General introduction
Progressive cavity pump is called P.C pump,also single-screw pump.when the rotor is driven by external force, the rotor makes planetary movement inside the stator, that makes the sealed chambers move to the pump outlet at a uniform speed. The rotor with continuous movement produces a continuous sealed cavity chamber, so that the fluid is continuously suctioned from pump inlet and discharged to the outlet of pump, so this realizes the continuous transmission of the medium.
Generally,single-screw pump market demands are more than twin-screw pump and three-screw pump worldwide.
Key features
1.Wide application from water, waste water to viscous fluid
2.Horizontal or vertical installation
3.Low noise, simple structure and easy maintenance
4.Low shearing force and pulsation
5. The flow rate is proportional to rotation speed
6. Hollow rotor available for higher pump efficiency
7. Equal-wall thickness stator design for higher working pressure with compact structure
Performance range
-Capacity:400m3/h
-Pressure:46bar
-Temperature:-20 to 120 ℃
-Particle OD Max:28mm
For catalogue, contact sales@shenmech.com
General introduction
Twin-screw pump is kind of rotary displacement pump, several sealed chambers are formed in pump casing due to engagement of power rotor and idler rotor and close fits between the rotors and liner when power rotor is driven. These sealed chambers move forward continuously when the idler rotor is rotated by timing gears, that to push the liquid in the sealed chambers to discharge chamber and discharge line, so that the liquid transferring is achieved.
Multiphase screw pump is applicable for oil,gas and water fluids, GVF is up to 99%, diff.pressure is up to 500 psi.
Key features
1.Low shearing to fluid and stable discharge pressure
2.Not direct contacts between rotors and between the rotating parts and fixed parts
3.Various shaft seals for different operating conditions
4.Heating jacket is available as requirement
5.Replacement liner is available
6.Wide applicable for liquids of low or high viscous, clean or abrasive, neutral or corrosive chemical, also for oil, gas and water multiphase
Performance range
- Capacity: 2000m3/h
- Pressure: up to 70bar
- Temperature:Max.300℃
- Viscosity: Max.1000000 cSt
For catalogue, contact sales@shenmech.com
General introduction
Three-screw pump normally consist of a power rotor, two idler rotors and a rotor liner. The power rotor is engaged with idler rotors, and they form sealed chambers with the rotor housing. When the pump is driven by motor or engine, the medium is absorbed and sealed in the sealed chambers that move continuously towards the outlet along the axial direction when the rotors are rotating, and the medium is discharged at the outlet, so that the liquid transferring is achieved.
SN series:Replaceable liner and mechanical shaft seal
GR series:Integrated casing and liner, shaft is lip seal
Key features
1.Good self-priming and high efficiency
2.Horizontal or vertical installation
3.Applicable for lubricating fluid or clean fuel oil
4.Easy maintenance and low noise
5.Pressure relief valve applied as protection
Performance range
- Capacity: 380m3/h
- Pressure: Max.40 bar
- Temperature: 180℃
- Viscosity:1500 cSt
General introduction
When the gears installed on shaft rotate, the suction chamber volume is increased to suck fluid, and discharge chamber volume is decreased to deliver fluid with casing, meshing gears and covers. It is typically used for viscosity fluid pumping such as clean fuel oil, lube oil, resin, bitumen, paint, or edible oil. Achieved best efficiency in China for internal gear pump due to technology innovation and patents.Normally,gear pump includes internal gear pump and external gear pump, our internal gear pump series as below:
NL series:Heavy duty multi-function NM series:General purpose
NE series:Magnetic drive leak-free NC series:Close-coupled
Key features
1.Easy to use and maintenance
2.Simple structure with shaft, gear, cover, casing, bearing
3.Steady fluid flow comparable to diaphragm pump
4.Cannot dry run, cannot handle fluid with solid or abrasive
5.Internal gear pump is applicable for higher viscosity liquid
6.Horizontal or vertical installation
7.Heating jacked casing or magnetic drive available
Performance range
-Capacity:410 m3/h
-Pressure: Max.18 bar
-Temperature: 280℃
-Viscosity: 300000 cSt
For Russian sales, contact our local distributor
General Introduction
Magnetic drive pump is a similar standard centrifugal pump with magnetic coupling, the leaks caused by mechanical seal failure are eliminated with magnetic coupling. In a magnetic drive pump, the wetted parts end and motor are two separate contained parts, connected by only a motor bracket.
At the end of the motor shaft, a drive magnet is attached, and as the drive magnet rotates around the rear housing, the impeller, which is fixed upon another magnet, spins in synchronization. Without a shaft seal leakage possibility, magnetic drive pumps are good for applications involving corrosive, toxic, flammable, expensive, or hazardous liquids.
Key features
1.Corrosion resistant
2.Low operating noise
3.Low current draw and heat rise
4.No shaft seals or liquid leakage
5.SS304,SS316,SS316L materials available
Performance range
-Capacity: Max.100m3/h
-Head: up to 80m
- Power: Max.55kw
- Operating Temp.: Max.90 °C