German Universal Hydraulik pump Universal Hydraulik model Universal Hydraulik price

Universal Hydraulik pump is an important device in hydraulic systems. It relies on the reciprocating motion of the plunger in the cylinder body to change the volume of the sealed working chamber, thereby achieving oil suction and pressure discharge. Plunger pumps have 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, and flow regulation, such as hydraulic presses, construction machinery, and ships.

Universal Hydraulik pump classification

Plunger pumps are generally divided into single plunger pumps, horizontal plunger pumps, axial plunger pumps, and radial plunger pumps. 1) Single plunger pump: The main structural components are an eccentric wheel, plunger, spring, cylinder body, and two check valves. A sealed volume is formed between the plunger and the cylinder bore. One rotation of the eccentric wheel causes the plunger to reciprocate once vertically; downward motion sucks oil, and upward motion discharges oil. The volume of oil discharged per revolution of the pump is called displacement, which depends only on the pump's structural parameters. 2) Horizontal plunger pump: Horizontal plunger pumps consist of several plungers (generally 3 or 6) installed in parallel. A 1 crankshaft drives the plungers to reciprocate via connecting rod sliders or directly via an eccentric shaft, achieving a hydraulic pump for suction and discharge of liquids. They also use valve-type distribution devices and are mostly fixed-displacement pumps. Emulsion pumps in coal mine hydraulic support systems are generally horizontal plunger pumps. Emulsion pumps are used at coal mining faces to provide emulsion for hydraulic supports. Their working principle relies on the rotation of the crankshaft to drive the Piston to reciprocate, achieving liquid suction and discharge. 3) Axial type: Axial plunger pump (English name: Piston pump) is a plunger pump where the reciprocating motion direction of the piston or plunger is parallel to the central axis of the cylinder body. Axial plunger pumps operate by utilizing the volume change generated by the reciprocating motion of plungers parallel to the drive shaft within the plunger bores. Since both the plunger and the plunger bore are circular parts, they can achieve very precise mating, resulting in high volumetric efficiency. 4) Straight-axis swashplate type: Straight-axis swashplate plunger pumps are divided into pressure-supply type and self-priming type. Pressure-supply type hydraulic pumps mostly use pressurized tanks. For hydraulic tanks relying on air pressure for supply, after each machine start-up, operation must wait until the hydraulic tank reaches the required operating air pressure. Starting the machine when the hydraulic tank air pressure is insufficient 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 plunger pumps can be divided into two categories: valve distribution and shaft distribution. Valve-distribution radial plunger pumps have disadvantages such as high failure rates and low efficiency. Shaft-distribution radial plunger pumps developed in the 70s and 80s internationally overcame the shortcomings of valve-distribution radial plunger pumps. Due to the structural characteristics of radial pumps, shaft-distribution radial plunger pumps are more impact-resistant, have longer service life, and higher control precision than axial plunger pumps. For pumps with short variable strokes, displacement variation is achieved by changing the eccentricity of the stator under the action of the variable plunger and limit plunger. The maximum eccentricity of the stator is 5—9mm (depending on displacement size), and the variable stroke is very short. Moreover, 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 slipper shoe wear in axial plunger pumps, significantly improving impact resistance. 6) Hydraulic type: Hydraulic plunger pumps rely on pressurized hydraulic tanks. After each machine start-up, operation must wait until the hydraulic tank reaches the required operating air pressure. Straight-axis swashplate plunger pumps are divided into pressure-supply type and self-priming type. Pressure-supply type hydraulic pumps mostly use pressurized tanks, while some hydraulic pumps have built-in boost pumps to supply pressure oil to the inlet. Self-priming hydraulic pumps have strong self-priming capability and do not require external oil supply.

Universal Hydraulik 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 reciprocate up and down, thereby completing the pumping task. The pumping process can be divided into the following three stages. Conclusion: From the above discussion, the following conclusions are drawn: (1) The total stroke L of the plunger reciprocating motion is constant and determined by the cam lift. (2) The fuel supply volume per plunger cycle depends on the supply stroke, which is variable and not controlled by the camshaft. (3) The start moment of fuel supply does not change with variations in the supply stroke. (4) Rotating the plunger can change the end moment of fuel supply, thereby altering the fuel supply volume. 3. Domestic series plunger fuel injection pumps: Domestic series plunger pumps mainly include A, B, P, Z, and Series I, II, III. Standardization is based on different fuel supply requirements according to the single-cylinder power range of diesel engines. Based on plunger stroke, pump cylinder center distance, and structural type, different plunger diameters are matched to form several types of fuel injection pumps with unequal fuel supply volumes within one working cycle, meeting 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 plunger fuel injection pumps are introduced. The plunger pump consists of four main parts: pumping element, fuel quantity adjustment mechanism, drive mechanism, and pump body. It features microprocessor intelligent control, LCD display, and communication with computers, offering stable working pressure, low pulsation, and easy operation. It is widely used in biochemistry, pharmaceutical, chemical, environmental protection, and other industries, meeting the requirements for continuous constant-pressure and constant-flow liquid transport in these industries.

Universal Hydraulik pump maintenance

(1) Inspect the plunger for scratches and corrosion; replace with a new part if necessary. (2) Check the fit of the plunger assembly. Insert the plunger end into the plunger barrel, tilt it by 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 barrel, block the oil inlet at the top and side of the plunger with two fingers. Pull out the plunger with the other hand; if significant suction is felt and the plunger immediately retracts to its original position upon release, the plunger assembly sealing is good; otherwise, replace the plunger assembly. (4) Check 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; when the finger is removed from the top of the delivery valve, if it automatically springs back to its original position, the delivery valve assembly 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.

Weidou Intelligent Technology professionally sells German Universal Hydraulik centrifugal pumps, Universal Hydraulik gear pumps, Universal Hydraulik diaphragm pumps, Universal Hydraulik centrifugal pumps, Universal Hydraulik plunger pumps, Universal Hydraulik vacuum pumps, Universal Hydraulik screw pumps, Universal Hydraulik submersible pumps, Universal Hydraulik peristaltic pumps, Universal Hydraulik lubrication pumps, Universal Hydraulik vane pumps, Universal Hydraulik metering pumps, Universal Hydraulik hand pumps, Universal Hydraulik drum pumps, Universal Hydraulik lobe pumps, Universal Hydraulik booster pumps, Universal Hydraulik liquid pumps, Universal Hydraulik air pumps. Original imports from Germany. Welcome inquiries and orders from users.