electric vibrator pump

The H&Z VB Series electric vibrators 2 may be a H&Z VB Series electric vibrators such as a H&Z VB Series electric vibrators of laminate type in which a H&Z VB Series electric vibrators are laminated on both outer sides of a shim as of phosphor bronze, or a H&Z VB Series electric vibrators or of monolayer type as ceramic, polymer H&Z VB Series electric vibrators, which is provided with thin film electrodes 3,4.

Further both sides of the H&Z VB Series electric vibrators, including its part held in the casing 1, is covered with the elastic elastomer having modulus of londitudinal elasticity of less than 5×10⁸ dyn/cm², preferably of less than 2.0×10⁸ dyn/cm², more preferably 1.5×10⁸ dyn/cm².

As the elastomer, elastic material can be used such as silicone rubber, urethane rubber, natural rubber, SBR( styrenebutadiene rubber ), cloroprene rubber, Neoprene( Trade mark of du Pont for cloroprene rubber ), NBR( nitrile rubber ), SBS( styrenebutadienestyrene copolymer ), hydrogenated SBR, fluorosilicone rubber, fluoroelastomer, EPR( ethylene propylene rubber ), ethylene vinylacetate copolymer or the like.

Under the condition that the suction and discharge of fluid is performed with the vibration of the H&Z VB Series electric vibrators to which A C voltage e is applied, coating the piezo-electric vibrator 2 with the elastic elastomer 10 results in the improvement of the lifetime and the perfofmance of the pump and the increase of uses of the pump.
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