CN112378710A - Automatic remove multichannel of bubble and select syringe pump - Google Patents
Automatic remove multichannel of bubble and select syringe pump Download PDFInfo
- Publication number
- CN112378710A CN112378710A CN202011471154.0A CN202011471154A CN112378710A CN 112378710 A CN112378710 A CN 112378710A CN 202011471154 A CN202011471154 A CN 202011471154A CN 112378710 A CN112378710 A CN 112378710A
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- Prior art keywords
- valve
- channel
- hole
- injection pump
- liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
The invention discloses a multi-channel selection injection pump capable of automatically removing bubbles, which consists of a multi-channel selection valve and an injection pump; the multi-channel selection valve comprises a motor, a valve stator and a valve rotor, wherein the valve stator is provided with a main hole, branch holes uniformly distributed by taking the main hole as the center of a circle, a liquid outlet hole and a groove 1 communicated with the liquid outlet hole, and the valve rotor is provided with a groove 2 communicated with the main hole of the valve stator and each branch hole and a groove 3 communicated with the groove 1; the injection pump comprises a pump sleeve, a plunger rod and a motor, the pump sleeve is a cylindrical pipe hermetically connected with the multi-channel selection valve, and a cavity of the injection pump is respectively communicated with a main hole and a liquid outlet hole of the valve stator through a channel in the valve stator to form a liquid pumping channel and a liquid drainage channel; the multi-channel selection valve and the injection pump are designed into a whole, so that connecting parts can be reduced, the quantitative precision is improved, and the liquid pumping channel and the liquid discharging channel of the injection pump are separately designed, so that the phenomenon that bubbles in a cavity of a single-channel injection pump cannot be completely discharged can be prevented.
Description
Technical Field
The invention relates to a liquid precise quantitative preparation technology, in particular to a multi-channel selection injection pump capable of automatically removing bubbles.
Background
For precision analysis instruments, accurate sampling and quantification are a key factor determining the performance of the instrument, and a method of sampling and quantifying by combining a syringe pump and a multi-channel selection valve into various precision instruments is widely used.
However, during the use process, the combination method still has a problem: the injection pump generally is the same entrance of business turn over liquid sharing, the sample is followed same hole site business turn over, in the use, accurate injection pump is when extracting liquid, if there is a small amount of bubbles to sneak into the injection pump cavity, then the bubble of sneaking into gathers at cavity top edge, when flowing back, the bubble of gathering at cavity top edge can be pushed to in the connecting tube that is not far away from business turn over liquid mouth after the liquid in the cavity is exhausted, when taking a sample next time by the injection pump cavity again, lead to the bubble of persisting to relapse at connecting tube and injection pump intracavity removal, the ration system of unable discharge, because the air is easy to be compressed, thereby reduce the ration accuracy of accurate injection pump.
In order to solve the problems and ensure the quantitative precision of the precision injection pump, the multi-channel selection injection pump is creatively designed into a double-channel structure with a liquid pumping channel and a liquid discharging channel separated, when the multi-channel selection injection pump works, a sample is quantitatively pumped from the liquid pumping channel, and the sample is completely pushed out from the liquid discharging channel, even if bubbles are mixed in a liquid inlet channel or a cavity of the injection pump, the bubbles and the sample can be completely pushed out from the liquid discharging channel when the sample is pushed, and the bubbles are not contained in the liquid inlet channel and the cavity of the injection pump when the next liquid inlet is quantitative.
Disclosure of Invention
In order to achieve the above object, the present invention provides an automatic de-bubbling multi-channel selective syringe pump, which is characterized in that: the multi-channel selection injection pump consists of a multi-channel selection valve and an injection pump; the multi-channel selection valve is composed of a motor, a valve stator and a valve rotor, wherein the valve stator is provided with a main hole, a plurality of branch holes which are uniformly distributed by taking the main hole as the center of a circle, a liquid outlet hole and a groove 1 which is communicated with the liquid outlet hole, and the valve rotor is provided with a groove 2 which can communicate the main hole of the valve stator with each branch hole and a groove 3 which can be communicated with the groove 1; the injection pump comprises a pump sleeve, a plunger rod and a motor, the pump sleeve is a cylindrical pipe hermetically connected with the multi-channel selection valve, and a cavity of the injection pump is respectively communicated with a main hole and a liquid outlet hole of the valve stator through a channel in the valve stator to form a liquid pumping channel and a liquid drainage channel; when the multi-channel liquid injection pump is used, the channel 2 is switched to be communicated with a certain branch hole by the multi-channel selection valve, after the injection pump quantitatively pumps liquid from the corresponding branch hole, the channel 1 is switched to be communicated with the channel 3 by the multi-channel selection valve, and the liquid outlet hole on the valve stator is communicated with the adjacent branch hole, and the liquid in the cavity is pushed to the liquid outlet hole of the valve stator from the liquid discharge channel by the injection pump and is finally pushed out from the branch hole which is adjacent to and communicated with the liquid outlet hole.
Further, the length L of the groove 2 on the valve plate1Should satisfy L1= bore diameter D1+ major bore diameter D2+L2。
Furthermore, the length of the groove 1 on the valve stator and the length of the groove 3 on the valve rotor are smaller than the distance L from the liquid outlet hole on the valve stator to the adjacent branch hole3And the length of the two grooves is not less than the distance L from the liquid outlet hole to the adjacent branch hole on the valve stator3+ branch hole diameter D1+ diameter of liquid outlet D3。
Compared with the prior art, the invention has the following advantages:
the multi-channel selection valve and the injection pump are designed into a whole, so that connecting parts can be reduced, the quantitative precision is improved, and the liquid pumping channel and the liquid discharging channel of the injection pump are separately designed, so that the phenomenon that bubbles in a cavity of a single-channel injection pump cannot be completely discharged can be prevented.
Drawings
FIG. 1 is a schematic perspective view of the present invention
FIG. 2 is a schematic view of the valve stator structure of the present invention
FIG. 3 is a schematic view of the structure of the valve moving plate of the present invention
FIG. 4 is a schematic view showing the communication state between the trench 2 and the branch hole according to the present invention
FIG. 5 is a schematic view showing the communication state between the grooves 1 and 3 according to the present invention
In the figure, 1-valve stator, 2-valve rotor, 3-valve stator main hole, 4-valve stator branch hole, 5-liquid outlet hole, 6-groove 1, 7-groove 2, 8-groove 3, 9-pump sleeve, 10-plunger rod, 11-liquid pumping channel, 12-liquid discharging channel, 13-liquid outlet end, 14-liquid inlet end and 15-liquid inlet end.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The drawings in the present invention only schematically show the structural schematic diagrams of the components, and do not show other key components, such as control components and power supply components, which are required in the operation process of the present invention, but those skilled in the art can understand that other components not shown are also necessary components for implementing the functions of the present invention, and therefore, the following description and examples will not describe this component.
As shown in fig. 1, 2 and 3, the multi-channel selective injection pump capable of automatically removing bubbles is characterized in that: the multi-channel selection injection pump consists of a multi-channel selection valve and an injection pump; the multichannel selection valve is composed of a motor, a valve stator (1) and a valve moving plate (2), wherein the valve stator is provided with a main hole (3), a plurality of branch holes (4) which are uniformly distributed by taking the main hole as the center of a circle, a liquid outlet hole (5) and a groove (1) (6) communicated with the liquid outlet hole, and the valve moving plate is provided with a groove (2) (7) which can communicate the main hole of the valve stator with each branch hole and a groove (3) (8) which can communicate with the groove (1); the injection pump comprises a pump sleeve (9), a plunger rod (10) and a motor, wherein the pump sleeve (9) is a cylindrical pipe hermetically connected with the multi-channel selection valve, and a cavity of the injection pump is respectively communicated with a main hole and a liquid outlet hole of the valve stator through a channel in the valve stator to form a liquid pumping channel (11) and a liquid drainage channel (12); the multi-channel selection valve is connected with the injection pump in a sealing mode.
When the multi-channel selection valve is used, as shown in figure 4, the groove 2 (7) is switched to be communicated with a certain branch hole by the multi-channel selection valve, and after the injection pump quantitatively pumps liquid from the corresponding branch hole, as shown in figure 5, the groove 1 (6) is switched to be communicated with the groove 3 (8) and the liquid outlet hole on the valve stator is communicated with the adjacent branch hole by the multi-channel selection valve, and the liquid in the cavity is pushed to the liquid outlet hole (5) of the valve stator from the liquid outlet channel (12) by the injection pump and is finally pushed out from the branch hole adjacent to and communicated with the liquid outlet hole.
Claims (3)
1. The utility model provides an automatic remove multichannel selection syringe pump of bubble which characterized in that: the multi-channel selection injection pump consists of a multi-channel selection valve and an injection pump; the multi-channel selection valve is composed of a motor, a valve stator and a valve rotor, wherein the valve stator is provided with a main hole, a plurality of branch holes which are uniformly distributed by taking the main hole as the center of a circle, a liquid outlet hole and a groove 1 which is communicated with the liquid outlet hole, and the valve rotor is provided with a groove 2 which can communicate the main hole of the valve stator with each branch hole and a groove 3 which can be communicated with the groove 1; the injection pump comprises a pump sleeve, a plunger rod and a motor, the pump sleeve is a cylindrical pipe hermetically connected with the multi-channel selection valve, and a cavity of the injection pump is respectively communicated with a main hole and a liquid outlet hole of the valve stator through a channel in the valve stator to form a liquid pumping channel and a liquid drainage channel; when the multi-channel liquid injection pump is used, the channel 2 is switched to be communicated with a certain branch hole by the multi-channel selection valve, after the injection pump quantitatively pumps liquid from the corresponding branch hole, the channel 1 is switched to be communicated with the channel 3 by the multi-channel selection valve, and the liquid outlet hole on the valve stator is communicated with the adjacent branch hole, and the liquid in the cavity is pushed to the liquid outlet hole of the valve stator from the liquid discharge channel by the injection pump and is finally pushed out from the branch hole which is adjacent to and communicated with the liquid outlet hole.
2. An automatic de-bubbling multi-channel selective syringe pump according to claim 1, wherein: the length L of the groove 2 on the valve moving plate1Should satisfy L1= bore diameter D1+ major bore diameter D2+L2。
3. An automatic de-bubbling multi-channel selective syringe pump according to claim 1, wherein: the lengths of the groove 1 on the valve stator and the groove 3 on the valve moving plate are smaller than the distance L from the liquid outlet hole on the valve stator to the adjacent branch hole3And the length of the two grooves is not less than the distance L from the liquid outlet hole to the adjacent branch hole on the valve stator3+ branch hole diameter D1+ diameter of liquid outlet D3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471154.0A CN112378710A (en) | 2020-12-15 | 2020-12-15 | Automatic remove multichannel of bubble and select syringe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471154.0A CN112378710A (en) | 2020-12-15 | 2020-12-15 | Automatic remove multichannel of bubble and select syringe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112378710A true CN112378710A (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011471154.0A Pending CN112378710A (en) | 2020-12-15 | 2020-12-15 | Automatic remove multichannel of bubble and select syringe pump |
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| Country | Link |
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| CN (1) | CN112378710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115015567A (en) * | 2022-08-05 | 2022-09-06 | 南京纳摩尔仪器有限公司 | Ceramic 3D tunnel type analysis module |
| CN115266613A (en) * | 2022-08-10 | 2022-11-01 | 江苏德林环保技术有限公司 | Detection system based on ceramic 3D tunnel integrated chip and use method thereof |
-
2020
- 2020-12-15 CN CN202011471154.0A patent/CN112378710A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115015567A (en) * | 2022-08-05 | 2022-09-06 | 南京纳摩尔仪器有限公司 | Ceramic 3D tunnel type analysis module |
| CN115266613A (en) * | 2022-08-10 | 2022-11-01 | 江苏德林环保技术有限公司 | Detection system based on ceramic 3D tunnel integrated chip and use method thereof |
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