Liquid reconditioning system

专利名称：Liquid reconditioning system发明人：William A. Shoquist申请号：US06/185157申请日：19800908公开号：US04317732A公开日：19820302

摘要：A liquid reconditioning system including first and second storage tanks forstoring reconditioned liquid and liquid to be reconditioned, respectively. Reconditionedliquid is withdrawn from the first storage tank for use, as required, and returned to thesecond storage tank. A filter is connected to receive liquid withdrawn from the secondtank to filter that liquid and transfer it to the first tank. The present invention detects acondition representative of filter blinding and responds to that condition to

automatically regenerate the filter. In a preferred embodiment, the filter is a diatomitefilter with filter regeneration being accomplished by mechanical diatomite displacement.A valve at the filter output closes that output during diatomite displacement and thensequentially connects the filter output to the second storage tank, for a predeterminedperiod, and then to the first storage tank. Filter blinding may be detected by monitoringthe liquid level in the first storage tank, the decrease in that liquid level indicating thatthe liquid flow through the filter is below that necessary to maintain an adequate supplyfor use. Alternatively, a flow meter may be employed at the output of the filter to assurethat the flow through the filter is adequate to satisfy the usage requirements.

申请人：ANDREW ENGINEERING, INC.

代理机构：Schroeder, Siegfried, Vidas, Steffey & Arrett

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