CN102614964A

CN102614964A - Millstone discharging device used on vertical roller mill

Info

Publication number: CN102614964A
Application number: CN2012101142852A
Authority: CN
Inventors: 张玉龙; 朱象
Original assignee: XUZHOU FEIHUANG HEAVY MACHINERY FACTORY
Current assignee: XUZHOU FEIHUANG HEAVY MACHINERY FACTORY
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-08-01

Abstract

The invention provides a millstone discharging device used on a vertical roller mill in industries of building materials, metallurgy, power plants, chemical industries, mine and the like and relates to engineering machinery. The millstone discharging device comprises a material baffle ring base, a first material baffle ring, a second material baffle ring and a third material baffle ring. The first material baffle ring and the second material baffle ring with the proper thickness are selected, and the material bed thickness of the certain material layer is ensured. Discharging grooves are manufactured on the third material baffle ring and are rectangular grooves or parabolic grooves, a plurality of discharging grooves are uniformly distributed on the inner hole surface of the third material baffle ring, and a certain included angle is formed between the center line of the discharging grooves and the axial line of the third material baffle ring. When materials with higher iron content and great specific gravity rotate on a constant-speed rotating millstone, the centrifugal force is also greater, the materials are rapidly enriched towards the edge of the millstone and enter the discharge grooves, iron-containing materials are rapidly discharged out of a millstone body through the material discharging grooves, then, iron particles are removed through a magnetic separator and are ensured not to return the mill again, and the stable operation of the roller mill is ensured.

Description

The mill discharge device that uses on the vertical roll grinder

Technical field

The present invention relates to a kind of engineering machinery, specifically be used for using the mill discharge device on the powder concentrator of vertical roll grinder of use of industries such as building materials, metallurgy, power plant, chemical industry, mine.

Background technology

The operation principle of vertical roll grinder is to utilize the active force between grinding roller and the mill that the material on the mill is pulverized.Treat that powder material falls mill central authorities through feeding air valve and tremie pipe, the mill that constant speed is being rotated will treat that by means of action of centrifugal force powder material outwards evenly disperses, paves, forms certain thickness material bed.Material receives on the mill rolling of a plurality of grinding rollers and is pulverized.Owing to treat that the powder material difference of specific gravity is big, slag especially, its iron-holder is than higher, and centrifugal force was also bigger when heavy material rotated on the mill that constant speed is being rotated, rapidly to the enrichment of mill edge.The vertical roll grinder that uses at present is provided with the multilayer blocking material ring on mill; Be merely able to guarantee the certain thickness bed of material, the iron amount that can't reduce on the mill continues enrichment, can't the ferrous material that be enriched on the mill be discharged the mill body rapidly; The part abrasive grit is still got back in the mill; Thereby reduced the grinding efficiency of grinding machine, caused the serious wear of grinding roller and liner plate, improved production cost greatly.

Summary of the invention

In order to solve the problems of the technologies described above, the present invention provides the mill that uses on a kind of vertical roll grinder discharge device, on the blocking material ring III, makes many discharge grooves, and discharge groove is rectangular channel or parabolic wire casing, and discharge groove and blocking material ring III axis have certain included angle.

The present invention sends out realization through following technology: the mill discharge device that uses on a kind of vertical roll grinder, this device comprises: blocking material ring pedestal, blocking material ring I, blocking material ring II and blocking material ring III.Described blocking material ring pedestal is the annular that all there is step at two ends, and is fixed on the upper end of mill body (1) through the bolt I.Described blocking material ring I, blocking material ring II and blocking material ring III are the annular of inside and outside equal diameters, and the three goes up mutual superposition extremely down, and are fixed on the upper end of blocking material ring pedestal through the bolt II.It is characterized in that: make discharge groove on the described blocking material ring III inner hole surface.

Described discharge groove is a rectangular channel, and rectangular channel has many, and many rectangular channels are uniformly distributed with on the inner hole surface that is arranged on the blocking material ring III.

The center line of described rectangular channel and blocking material ring III axis have the angle of 10 to 20 degree.

Described discharge groove is the parabolic wire casing, and the parabolic wire casing has many, and many parabolic wire casings are uniformly distributed with on the inner hole surface that is arranged on the blocking material ring III.

The center line of described parabolic wire casing and blocking material ring III axis have the angle of 5 to 10 degree.

Good effect of the present invention is:

1, the discharge groove ferrous material that will be enriched on the mill is discharged the mill body rapidly, removes abrasive grit wherein through concentration equipment again, guarantees that this part abrasive grit does not return in the mill, guarantees that roller mill operates steadily.

2, because abrasive grit does not return in the mill, reduce the wearing and tearing of grinding roller and liner plate, improve service life.

3, rational in infrastructure, processing technology thereof is simple, and is with low cost, is convenient to promote the use of.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain.

Fig. 1 is a vertical roll grinder mill structural representation.

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

Fig. 3 is the A place partial enlarged drawing of Fig. 1.

Fig. 4 is that the B of Fig. 3 is to partial enlarged view.

Fig. 5 is that the B of Fig. 3 is to another kind of embodiment partial enlarged view.

Among the figure: 1, mill body, 2, abrasion-proof backing block, 3, the liner plate fixation kit, 4, the blocking material ring pedestal, 5, the bolt I, 6, the blocking material ring I, 7, the blocking material ring II, 8, the blocking material ring III, 8-1, discharge groove, 9, the bolt II.

The specific embodiment

Like Fig. 1,2,3,4, shown in 5: the mill discharge device that uses on a kind of vertical roll grinder, this device comprises: blocking material ring pedestal 4, blocking material ring I 6, blocking material ring II 7 and blocking material ring III 8.Described blocking material ring pedestal 4 is the annular that all there is step at two ends, and is fixed on the upper end of mill body 1 through bolt I 5.Described blocking material ring I 6, blocking material ring II 7 and blocking material ring III 8 are the annular of inside and outside equal diameters, and the three is to going up mutual superposition down, and are fixed on the upper end of blocking material ring pedestal 4 through bolt II 9.It is characterized in that: make discharge groove 8-1 on described blocking material ring III 8 inner hole surface.

Described discharge groove 8-1 is a rectangular channel, and rectangular channel has many, and many rectangular channels are uniformly distributed with on the inner hole surface that is arranged on blocking material ring III 8.

The center line of described rectangular channel and blocking material ring III 8 axis have the angle of 10 to 20 degree.

Described discharge groove 8-1 is the parabolic wire casing, and the parabolic wire casing has many, and many parabolic wire casings are uniformly distributed with on the inner hole surface that is arranged on blocking material ring III 8.

The center line of described parabolic wire casing and blocking material ring III 8 axis have the angle of 5 to 10 degree.

Like Fig. 1,2,3,4, shown in 5: during use, treat that powder material falls on the abrasion-proof backing block 2 of mill body 1 central authorities through feeding air valve and tremie pipe, abrasion-proof backing block 2 is installed in mill body 1 upper end through the liner plate fixation kit, is convenient to change abrasion-proof backing block 2.Treat that powder material by means of the centrifugal force that mill body 1 rotates at a high speed, evenly disperses, paves, forms certain thickness material bed on the abrasion-proof backing block 2 of mill body 1, utilize the active force between abrasion-proof backing block 2 and the grinding roller again, the material on the mill body 1 is pulverized.According to the size of treating the powder material particle, select the blocking material ring I 6 and blocking material ring II 7 of suitable thickness for use, guarantee the material bed thickness of certain bed of material, impel the grinding machine operation more steady.

Because treat powder material difference of specific gravity difference, especially slag, its iron-holder is than higher.When heavy material rotated on the mill that constant speed is being rotated, centrifugal force was also bigger, rapidly to the enrichment of mill edge.Get into discharge groove 8-1, the ferrous material that discharge groove 8-1 will be enriched in again on the mill is discharged mill body 1 rapidly, removes abrasive grit wherein through concentration equipment again, guarantees that this part abrasive grit does not return in the mill, guarantees that roller mill operates steadily.

Claims

1. the mill discharge device that uses on the vertical roll grinder, this device comprises: blocking material ring pedestal (4), blocking material ring I (6), blocking material ring II (7) and blocking material ring III (8); Described blocking material ring pedestal (4) is the annular that all there is step at two ends, and is fixed on the upper end of mill body (1) through bolt I (5); Described blocking material ring I (6), blocking material ring II (7) and blocking material ring III (8) are the annular of inside and outside equal diameters, and the three goes up mutual superposition extremely down, and are fixed on the upper end of blocking material ring pedestal (4) through bolt II (9); It is characterized in that: make discharge groove (8-1) on described blocking material ring III (8) inner hole surface.

2. the mill discharge device that uses on the vertical roll grinder according to claim 1 is characterized in that: described discharge groove (8-1) is a rectangular channel, and rectangular channel has many, and many rectangular channels are uniformly distributed with on the inner hole surface that is arranged on blocking material ring III (8).

3. the mill discharge device that uses on the vertical roll grinder according to claim 2 is characterized in that: the center line of described rectangular channel and blocking material ring III (8) axis have the angle of 10 to 20 degree.

4. the mill discharge device that uses on the vertical roll grinder according to claim 1 is characterized in that: described discharge groove (8-1) is the parabolic wire casing, and the parabolic wire casing has many, and many parabolic wire casings are uniformly distributed with on the inner hole surface that is arranged on blocking material ring III (8).

5. the mill discharge device that uses on the vertical roll grinder according to claim 4 is characterized in that: the center line of described parabolic wire casing and blocking material ring III (8) axis have the angle of 5 to 10 degree.