Title:
連続的な正変位を計測する弁
Document Type and Number:
Japanese Patent JP2005508011
Kind Code:
A
Abstract:
A continuous operation metering valve, based on true volumetric positive displacement technology, uses an innovative dual rack and drive pinion design that enables the valve (34) to dispense from one meter chamber (32) while the other meter chamber (32) is filling. This provides greater dispense cycle rates because it does not require a fill or reload period. With an optional encoder-controlled motor (42), the inventive metering valve is capable of almost unlimited precision dispensing with "on-the-fly" adjustment capability. The metering valve is easily disassembled and cleaned, using stainless steel wetted path components and Teflon seals for the widest range of chemical compatibility. An integral electronic board, mounted to the side of the valve, may be utilized to control the 4-way directional valve and motor direction (when not using a rotary encoder control).
Inventors:
Jefferson, Richard
Application Number:
JP2003542057A
Publication Date:
March 24, 2005
Filing Date:
October 15, 2001
Export Citation:
Assignee:
Delaware Capital Formation Incorporated
International Classes:
G01F13/00; B65D88/54; B67D7/18; B67D7/30; B67D7/64; F04B7/00; F04B13/00; F16K5/02; (IPC1-7): G01F13/00; F16K5/02
Attorney, Agent or Firm:
Takahisa Sato