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

Precision plunger metering pump

A plunger metering pump, a precise technology, applied in the direction of pumps, liquid variable capacity machinery, machines/engines, etc., can solve the problems of limited types of precision metering pumps, insufficient development scale and speed, and achieve moderate hardness and long service life. , The effect of strong pressure resistance

Inactive Publication Date: 2010-05-19
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the indicators of metering pumps used in industries such as medical treatment, sanitation, and chemical preparations, such as accuracy requirements, are more stringent than those in other industrial fields. The types of precision metering pumps that can meet such applications are relatively limited, and the scale and speed of development are not as good as industrial metering pumps.
At present, the pump head is developed with strong corrosion resistance and transparent materials, and the water-washed sealed compartment mechanism is used to improve the sealing performance. The compact precision plunger metering pump with a distribution accuracy of 0.1uL has no precedent in China.

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
  • Precision plunger metering pump
  • Precision plunger metering pump
  • Precision plunger metering pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described in detail in conjunction with the accompanying drawings and embodiments.

[0036] to combine figure 1 , figure 2 and image 3 As shown, the miniature precision plunger metering pump of the present invention includes a driving mechanism 1, a sealing mechanism 2 and a pump head 3 connected in sequence, and the driving mechanism 1 includes a stepping motor 15 installed on the upper end of the connection base 10 and a stepping motor The ball screw 13 connected to the rotating shaft of the motor 15; the sealing mechanism 2 includes a plunger 17, an upper seal ring 35 and a lower seal ring 19, and the plunger 17 is connected to the ball screw 13 through a screw connection seat 11; The pump head 3 includes a pump compartment 23 , a fluid pump inlet port 28 and an outlet port 24 .

[0037] The drive mechanism 1 also includes a photoelectric position sensor for detecting the position of the plunger 17 and a photoelectric encode...

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

The invention relates to a precision plunger metering pump, comprising three parts, including a driving mechanism, a sealing mechanism and a pump head, wherein by utilizing a photoelectric encoder, the driving mechanism accurately controls the movement of a stepper motor, thereby effectively preventing the error of pump output caused by the falling out of step or the idling of the motor from being generated; a sealing ring in the sealing mechanism is matched with a plunger piston to realize precision fit, and the sealing ring based on a stainless steel spring enclasping mechanism solves the problems of low enclasping force and easy aging of a traditional rubber ring and prolongs the service life; the pump head has the design of water washable airtight cabin, realizes the washing and sealing functions of the plunger piston and the sealing ring and prolongs the sealing life; the technic level of processing the plunger piston and slab rubber achieves the purpose that a miniature precision plunger metering pump can provide 20MPa pressure intensity; and the slab rubber has good polishing performance, extremely high transparency, compact structure, small volume and delicate appearance. The precision plunger metering pump can be applied to the precise metering of fluid in the fields of medication, sanitation, biology and chemistry.

Description

technical field [0001] The invention relates to a fluid precision metering and output device, which is applied in the fields of medical treatment, sanitation, biology and chemistry, and is a fluid perfusion device with a precision level of 0.1uL, a tolerance of less than 20 MPa, and the need to observe the window of the pump cabin. Background technique [0002] Precision plunger metering pumps have been widely used in high-precision perfusion equipment in the fields of pharmaceuticals, biological reagents and petrochemical industries for their high-precision control of fluid metering and strong corrosion resistance. As an ideal equipment for fluid precision metering, after more than half a century of practical application and technical improvement, metering pumps have now entered their high-speed growth period, forming a current product status that uses two mainstream technologies of plunger and diaphragm. Now, the mature power drive method and the material technology of the...

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 Applications(China)
IPC IPC(8): F04B13/00
Inventor 许正光常海龙滕莉李英郑国华阮德林庞晓东
Owner THE FIRST RES INST OF MIN OF PUBLIC SECURITY
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