CN2172688Y

CN2172688Y - Welding smoke purifying device

Info

Publication number: CN2172688Y
Application number: CN 93221277
Authority: CN
Inventors: 吴雳鸣; 周长友
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-13
Filing date: 1993-08-13
Publication date: 1994-07-27
Anticipated expiration: 2003-08-13

Abstract

The utility model relates to a welding smoke purifying device used for purifying smoke dust generated in a large-scale welding shop. A smoke sucking cover is firstly fixed on a torch head in the welding smoke purifying device; the smoke dust enters the corona accumulation region of the welding smoke purifying device through the smoke sucking cover, a light hose and a smoke sucking pipe; corona charge is carried out through a barrel type high pressure coagulator and a metal disc coagulator rotating at high speed to make the micro smoke dust accumulated and charged for dust collection, and then the purified air is exhausted out of the welding smoke purifying device through filtration; an automatic cleaning mechanism is arranged in a secondary accumulation region, and a filter bag group is provided with brushes which automatically rotate for brushing. The welding smoke purifying device can inhale 99.9% of the smoke dust, and the air purifying rate can achieve more than 95%. One welding smoke purifying device can simultaneously process welding smoke produced by 10-15 electric welders.

Description

Welding smoke purifying device

The utility model relates to a kind of strengthen environmental protection, improves the dedusting and purifying device of welder's operating condition.Be mainly used in the weldering fume purifying apparatus of the flue dust that purifies large-scale welding shop welding generation.

In fields such as boiler manufacturing, heavy-duty machinery, vehicle manufacturing, the manufacturing of shipbuilding generating set, all have large-scale welding shop.In these workshops, tens of, up to a hundred electric welding machines or several large-scale automatic welding devices are generally all arranged, when these welding machines were worked simultaneously, flue gas manganese dust content was generally up to 30mg/m in the workshop ³More than, also contain other metallic vapour, seriously polluting air, the harm welding personnel and around personnel healthy.Present domestic butt welding cigarette purifies great majority and adopts the industrial filter cloth filtration method, wet method and active carbon adsorption, and this several method all has the shortcoming that can't overcome.Exempt to press and weld the contradiction of flue dust grain between small as the density in industrial filter cloth wind hole and air quantity and suction; In wet-treating, exist when handling volume of smoke, with the contradiction that chemicals is frequently changed and chemical tank moves; Charcoal absorption needs long activation process again.These contradictions all can't overcome, and add present range hood great majority and adopt fixedly, and this is concerning the weldering cigarette that the welding gun that moves produces, and uptake is few, and a large amount of weldering cigarettes are diffused in the air.It is that range hood is fixed on the mask that the welder uses that a kind of device is arranged, though this method has solved range hood and has moved problem, but general mask is all beyond the fluerics of weldering cigarette, so, the range hood that is positioned on the mask can not be with in the whole inhalation machines of weldering cigarette, pipeline is bigger in addition, so to very inconvenience of workman's operation.

It is the principle that corona effect makes small soot dust granule cohesion control of dust that the purpose of this utility model is exactly the applying high voltage cohesion charged, designs a kind of all kinds of equipment that carry out the workshop smoking dedusting of weld job of large, medium and small type that are applicable to---the weldering fume purifying apparatus.This function is followed the tracks of absorption to the flue dust that welding gun produces to any one in the workshop, and cleaned air passes is entered indoor.

Weldering fume purifying apparatus described in the utility model is to be made of range hood, Smoking pipe, corona flue dust condensation region, the several parts in filtrating smoke dust district.It is that range hood is installed in above the rifle head of welding gun, range hood and welding gun are become one, during work, range hood moves with welding gun and moves, in the weldering cigarette inhalation mask that can in time welding gun be produced, dust shield links to each other with the multichannel plug of Smoking pipe one end by universal heatproof lightweight flexible pipe like this, and the weldering cigarette is by multichannel plug process Smoking pipe, under the suction function that blower fan produces, be inhaled in the weldering fume purifying apparatus.After the weldering cigarette process mesh homogenizer homogenizing, import the tubular knockouts, under the effect of high voltage electric field, tentatively condense, the small charged bigger particle (being corona effect) that becomes of the preliminary cohesion of soot dust granule process by smoke guiding cover.Flue dust through preliminary cohesion is imported into the secondary high-pressure condensation region again, under the effect of high pressure and negative pressure, flue dust is gathered into larger particle, under the centrifugal action of rotation at a high speed, be projected to filtering area again, air is cleaned by the filter bag group and gets back to indoorly under the effect of blower fan, and flue dust is blocked and has stayed in the weldering fume purifying apparatus.

This device range hood and welding gun are molten to be one, when welding personnel is worked, the lonely together light of welding gun produces flue dust immediately, range hood will weld cigarette effectively and all suck and weld in the fume purifying apparatus this moment, because this range hood is on welding gun, can move and move with welding gun, therefore butt welding cigarette absorptivity can reach 99.9%, this range hood adopts aluminium sheet to make, Smoking pipe adopts the lightweight flexible pipe, so the workman is easy to operate, does not increase the weight of welding gun again too much, through the test of environmental administration's manganese electric test method, the purification efficiency of native system machine reaches more than 95%.A weldering fume purifying apparatus can be handled 10～15 weldering cigarettes that electric welding machine produced simultaneously.

Embodiment:

With reference to the accompanying drawings the structure of weldering fume purifying apparatus described in the utility model is carried out detailed narration below.

Fig. 1. weldering fume purifying apparatus condensation region structural representation.

Fig. 2. weldering fume purifying apparatus filtering area structural representation.

Fig. 3. weldering fume purifying apparatus wiring schematic diagram.

Wherein:

1. arc welding gun head 2. range hoods 3. lightweight flexible pipes 4. multichannel plugs 5. Smoking pipes 6. air outlets 7. homogenizers 8. smoke guiding covers 9. vibrators 10. tubular knockouts 11. corona discharge electrode electric rotating machines 12. poly-petticoat pipe 13. logical dirt mouth 14. dust collecting electrode electric rotating machines 15. collecting polar plates 16. corona pole plates 17. pole plates cleaning motor 18. cleaning scrubbing brushes 19. high-tension transformers 20. attaching plugs 21. blower fans 22. switch panels 23. filter bags are cleaned full sensor 29. filter bag groups 30. filtering areas of motor 24. driving chains 25. control of dust drawers 26. cleaning brush axles 27. filter bags brush 28. ashes with water

Smoking pipe (5) is that two ends are the hollow pipe of tubaeform knot mouth, can be stationary pipes, also can be for ease of the flexible pipe of activity, end outside casing (31) is a multichannel plug (4), by a lightweight flexible pipe (3) that range hood (2) is coupled, range hood is made the structure that can cover on above the arc welding gun head (1).The other end of Smoking pipe stretches into housing and smoke guiding cover (8) joins, in smoke guiding cover, establish a mesh homogenizer (7), the smoke guiding cover below joins with tubular knockouts (10), the tubular knockouts is by a metallic cylinder, put one or several corona wire composition at the center, be connected with high-tension transformer (19) by lead.Outside the tubular knockouts, adorn two vibrators (9).The secondary aggregation district is positioned at the below of tubular knockouts, the top of this condensation region is by regularly arranged star-like sparking electrode above two, the corona pole plate (16) that places the rosette in the poly-petticoat pipe to constitute, two corona discharge electrode electric rotating machine M1(11) form, the corona pole plate is connected with the negative pole of high-tension transformer.Control of dust pole plate (15) and two high speed dust collecting electrode electric rotating machine M2(14 that the rosette formation of two correspondences is arranged respectively below two corona pole plates), the control of dust pole plate is connected with the positive pole of high-tension transformer and ground connection.The condensation region is communicated with filtering area by the logical dirt mouth (13) on the dividing plate.Between two dust collecting electrode electric rotating machine M2, put a cleaning motor M 3(17), motor links to each other with cleaning scrubbing brush (18) handle, and brush contacts with collecting plate.Air outlet above filtering area (6) is disposed a typhoon machine M0(21), the centre is separated by filter bag group (29), a cleaning brush axle (26) passes the filter bag group and is fixed on the casing, cleans motor M 4(23 by chain (24) with strainer by the gear on the cleaning brush axle) link to each other.Several filter bags brushes (27) are contained on the cleaning brush axle, put a control of dust drawer (25) in the bottom of casing,, link to each other with indicator lamp on the switch panel (22) by a dust-full sensor (28) in the bottom of drawer.This device power supply adopts the power source of 380V, 50HZ, and wherein supplying with the power supply of high-tension transformer and the power supply of cleaning motor M 3 is 220V, 50HZ, and all power supplys are connected by attaching plug (20).

Claims

A kind of by range hood, Smoking pipe, the cohesion of corona flue dust, the weldering fume purifying apparatus that several parts of filtrating smoke dust constitute is characterized in that:

(1) range hood is contained on the arc welding gun head, is connected with Smoking pipe by the lightweight flexible pipe, and Smoking pipe links to each other with the condensation region;

(2) corona flue dust condensation regions are to connect high-tension electricity and constitute by put tubular knockouts that one or more corona wire constitutes in a metallic cylinder, and drum outer wall is equipped with vibrator;

(3) secondary corona flue dust condensation region is the corona pole plate that the rosette by the star-like sparking electrode of arranging regularly on it constitutes, the control of dust pole plate that is made of rosette links to each other with the both positive and negative polarity of high-tension electricity respectively and constitutes, and the corona pole plate is connected with high-speed electric expreess locomotive respectively with the control of dust pole plate;

(4) brushing machine of control of dust pole plate be by motor and brush on the control of dust pole plate, the cleaning scrubbing brush that handle links to each other with motor constitutes;

(5) filtering area is by the filter bag group with pass the filter bag group, and coaxial test-tube brush and the motor that is linked to each other by driving chain constitute, and the bottom is provided with control of dust drawer and the full sensor of ash.