CN2395800Y - Composite stirring mill for producing ultra-thin powder by dry processing - Google Patents

Abstract

The utility model relates to a composite stirring mill for producing ultra-thin powder which is composed of a composite stirring body which is driven by a main motor which passes a reduction box through a main shaft, wherein, the outer part of the stirring body is covered with a cylinder, and the inner wall of the cylinder is provided with a lining board. The upper part of the cylinder is provided with a feed inlet and a feed outlet. The middle part of the cylinder is provided with a waistband pipe along the outer wall of cylinder. The air intake of the pipe is connected with a blower. A pulrality of air intake mechanisms communicated with the pipe are arranged on the corresponding position of the cylinder wall. The feed outlet is provided with a grading plant which is composed of an impeller drove by the motor through a grading axis. The utility model has the advantages that the exit of the impeller accesses to an ash collecting box and an ash outlet, the energy consumption of the composite stirring mill is low, the production capacity and quality of the whet is high, the structure is simple, and the operation is stable and reliable. The composite stirring mill is convenient to repair, and the service life of the composite stirring mill is long.

Description

The compound agitator mill of dry production superfines

The utility model relates to and a kind of various mineral material is carried out the plant equipment of super-fine processing, especially for the compound agitator mill of dry production superfines.

Traditional medium agitating ball mill, its agitator is generally single mandrel rod formula, disc type, perforation disc type, column type, circular ring type, spiral or the like, preceding several agitators are when making circular motion, based on motion between level course, lacking up and down, circulation exchanges, though and spiral agitator has circulation interchange up and down, the stirring dynamics is inadequate again between level course.

The purpose of this utility model is to overcome the defective that above-mentioned two class agitator mills exist, and provides a kind of stirring, grinding effect good, high efficiency, and specific energy consumption is low, the compound agitator mill that is used for the dry production superfines simple in structure.

The utility model is slowed down to increase by main motor transmission reduction box and turns round the rotation of back drive stirring body, the medium ball of various diameters is done irregular compound movement in the cylinder chamber under the drive of stirring body, thereby the material to be machined that infiltrates the medium ball gap location is impacted, grind, shear, collision, mechanisms such as pressure and being broken, raw material adds the last charge level in cylindrical shell centre by charging aperture, the cylindrical shell middle part is provided with the belt type ventilation shaft, to import cylindrical shell medium inside with the joining air blast pressure wind of pipeline by air inlet mechanism, cooperate the stirring body motion to be blown out by levigate material between ball Jie, be transported to be installed in and carry out the classification processing in the outer grading plant of discharging opening, qualified powder passes through classifying turbine, dust collecting box and ash hole are by the air-introduced machine sucking-off, and defective powder is returned grinding machine and ground again.Structure of the present utility model mainly is made of by reduction box, the compound stirring body that drives through main shaft main motor, and stirring body is covered with grinding mill barrel, and liner plate is set in the cylindrical shell, and its architectural feature is:

A) on the top of cylindrical shell charging aperture and discharging opening are set, are positioned at cylindrical shell middle part and are provided with air blast waistband pipeline along outer wall, pipeline air inlet place connects air blast, communicates with the waistband pipeline and be provided with a plurality of air inlet mechanisms on the correspondence position of barrel; Answer the position to be provided with a plurality of air inlet mechanisms;

B) connect a grading plant at the discharging opening place, comprise by selecting the transmission of powder motor, form by the classifying turbine that the classification main shaft drives, the impeller discharging opening communicates with disposal box and ash hole.

The utility model also has charge pipe opening that following design feature links to each other with the charging aperture stirring body upper edge near the cylindrical shell middle part, material is fully mixed with medium and grind, the setting of discharging opening has reduced overground phenomenon because a plurality of air inlet mechanisms are evenly taken material out of around barrel.The structure of stirring body is formed double end symmetry conveyor screw by a plurality of helical blades of the outer installation of main shaft, rake formula stirring rod is housed between helical blade to combine, when stirring body is done directed movement, can stir the medium material, existing interlayer circular motion, can make shuttling movement up and down again, helical blade and rake formula stirring rod adopt high abrasion resisting material to make.

Air blast waistband two ends are associated with removing ash pipeline vertically upward and constitute air blast waistband pipeline, and pipe end has back the ash mouth, and the pipeline middle part is provided with manually-operated gate, and the powder that is used for regularly the air inlet mechanism place being overflowed is swept back in the tube chamber, in case line clogging.It is porous plate that air inlet mechanism adopts the two sides, and intermediate course is placed the demountable structure of metallic sieve.

The structure of grading plant is: two classifying turbines of classification main shaft series connection, make and select the powder motor to rotate at a high speed by V-belt transmission classification main shaft drive classifying turbine, near impeller bearing block and fan are housed successively, between a side shaft holder and fan, belt wheel is installed, classification main shaft middle part installing dust collecting box, connecting portion between dust collecting box and the classifying turbine discharging opening is provided with sealing device, and the sealing device adopts the labyrinth sealing circle of adjustable gaps.Classifying turbine, dust collecting box periphery are provided with housing, and the base plate of bearing block is installed in hull outside, and base plate is gapped with bearing outside and be connected with gusset.

The utility model is compared with existing like product has following characteristic and advantage:

1,, compared following advantage with the bottom ventilation because the belt type ventilation shaft is positioned at the middle and upper part in dischargeable capacity chamber:

1. make full use of medium ball characteristics of shuttling movement up and down in the tube chamber, both be allowed to condition at and stopped certain hour in the mill chamber, treat that it is levigate, can will be blown out by levigate material effectively again;

2. allow mill chamber below waistband efficiently distinguish (base pressure is big, the grinding efficiency height) interference-free fully levigate down, and the bottom ventilates and often will just infiltrate the meal that the bottom participates in grinding and blow out, grinding effect is poor than the utility model;

3. reduce air blast resistance (past more base drag is big more) greatly, adopted general centrifugal high pressure fan to meet the demands, saved a large amount of energy and equipment investment (bottom ventilates often will adopt roots blower, even piston type air compressor);

4. air inlet mechanism is set prevents that the thin ball of medium overflows in the chamber under the prerequisite smoothly at air intake, and the powder to oozing out also can be gone into clearly in the Tong chamber.

2, owing to install grading plant additional at the discharging opening place, utilize strong centrifugal force field that the powder that passes through is carried out accurate classification, the precise machining process of assembly welding behind the impeller employing groove milling embedding blade, guarantee its precision, the bilobed wheel structure compares with single-wheel, and incoming air area increases, and making can be thinner by material material footpath, increase the material handling capacity, improved output.The labyrinth sealing circle, adjustable gaps also reduces leakage, and the two end axles bearing adopts isolated, and fan is housed, and carries out and forces cooling and prevent the dust pollution bearing, adapts to continuous production under the high rotating speed;

3, main motor adopts YH series high-slip asynchronous motor, starting torque is big, starting performance is good, directly drive load starting, electric cabinet is installed big current start switch and protective device, load monitoring instrument, the low speed auxiliary starting device needn't be set, simplified frame for movement greatly, start-stop is random, handled easily;

4, the utility model is compared with similar common continous way dry method agitator mill, simple in structure, technological process is easy, small investment, output height, specific energy consumption only is 1/2nd of a same category of device, compare with airflow milling, under the prerequisite of guaranteeing identical output, fineness, can save energy 2～3 times with production capacity, this equipment operates steadily reliably, operating maintenance convenient, long service life.

Doing one below by accompanying drawing in conjunction with the specific embodiment of the present utility model describes in detail.

Fig. 1 is the novel structural representation of this reality.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the cylindrical shell cutaway view.

Fig. 4 is the air inlet mechanism schematic diagram.

Fig. 5 is the grading plant partial sectional view.

See Fig. 1, Fig. 2 and Fig. 3, the utility model is by running part, air-supply mixing part and classification partly constitute, main motor 20 drives main shaft 16-1 and 16 rotations of compound stirring body by V-belt transmission reduction box 1 through main bearing seat 2, stirring body is formed double end symmetry conveyor screw 16-2 by a plurality of helical blades of the outer installation of main shaft, and the rake formula stirring rod 16-3 that several horizontal bars connections are housed between helical blade combines.Stirring body is covered with grinding mill barrel 4, and build liner plate 17 is arranged at the inner tube wall and the tube end, and liner plate 17 adopts and made by the identical or akin material of abrasive dust body material, makes to pollute to reach Min., can adopt SiO as materials such as machine silicon lime stone, kaolin, talcums ₂Content is at the silica liner plate more than 99%.Be provided with charging aperture 3 and discharging opening 11 on the top of cylindrical shell 4, the charge pipe opening that links to each other with charging aperture 3 is near stirring body 16 upper edges at cylindrical shell middle part.The cylindrical shell side has observation window 5, side to open gate 7, and the bottom, gate has board plug type blowing (ball) mouth 12, and the cylindrical shell gate can be whole open, material, ball in the cleaning mill chamber, change and parts such as maintenance stirring body, liner plate, when reinforced excess, can open board plug type drain hole 12 and unload and put part pellet 19.Cylindrical shell top also is provided with ball feeding mouth 14, is used for adding medium ball.Reduction box 1 is the vertical type cylinder gear reduction box, and the other installing of the support of bearing grease-box 13 in that the cylindrical shell upper spindle connects adopts external lubricating system that reduction box is carried out forced feed lubrication and cooling.

Be positioned at cylindrical shell 4 middle parts and be provided with air blast waistband pipeline 6 along drum outer wall, pipeline air inlet 15 places connect air blast, the pipeline end has back ash mouthful 6-2, pipeline 6 middle parts are provided with manually-operated gate 6-1, communicate with waistband pipeline 6 and on the correspondence position of barrel, be provided with a plurality of air inlet mechanisms 18, referring to Fig. 4, this air inlet mechanism is that porous plate 18-1 is adopted on the two sides, and intermediate course is placed the demountable structure of metallic sieve 18-2.

Referring to Fig. 5, the grading plant 10 that is connected in the discharging opening place is by selecting powder motor 8 to give classification main shaft 10-4 by the V-belt transmission, drive the pair of series classifying turbine 10-5 rotation on the main shaft, the middle part installing dust collecting box 10-7 of classification main shaft 10-4, dust collecting box is connected with ash hole 9, the junction of dust collecting box and classifying turbine discharging opening is provided with the labyrinth sealing circle 10-6 of adjustable gaps, support at classification main shaft both sides installation shaft bearing 10-2 near impeller, fan 10-1 is installed at classification main shaft 10-4 two ends, bearing block is carried out the pressure cooling, belt wheel 10-8 is installed between the bearing block 10-2 of main shaft one side and fan 10-13, connects transmission classification main axis rotation by the V-belt of selecting powder motor 8.Classifying turbine 10-5, dust collecting box 10-7 periphery are provided with housing 10-3, and the base plate 10-2a of bearing block 10-2 is installed in housing (10-3) outside, and base plate 10-2a is gapped with bearing outside 10-2b and be connected with gusset 10-2c.Qualified powder enters dust collecting box 10-7 by classifying turbine, and is extracted out by air-introduced machine by ash hole 9, and defective powder is returned grinding machine and refaced.

Claims (9)

1, a kind of compound agitator mill that is used for the dry production superfines, mainly constitute by reduction box (1), the compound stirring body that drives through main shaft (16-1) by main motor (20), stirring body is covered with grinding mill barrel (4), and liner plate (17) is set in the cylindrical shell, it is characterized in that:

A) charging aperture (3) and discharging opening (11) are set on the top of cylindrical shell (4), be positioned at cylindrical shell (4) middle part and be provided with air blast waistband pipeline (6) along drum outer wall, pipeline air inlet (15) locates to connect air blast, communicates with waistband pipeline (6) and be provided with a plurality of air inlet mechanisms (18) on the correspondence position of barrel;

B) locate to connect a grading plant (10) at discharging opening (11), comprise that the impeller discharging opening leads to dust collecting box (10-7) and ash hole (9) by selecting powder motor (8) to form by the classifying turbine (10-5) that classification main shaft (10-4) drives.

2, according to the described agitator mill of claim 1, it is characterized in that stirring body (16) upper edge of the said charge pipe opening that links to each other with charging aperture (3) near Tong body middle part, the structure of stirring body (16) is formed double end symmetry conveyor screw (16-2) by a plurality of helical blades of the outer installation of main shaft (16-1), rake formula stirring rod (16-3) is housed between helical blade combines.

3, according to claim 1 or 2 described agitator mills, it is characterized in that air blast waistband two ends are associated with removing ash pipeline vertically upward and constitute air blast waistband pipeline (16), pipeline (6) end has back ash mouthful (6-2), and manually-operated gate (6-1) is established at the middle part.

4, according to claim 1 or 2 or 3 described agitator mills, classification main shaft (10-4) series connection two classifying turbines (10-5) that it is characterized in that said grading plant (10), bearing block (10-2) is housed close impeller (10-5) successively and fan (10-1) is installed belt wheel (10-8) between a side shaft holder (10-2) and fan (10-1), classification main shaft middle part installing dust collecting box (10-7), the connecting portion between dust collecting box and the classifying turbine ash hole is provided with sealing device.

5,, it is characterized in that cylindrical shell interior lining panel (17) adopts and made by the identical or akin material of abrasive dust body material according to the described agitator mill of claim 1.

6, according to the described agitator mill of claim 3, its feature is being that said air inlet mechanism (18) is that porous plate (18-1) is adopted on the two sides, and intermediate course is placed the demountable structure of metallic sieve (18-2).

7,, it is characterized in that said reduction box (1) is the vertical type cylinder gear reduction box, the other installing of the support of bearing that is connected with main shaft on cylindrical shell top grease-box (13) according to the described mixer of claim 1.

8,, it is characterized in that described sealing device is the labyrinth sealing circle (10-6) in its connecting portion adjustable gaps according to the described agitator mill of claim 4.

9, according to the described agitator mill of claim 4, it is characterized in that classifying turbine, dust collecting box periphery in the described grading plant are provided with housing (10-3), the base plate of bearing block (10-2) is installed in housing (10-3) outside, and base plate (10-2a) is gapped with bearing outside (10-2b) and be connected with gusset (10-2c).

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