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Purifying 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, low energy consumption, and easy movement.

Active Publication Date: 2014-04-30
ZHONGBEI UNIV
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  • 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

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  • Purifying device for welding fume

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Purify the smoke and dust produced by T422 titanium-calcium type low-carbon steel welding rod, and test the contents of the substances contained in the welding smoke to be MnO 2 The content is 0.63mg / m 3 、TiO 2 The content is 0.2mg / m 3 , Dust content is 8.35 mg / m 3 1. The average particle size of smoke and dust is 0.3μm. During the production process, the smoke and dust generated by ten welding machines are purified. Ten sets of gas collecting hoods are connected in parallel, and the gas collecting hoods are connected directly above the welding torch. Water is used as the absorbent in the test. The size ratio of the gas collecting hood is: the distance from the dust source to the hood mouth d=1 / 2 the diameter D of the ring part; the height of the skirt of the ring part L=1 / 2 the diameter D of the ring part; 60°.

[0036] First turn on the induced draft fan, adjust the valve so that the gas collection hood speed is 1.0m / s, the gas pipeline gas speed is 15m / s, and the...

Embodiment 2

[0038] Purify the fumes produced by J44 welding rods, and test the contents of the substances contained in the welding fumes to be Fe 2 o 3 The content is 8.3mg / m 3 , CaO content is 3.2mg / m 3 , Dust content is 6.35 mg / m 3 , The average particle size of smoke and dust is 0.4μm. During the production process, the smoke and dust generated by five electric welding machines are purified. The five gas collecting hoods are connected in parallel, and the gas collecting hoods are connected to the side of the welding torch. Water is used as the absorbent in the test. The size ratio of the gas collecting hood is: the distance from the dust source to the hood mouth d=2 the diameter D of the ring part; the height of the skirt of the ring part L=1 / 4 the diameter D of the ring part; the angle α between the table part and the ring part=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 10m / s, and the total ...

Embodiment 3

[0041] Purify the smoke and dust produced by the 507-type welding rod, and test the content of the substances contained in the welding smoke to be Fe 2 o 3 The production rate is 83mg / min, SiO 2 The content is 22mg / min, CaF 2 30mg / min, the average particle size of the dust is 0.35μm. During the production process, the smoke generated by 3 welding machines is purified. The 3 gas collecting hoods are connected in parallel, and the gas collecting hood is connected to the side of the welding torch. Water is used as the absorbent in the test. The size ratio of the gas collecting hood is: the distance between the dust source and the hood mouth d=the diameter D of the ring part; the height of the skirt of the ring part L=1 / 3 the diameter D of the ring part; the angle α between the table-shaped part and the ring part=45°.

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

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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 attachments, and in particular relates to a welding fume purification process and device. Background technique [0002] In the field of modern industry, 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 of welding fume to the environment and welders has not yet attracted enough attention. During the welding process, a large amount of welding fume is produced, which pollutes the working environment. In the case of poor ventilation, the concentration of smoke and dust usually exceeds the national standard by several times, which can cause various occupations such as welder pneumoconiosis, manganese poisoning, respiratory inflammation, and neurasthenia. harm. Therefore, the treatment of electric welding fumes has become an urgent task in the current occupational health and environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00B08B15/04B23K37/00
Inventor 祁贵生焦纬洲刘有智袁志国栗秀萍申红艳刘文丽
Owner ZHONGBEI UNIV
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