Push-Pull elements

Patented by Martin Walter in 1989, the push-pull resonator represents a new method of introducing ultrasonic energy into liquid media. A resonating system consisting of a solid titanium alloy rod opens up new opportunities for ultrasound cleaning in a number of areas in which ultrasound could previously only be used with difficulty or not at all.

Techical

The ultrasound converters mounted at each end of the resonator rod induce longitudinal pulses in the resonator at the points of attachment. Due to the resonations over the entire length of the resonator,  transverse vibrations are induced, leading to radial emissions of ultrasonic energy about the resonator.

Advantages

• Exceptionally long service life assured by solid resonator
• Use of special titanium ensures high degree of efficiency (>95%).
• This permits cost savings through the reduction in energy consumption.
• Emissions of ultrasonic energy from the resonator itself ensures a homogeneous sonic field.
• Minimal space requirement permits simple retrofitting, even to existing systems.
• By contrast with conventional immersion resonators, modular construction permits easy repairs. Simple, rapide installation.
• Automatic internal identification of dry-running condition in the absence of cleaning liquid. No additional wiring required.

Applications

• Ultrasound cleaning
• Environmental applications (e.g. sewage sludge treatment
• Emulsifying and dispersing
• Use under partial vacuum or under pressure

Easy Installation

• The push-pull resonator can be connected by means of a corrosion resistant stainless steel tube, supplied as standard, which is available in a variety of lengths.
• The resonator can be connected to an ultrasound generator by means of a terminal box (supplied) and special high frequency cable.
• Direct installation through the tank wall. In this case, the usual connecting tube is dispensed with.
• The converter, to which the power supply is connected, is led directly through the tank wall by way of a threaded socket and seal

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