KCB series gear pump for conveying temperature is not higher than 150 ℃, the viscosity is not greater than 1500cst a variety of lubricity and similar properties of the liquid. The pump gear all hardened surface made, and a safety valve, the motor overload protection. First, the surface of the gear pump sticky coating principle and characteristics In recent years, the surface sticky coating technology in China's equipment maintenance has been widely used for a variety of materials, parts and equipment repair. Its working principle is to add molybdenum disulfide, metal powder, ceramic powder and fiber and other special filler adhesive, directly applied to the surface of materials or parts, so that it has a wear-resistant, corrosion and other functions, mainly for surface strengthening and repair . Its process is simple, convenient and flexible, safe and reliable, does not require specialized equipment, just a good glue coated on the surface of the cleaned parts to be cured after curing can often operate at room temperature, will not make the parts Produce thermal equivalent effect and deformation. Second, the coating process of adhesive coating sleeve cylindrical, sleeve end face fit, gear end face or pump housing bore small area uniformity of wear between 0.15-0.50mm, scratch depth of 0.2mm or more When, should use sticky coating repair process. Adhesion coating coating process: initial cleaning → pre-processing → final cleaning and activation → preparation of repair agent → coating → curing → finishing, cleaning or post-processing. Although the sticky coating process is relatively simple, but the actual construction requirements are quite strict, just choose a good adhesive, not necessarily able to obtain high viscosity strength. It is necessary to select the right adhesive, but also strictly in accordance with the correct process of adhesive coating the right adhesive, but also strictly in accordance with the correct process method line viscosity coating in order to obtain a satisfactory coating effect. Gear pump rotation direction with the inlet and outlet ports. If the first gear pump operation, or long-term idle after use, it is best to run at no-load or light load first about an hour. If abnormal temperature rise, leakage, vibration and noise are detected in advance during running-in, the machine should be shut down for inspection. Check Valve and Safety Valve It is advisable to install a check valve on the output line of the gear pump. The gear pump is enclosed in a diverter valve that supplies ink evenly to the gear pump through a single tube supply system. Pump and drive system uses a synchronous AC motor. Rotate the valve to determine the amount of ink that is in the same position as the ink jet key it replaces. Valves work in binary mode. Gear pumps are commonly used in agricultural machinery hydraulic system. After a period of gear pump performance, its performance will decline, the survey shows that the main form of gear pump damage is uniform sleeve and gear wear and scratches, the average wear is generally between 0.02-0.50mm, The depth of the mark is usually between 0.05-0.50mm. There is also a considerable proportion of gear pumps. "Gear pump channeling oil", that is, the hydraulic oil will penetrate the skeleton oil seal and overflow. Gear pump should be used. This phenomenon is ubiquitous, the main engine factory reflects strongly, gear pump oil disruption seriously affect the normal operation of the loader and gear pump reliability and environmental pollution. In order to facilitate the solution of the problem, the reason and control method of the gear pump oil seal shifting oil fault are analyzed.
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