Vertical roller flour mill

Abstract

The utility model relates to a vertical roller flour mill which comprises a roller flour mill main machine consisting of an upper machine body and a lower machine body, a main shaft component positioned in the lower machine body and a power mechanism for driving the main shaft component to rotate, the main shaft component comprises a main shaft, an airflow shunting center disc capable of synchronously rotating along with the main shaft, a wear-resistant curve large ring, a center disc mounting seat and a lower air inlet duct, the airflow shunting center disc is mounted on the center disc mounting seat, the center disc mounting seat is mounted on the main shaft, and the lower end of the center disc mounting seat and the lower air inlet duct are mounted together; the wear-resistant curve large ring is mounted on the central disc mounting seat; an air duct is mounted on the upper machine body, and after external airflow enters the lower machine body through the air duct, most airflow blows fine powder into the upper machine body; the utility model has the advantages of reasonable structure, simple and convenient operation, double gas circuit structure, lower end gas inlet to avoid material accumulation, high efficiency and energy saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding mills, and in particular relates to a vertical roller grinding mill. Background Art

[0002] With the rapid development of materials science and industrial manufacturing, the demand for ultrafine powder materials is increasing. Ultrafine powder materials have a wide range of applications in many fields, such as material preparation, chemical industry, pharmaceuticals, energy, electronics, etc.; ultrafine calcium carbonate powder is widely used as an additive in PVC products, rubber products, coatings, dyes and colorants and other products; ultrafine grinding mill is a kind of high-efficiency grinding equipment specially used for grinding materials into ultrafine particles in the production process of ultrafine powder materials, so as to meet their special physical and chemical properties. At present, the mainstream grinding mills in China include vertical grinding mills and Raymond mills, and vertical grinding mills can be divided into two types: the grinding disc is flat and the grinding head is placed horizontally on the grinding disc; the grinding disc is conical and the grinding head is inclined. Placed on the grinding disc; for these two types of vertical grinding mills, since the lower part of the grinding disc is solid, the airflow from the main machine can only flow through the annular gap between the grinding disc and the cylinder wall, causing some materials (including unmilled powders, finished products and semi-finished products) to accumulate on the grinding disc and be repeatedly ground, and some materials that have been powdered cannot enter the classifier from the main machine for classification and discharge in time; although the Raymond mill does not have the above phenomenon, due to the small pressure between the grinding roller and the grinding disc, the grinding effect is not good, resulting in low production efficiency, high energy consumption, unstable product quality and other problems; therefore, it is very necessary to provide a vertical roller grinding mill with reasonable structure, easy operation, dual air path structure, lower end air intake to avoid material accumulation, and high efficiency and energy saving. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a vertical roller mill with reasonable structure, simple operation, double air path structure, lower end air intake to avoid material accumulation, high efficiency and energy saving.

[0004] The purpose of the utility model is achieved as follows: a vertical roller mill, which includes a roller mill main machine composed of an upper body and a lower body, a main shaft component located in the lower body and a power mechanism for driving the main shaft component to rotate,

[0005] a. The spindle component includes a spindle, an airflow splitting center disk that can rotate synchronously with the spindle, a center disk mounting seat, and a lower air intake duct. The airflow splitting center disk is mounted on the center disk mounting seat, the center disk mounting seat is mounted on the spindle, and its lower end is mounted together with the lower air intake duct; the wear-resistant curved large ring is mounted on the center disk mounting seat;

[0006] b. An air duct is installed on the lower body. After the external airflow enters the lower body through the air duct, most of the airflow blows the fine powder into the upper body.

[0007] The airflow splitting center disk is provided with a plurality of grooves.

[0008] A plurality of holes are provided at the lower part of the center disk mounting seat.

[0009] The lower air inlet duct is arranged with a plurality of blades.

[0010] The power mechanism includes a motor and a reducer installed on a large base, and the motor and the reducer are connected through a second coupling to form a primary transmission structure; the reducer is connected to the main shaft component through a first coupling to form a secondary transmission structure.

[0011] The spindle component is located in the lower body and the spindle component and the lower body are installed on the base at the same time; the wear-resistant curved large ring at the upper end of the spindle component contacts the grinding head of the grinding head component.

[0012] The grinding head component is installed on the grinding head flip component, the grinding head flip component is installed on the upper side seat, the upper side seat is installed on the side lower seat, the side lower seat is installed on the base, and the base is installed on the large base.

[0013] The upper body is also provided with an oil cylinder, which pushes the grinding head flipping component outwards through the oil cylinder piston rod, thereby pressing the grinding head at the lower end of the grinding head component onto the wear-resistant ring at the upper end of the spindle component.

[0014] The vertical roller mill also includes a bottom discharge screw installed on the base, and the upper end feed port of the bottom discharge screw is aligned with the discharge hole on the base.

[0015] The beneficial effects of the utility model are as follows: the utility model is a vertical roller grinding mill. During use, after the external airflow enters the lower body through the air duct, most of the airflow blows the fine powder into the upper body (forming a structure for air intake from the outer edge of the grinding disc and the wall of the lower body), and after the other part of the airflow enters the mounting hole of the center disc through the lower air intake duct (forming a structure for air intake from the inner edge of the grinding disc), it flows out from the groove of the airflow diversion center disc and enters between the wear-resistant curved large ring and the grinding head, thereby blowing away the material accumulated between the grinding head and the wear-resistant curved large ring in time, and the fine powder enters the upper body with the airflow, while a part of the coarse material is thrown out with the wear-resistant curved large ring from between the grinding disc and the wall of the lower body into the bottom of the lower body, and another part of the coarse material falls from the above-mentioned air intake structure and enters the bottom of the lower body from the lower air intake duct. The two parts of coarse materials are conveyed to the feeding structure through the discharging screw and mixed with the original materials to enter the grinding again. Compared with the traditional vertical grinding mill, the airflow coming from the main machine can only flow through the annular gap between the grinding disc and the cylinder wall. The utility model adopts a double air path structure, which effectively avoids the problem that some materials (including unground powder, finished products and semi-finished products) are piled up on the grinding disc and repeatedly ground, and some materials that have been powdered cannot enter the classifier from the grinding disc for classification and discharging in time, which greatly improves the grinding effect, improves production efficiency and product quality, strengthens the control of material particles, realizes finer and more uniform particle distribution, and meets the needs of industry and scientific research fields for ultrafine powder materials; the utility model has the advantages of reasonable structure, simple operation, double air path structure, lower end air intake to avoid material accumulation, high efficiency and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the roller grinding main machine of the vertical roller grinding machine of the utility model.

[0017] Figure 2 It is a front view of the main shaft component of the vertical roller grinding mill of the utility model.

[0018] Figure 3 The utility model is a top view of the main shaft component of the vertical roller grinding mill.

[0019] Figure 4 It is an axonometric sectional view of the main shaft component of the vertical roller grinding mill of the utility model.

[0020] In the figure: 1, large base 2, bottom discharge screw 3, base 4, lower body 5, side lower seat 6, upper side seat 7, grinding head flip part 8, oil cylinder 9, air duct 10, grinding head part 11, upper body 12, main shaft part 13, first coupling 14, reducer 15, second coupling 16, motor 121, air flow diversion center disk 122, wear-resistant curved large ring 123, main shaft 124, center disk mounting seat 125, lower air intake duct. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. Example

[0022] like Figure 1-4 As shown, the vertical roller mill comprises a roller mill main body composed of an upper body and a lower body, a main shaft component located in the lower body, and a power mechanism for driving the main shaft component to rotate.

[0023] a. The spindle component includes a spindle, an airflow splitting center disk that can rotate synchronously with the spindle, a center disk mounting seat, and a lower air intake duct. The airflow splitting center disk is mounted on the center disk mounting seat, the center disk mounting seat is mounted on the spindle, and its lower end is mounted together with the lower air intake duct; the wear-resistant curved large ring is mounted on the center disk mounting seat;

[0024] b. An air duct is installed on the lower body. After the external airflow enters the lower body through the air duct, most of the airflow blows the fine powder into the upper body.

[0025] The utility model is a vertical roller mill. The utility model utilizes a vertical, double air path, high-speed three grinding rollers and a grinding disc diameter parameter of φ1400 to improve and optimize the grinding structure, improve production efficiency and product quality, fill the technical gap of ultra-fine powder material production equipment at home and abroad, and promote the progress of material science and industrial manufacturing. In use, after the external airflow enters the lower machine body 4 through the air duct 9, most of the airflow blows the fine powder into the upper machine body 11 (forming a structure of air intake from the outer edge of the grinding disc and the lower machine body cylinder wall), and the other part of the airflow enters the center disc mounting seat 124 hole through the lower air intake duct 125 (forming a structure of air intake from the inner edge of the grinding disc), and then flows out from the groove of the airflow diversion center disc 121, enters between the wear-resistant curved large ring 122 and the grinding head, thereby separating the grinding head and the wear-resistant The materials accumulated between the large ring 122 of the grinding curve are blown away in time, and some materials are ground again. Compared with the traditional vertical grinding mill airflow structure: the airflow coming from the main machine can only flow from the annular gap between the grinding disc and the cylinder wall. The utility model adopts a double air path structure, which effectively avoids some materials (including unground powder, finished products and semi-finished products) being repeatedly ground on the grinding disc, and some materials that have been powdered cannot enter the classifier from the grinding disc for classification and discharge in time, which greatly improves the grinding effect, improves production efficiency and product quality, strengthens the control of material particles, and realizes finer and more uniform particle distribution, meeting the needs of industry and scientific research for ultrafine powder materials; the utility model has the advantages of reasonable structure, simple operation, double air path structure, lower end air intake to avoid accumulation of materials, and high efficiency and energy saving. Example

[0026] like Figure 1-4 As shown, the vertical roller mill comprises a roller mill main body composed of an upper body 11 and a lower body 4, a main shaft component 12 located in the lower body 4 and a power mechanism for driving the main shaft component 12 to rotate.

[0027] a. The spindle component 12 includes a spindle 123, an airflow splitting center disk 121 that can rotate synchronously with the spindle 123, a center disk mounting seat 124, and a lower air intake duct 125. The airflow splitting center disk 121 is mounted on the center disk mounting seat 124, and the center disk mounting seat 124 is mounted on the spindle 123, and its lower end is mounted together with the lower air intake duct 125; the wear-resistant curved large ring 122 is mounted on the center disk mounting seat 124;

[0028] b. An air duct 9 is installed on the lower body 4. After the external airflow passes through the air duct 9 and enters the lower body 4, most of the airflow blows the fine powder into the upper body 11.

[0029] The airflow splitting center plate 121 is provided with a plurality of grooves.

[0030] The center plate mounting seat 124 has a plurality of holes at its lower portion.

[0031] The lower air inlet duct 125 is provided with a plurality of blades.

[0032] In this embodiment, in actual use, the lower air intake duct may be provided with blades or may not be provided with blades.

[0033] The power mechanism includes a motor 16 and a reducer 14 installed on the large base 1, and the motor 16 and the reducer 14 are connected through a second coupling 15 to form a primary transmission structure; the reducer 14 is connected to the main shaft component 12 through a first coupling 13 to form a secondary transmission structure.

[0034] The spindle component 12 is located in the lower body 4 and the spindle component 12 and the lower body 4 are simultaneously mounted on the base 3 ; the wear-resistant curved large ring 122 at the upper end of the spindle component 12 contacts the grinding head of the grinding head component 10 .

[0035] The grinding head component 10 is installed on the grinding head flip component 7, the grinding head flip component 7 is installed on the upper side seat 6, the upper side seat 6 is installed on the side lower seat 5, the side lower seat 5 is installed on the base 3, and the base 3 is installed on the large base 1.

[0036] The upper body 11 is also provided with an oil cylinder 8 , which pushes the grinding head flipping component 7 outwards through the oil cylinder piston rod, thereby pressing the grinding head at the lower end of the grinding head component 10 onto the wear-resistant ring at the upper end of the spindle component 12 .

[0037] The vertical roller grinding mill further comprises a bottom discharge screw 2 mounted on the base 3 , and an upper feed port of the bottom discharge screw 2 is aligned with a discharge hole on the base 3 .

[0038] In this embodiment, the upper feed port of the bottom discharge screw is aligned with the discharge hole on the base. After the coarse powder and granular material fall into the lower body, they enter the bottom discharge screw through the discharge hole on the base, and are transported to the feed port of the grinding mill by the discharge screw to mix with the original material, and then enter the grinding mill again for secondary grinding.

[0039] The utility model is a vertical roller mill. In use, after the external airflow enters the lower body 4 through the air duct 9, most of the airflow blows the fine powder into the upper body 11 (forming a structure for air intake from the outer edge of the grinding disc and the wall of the lower body), and the other part of the airflow enters the hole 124 of the center disc mounting seat through the lower air intake duct 125 (forming a structure for air intake from the inner edge of the grinding disc), and then flows out from the groove of the airflow diversion center disc 121, and enters between the wear-resistant curved large ring 122 and the grinding head, so that the material accumulated between the grinding head and the wear-resistant curved large ring 122 is blown away in time, and part of the material is ground again. Compared with the traditional vertical mill airflow structure, the utility model :The airflow coming from the main machine can only flow through the annular gap between the grinding disc and the cylinder wall. The utility model adopts a double air path structure, which effectively avoids the problem that some materials (including unground powders, finished products and semi-finished products) are piled up on the grinding disc and repeatedly ground, and some materials that have been powdered cannot enter the classifier from the grinding disc for classification and discharge in time. The grinding effect is greatly improved, the production efficiency and product quality are improved, the control of material particles is strengthened, and a finer and more uniform particle distribution is achieved, meeting the needs of industry and scientific research for ultrafine powder materials. The utility model has the advantages of reasonable structure, simple operation, double air path structure, lower end air intake to avoid material accumulation, and high efficiency and energy saving.

Claims

1. A vertical roller mill, comprising a roller mill main body composed of an upper body and a lower body, a main shaft component located in the lower body, and a power mechanism for driving the main shaft component to rotate, characterized in that: The spindle component includes a spindle, an airflow splitting center disk that can rotate synchronously with the spindle, a center disk mounting seat, and a lower air intake duct. The airflow splitting center disk is mounted on the center disk mounting seat, and the center disk mounting seat is mounted on the spindle, and its lower end is mounted together with the lower air intake duct; a wear-resistant curved large ring is installed on the center disk mounting seat; An air duct is installed on the lower body. After the external air flow enters the lower body through the air duct, the air flow blows the fine powder into the upper body.

2. The vertical roller grinding mill according to claim 1, characterized in that: The airflow splitting center disk is provided with a groove.

3. The vertical roller grinding mill according to claim 2, characterized in that: A hole is formed at the lower part of the center disk mounting seat.

4. The vertical roller grinding mill according to claim 3, characterized in that: The lower air inlet duct is arranged with blades.

5. The vertical roller grinding mill according to claim 1, characterized in that: The power mechanism includes a motor and a reducer installed on a large base, and the motor and the reducer are connected through a second coupling to form a primary transmission structure; the reducer is connected to the main shaft component through a first coupling to form a secondary transmission structure.

6. The vertical roller grinding mill according to claim 5, characterized in that: The spindle component is located in the lower body and the spindle component and the lower body are installed on the base at the same time; the wear-resistant curved large ring at the upper end of the spindle component is in contact with the grinding head of the grinding head component.

7. The vertical roller grinding mill according to claim 6, characterized in that: The grinding head component is installed on the grinding head flip component, the grinding head flip component is installed on the upper side seat, the upper side seat is installed on the side lower seat, the side lower seat is installed on the base, and the base is installed on the large base.

8. The vertical roller grinding mill according to claim 7, characterized in that: The upper body is also provided with an oil cylinder, which pushes the grinding head flipping component outwards through the oil cylinder piston rod, thereby pressing the grinding head at the lower end of the grinding head component onto the wear-resistant ring at the upper end of the spindle component.

9. The vertical roller grinding mill according to claim 6, characterized in that: It also includes a bottom discharge screw installed on the base, and the upper end feed port of the bottom discharge screw is aligned with the discharge hole on the base.

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