Italian ATOS gear pump PFG-210/D in stock

Brand

ATOS/Italian Atos

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 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 outlet depends on the resistance at the pump outlet.

ATOS gear pump operation and maintenance methods:

1. Starting:

(1) Before starting, check the sealing of all pipeline flanges and joints.

(2) Rotate the coupling; there should be no friction or collision noise.

(3) For the first start, inject the pumping liquid into the pump.

(4) Before starting, fully open the valves in the suction and discharge pipelines; starting with valves closed is strictly prohibited.

(5) After verifying the motor's rotation direction, start the motor.

2. Stopping:

(1) Turn off the motor. (2) Close the pump's inlet and outlet valves.

ATOS Gear Pump Structure and Principle:

The ATOS gear pump has a very simple structure. 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 inlet, filling this space. As the gears rotate, the material moves along the housing and is finally discharged when the two gears mesh. Technically, a gear pump is also called a positive displacement device, much 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 at the same time, thus the liquid is expelled. Due to the continuous meshing of the gears, this phenomenon occurs continuously, providing a continuous discharge at the pump outlet. The discharge volume is the same for each pump 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 gears, and the pump body cannot be perfectly flush, so a small amount of fluid loss is inevitable. However, the pump can still operate well, achieving 93%–98% efficiency for most extruded materials. For fluids whose viscosity or density varies during the process, this type of pump is not significantly affected. 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—for example, 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 it reaches the mechanical limit of the weakest component in the system (usually equipped with a torque limiter).

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 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 outlet depends on the resistance at the outlet. A gear pump is a rotary pump that transports or pressurizes liquid by changing and moving the working volume 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 and discharge chambers. When the gears rotate, the volume between the teeth on the suction side gradually increases, the pressure decreases, and liquid enters the space between the teeth under the pressure difference. As the gears rotate, the liquid between each tooth is carried to the discharge chamber. At this point, the volume between the teeth on the discharge side 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. The pump's flow rate can reach 300 m³/h, and the pressure can reach 3 × 10⁷ Pa. It is commonly used as a hydraulic pump and for conveying various oils. Gear pumps have a simple and compact structure, are easy to manufacture and maintain, and have self-priming capability; however, they experience significant flow and pressure pulsation and are noisy. Gear pumps must be equipped with a safety valve to prevent damage to the pump or prime mover caused by factors such as blockage of the discharge pipe, which could lead to the outlet pressure exceeding the permissible value.

ATOS gear pump model:

PFG-114

PFG-120

PFG-128

PFG-135

PFG-142

PFG-160

PFG-174

PFG-187

PFG-199

PFG-211

PFG-214

PFG-216

PFG-218

PFG-221

PFG-327

PFG-340

PFG-354

PFG-210

PFG-114/D

PFG-120/D

PFG-128/D

PFG-142/D

PFG-160/D

PFG-174/D

PFG-187/D

PFG-199/D

PFG-210/D PFG-211/D

PFGXF-114/D

PFGXF-120/D

PFGXF-128/D

PFGXF-142/D

PFGXF-160/D

PFGXF-174/D

PFGXF-187/D

PFGXF-199/D

PFGXF-210/D

The company mainly deals with European and American brands. We can source brands from any European country, including leading German brands such as: 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's subsidiary), MOOG (USA), ASCO (USA), MAC (USA), NUMATICS (USA), PARKER (USA), VICKERS (USA), ROSS (USA), Norgren (UK), OMAL (Italy), ATOS (Italy), CAMOZZI (Italy), UNIVER (Italy), and Camozzi (Italy).