Expander Driven Refrigeration Low Temperature Cooling Nanoparticle Jet MQL Supply System

Abstract

The invention discloses an expander-driven refrigeration low-temperature cooling nanoparticle jet micro-lubrication supply system, comprising a low-temperature gas generating device, the low-temperature gas generating device is connected to a nano-fluid micro-lubrication supply system after being decelerated by a harmonic gear reducer, and the low-temperature gas The generating device is connected with the gas distribution control valve, the nanofluid micro-lubrication supply system is also connected with the external mixing nozzle, and the gas distribution control valve is used to control the gas flow; the system device can effectively reduce the thermal damage of grinding and improve the efficiency of the grinding process. The surface integrity and machining accuracy of the machined workpiece have stronger cooling performance and excellent tribological characteristics, and the surface can realize low-carbon green and clean production with high efficiency, low consumption, environmental friendliness and resource saving.

Description

technical field [0001] The invention relates to a grinding medium supply system in the field of refrigeration and mechanical processing, in particular to an expander-driven refrigeration low-temperature cooling nano-particle jet micro-quantity lubrication supply system. Background technique [0002] Nano particle jet micro-lubrication grinding process is a kind of grinding process technology which is green, environment-friendly, clean and energy-saving. Based on the enhanced heat transfer theory that the heat transfer capacity of solid is greater than that of liquid, and the heat transfer capacity of liquid is greater than that of gas, a certain amount of nano-scale solid particles are added to degradable trace lubricating oil to generate nano-fluid, and the nano-fluid is atomized by high-pressure air , and sent into the grinding area in the form of a jet. The high-pressure air mainly plays the role of cooling, chip removal and conveying fluid; the micro-quantity lubricatin...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the micro-lubrication device and the low-temperature gas generating device of the micro-quantity lubrication system are only assembled on a certain basis, and no in-depth improvement has been made from the refrigeration principle and structure.

Moreover, in the prior art, most of the minimum quantity lubrication pumps use pneumatic pumps, and the pneumatic pump needs to be controlled by a gas frequency generator, the frequency provided is limited, and the output power of the pneumatic pump is small. When nanoparticles are added to the lubricating fluid, it will cause The viscosity of the lubricating fluid increases, the fluidity becomes poor, and the pneumatic pump fails to work due to insufficient air supply power

Cryogenic gas generators require a huge amount of compressed air consumption, and in production practice, air compressors not only drive large machine tools such as grinders, but also drive multiple low-temperature gas generators and multiple pneumatic pumps, further increasing the air pressure. Compressor operating burden

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