Oil mist recovery, separation and purification device for minimum quantity lubricant grinding process

Patent metadata

Field	Value
Publication number	US-11898699-B2
Application number	US-202017279491-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Jan 31, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

An oil mist recovery, separation and purification device for a minimum quantity lubricant (MQL) grinding process, including: a pneumatic separation mechanism, a pipeline and a fan fixedly connected with one end of the pipeline, wherein the fan is configured to form a negative pressure in the pipeline, one cone-shaped filter mesh mechanism is disposed in the pipeline, and a tip of the cone-shaped filter mesh mechanism faces the side of an air inlet direction of the pipeline; and a filtering and recovery mechanism connected with the pipeline and including a case body, a filtering mechanism and a recovery mechanism, wherein the case body is connected with the pipeline through a connecting part, and the filtering mechanism is connected with the recovery mechanism. The device can separate, recover and reuse oil mist particles in the air.

First claim

What is claimed is:

1. An oil mist recovery, separation and purification device for a minimum quantity lubricant (MQL) grinding process, the device comprising:
a pneumatic separation mechanism, configured to separate oil mist and particles in air and comprising a pipeline and a fan fixedly connected with one end of the pipeline, wherein the fan is configured to form a negative pressure in the pipeline, at least one cone-shaped filter mesh mechanism is disposed in the pipeline, a tip of the cone-shaped filter mesh mechanism faces a side of an air inlet direction of the pipeline, and the cone-shaped filter mesh mechanism is configured to separate the oil mist and particles in air; and
a filtering and recovery mechanism, connected with the pipeline, configured to filter and recover the oil mist separated by the pneumatic separation mechanism, and comprising a case body, a filtering mechanism and a recovery mechanism, wherein the case body is connected with the pipeline through a connecting part, the filtering mechanism is configured to filter separated oil mist, the filtering mechanism is connected with the recovery mechanism, and the recovery mechanism is configured to recover oil filtered by the filtering mechanism.

2. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 1 , wherein the pipeline is an L-shaped pipeline and comprises a horizontal part and a vertical part, the horizontal part is configured to be connected with the filtering and recovery mechanism through the connecting part, and an end of the vertical part is connected with the fan.

3. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 1 , wherein the cone-shaped filter mesh mechanism comprises a mounting ring, the mounting ring is fixed with a cone-shaped filter mesh, a plurality of mounting grooves are formed in the mounting ring, and the mounting ring is clamped and fixedly connected by the mounting grooves and clamping blocks disposed on an inner surface of the pipeline.

4. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 1 , wherein the pipeline is connected with pressure detection devices configured to detect an air pressure in the pipeline.

5. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 1 , wherein the filtering mechanism comprises an electromagnetic plate, filter paper and an oil box, the electromagnetic plate is disposed inside the connecting part and is configured to adsorb metal grinding particles, the filter paper is disposed inside the case body and is configured to filter the oil mist passing through the electromagnetic plate, the oil box is configured to collect the oil filtered by the filter paper, the oil box is connected with the recovery mechanism, and the oil is recovered and reused through the recovery mechanism.

6. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 1 , wherein one end of filter paper is wound on a filter paper tube rotationally connected with a case wall of the case body, the filter paper tube is configured to wind an unused part of the filter paper, the other end of the filter paper is configured to be connected with a filter paper storage device, and the filter paper storage device is configured to store a used part of the filter paper.

7. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 6 , wherein rollers are further disposed in the case body, and the rollers are configured to tension a filter paper part between the filter paper tube and the filter paper storage device.

8. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 6 , wherein an upper part of an oil box is connected with a mesh frame, and the mesh frame is configured to support a filter paper part above the oil box.

9. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 6 , wherein the filter paper storage device comprises a storage tube, the storage tube is connected with a driving mechanism, the driving mechanism is configured to drive the rotation of the storage tube, a rolling tube is disposed inside the storage tube, an end of one side of the rolling tube is rotationally connected with an end of a same side of the storage tube, an axis of the rolling tube and an axis of the storage tube are not located on the same straight line, a paper inlet parallel to the axis of the storage tube is formed in a tube wall of the storage tube, the paper inlet is located at a position of the minimum distance between cylindrical surfaces of an inner tube surface of the storage tube and an outer tube surface of the rolling tube, a gap is formed in a tube wall of the rolling tube, an end of the filter paper is capable of extending into the inside of the rolling tube through the paper inlet and the gap, and the minimum distance between the cylindrical surfaces of the inner tube surface of the storage tube and the outer tube surface of the rolling tube meets the requirement that the inner tube surface of the storage tube is capable of compressing the filter paper together with the outer tube surface of the rolling tube.

10. The oil mist recovery, separation and purification device for an MQL grinding process according to claim 5 , wherein the recovery mechanism comprises an oil cup fixed on the outside of the case body, the oil cup is connected with one end of an oil pipe, and the other end of the oil pipe extends into the inside of the case body and is connected with the oil box.

Assignees

• Univ Qingdao Technology
• Shanghai Jinzhao Energy Saving Tech Co Ltd

Inventors

• Li Changhe
• Duan Zhenjing
• Cao Huajun
• Xu Xuefeng
• Zhang Naiqing
• Dong Lan
• Zhang Yanbin
• Bai Xiufang
• Wu Wentao
• Gao Teng
• Yang Min
• Jia dongzhou
• Li Runze
• Hou Yali

Classifications

• F16N7/32 Primary

  Mist lubrication (splash lubrication F16N7/26) · CPC title

• B23Q11/1046 Primary

  using a minimal quantity of lubricant (spraying apparatus using a carrying fluid B05B7/00) · CPC title

• B23Q11/1069

  Filtration systems specially adapted for cutting liquids (filtration in general B01D24/00 - B01D41/00) · CPC title

• B24B55/12

  Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like · CPC title

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title