Fluent material handling – with receiver or receiver coacting mea – Combined
Patent
1983-03-14
1985-04-23
Bell, Jr., Houston S.
Fluent material handling, with receiver or receiver coacting mea
Combined
137429, 74110, B65B 304
Patent
active
045123780
DESCRIPTION:
BRIEF SUMMARY
The object of the invention is a device for the automatic filling of battery cells with water comprising a filling cup to be inserted into the cell and provided with a connection hose for the water supply as well as a valve actuated by a float.
The water in the diluted sulphuric acid in the battery cells evaporates due to the current density, i.e., the cyclic load of batteries driving vehicles, forklift trucks etc. To prevent the electrolytic level in the cells sinking below the minimum level, the batteries have to be checked at regular intervals and the cells refilled with chemically clean water.
Automatic devices as described above are already known to help save time and work in refilling. For this, the inlet of the filling cup of each battery cell is connected by a common pipe with a central tank from which the water is pumped by means of a pressure generator and fed into the cells. When the required electrolytic level is reached, the float closes the valve of the particular battery cell. Such a system is for example, described in German Utility Model No. 72 31 500.
German Utility Model No. 69 15 774 shows a multicellular accumulator with a filling device equipped with measuring electrodes projecting into the accumulator cells. As soon as the required electrolytic level is reached, magnetic valves, which stop the water supply, are closed by the measuring electrodes.
In another device of the kind described above, the float opening and closing the valve is connected by a U-shaped yoke with the valve body. The two vertical bars of the yoke are guided in longitudinal grooves in the valve housing while the float is additionally guided by a relatively long centrally situated sliding guide in its vertical movement. This kind of guide has a considerable disadvantage as the floating particles which are always present in diluted sulphuric acid of a battery cell can get into the guide channels so that the performance is impaired or even clogs up so that the opening and closing of the valve can not be guaranteed. This results in the necessity to dismantle and clean the respective parts, not to mention that due to the faulty closure of the valve, the water runs out and soils the cell surface. This itself cancels the advantages of automatic refilling against manual refilling of the battery cells. A further disadvantage of this known filling cup consists in the direct connection of the float with the valve body so that the power opening the valve is only equal to the buoyant force of the float. This leads into difficulties, especially at the time when the relatively long guiding channels of the float clog up. In addition to this, the water jet in this known filling tube system, supplied by the pipe connection, is in an unbroken flow directed at the valve body so that at times, the strong jet closes the valve prematurely before the required acid level in the cells have been reached.
The object of the invention is to improve a device based on the afore-mentioned systems in such a way that the motion of the float and of the valve body are extremely easy and not prone to clogging and even in case of sluggishness of the float guide the force exerted by the float is sufficient to actuate the valve unimpaired and safely.
In the invention this has been concluded by the connection of the float on a single centrally placed guide rod led through an opening in the body of the cup housing and at its upper end hinged with an amplifying lever for the transmission of the float movement to the valve body.
The solution provided by the invention has the distinct advantage that only one sliding guide for the float is required which can be kept so short that clogging by floating particles of the electrolytes can be largely avoided. In the event of this remote possibility of the slidability of the float being impaired, the buoyant force is still sufficient to close the valve as there is no direct connection between the float and valve but an amplifying lever which transmits the float movement to the valve body.
A further advantageous devel
REFERENCES:
patent: 2578926 (1951-12-01), Douglas
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