German sunfab pump sunfab model sunfab price

sunfab 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.

sunfab pump usage method

For piston pump cylinders with copper bushings installed, the method of replacing the copper bushing can be used for installation. First, trim the outer diameter of a set of plunger rods to a uniform size, and then polish the outer diameter with sandpaper of 1000# or higher. Three methods for installing copper bushings in the cylinder block: a) Heating the cylinder block for hot assembly or cryogenic compression of the copper bushing for interference fit; b) Adhesive assembly using Loctite; this method requires grooves on the outer diameter surface of the copper sleeve; c) Tapping the cylinder bore, machining threads on the outer diameter of the copper bushing, applying Loctite, and screwing it in for assembly. Installation methods for cylinder blocks and copper bushings combined by sintering are as follows: a) Use a lapping bar to manually or mechanically lap and repair the cylinder bore; b) Use a coordinate boring machine to re-bore the cylinder block hole; c) Use a reamer to repair the cylinder block hole. Methods using "surface engineering technology" are as follows: a) Electroplating technology: Plate a layer of hard chrome on the plunger surface; b) Brush plating technology: Brush plate wear-resistant materials on the plunger surface; c) Thermal spraying, arc spraying, or electric spraying: Spray high-carbon martensitic wear-resistant materials; d) Laser cladding: Clad high-hardness wear-resistant alloy powder on the plunger surface. e) Cylinder blocks without copper bushings in the cylinder bore are mostly made of ductile iron, preparing an amorphous thin film or coating on the inner wall of the cylinder block. Because of this special material on the inner wall of the cylinder bore, a hard-hard friction pair can be formed.

sunfab pump operating mode

During operation, under the action of the cam on the injection pump camshaft and the plunger spring, the plunger is forced to reciprocate up and down, 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 reciprocating motion is constant, determined by the cam lift. (2) The fuel supply volume per cycle of the plunger 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 change 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 injection pumps: Domestic series plunger pumps mainly include A, B, P, Z, and Series I, II, III. 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, and matching with plunger diameters of different sizes to form several types of injection pumps with unequal fuel supply volumes in one working cycle, to meet the needs of various diesel engines. The working principle and structural type of domestic series injection pumps are basically the same. Taking the A type pump as an example, the structure and working principle of the plunger-type injection pump 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, with characteristics such as stable working pressure, low pulsation, and convenient operation. It is widely used in biochemistry, pharmaceutical, chemical, environmental protection, and other industries, meeting the requirements of these industries for continuous constant-pressure and constant-flow liquid transportation.

sunfab pump mechanical maintenance

For plunger pumps supplied with oil by a boost pump, after 3000h of use, operators need to check 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 boost pump should be disassembled for inspection to check whether there is scratching on the edge of the impeller and whether the internal gear pump clearance is too large. 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 destroyed, 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 can be used. 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 changing to another brand, consult personnel experienced in bearings to check tables for replacement, with the aim of maintaining the precision grade and load capacity of the bearing. The service life of the plunger pump is related to daily maintenance, the quantity and quality of hydraulic oil, and oil cleanliness. Avoiding wear caused by particles in the oil to the plunger pump friction pairs 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 valve plate has two forms: flat distribution and spherical distribution. For the friction pair of spherical distribution, when the scratches on the cylinder block distribution surface are relatively shallow, they can be repaired by lapping; when the grooves on the cylinder block distribution surface are deeper, the "surface engineering technology" method should be used first to fill the grooves, and then lapping should be performed. Blind lapping 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: 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 the relief valve to keep the working pressure stable, allowing the relief valve to release the excess part. 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 overflows back to the original system, resulting in useless power in the plunger pump, low work efficiency. If Chuangjie energy-saving frequency converters are 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 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 sunfab plunger pumps, sunfab gear pumps, sunfab diaphragm pumps, sunfab centrifugal pumps, sunfab plunger pumps, sunfab vacuum pumps, sunfab screw pumps, sunfab submersible pumps, sunfab peristaltic pumps, sunfab lubrication pumps, sunfab vane pumps, sunfab metering pumps, sunfab hand pumps, sunfab drum pumps, sunfab cam pumps, sunfab booster pumps, sunfab liquid pumps, sunfab air pumps. Original imports from Germany. Welcome customers to inquire and order.