install protection machanism (7) on organism (1), protection machanism (7) are including protection casing (701), install protection casing (701) on organism (1), protection casing (701) are inside hollow trapezium structure, connecting axle (702) are installed to protection casing (701) both sides, protection casing (703) are installed to protection casing (701) one side, protection casing (703) both sides are connected through connecting axle (702) and protection casing (701) rotation, handle (705) are installed to protection casing (703) one side.
6. An autosampler for a chromatograph according to claim 5 and characterized in that: the baffle (704) is installed at protection casing (701) top, baffle (704) one end is through a plurality of conflict springs (707) and the inboard sliding connection in protection casing (701) top, baffle (704) other end rotates and is connected with two guide pulleys (706), guide pulley (706) are contradicted with protection cover (703) inboard.
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