A vertical mill wear-resistant roller sleeve

Abstract

This utility model relates to the field of vertical mill roller sleeve technology. It provides a wear-resistant roller sleeve for a vertical mill, comprising a roller sleeve body, a reinforcing layer fixedly installed on the upper outer side of the roller sleeve body, an inner cavity fixedly opened inside the roller sleeve body, a first insertion block fixedly connected inside the inner cavity, and a second insertion block fixedly connected to the right side of the first insertion block. An expansion ring is fixedly installed at the front end of the second insertion block, and an installation block is fixedly installed at the front end of the expansion ring. A cylinder is fixedly installed at the front end of the installation block. This invention solves the technical problems of traditional vertical mill roller sleeve installation, where the roller sleeve is fixed to the grinding roller with screws, resulting in long maintenance time during disassembly and replacement due to roller sleeve wear, leading to increased downtime and reduced production continuity. Furthermore, the roller sleeve is in direct contact with the material during use, and prolonged contact with hard materials can easily damage the roller sleeve, reducing its lifespan and increasing production costs.

Description

Technical Field

[0001] This utility model relates to the field of vertical mill roller sleeve technology, specifically to a wear-resistant roller sleeve for a vertical mill. Background Technology

[0002] The vertical mill roller sleeve is a key component of the vertical mill, mainly installed on the grinding rollers, used for crushing and grinding materials. The working principle of the vertical mill is to crush materials to the required fineness through the interaction of the grinding disc and the grinding rollers. Specifically, the motor drives the grinding disc to rotate through the reducer, and the grinding rollers rotate on it. The material is clamped between the grinding rollers and the grinding disc, and subjected to compression and shearing forces, thereby achieving the effect of crushing and grinding.

[0003] When using a vertical mill, a roller sleeve is installed on the grinding roller. The original vertical mill roller sleeve was installed by fixing the roller sleeve to the grinding roller with screws. This caused the roller sleeve to wear out, and the maintenance time for disassembly and replacement was long, resulting in longer downtime and reduced production continuity. When using the vertical mill roller sleeve, the roller sleeve is in direct contact with the material. When the roller sleeve is in contact with hard materials for a long time, it is easily damaged, resulting in a reduced roller sleeve life and increased production costs. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a wear-resistant roller sleeve for vertical mills. It solves the technical problems of the original vertical mill roller sleeve, which was fixed to the grinding roller with screws, resulting in long maintenance time when the roller sleeve was worn and disassembled for replacement, causing longer downtime and reducing production continuity. When using the vertical mill roller sleeve, the roller sleeve is in direct contact with the material. When the roller sleeve is in contact with hard materials for a long time, it is easily damaged, resulting in a reduced roller sleeve life and increased production costs.

[0005] According to one aspect, at least one embodiment of the present invention provides a wear-resistant roller sleeve for a vertical mill, comprising: a roller sleeve body, a reinforcing layer fixedly installed on the outer side of the upper end of the roller sleeve body, an inner cavity fixedly opened inside the roller sleeve body, a first insertion block fixedly connected inside the inner cavity, and a second insertion block fixedly connected to the right side of the first insertion block, an expansion ring fixedly installed at the front end of the second insertion block, and an installation block fixedly installed at the front end of the expansion ring.

[0006] A cylinder is fixedly installed at the front end of the mounting block. A piston rod is fixedly connected inside the cylinder. A delivery pipe is fixedly installed at the upper end of the cylinder, and an oil pump is fixedly installed on the left side of the delivery pipe. An oil pressure sensor is fixedly installed at the upper end of the oil pump.

[0007] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: oil injection holes are fixedly opened on both sides of the upper end of the roller sleeve body, a vent hole is fixedly opened on the inner side of the oil injection hole, and a grinding roller body is fixedly connected to the inner side of the vent hole by a connecting ring; a first mounting groove is fixedly opened at the upper end of the grinding roller body, and a first fixing groove is fixedly opened inside the first mounting groove; a second mounting groove is fixedly opened on the right side of the first mounting groove, and a second fixing groove is fixedly opened inside the second mounting groove.

[0008] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: the upper end of the reinforcing layer is wavy, the upper end structure of the first insertion block and the second insertion block is the same, the first insertion block and the first fixing groove are interlocked, and the second insertion block and the second fixing groove are interlocked.

[0009] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: the second insertion block and the second mounting groove are connected by an interlocking connection; the cylinder is symmetrically installed on the left and right sides of the conveying pipe with the conveying pipe as the central reference; and the mounting block slides in the inner cavity by a piston.

[0010] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: the oil injection hole is symmetrically installed on the front and rear sides of the roller sleeve body with the roller sleeve body as the center reference; the connecting ring is symmetrically installed on the left and right sides of the roller sleeve body with the roller sleeve body as the center reference; and the upper end of the vent hole is hexagonal.

[0011] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: the vent holes are evenly distributed on the outer side of the connecting ring, and the vent holes are symmetrically installed on the left and right sides of the roller sleeve body with the roller sleeve body as the center reference, and the vent holes have a double-layer structure.

[0012] For example, in at least one embodiment of the present invention, a wear-resistant roller sleeve for a vertical mill is provided, which further includes: the grinding roller body is connected to the inner cavity through a connecting ring; the first mounting groove and the second mounting groove have the same structure; the first fixing groove and the second fixing groove have the same structure; the first mounting groove is symmetrically installed on the front and rear sides of the grinding roller body with the grinding roller body as the center reference; and the first mounting groove and the second mounting groove are symmetrically installed on the left and right sides of the grinding roller body with the grinding roller body as the center reference.

[0013] The beneficial effects of the embodiments of this utility model are as follows:

[0014] In this invention, a reinforcing layer is added to the outer end of the roller sleeve body. The reinforcing layer has a wave-shaped structure, which increases the contact area between the roller sleeve body and the material, reducing material slippage. Cooling channels are set inside the roller sleeve body, which, combined with honeycomb vents, allow air circulation inside the roller sleeve body for heat dissipation. The honeycomb vent structure reduces the overall structural weight, and the hexagonal honeycomb shape increases the support around the connecting ring. The above-mentioned design, through the wave-shaped structure, enhances material grinding and heat dissipation, improving overall performance. In addition, in this device, an installation groove and a fixing groove are installed on the upper end of the grinding roller body. The fixing groove and the insertion block are interlocked to quickly fix the grinding roller body to the roller sleeve body. The piston rod moves in the cylinder to push the installation block, connecting the roller sleeve body and the grinding roller body. The above-mentioned design, through multiple sets of connections, combines the roller sleeve body and the grinding roller body, which not only allows for quick installation of the grinding roller body but also facilitates subsequent disassembly and replacement. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a wear-resistant roller sleeve for a vertical mill in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the roller sleeve structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the grinding roller structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the quick installation structure of this utility model.

[0020] In the diagram: 1. Roller sleeve body; 2. Reinforcing layer; 3. Oil injection hole; 4. Vent hole; 5. Connecting ring; 6. Inner cavity; 7. Grinding roller body; 8. First mounting groove; 9. First fixing groove; 10. Second mounting groove; 11. Second fixing groove; 12. First insertion block; 13. Second insertion block; 14. Expansion ring; 15. Mounting block; 16. Cylinder; 17. Piston rod; 18. Conveying pipe; 19. Oil pump; 20. Pressure sensor. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-3As shown, it illustrates a wear-resistant roller sleeve for a vertical mill according to an embodiment of the present invention, comprising: a roller sleeve body 1, a reinforcing layer 2 fixedly installed on the outer side of the upper end of the roller sleeve body 1, an inner cavity 6 fixedly opened inside the roller sleeve body 1, a first insertion block 12 fixedly connected inside the inner cavity 6, and a second insertion block 13 fixedly connected to the right side of the first insertion block 12, an expansion ring 14 fixedly installed at the front end of the second insertion block 13, and an installation block 15 fixedly installed at the front end of the expansion ring 14;

[0028] Cylinder 16 is fixedly installed at the front end of mounting block 15. Piston rod 17 is fixedly connected inside cylinder 16. Delivery pipe 18 is fixedly installed at the upper end of cylinder 16, and oil pump 19 is fixedly installed on the left side of delivery pipe 18. Pressure sensor 20 is fixedly installed at the upper end of oil pump 19.

[0029] For example, such as Figure 3 As shown, a grinding roller body 7 is fixedly connected inside the connecting ring 5. A first mounting groove 8 is fixedly opened at the upper end of the grinding roller body 7, and a first fixing groove 9 is fixedly opened inside the first mounting groove 8. A second mounting groove 10 is fixedly opened on the right side of the first mounting groove 8, and a second fixing groove 11 is fixedly opened inside the second mounting groove 10.

[0030] For example, such as Figure 4 As shown, the upper end of the reinforcing layer 2 is wavy. The upper ends of the first insertion block 12 and the second insertion block 13 have the same structure. The first insertion block 12 and the first fixing groove 9 are interlocked. The second insertion block 13 and the second fixing groove 11 are interlocked.

[0031] For example, such as Figure 4 As shown, the second insertion block 13 and the second mounting groove 10 are connected by an interlocking connection. The cylinder 16 is symmetrically installed on the left and right sides of the conveying pipe 18 with the conveying pipe 18 as the center reference. The mounting block 15 slides in the inner cavity 6 through the piston.

[0032] For example, such as Figure 3 As shown, the grinding roller body 7 is connected to the inner cavity 6 via the connecting ring 5. The first mounting groove 8 and the second mounting groove 10 have the same structure, and the first fixing groove 9 and the second fixing groove 11 have the same structure. The first mounting groove 8 is symmetrically installed on the front and rear sides of the grinding roller body 7 with the grinding roller body 7 as the center reference, and the first mounting groove 8 and the second mounting groove 10 are symmetrically installed on the left and right sides of the grinding roller body 7 with the grinding roller body 7 as the center reference.

[0033] In some examples, a reinforcing layer 2 is added to the outer end of the original roller sleeve body 1. The outer layer of the roller sleeve body 1 is made of high-chromium cast iron, and the inner layer is made of low-alloy steel. The upper end of the reinforcing layer 2 is wavy. When the roller sleeve body 1 rotates, the wavy surface structure increases the contact area between the roller sleeve body 1 and the material, thereby increasing the friction between the upper end of the roller sleeve body 1 and the material. Oil injection holes 3 are added to both sides of the roller sleeve body 1. The oil injection holes 3 are connected to the oil pump 19, and hydraulic oil is delivered to the oil pump 19 through the oil injection holes 3. The vent holes 4 have a honeycomb hexagonal structure. The vent holes 4 are used to build up the internal structure of the roller sleeve body 1. An air channel is established to allow rapid heat dissipation inside the roller sleeve body 1. The honeycomb holes form an air convection channel to reduce the internal temperature of the roller sleeve body 1. The vent holes 4 increase the stability around the connecting ring 5. The honeycomb structure can reduce the weight of the roller sleeve body 1 and slow down the material softening and thermal fatigue caused by high temperature. The connecting ring 5 connects and fixes the grinding roller body 7 to the roller sleeve body 1 through the inner cavity 6. The first mounting groove 8 and the second mounting groove 10 are distributed on the left and right sides of the grinding roller body 7. A fixing groove is added in the mounting groove. When the grinding roller body 7 passes through the inner cavity 6 to fix the roller sleeve body 1, it is fixed by the piston rod 17.

[0034] For example, such as Figure 2 As shown, it illustrates a wear-resistant roller sleeve for a vertical mill in another embodiment of the present invention, including an oil injection hole 3 fixedly opened on both sides of the upper end of the roller sleeve body 1, an air vent 4 fixedly opened on the inner side of the oil injection hole 3, and a connecting ring 5 fixedly installed on the inner side of the air vent 4.

[0035] For example, such as Figure 2 As shown, the oil injection hole 3 is symmetrically installed on the front and rear sides of the roller sleeve body 1 with the roller sleeve body 1 as the center reference, the connecting ring 5 is symmetrically installed on the left and right sides of the roller sleeve body 1 with the roller sleeve body 1 as the center reference, and the upper end of the vent hole 4 is hexagonal.

[0036] For example, such as Figure 4 As shown, the vent holes 4 are evenly distributed on the outer side of the connecting ring 5, and the vent holes 4 are symmetrically installed on the left and right sides of the roller sleeve body 1 with the roller sleeve body 1 as the center reference. The vent holes 4 have a double-layer structure.

[0037] In some examples, the grinding roller body 7 is accurately positioned in the inner cavity 6 to complete the basic alignment of the components. The PLC controller starts the hydraulic system and injects hydraulic oil into the oil pump 19 through the oil injection hole 3. The oil pump 19 is connected to the delivery pipe 18. The oil pump 19 delivers the high-pressure oil to the inner cavity 6 of the cylinder 16 through the delivery pipe 18. The hydraulic oil pressure drives the piston rod 17 in the cylinder 16 to move linearly towards the mounting block 15. The thrust of the piston rod 17 is transmitted to the mounting block 15, triggering the radial expansion action of the expansion ring 14. The pressure is regulated by the pressure sensor 20, which is an SM500. The expansion force of the expansion ring 14 pushes the insertion block to complete the precise insertion with the fixing groove, so that the insertion block and the fixing groove are interlocked. After insertion, the expansion ring 14 maintains radial pressure to achieve bidirectional mechanical locking of the mounting groove.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wear-resistant roller sleeve for a vertical mill, characterized in that, include: A roller sleeve body (1) is provided with a reinforcing layer (2) fixedly installed on the outer side of the upper end of the roller sleeve body (1). An inner cavity (6) is fixedly opened inside the roller sleeve body (1). A first insertion block (12) is fixedly connected inside the inner cavity (6). A second insertion block (13) is fixedly connected to the right side of the first insertion block (12). An expansion ring (14) is fixedly installed at the front end of the second insertion block (13). An installation block (15) is fixedly installed at the front end of the expansion ring (14). Cylinder (16), the cylinder (16) is fixedly installed at the front end of the mounting block (15), the piston rod (17) is fixedly connected inside the cylinder (16), the upper end of the cylinder (16) is fixedly installed with a delivery pipe (18), and the left side of the delivery pipe (18) is fixedly installed with an oil pump (19), and the upper end of the oil pump (19) is fixedly installed with an oil pressure sensor (20).

2. The wear-resistant roller sleeve for a vertical mill according to claim 1, characterized in that, Oil injection holes (3) are fixedly opened on both sides of the upper end of the roller sleeve body (1), and air vents (4) are fixedly opened on the inner side of the oil injection holes (3), and a connecting ring (5) is fixedly installed on the inner side of the air vents (4).

3. The wear-resistant roller sleeve for a vertical mill according to claim 2, characterized in that, The grinding roller body (7) is fixedly connected inside the connecting ring (5). The upper end of the grinding roller body (7) is fixedly provided with a first mounting groove (8), and the first mounting groove (8) is fixedly provided with a first fixing groove (9). The right side of the first mounting groove (8) is fixedly provided with a second mounting groove (10), and the inside of the second mounting groove (10) is fixedly provided with a second fixing groove (11).

4. The wear-resistant roller sleeve for a vertical mill according to claim 1, characterized in that, The upper end of the reinforcement layer (2) is wavy. The upper end structures of the first insertion block (12) and the second insertion block (13) are the same. The first insertion block (12) and the first fixing groove (9) are interlocked. The second insertion block (13) and the second fixing groove (11) are interlocked.

5. The wear-resistant roller sleeve for a vertical mill according to claim 1, characterized in that, The second insertion block (13) and the second mounting groove (10) are connected by an interlocking connection. The cylinder (16) is symmetrically installed on the left and right sides of the conveying pipe (18) with the conveying pipe (18) as the center reference. The mounting block (15) slides in the inner cavity (6) by a piston.

6. The wear-resistant roller sleeve for a vertical mill according to claim 2, characterized in that, The oil injection hole (3) is symmetrically installed on the front and rear sides of the roller sleeve body (1) with the roller sleeve body (1) as the center reference. The connecting ring (5) is symmetrically installed on the left and right sides of the roller sleeve body (1) with the roller sleeve body (1) as the center reference. The upper end of the vent hole (4) is hexagonal.

7. The wear-resistant roller sleeve for a vertical mill according to claim 3, characterized in that, The ventilation holes (4) are evenly distributed on the outside of the connecting ring (5), and the ventilation holes (4) are symmetrically installed on the left and right sides of the roller sleeve body (1) with the roller sleeve body (1) as the center reference. The ventilation holes (4) are a double-layer structure.

8. The wear-resistant roller sleeve for a vertical mill according to claim 3, characterized in that, The grinding roller body (7) is connected to the inner cavity (6) by a connecting ring (5). The first mounting groove (8) and the second mounting groove (10) have the same structure. The first fixing groove (9) and the second fixing groove (11) have the same structure. The first mounting groove (8) is symmetrically installed on the front and rear sides of the grinding roller body (7) with the grinding roller body (7) as the center reference. The first mounting groove (8) and the second mounting groove (10) are symmetrically installed on the left and right sides of the grinding roller body (7) with the grinding roller body (7) as the center reference.

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