Reducer is a large number of industrial enterprises equipped with the application of equipment, once the oil spills, not only cause economic losses, serious oil spills will cause reducer less oil, oil off, the gear meshing surface wear and tear worse, resulting in bite welding or peeling, leading to equipment ACCIDENT. And the oil spill on the surrounding environment, powerful, corrosive to the foundation, so that not only undermined the production of civilization but also a lot of waste recovery of renewable lubricants.

1 reducer leakage analysis

1.1 pressure tank increased

In a closed reducer, each pair of gear meshing friction will be issued by the heat, according to Boyle special law, with the longer running time, so that the temperature inside the gearbox gradually increased, while the reduction in the volume of the chassis The same, so the pressure inside the box increases, the box of oil splashed, sprinkled on the inner wall of the gear box. As the oil permeability is stronger, under the pressure in the box, which seal is not strict, where the oil will seep out.

1.2 reducer structure design unreasonable caused oil spills

If the design of the reducer without hood, reducer can not be equalized, resulting in higher and higher pressure inside the tank, the phenomenon of oil spills.

1.3 too much fuel

During operation of the reducer, the sump is agitated very much. The lubricant splashes everywhere in the machine. If the amount of refueling is excessive, a large amount of lubricating oil accumulates on the shaft seal, the joint surface and the like, resulting in leakage.

1.4 improper maintenance process

In the equipment overhaul, due to the combination of dirt removal is not complete, or improper selection of sealant, seal installed in the opposite direction, not timely replacement of seals can also cause oil spills.

2 governance reducer leakage measures

First of all, ideological importance, which is a good leak-proof work premise. The following describes the principle of preventing oil leakage.

2.1 are pressure

Gearbox oil leakage is mainly due to increased pressure inside the tank caused, so reducer should be equipped with the corresponding hood, in order to achieve pressure. Ventilation hood can not be too small, a more convenient way to check is to open the hood cover, reducer to run at high speed for five minutes, touch the vent, feel pressure is large, the hood is small, you should change the larger Or raise the hood.

2.2 smooth

To sprinkle the tank wall of the oil back to the tank as soon as possible, do not persist in the shaft seal to prevent the gradual leaching of oil along the shaft head. If the reducer shaft design oil seal ring, or reducer cover located at the shaft head sticky half round groove, so that the splash cover the oil along the semicircular groove flow to the lower box.

2.3 improve the shaft seal structure

(1) The shaft reducer with the output shaft of semi-shaft is improved in shaft seal; the output shaft of reducer of most of the equipment such as belt conveyor, screw unloader and impeller coal feeder is semi-shaft, which is more convenient to transform. Disassemble the reducer, remove the coupling, remove the reducer shaft seal cover, in accordance with the supporting skeleton seal size, outside the original end cover car processing tank, fitted with skeleton oil seal, spring side. If the end cap is more than 35mm away from the inner side of the coupling, a spare oil seal can be installed on the shaft on the outside of the end cap. Once the oil seal fails, the damaged oil seal can be removed and the spare oil seal can be pushed into the end cover. To understand the body reducer, split coupling and other time-consuming and laborious process.

(2) the output shaft reducer shaft seal to improve the whole shaft; shaft reducer output shaft drive shaft coupling, according to (1) program transformation, the workload is too large is not realistic. In order to reduce the workload and simplify the installation process, a split end cap was designed and an attempt was made to open the oil seal. Can be split cover the outer side of the car processing tank, the first oil seal installed when the spring out, saw the oil seal was open, the oil seal from the opening set on the shaft, with the adhesive to open the mouth, the mouth up, reload On the spring, push the end cap can be.

2.4 using polymer composites

Polymer composite material is a polymer, metal or ceramic ultrafine powder, fiber, etc. as a base material, curing agent, curing accelerator under the action of composite materials. A variety of materials complement each other in terms of performance, resulting in synergies, the comprehensive performance of composite materials than the original composition. With strong adhesion, mechanical properties, and chemical corrosion resistance and other properties, which are widely used in mechanical wear and tear of metal equipment, scratches, pits, cracks, leakage, casting trachoma and other repair and a variety of chemical storage tanks , Reaction tank, pipeline chemical corrosion protection and repair.

For the static sealing point reducer leakage can be polymer composites and technology on-site treatment of leakage, without disassembly, the use of polymer composite materials in the external leakage control, saving time and effort, the immediate effect, the products have superior adhesion, Oil resistance and 350% of the stretch, to overcome the impact of reducer vibration, well for many years to solve the problem can not be solved. If the reducer operating static sealing point leakage, surface engineering technology can be used oil surface emergency repair adhesive blocking, so as to achieve the purpose of eliminating oil spills.

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