Purifying process and device for welding fume

A welding fume purification and welding torch technology, applied in the direction of removing fume, auxiliary devices, combined devices, etc., can solve the problem that the dust removal method is not suitable for electric welding fume control, etc., and achieves the effect of small footprint, simple process flow, and simple operation.

Active Publication Date: 2013-01-23
ZHONGBEI UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing commonly used dust removal methods are not suitable for electric welding fume control, the present invention provides a welding fume purification process and device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Purifying process and device for welding fume
  • Purifying process and device for welding fume

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Purify the smoke and dust generated by the T422 titanium calcium type low carbon steel electrode, and the content of the substances contained in the test welding smoke is MnO 2 The content is 0.63mg / m 3 , TiO 2 The content is 0.2mg / m 3 , the dust content is 8.35 mg / m 3 The average particle size of soot is 0.3μm. In the process of production, ten sets of welding fumes are purified. Ten sets of gas collecting hoods are connected in parallel, and the gas collecting hood is connected directly above the welding torch. The test uses water as the absorbent. The size ratio of the air collecting hood is: the distance d from the dust source to the hood mouth = 1 / 2 the diameter D of the annular part; the skirt height of the annular part L = 1 / 2 the diameter D of the annular part; the angle α= 60°.

[0036] First open the induced draft fan, adjust the valve to make the gas collecting hood collect gas speed of 1.0m / s, the gas pipeline gas speed to be 15m / s, and the total gas flo...

Embodiment 2

[0038] Purify the smoke and dust generated by the J44 type electric welding rod, and the content of the substances contained in the test welding smoke is Fe. 2 O 3 The content is 8.3mg / m 3 , CaO content is 3.2mg / m 3 , the dust content is 6.35 mg / m 3 The average particle size of soot is 0.4μm. During the production process, five sets of fumes generated by electric welding are purified. The five sets of gas collecting hoods are connected in parallel, and the gas collecting hood is connected to the side of the welding torch. The test uses water as the absorbent. The size ratio of the gas collecting hood is: the distance between the dust source and the hood mouth d=2 the diameter D of the annular part; the height of the skirt of the annular part L=1 / 4 the diameter D of the annular part; the angle between the truncated part and the annular part α=30° .

[0039] By adjusting the valve, the gas velocity of the gas collecting hood is 0.3m / s, the gas velocity of the gas pipeline is...

Embodiment 3

[0041] Purify the smoke and dust produced by the 507 type electric welding rod, and the content of the substances contained in the test welding smoke is Fe. 2 O 3 The production rate is 83 mg / min, SiO 2 The content is 22mg / min, CaF 2 30mg / min, the average particle size of soot is 0.35μm, the soot produced by 3 sets of electric welding is purified in the process production, the 3 sets of gas collecting hoods are connected in parallel, the gas collecting hood is connected to the side of the welding torch, and the test uses water as the absorbent. The size ratio of the gas collecting hood is: the distance d from the dust source to the hood mouth = the diameter D of the annular part; the height of the skirt of the annular part L=1 / 3 the diameter D of the annular part; the angle α between the truncated part and the annular part is 45°.

[0042] By adjusting the valve, the gas velocity of the gas hood is 2.5m / s, the gas velocity of the gas pipeline is 25m / s, and the total gas flow...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Outer diameteraaaaaaaaaa
Heightaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of a welding accessory device, specifically a purifying process and a device for welding fume. The purifying process and the device solve a problem that the conventional dust removing method is not suitable for processing electric welding fume. The device comprises a plurality of parallel gas collecting hoods which are integrated with a welding gun, wherein the gas collecting hoods are connected with a rotary filler bed; the gas collecting hoods are of umbrella-shaped structures; an upper part, a lower part or a side part of the welding gun is provided with a connecting mechanism which is connected with the gas collecting hoods. According to the process, a gas speed inside the gas collecting hoods is 0.3-2.5m / s, the gas speed inside pipelines of the gas collecting hoods is 10-25 m / s, absorption liquid is water, and a gas liquid ratio of dust-containing gas and the adsorption liquid is 200-2000 m<3> / m<3>. The purifying process and the device have the beneficial effects of being simple in process flow, higher than 99% in dust removing rate, convenient to carry, small in floor area, low in operating cost, small in energy consumption, convenient to move and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of welding accessory devices, and in particular relates to a welding fume purification process and device. Background technique [0002] In the modern industrial field, the welding of metal materials is one of the most basic structural parts processing procedures. However, with the rapid development of welding technology, the harm caused by welding fumes to the environment and welders has not yet attracted enough attention. During the welding process, a large amount of welding fumes are generated, which pollutes the working environment. In the case of poor ventilation, the concentration of soot usually exceeds the national standard several times, which can cause welding workers to pneumoconiosis, manganese poisoning, respiratory tract inflammation, neurasthenia and other occupations. harm. Therefore, the control of welding fume and dust has become a top priority in the current occupational health and envir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D50/00B08B15/04B23K37/00
Inventor 焦纬洲刘有智祁贵生袁志国栗秀萍申红艳刘文丽
Owner ZHONGBEI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap