German VERSA MATIC pump VERSA MATIC model VERSA MATIC price

VERSA MATIC pump is a typical positive displacement hydraulic machine, driven by a prime mover, converting input mechanical energy into liquid pressure energy, 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 loaders.

VERSA MATIC pump structural form

Plunger pumps are divided into two representative structural forms: axial plunger pumps and radial plunger pumps; since radial plunger pumps are a new type of high-tech, high-efficiency pump, with the acceleration of localization, radial plunger pumps will inevitably become an important part of the application field of plunger pumps; a radial plunger pump is a plunger pump in which 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 through a cross coupling to the star-shaped hydraulic cylinder block rotor, and the stator is not subject to other lateral forces. The rotor is mounted on the distribution shaft. The radially arranged plungers located in the rotor press tightly against the eccentric stroke stator through hydrostatically balanced shoes. The plunger is connected to the shoe via a ball joint and locked with a snap ring. Two retaining rings hold the shoes on the stroke stator. When the pump rotates, it presses against the inner surface of the stator relying on centrifugal force and hydraulic pressure. When the rotor rotates, due to the eccentricity of the stator, the plunger will perform reciprocating motion, and its stroke is 2 times the stator eccentricity. The eccentricity of the stator can be adjusted by two plungers located at opposite radial positions on the pump body. Oil inlet and outlet pass through flow channels on the pump body and distribution shaft, and are controlled by the suction port on the distribution shaft. The hydraulic pressure generated in the pump body is absorbed by the hydrostatically balanced surface. The hydrostatic balance of the friction pair adopts an over-balance pressure compensation method, forming open-loop control. The bearings supporting the drive shaft only serve 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 plunger bores. Since the plungers and plunger bores of plunger pumps are circular parts, they can achieve very high precision fits during machining.

VERSA MATIC 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 fuel pumping task. The fuel pumping process can be divided into the following three stages. Conclusion: Through the above discussion, the following conclusions are drawn: (1) The total stroke L of the plunger's reciprocating motion is constant, determined by the cam lift. (2) The fuel supply volume per cycle depends on the fuel supply stroke, which is variable and not controlled by the camshaft. (3) The start moment of fuel supply does not change with the variation of the fuel supply stroke. (4) Rotating the plunger can change the end moment of fuel supply, thereby changing 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 form as the basis, and then matching with plunger diameters of different sizes to compose several types of fuel injection pumps with unequal fuel supply volumes in one working cycle, to meet the needs of various diesel engines. The working principles and structural forms 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, with characteristics such as stable working pressure, low pulsation, and convenient operation. It is widely used in biochemistry, pharmaceuticals, chemicals, environmental protection, and other industries, meeting the requirements of these industries for continuous constant-pressure and constant-flow liquid transportation.

VERSA MATIC pump mechanical maintenance

For plunger pumps using a charge pump for oil supply, after 3000h of use, operators need to inspect the plunger pump 1-2 times daily to check whether the hydraulic pump operating sound is normal. If a decrease in hydraulic cylinder speed or stalling is found, the charge pump should be disassembled for inspection to check for scratches on the impeller edge and whether the internal gear pump clearance is excessive. For self-priming plunger pumps, the oil level in the hydraulic tank must not be lower than the lower limit of the oil gauge; sufficient hydraulic oil must be maintained. The higher the cleanliness of the hydraulic oil, the longer the service life of the hydraulic pump. The most important component of a plunger pump is the bearing. If the bearing has play, the normal clearance of the three pairs of friction pairs inside the hydraulic pump cannot be guaranteed, and the thickness of the static hydraulic support oil film of each friction pair will be damaged, reducing the service life of the plunger pump bearing. According to data provided by hydraulic pump manufacturers, the average service life of bearings is 10000h; exceeding this value requires replacement with new ones. Removed bearings cannot be tested for play without professional detection instruments; only visual inspection is possible. If scratches or discoloration are found on the roller surface, they must be replaced. When replacing bearings, pay attention to the English letters and model numbers of the original bearings. Plunger pump bearings mostly adopt high-load capacity bearings. Purchase products from the original manufacturer with original specifications. If switching to another brand, consult personnel experienced with bearings to check tables for equivalents, with the aim of maintaining the bearing's precision grade and load capacity. The length of service life of a plunger pump is related to routine maintenance, the quantity and quality of hydraulic oil, and oil cleanliness. Avoiding wear on the plunger pump friction pairs caused by particles in the oil is also an effective way to extend the service life of the plunger pump. During maintenance, try to use original factory-produced parts when replacing components. These parts are sometimes more expensive than other counterfeit parts, but their quality and stability are better. Purchasing cheap counterfeit parts may seem to save costs in the short term, but it brings hidden dangers and may cause greater harm to the use of the plunger pump. The distribution plate has two forms: flat distribution and spherical distribution. For friction pairs with spherical distribution, if the scratches on the cylinder block distribution surface are relatively shallow, they can be repaired by grinding; if the grooves on the cylinder block distribution surface are deep, 'surface engineering technology' should first be used to fill the grooves before grinding. Blind grinding should be avoided to prevent the copper layer from becoming too thin or exposing the steel base, leading to oil leakage. Plunger pumps can also use frequency converters to save electrical energy. Engineers from Shanghai Zhengyi point out that in actual production processes, plunger pumps usually regulate their working status by pressure or flow. When the actual pressure is greater than the required pressure, it is regulated by a relief valve to keep the working pressure stable, allowing the relief valve to release the excess. The motor always runs at full speed with repeated actions, and power consumption remains unchanged. When using overflow to regulate pressure and flow, part of the surplus flows back to the original system, resulting in useless power in the plunger pump and low work efficiency. If a Chuangjie energy-saving frequency converter is used, the relief valve can be set to close, and the working pressure is automatically adjusted by the energy-saving frequency converter itself to maintain stable working pressure and automatically track the equipment pressure. This achieves automated control, thereby saving energy consumption. The biggest advantage of this regulation method is that it can reduce the operating energy consumption of the plunger pump, with power saving effects reaching over 30%.

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