ATOS gear pump PFG-218-D in stock

Brand

ATOS/Italian Atos

ATOS Stack Valve, ATOS Solenoid Valve, ATOS Amplifier, ATOS Solenoid Directional Valve

ATOS Gear Pump Structural Features

(1) Simple structure and low price;

(2) Low operating requirements and wide application;

(3) The end cover and the inter-tooth grooves of the gear form many fixed sealed working chambers, which can only be used as a metering pump.

The gear adopts a new technology with the highest international level in the 1990s—the double circular arc sine curve tooth profile. Compared with involute gears, its outstanding advantage is that there is no relative sliding on the tooth profile surface during gear meshing, so there is no wear on the tooth surface, balanced operation, no fluid trapping phenomenon, low noise, long service life, and high efficiency. This pump breaks away from the constraints of traditional design, allowing gear pumps to enter a new field in design, production, and use.

The pump is equipped with a differential pressure safety valve for overload protection. The full backflow pressure of the safety valve is 1.5 times the rated discharge pressure of the pump. It can also be adjusted separately within the allowable discharge pressure range according to actual needs. However, this safety valve cannot be used as a pressure reducing valve for extended periods; if necessary, a separate pressure reducing valve can be installed on the pipeline.

The ATOS gear pump features an integrated gear and shaft, employing a through-body hardening process for extended service life. The "D" type bearing incorporates a forced lubrication mechanism, allowing polymer to pass through the bearing surface and return to the pump inlet side, ensuring effective lubrication of the rotating shaft. This characteristic reduces the possibility of polymer retention and degradation. The precision-machined pump body allows for a precise fit between the "D" type bearing and the gear shaft, ensuring the gear shaft is not misaligned and preventing gear wear. The Parkool seal structure, combined with the PTFE lip seal, forms a water-cooled seal. This seal does not actually contact the shaft surface; its sealing principle is based on cooling the polymer to a semi-molten state to form a self-sealing effect. Alternatively, a Rheoseal seal can be used, which has reverse spiral grooves machined on the inner surface of the shaft seal, allowing the polymer to be back-pressurized back to the inlet. For ease of installation, the manufacturer has designed an annular bolt mounting surface for compatibility with flange mountings on other equipment, making the manufacture of cylindrical flanges easier.

The concept of an ATOS gear pump is quite simple: its most basic form consists of two identical gears meshing and rotating within a tightly fitted housing. The housing's interior is shaped like an "8," housing the two gears with their outer diameter and sides tightly fitted to the housing. Material from the extruder enters the space between the two gears at the suction inlet, filling this space. As the gears rotate, the material moves along the housing and is finally discharged when the two gears mesh.

The discharge pressure of an ATOS gear pump depends on the resistance at the pump outlet. A gear pump is a rotary pump that transports or pressurizes liquids by relying on the change and movement of the working volume formed between the pump cylinder and the meshing gears. The structure of an external meshing double gear pump: A pair of meshing gears and the pump cylinder separate the suction chamber and the discharge chamber. As the gears rotate, the inter-tooth volume at the point where the gear teeth disengage in the suction chamber gradually increases, the pressure decreases, and liquid enters the inter-tooth space under the pressure difference. As the gears rotate, the liquid between each tooth is carried to the discharge chamber. At this point, the inter-tooth volume at the point where the gear teeth mesh in the discharge chamber gradually decreases, discharging the liquid. Gear pumps are suitable for conveying lubricating liquids that are free of solid particles, non-corrosive, and have a wide viscosity range. Pump flow rates can reach 300 m³/h, and pressures can reach 3 × 10⁷ Pa. They are commonly used as hydraulic pumps and for conveying various oils.

ATOS gear pumps are a type of positive displacement pump, consisting of two gears, a pump body, and front and rear covers forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in the liquid. Conversely, the volume of the space on the meshing side decreases, forcing the liquid into the pipeline. The suction and discharge chambers are separated by the meshing line of the two gears. The pressure at the discharge port of the gear pump depends on the resistance at the pump outlet.

The following are the ATOS gear pump models:

ATOS PFG-120

ATOS PFG-128

ATOS PFG-135

ATOS PFG-142

ATOS PFG-160

ATOS PFG-174

ATOS PFG-187

ATOS PFG-199

ATOS PFG-211

ATOS PFG-214

ATOS PFG-216

ATOS PFG-218

ATOS PFG-221

ATOS PFG-327

ATOS PFG-340 ATOS Gear Pump PFG-3

ATOS Gear Pump PFG-210

ATOS Gear Pump PFG-114/D

ATOS Gear Pump PFG-120/D

ATOS Gear Pump PFG-128/D

ATOS Gear Pump PFG-142/D

ATOS Gear Pump PFG-160/D

ATOS Gear Pump PFG-174/D

ATOS Gear Pump PFG-187/D

ATOS Gear Pump PFG-199/D

ATOS Gear Pump PFG-210/D

ATOS Gear Pump PFG-211/D

ATOS Gear Pump PFGXF-114/D

ATOS Gear Pump PFGXF-120/D ATOS gear pump PFGXF-128/D

ATOS gear pump PFGXF-142/D

ATOS gear pump PFGXF-160/D

ATOS gear pump PFGXF-174/D

ATOS gear pump PFGXF-187/D

ATOS gear pump PFGXF-199/D

ATOS gear pump PFGXF-210/D The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi