CN202645955U - A liquid chromatogram advection infusion pump - Google Patents
A liquid chromatogram advection infusion pump Download PDFInfo
- Publication number
- CN202645955U CN202645955U CN 201120541936 CN201120541936U CN202645955U CN 202645955 U CN202645955 U CN 202645955U CN 201120541936 CN201120541936 CN 201120541936 CN 201120541936 U CN201120541936 U CN 201120541936U CN 202645955 U CN202645955 U CN 202645955U
- Authority
- CN
- China
- Prior art keywords
- advection
- infusion pump
- liquid chromatogram
- optoelectronic switch
- pressure
- 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 a liquid chromatogram advection infusion pump, comprising a double-plunger-series-connected pump head (1), a low-stroke dual cam (2), a main belt pulley (3), an optoelectronic switch (4), a servo motor (5) provided with an encoder, and a pressure sensor (6). The liquid chromatogram advection infusion pump is characterized in that the optoelectronic switch (4) is disposed above the main belt pulley (3) and is used for detecting the rotary position of the main belt pulley, the pressure sensor (6) is used for detecting a pressure pulsation position, and servo motor (5) provided with the encoder is controlled through the pressure pulsation position detected by the pressure sensor (6). The liquid chromatogram advection infusion pump realizes stable pressure output and achieves the objective of advection; and, without a damper, the volume of a system is low and high-precision control of gradient infusion is facilitated.
Description
Technical field
The utility model relates to a kind of high pressure pump, particularly relates to a kind of liquid chromatogram advection infusion pump.
Background technique
One of liquid chromatograph critical component is high pressure pump, and the technical requirements of this pump mainly is infuse precision and advection, and advection has material impact to baseline noise and the chromatographic column life-span of liquid chromatograph.The fluid transfer pump that is used at present liquid chromatogram is reciprocating pump, reciprocating pump has pressure pulsation in infusion process, that is to say that the advection effect is bad, therefore it is crucial how reducing pressure pulsation, traditional infusion pump is to reduce pressure pulsation by increasing damper, but the increase damper can increase the dead volume of system is unfavorable for accurate control gradient, and damper is to become a new source of trouble.
Summary of the invention
The utility model provides a kind of high-performance highly reliable high performance liquid chromatography advection infusion pump for the deficiencies in the prior art.
The technical solution of the utility model is: a kind of liquid chromatogram advection infusion pump, comprise double-plunger series connection pump head 1, little stroke double-linked cam 2, main pulley 3, optoelectronic switch 4, the actuating motor 5 with encoder, pressure transducer 6, it is characterized in that: described optoelectronic switch 4 is arranged at the top of main pulley 3, detect main pulley 3 rotational position by optoelectronic switch 4, by pressure transducer 6 detected pressures pulsation position, the actuating motor 5 of the pressure pulsation positioning control band encoder that detects according to pressure transducer 6.
Detect the pressure pulsation position distribution of each cycle of motion, adjust in real time cam by software and do the non-uniform velocity rotation, make delivery pressure steady, reach the advection purpose.
The utility model has the advantages of and be: the utility model is defeated steady with going out pressure, reaches the advection purpose, and without the composed of external damping device, system bulk is little, is beneficial to the highi degree of accuracy control of gradient transfusion.
Description of drawings
Fig. 1 is a kind of liquid chromatogram advection of the utility model infusion pump structural representation
Accompanying drawing indicates: 1 for double-plunger series connection pump head, 2 for little stroke double-linked cam, 3 for main pulley, 4 for optoelectronic switch, 5 be that actuating motor, 6 with encoder is pressure transducer
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, a kind of liquid chromatogram advection infusion pump, comprise double-plunger series connection pump head 1, little stroke double-linked cam 2, main pulley 3, optoelectronic switch 4, the actuating motor 5 with encoder, pressure transducer 6, it is characterized in that: described optoelectronic switch 4 is arranged at the top of main pulley 3, detect main pulley 3 rotational position by optoelectronic switch 4, by pressure transducer 6 detected pressures pulsation position, the actuating motor 5 of the pressure pulsation positioning control band encoder that detects according to pressure transducer 6.
Detect the pressure pulsation position distribution of each cycle of motion, adjust in real time cam by software and do the non-uniform velocity rotation, make delivery pressure steady, reach the advection purpose.
More than be that a kind of specific embodiment structure provided by the utility model is described in detail; present embodiment just is used for helping to understand design method of the present utility model and core concept; simultaneously; to those skilled in the art; identical according to thought essence of design of the present utility model, all within the utility model protection domain.In sum, this description can not be interpreted as restriction of the present utility model.
Claims (1)
1. liquid chromatogram advection infusion pump, comprise double-plunger series connection pump head (1), little stroke double-linked cam (2), main pulley (3), optoelectronic switch (4), actuating motor (5) with encoder, pressure transducer (6), it is characterized in that: described optoelectronic switch (4) is arranged at the top of main pulley (3), detect the main pulley rotational position by optoelectronic switch (4), by pressure transducer (6) detected pressures pulsation position, the actuating motor (5) of the pressure pulsation positioning control band encoder that detects according to pressure transducer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120541936 CN202645955U (en) | 2011-12-22 | 2011-12-22 | A liquid chromatogram advection infusion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120541936 CN202645955U (en) | 2011-12-22 | 2011-12-22 | A liquid chromatogram advection infusion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645955U true CN202645955U (en) | 2013-01-02 |
Family
ID=47415072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120541936 Expired - Fee Related CN202645955U (en) | 2011-12-22 | 2011-12-22 | A liquid chromatogram advection infusion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645955U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165998A (en) * | 2017-06-19 | 2017-09-15 | 北京秦方科技有限公司 | Transmission component, pump housing mechanism and high pressure pump |
| CN107178491A (en) * | 2017-06-19 | 2017-09-19 | 北京秦方科技有限公司 | Pump housing mechanism and high pressure pump |
| CN110892263A (en) * | 2017-09-12 | 2020-03-17 | 株式会社岛津制作所 | Plunger pump |
-
2011
- 2011-12-22 CN CN 201120541936 patent/CN202645955U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165998A (en) * | 2017-06-19 | 2017-09-15 | 北京秦方科技有限公司 | Transmission component, pump housing mechanism and high pressure pump |
| CN107178491A (en) * | 2017-06-19 | 2017-09-19 | 北京秦方科技有限公司 | Pump housing mechanism and high pressure pump |
| CN110892263A (en) * | 2017-09-12 | 2020-03-17 | 株式会社岛津制作所 | Plunger pump |
| CN110892263B (en) * | 2017-09-12 | 2022-05-24 | 株式会社岛津制作所 | Plunger pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202645955U (en) | A liquid chromatogram advection infusion pump | |
| CN203557335U (en) | Assembling device for signal wheel of camshaft | |
| CN207145158U (en) | A kind of liquid chromatographic system high pressure pump | |
| CN204627899U (en) | A kind of liquid chromatograph high pressure advection infusion pump | |
| CN105257497B (en) | A kind of high pressure pump and high-pressure mini infusion pump systems | |
| CN202978626U (en) | Assembling device for capturing reference in press mounting process of motor | |
| CN103940496A (en) | Small liquid flow standard device special for hemodialysis machine calibrator | |
| CN206201549U (en) | A kind of passive four-corner leveling system based on servo hydraulic system | |
| CN101644242A (en) | Large-flow plunger pump for preparing chromatograph in industry | |
| WO2014030498A1 (en) | Liquid chromatography device and liquid delivery device | |
| CN203067201U (en) | High-pressure advection infusion pump | |
| CN203239511U (en) | High-pressure constant flow pump | |
| CN202069939U (en) | Novel transfusion pump | |
| CN108167171B (en) | A kind of control method that infusion pump pressure fluctuation automatically corrects | |
| CN202661138U (en) | Miniature piston-type normal flow device | |
| CN203232010U (en) | Pressure buffering device of liquid chromatograph | |
| CN204827831U (en) | High pressure plunger transfer pump | |
| JP2011033556A5 (en) | ||
| CN204729387U (en) | A kind of novel oil cylinder with gear racks | |
| CN204170205U (en) | The flexible balanced infusion pump in medical application of a kind of bellows | |
| CN204913759U (en) | Novel shim liner dress fills up mechanism | |
| CN203114548U (en) | High-pressure infusion pump | |
| CN201763556U (en) | Quick variable response axial plunger pump | |
| CN203404462U (en) | Digital proportional electronic control valve | |
| CN203548091U (en) | Ceramic split charging pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |