CN210802044U

CN210802044U - Scrap steel conveyor

Info

Publication number: CN210802044U
Application number: CN201921190534.XU
Authority: CN
Inventors: 王东明; 刘松涛
Original assignee: Henan Winner Vibrating Equipment Co Ltd
Current assignee: Henan Winner Vibrating Equipment Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-19
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to the field of steel-making equipment, in particular to a scrap steel conveyor, which comprises a supporting frame, the upper end of the supporting frame is provided with a vibrating conveyor for conveying scrap steel, the working part of the vibrating conveyor is a working groove, a smoke hood for heating the scrap steel is arranged above the working groove, the smoke hood is provided with a burner pointing to the inner cavity of the working groove, a gas pipeline for supplying gas to the burner is arranged outside the smoke hood, the side wall of the working groove is provided with a cooling device, the cooling device comprises a cooling interlayer arranged on the wall of the working groove, one side of the working groove is provided with a cold air inlet pipe, the other side of the working groove is provided with a hot air outlet pipe, the hot air outlet pipe is communicated with a combustion-supporting air inlet pipe of the burner, the cold air inlet pipe is communicated with a pointing working groove blower, two sides of the working groove are respectively communicated with, an outward draught fan is further arranged on the rear side of the heat exchanger on the smoke exhaust pipe, so that the heat is generated uniformly, and the energy utilization rate is high.

Description

Scrap steel conveyor

Technical Field

The utility model relates to a steelmaking equipment field especially relates to a scrap steel conveyer.

Background

Energy conservation and consumption reduction are important subjects of electric furnace smelting, wherein the waste steel is preheated by using the waste heat of the flue gas, so that people pay attention to the waste steel. A large amount of high-temperature flue gas is generated in the electric furnace smelting process, the temperature of the flue gas is up to over 1000 ℃, and the smoke discharge amount is up to 500-1200 m 3/(h.t). The sensible heat of the flue gas is utilized to preheat the scrap steel, so that great economic benefit can be generated.

The existing horizontal vibrating conveyor comprises a supporting frame, a vibrating conveyor for conveying waste steel is arranged at the upper end of the supporting frame, a working part of the vibrating conveyor is a working groove, a smoke hood for heating the waste steel is arranged above the working groove, a burner is arranged on the smoke hood, a gas pipeline for supplying gas to the burner is arranged outside the smoke hood, the working groove adopts an interlayer structure, circulating water is introduced into the interlayer to cool the working groove, the working groove is prevented from being deformed due to overhigh temperature, but the existing structure has lower heat efficiency and can not meet the requirement of a client on more uniform baking temperature of the waste steel, an airtight space is formed between the working groove and the smoke hood, and combustion substances and combustion-supporting air enter the airtight space to form positive pressure, so that heat after combustion can not form relative flow in the airtight space, the scrap near the flame had begun to melt and the scrap far from the flame had still not been red.

Disclosure of Invention

An object of the utility model is to overcome not enough among the prior art, provide a scrap steel conveyer that the heating is even, energy utilization is high.

The utility model discloses a realize through following technical scheme: a scrap steel conveyor comprises a support frame, a vibrating conveyor for conveying scrap steel is arranged at the upper end of the support frame, a working part of the vibrating conveyor is a working groove, a smoke hood for heating the scrap steel is arranged above the working groove, a burner pointing to the inner cavity of the working groove is arranged on the smoke hood, a gas pipeline for supplying gas to the burner is arranged outside the smoke hood, a cooling device for cooling the wall of the working groove is arranged on the side wall of the working groove, the cooling device comprises a cooling interlayer arranged on the wall of the working groove, a cold air inlet pipe is arranged on one side of the working groove, a hot air outlet pipe is arranged on the other side of the working groove, the cold air inlet pipe and the hot air outlet pipe are communicated through the cooling interlayer, the hot air outlet pipe is communicated with a combustion-supporting air inlet pipe of the burner, and a cold air blower is communicated with the pointing working, the two sides of the working groove are respectively communicated with a side air suction pipe, a smoke exhaust pipe is connected between one end of each side air suction pipe, the smoke exhaust pipe is connected with a heat exchanger, and an outward draught fan is further arranged on the smoke exhaust pipe and located on the rear side of the heat exchanger.

Further, a feeding skirt edge for preventing the scrap steel from scattering is arranged at the edge of the feeding end of the working groove.

Further, be provided with the observation window that is used for observing the interior scrap steel state of conveyer on the petticoat pipe, the observation window has a plurality ofly, and a plurality of observation windows evenly distributed along the length direction of petticoat pipe.

Further, the nozzle has two, and two nozzle settings are at the petticoat pipe top, and two nozzle distribute in the petticoat pipe both sides along the length direction of petticoat pipe, and arbitrary nozzle that is listed as includes a plurality of nozzles of evenly distributed.

Furthermore, be provided with on the inner wall of work groove with side suction duct assorted exhaust vent, the exhaust vent has the multiunit, and side suction duct passes through the branch pipe and communicates with a corresponding a set of exhaust vent, and arbitrary group exhaust vent comprises a plurality of rectangular shape exhaust vent.

Further, the smoke hood is in sealing connection with the working groove through a sealing groove.

Furthermore, reinforcing ribs are arranged between the hot air outlet pipe, the smoke exhaust pipe and the outer wall of the working groove.

The beneficial effects of the utility model reside in that: fresh air is injected into the interlayer of the working tank by the air blower, the air is preheated when passing through the cooling interlayer, the preheated air directly enters the burner to participate in combustion, the combustion temperature is improved due to the temperature increase of combustion-supporting air, the preheating temperature of scrap steel is favorably improved, cold air entering the working tank simultaneously reduces the temperature of the working tank, the deformation of the working tank due to overheating is prevented, the heat efficiency is improved, and the service life of the working tank is prolonged. In order to enable the closed space formed between the working groove and the smoke hood to form negative pressure, the bottom of the inner side wall of the working groove is partially provided with a plurality of strip-shaped ventilating holes, the outer sides of the two side walls of the working groove are respectively provided with a side air suction pipe, the air outlet holes formed in the inner side wall of the working groove are communicated together, the side air suction pipes are communicated to a smoke exhaust pipe, then a heat exchanger and an induced draft fan are arranged at the tail end of the smoke exhaust pipe, the closed space formed between the working groove and the smoke hood forms negative pressure through the work of the induced draft fan, the heat after combustion flows in the working groove, the scrap steel in the working groove is uniformly preheated, and the energy utilization.

Drawings

FIG. 1 is a schematic front view of embodiment 1;

FIG. 2 is a schematic left side view of embodiment 1;

FIG. 3 is a right side view schematically showing embodiment 1;

FIG. 4 is a schematic front view of the work tank;

FIG. 5 is a schematic view of the structure of direction A in FIG. 4;

FIG. 6 is a schematic view of the structure of the direction B in FIG. 4;

wherein: the method comprises the following steps of 1-a support frame, 2-an electromagnetic vibrator, 3-a working groove, 4-an observation window, 5-a smoke hood, 6-a combustion air inlet pipe, 7-a feeding skirt edge, 8-a side air suction pipe, 9-a heat exchanger, 10-an induced draft fan, 11-a sealing groove, 12-a reinforcing rib, 13-a smoke exhaust pipe, 14-a cold air inlet pipe, 15-a burner, 16-a gas pipeline, 17-a cooling interlayer, 18-an air outlet hole and 19-a hot air outlet pipe.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-6, a scrap steel conveyor comprises a support frame 1, a vibration conveyor for conveying scrap steel is mounted at the upper end of the support frame, the vibration conveyor comprises a vibration bracket, an electromagnetic vibrator 2 is mounted on the vibration bracket, vibration is started through the electromagnetic vibrator 2, a working part is mounted on the vibration bracket, the working part is a working groove 3, the working groove is made of high-temperature-resistant and wear-resistant 06Cr25Ni20 (GB/T20878-2007) material steel, a smoke hood 5 for heating the scrap steel is mounted above the working groove, the smoke hood and the working groove are in sealing connection through a sealing groove 11, the sealing groove is mounted on two parallel support plates at the upper end of the working groove, for convenient processing, the support plates can be channel steel, an inserting plate inserted between the two support plates is mounted at the lower end of the smoke hood, the inserting plate and the support plates are matched to form a sealing, the gas hood is provided with a burner 15, a gas pipeline 16 for supplying gas to the burner is arranged outside the gas hood, a cooling device for cooling the wall of the working groove is arranged on the side wall of the working groove, the cooling device comprises a cooling interlayer 17 arranged on the wall of the working groove, one side of the working groove is provided with a cold air inlet pipe 14, the other side of the working groove is provided with a hot air outlet pipe 19, the cold air inlet pipe and the hot air outlet pipe are communicated through the cooling interlayer, the hot air outlet pipe is communicated with a combustion air inlet pipe 6 of the burner, the cold air inlet pipe is communicated with a blower pointing to the working groove, the specific heat capacity of the air is small, in the embodiment, normal temperature air enters from one side of the cooling interlayer, passes through the bottom of the cooling interlayer and then exits from the other side of the cooling interlayer, the flow path is shortened, the temperature of, simultaneously, preheated air directly enters the burners to participate in combustion after coming out of the outlet, the air blower selects a centrifugal fan, sufficient air pressure can be provided for hot air entering the burners, the temperature of combustion-supporting air is preheated to 200-300 ℃ from the normal temperature of 25 ℃, the combustion temperature is directly increased by 100-200 ℃, if under the condition that other parameters are the same, the using amount of coal gas can be reduced, the production cost is reduced, two burners are arranged, the two burners are obliquely and downwards arranged at the top of the smoke hood, the two burners are distributed on the two sides of the smoke hood along the length direction of the smoke hood, any one burner comprises a plurality of burners which are uniformly distributed, the distance between every two adjacent burners in the same row is 600mm, and the uniform heating is ensured.

The two sides of the working groove are respectively communicated with a side air suction pipe 8, the right ends of the two side air suction pipes are communicated with a smoke exhaust pipe 13 together, the smoke exhaust pipe is connected with a heat exchanger 9, an outward draught fan 10 is further installed on the smoke exhaust pipe and located on the rear side of the heat exchanger, aiming at the problem that the heat mobility after combustion is poor, the embodiment adopts the side air suction pipes, the draught fan pumps negative pressure to the inner cavity of the working groove through the side air suction pipes to ensure that positive pressure is changed into negative pressure in a closed space formed by a smoke hood and the working groove, the mobility of heat in the closed space is improved, so that the uniform preheating of waste steel is better facilitated, the phenomenon that the waste steel close to a burner is baked to generate adhesion and the lower part of the waste steel does not turn red is prevented, the specific scheme is that air outlet holes 18 matched with the side air suction pipes are processed on the inner wall of the working groove, the air, any group of exhaust vent comprises a plurality of rectangular shape exhaust vents, can guarantee that the air inlet is even, set up the pipe of discharging fume, draw the flue gas that produces in the work groove, install the heat exchanger at the end of exhaust pipe, install the draught fan behind the heat exchanger, the flue gas temperature of taking out from the work inslot is about 600 ℃ probably, the draught fan can't work under this kind of temperature, install the heat exchanger, waste flue gas carries out the heat transfer with water in the heat exchanger, the waste flue gas temperature of heat exchanger export can reduce to below 260 ℃, can directly arrange into in the coal gas dust pelletizing system, water after the heat transfer gets into the cooling tower through the return water pipeline and cools off the back cycle and uses.

The reinforced shirt rim 7 that is used for preventing the scrap steel from scattering is installed to the feed end edge of work groove, the convenience is used at reinforced in-process, install observation window 4 that is used for observing the interior scrap steel state of conveyer on the petticoat pipe, the observation window has a plurality ofly, a plurality of observation windows are along the length direction evenly distributed of petticoat pipe, conveniently observe the situation in the work groove, the side tuber pipe that inhales, all install strengthening rib 12 between tub and the work groove outer wall of discharging fume, guarantee that cold wind advances the pipe, hot-blast exit tube, discharge fume and stably be connected between the groove, reduce the not hard up because of vibrating the leading to.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a scrap steel conveyor, includes the support frame, the support frame upper end is provided with the jigging conveyer that is used for carrying the scrap steel, the work portion of jigging conveyer is the work groove, work groove top is provided with the petticoat pipe that is used for heating the scrap steel, be provided with the directional nozzle of working the inslot chamber on the petticoat pipe, the petticoat pipe is provided with the gas pipeline that is used for providing the gas to the nozzle outward, its characterized in that: the utility model discloses a work groove, including work groove lateral wall, work groove, be provided with on the groove lateral wall and be used for carrying out refrigerated cooling device to the work cell wall, cooling device is including setting up the cooling intermediate layer on the work cell wall, work groove wherein one side is provided with cold wind and advances the pipe, the opposite side of work groove is provided with hot-blast exit tube, cold wind advances to advance through cooling intermediate layer intercommunication between pipe and the hot-blast exit tube, hot-blast exit tube intercommunication advances the pipe to the combustion-supporting air of nozzle, cold wind advances the pipe intercommunication and has directional work groove air-blower, work groove both sides respectively communicate a side draft tube, two side draft tubes wherein are connected with the pipe of discharging fume between one end, the union coupling of discharging fume has the heat.

2. The scrap conveyor according to claim 1, wherein: and a feeding skirt edge for preventing the scrap steel from scattering is arranged at the edge of the feeding end of the working groove.

3. The scrap conveyor according to claim 1, wherein: be provided with the observation window that is used for observing the interior scrap steel state of conveyer on the petticoat pipe, the observation window has a plurality ofly, and a plurality of observation windows are along the length direction evenly distributed of petticoat pipe.

4. The scrap conveyor according to claim 1, wherein: the nozzle has two, and two nozzle settings are at the petticoat pipe top, and two nozzles distribute in the petticoat pipe both sides along the length direction of petticoat pipe, and arbitrary nozzle that is listed as includes evenly distributed's a plurality of nozzles.

5. The scrap conveyor according to claim 1, wherein: the inner wall of the working groove is provided with air outlet holes matched with the side air suction pipes, the air outlet holes are multiple groups, the side air suction pipes are communicated with a corresponding group of air outlet holes through branch pipes, and any group of air outlet holes is composed of a plurality of strip-shaped air outlet holes.

6. The scrap conveyor according to claim 1, wherein: the smoke hood is connected with the working groove in a sealing mode through the sealing groove.

7. The scrap conveyor according to claim 1, wherein: reinforcing ribs are arranged between the hot air outlet pipe, the smoke exhaust pipe and the outer wall of the working groove.