CN212459560U - Accurate quantitative sample injector suitable for liquid chromatograph - Google Patents
Accurate quantitative sample injector suitable for liquid chromatograph Download PDFInfo
- Publication number
- CN212459560U CN212459560U CN202020545219.0U CN202020545219U CN212459560U CN 212459560 U CN212459560 U CN 212459560U CN 202020545219 U CN202020545219 U CN 202020545219U CN 212459560 U CN212459560 U CN 212459560U
- Authority
- CN
- China
- Prior art keywords
- quantitative
- liquid inlet
- liquid
- wall
- priming pump
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an accurate quantitative sample injector suitable for liquid chromatograph, which belongs to the technical field of sample injection of liquid chromatograph, comprising a bottom plate, wherein the left end and the right end of the top surface of the bottom plate are respectively screwed with a left support plate and a right support plate, the right wall of the left support plate is screwed with a liquid inlet quantitative tube mounting substrate, the right wall of the liquid inlet quantitative tube mounting substrate is integrally formed with a liquid inlet quantitative tube, the right wall of the liquid inlet quantitative tube is communicated and connected with a sealing plate, a quantitative push rod is communicated and plugged between the left wall and the right wall of the sealing plate, the right end of the quantitative push rod is fixedly connected with a piston rod of an electric cylinder, the right end of the electric cylinder is screwed with the left wall of the right support plate, the top of the liquid inlet quantitative tube is communicated and integrally formed with a liquid inlet, the top of the liquid inlet is communicated and fixed with the bottom of, the utility model discloses structural design scientific and reasonable has promoted the flexibility of using when not influencing quantitative precision.
Description
Technical Field
The utility model relates to a liquid chromatograph advances a kind technical field, specifically is a accurate ration injector suitable for liquid chromatograph.
Background
The liquid chromatograph is an instrument which firstly separates a mixture and then analyzes and identifies the mixture by utilizing the difference of the distribution ratio of the mixture between two liquids which are liquid-solid or immiscible, and the modern liquid chromatograph comprises a high-pressure infusion pump, a sample injection system, a temperature control system, a chromatographic column, a detector, a signal recording system and the like. Compared with the classical liquid phase column chromatography device, the device has the characteristics of high efficiency, rapidness, sensitivity and the like.
The existing liquid chromatograph generally adopts a diaphragm injection sample injector or a high-pressure sample injection room to complete sample injection operation, the sample injection amount is constant, which is beneficial to improving the repeatability of an analysis sample, but the sample injection amount is single, the flexibility and the diversity of detection and use requirements are neglected, and more use requirements are difficult to meet.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
In view of the above-mentioned problem that exists in the current accurate ration injector that is applicable to liquid chromatograph, provided the utility model discloses.
Therefore, the utility model aims at providing an accurate ration injector suitable for liquid chromatograph can solve above-mentioned present liquid chromatograph that proposes and generally adopts diaphragm injection injector or high-pressure to advance and accomplish between the appearance and advance the kind operation, and the sample volume is invariable, and this is profitable to the repeatability that improves the analysis sample, but the sample volume is single to ignore the flexibility and the variety that detect the user demand, is difficult to satisfy more operation requirements's problem.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
an accurate quantitative injector suitable for use in a liquid chromatograph, comprising: the left end and the right end of the top surface of the bottom plate are respectively screwed with a left support plate and a right support plate, the right wall of the left support plate is screwed with a liquid inlet quantitative tube mounting substrate, the right wall of the liquid inlet quantitative tube mounting substrate is integrally formed with a liquid inlet quantitative tube, the right wall of the liquid inlet quantitative tube is communicated and connected with a sealing plate, a quantitative push rod is communicated and inserted between the left wall and the right wall of the sealing plate, the left end of the quantitative push rod is integrally formed with a sealing plug, the right end of the quantitative push rod is fixedly connected with a piston rod of an electric cylinder, the right end of the electric cylinder is screwed with the left wall of the right support plate, the top of the liquid inlet quantitative tube is communicated and integrally formed with a liquid inlet, the top of the liquid inlet is communicated and fixed with the bottom of a liquid inlet valve, the top of the liquid inlet valve is fixedly connected with an L-, the water inlet and the imbibition hose fixed connection of first miniature self priming pump, the bottom of feed liquor dosage tube link up and integrated into one piece has the liquid outlet, the bottom and the play liquid valve fixed connection of liquid outlet, the bottom of going out the liquid valve is connected fixedly with the water inlet of the miniature self priming pump of second, the delivery port and the transfer line fixed connection of the miniature self priming pump of second, the antetheca spiro union of bottom plate has test tube fixing device, the right wall spiro union of right side extension board has the controller.
As an optimal solution of accurate quantitative sample injector suitable for liquid chromatograph, wherein: the front wall of the bottom plate is in threaded connection with a wire holder.
As an optimal solution of accurate quantitative sample injector suitable for liquid chromatograph, wherein: the outer wall of the liquid inlet quantifying pipe is transversely carved with scale marks.
As an optimal solution of accurate quantitative sample injector suitable for liquid chromatograph, wherein: the liquid inlet quantifying pipe is made of a transparent plastic structure.
As an optimal solution of accurate quantitative sample injector suitable for liquid chromatograph, wherein: the test tube fixing device comprises a metal ferrule, a lifting rod is inserted in the metal ferrule, a limiting block is screwed at the top of the lifting rod, a magnet ring is sleeved on the outer wall of the bottom end of the lifting rod, and a test tube fixing seat is screwed at the bottom of the lifting rod.
As an optimal solution of accurate quantitative sample injector suitable for liquid chromatograph, wherein: the utility model discloses a miniature self priming pump of controller, including the controller, the singlechip is installed through the mainboard to the inside of controller, control button is installed to the right wall of controller, control button and singlechip electric connection, singlechip and electric jar, first miniature self priming pump and the miniature self priming pump of second are electric connection respectively.
Compared with the prior art: the accurate quantitative sample injector suitable for the liquid chromatograph is provided with a liquid inlet quantitative tube, a liquid inlet valve, an L-shaped connecting piece, a first miniature self-sucking pump, a liquid suction hose, a liquid outlet valve, a second miniature self-sucking pump, a liquid conveying tube, a quantitative push rod, a sealing plug, an electric cylinder, a controller, a single chip microcomputer, a control button and a wiring seat, wherein according to the required sample amount, the feed amount of the electric cylinder is set through the controller, the electric cylinder feeds to drive the quantitative push rod to move, when the left side of the sealing plug moves to the required scale, the electric cylinder stops running, the first miniature self-sucking pump is opened through the controller, the first miniature self-sucking pump sucks the sample liquid in a test tube through the liquid suction hose and injects the sample liquid into the liquid inlet tube through the L-shaped connecting piece, the liquid inlet valve and the liquid inlet valve, when the sample liquid is filled, open the miniature self priming pump of second after the liquid outlet valve, the miniature self priming pump of second is taken the sample liquid in with the feed liquor dosing pipe out, and can detect through transfer line input liquid chromatograph, inspiratory sample liquid measure can be adjusted as required in the feed liquor dosing pipe, feed volume can realize through setting for the electric jar, the electric jar feed volume is controlled according to required sample liquid measure by the singlechip, in the sample volume at every turn of can accurate control, can freely adjust sample volume according to the user demand again, the flexibility of using has been improved greatly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a front view of the present invention;
fig. 2 is a rear view of the present invention;
FIG. 3 is a schematic left side view of the present invention;
fig. 4 is a schematic circuit diagram of the present invention.
In the figure, a base plate 100, a left support plate 210, a right support plate 220, a liquid inlet quantitative tube 300, a liquid inlet quantitative tube 301, a liquid inlet 310, a liquid inlet valve 311, a 312L-shaped connecting piece 313, a first miniature self-priming pump 314, a liquid suction hose 314, a liquid outlet 320, a liquid outlet 321, a second miniature self-priming pump 322, a liquid delivery pipe 323, a sealing plate 400, a quantitative push rod 510, a sealing plug 520, an electric cylinder 600, a test tube fixing device 700, a metal ferrule 710, a lifting rod 720, a limiting block 721, a magnet ring 722, a test tube fixing seat 730, a controller 800, a singlechip 810, a control button 820 and a wire holder 900.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides an accurate quantitative sample injector suitable for a liquid chromatograph, please refer to fig. 1, fig. 2 and fig. 3, comprising a bottom plate 100;
referring to fig. 1 and 2, a left support plate 210 and a right support plate 220 are respectively screwed at the left end and the right end of the top surface of a bottom plate 100, a liquid inlet quantitative tube mounting substrate 301 is screwed on the right wall of the left support plate 210, a liquid inlet quantitative tube 300 is integrally formed on the right wall of the liquid inlet quantitative tube mounting substrate 301, a sealing plate 400 is connected to the right wall of the liquid inlet quantitative tube 300 in a penetrating manner, the sealing plate 400 is used for sealing the right end of the liquid inlet quantitative tube 300, a quantitative push rod 510 is connected between the left wall and the right wall of the sealing plate 400 in a penetrating and inserting manner, a sealing plug 520 is integrally formed at the left end of the quantitative push rod 510, the sealing plug 520 is made of nitrile rubber to prevent liquid leakage, the right end of the quantitative push rod 510 is fixedly connected with a piston rod of an electric cylinder 600, the right end of the electric cylinder 600 is screwed on the left wall of the right support;
referring to fig. 1, 2 and 3, a liquid inlet 310 is formed through and integrated with the top of a liquid inlet quantitative tube 300, the top of the liquid inlet 310 is fixedly connected with the bottom of a liquid inlet valve 311, the liquid inlet valve 311 is used for controlling a liquid inlet passage, the top of the liquid inlet valve 311 is fixedly connected with an L-shaped connector 312, the other end of the L-shaped connector 312 is fixedly connected with the water outlet of a first micro self-priming pump 313, the water inlet of the first micro self-priming pump 313 is fixedly connected with a liquid suction hose 314, the first micro self-priming pump 313 sucks in sample liquid through the liquid suction hose 314, a liquid outlet 320 is formed through and integrated with the bottom of the liquid inlet quantitative tube 300, the bottom of the liquid outlet 320 is fixedly connected with a liquid outlet valve 321, the liquid outlet valve 321 is used for controlling a liquid outlet passage, the bottom of the liquid outlet valve 321 is fixedly connected with the water inlet of a second micro self-priming pump, the second miniature self-priming pump 322 is used for sucking out the sample liquid in the liquid inlet quantitative pipe 300 and inputting the sample liquid into the liquid chromatograph for detection through the liquid conveying pipe 323;
referring to fig. 1, 2 and 3 again, the front wall of the bottom plate 100 is screwed with a test tube fixing device 700, and the test tube fixing device 700 is used for installing and fixing a sample liquid test tube;
referring to fig. 1 and 2, a controller 800 is screwed on the right wall of the right support plate 220, and the controller 800 is used for controlling the operation of the electric cylinder 600, the first micro self-priming pump 313 and the second micro self-priming pump 322;
referring to fig. 1, a wire holder 900 is screwed to the front wall of the bottom plate 100, and the wire holder 900 is used for connecting a power line;
scale marks are transversely carved on the outer wall of the liquid inlet quantifying pipe 300 and used for assisting in observing whether the position of the sealing plug 520 is accurate or not;
the liquid inlet quantifying pipe 300 is made of a transparent plastic structure, so that the liquid inlet quantifying pipe is not easy to break while the internal condition is observed;
referring to fig. 1, 2 and 3, the test tube fixing device 700 includes a metal ferrule 710, a lifting rod 720 is inserted into the metal ferrule 710, a limiting block 721 is screwed on the top of the lifting rod 720, a magnet ring 722 is sleeved on the outer wall of the bottom end of the lifting rod 720, a test tube fixing seat 730 is screwed on the bottom of the lifting rod 720, the test tube fixing seat 730 is used for fixing a test tube, the test tube fixing seat 730 and the test tube are lifted upwards by the lifting rod 720 during use, and when the magnet ring 722 contacts the metal ferrule 710, the test tube fixing seat 730 can be fixed by magnetic attraction between the magnet ring 722 and the metal ferrule 710;
referring to fig. 4, a single chip microcomputer 810 is installed inside the controller 800 through a main board, a control button 820 is installed on the right wall of the controller 800, the control button 820 is electrically connected with the single chip microcomputer 810, the single chip microcomputer 810 is respectively electrically connected with the electric cylinder 600, the first micro self-priming pump 313 and the second micro self-priming pump 322, the single chip microcomputer 810 adopts an STM32F407IGH6 type single chip microcomputer and is used for operating programs, controlling the feeding amount of a piston rod of the electric cylinder 600 and controlling the operation of the first micro self-priming pump 313 and the second micro self-priming pump 322;
when the device is used specifically, a person skilled in the art needs to install the device at the top of a liquid chromatograph, connect the device with a power supply through a wire holder 900, fix a test tube on a test tube fixing seat 730, lift the test tube fixing seat 730 together with the test tube upwards through a lifting rod 720, when a magnet ring 722 contacts with a metal ferrule 710, the test tube fixing seat 730 is magnetically attracted and fixed through the magnetic attraction force between the magnet ring 722 and the metal ferrule 710, at this time, a suction hose 314 is inserted into the test tube, a required sample amount is input through a control button 820 on a controller 800, a singlechip 810 operates a calculation program to control the feeding amount of an electric cylinder 600, the electric cylinder 600 feeds and drives a quantitative push rod 500 to move, when the left side of a sealing plug 520 moves to a required scale, the electric cylinder 600 stops operating, a first micro self-priming pump 313 is opened through the controller 800, the first micro self-priming pump 313 sucks the sample liquid in the test tube through the suction hose 314 and, During feed liquor valve 311 and inlet 310 pour into feed liquor dosing pipe 300, when filling up the sample liquid in feed liquor dosing pipe 300, close first miniature self priming pump 313 and feed liquor valve 311, open the miniature self priming pump 322 of second after liquid outlet valve 321, the miniature self priming pump 322 of second takes out the sample liquid in the feed liquor dosing pipe 300 to can detect through transfer line 323 input liquid chromatograph.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. The utility model provides an accurate ration injector suitable for liquid chromatograph which characterized in that: the liquid inlet quantitative pipe installation structure comprises a bottom plate (100), a left support plate (210) and a right support plate (220) are respectively screwed at the left end and the right end of the top surface of the bottom plate (100), a liquid inlet quantitative pipe installation substrate (301) is screwed on the right wall of the left support plate (210), a liquid inlet quantitative pipe (300) is integrally formed on the right wall of the liquid inlet quantitative pipe installation substrate (301), a sealing plate (400) is communicated and connected with the right wall of the liquid inlet quantitative pipe (300), a quantitative push rod (510) is communicated and inserted between the left wall and the right wall of the sealing plate (400), a sealing plug (520) is integrally formed at the left end of the quantitative push rod (510), the right end of the quantitative push rod (510) is fixedly connected with a piston rod of an electric cylinder (600), the right end of the electric cylinder (600) is screwed on the left wall of the right support plate (220), the top of the liquid inlet quantitative pipe (300) is communicated and integrally formed with a liquid inlet (310), and, the top and the L type connecting piece (312) fixed connection of feed liquor valve (311), the other end and the delivery port of first miniature self priming pump (313) of L type connecting piece (312) are connected fixedly, the water inlet and imbibition hose (314) fixed connection of first miniature self priming pump (313), the bottom of feed liquor dosing pipe (300) link up and integrated into one piece has liquid outlet (320), the bottom and the play liquid valve (321) fixed connection of liquid outlet (320), the bottom of going out liquid valve (321) is connected fixedly with the water inlet of the miniature self priming pump of second (322), the delivery port and transfer line (323) fixed connection of the miniature self priming pump of second (322), the antetheca spiro union of bottom plate (100) has test tube fixing device (700), the right wall spiro union of right branch board (220) has controller (800).
2. The accurate quantitative sample injector of claim 1, wherein: the front wall of the bottom plate (100) is in threaded connection with a wire holder (900).
3. The accurate quantitative sample injector of claim 1, wherein: scale marks are transversely carved on the outer wall of the liquid inlet quantifying pipe (300).
4. The accurate quantitative sample injector of claim 1, wherein: the liquid inlet quantifying pipe (300) is made of a transparent plastic structure.
5. The accurate quantitative sample injector of claim 1, wherein: test tube fixing device (700) includes ferrule (710), it has lifter (720) to peg graft in ferrule (710), the top spiro union of lifter (720) has stopper (721), the bottom outer wall of lifter (720) has cup jointed magnet circle (722), the bottom spiro union of lifter (720) has test tube fixing base (730).
6. The accurate quantitative sample injector of claim 1, wherein: singlechip (810) is installed through the mainboard in the inside of controller (800), control button (820) are installed to the right wall of controller (800), control button (820) and singlechip (810) electric connection, singlechip (810) and electric cylinder (600), first miniature self priming pump (313) and second miniature self priming pump (322) are electric connection respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020545219.0U CN212459560U (en) | 2020-04-14 | 2020-04-14 | Accurate quantitative sample injector suitable for liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020545219.0U CN212459560U (en) | 2020-04-14 | 2020-04-14 | Accurate quantitative sample injector suitable for liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212459560U true CN212459560U (en) | 2021-02-02 |
Family
ID=74472597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020545219.0U Expired - Fee Related CN212459560U (en) | 2020-04-14 | 2020-04-14 | Accurate quantitative sample injector suitable for liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212459560U (en) |
-
2020
- 2020-04-14 CN CN202020545219.0U patent/CN212459560U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114460326B (en) | Reagent replenishing device and reagent replenishing method for sample analyzer | |
| CN212459560U (en) | Accurate quantitative sample injector suitable for liquid chromatograph | |
| CN109557247B (en) | Hydrolysis degree measuring instrument and measuring method thereof | |
| CN111024481A (en) | Sample mixing method and sample analyzer | |
| CN219695036U (en) | Intelligent dispensing and dripping integrated instrument | |
| CN219348763U (en) | Intelligent flow-regulating high performance liquid chromatograph | |
| CN201174054Y (en) | Liquid level control apparatus | |
| Prados-Rosales et al. | Propelling devices: the heart of flow injection approaches | |
| CN208125596U (en) | One kind being used for chemiluminescent substrate filling apparatus | |
| CN110873662A (en) | Liquid path system, blending method and sample analysis device | |
| CN115301639A (en) | Liquid path system of mass spectrum pretreatment equipment | |
| CN201304338Y (en) | Quantitative sampling device | |
| CN201096697Y (en) | Liquid density/concentration automatic detection and complementation device | |
| CN105148792B (en) | Intelligent liquid blending machine and blending method | |
| CN112362794A (en) | Sample feeder, full-loop sample feeding method, liquid analysis method and liquid chromatography system | |
| CN208127137U (en) | A kind of two-way sample injector | |
| CN209549392U (en) | A kind of mixing liquid medicine quantitative adding device | |
| CN209387661U (en) | A kind of immune labeled slide turntable placement rack | |
| CN207051252U (en) | A kind of mobile phase evenly mixing device of Pharmaceutical Analysis LC-MS instrument | |
| CN215374770U (en) | Automatic liquid sample preparation device | |
| CN2360853Y (en) | Hydrated silica radical automatic monitor | |
| CN217112035U (en) | Biochemical detector | |
| JP2008002335A (en) | Liquid feed pump | |
| WO2023045438A1 (en) | Microfluidic detection system for refrigerator, and refrigerator | |
| CN218401837U (en) | Liquid storage device of chemiluminescence immunoassay analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 |