US 2026/0145105 A1 · Filtering Apparatus

Abstract

A filtering apparatus for filtering a plastic melt. A filter pin is received in an axially displaceable and rotatable manner in a pin receptacle of a housing. The filter pin has a filtering device which, in an operating position of the filter pin, is arranged between inlet and outlet channels of the housing and connects the inlet channel to the outlet channel, as well as a discharge channel, which, in a starting position of the filter pin, is flow-connected to the inlet channel and leads past the filtering device to a discharge outlet of the filter pin. An inlet port of the discharge channel in the operating position of the filter pin is rotationally offset relative to the inlet channel of the housing and, the inlet port of the discharge channel in the starting position of the filter pin is arranged so as to overlap with the inlet channel.

Claims18

Dependent claims

A filtering apparatus comprising:

a housing comprising:
an inlet channel;
and
a pin receptacle;
and
a filter pin comprising a discharge channel having an inlet port located on an outer circumference of the filter pin and configured to lie in a circumferential sector of the filter pin;
wherein:
the filter pin is configured to be received in an axially displaceable and rotatable manner in the pin receptacle of the housing;
the filter pin is further configured to assume different rotational positions in the pin receptacle of the housing, including an operating position and a starting position;
in the operating position of the filter pin, the inlet port of the discharge channel of the filter pin is rotationally offset relative to the inlet channel of the housing;
and
in the starting position of the filter pin, the inlet port of the discharge channel of the filter pin is arranged so as to overlap with the inlet channel of the housing.

9 more elements

A filtering apparatus comprising:

a housing comprising:
an inlet channel;
an outlet channel;
and
a pin receptacle;
and
a filter pin configured to be received in an axially displaceable and rotatable manner in the pin receptacle of the housing, the filter pin comprising:
a filter portion with a filtering device;
a discharge outlet;
and
a discharge channel having an inlet port located on an outer circumference of the filter pin and configured to lie in a circumferential sector of the filter pin;
and
a rotary drive for rotating the filter pin in the pin receptacle of the housing;
wherein:
the filter pin is further configured to:
be arranged between the inlet and outlet channels of the housing;
and
assume different rotational positions in the pin receptacle of the housing, including an operating position, a starting position, and a filter change position;
in the operating position of the filter pin:
the filtering device of the filter portion of the filter pin is configured to be arranged between the inlet and outlet channels of the housing;
the filtering device of the filter portion of the filter pin is configured to connect the inlet channel of the housing to the outlet channel of the housing, as well as the discharge channel of the filter pin;
and
the inlet port of the discharge channel of the filter pin is configured to be rotationally offset relative to the inlet channel of the housing;
and
in the starting position of the filter pin:
the discharge channel of the filter pin is configured to be flow-connected to the inlet channel of the housing and lead past the filtering device of the filter portion of the filter pin to the discharge outlet of the filter pin;
and
the inlet port of the discharge channel of the filter pin is configured to be arranged so as to overlap with the inlet channel of the housing.

25 more elements

Dependencies are inferred from the claim text.

Filtering Apparatus

Life of this patent

Filtering Apparatus

Life of this patent

Abstract

Claims18