CN201220218Y

CN201220218Y - Powder concentrator with V-shaped groove fixed guide blade

Info

Publication number: CN201220218Y
Application number: CNU2008200750775U
Authority: CN
Inventors: 付君武
Original assignee: LV Technology Engineering (Tianjin) Co Ltd
Current assignee: LV Technology Engineering (Tianjin) Co Ltd
Priority date: 2008-06-20
Filing date: 2008-06-20
Publication date: 2009-04-15
Anticipated expiration: 2018-06-20

Abstract

The utility model relates to a separator with V-shaped groove fixing guide vanes, comprising a cage type rotor and a plurality of fixing guide vanes which surround the rotor and are arranged corresponding to the outer windward side of rotor guide vanes. The separator with V-shaped groove fixing guide vanes is characterized in that the fixing guide vanes comprises a straight plate A and a trough plate with a reverse V-shaped section, which is fixedly and obliquely connected at the air inlet side of the straight plate; the rotor guide vanes comprise a straight plate B, a wearproof end plate fixedly and obliquely arranged at the outer windward side of the straight plate B, and a circular arch bent vertical bending plate which is fixedly connected to the inner side of the straight plate B and is arranged oppositely to the oblique direction of the wearproof end plate. The utility model has the advantages that fine powder is fully separated from coarse powder, the grain composition is reasonable, separation with high efficiency and high quality is realized, the output of a milling machine is improved, the energy consumption of the milling machine and the separator is lowered, and the vibration of the milling machine is weakened; and meanwhile, through arranging the wearproof end plate on the rotor guide vanes, the abrasion of the rotor guide vanes is lightened, and the service life is improved.

Description

Powder concentrator with band V-shaped groove stationary guide blades

Technical field

The utility model relate generally to industries such as being used for cement, electric power, metallurgy ore, slag, grog and raw coal, petroleum coke select the powder classifying equipoment, relate in particular to a kind of powder concentrator with band V-shaped groove stationary guide blades.

Background technology

Powder concentrator is the nucleus equipment of material grinding system in the industries such as cement, electric power, metallurgy, and main and grinding machine is used, and is that the mixing granular material after utilizing the gas suspension principle with grinding need be separated into meal, the two-part screening installation of fine powder according to using.Its structure mainly comprises: the some vertical stationary guide blades that motor, main shaft, the cage rotor of the vertical blade of employing, surrounding rotor fixedly install, return the meal funnel, carry the outlet and the housing of the wind of fine powder.Its rotor and stationary guide blades are the core texture spares of powder concentrator, the material that selects the process of coming autogenous tumbling mill in the powder process necessarily to mill arrives rotor guide vane and stationary guide blades zone under the air-flow that disperses wind drives, through adjusting spinner velocity, under the acting in conjunction of rotor and stationary guide blades, because rotor centrifugal force, the pulling force of wind and the comprehensive function result of gravity, make underproof meal return grinding machine and continue grinding, meet the requirements of fine powder and take out of and collect from outlet by wind via the meal funnel.

But the defective of powder concentrator is the straight plate shape of being shaped as of stationary guide blades or L shaped at present, during work, in the meal dropping process, part can occur and expect that powder is disperseed wind to roll again, produce the circulation of material powder in powder concentrator, when circulating load transfinites, cause the material that collapses, can be fallen back by the meal, the fine powder that disperse wind to take up in the mill this moment simultaneously.When collapsing material, also can cause a small amount of meal to enter finished product.In addition, the shape of rotor guide vane is generally straight plate shape at present, and the defective of straight plate vane is that its outside serious wear of facining the wind is so that produce fracture at work, and for preventing wearing and tearing, whole blade has adopted the wear-resisting steel plate manufacturing, and use cost is increased.Because the fault of construction of said fixing guide vane and rotor guide vane, there is following problems in powder concentrator at present: grinding efficiency is low, and energy consumption is big, contains a small amount of meal in the finished product fine powder, and grain composition is uneven, and end product quality is poor; Contain relatively large fine powder and return in the meal in the grinding machine by powder concentrator, the material mill to death occurs, consume electric power increases mill load, and because the returns powder increases, grinding machine stability is reduced, can produce vibration as Vertical Mill, ball milling can temperature raise, in a word, cause the power consumption of the mill height, yield poorly, whole efficiency reduces.

The utility model content

Main purpose of the present utility model is to provide a kind of powder concentrator with band V-shaped groove stationary guide blades at the problems referred to above, by improvement to the stationary guide blades structure, make fine powder and meal realize fully separating, grain composition is reasonable, realize high efficiency, high-quality sorting, and the raising mill output, the energy consumption of reduction grinding machine and powder concentrator alleviates the grinding machine vibration; Simultaneously, the improvement by the rotor guide blade structures alleviates the wearing and tearing of rotor guide vane, improves its service life.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of powder concentrator with band V-shaped groove stationary guide blades, comprise the facing the wind plurality of fixed guide vane of the corresponding setting in the outside of cage rotor and surrounding rotor and rotor guide vane, it is characterized in that described stationary guide blades is is that the frid of inverted V-shaped constitutes by the cross section that straight plate of A and constant tilt are connected in its inlet side.

Described rotor guide vane be by the straight plate of B, the straight plate of B facing the wind outside constant tilt setting the abrasionproof end plate and to be fixedly connected on the straight plate of B inboard and constitute with the vertical bending plate that is the circular arc bending that abrasionproof end-plate tilt direction oppositely is provided with.

Described cross section is that angle theta 1 is 20 °～60 ° between two swash plates of frid of inverted V-shaped, and wherein swash plate of fixedlying connected with the straight plate of A and the angle theta 2 between the straight plate of A are 130 °～160 °; The abrasionproof end plate of described rotor guide vane and the angle theta of the straight plate of B 3 are 120 °～170 °.

The beneficial effects of the utility model are: owing to adopted the stationary guide blades that has the V-shaped groove plate, make fine powder and meal realize fully separating, the finished particle grating is reasonable, and quality improves; Because fine powder reduces with making the grinding machine circulating load fully separating of meal, and then improves mill output, reduce the energy consumption of grinding machine and powder concentrator, alleviate the grinding machine vibration.Simultaneously, because of the rotor guide vane is provided with the abrasionproof end plate, alleviate the wearing and tearing of rotor guide vane; Prolong rotor service life.Use practice to show, according to different service conditions, mill output can improve 12～30%, and the ton power consumption can be saved 1.0～5.0 degree.

Description of drawings

Fig. 1 is a general structure schematic diagram of the present utility model;

Fig. 2 is that the rotor among Fig. 1 reaches the perspective view around the stationary guide blades part in its outside;

Fig. 3 is a plan structure schematic diagram of removing lower frame on the rotor among Fig. 2;

Fig. 4 is the amplification profile structural representation of the stationary guide blades among Fig. 3;

Fig. 5 is the amplification profile structural representation of the rotor guide vane among Fig. 3.

The principle key diagram that Fig. 6 is rotor guide vane of the present utility model and stationary guide blades in thick, fine powder assorting room.

Among the figure: 1 motor, 2 reductors, the outlet of the wind of 3 band fine powders, 4 main shafts, 5-1 upper shell, 5-2 middle shell, the 5-3 lower house, 6 stationary guide blades, the straight plate of 6-1A, the 6-2 cross section is the frid of inverted V-shaped, 7 rotor guide vanes, 7-1 abrasionproof end plate, the straight plate of 7-2B, the vertical bending plate of 7-3,8 return the meal funnel, 9 return meal funnel meal outlet, 10 powder materials flow directions, 11 cage rotors, 11-1 rotor upper frame, 11-2 rotor lower frame, the pulling force of 12 wind, 13 centrifugal force, 14 gravity, 15 coarse granule powder materials flow directions, 16 fine-grained powder materials flow directions.

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

The specific embodiment

Present embodiment is that example describes with the powder concentrator with the Vertical Mill supporting operation.Fig. 1 is a general structure schematic diagram of the present utility model; Fig. 2 is that the rotor among Fig. 1 reaches the perspective view around the stationary guide blades part in its outside; Fig. 3 is the plan structure schematic diagram of lower frame on the removal rotor of Fig. 2; Fig. 4 is the amplification profile structural representation of the stationary guide blades among Fig. 3; Fig. 5 is the amplification profile structural representation of the rotor guide vane among Fig. 3.As Fig. 1-shown in Figure 5, it is a kind of powder concentrator with band V-shaped groove stationary guide blades, mainly comprise motor 1, reductor 2, the outlet 3 of being with the wind of fine powder, main shaft 4, cage rotor 11, surrounding rotor 11 and the rotor guide vane 7 plurality of fixed guide vane 6 of the corresponding setting in the outside down with the wind, return meal funnel 8 and upper shell 5-1, middle shell 5-2, lower house 5-3.It is characterized in that described stationary guide blades 6 is is that the frid 6-2 of inverted V-shaped constitutes by the cross section that straight plate 6-1 of A and constant tilt are connected in its inlet side, described cross section is that angle theta 1 is 20 °～60 ° between two swash plates of frid 6-2 of inverted V-shaped, in this example be 22.8 °, wherein swash plate of fixedlying connected with the straight plate 6-1 of A and the angle theta 2 between the straight plate of A are 130 °-160 °, in this example are 148.6 °.As shown in Figure 4, the windward side of stationary guide blades 6, promptly the inner face of the straight plate 6-1 of the outside of frid 6-2 and A all adopts wear-resisting steel plate, and as chromium carbide compounded formula wear-resisting steel plate, the outside of the straight plate 6-1 of the inner face of frid 6-2 and A then adopts general steel plate to make substrate.In actual fabrication, the straight plate 6-1 of A is fixed together by screw-nut so that the ordinary steel face is relative with frid 6-2.Above-mentioned selection is applicable to cement and the slag powder concentrator of grinding machine.As the grinding machine that is used for raw material and coal with powder concentrator then frid 6-2 get final product with ordinary steel.

Described cage rotor 11 is to be fixedly installed and constituted by the upper and lower support body 11-1 of some rotor guide vane surrounding rotors, 11-2.As shown in Figure 5, described rotor guide vane 7 be by the straight plate 7-2 of B, the straight plate of B facing the wind outside constant tilt setting abrasionproof end plate 7-1 and to be fixedly connected on the straight plate of B inboard and constitute with the vertical bending plate 7-3 that is the circular arc bending that abrasionproof end plate 7-1 incline direction oppositely is provided with.The angle theta 3 of the straight plate 7-2 of abrasionproof end plate 7-1 and B is 120 °～170 °.In this example be 143 °.Wear-resisting steel plate is adopted in the windward side of abrasionproof end plate 7-1, as chromium carbide compounded formula wear-resisting steel plate, straight plate 7-2 of B and vertical bending plate 7-3 then adopt general steel plate to get final product, and compare the material cost reduction with the existing whole rotor guide vane of wear-resisting steel plate that adopts, and abrasion resistance strengthen.Straight plate 7-2 of B and vertical bending plate 7-3 can make integral piece with ordinary steel in actual fabrication, make the L shaped of certain circular arc angle of bend, and abrasionproof end plate 7-1 can be fixedlyed connected with the straight plate 7-2 of B by welding.

Below in conjunction with Fig. 1, Fig. 2 and Fig. 6 illustrate operation principle of the present utility model:

During powder concentrator work, the powder that is taken up by dispersion wind that comes autogenous tumbling mill is by the powder materials flow direction shown in the arrow among Fig. 1 10, quicken to rise to stationary guide blades 6 positions along the space that has the lower house 5-3 at certain angle of inclination and return between the meal funnel 8, because stationary guide blades has the special construction that the cross section is the frid 6-2 of inverted V-shaped, form low velocity eddy in the stationary guide blades zone, in this vortex, act on the stressed centrifugal force 13 on the coarse granule, the pulling force 12 and the self gravitation 14 of wind from rotor 11 generations; At this moment, material powder speed reduces, make centrifugal force 13 that rotor produces pulling force 12 greater than wind, so coarse granule is pushed in the V-shaped groove of getting back to stationary guide blades (shown in Fig. 6 arrow 15), coarse granule all returns in the meal funnel 8 along slipping under the V-shaped groove plate under the effect of gravity 14, and the meal outlet 9 by funnel is transmitted back to the grinding machine that is arranged in the powder concentrator below to be continued to mill.In this process, because the circulation of material powder in powder concentrator inside eliminated in the formation of above-mentioned low velocity eddy, expect the generation of phenomenon thereby avoid collapsing, make fine powder and meal realize fully separating.Qualified fine-grained powder enters powder concentrator inside (shown in Fig. 6 arrow 16) by rotor, sends into the gas material separating device via the outlet 3 of the wind of the band fine powder of rotor top and carries out the gas material and separate, and collect the finished product fine powder.In the material assorting room, because the outside that facings the wind of rotor guide vane 7 is provided with abrasionproof end plate 7-1, therefore significantly reduce the wearing and tearing that the material particles bump causes, prolonged equipment life.

In sum, adopt the utility model, at air-flow with before expecting that powder enters rotor, the coarse granule material promptly separates out at stationary guide blades 6 places and returns grinding machine, and qualified fine powder enters rotor and output, so efficiency of separation height, the end product quality height, powder concentrator and grinding machine power consumption reduce.The utility model is equally applicable to other milling equipments such as ball mill.

Claims

1, a kind of powder concentrator with band V-shaped groove stationary guide blades, comprise the facing the wind plurality of fixed guide vane of the corresponding setting in the outside of cage rotor and surrounding rotor and rotor guide vane, it is characterized in that described stationary guide blades is is that the frid of inverted V-shaped constitutes by the cross section that straight plate of A and constant tilt are connected in its inlet side.

2, the powder concentrator with band V-shaped groove stationary guide blades according to claim 1, it is characterized in that described rotor guide vane be by the straight plate of B, the straight plate of B facing the wind outside constant tilt setting the abrasionproof end plate and to be fixedly connected on the straight plate of B inboard and constitute with the vertical bending plate that is the circular arc bending that abrasionproof end-plate tilt direction oppositely is provided with.

3, the powder concentrator with band V-shaped groove stationary guide blades according to claim 1 and 2, it is characterized in that described cross section is that angle theta 1 is 20 °～60 ° between two swash plates of frid of inverted V-shaped, wherein swash plate of fixedlying connected with the straight plate of A and the angle theta 2 between the straight plate of A are 130 °～160 °; The abrasionproof end plate of described rotor guide vane and the angle theta of the straight plate of B 3 are 120 °～170 °.