German ilclube pump ilclube model ilclube price

ilclube pump is a typical positive displacement hydraulic machine, driven by a prime mover, converting input mechanical energy into pressure energy of the liquid, and then inputting it into the system in the form of pressure and flow. It is the power source of the hydraulic system. Since it can transport liquids under high pressure, it is widely used in various industries in industrial production and daily life, such as water conservancy, construction, and energy. In addition, it is also widely used in shipbuilding, oil extraction, and heavy loaders.

ilclube pump classification

Piston pumps are generally divided into single piston pumps, horizontal piston pumps, axial piston pumps, and radial piston pumps. 1) Single piston pump: The structure mainly consists of an eccentric wheel, piston, spring, cylinder body, and two check valves. A sealed volume is formed between the piston and the cylinder bore. One rotation of the eccentric wheel causes the piston to reciprocate once; downward motion draws in oil, and upward motion discharges oil. The volume of oil discharged per revolution of the pump is called displacement, which depends only on the structural parameters of the pump. 2) Horizontal piston pump: Horizontal piston pumps have several pistons (generally 3 or 6) installed in parallel. A 1 crankshaft drives the pistons to reciprocate via connecting rod sliders or directly via an eccentric shaft, achieving suction and discharge of liquid. They all use valve-type distribution devices and are mostly fixed-displacement pumps. Emulsion pumps in coal mine hydraulic support systems are generally horizontal piston pumps. Emulsion pumps are used at coal mining faces to provide emulsion for hydraulic supports. The working principle relies on the rotation of the crankshaft to drive the Piston to reciprocate, achieving liquid suction and discharge. 3) Axial type: Axial Piston pump (English name: Piston pump) are piston pumps where the reciprocating motion direction of the piston or plunger is parallel to the central axis of the cylinder block. Axial piston pumps operate by utilizing the volume change generated by the reciprocating motion of pistons parallel to the drive shaft within the piston bores. Since both the piston and the piston bore are circular parts, they can achieve high-precision mating, resulting in high volumetric efficiency. 4) Straight-axis swashplate type: Straight-axis swashplate piston pumps are divided into pressure-supply type and self-priming type. Pressure-supply hydraulic pumps mostly use pressurized tanks. For hydraulic tanks relying on air pressure for supply, the machine must only be operated after the hydraulic tank reaches the required operating pressure following each startup. If the machine is started when the air pressure in the hydraulic tank is insufficient, it will cause detachment of the slipper shoes inside the hydraulic pump, leading to abnormal wear between the return plate and the pressure plate in the pump body. 5) Radial type: Radial piston pumps can be divided into two categories: valve distribution and shaft distribution. Valve-distribution radial piston pumps have disadvantages such as high failure rates and low efficiency. Shaft-distribution radial piston pumps developed in the 70s and 80s internationally have overcome the shortcomings of valve-distribution radial piston pumps. Due to the structural characteristics of radial pumps, shaft-distribution radial piston pumps are more impact-resistant, have longer service lives, and offer higher control precision than axial piston pumps. The variable stroke of short-stroke variable pumps is achieved by changing the eccentricity of the stator under the action of the variable piston and limit piston. The maximum eccentricity of the stator is 5–9mm (depending on the displacement size), and the variable stroke is very short. The variable mechanism is designed for high-pressure operation and controlled by a control valve, resulting in fast response speed. The radial structural design overcomes problems such as uneven wear of slipper shoes in axial piston pumps, significantly improving impact resistance. 6) Hydraulic type: Hydraulic piston pumps rely on pressurized hydraulic tanks. After each startup, the machine must only be operated after the hydraulic tank reaches the required operating pressure. Straight-axis swashplate piston pumps are divided into pressure-supply type and self-priming type. Pressure-supply hydraulic pumps mostly use pressurized tanks, while some hydraulic pumps have a built-in charge pump to provide pressure oil to the inlet port. Self-priming hydraulic pumps have strong self-priming capabilities and do not require external oil supply.

ilclube pump mechanical principle

The total reciprocating stroke L of the piston pump piston is constant and determined by the cam lift. The fuel supply quantity per cycle depends on the supply stroke; the supply stroke is variable and not controlled by the camshaft. The start of fuel supply does not change with the supply stroke. Rotating the piston changes the end of fuel supply timing, thereby changing the fuel supply quantity. When the piston pump operates, the cam on the fuel injection pump camshaft and the piston spring force the piston to reciprocate up and down, completing the pumping task. The pumping process can be divided into the following two stages. 1) Intake process: After the cam lobe rotates past, under the force of the spring, the piston moves downward, creating a vacuum in the upper space of the piston (called the pump chamber). When the upper end face of the piston opens the intake hole on the piston sleeve, diesel fuel filling the oil passage in the upper body of the oil pump enters the pump chamber through the oil hole. The intake ends when the piston reaches bottom dead center. 2) Return process: The piston supplies oil upward. When the helix groove (cut-off edge) on the piston aligns with the return hole on the sleeve, the low-pressure oil circuit in the pump chamber communicates with the central hole, radial hole, and helix groove at the piston head. Oil pressure drops sharply, and the delivery valve closes rapidly under spring force, stopping oil supply. The piston continues to move upward. After the cam lobe rotates past, the piston moves downward again under the spring force, starting the next cycle. The piston pump is described here using a single piston as an example. A piston pump has two check valves with opposite directions. When the piston moves in one direction, negative pressure occurs in the cylinder, opening one check valve and drawing liquid into the cylinder. When the piston moves in the other direction, the liquid is compressed, opening the other check valve and discharging the liquid drawn into the cylinder. This continuous operation forms continuous oil supply.

ilclube pump maintenance

(1) Check the piston for scratches and corrosion; replace with new parts if necessary. (2) Check the mating condition of the piston pair. Insert the piston end into the piston sleeve and tilt it approximately 60°. If the piston slides down slowly under its own weight, the mating is good. (3) Check the sealing of the piston pair. Hold the piston sleeve with one hand and block the top and side intake ports of the piston with two fingers. Pull out the piston with the other hand. If significant suction is felt and the piston immediately retracts to its original position upon release, the piston pair sealing is good; otherwise, replace the piston pair. (4) Check the decompression band of the delivery valve pair for wear, steps, or scratches; replace if necessary. (5) Check the mating condition of the delivery valve pair. Block the lower hole of the delivery valve with one finger and gently press the delivery valve downward with another finger. When the finger leaves the top of the delivery valve, if it automatically springs back to its original position, the delivery valve pair sealing is good; otherwise, replace the delivery valve pair. (6) Check the tappet body. The standard clearance between the fuel injection pump body and the tappet body is 0–0.03mm. If it exceeds 0.2mm, replace the parts. (7) Check the clearance between the piston flange and the groove of the control sleeve, which should be 0.02–0.08mm. If it exceeds 0.12mm, the control sleeve must be replaced.

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