Tube pressure filter

A tube pressure filter comprising:

• an inner assembly;
• a generally tubular outer assembly which surrounds the inner assembly to provide between the assemblies an annular chamber;
• an impermeable diaphragm which is disposed within the outer assembly to divide the annular chamber into inner and outer compartments;
• a filter element disposed within the inner compartment;
• means for supplying a mixture of a liquid and a particulate solid to the inner compartment;
• and
• means for supplying fluid under pressure to the outer compartment so as to cause the liquid in the inner compartment to be forced through the filter element leaving the particulate solid material deposited on the filter element, the inner assembly comprising a core and two end sections, at least one of the end sections comprising an annular member which is a sliding fit on the core, and a retaining device which engages the core and provides an abutment preventing displacement of the annular member off the end of the core, the end section also comprising releasable locking means maintaining the retaining device in engagement with the core.