CN201316653Y

CN201316653Y - Dustless, energy-saving cement ball mill with crossed cambered surface open type hydrostatic bearing

Info

Publication number: CN201316653Y
Application number: CNU2008201996132U
Authority: CN
Inventors: 朱鑫祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-16
Filing date: 2008-12-16
Publication date: 2009-09-30
Anticipated expiration: 2018-12-16

Abstract

The utility model discloses a dustless, energy-saving cement ball mill with a crossed cambered surface open type hydrostatic bearing, which comprises an oil supply system, an electric control system, a cylinder (12), hollow shafts (8) and the bearings (3); wherein, the hollow shafts are fixed on both ends of the cylinder; the upper end of each bearing is provided with the longitudinal concave cambered surface (6) which is matched with the hollow shaft; the lower end of the bearing is provided with the transverse convex cambered surface (9) which is vertically crossed with the concave cambered surface; a cambered notch which is matched with the convex cambered surface is arranged on a base; and oil sinks which are communicated with the oil supply system are arranged in the concave cambered surface and the cambered notch. Because the utility model can ensure the effective application of hydrostatic characteristics, friction drag and driving moment are greatly reduced, the power consumed by an electric motor is reduced by over 20 percent, and the service life of the ball mill is prolonged. The working efficiency of the ball mill is increased, and the operation cost of the ball mill is reduced. Moreover, ''static sealing'' is adopted at all the joints of the cylinder, dynamic sealing units are adopted at the rotating places, so that no dust leaks out, consequently, not only the working efficiency of the ball mill is increased, but also the operation cost is reduced, and the purposes of dustlessness and environment protection are achieved.

Description

The dustless energy saving cement ball mill of intersection cambered surface open type hydrostatic bearing

Technical field

The utility model relates to ball mill, especially relates to being equipped with intersecting cambered surface open type hydrostatic bearing and having dustproof and energy-conservation cement ball mill.

Background technology

In existing ball mill, because the influence of long cylindrical shell deadweight, add the shock loading that the abrasive body cast and decline movement is produced in the upper shell, make cylindrical shell and hollow shaft bigger deflection deformation occur, and the size of this deflection deformation constantly changes along with the variation of abrasive body shock loading.The base bearing of tradition ball mill mostly adopts the hydrodynamic lubrication form, and the oil film between the rubbing surface is meagre.Therefore, when ball mill is in operation, though traditional structure base bearing lower bearing has adopted the sphere form, but be difficult to form oil film herein, base bearing can not be delicately changes with the change of deflection deformation, must cause axle journal to contact with the strong of bearing shell localized metallic, bigger frictional resistance occurs, so that increased the driving power of motor, the service life of having reduced ball mill.On large-size ball mill, used the ball mill of dynamic and static pressure form in recent years both at home and abroad, though moment and frictional resistance when having reduced starting, but can not solve the deflection deformation problem that long-time running adapts to ball mill barrel, in addition according to the interrelated data introduction, external existing a kind ofly be applied to " the static pressure ball bearing " of heavy duty machine tools though reach the requirement of warp resistance distortion, because of complex structure, the machining accuracy height, the long-pending reason such as huge of ectosphere pedestal also fails to be applied to ball mill.

The utility model content

Problem at ball mill existence in the above-mentioned prior art, it is a kind of simple in structure, easy to process that the utility model provides, bearing capacity is big, little, the long service life of driving load, has energy-conservation and the dustless energy saving cement ball mill of intersection cambered surface open type hydrostatic bearing environmental protection.

The technical scheme that the technical problems to be solved in the utility model is taked is: it comprises oil supply system, electrical apparatus control system, driven wheel, cylindrical shell, hollow shaft, dust cover, base, bearing block and bearing, described hollow shaft is fixed on the cylindrical shell two ends, on the bearing block firm banking, the bearing block two ends are provided with boss, bearing is bearing on the bearing block, be provided with the adjustment piece between the boss at bearing and bearing block two ends, described bearing block vertically is screwed on base, base is provided with dust cover, it is characterized in that; Described bearing upper end is provided with the vertically interior concaved circular cambered surface that matches with hollow shaft, interior concaved circular cambered surface is provided with finishing bathtray, described bearing lower end is provided with the horizontal outer convex arc surface with interior concaved circular cambered surface square crossing, described base is provided with the arch groove that matches with outer convex arc surface, be provided with down oil groove in the arch groove, described finishing bathtray and following oil groove all communicate with oil supply system through choke valve separately.

The utility model shock loading that the abrasive body cast and decline movement is produced in ball mill barrel, when making the bigger deflection deformation up and down of the instantaneous appearance of cylindrical shell, this shock loading, make the deflection deformation degree of above-below direction bigger, and the deformation of left and right directions is very little, and therefore, left and right directions only relies on hydrostatic bearing gap rigidity oil film to eliminate, the intersection cambered surface of the open type hydrostatic bearing described in the utility model can be made minor rotation with deflection about the cylindrical shell.Thereby can make the hollow shaft at ball mill barrel two ends and pressure oil that the open type hydrostatic bearing is suspended in hydrostatic bearing and bearing block all the time respectively intermembranous, any Metal Contact does not appear, and the deflection with grinding mill barrel changes angle to hydrostatic bearing at bearing block cambered surface place, significantly reduce frictional resistance and driving moment purpose thereby reach, reduce electrical consumption power more than 20%, prolonged the service life of ball mill, and in each interface employing " static seal " of cylindrical shell, revolution place adopts dynamic sealing device to guarantee, non-flour dust overflow, both improve the operating efficiency of ball mill, reduced ball mill operating cost, reached dustless environmental protection purpose again.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model,

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1,

Fig. 3 is vertical sectional structure schematic diagram of the another kind of bearing of the utility model.

In the drawings, 1, down oil groove 2, adjust piece 3, bearing 4, oilhole 5, finishing bathtray 6, interior concaved circular cambered surface 7, dust cover 8, hollow shaft 9, outer convex arc surface 10, bearing block 11, base 12, cylindrical shell 13, driven wheel

The specific embodiment

Embodiment 1, in Fig. 1 and Fig. 2, the dustless energy saving cement ball mill of described intersection cambered surface open type hydrostatic bearing is supported and fixed on the cemented platform by base 11, it comprises oil supply system, transmission system, electrical apparatus control system, cylindrical shell 12, hollow shaft 8, the driven wheel 13 that links to each other with transmission system, dust cover 7, base 11, bearing block 10 and bearing 3, described hollow shaft 8 is fixed on cylindrical shell 12 two ends, driven wheel 13 is housed on the cylindrical shell, on bearing block 10 firm bankings 11, the bearing block two ends are provided with boss, bearing 3 is arranged on the bearing block, be provided with between the boss at bearing and bearing block two ends and adjust piece 2, described bearing block vertically is fixed on the base by boss with screw, by adjusting the lengthwise position of piece adjustable bearings on bearing block, hollow shaft 8 is bearing on the bearing, base is provided with the dust cover 7 that can seal bearing and hollow shaft, bearing upper end in the present embodiment is the open type of bearing shell shape (being half-edge hole), described bearing upper end is provided with the vertically interior concaved circular cambered surface 6 that matches with hollow shaft, described bearing lower end is provided with the horizontal outer convex arc surface 9 with the concaved circular cambered surface square crossing, described base is provided with the arch groove that matches with convex arc surface, interior concaved circular cambered surface is provided with finishing bathtray 5, be provided with down oil groove 1 in the arch groove, described finishing bathtray all links to each other with oil supply system through each choke valve with following oil groove, also be provided with cooling water channel on the described hydrostatic bearing, to reduce the heat that hollow shaft was brought, when oil supply system during to each oilhole 4 fuel feeding, concaved circular cambered surface and hollow shaft contact position at hydrostatic bearing, all be full of pressure oil in the convex arc surface of hydrostatic bearing and the contact position of bearing block both sides and inner concave arc surface, make the contact position can form the pressure oil film, thereby become the solid contact and be the neat liquid contact, the thickness of oil film is greater than the geometry unevenness of two contact-making surfaces, the pivoting friction resistance of hollow shaft and hydrostatic bearing are supported by lubricating oil film fully because of the frictional resistance of the minor rotation that the cylindrical shell deflection is done, thereby can eliminate because the friction phenomenon that cylindrical shell deflection deformation and hollow shaft journal surface are in contact with one another.

Embodiment 2, in Fig. 3, present embodiment 2 described hydrostatic bearing upper ends are closed (the different hole of radius promptly) of circular hole shape, except that its hydrostatic bearing is closed go up on the bearing block among end structure and two embodiment different with embodiment 1 described hydrostatic bearing structure the lower camber side height differ different, present embodiment 2 other structures of described hydrostatic bearing are identical with embodiment 1.The end structure difference is on present embodiment 2 described hydrostatic bearing upper ends and the embodiment: the hydrostatic bearing upper end in the present embodiment 2 is provided with a top that can be inclusive in the dust cover, this top and hydrostatic bearing form an integral body, in its top, be provided with one relative with interior concaved circular cambered surface position, but its radius of curvature is greater than vertical cavity of hollow shaft radius.

The utility model is except that above-mentioned two kinds of bearing arrangement types, and the bearing arrangement in other and the utility model similarly other bearing also should belong to the claimed scope of the utility model.

Claims

1, the dustless energy saving cement ball mill of intersection cambered surface open type hydrostatic bearing, it comprises oil supply system, electrical apparatus control system, driven wheel (13), cylindrical shell (12), hollow shaft (8), dust cover (7), base (11), bearing block (10) and bearing (3), described hollow shaft is fixed on the cylindrical shell two ends, on the bearing block firm banking, the bearing block two ends are provided with boss, bearing is bearing on the bearing block, be provided with between the boss at bearing and bearing block two ends and adjust piece (2), described bearing block vertically is screwed on base, base is provided with dust cover, it is characterized in that; Described bearing upper end is provided with the vertically interior concaved circular cambered surface (6) that matches with hollow shaft, interior concaved circular cambered surface is provided with finishing bathtray (5), described bearing lower end is provided with the horizontal outer convex arc surface (9) with interior concaved circular cambered surface square crossing, described base is provided with the arch groove that matches with outer convex arc surface, be provided with down oil groove (1) in the arch groove, described finishing bathtray and following oil groove all communicate with oil supply system through choke valve separately.

2, the dustless energy saving cement ball mill of intersection cambered surface open type hydrostatic bearing according to claim 1 is characterized in that: described bearing (3) upper end is closed for the open type of bearing shell shape or circular hole shape.