A stud roll sleeve for a roll mill

Abstract

This utility model relates to the field of roller mill technology, and provides a pin-type roller sleeve for a roller mill, including a roller sleeve body. A roller shaft body is laterally slidably installed inside the roller sleeve body, and a quick-change mechanism is mounted on the roller shaft body. Several sets of first mounting grooves are laterally arranged in a circumferential array on the inner wall of the roller sleeve body. First mounting strips are laterally fixedly installed on the outer wall of the roller shaft body at corresponding positions to each set of first mounting grooves, and each set of first mounting strips is slidably connected to the corresponding first mounting groove. A first anti-detachment plate is fitted on the left side of the roller shaft body, and several sets of first screws are laterally threaded through the first anti-detachment plate in a circumferential array. This technical solution effectively solves the technical problems of screw loosening and difficulty in maintenance during use.

Description

Technical Field

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

[0002] Roller mills are a new generation of crushing and grinding technology and equipment developed at the end of the 20th century for industries such as building materials, cement, metallurgy, mining, and chemicals. They are recognized worldwide as advanced energy-saving equipment and have achieved rapid global adoption. They can significantly increase the output of finished materials with extremely low energy consumption and operating costs. Furthermore, they have advantages such as large processing capacity, small footprint, compact structure, and low requirements for transportation and installation. As the core equipment for grinding and processing materials such as ores and cement, the connection structure between the roller sleeve and the roller shaft directly affects the equipment's operating performance and maintenance efficiency.

[0003] Currently, the industry commonly uses a screw connection method to fix the stud roller sleeve and the roller shaft, that is, multiple screws are used to fasten the sleeve and the roller shaft through pre-drilled holes. This traditional connection method has many drawbacks: First, the screws are prone to loosening under the high-frequency vibration and alternating load of the roller mill, causing relative displacement between the sleeve and the roller shaft, which in turn leads to a decrease in grinding efficiency and abnormal wear of the equipment; Second, installation and disassembly require repeated tightening or disassembly of a large number of screws, resulting in long maintenance times and significantly increasing downtime costs and labor intensity; Third, gaps exist in the screw connection, and fine powder during the grinding process can easily seep into the screw holes, causing the screws to rust and jam, further exacerbating maintenance difficulties and even requiring destructive disassembly; Fourth, uneven force distribution among multiple screws is difficult to avoid, leading to an imbalance in the force distribution of the sleeve and shortening the service life of the equipment to some extent; In addition, the studs on the existing sleeves are all integrally molded structures. After long-term use, when the studs wear out severely, the entire stud roller sleeve needs to be replaced, which is not only cumbersome but also costly. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a pin roller sleeve for a roller mill, which effectively solves the technical problems of screw loosening and difficulty in maintenance during use.

[0005] According to one aspect, at least one embodiment of the present invention provides a pinned roller sleeve for a roller mill, comprising: a roller sleeve body, a roller shaft body being slidably mounted transversely through the inside of the roller sleeve body, a quick-change mechanism being mounted on the roller shaft body, a plurality of sets of first mounting grooves being transversely arranged in a circumferential array on the inner wall of the roller sleeve body, and a first mounting strip being transversely fixedly mounted on the outer wall of the roller shaft body at a position corresponding to each set of first mounting grooves, each set of first mounting strips being slidably connected to the first mounting groove at the corresponding position;

[0006] The first anti-detachment plate is sleeved on the left side of the roller body. Several sets of first screws are connected in a circumferential array with transverse through threads on the first anti-detachment plate. A first mounting hole is opened on the outer left side wall of the roller body at the corresponding position of each set of first screws.

[0007] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: the cross-section of each group of the first mounting groove and each group of the first mounting strip is a dovetail-shaped structure.

[0008] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is further provided, wherein a first sealing gasket is fixedly installed on the inner wall of each group of the first mounting grooves.

[0009] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: a first internal thread matching the first screw is provided on the inner wall of each group of first mounting holes.

[0010] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: the quick replacement mechanism includes a second mounting groove, a second mounting strip and pins, and a plurality of sets of second mounting grooves are horizontally arranged in a circumferential array on the outer wall of the roller sleeve body. A second mounting strip is slidably installed inside each set of second mounting grooves, and a plurality of sets of pins are fixedly installed on each set of second mounting strips, and the pins are staggered.

[0011] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: the quick replacement mechanism includes a second anti-detachment plate, a second screw, and a second mounting hole. The second anti-detachment plate is provided on the right side of the roller sleeve body. Several sets of second screws are connected in a circumferential array through a thread on the second anti-detachment plate. A second mounting hole is provided on the outer wall of the right side of the roller sleeve body at the corresponding position of each set of second screws.

[0012] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: a second internal thread matching the second screw is provided on the inner wall of each group of second mounting holes.

[0013] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: the cross-section of each group of the second mounting groove and each group of the second mounting strip is trapezoidal.

[0014] For example, in at least one embodiment of the present invention, a roller sleeve for a roller mill is provided, which further includes: the cross-section of each group of the rollers is hexagonal, and the outer wall of each group of the rollers is provided with grinding grooves.

[0015] For example, in at least one embodiment of the present invention, a pin roller sleeve for a roller mill is provided, which further includes: a plurality of connected holes are arranged in a circular array at the edge of the outer wall on the left side of the roller sleeve body, and each set of connected holes is connected to the second mounting groove at the corresponding position.

[0016] The beneficial effects of the embodiments of this utility model are as follows:

[0017] In this invention, the first mounting groove and the first mounting strip, which are in the shape of dovetails, form a wedge-shaped interlocking mechanical self-locking structure. Compared with screw connections, this effectively reduces the risk of loosening due to vibration. Under the complex load conditions of the roller mill, the centrifugal force and working pressure generated by rotation will make the interlocking surfaces of the dovetail structure fit more tightly, ensuring that the roller sleeve and the roller shaft always maintain synchronous operation, significantly improving the stability of equipment operation and reducing downtime caused by loosening. In addition, the quick replacement mechanism in this device means that when the pins are severely worn after long-term use and need to be replaced, it is not necessary to disassemble and replace the entire roller sleeve. Only the second mounting strip corresponding to the severely worn pin needs to be removed from the second mounting groove for replacement. The above features not only improve the replacement speed but also reduce the cost of use, making the device more practical. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the structure of a pin-shaped roller sleeve for a roller mill in one embodiment of the present invention;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a side view of the structure of this utility model;

[0022] Figure 4 This is a side view sectional structural diagram of the present invention;

[0023] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0024] In the figure: 1. Roller sleeve body; 2. Roller shaft body; 3. First mounting groove; 4. First mounting strip; 5. First anti-drop plate; 6. First screw; 7. First mounting hole; 8. Second mounting groove; 9. Second mounting strip; 10. Stud; 11. Grinding texture; 12. Connecting hole; 13. Second anti-drop plate; 14. Second screw; 15. Second mounting hole. Detailed Implementation

[0025] 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.

[0026] 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."

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figures 1-5 As shown, it illustrates a pin roller sleeve for a roller mill according to an embodiment of the present invention, comprising: a roller sleeve body 1, a roller shaft body 2 slidably mounted transversely through the inside of the roller sleeve body 1, a quick replacement mechanism mounted on the roller shaft body 2, a plurality of first mounting grooves 3 arranged in a circumferential array on the inner wall of the roller sleeve body 1, and a first mounting strip 4 fixedly mounted transversely on the outer wall of the roller shaft body 2 at a corresponding position of each group of first mounting grooves 3, and each group of first mounting strips 4 being slidably connected to the first mounting groove 3 at the corresponding position;

[0032] The first anti-detachment plate 5 is sleeved on the left side of the roller body 2. Several sets of first screws 6 are connected in a circumferential array with transverse through threads on the first anti-detachment plate 5. A first mounting hole 7 is opened on the outer left side of the roller body 1 at the corresponding position of each set of first screws 6.

[0033] For example, such as Figure 1 As shown, the cross-section of each group of first mounting grooves 3 and each group of first mounting strips 4 is a dovetail-shaped structure; a first sealing gasket is fixedly installed on the inner wall of each group of first mounting grooves 3; and a first internal thread matching the first screw 6 is opened on the inner wall of each group of first mounting holes 7.

[0034] In some examples, when installing the roller sleeve body 1 onto the roller shaft body 2, the operator only needs to slide the first mounting strip 4, which is fixedly installed on the roller shaft body 2, into the first mounting groove 3 opened on the inner wall of the roller shaft body 1. Because both the first mounting groove 3 and the first mounting strip 4 are designed with a dovetail shape, the first mounting groove 3 and the first mounting strip 4 form a wedge-shaped interlocking mechanical self-locking structure. Compared with screw connections, this can effectively reduce the risk of loosening caused by vibration. Under the complex load conditions of the roller mill, the centrifugal force and working pressure generated by rotation will make the interlocking surfaces of the dovetail structure fit more tightly, ensuring that the roller sleeve body 1 and the roller shaft body 2 always maintain synchronous operation, significantly improving the stability of equipment operation and reducing downtime caused by loosening. In addition, in this device, the setting of the first anti-detachment plate 5 can effectively prevent the roller sleeve body 1 from shifting laterally on the roller shaft body 2. The above settings not only improve the stability of equipment operation, but also facilitate installation and maintenance, making the device more practical.

[0035] like Figure 3 As shown, it illustrates a pin roller sleeve for a roller mill in another embodiment of the present invention. The quick-change mechanism includes a second mounting groove 8, a second mounting strip 9, and pins 10. Several sets of second mounting grooves 8 are horizontally arranged in a circumferential array on the outer wall of the roller sleeve body 1. A second mounting strip 9 is slidably installed inside each set of second mounting grooves 8. Several sets of pins 10 are fixedly installed on each set of second mounting strips 9, and the pins 10 are staggered.

[0036] For example, such as Figure 3 As shown, the quick-change mechanism also includes a second anti-detachment plate 13, a second screw 14, and a second mounting hole 15. The second anti-detachment plate 13 is provided on the right side of the roller sleeve body 1. Several sets of second screws 14 are connected in a circumferential array with transverse through threads on the second anti-detachment plate 13. A second mounting hole 15 is provided on the outer wall of the right side of the roller sleeve body 1 at the corresponding position of each set of second screws 14.

[0037] For example, such as Figure 5 As shown, each set of second mounting holes 15 has a second internal thread that matches the second screw 14 on its inner wall; each set of second mounting grooves 8 and each set of second mounting strips 9 has a trapezoidal cross-section; each set of studs 10 has a regular hexagonal cross-section, and each set of studs 10 has a grinding groove 11 on its outer wall.

[0038] For example, such as Figure 2 As shown, several sets of connecting holes 12 are arranged in a circular array at the edge of the outer wall on the left side of the roller sleeve body 1. Each set of connecting holes 12 is connected to the second mounting groove 8 at the corresponding position.

[0039] In some examples, when the pin 10 wears out severely due to prolonged use of the device and needs to be replaced, it is not necessary to disassemble and replace the entire roller sleeve body 1. Only the second mounting strip 9 corresponding to the severely worn pin 10 needs to be removed from the second mounting groove 8 for replacement. The second anti-fall-off plate 13 effectively prevents the second mounting strip 9 from slipping out of the second mounting groove 8. This design not only improves the replacement speed but also reduces operating costs. Furthermore, the connecting hole 12 allows the operator to remove the second mounting strip 9 when it is difficult to remove from the second mounting groove 8 due to slight deformation caused by processing. In such cases, the operator can insert a tool similar to a push rod into the connecting hole 12 to strike the second mounting strip 9, thereby removing it. This further improves the practicality of the device.

[0040] 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 pinned roller sleeve for a roller mill, characterized in that, include: The roller sleeve body (1) has a roller shaft body (2) that is horizontally slidably installed inside the roller sleeve body (1). The roller shaft body (2) is equipped with a quick replacement mechanism. The inner wall of the roller sleeve body (1) has several sets of first mounting grooves (3) arranged in a circular array. The outer wall of the roller shaft body (2) is horizontally fixed with a first mounting strip (4) at the corresponding position of each set of first mounting grooves (3). Each set of first mounting strips (4) is slidably connected to the first mounting groove (3) at the corresponding position. First anti-detachment plate (5), the first anti-detachment plate (5) is sleeved on the left side of the roller body (2), and a number of first screws (6) are connected in a circumferential array through the transverse thread on the first anti-detachment plate (5). A first mounting hole (7) is opened on the outer wall of the left side of the roller body (1) at the corresponding position of each group of first screws (6).

2. The pinned roller sleeve for a roller mill according to claim 1, characterized in that, The cross-section of the first mounting groove (3) in each group and the first mounting strip (4) in each group are both dovetail-shaped.

3. The pinned roller sleeve for a roller mill according to claim 2, characterized in that, A first sealing gasket is fixedly installed on the inner wall of the first mounting groove (3) in each group.

4. The pinned roller sleeve for a roller mill according to claim 1, characterized in that, Each set of the first mounting holes (7) has a first internal thread on its inner wall that matches the first screw (6).

5. A pinned roller sleeve for a roller mill according to claim 1, characterized in that, The quick-change mechanism includes a second mounting groove (8), a second mounting strip (9), and studs (10). Several sets of second mounting grooves (8) are arranged in a circumferential array on the outer wall of the roller sleeve body (1). A second mounting strip (9) is slidably installed inside each set of second mounting grooves (8). Several sets of studs (10) are fixedly installed on each set of second mounting strips (9), and the studs (10) are staggered.

6. A pinned roller sleeve for a roller mill according to claim 1, characterized in that, The quick-change mechanism also includes a second anti-detachment plate (13), a second screw (14), and a second mounting hole (15). The right side of the roller sleeve body (1) is provided with a second anti-detachment plate (13). Several sets of second screws (14) are connected in a circumferential array through a thread on the second anti-detachment plate (13). A second mounting hole (15) is provided on the outer wall of the right side of the roller sleeve body (1) at the corresponding position of each set of second screws (14).

7. A pinned roller sleeve for a roller mill according to claim 6, characterized in that, Each set of second mounting holes (15) has a second internal thread on its inner wall that matches the second screw (14).

8. A pinned roller sleeve for a roller mill according to claim 5, characterized in that, The cross-section of each group of the second mounting groove (8) and each group of the second mounting strip (9) is trapezoidal.

9. A pinned roller sleeve for a roller mill according to claim 5, characterized in that, Each set of the studs (10) has a cross-section that is hexagonal, and each set of the studs (10) has a grinding groove (11) on its outer wall.

10. A pinned roller sleeve for a roller mill according to claim 5, characterized in that, The roller sleeve body (1) has several sets of connecting holes (12) arranged in a circular array at the edge of the outer wall on the left side. Each set of connecting holes (12) is connected to the second mounting groove (8) at the corresponding position.

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