German industra pump industra model industra price

industra pump is an important device in hydraulic systems. It relies on the reciprocating motion of the plunger in the cylinder block 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.

industra pump mechanical principle

The total stroke L of the reciprocating motion of the plunger in a plunger pump is constant and is determined by the cam lift. The fuel delivery volume per cycle depends on the delivery stroke; the delivery stroke is variable and is not controlled by the camshaft. The start of fuel delivery does not change with variations in the delivery stroke. Rotating the plunger changes the end of fuel delivery, thereby altering the fuel delivery volume. During operation of the plunger pump, the cam on the fuel injection pump camshaft and the plunger spring force the plunger to perform reciprocating up-and-down motion, thus completing the pumping task. The pumping process can be divided into the following two stages. 1) Fuel intake process: After the lobe of the cam rotates past, the plunger moves downward under the force of the spring, creating a vacuum in the upper space of the plunger (called the pumping chamber). When the upper end face of the plunger opens the inlet port on the plunger sleeve, diesel fuel filling the oil passage in the upper body of the fuel pump enters the pumping chamber through the port. The intake ends when the plunger reaches bottom dead center. 2) Return process: The plunger moves upward to deliver fuel. When the helical groove (cut-off edge) on the plunger aligns with the return port on the sleeve, the low-pressure oil circuit in the pumping chamber communicates with the central hole and radial hole in the plunger head and the helical groove. Oil pressure drops suddenly, and the delivery valve closes rapidly under the force of the spring, stopping fuel delivery. The plunger continues to move upward; after the lobe of the cam rotates past, the plunger moves downward again under the action of the spring. This begins the next cycle. The plunger pump is described using a single plunger as the principle. A plunger pump has two check valves with opposite orientations. When the plunger moves in one direction, negative pressure occurs in the cylinder, opening one check valve and drawing liquid into the cylinder. When the plunger moves in the other direction, the liquid is compressed, the other check valve opens, and the liquid drawn into the cylinder is discharged. This operating mode results in continuous fuel delivery during continuous motion.

industra pump operating mode

During operation, the cam on the fuel injection pump camshaft and the plunger spring force the plunger to move up and down reciprocally, thus 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's reciprocating motion is constant and determined by the cam lift. (2) The fuel supply volume per cycle of the plunger depends on the supply stroke; the supply stroke is not controlled by the camshaft and is variable. (3) The start time of fuel supply does not change with the variation of the supply stroke. (4) Rotating the plunger can change the end time of fuel supply, thereby changing the fuel supply volume. 3. Domestic series plunger fuel injection pumps: The main domestic series plunger pumps 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. 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 in one working cycle, meeting the needs of various diesel engines. The working principle and structural type 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 fuel injection pump are introduced. The plunger pump consists of four major parts: the pumping element, the fuel quantity adjustment mechanism, the transmission mechanism, and the pump body. It features microprocessor intelligent control, LCD display, and communication with computers. It has characteristics such as stable working pressure, small pulsation, and convenient operation. It is widely used in biochemistry, pharmaceuticals, chemical industry, environmental protection, and other industries, meeting the requirements for continuous constant pressure and constant flow liquid transportation in these industries.

industra 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 if 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 the 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 hydrostatic 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 testing 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 use high-load capacity bearings. Purchase products from the original manufacturer with original specifications. If switching to another brand, consult experienced personnel to check tables for replacement, aiming to maintain the bearing's precision grade and load capacity. The service life of the 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 plunger pump's life. During maintenance, try to use original factory-produced parts when replacing components. These parts may sometimes be more expensive than other counterfeit parts, but their quality and stability are better. Buying 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 spherical distribution friction pairs, 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, followed by grinding. Blind grinding should be avoided to prevent the copper layer from becoming too thin or leaking oil exposing the steel base. Plunger pumps can also use frequency converters to save energy. Engineers from Shanghai Zhengyi pointed 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, the relief valve is used for regulation to keep the working pressure stable and release the excess portion through the relief valve. The motor always runs at full speed with repeated actions, and power consumption remains unchanged. When using overflow to regulate pressure and flow, some surplus flows back to the original system, resulting in useless power in the plunger pump and low work efficiency. If using Chuangjie energy-saving frequency converters, 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 greatest advantage of this regulation method is that it can reduce the operating energy consumption of the plunger pump, with power saving effects reaching 30% or more.

Weidou Intelligent Technology professionally sells German industra plunger pumps, industra gear pumps, industra diaphragm pumps, industra centrifugal pumps, industra plunger pumps, industra vacuum pumps, industra screw pumps, industra submersible pumps, industra peristaltic pumps, industra lubrication pumps, industra vane pumps, industra metering pumps, industra hand pumps, industra barrel pumps, industra lobe pumps, industra booster pumps, industra liquid pumps, industra air pumps. Original imports from Germany. Welcome customers to inquire and order.