CN103212807A

CN103212807A - Residue recovery method used in laser machining process of medical stents

Info

Publication number: CN103212807A
Application number: CN2012100158463A
Authority: CN
Inventors: 魏志凌; 宁军; 夏发平; 马秀云
Original assignee: Kunshan Theta Micro Co Ltd
Current assignee: Kunshan Theta Micro Co Ltd
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2013-07-24
Anticipated expiration: 2032-01-19
Also published as: CN103212807B

Abstract

The invention discloses a residue recovery method used in a laser machining process of medical stents. The residue recovery method comprises the steps that smoke, water mist and metal steam which are produced in the machining process are absorbed by utilizing a dust absorption device, and after the smoke, the water mist and the metal steam are cooled, first solid residues and a cooling water flow are obtained; the cooling water flow and other wastewater produced in the machining process are conveyed into a sediment box through a water collector pipe to be primarily filtered, and second solid residues and primary purified liquid are obtained; the primary purified liquid is secondarily filtered in a vortex type separator, and third solid residues are obtained; the first, second and third solid residues are assembled in a residue collector and are flushed for multiple times by utilizing pure water; through using a magnetic separator, flushing liquid containing the residues is separated to obtain magnetic solid particles, and the particles are recovered; and the separated flushing liquid is input into the vortex type separator to be filtered, and non-magnetic solid particles are obtained and are recovered.

Description

A kind of residue recovery method that is used for medical support laser processing procedure

Technical field

The present invention relates to the laser micro-machining technology field, be specifically related to the separation and recovery method of discarded object in a kind of medical support laser processing procedure.

Background technology

Support is a kind of metal net shaped structure that is implanted to the vascular lesion position, in order to blocking or narrow position mediation, to improve the blood flow state of diseased region, blood vessel is played the effect of support.Laser Processing at present is the main machining method of medical support, and it is to be moved at tubing upper edge line of cut by overlapped laser pulse point, imports the auxiliary fusing cutting of hyperbaric oxygen simultaneously.Laser focal spot material fusion and gasification, slag is blown out by gas, forms cutting track on metal pipe-wall.

Present most support tubing relies on external import, and price is extremely expensive.In laser processing procedure, the melt metal particle of being taken away by the high pressure assist gas comprises a large amount of non-ferrous metals and rare precious metals.Because rare precious metals have become the important materials of modern industry and national defense construction, its reserves are limited, produce difficulty, output is not high, price rises steadily, and therefore cut or the wet slag that produces in the process of cutting filters, separates, reclaims and just seem and be even more important dried.

Summary of the invention

The present invention solves the sewage that produces in the medical support process of Laser Processing and separates technical problems such as recovery with solid residue.

For solving the problems of the technologies described above, the invention discloses a kind of residue recovery method that is used for medical support laser processing procedure.This method may further comprise the steps: utilize dust exhaust apparatus to absorb flue dust, water smoke and the metallic vapour that produces in the process, obtain first solid residue and cooling water flow after supercooling; Other sewage that produces in described cooling water flow and the process is transported to by collector pipe carries out primary filter in the settling tank, obtain second solid residue and primary purifying liquid; In the vortex separator, primary purifying liquid is carried out secondary filter, obtain the 3rd solid residue; First, second and the 3rd solid residue are pooled in the residue gatherer, and residue are repeatedly washed with pure water; Make the flushing liquor that contains residue by magnetic separator, isolate magnetic retention particle and recovery; And filter in the input of the flushing liquor after will the separating vortex separator, obtain non magnetic solid particle and recovery.

In the present invention,, can reduce the loss of rare precious metals and non-ferrous metal, and the sewage of discharging is fully filtered, be beneficial to energy-conserving and environment-protective by the sewage that produces in the medical support laser processing procedure is separated recovery with solid residue.

Description of drawings

Fig. 1 is the flow chart of residue separation and recovery method according to an embodiment of the invention.

The specific embodiment

Each preferred embodiment of the present invention below will be discussed.But it will be appreciated by those skilled in the art that herein detailed description not as limiting the scope of the invention, the present invention also can be achieved by modification or other equivalent way of following each embodiment.

The support processing technology has dried the cutting with laser is wet of laser to cut two kinds of technologies.In one embodiment of the invention, adopt dust exhaust apparatus to absorb flue dust, water smoke and the metallic vapour that produces in the process, be recovered in the dust deposited case of dust exhaust apparatus, the current of gained are pooled in the collector pipe after supercooling.In addition, add man-hour carrying out wet the cutting of laser, by water distributor pure water is imported to the cut point secondary process, the sewage that produces in the process also is pooled in the collector pipe.As example, separating and reclaiming device of the present invention can comprise filtering module, separation module and oven dry recycling module.

Fig. 1 illustrates residue separation and recovery method flow chart according to an embodiment of the invention.As shown in Figure 1, the flue dust, water smoke and the metallic vapour that are recovered in the dust deposited case obtain solid residue and cooling water flow after supercooling, and wherein the cooling water flow with gained is pooled in the collector pipe.Sewage in the collector pipe carries out primary filter in settling tank.Solid residue after the filtration is deposited at the bottom of the case, and scavenging solution can be transported in the vortex separator.In one example, can in settling tank, be provided with the dividing plate that excludes solid residue, and settling tank is separated into settlement of sewage part and primary filter scavenging solution storage compartment by dividing plate.Dividing plate makes the solid residue in the sewage be deposited in the bottom of settlement of sewage part, and flows to primary filter scavenging solution storage compartment through the primary filter scavenging solution of post precipitation by the dividing plate top.In addition, can scraper plate be installed, be used for regularly collecting and mouthful scraping outlet and drop into the residue gatherer outward by residue with being deposited in solid residue at the bottom of the case in the bottom of the settlement of sewage of settling tank part.Residue is collected mouth and is only opened when collecting residue, is in closed condition At All Other Times, for example blocks with plug.

Primary purifying liquid in the settling tank is pressed in the vortex separator by water pump, and the centrifugal force that produces by rotating at a high speed impels the smalls residue to throw to wall week, then falls by the bottom along inwall and flows out.The cone center forms low-pressure area owing to rotating at a high speed, impels scavenging solution to rise, and extrudes by the scavenging solution outlet.More specifically, at first enter the cylindrical section feed liquor district of vortex separator from the primary purifying liquid of settling tank, enter the conical section Disengagement zone then, wherein in the conical section Disengagement zone, solid residue in the primary purifying liquid falls and flows out from the bottom along inwall, then extrudes by the scavenging solution outlet through the scavenging solution of secondary filter.

The solid residue of residue that the solid residue in the dust deposited case, the elementary precipitation of settling tank are obtained and vortex separator bottom is pooled in the residue gatherer.Add pure water the residue in the residue gatherer is carried out repeatedly abundant flushing.In order to make the soluble metal loss in the sewage minimum, must before purify, fully wash, precipitate and clarify these solid residues.Because developing result strengthens, the soluble metal loss is reduced.

The flushing liquor that contains residue is separated by magnetic separator, thereby the solid particle of magnetic is separated.Oven dry after the isolated solid particle demagnetization is reclaimed.

Residue flushing liquor after separating is pressed into the vortex separator carries out secondary filter.The back recovery is then dried in purify waste water reusable edible or eliminating after the filtration, the solid residue that obtains.

Basically can be after the above method of process metal and nonmetal separating.

Claims

1. residue recovery method that is used for medical support laser processing procedure comprises:

Utilize dust exhaust apparatus to absorb flue dust, water smoke and the metallic vapour that produces in the process, after supercooling, obtain first solid residue and cooling water flow;

Other sewage that produces in described cooling water flow and the process is transported to by collector pipe carries out primary filter in the settling tank, obtain second solid residue and primary purifying liquid;

In the vortex separator, primary purifying liquid is carried out secondary filter, obtain the 3rd solid residue;

First, second and the 3rd solid residue are pooled in the residue gatherer, and residue are repeatedly washed with pure water;

Make the flushing liquor that contains residue by magnetic separator, isolate magnetic retention particle and recovery; And

Filter in the flushing liquor input vortex separator after will separating, obtain non magnetic solid particle and recovery.

2. residue recovery method as claimed in claim 1, it is characterized in that, the settlement of sewage that is introduced into settling tank from the sewage of collector pipe partly precipitates, make the solid residue in the sewage be deposited in the bottom of settlement of sewage part, and flow to the primary purifying liquid storage compartment of settling tank through the primary purifying liquid of post precipitation gained.

3. residue recovery method as claimed in claim 1 or 2, it is characterized in that, at first enter the cylindrical section feed liquor district of vortex separator from the primary purifying liquid of settling tank, enter the conical section Disengagement zone then, wherein in the conical section Disengagement zone, solid residue in the primary purifying liquid falls and flows out from the bottom along inwall, then extrudes by the scavenging solution outlet through the scavenging solution of secondary filter.

4. residue recovery method as claimed in claim 1 is characterized in that, oven dry after the demagnetization of described magnetic retention particle is reclaimed.

5. residue recovery method as claimed in claim 1 is characterized in that, described non magnetic solid particle oven dry back is reclaimed.