Selection of performance parameters of sludge single screw pump
The selection of performance parameters of sludge single screw pump is the key to ensure its effective and efficient operation. The following are some key points for selecting the main performance parameters:
Flow and pressure:
Determine the delivery flow and pressure of the sludge single screw pump according to actual needs to ensure that the sludge can be smoothly transported to the discharge port. The flow range is usually between 0-150m³/h, and the head can reach 60-120m.
Speed:
The flow rate of the screw pump is linearly related to the speed. However, high speed will accelerate the wear between the rotor and the stator and shorten the service life of the pump. Therefore, it is recommended to choose a pump with a speed below 300 revolutions per minute, or to reduce the speed through a reduction mechanism.
Power:
Select the appropriate motor power according to the delivery flow and pressure of the pump to ensure the stable operation of the pump. The power range is usually between 0.75-37kw.
Temperature and pressure stability:
The operating temperature range of the sludge single screw pump is generally -15-200℃, and can be as high as 120℃ in special cases. The normal pressure of each stage (one lead of the stator) is 0.6Mpa, and it is allowed to be as high as 0.8Mpa in a short time (no more than 30 minutes).
Corrosion resistance:
Since the sludge may contain corrosive substances, the corrosion resistance of the pump needs to be considered. When selecting, the material and coating requirements of the pump need to be determined based on factors such as the chemical composition and pH value of the sludge.
Abrasion resistance:
The sludge may contain a large number of solid particles, which will cause wear on the rotor and stator of the pump. Therefore, when selecting, the wear resistance of the pump needs to be considered, and materials and coatings with high wear resistance need to be selected.
Sealing performance:
The sealing performance of the sludge single screw pump is crucial to its operating stability and service life. When selecting, it is necessary to pay attention to the sealing structure and sealing material of the pump to ensure that it can meet the working conditions and has good sealing performance.
Maintenance and maintenance:
When selecting a sludge single screw pump, it is also necessary to consider the convenience of its maintenance and maintenance. Including the ease of operation such as disassembly, cleaning, and replacement of parts of the pump, as well as the time and cost required.
