Connecting device for inner and outer pipes of MQL (Minimal Quantity Lubrication) system

Abstract

The invention discloses a connecting device for inner and outer pipes of an MQL (Minimal Quantity Lubrication) system and belongs to the field of machining. The connecting device for the inner and outer pipes of the MQL system comprises a connecting housing A, a connecting housing B, a connecting inner core A, a connecting inner core B, a quick female adapter A, a quick female adapter B, a connecting inner core O-type sealing ring, a connecting inner core O-type sealing ring and a copper washer. The connecting housing A and the connecting housing B are in threaded connection with each other to ensure the alignment of the pipes and the stability and efficiency of connection. The connecting device can be in direct plug-in connection with the inner and outer pipes, the connecting housings and the connecting inner cores can be used in random combination during mounting, the connection is quick and stable, and the sealing is tight and reliable. Lubrication media have good transport flowability in the connecting device, and the connecting device cannot be blocked easily and has no leakage loss. Meanwhile, the connecting device can well isolate the lubrication media transported in the inner and outer pipes, avoids the phenomenon of mixing of the inner and outer lubrication media. The connecting device is small in size, light in weight, low in material consumption and cost and suitable for batch production.

Description

technical field [0001] The invention relates to a connecting piece for inner and outer pipes of a micro-quantity lubrication system, in particular to a connecting device for inner and outer pipes of a micro-quantity lubrication system in the form of inner and outer pipes, which can realize the functions of changing the length and diameter of the inner and outer pipes, and facilitating the arrangement of system pipelines. The utility model relates to an accessory of a cutting fluid supply device belonging to the field of mechanical processing. Background technique [0002] In the field of mechanical processing, traditional pouring cutting uses a large amount of cutting fluid, which brings a series of problems such as environmental pollution, endangering the health of operators and increasing manufacturing costs. Therefore, governments of various countries have successively promulgated laws, regulations, standards, etc. on environmental protection to limit the use of cutting f...

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Problems solved by technology

[0006] Aiming at the problems of changing the length of the inner and outer tubes of the micro-quantity lubrication system, changing the diameter of the pipeline, repairing and replacing, etc., the invention designs an inner and outer tube connecting device to realize the connection function of the inner and outer tubes, and at the same time ensure the lubricating medium in the inner and outer tubes effective transmission of

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