COMMINUTING DEVICE

• US 20180243747A1
• Filed: 02/11/2016
• Published: 08/30/2018
• Est. Priority Date: 03/18/2015
• Status: Active Grant

• Current Assignee: PMS Handelskontor Gmbh
• Original Assignee: PMS Handelskontor Gmbh
• Inventors: SCHARFE, Oscar, SCHARFE, Felix
• Granted Patent: US 10,639,639 B2
• Time in Patent Office: Days
• CPC Class Codes: B02C 13/205 arranged concentrically
• CPC Class Codes: B02C 13/26 Details

Abstract

The invention relates to a comminuting device including a cylinder casing which surrounds a comminuting chamber, in which several rotors can be operated independently from each other with individual drives, said rotors being driven by concentric shafts which are arranged concentrically to the central axis (z) of the comminuting chamber, said concentric shafts having a central shaft and at least one outer hollow shaft surrounding said central shaft. At least one lubricant line for connecting to a lubricant supply is arranged in the central shaft and/or in a shaft casing, the lubricant line being connected by at least one radial lubricant through guide to at least one bearing of the rotors.

Claims

1-14. -14. (canceled)

15. A comminution device comprising a cylinder surrounding a comminution chamber, in which a plurality of rotors are driven independently from each other by their own drives, which rotors are driven via at least one concentrical shaft which are arranged concentrically to a central axis (z) of the comminution chamber, the at least one concentrical shaft comprises a central shaft as well as at least one outer hollow shaft surrounding the central shaft, whereby in the central shaft and/or in a shaft sheath at least one lubricant pipe to be connected with a lubricant supply is arranged, the lubricant pipe is connected with at least one bearing of the plurality of rotors via a radial lubricant conduct wherein the at least one concentrical shaft comprises in the area of at least one concentrical shaft'"'"'s lubricant conduct a radial extending lubricant channel which abuts to a wall of an adjacent shaft in an area of the adjacent shaft'"'"'s lubricant conduct located therein.

16. The comminution device according to claim 15, wherein the at least one concentrical shaft'"'"'s lubricant conduct leads to an annular section in which a shaft bearing is located.

17. The comminution device according to claim 16, wherein the annular section is defined in a first axial direction by a bearing and in an opposite second axial direction by a lubricant seal.

18. The comminution device according to claim 17, wherein the lubricant seal is permeable to gas.

19. The comminution device according to claim 15, in which the radial extending lubricant channel comprises at least in an area abutting to the wall a contact material which has a low friction with respect to a material of the shaft.

20. The comminution device according to claim 15, wherein at an end face of the plurality of rotors the lubricant pipe is connected with an annular feed chamber.

21. The comminution device according to claim 15, wherein in the central shaft there is an inner space and/or between the at least one concentrical shaft there is at least one intermediate space the at least one inner/intermediate space is provided at least partially as a gas feed space in connection with a gas supply, the gas feed space is connected with at least one shaft bearing arranged between the at least one concentrical shaft.

22. The comminution device according to claim 21, wherein the gas feed space is connected to a rotary mounted end piece comprising a gas feed opening to be connected with the gas supply.

23. The comminution device according to claim 21, wherein at least one of the at least one concentrical shaft comprises in a shaft sheath a radially extending gas conduct being connected to a shaft bearing.

24. The comminution device according to claim 23, wherein the gas conduct leads to a first annular gas section which is defined in a first axial direction by a bearing and in an opposite second axial direction by an annular gas seal.

25. The comminution device according to claim 15, wherein the central shaft comprises an axial hollow space which is on one hand connected with an intermediate space via a gas conduct extending radially in the shaft sheath and which is on an other hand configured to be connected with a gas supply.

26. The comminution device according to claim 25, wherein the gas supply is realized by a fan.

27. The comminution device according to claim 21, wherein all of the at least one intermediate spaces between the at least one concentrical shafts are connected to a gas supply.