Hard-light-interference-resisting liquid level detection device

Abstract

The invention discloses a hard-light-interference-resisting liquid level detection device which comprises a shell, a photoelectric liquid level sensor and a light transmitting window. The photoelectric liquid level sensor is arranged in the shell, the light transmitting window is arranged at the bottom of the shell so as to emit or receive light through the photoelectric liquid level sensor, an installing seat is further arranged at the bottom of the shell, a plurality of liquid passing grooves are formed in the edge of the installing seat, a detection cavity is formed in the middle of the installing seat, and the light transmitting window is located on the detection cavity. The hard-light-interference-resisting liquid level detection device is characterized that a plurality of light-interference-resisting blocking walls are arranged at the bottom of the shell and located on the detection cavity, the light-interference-resisting blocking walls are in corresponding fit with the liquid passing grooves in a one to one mode, a liquid inlet is formed between adjacent light-interference-resisting blocking walls, and the liquid passing grooves, the liquid inlets and the detection cavity are communicated. The hard-light-interference-resisting liquid level detection device can prevent hard light from influencing detection, and improve reliability of liquid level detection.

Description

technical field [0001] The invention relates to an anti-strong light interference liquid level detection device. Background technique [0002] At present, in the liquid level measurement of water, oil and corrosive liquids, as well as the detection of smoke concentration in gas, etc., the visual method is generally used. This method wastes manpower and is not very accurate. In some special occasions (such as the environment of toxic liquids and gases, the concentration of liquids and smoke in airtight non-transparent containers, etc.), it is inconvenient to use manual reading methods, and some measured liquids and gases are corrosive, flammable and explosive. The liquid level gauge is in contact with liquid and gas for a long time, and it will be corroded to cause measurement errors, which will greatly reduce its service life or even fail. Although some sensors have powerful functions, they are discouraged by complex structures and expensive prices. Now they are developed d...

AI Technical Summary

Problems solved by technology

[0002] At present, in the liquid level measurement of water, oil and corrosive liquids, and the detection of smoke concentration in gas, etc., the visual method is generally used. This method wastes manpower and is not very accurate. In some special occasions (such as the environment of toxic liquids and gases, the concentration of liquids and smoke in airtight non-transparent containers, etc.), it is inconvenient to use manual reading methods, and some measured liquids and gases are corrosive, flammable and explosive. The liquid level gauge is in contact with liquid and gas for a long time, and it will be corroded to cause measurement errors, which will greatly reduce its service life or even fail. Although some sensors are powerful, they are discouraged by complex structures and expensive prices. Now they are developed developed a liquid level detection device, which has a simple structure, but it was found during use that when there is strong light, the strong light will pass through the liquid-permeable tank and pass through the detection chamber, thereby affecting the measurement of the liquid level, making the liquid level measurement Unreliable

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