Bearing bush structure of ball mill

Abstract

The utility model discloses a bearing bush structure of a ball mill, which belongs to the technical field of ball mill equipment and comprises an upper bearing bush and a lower bearing bush, the upper bearing bush comprises an upper bearing bush base shell and an upper bearing bush lining fixedly connected to the inner side of the upper bearing bush base shell, and the lower bearing bush comprises a lower bearing bush base shell and a lower bearing bush lining fixedly connected to the inner side of the lower bearing bush base shell. Solid lubricants are installed on the inner walls of the upper bearing bush lining and the lower bearing bush lining, an oil injection hole penetrating through the upper bearing bush base shell and the upper bearing bush lining is formed in the top of the upper bearing bush, cavities communicated with each other are connected to the outer walls of the upper bearing bush base shell and the lower bearing bush base shell, and positioning rings are fixedly connected to the two ends of the upper bearing bush base shell and the two ends of the lower bearing bush base shell. Through the two-layer structural design of the base shell and the lining, the base shell is made of cast iron, and the lining is made of babbitt metal, so that the cost can be saved under the condition that the structural strength is not influenced; and through the arrangement of the cavity, vibration and sound can be absorbed, and the noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to a ball mill device, in particular to a bearing bush structure of a ball mill, and belongs to the technical field of ball mill equipment. Background Art

[0002] The bearing is an important part of the ball mill. The bearing is installed on the ball mill body and the bearing seat, and the lubrication of the engine oil is used to ensure the normal operation of the bearing. The function of the bearing is to support the crankshaft for rotating motion, maintain the rotation accuracy, and reduce the friction and wear between the shaft and the bearing. During use, the bearing will be impacted by the alternating load generated by the rotating shaft, causing vibration and noise. In addition, in order to ensure the structural strength, the bearing is generally set to a smooth inner surface, which causes the lubricating oil to enter slowly and is not easy to distribute the oil evenly, which easily leads to direct friction between the shaft and the bearing, resulting in burning of the bearing. According to the Chinese utility model patent (application number: 202020239312.9), a bearing structure of a ball mill is disclosed. The bearing structure of the ball mill is installed on both sides of the body of the ball mill, including a bearing body, which is semicircular, and its inner surface is evenly distributed with a number of oil distribution grooves, and the oil distribution groove is provided with a plurality of oil holes that penetrate the outer wall of the bearing body, and the oil distribution groove is a mesh groove structure. The utility model aims at the deficiencies of the prior art and provides a bearing bush structure of a ball mill with reliable performance, which solves the long-standing problems of uneven lubrication and severe bearing bush wear of the ball mill.

[0003] However, the device still has the following problems: during use, the bearing shell will be impacted by the alternating load generated by the rotating shaft, which will produce vibration and noise. In addition, the inner surface of the bearing shell is arranged in a grid shape, which will also cause uneven oil distribution.

[0004] The utility model proposes a new solution to the above problems. Utility Model Content

[0005] The main purpose of the utility model is to solve the problems that the existing bearings will be impacted by the alternating loads generated by the rotating shaft during use, which will cause vibration and noise, and the existing bearings will have uneven oil distribution, which will cause the bearings to burn if used directly, and to provide a bearing structure for a ball mill.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A bearing structure for a ball mill comprises an upper bearing and a lower bearing, wherein the upper bearing comprises an upper bearing base shell and an upper bearing liner fixedly connected to the inner side of the upper bearing base shell, and the lower bearing comprises a lower bearing base shell and a lower bearing liner fixedly connected to the inner side of the lower bearing base shell, solid lubricants are installed on the inner walls of the upper bearing liner and the lower bearing liner, an oil filling hole penetrating the upper bearing base shell and the upper bearing liner is opened on the top of the upper bearing, the outer walls of the upper bearing base shell and the lower bearing base shell are connected to mutually connected cavities, and positioning rings are fixedly connected to both ends of the upper bearing base shell and the lower bearing base shell.

[0008] Preferably, wedge-shaped grooves are provided on the inner walls of the upper bearing base shell and the lower bearing base shell.

[0009] Preferably, wedge blocks that cooperate with the wedge-shaped grooves are fixedly connected to the outer walls of the upper bearing liner and the lower bearing liner.

[0010] Preferably, mounting holes cooperating with the solid lubricant are formed through the inner walls of the upper bearing liner and the lower bearing liner.

[0011] Preferably, an oil filling groove interconnected with the oil filling hole is provided on the inner wall of the upper bearing liner.

[0012] Preferably, a plurality of diversion grooves are provided on both sides of the oil filling groove.

[0013] Preferably, a drainage chute connected to the diversion groove is provided on the top of the inner wall of the lower bearing liner.

[0014] Preferably, the upper bearing lining and the lower bearing lining are both babbitt alloy bearing linings.

[0015] Preferably, the upper bearing shell and the lower bearing shell are combined into a circle.

[0016] Preferably, the upper bearing shell and the lower bearing shell are both cast iron shells.

[0017] The beneficial technical effects of the utility model are as follows: according to the bearing structure of the ball mill of the utility model, a two-layer structure design of a base shell and an inner liner is adopted, wherein the base shell is made of cast iron and the inner liner is made of babbitt alloy, which can save costs without affecting the structural strength; through the setting of the cavity, vibration and sound can be absorbed to reduce noise; through the setting of the solid lubricant, the bearing can operate in the case of uneven distribution of the lubricating oil, thereby increasing the service life of the bearing and preventing the bearing from burning due to direct friction of the shaft with the bearing due to uneven oil distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a disassembled diagram of the overall structure of a preferred embodiment provided by the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of a preferred embodiment provided by the utility model;

[0020] Figure 3 This is a diagram showing the overall structure of a preferred embodiment provided by the utility model;

[0021] Figure 4 A schematic diagram of the upper bearing shell structure according to a preferred embodiment of the utility model;

[0022] Figure 5 A schematic diagram of the upper bearing lining structure according to a preferred embodiment of the utility model;

[0023] Figure 6 The present invention is a schematic diagram of a lower bearing lining structure according to a preferred embodiment of the present invention.

[0024] In the figure: 1. upper bearing; 2. lower bearing; 3. upper bearing base shell; 4. upper bearing lining; 5. lower bearing base shell; 6. lower bearing lining; 7. solid lubricant; 8. oil filling hole; 9. cavity; 10. positioning ring; 11. wedge groove; 12. wedge block; 13. mounting hole; 14. oil filling groove; 15. diverter groove; 16. drainage chute. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0026] like Figure 1-Figure 6 As shown, the bearing structure of the ball mill provided in this embodiment includes an upper bearing 1 and a lower bearing 2. The upper bearing 1 includes an upper bearing base shell 3 and an upper bearing liner 4 fixedly connected to the inner side of the upper bearing base shell 3. The lower bearing 2 includes a lower bearing base shell 5 and a lower bearing liner 6 fixedly connected to the inner side of the lower bearing base shell 5. Solid lubricants 7 are installed on the inner walls of the upper bearing liner 4 and the lower bearing liner 6. An oil filling hole 8 penetrating the upper bearing base shell 3 and the upper bearing liner 4 is opened on the top of the upper bearing 1. The outer walls of the upper bearing base shell 3 and the lower bearing base shell 5 are connected with cavities 9 that are interconnected. Positioning rings 10 are fixedly connected at both ends of the upper bearing base shell 3 and the lower bearing base shell 5.

[0027] Through the two-layer structural design of base shell and inner liner, the base shell is made of cast iron and the inner liner is made of babbitt alloy, which can save costs without affecting the structural strength; through the setting of cavity 9, it can absorb vibration and sound, and play a role in noise reduction; through the setting of solid lubricant 7, the bearing can operate in the case of uneven oil distribution, prevent burning of the bearing, increase the service life of the bearing, and prevent the bearing from burning due to direct friction of the shaft with the bearing due to uneven oil distribution.

[0028] In this embodiment, if Figure 3 , Figure 4 and Figure 5 As shown, the inner walls of the upper bearing shell 3 and the lower bearing shell 5 are provided with wedge-shaped grooves 11, and the outer walls of the upper bearing liner 4 and the lower bearing liner 6 are fixedly connected with wedge blocks 12 that cooperate with the wedge-shaped grooves 11. The wedge-shaped grooves 11 and the wedge blocks 12 make the base shell and the liner firmly combined.

[0029] In this embodiment, if Figure 3 , Figure 5 and Figure 6 As shown, mounting holes 13 cooperating with solid lubricants 7 are provided through the inner walls of the upper bearing liner 4 and the lower bearing liner 6, an oil filling groove 14 communicating with the oil filling hole 8 is provided on the inner wall of the upper bearing liner 4, multiple diverter grooves 15 are provided on both sides of the oil filling groove 14, and a drainage chute 16 communicating with the diverter groove 15 is provided on the top of the inner wall of the lower bearing liner 6. By providing the diverter grooves 15 and the drainage chute 16, the upper bearing liner 4 is subjected to less force, and more diverter grooves 15 are arranged to increase the amount of lubricating oil entering. The lower bearing liner 6 is the main force bearing part, so the diverter groove 15 is not provided to prevent affecting the structural strength; by providing the drainage chute 16, the lubricating oil can enter between the shaft and the lower bearing liner 6 faster.

[0030] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the upper bearing liner 4 and the lower bearing liner 6 are both babbitt alloy bearing liner, the upper bearing 1 and the lower bearing 2 are combined into a circle, and the upper bearing base shell 3 and the lower bearing base shell 5 are both cast iron base shells. Through the two-layer structure design of base shell and liner, the base shell uses cast iron and the liner uses babbitt alloy, which can save costs without affecting the structural strength.

[0031] In this embodiment, if Figure 1-Figure 6 As shown, the working process of the bearing structure of a ball mill provided in this embodiment is as follows:

[0032] Fix the lower bearing 2 on the base, place the hollow shaft of the grinder on the inner side of the lower bearing 2, cover the upper bearing 1, and install the sealing shell. Inject lubricating oil into the oil filling groove 14 through the oil filling hole 8, and then enter between the shaft and the lower bearing liner 6 through the diverter groove 15 and the drainage chute 16 to play a lubricating role. When it is just running, the lubricating oil is unevenly distributed, and the solid lubricant 7 is evenly distributed to temporarily play a lubricating role. The cavity 9 can absorb vibration and sound, and play a role in noise reduction.

[0033] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A bearing structure of a ball mill, characterized in that: The invention comprises an upper bearing (1) and a lower bearing (2), wherein the upper bearing (1) comprises an upper bearing base shell (3) and an upper bearing liner (4) fixedly connected to the inner side of the upper bearing base shell (3), and the lower bearing (2) comprises a lower bearing base shell (5) and a lower bearing liner (6) fixedly connected to the inner side of the lower bearing base shell (5). Solid lubricants (7) are installed on the inner walls of the upper bearing liner (4) and the lower bearing liner (6). An oil filling hole (8) penetrating the upper bearing base shell (3) and the upper bearing liner (4) is provided at the top of the upper bearing (1). The outer walls of the upper bearing base shell (3) and the lower bearing base shell (5) are connected to mutually connected cavities (9), and positioning rings (10) are fixedly connected to both ends of the upper bearing base shell (3) and the lower bearing base shell (5).

2. A bearing structure for a ball mill as claimed in claim 1, characterized in that: Wedge-shaped grooves (11) are provided on the inner walls of the upper bearing shell (3) and the lower bearing shell (5).

3. A bearing structure for a ball mill as claimed in claim 2, characterized in that: Wedge blocks (12) that cooperate with the wedge-shaped grooves (11) are fixedly connected to the outer walls of the upper bearing liner (4) and the lower bearing liner (6).

4. A bearing structure for a ball mill as claimed in claim 1, characterized in that: The inner walls of the upper bearing liner (4) and the lower bearing liner (6) are penetrated by mounting holes (13) that match the solid lubricant (7).

5. The bearing structure of a ball mill according to claim 1, characterized in that: An oil injection groove (14) which is in communication with the oil injection hole (8) is provided on the inner wall of the upper bearing liner (4).

6. A bearing structure for a ball mill as claimed in claim 5, characterized in that: A plurality of diversion grooves (15) are provided on both sides of the oil filling groove (14).

7. A bearing structure for a ball mill as claimed in claim 6, characterized in that: The top of the inner wall of the lower bearing liner (6) is provided with a drainage chute (16) which is connected to the diversion groove (15).

8. The bearing structure of a ball mill according to claim 1, characterized in that: The upper bearing lining (4) and the lower bearing lining (6) are both babbitt alloy bearing linings.

9. A bearing structure for a ball mill as claimed in claim 1, characterized in that: The upper bearing shell (1) and the lower bearing shell (2) are combined into a circular shape.

10. The bearing structure of a ball mill according to claim 1, characterized in that: The upper bearing shell (3) and the lower bearing shell (5) are both cast iron shells.

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