CN213468033U

CN213468033U - Vertical mill energy-saving device

Info

Publication number: CN213468033U
Application number: CN202021502341.6U
Authority: CN
Inventors: 任项存; 梁沈宝; 张科昱
Original assignee: Henan Jinrong Cement Co ltd
Current assignee: Henan Jinrong Cement Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-06-18
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a found mill technical field's energy-saving device of mill immediately, including casing, selection powder rotor and mill, the selection powder rotor sets up in the top of casing inner chamber, the mill sets up in the bottom of casing inner chamber, be equipped with hot-blast import on the casing, be equipped with the last helical blade that is used for producing the ascending auxiliary wind of suction on the selection powder rotor, the mill below is equipped with the lower helical blade who links to each other with the mill and is used for producing the ascending auxiliary wind of thrust, just helical blade is located hot-blast import top down. The utility model discloses be equipped with helical blade on the selection powder rotor, helical blade under the mill below, drive through the selection powder rotor and go up helical blade and rotate, and then produce the ascending auxiliary wind of suction, helical blade's rotation under the rotation drive through the mill, and then produce the ascending auxiliary wind of thrust, under the effect of two strands of auxiliary wind, the powder on the mill can get into smoothly in the selection powder rotor, and then but greatly reduced produces hot-blast power consumption.

Description

Vertical mill energy-saving device

Technical Field

The utility model relates to a found mill technical field, concretely relates to found mill energy-saving device.

Background

In a traditional vertical mill, materials fall onto a grinding disc through a blanking inner cylinder, a grinding roller with certain pressure presses on the materials, and the grinding roller is driven to rotate due to the rotation of the grinding disc; the ground material is thrown out of the grinding disc under the action of the rotating centrifugal force of the grinding disc and enters an air ring, air flows from bottom to top in the air ring, the material is brought into a powder selecting rotor for classification under the action of wind power, fine particle finished products are selected, coarse particles directly return to the grinding disc and continue to be ground, and a closed cycle process is formed until the material is ground to be selected as finished products.

However, as the wind power lifting needs to provide extra large wind power, the power consumption of the vertical mill is high, and the ventilation power consumption generally occupies about 45% of the power consumption of the system, so how to reduce the wind power consumption becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to an energy-saving device for a vertical mill.

The utility model discloses the technical scheme who adopts does:

the design provides a vertical mill energy-saving device, includes casing, selection powder rotor and mill, the selection powder rotor sets up in the top of casing inner chamber, the mill sets up in the bottom of casing inner chamber, be equipped with hot-blast import on the casing, be equipped with the last helical blade that is used for producing the ascending auxiliary wind of suction on the selection powder rotor, the mill below is equipped with links to each other with the mill and is used for producing the lower helical blade of the ascending auxiliary wind of thrust, just helical blade is located hot-blast import top down.

Preferably, an air ring is formed between the grinding disc and the shell, a screen is arranged above the air ring, and the screen is fixedly connected with the shell.

Preferably, the screen is in the shape of an inverted frustum.

Preferably, a material distributing cone is arranged at the center of the upper surface of the grinding disc.

Preferably, the material separating cone comprises a hollow cone body and an electromagnet, and the electromagnet is arranged in the hollow cone body.

Compared with the prior art, the utility model has the advantages that:

1. the utility model discloses be equipped with helical blade on the selection powder rotor, helical blade under the mill below, drive through the selection powder rotor and go up helical blade and rotate, and then produce the ascending auxiliary wind of suction, helical blade's rotation under the rotation drive through the mill, and then produce the ascending auxiliary wind of thrust, under the effect of two strands of auxiliary wind, the powder on the mill can get into smoothly in the selection powder rotor, and then but greatly reduced produces hot-blast power consumption.

2. The utility model discloses be equipped with the screen cloth of the platform form of falling round above the wind ring, through the coarse screen effect of this screen cloth to the material, can make the material of great granule return the mill and smash, and then make the mill below scrape the resistance greatly reduced that advances of flitch.

3. The utility model discloses put at mill central point and be equipped with hollow cone and electro-magnet, the existing evenly distributed that does benefit to the material of hollow cone also can provide the protection for the electro-magnet, and simultaneously under the magnetic force effect of electro-magnet, boring iron impurity is adsorbed on hollow cone, can effectively reduce iron impurity to the damage of grinding roller.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a material-separating cone;

the powder separation device comprises a shell 1, a powder separation rotor 2, a grinding disc 3, a hot air inlet 4, an access hole 5, an upper helical blade 6, a lower helical blade 7, a scraping plate 8, a screen 9, a material separation cone 10, a hollow cone 11, an electromagnet 12, a grinding roller 13 and an air ring 14.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.

Example 1: as shown in fig. 1, an energy-saving device for a vertical mill comprises a shell 1, a powder selecting rotor 2 and a grinding disc 3, wherein the powder selecting rotor 2 is arranged at the top of an inner cavity of the shell 1, the grinding disc 3 is arranged at the bottom of the inner cavity of the shell 1, the bottom of the shell 1 is provided with a hot air inlet 4, and the middle part of the shell 1 is provided with an access hole 5; an upper helical blade 6 is arranged on the outer side of the powder selecting rotor 2, the upper helical blade 6 can generate auxiliary wind with upward suction force when the powder selecting rotor rotates 2, a lower helical blade 7 connected with the grinding disc 3 is arranged below the grinding disc 3, the lower helical blade 7 is positioned above the hot wind inlet 4, and the lower helical blade 7 can generate auxiliary wind with upward thrust force when the lower helical blade 7 rotates along with the grinding disc 3.

In the embodiment, in order to make the material crushing more sufficient and reduce the traveling resistance of the scraper 8 below the grinding disc 3, a screen 9 in a shape of an inverted circular truncated cone is particularly arranged in the casing 1, the screen 9 is arranged right above the air ring 14 and is fixedly connected with the casing 1, and the air ring 14 is arranged between the grinding disc 3 and the casing 1.

In the embodiment, in order to reduce the damage of iron impurities in the material to the grinding roller 13, as shown in fig. 2, a material distribution cone 10 is arranged at the center position of the upper surface of the grinding disc 3, the material distribution cone 10 comprises a hollow cone 11 and an electromagnet 12, the electromagnet 12 is arranged in the hollow cone 11, and the iron impurities adsorbed on the material distribution cone 10 can be taken out from the access opening 5.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a vertical mill energy-saving device, includes casing, selection powder rotor and mill, the selection powder rotor sets up in the top of casing inner chamber, the mill sets up in the bottom of casing inner chamber, be equipped with hot-blast import, its characterized in that on the casing: the powder selecting rotor is provided with an upper helical blade for generating auxiliary wind with upward suction, a lower helical blade which is connected with the grinding disc and used for generating auxiliary wind with upward thrust is arranged below the grinding disc, and the lower helical blade is positioned above the hot wind inlet.

2. The vertical mill energy-saving device according to claim 1, characterized in that: an air ring is formed between the grinding disc and the shell, a screen is arranged above the air ring, and the screen is fixedly connected with the shell.

3. The vertical mill energy-saving device according to claim 2, characterized in that: the screen is in the shape of an inverted frustum.

4. The vertical mill energy-saving device according to claim 1, characterized in that: the center of the upper surface of the grinding disc is provided with a material dividing cone.

5. The vertical mill energy-saving device according to claim 4, characterized in that: the material distribution cone comprises a hollow cone body and an electromagnet, and the electromagnet is arranged in the hollow cone body.