Processing

Please wait...

Settings

Settings

Goto Application

1. WO2009006022 - TIRE FOR MATERIAL TREATMENT SYSTEM

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]
CLAIMS
What is claimed is:
1. A tire for a roll wheel assembly used to crush material in a pulverizer, the tire comprising a generally toroidal body having:
a) a crushing surface on an outer periphery of the body, the crushing surface being configured and adapted to contact and crash the material within the pulverizer; and b) at least one beveled surface defined on an inner periphery of the body, the at least one beveled surface being configured and adapted to engage a wedge disposed on a roller wheel of the roll wheel assembly to hold the tire on the roller wheel.

2. A tire as recited in. claim 1 , wherein first and second beveled surfaces on the inner periphery of the body are configured and adapted to cooperate with a plurality of wedges disposed on the roller wheel to hold the tire on the roller wheel.

3. A tire as recited in claim 2, wherein the body has a cross-section symmetrical about a centerline perpendicular to an axis of revolution of the body.

4. A tire as recited in claim 1 , wherein the body has a cross-section that is asymmetrical about a centerline perpendicular to an axis of revolution of the body.

5. A tire as recited in claim 1 , wherein the tire includes a material selected from the list consisting of cast iron, cast white iron, and abrasion resistant weld overlay materials.

6. A roll wheel assembly for crushing material in a pulverizer, the roll wheel assembly comprising:
a) a roller wheel;
b) at least one wedge defining at least one wedging surface defined thereon; and
c) a tire including a generally toroidal body having a crushing surface on an outer periphery thereof configured and adapted to contact and crush the material within the pulverizer, and at least one beveled surface defined on an inner periphery of the body, the tire being engaged with the roller wheel by the wedge proximate the at least one beveled surface.

7. A roll wheel assembly as recited in claim 6, wherein a first beveled surface of the tire is engaged with a first frustoconical surface on the wedge, and wherein the roller wheel has a second frustoconical surface defined on its outer circumferential periphery, the second frustoconical surface being engaged with a second beveled surface of the tire.

8. A roll wheel assembly as recited in claim 7, further comprising at least one adjustable fastener joining the wedge to the roller wheel, wherein the first and second frustoconical surfaces may be urged toward each other by tightening the fastener.

9. A roll wheel assembly as recited in claim 6, wherein a first beveled surface of the tire is engaged with a first wedging surface on a first wedge, and wherein a second beveled surface of the tire is engaged with a second wedging surface on a second wedge.

10. A roll wheel assembly as recited in claim 9, further comprising at least one adjustable fastener joining the first wedge to the second wedge, wherein the at least one adjustable fastener is configured and adapted to urge the first and second wedges toward each other when tightened.

11. A roll wheel assembly as recited in claim 6, further comprising a wear protection plate disposed on an exposed portion of the at least one wedge, the wear protection plate being configured and adapted to substantially isolate the respective wedge from material being crushed in the pulverizer.

12. A vertical roller table mill for crushing material, the vertical roller table mill comprising:
a) a pulverizer housing;
b) a grinding ring disposed within the pulverizer housing;
c) a plurality of roll wheel assemblies disposed within the pulverizer housing, each roll wheel assembly including:
i) a roller wheel,
ii) at least one wedge engaged to the roller wheel and having a wedging surface on an outer periphery thereof, and
iii) a tire including a generally toroidal body having a crushing surface on an outer periphery thereof configured and adapted to contact and crush the material within the roller-table mill, and at least one beveled surface defined on an inner periphery of the body, the at least one beveled surface being engaged with the wedging surface of the at least one wedge to lock the tire to the wheel; and
d) a loading assembly operatively connected to the plurality of roller wheel assemblies, the spring loading assembly being configured and adapted to urge the plurality of wheel assemblies toward the grinding ring to crush the material between the grinding ring and the crushing surface of the tires as the tires roll along the grinding ring.

13. A vertical roller table mill as recited in claim 12, wherein a first beveled surface of the tire is engaged with a first frustoconical surface on a wedge, and wherein the roller wheel has a second frustoconical surface defined on its outer circumferential periphery, the second rrustoconical surface being engaged with a second beveled surface of the tire.

14. A vertical roller table mill as recited in claim 13, further comprising at least one adjustable fastener joining the wedge to the roller wheel, wherein the at least one adjustable fastener urges the first and second frustoconical surfaces toward each other when tightened.

15. A vertical roller table mill as recited in claim 12, wherein a first beveled surface of the tire is engaged with a first frustoconical surface on a first wedge, and wherein a second beveled surface of the tire is engaged with a second frustocomcal surface on a second wedge.

16. A vertical roller table mill as recited in claim 15, further comprising at least one adjustable fastener joining the first wedge to the second wedge, wherein the at least one adjustable fastener is urges the first and second wedges toward each other when tightened.

17. A vertical roller table mill as recited in claim 12, further comprising a wear protection plate disposed on an exposed portion of the at least one wedge, the wear protection plate being configured and adapted to substantially isolate the respective wedge from material being crushed in the pulverizer.

18. A method of securing a tire to a roller wheel assembly in a pulverizer for crushing material, the method comprising:
a) providing a roller wheel;
b) providing at least one wedge defining a wedging surface thereon;
c) providing a tire including a generally toroidal body having a crushing surface on an outer periphery thereof being configured and adapted to contact and crush the material within the pulverizer, and at least one beveled surface defined on an inner periphery of the body, the tire being configured and adapted to engage the roller wheel by the wedge proximate the at least one beveled surface; and
d) affixing the tire to the roller wheel using the wedge.

19. A method as recited in claim 18, wherein the affixing step includes:
a) disposing a fastener through the wedge; and b) tightening the fastener to urge the wedge against the beveled surface of the tire.

20. A method as recited in claim 19, further comprising:
a) affixing at least one wear protection plate to an exposed surface of the at least one wedge.