公开(公告)号：WO2017127427A1

公开(公告)日：2017-07-27

申请号：PCT/US2017/013943

申请日：2017-01-18

Applicant: GRACO MINNESOTA INC.

Inventor： GUSTAFSON, Brandon T. ,  NIJAGUNA, Suresha Saragur ,  IGO, Chad G.

IPC: G01F23/00

CPC classification number: F16N29/00 ,  F01M11/12 ,  F04B39/00 ,  F04B49/02 ,  F04B49/06 ,  F04B53/18 ,  F04B2201/0201 ,  F04B2201/0209 ,  F16N7/385 ,  F16N2250/18 ,  G01F23/0061

Abstract: The lubricant level within a reservoir is difficult to monitor, leading to the reservoir being refilled more often than necessary to ensure that the reservoir always contains lubricant. A lubricant level sensing system is connected to and monitors various aspects of the pump assembly that draws lubricant from the reservoir. The pump assembly displaces a known volume of lubricant with each pump stroke. A lubricant-level estimator calculates an estimated lubricant level remaining in the reservoir based on a stroke-count value as sensed from the pump assembly and on a reference value stored in a memory. The estimated lubricant level provides the lubricant remaining and the rate of usage such that maintenance can be scheduled ahead of time to prevent the reservoir running dry.

Abstract translation:

储油罐内的润滑油液位难以监测，导致储油罐重新充满的次数超过必要量，以确保储油罐始终含有润滑油。 润滑剂液位传感系统连接到并监测泵组件的各个方面，其从储液器吸取润滑剂。 泵组件在每次泵冲程时都会排出已知体积的润滑油。 润滑剂水平估计器基于从泵组件感测到的冲程计数值和存储在存储器中的参考值计算存储器中剩余的估计润滑剂水平。 估计的润滑剂水平提供剩余的润滑剂和使用率，从而可以提前安排维护，以防止油藏干涸。

公开(公告)号：EP3739255A1

公开(公告)日：2020-11-18

申请号：EP20173825.9

申请日：2016-04-22

Applicant: Graco Minnesota Inc.

Inventor： HOLMAN, John C. ,  ATKINSON, Mike V. ,  GUSTAFSON, Brandon T. ,  PAAR, Benjamin J.

IPC: F16N11/08 ,  F16N29/00 ,  F04B53/12 ,  F04B23/02 ,  F04B49/04 ,  F04B53/06 ,  F04B53/16 ,  F16K31/18 ,  F16N7/38 ,  F16N13/22 ,  F16N11/00

Abstract: An autofill shutoff valve includes a valve body mounted to a lubricant reservoir and secured to a fill tube extending into the reservoir. The autofill shutoff valve has a valve stem extending through the valve body and into the lubricant reservoir. The valve stem is actuated by a plate disposed within the reservoir from a first position, wherein lubricant flows from a lubricant inlet to a lubricant outlet through the valve body, to a second position, wherein the valve stem blocks the flow of lubricant through the valve body. The autofill shutoff valve provides lubricant directly to the reservoir, thereby eliminating external plumbing and the autofill shutoff valve also prevents overfill of the reservoir by cutting off the flow when the reservoir is full.