Closed type rolling bearing oiling device
By using a closed-loop rolling bearing lubrication device, an external threaded nozzle and a screw-cap grease cup are used to form a closed lubrication passage, which solves the problems of high oil resistance and mineral sand ingress, achieving efficient lubrication and sealing, and significantly improving the service life and ease of operation of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, open-type oil injection methods result in high oil circuit resistance, low oil pressure, less lubricating oil entering the bearing, and easy entry of mineral sand into the bearing, reducing service life and increasing maintenance frequency.
A closed-loop rolling bearing lubrication device is adopted, including an external threaded nozzle, a screw-cap grease cup, an external sleeve, and a nut wrench, forming a closed lubrication passage. The oil inlet pressure is increased by the operating lever to ensure that the lubricating oil enters the bearing and forms a sealing oil film.
It improves oil injection efficiency, reduces lubricant waste, significantly extends bearing life, and reduces worker labor intensity and maintenance frequency.
Smart Images
Figure CN224094227U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to rolling bearing oiling device technical field, especially relate to the closed type rolling bearing oiling device of oil circuit long and oil circuit resistance big. BACKGROUND
[0002] The wet type permanent magnet cylinder type magnetic separator is widely applied in the ore dressing plant, and the lubrication of the cylinder main shaft bearing is an important link for ensuring the separation performance and mechanical performance of the magnetic separator.
[0003] 1. When oiling, the butter is first smeared into a 400mm-long slotted plastic tube, then the tube is inserted into the fixed main shaft center oil hole, and then the solid plastic plug is used to push the butter in the tube into the internal bearing. Because the oil circuit is about 550mm long and has a right-angle bend at the end, the oil circuit resistance is large, the open type oiling method has low oil pressure, and the butter entering the bearing is very small or even cannot enter, which causes poor bearing lubrication, low service life and frequent maintenance and replacement.
[0004] 2. Because the oiling method is open type, a large amount of butter flows back from the oil hole during the pushing process of the plug, so multiple repeated operations are required, the labor intensity and workload of the post are large, the working time is long, and the butter is wasted.
[0005] 3. The rotating bearing gland and the fixed main shaft have a gap, and in daily operation, the mineral sand flows into the bearing from the gap, which aggravates the bearing wear, reduces the service life of the bearing, increases the maintenance amount and reduces the equipment operation rate. INVENTION CONTENTS
[0006] The utility model aims at providing a closed type rolling bearing oiling device which is light and durable, easy to operate and has high oiling efficiency.
[0007] The closed type rolling bearing oiling device of the utility model, comprising a screw cap type butter cup with an external thread nozzle, is characterized in that: an external sleeve, a nut wrench and a control rod are further included, the external sleeve and the nut wrench are respectively threadedly connected to the external thread nozzle, one end of the external thread nozzle is threadedly connected to an oiling pipe, and the other end is threadedly connected to a filling port of the screw cap type butter cup, the nut wrench is composed of a nut threadedly connected to the external thread nozzle and two steel rods symmetrically welded to the nut, one end of the nut side of the nut wrench is closely connected to the filling port of the screw cap type butter cup, and the other end is closely connected to the external sleeve, and the control rod is fixed to the screw cap of the screw cap type butter cup through a bolt.
[0008] Preferably, the external thread nozzle has a diameter of 20mm and a length of 40mm.
[0009] Preferably, the joystick consists of a rocker arm and a handle, and the rocker arm is 300mm long.
[0010] The advantages of this utility model are:
[0011] (1) By using a nut wrench to screw one end of the external threaded nozzle into the oil filling hole, a closed oil filling passage is formed between the screw-cap grease cup and the oil filling hole, ensuring oil pressure, saving lubricating oil, and solving the problems of low oil pressure, low oil intake, or no oil intake.
[0012] (2) The control lever significantly lengthens the rotation arm of the oil cup cap, thereby increasing the oil inlet pressure. The increased pressure can also push the yellow glycerin out from the gap between the bearing cap and the main shaft to form a sealing oil film, solving the problem of mineral sand flowing into the bearing and wearing the bearing, and significantly improving the service life of the bearing. Attached Figure Description
[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;
[0014] Fig. 2 This is a schematic diagram showing the connection between the present invention and the oil injection hole of the main shaft bearing of the magnetic separator cylinder. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] like Figs. 1-2 As shown, the closed rolling bearing oil injection device of this utility model includes a screw-cap grease cup 2 with an external threaded nozzle 1. The device is characterized by further including an external sleeve 4, a nut wrench, and an operating lever. The external sleeve 4 and the nut wrench are respectively threaded onto the external threaded nozzle 1. One end of the external threaded nozzle 1 is threadedly connected to the oil injection pipe 7, and the other end is threadedly connected to the filling port 3 of the screw-cap grease cup. The external threaded nozzle has a diameter of 20mm and a length of 40mm. This diameter and length not only facilitate the entry of grease into the grease injection hole, but also make it easy to install the nut wrench. The nut wrench consists of a nut 51 and two steel rods 52 symmetrically welded to the nut 51. The nut 51 of the nut wrench is threaded onto an external threaded nozzle. One end of the nut 51 of the nut wrench is in close contact with the filling port 3 of the screw-cap grease cup, and the other end is in close contact with the external sleeve 4. The function of the nut wrench is to screw one end of the external threaded nozzle into the grease injection hole 7, so that the screw-cap grease cup 2 and the grease injection hole 7 form a closed grease injection passage, ensuring grease injection pressure and saving lubricating oil.
[0017] The control lever described in this utility model is fixed to the outside of the screw-on grease cup by bolts. The control lever consists of a rocker arm 61 and a handle 62. The rocker arm is 300mm long. Its long rocker arm can significantly increase the rotation arm of the grease cup screw cap, thereby increasing the oil inlet pressure.
[0018] The working principle of this utility model is as follows:
[0019] First, fill the glycerin into the grease cup cap. Then, detachably connect the threaded grease nozzle 1 to the filling port 3 of the grease cup. Next, put the nut wrench and the external sleeve 4 onto the grease nozzle. Tighten the threaded grease nozzle and the grease tube with the nut wrench to form a closed integrated grease filling structure.
[0020] When adding oil, hold the nut wrench with your left hand to prevent the oil nozzle from turning, and hold the long rocker arm with your right hand to screw the cap into the thread of the grease cup. The high oil pressure easily adds all the grease into the bearing inside. At the same time, the high oil pressure forces the grease out from the gap between the bearing cap and the fixed spindle to form an oil seal, preventing mineral sand from flowing into the bearing. This provides good lubrication and significantly extends the service life of the bearing.
[0021] First, fill the glycerin into the screw cap of the grease cup. Then, connect the grease nipple to the filling port 3 of the grease cup. Next, put the nut wrench and the external sleeve 4 onto the grease nipple. Tighten the grease nipple to the filling port of the grease cup and the grease cup with the nut wrench to make it a whole. Finally, put the grease nipple back on.
[0022] During lubrication, hold the steel bar 52 of the nut wrench with your left hand to prevent the lubrication nozzle 1 from rotating, and hold the long crank handle with your right hand. Screw the cap clockwise into the threaded part of the grease cup body, creating pressure inside the grease cup. Under the pressure of the cap, the grease inside the cap is squeezed out and screwed into the bearing 9 through the lubrication tube. The increased pressure also forces the grease out from the gap between the bearing cap 8 and the main shaft 9, forming a sealing oil film. This solves the problem of mineral sand flowing into the bearing and causing wear, significantly improving the bearing's service life. Finally, rotate the crank handle counterclockwise to unscrew the cap, completing the lubrication operation. (Bearing cap shown in the diagram.)
[0023] This invention is simple and quick to operate, significantly improves the oiling efficiency of the fixed spindle, and reduces the labor intensity and workload of workers.
Claims
1. A closed-type rolling bearing oil filling device, comprising a screw-cap grease cup with an external threaded nozzle, characterized in that: It also includes an external sleeve, a nut wrench, and a control lever. The external sleeve and the nut wrench are threaded onto an external threaded nozzle. One end of the external threaded nozzle is threaded onto the grease injection pipe, and the other end is threaded onto the filling port of the screw-on grease cup. The nut wrench consists of a nut and two steel bars symmetrically welded onto the nut. The nut of the nut wrench is threaded onto the external threaded nozzle. One end of the nut side of the nut wrench is in close contact with the filling port of the screw-on grease cup, and the other end is in close contact with the external sleeve. The control lever is fixed to the outside of the screw-on grease cup by bolts.
2. The enclosed rolling bearing oil injection device according to claim 1, characterized in that: The external thread nozzle has a diameter of 20mm and a length of 40mm.
3. The enclosed rolling bearing oil injection device according to claim 1, characterized in that: The joystick consists of a rocker arm and a handle, and the rocker arm is 300mm long.