Electronic lube gun with low battery protection

Details Electronic lube gun with low battery protection Electronic lube gun with low battery protection

B - Operations, Transporting

67

D

B67D 7/30 (2010.01) B67D 7/04 (2010.01) F16N 5/00 (2006.01) G01F 13/00 (2006.01) G01F 15/00 (2006.01)

Patent

CA 2406617

A device for delivering a preset volume of fluid, such as oil, includes a casing (10) with an inlet port (16), an outlet port (17) and supply passages (22, 24) for flow of fluid from the inlet port (16) to the outlet port (17). A valve including a valve member (24) is situated to control the flow of the fluid through a valve chamber (23). The valve is manually actuated to an open position and held by momentary energization of a latching solenoid (36). When the fluid volume reaches a preset volume, the latching solenoid (36) is energized again to allow the release the valve member (24) to return to a closed position. In the event of a battery low condition, the latching solenoid (36) can be disabled, so that the valve can only be held open manually, thereby preventing an electrical failure with the valve open. A manual push botton (21) is directly connected to the valve member (24) for closing the valve manually. A method for controlling the dispensing of a fluid is also disclosed.

Un dispositif de distribution d'un volume pré-établi de fluide, tel que de l'huile, comprend un boîtier (10) pourvu d'un orifice d'entrée (16), d'un orifice de sortie (17) et de passages d'alimentation (22, 24) permettant l'écoulement du fluide dudit orifice d'entrée (16) vers ledit orifice de sortie (17). Une soupape comportant un élément (24) est placée de manière à réguler le flux du fluide s'écoulant à travers une chambre de soupape (23). Cette soupape est actionnée manuellement à une position ouverte et est ainsi maintenue par excitation momentanée d'un solénoïde de verrouillage (36). Lorsque le volume du fluide atteint un volume pré-établi, le solénoïde de verrouillage (36) est à nouveau excité pour permettre la libération de l'élément de soupape (24) qui retourne à une position fermée. En cas de pile faible, on peut désactiver le solénoïde de verrouillage (36), de telle manière que la soupape ne peut être maintenue ouverte que manuellement, ce qui empêche donc une défaillance électrique avec la soupape ouverte. On peut relier directement un bouton poussoir manuel (21) à l'élément de soupape (24) en vue de fermer la soupape manuellement. Cette invention concerne aussi un procédé de distribution d'un fluide.

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