CN208520821U - A kind of liquid chromatograph of fixed wave length flow velocity - Google Patents
A kind of liquid chromatograph of fixed wave length flow velocity Download PDFInfo
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- CN208520821U CN208520821U CN201821118879.XU CN201821118879U CN208520821U CN 208520821 U CN208520821 U CN 208520821U CN 201821118879 U CN201821118879 U CN 201821118879U CN 208520821 U CN208520821 U CN 208520821U
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- wave length
- fixed wave
- plunger rod
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- liquid chromatograph
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Abstract
The utility model discloses a kind of liquid chromatographs of fixed wave length flow velocity, including liquid storage device, high pressure constant flow pump, sample injector, chromatographic column, UV detector and recorder；The high pressure constant flow pump includes stepper motor, potential difference rotor, plunger rod and pump head；The stepper motor is connect by shaft coupling with potential difference rotor；There are two plunger rod connectors for the potential difference rotor position setting symmetrical above and below；Plunger rod connector one end connect the other end with potential difference rotor and connect with return spring and plunger rod；The plunger rod other end is deep into inside pump head；Light source, fixed wave length optical filter, flow cell and fixed wave length photodiode are fixedly installed with inside the UV detector.The utility model has the beneficial effects that: in fixed test condition repeated work, it can be with lowering apparatus cost, operating technology cost, maintenance cost, to realize low cost operation using the liquid chromatograph of fixed flow rate, fixed wave length.
Description
Technical field
The utility model relates to a kind of liquid chromatograph more particularly to a kind of liquid chromatographs of fixed wave length flow velocity.
Background technique
The high pressure constant flow pump used in liquid chromatograph in the market is mainly by the pump housing, exhaust-valve, pressure transmitter, driving
Motor and five part of control circuit composition.It controls driving motor band moving cam by control circuit and rotates, and realizes liquid conveying,
Its flow velocity is adjustable.And the wave-length coverage of UV detector used in liquid chromatograph is determined according to light source,
Different optical source wavelength ranges are also different.UV detector applied currently on the market is issued according to continuous light source helium lamp
Light, by the optical path components such as slit, lens, grating, reflecting mirror formed single wavelength collimated light beam, by the adjusting of grating come
Obtain different wave length.And currently on the market applied by this wavelengthtunable, adjustable flow velocity pair liquid chromatograph, examined fixed
In the case of survey condition repeated work, not only instrument cost is high, maintenance cost is high, but also occupied fund is high, operation is more complicated.
Utility model content
The technical problem to be solved by the utility model is to provide one kind in fixed test condition repeated work, energy
Enough realize low cost operation, the liquid chromatograph of lowering apparatus cost, operating technology cost, maintenance cost.
In order to solve the above technical problems, technical solution adopted in the utility model is:
A kind of liquid chromatograph of fixed wave length flow velocity, which is characterized in that including liquid storage device, high pressure constant flow pump, sample injector,
Chromatographic column, UV detector and recorder；The high pressure constant flow pump includes stepper motor, potential difference rotor, plunger rod and pump head；Institute
Stepper motor is stated to connect by shaft coupling with potential difference rotor；There are two plunger rods to connect for the potential difference rotor position setting symmetrical above and below
Connect device；Plunger rod connector one end connect the other end with potential difference rotor and connect with return spring and plunger rod；The plunger
The bar other end is deep into inside pump head；It is provided in the pump head and is respectively provided with the eluent connecting tube of valve and is connected with damper
Pipe；Light source, two pole of fixed wave length optical filter, flow cell and fixed wave length photoelectricity are fixedly installed with inside the UV detector
Pipe.
Further technical solution is: the plunger rod, which passes through, to be connect inside return spring with plunger rod connector.
Further technical solution is: joining place is provided with plunger rod sealing ring outside the plunger rod and pump head.
Further technical solution is: import check valve is provided in the eluent connecting tube, and unidirectional by import
Valve jointing is connect with eluent connecting tube.
Further technical solution is: Outlet check valves is provided in the damper connecting tube, and unidirectional by outlet
Valve jointing is connect with damper connecting tube.
Further technical solution is: the plunger rod other end is deep into inside pump head and passes through among exits and entrances valve
Position.
Further technical solution is: the light source uses the ultraviolet lamp of fixed wave length.
Further technical solution is: the optical path of the light source successively passes through fixed wave length optical filter, flow cell, finally by
Fixed wave length photodiode receives signal.
Further technical solution is: one end is provided with the import other end and is provided with waste liquid port on the flow cell.
The beneficial effects of adopting the technical scheme are that
In fixed test condition repeated work, can be dropped using the liquid chromatograph of fixed flow rate, fixed wave length
Low instrument cost, operating technology cost, maintenance cost, so that low cost operation is realized, before guaranteeing that detection is completed as required
It puts, guarantees fund utilization rate.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the overall flow figure of liquid chromatograph.
Fig. 2 is the structural schematic diagram of high pressure constant flow pump.
Fig. 3 is high pressure constant flow pump pump head schematic diagram of internal structure.
Fig. 4 is the structural schematic diagram of Ultraviolet Detector.
Wherein: 1- stepper motor, 2- shaft coupling, 3- potential difference rotor, 4- plunger rod connector, 5- return spring, 6- plunger
Bar, 7- plunger rod sealing ring, 8- pump head, 9- eluent connecting tube, 10- import check valve jointing, 11- import check valve,
12- Outlet check valves, 13- Outlet check valves jointing, 14- damper connecting tube, the ultraviolet lamp of 15- fixed wave length, 16- are solid
Standing wave long length filter, 17- flow cell, 18- fixed wave length photodiode, the import of 19- flow cell, 20- waste liquid port.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that and described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
As shown in Figs 1-4, a kind of liquid chromatograph of fixed wave length flow velocity, including liquid storage device, high pressure constant flow pump, sample introduction
Device, chromatographic column, UV detector and recorder.The high pressure constant flow pump includes stepper motor 1, potential difference rotor 3,6 and of plunger rod
Pump head 8；The stepper motor 1 is directly connect with potential difference rotor 3 by shaft coupling 2, reduces transmission lag；The potential difference rotor 3
There are two plunger rod connectors 4 for position setting symmetrical above and below；Described 4 one end of plunger rod connector connect another with potential difference rotor 3
End is connect with return spring 5 and plunger rod 6, and 6 one end of plunger rod passes through 5 inside of return spring and connect with plunger rod connector 4, separately
One end is deep into 8 inside of pump head and passes through the eluent connecting tube 9 for being respectively provided with valve being arranged in pump head 8 and connects with damper
The middle position of 14 exits and entrances valve of pipe.Light source, fixed wave length optical filter 16, stream are fixedly installed with inside the UV detector
Logical pond 17 and fixed wave length photodiode 18.The light source uses the ultraviolet lamp 15 of fixed wave length；The optical path of the light source according to
It is secondary to pass through fixed wave length optical filter 16, flow cell 17, signal is finally received by fixed wave length photodiode 18.
Preferred: the plunger rod 6 is provided with plunger rod sealing ring 7 with 8 outside joining place of pump head.
It is preferred: to be provided with import check valve 11 in the eluent connecting tube 9, and pass through import check valve jointing
10 connect with eluent connecting tube 9.
It is preferred: to be provided with Outlet check valves 12 in the damper connecting tube 14, and connect by Outlet check valves
First 13 connect with damper connecting tube 14.
Preferred: one end is provided with 19 other end of import and is provided with waste liquid port 20 on the flow cell 17.
High pressure constant flow pump during the work time, by supplying fixed pulse voltage to the stepper motor 1 of coutroi velocity, makes
Stabilization of speed is in certain value, and the revolving speed of the pressure change fine steps motor 1 by damper, makes pressure flow speed stability, thus
It plays driving mobile phase and sample passes through the function of chromatography column and detection system.Sample after high pressure flow pump drives by
Enter in the flow cell of UV detector after chromatographic column and sample injector, in UV detector, the light issued from ultraviolet lamp is through solid
On standing wave long length filter 16, flow cell 17 to fixed wave length photodiode 18, by analyzed component in column efflux concentration
Variation be converted into optics or electrical signal, reduce cost using the UV detector of fixed wave length to reaching, realize
The purpose of low cost operation.
Claims (9)
1. a kind of liquid chromatograph of fixed wave length flow velocity, which is characterized in that including liquid storage device, high pressure constant flow pump, sample injector, color
Compose column, UV detector and recorder；The high pressure constant flow pump includes stepper motor, potential difference rotor, plunger rod and pump head；It is described
Stepper motor is connect by shaft coupling with potential difference rotor；There are two plunger rods to connect for the potential difference rotor position setting symmetrical above and below
Device；Plunger rod connector one end connect the other end with potential difference rotor and connect with return spring and plunger rod；The plunger rod
The other end is deep into inside pump head；It is provided in the pump head and is respectively provided with the eluent connecting tube of valve and is connected with damper
Pipe；Light source, two pole of fixed wave length optical filter, flow cell and fixed wave length photoelectricity are fixedly installed with inside the UV detector
Pipe.
2. the liquid chromatograph of fixed wave length flow velocity according to claim 1, which is characterized in that the plunger rod passes through back
Position spring inner is connect with plunger rod connector.
3. the liquid chromatograph of fixed wave length flow velocity according to claim 2, which is characterized in that the plunger rod and pump head
External joining place is provided with plunger rod sealing ring.
4. the liquid chromatograph of fixed wave length flow velocity according to claim 1, which is characterized in that the eluent connecting tube
On be provided with import check valve, and connect by import check valve jointing with eluent connecting tube.
5. the liquid chromatograph of fixed wave length flow velocity according to claim 1, which is characterized in that the damper connecting tube
On be provided with Outlet check valves, and connect by Outlet check valves jointing with damper connecting tube.
6. the liquid chromatograph of fixed wave length flow velocity according to claim 1, which is characterized in that the plunger rod other end
It is deep into inside pump head and passes through exits and entrances valve middle position.
7. the liquid chromatograph of fixed wave length flow velocity according to claim 1, which is characterized in that the light source is using fixation
The ultraviolet lamp of wavelength.
8. the liquid chromatograph of fixed wave length flow velocity according to claim 7, which is characterized in that the optical path of the light source according to
It is secondary to pass through fixed wave length optical filter, flow cell, signal is finally received by fixed wave length photodiode.
9. the liquid chromatograph of fixed wave length flow velocity according to claim 8, which is characterized in that one end on the flow cell
It is provided with the import other end and is provided with waste liquid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821118879.XU CN208520821U (en) | 2018-07-16 | 2018-07-16 | A kind of liquid chromatograph of fixed wave length flow velocity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821118879.XU CN208520821U (en) | 2018-07-16 | 2018-07-16 | A kind of liquid chromatograph of fixed wave length flow velocity |
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| Publication Number | Publication Date |
|---|---|
| CN208520821U true CN208520821U (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821118879.XU Active CN208520821U (en) | 2018-07-16 | 2018-07-16 | A kind of liquid chromatograph of fixed wave length flow velocity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333314A (en) * | 2019-07-19 | 2019-10-15 | 漳州龙文区卡慧仑信息技术有限公司 | A kind of food composition detection device |
| CN114746752A (en) * | 2019-11-27 | 2022-07-12 | 沃特世科技公司 | Active damping gradient proportional valve |
-
2018
- 2018-07-16 CN CN201821118879.XU patent/CN208520821U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333314A (en) * | 2019-07-19 | 2019-10-15 | 漳州龙文区卡慧仑信息技术有限公司 | A kind of food composition detection device |
| CN114746752A (en) * | 2019-11-27 | 2022-07-12 | 沃特世科技公司 | Active damping gradient proportional valve |
| US11940424B2 (en) | 2019-11-27 | 2024-03-26 | Waters Technologies Corporation | Gradient proportioning valve |
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