# US 5,330,647 A · Filter device for separating coarse components from liquid components

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,330,647 A
- Document ID: US5330647A
- Status: Granted
- Kind: A
- Application number: 07/868,407
- Filed: 1992-04-14
- Granted: 1994-07-19
- Earliest claimed: 1991-04-19
- Assignees: Maschinenfabrik Hennecke GmbH
- Inventors: Hans-Michael Sulzbach; Ferdinand Althausen; Reiner Raffel
- Web page: https://patentgrep.com/patent/US5330647A

## CPC

- B29B 13/10: by grinding, e.g. by triturating; by sieving; by filtering
- B07B 13/04: according to size
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B07B: SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C)

## Abstract

The invention is directed to a filter device for the removal of coarse components from a liquid component used in the manufacture of plastic materials. The filter device has a hollow housing in which a rotor is mounted. The rotor is provided with agitator blades which comb out any dead-flow zones.

## Claims

### Claim 1

A filter device for separating coarse components from liquid components for the manufacture of plastic materials, which contain powdered, fine-grain or fibrous solid particles comprising: a housing having a rotor mounted therein, the circumferential face of said rotor forming a filter gap with the inner circumferential face of said housing, said rotor being equipped with agitator blades which comb through dead-flow spaces of said housing, said housing being provided with an inlet in the region of the inner circumferential face, a sump outlet spaced therefrom and an outlet on the side thereof.

### Claim 2 (depends on 1)

The filter device of claim 1, wherein said rotor has a circumferential groove, into which said inlet opens and from which said sump outlet opens out.

### Claim 3 (depends on 2)

The filter device of claim 2, wherein said rotor is provided with axial holes.

### Claim 4 (depends on 1)

The filter device of claim 1, wherein the circumferential face of said rotor defining the filter gap is provided with teeth.

### Claim 5 (depends on 1)

The filter device of claim 1, wherein the shaft of the rotor is mounted horizontally and wherein the inlet is provided at the top and the sump outlet at the bottom of said housing.

### Claim 6 (depends on 1)

The filter device of claim 1, wherein the inner circumferential face of said housing is formed by an exchangeable spacer ring.

### Claim 7 (depends on 1)

The filter device of claim 1, wherein the agitator blades are formed as exchangeable parts.

### Claim 8

A filter device for separating coarse components from liquid components which contain powdered, fine-grain or fibrous solid particles comprising:
a) a housing comprising a hollow chamber defined by a circular base, a circular top, and a cylindrical wall connecting said base and said top, said cylindrical wall having an inside surface, said housing being provided with
i) an inlet in said cylindrical wall for the introduction of liquid component into said chamber,
ii) a sump outlet spaced away from said inlet for removal of filtered material from said chamber, and
iii) an outlet located either in said base or in said top for allowing liquid component to pass through said housing, and
b) a rotor mounted in said housing, said rotor having an outer circumferential surface which forms a filter gap with said inside surface, and wherein said rotor is provided with agitator blades which comb through any dead-flow spaces within said hollow chamber.