01-05-2018 дата публикации
Номер: CN0207297517U
Paper machine boots roller power protection devices is including paper machine, former hydraulic system control circuit, newly -increased valve unit spare and accumulator, newly -increased valve unitspare include first hydraulically controlled check valve (RSE1), second hydraulically controlled check valve (RSE2), pressure difference switch (PDSI), pressure switch (PT1), two -position four -way solenoid valve (EY1), relief pressure valve (PR1) and pressure measuring connector. The utility model discloses suddenly, outage causes former hydraulic system to lose electric stop work to high -speedpaper machine shoe press, lead to boots roller separation stall, and bottom roll inertia fortune rotary grinder decreases a power -off protection system of shoe sheath design. Parallelly connected accumulator and control valve member in former hydraulic control system when the papermaking system loses power supply, provide the hydraulic oil output who lasts through the accumulator to maintains aperiod ...
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