Grinding roller assembly and grinding machine with same

Abstract

The utility model provides a grinding roller assembly and a grinding machine with the same. The grinding roller assembly comprises: a base having a mounting cavity and an accommodating cavity which are communicated with each other, the accommodating cavity being used for accommodating a lubricating liquid; the bearing structure is arranged in the mounting cavity; the grinding roller is movably arranged in the bearing structure in a penetrating mode, the grinding roller is provided with an oil inlet hole and an oil return hole, the first end of the oil inlet hole communicates with the mounting cavity, and the first end of the oil return hole communicates with the containing cavity; the lubricating oil station comprises a lubricating oil tank, and the second end of the oil inlet hole and the second end of the oil return hole are both communicated with the lubricating oil tank. The grinding roller assembly effectively solves the problems that in the prior art, a grinding roller assembly is prone to abrasion and jamming in the long-term high-temperature operation process.

Description

Technical Field

[0001] This utility model relates to the field of grinding mill technology, and more specifically, to a grinding roller assembly and a grinding mill having the same. Background Technology

[0002] Currently, vertical mills are widely used equipment in industries such as building materials and chemicals. Materials are ground through hot air drying, grinding, and cooling processes within the mill, offering advantages such as high grinding efficiency, low energy consumption, and reliable operation. Specifically, the grinding section of the mill consists of a grinding roller assembly, which is mounted on the mill's grinding disc to grind the material. Lubrication of this assembly plays a crucial role in the stable operation of the mill.

[0003] In the existing technology, grinding roller assemblies are usually lubricated with lithium-based grease. However, lithium-based grease has poor high-temperature resistance and is prone to aging at high temperatures. This not only affects its lubrication effect but also causes wear, jamming, burning and other malfunctions in the grinding roller assembly, affecting the normal operation of the mill. Utility Model Content

[0004] The main objective of this invention is to provide a grinding roller assembly and a mill having the same, in order to solve the problem that grinding roller assemblies in the prior art are prone to wear and jamming during long-term high-temperature operation.

[0005] To achieve the above objectives, according to one aspect of the present invention, a grinding roller assembly is provided, comprising: a base having an installation cavity and a receiving cavity that are interconnected, the receiving cavity being used to contain lubricating fluid; a bearing structure disposed within the installation cavity; a grinding roller movably disposed within the bearing structure, the grinding roller having an oil inlet hole and an oil return hole, the first end of the oil inlet hole communicating with the installation cavity, and the first end of the oil return hole communicating with the receiving cavity; and a lubricating oil station including a lubricating oil tank, the second ends of the oil inlet hole and the second ends of the oil return hole both communicating with the lubricating oil tank.

[0006] Furthermore, the central axis of the oil inlet hole is coaxial with the central axis of the grinding roller.

[0007] Furthermore, the oil return hole is located below the oil inlet hole, and the first end of the oil return hole penetrates the end face of the grinding roller and connects with the receiving cavity.

[0008] Furthermore, the grinding roller assembly also includes: an oil inlet pipe, the first end of which is detachably connected to the second end of the oil inlet hole via a first pipe joint, and the second end of the oil inlet pipe is connected to the lubricating oil tank; and / or, an oil return pipe, the first end of which is detachably connected to the second end of the oil return hole via a second pipe joint, and the second end of the oil return pipe is connected to the lubricating oil tank.

[0009] Furthermore, the grinding roller assembly also includes: a first control valve, which is disposed on the oil inlet pipe to control the on / off state of the oil inlet pipe and / or the flow rate or velocity of the lubricating oil in the oil inlet pipe; and / or a second control valve, which is disposed on the oil return pipe to control the on / off state of the oil return pipe and / or the flow rate or velocity of the lubricating oil in the oil return pipe.

[0010] Furthermore, the lubrication station also includes a heated oil tank that is in contact with the lubrication oil tank. The heated oil tank is equipped with a heater and a temperature sensor. The heater is used to heat the oil stored in the heated oil tank, and the temperature sensor is used to detect the temperature of the oil in the heated oil tank.

[0011] Furthermore, a first filter is provided between the second end of the oil inlet pipe and the lubricating oil tank; and / or, a second filter is provided between the second end of the oil return pipe and the lubricating oil tank.

[0012] Furthermore, a bearing oil guide hole is provided on the wall of the oil inlet hole, and the lubricating fluid discharged from the oil outlet end of the bearing oil guide hole enters the bearing structure.

[0013] Furthermore, the machine base includes: a mounting base having a mounting cavity; a support base connected to the mounting base and located on one side of the mounting base, with a portion of the grinding rollers passing through the bearing structure and another portion of the grinding rollers passing through the support base; and an end cover connected to the mounting base and located on the other side of the mounting base, with the end cover and the mounting base surrounding each other to form a receiving cavity.

[0014] According to another aspect of the present invention, a mill is provided, including the above-described grinding roller assembly.

[0015] The present invention relates to a grinding roller assembly comprising a base, a bearing structure, a grinding roller, and a lubrication station. The base has an interconnected mounting cavity and a receiving cavity, the receiving cavity being used to contain lubricating fluid. The bearing structure is disposed within the mounting cavity. The grinding roller is movably mounted within the bearing structure and has an oil inlet and an oil return hole. The first end of the oil inlet communicates with the mounting cavity, and the first end of the oil return hole communicates with the receiving cavity. The lubrication station includes a lubricating oil tank, and the second ends of both the oil inlet and the oil return hole communicate with the lubricating oil tank. Thus, the lubricating fluid stored in the lubrication station enters the mounting cavity through the oil inlet to lubricate the grinding roller and the bearing structure. After lubrication, the lubricating fluid returns through the oil return hole to the lubrication station, achieving circulation of the lubricating fluid among the lubrication station, the grinding roller, and the bearing structure.

[0016] Compared with the use of lithium-based grease for lubrication in the prior art, the grinding roller assembly in this application uses lubricating fluid instead of lithium-based grease to lubricate the grinding roller. Moreover, the lubrication effect of the lubricating fluid is not affected by temperature, thereby solving the problem of wear and jamming of the grinding roller assembly in the prior art during long-term high-temperature operation, improving lubrication efficiency, reducing lubricating fluid consumption, and effectively improving the operating efficiency and production quality of the mill. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A partial cross-sectional view of an embodiment of the grinding roller assembly according to the present invention is shown.

[0019] The above figures include the following reference numerals:

[0020] 10. Base; 11. Mounting cavity; 12. Receiving cavity; 13. Mounting base; 14. Support base; 15. End cover;

[0021] 20. Bearing structure;

[0022] 30. Grinding roller; 31. Oil inlet hole; 32. Oil return hole;

[0023] 40. Lubricating oil station; 50. Oil inlet pipe; 60. First pipe joint; 70. Oil return pipe; 80. Second pipe joint. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] In order to solve the problem that grinding roller assemblies in the prior art are prone to wear and jamming during long-term high-temperature operation, this application provides a grinding roller assembly and a mill having the same.

[0028] like Figure 1 As shown, the grinding roller assembly includes a base 10, a bearing structure 20, a grinding roller 30, and a lubrication station 40. The base 10 has an interconnected mounting cavity 11 and a receiving cavity 12, with the receiving cavity 12 used to hold lubricating fluid. The bearing structure 20 is disposed within the mounting cavity 11. The grinding roller 30 is movably mounted within the bearing structure 20 and has an oil inlet 31 and an oil return hole 32. The first end of the oil inlet 31 communicates with the mounting cavity 11, and the first end of the oil return hole 32 communicates with the receiving cavity 12. The lubrication station 40 includes a lubricating oil tank, with the second ends of both the oil inlet 31 and the oil return hole 32 communicating with the lubricating oil tank.

[0029] Using the technical solution of this embodiment, the lubricating fluid stored in the lubrication station 40 enters the mounting cavity 11 through the oil inlet 31 to lubricate the grinding roller 30 and the bearing structure 20. After lubrication, the lubricating fluid can flow back to the lubrication station 40 through the oil return hole 32 to realize the circulation of the lubricating fluid between the lubrication station 40, the grinding roller 30 and the bearing structure 20.

[0030] Compared with the use of lithium-based grease for lubrication in the prior art, the grinding roller assembly in this embodiment uses lubricating fluid instead of lithium-based grease to lubricate the grinding roller 30. Moreover, the lubrication effect of the lubricating fluid is not affected by temperature, thereby solving the problem of wear and jamming of the grinding roller assembly in the prior art during long-term high-temperature operation, improving lubrication efficiency, reducing lubricating fluid consumption, and effectively improving the operating efficiency and production quality of the mill.

[0031] In this embodiment, the central axis of the oil inlet 31 is coaxial with the central axis of the grinding roller 30. This coaxial design ensures that the lubricant can be evenly distributed to all parts of the grinding roller 30, avoiding local overheating or wear, extending the service life of the grinding roller 30, and making it suitable for industrial applications under various grinding conditions, such as ore grinding and cement grinding.

[0032] Specifically, the coaxial arrangement of the oil inlet 31 and the grinding roller 30 not only improves the uniformity of lubricant distribution but also optimizes the heat dissipation performance of the grinding roller 30, ensuring the temperature stability of the equipment during long-term operation and reducing equipment failures caused by thermal expansion and contraction.

[0033] In this embodiment, the oil return hole 32 is located below the oil inlet hole 31, and the first end of the oil return hole 32 penetrates the end face of the grinding roller 30 and communicates with the receiving cavity 12. In this way, the above arrangement utilizes the effect of gravity, so that the lubricating fluid can achieve natural return, which not only reduces the energy consumption of the oil return system, but also simplifies the layout of the oil return pipeline, and reduces the complexity and maintenance difficulty of the grinding roller assembly.

[0034] Optionally, the grinding roller assembly further includes an oil inlet pipe 50, the first end of which is detachably connected to the second end of an oil inlet hole 31 via a first pipe fitting 60, and the second end of the oil inlet pipe 50 is connected to a lubricating oil tank; and / or, the grinding roller assembly further includes an oil return pipe 70, the first end of which is detachably connected to the second end of an oil return hole 32 via a second pipe fitting 80, and the second end of the oil return pipe 70 is connected to a lubricating oil tank. This detachable pipe fitting design facilitates maintenance and replacement, reducing the maintenance cost of the grinding roller assembly.

[0035] In this embodiment, the grinding roller assembly further includes an oil inlet pipe 50 and an oil return pipe 70. The first end of the oil inlet pipe 50 is detachably connected to the second end of the oil inlet hole 31 via a first pipe connector 60, and the second end of the oil inlet pipe 50 communicates with the lubricating oil tank. The first end of the oil return pipe 70 is detachably connected to the second end of the oil return hole 32 via a second pipe connector 80, and the second end of the oil return pipe 70 communicates with the lubricating oil tank. Thus, the above-described arrangement of the oil inlet pipe 50 and the oil return pipe 70 enables the circulation of lubricating fluid between the lubricating oil station 40 and the bearing structure 20, thereby improving the utilization rate of the lubricating fluid.

[0036] Specifically, the first end of the oil inlet pipe 50 is threaded to the second end of the oil inlet hole 31 through the first pipe joint 60, and the first end of the oil return pipe 70 is threaded to the second end of the oil return hole 32 through the second pipe joint 80, so as to make the disassembly, assembly and replacement of the oil inlet pipe 50 and the oil return pipe 70 easier and simpler, and reduce the difficulty of operation.

[0037] Optionally, the grinding roller assembly further includes a first control valve disposed on the oil inlet pipe 50 for controlling the on / off state of the oil inlet pipe 50 and / or the flow rate or velocity of the lubricating oil within the oil inlet pipe 50; and / or, the grinding roller assembly further includes a second control valve disposed on the oil return pipe 70 for controlling the on / off state of the oil return pipe 70 and / or the flow rate or velocity of the lubricating oil within the oil return pipe 70. Thus, through precise control of the control valves, the grinding roller assembly can adapt to different working loads and ambient temperatures, ensuring efficient operation of the mill under various conditions and making it suitable for highly automated modern industrial production lines.

[0038] In this embodiment, the grinding roller assembly further includes a first control valve and a second control valve. The first control valve is disposed on the oil inlet pipe 50 to control the on / off state of the oil inlet pipe 50 and / or the flow rate or velocity of the lubricating oil within the oil inlet pipe 50. The second control valve is disposed on the oil return pipe 70 to control the on / off state of the oil return pipe 70 and / or the flow rate or velocity of the lubricating oil within the oil return pipe 70. Thus, the aforementioned arrangement of the first and second control valves achieves precise control of the lubricating fluid flow rate and velocity, allowing for flexible adjustment of the lubrication strategy according to different production needs and environmental conditions, optimizing the efficiency of lubricating fluid use, and reducing waste.

[0039] Optionally, the lubrication station 40 also includes a heated oil tank, which is in contact with the lubrication oil tank. The heated oil tank contains a heater and a temperature sensor. The heater heats the oil stored in the heated oil tank, and the temperature sensor detects the temperature of the oil within the heated oil tank. This heating oil tank configuration ensures the fluidity of the lubricating fluid in low-temperature environments, preventing equipment malfunctions caused by lubricating fluid solidification. Simultaneously, the temperature sensor monitors the temperature within the heated oil tank in real time, automatically adjusting the heater's operating status to maintain a suitable lubricating fluid temperature, extending the equipment's service life and improving operational reliability.

[0040] Optionally, a first filter is installed between the second end of the oil inlet pipe 50 and the lubricating oil tank; and / or, a second filter is installed between the second end of the oil return pipe 70 and the lubricating oil tank. In this way, the above-mentioned filter installation effectively prevents impurities from entering the lubrication system, protects the bearing structure 20, and reduces the equipment failure rate.

[0041] In this embodiment, a first filter is installed between the second end of the oil inlet pipe 50 and the lubricating oil tank, and a second filter is installed between the second end of the oil return pipe 70 and the lubricating oil tank. This arrangement of the first and second filters effectively filters impurities in the lubricating fluid, such as metal shavings and dust, protecting the bearing structure from wear and extending the service life of the equipment.

[0042] Optionally, the first filter is a screen or a magnetic filter. This arrangement ensures that the first filter can filter out magnetic impurities, preventing them from entering the grinding roller assembly.

[0043] Optionally, the second filter is a screen or a magnetic filter. This arrangement ensures that the second filter can filter out magnetic impurities, preventing them from entering the grinding roller assembly.

[0044] Optionally, the oil inlet 31 is provided with a bearing oil guide hole on its wall, allowing lubricant discharged from the oil outlet end of the bearing oil guide hole to enter the bearing structure 20. This arrangement of the bearing oil guide hole ensures that the lubricant can directly reach the bearing structure 20, improving lubrication, effectively reducing bearing wear and heat generation, and enhancing the operating efficiency and stability of the equipment.

[0045] Optionally, there is one bearing structure 20 and one bearing oil guide hole; or there are multiple bearing structures 20 and multiple bearing oil guide holes, with multiple bearing oil guide holes corresponding one-to-one with multiple bearing structures 20.

[0046] like Figure 1 As shown, the machine base 10 includes a mounting base 13, a support base 14, and an end cap 15. The mounting base 13 has a mounting cavity 11. The support base 14 is connected to the mounting base 13 and located on one side of the mounting base 13. A portion of the grinding rollers 30 pass through the bearing structure 20, and another portion of the grinding rollers 30 pass through the support base 14. The end cap 15 is connected to the mounting base 13 and located on the other side of the mounting base 13, forming a receiving cavity 12 between the end cap 15 and the mounting base 13. This configuration of the machine base 10 not only ensures the stability and strength of the grinding roller assembly but also optimizes the storage and circulation path of the lubricant, reducing lubricant loss during circulation and improving lubrication efficiency. Simultaneously, this configuration significantly improves the processing accuracy and production efficiency of the products, reducing the defect rate caused by equipment vibration or deformation.

[0047] Optionally, the lubricating oil station 40 also includes a first level gauge, which is installed on the lubricating oil tank to display the oil level in the lubricating oil tank for easy observation by the operator.

[0048] Optionally, the lubrication station 40 also includes a second level gauge, which is installed on the heating oil tank to display the oil level in the heating oil tank for easy observation by the operator.

[0049] Optionally, both the lubricating oil tank and the heating oil tank are equipped with drain ports at the bottom, and drain ball valves are installed at the drain ports.

[0050] This application also provides a mill (not shown) including the above-described mill roller assembly.

[0051] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0052] The grinding roller assembly includes a base, a bearing structure, the grinding roller, and a lubrication station. The base has an interconnected mounting cavity and a receiving cavity, the latter for holding lubricating fluid. The bearing structure is housed within the mounting cavity. The grinding roller is movably mounted within the bearing structure and has an oil inlet and an oil return hole. The first end of the oil inlet communicates with the mounting cavity, and the first end of the oil return hole communicates with the receiving cavity. The lubrication station includes a lubricating oil tank, with the second ends of both the oil inlet and the oil return hole communicating with the lubricating oil tank. Thus, the lubricating fluid stored in the lubrication station enters the mounting cavity through the oil inlet to lubricate the grinding roller and bearing structure. After lubrication, the lubricating fluid returns through the oil return hole to the lubrication station, achieving circulation of lubricating fluid among the lubrication station, the grinding roller, and the bearing structure.

[0053] Compared with the use of lithium-based grease for lubrication in the prior art, the grinding roller assembly in this application uses lubricating fluid instead of lithium-based grease to lubricate the grinding roller. Moreover, the lubrication effect of the lubricating fluid is not affected by temperature, thereby solving the problem of wear and jamming of the grinding roller assembly in the prior art during long-term high-temperature operation, improving lubrication efficiency, reducing lubricating fluid consumption, and effectively improving the operating efficiency and production quality of the mill.

[0054] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding roller assembly, characterized in that, include: The base (10) has an interconnected mounting cavity (11) and a receiving cavity (12), the receiving cavity (12) being used to receive lubricating fluid; The bearing structure (20) is disposed within the mounting cavity (11); The grinding roller (30) is movably installed inside the bearing structure (20). The grinding roller (30) has an oil inlet hole (31) and an oil return hole (32). The first end of the oil inlet hole (31) is connected to the mounting cavity (11), and the first end of the oil return hole (32) is connected to the receiving cavity (12). Lubrication station (40), including lubrication tank; The lubrication station (40) also includes: A heating oil tank is in contact with the lubricating oil tank. The heating oil tank is equipped with a heater and a temperature sensor. The heater is used to heat the oil stored in the heating oil tank, and the temperature sensor is used to detect the temperature of the oil in the heating oil tank. Both the lubricating oil tank and the heating oil tank are provided with drain ports at their bottoms, and drain ball valves are provided at the drain ports. The grinding roller assembly also includes: An oil inlet pipe (50) is provided, the first end of which is threadedly connected to the second end of the oil inlet hole (31) via a first pipe fitting (60), and the second end of the oil inlet pipe (50) is connected to the lubricating oil tank; and / or, The oil return pipe (70) has its first end threadedly connected to the second end of the oil return hole (32) via a second pipe fitting (80), and the second end of the oil return pipe (70) is connected to the lubricating oil tank. The lubricating oil station (40) further includes a first level gauge and a second level gauge. The first level gauge is installed on the lubricating oil tank to display the oil level in the lubricating oil tank. The second level gauge is installed on the heating oil tank to display the oil level in the heating oil tank.

2. The grinding roller assembly according to claim 1, characterized in that, The central axis of the oil inlet (31) is coaxial with the central axis of the grinding roller (30).

3. The grinding roller assembly according to claim 1, characterized in that, The oil return hole (32) is located below the oil inlet hole (31), and the first end of the oil return hole (32) passes through the end face of the grinding roller (30) and communicates with the receiving cavity (12).

4. The grinding roller assembly according to claim 1, characterized in that, The grinding roller assembly also includes: A first control valve is disposed on the oil inlet pipe (50) for controlling the on / off state of the oil inlet pipe (50) and / or the flow rate or velocity of the lubricating oil in the oil inlet pipe (50); and / or, A second control valve is provided on the return oil pipe (70) to control the on / off state of the return oil pipe (70) and / or the flow rate or velocity of the lubricating oil in the return oil pipe (70).

5. The grinding roller assembly according to claim 1, characterized in that, A first filter is provided between the second end of the oil inlet pipe (50) and the lubricating oil tank; and / or, a second filter is provided between the second end of the oil return pipe (70) and the lubricating oil tank.

6. The grinding roller assembly according to claim 1, characterized in that, The oil inlet (31) has a bearing oil guide hole on its wall, and the lubricant discharged from the oil outlet end of the bearing oil guide hole enters the bearing structure (20).

7. The grinding roller assembly according to claim 1, characterized in that, The base (10) includes: Mounting base (13) has the mounting cavity (11); The support base (14) is connected to the mounting base (13) and located on one side of the mounting base (13). A portion of the grinding rollers (30) are inserted into the bearing structure (20), and another portion of the grinding rollers (30) are inserted into the support base (14). An end cap (15) is connected to the mounting base (13) and located on the other side of the mounting base (13), and the end cap (15) and the mounting base (13) surround each other to form the receiving cavity (12).

8. A mill, characterized in that, The grinding roller assembly includes any one of claims 1 to 7.

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