CN87210174U - New type comminution lapper - Google Patents

Abstract

The utility model discloses a novel grinding mill, which is suitable for various solid materials. The utility model is composed of a cylinder body, a transmission mechanism, a supporting mechanism, a lining board, a grinding body, and a partition board. The grinding mill is characterized in that the provided partition board is sloping, namely, the normal line of the plane where the partition board is positioned is not parallel to the shaft line of the grinding mill, and the normal line and the shaft line are formed an angle of 3-75 DEG. The special structure of the partition board is that the portion is provided with openings, and the other portion is provided with stop plates. The utility model has good effects that the speed of flow of the material is accelerated, the milling efficiency is increased, the yield is improved, and the consumption is reduced. The peripheral system of the grinding mill is saved, the yield is improved by 10-50%, and the availability ratio of the energy is improved by more than two times.

Description

New type comminution lapper

A kind of novel flour mill is similar to the ball mill of present use, is to be made of the cylindrical shell that is bearing on the bearing, and sphere or cylindricality abrasive body are housed in the cylindrical shell, and it is driven by motor via reducer.This flour mill is applicable to the various solid materials of grinding, as various ores, and clinker etc., and can not only dry grind, also can carry out wet-milling.

At present, being used for the ball mill of the various materials of grinding, can being divided into single storehouse mill and compound mill by its structure difference, is the compound mill of usefulness under a lot of situations, and compound mill generally is divided into 2～4 storehouses.The inner barrel of these compound mills is equipped with one or more partition panels perpendicular to tubular axis, grinding machine inside is divided into a plurality of storehouses, different by grinding requirement, be filled with different abrasive bodies in the different storehouses, this partition panel generally has hole or slotted hole, after material grinds through the pulverizing in each storehouse from the bistrique feeding, promptly produce desired powder material.But, the abrasive body in the mill leaves because mainly rotating it is taken up by grinding mill barrel (in liner plate is arranged), abrasive action by this leave to impact and fall the back roll and finish, in fact this impact and rolling much are abrasive body impact and frictions each other itself, fail to be used for to grind, impact material, lot of energy all is converted into hot harmony.According to measurement, present ball mill, capacity usage ratio only are 2～4%, and other energy all is converted into the energy of other form and has wasted, and another reason that causes this situation is that the material movement situation in the grinding machine is bad, and it is serious that material is crossed crushing phenomenon; Also have abrasive body movement locus dullness in the mill, drop point is too concentrated etc.In order to improve this situation, improve the capacity usage ratio of grinding machine, method commonly used at present is mill inner ventilation and employing closed circuit circulatory system, and this makes complicated operation again, and effect is not fine yet.Adopt simpler method to change the moving situation of material in the mill, change abrasive body and leave track, so that grinding material more effectively is a purpose of the present invention.

The present invention has designed a kind of novel flour mill, this grinding machine is a multi-chamber, by cylindrical shell, supporting part, feeder, discharger, running part constitute, and liner plate is arranged in the cylindrical shell, members such as partition panel, be that with the difference of present ball mill the partition panel that is adopted tilts, promptly the partition panel plane is different with ball mill partition panel in the past, be not orthogonal to tubular axis and tubular axis oblique; And this oblique partition panel has part to have the comb hole, and another part does not have perforate.For sake of convenience, we partly claim " blind plate " not perforate, and perforate partly claims " orifice plate ".If grinding mill barrel is a garden shape cylinder, so, for adapting to the requirement of grinding machine itself, it is oval that designed partition panel generally should be, and is embedded in the holddown groove in week in the cylindrical shell, and this holddown groove can be by being bolted on the cylinder inboard wall.

We are decided to be " α " to the angle of partition panel plane normal and grinding mill barrel axis, and grinding machine supplied materials direction is a positive direction, and " α " angle is the acute angle greater than zero so, and the scope at general " α " angle is 3 °～75 °, and " α " is bigger, and partition panel tilts more serious.The part of partition panel nearly 1/2～4/5 has the comb hole, and this part is " orifice plate ", and all the other are " blind plate ", trend and gradient that the part of perforate is always determined its position of opening, perforate according to the direction of rotation and the material flow of grinding machine.Its operation principle is: when grinding mill barrel during with the widely different commentaries on classics of " ω " angular speed, material runs into circulation " blind plate " and " orifice plate ", material and abrasive body are at Qian Cang (before the partition panel, with the supplied materials direction is preceding) the lining partition panel that will be tilted repeatedly " sweeps " or ladled out and thrown and go up at various height, material that these " are swept " and abrasive body will circulate when falling and run into " orifice plate " and " blind plate ", and we need qualified material to enter next storehouse or go out mill by partition panel to run into " orifice plate ".

Therefore, we are arranged at the position of " orifice plate " when partition panel and change into below when receding.Like this, the material that is crushed to certain particle size (by determining in partition panel comb hole) is then through should " orifice plate " sieve stream and enter down the storehouse or subordinate or go out to grind, and intransitable material and abrasive body then obtain an impact forward.Strengthened the abrasive action in preceding storehouse; Grinding machine continues rotation, and partition panel can go to by receding and turn forward, and the bottom is " blind plate "; Material that back storehouse falls and abrasive body are hindered, and can not return preceding storehouse, make these materials and abrasive body obtain an impulse force backward simultaneously, have strengthened the abrasive action in back storehouse.As can be seen, preceding storehouse is owing to constantly running into " orifice plate " and by screen analysis, simultaneously the height that " swept " of abrasive body different obtain when falling partition panel before push away and strengthened grinding, reduced and crossed the grinding phenomenon, back storehouse has been because material pace and abrasive action have been accelerated in the propelling of " blind plate ", thereby whole grinding machine grainding capacity is strengthened.Efficient improves, because the inclination of partition panel has destroyed the garden cylindrical space of original abrasive body motion, height that abrasive body is thrown and left and drop point difference are bigger, have also improved grinding efficiency effectively.

Here designed partition panel, the general angle that tilts " α " is a solid angle.Like this partition panel in grinding machine to the effect of abrasive body and material as an impeller, material movement is speeded up, abrasive action is strengthened, output improves; Test factually, adopt the grinding machine of this oblique partition panel can improve output 10～50%, efficient can improve one times nearly.

Novel flour mill of the present invention is conspicuous to the rigidity and the requirement of strength of its tilting partition panel, and partition panel is subjected to the impact more much bigger than common partition panel, therefore, and can be with increasing partition panel thickness, using high-intensity material instead and reach application target.

Fig. 1 is the general structure schematic diagram of novel grinding machine of the present invention, and tiltedly partition panel is installed on certain position of inner barrel, and cylindrical shell is divided into several storehouses, and this partition panel also can be installed on the discharging end of cylindrical shell, plays to strengthen and grinds, and improves the purpose of output.1. being blanking device among the figure, 2. is block bearing, 3. is drawing mechanism.4. being cylindrical shell, 5. is liner plate, 6. is partition panel, 7. is transmission device.Abrasive body is housed in the cylindrical shell, and this figure also can be equipped with two partition panels as embodiments of the invention in the flour mill, and inside is divided into three storehouses, and the specification of this grinding machine is changeable.Draw ratio can be same or similar with employed general milling machine in the present production.

Fig. 2: be the geometric graph of partition panel incline direction, " α " is the normal on partition panel plane and the three-dimensional angle of grinding mill barrel axis among the figure, and directions X is a material supplied materials direction, N ₁Be vertical, N ₂Be plane, partition panel place, N ₃Be the normal on partition panel plane and the plane of X-axis formation, n is N ₂The normal on plane." α " is to be positioned at N from how much ₃Plane angle in the plane.But because this plane and vertical guide N ₃Constitute the angle β of variable (with the grinding machine rotation), therefore, we call solid angle to it, and table note of the ancient Chinese partition panel another angle in the locus is when the partition panel major axis is positioned at vertical guide, plane N ₂With angle " γ " angle of directions X on horizontal plane general＜90 °.

Fig. 3 is the plane of designed partition panel, a part of perforate among the figure, and not perforate of another part, perforate can be split into slotted hole, radiation hole or hole, garden, percent opening are 10-50%(orifice plate part).

Annotate: carry in the specification " preceding ", " back " determines that with grinding machine input and output material end the definition feed end is the place ahead, and discharge end is the rear.

Claims (2)

1, a kind of novel flour mill, be applicable to the grinding of multiple solid material, by blanking device 1., block bearing 2., drawing mechanism is 3., cylindrical shell 4., liner plate 5., partition panel 6., 7. transmission device constitutes, this novel grinding machine is characterised in that used partition panel is a tilting, and promptly partition panel plane and tubular axis are obliques; The normal on partition panel plane and tubular axis have the angle greater than zero in other words, and this angle generally is an acute angle.Described partition panel is the part perforate, generally be when grinding machine rotate to partition panel when receding its perforate partly be positioned at the bottom; Not perforate of remainder.

2, flour mill according to claim 1 is characterized in that the percent opening of the perforate part of partition panel is 10～50%, and perforate partly accounts for 1/2～4/5 of whole partition panel area.The angle " α "=3～75 that tilts °.

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