CN2338093Y

CN2338093Y - Medium circulation super fine stirring and milling machine

Info

Publication number: CN2338093Y
Application number: CN 98201195
Authority: CN
Inventors: 盖国胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-23
Filing date: 1998-02-23
Publication date: 1999-09-15
Anticipated expiration: 2008-02-23

Abstract

The utility model relates to a medium circulation super fine stirring and milling machine for producing micro-fine powder, composed of a dynamic force, a barrel body of a milling machine, a stirring main shaft, a stirring rod and milling medium. The utility model is characterized in that the bottom of the barrel body of the milling machine is in a cone-shaped structure and an outside circulation mechanism for the milling medium is arranged on the bottom. The outside circulation mechanism for the milling medium is composed of a discharge device, a milling medium separator, a lift device, a milling medium barn and a feed device. The utility model through the outside circulation of the milling medium, achieves the aims of decreasing the starting torque, cancelling the dead angle in the milling machine, causing the product to be epigranular, lowering the temperature in the milling machine and improving the milling efficiency.

Description

The medium circulation superfine stirring mill

The utility model relates to a kind of device that powder material is carried out the agitation grinding ultra-fine grinding, especially can finish the abrasive media outer loop, reduces staring torque, reduce to grind the agitation grinding ultrafine crusher at interior dead angle.

At present, industrial departments such as building materials, chemical industry increase day by day to the demand of superfine powder product, and existing ultra-fine grinding equipment can not satisfy the production needs, still do not have the ultra-fine grinding equipment of the continuous production average grain diameter of big industrialization 0.5-2.5 micron superfine powder.Because agitator mill is by means of small medium material particles directly to be applied external force to carry out ultra-fine grinding, its specific energy consumption is much smaller than past airslide disintegrating mill commonly used, and this advantage just seems very outstanding under the bigger situation for the treatment of capacity.In addition, the product granularity and the size distribution that stir mill are controlled within the specific limits, and can be used for finishing the operation that airslide disintegrating mill was difficult to finish such as powder surface modification coating, thereby are used for the production of micron-class superfine powder by increasing alternative airslide disintegrating mill.Yet the existing problem of the agitator mill of present industrial use is that (1) grinding machine must be with the negative startup of closing under the condition that abrasive media exists, and staring torque is difficult to realize equipment enlarging and serialization operation too greatly; (2) grinding machine is inner adopts flat-bottom structure, thereby makes medium and material form the dead band in mill; (3) abrasive media the time can not be discharged from grinding machine in work, and the heat that agitation grinding produced can not in time be pulled away, and causes that temperature is too high in the mill, working condition worsens, the grinding charge material is rotten and problem such as lining life-span reduction.

The purpose of this utility model is at the existing problem of agitator mill, improves tube structure and prevent the inner dead band that forms of grinding machine on existing equipment principle basis; Increase abrasive media from the inner continuous discharge of grinding machine with to the inner cycling mechanism of loopback continuously of grinding machine, reach the purpose of operating temperature in reducing the grinding machine staring torque and grinding.

To achieve these goals, the technical solution adopted in the utility model is: (1) will stir the floss hole that medium and material are offered in the mill bottom, abrasive media with can be constantly by grinding material discharge through discharger from the grinding machine bottom, send into by lifter in the warehouse at agitator mill top.When starting, the part abrasive media is discharged, thereby guarantee that low negative closing starts operation, sends abrasive media back to agitator mill then gradually.Therefore can reduce starting current greatly, the installed power that improves agitator mill maximizes grinding machine; (2) after abrasive media of Pai Chuing and the feed separation again through cooling processing, return then in the mill and reuse, solve grinding machine internal heat transfer problem; (3) flat-bottom structure with the agitator mill bottom changes the awl bottom structure into, adds the continuous discharge of abrasive media, thereby has solved dead angle problem in the mill.

The utility model has obtained following useful effect owing to adopted technique scheme: abrasive media and grinding charge material can be finished the ultra-fine grinding operation at short notice once by grinding machine.Most of material and abrasive media have been discharged the grinding machine outside when starting, and the grinding machine staring torque significantly reduces, and grinding machine is maximized becomes possibility.Adopt tapered polycrystalline substance, the inner no dead angle of grinding machine has guaranteed the product granularity uniformity.Because the recycling of medium, particularly its good cooling results in the dry type continuous stirring ultra-fine grinding process, can avoid Yin Gaowen and the material that causes is rotten, can under the controlled condition of grinding machine internal temperature, carry out surface activation process to material; In wet type continuous stirring ultra-fine grinding process, because recycling of medium can be finished high concentration, full-bodied ultra-fine grinding; Also can carry out modification to material handles.Above-mentioned advantage makes equipment investment and operating cost reduce significantly.

The medium circulation superfine stirring mill that the utility model is involved is made up of power, grinding mill barrel, stirring main shaft, stirring rod and abrasive media, it is characterized in that: the bottom of grinding mill barrel becomes tapered structure, and is provided with abrasive media outer loop mechanism.The abrasive media outer loop mechanism of this grinding machine is made up of discharger, abrasive media separator, lifter, abrasive media storehouse and dispenser.The annexation of this grinding machine abrasive media cycling mechanism each several part is: directly connect discharger at the bottom of the awl of cylindrical shell, discharger links to each other with the medium lifter through the abrasive media separator, and lifter top connects the abrasive media storehouse.Bottom, medium storehouse links to each other with grinding mill barrel through dispenser.

Below in conjunction with accompanying drawing and example the utility model is described further:

The utility model structure such as accompanying drawing: 1. power, 2. stir main shaft, 3. cylindrical shell, 4. stirring rod, 5. discharger, 6. abrasive media separator, 7. lifter, 8. dispenser, 9. abrasive media storehouse.

As accompanying drawing, the power 1 that is installed in the equipment top links by shaft coupling and stirring main shaft 2.Stir main shaft 2 vertical installations, above level be inserted with stirring rod 4.Raw material and abrasive media feed in the grinding mill barrel 3 from the top respectively.Grinding mill barrel top is that cavity is cylindrical, and draw ratio is 3-5, forms main comminuting space; The grinding mill barrel bottom is that cone angle is spent with interior cone 60, to guarantee the motion smoothness of material, is connected with discharger 5 in the bottom at the awl end with flange.Abrasive media is with grinding that raw material clashes into, pushes, shears under the mixing of stirring rod 4 on the main shaft 2 is stirred; Pulverized product and abrasive media move down simultaneously under the effect of gravity and discharge from the grinding machine bottom by discharger 5 at last.Abrasive media of discharging and material separate abrasive media and fine powder product through abrasive media separator 6, and abrasive media is sent into the abrasive media storehouse 9 at main process equipment top through lifter 7.Medium is cooled off in abrasive media storehouse 9, and cooled medium is sent into grinding machine inside again through dispenser 8 and reused.

Claims

1, a kind of agitation grinding formula medium circulation superfine stirring mill is made up of power, grinding mill barrel, stirring main shaft, stirring rod and abrasive media, it is characterized in that: be provided with abrasive media outer loop mechanism, and the bottom of grinding mill barrel becomes tapered structure.

2, medium circulation superfine stirring mill according to claim 1 is characterized in that: the outer loop mechanism of abrasive media is made up of discharger, abrasive media separator, lifter, abrasive media storehouse and dispenser.

3, medium circulation superfine stirring mill according to claim 1, it is characterized in that: directly connect discharger at the bottom of the awl of cylindrical shell, discharger links to each other with the medium lifter through the abrasive media separator, and lifter top connects the abrasive media storehouse, and bottom, medium storehouse links to each other with grinding mill barrel through dispenser.