ATOS gear pump PFGXF-187/D in stock

Brand

ATOS/Italian Atos

ATOS piston pumps, Atos gear pumps, Atos axial piston pumps, Atos vane pumps, Atos cylinders, Atos relief valves, Atos proportional valves, Atos stack valves, Atos solenoid valves

ATOS Gear Pump Working Characteristics

Advantages: Simple and compact structure, small size, light weight, good manufacturability, low price, strong self-priming force, insensitive to oil contamination, wide speed range, able to withstand impact loads, convenient maintenance, and reliable operation.

Disadvantages: Radial force imbalance, large flow pulsation, high noise, low efficiency, poor parts interchangeability, difficult to repair after wear, and cannot be used as a variable displacement pump.

Trapped Oil Phenomenon

Cause: During the operation of an involute gear pump, due to the change in the closed volume at the gear intersection over time, a portion of the hydraulic oil is often sealed between the gears, as shown in the figure. This is called trapped oil. Because hydraulic oil is incompressible, it will cause the external gear to generate great vibration and noise, affecting the normal operation of the system.

Oil Trapping Phenomenon

Oil Trapping Phenomenon

Measures: Unloading grooves are opened on the front and rear cover plates or floating bushings. The principle for opening unloading grooves is: the distance between the two grooves is the minimum closed volume, so that when the closed volume decreases, it communicates with the pressure chamber; when the closed volume increases, it communicates with the suction chamber.

ATOS Gear Pump Structural Features

(1) Simple structure and low price;

(2) Low operating requirements and wide application;

(3) The end cover and the grooves between the teeth 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 of the tooth profile surface during gear meshing, so there is no wear on the tooth surface, balanced operation, no oil trapping phenomenon, low noise, long service life, and high efficiency. This pump breaks free 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 pump's rated discharge pressure. It can also be adjusted separately within the allowable discharge pressure range as needed. 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 in the pipeline.

The pump shaft end seal is designed in two forms: a mechanical seal and a packing seal, which can be determined according to specific usage and user requirements.

The ATOS gear pump is a type of positive displacement pump. It consists 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 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 discharge pressure of the gear pump depends on the resistance at the pump outlet. A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport or pressurize liquids. The structure of an external meshing double gear pump is described. A pair of meshing gears and a pump cylinder separate the suction chamber and the discharge chamber. As the gears rotate, the volume between the teeth at the point where the gear teeth disengage gradually increases, causing the pressure to decrease. Liquid then enters the space between the teeth under the influence of the pressure difference.

ATOS Gear Pump PFG-142

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ATOS Gear Pump PFG-211

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ATOS Gear Pump PFG-216

ATOS Gear Pump PFG-218

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ATOS Gear Pump PFG-210 ATOS gear pumps are a type of positive displacement pump. They consist 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 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 pump's outlet depends on the resistance at the pump outlet.

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 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, Helón (Norgren)

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