CN201141404Y - Rolling bearing for ball grinder saving energy - Google Patents

Abstract

The utility model discloses a rolling bearing used for the energy conservation of a ball mill. The size of the spherical surface of the outer ring of the rolling bearing identical with the size of the inner spherical surface of the base seat of the main bearing of the ball mill, and the two spherical surfaces are mutually coordinated. The rolling bearing is respectively arranged on the neck journal of the hollow shaft at the two ends of the ball mill through a split transitional sleeve, retaining rings and bolts. The retaining rings are positioned at the two ends of the rolling bearing, and are fastened on the split transitional sleeve through bolts after debugging, in order to prevent the axial displacement of the rolling bearing The sliding bearing of the ball mill is changed into the rolling bearing not only the bearing capacity is strong and the service life is long, but also the starting resistance and the running resistance are declined. The starting current is reduced by almost 40 percent, and the running current is reduced by 10-20 percent. After being modified and put into production for 6-8 months, the saved electric power charges can recoup the total investment on technical upgrading, and thereby the rolling bearing is especially suitable to the reconstruction of the prior ball mill.

Description

The rolling bearing of the energy-conservation usefulness of pebble mill

Technical field

The utility model relates to the rolling bearing of the energy-conservation usefulness of a kind of pebble mill, belongs to mechanical field.

Background technique

The most sliding bearings (Babbitt spherical bush) that adopt of existing pebble mill, friction factor is big, and the resistance of start and running resistance are all big.Sliding bearing adopts water cooling, and water usage is big.

Summary of the invention

The purpose of this utility model provides the rolling bearing of the energy-conservation usefulness of a kind of pebble mill, and its friction factor is 0.002, and the resistance of start and running resistance are all little.It is simple in structure, easy construction, and little investment is specially adapted to have now the transformation of pebble mill.

The purpose of this utility model is achieved in that by split type spacer shell (the split type spacer shell is stuck on the pebble mill neck of hollow shaft) and respectively rolling bearing (it is made up of parts such as outer ring, inner ring, rollers), back-up ring and bolt is contained on the neck of hollow shaft of pebble mill two ends.Back-up ring is positioned at the rolling bearing two ends, and the debugging back on the split type spacer shell, prevents the axial displacement of rolling bearing with bolton.

Housing washer is sphere and main bearing of ball grinding mill base inner ball surface consistent size, cooperatively interacts, and can transpose automatically, swing, and can improve two ends quill shaft force-bearing situation, and be easy to reset, and adjusts a little and just can.Whole transformation process Central Plains pebble mill component can not be changed, and Installation and Debugging work was finished in 2-3 days.

The utility model changes the pebble mill sliding bearing into rolling bearing, and not only bearing capacity is big, long service life, and also the resistance of start and running resistance all descend.It is about 40% that inrush current descends, revolution electric current decline 10-20%.Operation 6-8 is individual month after the pebble mill transformation, and the electricity charge of saving are with regard to recoverable whole investments in technological upgrading.

Below in conjunction with accompanying drawing the utility model is further specified.

Description of drawings

Accompanying drawing is the rolling bearing half section tectonic maps of the energy-conservation usefulness of embodiment-φ 2.6 * 13m pebble mill discharge end of the present utility model.

Embodiment

1-pebble mill quill shaft in the accompanying drawing illustrated embodiment, 2-rolling bearing (it is made up of parts such as outer ring, inner ring, rollers), 3-split type spacer shell, 4-bolt, 5-back-up ring.

The grinding body and the material of the pebble mill inside that will transform are unloaded out, the pebble mill of jack-uping, lumps of wood fulcrum ball grinding mill barrel, take former supporting sliding bearing (Babbitt spherical bush) away, component such as rotating wash bowl mill trunnion 1 and main bearing of ball grinding mill base, split type spacer shell 3 is stuck on the neck of hollow shaft of pebble mill two ends, and again with rolling bearing 2, bolt 4 and back-up ring 5 are contained on the split type spacer shell.Housing washer is a sphere, is placed on the main bearing of ball grinding mill base inner ball surface, because of consistent size, can cooperatively interact, and adjusts a little and just can.

The pebble mill discharge end is a fixed end, and feed end is a free end.The rolling bearing inner ring two ends of free end dress do not have protruding closing, and roller can move axially relatively on the inner ring outer surface, can solve the requirement that ball mill barrel expands with heat and contract with cold like this.

After treating the debugging of pebble mill each side, the back-up ring that is positioned at the rolling bearing two ends uses bolton on the split type spacer shell, prevents the axial displacement of rolling bearing.

Claims (1)

1, the rolling bearing of the energy-conservation usefulness of a kind of pebble mill, comprise the pebble mill quill shaft, it is characterized in that rolling bearing is contained in respectively on the neck of hollow shaft of pebble mill two ends by the split type spacer shell, back-up ring is positioned at the rolling bearing two ends, uses bolton on the split type spacer shell.

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