CN103521299A

CN103521299A - Disc attrition mill

Info

Publication number: CN103521299A
Application number: CN201310504089.0A
Authority: CN
Inventors: 郭宝东
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-24
Filing date: 2013-10-24
Publication date: 2014-01-22

Abstract

The invention provides a disc attrition mill which can replace a ball mill to be used for performing abrasive machining on iron powder or ores. The disc attrition mill comprises an upper milling disc and a lower milling disc and is characterized in that the lower milling disc is fixed on a driving shaft of a motor; the upper milling disc is connected with a rack, is fixed, cannot rotate, but can ascend or descend freely; an upper mill is provided with a feed port, the middle of the lower surface of the upper mill is concave, and a milling part at the exterior of the upper mill is provided with a milling slot; the middle of an outer milling slot formed at the exterior of a lower mill is provided with a material distribution plate which is high in middle and low in exterior; the milling part of the lower milling disc is thick in middle and thin in exterior. In addition, the upper milling disc is provided with a feeding hopper, a spring and a piston component. The disc attrition mill can be used for processing low-grade iron powder and further directly processing small-granularity ores smashed by a hammer crusher, and can be matched with a ball mill so as to process returned sand on a high-frequency screen, thereby improving the yield of the ball mill.

Description

Disc grinder

Technical field: patent of the present invention relates to a kind of machinery of attrition process iron powder.

Hold art background: in real ore dressing processing, ball mill is widely used, yet ball mill has the shortcomings such as cost is high, power consumption is large, noise is large.

Patent of invention content:

The task of patent of the present invention is: for the problems referred to above, provide a kind of disc grinder, it can replace ball mill to process low-grade iron powder, to its porphyrize processing, thereby reaches needed high-grade iron powder; Can also directly process the less ore of granularity after hammer mill is pulverized; Can also coordinate the sand that returns on ball mill processing high-frequency screen, thereby improve the output of ball mill.Its technical solution is: a kind of disc grinder, comprise upper and lower two mills, it is characterized in that: lower millstone is fixed on motor driving shaft, upper millstone is connected in frame, fixing it can not rotate but can be along with the grinding component free-falling of wearing and tearing, upper millstone is provided with feeding mouth, and intermediate recess outside, its underpart is provided with grinding groove.In the middle of lower millstone, be provided with cutting plate, outside is provided with grinding groove.Wherein said cutting plate is arranged on lower millstone center sub-material from inside to outside, the oblique same direction of its direction and grinding groove.This external upper millstone top is provided with material bin, spring, piston element and press rods.

Its operation principle: the less ore of the low-grade iron powder of required processing or granularity enters in mill by the feeding mouth of upper millstone, through cutting plate, assign in grinding groove, because lower millstone rotation and upper millstone produce friction, through grinding groove, grind, thereby iron powder or ore porphyrize are reached to the object of powder material.The thickness of grinding can be effective through overregulating the piston element on mill top, and the downward pressuring spring of piston element makes the thinner of material grinding thereby produce downward power.

Compare with ball mill, the advantage of patent of the present invention is:

1, cost is low.Manufacturing a ball mill needs hourglass head, two bistriques, staving, gear ring, bistrique sieve, reductor, motor, frame etc., also will all spread liner plate in its staving, loads onto iron ball.Patent of the present invention only needs motor, frame, axle, upper and lower two mills just passable, and cost is only equivalent to the 10%-20% of ball mill.

2, save the energy, power consumption is few.Patent of the present invention is to produce friction through lower millstone rotation and upper millstone, through grinding groove, grind to reach the object of powder material, therefore need not add iron ball, and the liner plate that two mill means of abrasion casting with manganese steel or steel alloy are cast with manganese steel or steel alloy than ball mill is few a lot, the liner plate that needs 5-10 ton left and right on general ball mill, and in patent of the present invention, two mill means of abrasion used only need 0.1-1 ton left and right just much of that.Motor on ball mill drives ball milling rotation need to overcome the weight of ball mill self, the weight of iron powder or ore in the weight of the weight of liner plate, iron ball, staving, and its power consumption is huge; And the frictional force that patent of the present invention only need overcome upper millstone and lower millstone just, power consumption economizes a lot than ball mill.

3, simple in structure, easy to manufacture, operation and maintenance is all very convenient.

4, noise is low.Ball mill is that the impulsive force while the ore of its inside or the rolling of iron powder and iron ball being fallen by rotation staving is ground, and its noise is huge, and patent of the present invention is by the friction of upper lower millstone, to reach the object of powder material, and its noise is very little.

Patent shortcoming of the present invention is to process bulky grain ore, need will after large grain ore grinding, grind again with the hammer mill generally using now, so also there is a kind of benefit, granule ore after pulverizing can first select one time through magnetic separator, after mine tailing is selected, grind through patent of the present invention, so therefore output also can increase again.

Patent of the present invention is of many uses, upper outside except can be used on iron ore, also can be used in the industries such as gold mine or lime ore deposit.

Accompanying drawing explanation:

Fig. 1 is the structural representation of patent of the present invention.

Fig. 2 is the lower plane schematic diagram of upper millstone.

Fig. 3 is floor map on lower millstone.

Fig. 4 is grinding groove shape schematic diagram.

Fig. 5 is lower millstone outer grinding groove shape schematic diagram.

The specific embodiment:

As shown in Figure 1, patent of the present invention provides a kind of disc grinder, and it comprises upper and lower two mills, it is characterized in that: motor 1 is fixed in frame 3, and its lower millstone 4 is fixed on motor driving shaft 2, and upper millstone 5 is provided with feeding mouth 7.Intermediate recess be provided with grinding groove 12 below it.As shown in Figure 3, said cutting plate 9 is arranged on lower millstone center, sub-material from inside to outside, the oblique same direction of grinding groove of its direction and lower millstone.As shown in Figure 2,3, the grinding groove 12 of grinding groove on lower millstone 4 13 and upper millstone 5 intersects in working order time, only in this way when it is during in relative motion, and the grinding effect that just can produce.

Claims

1. a disc grinder, comprise upper and lower two mills, it is characterized in that on motor (1) fixed frame (3), its lower millstone (4) is fixed on motor driving shaft (2), upper millstone (5) is connected in frame (3), fixing it can not rotate but can freely rise or fall, upper millstone (5) is provided with feeding mouth (7), its underpart intermediate recess, outside means of abrasion is provided with grinding groove (12), and upper millstone top is provided with material bin (6), spring (8), piston element (10) and press rods (11).Lower millstone (4) outside is provided with outer grinding groove (13), and centre is provided with cutting plate (9).

2. according to the disc grinder of claim 1, it is characterized in that: said cutting plate (9) is radial arc being uniformly distributed at lower millstone (4) center, high outside low in the middle of cutting plate (9), sub-material from inside to outside, its outside is higher than the grinding component of lower millstone (4), the oblique same direction of grinding groove of cutting plate (9) and lower millstone (4).

3. according to the disc grinder of claim 1 or 2, it is characterized in that: the arc also straight shape of said grinding groove (12), the shape of groove to lower millstone (4) direction of rotation by high step-down, the width of the outside grinding groove (13) of lower millstone (4) is identical, the opposite direction of the oblique rotation of its direction, the height of grinding groove (13) uprises from inside to outside gradually.According to grinding, thickness is required, can be provided with and the same grinding groove of grinding groove (12) on lower millstone (4), also can not establish outside grinding groove (13).The grinding groove of upper and lower like this two mills intersects in working order time.

4. according to the disc grinder of claim 1 or 2, it is characterized in that: upper millstone (5) is made by high abrasion resisting material with the grinding component of lower millstone (4), is bolted, and after wearing and tearing, can unload free replacing.The means of abrasion of lower millstone (4) can be made into thick middle outer thin, also can be made into thickness identical, the parts that thin and thick is the same.

5. according to the disc grinder of claim 1 or 2, it is characterized in that: the grinding component of upper millstone (5) and lower mill (4) is the grinding of the place of connecing, outside in working order time, has gap between parts, and it is large that ecto-entad becomes gradually.