Device for shredding material, in particular medical waste material

• US 10,695,771 B2
• Filed: 03/29/2016
• Issued: 06/30/2020
• Est. Priority Date: 03/30/2015
• Status: Active Grant

• Current Assignee: Weima Maschinenbau GmbH
• Original Assignee: Weima Maschinenbau GmbH
• Inventors: Friz, Martin
• Primary Examiner(s): Michalski, Sean M
• Application Number:
  US15/083,599
• Publication Number:
  US 20160288133A1
• Time in Patent Office: 1,554 Days
• Field of Search: 241222, 241224, 241225, 241243, 241242, 241280-282, 99286, 99546, 99553, 99564-566, 99574-576, 99593-599, 99617, 99621
• CPC Class Codes: B02C 18/0084 specially adapted for disintegrating garbage, waste or sewage
• CPC Class Codes: B02C 18/08 within vertical containers B02C18/062, B02C18/065 take precedence
• CPC Class Codes: B02C 18/145 with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
• CPC Class Codes: B02C 18/2233 of ram or pusher type
• CPC Class Codes: B02C 18/2275 using a rotating arm
• CPC Class Codes: B02C 19/0075 specially adapted for disintegrating medical waste sterilisation of refuse A61L11/00; disposal of medical waste B09B3/00
• CPC Class Codes: B02C 2018/168 User safety devices or measures in shredders
• CPC Class Codes: B02C 2018/188 Stationary counter-knives; Mountings thereof

Abstract

A device for shredding material has a shredding rotor, which revolves about an axis of rotation and supports at least one blade, and a first counter-blade which cooperates with the blade of the shredding rotor. A feed plate is provided here, which is mounted to be rotatable about a pivot axis and which is connected to an actuator, in particular to an electric motor, so that, with the aid of the actuator, the feed plate can be brought into a feed position, in which the material to be shredded can lie on a first main surface of the feed plate and can slide along this in the direction of the shredding rotor, and into a first pressing position in which the material to be shredded is likewise pressed with the first main surface of the feed plate against the shredding rotor and shredded between the blade and the first counter-blade.

Claims

1. A device for shredding material, comprising:

a) a rotor that revolves about an axis of rotation and supports at least one blade, and

b) a first counter-blade, which cooperates with the blade of the rotor; and

c) a feed plate rotatable about a pivot axis so that a position of the feed plate about the pivot axis is variable, and wherein

d) the pivot axis of the feed plate is arranged with respect to the axis of rotation of the rotor so that

the feed plate can be brought into a feed position in which the material to be shredded can lie on a first main surface of the feed plate and can slide along the first main surface in a direction of the rotor, and wherein

the feed plate can be brought into a first pressing position, in which the material to be shredded is also pressed with the first main surface of the feed plate against the shredding rotor and is shredded between the blade and the first counter blade,

wherein, upon a change in the direction of rotation of the rotor, the feed plate can be brought into a second pressing position in which the material to be shredded is pressed with a second main surface of the feed plate against the rotor and is shredded between the blade and the second counter-blade, wherein the feed plate has a pivoting range of at least 200°

about the pivot axis.

2. The device according to claim 1, wherein, in the feed position, the inclination of the first main surface of the feed plate with respect to the horizontal is variable in a range of 5°

to 85°

.

3. The device according to claim 2, wherein the range is 10°

to 45°

.

4. The device according to claim 3, wherein the range is 15°

to 25°

.

5. The device according to claim 1, wherein the axis of rotation of the rotor and the pivot axis of the feed plate define a plane which divides the device into two sub-regions, the first counter-blade being located in a first of the sub-regions and a second counter-blade is located in a second of the sub-regions.

6. The device according to claim 5, wherein the feed plate is mounted at one end so as to be rotatable about the pivot axis.

7. The device according to claim 6, wherein the axis of rotation of the rotor and the pivot axis of the feed plate are spaced from one another so that, upon a change in a direction of rotation of the rotor, the material to be shredded is fed to the second counter-blade.

8. The device according to claim 6, wherein the second counter-blade has a cutting geometry that differs from a cutting geometry of the first counter-blade.

9. The device according to claim 8, wherein the second counter-blade is not arranged along a radius of the rotor.

10. The device according to claim 1, further comprising an actuator provided to rotate the feed plate, and a control that controls the actuator of the feed plate and the shredding rotor so that power input of the rotor does not exceed 3.5 kW.

11. The device according to claim 10, wherein the actuator is an electric motor.