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Overview of the oil pump
An oil pump, in turn, is a lightweight and compact pump, and proposes an oil pump having a housing made of an aluminum-containing material and a movable mold member disposed in the housing, wherein the movable mold Piece is made at least partly of a sinterable material comprising an iron-based alloy containing at least one austenite, and wherein the molded part made of a sinterable material has a thermal expansion at least for the outer shell Coefficient of thermal expansion of 60%. Pump in-line, distribution, single-type, such as three categories, no matter what kind of, the key pump is a "pump" word. Pump oil quantity, pressure and time must be very accurate, and automatically adjusted according to the load. Oil pump is a sophisticated processing, manufacturing process of complex components, domestic and foreign general automotive diesel pumps are produced by the world's few professional factory. Pump to have a power source to run, it is the lower part of the camshaft driven by the engine crankshaft gear. The key part of the injection pump is the plunger, if the analogy with the hospital's common syringe, then the removable plug is called the plunger, the syringe is called the plunger sleeve, assuming that the needle Jane inside a spring loaded column One end of the plug, the other end of the plunger contacts the camshaft. When the camshaft rotates one revolution, the plunger will move up and down within the plunger sleeve once, which is the basic movement of the plunger of the fuel injection pump. Plunger and plunger sleeve is a very sophisticated processing kit. The plunger body has an inclined groove, the plunger sleeve has a small hole called the suction port, the suction port is filled with diesel oil, when the plunger inclined groove facing the suction port, the diesel into the plunger sleeve, the plunger is camshaft Top to a certain height, the plunger tilt slot and suction inlet staggered suction inlet is closed, so that diesel can neither inhalation nor can be pushed out, the plunger continues to rise when the compression of diesel, diesel pressure to a certain extent, will open a one-way Valve flocked into the nozzle, then from the nozzle into the cylinder combustion chamber. Each time the plunger discharges a certain amount of diesel fuel, only part of it is injected into the cylinder while the rest is drained off the oil return hole. The amount of fuel discharged is adjusted by increasing or decreasing the amount of oil drained back. When the plunger rises to the "upper point" and then moves down, the inclined groove of the plunger will meet with the suction port again, and the diesel oil is sucked into the plunger sleeve again, and the above action is repeated again. Inline fuel injection pump system for each piston system corresponds to a cylinder, 4 cylinder has 4 sets of plunger system, so the volume is relatively large, and more used in mid-sized cars. For example, buses and lorries on diesel engines are generally used in-line injection pump. Pump mechanical classification: Fuel injection pump Fuel injection pump is mainly used in the current car diesel engine, fuel injection pump assembly is usually by the injection pump, governor and other components installed together as a whole. Governor is to ensure that the low-speed operation of diesel engines and the maximum speed limit, to ensure that the amount of spray and speed to maintain a certain relationship between the components. The fuel injection pump is the most important diesel engine parts, diesel engine is considered as the "heart" part, it will cause the entire diesel engine malfunction. Self-priming oil pump Self-priming pump before the start of the pump filled with water (or pump shell itself has water). After the start of high-speed rotation of the impeller so that the impeller channel flow of water to the volute, then the entrance to form a vacuum, the inlet valve against the open, the suction pipe into the air within the pump and reach the outer edge of the impeller channel. Then merge with the water from the right backwater hole and flow down the volute. As the liquid in the volute continuously impact cascade, with strong air mixing, generating gas and water mixture, and continue to flow so gas and water can not be separated. The mixture is peeled off the tongue at the volute outlet and enters the separation chamber along the stub tube. The air in the separation chamber is separated and drained by the outlet pipe, while the water is still flowing back and forth to the outer edge of the impeller through the return holes and mixed with the air in the suction pipe. So repeated cycles, and gradually sucked into the air exhaust pipe, so that water into the pump to complete the process of self-absorption. Submersible pump Submersible centrifugal pump is a multi - stage centrifugal pump, mainly by the pump shaft, impeller, guide shell, pump shell and other components. Submersible centrifugal pumps can adapt to different types of oil wells. The nickel cast iron impellers and guide housings and K-500 Monel's pump shaft give the pump a satisfactory operating life at maximum strength and load. In order to meet the well conditions, components and simplify the assembly load, multi-stage submersible centrifugal pumps in the assembly form with full floating, full compression or semi-floating three, the structure is divided into radial flow and mixed flow In use, divided into standard pump, sand control pump, anti-corrosion pump. The oil pump is composed of a motor, a pump sleeve, a face shell, a rotor and a rotor elastomer. The pump sleeve and the face liner are made of high-quality steel, and the rotor is a wear-resistant nonmetallic material, so that all the frictional contact surfaces of the pump are highly resistant Grinding the friction surface, so the pump is very wear-resistant, durable and long service life; pump axial and radial are designed with a gap automatic compensation mechanism, with automatic compensation for the gap, the wear parts, durable , Lasting a high degree of vacuum to maintain the same; unique design structure, even in the opposite direction of rotation, it will not damage the parts; even if long-term use, re-enable the flexible start as usual. Suction flow can be from a very small, such as 1 liter per minute to 50 liters per minute; Suction from 2 meters to 9 meters or more; head up to 20 meters. 1. The oil pump is suitable for conveying all kinds of oil, such as heavy oil, diesel oil and lubricating oil. With copper gear, it can deliver low liquid inside point, such as gasoline and benzene. The unit also produces stainless steel gear pump which can transport drinks and corrosive liquids. 2. At the same time the pump can be applied to hard particles or fibers, suitable for a variety of viscosity. The temperature can be as high as 300 ℃, if you need to transport high temperature liquid, please use the high temperature resistant gear pump to transport the liquid under 300 ℃. 3. Pump a variety of pump-type structure is simple and compact, easy to use and maintain, with good self-priming, to help each pump before opening without pouring liquid. 4. Some pump lubrication is delivered automatically by the liquid, so the daily work without additional lubrication. 5. The use of flexible coupling transmission power to compensate for the pump caused by installation of small deviations. In the pump work by the inevitable hydraulic impact, can play a better buffering effect.