CN2925609Y - Efficient centrifugal flour mill - Google Patents

Abstract

The utility model is a high efficiency centrifugal flour grinding machine, effectively solving the problem that the wearing parts of the original equipment is difficult to replace, and that the flour grinding efficiency is low. The structure of the utility model is that a polishing wheel is arranged in a scroll casing and installed on a horizontal rotating axle, the horizontal rotating axle extends out of the scroll casing and installed in the bearing seat of the upper part of the base seat, a belt pulley is set on the outer end of the horizontal rotating axle, a material feeding inlet is set at the center of the front surface plate of the polishing wheel, a counterattack ring is fixed on the periphery of the polishing wheel, a gradually wide air duct is formed between the counterattack ring and the scroll casing, the material discharging air duct pipe is connected with a rough selector through a connecting pipe, a coarse material returning inlet is set on the upper part, a material feeding hopper is installed on the front surface plate of the scroll casing of at the lower part of the rough material returning inlet directly opposite to the material feeding inlet at the center of the cover plate of the polishing, a classifying device is set on the rough selector, and a speed adjusting motor is installed on the upper part of the classifying device. The structure of the utility model is novel and unique, the installation and operation are convenient, the utility model can be widely used in the fields of chemical industry, light industry, building materials, electric power, energy, mines, etc. and used for the smashing of materials of cement, gypsum, building ceramic, graphite, clay, coal-waste rocks, etc.

Description

The efficient centrifugal flour mill

One, technical field

The utility model relates to crushing and grinding machinery, particularly a kind of efficient centrifugal flour mill that need not to grind Jie.

Two, background technology

The plant equipment that is used for hard crisp material powder processing common on the market mainly contains ball mill, airflow milling, Raymond mill, centrifugal mill etc.Centrifugal mill is the new machine that developed recently gets up, thus cardinal principle be utilize centrifugal force to make between material and crash panel all around, material and the material mutually the collision grinding reaches the purpose of material being carried out crushing and grinding.Centrifugal flour mill has obtained certain promotion and application with himself special advantages.The structure of existing such flour mill mainly comprises inlet air plenum, broken mill chamber, separation chamber and material discharge chamber, be mounted with the classifying turbine of rotation in the separation chamber, the outlet of impeller communicates with the discharge chamber that is positioned at the separation chamber top, is mounted with the material feed arrangement on the housing of separation chamber.Be positioned at the rotating disk on lower housing portion and top and classification rotary blade and be installed in samely on the vertical shaft of housing, drive by same power set.Being positioned at the indoor horizontal rotating disk that contains several plates hammers that is equipped with of broken mill of separation chamber below, being provided with wear-resisting lining around the broken mill chamber inner walls of rotating disk, is the annular gap between rotating disk outer rim and the wear-resisting lining.This annular gap communicates with separation chamber and inlet air plenum.Such flour mill tool does not use mill such as steel ball, rod iron to be situated between and advantage such as grinding harder objuct material is in light weight, and floor space is little, and the ratio of reduction is big, and finished product grain size is thinner.But existing equipment produces two shortcomings because broken mill chamber and separation chamber are positioned at same housing: 1, vulnerable part is changed difficulty; Problems such as 2, the material that is suspended in the housing is subjected to the effect of two low-pressure areas up and down simultaneously, causes partial material to be broken mill (overground) repeatedly, causes mill efficiency low, and the body wearing and tearing are big.

Three, utility model content

At above-mentioned situation, the purpose of the utility model just provides a kind of efficient centrifugal flour mill, can effectively solve the original equipment vulnerable part and change difficulty, the problem that mill efficiency is low, the technical scheme of its solution is, include brokenly the mill chamber, the discharging air channel, roughly select choosing and divide device, grading plant and buncher, broken mill chamber is by spiral case, the counterattack circle and the formation of dumping, dumping to place is contained on the horizontal rotating shaft in the spiral case, horizontal rotating shaft stretches out in the bearing block that spiral case is contained in pedestal top, horizontal rotating shaft has belt pulley on the outer end, there is charging aperture at the front panel center of dumping, the periphery of dumping is fixed with counterattack circle, form gradually wide air channel between counterattack circle and the spiral case, the discharging wind channel tube divides device to link to each other by connecting pipe with roughly selecting to select, roughly selecting choosing divides the device below to be coarse fodder returning charge mouth, coarse fodder returning charge mouth below charging aperture over against the upper cover plate center of dumping on the spiral case front panel is equipped with feed hopper, above roughly selecting choosing branch device grading plant is housed, buncher is equipped with on grading plant top, the utility model novel structure uniqueness, easy to install, highly versatile, be applicable to brittle material powder process, can be widely used in chemical industry, light industry, daily use chemicals, building materials, electric power, the energy, industries such as mine are used for crushing cement, gypsum, build pottery, graphite, clay, coal grinds raw materials such as stone.

Four, description of drawings

Fig. 1 is a structural front view of the present utility model.

Fig. 2 is a structure side view of the present utility model.

Fig. 3 is the structure chart of dumping of the present utility model.

Fig. 4 be among Fig. 3 A-A to cutaway view.

Fig. 5 is counterattack coil structures figure of the present utility model.

Fig. 6 be among Fig. 5 B-B to cutaway view.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

By Fig. 1, shown in Figure 2, the utility model is, include brokenly the mill chamber, the discharging air channel, roughly select choosing and divide device, grading plant and buncher, broken mill chamber is by spiral case 1, the counterattack circle 2 and 3 formations of dumping, dump and 3 place and be contained on the horizontal rotating shaft 17 in the spiral case 1, horizontal rotating shaft 17 stretches out in the bearing block 18 that spiral case 1 is contained in pedestal 20 tops, horizontal rotating shaft has belt pulley 19 on 17 outer ends, there is charging aperture 5 at 3 front panels, 16 centers of dumping, 3 peripheries of dumping are fixed with counterattack circle 2, form gradually wide air channel between counterattack circle 2 and the spiral case 1, discharging wind channel tube 15 divides device 6 to link to each other by connecting pipe 13 with roughly selecting to select, it is coarse fodder returning charge mouth 21 that choosing divides device 6 belows, coarse fodder returning charge mouth 21 belows charging aperture over against the upper cover plate center of dumping on spiral case 1 front panel 16 is equipped with feed hopper 4, above roughly selecting choosing branch device 6 grading plant is housed, buncher 9 is equipped with on grading plant top.

Described dump 3 be by upper cover plate 22, lower cover 23 and between upper and lower cover plate several radially, uniform blade 24 constitutes (referring to Fig. 3,4), the circular charging aperture that upper cover plate 22 centers have the charging aperture 5 with front panel 16 centers to match and answer; Have on the said counterattack circle 2 a plurality of even distributions, gap 20mm (about) counterpunch board 25 (referring to Fig. 5,6); Said grading plant is that the classifying turbine 10 by grading room 11 and interior dress thereof constitutes, and grading room 11 upper sides have fine powder delivery outlet 7, and classifying turbine 10 is contained on the take-off (propeller) shaft of buncher 9 on top; For convenient for installation and maintenance, guarantee result of use, discharging wind channel tube 15 and connecting pipe 13 are linked together by ring flange 14; Grading room 11 with roughly select choosing and divide device 6 to link together through ring flange 12, roughly select choosing and divide device 6 to roughly select choosing branch device for cyclone type.

Operating position of the present utility model is, drive the rotation at a high speed of dumping by the driven by motor belt pulley, the brittle material of granularity below 30mm added by feed hopper, enter dumping of rotation at a high speed through charging aperture, dumping upward, radially-arranged blade makes material accelerated motion, material is thrown to the periphery at a high speed and is fixed on counterpunch board on the counterattack circle, with the counterpunch board high velocity impact after, material is fractured into powder and fine particle.Form gradually wide air channel owing to exist the space to lead between counterattack circle and the spiral case between the counterpunch board on the counterattack circle, the air-flow of high speed strenuous exercise carries to be broken into and enters cyclone type by outlet through connecting pipe than the material of fine grain and roughly select choosing and divide device.The material that is crashed to pieces rotates and the formation eddy current along barrel in choosing divides device, because action of centrifugal force, the material that particle diameter is bigger progressively drops down onto coarse fodder returning charge mouth after being positioned at the skin of swirling eddy and roughly selecting choosing branch device wall friction, deceleration; The less material of particle diameter is positioned at the internal layer of rotation ascending air, and the grading plant that rises to the top with the air-flow that rotates carries out classification.Qualified material is along with gas enters impeller from the blade grid of rotary blade seam, finally by fine powder outlet centralized collection; Around being blocked to by the impeller blade grid, the material that does not reach the product cut size requirement roughly selects the returning charge mouth of choosing minute device bottom because of the effect of the gravity cyclone type that falls back.Defective material is discharged by the returning charge mouth, enters once more through charging aperture and dumps, and is thrown to counterpunch board, collides into powder.Material constantly dished out, collided and mutual collision between self, autogenous grinding etc. repeatedly repeatedly the back discharge flour mill until qualified back.

The particle diameter of product material is subjected to the restriction of classifying turbine rotating speed. and different rotating speeds has the critical particle diameter of different grading, and the critical particle diameter of rotating speed high product is little, otherwise the critical particle diameter of product is then big.The particle diameter of controllable rotation speed system product thing grain by the control classifying turbine.Therefore classifying turbine is designed to its rotating speed and can regulates.Also the dumped influence of rotating speed of the particle diameter of product and output.The rotating speed height of rotating disk, fine grinding and ultra-fine mill efficient improve, and fine-graded material ratio increases in the finished product materials; The rotating speed of rotating disk is low, and coarsely graded material ratio increases in the finished product materials.Therefore can regulate the operating condition of grinding machine relevant apparatus according to product requirement and performance.

Found out that by above-mentioned the utility model has following advantage:

1, wear-out part: dump and to strike back the replacement and installation of circle convenient. Original vertical centrifugal flour mill Dump and strike back the circle be horizontal positioned, feed pipe, material collecting disc, outer cover casing are housed above dumping, The casing top is equipped with analytical engine and is selected powder. When dumping and counterattack is irised out existing wearing and tearing need to change the time, be by hanging Installing is standby could be removed the analytical engine of casing and casing top, and then sheds material collecting disc and could change throwing Dish or counterattack circle. Main rotary shaft of the present utility model is horizontal positioned, dump and strike back the circle perpendicular to ground Install, powder selection device, dump and to strike back circle relatively independent, change and dump and when strikeing back circle, only need take off The front panel casing of spiral case carries out. Greatly simplify the Renewal process that consumable accessory easily grinds part, reduced maintenance Expense is saved maintenance workload and working time, makes maintenance, easy to maintenance quick;

2, system wind resistance is less, and the ability of convey materials can reach 1: 1 (being that weight of material can reach 1.2kg in per 1 cubic metres of air), so the PR existing product can be enhanced about more than once under identical dump diameter and speed conditions.The reason that the utility model can effectively reduce windage is: be the space that is not less than 20mm between counterpunch board upper plate and the plate, and the counterattack circle of vertical structure does not radially have the space.Worm frame is adopted in the outer air channel of the utility model counterattack circle, makes system wind resistance less;

3, cyclone type is roughly selected to select and is divided device that coarse granule, meal and fine powder have been carried out pre-separation, can prevent effectively that qualified fine powder from entering brokenly the mill chamber repeatedly, causes overground.Also can be in time than the coarse granule material roughly select choosing by cyclone type and divide a device to return to dump to carry out crushing and grinding, this had both saved energy consumption, had also alleviated the live load of classifying turbine, had improved the grading precision, reduced the wearing and tearing of classifying turbine simultaneously, had prolonged service life;

4, each governing loop of the present utility model is relatively independent, easy to adjust, flexible, effective, the hard crisp material of different physical features can be broken the product of wearing into the different grain size scope, effectiveness of classification height, constant product quality.

Claims (6)

1, a kind of efficient centrifugal flour mill, include brokenly the mill chamber, the discharging air channel, roughly select choosing and divide device, grading plant and buncher, it is characterized in that, broken mill chamber is by spiral case (1), counterattack circle (2) and dump (3) constitute, dump (3) place and be contained on the horizontal rotating shaft (17) in the spiral case (1), horizontal rotating shaft (17) stretches out in the bearing block (18) that spiral case (1) is contained in pedestal (20) top, horizontal rotating shaft (17) has belt pulley (19) on the outer end, there is charging aperture (5) at (3) front panel (16) center of dumping, (3) periphery of dumping is fixed with counterattack circle (2), form gradually wide air channel between counterattack circle (2) and the spiral case (1), discharging wind channel tube (15) divides device (6) to link to each other by connecting pipe (13) with roughly selecting to select, roughly selecting choosing divides device (6) below to be coarse fodder returning charge mouth (21), coarse fodder returning charge mouth (21) below is gone up over against the charging aperture at the upper cover plate center of dumping at spiral case (1) front panel (16) feed hopper (4) is housed, above roughly selecting choosing branch device (6) grading plant is housed, buncher (9) is equipped with on grading plant top.

2, efficient centrifugal flour mill according to claim 1, it is characterized in that, said dumping (3) be by upper cover plate (22), lower cover (23) and between upper and lower cover plate several radially, uniform blade (24) constitutes, the circular charging aperture that upper cover plate (22) center has the charging aperture (5) with front panel (16) center to match and answer.

3, efficient centrifugal flour mill according to claim 1 is characterized in that, a plurality of even distributions, the gap counterpunch board (25) at 20mm is arranged on the said counterattack circle (2).

4, efficient centrifugal flour mill according to claim 1, it is characterized in that, said grading plant is classifying turbine (10) formation by grading room (11) and interior dress thereof, grading room (11) upper side has fine powder delivery outlet (7), and classifying turbine (10) is contained on the take-off (propeller) shaft of buncher (9) on top.

5, efficient centrifugal flour mill according to claim 1 is characterized in that, said discharging wind channel tube (15) and connecting pipe (13) are linked together by ring flange (14).

6, efficient centrifugal flour mill according to claim 1 is characterized in that, said grading room (11) with roughly select choosing and divide device (6) to link together through ring flange (12), roughly select choosing and divide device (6) to roughly select choosing branch device for cyclone type.

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