Vane valve is one of the hydraulic spare parts，which is the rotor groove of the vane and the pump casing (stator ring) contact, the suction of the liquid from the inlet side of the pressure to the discharge side of the pump. Vane pump has a compact structure, small external dimensions, smooth operation, flow uniform pulsation and less noise, longer life, etc., small and medium flow vane pumps are used in throttling regulation of the hydraulic system, large flow vane pumps, in order to avoid power loss is too large, used in the non-flow regulation of the hydraulic system is more, so vane pumps in machine tools, hydraulic presses, vehicles, construction machinery, injection molding machines and other equipment are widely used. Vane pumps are widely used in machine tools, hydraulic presses, vehicles, construction machinery, injection molding machines and other equipment.
Vane motor according to the performance of the use of high-speed small torque motor and low-speed large torque motor two categories. The structure of high-speed small torque vane motor is similar to the balanced vane pump, which is double-acting quantitative type. Cam rotor vane motors and rolling vane motors also belong to high-speed small torque motors, the former and cam rotor pumps are almost identical. The structure of the latter is completely different from the traditional vane motor, low-speed large torque vane motor is multi-action type. To increase the displacement and output torque.
In the process of use, the vane motor also has non-negligible shortcomings, these shortcomings mainly include: the top of the vane on the inner surface of the stator compression force is too large, easy to wear; leakage link is more, affecting the efficiency and low-speed performance; processing precision requirements are higher, and the cleanliness of the oil is more demanding.
Doing a good job in the daily maintenance and repair work will effectively extend the service life of the vane motor and improve productivity. Even better products need proper use and appropriate maintenance to keep the equipment in good working condition, vane pumps are the same, if you want to make the vane pump service life long, good working condition. Need to take precautions during or before operation:
(1) Vane pumps must be properly vented when they begin operation.
(2) It is best not to have a strainer in the suction line, if it must be designed, it is recommended that the strainer mesh be larger than 250 microns, and attention must be paid to the pressure loss when the oil viscosity is high.
(3) Measure the pressure at the suction port of the vane pump, because the position of the tank and the rotation speed of the driving prime mover will affect the pressure at the suction port, and be sure to adjust it with reference to the minimum suction pressure specified in the manual of the relevant product.
(4) Be sure to check the pump's suction port and discharge port of the hydraulic oil flow rate, the diameter of the pipeline joints and other direct impact on the flow rate, the suction port of the flow rate can not exceed 1.9m / s, the flow rate of the discharge port can not exceed 6m / s. If you find that there is a super need to adjust the pipeline
(5) pay attention to the viscosity of the hydraulic oil and temperature change relationship, sometimes a slight change in temperature, the change in the viscosity of the hydraulic oil will be very large, and therefore may affect the lubrication of the parts, and therefore need to take measures to ensure that the temperature of the hydraulic oil in the permissible operating temperature range.
(6) Determine whether the selected hydraulic fluid is suitable for the application conditions, the viscosity index of the hydraulic fluid, annual grade, operating environment, operating temperature range, filterability, thermal stability, etc., are factors to be considered.
(7) vane pump in the installation, be sure to ensure that the prime mover (motor) output shaft and pump drive shaft alignment, to avoid additional loads and mechanical parts failure.
If you want to know more professional knowledge about hydraulic spare parts, you can browse the official website of Hanjiu Company, which manufactures hydraulic pumps and spare parts. The products are sold all over the world and have gained good reputation and feedback. Currently, we have agents in more than ten countries and regions around the world.
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