CN209836221U - Steel scrap baking system - Google Patents
Steel scrap baking system Download PDFInfo
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- CN209836221U CN209836221U CN201920600015.XU CN201920600015U CN209836221U CN 209836221 U CN209836221 U CN 209836221U CN 201920600015 U CN201920600015 U CN 201920600015U CN 209836221 U CN209836221 U CN 209836221U
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Abstract
The utility model relates to a scrap steel baking system, which comprises one or more groups of scrap steel preheating units arranged in parallel, wherein each group of scrap steel preheating units comprises a track, a movable trolley sliding along the track, a double-layer composite heating ship hopper arranged on the movable trolley, and a plurality of top-layer combustors arranged on a frame platform; the heating ship bucket comprises an inner layer steel plate, an outer layer steel plate and a refractory material poured between the inner layer steel plate and the outer layer steel plate, one end of the ship bucket is opened for discharging, the other end of the ship bucket is closed, and a tail burner is arranged on the outer layer steel plate; a plurality of side burners are arranged on both sides of the ship hopper; and a U-shaped coal gas pipeline and a U-shaped air pipeline are further arranged on the three sides of the outer steel plate of the ship hopper, and the U-shaped coal gas pipeline and the U-shaped air pipeline are communicated with an external air source through quick change connectors. The utility model discloses the structure sets up rationally, and the form is novel, and the suitability is strong, and work efficiency is high, has both reduced the cost and has satisfied the operation requirement again, is a high-efficient practical new design.
Description
Technical Field
The utility model belongs to the technical field of the steel scrap toasts, specifically a steel scrap baking system.
Background
In the production of steel, in order to save energy and reduce consumption, the scrap steel is generally required to be preheated, and from the economic benefit, the energy consumption of the converter can be greatly reduced on the one hand, and meanwhile, due to the shortening of the smelting time, the method contributes to the prolonging of the service life of a furnace lining, the reduction of the electrode consumption, the reduction of the maintenance cost, the improvement of the yield and the improvement of the steel grade quality to different degrees, and has great comprehensive economic benefit. The industrial enterprise is a large energy consumption household, the energy consumption is reduced, the emission of greenhouse gases and other nitrogen oxides can be greatly reduced, the environmental management is positively influenced, and the social benefit is obvious.
The existing scrap steel preheating system has single arrangement form, the burner has unreasonable arrangement structure, uneven up and down heating is caused when scrap steel is preheated, the fuel utilization rate is low, the heating efficiency is low, the pipeline design of the existing baking system is complex, and certain defects exist, when scrap steel is preheated, an external gas source main pipeline and an air source main pipeline (external gas source main pipeline) need to be respectively butted and communicated with a gas conveying pipeline and an air conveying pipeline of the burner on a preheating device (namely, a gas conveying pipeline on-site operation equipment) to supply continuous gas sources for the burner, after the scrap steel is preheated, the gas conveying pipeline or the air conveying pipeline of the burner on the on-site preheating device needs to be immediately transferred to a converter for smelting, the existing technology is that after preheating is finished, the gas conveying pipeline or the air conveying pipeline of the burner on-site preheating device needs to be respectively disconnected with the external gas source, and then the mobile equipment is transferred to the position of the converter with a preheating device to pour the preheated scrap steel into the converter for subsequent smelting. In the transfer process, the mobile equipment often needs to drag a long and heavy gas conveying pipeline fixed on the preheating device at the same time, so that the gas conveying pipeline is seriously damaged, the replacement and maintenance period is short, the expense is increased, and the potential safety hazard exists; and the existing pipeline butt joint installation operation is not only complicated but also laborious. In addition, in order to avoid and reduce heat loss, a hopper for containing the waste steel is usually lifted to the position of the converter immediately after the waste steel is preheated, and the preheated waste steel is poured into the converter for subsequent baking and smelting.
Disclosure of Invention
The utility model aims at overcoming prior art not enough and providing a steel scrap baking system, its structure sets up rationally, and the form is novel, and the suitability is strong, can be according to the nimble track direction of adjusting of operating mode condition in production place and the quantity of drying by the fire preheating unit, under the local permission condition, can set up many sets of baking systems side by side, improves work efficiency, and heats the ship fill and adopt double-deck steel sheet form, has both reduced the cost and has satisfied the operation requirement and improved the security again. The heating ship bucket is communicated with an external air source through the quick-change connector, is convenient and quick to disassemble and assemble, avoids abrasion to the ventilation pipeline, prolongs the service life of the pipeline and improves the production safety, and is a novel high-efficiency and practical design.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. According to the utility model provides a steel scrap baking system, including a set of or multiunit parallel steel scrap preheating unit that sets up side by side, each set of steel scrap preheating unit is including setting up in the track of ground or platform, the travelling car that slides along the track, set up on the travelling car and be used for holding the steel scrap material and the open-topped double-deck composite heating ship fill, when installing on frame platform and preheating, lie in the multiple top layer combustor above the double-deck composite heating ship fill; the rack platform is also provided with a top layer gas pipeline, a top layer air pipeline and a fan which are used for supplying gas and air for combustion to the top layer combustor;
the double-layer composite heating ship bucket comprises an inner-layer steel plate, an outer-layer steel plate and a refractory material poured between the inner-layer steel plate and the outer-layer steel plate, wherein the inner-layer steel plate is made of a composite material of stainless steel and carbon steel, the outer-layer steel plate is made of carbon steel, one end of the double-layer composite heating ship bucket is opened for discharging, the other end of the double-layer composite heating ship bucket is closed, and a tail hoisting plate and a tail combustor are arranged on the outer-layer steel plate at the; the two side surfaces of the double-layer composite heating ship bucket are provided with a plurality of side surface burners, and the upper parts of each side surface burner and each tail burner are provided with a protection plate;
the U-shaped coal gas pipeline and the U-shaped air pipeline are arranged around three sides of the outer steel plate of the double-layer composite heating ship hopper and used for supplying coal gas and air for combustion to the side burner and the tail burner, and the U-shaped coal gas pipeline and the U-shaped air pipeline are respectively communicated with an external coal gas source and an air main pipeline through quick change connectors;
lifting lugs for lifting the double-layer composite heating ship bucket are correspondingly arranged on two side surfaces of the double-layer composite heating ship bucket.
Furthermore, one surface of the inner steel plate of the double-layer composite heating ship bucket is a stainless steel layer which is in direct contact with the scrap steel, and the other surface of the inner steel plate is a carbon steel layer which is in contact with the poured refractory material.
Furthermore, two side faces of the double-layer composite heating ship bucket are also provided with positioning blocks for positioning the double-layer composite heating ship bucket at a fixed position on the movable trolley.
Furthermore, the quick-change connector comprises a male connector and a female connector matched with the male connector for use, the male connector comprises a butt joint pipe shaft which is connected with the first connector and is of a hollow structure, a fixed bottom plate which is sleeved on the butt joint pipe shaft, a plurality of grapple fixed supports which are arranged on the butt joint pipe shaft, and a plurality of cylinder bases which are arranged on the fixed bottom plate, wherein each grapple fixed support is hinged with a grapple, each cylinder base is hinged with a cylinder, one end of each grapple is hinged with the corresponding cylinder, and the other end of each grapple is provided with a locking block which protrudes inwards; the number of the grapples is at least 2, and the number of the air cylinders is equal to that of the grapples;
the female joint is provided with a second flange and a second connector which is used for being matched and connected with the first connector, an air pipe is connected between the second connector and the second flange, the outer wall surface of the second connector and the outer surface of the air pipe are in transition in a gradually-changed diameter mode, a conical surface I used for clamping and stabilizing the grapple is formed, and the conical surface I and the inclination of a conical surface II on the grapple are adapted to improve the locking effect of the grapple;
the outer wall surface of the first connecting joint is also provided with a plurality of ring grooves for mounting sealing rings, and each ring groove is internally provided with a sealing ring; when the female joint is in butt joint with the male joint, the first joint is inserted into the second joint, multi-stage sealing is realized through a plurality of sealing rings arranged on the outer wall surface of the first joint, and the grapple is clamped on the conical surface I under the action of the cylinder to realize butt joint and locking of the male joint and the female joint;
the U-shaped coal gas pipeline and the U-shaped air pipeline are communicated with a female joint of the quick-change joint through expansion joints, and the method specifically comprises the following steps: the female joint is fixed with one end of the expansion joint through the second flange, the other end of the expansion joint is fixedly installed with the U-shaped coal gas pipeline or the U-shaped air pipeline through a flange plate, and the male joint matched with the female joint for use is communicated with an external gas source through the flange plate.
Furthermore, a plurality of reinforcing plate ribs are further arranged on the fixed bottom plate, and each reinforcing plate rib is fixedly connected with the fixed bottom plate and the butt joint tubular shaft.
Furthermore, the outer wall surface of the first connector is of a gradually-changing diameter structure, and correspondingly, the inner wall of the second connector is of a gradually-changing diameter structure and is used for being matched and connected with the first connector.
Furthermore, a positioning device is arranged between the female joint and the male joint.
Furthermore, the positioning device is provided with a positioning ring for enabling the first connector and the second connector to be accurately butted, a conical surface III is arranged in the positioning ring, a positioning part is further arranged on the air pipe connected with the second connector, the second connector of the female connector penetrates through the positioning ring when the female connector and the male connector are butted, and the conical surface IV on the positioning part tightly abuts against the conical surface III in the positioning ring to achieve accurate positioning.
Furthermore, each side of the double-layer composite heating ship bucket is provided with one or more rows of side burners, and the upper rows of the side burners and the lower rows of the side burners are correspondingly arranged or staggered.
Borrow by above-mentioned technical scheme, the utility model discloses an advantage and effect lie in:
(1) the utility model discloses a scrap steel preheats the unit and can set up a plurality ofly side by side, can select number side by side according to on-the-spot industrial and mining, and every scrap steel preheats the unit and can independently exist, and every preheats the unit and has its independent vent line, each other does not influence, and every material loading, the baking of preheating the unit preheat, the state of unloading also does not influence each other, consequently the utility model discloses good adaptability has.
(2) The uncovered convenient material loading of double-deck composite heating ship fill top surface, the one end opening is conveniently unloaded, and this ship fill is bilayer structure, the pouring has refractory material between inlayer and the skin, inlayer and scrap steel material contact one side adopt the stainless steel layer, high temperature resistant, inlayer and refractory material contact surface can adopt the carbon steel layer, not only the cost is reduced but also satisfied the requirement that the heating ship fill inlayer needs high temperature resistance, and the high temperature that produces in preheating is showing to be reduced behind the refractory material layer, make double-deck composite heating ship fill outer temperature be unlikely to too high, avoid setting up the yielding condition under long-term use of lug on outer steel sheet, improve double-deck composite heating ship fill safety and life at the in-process of lifting by crane, the heating ship fill outer also can adopt the carbon steel, further reduce cost does not influence the performance of double-deck composite heating ship fill again.
(3) During preheating, the double-layer composite heating ship bucket top layer, the side surface and the tail part are provided with the burners for baking the waste steel materials, so that the defects of nonuniform heating, long baking time and low fuel utilization rate of the waste steel materials caused by unidirectional heating in the prior art are overcome, the preheating efficiency and the fuel utilization rate are further improved, and the purposes of saving energy, reducing consumption and saving enterprise cost are achieved.
(4) The gas pipeline and the air pipeline on the double-layer composite heating ship bucket are designed into U-shaped pipelines, and can be just arranged on three side surfaces of the heating ship bucket, so that the pipeline wiring design is simplified, and the use is more convenient and safer.
(5) The ventilation pipeline of the combustor can be communicated in a butt joint mode through the quick change connectors, the disassembly and the assembly are easy and quick, the operation steps are simplified, the working efficiency is improved, meanwhile, the problem that the ventilation pipeline is damaged seriously due to the fact that the ventilation pipeline is frequently dragged to move in the work of a movable trolley in the prior art is solved, the maintenance and replacement period is short, the expense expenditure is increased, and the potential safety hazard is solved, so that the technical measure is economical, quick, safe and effective. And a protection plate is arranged above each burner and used for preventing the burner nozzles of the burners from being broken by the falling scrap steel during feeding.
(6) The utility model discloses the structure sets up rationally, and the form is novel, and the suitability is strong, can adjust the track direction in a flexible way and dry by the fire the quantity of preheating the unit according to the operating mode condition in production place, under the circumstances is allowed in the place, can set up many sets of baking systems side by side, improves work efficiency.
Drawings
FIG. 1 is a schematic view of a scrap baking system formed by two sets of scrap preheating units arranged in parallel;
FIG. 2 is a schematic view of another view of FIG. 1;
FIG. 3 is a perspective view of a double-deck composite heating vessel;
FIG. 4 is a longitudinal cross-sectional view of a double-layered composite heating vessel;
FIG. 5 is a top view of a double-deck composite heating vessel;
FIG. 6 is a perspective view of a male connector of the quick change coupler;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a right side view of FIG. 7;
FIG. 9 is a front view of the female coupling of the quick change coupler;
FIG. 10 is a sectional view taken along line A-A of FIG. 9;
FIG. 11 is a schematic view showing the male and female connectors in a locked condition in the quick-change coupling;
fig. 12 is a schematic view of the quick-change coupling in a disconnected state of the male and female couplings.
[ description of elements and symbols ]
1-a track; 2-moving the trolley; 3-double-layer composite heating ship bucket; 4-topping combustor; 5-top layer gas pipeline;
6-top layer air pipeline; 7-a fan; 8-inner layer of the ship hopper; 9-outer layer of the ship bucket; 10-a refractory material;
11-tail hoisting plate; 12-a tail burner; 13-side burner; 14-protective plate; 15-U type coal gas pipeline;
a 16-U type air pipeline; 17-positioning blocks; 18-a male connector; 19-a female connector; 20-a first connector;
21-butting pipe shafts; 22-a fixed base plate; 23-grapple fixing support; 24-a cylinder base; 25-a grapple;
26-a cylinder; 27-a locking block; 28-a second flange; 29-a second connector; 30-trachea; 31-cone I;
32-cone II; 33-an expansion joint; 34-a ring groove; 35-external gas source; 36-reinforcing plate ribs; 37-a positioning device;
38-a positioning ring; 39-cone III; 40-a positioning element; 41-conical surface IV; 42-exhaust gas discharge pipe; 43-lifting lugs;
44-a first flange; 45-compressed air pipe; 46-burner outlet; 47-auto-ignition mechanism flame outlet;
a 48-U air line inlet; 49-U type gas pipeline gas inlet.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the predetermined objects, the following detailed description of the embodiments, structures and features of a scrap baking system according to the present invention will be made with reference to the accompanying drawings.
Taking fig. 1 and fig. 2 as an example, the scrap steel baking system of the present invention includes one or more sets of scrap steel preheating units arranged in parallel, each set of scrap steel preheating unit includes a track 1 arranged on the ground or on the platform, a moving trolley 2 sliding along the track, a double-layer composite heating hopper 3 arranged on the moving trolley for containing scrap steel and having an opening at the top, and a plurality of top layer burners 4 arranged on the frame platform and above the double-layer composite heating hopper during preheating; the rack platform is also provided with a top layer gas pipeline 5, a top layer air pipeline 6 and a fan 7 connected with the top layer air pipeline, and the top layer gas pipeline and the top layer air pipeline are used for supplying gas and air for combustion to the top layer combustor; an exhaust gas discharge pipe 42 is also provided on the rack platform for discharging exhaust gas generated during preheating.
The double-layer composite heating ship bucket comprises an inner layer steel plate 8, an outer layer steel plate 9 and a refractory material 10 poured between the inner layer steel plate and the outer layer steel plate. The inner layer steel plate 8 is a composite steel plate formed by stainless steel and carbon steel through an explosion welding process, one surface of the inner layer steel plate is a stainless steel layer which is directly contacted with a scrap steel material, the other surface of the inner layer steel plate is a carbon steel layer which is contacted with a poured refractory material, and the outer layer steel plate is made of the carbon steel material. This clad steel plate is showing on the one hand and has reduced manufacturing cost, on the other hand stainless steel layer is high temperature resistant, can satisfy the requirement that the heating ship fill nexine needs high temperature resistance with scrap steel material direct contact, and the clad steel plate does not have the requirement of high temperature resistance with the one side of refractory material contact, can adopt the carbon steel, the refractory material of pouring between the double-deck composite heating ship fill inlayer plays thermal-insulated effect, can show the temperature of being heated that reduces the outer steel sheet of ship fill, produce when avoiding the lug to be lifted by crane and warp, the life of factor of safety and double-deck composite heating ship fill improves.
The top end of the double-layer composite heating ship bucket is open, so that loading is facilitated, one end of the ship bucket is open, unloading is facilitated, the other end of the ship bucket is closed, a tail hoisting plate 11 and at least one tail burner 12 are arranged on an outer steel plate at the closed end, and a tail burner is shown in fig. 3; the two side surfaces of the double-layer composite heating ship bucket are also provided with a plurality of side surface burners 13, and the upper parts of each side surface burner and each tail burner are provided with a protection plate 14 for preventing the burners from being broken by falling waste steel materials during charging; the number of the burners on the two side surfaces of the ship hopper can be equal or unequal, and fig. 3 shows that the two side surfaces are provided with 3 side burners. The side burners may be arranged in one row or several rows, and the burners may be arranged correspondingly or in different rows. The burners of the side burner and the tail burner penetrate through the double-layer steel plate of the double-layer composite heating ship bucket, the burner outlet 46 is arranged on the inner layer of the inner layer steel plate, and the flame outlet 47 of the automatic ignition mechanism is arranged beside the burner outlet.
The gas and air for the combustion of the side burner and the tail burner are supplied through a U-shaped coal gas pipeline 15 and a U-shaped air pipeline 16 which surround three sides of an outer steel plate of the double-layer composite heating ship bucket, the U-shaped coal gas pipeline and the U-shaped air pipeline are distributed vertically and surround three outer sides of the double-layer composite heating ship bucket, and the U-shaped coal gas pipeline is positioned below the U-shaped air pipeline, as shown in figure 3. The U-shaped coal gas pipeline is communicated with the coal gas inlets of each side burner and each tail burner, and the U-shaped air pipeline is communicated with the air inlets of each side burner and each tail burner; the U-shaped gas pipeline air inlet 49 and the U-shaped air pipeline air inlet 48 are respectively communicated with an external gas source and an air main pipeline through quick change connectors. A compressed air pipe 45 is also arranged between the U-shaped coal air pipeline and the U-shaped air pipeline and is used for conveying compressed air to the ignition mechanism.
The position of the field rack can be fixed, so that the gas pipeline and the air pipeline of the top-layer combustor mounted on the rack do not need to be frequently connected and disconnected, and can be connected with an external gas source and an air main pipeline through a quick-change connector or can adopt the conventional common connection mode.
The quick-change connector comprises a male connector 18 and a female connector 19 matched with the male connector for use, the male connector comprises a butt joint pipe shaft 21 which is connected with a first connector 20 and is of a hollow structure, a fixing bottom plate 22 which is sleeved on the butt joint pipe shaft, a plurality of grapple fixing supports 23 which are arranged on the butt joint pipe shaft, and a plurality of cylinder bases 24 which are arranged on the fixing bottom plate, wherein each grapple fixing support is hinged with a grapple 25, each cylinder base is hinged with a cylinder 26, one end of each grapple is hinged with the corresponding cylinder, and the other end of each grapple is provided with a locking block 27 which protrudes inwards.
The female joint on be equipped with second flange 28 and be used for the second connector 29 of being connected with the cooperation of first connector 20, be connected with trachea 30 between second connector 29 and the second flange 28, can be the integral type structure between second connector 29 and the trachea 30, also can be through the rigid connection structure of welding formation, and be transition for gradually becoming the footpath between second connector outer wall and the trachea, form the conical surface I31 that is used for card steady grapple 25, the slope of conical surface II 32 on this conical surface I and the grapple suits and is used for improving the locking effect of grapple, an embodiment is that conical surface I is parallel or is close parallel structure with conical surface II, also can be that conical surface I is circular-arc with conical surface II. The length of the air pipe is not limited, and the proper size can be selected according to the actual situation in the processing. The second flange can be connected with a flange plate on an expansion joint 33 with the length capable of being adjusted in a telescopic mode, the length of the gas conveying pipeline is adjusted through the expansion joint, so that different distances between the double-layer composite heating ship bucket U-shaped air pipeline air inlet 48 or the U-shaped air pipeline air inlet 49 and an external air source or a coal gas source are met, and the environmental adaptability of the ship bucket is improved.
The outer wall surface of the first connector is provided with a plurality of ring grooves 34 for mounting sealing rings, each ring groove is provided with an O-shaped sealing ring, when the female connector and the male connector are in butt joint, the male connector is fixed in position, the female connector moves along with the moving trolley to be close to the male connector, under the action of the air cylinder, the telescopic rod of the air cylinder extends to enable one end of the locking block of the grapple to be opened outwards, the female connector continues to be close to the male connector to enable the first connector to be inserted into the second connector and realize multi-stage sealing through the plurality of sealing rings arranged on the outer wall surface of the first connector, after the female connector and the first connector are in butt joint, the telescopic rod of the air cylinder contracts to enable one end of the locking block of the grapple to be buckled inwards and clamped on the conical surface I, and; the number of the grapples is at least 2, 3 in fig. 8, and the number of the air cylinders and the grapples is equal.
The U-shaped coal gas pipeline and the U-shaped air pipeline are communicated with a female joint of the quick-change joint through expansion joints, and the method specifically comprises the following steps: the female joint is fixed with one end of an expansion joint 33 through a second flange 28, and the other end of the expansion joint is fixedly installed with a U-shaped gas pipeline gas inlet 49 or a U-shaped air pipeline gas inlet 48 through a flange plate; the male fitting used in conjunction with the female fitting is in communication with the external gas source 35 via a first flange 44. As shown in fig. 1 and 11.
Further, a plurality of reinforcing plate ribs 36 are further arranged on the fixed bottom plate, and each reinforcing plate rib is fixedly connected with the fixed bottom plate and the butt-joint pipe shaft, as shown in fig. 6.
Further, the outer wall surface of the first connector is of a gradually-changing-diameter structure, and correspondingly, the inner wall of the second connector is of a gradually-changing-diameter structure and is used for being matched and connected with the first connector, so that the sealing performance between the first connector and the second connector is improved, as shown in fig. 7 and 10.
Further, a positioning device 37 is disposed between the female connector and the male connector, as shown in fig. 1 and 11, a positioning ring 38 is disposed on the positioning device for precisely abutting the first connector and the second connector, and a tapered surface iii 39 is disposed in the positioning ring, as shown in fig. 12. Still be provided with setting element 40 on the trachea of being connected with the second connector, when cloudy, the butt joint of male joint, the male joint rigidity, the female joint moves along with the travelling car and is close to the male joint, and the second connector of female joint passes the holding ring earlier, and conical surface IV 41 on conical surface III in the holding ring and the setting element pushes up and tightly realizes accurate location, and the second connector that passes the holding ring is inserted with the first connector of male joint again and is connected, specifically is: under the cylinder effect, the cylinder telescopic link extension makes the latch segment one end of grapple all outwards open, and first connector inserts in the second connector and realizes multistage sealed through installing a plurality of sealing washers on first connector outer wall, and after both butt joints, the cylinder telescopic link shrink makes the latch segment one end of grapple all inwards lock and block on conical surface I, and under the cylinder effect, the latch segment of grapple tightly blocks the butt joint locking that realizes male joint and female joint on conical surface I. When the quick-change connector is disassembled, the telescopic rod is controlled to extend out through the air cylinder, one end of the locking block of the grapple is opened outwards, and mechanical force is applied to separate the female connector from the male connector. The positioning device is arranged at a position which just enables the second connector to penetrate through the positioning ring and to be in butt joint with the first connector for locking, and meanwhile, the conical surface III in the positioning ring and the conical surface IV 41 on the positioning piece can be tightly propped.
Further, the air inlet of the U-shaped air pipeline and the air inlet of the U-shaped air pipeline are preferably located at one end of the tail portion of the double-layer composite heating ship hopper (the end provided with the tail portion hoisting plate and the tail portion burner), as shown in fig. 3. One end of the discharge opening of the steel plate at the inner layer of the double-layer composite heating ship bucket can be in arc transition, as shown in figures 3-5, and can also be in other transition forms.
The two side surfaces of the double-layer composite heating ship bucket are also correspondingly provided with lifting lugs 43 for lifting the ship bucket and positioning blocks 17 for positioning the ship bucket on the movable trolley at fixed positions, and each side surface is at least provided with two lifting lugs, as shown in fig. 3. The number of the positioning blocks is not limited, and each side surface shown in fig. 5 has 6 positioning blocks.
This steel scrap baking system preheats the steel scrap according to the order of material loading, toast and preheat, unload, and quick change coupler's male joint is fixed with air supply intercommunication position, and quick change coupler's female joint passes through the expansion joint and is connected with U type coal gas pipeline air inlet and U type air pipeline air inlet on the ship fill, and double-deck compound heating ship fill is along with the subsidiary female joint of travelling car slip simultaneously when sliding on the track. Firstly, a movable trolley bears a double-layer composite heating ship bucket and slides out from the lower part of a rack to a material loading position along a track, a crown block or a forklift pours waste steel into the double-layer composite heating ship bucket from the top surface of an opening of the ship bucket, the double-layer composite heating ship bucket is loaded, the movable trolley bears the double-layer composite heating ship bucket and slides to the lower part of the rack along the track, a male connector and a female connector are connected, all gas pipelines and air pipelines of a tail combustor and a side combustor are connected (the butt joint process of a quick-change connector is as described above), and due to the fixed position of the rack, the gas pipeline and the air pipeline of a. And starting all the burners through the automatic ignition mechanisms of all the burners to bake and preheat the scrap steel in the double-layer composite heating ship hopper. After preheating, the burner is closed, the female connector and the male connector of the U-shaped coal gas pipeline and the U-shaped air pipeline are disassembled (the disassembling process of the quick change connector is as described above), the U-shaped coal gas pipeline and the U-shaped air pipeline of the tail burner and the side burner are respectively disconnected with an external air source, the expansion joint is contracted, the moving trolley is driven by a motor or external mechanical force, the double-layer composite heating ship bucket carried by the moving trolley slides out from the rack along the track, after the ship bucket completely slides out, the lifting hook lifting lug lifts the double-layer composite heating ship bucket to a discharging position, and the discharging lifting hook hooks the tail lifting plate to enable the double-layer composite heating ship bucket to incline and discharge from one end of the opening of the ship bucket. After unloading, the double-layer composite heating ship bucket is lifted by the lifting hook and placed on the moving trolley, the double-layer composite heating ship bucket is fed again, then the moving trolley is driven by a motor or external mechanical force to slide to the position below the rack, all gas pipelines and air pipelines are butted according to the steps, and baking and preheating are continuously carried out. Continuous baking and preheating of the scrap steel are carried out according to the sequence of feeding, baking and preheating and discharging, and the position of the rack and the top layer combustor arranged on the rack are fixed in the whole process. The moving trolley can be driven by a motor or external mechanical force.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical spirit of the present invention without departing from the technical scope of the present invention.
Claims (9)
1. A scrap steel baking system is characterized by comprising one or more groups of scrap steel preheating units arranged in parallel, wherein each group of scrap steel preheating units comprises a track (1) arranged on the ground or a platform, a moving trolley (2) sliding along the track, a double-layer composite heating ship bucket (3) which is arranged on the moving trolley and used for containing a scrap steel material and is provided with an opening at the top, and a plurality of top-layer burners (4) which are arranged on a rack platform and are positioned above the double-layer composite heating ship bucket during preheating; the rack platform is also provided with a top layer gas pipeline (5), a top layer air pipeline (6) and a fan (7) which are used for supplying gas and air for combustion to the top layer combustor;
the double-layer composite heating ship bucket comprises an inner-layer steel plate, an outer-layer steel plate and a refractory material poured between the inner-layer steel plate and the outer-layer steel plate, wherein the inner-layer steel plate is made of a composite material of stainless steel and carbon steel, the outer-layer steel plate is made of carbon steel, one end of the double-layer composite heating ship bucket is opened for discharging materials, the other end of the double-layer composite heating ship bucket is closed, and a tail hoisting plate (11) and a tail combustor (12) are arranged on the outer-layer steel plate; a plurality of side burners (13) are arranged on two side surfaces of the double-layer composite heating ship bucket, and a protection plate (14) is arranged on the upper part of each side burner and each tail burner;
a U-shaped coal gas pipeline (15) and a U-shaped air pipeline (16) are further arranged around three sides of the outer steel plate of the double-layer composite heating ship hopper and used for supplying coal gas and air for combustion to the side burner and the tail burner, and the U-shaped coal gas pipeline and the U-shaped air pipeline are respectively communicated with an external coal gas source and an air main pipeline through quick change connectors;
lifting lugs (43) for lifting the double-layer composite heating ship bucket are correspondingly arranged on two side surfaces of the double-layer composite heating ship bucket.
2. The scrap baking system in accordance with claim 1, wherein the inner steel plate of the double-layered composite heating vessel has one surface of stainless steel layer in direct contact with the scrap and the other surface of carbon steel layer in contact with the poured refractory.
3. The scrap steel baking system according to claim 1, wherein the double-layered composite heating vessel is further provided with positioning blocks (17) at both sides thereof for positioning the double-layered composite heating vessel at a fixed position on the moving trolley.
4. The scrap steel baking system according to claim 1, wherein the quick change coupler comprises a male coupler (18) and a female coupler (19) used in cooperation with the male coupler, the male coupler comprises a hollow butt joint pipe shaft (21) connected with a first coupler (20), a fixed bottom plate (22) sleeved on the butt joint pipe shaft, a plurality of grapple fixing supports (23) arranged on the butt joint pipe shaft, a plurality of cylinder bases (24) arranged on the fixed bottom plate, each grapple fixing support is hinged with a grapple (25), each cylinder base is hinged with a cylinder (26), one end of each grapple is hinged with a corresponding cylinder, and the other end of each grapple is provided with an inwardly protruding locking block (27); the number of the grapples is at least 2, and the number of the air cylinders is equal to that of the grapples;
the female joint is provided with a second flange (28) and a second connector (29) which is used for being matched and connected with the first connector, an air pipe (30) is connected between the second connector and the second flange, the outer wall surface of the second connector (29) and the outer avoiding surface of the air pipe (30) are in transition of gradual change diameter, a conical surface I (31) for clamping and stabilizing the grapple is formed, and the conical surface I and the conical surface II (32) on the grapple are adaptive in inclination for improving the locking effect of the grapple;
the outer wall surface of the first connecting joint is also provided with a plurality of ring grooves (34) for mounting sealing rings, and each ring groove is internally provided with a sealing ring; when the female joint is in butt joint with the male joint, the first joint is inserted into the second joint, multi-stage sealing is realized through a plurality of sealing rings arranged on the outer wall surface of the first joint, and the grapple is clamped on the conical surface I under the action of the cylinder to realize butt joint and locking of the male joint and the female joint;
the U-shaped coal gas pipeline and the U-shaped air pipeline are communicated with a female joint of the quick-change joint through expansion joints, and the method specifically comprises the following steps: the female joint is fixed with one end of an expansion joint (33) through a second flange (28), the other end of the expansion joint (33) is fixedly installed with a U-shaped gas pipeline or a U-shaped air pipeline through a flange plate, and a male joint matched with the female joint for use is communicated with an external gas source (35) through the flange plate.
5. The scrap baking apparatus in accordance with claim 4, wherein the fixed base plate further includes a plurality of reinforcing ribs (36), each reinforcing rib being fixedly connected to the fixed base plate (22) and the docking pipe shaft (21).
6. The scrap steel baking system according to claim 4, wherein the outer wall surface of the first connector is of a tapered structure, and correspondingly, the inner wall surface of the second connector is of a tapered structure for mating connection with the first connector.
7. The scrap baking system in accordance with claim 4, wherein a positioning means (37) is further provided between the female joint and the male joint.
8. The scrap steel baking system according to claim 7, wherein the positioning device is provided with a positioning ring (38) for precisely abutting the first joint and the second joint, a conical surface III (39) is provided in the positioning ring, a positioning member (40) is further provided on the air pipe (30) connected to the second joint, the second joint of the female joint passes through the positioning ring when the female joint and the male joint are abutted, and a conical surface IV (41) on the positioning member abuts against the conical surface III (39) in the positioning ring to achieve precise positioning.
9. The scrap steel baking system according to claim 1, wherein the double-layered composite heating vessel has one or more rows of side burners provided on each side, and the upper rows and the lower rows of the side burners are arranged in correspondence or in a staggered arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600015.XU CN209836221U (en) | 2019-04-28 | 2019-04-28 | Steel scrap baking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600015.XU CN209836221U (en) | 2019-04-28 | 2019-04-28 | Steel scrap baking system |
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| CN209836221U true CN209836221U (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913617A (en) * | 2019-04-28 | 2019-06-21 | 洛阳沃达节能科技有限公司 | A kind of steel scrap baking system |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913617A (en) * | 2019-04-28 | 2019-06-21 | 洛阳沃达节能科技有限公司 | A kind of steel scrap baking system |
| CN109913617B (en) * | 2019-04-28 | 2023-11-03 | 洛阳沃达节能科技有限公司 | Scrap steel baking system |
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