Watertight packaging type ultrasonic cleaning transducer

Abstract

The invention relates to a watertight packaging type ultrasonic cleaning transducer which solves the problems of proneness to damage, difficulty in maintenance, low cleaning efficiency and the like of existing cleaning transducers. The transducer comprises a front cover plate, a rear cover plate, a positive electrode plate, a negative electrode plate, a first annular piezoelectric ceramic piece and a second annular piezoelectric ceramic piece, wherein the positive electrode plate, the negative electrode plate, the first annular piezoelectric ceramic piece and the second annular piezoelectric ceramic piece are locked between the front cover plate and the rear cover plate through a prestressing screw rod. The positive and negative electrode plates are connected with wires which are serially connected with a matching inductor. A sealing layer composed of poly propylene glycol ether polyurethane rubber is poured outside the integral structure, and the thickness h of the sealing layer packaged on the front end face of the front cover plate is one quarter of wavelength of sound waves given out by the transducer. The watertight packaging type ultrasonic cleaning transducer is reasonable in material selection, simple in sealing process, low in cost, high in reliability, easy to maintain and convenient for arraying, and further, the matching inductor is added, so that energy sources are saved, and cleaning efficiency is improved.

Description

technical field [0001] The invention relates to ultrasonic cleaning equipment, in particular to a water-sealed ultrasonic cleaning transducer. Background technique [0002] The ultrasonic cleaning transducers in the ultrasonic cleaning machines currently on the market are all unpackaged, that is, glue is applied to the front cover of the ultrasonic cleaning transducer, and a single transducer is fixed on the aluminum plate by a single bolt. In this way, these several transducers are formed into an array. Finally, the aluminum plate is covered with a cuboid box, which sinks into the bottom of the cleaning tank, and is watertight through the aluminum box. This just causes three problems: 1, through the vibrating work of transducer for a long time, glue is easy to crack, and bolt is easy to loosen. 2. With the passage of working time, there will be a strike from one to some transducers in the transducer array, or because of cracks in the front cover, or because of broken bolt...

AI Technical Summary

Problems solved by technology

This leads to three problems: 1. After long-term vibrating work of the transducer, the glue is easy to crack and the bolts are easy to loosen

2. With the passage of working time, there will be a strike from one to some transducers in the transducer array, or because of cracks in the front cover, or because of broken bolts, or because of cracks in the piezoelectric ceramic sheet, etc.

And because the aluminum box is a sealed black box, the cleaners have no way of knowing it, and can only judge by the continuous decrease in cleaning efficiency until the entire transducer array and aluminum box are replaced, and a certain transducer that is on strike cannot be replaced in real time. devices, resulting in greatly reduced maintainability and reliability, and replacing them all is a waste of resources

3. The vibration energy is transmitted from the front cover plate to the aluminum plate through the bolts, and then to the water. The energy loss is huge, resulting in low cleaning efficiency, time-consuming and power-consuming

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