Rubber rotor pump for sewage sludge treatment

The rubber rotor pump for sewage sludge treatment is a self-priming positive displacement pump. Two rotors mounted on two shafts are driven in opposite directions by timing gears. Small sealed chambers are formed between the rotors and the pump casing. As the rotors turn, air at the suction end is expelled to create a vacuum, the medium is drawn in, and the medium filling the chambers is continuously pushed by the rotating rotors from the suction end to the discharge end, so that the pump runs continuously. The direction of product transfer through the rotary lobe pump can be reversed simply by changing the direction of rotor rotation.

Working Principle:

Stage 1: A pair of closely meshing rotors rotate in opposite directions, progressively expelling the air at the suction end and thereby creating a vacuum there, so that the medium is forced in by atmospheric pressure.
Stage 2: The medium enters the sealed chambers between the rotors and the pump chamber and is progressively pushed by the rotors toward the discharge end.
Stage 3: The medium is continuously pushed toward the discharge end by the rotors.
Stage 4: The medium fills the entire pump chamber and, as the driver runs, continuous transfer of the medium is achieved.

Single-Bearing Support Structure Drawing:

13	Flat Liner Plate	2
12	Main Shaft	1
11	Reduction Gear	1
10	Transmission Gearbox	1
9	Shaft Gear	1
8	Connecting Body	1
7	Timing Gear	1
6	Gearbox	1
5	Inner Mechanical Seal	2
4	Driven Shaft	1
3	Rotor	2
2	Pump Casing	1
1	Single Support Pump Cover	1
NO.	Description	Qty.

Double-Bearing Support Structure Drawing:

No.	Description	Qty.
1	Double-Support End Cover	1
2	Pump Casing	1
3	Rotor	2
4	Driven Shaft	1
5	Inner Mechanical Seal	2
6	Gearbox	1
7	Timing Gear	1
8	Connecting Body	1
9	Shaft Gear	1
10	Variable-Speed Gearbox	1
11	Reduction Gear	1
12	Main Shaft	1
13	Flat Gasket	2
14	Outer Mechanical Seal	2

Product Features:

1.High efficiency and energy saving: The rubber-coated rotors form sealed chambers with the pump chamber as they rotate, reducing leakage, improving pump efficiency and saving energy.
2.Low noise and no shearing: The rubber-coated rotors transfer medium smoothly with low pulsation and low shear force, and can handle gas/solid/liquid mixed media and shear-sensitive media. The rubber provides good vibration and noise damping and effectively reduces the pump noise level.
3.Wear and corrosion resistance: The rubber material offers good wear resistance and corrosion resistance, extending pump service life.
4.High adaptability: The elasticity of the rubber-coated rotors enables them to adapt to different media. The symmetrical structure allows bi-directional pumping, and the pumps cover a wide viscosity range, from low-viscosity to semi-solid and particle-laden media.
5.No manual priming required: Strong self-priming capability with a suction lift of up to 8 m; flow range 1 – 2,000 m³/h.
6.Easy maintenance: The rubber-coated rotor structure is simple and easy to maintain and replace.

Applications:

Suitable for transferring crude oil, water-oil mixtures and mixtures of coalbed methane and water in the petroleum industry, municipal or industrial wastewater treatment, mining and heavy industry, daily chemicals, the food industry and the pharmaceutical industry.

Performance Parameters: