1. The proposed method 1.1 Block diagram The block diagram of the existing method and the new degreasing method is shown in Figure 1. Figure 1 Block diagram 1.2 Algorithm ●Start ●Choose 1 set of full grease bearing and place the bearing vertically into the washing machine ●When compressed air and kerosene pass through the bearing, the grease will be removed from the bearing ●Complete the bearing cleaning ●End 1.3 Flow chart The flow chart is shown in the figure 2 shown. Fig. 2 Flowchart 2. Discussion 2.1 Existing method Take the cylindrical roller bearing to the cleaning area and use kerosene to clean it first, which can remove part of the grease in the bearing. Then use compressed air with a pressure of 0.8 to 1.0 MPa to completely clean the bearings, and use Servo gem 3 and Lithon 3 from a lubricating oil company to clean the bearings. The main drawbacks of this method are: cleaning chemicals can cause damage to human health and waste kerosene and compressed air; manual cleaning also takes more time. The new cleaning method can improve safety, reduce work intensity, reduce working hours, reduce labor costs and reduce waste. How it works is detailed in Section 3.1. 2.2 Component description 2.2.1 The CAD 3D drawing of the standard size traction motor HS-15250A roller bearing in the bearing maintenance manual is shown in Figure 3, with an outer diameter of 150mm and a width of 30mm. Fig. 3 Roller bearing 2.2.2 Housing The housing is used to fix the bearing. There are 2 pipes at the top of the housing, one for kerosene and the other for compressed air. Opposite compressed air ducts are placed on both sides of the housing to rotate the bearings. Mild steel is recommended as the housing material due to its high tensile strength, durability, light weight and common material. Mild steel housings can be welded, but gas cutting is relatively more expensive. The enclosure is shown in Figure 4. Figure 4 Housing 2.2.3 Locking device and drainage area When the bearing is placed horizontally and the housing is placed vertically, the locking device is used to secure the bearing. The drainage area should be large enough to ensure that kerosene is flushed from the bearings. 2.2.4 Detailed drawings The parts after disassembly are shown in Figure 5, which helps to have a clearer understanding of each part. Figure 5 Detailed view of each part 2.2.5 Assembly The assembled cleaning machine is shown in Figure 6. Figure 6 Assembled cleaning machine 3. Analysis of the results 3.1 The first principle of the working cleaning machine is that the less dense mixture of kerosene and air can completely remove the grease from the bearing and collect it in the drainage groove. When the pipe at the top of the casing sprays kerosene, another pipe at the top of the casing sprays compressed air at the same time, and the flow of kerosene and compressed air is calculated by the metering pipe. Locking devices are provided on both sides of the housing to ensure that the bearings can be adequately cleaned. Compressed air is sprayed from the side pipe to rotate the bearing, which ensures that the grease can be effectively removed and cleaned in a short time. The used kerosene will be collected in the bottom drain so that the filtered kerosene can be reused for the same purpose. 3.2 Design recommendations 3.2.1 The standard size of the shell cylindrical roller bearing is an outer diameter of 150mm and a width of 30mm, so the inner diameter of the shell is 155mm and the clearance is 5mm. No clearance is required in the width direction, so the case width is 30 mm. The configuration of the housing and the bearing is shown in Figure 7 to ensure that the housing can hold the bearing during cleaning. Figure 7 Shell 3.2.2 The smaller diameter of the compressed air pipe at the top of the shell will increase the compressed air flow rate, and the appropriate pipe diameter can reduce the waste of kerosene. 3.2.3 Drainage area Larger drainage area can make cleaning more efficient, but it will also lead to waste of kerosene, so the drainage area should be moderate to reduce waste. 3.2.4 Calculation formula The detailed calculation formula of the washing machine is as follows: a) drainage area = length x width; b) occupied volume = equipment area x height; c) equipment weight = occupied volume x material density; d) material cost = Weight x unit weight cost. 3.2.5 Advantages of automatic degreasing a) Compared with manual degreasing, it takes less time; b) The labor intensity of workers is reduced; c) Compared with manual degreasing, it saves more kerosene; d) It is safer and harmless to human health. 3.2.6 Research directions a) Sensors can be used to automate cleaning; b) Computers control compressed air and kerosene to realize remote control of cleaning machines; c) Use lighter materials to make cleaning machines portable. Fourth, the conclusion introduces the roller bearing grease automatic cleaning machine, which can reduce the waste of kerosene and compressed air, reduce the damage to human health caused by the chemicals used in cleaning roller bearings, and reduce the labor intensity of workers. The structure design of the cleaning machine is very simple, the working principle is relatively simple, and the operation is simple. The kerosene collected in the drainage area can be reused after being filtered, so the cost of degreasing the roller bearing can be reduced. Compared with the manual degreasing method, it has obvious advantages. (References omitted) Source: 'International Journal of Innovative Technology and Exploring Engineering', 2019, 8(10): 2431 -2434. Author: Anupoju Sai Vamsi et al.