Metering device for mechanical light sensation combined redundant water quality monitor

Abstract

The invention discloses a metering device for a mechanical light sensation combined redundant water quality monitor. The metering device comprises a motor, a lead screw, a piston rod, a piston cavity,an infrared range sensor, a photoelectric range sensor and a controller. The motor is connected with the lead screw through a coupler. The lead screw is connected with the piston rod through a lead screw pair. The piston rod moves leftwards and rightwards in a piston cavity. A water inlet pipe and a water outlet pipe are connected with the piston cavity. Two ends of the infrared range detector are mounted on opposite sides of the motor and the piston rod. The photoelectric range sensor is mounted above a water storage device and faces the interior of the water storage device. The controller is connected with the infrared range detector and the photoelectric range sensor electrically. The metering device has the advantages that the volume of sample water of water quality sampling can be controlled accurately, accuracy and automation in water quality sampling can be realized, and accordingly, accuracy of water quality detection results is improved.

Description

technical field [0001] The invention relates to a liquid metering device, in particular to a metering device for a mechanical light-sensing combined redundant water quality monitor. Background technique [0002] In order to protect the water environment, the monitoring of sewage discharge must be strengthened; the quality of drinking water has declined, which is extremely harmful to human health. Water quality detectors have played an important role in environmental protection, water quality detection and water resource protection. However, in the traditional mode, the collection of water samples is carried out manually, and people use instruments such as measuring cylinders to ensure the detection of the volume of water samples by means of human eyes. This method has large errors and low precision, and cannot guarantee the accuracy of the collected water sample volume, which will directly affect the detection results of the water quality monitor for the target water sample....

AI Technical Summary

Problems solved by technology

However, the piston of this device only goes back and forth once to achieve a single measurement, which has the disadvantages of small measurement range and low precision.

In addition, although the existing device capable of realizing secondary measurement (CN 201611233219.1) has achieved the requirements of wide measurement range and secondary measurement, its flowmeter measurement is affected by liquid temperature, flow velocity, electromagnetic interference and internal precipitation of the measurement device. Influence, there are large fluctuations in measurement accuracy, the scale measurement method is difficult to achieve automatic measurement, at the same time, the requirements for the measurer are high, the measurement results are greatly affected by human subjectivity, and there is also the problem of low measurement accuracy

Images