Structure diagram of energy-saving self-balancing multi-stage pump
Energy-saving self-balancing multi-stage pump structure mainly consists of the following parts:
1, impeller
Energy-saving self-balancing multi-stage pump impeller adopts single suction, closed type, high efficiency impeller, symmetrical arrangement
- The impeller and the shaft are connected by a key, and the installation method is sliding.
- Each impeller is independently positioned with a snap ring.
2, suction stage, discharge stage
- Because the impeller is arranged symmetrically back to back and the structure is segmental, the suction section is divided into driving side and non-driving side. The suction port of the suction section (non-drive side) is vertically downward.
- The outlet section has two outlet flanges, of which the vertically downward flange and the flange of the suction section (non-drive side) are connected by a duct part to realize the flow transition between the reverse impellers
- The transition of liquid flow between impellers in the same direction is realized by guide vanes.
3, energy-saving self-balancing multi-stage pump body sealing ring/impeller sealing ring
- Pump body seal ring includes suction section seal ring, guide vane seal ring, middle section seal ring, pump body seal ring and impeller seal ring are both vulnerable parts and can be replaced;
- The seal ring of the pump body and the seal ring of the impeller are fixed by means of seam anti-rotation pins and spot welding, or fixed by means of seam screws and riveting;
- All sealing ring materials are made of high wear resistance and high hardness materials, body sealing ring: HB=321~375.
Impeller sealing ring: HRC=45~52
4. Energy-saving self-balancing multi-stage pump intermediate sleeve and intermediate sleeve
- The intermediate sleeve is installed between two adjacent impellers that are close in opposite directions, and the intermediate sleeve is connected to the shaft by a key and is installed on the spit section, forming a small gap with the intermediate sleeve. There is a pressure difference between the reverse impellers on both sides of the gap. , Produce a certain axial force, point to the drive side
- All intermediate sleeves and intermediate sleeves are made of highly wear-resistant, high-hardness materials, intermediate sleeve: HB=321~375, intermediate sleeve: HRC=45~52.
5. Energy-saving self-balancing multi-stage pump throttle sleeve and throttle sleeve
- The throttling sleeve is installed on the suction side of the impeller on the non-drive side, and the throttling sleeve is connected to the shaft through a key and installed on the suction section (non-driving side), forming a small gap with the throttling sleeve, and the gap is generated by the pressure difference on both sides A certain axial force, directed to the non-drive side;
- All throttle sleeves and throttle sleeves are made of high wear resistance and high hardness materials. Throttle sleeve: HB=321~375, throttle sleeve: HRC=45~52.
6, axis
- The shaft adopts a rigid shaft design
- In order to facilitate the installation and removal of the impeller and the shaft sleeve, the surface of the shaft is chrome-plated 0.05~0.08mm.
