High-pressure high-flow 2D electro-hydraulic proportional pressure reducing valve

High-pressure high-flow 2D electro-hydraulic proportional pressure reducing valve

  • CN 105,508,337 A
  • Filed: 01/25/2016
  • Published: 04/20/2016
  • Est. Priority Date: 01/25/2016
  • Status: Active Grant
First Claim
Patent Images

1. a high-pressure high-flow type 2D electro-hydraulic proportional reducing valve, comprises reduction valve (1) and proportion electro-magnet (2);

  • Described reduction valve (1) comprises valve body (11), and is arranged on the spool (12) in described valve body (11);

    Described proportion electro-magnet (2) comprises housing (21), and is arranged on the armature (22) in described housing (21);

    It is characterized in that;

    have a vertical through hole (14) in the middle of the middle part shoulder of described spool (12), described vertical through hole (14) communicates with the external part (13) of the pressure hole (15) of described spool (12) left end, described spool (12) right-hand member respectively;

    The external diameter of the external part (13) of described spool (12) right-hand member and the ratio of described spool (12) left end shoulder radius are 0.707;

    Described vertical through hole (14) is circular damper apertures;

    Described 2D electro-hydraulic proportional reducing valve also comprises turns round coupling (3) for connecting described reduction valve (1) with the pressure of described proportion electro-magnet (2), described pressure is turned round coupling (3) and is comprised the first joint (31) be fixedly connected with described spool (12), the second joint (32) be fixedly connected with described armature (22), be connected to the first elastic helix part (33) between described first joint (31) and described second joint (32) and the second elastic helix part (34), telescopic bellows (35), the joint (36) of projection on the outer wall of described second joint (32) away from one end of described first joint (31), and the mounting plate (37) be fixedly mounted on described valve body (11),Described first joint (31) and described second joint (32) are the identical cylindrical body of external diameter;

    Described first elastic helix part (33) is identical with the rotation direction of described second elastic helix part (34), and described first elastic helix part (33) and the projection of described second elastic helix part (34) respectively on the same end face of described first joint (31) are separated from each other;

    Described bellows (35) is sleeved on the outside of described first joint (31) and described second joint (32), one end of described bellows (35) is connected with described mounting plate (37), the other end of described bellows (35) is connected with described joint (36), and described bellows (35) and described spool (12), described first joint (31), described second joint (32), and described armature (22) is all coaxially arranged;

    Described first joint (31), described second joint (32), described first elastic helix part (33), described second elastic helix part (34), described bellows (35), described joint (36), and described mounting plate (37) is integrated;

    When described armature (22) promote described second joint (32) move towards described spool (12) time, described joint (36) compresses described bellows (35), and described first elastic helix part (33) and described second elastic helix part (34) produce relative torsion to drive the rotary motion of described first joint (31).

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