Vertical stirring mill

Abstract

The utility model discloses a vertical stirring mill, and belongs to the technical field of mills, the vertical stirring mill comprises a mill body, the mill body comprises: an open cylinder comprising a variable frequency motor; the stirring shaft is connected with the variable frequency motor; the grinding disc is connected with the stirring shaft; a grading chamber; the upper end cover is connected with the open cylinder; the lower end cover is connected with the open cylinder; a material inlet; a discharge port; wherein the feeding port is arranged below the open type cylinder body, the discharging port is arranged above the open type cylinder body, and grading cavities are arranged on two sides of the grinding disc. The utility model provides a vertical stirring mill, which adopts an open cylinder structure, simplifies the internal structure, reduces the energy consumption generated when the equipment is started, is convenient for workers to maintain, and enables the mill to run stably.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mills, and particularly relates to a vertical stirring mill. BACKGROUND

[0002] Mills are widely used for grinding and superfine grinding of various solid materials in the cement, building material, electric power, metallurgy, chemical industry, non-metallic mineral and other industries, and are generally completed by a set of grinding devices (i.e. grinding roller and grinding disc).

[0003] The existing Chinese patent with the publication number CN113399058B discloses a high-efficiency vertical dry-type stirring mill and application thereof. The mill comprises a shell, a screw feeder, a grinding cylinder, a main shaft, a stirrer, an activation lining plate, a discharge device, a driving device, a powder classifier, and an air supply device. The powder classifier, the screw feeder, the grinding cylinder, the discharge device, and the driving device are sequentially arranged in the shell from top to bottom. The coarse particle return pipe of the powder classifier and the discharge end of the screw feeder are both in communication with the top of the grinding cylinder. The main shaft and the stirrer are arranged in the grinding cylinder. The stirrer is fixed on the main shaft. The activation lining plate is arranged on the inner wall of the grinding cylinder. The discharge device is arranged at the bottom of the grinding cylinder and is fixed on the main shaft. The bottom of the main shaft is connected with the driving device. The space between the grinding cylinder and the shell forms an annular air chamber. The air supply device is arranged below the discharge device and faces the annular air chamber.

[0004] The above-mentioned mill has high grinding efficiency, good finished product separation effect, no over-grinding phenomenon, good heat dissipation, accurate product fineness control, reduced energy consumption, and improved equipment reliability and stability. However, the internal structure of the mill is relatively complex, a large amount of energy is required to start the equipment, and it is difficult to identify the faulty parts when the equipment body has a problem, which is not convenient for maintenance. Content of the utility model

[0005] The application aims to solve the above-mentioned technical problems, and provides a vertical stirring mill which adopts an open-type cylinder structure, simplifies the internal structure, reduces the energy consumption generated when starting the equipment, is convenient for maintenance by workers, and enables the mill to run smoothly.

[0006] The application provides a vertical stirring mill, which comprises a mill body, wherein the mill body comprises:

[0007] an open-type cylinder, a variable frequency motor, a stirring shaft, a grinding disc, a grading chamber, an upper end cover, and a lower end cover.

[0008] The stirring shaft is connected between the variable frequency motor.

[0009] The grinding disc is connected between the stirring shaft.

[0010] The grading chamber is connected between the grinding disc.

[0011] The upper end cover is connected between the open-type cylinder.

[0012] a lower end cover connected with the open cylinder;

[0013] a feeding port;

[0014] a discharging port;

[0015] The feeding port is arranged below the open cylinder, the discharging port is arranged above the open cylinder, and both sides of the grinding disc are the classification cavities.

[0016] In the technical scheme, the cylinder in the mill body is arranged as an open cylinder, which simplifies the internal structure of the mill body, reduces components prone to faults, and reduces costs, while reducing the failure rate of equipment operation, facilitating maintenance, and conveniently arranging a vertical structure, reducing the floor area, saving space costs, and enabling the stirring shaft to be longer, facilitating the installation of more stirring discs, and improving the grinding efficiency. The material continuously runs in the open cylinder without circulation load, and the mill can reach the target product particle size in a single pass, saving the total installation capital expenditure cost. The grinding medium is discharged from the emptying port below the cylinder without disassembling the cylinder. The stirring shaft is connected with the variable frequency motor, and the grinding disc is connected with the stirring shaft. When the mill body performs the grinding work, the material is fed into the lower part of the open cylinder, and the variable frequency motor is controlled to rotate, which drives the stirring shaft and the grinding disc to rotate, facilitating the continuous grinding of the material by the grinding disc. The classification cavities on both sides of the grinding disc enable larger particles in the material to be transported to the lower part under the action of centrifugal force, facilitating high-strength grinding, and smaller particles move upward to the next classification cavity, preventing overgrinding and improving the grinding effect of the mill body. After the material is classified and ground, it is discharged from the discharging port, and the grinding work is completed.

[0017] Further, the mill body is further provided with an air explosion machine and an air explosion port.

[0018] The air explosion port is arranged below the open cylinder, and the air explosion machine is connected with the air explosion port.

[0019] In the technical scheme, the air explosion machine and the air explosion port are arranged at the mill body, the air explosion port is arranged below the open cylinder, and the air explosion machine is connected with the air explosion port. When the mill body starts, compressed air is connected to the air explosion machine, which can effectively loosen the grinding medium and the material, facilitating the rotation of the stirring shaft driven by the variable frequency motor in the starting stage, and improving the grinding efficiency of the mill body.

[0020] Further, the bottom end of the stirring shaft is in a semispherical shape.

[0021] The lower end cover is provided with a spherical groove.

[0022] In the technical solution, the bottom end of the stirring shaft is in the form of a hemisphere, and a spherical groove is arranged at the lower end cover, the bottom end of the hemisphere is tightly fitted with the spherical groove, the stirring shaft is conveniently rotated in the open cylinder, and the grinding efficiency of the mill body is improved.

[0023] Further, the stirring shaft is provided with twelve grinding discs.

[0024] In the technical solution, the open cylinder is conveniently divided into thirteen grading cavities along the twelve grinding discs, the material is discharged from the discharge port after grading and grinding through the thirteen grading cavities, the material does not need to be classified and recycled at this time, the work process is reduced, the energy consumption is reduced, and the energy-saving effect of the mill body is improved.

[0025] Further, the upper end cover is provided with a material guiding cavity.

[0026] The material guiding cavity is connected between the material guiding cavity and the discharge port.

[0027] In the technical solution, the material guiding cavity is arranged in the upper end cover, the material enters the material guiding cavity after the grinding of the mill body, the material guiding cavity can temporarily store the material, the material can be smoothly discharged from the discharge port, and the discharging efficiency of the mill body is improved.

[0028] Further, the grinding disc is provided with a sawtooth-shaped protrusion.

[0029] In the technical solution, the sawtooth-shaped protrusion is arranged in the grinding disc, the grinding beads on the surface of the grinding disc rotate at the same speed as the grinding disc in the process of rotating the grinding disc, thereby reducing the wear of the grinding disc caused by the speed difference between the grinding beads and the grinding disc, and prolonging the maintenance period of the grinding disc.

[0030] The beneficial effects of the present application are:

[0031] 1. The open cylinder simplifies the internal structure of the mill body, reduces the components prone to failure, reduces the cost, reduces the failure rate of the equipment operation, facilitates maintenance, and the open cylinder is conveniently arranged in a vertical type, reduces the floor area, and saves the space cost.

[0032] 2. The variable frequency motor drives the stirring shaft and the grinding disc to rotate, the grinding disc continuously grinds the material, the two sides of the grinding disc are grading cavities, the larger particles in the material are transported to the lower side under the action of the centrifugal force, the grinding is conveniently performed at high strength, the smaller particles move upward to the next grading cavity, the overgrinding is prevented, and the grinding effect of the mill body is improved.

[0033] 3. When the mill body starts to start, the compressed air is connected to the air explosion machine, which can effectively loosen the grinding medium and the material, and facilitate the variable frequency motor to drive the stirring shaft to rotate in the starting stage, thereby improving the grinding efficiency of the mill body. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 Fig. 1 is a structural schematic diagram of a vertical stirring mill according to the present application;

[0035] Figure 2 Fig. 2 is an enlarged view of A in Fig. 1; Figure 1

[0036] Figure 3 Fig. 3 is a structural schematic diagram of a grinding disc;

[0037] Figure 4 Fig. 4 is a structural schematic diagram of a cross section of the grinding disc;

[0038] In the drawings, 100, mill body; 110, grading cavity; 120, upper end cover; 121, material guiding cavity; 130, lower end cover; 131, ball-shaped groove; 140, feeding port; 150, discharging port; 160, air explosion machine; 170, air explosion port; 200, open cylinder; 210, variable frequency motor; 300, stirring shaft; 400, grinding disc; 410, sawtooth-shaped protrusion. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0040] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents a "or" relationship between the front and rear associated objects.

[0041] The embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments and their application scenarios.

[0042] Embodiment 1:

[0043] As Figures 1-4 ​As shown, the embodiment of the present application provides a vertical stirring mill, which comprises a mill body 100, wherein the mill body 100 comprises:

[0044] An open barrel 200, which comprises a variable frequency motor 210;

[0045] A stirring shaft 300, which is connected between the variable frequency motor 210;

[0046] A grinding disc 400, which is connected between the stirring shaft 300;

[0047] A classification cavity 110;

[0048] An upper end cover 120, which is connected between the open barrel 200;

[0049] A lower end cover 130, which is connected between the open barrel 200;

[0050] A feeding port 140;

[0051] A discharging port 150;

[0052] Wherein, the feeding port 140 is arranged below the open barrel 200, the discharging port 150 is arranged above the open barrel 200, and both sides of the grinding disc 400 are the classification cavities 110.

[0053] By setting the barrel in the mill body 100 as the open barrel 200, the open barrel 200 simplifies the internal structure of the mill body 100, reduces the components prone to failure, reduces the cost, and reduces the failure rate of the equipment operation, which is convenient for maintenance. The open barrel 200 is convenient to set up vertically, reduces the floor area, saves the space cost, and the stirring shaft 300 can be long, which is convenient for installing more stirring discs, improves the grinding efficiency, and the material continuously runs in the open barrel 200 without circulating load. The mill can reach the target product particle size in the open single pass, saves the total installation capital expenditure cost, there is a vent in the lower part of the barrel, the grinding medium is discharged from the vent, the barrel does not need to be disassembled, the stirring shaft 300 is connected between the variable frequency motor 210, the grinding disc 400 is connected between the stirring shaft 300, when the mill body 100 performs the grinding work, the material is put into the lower part of the open barrel 200, and the variable frequency motor 210 is controlled to rotate. The variable frequency motor 210 drives the stirring shaft 300 and the grinding disc 400 to rotate, which is convenient for the grinding disc 400 to continuously grind the material. The two sides of the grinding disc 400 are the classification cavities 110, so that the larger particles in the material are transported to the lower part under the action of the centrifugal force, which is convenient for high-intensity grinding, and the smaller particles move upward to the next classification cavity 110, which prevents over-grinding and improves the grinding effect of the mill body 100. After the material is classified and ground, it is discharged from the discharging port 150, and the grinding work is completed.

[0054] Further, the mill body 100 is further provided with an air explosion machine 160 and an air explosion port 170.

[0055] The air explosion port 170 is arranged below the open cylinder 200, and the air explosion machine 160 is connected with the air explosion port 170.

[0056] By arranging the air explosion machine 160 and the air explosion port 170 at the mill body 100, and arranging the air explosion port 170 below the open cylinder 200 and connecting the air explosion machine 160 with the air explosion port 170, when the mill body 100 starts to start, the compressed air is connected into the air explosion machine 160, which can effectively loosen the grinding medium and the material, and facilitate the variable frequency motor 210 to drive the stirring shaft 300 to rotate in the starting stage, and improve the grinding efficiency of the mill body 100.

[0057] Further, the bottom end of the stirring shaft 300 is in a hemispherical shape.

[0058] The lower end cover 130 is provided with a spherical groove 131.

[0059] By arranging the bottom end of the stirring shaft 300 in a hemispherical shape, and arranging the spherical groove 131 at the lower end cover 130, and tightly fitting the hemispherical bottom end with the spherical groove 131, the stirring shaft 300 is facilitated to rotate in the open cylinder 200, and the grinding efficiency of the mill body 100 is improved.

[0060] Embodiment 2:

[0061] As shown in the Figures 1-4 The embodiment of the application provides a vertical stirring mill, in addition to the technical solutions of the above embodiments, further having the following technical features. The stirring shaft 300 is provided with twelve grinding discs 400.

[0062] By arranging the stirring shaft 300 with twelve grinding discs 400, the open cylinder 200 is facilitated to be divided into thirteen grading cavities 110 along the twelve grinding discs 400, and the material is discharged from the discharge port 150 after grading and grinding through the thirteen grading cavities 110, at this time, the material does not need to be classified and recycled, which reduces the work flow and reduces energy consumption, and improves the energy saving effect of the mill body 100.

[0063] Further, the upper end cover 120 is provided with a material guiding cavity 121.

[0064] The material guiding cavity 121 is connected with the discharge port 150.

[0065] By arranging the material guiding cavity 121 in the upper end cover 120, after the mill body 100 completes the grinding work, the material enters the material guiding cavity 121, the material guiding cavity 121 can temporarily store the material, so that the discharge port 150 can stably output the material, and the discharge efficiency of the mill body 100 is improved.

[0066] Further, the grinding disc 400 is provided with serrated protrusions 410.

[0067] By providing the serrated protrusions 410 in the grinding disc 400, the grinding beads on the surface of the grinding disc 400 can rotate at the same speed as the grinding disc 400 during the rotation of the grinding disc 400, thereby reducing the wear of the grinding disc 400 caused by the speed difference between the grinding beads and the grinding disc 400, and prolonging the maintenance period of the grinding disc 400.

[0068] It should be noted that, in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described methods can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the specific embodiments described above, which are only illustrative and not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims, which are all within the scope of protection of the present application.

Claims

1. A vertical agitator mill comprising a mill body (100), characterized in that, The mill body (100) comprises: An open cylinder (200) comprising a variable frequency motor (210); A stirring shaft (300) connected with the variable frequency motor (210); A grinding disc (400) connected with the stirring shaft (300); A classification cavity (110); An upper end cover (120) connected with the open cylinder (200); A lower end cover (130) connected with the open cylinder (200); A feeding port (140); A discharging port (150); Wherein, the feeding port (140) is placed below the open cylinder (200), the discharging port (150) is placed above the open cylinder (200), and both sides of the grinding disc (400) are the classification cavities (110).

2. A vertical agitator mill according to claim 1, characterized in that The mill body (100) is further provided with an air explosion machine (160) and an air explosion port (170); Wherein, the air explosion port (170) is placed below the open cylinder (200), and the air explosion machine (160) is connected with the air explosion port (170).

3. A vertical agitator mill according to claim 2, characterized in that The bottom end of the stirring shaft (300) is in a semispherical shape. Wherein, the lower end cover (130) is provided with a spherical groove (131).

4. A vertical agitator mill according to claim 3, characterized in that The stirring shaft (300) is provided with twelve grinding discs (400).

5. A vertical agitator mill according to claim 4, characterized in that The upper end cover (120) is provided with a material guiding cavity (121); Wherein, the material guiding cavity (121) is connected with the discharging port (150).

6. A vertical agitator mill according to claim 5, characterized in that The grinding disc (400) is provided with a sawtooth-shaped protrusion (410).

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