Improved measuring device for oxygen content in water

Abstract

The invention relates to an improved measuring device for oxygen content in water, which comprises a dissolved oxygen sensor and an ultrasonic transducer for cleaning the dissolved oxygen sensor, wherein the dissolved oxygen sensor and the ultrasonic transducer are arranged in a sealed shell at an interval; and the shell is provided with a water inlet and a water outlet on a peripheral wall of an area between opposite surfaces of the ultrasonic transducer and the dissolved oxygen sensor. The ultrasonic transducer and the dissolved oxygen sensor are arranged in the sealed shell at an interval, so that vibrational energy of ultrasonic waves can be fully utilized when the dissolved oxygen sensor is cleaned, and the cleaning effect is better; the vibrational energy of the ultrasonic waves can be fully utilized, so that only the ultrasonic transducer with lower power is needed, and the aim of energy conservation is achieved; and in addition, the ultrasonic transducer is arranged in the sealed shell, the influence of the ultrasonic waves on aquatic life is greatly reduced.

Description

technical field [0001] The present invention relates to an improved oxygen content measuring device. Background technique [0002] At present, the measuring device of oxygen content in water on the market is generally composed of a simple dissolved oxygen sensor. After a dissolved oxygen sensor works in water for a long time, a large amount of dirt will adhere to the oxygen-permeable membrane of the sensor. Clean it, otherwise it will cause inaccurate measurement. However, the existing measuring device for oxygen content in water does not have a special cleaning device, and it cannot be cleaned online. It can only be taken out of the water after a period of use and wiped with cotton cloth. This cleaning method takes a long time , its work efficiency is very low, and the cleaning is not thorough, and the wiping force is not well controlled, and it is easy to damage the oxygen permeable membrane. In order to achieve the purpose of convenient cleaning, the applicant of this p...

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Problems solved by technology

[0002] At present, the measuring device of oxygen content in water on the market is generally composed of a simple dissolved oxygen sensor. After a dissolved oxygen sensor works in water for a long time, a large amount of dirt will adhere to the oxygen-permeable membrane of the sensor. Cleaning, otherwise it will cause inaccurate measurement

However, the existing measuring device for oxygen content in water does not have a special cleaning device, and it cannot be cleaned online. It can only be taken out of the water after a period of use and wiped with cotton cloth. This cleaning method takes a long time , its work efficiency is very low, the cleaning is not thorough, and the wiping force is not well controlled, which is easy to cause damage to the oxygen permeable membrane

In order to achieve the purpose of convenient cleaning, the applicant of this patent applied for a utility model patent named a measuring device for oxygen content in water on March 20, 2009, and the patent number is CN200920052989.5. However, due to the use of an open bracket to connect the ultrasonic transducer and the dissolved oxygen sensor, the ultrasonic transducer is exposed to water, so there are two disadvantages: 1. The vibration energy of the ultrasonic wave cannot be fully utilized, and the cleaning effect is not good. Well, to ensure a good cleaning effect, the power of the ultrasonic wave must be increased; 2. The organisms in the water will be affected by the ultrasonic wave

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