Direct-Coupled Progressing Cavity Pumps in Industrial Design

Q=0.5-300 m³/h (2.2 USGPM – 1321 USGPM)

P=0~2.4 Mpa (0~348 psi)

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What is adirect-coupled progressing cavity pump in industrial design ?

Direct-connected progressive cavity pump has no bearing seat, and the prime Mover bears the axial force of the progressive cavity pump, connecting the driving end and the flange at the end of the pump into a whole.

Direct coupled pump structure is compact and its axial dimension is short. Low investment, use and maintenance costs.

It is  mainly used in environmental protection technology, food and chemical industries, etc., and can also meet various pressures of the petroleum industry, with stable delivery or precise administration.

Sludge Screw Pump

The direct-Coupled Progressing Cavity Pumps features

  • Gentle transportation
  • Suitable for all kinds of media with high viscosity and containing solid particles
  • Convenient disassembly and maintenance
  • Rotor / stator with various geometry and materials
  • Compact structure and small occupied area
  • The right joint for any application
  • Small mechanical vibration, no vibration and stable operation
  • Standard mechanical seal, other seals optional
  • Speed is proportional to rotational speed

PMV Direct-Coupled Progressing Cavity Pumps Parameter Table

Pump TypePressure Range (bar)Capacity Range (m³/h)Speed Range (rpm)Inlet Size (G/DN)Outlet Size (G/DN)Motor Power (KW)
MJN025-2S0~120~0.250~350G1¼G1¼0.37
MJN05-1L0~60~0.50~350G1¼G1¼0.37
MJN05-2S0~120~0.50~350G1¼G1¼0.75
MJN1-1L0~60~10~350G1¼G1¼0.75
MJN1-2S0~120~10~35050501.5
MJN1-4S0~240~0.50~25050503
MJN3-1L0~60~30~35050502.2
MJN3-2S0~120~2.50~35065653
MJN3-4S0~240~1.50~25065655.5
MJN5-1L0~60~50~32065653
MJN5-2S0~120~50~32080804
MJN5-3S0~180~30~25080805.5
MJN5-4S0~240~20~20080807.5
MJN10-1L0~60~100~30080804
MJN10-2S0~120~70~30080805.5
MJN10-3S0~180~60~25080807.5
MJN10-4S0~240~40~200808011
MJN15-1L0~60~150~30080805.5
MJN15-2S0~120~120~3001001007.5
MJN15-3S0~180~100~25010010011
MJN15-4S0~240~70~20010010015
MJN25-1L0~60~250~2801001007.5
MJN25-2S0~120~220~30012512511
MJN25-3S0~180~150~25012512515
MJN25-4S0~240~120~20012512518.5
MJN50-1L0~60~500~28012512511
MJN50-2S0~120~350~25015015022
MJN50-3S0~180~300~23015015030
MJN50-4S0~240~260~20015015037
MJN80-1L0~60~800~28015015022
MJN80-2S0~120~600~28015015037
MJN80-3S0~180~420~20015015045
MJN80-4S0~240~250~15015015055
MJN120-1L0~60~1200~25015015037
MJN120-2S0~120~1000~27020020045
MJN120-3S0~180~600~18020020055
MJN120-4S0~240~500~15020020055
MJN180-1L0~60~1800~22020020045
MJN180-2S0~120~1700~22020020055
MJN300-1L0~60~3000~22020020055
PMV progressive cavity pump design

PMV progressive cavity pump parts

PMV progressive cavity pump for sale/progressive cavity pump design

progressive cavity pump diagram1
progressive cavity pump diagram

The Applications of Direct-Coupled Progressing Cavity Pumps

Direct-connected progressing cavity pump can be used to transport neutral or corrosive liquids, clean and abrasive liquids, liquids containing gas or easily generating bubbles, and liquids with high viscosity or low viscosity (including liquids containing fibers or solid substances)
Environmental protection: the transportation of industrial sewage, domestic sewage and sludge turbid water containing solid particles and short fibers, especially suitable for oil-water separators, plate filter presses and other equipment
Shipbuilding industry: used for transporting residual oil, cleaning tanks, sewage, seawater, etc.;
Petrochemical industry: used for transportation of various oils, especially crude oil;
Textile industry: used for conveying synthetic fiber liquid, viscose liquid, dye, nylon powder, etc.
Medicine and daily chemicals: transportation of various viscous pastes, emulsions and various ointment cosmetics, etc.
Canned food industry: transportation of all kinds of sticky starch, edible oil, honey, sugar sauce, fruit pulp, cream, fish and leftovers;
Brewing industry: all kinds of fermented viscous liquids, concentrated distiller’s grains, grain product residues, all kinds of sauces, pulps and mucus containing massive solid substances, etc.;
Construction industry: spraying and conveying of cement slurry, lime slurry, paint and other pastes;
Metallurgy and mining industry: used to transport oxides and wastewater, mine drainage and liquid explosives, etc.;
Chemical industry: transportation of various suspensions, grease, colloidal slurries, adhesives, paper making, printing, high viscosity ink, black liquor of paper pulp, PVC polymer plastic paste of paper, pulp with various concentrations, short fiber slurry, etc.progressive cavity pump design

People Also Ask

A Progressive Cavity Pump is a type of positive displacement pump, which consists of a rotor and stator. The metal rotor drives the stator through the chain and begins to fill the cavities with equal amounts of liquid which then get pushed through the pump outlet.

A progressing cavity pump is a type of positive displacement pump and is also known as a progressive cavity pump, progg cavity pump, eccentric screw pump or cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.

An advantage of progressive cavity pumps is the fact that there are very low levels of shearing applied to the pumping fluid. As a result, they are commonly used for viscous materials that are shear sensitive. You may also hear these referred to as progressing cavity pumps, eccentric screw pumps, or cavity pumps.

The working principle of a direct coupled pump involves the transfer of mechanical energy from the motor to the pump through a common shaft without the need for any additional transmission devices such as belts or gears. This results in a more efficient and compact design, as well as reduced maintenance requirements compared to other types of pumps that use separate motors and transmissions.

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