ATOS piston pump PVPCX2E-C-3029/31036/1D in stock

Brand

ATOS/Italian Atos

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Marine, General

ATOS Piston Pump PVPCX2E-C-3029/31036/1D in Stock

ATOS Piston Pumps, ATOS Gear Pumps, ATOS Axial Piston Pumps, ATOS Vane Pumps, ATOS Hydraulic Cylinders, ATOS Relief Valves

ATOS piston pumps utilize the volume change generated by the reciprocating motion of a piston parallel to the drive shaft within a piston bore. Because both the piston and the piston bore are circular parts, high precision fitting can be achieved during machining, resulting in advantages such as high volumetric efficiency, smooth operation, good flow uniformity, low noise, and high working pressure. However, they are sensitive to hydraulic oil contamination, have a complex structure, and are relatively expensive.

The plunger and plunger sleeve of the ATOS plunger pump are a precision pair, mated and ground together, and are not interchangeable. They require high precision, a smooth surface, and good wear resistance, with a radial clearance of 0.002–0.003 mm.

The plunger head of the ATOS plunger pump has a beveled groove cut into its cylindrical surface, communicating with the top through radial and axial holes. This is to change the circulating oil supply. The plunger sleeve has inlet and return oil holes, both communicating with the low-pressure oil chamber inside the pump body. After the plunger sleeve is installed in the pump body, it is secured with a locating screw.

Different positions of the beveled groove on the plunger head of the ATOS plunger pump result in different methods of changing the oil supply.

The delivery valve and delivery valve seat are also a precision pair, mated and ground together, and are not interchangeable. Their fit clearance is 0.01 mm.

The delivery valve is a one-way valve. Under spring pressure, the upper conical surface of the valve fits tightly with the valve seat. Its function is to isolate the high-pressure fuel line from the upper cavity of the plunger when fuel supply stops, preventing fuel from flowing back into the injection pump.

The lower part of the delivery valve has a cross-section, which serves both as a guide and allows diesel fuel to pass through. Below the conical surface of the delivery valve is a small cylindrical surface called a pressure-reducing ring. Its function is to rapidly reduce the fuel pressure in the high-pressure fuel line at the end of fuel supply, preventing dripping at the nozzle. When the ring falls into the valve seat, the upper volume rapidly increases, the pressure rapidly decreases, and injection stops quickly.

ATOS plunger pump maintenance method:

ATOS plunger pumps generally use a rotating cylinder block and end-face distribution system. A friction pair consisting of a bimetallic plate and a steel distributor plate is inlaid on the cylinder block end face. Most use a planar distribution method, making maintenance relatively convenient. The distributor plate is one of the key components of an axial piston pump. During pump operation, the high-pressure oil in the working chamber pushes the cylinder block towards the distributor plate, while the oil film pressure between the distributor plate and the cylinder block creates a hydraulic counterforce on the cylinder block, causing it to move away from the distributor plate. The hydraulic clamping force Fn of the cylinder block against the distributor plate is designed to be slightly greater than the hydraulic counterforce Ff of the distributor plate against the cylinder block, i.e., Fn/Ff = 1.05~1.1, ensuring normal pump operation and maintaining high volumetric efficiency.

The main causes of oil leakage in ATOS piston pumps are as follows:

(1) Damaged spindle oil seal or defects/scratches on the shaft;

(2) Excessive internal leakage, causing increased pressure at the oil seal, which damages or blows out the seal;

(3) The drain pipe is too thin or too long, causing leakage at the seal;

(4) Loose external oil pipes, damaged pipe joints, aged or cracked gaskets;

(5) Loose bolts in the variable adjustment mechanism, resulting in seal damage;

(6) Sand holes or poor welding in the cast iron pump casing.

ATOS plunger pump model table:

PVPC-C-3029/1D 11 /WG

PVPC-C-4046/1D

PVPC-C-4046/1S

PVPC-C-5073/1D

PVPC-C-5073/1S 10

PVPC-CH-5073/1D-IX 24DC

PVPC-CZ-5073/1D 12

PVPC-LQZ-5073/1D 11

PVPC-LW-4046/1D 10

PVPC-LZQZ-3029/1D

PVPC-LZQZ-3029/1D/18

PVPC-LZQZ-4046/1D

PVPC-LZQZ-4046/1D/18 PVPC-LZQZ-5073/1D 11

PVPC-LZQZ-5073/1D/18

PVPC-R-3029/1D 11

PVPC-R-4046/1D 11

PVPC-SLE-3029/10 20

PVPC-SLE-4046/1D 20

PVPCX2E-C-3029/31036/1D 10

PVPCX2E-LW-3029/31036/1D 10

PVPC-C-3029

PVPC-C-4046

PVPC-C-5073

PVPC-C-5090

PVPC-CH-3029

PVPC-CH-4046

PVPC-CH-5073 PVPC-CH-5090

PVPC-R-3029

PVPC-R-4046

PVPC-R-5073

PVPC-R-5090

PVPC-L-3029

PVPC-L-4046

PVPC-L-5073

PVPC-L-5090

PVPC-LW-3029

PVPC-LW-4046

PVPC-LW-5073

PVPC-LW-5090

The Italian ATOS piston pump is a type of reciprocating pump, belonging to the category of volumetric pumps. Its piston is driven by the eccentric rotation of the pump shaft, resulting in reciprocating motion. Both its suction and discharge valves are one-way valves. When the plunger is pulled outward, the pressure in the working chamber decreases, the outlet valve closes, and when the pressure is lower than the inlet pressure, the inlet valve opens, allowing liquid to enter. When the plunger is pushed inward, the pressure in the working chamber increases, the inlet valve closes, and when the pressure is higher than the outlet pressure, the outlet valve opens, allowing liquid to exit. When the drive shaft rotates the cylinder block, the swashplate pulls the plunger out of or pushes it back into the cylinder block, completing the oil suction and discharge process. The oil in the working chamber formed by the plunger and cylinder bore communicates with the pump's suction and discharge chambers through the distribution plate. The variable displacement mechanism is used to change the swashplate's tilt angle; adjusting the swashplate's tilt angle changes the pump's displacement.

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