CN2313663Y - Superfine mill with high yield and narrow fineness - Google Patents

Abstract

The superfine mill for disintegrating non-metallic material comprise a cylindrical body, a main spindle, a rotary table, an abrasive block, a blower, a hopper, a squirrel-cage sorting rotor and an inducing wind pipe. The bottom of the cylindrical body is equipped with the main spindle whose top is fixed the rotary table. The abrasive block is symmetrically fixed on periphery of the rotary table. A ring lining board is fixed on relative position between the inner of the cylindrical body and the abrasive block. The top of the cylindrical body in the bottom point of the rotary table connects with a tangential wind inlet pipe and a wind outlet pipe. The wind inlet pipe connects with the blower, and the wind outlet pipe connects with a wind returning pipe for leading to the top of the rotary table. The hopper and the sorting rotor are respectively mounted on the top and the middle part of the cylindrical body. The space surrounded by the blades communicates with the inducing wind pipe mounted on the top of the cylindrical body. The main spindle adopts air seal and the blade clearance of the sorting rotor is adjusted. The mill has high production, and the powder product is distributed in narrow scope.

Description

The narrow distributed superfine flour mill of high yield

The utility model relates to a kind of superfine powder grinding machine that is used to pulverize nonmetallic materials.

In prior mechanical ultra-fine grinding equipment, a kind of centrifugal mill that is used to pulverize nonmetallic materials is arranged, and it is made of cylindrical shell, main shaft and power train thereof, air blast, bowl-shape rotating disk, abrading block, squirrel-cage sorting rotor and power train thereof, induced duct, dispenser.On material to be pulverized is sent into rotating disk in the cylindrical shell from dispenser, abrading block is horizontally rotated by main shaft drives around being fixed on rotating disk, produce relative motion with the liner plate that is fixed on the cylinder inboard wall during rotation, material is worn into powder, the air-flow that the powder under rotating disk of dropping is produced by air blast brings to above the rotating disk, the fine powder of rotating disk top is inhaled to the cylindrical shell top by air inducing, enter the sorting peritrochanteric, wherein thinner powder passes the rotor that the gap between rotor blade is rotated and sucks after induced duct is discharged cylindrical shell.

Above-mentioned centrifugal mill is with advantage such as its very high ratio of reduction, no dust, noise be low and be subjected to the welcome of powder processing industry, but it also has the following disadvantages: 1. main shaft adopts common labyrinth sealing, and seal wearing and tearing and poorly sealed easily, behind the sealing part abrasion, the material that wears away can be sneaked in the powder and polluted product, the poorly sealed powder that can make again enters axle system, have a strong impact on lubricated, shortening axle is the service life of revolving meber, therefore behind the several order of classes or grades at school of every work, will readjust seal.2. because seal is contained on the main shaft, thereby the main shaft cantilever must design longerly, and long main shaft can make the rotating speed of main shaft rotating disk be restricted, and has not only reduced operating efficiency, also causes easily the equipment vibrations to cause flour mill output not high.3. the impeller clearance of sorting rotor is fixed, and the sorting scope is mainly by changing the rotating speed of sorting rotor, thereby the sorting adjusting range is little, and the product distribution is wide, and the bulky grain powder passes through rotor easily.

In view of above-mentioned, the purpose of this utility model just provides the superfine powder grinding machine of a kind of output height, powder product narrow distribution range.

For reaching above-mentioned purpose, the utility model adopts following technical scheme:

The narrow distributed superfine flour mill of a kind of high yield, comprise cylindrical shell, main shaft and power train thereof, the bowl-type rotating disk, abrading block, air blast, hopper, squirrel-cage sorting rotor and power train thereof, induced duct, wherein: main shaft is contained in the cylindrical shell bottom, rotating disk is fixed on the main shaft top, abrading block is fixed on the periphery of rotating disk symmetrically, cylinder inboard wall and abrading block relative position are fixed a circle liner plate, be positioned at place, rotating disk below on the cylindrical shell and connect tangential blast pipe and discharge pipe, blast pipe and discharge pipe are on same plane and parallel, blast pipe links to each other with air blast, discharge pipe is connected to the backwind tube that causes the rotating disk top, hopper is contained in the cylindrical shell middle part, the sorting rotor that is contained in cylindrical shell top is by connecting cylinder, be separately fixed at the circular upper and lower plates of this connecting cylinder upper and lower, the blade of circular distribution constitutes, be connected between the upper and lower plates upright blade, the through hole of the space that blade enclosed through offering on the upper plate communicates with induced duct on being contained in cylindrical shell top, it is characterized in that: described main shaft adopts aeroseal, this aeroseal is made of the high-pressure air hose that is built up in the closed chamber around the main shaft and communicate with the sealing chamber, and the top of closed chamber communicates with the space of bowl-shape rotating disk bottom; In described sorting rotor, upper plate and lower plate are divided equally and are set as inner panel and outside plate, and inner panel embeds in the outside plate, following inner panel and following outside plate bolting, wherein the nut end of a bolt is made gear-like, be shaped on the arc-shaped rack with this gears engaged in the groove on the following inner panel corresponding with it, the end face outer rim of inner panel and outside plate is evenly offered vertical jack up and down, and the two ends up and down of blade are respectively established two axles and inserted respectively in the jack of inner panel and outside plate up and down.

In the implementing measure of technique scheme: the wall thickness of described bowl-shape rotating disk successively decreases from top to bottom, the external self-feeder of described hopper, and the curved strip of described abrading block, its outer surface is shaped on rill.

During flour mill work, high-pressure air hose is blown into high pressure draught to closed chamber, and this air-flow upwards drains into the rotating disk bottom, can prevent that powder from entering axle system downwards.Turn is contained in the bolt of band gear on the lower plate, and the relative position of inner and outer plates is changed, and just can change the interval of blade, thereby obtain the powder of different sharpness of separation.

Because the utility model adopted aeroseal, and airflow direction make progress, thereby do not have the problem of sealing part abrasion and polluted product, also prevented that powder from entering axle system simultaneously and influence spool is the life-span of revolving meber.No longer need to install seal owing to adopt behind the aeroseal on the main shaft, thereby the length of main shaft can shorten, because behind the contraction in length of main shaft, grinding machine can be in even running under the more speed, so can improve the output of grinding machine.Because the blade of sorting rotor can be adjusted at interval, thereby can improve sharpness of separation, obtains the narrow high-quality powder of particle size distribution.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is the structure chart of sorting rotor;

Fig. 3 is the lower plate structure chart of sorting rotor;

Fig. 4 is the structure chart of abrading block;

Fig. 5 is the vertical view of abrading block.

The utility model comprises cylindrical shell, main shaft and power train thereof, bowl-shape rotating disk, abrading block, air blast, dispenser, squirrel-cage sorting rotor and power train thereof, induced duct.In Fig. 1: 1B type V-belt 2 sorting shaft pulley, 3 sorting axles, 4 induced ducts, 5 sorting axle beds, 6 sorting rotors, 7 adjustment doors, 8 screen clothes, 9 backwind tubes fixedly gusset 10 hoppers 11 backplates 12 abrading blocks 13 bowl-shape rotating disk 14 locking nuts 15 main shafts 16 closed chambers 17 main motor 18 narrow V belts 19 bases 20 motors are taken turns 21 fuel tanks, 22 main shaft belt wheels, 23 oil pumps, 24 oil pipes, 25 bearing blocks, 26 high-pressure air hoses, 27 blast pipes, 28 stirring plates, 29 liner plates, 30 tups, 31 backwind tubes, 32 cylindrical shells, 33 motor plates, 34 sorting motors, 35 motors wheel.

As shown in the figure, the hopper 10 of external dispenser is contained in cylindrical shell 32 middle parts, main shaft 15 is contained in cylindrical shell 32 bottoms, bowl-shape rotating disk 13 is fixed on main shaft 15 tops, abrading block 12 is fixed on the periphery on rotating disk 13 tops symmetrically, cylindrical shell 32 inwalls and abrading block 12 relative positions are fixed a circle liner plate 29, be positioned at place, rotating disk 13 belows on the cylindrical shell 32 and connect tangential blast pipe 27 and discharge pipe (not shown), blast pipe and discharge pipe are on same plane and parallel, blast pipe 27 links to each other with air blast, the wind that air blast is blown into nearly rotates below rotating disk 13 and flows out from discharge pipe after the week, and discharge pipe is connected to the backwind tube 31 that causes the rotating disk top.Material to be pulverized is sent in the cylindrical shell from hopper 10, the abrading block 12 and the tup 30 that are fixed on the rotating disk 13 are horizontally rotated by main shaft 15 drivings, the tup 30 that material is rotated clashes into and fragmentation, during abrading block 12 rotation with liner plate 29 generation relative motions, the material that is crashed by tup 30 is worn into powder, fine powder in the powder is attracted by air inducing, seeing through screen cloth 8 enters around the sorting rotor 6, all the other powders then drop below rotating disk 13 between abrading block 12 and the liner plate 29, this part powder is by the air-flow driven rotary of air blast, along the inwall rotation direction discharge pipe of cylindrical shell 32, brought to the top of rotating disk 13 then by backwind tube 31, once more by levigate.

Main shaft adopts aeroseal, and this aeroseal constitutes by being built up in closed chamber 16 around the main shaft 15 and the high-pressure air hose 26 that communicates with the sealing chamber, and the top of closed chamber 16 communicates with the space of bowl-shape rotating disk 13 bottoms.High-pressure air hose 26 external high pressure centrifugal blowers, high-pressure blast enters closed chamber 16 by high-pressure air hose 26, because the sealing function of 25 systems of bearing block, air intake can only be discharged from the gap of closed chamber 16 and rotating disk 13 bottoms and be formed " wind film ", thereby stop the powder of rotating disk 13 bottoms to enter closed chamber 16, realize the sealing of axle system, overcome the labyrinth sealed shortcoming.And then because after adopting aeroseal, no longer need to install labyrinth on the main shaft 15, therefore the length of main shaft 15 can shorten greatly, because behind the contraction in length of main shaft, it is more steady to turn round, and impacts the influence that brings in the time of can overcoming brokenly shivering material effectively, so grinding machine can be in even running under the more speed, in view of the above rotary speed is brought up to 1800-2000 rev/min by 950-1000 rev/min, can make the levigate efficient of grinding machine improve more than 2 times.

By above corrective measure, improved the operating efficiency of grinding machine, realized high yield purpose of the present utility model.

The structure of sorting rotor is seen Fig. 2 and Fig. 3, among the figure: 53 times inner panels of inner panel 44 blades, 45 gear-like nut end 46 sharfs, 47 female 48 jack 49 slip jacks, 50 bolts 51 times outside plates, 52 nuts of locking, 54 connecting cylinders, 55 sorting main shafts, 56 keys, 57 grooves, 58 through holes on the outside plate 43 on 41 vanelets 42.The sorting rotor is contained in cylindrical shell 32 tops, and it is made of the blade 44 of connecting cylinder 54, the circular upper plate that is separately fixed at connecting cylinder 54 above and belows and lower plate, circular distribution.The upper plate branch is set as inner panel 43 and last outside plate 42, last inner panel 43 embeds to be gone up in the outside plate 42, lower plate is also divided and is set as down inner panel 53 and following outside plate 51, and following inner panel 53 embeds in the following outside plate 51, following inner panel 53 is fixing with three bolts of following outside plate 51 usefulness 50, wherein the nut end 45 of a bolt is made gear-like, be shaped on arc-shaped rack in the groove 57 on the following inner panel 53 corresponding with this gears engaged with it, the upper surface outer rim of following inner panel 53 and following outside plate 51 is offered 60 vertical jacks 48 and slip jack 49 respectively equably, the lower surface outer rim of last inner panel and last outside plate is also offered corresponding jack respectively, 60 blades 44 erectly are connected between the upper and lower plates, and it is up and down respectively established two axles 46 and insert the jack 48 of inner panel and outside plate up and down respectively in two ends, in 49.The through hole 58 of space through offering on the upper plate that is enclosed by 60 blades 44 communicates with induced duct 4 on being contained in cylindrical shell 32 tops.

Aforementioned entering in sorting rotor 6 fine powder on every side, wherein thinner powder passes the gap of 44 of rotor blades, the rotor that is rotated sucks, pass the through hole 58 of upper plate then and discharge cylindrical shell 32 through induced duct 4, the then vibration around rotor of remaining powder, form autogenous grinding between the powder particle at that time, pass rotor blade after levigate and discharge cylindrical shell 32.

The size distribution of superfine powder is to weigh the important indicator of superfine powder quality, the principal element that influences size distribution is a separating effect, this grinding machine adopts the adjustable sorting rotor of precision, its principle is: blade 44 can be the center of circle with the axle in the jack 48 that is inserted in inner panel, slide in the slip jack 49 of outside plate with another and to realize the adjustment of blade angle, unscrew each bolt 50 and locking female 47 during adjustment earlier, rotation has the bolt of gear-like nut end 45, by with the arc-shaped rack of this gears engaged, drive inner panel 53 down, connecting cylinder 54, last inner panel 43 together rotates, make inner panel and outside plate produce relative motion, rotate an angle thereby drive blade 44.The variation of blade angle has changed the direction that particle in interlobate effective clearance and the powder is subjected to the blade active force, the bulky grain powder is because its particle diameter is big, outside can't being isolated in by the little gap that rotor forms, another part particle is subjected to air inducing gravitation, collides active force and the centrifugal force that produces with blade between the rotor that rotates, wherein the greater is because quality is big, centrifugal force is big, throw away along the centrifugal force direction after being collided, fine powder then passes through rotor under graviational interaction.

From as seen above-mentioned, change with blade angle, blade effective clearance and particle are stressed also to be changed thereupon, the particle of screening is also different, come to satisfy the different requirements that powder particles is distributed thus, reduce bulky grain effectively, dwindle the distribution of granularity, realized the purpose of the narrow distribution of the utility model superfine powder.

In addition, the utility model has also been done following improvement:

The wall thickness of bowl-shape rotating disk 13 is modified into decrescendo from top to bottom by the original wall type that waits, and under the condition that does not increase load, can improve the rotator inertia of rotating disk like this, makes spindle operation more steady.

Hopper 10 external self-feeders, this self-feeder is commercially available existing product, its principle is to constitute negative-feedback between delivery rate and grinding machine electric current: with the grinding machine Current Control in a reasonable range, when the grinding machine electric current is lower than this scope, current signal feeds back to external self-feeder, improve delivery rate, and the increase of delivery rate has strengthened mill load, the grinding machine electric current is risen; Opposite current signal affacts self-feeder when electric current is higher than this scope, reduces delivery rate, reduces mill load, and the grinding machine electric current is descended.The grinding machine electric current is controlled in the optimum range of permission like this, thereby guarantees the evenly reasonable of mill load, gives full play to capacity of equipment.

Abrading block 12 adopts arc strip (consulting Figure 4 and 5), and its outer surface is shaped on rill 121.Its advantage is: simple shape is easy to make, and can effectively overcomes owing to change the energy imbalance that part causes when changing; The rill on abrading block surface has increased effective work area of abrading block, makes the motion of powder form fluctuation, has increased mill, the meeting of colliding between powder, thereby has improved levigate effect.

The utlity model has following advantage:

1. have the very high ratio of reduction, can advance≤the piece material of 150mm, also can advance≤the 7.5mm meal equipment Extremely strong to the material adaptive capacity;

2. by the measure such as the improvement of abrading block and rotary speed being increased substantially, make hourly output than existing grinding machine Improve 15-20%;

3. sharpness of separation can be adjusted as required, and narrow particle size distribution can effectively overcome bulky grain and enter product;

4. capacity usage ratio height;

5. grinding machine moves under condition of negative pressure, no dust pollution.

Claims (4)

1. narrow distributed superfine flour mill of high yield, comprise cylindrical shell, main shaft and power train thereof, bowl-shape rotating disk, abrading block, air blast, dispenser, squirrel-cage sorting rotor and power train thereof, induced duct, wherein: main shaft is contained in the cylindrical shell bottom, rotating disk is fixed on the main shaft top, abrading block is fixed on the periphery of rotating disk symmetrically, cylinder inboard wall and abrading block relative position are fixed a circle liner plate, be positioned at place, rotating disk below on the cylindrical shell and connect tangential blast pipe and discharge pipe, blast pipe and discharge pipe are on same plane and parallel, blast pipe links to each other with air blast, discharge pipe is connected to the backwind tube that causes the rotating disk top, hopper is contained in the cylindrical shell middle part, the sorting rotor that is contained in cylindrical shell top is by connecting cylinder, be separately fixed at the circular upper and lower plates of this connecting cylinder upper and lower, the blade of circular distribution constitutes, be connected between the upper and lower plates upright blade, the through hole of the space that blade enclosed through offering on the upper plate communicates with induced duct on being contained in cylindrical shell top, it is characterized in that:

Described main shaft adopts aeroseal, and this aeroseal constitutes by being built up in closed chamber around the main shaft and the high-pressure air hose that communicates with the sealing chamber, and the top of closed chamber communicates with the space of bowl-shape rotating disk bottom;

In described sorting rotor, upper plate and lower plate are divided equally and are set as inner panel and outside plate, and inner panel embeds in the outside plate, following inner panel and following outside plate bolting, wherein the nut end of a bolt is made gear-like, be shaped on the arc-shaped rack with this gears engaged in the groove on the following inner panel corresponding with it, the end face outer rim of inner panel and outside plate is evenly offered vertical jack up and down, and the two ends up and down of blade are respectively established two axles and inserted respectively in the jack of inner panel and outside plate up and down.

2. the narrow distributed superfine flour mill of high yield as claimed in claim 1, it is characterized in that: the wall thickness of described bowl-shape rotating disk successively decreases from top to bottom.

3. the narrow distributed superfine flour mill of high yield as claimed in claim 1 is characterized in that: the external self-feeder of described hopper.

4. the narrow distributed superfine flour mill of high yield as claimed in claim 1 is characterized in that: the curved strip of described abrading block, its outer surface is shaped on rill.

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