Title:
FLOW CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JPS6026801
Kind Code:
A
Abstract:
PURPOSE:To keep a constant difference in pressure between flows before and behind a flow adjusting variable throttle by incorporating a constant flow control valve, a sequence valve and a fixed orifice in the pilot system of a specific- pressure reducing valve which is connected to the inflow side of the variable throttle. CONSTITUTION:A flow adjusting variable throttle 1 is disposed on the way of a main oil passage 11 which connects a liquid pressure source to a load, such as a cylinder or the like and a specific pressure reducing valve 2 is also arranged in series at the inflow side of the variable throttle 1. A pressure P1 at the entrance of the variable throttle 1 is sent via an oil passage 12 into the primary pilot compartment of said valve 2 and a differential pressure setting spring 10 is provided for the secondary pilot compartment. A constant flow control valve 14 serving for supplying a trifle pilot flow of a constant rate is disposed on the way of an oil passage 13 which connects the inflow side of the specific pressure reducing valve 2 to the secondary pilot compartment. A sequence valve 18 and a fixed throttle 22 making up a parallel circuit are connected to an oil passage 17 which connects the secondary pilot compartment to the outflow side of the variable throttle 1.
Inventors:
AKITA YOSHISUKE
TENMIYOU ICHIROU
HAYASHI KIYOSHI
KIHARA KAZUYUKI
TENMIYOU ICHIROU
HAYASHI KIYOSHI
KIHARA KAZUYUKI
Application Number:
JP13417883A
Publication Date:
February 09, 1985
Filing Date:
July 22, 1983
Export Citation:
Assignee:
TOKYO KEIKI KK
International Classes:
F15B11/05; F16K17/30; (IPC1-7): F15B11/05
Attorney, Agent or Firm:
Takeuchi Susumu