CN109538439A - A kind of liquid chromatograph high pressure constant flow pump - Google Patents
A kind of liquid chromatograph high pressure constant flow pump Download PDFInfo
- Publication number
- CN109538439A CN109538439A CN201811139731.9A CN201811139731A CN109538439A CN 109538439 A CN109538439 A CN 109538439A CN 201811139731 A CN201811139731 A CN 201811139731A CN 109538439 A CN109538439 A CN 109538439A
- Authority
- CN
- China
- Prior art keywords
- liquid
- constant flow
- high pressure
- controller
- pressure constant
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The present invention provides a kind of liquid chromatograph high pressure constant flow pump, including the pump housing and pump cover, the front side wall of pump cover is equipped with front panel, the pump housing is installed on front panel, and servo motor, cam and inlet and liquid outlet, the output axis connection cam of servo motor are equipped in the pump housing, and then drive cam rotation, it is connected with feed liquor hose on inlet, flowmeter is connected on liquid outlet, the another port of flowmeter is connected with out liquid hose；Front panel is equipped with touch screen, and power switch button, packing key and data display screen are equipped in touch screen；Controller is equipped in pump cover, pump cover is externally provided with floor push, and floor push is electrical contact switch, and power switch button, packing key, floor push and flowmeter are separately connected controller, and controller is separately connected servo motor and data display screen.The present invention can be achieved steadily to dispense the liquid that goes out of constant flow pump, reduce artificial workload, operation is light, and good operating stability.
Description
Technical field
The present invention relates to a kind of liquid chromatograph high pressure constant flow pumps.
Background technique
Liquid chromatograph is the instrument that separation analysis is carried out to solution example, can be used for liquid or be dissolved in the solid of liquid
Sample carries out constant or micro-analysis detection.Liquid chromatograph is mainly by sampling system, transfusion system, separation system, detection system
The part such as system and data processing system forms, and wherein the capital equipment in transfusion system is high pressure constant flow pump.Liquid chromatograph by
High pressure constant flow pump exports mobile phase, and high pressure constant flow pump is a composition portion of crucial importance and relatively independent in liquid chromatograph
Point.Existing liquid chromatograph high pressure constant flow pump in use, occur repeatedly pressing the amount feed liquor of setting and out liquid, to carry out sometimes
It repeats to detect, and goes out the requirement that liquid is retained separately to each time, existing liquid chromatograph high pressure constant flow pump is usually in pump cover
Hand push button is set on front panel, for selecting the operating mode of liquid packing, needs when use to hold out liquid hose pair on the other hand
Quasi- separation container, and moved above different separation containers, another hand repeatedly presses the hand push button of packing, operation
Inconvenience, it is time-consuming and laborious, liquid hose is moved out with hand for a long time, action stability is poor, liquid easily occurs and spill to splash phenomenon.
Summary of the invention
The object of the present invention is to provide a kind of liquid chromatograph high pressure constant flow pumps, reduce manual steps, can stablize, gently
Pine, accurately to fluid dispenser.
The present invention provides the following technical solutions:
A kind of liquid chromatograph high pressure constant flow pump, including the pump housing and pump cover, the front side wall of pump cover are equipped with front panel, pump housing peace
Loaded on front panel, servo motor, cam and inlet and liquid outlet, the output axis connection of servo motor are equipped in the pump housing
Cam, and then drive cam rotation, is connected with feed liquor hose on inlet, is connected with flowmeter on liquid outlet, flowmeter it is another
Single port is connected with out liquid hose；Front panel is equipped with touch screen, and power switch button, packing key sum number are equipped in touch screen
According to display screen；Controller is equipped in pump cover, pump cover is externally provided with floor push, and floor push is electrical contact switch, and power switch is pressed
Key, packing key, floor push and flowmeter are separately connected controller, and controller is separately connected servo motor and data are shown
Screen.
Preferably, be additionally provided with horizontal sliding slot on front panel, be equipped in sliding slot with the matched sliding block of sliding slot, sliding block can be in cunning
It is moved in slot；Clamp ring is connected on front side of sliding block, liquid hose is fixed in clamp ring out.After liquid hose out is fixed in clamp ring,
It only needs to push sliding block, drives clamp ring and liquid hose is moved along sliding slot out, will can successively go out liquid hose and be directed at each packing appearance
Device mouth, is dispensed, and does not need artificial liquid hose out hand-held always, therefore operate more easily laborsaving.
Preferably, clamp ring is elastic silica gel material, so as to clamp out liquid hose, and can be suitably used for going out for different tube diameters
Liquid hose.
Preferably, it is additionally provided with slider-actuated motor in pump cover, controller connection sliding block driving motor, slider-actuated motor
Output shaft connection gear is engaged with rack gear above gear, and rack gear is fixedly connected on the rear side of sliding block；Controller can be according to foot-operated
The input signal of switch, intermittently rotate gear, the rack gear that gear driving engages make straight line to control slider-actuated motor
It is mobile, so that rack-driving sliding block be made to move in sliding slot.After operator tramples floor push, controller receives foot-operated
The input signal of switch, and then control the angle that sliding driving motor sliding tooth wheel rotates a setting, gear drive rack gear edge
Sliding slot move linearly, then sliding block drives clamp ring to be moved to the top of another separation container, and it is dynamic to carry out next packing
It recycles.
Preferably, slider-actuated motor is stepper motor.When separation container is equally spacedly placed on the brackets such as rack for test tube
When, the primary delivery stroke of the every movement of stepper motor is equal, convenient for accurate stable controls the moving distance of clamp ring.
Preferably, clamp ring is fixed on close to the exit position for going out liquid hose, flows into separation container to increase liquid
Accuracy avoids liquid hose out flexible from generating and shakes and liquid is caused to spill separation container.
Preferably, the invention also includes workbench, pump cover is placed on workbench, and floor push is located at below workbench,
Operator is facilitated to trample floor push with foot.
Preferably, the side wall of pump cover is equipped with data line interface connected to the controller, and floor push is pacified by data line
Loaded on data line interface.Floor push is installed on control unit interface by data line, thus when not need packing liquid or
When person's movement liquid chromatograph, facilitate floor push by being disassembled on constant flow pump.
The beneficial effects of the present invention are:
1, packing key, floor push, flowmeter and controller collective effect of the invention are, it can be achieved that go out constant flow pump
Liquid is steadily dispensed, and reduces the workload of artificial hand, operation is light, and good operating stability.
2, it is intermittent by the distance of setting can to clamp out liquid hose automatically for sliding block of the invention, clamp ring and slider-actuated motor
Ground enters liquid subpackage in container, does not need manual operation and goes out liquid hose, packing result is reliable and stable, easy to operate.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the side structure schematic view of sliding block and slider-actuated motor junction of the invention；
Fig. 3 is control principle schematic diagram of the invention.
In the figure, it is marked as 1. pump housings；11. servo motor；12. inlet；13. liquid outlet；14. feed liquor hose；15. going out liquid
Hose；16. flowmeter；2. pump cover；21. front panel；22. power switch button；23. dispensing key；24. data display screen；25.
Sliding slot；26. sliding block；27. clamp ring；28. rack gear；29. data line interface；3. controller；4. floor push；5. slider-actuated is electric
Machine；6. gear；7. workbench；8. liquid container；9. separation container.
Specific embodiment
As shown in figures 1 and 3, a kind of liquid chromatograph high pressure constant flow pump, including the pump housing 1 and pump cover 2, the front side of pump cover 2
Wall is equipped with front panel 21, and the pump housing 1 is installed on front panel 21, be equipped in the pump housing 1 servo motor 11, cam (not shown),
And inlet 12 and liquid outlet 13, the output axis connection cam of servo motor 11, and then cam rotation is driven, on inlet 12
It is connected with feed liquor hose 14, flowmeter 16 is connected on liquid outlet 13, the another port of flowmeter 16 is connected with out liquid hose 15；
Front panel 21 is equipped with touch screen, and power switch button 22, packing key 23 and data display screen 24 are equipped in touch screen；Pump cover
Controller 3 is equipped in 2, pump cover 2 is externally provided with floor push 4, and floor push 4 is electrical contact switch, power switch button 22, packing
Key 23, floor push 4 and flowmeter 16 are separately connected controller 3, and controller 3 is separately connected servo motor 11 and data are shown
Screen 24.
As depicted in figs. 1 and 2, it is also horizontally equipped with sliding slot 25 on front panel 21, is equipped in sliding slot 25 and is matched with sliding slot 25
Sliding block 26, sliding block 26 can move in sliding slot 25；The front side of sliding block 26 is connected with clamp ring 27, and liquid hose 15 is fixed on clamp ring out
In 27.
Clamp ring 27 is elastic silica gel material, so as to clamp out liquid hose 15, and can be suitably used for the liquid out of different tube diameters
Hose.
As shown in Figures 2 and 3, slider-actuated motor 5 is additionally provided in pump cover 2,3 connection sliding block driving motor 5 of controller is sliding
The output shaft connection gear 6 of block driving motor 5, the top of gear 6 are engaged with rack gear 28, and rack gear 28 is fixedly connected on sliding block 26
Rear side；Controller 3 can control intermittently rotate gear 6 of slider-actuated motor 5, gear according to the input signal of floor push 4
The rack gear 28 that 6 drivings engage moves linearly, so that 28 driving block 26 of rack gear be made to move in sliding slot 25.
Slider-actuated motor 5 is stepper motor.
As shown in Figure 1, clamp ring 27 is fixed on the exit position close to liquid hose out on liquid hose 15 out.
The invention also includes workbench 7, pump cover 2, liquid container 8 and separation container 9 are respectively placed on workbench 7, foot
Step on the lower section that switch 4 is located at workbench 7.
The side wall of pump cover 2 is equipped with the data line interface 29 connecting with controller 3, and floor push 4 is installed by data line
In on data line interface 29.
When needing to dispense experimental liquid, liquid container is placed below the feed liquor hose of workbench, under liquid hose out
Multiple separation containers are equally spacedly placed side by side by side, set each dispensed loading amount, i.e., the primary liquid out of every packing on the touchscreen
Flow resets each delivery stroke of slider-actuated motor, i.e. the primary distance of the every movement of clamp ring, distance corresponds to adjacent two
The distance between a separation container；Then, power switch button and packing key are pressed, servo motor and cam are started to work,
Liquid is delivered in first separation container by liquid container with current constant mode, the flowmeter at liquid outlet records out liquid in real time
Flow value and to controller output should go out liquid stream magnitude, when detect go out liquid stream magnitude reach the setting value of dispensed loading amount when,
Controller control servo motor stops working, while controlling the start-up operation of slider-actuated motor, and driving clamp ring drives out liquid hose
End be moved to the top of second separation container, at this point, slider-actuated motor pause acts, operator steps on foot-operated open
It closes, after controller receives the signal of floor push, automatically controls servo motor and start to work, repeat to follow into next packing
Ring.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of liquid chromatograph high pressure constant flow pump, which is characterized in that including the pump housing and pump cover, the front side wall of the pump cover is equipped with
Front panel, the pump housing are installed on the front panel, and servo motor, cam, inlet and liquid outlet are equipped in the pump housing,
Cam described in the output axis connection of the servo motor is connected with feed liquor hose on the inlet, connects on the liquid outlet
There is flowmeter, the another port of the flowmeter is connected with out liquid hose；The front panel is equipped with touch screen, the touch screen
Inside it is respectively equipped with power switch button, packing key and data display screen；Controller, the pump cover peripheral hardware are equipped in the pump cover
There is floor push, the floor push is electrical contact switch, and the power switch button, the packing key, described ride are opened
It closes and the flowmeter is separately connected the controller, the controller is separately connected the servo motor and the data are shown
Screen.
2. liquid chromatograph high pressure constant flow pump according to claim 1, which is characterized in that be additionally provided with water on the front panel
Flat sliding slot, interior be equipped with of the sliding slot can move with the matched sliding block of the sliding slot, the sliding block in the sliding slot；The cunning
Clamp ring is connected on front side of block, the liquid hose out is fixed in the clamp ring.
3. liquid chromatograph high pressure constant flow pump according to claim 2, which is characterized in that the clamp ring is flexible silicon glue material
Matter.
4. liquid chromatograph high pressure constant flow pump according to claim 2, which is characterized in that be additionally provided with sliding block in the pump cover
Driving motor, the controller connect the slider-actuated motor, and the output shaft of the slider-actuated motor is connected with gear, institute
It states and is engaged with rack gear above gear, the rack gear is fixedly connected on the rear side of the sliding block；The controller can be according to described
The input signal of floor push controls the slider-actuated motor and rotates the gear.
5. liquid chromatograph high pressure constant flow pump according to claim 4, which is characterized in that the slider-actuated motor is step
Into motor.
6. liquid chromatograph high pressure constant flow pump according to claim 2, which is characterized in that the clamp ring be fixed on it is described go out
Close to the exit position of the liquid hose out on liquid hose.
7. liquid chromatograph high pressure constant flow pump according to claim 1, which is characterized in that it further include workbench, the pump
Lid is placed on the workbench, and the floor push is located at the lower section of the workbench.
8. liquid chromatograph high pressure constant flow pump according to claim 7, which is characterized in that the side wall of the pump cover is equipped with
The data line interface connecting with the controller, the floor push are installed on the data line interface by data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139731.9A CN109538439B (en) | 2018-09-28 | 2018-09-28 | High-pressure constant flow pump of liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139731.9A CN109538439B (en) | 2018-09-28 | 2018-09-28 | High-pressure constant flow pump of liquid chromatograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538439A true CN109538439A (en) | 2019-03-29 |
| CN109538439B CN109538439B (en) | 2020-01-10 |
Family
ID=65841231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811139731.9A Active CN109538439B (en) | 2018-09-28 | 2018-09-28 | High-pressure constant flow pump of liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538439B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022120553A1 (en) * | 2020-12-08 | 2022-06-16 | 江苏同济分析仪器有限公司 | High-voltage constant-current pump for liquid chromatograph |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208432U (en) * | 1986-11-29 | 1987-10-07 | 中国人民解放军第五医院 | Multi-functional and automatic inject & suck tool for crystal cortex |
| CN202900565U (en) * | 2012-11-12 | 2013-04-24 | 姜堰市环球仪器有限公司 | Portable constant flow pump |
| EP2851684A1 (en) * | 2013-09-24 | 2015-03-25 | Labomatic Instruments Ag | Method and device for identifying fractions in a fraction collector of a liquid chromatograph |
| CN107372033A (en) * | 2017-07-26 | 2017-11-24 | 河海大学 | Constant current frequency conversion irrigation system |
| CN207294146U (en) * | 2017-09-30 | 2018-05-01 | 河北京鼎生物医药科技有限公司 | Self-suction type liquid-filling machine |
-
2018
- 2018-09-28 CN CN201811139731.9A patent/CN109538439B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208432U (en) * | 1986-11-29 | 1987-10-07 | 中国人民解放军第五医院 | Multi-functional and automatic inject & suck tool for crystal cortex |
| CN202900565U (en) * | 2012-11-12 | 2013-04-24 | 姜堰市环球仪器有限公司 | Portable constant flow pump |
| EP2851684A1 (en) * | 2013-09-24 | 2015-03-25 | Labomatic Instruments Ag | Method and device for identifying fractions in a fraction collector of a liquid chromatograph |
| CN107372033A (en) * | 2017-07-26 | 2017-11-24 | 河海大学 | Constant current frequency conversion irrigation system |
| CN207294146U (en) * | 2017-09-30 | 2018-05-01 | 河北京鼎生物医药科技有限公司 | Self-suction type liquid-filling machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022120553A1 (en) * | 2020-12-08 | 2022-06-16 | 江苏同济分析仪器有限公司 | High-voltage constant-current pump for liquid chromatograph |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538439B (en) | 2020-01-10 |
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