CN2178593Y - Convex ball mill - Google Patents

Abstract

The utility model relates to a ball mill. A convex partition plate and a convex tail milling screen plate are adopted in the ball mill. The utility model has the forms that on the cross section of a barrel body of the ball mill, a hollow rotary body is protruded along an axial line to a feed end (namely, protruded into the forms such as a semi-sphere shape, etc.); therefore, the material which is milled to the required fineness can be timely and effectively transferred, and the phenomenon of exorbitant milling is eliminated. In addition, compared with traditional ball mills, the sieving areas of the partition plate and the tail milling screen plate of the utility model are increased by about from 30% to 50%, and the method of sieving the material is more efficient. When the ball mill is used, the machine-hour output of the ball mill can be greatly increased, and the purposes of increasing the output and saving energy can be achieved.

Description

Convex ball mill

The utility model relates to the invention of ore grinding usefulness ball mill in the industries such as building materials, metallurgy, chemical industry.

The ball mill that adopts in the ore grinding technology is to prolong traditional ball mill of having used last 100 years at present, and partition panel in this ball mill and mill tail sheet plate are tabulars.Its mounting means is that plane, partition panel place and grinding machine axis are perpendicular, have following disadvantage when utilizing this ball mill grinding material: one after material and abrasive body are taken up by ball mill, leave again with partition panel and mill tail sheet plate be the side screening, seem too passive, this screening mode is a poor efficiency; It two feeds preceding storehouse corase grind by bistrique when material, entering the mill back just has the 20%-40% material need enter next storehouse fine grinding with the grinding machine rotation soon, but this part material is again away from partition panel, can't be discharged into next storehouse, like this, this part material that has ground still will rotate with ball mill, moves closer to partition panel, become " crossing grinding " material during this by grinding, stick to liner plate, abrasive body etc. and locate.

Also exist same phenomenon that the material that is milled to finished product is in a large number arranged for the tail storehouse, suddenly wait to draw off outside the mill, these " grinding excessively " materials, the liner plate, mill tail sheet plate comb hole etc. that stick to grinding machine inside locate to form " cushion ", reduced mill efficiency, they have also occupied the useful space in the mill, have hindered the grinding of abrasive body to unclassified stores.

Can not be in time with this part material of " crossing grinding ", by preceding storehouse move into next storehouse fine grinding and by the tail storehouse draw off mill outer be this use tabular partition panel and mill tail sheet plate the ball mill disadvantage two.

For solving above-mentioned disadvantage the various examinations of repaying were arranged once for a long time, though the Chinese invention patent communique discloses a kind of tower Theo of Milan, ITA on August 8th, 1, " micropowder grinding technology and the continuous micron mill of a kind of high yield of implementing this technology " ［ publication number CN1044419.A ］ this invention of Oran enlightening invention is compared with traditional ball mill, though done partly to improve, to the above disadvantage and unresolved of talking.

In recent years, Soviet Union expert Wa Xili. Si Dipa Milunovich. Burger Da Nuofu has developed " tube mill " ［ Chinese invention patent communique CN86108403A ］ of using the tilting partition panel but this partition panel has only when sloping portion turns to ball mill barrel the latter half and just can sieve, therefore his work is to be interrupted, periodically to sieve, and its operating efficiency is lower.

The utility model purpose is that a kind of ball mill---protruding formula ball mill that uses protruding formula partition panel and mill tail sheet plate will be provided, thereby has solved the above-mentioned disadvantage that " using traditional ball mill of plate partition panel and mill tail sheet plate " exists.

This protruding formula ball mill has been owing to used protruding formula partition panel and mill tail sheet plate can effectively take out " mistake grinding " material storehouse in, and the also more traditional ball mill of mode that he sieves material for making clothes has been done very big improvement, the direct active of change.The mode of finishing of the present utility model can be illustrated with reference to accompanying drawing in conjunction with following most preferred embodiment.

Figure (1) is protruding formula ball mill general assembly schematic diagram; Figure (2) is an A-A cutaway view among the figure (1); Figure (3) is a C-C cutaway view among the figure (1);

Figure (4) is protruding formula partition panel schematic diagram; Figure (5) is figure (a 4) convexity formula partition panel side view; Figure (6) is the schematic diagram of protruding formula mill tail sheet plate;

Figure (7) is the D-D cutaway view of figure (6) convexity formula mill tail sheet plate;

Figure (8) is a discharging awl front view;

Figure (9) is that discharging is bored E to view among the figure (8);

Figure (10) is a center ring schematic diagram among the figure (1);

Figure (11) is the B-B cutaway view of blind plate among the figure (1);

Figure (12) adopts the protruding formula ball mill schematic diagram that protrudes for the protruding formula partition panel of cone and mill tail sheet plate.

Referring to figure (1), this as seen from the figure protruding formula ball mill is made up of feed end (1), cylindrical shell (2), liner plate (3), protruding formula partition panel (7), discharging awl (5) and (17), blind plate (9), protruding formula mill tail sheet plate (12), guide leaf (8) and (14), spiral leaf (6) and (16), bolt (4) etc.He and traditional ball mill grinding material are to carry out grinding with abrasive body equally, and it does not exist together is to be equipped with successively between one, two liang of storehouse: protruding formula partition panel, discharging awl, blind plate are equipped with at tail warehouse discharging end: protruding formula mill tail sheet plate and discharging awl.Below just " protruding formula partition panel " reach " protruding formula mill tail sheet plate " reference schematic diagram separately respectively, be further described.

Referring to figure (1), as seen from the figure, protruding formula partition panel and protruding formula mill tail sheet plate is to protrude to feeding end at its axis of upper edge, ball mill barrel cross section to become a hollow rotating body, promptly protrudes into the dome-type, round platform, cone of hollow etc., is good to protrude into the semicircle ball-type.By having some combs hole on figure (4), (5) the visible protruding formula partition panels (7), hole width is 5mm to 20mm, at his two ends screw is arranged, and is used for being in the same place by bolted with center ring and cylindrical shell, making material is that wear-resisting steel casting forms, for convenient the installation made 6 to 8 usually.

As seen on protruding formula mill tail sheet plate, also have some combs hole referring to figure (6) and figure (7); hole width is 3mm to 10mm; have screw at his two ends and be used for being in the same place by bolted with center ring and cylindrical shell, middle bolt outside is with protective casing (13).

In addition referring to figure (1), discharging awl (5) and discharging awl (17) among the figure, its profile is seen figure (8) and figure (9), as seen he is a truncate hollow cone body, outer surface is welded with guide leaf (8), inside is welded with spiral leaf (6), and discharging awl small end points to the mill tail, and its hypotenuse and horizontal plane angle are 15 degree---and 45 degree are advisable.

Figure (1) convexity formula partition panel (7) and the center ring that respectively has a fritter that they are tightened together above protruding formula mill tail sheet plate (12) blind plate (9), its shape is shown in figure (10).Can have some combs hole on blind plate (9) is beneficial to ventilate.

Use this protruding formula ball mill to have following obvious advantage and effect; When this protruding formula ball mill rotates, abrasive body and material are taken to certain altitude by cylindrical shell and are left then down in the storehouse under centrifugal force and the effect of liner plate friction, abrasive body is being mingled with the quick-fried cloth specimen of thickness material and rushes down and drop on protruding formula partition panel surface in the corase grind storehouse, at this moment separated material and protruding formula partition panel are positive, directly screenings, enter the material of protruding formula partition panel, drop on the outer surface and the inside of discharging awl respectively, this two parts material is pushed next storehouse with the rotation of ball mill by guide leaf and spiral leaf.

Also have same phenomenon in the tail storehouse of this protruding formula ball mill, a thin material part that enters protruding formula mill tail sheet plate drops on the outer surface of discharging awl, and another part drops on inside, and they are released outside the mill by guide leaf and spiral leaf respectively.

The mode of as seen protruding formula ball mill screening material has very big difference with the traditional ball mill that uses plate partition panel and mill tail sheet plate, tradition ball mill screening material is comparatively passive, and the protruding formula partition panel of protruding formula ball mill and mill tail sheet plate and traditional ball mill partition panel and the sieving area of grinding the tail sheet plate are compared and increased 30%-50%.When not increasing installed capacity and do not change under the situation of abrasive body useful load, can increase substantially the ball mill unit-hour output, thereby reach energy-saving and cost-reducing this purpose like this.

This in addition protruding formula partition panel and protruding formula mill tail sheet plate are to protrude to the ball mill feeding end to become a hollow rotating body, promptly put in a segment distance in the storehouse, so just can be milled to fines (or finished product) to that part in former traditional ball mill but have the material of a segment distance in time to move into next storehouse fine grinding (or drawing off outside the mill) from plate partition panel (or mill tail sheet plate), effectively eliminated " crossing grinding " phenomenon, eliminate the cushion that " crossing grinding " material forms, improved the efficient of ball mill.

The utility model not only can new mechanism be made also practicable retrofitting of used machine, and has the advantages such as small investment instant effect in transformation.

Claims (7)

1, a kind of protruding formula ball mill is made up of grinding mill barrel, feed end, liner plate, partition panel, abrasive body etc., it is characterized in that being equipped with successively between one, two liang of storehouse: protruding formula partition panel, discharging awl, blind plate, be equipped with at tail warehouse discharging end: protruding formula mill tail sheet plate and discharging awl.

2, protruding according to claim 1 formula ball mill is characterized in that protruding formula partition panel and protruding formula mill tail sheet plate is that it axially becomes hollow rotating body to the feeding end protrusion in upper edge, ball mill barrel cross section, promptly protrudes into hollow dome-type, round platform, cone.

3, protruding as claimed in claim 1 or 2 formula ball mill is characterized in that having some combs hole above the protruding formula partition panel, and hole width is 5mm to 20mm.

4, protruding as claimed in claim 1 or 2 formula ball mill is characterized in that having some combs hole on the protruding formula mill tail sheet plate, and hole width is about 3mm to 10mm.

5, protruding according to claim 1 formula ball mill is characterized in that the discharging awl outer surface of protruding formula partition panel inside is welded with the guide leaf, and inside is welded with spiral leaf discharging awl small end and points to the mill tail.

6, as protruding formula ball mill as described in claim 1 or 5, to be 15 degree spend to 45 for the hypotenuse that it is characterized in that the discharging awl and horizontal plane angle.

7, protruding as claimed in claim 1 or 2 formula ball mill is characterized in that protruding formula partition panel, protruding formula are ground the tail sheet plate and blind plate should make 6---8.

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