A repairable roller sleeve structure capable of rapid replacement

Abstract

The utility model discloses a quickly replaceable repairable roller sleeve structure, comprising a roller core and a roller skin, wherein a ceramic preform is compounded in the roller skin, the roller skin is mounted on the outer circumference of the roller core, and the roller skin is connected to the roller core by a detachable structure. The utility model discloses a quickly replaceable repairable roller sleeve structure, wherein the roller core and the roller skin are connected by a detachable structure, and when the roller skin needs to be replaced, the roller skin can be quickly disassembled and replaced, thereby shortening the replacement time and improving the production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller sleeves, and in particular relates to a repairable roller sleeve structure which can be quickly replaced. Background Art

[0002] Wear resistance is an important performance of the roller sleeve. In order to control the cost of the roller sleeve while ensuring the wear resistance of the roller sleeve, metal ceramic wear blocks can be installed on the outer ring of the roller sleeve.

[0003] At present, some metal ceramic wear blocks on roller sleeves are embedded in the roller sleeve or directly welded to the roller sleeve. With these two installation methods, it is not easy to replace the metal ceramic wear blocks after they are severely worn. Usually, the roller sleeve needs to be scrapped as a whole, which increases costs and wastes resources. Some metal ceramic wear blocks are directly fixed to the roller sleeve with bolts, but the bolts are easy to loosen due to vibration and other factors during use, resulting in an insufficiently stable connection between the metal ceramic wear block and the roller sleeve. At the same time, the roller sleeve of the medium-speed coal mill in a coal-fired power plant is a vulnerable part. Especially when the coal quality is poor, the replacement cycle of the roller sleeve is very short, the maintenance and replacement costs are relatively high, and it takes a long time. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to solve the deficiencies in the prior art and to provide a repairable roller sleeve structure that can be quickly replaced.

[0005] Technical solution: The utility model discloses a quickly replaceable and repairable roller sleeve structure, comprising a roller core and a roller skin, wherein the roller skin is compounded with a ceramic preform, the roller skin is mounted on the outer circumference of the roller core, and the roller skin is connected to the roller core by a detachable structure.

[0006] In some embodiments, one end of the roller skin is connected to the roller core in a detachable structure.

[0007] In some embodiments, the other end of the roller skin is fixed to the roller core by clamping.

[0008] In some embodiments, a "V"-shaped notch is provided at the other end of the roller skin.

[0009] In some embodiments, the ceramic preform is in a grid shape or a honeycomb shape.

[0010] In some embodiments, the detachable structure includes a pressure block and a fixing bolt. The pressure block is placed in a groove formed by the inclined surface at one end of the roller skin and the roller core. The roller skin and the roller core are fixed and locked by passing the fixing bolt through the pressure block and screwing it into the roller core.

[0011] In some embodiments, a spring washer and a flat washer are also included.

[0012] In some embodiments, a wear-resistant ring is installed at an outer end of the groove formed by one end of the roller skin and the roller core.

[0013] In some embodiments, the surface of the wear-resistant ring is flush with the surface of the roller skin.

[0014] In some embodiments, the wear-resistant ring is intermittently welded to the roller core.

[0015] Beneficial effects: The beneficial effects of the utility model are as follows:

[0016] (1) In the utility model, the roller skin and the roller core are connected by a detachable structure, so when the roller skin needs to be replaced, it can be quickly disassembled and replaced, which shortens the replacement time and improves the production efficiency;

[0017] (2) In the present invention, the other end (lower end) of the roller skin is fixed to the roller core by a "V"-shaped slot; when the roller skin needs to be replaced, it can be replaced by simply removing it through the detachable structure at the upper end, which is convenient and quick;

[0018] (3) In the present invention, the detachable structure includes a pressing block and a fixing bolt. The pressing block is placed in a groove formed by one end of the roller skin and the roller core. The function of the pressing block is to improve the stability of the connection while the roller core and the roller skin are fixed by the fixing bolts, so as to avoid loosening due to factors such as vibration, resulting in unstable connection.

[0019] (4) In the present invention, a "V"-shaped notch is provided at the other end of the roller skin, and the "V"-shaped notch and the "V"-shaped groove on the outer edge of the roller core are mutually engaged to form a stable connection structure, thereby ensuring the tightness and firmness of the overall connection between the roller skin and the roller core;

[0020] (5) In the present invention, the ceramic preform is in a grid or honeycomb shape; the ceramic preform is made of ceramic particles, high-temperature ceramic powder and high-temperature binder, in a grid shape, and is used to be compounded into a high-chromium roller skin to form a wear-resistant layer, having dual wear-resistant properties;

[0021] (6) In the present invention, a wear-resistant ring is installed at the outer end of the groove formed by one end (upper end) of the roller skin and the roller core. The function of the wear-resistant ring is to protect the internal fixing bolts and also has a wear-resistant function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the roller sleeve structure of an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged schematic diagram of the detachable structure at C in the middle;

[0024] Figure 3This is a schematic diagram of the roller skin structure of an embodiment of the utility model;

[0025] Figure 4 for Figure 3 Structural cross-sectional view of

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of a ceramic preform according to an embodiment of the utility model;

[0027] Figure 6 This is a front view of a ceramic preform structure according to an embodiment of the utility model;

[0028] Figure 7 for Figure 6 AA structural cross-sectional view;

[0029] Figure 8 This is a schematic diagram of a block structure of an embodiment of the utility model;

[0030] Fig. 9 for Figure 8 Structural cross-sectional view of

[0031] Fig.10 This is a schematic diagram of the structure of a wear-resistant ring according to an embodiment of the utility model. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "inside", "outside", etc. are the directions or positional relationships shown, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings. Example

[0036] like Figure 1 As shown, a quickly replaceable and repairable roller sleeve structure includes a roller core 1 and a roller skin 2, wherein the roller skin 2 is compounded with a ceramic preform 3, the roller skin 2 is installed on the outer circumference of the roller core 1, and the roller skin 2 is connected to the roller core 1 by a detachable structure.

[0037] In this embodiment, the roller skin 2 is connected to the roller core 1 by a detachable structure, so when the roller skin needs to be replaced, it can be quickly disassembled and replaced, which shortens the replacement time and improves production efficiency. Example

[0038] like Figure 1 As shown, a quickly replaceable and repairable roller sleeve structure includes a roller core 1 and a roller skin 2, wherein the roller skin 2 is compounded with a ceramic preform 3, the roller skin 2 is installed on the outer circumference of the roller core 1, and the roller skin 2 is connected to the roller core 1 by a detachable structure.

[0039] In this embodiment, the roller core is made of ordinary cast steel ZG25 material, which has low hardness and is easy to process, greatly reducing the machining cost.

[0040] In this embodiment, Figure 1 As shown, one end (upper end) of the roller skin 2 is connected to the roller core 1 in a detachable structure.

[0041] Further, such as Figure 1 As shown, the other end (lower end) of the roller skin 2 is fixed to the roller core 1 by a clamping method. When the roller skin needs to be replaced, it can be replaced by simply disassembling it through the detachable structure at the upper end, which is convenient and quick.

[0042] In this embodiment, Figure 2 As shown, the detachable structure includes a pressing block 4 and a fixing bolt 6. The pressing block 4 is placed in a groove formed by one end of the roller skin 2 and the roller core 1. The fixing bolt 6 passes through the pressing block 4 and is screwed into the roller core to fix and lock the roller skin 2 and the roller core 1. By fixing and locking the roller core 1 and the roller skin 2 through the pressing block 4 and the fixing bolt 6, when the roller skin needs to be replaced, it is only necessary to remove the fixing bolt 6 and then replace the new roller skin, which is fast and convenient. In this embodiment, as shown in FIG. Figure 8 to Figure 9 As shown, the function of the pressing block 4 is to improve the stability of the connection while the roller core 1 and the roller skin 2 are fixed by the pressing block 4 and the fixing bolts 6, so as to avoid loosening due to factors such as vibration, resulting in unstable connection.

[0043] In this embodiment, it is further preferred that in order to further increase the stability and firmness of the connection, as Figure 2 As shown, it also includes an elastic washer 7 and a flat washer 8, which are placed in the bolt holes of the pressing block 4, and then the fixing bolts 6 pass through the elastic washer 7 and the flat washer 8 in sequence to fix them in place.

[0044] In this embodiment, Figure 3 and Figure 4 As shown, the other end of the roller skin 2 is provided with a "V"-shaped notch, and the "V"-shaped notch and the "V"-shaped groove on the outer edge of the roller core are mutually engaged to form a stable connection structure, thereby ensuring the tightness and firmness of the overall connection between the roller skin and the roller core.

[0045] In this embodiment, Figures 5 to 7 As shown, the ceramic preform 3 is in a grid or honeycomb shape. The ceramic preform 3 is made of ceramic particles, high-temperature ceramic powder and high-temperature binder, in a grid shape, and is used to be compounded into the high-chromium roller skin 2 to form a wear-resistant layer, and has dual wear resistance.

[0046] In this embodiment, Figure 2 and Fig.10 As shown, a wear-resistant ring 5 is installed at the outer end of the groove formed by one end (upper end) of the roller skin 2 and the roller core. The wear-resistant ring 5 is used to protect the internal fixing bolts and has a wear-resistant function. The wear-resistant ring 5 can be made of wear-resistant castings, wear-resistant steel plates, surface-hardened plates, etc.

[0047] Further preferably, the surface of the wear-resistant ring 5 is flush with the surface of the roller skin 2 .

[0048] Further preferably, the wear-resistant ring 5 is discontinuously welded to the roller core 1, and when the roller skin needs to be replaced, only the weld needs to be polished.

[0049] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A quickly replaceable and repairable roller sleeve structure, comprising a roller core (1) and a roller skin (2), characterized in that: The roller skin (2) is compounded with a ceramic preform (3), the roller skin (2) is mounted on the outer circumference of the roller core (1), and the roller skin (2) and the roller core (1) are connected using a detachable structure.

2. A quickly replaceable and repairable roller sleeve structure according to claim 1, characterized in that: One end of the roller skin (2) is connected to the roller core (1) in a detachable structure.

3. The quickly replaceable and repairable roller sleeve structure according to claim 2, characterized in that: The other end of the roller skin (2) is fixed to the roller core (1) by means of a clamping connection.

4. The quickly replaceable and repairable roller sleeve structure according to claim 3, characterized in that: The other end of the roller skin (2) is provided with a "V"-shaped notch.

5. The quickly replaceable and repairable roller sleeve structure according to claim 1, characterized in that: The ceramic preform (3) is in a grid shape or a honeycomb shape.

6. A quickly replaceable and repairable roller sleeve structure according to claim 1 or 2, characterized in that: The detachable structure comprises a pressing block (4) and a fixing bolt (6); the pressing block (4) is placed in a groove formed by an inclined surface at one end of the roller skin (2) and the roller core (1); the fixing bolt (6) passes through the pressing block (4) and is screwed into the roller core (1) to fix and lock the roller skin (2) and the roller core (1).

7. The quickly replaceable and repairable roller sleeve structure according to claim 6, characterized in that: It also includes an elastic washer (7) and a flat washer (8).

8. The quickly replaceable and repairable roller sleeve structure according to claim 6, characterized in that: A wear-resistant ring (5) is installed at the outer end of the groove formed by one end of the roller skin (2) and the roller core (1).

9. The quickly replaceable and repairable roller sleeve structure according to claim 8, characterized in that: The surface of the wear-resistant ring (5) is flush with the surface of the roller skin (2).

10. The quickly replaceable and repairable roller sleeve structure according to claim 9, characterized in that: The wear-resistant ring (5) is intermittently welded to the roller core (1).

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