Rinse bushing and rinsing device

Abstract

The invention belongs to the field of machinery maintenance and relates to a rinse bushing and a rinsing device used for precision valve bushing type parts of aero-engine fuel oil accessories. The rinse adaptor bushing is provided with a stepped hole in the axial direction. The stepped hole at least comprises two bushing mounting pressing end faces. Through the rinse bushing and the rinsing deviceprovided by the invention, the fitness degree is high, there is no need to replace the rinse bushing, rinsing fluid is not prone to leakage, and the rinsing efficiency can be effectively improved.

Description

technical field [0001] The invention belongs to the field of mechanical maintenance, and relates to a flushing bushing and a flushing device, in particular to a flushing bushing and a flushing device for a precision valve bushing part of an aero-engine fuel accessory. Background technique [0002] Precision valve coupler (see figure 1 as well as figure 2 ) is a mechanical component that uses valve clearance, steps and bushing windows to regulate oil flow. It belongs to high-precision and complex parts in aviation accessories. Its matching clearance is less than 0.004mm, and the roughness of the working surface is required to be above Ra0.05. The working process is the relative movement between the valve and the bushing, and the working process must be flexible and free of stagnation. Therefore, in the repair process of precision valve parts, cleanliness control is the key to ensure the repair quality of such components. It is precisely because of the above characteristic...

AI Technical Summary

Problems solved by technology

[0014] 1) The flushing tool is only suitable for flushing small batches of similar parts, not for flushing complete sets of accessory repair parts;

[0015] 2) There are a large number of flushing bushes on site, which is inconvenient for storage;

[0016] 3) When flushing, the flushing bush is replaced each time, which affects the flushing efficiency;

[0017] 4) When the flushing bush is replaced, because the bushing installation and compression end surface is flat and has no centering effect, the end surface of the part is not easy to completely contact and compact the bushing installation and compression end surface, and the flushing fluid is easy to leak during flushing, reducing the flushing effect. When flushing, it is necessary to adjust and replace the flushing bush at any time according to the installation of the parts, which seriously affects the flushing efficiency;

[0018] 5) The flushing bushes are plastic parts and stored in packages. No matter how many parts are flushed each time, all the flushing bushes must be cleaned after flushing, which requires a large workload and high labor intensity;

[0019] 6) Every time the door of the flushing cabinet is opened, the flushing oil mist is very large, and the flushing bush is frequently replaced, and the flushing fluid will cause great harm to the operator;

[0020] 7) Due to the different structural dimensions of the complete set of accessories and precision valve parts, it is impossible to realize the flushing of the bushing without replacement during the entire flushing process.

[0021] Moreover, the structure of aviation fuel adjustment accessories is extremely complex, and the characteristics of its precision pair flushing are: the number of parts that need to be flushed is large, and there are more than 30 parts in one attachment; the structure of the parts is very different, and it is necessary to prepare in advance corresponding to the number of parts. Flushing bushings; there are many types of accessories for on-site repairs, and different types of accessories are repaired every day. The repair site needs a large number of flushing bushings of various specifications and sizes; accessory repairs are carried out in one piece. According to the production arrangement, each time The types and quantities of flushing parts are different during flushing, and the flushing bushing needs to be adjusted and replaced at any time during the flushing process according to the flushed parts

Images