Internal pressure balance flow regulating valve

Internal pressure balance flow regulating valve

  • CN 2,434,648 Y
  • Filed: 07/31/2000
  • Issued: 06/13/2001
  • Est. Priority Date: 07/31/2000
  • Status: Active Grant
First Claim
Patent Images

1. an internal pressure balanced type flow control valve comprises valve body and spool, it is characterized in that:

  • Valve body (1) has the inner chamber (101) that is taper type, and import (102) is arranged at top, and outlet (103) is arranged at the bottom;

    One gland (3) is connected in the top of valve body (1) with flange (301), and the oriented open circles cover (302) that stretches into valve body (1) inner chamber of this gland (3) forms chamber (5);

    Spool is one the hollow sleeve of inner chamber (6) to be arranged, and is contained in the inner chamber of valve body (1), and its top cylindrical (201) is in the cylindric open circles cover (302) that stretches into gland (3), and this cylindrical (201) has annular groove built-in ring (10);

    It is corresponding that its underpart cylindrical (302) is the taper type inner chamber (101) of truncated cone shape and valve body (1), and in the endoporus of the cylindrical of spool (2) and valve body (1), form ring tapered channel (7), (8), (9) of three circulation area continuous gradations, the end face of the chamber (6) of this spool (3) has aperture (203) to be communicated with chamber (5), and its lower end has through hole (204) that the inner chamber of chamber (6) with valve body (1) is communicated with;

    The top of described spool (2) is connected with coupling shaft (4), and the upper end that this coupling shaft (4) stretches out gland (3) connects driving mechanism.

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