Liquid purification or separation – With repair or assembling means
Patent
1985-10-28
1986-12-30
Sever, Frank
Liquid purification or separation
With repair or assembling means
2103601, 210403, B01D 4514
Patent
active
046327533
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a strainer basket for strainers with at least one tubular sighting net open at either ends and being retained between two retaining rings connected each with its respective end of the sighting net, either end of the sighting net being secured between a retaining ring and a clamping ring surrounding said retaining ring.
Strainer baskets of said kind are for example used in strainers for clarification of liquids or concentration of liquid containing materials, e.g. within the dairy industry for clarification of milk products by straining off lumps of fat or for concentration of cheese particles by filtering off whey. They can as well be used for the filtering of waste water.
A strainer of the kind concerned is used in such a manner that the sift material, for instance milk or butter milk, is applied to the strainer basket at its one end and is axially passed through the strainer basket in set with its being made to rotate therein by means of a number of blades mounted on a pivotal shaft extending axially in the strainer basket so that the sift material is being hurled against the sighting net which detains solid particles, e.g. lumps of fat, while the liquid portion passes through the strainer meshes. The particles thus retained in the strainer basket may be transported to the other end of the strainer basket and discharged therefrom by means of a helicoid conveyor surrounding the above mentioned pivotal shaft.
It is known to secure the sighting net in such a strainer basket by means of clamping rings in the form of retaining strips which are tightened by hook or screw
ut-connections and which firmly secure the ends of the sighting net to the retaining rings, grooves cooperating with the retaining strips to securely clamp the sighting nets being provided on the outer circumference of said retaining rings.
Said fastening of the sighting net implies that effective cleaning of the strainer basket is made difficult. In particular, strainer baskets for dairy use must be cleaned quite frequently and enormously heavy demands on the cleaning are made. It is very difficult to fulfil these demands on strainer baskets with the above mentioned retaining means for the sighting nets, in particular due to the grooves in the retaining rings and the clamping members, i.e. hook locks and screw and thread elements on the retaining strips which are to be cleaned quite thoroughly. It is also a drawback that the mounting and demounting of sighting nets in case of retaining strips with screws require the use of tools.
It is a purpose of the present invention to provide a strainer basket, in which sighting nets can be mounted and demounted particularly easily and which, moreover, is particularly easy to clean effectively.
To this end a strainer basket of the kind mentioned by way of introduction is according to the invention characterized in that the clamping ring is a firm ring which by a guiding means may be moved axially across the retaining ring and being in this position pivotal in relation to the guiding means for abutment against at least one axial stop thereon.
Retaining strips and screw/thread-connections are completely avoided, and the same applies to grooves on the retaining rings, which may be completely smooth and thus extremely easy to clean. Sighting nets may further be mounted and demounted without the use of tools because the clamping ring shall only be slightly pivoted to engage and disengage, resp., the stop, which does not either require any kind of special knowledge.
In the following the invention is explained in detail by way of example on the basis of an embodiment with reference to the drawings, in which
FIG. 1 illustrates a known strainer basket inserted in a liquid strainer,
FIG. 2 is a strainer basket according to the invention, seen from the side, and
FIG. 3 is the strainer basket illustrated in FIG. 2, from the left in FIG. 2.
In FIG. 1 which illustrates a strainer basket with two sections a tubular sighting net is designated 5 and as shown it is fastened between two retaining
Jacobsen Finn V.
Jensen Peter
Schmidt & Jessen A/SD
Sever Frank
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