Purchase ATOS gear pump PFG-160 (in stock)

Brand

ATOS/Italian Atos

ATOS Hydraulic Cylinders, ATOS Relief Valves, ATOS Proportional Valves, ATOS Stacking Valves

The Italian 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 pressure at the gear pump's outlet depends entirely on the resistance at the pump outlet.

Structure and Principle of the Italian ATOS Gear Pump:

The structure of the Italian ATOS gear pump is very simple. Its most basic form consists of two gears of the same size meshing and rotating within a tightly fitted housing. The interior of this housing is similar to a figure "8," with the two gears housed inside. The outer diameter and sides of the gears fit tightly against the housing. Material from the extruder enters the space between two gears at the inlet, filling it. As the gears rotate, the material moves along the housing and is finally discharged when the two gears mesh. Technically, a gear pump, also called a positive displacement device, acts like a piston in a cylinder. When one gear enters the fluid space of another, the liquid is mechanically squeezed out. Because liquid is incompressible, the liquid and the gears cannot occupy the same space simultaneously, thus the liquid is expelled. This phenomenon occurs continuously due to the constant meshing of the gears, providing a continuous discharge at the pump outlet; the discharge rate is the same per revolution. With the continuous rotation of the drive shaft, the pump continuously discharges fluid. The pump's flow rate is directly related to its rotational speed. In reality, there is a small amount of fluid loss within the pump, preventing it from reaching 100% efficiency. This is because the fluid is used to lubricate the bearings and gear sides, and the pump body cannot be perfectly flush, thus preventing 100% fluid discharge from the outlet. Therefore, a small amount of fluid loss is inevitable. However, the pump still operates well, achieving an efficiency of 93%–98% for most extruded materials. This pump is not significantly affected by fluids whose viscosity or density varies during the process. If a damper is present, such as a filter or restrictor on the outlet side, the pump will force the fluid through them. If this damper changes during operation—that is, if the filter becomes dirty or clogged, or the back pressure of the restrictor increases—the pump will still maintain a constant flow rate until the mechanical limit of the weakest component in the unit is reached (usually equipped with a torque limiter).

The following precautions should be taken when using ATOS gear pumps:

(1) The pump drive shaft and the prime mover output shaft should be installed using a flexible coupling with a coaxiality deviation of less than 0.1 mm. If a bushing coupling is used, the coaxiality deviation should be less than 0.05 mm.

(2) The transmission device should ensure that the force on the pump's drive shaft is within the allowable range.

(3) The pump's suction height should not exceed 0.5 m. (4) A mesh filter is usually installed at the pump's suction port, with a filter accuracy of less than 40μm. The filter installed on the system's return line should ideally have an accuracy of less than or equal to 20μm.

(5) The working oil should be selected strictly according to regulations, with a working temperature range of -20 to 80℃.

(6) The pump's rotation direction must be correct; that is, the pump's inlet and outlet positions must be correct. Disassembly and assembly of the pump must be strictly performed according to the manufacturer's instruction manual.

(7) Tighten the screws on the pump's inlet and outlet pipe joints. The sealing devices must be reliable to prevent cavitation and oil leakage, which would affect the pump's performance. Avoid starting the pump under load and stopping it under load.

(8) Before starting, check that the system's relief valve (safety valve) is at the set permissible pressure.

(9) For new pumps or repaired hydraulic pumps, no-load operation and a short period of overload operation should be performed before operation. Then check the pump's operating condition; leaks, impact noise, excessive heat, and excessive noise are not allowed.

(l0) If the pump is not used for a long time, it should be disconnected from the prime mover. When using it again, do not immediately use the maximum load; it should be run under no-load for at least 10 minutes. ATOS gear pumps (Italy), ATOS hydraulic gear pumps, PFG gear pumps

PFG-114 gear pump, PFG-114 hydraulic gear pump, PFG-114

PFG-128 gear pump, PFG-128 hydraulic gear pump, PFG-128

PFG-142 gear pump, PFG-142 hydraulic gear pump, PFG-142

PFG-160 gear pump, PFG-160 hydraulic gear pump, PFG-160

PFG-174 gear pump, PFG-174 hydraulic gear pump, PFG-174

PFG-199 gear pump, PFG-199 ATOS hydraulic gear pump, PFG-199

PFG-210 gear pump, PFG-210 ATOS hydraulic gear pump, PFG-210

PFG-211/DRO gear pump, PFG-211/DRO ATOS hydraulic gear pump PFG-211/DRO

PFG-214 Gear Pump PFG-214 Hydraulic Gear Pump PFG-214

PFG-218 Gear Pump PFG-218 Hydraulic Gear Pump PFG-218

PFG-221 Gear Pump PFG-221 Hydraulic Gear Pump PFG-221

Our company mainly deals in European and American brands and can source brands from any European country. For example, our advantageous 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

British brands: Helon Norgren

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