Gear pump troubleshooting Summary: The processing of automotive hardened steel parts coating PCBN cutting tool CNC wire EDM in the spline hole machining applications SinamicsG110 In the need to quickly change the direction of the motor rotation should explore China's machinery products Innovative design and development of micro-hole processing technology status and existing problems Selection and maintenance of cutting fluid The rational choice of indexable milling cutter The key technology of spindle speed The strengthening of the cutting edge and its latest development CVD diamond dressing tool China CNC The machine tool industry will usher in the golden development of 15 years Tool manufacturers to process improvement to Chengdu Institute of Tool Two research projects through the identification of the door with the loading and unloading system of the machine The first self-bolt six drilling rig Germany Engelhardt ) Company F33 three-axis CNC system by PDM Health "egg" Anhui forklift successfully developed 4.5t hydraulic pump gearbox low-voltage electrical reliability profile and development of welding teaching reform of thinkers and practitioners [Tags: CB-B-type gear pump in the dump truck and construction machinery operating mechanism used more, it is now common And troubleshooting methods are described below for reference. 1, the reasons for the vibration and noise generated and excluded (1) inhaled air ①CB-B gear pump body and both sides of the cover for direct contact with the hard seal, if the contact surface flatness does not meet the requirements, the pump At work, it is easy to breathe air.Currently, CB-B gear pump is widely used in dump truck and engineering machinery control mechanism, and its common faults and troubleshooting methods are introduced below for reference. 1, the reasons for the vibration and noise generated and excluded (1) inhaled air ①CB-B gear pump body and both sides of the cover for direct contact with the hard seal, if the contact surface flatness does not meet the requirements, the pump Easy to breathe in the air at work; also, the direct contact between the end cap of the pump and the gland, the air is also easy to invade; if the gland is a plastic product, due to its damage or deformation due to temperature changes, will seal Strictly into the air. The way to get rid of this kind of trouble is: When the flatness of the pump body or pump cover can not meet the stipulated requirements, it can be grinded back and forth on the flat steel with the "8" shaped route with the gold sand, or on the surface grinder , So that its flatness does not exceed 5μm, and the need to ensure that the plane and the hole perpendicularity requirements; For the pump cover and gland at the leak, can be coated with epoxy adhesive sealing. ② The shaft is generally sealed with a skeleton oil seal. If the locking lip spring off, or the oil seal installed, or its lips were injured, aging, will make the back end of the seal often in negative pressure and inhale the air, the general can replace the new seal to be resolved. ③ fuel tank is not enough oil, or the suction nozzle is not inserted below the oil surface, the pump will inhale the air, this time should be added to the fuel tank to the oil line; if the oil return pipe mouth exposed oil, and sometimes because of Negative pressure within the system so that the air back into the system of irrigation, so return pipe mouth generally should be inserted below the oil level. ④ pump installation location is too high from the oil surface, especially in the pump speed is reduced, because the pump can not guarantee the necessary vacuum caused by insufficient suction and inhaled air. At this point should be adjusted to the relative height of the pump and oil surface to meet the requirements. ⑤ oil filter is clogged with dirt or its capacity is too small, resulting in increased suction resistance and inhalation of air; In addition, into the port of a larger caliber may also be brought into the air. At this point, you can clean the filter, or choose a larger capacity, and out of the appropriate diameter filter. In this way, not only can prevent the inhalation of air, but also to prevent noise. (2) Mechanical reasons (1) The connection between the pump and the coupling generates vibration and noise due to the non-compliance requirements. Should be required to adjust the coupling. ② due to dirt in the oil into the pump gear and other components caused by wear and tear and noise.