Chemical Pump OH2

Structure and Performance

Flow rate: ≤110 m³/h

Head: ≤1900m

Rotational speed:～6800r/min

Working pressure: ≤25 MPa

Medium temperature: -40°C to 300°C

Inlet Pressure: <1.5 MPa

Motor power: ~560 kW

1.structure

2、Structure description and working principle

As shown in Figure 1, the rotaryjet pump is essentiallycomposed of a rotatng circular shell, The center ofthe shell isequipped with a fixedwing-shaped collecting tube, namely apitot tube. The liquid enters the shell axially from the center. Atthe outeredge of the shell, the liquid increases its pressure andspeed due to the centrifugal force. The nozzle of the collectingpipe has an opening in the direction of rotation and is placedclose to the outerwall of the shell, which can corvert mos ofthe kinetic energy of the liquid into static pressure. Then, theliquid returns to the center of the pump through the hole in thesupport arm of the collecting pipe and is discharged to thedischarge pipe. The cross section ofthe collecting pipe iswing-shaped, in order to reduce the resistance of thehigh-speed rotating fluid medium, Using this working principle,a relabvely high outlet pressure can be obtained underthesingle-stage action, the pump produces a pulsaton-free liquidflow, and has a stable NPSHR curve in a wide flowrange. Thecollecting pipe of the pump is made of high-tech aerspacematerials,which is wear-resistant, corrosion-resistant,high-temperature resistant, small coefficient of thermalexpan-sion, and high safety and reliabilityIts advantages: underthe same service conditions, it is smallerthan the volumetric pump or multistage centifugalpump insize, lowver in cost, has smooth flow (ie., the head curve is flat,and has the characteristics ofvariable flow and pressurestabilization), and the pump outlet pressure has no pulsation.

Product features

High safety and reliability: The rotor cavityof FxP new rotary jetpump adopts cantleverstructure.The cantlever ratio of rotorcomponents is small, and the support is stable and reliable, whichovercomes the shortcomings of the tradtional structure that therotor is too heavy and the cantlever ratio is too large. The mechanical seal has a long service life and low maintenance cost: The FXP new rotaryjet pump has a novel andoptimized structure, fewer pump parts, simpler structure comparedwith multi-stage pump and current ordinary rotary jet pump,corvenientassembly, disassembly nd maintenance, and lowmaintenance cost,The mechanical seal is located at the inlet of thepump. it only needs to seal the inlet pressure, which is easyto sealand has a long service life; Easyto operate; The main shaft doesnot contactwith medium and has no sealing problem, so thecorrosion resistance of the shaft is not considered;Long bearing life: Due to the specal structural design of FxP newrotaryjet pump, the pump rotor barely produces axial fore.fundamentally overcoming the problem of large axlal force andpoor balance of multistage pump, The bearing acopts importedbeanng, and the bearing lubrication adopts oil bath lubrication. The bearing is selected with large margin. There is a coolingchamber outside the bearing, and the bearing has a long servicelfe;Good stability: when the FxP new rotaryjet pump increases gear,there is a separate gearbox to increase speed, The gear transmission ratio is not too high.The requrements for the speed box andits bearings, seals and gears are not too high. The gearbox is easyto maintain, stable and reliable, and has a long service life. lf motorpovver is less than 75kw, belt transmission can be used to increasespeed, which is easier and cheaper;