CN205478155U - High -pressure infusion pump - Google Patents
High -pressure infusion pump Download PDFInfo
- Publication number
- CN205478155U CN205478155U CN201620285887.8U CN201620285887U CN205478155U CN 205478155 U CN205478155 U CN 205478155U CN 201620285887 U CN201620285887 U CN 201620285887U CN 205478155 U CN205478155 U CN 205478155U
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- check valve
- pump chamber
- driving
- 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
Abstract
The present case is a high -pressure infusion pump, and its characterized in that includes: the motor, first driving pump, the second driving pump, first check valve, the second check valve, first plunger, the second plunger, first pump chamber, the second pump chamber, pressure sensor, the damping of pulsation ware, the third check valve, the fourth check valve, wherein, the motor is used for driving first driving pump, second driving pump, first driving pump passes through first check valve is connected to first plunger, first plunger has first pump chamber, the second driving pump passes through the second check valve is connected to the second plunger, the second plunger is connected to the second pump chamber, pass through between second pump chamber one end and the first pump chamber one end the connection that communicates with each other of third check valve, the second pump chamber other end is connected with the fourth check valve, the first pump chamber other end is equipped with pressure sensor, damping of pulsation ware.
Description
Technical field
This utility model relates to a kind of high pressure pump.
Background technology
High pressure pump is significant element parts in chromatograph of liquid analysis system, for flowing mutually and sample
Product are input in chromatographic column and detector.High pressure pump has two types, constant flow pump i.e. typically referred to as
And constant pressure pump, constant flow pump provides steady constant flow rate.The quality of high pressure pump performance directly affects whole instrument
Device and the reliability of analysis result.Therefore high-pressure pump must possess stability of flow, output pressure height, flow
Wide ranges, acid and alkali-resistance ease up dissolved corrosion, pressure oscillation is little, be readily cleaned and change the performances such as solvent.
Most popular in prior art is reciprocating pump, by driven by motor eccentric, makes plunger do past
Multiple motion, thus liquid phase is transported in chromatographic column, but reciprocating plunger pump to the wearability of sealing ring and
Rigidity and the required precision of check valve are the highest, so that its easily damaged and increase difficulty of processing.
Utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of transfusion the highest
Pressure infuser pump.
For achieving the above object, this utility model is achieved through the following technical solutions:
A kind of high pressure pump, including: motor 1, first drives pump 2, and second drives pump 3, and first is single
To valve 4, the second check valve 5, the first plunger 6, the second plunger 7, the first pump chamber 8, the second pump chamber 9,
Pressure transducer 10, ripple damper 11, the 3rd check valve 12, the 4th check valve 13, wherein, institute
State motor and pass through described first list for driving the first driving pump, the second driving pump, described first driving pump
Being connected to described first plunger to valve, the first plunger has described first pump chamber；Described second drives pump
Being connected to described second plunger by described second check valve, the second plunger is connected to described second pump chamber,
It is connected by described 3rd check valve between described second pump chamber one end and first pump chamber one end, described
The second pump chamber other end connects has described 4th check valve, the described first pump chamber other end to be provided with described pressure
Sensor, ripple damper.
Preferably, described high pressure pump, wherein, described first pump chamber is less than described second
Pump chamber.
Preferably, described high pressure pump, wherein, described first plunger, the second plunger use outstanding
Floating plunger rod.
The beneficial effects of the utility model: this case is provided with two driving pumps, use a motor in synchrony same
Time drive two pumps, the most durable, service life is long, double plunger flow accuracy improves, Duo Gedan
Make, wherein in the case of 1-2 failure of check valve, to remain able to normally use to valve, it is not necessary to wait
All check valves rerun after all fixing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high pressure pump described in this utility model one embodiment.
Wherein, 1-motor, 2-first drives pump, and 3-second drives pump, 4-the first check valve, 5-second
Check valve, 6-the first plunger, 7-the second plunger, 8-the first pump chamber, 9-the second pump chamber, 10-pressure sensing
Device, 11-ripple damper, 12-the 3rd check valve, 13-the 4th check valve.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art
Can implement according to this with reference to description word.
A kind of high pressure pump, refers to accompanying drawing 1, including: motor 1, first drives pump 2, and second drives
Dynamic pump 3, the first check valve 4, the second check valve 5, the first plunger 6, the second plunger 7, the first pump chamber 8,
Second pump chamber 9, pressure transducer 10, ripple damper 11, the 3rd check valve 12, the 4th check valve
13, wherein, described motor is for driving the first driving pump, the second driving pump, and described first drives pump to lead to
Crossing described first check valve and be connected to described first plunger, the first plunger has described first pump chamber；Institute
Stating the second driving pump and be connected to described second plunger by described second check valve, the second plunger is connected to institute
State the second pump chamber, by described 3rd check valve phase between described second pump chamber one end and first pump chamber one end
Leading to connect, the described second pump chamber other end connects described 4th check valve, the described first pump chamber other end
It is provided with described pressure transducer, ripple damper.When in this case, the second plunger drives the second pump chamber discharge opeing,
Partially liq is input in chromatographic column, and additionally partially liq is accumulated by the first pump chamber, when the second pump chamber imbibition,
First plunger drives the first pump chamber to be inputted in chromatographic column by the partially liq of former accumulation again.
Further, described first pump chamber is less than described second pump chamber.
Further, described first plunger, the second plunger use suspension plunger rod.
Although embodiment of the present utility model is disclosed as above, but it is not restricted to description and reality
Executing listed in mode utilization, it can be applied to various applicable field of the present utility model completely, for
For those skilled in the art, it is easily achieved other amendment, therefore without departing substantially from claim
And under the general concept that limited of equivalency range, this utility model is not limited to specific details and shows here
The legend gone out and describe.
Claims (3)
1. a high pressure pump, it is characterised in that including: motor, first drives pump, and second drives
Pump, the first check valve, the second check valve, the first plunger, the second plunger, the first pump chamber, the second pump chamber,
Pressure transducer, ripple damper, the 3rd check valve, the 4th check valve, wherein, described motor is used for
Driving the first driving pump, the second driving pump, described first drives pump to be connected to by described first check valve
Described first plunger, the first plunger has described first pump chamber；Described second drives pump by described the
Two check valves are connected to described second plunger, and the second plunger is connected to described second pump chamber, described second pump
Being connected by described 3rd check valve between one end, chamber and first pump chamber one end, described second pump chamber is another
One end connects has described 4th check valve, the described first pump chamber other end to be provided with described pressure transducer, arteries and veins
Fluctuation dampers.
2. high pressure pump as claimed in claim 1, it is characterised in that described first pump chamber is little
In described second pump chamber.
3. high pressure pump as claimed in claim 1, it is characterised in that described first plunger, second
Plunger uses suspension plunger rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620285887.8U CN205478155U (en) | 2016-04-08 | 2016-04-08 | High -pressure infusion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620285887.8U CN205478155U (en) | 2016-04-08 | 2016-04-08 | High -pressure infusion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478155U true CN205478155U (en) | 2016-08-17 |
Family
ID=56644607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620285887.8U Expired - Fee Related CN205478155U (en) | 2016-04-08 | 2016-04-08 | High -pressure infusion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478155U (en) |
-
2016
- 2016-04-08 CN CN201620285887.8U patent/CN205478155U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170408 |