Closing unit for the nozzle strip on a nozzle beam for hydrodynamically needling fibres of a web of fabric
AssigneeFleissner GmbH & Co., Maschinenfabrik
InventorGerold Fleissner
Life of this patent
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Abstract
During the construction of the nozzle beam according to DE-A-195 01 738, the insertion slit for the nozzle strip (14) is sealed on the front side of the nozzle beam by means of a screwed cover (16,17). It is easier to exchange a nozzle strip (14) if a special closing unit (26) having an opening (3) for the nozzle strip is provided on the front side, and said opening (30) is closed in a liquid-tight manner by a simply fixed insertion mandrel (31).
Claims19
Jet manifold on a device for generating extremely fine fluid jets used in the hydrodynamic jet impingement of fibers of a web moving along the manifold, such as a fiber web, tissue, etc., or a woven or knit, which manifold is composed of an upper section extending over the working length of the web, and of a lower section, wherein
- a) a pressure chamber of round cross-section is located along the length of the upper section, the fluid being supplied under pressure, for example, to the front side of the chamber;
- b) a pressure distribution chamber is provided in the lower section in parallel to the above;
- c) the pressure distribution chamber discharges into a narrow fluid outlet slit opposite the cross-section of the pressure distribution chamber;
- d) a jet strip is mounted in a fluid-tight fashion within the jet manifold above the fluid outlet slit;
- e) this jet strip may be replaced through a closable opening on the front side of the jet manifold,
- characterized in that
- f) a closing unit (26) is provided on the closable opening which
- g) is provided at the level of the jet strip mounting position with an insertion slot (29) for the jet strip (14), which slot
- h) is closable by an insertion mandrel (31).
Jet manifold according to one of the foregoing claims, characterized in that the closing unit (26) has a passage (32) oriented vertically to the axis of the insertion opening (30), through which passage the bolt (34, 34′) is movable, and that the insertion mandrel (31) has an alignment hole (33) matched to the diameter of the bolt (34, 34′).
Jet manifold according to one of the foregoing claims, characterized in that the front side of the insertion mandrel (31) is provided with a retainer for the jet strip (14).
Jet manifold according to one of the foregoing claims, characterized in that the jet strip (14) has a hole (44) at one end which engages the retainer of the closing unit (26).
Jet manifold according to one of the foregoing claims, characterized in that an O-ring (35) is provided around the circumference of the insertion mandrel (31).
Jet manifold according to one of the foregoing claims, characterized in that a grip (39) is provided on the end of the insertion mandrel (31) opposite the retainer of the jet strip (14).
Jet manifold according to one of the foregoing claims, characterized in that the closing unit (26) projecting preferably opposite the front side of the jet manifold (1, 2) is composed of a block, the lateral ends of which on both sides of the insertion opening are attached by being screwed together (27, 28) to the front side of the jet manifold (1, 2), in the center section of which the insertion slot (29) is provided for the jet strip (14), and this strip is retained there.
Dependencies are inferred from the claim text.