A magnetically suspended piston pump, which comprises: an upper cylinder and a lower cylinder made of permanent magnet,Pneumatic and electric diaphragm pumps each having an inlet valve and an outlet valve; an upper piston and a lower piston made of permanent magnet and provided within the upper cylinder and the lower cylinder, respectively; and a driving mechanism connected to the upper piston and the lower piston, Magnetic pumpswherein an outer surface of the upper piston has an identical magnetic polarity with an inner surface of the upper cylinder and an outer surface of the lower piston has an identical magnetic polarity with an inner surface of the lower cylinder; an upper circular magnetic plate is provided at a bottom portion of the upper cylinder and a lower circular magnetic plate is provided at a top portion of the lower cylinder; and a surface of the upper circular magnetic plate facing to an inside portion of the upper cylinder has an identical magnetic polarity with a surface of the piston facing to the upper circular magnetic plate and a surface of the lower circular magnetic plate facing to an inside portion of the lower cylinder has an identical magnetic polarity with a surface of the piston facing to the lower circular magnetic plate. It is an object of the present invention to provide a magnetically suspended piston pump having a new configuration, in which a piston of a cylinder is able to work at a magnetically suspended situation without friction, thereby enhancing the power efficiency and the reliability of the pump. To accomplish the object of the present invention, a magnetically suspended piston pump is provided, comprising a cylinder, a piston, an inlet valve and an outlet valve located in the cylinder, and a driving mechanism connected to the piston, in which the cylinder is made of permanent magnet, and the piston embedded within the cylinder is also made of permanent magnet. In the invention, the magnetic polarity of an outer surface of the piston is the same as that of an inner surface of the cylinder, and a circular magnetic plate is provided at an end of the cylinder, in which a side surface of the circular magnetic plate towards an inside portion of the cylinder has the same magnetic polarity as a surface of the piston facing to the magnetic plate. According to an embodiment of the present invention, the circular magnetic plate disposed within the cylinder is made of permanent magnet or electromagnet. According to another embodiment of the present invention, the piston pump comprises a magnetic connecting rod driving device. The cylinder of this embodiment is configured in a double-cylinder structure, which comprises an upper cylinder and a lower cylinder. A magnetically suspended piston located in the upper cylinder is connected to another magnetically suspended piston located in the lower cylinder by a vertical connecting rod. Two circular permanent magnets are provided at the connecting rob, and a pair of electromagnets are provided at two sides of the circular permanent magnets. A group of coils is disposed in each of the electromagnets. The two groups of coils are connected with each other in series.

MORE NEWS

2012-01-11

Back