Sample solution fixed-value sampling apparatus and method
A sampling device and sample liquid technology, which is applied to the sampling device and other directions, can solve the problems of inaccurate fixed value sampling, and achieve the effect of avoiding false alarms by sensors and high accuracy of sampling.
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Embodiment 1
[0032] figure 1 Schematically provides the structural diagram of the fixed value sampling device for sample liquid in this embodiment, as figure 1 As shown, the fixed-value sampling device for sample liquid in this embodiment includes a sample liquid, a container, a sampling pipeline connecting the sample liquid and the container, and a delivery unit arranged on the sampling pipeline for providing power. The device further includes:
[0033] At least one sensor, the sensor is provided with a plurality of photocouplers along the direction of the sampling pipeline, and when there are multiple sensors, the sensors are connected in series on the sampling pipeline at intervals;
[0034] A sampling valve, the sampling valve is located between the sample liquid and the sensor;
[0035] A control unit, the control unit selectively adopts a signal of a photoelectric coupler in one of the sensors to control the closing of the sampling valve, and obtains a fixed-value sample liquid bet...
Embodiment 2
[0054] An application example of obtaining 10 ml of a single sample liquid at a fixed value in water quality analysis and sampling according to the fixed value sampling device for sample liquid according to Embodiment 1 of the present invention.
[0055] Such as figure 2 As shown, in this embodiment, the sample liquid is connected to the sampling pipeline through a three-way solenoid valve, the other interface of the three-way solenoid valve is connected to the distilled water test bottle, and the sampling pipeline is sequentially provided with a sampling valve, sensor A and sensor B, where the capacity of the sampling pipeline between the sampling valve and sensor A is 10ml, the capacity of the sampling pipeline between sensor A and sensor B is 5ml, and the delivery unit is a peristaltic pump. The control unit controls the three-way solenoid valve, the sampling valve, the sensor A, the sensor B and the peristaltic pump, wherein the sensor A and the sensor B are both provided...
Embodiment 3
[0062] This embodiment is an application example in which the sample liquid fixed-value sampling device in embodiment 1 collects multiple sample liquids at a fixed value and mixes them when mixing the sample liquids.
[0063] Such as image 3 As shown, in this embodiment, the various sample liquid components of the proportioned mixed sample liquid are connected to the sampling pipeline through the multi-way valve, wherein one channel of the multi-way valve is connected to the distilled water test bottle. The sampling pipeline is provided with sampling valves and multiple sensors arranged at intervals in sequence. The container is a mixing container, and the mixing container is set between the sampling valve and the first sensor through a three-way valve, and between the mixing container and the sampling pipeline. A solenoid valve is arranged on the connecting pipeline. The delivery unit is a peristaltic pump, and the peristaltic pump is arranged behind the sensor.
[0064] T...
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