The first thing to pay attention to is that this is the condition for doing a good job of leak prevention.The following are the principles and methods to avoid oil leakage. 2.1 The oil leakage of the pressure equalizing reducer is mainly caused by the addition of pressure in the box, so the reducer should be equipped with a corresponding ventilation hood to complete the pressure equalization.The ventilation hood should not be too small. The simpler inspection method is to open the upper cover of the ventilation hood. After the reducer has been working continuously for five minutes at high speed, touch the ventilation opening with your hand and feel that the pressure difference is large, indicating that the ventilation hood is small and should be changed. Large or raised fume hood. 2.2 For smooth flow, the oil spilled on the inner wall of the box should flow back to the oil pool as soon as possible, and do not remain in the seal of the shaft head to prevent the oil from leaching out gradually along the shaft head.For example, there is an oil seal ring on the shaft head of the reducer, or a semicircular groove is glued on the shaft head of the reducer upper cover, so that the oil splashed on the upper cover flows to the lower box along both ends of the semicircular groove. 2.3 Improve the shaft seal structure (1) The shaft seal of the reducer whose output shaft is a half shaft is improved; the output shaft of the reducer for most equipment such as belt conveyors, screw unloaders, and impeller coal feeders is a half shaft, which is more convenient to transform.Break down the reducer, remove the coupling, and take out the shaft seal end cover of the reducer. According to the size of the matching skeleton oil seal, machine a groove on the outside of the original end cover, and install the skeleton oil seal with the side with the spring facing inward.When reassembling, if the end cover is more than 35 mm from the inner end face of the coupling, a spare oil seal can be installed on the shaft outside the end cover. Once the oil seal fails, the damaged oil seal can be taken out, and the spare oil seal can be pushed into the end cover, then Time-consuming and laborious processes such as crashing the reducer and disassembling the coupling are omitted. (2) The shaft seal of the reducer whose output shaft is a whole shaft is improved; the output shaft of the reducer with whole shaft transmission has no coupling.In order to reduce the workload and simplify the installation procedure, a split end cover is designed, and the open oil seal is tested.The outer side of the split end cover is machined with grooves. When installing the oil seal, first take out the spring, cut the oil seal into an opening shape, put the oil seal on the shaft from the opening, and connect the opening with adhesive, and the opening is upward, and then Install the spring and push in the end cap. 1 Selection of polymer composite materials Polymer composite materials are based on polymer, metal or ceramic ultrafine powder, fibers, etc., and are compounded under the action of curing agents and curing accelerators.All kinds of materials can enhance each other's strengths and avoid weaknesses in function, and produce synergistic effects, so that the inductive function of composite materials is better than that of the original composition materials.It has strong adhesion, mechanical function, and chemical corrosion resistance, so it is widely used in the correction of mechanical wear, scratches, pits, cracks, leakage, casting sand holes, etc. of metal equipment, as well as various chemical storage tanks. , chemical corrosion protection maintenance and correction of reaction tanks and pipelines.Regarding the leakage of the static sealing point of the reducer, the polymer composite material and technology can be used to manage the leakage on site, without disassembly, and the polymer composite material is used to manage the leakage externally, which saves time and effort, and the effect is immediate and successful, and its products have excellent adhesion. , oil resistance and 2.4% elongation, overcome the influence of the vibration of the reducer, and solve the problems that cannot be solved for many years for the enterprise.If oil leaks from the static sealing point during the operation of the reducer, it can be blocked with the oil surface pressing repair agent of surface engineering technology, and then the purpose of eliminating oil leakage can be achieved.