Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Series-parallel connection liquid chromatogram pump

A liquid chromatography and parallel technology, which is applied in the field of series-parallel liquid chromatography pumps, can solve the problems of poor liquid pressure stability, difficult cam design, complex cam structure, etc., to achieve easy trimming, reduce industrial design difficulty, and simple cam curves Effect

Active Publication Date: 2013-09-11
BEIJING PURKINJE GENERAL INSTR
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The invention aims to solve the technical problems that the design of the cam in the existing liquid chromatography pump is difficult, the cam structure is complicated, the processing is difficult, and the stability of the liquid pressure is poor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Series-parallel connection liquid chromatogram pump
  • Series-parallel connection liquid chromatogram pump
  • Series-parallel connection liquid chromatogram pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Definitions of terms involved in the present invention:

[0045] The "series" in the series-parallel liquid chromatography pump refers to the simultaneous operation of multiple reciprocating liquid delivery mechanisms, which is conducive to increasing the displacement of the pump; the "parallel" refers to the sequential work of multiple reciprocating liquid delivery mechanisms. To ensure that the pump can continuously supply liquid to the system.

[0046] Such as Figure 4 , Figure 8 As shown, the cam 61 in the series-parallel liquid chromatography pump of the present invention is an end face cam, and its cam curve is arranged on the other end face opposite to the end face having the camshaft 60 . Each curve includes at least two curve units, and each curve unit includes an ascending curve that can convert the rotational motion of the cam 61 into a uniform linear motion of the plunger 69, a descending curve that returns the plunger 69 to its original position, and a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A serial-parallel liquid-phase chromatographic pump includes a cam (61) with a cam shaft (60), a pump head (65), at least four reciprocating liquid delivery mechanisms and a cam driving mechanism. The cam (61) is an edge cam. The curve of the cam includes 2-5 curve units. Each curve unit includes an ascending curve and a falling curve. The at least four reciprocating liquid delivery mechanisms are provided at one side of the cam (61) where the curve of the cam is provided. Each driven wheel (62) has a shape of a truncated cone. The ratios of the circumferences of any two cross sections of the driven wheel (62) to the circumferences of the curves of the cam in the corresponding positions are equal. The pump has simple structure, easy design and machining, and good liquid pressure stabilization.

Description

technical field [0001] The invention relates to a series-parallel liquid chromatography pump for liquid chromatography. Background technique [0002] The liquid chromatographic pump is one of the important components of the liquid chromatograph, and its performance directly affects the stability, repeatability and accuracy of the analysis. At present, the liquid chromatography pumps used for liquid chromatography mainly include 180° single-cam parallel liquid chromatography pumps, 120° single-cam parallel liquid chromatography pumps and 180° double-cam liquid chromatography pumps. [0003] Such as figure 1 As shown, the 180° single-cam parallel liquid chromatography pump includes a cam 51 mounted on a camshaft 50 , two sets of reciprocating liquid delivery mechanisms and two pump heads 55 symmetrically mounted on both sides of the cam 51 . Wherein the reciprocating liquid delivery mechanism includes a plunger push rod 53 supported on a housing (not shown in the figure) of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04B9/04G01N30/36
CPCG01N2030/326G01N30/32F04B9/04
Inventor 陆振宇
Owner BEIJING PURKINJE GENERAL INSTR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com