Strainer

A strainer comprising:

• a. a filter net,
• b. a semi-cylindrical male shell having a pair of end supporters and a center supporter, top and bottom male frames of semi-circular shape connected with each other by said supporters and top and bottom boards of circular shape connected to said top and bottom frames and each presenting a substantially semi-circular lateral extension,
• the top board having a through hole adapted to complimentarily accept a suction pipe therethrough,
• c. a semi-cylindrical female shell having a pair of end supporters and a center supporter, and top and bottom female frames of semi-circular shape connected with each other by said supporters and groove means on the inside surface of each female frame,
• the top and the bottom female frame grooves being adapted to cooperatively accept said lateral extensions of said top and said bottom boards therein respectively, said top and bottom boards closing the top and bottom frames of said male and female shells respectively, said male and female shells being movably connected with each other adjacent respective end supporters by suitable hinge means, said net being integrally attached to the peripheries of said male and female shells, said connected male and female shells adapted to be made to come closely into contact with each other by rotation about said hinge means and means for connecting the other said end supporters positioned remote from said hinge means.