German ss lubac pump ss lubac model ss lubac price

ss lubac pump is an important component of hydraulic systems. It relies on the reciprocating motion of plungers in the cylinder block to change the volume of the sealed working chamber, thereby achieving oil suction and pressure discharge. Plunger pumps offer advantages such as high rated pressure, compact structure, high efficiency, and convenient flow regulation. Plunger pumps are widely used in applications requiring high pressure, large flow rates, and flow adjustment, such as hydraulic presses, construction machinery, and ships.

ss lubac pump structural types

Plunger pumps are divided into two representative structural types: axial plunger pumps and radial plunger pumps. Since radial plunger pumps are a new type of high-efficiency pump with high technical content, with the acceleration of localization, radial plunger pumps will inevitably become an important part of the plunger pump application field. A radial plunger pump is a plunger pump where the reciprocating motion direction of the piston or plunger is perpendicular to the drive shaft. Radial plunger pump working principle: Drive torque is transmitted from the drive shaft via a cross coupling to the star-shaped hydraulic cylinder rotor; the stator is not subjected to other lateral forces. The rotor is mounted on the distribution shaft. The radially arranged plungers located in the rotor press against the eccentric stroke stator via hydrostatically balanced slippers. The plunger is connected to the slipper by a ball joint and locked with a retaining ring. Two retaining rings hold the slippers against the stroke stator. When the pump rotates, it presses against the inner surface of the stator relying on centrifugal force and hydraulic pressure. As the rotor turns, due to the eccentricity of the stator, the plunger performs reciprocating motion, with its stroke being 2 times the stator eccentricity. The stator's eccentricity can be adjusted by two plungers positioned radially opposite each other on the pump body. Oil inlet and outlet occur through channels in the pump body and distribution shaft, controlled by the suction port on the distribution shaft; hydraulic pressure generated within the pump body is absorbed by the hydrostatically balanced surfaces. The hydrostatic balance of the friction pair adopts an over-balance pressure compensation method, forming open-loop control. The bearings supporting the drive shaft serve only a supporting role and are not subject to other external forces. In hydraulic systems: Axial plunger pumps operate by utilizing the volume change produced by the reciprocating motion of plungers parallel to the transmission shaft within the plunger holes. Since the plunger and plunger hole of a plunger pump are both circular parts, they can achieve very high precision fit during machining.

ss lubac pump operating mode

During operation, under the action of the cam on the fuel injection pump camshaft and the plunger spring, the plunger is forced to perform up-and-down reciprocating motion, thereby completing the pumping task. The pumping process can be divided into the following three stages. Conclusion: Through the above discussion, the following conclusions are drawn: (1) The total reciprocating stroke L of the plunger is constant, determined by the cam lift. (2) The fuel supply volume per cycle depends on the fuel supply stroke; the fuel supply stroke is variable and not controlled by the camshaft. (3) The start moment of fuel supply does not change with variations in the fuel supply stroke. (4) Rotating the plunger can change the end moment of fuel supply, thereby altering the fuel supply volume. 3. Domestic series plunger-type fuel injection pumps: Domestic series plunger pumps mainly include A, B, P, Z, and Series I, II, III, etc. Serialization is based on different fuel supply requirements according to the single-cylinder power range of diesel engines, using plunger stroke, pump cylinder center distance, and structural type as the basis, combined with plunger diameters of different sizes to form several types of fuel injection pumps with unequal fuel supply volumes within one working cycle, to meet the needs of various diesel engines. The working principles and structural types of domestic series fuel injection pumps are basically the same. Taking the A type pump as an example, the structure and working principle of the plunger-type fuel injection pump are introduced. The plunger pump consists of four main parts: pumping element, fuel quantity adjustment mechanism, transmission mechanism, and pump body. It features microprocessor intelligent control, LCD display, and communication with computers, offering characteristics such as stable working pressure, low pulsation, and easy operation. It is widely used in industries such as biochemistry, pharmaceuticals, chemicals, and environmental protection, meeting the requirements for continuous constant-pressure and constant-flow liquid transport in these industries.

ss lubac pump maintenance

(1) Inspect the plunger for scratches and corrosion; replace with new parts if necessary. (2) Check the fit of the plunger assembly. Insert the plunger end into the plunger sleeve, tilt it approximately 60°; if the plunger slides down slowly under its own weight, the fit is good. (3) Check the sealing of the plunger assembly. Hold the plunger sleeve with one hand, blocking the plunger top and side oil inlet with two fingers. Pull out the plunger with the other hand; feeling significant suction indicates good sealing if the plunger immediately retracts to its original position upon release; otherwise, replace the plunger assembly. (4) Inspect the decompression band of the delivery valve assembly for wear, steps, or scratches; replace if necessary. (5) Check the fit of the delivery valve assembly. Block the lower hole of the delivery valve with one finger, gently press the delivery valve downward with another finger; if it automatically springs back to its original position when the finger leaves the top of the delivery valve, the sealing is good; otherwise, replace the delivery valve assembly. (6) Inspect 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 plunger 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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