General

DBY series of electric diaphragm pumps， using swing needle wheel gearbox transmission，through the crankshaft sliding mechanism to drive the double diaphragm for remov-ement，so that the working cavity volume changes alternately so as to achieve the continuous inhalation and discharge of liquid. At the same time， in recent years， due to the break-through progress of diaphragm material， greatly extending the service life of diaphragm， so it is more and more widely replaced part of centrifugal pumps， screw pumps for petroc-hemical， ceramic， metallurgy and other industries.

QBK pneumatic diaphragm pump，with a long service life，will not stop and other advantages，it can not only pump flow-ing liquid， but also can convey some difficult to flow media，with self-suction pump， submersible pump， shielding pump，mud pump and impurity pump and other transport machinery many advantages.

1.It's unnecessary to pour the drawing water，the suction lift reaches 6m height， the delivery lift reaches 70m length.

2.Wide flow and good performance. The diameter allowed to pass the max grain reaches 10mm.The damage is very less to the pump while exhausting the slurry and impurity.

3.The delivery lift and flow can pass the pneumatic valve open to realize the step less adjustment ((the pneu-matic pressure adjust ment is between l-8bar).

4.The diaphragm separates the working medium from the pump's moving parts completely， so the medium will not leak outside.It will not result in environmental pollution or endanger personal safety when transporting toxic，volatile or corrosive media.

5.No electricity. It's safe and reliable while using in the flammable and explore places.

6.It can be soaked in medium.

7.It's convenient to use and reliable to work. Only open or close the gas valve body while starting or stopping.Even if no medium operation or pausing suddenly for long time because of accident matters， the pump will not tbe damaged caused by this. Once over loading，the pump will automatic-ally stop andp possesses the self protection function.When the load recovers normally， it also can start automatically.

8.Simple structure and less wearing parts. This pump is simple in structure，installation and maintenance.The medium conveyed by the pump will not touch the matched pneumatic valve and coupling lever etc. Not like other kinds pumps，the performance will drop down gradually because of the dama-ges of rotor， gear and vane etc.

9.It can transmit the adhesive liquid(the viscosity is below 10000 centipoises).

10.This pump needn't the oil lubricant. Even if idling， it has any influence to the pump. This is a characteristic of this pump.

Table of property parameters