CN104653426B - A kind of high-purity plunger piston type micro sampling pump - Google Patents
A kind of high-purity plunger piston type micro sampling pump Download PDFInfo
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- CN104653426B CN104653426B CN201510026747.9A CN201510026747A CN104653426B CN 104653426 B CN104653426 B CN 104653426B CN 201510026747 A CN201510026747 A CN 201510026747A CN 104653426 B CN104653426 B CN 104653426B
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- Prior art keywords
- plunger
- clutch plate
- cam
- motor
- displacement pump
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Abstract
The open a kind of high-purity plunger piston type micro sampling pump of the present invention, guide rail is horizontally disposed with, and is connected with the bottom of sliding support, so that sliding support realizes moving left and right on guide rail；The top of sliding support being provided with plunger displacement pump, is respectively provided with inlet check valve and liquid outlet check valve on the inlet and liquid outlet of plunger displacement pump, the plunger at one end of plunger displacement pump embeds inside plunger displacement pump, and the other end is provided with clutch plate；Spring coaxial sleeve is on plunger, and the two ends of spring contact with clutch plate and plunger displacement pump respectively；Motor fixed placement, its drive shaft is fixed with cam.Present configuration is simple, and its sample introduction precision is high, and trace is adjustable, operates steadily, low cost, it is adaptable to the accurate sample introduction of analytical tool system and the mixing of high-precision reagent, is specifically for use in the sample detection of microbial culture medium.
Description
Technical field
The invention belongs to Liquid sample introduction pump technical field, relate to a kind of high-purity plunger piston type micro sampling pump, it is adaptable to analyze
The accurate sample introduction of instrument system and the mixing of high-precision reagent, be specifically for use in microorganism sample detection.
Background technology
In chemical analysis, sampling precision and concordance determine the precision of measurement result.Equally, micro-life in liquid
Thing quantitative and qualitative analysis is also required to high-precision sampling equipment, requires must not squeeze in sampling process to hinder microorganism simultaneously.
At present chemical analysis mainly there are manual sample introduction, peristaltic pump sample introduction and three kinds of modes of syringe pump sample introduction.There is effect in manual sample introduction
The shortcomings such as rate is low, low precision；Wriggling sample introduction easily causes sample introduction play, is not suitable for trace accurate measurement；Syringe pump sample introduction can
To realize accurate measurement, but expensive.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of high-purity plunger piston type micro sampling pump, it enters
Sample precision is high, and trace is adjustable, operates steadily, low cost, it is adaptable to the accurate sample introduction of analytical tool system and high-precision
Reagent mixes, and is specifically for use in microorganism sample detection.
The technical purpose of the present invention is achieved by following technical proposals:
A kind of high-purity plunger piston type micro sampling pump, including: guide rail, sliding support, plunger displacement pump, feed liquor conduit, go out liquid
Conduit, liquid outlet check valve, inlet check valve, spring, cam and motor,
Described guide rail is horizontally disposed with, and is connected with the bottom of sliding support so that sliding support realize on guide rail about move
Dynamic；The top of sliding support is provided with plunger displacement pump, the inlet and liquid outlet of plunger displacement pump are respectively provided with inlet list
To valve and liquid outlet check valve, the plunger at one end of plunger displacement pump embeds inside plunger displacement pump, and the other end is provided with clutch plate；Spring
Coaxial sleeve is on plunger, and the two ends of spring contact with clutch plate and plunger displacement pump respectively；Described motor fixed placement, it drives
Cam it is fixed with on moving axis.
In the inventive solutions, clutch plate is embedded with force cell, preferably at clutch plate and cam contact
The center of outer face carries out the embedded force cell that arranges, and described force cell is connected with controller, described control
Device and motors, wherein:
Described force cell, is used for gathering motor band moving cam when rotating, and cam contacts with clutch plate the pressure of generation
Signal, and by the pressure signal transmission of collection to controller；
Described controller, for receiving the pressure signal of force cell conveying, and by this pressure signal, with setting
Pressure signal compares, when two equal or force cell conveying pressure signals of pressure signal reach to set pressure
Signal 90 95% time, send control signal to motor so that motor reversely rotate, leave clutch plate with band moving cam；
When the pressure signal of force cell conveying is zero, send control signal to motor, so that motor rotates forward, with band
Moving cam extruding clutch plate.
In the inventive solutions, selecting motor model is UTmotor35HB35 or star section 86BYG250A86,
And the drive shaft of motor is the most upward.
In the inventive solutions, select at inlet and liquid outlet, connect feed liquor conduit and eluate conduit respectively,
And on feed liquor conduit and eluate conduit, be respectively provided with inlet check valve and liquid outlet check valve, preferably inlet and go out liquid
Opening's edge vertical direction is arranged.
Above-mentioned high-purity plunger piston type micro sampling pump, when using, controls slider bracket and moves right one section on guide rail
Distance, makes clutch plate contact with cam, is then turned on motor, and the drive shaft of motor drives cam rotation, when rotated
Cam pushes clutch plate pressuring spring, makes clutch plate promote plunger simultaneously, makes plunger produce reciprocal fortune inside plunger displacement pump
Dynamic, so that the volume of plunger displacement pump inner sealing working volumes changes and produces suction, to realize inhaling from feed liquor conduit
Take liquid, from eluate conduit drain.Cam leaves clutch plate when rotated, due to the rebound effect of spring, clutch
Plate is pushed back home position by spring, and drives plunger to move.Owing to motor and guide rail are all fixedly installed, and plunger displacement pump
It is fixed on the sliding support that can move along guide rail, therefore by adjusting sliding support position on guide rail, Ji Keshi
Existing distance between clutch plate and motor cam, thus change plunger and reach sample introduction liquid at the internal stroke of plunger displacement pump
Body flow carries out the purpose of trace adjustment.
After cam completes a rotation round, rotation round can be informed in by the acquisition function of force cell
Time, the scope (i.e. maximum effect force value) of the intermolecular forces of cam and clutch plate, owing to slider bracket position is fixed,
Controller presets pressure signal, and utilizes force cell collection pressure signal constantly to contrast with preset value,
Controlling motor to reversely rotate when satisfied control requires, band moving cam leaves clutch plate.The most just can be by adjusting
Whole slider bracket position and cam degree, be controlled the flow of plunger displacement pump.
Its simple in construction of technical scheme, its sample introduction precision is high, and trace is adjustable, operates steadily, low cost, suitable
For accurate sample introduction and the mixing of high-precision reagent of analytical tool system, it is specifically for use in the sample introduction inspection of microbial culture medium
Survey.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation along A direction of the embodiment of the present invention one shown in Fig. 1；
Fig. 3 is the structural representation of the embodiment of the present invention two；
Fig. 4 is the structural representation along A direction of the embodiment of the present invention two shown in Fig. 1；
Wherein, 1: guide rail, 2: sliding support, 3: plunger displacement pump, 4: liquid outlet check valve, 5: the plunger of plunger displacement pump,
6: spring, 7: cam, 8: motor, 9: inlet check valve, 10: eluate conduit, 11: feed liquor conduit, 12:
Clutch plate, 13: force cell.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with specific embodiment.
Embodiment one:
Shown in attached Fig. 1 and 2, a kind of high-purity plunger piston type micro sampling pump, including: guide rail, sliding support, post
Plug pump, feed liquor conduit, eluate conduit, liquid outlet check valve, inlet check valve, spring, cam and motor.
Described guide rail is horizontally disposed with, and is connected with the bottom of sliding support so that sliding support realize on guide rail about move
Dynamic；The top of sliding support is provided with plunger displacement pump, at inlet and upper point of the liquid outlet (not marking in figure) of plunger displacement pump
Not arranging inlet check valve and liquid outlet check valve, the plunger at one end of plunger displacement pump embeds inside plunger displacement pump, and the other end is arranged
There is clutch plate；Spring coaxial sleeve is on plunger, and the two ends of spring contact with clutch plate and plunger displacement pump respectively；Described motor
Fixed placement, its drive shaft is fixed with cam.
Selecting motor model is UTmotor35HB35 or star section 86BYG250A86, and the vertical court of drive shaft of motor
On.
Select at inlet and liquid outlet, connect feed liquor conduit and eluate conduit respectively, and at feed liquor conduit and eluate conduit
On be respectively provided with inlet check valve and liquid outlet check valve, preferably inlet and liquid outlet are vertically arranged.
When using, control slider bracket and move right on guide rail one end distance, make clutch plate contact with cam,
Being then turned on motor, the drive shaft of motor drives cam rotation, and cam pushes clutch plate pressuring spring when rotated, with
Time make clutch plate promote plunger, make plunger produce reciprocating motion inside plunger displacement pump so that plunger displacement pump inner sealing work
The volume of cavity volume changes and produces suction, to realize drawing liquid, from eluate conduit drain from feed liquor conduit.
Cam leaves clutch plate when rotated, and due to the rebound effect of spring, clutch plate is pushed back home position by spring, and drives
Plunger moves.Owing to motor and guide rail are all fixedly installed, and plunger displacement pump is fixed on and can prop up along the slip that guide rail moves
On frame, therefore by adjust sliding support position on guide rail, can realize between clutch plate and motor cam away from
From, thus change plunger and reach sample introduction fluid flow is carried out the purpose of trace adjustment at the internal stroke of plunger displacement pump.
Embodiment two:
Shown in accompanying drawing 3 and 4, a kind of high-purity plunger piston type micro sampling pump, structure is basically identical with embodiment 1,
In clutch plate, it is embedded with force cell, the preferably center at clutch plate with the outer face of cam contact be embedded in carrying out
Putting force cell, described force cell is connected with controller, described controller and motors, wherein:
Described force cell, is used for gathering motor band moving cam when rotating, and cam contacts with clutch plate the pressure of generation
Signal, and by the pressure signal transmission of collection to controller；
Described controller, for receiving the pressure signal of force cell conveying, and by this pressure signal, with setting
Pressure signal compares, when two equal or force cell conveying pressure signals of pressure signal reach to set pressure
Signal 90 95% time, send control signal to motor so that motor reversely rotate, leave clutch plate with band moving cam；
When the pressure signal of force cell conveying is zero, send control signal to motor, so that motor rotates forward, with band
Moving cam extruding clutch plate.
When using, control slider bracket move right on guide rail one end distance and fix, make clutch plate and cam
Contacting, be then turned on motor, the drive shaft of motor drives cam rotation, and cam is pushed clutch plate and oppresses when rotated
Spring, makes clutch plate promote plunger simultaneously, makes plunger produce reciprocating motion inside plunger displacement pump, so that inside plunger displacement pump
The volume of seal operation cavity volume changes and produces suction, to realize drawing liquid from feed liquor conduit, arranges from eluate conduit
Go out liquid.Cam leaves clutch plate when rotated, and due to the rebound effect of spring, clutch plate is pushed back home position by spring,
And drive plunger to move.After cam completes a rotation round, can by the acquisition function of force cell,
When being informed in rotation round, the scope (i.e. maximum effect force value) of the intermolecular forces of cam and clutch plate, owing to slide block props up
Rack position is fixed, and presets pressure signal in the controller, and utilize force cell gather pressure signal constantly with
Preset value contrasts, and controls motor when satisfied control requires and reversely or rotates forward, band moving cam leave or
Extruding clutch plate, i.e. uses.The most just can be by adjusting slider bracket position and cam degree, to plunger
The flow of pump is controlled.
Above the present invention is done exemplary description, it should explanation, in the case of without departing from the core of the present invention,
Any simple deformation, amendment or other those skilled in the art can not spend the equivalent of creative work all to fall
Enter protection scope of the present invention.
Claims (5)
1. the using method of a high-purity plunger piston type micro sampling pump, it is characterised in that high-purity plunger piston type micro sampling pump includes: guide rail, sliding support, plunger displacement pump, feed liquor conduit, eluate conduit, liquid outlet check valve, inlet check valve, spring, cam and motor, described guide rail is horizontally disposed with, and is connected with the bottom of sliding support, so that sliding support realizes moving left and right on guide rail；The top of sliding support being provided with plunger displacement pump, is respectively provided with inlet check valve and liquid outlet check valve on the inlet and liquid outlet of plunger displacement pump, the plunger at one end of plunger displacement pump embeds inside plunger displacement pump, and the other end is provided with clutch plate；Spring coaxial sleeve is on plunger, and the two ends of spring contact with clutch plate and plunger displacement pump respectively；Described motor fixed placement, its drive shaft is fixed with cam；Force cell it is embedded with in clutch plate, described force cell is connected with controller, described controller and motors, wherein: described force cell, during for gathering the rotation of motor band moving cam, cam contact with clutch plate produce pressure signal, and by gather pressure signal transmission to controller；Described controller, for receiving the pressure signal of force cell conveying, and by this pressure signal, compare with the pressure signal set, when two equal or force cell conveying pressure signals of pressure signal reach set pressure signal 90 95%, send control signal to motor, so that motor reversely rotates, leave clutch plate with band moving cam；When the pressure signal of force cell conveying is zero, send control signal to motor, so that motor rotates forward, to drive cam clutch plate；
Control sliding support to move right on guide rail a segment distance fixing, clutch plate is made to contact with cam, it is then turned on motor, the drive shaft of motor drives cam rotation, and cam pushes clutch plate pressuring spring when rotated, makes clutch plate promote plunger simultaneously, plunger is made to produce reciprocating motion inside plunger displacement pump, so that the volume of plunger displacement pump inner sealing working volumes changes and produces suction, to realize drawing liquid, from eluate conduit drain from feed liquor conduit；After cam completes a rotation round, can be by the acquisition function of force cell, when being informed in rotation round, the scope of the intermolecular forces of cam and clutch plate, owing to sliding support position is fixed, preset pressure signal in the controller, and utilize force cell collection pressure signal constantly to contrast with preset value, controlling motor to reversely rotate when satisfied control requires, band moving cam leaves clutch plate；When the pressure signal of force cell conveying is zero, send control signal to motor, so that motor rotates forward, to drive cam clutch plate.
The using method of a kind of high-purity plunger piston type micro sampling pump the most according to claim 1, it is characterised in that carry out in the center of clutch plate Yu the outer face of cam contact embedded arranging force cell.
The using method of a kind of high-purity plunger piston type micro sampling pump the most according to claim 1, it is characterised in that selecting motor model is UTmotor35HB35 or star section 86BYG250A86, and the drive shaft of motor is the most upward.
The using method of a kind of high-purity plunger piston type micro sampling pump the most according to claim 1, it is characterized in that, connect feed liquor conduit and eluate conduit at inlet and liquid outlet respectively, and on feed liquor conduit and eluate conduit, be respectively provided with inlet check valve and liquid outlet check valve.
The using method of a kind of high-purity plunger piston type micro sampling pump the most according to claim 4, it is characterised in that preferably inlet and liquid outlet is vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510026747.9A CN104653426B (en) | 2015-01-20 | 2015-01-20 | A kind of high-purity plunger piston type micro sampling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510026747.9A CN104653426B (en) | 2015-01-20 | 2015-01-20 | A kind of high-purity plunger piston type micro sampling pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104653426A CN104653426A (en) | 2015-05-27 |
| CN104653426B true CN104653426B (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510026747.9A Expired - Fee Related CN104653426B (en) | 2015-01-20 | 2015-01-20 | A kind of high-purity plunger piston type micro sampling pump |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505382A (en) * | 2017-09-19 | 2017-12-22 | 同方威视技术股份有限公司 | Automatic calibration device and ionic migration spectrometer |
| CN108535502A (en) * | 2018-04-09 | 2018-09-14 | 杭州杭睿科技有限公司 | A kind of automatic detection device for medicine sample |
| CN109289529B (en) * | 2018-11-07 | 2021-09-28 | 温州莲华环保科技有限公司 | High-performance separation membrane purification device |
| CN112957563B (en) * | 2021-03-18 | 2022-09-06 | 台州恩泽医疗中心(集团) | Micro-injection pump for ICU department |
| CN117518357B (en) * | 2024-01-04 | 2024-04-12 | 南京迪威普光电技术股份有限公司 | Adjustable heating device for optical fiber tapering |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5547351A (en) * | 1994-03-01 | 1996-08-20 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Low pressure low volume liquid pump |
| JP3783303B2 (en) * | 1996-10-29 | 2006-06-07 | 株式会社島津製作所 | Plunger type pump |
| US5752811A (en) * | 1996-11-15 | 1998-05-19 | Petro; John P. | Linear actuator mechanism for converting rotary to linear movement including one end pulley Line attached to the stationary anchor and other end attached to the take-up drum |
| CN102155378B (en) * | 2011-03-17 | 2012-12-05 | 芜湖天乐分析仪器有限公司 | High-pressure constant current pump of liquid chromatograph |
| CN103437993B (en) * | 2013-09-16 | 2015-07-15 | 宁波富斯乐机械制造有限公司 | Self-sucking pump for high-pressure cleaner |
| CN103982390B (en) * | 2014-05-20 | 2016-05-04 | 西安交通大学 | The end surface cam type single cylinder micrometeor plunger displacement pump that a kind of servomotor directly drives |
| CN104088769A (en) * | 2014-08-01 | 2014-10-08 | 吉首大学 | Eccentric adjustable plunger pump |
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2015
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| CN104653426A (en) | 2015-05-27 |
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Effective date of registration: 20210105 Address after: 071800 no.051, zone 7, Xiheying village, Daying Town, Xiong County, Baoding City, Hebei Province Patentee after: Hebei xiongan Xinhui supreme Technology Co.,Ltd. Address before: 300384 No. 22, Jing Jing Road, Xiqing District, Tianjin Patentee before: Tianjin Agricultural University |
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Granted publication date: 20161012 Termination date: 20210120 |
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