Ultrasonic vibrating screen

Ultrasonic generator is a device that converts commercial power into corresponding high-frequency alternating current of the transducer to drive the transducer to work. It is an important part of the high-power ultrasonic system. It can also be called electronic box, Ultrasonic drive power supply, ultrasonic controller. Although the ultrasonic generator can also be called the ultrasonic driving power supply, in fact, the ultrasonic generator is only a part of the ultrasonic driving power supply. Ultrasonic power supply can be divided into self-excited type and other excitation type according to different excitation methods, and ultrasonic generator refers to its excitation type ultrasonic power supply, because its excitation type oscillation circuit is more than 10% higher in output power than self-excited type. , so most of the ultrasonic generators are currently used as the driving power.

Ultrasonic ultrasonic transducers are actually piezoelectric ceramics with the same frequency as their resonant frequency. They use the piezoelectric effect of materials to convert electrical energy into mechanical vibrations. In general, ultrasonic waves are first generated by ultrasonic generators, converted into mechanical vibrations by ultrasonic transducers, and then ultrasonic waves can be generated by ultrasonic wave derivation devices and ultrasonic receiving devices.

working principle

Ningbo Luoshang ultrasonic equipment consists of generators and transducers. The generator is also called ultrasonic power supply, which provides stable and intelligent high-frequency and high-voltage electrical energy to the ultrasonic transducer, and then drives the transducer into high-frequency mechanical energy through the high-frequency and high-voltage electrical energy and conducts it to the test sieving apparatus. . And the mode of energy output can be controlled through the operation panel to achieve different ultrasonic energy output requirements. There are three working modes of Jingxin ultrasonic generator: continuous, pulse and gap. Power output intensity is divided into five types: 60%, 70%, 80%, 90%, 100%. There are 15 working modes of Shanghai Jingxin Ultrasonic. According to the characteristics of different materials, the corresponding working mode is appropriately selected to achieve the best screening efficiency.

Ultrasonic generator and transducer features

In addition to adjusting the output power to make it stable, and adjusting the frequency to make the transducer work in the best state, the ultrasonic generator can also monitor the power and operating frequency of the high-power ultrasonic system. The control amplitude is stable even when the load changes, and an alarm can be issued to protect the system equipment when the situation is bad.

There are two main types of transducer materials for superfrequency ultrasonic transducers: magnetostrictive transducer materials and piezoelectric transducer materials. The sheet-like ferromagnetic material is stacked into a rod or tube shape, and placed in a field whose direction is along the axis of the holding rod. When the incoming field changes, the length of the rod also changes. This physical phenomenon is called magnetostriction. effect, ferromagnetic or alloy materials with magnetostrictive effect are called magnetostrictive transducer materials

 Automatic frequency tracking: automatically track the resonant frequency of the transducer;

 The mode is adjustable: for different materials, select the corresponding vibration mode;

             Continuous: suitable for low mesh, high density powder.

             Pulse: suitable for high mesh, small density powder.        

             Gap: suitable for high-mesh, easy-to-aggregate materials.

  Amplitude adjustable: five amplitudes are adjustable. According to the specific gravity, particle size and structural characteristics of the material, the corresponding amplitude can be selected to obtain high screening efficiency.

  Overload protection: In case of abnormal conditions, the system will automatically power off to protect important components from damage.

  Heat dissipation system: The device adds an air cooling system design to ensure the stability of work in an overheated environment.

  Sealing design: The system pays attention to the sealing design to ensure that dust does not enter the interior in harsh environments and prevent the occurrence of flammable and explosive situations.

Transducer technical parameters（Transducer product details clickhere）

model	Frequency (KHZ)	Resonance impedance (Ω)	Capacitance (PF)	Output power (W)
DHSF-E2（high frequency）	35.5	≤ 10 Ω	2000 ± 10%	40-120
DHSF-E1（low frequency）	28	≤ 15Ω	4000 ± 10%	30-60

Apply Range

l Agriculture, Soil, Coal, Synthetic, Chemical, Geology, Metallurgy, Building materials, environment, resources, glass, ceramics, biology, etc.

l Laboratories in pharmaceutical, metallurgy, chemical, mineral processing, food and other industries

Notes

Ultrasonic generator is a device that converts commercial power into corresponding high-frequency alternating current of the transducer to drive the transducer to work. It is an important part of the high-power ultrasonic system. It can also be called electronic box, Ultrasonic drive power supply, ultrasonic controller. Although the ultrasonic generator can also be called the ultrasonic driving power supply, in fact, the ultrasonic generator is only a part of the ultrasonic driving power supply. Ultrasonic power supply can be divided into self-excited type and other excitation type according to different excitation methods, and ultrasonic generator refers to its excitation type ultrasonic power supply, because its excitation type oscillation circuit is more than 10% higher in output power than self-excited type. , so most of the ultrasonic generators are currently used as the driving power.