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Title:
HYDROCYCLONE APPARATUS, SYSTEMS AND METHODS
Document Type and Number:
WIPO Patent Application WO/2019/126393
Kind Code:
A1
Abstract:
Hydrocyclones and related apparatus, systems and methods are disclosed for classifying aggregate material. Some embodiments include a removable apex. In some embodiments, an outlet apparatus such as a duckbill valve is supported on a sleeve; the sleeve is optionally removably mounted to the apex. The sleeve optionally includes an interior lining such as a urethane lining.

Inventors:
GRIMM, Lafe (315 E. Highway 28, Morris, Minnesota, 56267, US)
HANSON, Shane (315 E. Highway 28, Morris, Minnesota, 56267, US)
ILOT, Paul (315 E. Highway 28, Morris, Minnesota, 56267, US)
Application Number:
US2018/066608
Publication Date:
June 27, 2019
Filing Date:
December 19, 2018
Export Citation:
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Assignee:
SUPERIOR INDUSTRIES, INC. (315 E. Highway 28, Morris, Minnesota, 56267, US)
International Classes:
B03B5/34; B03B9/00; B04C5/04; B04C5/081; B04C5/13; B04C5/14
Attorney, Agent or Firm:
FRONEK, Todd (Larkin Hoffman Daly & Lindgren LTD, 8300 Norman Center Drive, Suite 100, Minneapolis Minnesota, 55437, US)
Download PDF:
Claims:
CLAIMS

1. A hydrocyclone for classifying aggregate material, comprising:

a feed inlet;

an inlet head in fluid communication with said feed inlet;

a vortex finder extending at least partially into a body portion of said inlet head;

a taper section;

an overflow outlet supported by said taper section and in fluid communication with said vortex finder; and

an underflow outlet assembly in fluid communication with said body portion of said inlet head, said underflow outlet assembly comprising:

an apex;

a shell made of a first material, said shell removably mounted to said apex, the shell including an interior lining made of a second material, said apex being at least partially received within said interior lining; and

a valve removably mounted to said shell.

2. The hydrocyclone of claim 1, wherein when said apex is mounted to said taper section, an inner surface of said apex and an inner lining of said taper section form a substantially continuous surface.

3. The hydrocyclone of claim 2, wherein said substantially continuous surface has a constant slope.

4. The hydrocyclone of claim 1, wherein said apex includes an upper lip and an upper annular portion, wherein said upper lip extends radially outwardly from said upper annular portion.

5. The hydrocyclone of claim 4, wherein said upper lip includes a plurality of openings for receiving a fastener therethrough.

6. The hydrocyclone of claim 4, wherein said upper lip includes one or more small annular extrusions, wherein said annular extrusions extend upward from an upper surface of said upper lip.

7. An underflow outlet assembly for use with a hydrocyclone having a taper section, said underflow outlet comprising:

an apex;

a shell made of a first material, said shell removably mounted to said apex, the shell including an interior lining made of a second material, said apex being at least partially received within said interior lining; and

a valve removably mounted to said shell.

8. The underflow outlet assembly of claim 7, wherein when said apex is mounted to said taper section, an inner surface of said apex and an inner lining of said taper section form a substantially continuous surface.

9. The underflow outlet assembly of claim 8, wherein said substantially continuous surface has a constant slope.

10. The underflow outlet assembly of claim 7, wherein said apex includes an upper lip and an upper annular portion, wherein said upper lip extends radially outwardly from said upper annular portion.

11. The underflow outlet assembly of claim 10, wherein said upper lip includes a plurality of openings for receiving a fastener therethrough.

12. The underflow outlet assembly of claim 10, wherein said upper lip includes one or more small annular extrusions, wherein said annular extrusions extend upward from an upper surface of said upper lip.

13. A method of replacing a first apex of a hydrocyclone with a second apex having a shorter length than the first apex, the method comprising:

removing the first apex; obtaining the second apex by performing one of the steps of cutting off part of a lower portion of the first apex and obtaining a new second apex;

removably mounting the second apex to a shell made of a first material, said shell including an interior lining made of a second material, said apex being at least partially received within said interior lining; and

removably mounting a valve to said shell.

14. The method of claim 13, wherein the second apex has an greater opening diameter Oa than the first apex.

15. The method of claim 13, wherein the shorter length of the second apex does not change the effective overall height of the hydrocyclone.

16. The method of claim 13, wherein the shorter length of the second apex does not expose metal to material being processed by the hydrocyclone.

17. The method of claim 13, further comprising:

supporting said apex on a taper section of the hydrocyclone, wherein when said apex is mounted to the taper section, an inner surface of said apex and an inner lining of said taper section form a substantially continuous surface.

18. The method of claim 17, wherein said substantially continuous surface has a constant slope.

19. The method of claim 17, wherein said apex includes an upper lip and an upper annular portion, wherein said upper lip extends radially outwardly from said upper annular portion.

20. The method of claim 19, wherein said upper lip includes a plurality of openings for receiving a fastener therethrough, wherein said upper lip includes one or more small annular extrusions, and wherein said annular extrusions extend upward from an upper surface of said upper lip.

Description:
HYDROCYCLONE APPARATUS, SYSTEMS AND METHODS

BACKGROUND

[0001] Classifying apparatus such as hydrocyclones and classifying plants (e.g., those including hydrocyclones, etc.) are used to wash and/or classify material such as sand. Some classifying apparatus include an underflow outlet including an apex.

BRIEF DESCRIPTION OF THE DRAWINGS

[0002] FIG. l is a side elevation view of an embodiment of a hydrocyclone.

[0003] FIG. 2 is an exploded perspective view of an embodiment of an underflow outlet assembly of the hydrocyclone of FIG. 1.

[0004] FIG. 3 is a sectional view along the section A-A of FIG. 1.

DESCRIPTION

[0005] Referring to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, FIG. 1 illustrates an embodiment of a hydrocyclone 10. The hydrocyclone 10 optionally comprises an inlet head 200 having a feed inlet 230 for receiving aggregate material (e.g., solids of varying density suspended in a liquid slurry, etc.) at an inlet opening I. The inlet head 200 optionally imposes a centripetal force on the aggregate material as the aggregate material descends (e.g., vertically as assisted by gravity) along an optionally generally spiral path along the circumferential walls of the inlet head into a taper section 300. The taper section 300 optionally comprises a hollow frustum and is optionally mounted (e.g., removably mounted, etc.) to the inlet head 200 at a lower end thereof. The aggregate material optionally descends in an optionally generally spiral pattern around circumferential walls of the taper section 300 into an underflow outlet assembly 100. The underflow outlet assembly 100 is optionally mounted (e.g., removably mounted, etc.) to the taper section 300 at a lower end thereof, e.g., in some embodiments to a bottom subsection 310 (e.g., frustroconical section) of the taper section 300. A first portion of the aggregate material (e.g., relatively coarse solids, etc.) optionally exits the underflow outlet assembly 100. The first portion of aggregate material optionally exits from the underflow outlet assembly 100 at an underflow outlet opening Ou. A second portion of the aggregate material (e.g., relatively fine solids and liquid, etc.) optionally forms a vortex which optionally ascends in a generally volute manner about a central axis of the hydrocyclone 10 into a vortex finder which optionally comprises a hollow tube extending vertically through a lid of the inlet head 200.

[0006] The vortex finder optionally leads the second portion of aggregate material into an overflow discharge outlet 400. The discharge outlet 400 optionally directs the second portion of aggregate material to an overflow outlet opening. In some embodiments, the discharge outlet 400 directs the second portion of aggregate material into a siphon 50 having an outlet opening Oo optionally disposed below the outlet Ou of the underflow outlet assembly 100.

[0007] Referring to FIGs. 2 and 3, the underflow outlet assembly 100 is illustrated in more detail. The underflow outlet assembly is optionally supported on (e.g., removably mounted to) a lower end of the taper section 300 (e.g., to a lowermost subsection 310 thereof). The taper section 300 optionally includes a shell 318 (e.g., metal shell) and an inner lining 316 (e.g., urethane lining). The inner lining 316 (or in some embodiments the shell 318) optionally includes an annular portion 317 at a lower end thereof. The annular portion 317 optionally extends radially outwardly of the lower end of the shell 318. The annular portion 317 optionally includes one or more openings for receiving fasteners (e.g., bolts) therethrough.

[0008] The underflow outlet assembly 100 optionally includes an apex 110 optionally removably mounted to the taper section 300. The underflow outlet assembly 100 optionally includes a sleeve 120 (e.g., made of metal or other material) optionally removably mounted to the apex 110 and/or removably mounted to the taper section 300. The sleeve 120 optionally includes an interior lining 130 (e.g., annular lining) which may be made of urethane, rubber, ceramic, or another material. The underflow outlet assembly 100 optionally includes valve 150 (e.g., a duckbill valve which may be made of rubber or other material) for receiving material from the lower opening Oa of the apex. The valve 150 is optionally removably mounted to the sleeve 120, e.g., by a removable clamp 152 or by threading, one or more fasteners, etc. In other embodiments, a splash skirt (e.g., made of metal, polymer or rubber, etc.) may be disposed around the lower opening Oa of the apex. In still other embodiments, the underflow outlet 140 may simply release materials from the apex into atmosphere without use of a splash skirt or valve.

[0009] Referring to FIGs. 2 and 3, the apex 110 optionally includes an opening (e.g., frustum- shaped opening) therethrough forming an inner surface 116. When the apex is attached to the taper section 300, the inner surface 116 and inner lining 316 optionally form a substantially continuous surface which optionally has a substantially constant slope Q (e.g., relative to a vertical axis of the hydrocyclone 10). The apex optionally includes an upper lip 112 (e.g., annular lip) which optionally extends radially outwardly from a an upper annular portion 114 of the apex. The upper lip 112 optionally includes a plurality of openings 113 for receiving a fastener (e.g., a bolt) therethrough. In some embodiments, the upper lip 112 includes one or more small annular extrusions 111 which extend upward from an upper surface of the upper lip 112 and optionally improve the seal between the apex and the taper section. The apex 110 optionally includes a lower portion 118 (e.g., annular portion) which optionally has a generally cylindrical outer surface.

[0010] The sleeve 120 optionally includes a shell 122 (e.g., cylindrical shell which may be made of metal or other material). The sleeve 120 optionally includes an upper lip 124 (e.g., annular lip which may be made of metal or other material) which may be mounted (e.g., by welding) to the sleeve 120. The upper lip 124 optionally includes one or more openings 125 for receiving a fastener (e.g., bolt) therethrough. A lower annular lip 129 is optionally formed as a part with or mounted to the lower end of sleeve 120. A lining 130 (e.g., annular lining which may be made of urethane, rubber, ceramic or other material) is optionally disposed inside the shell 122 and may be mounted thereto (e.g., by bonding, molding, etc.). The lining 130 optionally has an upper surface 132 (e.g., annular upward-facing surface).

[0011] In some embodiments, a mounting assembly 320 including a ring 322 with one or more openings 325 for receiving fasteners therethrough such as bolts 323. In an assembled state, one or more bolts 323 optionally extend through openings in the ring 322, the annular portion 317, the lip 112, and the lip 124. A nut 324 is optionally attached to each bolt 323 such that the taper section, apex and/or sleeve are mounted and/or tightened together upon tightening of the nut 324. [0012] In some embodiments, the outer surface of the upper annular portion 114 of apex 110 is at least partially received (e.g., slidingly received, press-fit, etc.) in the shell 122 of sleeve 120. In some embodiments, the outer surface of the annular lower portion 118 of apex 110 is at least partially received (e.g., slidingly received, press-fit, etc.) in the lining 130 of sleeve 120. A lower surface of the upper annular portion 114 optionally at least partially contacts (e.g., abuts against, etc.) the upper surface 132 of the lining 130.

[0013] In some embodiments, the apex 110 may be shortened (e.g., by cutting off part of the lower portion 118 thereof such as along a horizontal plane) or replaced with a shorter apex. It should be appreciated that shortening the apex 110 optionally increases the diameter of opening Oa, which optionally modifies operating characteristics of the hydrocyclone 10. Shortening the apex 110 optionally does not change the effective overall height of the hydrocyclone 10 (for example, because in some embodiments the height of sleeve 120 and the mounting location of valve 150 is optionally unchanged by modifying the height of the lower portion 118 of the apex. It should also be appreciated that shortening the apex 110 optionally does not expose metal (e.g., metal of shell 122) to material being processed by the hydrocyclone 10; for example, because in some embodiments the lining 130 extends upwardly above a lower end of the apex 110.

[0014] Some hydrocyclone embodiments described herein may operate according one or more operating principles disclosed in U.S. Patent No. 4,317,716 and International Patent Application No. PCT/US 17/43276, both of which are hereby incorporated by reference herein in their entirety.

[0015] Although various embodiments have been described above, the details and features of the disclosed embodiments are not intended to be limiting, as many variations and modifications will be readily apparent to those of skill in the art. Accordingly, the scope of the present disclosure is intended to be interpreted broadly and to include all variations and modifications within the scope and spirit of the appended claims and their equivalents. For example, any feature described for one embodiment may be used in any other embodiment.