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, distributed and single 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 syringe 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. Fuel injection pump is mainly used in the current automotive diesel engine, fuel injection pump assembly is usually composed of fuel 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 multistage centrifugal pump, mainly by the pump shaft, impeller, guide shell, casing 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. The main components of the pump are: camshaft, roller body, plunger and plunger sleeve, plunger spring, rotating sleeve and gear ring, the valve and the seat and the pressure pipe and so on. The plunger sleeve and plunger are a pair of major precision couplings in the fuel injection pump. After careful processing and mutual research, their diameter clearance is only 0.001-0.003mm, which can only be changed in pairs and can not be exchanged separately. The plunger sleeve has two holes to make the inner cavity of the plunger sleeve communicate with the oil channel and the longitudinal groove of the right oil hole, wherein the screw is inserted so that the plunger sleeve can be fixed in the pump body and can not be rotated. The upper part of the plunger has an annular groove which communicates with the upper end face of the plunger with a longitudinal groove. Helical hypotenuse from the longitudinal groove to adjust the amount of oil supply. The lower part of the plunger has two shoulders and flanges. The plunger shoulder is inserted in the cutout of the rotating sleeve. The rotating sleeve is freely mounted on the plunger sleeve. The open ring gear is again screwed on the rotating sleeve and meshed with the gear rod. The gear rack is mounted in the longitudinal bore of the pump body and is connected to the governor lever. When the gear rod moves axially under the action of the joystick and the governor, the rotating sleeve and the plunger on each oil pump also rotate by a certain angle. Lower flange with plunger spring on plunger flange. Spring upper bearing on the pump body. The function of the spring is to move the plunger down. The cam on the camshaft acts on the plunger through the roller body to move it upwards. Roller body is the driving body between the cam and the plunger, which itself is subject to lateral thrust so that the plunger is only subjected to axial force. The lower part of the roller body is provided with a roller which is arranged on the needle roller bearing, and the upper end of the roller body is screwed into the adjusting screw and the insurance nut.
Steel Bar Grating , also known as Welded Steel Bar Grate, is extremely strong and durable for all load bearing applications and is primarily used for pedestrian and light vehicle traffic. Steel Bar Grating is available in a variety of bearing bar spacing and thicknesses depending on applications and load requirements. Available in either smooth top or serrated for slip resistance.
Specification
Material: Carbon steel, Stainless steel, Aluminium
Surface type: Smooth or Serrated
Finish: Natrual, Hot-dipped galvanized, Polish, Powder coating
Workability: Easy to Weld, Cut, Form and Machine
Description of grating: Bar thickness*Bar height, Distance of bearing bar*Distance of crossing bar, Length*Width
Available Sizes: 3ft x 1ft, 3ft x 2ft, 3ft x 4ft, 3ft x 6ft, 3ft x 8ft, 3ft x 10ft, 3ft x 20ft or Cut to Size.
Applications: Walkways, flooring, ramps, bridge flooring, trench and drainage covers, mezzanines, platforms, stair treads, etc.
Bar Grating
Bar Grating,Steel Grating,Galvanized Steel Grating,Steel Bar Grating
Anping County Guorun Hardware Mesh Products Co., Ltd. ,