Vibrating screen thin oil lubrication self-circulation system

Abstract

The present invention discloses a vibrating screen thin oil lubrication self-circulating system, which is respectively provided with oil supply tanks on the side walls on the front and rear sides of the vibrating screen, and the oil supply tank and the sealed bearing system are horizontally arranged, and the overall oil circuit circulation is realized after the two are connected through the oil return pipe and the oil supply pipe. After the device is arranged with the above structure, when it is in operation, the oil temperature inside the sealed bearing system rises, and the hot oil will follow the oil return pipe into the oil supply tank, and after the oil supply tank is cooled and precipitated, it will be guided back to the sealed bearing system through the oil supply pipe; furthermore, the device is also provided with an oil discharge port inside the oil supply tank, and a sedimentation area is provided on the upper part of the oil discharge port, so that the precipitated impurities can be removed, thereby ensuring that the lubricating oil inside the sealed bearing system is clean.

Description

Technical Field

[0001] The invention belongs to the technical field of vibrating screen lubrication, and in particular relates to a vibrating screen thin oil lubrication self-circulating system capable of realizing stable lubrication of the vibrating screen. Background Art

[0002] In mining machinery, its screening device needs to drive the vibrating screen to vibrate cyclically under the drive of the drive shaft. The drive shaft always runs under a large load. In order to ensure its operating stability, a lubrication system is usually added to the drive shaft to achieve continuous lubrication by adding solid lubricating oil. When the existing lubrication system is in operation, the widely used lubrication method is to install a seamless steel pipe on the periphery of the eccentric shaft, connect it with the bearing seats at both ends through the seamless steel pipe, and realize the connection of the bearing seats at both ends by filling the conduit with oil, so as to realize oil supply. However, this oil supply method has disadvantages, which are reflected in: 1. The oil supply volume is large. After the bearing seats and conduits at both ends are filled with oil at the same time, 150 liters to 200 liters of lubricating oil are required; 2. Closed lubrication, impurities in the lubricating oil cannot be discharged, which is not good for the bearings and the drive system.

[0003] According to the current drawbacks, it is very necessary to improve the existing lubrication system and improve the lubrication efficiency of the existing lubrication system. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a vibrating screen thin oil lubrication self-circulation system, which has a simple structure and uses less oil. Stable, efficient and low-cost oil supply and lubrication can be achieved through external oil injection equipment.

[0005] To achieve the above technical objectives, the present invention adopts the following scheme: a vibrating screen thin oil lubrication self-circulating system, which includes an oil supply box arranged on the front and rear side walls of the vibrating screen, a driving shaft is arranged in the vibrating screen, the driving shaft is provided with a sealed bearing system on the front and rear side walls, and the sealed bearing system is provided with bearings inside to cooperate with the driving shaft to realize driving; when the oil supply box on the front and rear side walls is connected to the sealed bearing system, their connection structure is the same; an oil return pipe and an oil supply pipe are arranged on the oil supply box, the oil supply pipe is connected to the bottom of the sealed bearing system, and the oil return pipe is connected to the sealed bearing system, which is arranged on the upper part of the oil supply pipe; when the oil supply box is set, the height of the top surface of the oil is set to be the same as the oil storage height inside the sealed bearing system or lower than the sealed bearing system, and an oil supply circuit is formed after the oil supply box and the sealed bearing system are connected through the oil supply pipe and the oil return pipe.

[0006] The oil storage capacity of the sealed bearing system is one-third of the diameter height of the bearing from the bottom upwards. The oil supply pipe is connected to the bottom of the sealed bearing system, and the oil return pipe is connected below the oil level of the oil storage part of the sealed bearing system.

[0007] The middle part of the sealed bearing system is a driving shaft, and one end of the driving shaft is connected to an external driving motor through a coupling; at least one bearing is arranged inside the sealed bearing system, and a splash-proof pressure cover is arranged on the left and right sides of the bearing respectively, and the outer side of the splash-proof pressure cover is a sealing end cover, and the sealing end cover is provided with a through threaded hole, and a positioning bolt is connected through the through threaded hole. The positioning bolt is arranged toward the sealing end cover, and the sealing end cover is squeezed and fixed to the outer edge of the bearing by squeezing the sealing end cover; an oil seal is arranged between the sealing end cover and the driving shaft.

[0008] The splash-proof pressure cover is a disc-shaped structure, and a flange is arranged on the side facing the bearing, and the bearing is squeezed by the flange.

[0009] The bottom of the anti-splash pressure cover is provided with an oil inlet, and the top of the anti-splash pressure cover is provided with an air outlet.

[0010] The front side of the fuel supply tank is provided with an observation port, the top of the fuel supply tank is a refueling port, and the bottom is provided with an oil discharge port. The fuel supply pipe is arranged above the bottom of the fuel supply tank, and its distance from the bottom of the fuel supply tank is not less than 10 cm.

[0011] The beneficial effects of the vibrating screen thin oil lubrication self-circulation system are as follows: through the above design, the device is provided with oil supply tanks on the side walls on the front and rear sides of the vibrating screen respectively, and the oil supply tank and the sealed bearing system are horizontally arranged, and the overall oil circuit circulation is realized after the two are connected through the return oil pipe and the oil supply pipe. After the device is arranged through the above structure, thin oil is used as lubricating oil. When the equipment is running, the oil temperature inside the sealed bearing system rises, and the hot oil will follow the return oil pipe into the oil supply tank. After cooling in the oil supply tank, it is guided back to the sealed bearing system through the oil supply pipe. Such circulation realizes the continuous cooling and supply of the oil temperature inside the sealed bearing system. Furthermore, the device is also provided with an oil drain port inside the oil supply tank, and a sedimentation area is provided on the upper part of the oil drain port, so that the precipitated impurities can be removed to ensure the cleanliness of the lubricating oil inside the sealed bearing system.

[0012] The invention has simple and novel structural design, is easy to use and has low maintenance cost, and is an ideal vibrating screen thin oil lubrication self-circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation structure of the oil supply tank of the vibrating screen's thin oil lubrication self-circulation system;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-section structure in the middle A direction;

[0015] Figure 3 This is a schematic diagram of the side view structure of the sealing end cover of the device;

[0016] Figure 4 This is a schematic diagram of the structure of the sealing end cover and the splash-proof pressure cover of the device;

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure of the splash-proof pressure cover;

[0018] Figure 6 for Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0019] In the attached drawings, 1. vibrating screen, 2. oil supply tank, 21. refueling port, 22. oil drain port, 23. observation port, 24. oil supply pipe, 25. oil return pipe, 3. sealed bearing system, 31. sealed end cover, 32. splash-proof pressure cover, 33. oil inlet, 34. flange, 35. positioning bolt, 36. sealing strip, 37. exhaust port, 4. drive motor, 5. coupling, 6. eccentric block, 7. bearing, 8. oil seal, 9. drive shaft. DETAILED DESCRIPTION

[0020] Referring to the figure, as shown in the attached figure,

[0021] A vibrating screen thin oil lubrication self-circulating system includes an oil supply box 2 arranged on the front and rear side walls of the vibrating screen 1, a driving shaft 9 is arranged inside the vibrating screen 1, and the driving shaft 9 is provided with a sealed bearing system 3 on the front and rear side walls, and the sealed bearing system 3 is provided with a bearing 7 inside to cooperate with the driving shaft 9 to realize driving; the connection structure of the oil supply box 2 on the front and rear side walls of the present invention is the same when connected to the sealed bearing system 3, so an oil supply box 2 is provided on the front and rear side walls of the vibrating screen 1 to supply oil to the sealed bearing system 3 separately.

[0022] When the device realizes the oil supply connection, an oil return pipe 25 is arranged above the middle of the oil supply tank 2, and an oil supply pipe 24 is arranged below the middle of the oil supply tank 2. The oil supply pipe 24 is connected to the bottom of the sealed bearing system 3, and the oil return pipe 25 is connected to the sealed bearing system 3, which is arranged at the upper part of the oil supply pipe 24; further, the internal oil storage capacity of the sealed bearing system 3 is one-third of the diameter height of the bearing from the bottom to the top, the oil supply pipe 24 is connected to the bottom of the sealed bearing system 3, and the oil return pipe 25 is connected to the top of the oil storage of the sealed bearing system 3; when the device is connected, special attention should be paid to: the design of the oil supply tank 2 The height of the device is level with the oil storage height inside the sealed bearing system 3. The oil supply box 2 and the sealed bearing system 3 are connected through the oil supply pipe 24 and the oil return pipe 25 to form an oil supply circuit. Through the above structural setting, when the device is in operation, the oil temperature inside the sealed bearing system 3 rises, and the hot oil will follow the oil return pipe 25 into the oil supply box 2. After cooling in the oil supply box 2, it is guided back to the sealed bearing system 3 through the oil supply pipe 24. Such a cycle realizes continuous cooling and supply of the oil temperature inside the sealed bearing system. This lubrication system can control the oil consumption within the range of 3-4 liters, and can realize continuous circulation of the lubricating oil, effectively reducing the lubrication temperature.

[0023] During actual operation of the device, high-speed rotation may cause the lubricating oil to be centrifugally thrown out. To prevent the above problems from occurring, the device adopts the following sealing structure: the middle part of the sealed bearing system 3 is a driving shaft 9, one end of which is connected to an external driving motor 4 via a coupling 5. An eccentric block 6 is also provided on the driving shaft, and vibration drive is achieved through the eccentric block 6; two bearings 7 are arranged side by side inside each sealed bearing system 3, and a splash-proof pressure cover 32 is provided on the left and right sides of the bearing 7 respectively, and a sealing end cover 31 is provided on the outside of the splash-proof pressure cover 32, and a through-threaded hole is provided on the sealing end cover 31, and a positioning bolt 35 is connected through the through-threaded hole, and the positioning bolt 35 is arranged toward the sealing end cover 31, and the sealing end cover 31 is squeezed and fixed to the outer edge of the bearing 7 by squeezing the sealing end cover 31; an oil seal 8 is provided between the sealing end cover 31 and the driving shaft 9. On the basis of the above structural settings, further, such as Figure 4 , 5 As shown, the splash-proof pressure cover 32 is a disc-shaped structure, and a flange 34 is provided on the side facing the bearing, through which the bearing 7 is squeezed, and a sealing strip 36 is provided between the flange 34 and the bearing 7. The bottom of the splash-proof pressure cover 32 is provided with an oil inlet 33, and the top is provided with an air outlet 37 for achieving constant pressure inside and outside. Through the above structural setting, when the bearing runs at high speed, the lubricating oil can be blocked by the splash-proof pressure cover 32 to prevent it from splashing out, and then the sealing end cover 31 cooperates with the oil seal 8 to prevent it from overflowing.

[0024] The device also has an oil purification function, and an observation port 23 is arranged on the front side of the oil supply tank 2. The top of the oil supply tank 2 is a refueling port 21, and the bottom is provided with an oil discharge port 22. The oil supply pipe 24 is arranged below the bottom of the oil supply tank, and its distance from the bottom of the oil supply tank is not less than 10 cm. The distance between the oil supply pipe 24 and the bottom of the oil tank is a sedimentation area, and the sedimentation of oil is achieved through the sedimentation area.

[0025] Summary: Through the above design, the device is provided with an oil supply tank 2 on the side walls on the front and rear sides of the vibrating screen 1 respectively. The oil supply tank 2 is horizontally connected with the sealed bearing system 3, and the return oil pipe 25 and the oil supply pipe 24 are connected between the two to realize the overall oil circulation. Furthermore, the device is also provided with an oil drain port 22 inside the oil supply tank 2. The oil drain port 22 is arranged just below the sedimentation area, so as to remove the precipitated impurities and ensure the cleanliness of the lubricating oil inside the sealed bearing system.

[0026] In summary, the device has a simple and novel structural design, is easy to use, and has low maintenance costs. It is an ideal vibrating screen thin oil lubrication self-circulation system.

Claims

1. A vibrating screen thin oil lubrication self-circulation system, characterized by: It includes an oil supply box arranged on the front and rear side walls of the vibrating screen, a driving shaft is arranged in the vibrating screen, the driving shaft is provided with a sealed bearing system on the front and rear side walls, and the sealed bearing system is provided with a bearing that cooperates with the driving shaft to realize driving; when the oil supply box on the front and rear side walls is connected to the sealed bearing system, their connection structure is the same; an oil return pipe and an oil supply pipe are arranged on the oil supply box, the oil supply pipe is connected to the bottom of the sealed bearing system, and the oil return pipe is connected to the sealed bearing system, which is arranged on the upper part of the oil supply pipe; when the oil supply box is set, the height of the top surface of the oil is set to be the same as the oil storage height inside the sealed bearing system or lower than the sealed bearing system, and the oil supply box and the sealed bearing system are connected through the oil supply pipe and the oil return pipe to form an oil supply circulation ring; the oil storage capacity of the sealed bearing system is one-third of the diameter height of the bearing from the bottom to the top, the oil supply pipe is connected to the bottom of the sealed bearing system, and the oil return pipe is connected to the oil level below the oil storage part of the sealed bearing system; the middle part of the sealed bearing system is a drive shaft, and one end of the drive shaft is connected to an external drive motor through a coupling; at least one bearing is arranged inside the sealed bearing system, and a splash-proof pressure cover is arranged on the left and right sides of the bearing respectively, and the outer side of the splash-proof pressure cover is a sealing end cover, and a through threaded hole is arranged on the sealing end cover, and a positioning bolt is connected through the through threaded hole, and the positioning bolt is arranged toward the sealing end cover, and the sealing end cover is squeezed and fixed to the outer edge of the bearing by squeezing the sealing end cover; an oil seal is arranged between the sealing end cover and the driving shaft; The splash-proof pressure cover is a disc-shaped structure, and a flange is provided on the side facing the bearing, through which the bearing is squeezed; The anti-splash pressure cover is provided with an oil inlet at the bottom and an air outlet at the top; The front side of the fuel supply tank is provided with an observation port, the top of the fuel supply tank is a refueling port, and the bottom is provided with an oil discharge port. The fuel supply pipe is arranged above the bottom of the fuel supply tank, and its distance from the bottom of the fuel supply tank is not less than 10 cm.

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