The use of large flow gear oil pump: Suitable for conveying non-solid particles and fibers, non-corrosive, the temperature is not higher than 80 ℃, the viscosity of 5 × 10-6 ~ 1.5 × 10-3m2 / s (5-1500cSt) lubrication Oil or other liquids of a similar nature as lubricating oils. Large flow gear pump applications: In the oil transfer system can be used as transmission, booster pump, the fuel system can be used as transmission, pressure, jet fuel pump, in all areas of industry, can be used for lubricating oil pump With large flow gear pump structural features: This series of gear pump mainly gear, shaft, pump, safety valve, shaft seal composed of the gear after heat treatment has a higher hardness and strength, together with the shaft installed in the exchange Of the sleeve operation.Pump lubrication of all parts are used in the pump output medium and automatically reached.The pump has a well-designed drain and oil tank, the gear in the work to withstand the torque of the smallest, so the bearing load Small, small wear, high pump efficiency. The pump has a safety valve as overload protection, safety valve full back pressure of 1.5 times the pump rated exclusion pressure, but also allows the discharge pressure range according to actual needs to be adjusted. Safety valve can not be used for long-term work of the valve, if necessary, can be installed separately in the pipeline from the spindle extension to the pump, clockwise rotation gear pump concept is very simple, that is, its most basic form is Two The same size of gear in a close-fitting rotation of the intermeshing within the shell, the shell is similar to the internal figure-eight-shaped, two gear inside, the outer diameter of the gear and both sides of the housing with tight fit from the extruder Of the material in the suction port into the middle of the two gears, and full of this space, with the rotation of the tooth along the housing movement, the final two teeth in the engagement of emissions in terms of gear pumps, also known as positive displacement device, that is Like a piston in a cylinder, when a tooth enters the fluid space of another tooth, the liquid is squeezed out mechanically.As the liquid is incompressible, the liquid and the tooth can not occupy the same space at the same time, In this way the fluid is eliminated and this phenomenon continues to occur due to the continuous meshing of the teeth, thus providing a continuous discharge at the outlet of the pump, the same amount of discharge per revolution of the pump The uninterrupted rotation of the drive shaft causes the pump to discharge fluid continuously, and the pump flow is directly related to the speed of the pump. In fact, there is a small amount of fluid loss in the pump, which makes the pump inefficient 100% because of these fluids Used to lubricate both sides of the bearing and gear, and the pump body can not be seamlessly matched, it can not make 100% of the fluid discharged from the outlet, so a small amount of fluid loss is inevitable. However, the pump can still run well, For most extruded materials, efficiencies of 93% to 98% are still achievable and for pumps with varying viscosity or density in the process, the pump is not affected too much. If there is a damper, such as at the outlet Place a screen or restrictor on the side, and the pump will push the fluid through them. If the dampener changes during operation, ie if the screen becomes dirty, clogged, or if the restrictor's back pressure is increased, then the pump A constant flow rate will be maintained until the mechanical limit of the weakest part of the installation (usually fitted with a torque limiter) is practically limited. There is actually a limit to the speed of a pump, depending on the process fluid, if The oil is delivered and the pump is able to rotate at a high speed, but this limit is drastically reduced when the fluid is a highly viscous polymer melt.Pushing the highly viscous fluid into the suction side Two-tooth space is very important, such as If the space is not full, the pump will not be able to drain the exact flow rate, so PV values ​​(pressure × flow rate) are another limiting factor and a process variable. As a result of these limitations gear pump manufacturers will offer a range of products , That is, different specifications and displacement (discharge per revolution per week.) These pumps will be used in conjunction with specific applications, so that the system capacity and price to achieve the best.
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