CN215953648U - Flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing - Google Patents
Flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing Download PDFInfo
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- CN215953648U CN215953648U CN202122302471.6U CN202122302471U CN215953648U CN 215953648 U CN215953648 U CN 215953648U CN 202122302471 U CN202122302471 U CN 202122302471U CN 215953648 U CN215953648 U CN 215953648U
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Abstract
The utility model discloses a flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing, which comprises a rotary valve, a sampling needle, an ABC injection pump and an ABC three-way valve, washing tank, cylinder manifold and waste liquid collection device rotate the valve and include No. 0 position, No. 1 position, No. 2 position, and No. 1 position, No. 2 position distribute in rotating the valve outer fringe, and No. 0 position sets up at rotating the valve middle part, and ABC injection pump is connected respectively to the ABC three-way valve, and A three-way valve and C three-way valve, A three-way valve connection the sample needle, the No. 0 position of C three-way valve connection rotation valve, No. 1 position supply the solvent bottle to connect, No. 2 position connection outside air, washing tank are equipped with three and soak the station and supply the sample needle alternative to stretch into the washing, and the three export of soaking the station is connected to the cylinder manifold, respectively is equipped with pinch valve between the export of three soaking station and the cylinder manifold, and waste liquid collection device passes through the peristaltic pump and connects the cylinder manifold. A flow path of the scheme realizes multiple functions, is convenient to maintain and saves time and labor.
Description
Technical Field
The utility model belongs to the technical field of experimental instruments, and particularly relates to a flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing.
Background
The liquid treatment workstation uses a double syringe pump (hereinafter referred to as an A & B syringe pump) to transfer liquid, wherein the A syringe pump generally pumps mother liquid, and the B syringe pump generally pumps diluent. The volumes of the A syringe pump and the B syringe pump are usually different in magnitude. During the use, interior mark, external standard and mix the standard curve of mark and be different, need change the syringe pump of different capacity according to the demand in order to ensure the precision of moving the liquid, need the manual calibration syringe pump of professional with changing at every turn, the operation is wasted time and energy.
The needle is washed to the sampling needle mostly multistage washing tank washs, and peristaltic pump is taken to every washing tank. The cost is high, and the pump pipe of the peristaltic pump is a vulnerable part, and is inconvenient to maintain and repair in daily life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multi-channel and multi-stage flow path for diluting, separating and washing a needle, wherein one flow path realizes multiple functions, is convenient to maintain and saves time and labor.
In order to achieve the above purpose, the solution of the utility model is: a flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing comprises
The rotary valve comprises a plurality of stations including at least a 0-position, a 1-position and a 2-position, wherein the 1-position and the 2-position are distributed at the outer edge of the rotary valve, and the 0-position is arranged in the middle of the rotary valve;
a sampling needle;
an injection pump A, an injection pump B and an injection pump C;
the sampling probe comprises an A three-way valve, a B three-way valve and a C three-way valve, wherein the A three-way valve, the B three-way valve and the C three-way valve are respectively connected with an A injection pump, a B injection pump and a C injection pump, the B three-way valve is respectively connected with the A three-way valve and the C three-way valve, the A three-way valve is connected with the sampling probe, the C three-way valve is connected with a 0 th position of a rotating valve, the rotating valve is provided with a radial channel, the 0 th position and each 0 th position are communicated through the radial channel, the 1 st position is connected with a solvent bottle, and the 2 nd position is connected with outside air;
the cleaning tank is provided with three soaking stations for selecting a sampling needle to stretch into for cleaning;
the confluence plate is connected with the outlets of the three soaking stations, and pinch valves are respectively arranged between the outlets of the three soaking stations and the confluence plate;
and the waste liquid collecting device is connected with the outlet of the bus board through a peristaltic pump.
Further, the cleaning tank is also provided with a spraying station, the spraying station is provided with a nozzle, an outlet of the spraying station is connected with the collecting plate, and a pinch valve is arranged between the spraying station and the collecting plate; the rotary valve also comprises a 3-position, the 3-position is arranged on the outer edge of the rotary valve, and the 3-position is connected with the nozzle.
Further, still include dry gas circuit, set up in the entry lateral part of washing tank.
After the scheme is adopted, the utility model has the beneficial effects that:
the utility model adopts the three-way valve and the change-over valve to carry out high-precision multi-stage dilution and liquid separation between injection pumps with different channels and different magnitudes, overcomes the problem of precision calibration, adopts the same bus plate and the same peristaltic pump for the cleaning tank of the sampling needle, saves cost, is convenient to maintain, can respectively discharge waste according to requirements for a plurality of cleaning stations, and is convenient to use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the use state of the switching flow path a) of the three-way syringe pump of the utility model;
fig. 3 is a schematic view of the use state of the switching flow path b) of the three-way syringe pump of the utility model;
fig. 4 is a schematic view of the use state of the switching flow path c) of the three-way syringe pump of the utility model;
fig. 5 is a schematic view of the use state of the switching flow path d) of the three-way syringe pump of the utility model;
FIG. 6 is a schematic view showing the use state of the No. 1 soaking station cleaning of the sampling needle of the present invention;
FIG. 7 is a schematic view of the cleaning operation of the No. 2 soaking station of the sampling needle of the present invention;
FIG. 8 is a schematic view of the syringe pump of the present invention C in use;
FIG. 9 is a schematic view of the use state of the sampling needle in the cleaning of the spraying station;
FIG. 10 is a schematic view of the use of the sampling needle of the present invention in the top dry state above the cleaning bath.
Description of reference numerals:
the device comprises a rotary valve 1, a sampling needle 2, an A injection pump 3, a B injection pump 4, a C injection pump 5, an A three-way valve 6, a B three-way valve 7, a C three-way valve 8, a cleaning tank 9, a confluence plate 10, a peristaltic pump 11, a waste liquid collecting device 12, a drying gas circuit 13, a soaking station 14, a spraying station 15, a pinch valve 16 and a solvent bottle 17.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a multi-channel and multi-stage liquid dilution, liquid separation and needle washing flow path, which comprises a rotary valve 1, a sampling needle 2, an injection pump A3, an injection pump B4, an injection pump C5, a three-way valve A6, a three-way valve B7, a three-way valve C8, a cleaning tank 9, a confluence plate 10, a peristaltic pump 11, a waste liquid collecting device 12 and a drying gas path 13, as shown in figure 1.
The injection pump A3, the injection pump B4 and the injection pump C5 are three injectors with different magnitude volumes, such as 0.1ml, 1ml and 10ml, and are suitable for requirements of different attendant curves.
The rotary valve 1 comprises a plurality of stations including at least a 0 th position, a 1 st position, a 2 nd position and a 3 rd position, the 1 st position, the 2 nd position and the 3 rd position are distributed on the outer edge of the rotary valve 1, and the 0 th position is arranged in the middle of the rotary valve 1.
The injection device comprises an A three-way valve 6, a B three-way valve 7 and a C three-way valve 8, wherein the A three-way valve 6, the B three-way valve 7 and the C three-way valve 8 are respectively connected with an A injection pump 3, a B injection pump 4 and a C injection pump 5, the B three-way valve 7 is respectively connected with the A three-way valve 6 and the C three-way valve 8, the A three-way valve 6 is connected with the sampling needle 2, the C three-way valve 8 is connected with the 0 th position of the rotary valve 1, a radial channel is arranged on the rotary valve 1, the 0 th position and each th position are communicated through the radial channel, the 1 st position is connected with a solvent bottle 21, and the 2 nd position is connected with outside air;
the cleaning tank 9 is provided with three soaking stations 18 and a spraying station 19, the spraying station 19 is provided with a nozzle, the 3 rd station is connected with the nozzle, and the three soaking stations 18 are used for selecting one sampling needle 2 to stretch into the cleaning tank for cleaning.
The device comprises a collecting plate 10 at the outlets of three soaking stations 18 and a spraying station 19, pinch valves 20 are respectively arranged between the outlets of four stations (three soaking stations 18 and one spraying station 19) on the cleaning tank 9 and the collecting plate 10, and the outlet of the collecting plate 10 is connected with a waste liquid collecting device 12 through a peristaltic pump 11.
The flow path can realize three paths of injection pump switching flow paths, a multi-channel cleaning and waste liquid discharge flow path, an outer wall scouring cleaning flow path and a sampling needle outer wall air-blowing drying gas path, and respectively comprises the following specific steps:
the use process of the switching flow path of the first injection pump and the third injection pump is as follows: the No. 0 position is communicated with the No. 1 position,
a) as shown in fig. 2, the a three-way valve 6 is communicated with the a syringe pump 3 and the sampling needle 2 to pump and spit the solution, the B three-way valve 7 is not communicated with the B syringe pump 4, and the C three-way valve 8 is communicated with the C syringe pump 5 and the solvent bottle 21 to pump and spit the diluted solution/the cleaning solution;
b) as shown in fig. 3, the a three-way valve 6 communicates with the a syringe pump 3 and the sampling needle 2 to pump and spit the solution, the B three-way valve 7 communicates with the B syringe pump 4 and the C three-way valve 8, and the C three-way valve 8 communicates with the solvent bottle 21 to pump and spit the diluted solution/cleaning solution;
c) as shown in fig. 4, the a three-way valve 6 communicates with the sampling needle 2 and the B three-way valve 7, the B three-way valve 7 communicates with the B syringe pump 4 to pump and spit the solution, and the C three-way valve 8 communicates with the C syringe pump 5 and the solvent bottle 21 to pump and spit the diluted solution/cleaning solution;
d) as shown in fig. 5, the a three-way valve 6 communicates the sampling needle 2 and the B three-way valve 7, and the C three-way valve 8 communicates the B three-way valve 7 and the C syringe pump 5, thereby pumping and discharging the solution.
In general, all three-way valves are switched according to requirements, and on the premise of not replacing an injection pump, the utility model can realize four kinds of flexible and accurate liquid separation and dilution: a) the injection pump A3 pumps and spits the solution, the injection pump C5 pumps and spits the diluted solution/cleaning solution, B) the injection pump A3 pumps and spits the solution, the injection pump B4 pumps and spits the diluted solution/cleaning solution, C) the injection pump B4 pumps and spits the solution, the injection pump C5 pumps and spits the diluted solution/cleaning solution, and C) the injection pump C5 pumps and spits the solution.
Secondly, the use process of the multi-channel cleaning and waste liquid discharge flow path is as follows:
as shown in fig. 6, the sampling needle 2 extends into the No. 1 soaking station 18, after cleaning, when the No. 1 soaking station 18 needs to discharge waste liquid, the pinch valves 20 of other stations are closed, the pinch valve 20 of the No. 1 soaking station 18 is opened to be communicated with the confluence plate 10, the peristaltic pump 11 works, and the cleaning liquid of the No. 1 soaking station 18 is pumped out to the waste liquid collecting device 12 along with the negative pressure of the peristaltic pump 11. Fig. 7 shows that the sampling needle 2 extends into the No. 2 soaking station 18, after the cleaning is completed, the No. 2 soaking station 18 is in need of waste liquid discharge, the pinch valves 20 of other stations are closed, the pinch valve 20 of the No. 2 soaking station 18 is opened to be communicated with the collecting plate 10, the peristaltic pump 11 works, the cleaning liquid of the No. 2 soaking station 18 is pumped out into the waste liquid collecting device 12 along with the negative pressure of the peristaltic pump 11, the cleaning and waste discharge processes of all stations are analogized by the same method, the multistage cleaning tanks 9 share one peristaltic pump 11, each station is isolated through the pinch valve 20, liquid cross is blocked, the original function of independently discharging pump liquid of each cleaning tank 9 is realized, the cost is saved, and the maintenance is simpler.
Thirdly, when the interior of the cleaning tank 9 is cleaned, cleaning liquid is injected into the inner wall of the sampling needle 2 generally, the outer wall of the sampling needle 2 is soaked, the soaking time is long, meanwhile, stubborn attachments cannot be effectively removed, and the purpose of cleaning the sampling needle 2 to avoid cross contamination cannot be achieved, so that an outer wall scouring cleaning flow path is designed, and the using process of the outer wall scouring cleaning flow path is as follows:
as shown in fig. 8, the C three-way valve 8 communicates the C injection pump 5 and the solvent bottle 21, the 0 th position of the change-over valve communicates the 1 st position, the C injection pump 5 pumps a certain volume of cleaning solution, after the pumping, as shown in fig. 9, the change-over valve is switched to the 3 rd position, the C injection pump 5 pushes out the cleaning solution to the nozzle of the spraying station 19, and the cleaning solution is sprayed to the outer wall of the sampling needle 2 from the nozzle to wash the outer wall to effectively remove the liquid residue.
Fourth, the general cleaning tank 9 has no air blowing function, and the inner and outer walls of the sampling needle need to be cleaned before the sampling needle 2 sucks the mother liquor each time. The surface can hang liquid after washing, and when getting the mother liquor many times, the subsidiary hanging liquid of sampling needle outer wall can dilute the mother liquor, causes the concentration error of mother liquor, and then influences the whole precision of joining in marriage the liquid, and the utility model has designed 2 outer wall air-blowing dry gas circuits 13 of sampling needle, and 2 outer wall air-blowing dry gas circuits 13 of sampling needle use the process:
outer wall air-blowing drying gas circuit 13 sets up in the entry lateral part of washing tank 9, provides the air supply of certain atmospheric pressure, flow by an air pump, when being located the washing tank 9 top after 2 washs of sampling needle, starts the air pump, and gaseous via the trachea blow to 2 outer walls of sampling needle, carry out the table to 2 outer wall remaining hanging liquid of sampling needle and dry to the risk of dilution mother liquor when eliminating the sample.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made in the design key point of the present invention fall within the protection scope of the present invention.
Claims (3)
1. A flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing is characterized by comprising
The rotary valve comprises a plurality of stations including at least a 0-position, a 1-position and a 2-position, wherein the 1-position and the 2-position are distributed at the outer edge of the rotary valve, and the 0-position is arranged in the middle of the rotary valve;
a sampling needle;
an injection pump A, an injection pump B and an injection pump C;
the sampling probe comprises an A three-way valve, a B three-way valve and a C three-way valve, wherein the A three-way valve, the B three-way valve and the C three-way valve are respectively connected with an A injection pump, a B injection pump and a C injection pump, the B three-way valve is respectively connected with the A three-way valve and the C three-way valve, the A three-way valve is connected with the sampling probe, the C three-way valve is connected with a 0 th position of a rotating valve, the rotating valve is provided with a radial channel, the 0 th position and each 0 th position are communicated through the radial channel, the 1 st position is connected with a solvent bottle, and the 2 nd position is connected with outside air;
the cleaning tank is provided with three soaking stations for selecting a sampling needle to stretch into for cleaning;
the confluence plate is connected with the outlets of the three soaking stations, and pinch valves are respectively arranged between the outlets of the three soaking stations and the confluence plate;
and the waste liquid collecting device is connected with the outlet of the bus board through a peristaltic pump.
2. The multi-channel, multi-stage fluid dilution, liquid separation and needle wash flow path of claim 1, wherein: the cleaning tank is also provided with a spraying station, the spraying station is provided with a nozzle, the outlet of the spraying station is connected with a confluence plate, and a pinch valve is arranged between the spraying station and the confluence plate; the rotary valve also comprises a 3-position, the 3-position is arranged on the outer edge of the rotary valve, and the 3-position is connected with the nozzle.
3. The multi-channel, multi-stage fluid dilution, liquid separation and needle wash flow path of claim 1, wherein: the drying device further comprises a drying air path which is arranged on the side part of the inlet of the cleaning tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122302471.6U CN215953648U (en) | 2021-09-23 | 2021-09-23 | Flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122302471.6U CN215953648U (en) | 2021-09-23 | 2021-09-23 | Flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing |
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| Publication Number | Publication Date |
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| CN215953648U true CN215953648U (en) | 2022-03-04 |
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| CN202122302471.6U Active CN215953648U (en) | 2021-09-23 | 2021-09-23 | Flow path for multi-channel and multi-stage liquid dilution, liquid separation and needle washing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118091173A (en) * | 2024-04-29 | 2024-05-28 | 西安天隆科技有限公司 | Self-cleaning liquid filling device, integrated module, system and self-cleaning method |
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2021
- 2021-09-23 CN CN202122302471.6U patent/CN215953648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118091173A (en) * | 2024-04-29 | 2024-05-28 | 西安天隆科技有限公司 | Self-cleaning liquid filling device, integrated module, system and self-cleaning method |
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