Self-balancing multi-stage centrifugal pump design features

The design of the ZPD self-balancing multistage centrifugal pump is based on practical safety, economy, trouble-free movement and low maintenance costs throughout the entire pump operation.

The main description is as follows: Advanced modular design modular, extensive use of long-term running tests of the local components, parts have a high degree of interchangeability.

High-strength, high-quality materials and a variety of choice of import and export flange and take over design to improve the high pump allowable load, high strength, high quality pump shell structure, material structure, the service life of the ordinary castings 5 ​​times , Over-current parts impeller, guide vane using precision casting, smooth and smooth than the average casting efficiency increased by 2%.

At any time to meet the user's special circumstances, the system's specific requirements. Fast assembly and disassembly design allows the pump to be replaced without seals, bearing components and parts without overhauling the pump body and inlet and outlet lines, ensuring minimal overhaul and inspection time. High efficiency, high reliability and low cost combination. Through the best combination of impeller and guide vane, as well as the reasonable fit clearance and wide axial throttling design, the ZPD self-balance multistage centrifugal pump can still maintain its high stability and high running after long-term operation effectiveness.

Good cavitation performance: the use of excellent impeller hydraulic model or a special double-suction impeller structure, users do not need to configure the front pump or increase the height of the inlet tank. Symmetrical arrangement of the impeller rotor parts, rotor parts on both ends of the impeller points high and low pressure, the axial force offset each other and balance the pump transient operation of the transient axial force and machining errors and spiral residual pressure generated by the axial force, It is borne by the thrust bearing mechanism of the bearing components. This kind of pump cancels the axial force balance mechanism such as balancing disc or balance drum, completely avoids the rotor locking due to the failure of the balance disc or the balance drum caused by the change of the pump working condition, , Broken shaft, or even the occurrence of burned motor accident.

Safe pump body seal design: According to different pressures and structures, the pump body adopts metal to face hard seal or O-ring seal on metal surface. According to user requirements, increase the middle tap and the minimum flow system. The pump can be replaced without the import and export of bearings in the case of replacement, sealed.

【Print】 【Close】

Hardfacing Pipe

Hardfacing Pipe is produced through an oscillating table with a welding head to arc weld the chromium carbide into the inside of the pipe. We can handle diameters from 6" to 24" and then we manufacture pipes from our chrome-plated sheets. The cover layer is deposited perpendicular to the material flow through the pipe, resulting in a longer wear life


Typical materials for cladding in common use at HP Welding include HP700, HP700S, HP750X, HP750P and stainless steels, as well as many less common alloys.


With over 30 years of experience on the production of hardfacing products, and the technical expertise to back them up, HP Welding can meet any base material and cladding combination.


The advantages of HP Hardfacing Pipe

1. Flat surface and nice appearance

2. Good weldability to others working pieces

3. Excellent wear resistance


HP Hardfacing Pipe can be widely applied to mining site, cement plant, metallurgical equipment, dredging and power generation and any other fields where need to combat with abrasion.

Hardfacing Pipe (1)

Hardfacing Pipe (2)

Alloy Steel Pipe, Hardfacing Iron Pipe, Chrome Alloy Hardfacing Super Wear Resistance Pipe

HuiFeng Wear Resistant Group , https://www.hpwearsolution.com