A Class Progressive Cavity Pump
Applications
A class progressive cavity pumps produced by Subtor feature a structural design with a bearing black, which can bear a higher axial load than traditional designs. The pump is designed to handle any transport mediums, including water, with a maximum solid content of 45%. The pumps are suitable for the following applications:
1. Food processing factories: transport jams, meat pastes, starches, chocolate, etc.
2. Sewage treatment plant: deliver desulphurized sewage, sludge, etc.
3. Oilfield Industry: convey oil and gas mixtures, oil and water mixtures, etc.
Parameters
Stage: 1-12 stages
Type: single-head monoblock pump, double-head nonoblock pump
Working pressure
Single-head pump: 6 bar, 12 bar, 18 bar, 24 bar, 36 bar, 48 bar, 60 bar, 72 bar
Double-head pump: 5 bar, 10 bar, 20 bar
| Model | Flow range m3/h | Speed range rpm | Motor power Kw | |
| VD015-006P04OH | 0.18~0.42 | 180-550 | 0.37~0.75 | |
| VD020-018P04OH | 0.5~1.2 | 180-550 | 0.55~1.5 | |
| VD030-056P04OH | 1.5~6 | 200~650 | 1.75~3 | |
| VD035-120P04OH | 3~10 | 180~550 | 2.2~7.5 | |
| VD040-010P04OH | 4~15 | 150~520 | 4~11 | |
| VD050-022P04OH | 8~25 | 135~470 | 7.5~15 | |
| VD060-038P04OH | 12~40 | 140~450 | 7.5~22 | |
| VD070-058P04OH | 15~60 | 136~420 | 22~30 | |
| VD090-106P04OH | 30 ~100 | 120~350 | 30~55 | |
| VD100-160P04OH | 35~140 | 100~350 | 30~75 | |
| VD120-240P04OH | 60~200 | 80~270 | 45~90 | |
| VD150-480P04OH | 70~270 | 70~240 | 55~110 | |
| VD170-600P04OH | 80~340 | 50~190 | 75~160 |
Working principle
Progressive cavity pumps use positive displacement through interference between the rotor in eccentric motion and the fixed rotor. The seal cavities are disconnected and the rotation of the rotor inside the stator. The seal cavities are axially moved from the inlet to the outlet, this creates a pressure differential that causes the medium to flow to the different seal cavities.
- Design drawing of the stator and the rotor
- Metal flexible rod universal joint
- Spring flexible rod universal joint
- Ball tooth universal joint
Rotor
The rotor can be designed and manufactured according to the specifications of customers. Surface hardening or vacuum heat treatments can be applied to metal materials in order to increase their hardness up to HRC 65-67.
Stator
Material: NBR, NBRH, HNBR, EPDM and FKM materials can be used for the stator as they can withstand various abrasion and high temperature resistant mediums and operational environments.
Universal joint
Universal joint transmission components can be produced and installed in your pump. In addition to traditional pin type and pin sleeve type universal joints, we supply hygiene class, flexible type, ball tooth type, and cross pin type universal joints, to handle the varying torques and axial loads.
Shaft seal
Packing or mechanical seals can be installed on the shaft depending on your specific working conditions. Cooling and washing systems can also be installed in order to extending the useful life of the seal and pump in general.
Driving system
SEW, NORD, ABB and other high quality driving systems are available for selection.
Weifang Subtor as a German Subtor invested company in China, offers wide range of progressive cavity pumps and components. The A class progressive cavity pump has typical applications as food pumping, slurry pumping, sewage pumping, oil pumping, etc. A progressive cavity pump is a type of positive displacement pump, also known as eccentric screw pump. With German supported technology and rich marketing resources, Subtor provides quality PCP pumps with custom solutions for global clients.
