Dispensing – Automatic control – Motor control
Patent
1993-09-23
1995-05-16
Kashnikow, Andres
Dispensing
Automatic control
Motor control
222333, B67D 508
Patent
active
054153247
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a lubricant dispenser.
In particular the present invention is concerned with a single shot lubricant dispenser in which pre-determined quantities of high viscosity lubricant can be dispensed to the outer and, or inner diameters of tubing during a tube drawing process, and the outer diameter of a bar during a bar drawing process.
A known form of lubricant dispenser for this purpose comprises at least one pump and an internal level gauge, connected to a container of lubricant by means of flexible hoses and quick release connectors. The lubricant container usually comprises a standard 40 gallon barrel which has to be maneuvred so that it is supported in an inverted position on the lubricant dispenser. It is then necessary to connect the or each pump hose to the barrel. Also the lubricant dispenser always has an internal level gauge which also has to be connected to the lubricant barrel by means of a flexible hose and quick release connector.
It has been found in use that when the pump and sight level gauge hoses are connected to the lubricant barrel, personnel sometimes tip the barrel in order to gain access for making the necessary connections. This practice can result in serious injury to personnel should the barrel slip or fall.
Also as both of the hoses and in particular the pump hose are exposed to atmosphere it is possible that air will become trapped in the hoses when the hoses are connected to the lubricant barrel.
It is most important to exclude air from the pump since the presence of air in the pump can cause cavitation during operation and therefore serious damage to the pump components.
The present invention seeks to provide a lubricant dispenser in which the difficulties of connecting the lubricant barrel to the pump and the sight level gauge and also the risk of air entering the pump is minimised or avoided altogether.
Accordingly in one aspect, the present invention provides a lubricant dispenser comprising a reservoir arranged to receive a supply of lubricant, pumping means having an inlet permanently connected to the lubricant reservoir, and control means for the pumping means, the pumping means being arranged to deliver predetermined quantities of lubricant under the control of the control means; the reservoir being an integral reservoir which is permanently connected to the pumping means and which is connectable to a lubricant container by means of a flexible hose and a two-part connector, one part of which is attached to the lubricant container and extends through an opening in a support of the lubricant dispenser and the other part of which is attached to the hose which is greater in size than the opening in the plate on the dispenser.
The reservoir can be fed by gravity from a lubricant barrel which is supported in an inverted position on the lubricant dispenser.
The reservoir can be divided into at least two sub-compartments, each sub-compartment being permanently connected to a pump, and each pump can comprise an electrically driven gear pump.
The lubricant dispenser includes an internal level gauge which is permanently connected to the reservoir of the dispenser.
The lubricant dispenser can also include a pressure switch which is operated by pressure in a tube when the lubricant level reaches a low and/or empty level, the pressure switch operating indicator lights on a control panel.
In a further arrangement, the dispenser can include one or more pumps which are permanently immersed in the lubricant. Any number of such pumps can be provided, so far as space allows, and each pump can be controlled separately so as to supply lubricant to operations at spaced apart locations, simultaneously.
The pumps can be of the same size or can vary in size depending upon the needs of the operation requiring lubrication.
The present invention will be more particularly described with reference to the accompanying drawings in which;
FIG. 1 shows a diagrammatic lay out of a single shot lubrication system;
FIG. 2 shows a perspective view of one form of lubricant dispenser accord
REFERENCES:
patent: Re32593 (1988-02-01), Matsumoto
patent: 2203710 (1940-06-01), Young
patent: 2719654 (1955-10-01), Weatherbie
patent: 3280941 (1966-10-01), Fischer
patent: 4880144 (1989-11-01), Shea
patent: 4921126 (1990-05-01), Waltke et al.
patent: 5086950 (1992-02-01), Crossdale et al.
patent: 5116580 (1992-05-01), Wilson
patent: 5156308 (1992-10-01), Aoyama
patent: 5219040 (1993-06-01), Meuer et al.
patent: 5228594 (1993-07-01), Aslin
Derakshani Philippe
Kashnikow Andres
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