The reason why the three-screw pump is killed is generally divided into two types:
1. The cavity containing solid particles entering the pump directly causes the screw to rotate unsmoothly and bite.
2. The working condition of the sliding bearing, the general bushing hole and the shaft are matched by the clearance. The dimensional deviation between the shaft diameter and the bushing hole diameter on the part drawing is generally ensured to have a reasonable gap between the shaft and the bushing hole according to the average working temperature of 20 °C. Determined by change. There are many factors affecting the overheating failure of the sliding bearing. In the case of reasonable design of the sliding bearing structure and correct selection of materials, the overheating of the sliding bearing is mainly caused by improper assembly of the radial clearance of the bearing and improper use.
The radial clearance of the sliding bearing affects the bearing overheating fault. The radial clearance Δ of the sliding bearing is the difference between the bearing bore diameter and the journal diameter. The sliding bearing should have a certain radial clearance. The function is as follows: the shaft and the bearing are realized. The minimum condition of the active connection; it is the guarantee of the operation precision of the control shaft; it is an important condition for the formation of liquid lubrication. Therefore, the radial clearance of the plain bearing is very important, and it is extremely harmful if it is too large or too small. If the gap is too small, it is difficult to form a lubricating oil film, and the friction heat is not easily taken away, so that the bearing is overheated. When it is severe, the shaft will be "hug"; if the gap is too large, the oil film is difficult to form, which will reduce the running accuracy of the machine and cause severe vibration and noise. Even leading to seizure. Therefore, if the user does not understand the problem, please do not dismantle and repair it. You need to open it under the guidance of professional technicians and follow the relevant technical requirements for step-by-step maintenance and debugging. Huangshan Aiken Machinery Manufacturing Co., Ltd. production of the three screw pump has a strong self-absorption capacity and to undertake various models of screw factory maintenance. All components are designed in a versatile series with a variety of mounting methods such as horizontal  Vertical  Flange  Immersion  Hanging and so on. Compact structure, small size and light weight, it can work at higher speed and higher pressure. Used as fuel, fuel supply and transfer pump in heating equipment  A boiler ignition pump is available. Used in the mechanical industry as a hydraulic, lubrication and remote control motor pump. Used in the petrochemical and food industries for loading, conveying and liquid supply pumps. Used on ships for conveying, boosting, fuel injection and lube oil pumps and marine hydraulic pumps. Suitable for conveying a variety of non-corrosive oils and similar oils and lubricity liquids.
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