REFINER INSTALLATION

• US 3,589,629 A
• Filed: 09/16/1966
• Issued: 06/29/1971
• Est. Priority Date: 09/16/1966
• Status: Expired due to Term

• Current Assignee: Donald P. Michel, Franklin F. Landis, Herman W. Steiniger, Lawrence E. Skeen
• Original Assignee: Donald P. Michel, Franklin F. Landis, Herman W. Steiniger, Lawrence E. Skeen
• Inventors: Michel, Donald P., Steiniger, Herman W., Landis, Franklin F., Skeen, Lawrence E.
• Application Number:
  US04/580,114
• Time in Patent Office: 1,747 Days
• US Class Current: 241/251
• CPC Class Codes: B02C 7/11 Details

Abstract

An improved refiner installation characterized by a simplified base structure comprising a unique arrangement of integral lightweight unitized plates resistant to vibration and simply mounting in an optimal relation thereto an improved disc refiner assembly characterized by a refining chamber the surface portions of which are arcuate to form a pressure-resistant housing for the refining discs which like the base is fabricated of thin material. The invention also provides means advantageously and selectively adapting the installation optimally to function for pressurized refining or conventional refining. The refiner housing is further characterized by a segmented form lending economy of fabrication and simplicity of maintenance.

Claims

1. A double-disc refiner unit comprising a pair of relatively opposed cooperating refiner discs each of which rotates relative the other, a housing forming a chamber for said discs the interior wall surface of which is arcuately formed in both vertical and horizontal senses, said housing including a waist portion and detachable top and bottom portions, the interior surface of said waist portion of said housing including opposite portions of flatly arcuate contour connected by surface portions which are each arcuatelY contoured on a smaller radius, said top and bottom portions having an interior surface configuration complementary to that of said waist portion and said waist portion having oppositely projecting means for attachment thereof to said top and bottom portions.

2. A disc refiner unit as in claim 1 characterized by said waist portion being split in a vertical plane to provide therein a vertically coextensive plate section which is separable from the balance thereof, said balance having a U-shaped configuration.

3. A disc refiner unit as in claim 2 characterized by said housing being formed of four segments, said waist portion being capped to either end by said top and bottom portions which have a dome shape and form with said waist portion a thin-walled casing for said discs accommodating the operation thereof under highly pressurized conditions.

4. A disc refining unit as in claim 2 characterized by said separable plate section having therein an inlet aperture and means integrated therewith defining an inlet spout the delivery end of which opens to said inlet aperture.

5. A disc refiner unit including opposed cooperating refiner discs at least one of which rotates relative the other characterized by a housing forming a chamber for said discs the interior wall surface of which is arcuately formed in both vertical and horizontal senses, said housing comprising a case which is split in spaced planes transverse to said discs to either end of a central waist section of said housing to provide thereon separable domelike cap sections which are interchangeable, said waist section having a longitudinal dimension which is less than the comparable dimension of said discs.

6. A disc refiner unit as in claim 5 characterized by said waist section being split in a vertical plane immediately adjacent a side portion thereof.

7. A double-disc refiner unit including a housing, a pair of opposed refiner discs within said housing, means mounting said discs for individual rotation, each relative the other, said housing having a hollow shell-like form and comprising a thin walled case having interior surface portions thereof arcuately formed in both a horizontal and a vertical sense to provide a surface in enclosing and relatively adjacent spaced relation to said relatively rotatable discs and said case being split in spaced planes transverse to said discs to either end of a central waist section of said housing to provide thereon separable domelike cap sections, said waist section including means defining an inlet to said housing, means defining an outlet from said housing, means for sealing said inlet and outlet to define thereby a pressurized double disc refiner and said waist section having a longitudinal dimension which is less that the dimension of said discs in the same sense.

8. A disc refiner unit as in claim 7 characterized by said discs respectively mounting to adjacent end portions of a pair of oppositely directed powered shaft means, said shaft means projecting from said discs through openings in generally opposite wall portions of said housing, there being seal means about projected portions of said shafts to maintain a seal thereabout in respect to said housing, at least one of said seal means having a housing thereabout in the form of a cartridge and there being means providing for a bearing relation of said cartridge in respect to said housing, said cartridge being fixed for movement with the related shaft to facilitate the axial adjustment of the shaft to vary the operative spacing between said discs, while maintaining a seal of said housing.

9. A disc refiner unit as set forth in claim 7 characterized by shaft means, said discs respectively mounting on adjacent ends of said shaft means within said housing, said shaft means being relatively oppositely projected to project through seal means in connection with and defining openings from said housing, said housing having spout means defining said inlet which is positioned to the rear of one of said discs, tHere being means for passage of material fed through said inlet spout through said of one of said discs for discharge between said discs and from said housing, said one of said discs having on the back thereof most adjacent said inlet spout wiper means consisting of abutted flat plate means operating on rotation of the disc to create a fanlike pressured flow thereabout in a manner to inhibit the movement of materials fed to and refined between said disc assemblies to the back of said one disc.

10. A double-disc refiner as set forth in claim 7 characterized by said waist portion being split in at least one substantially vertical plane to provide at one side thereof a separable platelike segment which includes said inlet and said waist portion having means integral therewith commonly to project from a horizontal medial plane thereof flange means to serve for the support of said housing, said waist portion including therein means adapted to provide an outlet from said housing.

11. Apparatus as set forth in claim 9 characterized by the other said disc mounting to the rear thereof blade segments which are perpendicularly projected both rearwardly and peripherally of said other disc whereby on rotation thereof to move through the interior of said housing adjacent its vertical center to thereby preclude accumulations of material on the interior surface of said housing.

12. A disc refiner unit including opposed cooperating refiner discs each of which rotates relative the other characterized by a housing forming a chamber for said discs interior wall surface portions of which are spaced from said discs and arcuately formed in both vertical and horizontal senses, said refiner discs being respectively fixed to oppositely projected drive shafts, seal means provided about said drive shafts as they project from said housing said housing being formed of simple segments by splits in planes thereof which are vertically spaced and directed in a sense transverse to the body of said discs to produce domelike cap sections and a central waist section of said housing about said discs, said waist section including means defining an inlet to said housing, and an outlet from said housing displaced from said inlet and said waist section having integrated flange means projecting therefrom in a horizontal medial plane intermediate its vertical extremities.

13. A double disc refining installation as set forth in claim 12 characterized by supports for said flange means comprising vertically disposed flat plates the upper and lower extremities of which are respectively angled to provide upper and lower base supports for said housing, further plate means interconnecting said plates at longitudinally spaced intervals to form a rectangular base structure elevating said housing from an underlying floor structure, and said lower supports, constituting portions of said plates, having thereunder pads which are positioned in the areas of said interconnecting plate means, said plate means interconnecting said plates including end panels having a lesser vertical depth than said plates and the lower extremity thereof in spaced elevated relation to said lower supports and mounting thereon pad means, said oppositely projected drive shafts mounting thereon the respective discs and projecting from said housing to the respective end panels, at least two of said plate means providing inboard partitions intermediate said end panels forming a well for said housing and mounting thereon bearing means for said drive shafts, said end panels, through the medium of the pads thereon, mounting further bearing means for said drive shafts, and motor means about said drive shafts between the respective inboard partitions and end panels, said end panels providing thereunder paths for flow of air directed inwardly from the respective ends of said base structure to move under and about said motor means.

14. Apparatus as set forth in claim 1 characterized by said housing having means defining an inlet thereto and an oUtlet therefrom and in connection therewith means providing a seal of said inlet and said outlet during movement therethrough of a pressured flow of slurry, said discs having in connection therewith drive shafts which project through generally opposite portions of said housing, there being sealing means about said drive shafts as they project from said housing, means in connection with said drive shafts to produce a relative rotation of said disc means for refining the substance of the slurry as it moves through said housing, said housing having base support means in a form of a rectangular frame including sidewalls formed of flat plates the upper and lower extremities of which are bent inwardly generally coextensive therewith, there being means balancing said housing on the upper bent portions of said plates, further means defining end walls interconnecting said sideplates and providing for a free passage therethrough of air, integrated plate means bridging said sideplates intermediate their ends to form a well for said housing and mount on the upper edge thereof bearings for said drive shafts, said drive shafts further mounting electrical rotors and there being means inwardly of said base adjacent said end panels nesting a stator about each of said rotors to form therewith a motor for drive of the related shaft.