Mitsui Co., Ltd.

Jun Taga

The present invention provides a pump which is capable of supplying a liquid free from worn materials and other impurities resulting from pump operation. In one embodiment, the pump includes a diverting passageway for diverting flow liquid from the main discharge opening to a gap between a cylinder and a shaft, between an impeller and a bearing and also includes a passageway for discharging the diverted flow liquid containing the worn materials from the gap during operation of the pump in which the main flow liquid is suctioned into the cavity of the pump and discharged through a main discharge opening.

Pump

Plunger pump

A cartridge filter comprises a pleat-type porous membrane having a longer length than an effective filtering surface thereof; upper and lower end plates; a plurality of segmented cylindrical core members disposed between the upper and lower end plates; and protective caps for fastening and sealing an upper and lower reminder of the pleat-type porous membrane other than the effective filtering surface thereof. Each of said end plates is provided with a plurality of fins, each of which is covered by the pleat-type porous membrane. The pleat-type porous membrane is folded at each corner of respective end plates and fastened firmly between the end plate and the protective cap by melting means, adhesion or sealing means.

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Kawasaki, Japan

Jun Taga