Filtering film processed through laser and laser processing system

Abstract

The invention discloses a filtering film processed through a laser. The filtering film processed through the laser can be used for filtering contamination particles with the dimensions being from hundreds of nanometers to hundreds of micrometers. The filtering film processed through the laser is wide in application range, and effects are better when the hole diameter of the filtering film processed through the laser is smaller than the diameter of the contamination particles. The invention further discloses a laser processing system used for processing the filtering film. The laser processing system comprises a laser device, a beam expanding device, a diffraction optical element, a galvanometer unit, a lens, a carrying mechanism and a corresponding control unit, wherein the laser device, the beam expanding device, the diffraction optical element, the galvanometer unit, the lens, the carrying mechanism and the corresponding control unit are sequentially arranged. Through selection of laser processing parameters, by the adoption of a galvanometer and the carrying mechanism for assistance, an micro-hole array with the hole diameter being from hundreds of nanometers to hundreds of micrometers can be manufactured on the filtering film made of a selected material. The laser processing system can be used for processing the filtering film (net) and is high in work efficiency, low in production cost and free of tool consumption, and the processed filtering film is large in micro-hole density and has a good filtering effect.

Description

technical field

[0001] The invention belongs to the field of environmental protection, and relates to a filter film or filter net processed by laser and a laser processing system for processing the filter film or filter net. Background technique

[0002] In recent years, global air pollution and water pollution have become more and more serious. In order to alleviate the adverse effects of gas or liquid pollutants on people, filtration technology has been valued and developed by researchers and environmental protection enterprises. Among them, microfiltration technology and products, especially energy The demand for filter membranes (nets) for filtering micron to nanoscale pollutants is increasing. Microfiltration specifically refers to the method of intercepting particles, bacteria and other pollutants from the gas phase and liquid phase suspension, which is mainly realized by membrane separation technology. Particle or particle aggregate interception can be widely used in...

Examples

Embodiment 1

[0024] This embodiment provides a filter membrane processed by laser, on which a micropore array for filtering microparticles of different particle sizes is distributed, and in the micropore array, the diameter of the micropore is 0.1 μm-1 mm, It is preferably 2-500 μm. According to different requirements, the micropores can be laser-processed into different apertures. In this embodiment, the aperture of the micropores is preferably not greater than 2.5 μm, which is suitable for filtering PM2.5 and other micro particles. Its filtering effect is good, and it does not need to be stacked in multiple layers when used. The material of the filter membrane can be metal or non-metal material, wherein the metal material can be selected as conventional materials such as stainless steel or aluminum, and the non-metal material can be selected from plastic. Choose from different thicknesses. As an alternative embodiment, the filter membrane can also be a filter screen with different apert...

Embodiment 2

[0026] The present embodiment provides a kind of laser processing system for processing described filter membrane (net), it is as figure 1 As shown, it includes a laser 1 arranged in sequence along the laser optical path, a beam expander 2 for changing the diameter of the laser beam, a diffractive optical element (DOE) 7, a galvanometer unit 3 for deflecting the laser beam, and a laser beam for focusing The lens 4 and the object-carrying mechanism 5 of the beam, the object-carrying plane of the object-carrying mechanism 5 faces the light-emitting surface of the lens 4, and also includes a control device electrically connected with the laser 1, the vibrating mirror unit 3 and the object-carrying mechanism 4 Unit 6. The diffractive optical element 7 is arranged between the beam expander 2 and the vibrating mirror unit 3, and plays the role of diffracting the laser beam into multiple parallel beams, and can simultaneously form multiple micropores on the filter film or directly fo...

technical field

[0001] The invention belongs to the field of environmental protection, and relates to a filter film or filter net processed by laser and a laser processing system for processing the filter film or filter net. Background technique

[0002] In recent years, global air pollution and water pollution have become more and more serious. In order to alleviate the adverse effects of gas or liquid pollutants on people, filtration technology has been valued and developed by researchers and environmental protection enterprises. Among them, microfiltration technology and products, especially energy The demand for filter membranes (nets) for filtering micron to nanoscale pollutants is increasing. Microfiltration specifically refers to the method of intercepting particles, bacteria and other pollutants from the gas phase and liquid phase suspension, which is mainly realized by membrane separation technology. Particle or particle aggregate interception can be widely used in...

Examples

Embodiment 1

[0024] This embodiment provides a filter membrane processed by laser, on which a micropore array for filtering microparticles of different particle sizes is distributed, and in the micropore array, the diameter of the micropore is 0.1 μm-1 mm, It is preferably 2-500 μm. According to different requirements, the micropores can be laser-processed into different apertures. In this embodiment, the aperture of the micropores is preferably not greater than 2.5 μm, which is suitable for filtering PM2.5 and other micro particles. Its filtering effect is good, and it does not need to be stacked in multiple layers when used. The material of the filter membrane can be metal or non-metal material, wherein the metal material can be selected as conventional materials such as stainless steel or aluminum, and the non-metal material can be selected from plastic. Choose from different thicknesses. As an alternative embodiment, the filter membrane can also be a filter screen with different apert...

Embodiment 2

[0026] The present embodiment provides a kind of laser processing system for processing described filter membrane (net), it is as figure 1 As shown, it includes a laser 1 arranged in sequence along the laser optical path, a beam expander 2 for changing the diameter of the laser beam, a diffractive optical element (DOE) 7, a galvanometer unit 3 for deflecting the laser beam, and a laser beam for focusing The lens 4 and the object-carrying mechanism 5 of the beam, the object-carrying plane of the object-carrying mechanism 5 faces the light-emitting surface of the lens 4, and also includes a control device electrically connected with the laser 1, the vibrating mirror unit 3 and the object-carrying mechanism 4 Unit 6. The diffractive optical element 7 is arranged between the beam expander 2 and the vibrating mirror unit 3, and plays the role of diffracting the laser beam into multiple parallel beams, and can simultaneously form multiple micropores on the filter film or directly fo...

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