CN2672079Y

CN2672079Y - Fishbone type desulfurizing spray gun

Info

Publication number: CN2672079Y
Application number: CN 200320113475
Authority: CN
Inventors: 刘守宽; 郝溥; 朱传先; 李国富
Original assignee: JIAOZUO ZHENDE REFRACTORY CO Ltd
Current assignee: JIAOZUO ZHENDE REFRACTORY CO Ltd
Priority date: 2003-12-17
Filing date: 2003-12-17
Publication date: 2005-01-19
Anticipated expiration: 2013-12-17

Abstract

The utility model relates to a fishbone type desulfurizing spraying gun used for spraying magnesium granules into a molten iron tank and desulfurizing for the molten iron. The fishbone type desulfurizing spraying gun is characterized in that the outer of the spraying blast pipe of the spraying gun is provided with a protecting pipe; the upper ends of the spraying blast pipe and the protecting pipe are connected by a bolt; the lower end of the protecting pipe is connected with a support rib; a square casing pipe is arranged outside the protecting pipe; a support plate and a ribbed plate connected with a bulkhead are arranged on the casing pipe; equispaced inner ring ribs are arranged on the wall of the protecting pipe under the bulkhead; equispaced inner vertical ribs are arranged outside the inner ring ribs; equispaced outer ring ribs are arranged outside the inner vertical ribs; equispaced outer vertical ribs are arranged outside the outer ring ribs; the lower ends of the inner vertical ribs and the outer vertical ribs are connected with the support rib; fishbone type anchorage ribs whose directions are all upwards oblique by 45 degrees are uniformly arranged between the inner ring ribs and outer ring ribs; the ring ribs, the vertical ribs and the fishbone type ribs form a metallic network; fire resistive material is coated outside the network. Because the spraying gun adopts the fishbone type anchorage ribs, the stress status of the fire resistive material and the metalwork can be completely changed, which can effectively prevent fire resistive material from cracking and shedding and enhance the life time of the spraying gun.

Description

The fish bone like desulphurization spray gun

(1) technical field: the utility model relates to a kind of specific equipment of hot metal pretreatment, and specifically a kind of fish bone like desulphurization spray gun is used for winding-up magnesium grain in torpedo jar, iron ladle, and molten iron is carried out the desulfurization pre-treatment.

(2) background technology: at present; before in metallurgy industry, making steel; generally all to carry out the desulfurization pre-treatment to molten iron; used equipment is exactly desulphurization spray gun; state according to pretreated molten iron; design has the desulphurization spray gun of various different structures; these spray guns all are by metal rifle core; protection metal pipe and length anchoring piece are formed; hardware coated outside one deck refractory materials; spray gun uses as a whole; no matter how existing spray gun metal construction changes; its length anchoring piece all is to adopt " V " shape; " V " shape anchoring piece can not solve the physical difference of rifle core metal material and peripheral refractory materials effectively; the result causes the refractory materials cracking of desulphurization spray gun outside surface; perforation; problems such as head comes off, when particularly " V " shape part used under the state that colds and heat succeed each other, its " V " shape angle can change; these variations more can aggravate the cracking of refractory materials and come off, and cause spray gun low work-ing life.The desulphurization spray gun that present most Iron And Steel Company uses all is the structure technology that adopts " V " shape anchoring piece, and about 400 minutes of mean lifetime can not be satisfied the actual user demand of factory.

(3) summary of the invention: the purpose of this utility model is exactly a kind of fish bone like desulphurization spray gun of developing at the problems referred to above; it comprises the winding-up pipe; protective tube; anchoring piece and periphery are enclosed with refractory materials; its constructional feature is: winding-up tube outside suit protective tube; both connect by standing bolt the upper end; protective tube is terminal to be connected with supporting rib; there is square casing the protective tube outside; supporting plate and floor are arranged on the sleeve pipe; floor also is connected with plug; equally spaced interior ring muscle is arranged on the protective tube outer wall below the plug; there are 4 equally spaced interior perpendicular muscle interior ring muscle outside; there is equally spaced outer shroud muscle interior perpendicular muscle outside, and there are 4 equally spaced outer muscle that erect outer shroud muscle outside, in; the lower end of outer perpendicular muscle all is connected with supporting rib; in; be evenly equipped with the fish bone like anchor rib between the outer shroud muscle; its direction all is inclined upwardly, and with protective tube angle at 45, the ring muscle; perpendicular muscle; fish bone rib constitutes a metalolic network integral body; at metalolic network coated outside refractory materials, be similar to a cylinder.

The beneficial effects of the utility model are:

1, this product structure is reasonable, and is easy to make.

What 2, this product adopted is the fish bone like anchor rib, it can improve the consistency between metal winding-up pipe and the peripheral refractory materials, again because the fish bone like anchor rib can only be towards a fixed-direction variation in the process of using that colds and heat succeed each other, changed the force-bearing situation of refractory materials and metalwork fully, thereby alleviate the lance outer surface refractory materials cracking, burst apart and come off, make prolong 30-50% its duration of service than former spray gun.

3, the miscellaneous part of the winding-up pipe of this spray gun and spray gun is isolating basically, can alleviate the winding-up pipe so effectively in the process of winding-up magnesium grain, and the severe vibration that causes owing to air-flow velocity is excessive is directly passed to other parts of spray gun.

4, square casing is arranged at this spray gun top, is used for accurately adjusting direction, makes molten iron seethe violent part and is unlikely always and washes away in a certain fixed position of spray gun, makes the stressed relative equilibrium of refractory materials part on spray gun surface.

(4) description of drawings:

Fig. 1 is an overall structure synoptic diagram of the present utility model

Fig. 2 is an A-A sectional view of the present utility model

Fig. 3 is a B-B sectional view of the present utility model

(5) embodiment: the utility model is described in further detail below in conjunction with accompanying drawing.

Provided concrete structure of the present utility model among Fig. 1,2,3, the characteristics of this spray gun are, anchoring piece is a fish bone like, and it mainly is made up of fish bone like anchor rib and pipe component etc.1 outside suit protective tube 2 is managed in the winding-up of spray gun, and both connect by standing bolt the upper end, and the end of protective tube 2 is connected with supporting rib 14, and there is square casing 5 protective tube 2 outsides, and there is capping 3 on sleeve pipe 5 tops.Capping is connected with protective tube 2; supporting plate 4 and four floors 6 are arranged on the sleeve pipe 5; floor also is connected with plug 7; have on protective tube 2 outer walls below the plug 7 and equidistantly be the interior ring muscle 13 of 200-400mm; interior ring muscle outside is connected with perpendicular muscle 11 in 4; 90 ° of spaces; it equidistantly is the outer shroud muscle 12 of 200-400mm that interior perpendicular muscle outside has; the 50-150mm of being separated by between outer shroud muscle and the interior ring muscle; both are crisscross arranged, and outer shroud muscle outside is connected with 4 outer perpendicular muscle 9,90 ° of spaces; interior perpendicular muscle 11 interlaces 45 ° just with outer perpendicular being provided with of muscle 9; in; the lower end of outer perpendicular muscle all is connected with supporting rib 14, in; be evenly equipped with fish bone like anchor rib 10 between the outer shroud muscle around protective tube 2, direction all is inclined upwardly; be radial; and with protective tube 2 angles at 45, the ring muscle; perpendicular muscle; fish bone rib constitutes a metalolic network integral body, and the metal component surface in the network all has the compound material that smears of one deck; smear the coated outside refractory materials 8 of material, be similar to a cylinder.

Because the specification difference of spray gun; so equally spaced distance is also unequal between the ring muscle; 8 meters long spray guns for example; in the ring muscle equidistantly be 400 millimeters; the outer shroud muscle equidistantly also be 400 millimeters, the 100mm of being separated by between interior ring muscle and the outer shroud muscle, interior ring muscle and outer shroud muscle are along the interlaced 200mm of protective tube axis direction; every 200mm is one section, and every section all is provided with 8 fish bone like anchor ribs.Though the specification of spray gun is inequality, the setting of inside and outside perpendicular muscle all is identical with quantity.

During use, the screwed union that is threaded of winding-up pipe 1 upper end, tube stub connects flexible pipe, hose connection nitrogen air compressor machine and magnesium grain hold tank, cylindrical end is placed in the iron ladle, and high pressure nitrogen directly blows to the iron ladle bottom to the magnesium grain by the winding-up pipe, under the effect of negative pressure, the magnesium grain seethes and the abundant homogenizing of molten iron with nitrogen, and with molten iron in sulfide reaction, float to the molten iron face after generating slag, after the desulfurization of spray magnesium grain, the sulphur tolerance in the molten iron can be lower than 20PPm.Simultaneously in sweetening process, because high temperature, the material that smears of metallic surface is easy to volatilization, carbonization, makes between metalwork and the refractory materials and forms slight void, and can alleviate the cracking of spray gun surface refractory materials like this and come off, thus the work-ing life of improving spray gun.

This spray gun is 500-600 minute through the time of dusting on probation, compares with former spray gun and improves rifle 30-50% in age.

Claims

1, a kind of fish bone like desulphurization spray gun, it comprises that winding-up pipe, protective tube, anchoring piece and periphery are enclosed with refractory materials, is characterized in that; Winding-up pipe (1) outside suit protective tube (2); both connect by standing bolt the upper end; protective tube (2) is terminal to be connected with supporting rib (14); there is square casing (5) the protective tube outside; supporting plate (4) and floor (6) are arranged on the sleeve pipe; floor also is connected with plug (7); equally spaced interior ring muscle (13) is arranged on the protection tube wall below the plug (7); there is perpendicular muscle (11) in equally spaced 4 interior ring muscle outside; there is equally spaced outer shroud muscle (12) interior perpendicular muscle outside; there are equally spaced 4 outer perpendicular muscle (9) outer shroud muscle outside; in; the lower end of outer perpendicular muscle all is connected with supporting rib (14); in; be evenly equipped with fish bone like anchor rib (10) between the outer shroud muscle; its direction all is inclined upwardly, and with protective tube (2) angle at 45, the ring muscle; perpendicular muscle; the fish bone like anchor rib constitutes a metalolic network integral body; at network coated outside refractory materials (8), be similar to a cylinder.

2, according to the described fish bone like desulphurization spray gun of claim 1, it is characterized in that: between the interior ring muscle (13) is 200-400mm equidistantly, and between the outer shroud muscle (12) equidistantly also is 200-400mm, and interior ring muscle (13) is crisscross arranged with outer shroud muscle (12).

3, according to the described fish bone like desulphurization spray gun of claim 1, it is characterized in that: interior perpendicular muscle (11) interlaces 45 ° with the setting of outer perpendicular muscle (9).

4, according to the described fish bone like desulphurization spray gun of claim 1, it is characterized in that: between interior ring muscle (13) and the outer shroud muscle (12), 8 fish bone like anchor ribs (10) are all arranged in every section.