CN212732380U

CN212732380U - Vertical superfine powder roller mill with material conveying channel

Info

Publication number: CN212732380U
Application number: CN201921533858.9U
Authority: CN
Inventors: 高俊
Original assignee: Shanghai Weizhan Machinery Engineering Co ltd
Current assignee: Shanghai Weizhan Machinery Engineering Co ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2021-03-19
Anticipated expiration: 2029-06-05
Also published as: CN210357386U

Abstract

The utility model relates to a vertical crusher. The vertical superfine powder roll mill with the material conveying channel comprises a grinding cavity, wherein the grinding cavity is provided with a material inlet and a press roll shaft insertion hole, the material inlet is inserted with the material conveying channel, a press roll shaft is inserted in the press roll shaft insertion hole, one end of the press roll shaft, which is positioned in the grinding cavity, is rotatably connected with a grinding roll, and one end of the press roll shaft, which is positioned outside the grinding cavity, is connected with a lifting device through a press roll bracket; the grinding cavity is further provided with a grinding disc, a rotating system capable of rotating the grinding disc is arranged below the grinding disc, the material conveying channel is formed by connecting a first conveying pipeline and a second conveying pipeline, a discharge port of the first conveying pipeline is located above the middle of the grinding disc and is higher than the upper end face of the grinding roller, a feed port of the second conveying pipeline is connected with a discharge port of the first conveying pipeline, a discharge port of the second conveying pipeline is located above the middle of the grinding disc, and the distance between the second conveying pipeline and the grinding disc is not more than 5 cm. Thereby send the material to grinding chamber from the casing outward through first pipeline.

Description

Vertical superfine powder roller mill with material conveying channel

The filing date of the original application of the divisional application is as follows: in 2019, 06 and 05, with the application numbers: 2019208442465, the name is: a vertical superfine powder roller mill.

Technical Field

The utility model relates to the field of machinary, concretely relates to vertical rubbing crusher.

Background

A pulverizer is a machine that pulverizes a large-sized solid raw material to a desired size.

The pulverizer may be classified into a coarse pulverizer, a pulverizer, and an ultra-fine pulverizer according to the size of the pulverized or crushed material.

The external force applied to the solid in the crushing process comprises four kinds of shearing, impacting, rolling and grinding. The shearing is mainly used for the coarse crushing and smashing operation and is suitable for the crushing or smashing operation of tough or fibrous materials and large materials; the impact is mainly used for crushing and rolling fragile materials in crushing operation, and is mainly used for carrying out superfine crushing operation on most of materials in high-fineness crushing and superfine crushing operation; the grinding is mainly used for ultramicro grinding or ultra-large grinding equipment and is suitable for further grinding operation after grinding operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take material transfer passage's vertical superfine powder roll-in to grind.

The utility model provides a technical problem can adopt following technical scheme to realize:

the vertical superfine powder roll mill with the material conveying channel comprises a roll system, wherein the roll system comprises a shell, a grinding cavity is arranged in the shell, a material inlet and a press roll shaft inserting hole are formed in the grinding cavity, the material conveying channel is inserted into the material inlet, a press roll shaft is inserted into the press roll shaft inserting hole, one end, located in the grinding cavity, of the press roll shaft is rotatably connected with a grinding roll, and one end, located outside the grinding cavity, of the press roll shaft is connected with a lifting device through a press roll bracket;

a grinding disc is also arranged in the grinding cavity, a rotating system which can enable the grinding disc to rotate is arranged below the grinding disc,

the grinding disc material conveying device is characterized in that a material conveying channel is formed by connecting a first conveying pipeline and a second conveying pipeline, a discharge port of the first conveying pipeline is located above the middle of the grinding disc and is higher than the upper end face of the grinding roller, a feed port of the second conveying pipeline is connected with a discharge port of the first conveying pipeline, a discharge port of the second conveying pipeline is located above the middle of the grinding disc, and the distance between the second conveying pipeline and the grinding disc is not more than 5 cm. Thereby send the material to grinding chamber from the casing outward through first pipeline to reduce sheltering from to the grinding roller, then send the material furthest to the upper surface of mill through second pipeline, then along with the rotation of mill, under the effect of centrifugal force, move to the mill edge.

Preferably, the discharge hole of the second conveying pipeline is opposite to the grinding disc.

Further preferably, the outer diameter of the discharge port of the second conveying pipeline is gradually reduced from top to bottom. The outer diameter is gradually reduced from top to bottom, so that the blowing direction of the wind power conveying system can be effectively guided, and the situation that unground materials are directly blown up is avoided.

Preferably, the number of the grinding rollers is 1, and the material conveying channel and the grinding rollers are arranged oppositely. Thereby reducing the sheltering of the material conveying channel to the grinding roller and facilitating the maintenance and replacement of the grinding roller.

Preferably, the number of the grinding rollers is 3, and the material conveying channel is positioned between the two grinding rollers.

Further preferably, 3 grinding rollers are arranged in the grinding cavity at equal intervals, and the grinding cavity is surrounded into a ring shape by taking the central axis of the grinding cavity as the center.

Drawings

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

FIG. 2 is a schematic partial structure diagram of another structure of the present invention;

FIG. 3 is a schematic structural view of a second conveying pipeline;

fig. 4 is a partial schematic structural view of another structure of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further explained with reference to the specific drawings.

Referring to fig. 1, 2 and 4, the vertical superfine powder roller mill with the material conveying channel comprises a base 7, a rolling system, a wind conveying system for conveying the crushed material outwards and the like.

The roll-in system includes the casing, is equipped with the grinding chamber in the casing, is equipped with the material import on the grinding chamber, has inserted material transfer passage 4 on the material import, and material transfer passage 4's discharge gate preferred is located the middle part top of mill 1. Therefore, the material is sent to the center of the grinding disc 1, and after reaching the center of the grinding disc 1, the material moves to the edge of the grinding disc 1 under the action of centrifugal force along with the rotation of the grinding disc 1.

Still grind the chamber and go up the compression roller inserted hole, insert the compression roller axle 3 on the compression roller inserted hole, the rotatable grinding roller 2 that is connected with of one end that the compression roller axle 3 is located and grinds the intracavity, and the one end that the compression roller axle 3 is located and grinds the chamber is passed through the compression roller bracket and is connected elevating gear 6, and elevating gear 6's the other end is fixed on the base. One end of the compression roller shaft 3 is pulled to move up and down through the lifting device 6, so that the grinding roller 2 at the other end of the compression roller shaft 3 can move oppositely, the force application condition of the grinding roller 2 is changed, and the requirements of different material crushing precision are met. The method is suitable for the production of materials with the crushing fineness of 60-5500 meshes.

The grinding cavity is also internally provided with a grinding disc 1, a rotating system which can enable the grinding disc to rotate is arranged below the grinding disc 1, the upper surface of the grinding disc 1 is provided with an annular groove, and the grinding roller 2 is pressed on the annular groove. When the materials pass through the annular groove on the grinding disc 1, the materials are crushed by the grinding roller 2. The quenching hardness of the grinding roller 2 and the grinding disc 1 is 62 degrees, and the quenching thickness of the grinding roller 2 is 8mm-12 mm. This patent is through the selection to the structure of mill 1 to the selection to the material of grinding roller 2, mill 1 for this patent wearability is good, applicable in following material: artificial graphite, calcite, dolomite, granulated slag powder, coal, bentonite, talc, calcium carbonate, kaolin, ore, silicon micropowder, quartz, potash feldspar, silicon carbide, aluminum hydroxide, nonmetal ore and the like.

It is possible that the middle of the grinding disc 1 is convex upwards, as in fig. 1. Thereby the material can roll into the annular groove more quickly under the action of gravity. Further preferably, the height of the grinding disc 1 gradually decreases from the center to the bottom of the annular groove. So as to further reduce the resistance when the material rolls off. Also, the middle part of the grinding disc is a groove, and the groove is filled with a convex part 10 which is convex upwards, as shown in fig. 2. The protruding member 10 may be fixed to the grinding disc by means of bolts. The structure can ensure that the material can roll into the annular groove more quickly under the action of gravity. The grinding disc and the protruding piece can be separated, so that the protruding piece is allowed to be made of materials with low requirements on wear resistance, and the overall cost is reduced.

The grinding rollers 2 are preferably arranged in the grinding chamber at 3-5 intervals, and 3-5 grinding rollers are arranged in the grinding chamber at equal intervals and surround the central axis of the grinding chamber into a ring shape. By arranging 3-5 grinding rollers, the grinding efficiency can be effectively improved, and the output in unit time is increased. In the figure 1, the grinding roller 2 is 1, and the material conveying passage 4 and the grinding roller 2 are preferably arranged oppositely at the moment, so that the shielding of the material conveying passage 4 on the grinding roller 2 is reduced, and the maintenance and the replacement of the grinding roller 2 are convenient. In fig. 2 there are 3 grinding rollers 2, in which case the material feed channel 4 can be located between two grinding rollers 2. Further preferably, the material conveying channel is formed by connecting a first conveying pipeline and a second conveying pipeline, a discharge port of the first conveying pipeline is positioned above the middle part of the grinding disc 1 and is higher than the upper end face of the grinding roller 2, a feed port of the second conveying pipeline is connected with a discharge port of the first conveying pipeline, a discharge port 11 of the second conveying pipeline is positioned above the middle part of the grinding disc 1, and the distance from the grinding disc 1 is not more than 5 cm. Thereby send the material to grinding chamber from the casing outward through first pipeline to reduce sheltering from to grinding roller 2, then send the material furthest to the upper surface of mill 1 through second pipeline, avoid the material to be blown up by wind conveying system. The discharge opening 11 of the second conveying line preferably faces the grinding disc 1. It is further preferable that the outer diameter of the second conveying pipeline at the discharge port 11 is gradually reduced from top to bottom, as shown in fig. 3. The outer diameter is gradually reduced from top to bottom, so that the blowing direction of the wind power conveying system can be effectively guided, and the situation that unground materials are directly blown up is avoided.

In fig. 2, a grinding roller 2 is connected to a pressure roller shaft 3, and a pressure roller shaft 3 is connected to a lifting device. The lifting device can be an air pump, a hydraulic pump, a jack and the like. Of course, if there are two ring grooves, it is also possible to provide two grinding rollers 2 on one roll spindle 3, the two grinding rollers 2 being pressed in each case into two ring grooves.

The grinding roller 2 is drum-shaped, and the central axis of the grinding roller 2 preferably forms an acute angle with the inner wall of the grinding chamber. So that the grinding roller 2 is pressed obliquely in the annular groove and the grinding force is increased. Because the grinding roller 2 can change along with the pulling position of the lifting device, no matter the grinding roller is pulled to the highest position or the lowest position, the central axis of the grinding roller 2 forms an acute angle with the inner wall of the grinding chamber so as to ensure the grinding pressure. The acute angle is preferably 15 to 75 degrees.

As a scheme, referring to fig. 2, an annular partition plate is arranged in a grinding cavity, the grinding cavity is divided into an upper cavity and a lower cavity which are communicated with each other by the annular partition plate, a grinding disc is positioned in the lower cavity, and a gap is formed between the outer side wall of the grinding disc and the inner side wall of the lower cavity; the outer diameter of the grinding disc is larger than the inner diameter of the partition plate, and a labyrinth groove 9 is arranged between the lower end face of the partition plate and the upper end face of the grinding disc. Thereby avoiding the problem that the crushed material enters the lower cavity from the edge of the grinding disc to cause mechanical failure or increase energy consumption. Preferably, the lower end face of the partition plate is provided with a downward annular bulge, the upper end face of the grinding disc is provided with an annular groove matched with the annular bulge at a position corresponding to the annular bulge, and the annular bulge and the annular groove form a labyrinth groove. The structure can further increase the difficulty of the crushed material entering the lower cavity, and can effectively control the rotation resistance of the grinding disc and reduce the energy consumption.

As another scheme, the grinding cavity comprises an upper cavity body and a lower cavity body, wherein the upper cavity body is positioned above the grinding disc, the lower cavity body is used for accommodating the grinding disc, the grinding disc is positioned in the lower cavity body, and a gap is formed between the outer side wall of the grinding disc and the inner side wall of the lower cavity body; the outer diameter of the grinding disc is larger than the inner diameter of the upper cavity, and a labyrinth groove is arranged between the lower end face of the upper cavity and the upper end face of the grinding disc. Thereby avoiding the problem that the crushed material enters the lower cavity from the edge of the grinding disc to cause mechanical failure or increase energy consumption. As a preferred scheme, a downward annular bulge is arranged on the lower end face of the upper cavity, an annular groove matched with the annular bulge is arranged at the position, corresponding to the annular bulge, of the upper end face of the grinding disc, the annular bulge and the annular groove form a labyrinth groove, and the inner diameter of the outer side wall of the annular groove is not smaller than that of the upper cavity. The structure can further increase the difficulty of the crushed material entering the lower cavity, and can effectively control the rotation resistance of the grinding disc and reduce the energy consumption.

The wind power conveying system comprises an air inlet 8, a vacuum pump, a classifier 5 and a motor which are arranged on the shell. The classifier 5 is positioned right above the grinding disc, and the air inlet is positioned on the upper cavity. The material after smashing upward movement under the drive of air current, heavier material can descend and continue to smash on the mill, and lighter material continues to rise, through the further screening of grader 5, the product that reaches the fineness requirement passes through grader 5 and gets into the discharge gate, and the material that does not reach the fineness requirement descends and continues to smash on the mill, so relapse. Preferably, a bell-mouth-shaped cover body 12 is arranged between the grinding disc and the classifier 5, the opening of the cover body 12 from the grinding disc to the classifier 5 is larger and larger, and a through hole or a part of hollow is arranged on the side wall of the cover body 12. The cover body can block partial larger materials on one hand, and can guide the falling materials to reach the middle part of the grinding disc more on the other hand. It is further preferred that the part of the material transfer channel 4 located in the grinding chamber is located below the cover. Furthermore, the part of the material conveying channel 4 located in the grinding chamber is fixed to the casing. The cover body and the material conveying channel 4 are fixed, so that the firmness of the cover body can be effectively increased, and the mounting difficulty of the cover body is reduced. Those skilled in the art will generally appreciate that the addition of a cover increases the drag and, in turn, the power consumption of the motor. But actually, because the resistance is increased, the passing difficulty of larger particles can be reduced, the energy consumption of the classifier 5 is reduced, and the uniformity of the product is improved. And the structure of the cover body can also make turbulence be formed between the cover body and the grinding disc, thereby increasing the probability that particles pass through the grinding roller 2 for the second time, and being beneficial to improving the whole grinding efficiency and the grinding effect. What is more critical is that the height of the cover body and the grinding disc can be adjusted by adjusting the position of the cover body, and the position of the grinding roller 2 is limited by the cover body, so that the grinding pressure of the grinding roller 2 is increased.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that there can be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The vertical superfine powder roll mill with the material conveying channel comprises a roll system, wherein the roll system comprises a shell, a grinding cavity is arranged in the shell, a material inlet and a press roll shaft inserting hole are formed in the grinding cavity, the material conveying channel is inserted into the material inlet, a press roll shaft is inserted into the press roll shaft inserting hole, one end, located in the grinding cavity, of the press roll shaft is rotatably connected with a grinding roll, and one end, located outside the grinding cavity, of the press roll shaft is connected with a lifting device through a press roll bracket;

the grinding disc material conveying device is characterized in that a material conveying channel is formed by connecting a first conveying pipeline and a second conveying pipeline, a discharge port of the first conveying pipeline is located above the middle of the grinding disc and is higher than the upper end face of the grinding roller, a feed port of the second conveying pipeline is connected with a discharge port of the first conveying pipeline, and a discharge port of the second conveying pipeline is located above the middle of the grinding disc and is away from the grinding disc by a distance not more than 5 cm.

2. The vertical superfine powder roller mill with the material conveying channel as claimed in claim 1, wherein a discharge port of the second conveying pipeline faces a grinding disc.

3. The vertical superfine powder roller mill with the material conveying channel as claimed in claim 1, wherein the outer diameter of the discharge port of the second conveying pipeline is gradually reduced from top to bottom.

4. The vertical superfine powder roller mill with the material conveying channel as claimed in claim 1, wherein the number of the grinding rollers is 1, and the material conveying channel and the grinding rollers are arranged oppositely.

5. The vertical ultra-fine powder roller mill with the material conveying channel as claimed in claim 1, wherein the number of the grinding rollers is 3, and the material conveying channel is located between two grinding rollers.

6. The vertical superfine powder roller mill with the material conveying channel as claimed in claim 5, wherein 3 grinding rollers are arranged in the grinding cavity at equal intervals and form a ring shape by taking the central axis of the grinding cavity as the center.