Piston valve for diaphragm pump

Piston valve for diaphragm pump

  • CN 101,644,254 B
  • Filed: 09/19/2008
  • Issued: 06/06/2012
  • Est. Priority Date: 08/04/2008
  • Status: Active Grant
First Claim
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1. the piston valve body device of a diaphragm type booster pump;

  • It is characterized in that;

    the central drainage seat end face of this piston valve body device;

    Center with its first positioning hole is a minimum point;

    Be arranged to an inside concave arc surface, and will be positioned at central drainage seat and place each entry seat outward, with its separately the surface contact of corresponding applying piston sheet;

    Center with second positioning hole of entry seat is that minimum point is set as inside concave arc surface;

    To place non-return rubber cushion and first locating column, two members in the piston valve body central authorities drainage seat in addition, and adopt and process single component with a kind of soft elastic material with one-body molded mode, the bottom surface with non-return rubber cushion and each piston sheet all is set as plane or inside concave arc surface again;

    After the first locating column build-in of non-return rubber cushion is in first positioning hole of drainage seat;

    The concave arc surface of the bottom surface of this non-return rubber cushion and drainage seat end face can be formed with a space between the two;

    And with second locating column of this each piston sheet respectively build-in in second positioning hole of each entry seat after, the concave arc surface of the bottom surface of this piston sheet and entry seat also can be formed with a space between the two.

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