The influence of clearance control of zyb slag oil pump on flow stability

In the industrial fluid transportation area, ZYB slag oil pump has become a key equipment for transporting media containing impurities due to its special structure and stable performance. Among them, gap control, as the core component of the internal structure of the pump body, plays an important role in flow stability.

The clearance of ZYB slag oil pump mainly includes the radial clearance between the gear and the pump body, the axial clearance between the gear end face and the end cover, and the fit clearance of the blades in the blade groove. The size of these gaps directly affects the leakage rate of the medium inside the pump, which in turn affects the flow stability.

Radial clearance is the gap between the outer circumference of the gear and the inner wall of the pump body. The correct radial clearance can determine the normal rotation of the gear and reduce the leakage of the medium from the high-pressure area to the low-pressure area. If the radial clearance is too large, a large amount of medium from the high-pressure chamber will leak into the low-pressure chamber, resulting in a decrease in the actual output flow rate and an increase in the fluctuation amplitude of the flow rate. This is because the leakage rate will change with the working pressure of the pump. The higher the pressure, the more severe the leakage, and the worse the stability of the flow rate. If the radial clearance is too small, it may cause friction between the gear and the pump body, which not only increases mechanical wear, but also generates heat due to friction, causing the temperature of the medium to rise and changing its viscosity, further affecting the stability of the flow rate.

Axial clearance is the gap between the gear end face and the pump cover, which has a significant impact on the volumetric velocity and flow stability of the ZYB slag oil pump. When the axial clearance is too large, the medium will leak a large amount through the gap between the gear end face and the end cover, causing the actual output flow rate of the pump to be much lower than the theoretical flow rate, and the flow rate will fluctuate significantly with changes in working pressure. This is because the leakage channel area of the axial clearance is large, and the leakage amount is more sensitive to pressure changes. However, if the axial clearance is too small, it will increase the friction between the gear end face and the end cover, increase the operating load of the pump, and even cause the gear and end cover to bite, making the pump unable to work normally.

The clearance between the blades in the blade groove cannot be ignored. Appropriate clearance can determine the free expansion and contraction of blades in the blade groove, adapting to changes in the working state of the pump. If the gap is too large, the blades will shake during operation, resulting in a decrease in the sealing effect inside the pump, an increase in leakage, and an impact on flow stability. At the same time, the shaking of the blades will exacerbate the wear between the blades and the blade grooves, shortening the service life of the pump. However, if the gap is too small, the expansion and contraction of the blades in the blade groove will be hindered, making it impossible to complete the oil suction and discharge process normally, resulting in unstable flow output of the pump, and even the phenomenon of flow interruption.

In order to determine the flow stability of ZYB slag oil pump, it is necessary to correctly control the clearance of each part based on factors such as the characteristics of the conveying medium, working pressure, and temperature. In the process of pumping, the clearance should be determined within the range through accurate processing technology and strict quality control. During the operation and maintenance of the pump, it is necessary to regularly check the changes in clearance and promptly adjust and repair any excessive clearance caused by wear and tear. In addition, a gap automatic adjustment structure can be adopted to enable the pump to automatically adjust the gap according to actual working conditions during operation, further improving flow stability.

In summary, the clearance control of ZYB slag oil pump is a key factor affecting flow stability. Only by correctly controlling the gaps between various parts can we reduce medium leakage, decrease flow fluctuations, ensure stable pump operation, and thus meet the requirements of fluid transportation in industrial production.