Filter presses and a method of cleaning same
OwnerRonald Shackleton, Christopher J. Woodruff +1inventors
InventorsRonald Shackleton, Christopher J. Woodruff, Ian M. Fletcher
Life of this patent
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Abstract
A filter press comprises a series of plates and frames separated by filtering sheets into which a liquid to be filtered can be fed via at least two inlet pipes. An outlet pipe is provided to enable filtrate to egress from the press leaving the filtered residue behind in the frames. In order to clean the press, valve means are provided to close off the outlet pipe and to isolate the inlet pipes from each other. A cleaning liquid can then be fed into one of the inlet pipes to pass into the frames and flush out the filtered out residue therefrom via the other inlet pipe.
Claims15
A method of cleaning a plate and frame filter press which has two or more liquid inlet pipes for receiving a liquid to be filtered and a filtrate outlet pipe for discharging filtrate during a filtering operation, the method comprising the steps of obturating the filtrate outlet pipe, isolating one of the inlet pipes from each other inlet pipe to form out of said inlet pipes two separate channels into and out of the press, and flushing out any filtrated out residue contained within the press by feeding a cleaning fluid into the press down one of said channels and recovering the fluid with the residue from the other channel.
A plate and frame filter press having, for filtration purposes, two or more liquid inlet pipes for receiving a liquid to be filtered, a common inlet manifold to which said inlet pipes are connected, a filtrate outlet pipe, and, for cleaning purposes, comprising valve means connected to said inlet pipes and said outlet pipe so that the filtrate outlet pipe can be obturated and one of the inlet pipes isolated from each other inlet pipe to form from said inlet pipes two separate channels, one into and one out of the press, means for feeding cleaning fluid into said separate channel into the press, and means for removing residue and cleaning fluid from said separate channel out of the press, whereby one of said channels can be fed with a cleaning fluid via said one inlet pipe and the other channel connected to drain to clean the press.
Dependencies are inferred from the claim text.