Oil injection device for magnetic system shaft bearing of magnetic separator

Abstract

The magnetic separator magnetic system shaft bearing oiling device comprises a magnetic system shaft and a bearing arranged on the magnetic system shaft in a sleeving mode, the bearing is arranged in a containing cavity of a bearing chamber, an end cover is arranged on the outer side of the containing cavity of the bearing chamber in a covering mode, and a first oil outlet channel is reserved between the bottom face of the containing cavity of the bearing chamber and the end face of one side of the bearing. A bolt is installed on the end face of the magnetic system shaft, an oil inlet through hole is formed in the bolt in the axial direction, an oil injection nozzle is installed at the inlet end of the oil inlet through hole, a long oil conveying hole is formed in the position, right opposite to the oil inlet through hole, of the magnetic system shaft in the axial direction, and the inlet end of the long oil conveying hole is communicated with the oil inlet through hole of the bolt. A first radial hole is formed in the position, right opposite to the first oil outlet channel, of the magnetic system shaft in the radial direction, one end of the first radial hole communicates with the long oil conveying hole, and the other end of the first radial hole communicates with the first oil outlet channel. According to the oil injection device for the magnetic system shaft bearing of the magnetic separator, oil can be directly injected when the magnetic separator operates, shutdown is not needed, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of magnetic separator technology, and more specifically, to a magnetic separator magnetic system shaft bearing oil injection device. Background Technology

[0002] A magnetic separator is a device used for mineral separation. Its main components include a cylinder containing a magnetic shaft and a magnetic system. The magnetic shaft is the core component of the magnetic separator, serving as the support structure for the magnetic system. It is rotatably connected to the cylinder via bearings and bearing housings. During operation, the bearings require frequent lubrication to lubricate, cool, withstand pressure, and extend their lifespan. Figure 1 This is a diagram of the oiling structure of the magnetic system shaft of an existing magnetic separator, for reference. Figure 1 A bearing 11 is fitted onto the magnetic shaft 1, and the bearing 11 is located inside the bearing chamber 12. Bearing covers 13 are provided on both sides of the bearing 11. Oil injection holes 14 leading to the bearing 11 are opened on the bearing covers 13, and oil injection nozzles 15 are installed on the oil injection holes 14. In the magnetic separator, the magnetic shaft 1 is mounted on the separator's support, the cylinder is mounted on the magnetic shaft 1, and the bearing chamber 12 is mounted on the cylinder. During the operation of the magnetic separator, both the cylinder and the bearing chamber 12 rotate on the magnetic shaft 1. Therefore, in this existing bearing oil injection structure, the oil injection nozzle 15 is mounted on a moving part, requiring the machine to be stopped before oil injection can be performed. This has the following drawbacks: 1. The magnetic separator requires stopping the machine for lubrication and oiling. Each time oiling is done, the equipment stops running completely, interrupting production and significantly reducing equipment operating rate and production efficiency.

[0003] 2. Each oil filling requires stopping the machine, which increases the number of times the equipment is started and stopped, increases start-stop losses, and frequent start-stops exacerbate the wear and stress on mechanical and electrical components, shortening the equipment's lifespan.

[0004] 3. High maintenance costs: Unplanned downtime leads to production losses and requires coordination of production schedules, resulting in increased overall maintenance costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an oil injection device for the magnetic system shaft bearing of a magnetic separator, which can inject oil directly during the operation of the magnetic separator without stopping the machine, thereby improving production efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A magnetic separator magnetic shaft bearing oil injection device includes a magnetic shaft and a bearing sleeved on the magnetic shaft. The bearing is located in a bearing chamber, and an end cap is provided on the outside of the bearing chamber. A first oil outlet channel is provided between the bottom surface of the bearing chamber and one end face of the bearing. A bolt is installed on the end face of the magnetic shaft. The bolt has an axially oriented oil inlet hole, and an oil injection nozzle is installed at the inlet end of the oil inlet hole. An elongated oil delivery hole is provided on the magnetic shaft directly opposite the oil inlet hole, and the inlet end of the elongated oil delivery hole is connected to the oil inlet hole of the bolt. A first radial hole is provided on the magnetic shaft directly opposite the first oil outlet channel, one end of the first radial hole is connected to the elongated oil delivery hole, and the other end of the first radial hole is connected to the first oil outlet channel.

[0007] As a further improvement, both the oil inlet hole and the elongated oil delivery hole are circular holes, and the diameter of the elongated oil delivery hole is larger than the oil injection diameter of the oil nozzle.

[0008] As a further improvement, the bearing chamber has a stepped ring platform at the bottom of its receiving cavity, the outer ring of the bearing is directly opposite the outermost step of the stepped ring platform, and a sealing element is provided at the bottom center of the bearing chamber, forming the first oil outlet channel between the sealing element and the bearing.

[0009] As a further improvement, a second oil outlet channel is provided between the other end face of the bearing and the end cover. A second radial hole is provided on the magnetic shaft in the radial direction opposite to the second oil outlet channel. One end of the second radial hole is connected to the elongated oil delivery hole, and the other end of the second radial hole is connected to the second oil outlet channel.

[0010] As a further improvement, an annular recess is provided in the middle of the end cap, and a sealing element is provided at the bottom of the annular recess. The sealing element and the raceway of the bearing form the second oil outlet channel.

[0011] As a further improvement, the oil inlet hole, the elongated oil delivery hole, the first radial hole, and the second radial hole are all circular holes.

[0012] As a further improvement, the seal is a skeleton oil seal.

[0013] After adopting the above technical solution, the beneficial effects of the present invention are: The present invention relates to a magnetic separator magnetic shaft bearing lubrication device. The lubrication nozzle is mounted on a bolt, which is installed on a stationary magnetic shaft. Since the magnetic shaft remains stationary during operation, lubrication can be directly applied through the lubrication nozzle. The lubricating oil enters the elongated oil delivery hole of the magnetic shaft through the oil inlet hole of the bolt, then passes through the first radial hole into the first oil outlet channel, and finally enters the bearing raceway for lubrication. This device achieves online lubrication without stopping the machine, offering the following advantages: 1. It ensures continuous operation of the equipment, and lubrication can be completed during normal operation of the equipment, eliminating the need for frequent shutdowns due to lubrication, completely eliminating downtime caused by lubrication, maximizing equipment utilization, and improving work efficiency.

[0014] 2. Improve equipment reliability, enabling more timely and even lubrication, maintaining key components such as bearings in optimal lubrication condition, reducing wear, and extending service life.

[0015] 3. Reduce overall costs, avoid production losses caused by frequent shutdowns, reduce equipment damage and consumption caused by refueling and start-stop, reduce unplanned downtime, reduce maintenance costs, and significantly improve operating efficiency and economic benefits.

[0016] 4. Safer and more convenient operation: Oil is directly injected at the shaft end of the magnetic separator, making operation convenient and efficient. The magnetic separator magnetic shaft bearing oil injection device of this invention has a second oil outlet channel between the other end face of the bearing and the end cover. A second radial hole is radially formed on the magnetic shaft opposite the second oil outlet channel. One end of the second radial hole connects to the elongated oil supply hole, and the other end connects to the second oil outlet channel. In this way, oil enters the elongated oil supply hole of the magnetic shaft through the bolt's oil inlet hole, then passes through the second radial hole into the second oil outlet channel, thus entering the bearing raceway from the other side of the bearing for lubrication. This achieves simultaneous oil injection from both sides of the bearing into the bearing raceway, ensuring complete oil injection and good lubrication.

[0017] The oil injection device for the magnetic separator magnetic system shaft bearing of the present invention has both an oil inlet hole and an elongated oil delivery hole as circular holes. The diameter of the elongated oil delivery hole is larger than the diameter of the oil inlet hole but smaller than the outer diameter of the bolt shank. The larger diameter of the elongated oil delivery hole increases the oil injection speed and makes the oil delivery channel less prone to clogging. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the existing magnetic separator magnetic system shaft bearing oil injection device; Figure 2 This is a schematic diagram of the structure of the oil injection device for the magnetic separator magnetic system shaft bearing of the present invention (the arrows in the figure indicate the direction of oil injection). Figure 3 yes Figure 2 A schematic diagram of the bearing chamber in the diagram; Figure 4 yes Figure 2 A schematic diagram of the connection structure between the oil nozzle and the bolt; Figure 5 yes Figure 2 A schematic diagram of the bearing structure in the diagram; Figure 6 yes Figure 2 A schematic diagram of the structure of part A in the diagram; Figure 7 yes Figure 2 A schematic diagram of the connection structure between the oil filler nozzle, bolts, and magnetic shaft; Figure 8 yes Figure 2 A schematic diagram of the connection structure of the oil nozzle, bolts, magnetic shaft, bearings and end caps; In the diagram: 1-Magnetic shaft; 11-Bearing; 12-Bearing chamber; 13-Bearing cover; 14-Oil inlet hole; 15-Oil nozzle; 2-Magnetic shaft; 21-Elongated oil inlet hole; 22-First radial hole; 23-Second radial hole; 3-Bearing; 31-Raceway; 4-Bearing chamber; 41-Receiving cavity; 5-Bolt; 51-Oil inlet hole; 6-Oil nozzle; 7-End cap; 71-Annular recess; 8-First oil outlet channel; 9-Second oil outlet channel; 10-Seal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] Reference Figures 2 to 8 The magnetic separator magnetic shaft bearing oil injection device of this embodiment includes a magnetic shaft 2 and a bearing 3 sleeved on the magnetic shaft 2. The bearing 3 is located in the receiving cavity 41 of the bearing chamber 4. An end cover 7 is provided on the outside of the receiving cavity 41 of the bearing chamber 4. A first oil outlet channel 8 is left between the bottom surface of the receiving cavity 41 of the bearing chamber 4 and one side end face of the bearing 3. A bolt 5 is installed on the end face of the magnetic shaft 2. An oil inlet hole 51 is opened in the middle of the bolt 5 along the axial direction. An oil injection nozzle 6 is installed at the inlet end of the oil inlet hole 51. An elongated oil delivery hole 21 is opened in the magnetic shaft 2 along the axial direction opposite to the oil inlet hole 51. The inlet end of the elongated oil delivery hole 21 is connected to the oil inlet hole 51 of the bolt 5. A first radial hole 22 is opened in the magnetic shaft 2 along the radial direction opposite to the first oil outlet channel 8. One end of the first radial hole 22 is connected to the elongated oil delivery hole 21, and the other end of the first radial hole 22 is connected to the first oil outlet channel 8.

[0021] Reference Figure 2 and Figure 3 The bearing chamber 4 has a stepped ring platform at the bottom of its receiving cavity 41. The bearing 3 includes an inner ring, a raceway, and an outer ring. The outer ring of the bearing 3 is directly opposite the outermost step of the stepped ring platform. The inner ring and raceway of the bearing 3 are directly opposite the bottom of the receiving cavity 41 of the bearing chamber 4. A seal 10 is provided at the bottom center of the receiving cavity 41 of the bearing chamber 4. The space between the seal 10 and the end face of the bearing 3 forms a first oil outlet channel 8. The oil inlet 6, oil inlet hole 51, elongated oil delivery hole 21, first radial hole 22, and first oil outlet channel 8 are connected to form an oil injection channel from the oil inlet 6 to the end face of the bearing 3. This structure of the oil inlet 6 being mounted on a stationary body is such that the oil inlet 6 is mounted on the bolt 5, and the bolt 5 is mounted on the stationary magnetic shaft 2. When the magnetic separator is running, the magnetic shaft 2 is stationary. Therefore, when the magnetic separator is running, oil can also be directly injected through the oil inlet 6. The lubricating oil enters the elongated oil delivery hole 21 of the magnetic shaft 2 through the oil inlet hole 51 of the bolt 5, and then enters the first oil outlet channel 8 through the first radial hole 22, thereby entering the raceway 31 of the bearing 3 for lubrication. This system enables online lubrication without downtime, ensuring continuous equipment operation. Lubrication can be completed during normal operation, eliminating frequent shutdowns for lubrication and maximizing equipment utilization, thus improving work efficiency. It also enhances equipment reliability, allowing for more timely and even lubrication, maintaining critical components such as bearings in optimal lubrication condition, reducing wear, and extending service life. Furthermore, it lowers overall costs by avoiding production losses caused by frequent downtime, reducing equipment damage and wear from lubrication start-stop cycles, minimizing unplanned downtime, lowering maintenance costs, and significantly improving operational efficiency and economic benefits. Additionally, direct lubrication at the shaft end of the magnetic shaft 2 makes operation safer and more convenient.

[0022] The oil inlet hole 51, the elongated oil delivery hole 21, the first radial hole 22, and the second radial hole 23 are all circular holes. The sealing element 10 can be a skeleton oil seal. The diameter of the elongated oil delivery hole 21 is larger than the oil injection diameter of the oil nozzle 6. The larger diameter of the elongated oil delivery hole 21 increases the oil injection speed and makes the oil delivery channel less prone to clogging. The end diameter of the oil inlet hole 51 can also be larger than the diameter of the oil nozzle 6.

[0023] A second oil outlet channel 9 is provided between the other end face of the bearing 3 and the end cover 7. A second radial hole 23 is provided on the magnetic shaft 2 in the radial direction opposite to the second oil outlet channel 9. One end of the second radial hole 23 is connected to the elongated oil delivery hole 21, and the other end of the second radial hole 23 is connected to the second oil outlet channel 9.

[0024] Reference Figure 8 and Figure 2Specifically, an annular recess 71 is provided in the middle of the end cap 7, and a sealing element 10 is provided at the bottom of the annular recess 71. The space between the sealing element 10 and the raceway 31 of the bearing 3 forms a second oil outlet channel 9. In this way, the grease nipple 6, the oil inlet hole 51, the elongated oil delivery hole 21, the second radial hole 23, and the second oil outlet channel 9 are connected to form an oil injection channel from the grease nipple 6 to the other end face of the bearing 3. The lubricating oil enters the elongated oil delivery hole 21 of the magnetic shaft 2 through the oil inlet hole 51 of the bolt 5, and then enters the second oil outlet channel 9 through the second radial hole 23, thereby entering the raceway 31 of the bearing 3 from the other side of the bearing 3 for lubrication. This achieves simultaneous oil injection from both sides of the bearing 3 into the raceway 31 of the bearing 3, ensuring complete oil injection and good lubrication effect.

[0025] The above are examples of the preferred embodiments of the present invention, and the parts not described in detail are common knowledge to those skilled in the art. The scope of protection of the present invention is determined by the content of the claims, and any equivalent modifications made based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A magnetic separator magnetic shaft bearing oil injection device, comprising a magnetic shaft and a bearing sleeved on the magnetic shaft, the bearing being disposed within a bearing chamber, and an end cover being provided on the outer side of the bearing chamber, characterized in that: A first oil outlet channel is provided between the bottom surface of the bearing housing and one end face of the bearing. A bolt is installed on the end face of the magnetic shaft. An oil inlet hole is provided on the bolt along the axial direction. An oil injection nozzle is installed at the inlet end of the oil inlet hole. An elongated oil delivery hole is provided on the magnetic shaft along the axial direction opposite to the oil inlet hole. The inlet end of the elongated oil delivery hole is connected to the oil inlet hole of the bolt. A first radial hole is provided on the magnetic shaft along the radial direction opposite to the first oil outlet channel. One end of the first radial hole is connected to the elongated oil delivery hole, and the other end of the first radial hole is connected to the first oil outlet channel.

2. The oil injection device for the magnetic separator magnetic shaft bearing according to claim 1, characterized in that: Both the oil inlet hole and the elongated oil delivery hole are circular holes, and the diameter of the elongated oil delivery hole is larger than the oil injection diameter of the oil nozzle.

3. The oil injection device for the magnetic separator magnetic system shaft bearing according to claim 2, characterized in that: The bearing chamber has a stepped ring platform at the bottom of its accommodating cavity. The outer ring of the bearing is directly opposite the outermost step of the stepped ring platform. A sealing element is provided at the bottom center of the bearing chamber, and the sealing element and the bearing form the first oil outlet channel.

4. The oil injection device for the magnetic separator magnetic system shaft bearing according to any one of claims 1 to 3, characterized in that: A second oil outlet channel is provided between the other end face of the bearing and the end cover. A second radial hole is provided on the magnetic shaft in the radial direction opposite to the second oil outlet channel. One end of the second radial hole is connected to the elongated oil delivery hole, and the other end of the second radial hole is connected to the second oil outlet channel.

5. The oil injection device for the magnetic separator magnetic system shaft bearing according to claim 4, characterized in that: The end cap has an annular recess in the middle, and a sealing element is provided at the bottom of the annular recess. The sealing element and the raceway of the bearing form the second oil outlet channel.

6. The oil injection device for the magnetic separator magnetic system shaft bearing according to claim 5, characterized in that: Both the first radial hole and the second radial hole are circular holes.

7. The oil injection device for the magnetic separator magnetic system shaft bearing according to claim 3, characterized in that: The sealing element is a skeleton oil seal.

Images