CN210952994U

CN210952994U - Liquid volume quantifying device

Info

Publication number: CN210952994U
Application number: CN201921845842.1U
Authority: CN
Inventors: 钱瑜; 党小锋; 刘全义
Original assignee: Suzhou Weishui Environmental Protection Technology Co ltd
Current assignee: Suzhou Weishui Environmental Protection Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-07
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a liquid volume proportioning device, include: the pipeline and locate first power unit, first sensor, first three-way solenoid valve, second sensor and the reaction tank on the pipeline in proper order, first power unit is used for injecting liquid into the pipeline, the pipeline between first three-way solenoid valve and the second three-way solenoid valve is quantitative pipeline, first three-way solenoid valve external be used for to the gaseous second power unit of impressing in the quantitative pipeline. The liquid volume quantifying device of the utility model has low requirements on the material and transparency of the pipeline, can adopt the materials of plastics, metals and the like, reduces the cost and is easy to popularize; the response is sensitive, the measurement is accurate, and the liquid volume can be ensured to be the volume of the quantitative pipeline all the time.

Description

Liquid volume quantifying device

Technical Field

The utility model belongs to the technical field of measure, especially, relate to a liquid volume proportioning device.

Background

The liquid quantitative technology is widely applied to quantitative filling of hospital preparation rooms, ampoules, eye drops, various oral liquids, shampoos and various water aqua; meanwhile, the liquid quantitative continuous liquid adding device can also be used for quantitatively and continuously adding various liquids in various chemical analysis tests, and is particularly suitable for liquid subpackaging of large, medium and small-sized pesticide factories. At present, photometers are often used for measuring the volume of liquid in high-precision liquid measurement. However, quantifying the volume of a liquid with a photometer has the following drawbacks.

(1) The requirement on the measured liquid is high, and if the measured liquid has color, the judgment of the sensor is influenced; (2) as the photometer is used, light is attenuated, and the photometer needs to be maintained regularly; (3) the transmittance of the quantitative container is high, and if the quantitative container is mostly made of glass, the quantitative container must have good light transmittance and needs to be washed regularly.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a liquid volume proportioning device adopts three-way valve and capacitive sensor to combine, and is not high to the material and the transparency requirement of pipeline, and is not high to liquid colour requirement, is applicable to the ration of most of liquid, and the ration is accurate, and is with low costs.

In order to achieve the above object, the utility model adopts the following technical scheme:

a liquid volume dosing device comprising: the pipeline and locate first power unit, first sensor, first three-way solenoid valve, second sensor and the reaction tank on the pipeline in proper order, first power unit is used for injecting liquid into the pipeline, the pipeline between first three-way solenoid valve and the second three-way solenoid valve is quantitative pipeline, first three-way solenoid valve external be used for to the gaseous second power unit of impressing in the quantitative pipeline.

Preferably, three paths of the first three-way electromagnetic valve are COM1, NC1 and NO1 respectively, three paths of the second three-way electromagnetic valve are COM2, NC2 and NO2 respectively, the NC1 path is communicated with the first power mechanism, the NO1 path is communicated with the second power mechanism, the COM1 path is communicated with the COM2 path, and the NC2 path is communicated with the reaction tank.

The optimization effect brought by the optimization scheme is that the electromagnetic three-way valve opens or closes a corresponding valve path according to an electric signal of the capacitance sensor, so that the liquid in the quantitative pipeline is pumped or discharged.

More preferably, the NO1 path, the NO2 path and the NC2 path are closed, when the NC1 path is opened, the first power mechanism draws liquid into the pipeline, and the first sensor and the second sensor are used for monitoring the liquid capacity in the quantitative pipeline in real time.

More preferably, when the first sensor and the second sensor detect that the pipeline is full of liquid, the NC1 path is closed, the NO1 path and the NC2 path are opened, and the second power mechanism operates to press gas into the quantitative pipeline so as to discharge the liquid in the quantitative pipeline to the reaction cell.

Preferably, the first sensor and the second sensor are both capacitive sensors.

The optimization effect brought by the optimization scheme is that the capacitance sensor can accurately judge the liquids with different colors and different components.

Compared with the prior art, the beneficial effects of the utility model are that:

1. a liquid volume proportioning device not high to the material and the transparency requirement of pipeline, can adopt plastics, materials such as metal, the cost is reduced easily promotes.

2. A liquid volume proportioning device response sensitive, measure accurately, can guarantee that the liquid volume is the volume of ration pipeline always, the length or the internal diameter of selecting the pipeline are different, the quantitative volume is different.

Drawings

Fig. 1 is a schematic structural view of a liquid volume quantifying device according to the present invention.

Wherein, 1, a pipeline, 11, a quantitative pipeline; 2. a first sensor; 3. a first three-way solenoid valve; 4. a second three-way solenoid valve; 5. a second sensor; 6. a first power mechanism; 7. a reaction tank; 8. and the second power mechanism.

Detailed Description

For a better understanding of the present invention, the contents of the present invention will be further clarified below with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.

Examples

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are all the directions or positional relationships shown on the drawings, and the objects are only for convenience of description of the present invention and simplification of description, and do not indicate or imply that the parts indicated must have a specific direction, be constructed and operated in a specific direction, and thus, are not to be construed as limiting the present invention.

A liquid volume dosing device comprising: pipeline 1 and locate first power unit 6, first sensor 2, first three way solenoid valve 3, second three way solenoid valve 4, second sensor 5 and reaction tank 7 on pipeline 1 in proper order, first power unit 6 is used for injecting liquid into in the pipeline 1, the pipeline between first three way solenoid valve 3 and the second three way solenoid valve 4 is quantitative pipeline 11, first three way solenoid valve 3 external be used for to the gaseous second power unit 8 of impressing in the quantitative pipeline 11.

The first power mechanism 6 can be a hydraulic pump or other power mechanisms capable of extracting liquid, and the second power mechanism 8 can be an air pump or other power mechanisms capable of pressing air. The first sensor 2 is electrically connected with the first three-way electromagnetic valve 3, the second sensor 5 is electrically connected with the second three-way electromagnetic valve 4, the first sensor 2 and the second sensor 5 can be capacitance sensors, and the capacitance sensors are various capacitors as sensing elements and are conversion devices for converting measured physical quantity or mechanical quantity into capacitance change, in fact, the capacitance sensors are capacitors with variable parameters. When the media are different, the capacitance changes. Therefore, the capacitance sensor can accurately judge the liquids with different colors and different components.

Three paths of the first three-way electromagnetic valve 3 are respectively COM1, NC1 and NO1, three paths of the second three-way electromagnetic valve 4 are respectively COM2, NC2 and NO2, an NC1 path is communicated with the first power mechanism 6, an NO1 path is communicated with the second power mechanism 8, a COM1 path is communicated with a COM2 path, and an NC2 path is communicated with the reaction tank 7.

When the NO1 path, the NO2 path, and the NC2 path are closed and the NC1 path is opened, the first power mechanism draws liquid into the quantitative tube 11, and the first sensor 2 and the second sensor 5 monitor the liquid volume in the quantitative tube 11 in real time. When the first sensor 2 and the second sensor 5 detect that the quantitative pipeline 11 is filled with liquid, the NC1 path is closed, the NO1 path and the NC2 path are opened, the second power mechanism 8 operates, gas is pressed into the quantitative pipeline 11, and the liquid in the quantitative pipeline 11 is discharged to the reaction tank 7.

A liquid volume proportioning device's principle as follows:

in the initial state, NO liquid exists in the pipeline 1, the NO1 path, the NO2 path and the NC2 path are closed, and the NC1 path is opened. The first power mechanism 6 operates to inject liquid into the pipeline 1, and the first sensor 2 and the second sensor 5 monitor the liquid volume in the measuring pipeline 11 in real time. When the first sensor 2 and the second sensor 5 detect that the quantitative pipeline 11 is filled with liquid, the NC1 path is closed, the NO1 path and the NC2 path are opened, the second power mechanism 8 operates to press gas into the quantitative pipeline 11, and the liquid in the quantitative pipeline 11 is discharged to the reaction tank 7. It is thus ensured that the volume of liquid entering the reaction cell 7 is always the volume of the dosing line 11. The length or inner diameter of the quantitative conduit 11 is different, and the quantitative volume is different. The steps are repeated to realize the quantitative and continuous liquid adding of the liquid.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A liquid volume dosing device, comprising: the pipeline and locate first power unit, first sensor, first three-way solenoid valve, second sensor and the reaction tank on the pipeline in proper order, first power unit is used for injecting liquid into the pipeline, the pipeline between first three-way solenoid valve and the second three-way solenoid valve is quantitative pipeline, first three-way solenoid valve external be used for to the gaseous second power unit of impressing in the quantitative pipeline.

2. The liquid volume quantifying device according to claim 1, wherein the three paths of the first three-way electromagnetic valve are COM1, NC1 and NO1, the three paths of the second three-way electromagnetic valve are COM2, NC2 and NO2, the NC1 path is communicated with the first power mechanism, the NO1 path is communicated with the second power mechanism, the COM1 path is communicated with the COM2 path, and the NC2 path is communicated with a reaction tank.

3. The device as claimed in claim 2, wherein the NO1 path, NO2 path and NC2 path are closed, the NC1 path is opened, the first power mechanism draws liquid into the conduit, and the first and second sensors are used to monitor the volume of liquid in the quantitative conduit in real time.

4. The apparatus as claimed in claim 3, wherein when the first and second sensors detect that the pipe is full of liquid, the NC1 path is closed, the NO1 path and the NC2 path are opened, and the second power mechanism is operated to press gas into the quantitative pipe to discharge the liquid in the quantitative pipe to the reaction tank.

5. The liquid volume dosing device of any one of claims 1 to 4, wherein the first sensor and the second sensor are both capacitive sensors.