VB Series electric vibrators patent

Referring to the usual High Frequency VB Series electric vibrators pump, the usual VB Series-electric pump comprises a H&Z VB Series-electric vibrator 2 mounted in a casing 1 having a peripheral part secured to casing 1 within casing 1. The piezo-electric vibrator 2 is formed of two laminated piezo-electric layers 9,9 and electrode 3 inserted between the two piezo-electric layers 9,9, and electrodes 4,4 laminated on both sides of laminated two piezo-electric layers 9,9. Lead wires 11,12 are connected to the electrodes 3,4. The piezo-electric vibrator pump is provided with a suction non-return valve 5 (check valve)and a discharge non-return valve 6. An alternate current voltage e is applied between the electrodes 3,4 of said piezo-electric vibrator 2 through lead wires 11,12 which results in vibration of said piezo-electric vibrator causing fluid to be sucked through the suction non-return valve 5 and discharged through the discharge non-return valve 6 with the vibration of the piezo-electric vibrator.
However, because of direct attachment of the electric vibrators 2 to the casing, the usual pump has many disadvantages. The vibration of the piezo-electric vibrator  is restricted so that the amplitude of the piezo-electric viblator  becomes smaller, its performance is lower, its insulation characteristic is inferior, noise occurs due to the vibration of the piezo-electric vibrator, and in some cases stresses are imposed on the parts of the piezo-electric vibrator attached to the casing to such an extent that the vb series-electric vibrator may be broken.

VB series electric vibrator

electric vibrators