CN215843209U

CN215843209U - Roller mill

Info

Publication number: CN215843209U
Application number: CN202120095070.5U
Authority: CN
Inventors: 贺金文; 王正新; 张艺馨; 白金龙; 张仲元
Original assignee: Shougang Jingtang United Iron and Steel Co Ltd
Current assignee: Shougang Jingtang United Iron and Steel Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2022-02-18
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a roller mill, relates to the technical field of mineral separation, and solves the problem that a roller mill device in the roller mill is seriously damaged. The roller mill is provided with a bin, wherein the bin comprises a feeding hole and a discharging hole and is used for temporarily storing materials to be milled; the feeding device is arranged above the feeding hole and used for feeding materials to be ground into the bin; the roller mill device is arranged below the discharge port and is used for rolling the materials to be milled; the device comprises a roller mill device, a feed inlet, a humidifying device, a roller mill device and a grinding device, wherein at least one group of humidifying devices used for humidifying materials to be ground are arranged at the position of the feed inlet, the humidified materials to be ground enter the roller mill device to be ground, and part of the materials to be ground after being ground form a wear-resistant layer attached to the roller mill device. According to the utility model, the humidifying device is arranged to realize the function of humidifying the material, so that part of material particles formed after the material is subjected to roller grinding of the roller grinding device can be adhered to the roller grinding device under the action of moisture to form the wear-resistant layer, the roller grinding device is protected by the wear-resistant layer, and the service life of the roller grinding device is prolonged.

Description

Roller mill

Technical Field

The utility model relates to the technical field of mineral separation, in particular to a roller mill.

Background

In the mineral processing industry, the cost of crushing and grinding accounts for 80% of the mineral processing cost, and more crushing and less grinding are important measures for reducing the cost of crushing and grinding.

At present, the most advanced equipment in the crushing industry is a high-pressure roller mill, and the pin of the high-pressure roller mill is a part directly contacted with ores, so that the abrasion is the most serious, the service life of the pin is greatly shortened, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to improve the defects of the prior art and provides a roller mill to solve the problem of serious abrasion of roller pins in the roller mill.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

a roller mill, comprising:

the bin comprises a feeding hole and a discharging hole and is used for temporarily storing materials to be ground;

the feeding device is arranged above the feeding hole and used for feeding materials to be ground into the stock bin;

the roller mill device is arranged below the discharge port and is used for rolling the material to be milled;

the material to be ground enters the roller mill device after being humidified, and part of the material to be ground after being milled forms a wear-resistant layer attached to the roller mill device.

Optionally, the humidifying device comprises a water spraying component, a water supply pipe and a water pump, the water spraying component is connected with the water pump through the water supply pipe, and a plurality of water spraying holes facing the material to be ground are formed in the water spraying component.

Optionally, the water spraying part comprises a ring-shaped water spraying pipe, and the water spraying holes are distributed at intervals along the ring-shaped water spraying pipe.

Optionally, the water spraying direction of the water spraying holes faces the material to be ground between the feed port and the discharge port.

Optionally, the water spraying part comprises a water storage container with an arc-shaped structure, and the water spraying holes are distributed at intervals along the water storage container with the arc-shaped structure.

Optionally, the roller mill further comprises a filter, and an output end of the filter is communicated with an input end of the water pump.

Optionally, the roller mill further comprises a frequency converter for controlling the rotation speed of the water pump, and the frequency converter is electrically connected with the water pump.

Optionally, the roller mill further comprises a blower arranged below the water spraying part, and water sprayed from the water spraying holes is blown to the material to be milled by the blower.

Optionally, the rotating speed of the blower is 2000 r/min.

Optionally, the storage bin is of a funnel-shaped structure;

at least one group of the humidifying devices are arranged on the top side wall of the storage bin and are opposite to the conveying device.

Compared with the prior art, the roller mill provided by the utility model has the beneficial effects that:

according to the utility model, through the arranged humidifying device, the function of humidifying the materials conveyed into the bin by the conveying device is realized, so that part of the ground material particles of the humidified materials after being subjected to the roller grinding of the roller grinding device can be adhered to the rod nails of the roller grinding device under the action of moisture, the material particles adhered to the rod nails can be increasingly tightened due to the extrusion action of the rod nails, and finally, the wear-resistant layer consisting of the material particles is formed on the rod nails, so that the materials subsequently entering the roller grinding device after the wear-resistant layer is formed can be ground on the wear-resistant layer, the rod nails are protected, the service life of the rod nails is prolonged, and the use cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the structure of a roller mill of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 101-belt conveying device, 102-bin, 1021-feeding hole, 1022-discharging hole, 103-stick nail, 2-water pump, 201-frequency converter, 202-water supply pipe, 203-water spraying part, 2031-water spraying hole, 204-filter and 3-blower.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the utility model and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example (b):

the roller mill provided by the utility model comprises a stock bin 102, a conveying device, a roller mill device and a humidifying device, as shown in figures 1 and 2. The storage bin 102 is a funnel-shaped structure, the upper opening of the storage bin 102 is a feeding hole 1021, and the lower opening of the storage bin is a discharging hole 1022. The conveyor and the humidifying device are disposed on both sides of the feed inlet 1021 and are arranged oppositely to facilitate the humidifying device to humidify the ore material conveyed by the conveyor into the bin 102. A roller mill device is arranged below the discharge opening 1022, and the roller mill device comprises two mutually meshed roller nails 103, wherein the conveying device comprises but is not limited to a belt conveying device 101 and a crawler conveying device.

In addition, the humidifying position of the ore raw material by the humidifying device includes but is not limited to the following three types: first, the ore material is discharged from the discharge port 1022 after entering the feed port 1021 of the silo 102; secondly, humidifying the ore raw material on a conveying device; third, the ore material stacked on the discharge port 1022 is humidified.

Specifically, the humidifier includes a water spray member 203, a water supply pipe 202, and a water pump 2, and the water spray member 203 is connected to the water pump 2 through the water supply pipe 202. The water spraying part 203 is arranged on the side wall of the top end of the storage bin 102, and the arrangement mode of the water spraying part 203 includes but is not limited to fixed connection, such as: the water spray member 203 may also be rotatably positioned so that the angle of the water spray member can be adjusted as desired to select the location at which water is sprayed onto the ore material. The side of the water spraying part 203 facing the conveying device, i.e. the ore material, is provided with a plurality of water spraying holes 2031 distributed at intervals to humidify the ore material.

It must be noted that the moisture content of the ore material after humidification should be below 5% to avoid the formation of water streams. The water spraying member 203 may be selected according to the requirement, for example, but not limited to, a common water pipe, a water pipe with a ring structure, a container with a cambered surface structure, and the like, because the number of the water spraying holes 2031 is larger than that of the common water pipe, so that the water spraying amount is larger, the water spraying area is wider, and the area capable of humidifying the ore material is larger. Of course, the distance between the water spray holes 2031 and the number of the water spray holes 2031 can be set according to the actual requirement, for example: the number of the water spraying holes 2031 provided at the dense place of the ore material may be increased more to ensure the humidifying effect.

In addition, the water inlet end of the water pump 2 is also connected with a filter 204 for filtering industrial water, so as to filter impurities in the water and avoid blocking the water spray holes 2031. It is of course possible that the filter 204 is mounted at the output of the water pump 2 or below the water spray member 203.

The blower 3 is also arranged below the water spraying part 203 and is arranged on the side wall of the storage bin 102. The blower 3 blows the water sprayed from the water spray holes 2031 into an atomized state. It is expected that the area of contact with the ore material becomes large as the area increases after the water is blown into the atomized state, and the proportion of the water adhered to the surface of the ore material becomes large for a single ore material. Wherein, the rotation speed of the motor of the blower 3 should be greater than or equal to 2000r/min to ensure that the water sprayed from the water spraying holes 2031 is sufficiently blown into an atomized state. In addition, the blower 3 is not limited to be fixedly installed, and can also be rotatably installed on the side wall of the storage bin 102, and meanwhile, the blower 3 can also adopt a fan capable of automatically shaking the head to swing to expand the range that the blower 3 can blow.

It should be noted that the blower 3 and the water spray member 203 may be arranged to be swung in cooperation with each other to humidify the ore material, which is suitable for the case where the ore material conveyed by the conveyor is horizontally wide; or the blower 3 and the water spray part 203 may be provided in plural to achieve an increase in humidification area.

For the convenience of understanding of the present invention, the ore material falls into the bin 102 under the conveying of the belt conveyor 101, the blower 3 and the water spraying part 203 work simultaneously during the ore material falls into the bin 102, the blower 3 blows the water sprayed from the water spraying part 203 into an atomized state, and the atomized water contacts with the ore material. The ore material with the atomized water enters the place where the stick nails 103 are engaged through the discharge port 1022 of the bin 102 and is ground into ore particles by the stick nails 103. During the grinding process, part of ore particles adhere to the rod nail 103 under the action of moisture, the part of ore particles adhering to the rod nail 103 is increasingly tightly contacted with the rod nail 103 under the grinding and pressing of the rod nail 103, and finally, a wear-resistant layer consisting of the ore particles is formed on the rod nail 103. The ore material entering the junction of the rod nail 103 from the discharge port 1022 of the bin 102 is ground into ore particles, and the rod nail 103 itself is not in direct contact with the ore material, thereby protecting the rod nail 103.

Meanwhile, it is worth explaining that the moisture content of the ore raw material after being humidified is lower than 5%, and the purpose of avoiding forming water flow is that if the moisture content of the ore raw material is too high to form water flow, the ore particles ground by the rod nail 103 can be directly washed away by the water flow, and cannot be adhered to the rod nail 103 to form a wear-resistant layer, so that the rod nail 103 cannot be protected.

In addition, the proportion of water adhered to the surface of each ore raw material after being atomized is increased, so that the proportion of ore particles adhered with water formed after the ore raw materials are ground by the rod nails 103 is increased, the opportunity and efficiency of adhering the ore particles to the rod nails 103 are increased, and the rapid formation of the wear-resistant layer can be ensured. Moreover, a new wear-resistant layer can be quickly formed again after a part of the wear-resistant layer falls off, and the protection force on the stick nail 103 is enhanced through phase change.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims

1. A roller mill, comprising:

the bin (102) comprises a feeding port (1021) and a discharging port (1022) and is used for temporarily storing materials to be ground;

the material conveying device is arranged above the feeding hole (1021) and is used for conveying materials to be ground into the stock bin (102);

the roller mill device is arranged below the discharge port (1022) and is used for rolling the materials to be milled;

at least one group of humidifying devices for humidifying the materials to be ground are arranged at the position of the feeding hole (1021), the humidified materials to be ground enter the roller mill device to be milled by the roller mill, and part of the materials to be ground after being milled by the roller mill form a wear-resistant layer attached to the roller mill device.

2. A roller mill according to claim 1 characterized in that the humidifying device comprises a water spraying member (203), a water supply pipe (202) and a water pump (2), the water spraying member (203) is connected with the water pump (2) through the water supply pipe (202), and the water spraying member (203) is provided with a plurality of water spraying holes (2031) facing the material to be milled.

3. A roller mill according to claim 2 characterized in that the water spraying means (203) comprises a ring-shaped structure of water spraying pipes, the water spraying holes (2031) being spaced along the ring-shaped structure of water spraying pipes.

4. A roller mill according to claim 3 characterized in that the water spray direction of the water spray holes (2031) is directed onto the material to be milled between the feed opening (1021) and the discharge opening (1022).

5. A roller mill according to claim 2 characterized in that the water spraying means (203) comprises a water reservoir of an arc structure, the water spraying holes (2031) being distributed at intervals along the water reservoir of the arc structure.

6. A roller mill according to claim 2, characterized in that it further comprises a filter (204), the output of the filter (204) being in communication with the input of the water pump (2).

7. A roller mill according to claim 2, characterized in that it further comprises a frequency converter (201) for controlling the rotational speed of the water pump (2), the frequency converter (201) being electrically connected to the water pump (2).

8. A roller mill according to any of the claims 2-7 characterized in that it further comprises a blower (3), the blower (3) is arranged below the water spraying part (203), and the water sprayed from the water spraying holes (2031) is blown to the material to be milled by the blower (3).

9. A roller mill according to claim 8, characterized in that the rotational speed of the blower (3) is 2000 r/min.

10. A roller mill according to claim 1, characterized in that the silo (102) is of funnel-shaped construction;

at least one group of the humidifying devices is arranged on the top side wall of the storage bin (102) and is opposite to the conveying device.