CN203556414U - Inertia ball mill - Google Patents

Abstract

The utility model discloses an inertia ball mill which is mainly used for crushing and grinding operations of block or granular minerals. The inertia ball mill disclosed by the utility model mainly comprises a barrel, a grating plate, a classifying device and a motor system consisting of a plurality of vibrating bodies, a middle ring, a flexible shaft and the like in the barrel, wherein the system is driven by a driving device to perform high speed rotary swinging motion so as to crush and grind the materials. The inertia ball mill disclosed by the utility model is capable of greatly increasing the mill efficiency and reducing the energy consumption and is small in equipment volume, light in weight, simple in structure and easy in maintenance.

Description

Inertia ball grinding machine

Technical field

The utility model relates to a kind of inertia ball grinding machine, and it is the bulk of different hardness or the fine grain equipment of fibrous mineral grinding poling, is widely used in the industrial circles such as ore dressing, metallurgy, building materials, chemical industry, generating.

Background technology

In various grinding operations, ball mill is to apply to obtain the most a kind of equipment, and this is because ball mill has the following advantages: (1) strong adaptability to material, can continuous operation, production capacity is large, can meet large-scale production requirement; (2) comminution ratio is large, can reach more than 300, and product fineness is easily adjusted; (3) can adapt to dry, wet trade, also grinding and dry two kinds of operations can be carried out simultaneously; (4) simple in structure, firm, running is reliable, maintenance management is easy.

This ball mill as shown in Figure 1, it is that cylindrical shell 4, two are assembled into one with the end cap 3 of hollow shaft, and supporting is positioned on the bearing 2 at two ends, and cylinder inboard wall is equipped with liner plate, inner barrel is equipped with abrasive body, and abrasive body is generally steel ball, steel section, rod iron or gravel etc.Material is added by charging gear 1.Its operation principle is: transmission device 8 drives whole cylindrical shell rotation by pinion 7 and the gear wheel 5 that is contained in cylindrical shell end, due to the effect of centrifugal force, abrasive body is attached on cylinder lining plate to be rotated together with cylindrical shell, when being brought to after certain altitude, because being impelling shape, gravity falls, reach and impact and broken material, the slip of abrasive body and rolling are carried out further levigate to material, so go round and begin again, and complete grinding operation.On marker method, wet mill still have overflow discharge and grid discharge not, dry grinding mill is external wind power system discharge.

The major defect of this ball mill is: (1) operating efficiency is very low, conventionally capacity utilization is less than 50%, working speed only has 15-30r/min, and do not allow to improve again, electric energy effective rate of utilization only has 4% left and right, all the other major parts all become heat waste to be fallen, and grinding operation power consumption is about total power consumption 2/3; (2) while working, noise is large; (3) the huge heaviness of body, more than large person's kiloton.

What the second use was more is autogenous tumbling mill, as shown in Figure 2, its structure mainly contains cylindrical shell 4, its inwall is equipped with riser 9, there is clapboard (10) end, gear wheel 5 is equipped with in cylindrical shell end, bearing 2 is bearing in the hollow shaft of two end cap 3, in cylindrical shell, do not install or fill less abrasive body additional, its operation principle is: material adds from feeding mouth 1, tumbler drives barrel body rotation by gear wheel 5, utilize riser 9 that mineral different granularity are risen to after certain altitude, because Action of Gravity Field falls, by the mutual shock between ore and friction, realize fragmentation and grinding, levigate material is discharged from discharging opening 6 by wind-force, these equipment pan feeding mineral can without coarse crushing and in broken directly into mill, be generally used for corase grind, be suitable for brittle material grinding, remaining pluses and minuses is identical with the first ball mill.Although omitted, install abrasive body additional, in order to improve the impulsive force of ore, often make its barrel diameter also more much bigger than ball mill.

What the third generally used is vibrating mill, as shown in Figure 3, cylindrical shell 4 is arranged on the pedestal that spring 12 and base 13 form, two eccentric blocks are housed on eccentric shaft 11, eccentric shaft 11 is connected with motor by flexible coupling, in cylindrical shell, pack abrasive body and material into, abrasive body can be steel ball, steel section and rod iron, its operation principle is: when motor drives eccentric shaft High Rotation Speed, the exciting force that eccentric mass produces makes cylindrical shell 4 produce high frequency to vibrate by a narrow margin, in cylinder, abrasive body produces integral-rotation and monomer rotation, material is produced and impacts and grind, complete grinding operation, owing to being that high frequency vibrates by a narrow margin, material is to produce fatigue crack and fragmentation under the little impact force action of high frequency.Although the lightweight effect frequency of this kind equipment is high, amplitude is little, and active force is little, and material size scope is little, yields poorly, and is difficult to meet maximization needs.

Summary of the invention

In order to solve the existing variety of issue of the milling equipments such as existing ball mill, the utility model is with the operation principle of high speed kinetic energy comminution material, replace the operation principle of traditional ball mill low speed potential energy comminution material, in the mode that directly material is applied to crushing energy, replace traditional ball mill and indirectly apply the mode of crushing energy, designed a kind of novel inertia ball grinding machine, as shown in Figure 4, its technical scheme is mainly by cylindrical shell 4, vibrating body 17, adapter ring 18, transmission device 8, flexible axle I15, flexible axle II21, diagrid plate 16, grading plant 23, damping spring 12, base 13 compositions such as part such as grade, cylindrical shell 4 is arranged on the elastic base that damping spring 12 and base 13 form, cylindrical shell maintains static, in it, be provided with 17 and 1 adapter ring 18 of 2 vibrating bodies, center position at each vibrating body 17 forms flexible connection by 3 drag-lines 25 that are mutually 120 ° with cylindrical shell 4, adapter ring 18 is placed between two vibrating bodies 17, and become flexible and are connected with two vibrating body abutting ends maintenance teeth groove, flexible axle II21 is connected with the main shaft 31 of two vibrating body 17 phase near-ends respectively, flexible axle I15 couples together the transmission device outside the main shaft of left side vibrating body 31 and cylindrical shell 8 respectively, so, two vibrating bodies 17, adapter ring 18, flexible axle I15, flexible axle II21 and transmission device 8 form the both-end swing kinematic system of a series connection, in this system, the main shaft 31 of each vibrating body, the eccentric block 30 being fixed thereon, flexible axle I15, the flexible axle II21 rotation that is connected, each vibrating body 17 is all done the two ends swing campaign without rotation around himself center, 18 of adapter rings are made the circular motion without rotation under two vibrating bodies drive, cylindrical shell 4 structures as shown in Figure 4, cylindrical shell 4 inwalls are fixed with abrasion-proof backing block, at each vibrating body 17 center positions of correspondence, respectively there are 3 to be mutually peep-hole and the inspection hole cover 19 of 120 °, cylindrical shell both ends are furnished with end cap 3, wherein the end cap 3 of feed end has charging aperture 1 and inlet opening 20, approaches discharge end and be provided with the adjustable diagrid plate 16 of gap size in cylindrical shell, and cylindrical shell left end below is provided with grading plant 23, vibrating body 17 as shown in Figure 6, it is mainly comprised of eccentric block 30, main shaft 31, housing 32 and vibrating body bearing 33, housing 32 outer surfaces are equipped with abrasion-proof backing block, wherein one end is with tooth slot structure, main shaft 31 is rotationally connected by vibrating body bearing 33 and housing (32), two eccentric blocks 30 are installed in respectively the two ends of main shaft 31, and it is 180 ° that its direction is mutually, adapter ring 18 as shown in Figure 7, it by two end ring 34, one, encircle 35 and two rubber in encircle 36 and form, end ring 34 is overall annulus, middle ring 35 radially subdivision is two semi-rings, in rubber, ring 36 is together with end ring 34 strong bond, and in rubber, ring has arc inner tooth groove, and this teeth groove matches with vibrating body end teeth groove, two end ring 34 become a complete ring body with middle ring 35 by bolted, and ring body outer surface is equipped with abrasion-proof backing block, flexible axle I15 and flexible axle II21 version are just the same, just length difference, as shown in Figure 8, it is by flexible axle body 37, sealing sheath 38, flexible shaft end 39 forms, flexible axle body 37 be with one compared with coarse-wire rope as axle, by one or more, fine wire rope is wound on it forms again, also can replace lay winding wire ropes to make with high strength fibre rope, at its two ends, be fixed with flexible shaft end 39 simultaneously, this flexible shaft end will be connected with main shaft 31 and transmission device 8 shafts in vibrating body, flexible axle body 37 also can be made into multiple universal joint cascaded structures, flexible axle external body is equipped with sealing sheath 38, it is made by oil resistant abrasive rubber, and to there is enough intensity and elasticity, sealing sheath 38 two ends will guarantee its sealing with the fixing also palpus in vibrating body 17 ends, the installation of flexible axle II21 must guarantee that two eccentric block 30 directions of the connected end of two vibrating bodies are consistent, diagrid plate 16 as shown in Figure 9, it is comprised of fixed head 40, moving plate 41 and bullet 42, fixed head and moving plate are loop configuration, and there is radial gap, fixed head 40 is fixing with cylindrical shell 4, and bullet 42 is fixing with cylindrical shell end cap 3, and moving plate 41 is between the two, and be adjacent to but rotatably, to regulate, sieve seam size, transmission device 8 can determine whether to arrange deceleration device as required, and motor is to adopt buncher to be advisable, grading plant can be sieve bend structure, also can use overflow trench structure.

The quantity of the utility model inertia ball grinding machine vibrating body 17, can be one, can be also two or more, and is equipped with adapter ring 18, flexible axle I15 and the flexible axle II21 of respective numbers, forms the both-end swing kinematic system of vibrating body more than; Its type of drive can be both that one end drives, and also two ends drive, and arrange according to actual needs.

The operation principle of the utility model inertia ball grinding machine is as follows: first in cylindrical shell, add and install abrasive body (steel ball) and material, when after electric motor starting, flexible axle I15 and flexible axle II21 drive respectively two main shaft 31 and eccentric block 30 High Rotation Speeds that vibrating body 17 is interior, because two eccentric blocks in each vibrating body become 180 ° of directions to be arranged symmetrically with, and middle flexible axle II21 makes the eccentric block of two vibrating body phase near-ends in same direction, therefore, when main shaft 31 and eccentric block 30 High Rotation Speed, the huge centrifugal force that eccentric mass produces, drive two vibrating body 17 phase near-ends and drive adapter ring 18 to a direction beat, beat round about of two far-ends, because the direction of this centrifugal force is all the time around its central rotation, two vibrating bodies are produced around its both-end swing campaign of center separately, its amplitude of oscillation size becomes with thickness of feed layer, the traction action of drag-line 25 is neither completely fixed the center of vibrating body 17 and not completely without restriction, but allow to move at random in a little scope, form flexible location, this drag-line 25 has prevented again the rotation that vibrating body 17 produces because of material friction in swing campaign simultaneously, adapter ring 18 between two vibrating bodies, because itself and vibrating body two near-ends keep, teeth groove is loosening to be connected, make it also make the circular motion without rotation thereupon, this by two vibrating bodies and a two ends swing kinematic system that adapter ring forms, in inner barrel, directly contact with abrasive body with material, its all kinetic energy is directly imposed on to abrasive body and material, directly material is clashed into, extruding, grind broken, simultaneously, multiple two ends swing campaign of this system and the random movement of vibrating body center, make an interior material radially, axially and all directions such as circumference produce and roll tempestuously, stir, material and material have been strengthened, pulverization between abrasive body and material also improves the uniformity of grinding, follow the swing motion process of vibrating body, also producing a kind of dither impacts, make material because of tired broken, thereby whole process is the comprehensive of all Mechanical Crushing processes.

The utility model inertia ball grinding machine both can be used as ball mill, also can be used as inertia autogenous tumbling mill and semi-autogenous mill, if add appropriate abrasive body (steel ball) in cylindrical shell, it just becomes inertia ball grinding machine, as shown in Figure 4, high rigidity steel ball, by strengthening the broken of material and grinding, makes product granularity thinner; If do not add abrasive body, only has material, it just becomes inertia autogenous tumbling mill (without medium mill), just there is no the effect of abrasive body here, and other is identical with inertia ball grinding machine, certainly add on a small quantity abrasive body to become semi-autogenous mill, as which kind of grinding machine, use and can determine as required actually.

The utility model inertia ball grinding machine can be as wet mill as Fig. 4, during running, from inlet opening 20, add continuously appropriate recirculated water (water yield is adjustable), water and material are subject to the effect of swing kinematic system and form rotation water ring, and to carry fine granular materials mobile to discharge end lentamente by feeding end simultaneously, after arriving diagrid plate 16, coarse granule material is trapped within cylindrical shell, proceed comminution, fine granular materials carries out classification along with current enter grading plant 23 through diagrid plate 16, and diagrid plate sieve seam size is adjustable, grading plant 23 can be sieve bend structure, can be also overflow groove type structure, the utility model inertia ball grinding machine can also be used as dry grinding mill, during as this grinding machine, mainly that cylindrical shell 4 is different, as shown in Figure 5, it does not have the diagrid plate 16 in wet mill and grading plant 23 shown in Fig. 4, its technical scheme is: outside cylindrical shell 4, add cooling jacket 28 and inlet opening 27 and apopore 29, inwall is equipped with abrasion-proof backing block, both ends are provided with end cap 3, charging aperture 1 is positioned at cylindrical shell 4 right-hand member tops, air inlet 26 is located at the centre of feed end end cap 3, discharging opening 6 is positioned at cylindrical shell left end top, and be connected with external wind system, when grinding machine is worked, in cooling jacket 28, be full of and circulate cooling water, in cylindrical shell, ground fine particle stage material is transported to discharge end by means of wind-force from material feeding end, by discharging opening 6, enter into external wind system and select powder classification processing, thereby complete whole grinding process.The utility model inertia grinding machine also can be cancelled drag-line 25, vibrating body 17 is turned round having in rotation situation, but this situation can reduce the grinding effect in shattering process.

The utility model inertia ball grinding machine has the following advantage:

1, inertia kinetic energy is directly applied to comminution to material from inside, and make material be subject to strong agitation and high-frequency percussion, improve the comminution effect to material, thereby efficiency is high, less energy consumption;

2, the utility model comminution energy is from both-end swing kinematic system, square being directly proportional of its size and rotating speed, and this range of speeds is very large, and more than can reaching 1000r/min, thereby crushing energy is large, and grainding capacity is strong, and production capacity greatly improves;

3, material size wide ranges, the ratio of reduction is larger, to material wide accommodation;

4, the cylindrical shell of the utility model is for maintaining static, and swing kinematic system rotating speed is high, and quality is little, not only energy-efficient, and volume is little, simple in structure, manufactures and safeguards easily, takes up space few, and cost is low;

5 the utility model can be with material to start, and do not have iron safety problem, turn round safe and reliable.

accompanying drawing explanation

Fig. 1 is existing widely used traditional ball mill schematic diagram

(a) front view (b) fundamental diagram

1-charging gear 2-bearing 3 end cap 4-cylindrical shell 5-gear wheel 6-discharging opening 7-pinion 8-transmission devices

Fig. 2 is existing widely used autogenous tumbling mill schematic diagram

1-loading hopper 2-bearing 3-end cap 4-cylindrical shell 5-gear wheel 6-discharging opening 9-riser 10-clapboard

Fig. 3 is the existing vibrating mill schematic diagram generally using

(a) front view (b) cross-sectional view

1-charging aperture 2-bearing 3-end cap 4-cylindrical shell 6-discharging opening 8-transmission device 11-eccentric shaft 12-uprighting spring 13-base 14-crossed strip

Fig. 4 is the utility model inertia ball grinding machine schematic diagram

(a) front view (b) A-A profile

1-charging aperture 3-end cap 4-cylindrical shell 8-transmission device 12-uprighting spring 13-base 15-flexible axle I16-diagrid plate 17-vibrating body 18-adapter ring 19-inspection hole cover 20-inlet opening 21-flexible axle II 22-fines outlet 23-grading plant 24-coarse fodder outlet 25-drag-line

Fig. 5 is the utility model inertia ball grinding machine dry grinding mill cylindrical shell schematic diagram

1-charging aperture 3-end cap 4-cylindrical shell 6-discharging opening 26-air inlet 27 inlet opening 28-cooling jacket 29-apopores

Fig. 6 is the utility model inertia ball grinding machine vibrating body schematic diagram

30-eccentric block 31-main shaft 32-housing 33-vibrating body bearing

Fig. 7 is the utility model inertia ball grinding machine adapter ring schematic diagram

In 34-end ring 35-, encircle ring in 36-rubber

Fig. 8 is the utility model inertia ball grinding machine flexible axle I and flexible axle II schematic diagram

37-flexible axle body 38-sealing sheath 39-flexible shaft end

Fig. 9 is the utility model inertia ball grinding machine diagrid plate schematic diagram

(a) front view (b) A-A cutaway view

40-fixed head 41-adjustable plate 42-bullet

The specific embodiment

According to the technical scheme of the utility model Fig. 4 to Fig. 9, cylindrical shell 4 is arranged on the elastic base that spring 12 and base 13 form, cylindrical shell 4 maintains static, in cylindrical shell, be provided with two vibrating bodies 17 and an adapter ring 18, adapter ring is between two vibrating bodies, each vibrating body 17 is done flexible connection by 3 drag-lines 25 that are mutually 120 ° with cylindrical shell, flexible axle II21 links together the main shaft of two vibrating bodies 17 31, and the eccentric block direction that guarantees two near-ends is consistent, flexible axle I15 is connected the main shaft of left side vibrating body 31 with the shaft of the transmission device 8 of cylindrical shell outside, transmission device 8 can determine whether to arrange deceleration device as required, adapter ring 18 is done loosening link by its two ends tooth slot structure and the corresponding site of two vibrating bodies 17, so form a cascaded structure, the fixed head 40 of diagrid plate 16 is fixed on cylindrical shell 4 inwalls, 42 of its bullets are fixed on cylindrical shell end cap 3, its moving plate 41 is between fixed head and bullet and be adjacent to but rotatable, grading plant 23 is installed on cylindrical shell 4 discharge end bottoms.

The utility model inertia ball grinding machine can have several occupation modes, when using as ball mill, when installing material additional in cylinder, must install appropriate abrasive body (steel ball) additional; If while using as autogenous tumbling mill, without installing abrasive body additional; If while using as wet mill (as shown in Figure 4), should input clear water from water inlet 20, and require the water yield controlled; If while using as dry grinding mill, must use the dry type tube structure shown in Fig. 5, and must input cooling water and external wind power system; If cancel zip 25, vibrating body 17 can turn round having under rotation situation.

Claims (3)

1. an inertia ball grinding machine, mainly by cylindrical shell (4), vibrating body (17), adapter ring (18), transmission device (8), flexible axle I (15), flexible axle II (21), diagrid plate (16), grading plant (23), shock-absorbing spring (12), the part such as base (13) composition, it is characterized in that, cylindrical shell (4) is arranged on the elastic base being comprised of shock-absorbing spring (12) and base (13), cylindrical shell maintains static, in cylindrical shell (4), be provided with two vibrating bodies (17) and an adapter ring (18), center position at each vibrating body (17) forms flexible articulation by 3 drag-lines (25) that are mutually 120 ° with cylindrical shell (4), adapter ring (18) is placed between two vibrating bodies (17), and both ends close with it keep loosening teeth groove link, flexible axle II (21) is connected with the main shaft (31) of two vibrating bodies (17) phase near-end respectively, flexible axle I (15) couples together the main shaft of left side vibrating body (17) 31 and the transmission device (8) of cylindrical shell outside respectively, so, two vibrating bodies (17), adapter ring (18), flexible axle I (15), flexible axle II (21) and transmission device (8) form the both-end swing kinematic system of a series connection, in this system, the main shaft 31 of each vibrating body, the eccentric block 30 being fixed thereon, flexible axle I15, the flexible axle II21 rotation that is connected, each vibrating body 17 is all done the two ends swing campaign without rotation around himself center, 18 of adapter rings are made the circular motion without rotation under two vibrating bodies drive, cylindrical shell (4) inwall is fixed with abrasion-proof backing block, at the each vibrating body of correspondence (17) center position, respectively there are 3 to be mutually peep-hole and the inspection hole cover (19) of 120 °, cylindrical shell both ends are furnished with end cap (3), wherein on the end cap of feed end (3), there are charging aperture (1) and inlet opening (20), in cylindrical shell, approach discharge end and be provided with the adjustable diagrid plate (16) of gap size, cylindrical shell left end below is provided with grading plant (23), vibrating body (17) is comprised of eccentric block (30), main shaft (31), housing (32), vibrating body bearing (33) etc., housing (32) outer surface is equipped with abrasion-proof backing block, wherein one end is with tooth slot structure, main shaft (31) is rotationally connected by vibrating body bearing (33) and housing (32), two eccentric blocks (30) are installed in respectively main shaft (31) two ends, 180 ° each other, its direction, adapter ring (18) is mainly comprised of ring (36) in ring (35), two rubber in two end ring (34),, end ring (34) is overall annulus, middle ring (35) radially subdivision is two semi-rings, in rubber, ring (36) must be together with end ring (34) strong bond, in rubber, ring has arc inner tooth groove, this arc inner tooth groove will match with the teeth groove of vibrating body (17) end, two end ring and middle ring by bolted be connected to a complete ring body, ring body outer surface is equipped with abrasion-proof backing block, flexible axle I (15) and flexible axle II (21) version are just the same, just length difference, mainly by flexible axle body (37), sealing sheath (38), flexible shaft end (39) composition, flexible axle body (37) be with one compared with coarse-wire rope as axle, again one or more thinner wirerope-winding is formed on it, also can replace lay winding wire ropes to make with high strength fibre rope, flexible axle body two ends are fixed with flexible shaft end (39), this joint will be connected with the main shaft (31) of vibrating body (17) and the shaft of transmission device (8) respectively, flexible axle body (37) also can be made into multiple universal joint cascaded structures, flexible axle body (37) outer cover is equipped with sealing sheath (38), sealing sheath is made with oil resistant abrasive rubber, and requirement has enough intensity and elasticity, sealing sheath (38) two ends will guarantee its sealing with the fixing also palpus in the end of vibrating body (17), and the installation of flexible axle II (21) must guarantee that two eccentric blocks (30) direction of the connected end of two vibrating bodies is consistent, diagrid plate (16) consists of fixed head (40), moving plate (41), bullet (42), fixed head (40) and moving plate (41) are loop configuration, and there is radial sieve seam, fixed head (40) is fixing with cylindrical shell (4), bullet (42) is fixing with cylindrical shell end cap (3), moving plate (41) is between the two, and be adjacent to but rotatably, to regulate, sieve seam size.

2. the inertia ball grinding machine of narrating according to claim 1, it is characterized in that, the quantity of vibrating body (17), it can be 1, also can be 2 or multiple, and be equipped with adapter ring (18), flexible axle I (15) and the flexible axle II (21) of respective numbers, form the both-end swing kinematic system of vibrating body more than; The type of drive of this grinding machine, both can drive one end, also can drive at two ends; This grinding machine also can be cancelled drag-line (25), and vibrating body (17) is worked having under autorotation.

3. the inertia ball grinding machine of narrating according to claim 1 and 2, it is characterized in that, during as dry ball, its tube structure is, outside cylindrical shell (4), add cooling jacket (28) and inlet opening (27) and apopore (29), inwall is equipped with abrasion-proof backing block, both ends are provided with end cap (3), charging aperture (1) is positioned at cylindrical shell (4) right-hand member top, air inlet (26) is located at the centre of feed end end cap (3), discharging opening (6) is positioned at cylindrical shell left end top, and is connected with external wind system.

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