Filtering device
AssigneeMetso Automation Oy
InventorVeikko Kyllönen
Life of this patent
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Abstract
The invention relates to a filtering device for taking a filtrate sample from liquid matter containing solid particles. The filtering device comprises two filter parts and at least one filtering slot between the filter parts. The filter parts are adapted to move in relation to each other in such a manner that the width of the filtering slot changes when the filter parts move in relation to each other. When taking a sample from a process, the filtering slot between the filter parts is at its smallest, and it is adapted to filter the sample while the liquid matter being measured flows from the process to the measurement. When rinsing the filtering device against the sampling direction, the filter parts are adapted to move away from each other, whereby the filtering slot widens.
Claims9
A littering device, comprising:
- opposing duct-shaped filter portions, one of the filter portions having an operable axial end defining a projection and the other of the filter portions having an operable axial end defining a receptacle complementarily configured with respect to and capable of receiving the projection, the operable axial ends of the filter portions being operably engageable such that the projection and the receptacle cooperate to define at least one filtering slot therebetween, the at least one filtering slot being configured to change in width as the filter portions are moved axially in relation to each other, the filter portions being further configured such that a first pressure associated with a filtrate sample received through the at least one filtering slot in a sample flow direction causes tile filter portions to move toward each other so as to minimize the width of the at least one filtering slot, and such that a second pressure associated with rinsing through the at least one filtering slot opposite to the sample flow direction causes the filter portions to move apart and increases the width of the at least one filtering slot so as to facilitate rinsing therefrom of solid particles filtered by the at least one filtering slot.
Dependencies are inferred from the claim text.