Analysis of energy-saving schemes and situations for different self suction centrifugal oil pumps

[1] Energy saving solutions for different self priming centrifugal oil pumps

Self priming centrifugal oil pumps can be classified into multiple categories according to different conditions, and enterprises need to develop different plans for different self priming centrifugal oil pumps. According to the working principle of self suction centrifugal pumps, they can be divided into three categories: blade type self suction centrifugal pumps, positive displacement self suction centrifugal pumps, and other types of pumps. Most enterprises in our country rely on single-stage absorption self suction centrifugal oil pumps, which are one type of blade self suction centrifugal oil pump. This type of pump works by relying on the pressure generated by the fluctuation of the blades when the impeller rotates at high speed to transport liquid

At the same time, other types of self priming centrifugal oil pumps have different working characteristics and usage methods, so corresponding changes need to be made in energy conservation. Overall, the main way to save energy for self priming centrifugal pumps is to promote the matching between the pump and the pipeline, and to achieve full opening of the outlet valve of the pump as much as possible, thereby reducing energy consumption caused by the mutual adjustment between the pump and the pipeline. The first thing to determine is whether energy conservation measures need to be taken for the self suction centrifugal oil pump. Therefore, if the outlet valve of the self suction centrifugal oil pump consumes too much energy, the implementation of energy-saving measures should be immediately considered. When determining the energy consumption of a self priming centrifugal oil pump, a serious and cautious attitude should be taken to conduct high degree of measurement, using theoretical calculation values as the basis for calculation, and combining actual measurement data for correction. The method of combining theory with practice should be adhered to

[2] Analysis of loud sound and vibration in self suction centrifugal oil pumps

What abnormal sound and vibration can occur in self suction centrifugal oil pumps?

? Many people believe that this is due to quality issues with self-priming centrifugal oil pumps, but in fact, the main reasons for the large vibration of self-priming centrifugal oil pumps are as follows for reference:

1. Due to the incorrect installation of the self-priming centrifugal oil pump equipment, some users directly fix the self-priming non clogging sewage pump randomly from the factory to save trouble and effort. The wooden strip bracket of the self-priming centrifugal oil pump is placed on the ground together with the inlet and outlet pipelines for direct use. Some users also fix the self-priming centrifugal oil pump on the triangular iron welded bracket. Due to the triangular iron bracket being too single and not solid, only a small amount of the self-priming centrifugal oil pump base contacts the triangular iron. This method is incorrect and correct. It is to remove the wooden strip and fix the pump on a hard and flat ground

2. If the concentricity of the coupling is not properly adjusted or the rubber block inside the coupling is worn during the installation of the ZX self-priming centrifugal oil pump, resulting in large vibration of the self-priming centrifugal oil pump, the concentricity of the coupling should be recalibrated or replaced with a new rubber block and the concentricity should be adjusted properly

3. It is also possible that the damage to the bearings of the self suction centrifugal oil pump may be due to the large vibration of the self suction centrifugal oil pump. Replacing the bearings can solve the problem

4. Due to the non-standard diameter configuration of the inlet and outlet pipes of the self suction centrifugal oil pump, for example, the stainless steel self suction centrifugal oil pump has a pipeline of 100mm and an outlet of 100mm. Some users, without consulting the manufacturer, directly reduce the pipeline size, resulting in a small water inflow that cannot keep up with the water output of the self suction centrifugal oil pump. This is also the reason for the large vibration of the self suction centrifugal oil pump and the abnormal sound of the self suction centrifugal oil pump

5. If the water level in the suction tank drops or the water flow is too fast, it may cause the self suction centrifugal oil pump to introduce air during suction, resulting in abnormal sound

Self suction centrifugal oil pump may malfunction during use. If judged and handled improperly, it will affect the working performance of the self suction centrifugal oil pump and even fail to work. The phenomenon that the self suction centrifugal oil pump continues to occur is that it does not produce water. Here is your solution:

[Self suction centrifugal oil pump does not produce water]

(1) Check whether the water storage chamber of the pump body is filled with enough water before starting (at least the water level exceeds the centerline of the impeller).

. Otherwise, add enough water

(2) Whether the rotation direction meets the requirements. If there is inconsistency, it can be adjusted to align with the rotation direction of the pump

(3) Is the impeller port of the self suction sewage pump blocked. If there is a blockage, it needs to be cleared

(4) Check if there is any air leakage or blockage in the suction pipe. If any, it should be immediately ruled out

(5) Check if the mechanical seal and skeleton oil seal are damaged. If damaged, it needs to be replaced

(6) The reflux hole in the pump body is unobstructed, otherwise, clean the reflux hole and block it

If the speed of the water pump is too low, it should be allowed to reach the normal speed