Thin oil type horizontal feeding waste steel preheating system

Abstract

The utility model discloses a thin oil type horizontal feeding waste steel preheating system, and relates to the technical field of waste steel preheating, in particular to the thin oil type horizontal feeding waste steel preheating system which comprises a horizontal conveying belt and a thin oil station, an electric furnace is installed at one end of the horizontal conveying belt, and a heating cavity is formed in the position, close to the upper portion of the electric furnace, of the horizontal conveying belt. A waste steel containing hopper is installed above the other end of the horizontal conveying belt, and vibration exciters are installed below the heating cavity and the waste steel containing hopper. Through the arrangement of the thin oil station, the thin oil type horizontal feeding waste steel preheating system has a good lubricating effect, so that the service life of equipment can be prolonged, the energy loss can be reduced, and the operation cost can be reduced; the thin oil type horizontal feeding waste steel preheating system has the advantages that heat in the electric furnace can be led out to preheat waste steel through a simple structure, and therefore the manufacturing cost and the operation cost are low.

Description

Technical Field

[0001] The utility model relates to the technical field of scrap steel preheating, in particular to a thin oil type horizontal feeding scrap steel preheating system. Background Art

[0002] With the development of the scrap steel preheating field, horizontal feeders have become an indispensable part, but traditional horizontal feeders have problems such as high energy consumption and high maintenance costs. The fundamental reason is the grease lubrication of the vibrator. The sealing of grease lubrication is poor, which easily causes the bearings to be contaminated with dust and moisture, leading to internal bearing corrosion and damage. Grease lubrication will change with the change of temperature, and its viscosity and fluidity will change, resulting in a decrease in lubrication effect and damage to the equipment. In addition, the friction resistance of grease lubrication is large, which affects the mechanical efficiency and increases the energy consumption of the equipment. Although the existing scrap steel preheating device also recycles the preheating of the electric furnace, its structure is to transport the waste heat over long distances through pipelines. Not only is the structure complex and the cost is high, but the power required for operation is also large, resulting in high operating costs. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a thin oil type horizontal feeding scrap steel preheating system, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a thin oil type horizontal feeding scrap steel preheating system, comprising a horizontal conveyor belt and a thin oil station, an electric furnace is installed at one end of the horizontal conveyor belt, a heating chamber is arranged above the horizontal conveyor belt close to the electric furnace, a scrap steel placing bucket is installed above the other end of the horizontal conveyor belt, vibrators are installed below the heating chamber and the scrap steel placing bucket, an oil inlet pipe and an oil outlet pipe are arranged between the vibrator and the thin oil station, an air outlet, a dynamic sealing device and a flat material device are installed in sequence above the horizontal conveyor belt from the heating chamber to the scrap steel placing bucket, and a sealing cover is arranged above the air outlet and the dynamic sealing device.

[0007] Preferably, the thin oil station consists of a thin oil tank, a water cooling device and an oil pump. The thin oil tank stores thin oil inside. The water cooling device is installed at the outlet of the thin oil tank to cool the thin oil. When the oil pump is working, the thin oil is drawn out from the outlet of the thin oil tank and poured into the exciter through the oil inlet pipe. The oil outlet pipe is connected to the thin oil tank.

[0008] Preferably, the vibrator is provided with an oil inlet, an oil outlet and an exhaust hole. The oil inlet of the vibrator is connected to the oil inlet pipe. The oil inlet pipe is provided with a flow valve for controlling the amount of oil inlet. The oil outlet of the vibrator is connected to the oil outlet pipe, that is, the thin oil is poured into the vibrator from the oil inlet to lubricate the internal structure and then discharged from the oil outlet. The exhaust hole is used to discharge the air carried by the thin oil when it is poured in.

[0009] Preferably, one end of the heating chamber is connected to the feed port of the electric furnace, the other end of the heating chamber is connected to the sealing cover, and the air outlet is connected to the external fan. When the external fan is working, the air inside the sealing cover is drawn out from the air outlet, and at the same time, the hot air inside the electric furnace is also drawn into the heating chamber by the airflow, thereby heating the scrap steel inside the heating chamber.

[0010] Preferably, the dynamic sealing device is installed at the port of the sealing cover away from the electric furnace. When the dynamic sealing device is in operation, the cold air outside the sealing cover and the hot air inside the sealing cover can be blocked to prevent the hot air from leaking out.

[0011] Preferably, the scrap steel placing bucket and the heating chamber vibrate under the drive of the vibrator. The vibration of the scrap steel placing bucket can shake the scrap steel above onto the horizontal conveyor belt. When the horizontal conveyor belt is working, it transports the scrap steel to the heating chamber for heating. The vibration of the heating chamber can send the heated scrap steel into the electric furnace, wherein the flattening device above the horizontal conveyor belt flattens the scrap steel and the height is lower than the top surface of the heating chamber.

[0012] (III) Beneficial effects

[0013] The utility model provides a thin oil type horizontal feeding scrap steel preheating system, which has the following beneficial effects:

[0014] 1. The thin oil type horizontal feeding scrap steel preheating system, through the setting of the thin oil station, has a good lubrication effect, thereby increasing the life of the equipment and reducing energy loss to achieve the effect of reducing operating costs. The thin oil station is used to pump the thin oil into the parts that need lubrication to achieve lubrication of the equipment. Since the thin oil is in a flowing state and can be cooled in time, it can greatly reduce the wear of the equipment by impurities, and can also greatly reduce the thermal expansion and contraction caused by high temperature and thus reduce friction resistance, thereby increasing the life of the equipment and reducing energy loss to achieve the effect of reducing operating costs.

[0015] 2. The thin oil type horizontal feeding scrap steel preheating system, through the coordinated arrangement of the electric furnace, the heating chamber, the air outlet and the sealing cover, enables the thin oil type horizontal feeding scrap steel preheating system to have the effect of low production cost and low operation cost by drawing out the heat in the electric furnace to preheat the scrap steel through a simple structure. The heating chamber is directly connected to the feed port of the electric furnace and then the hot air in the electric furnace is reversely drawn into the heating chamber through the air outlet, so that the feed port where the heat overflows originally can be directly used for scrap steel preheating. Not only is the structure simple and the production cost low, but the heat traction path is short and the power required is also less, thereby achieving the effect of low production cost and low operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the front view of the utility model.

[0017] In the figure: 1. horizontal conveyor belt; 2. thin oil station; 3. electric furnace; 4. heating chamber; 5. scrap steel placing bucket; 6. vibrator; 7. oil inlet pipe; 8. oil outlet pipe; 9. air outlet; 10. dynamic sealing device; 11. flat material device; 12. sealing cover; 13. flow valve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1The utility model provides a technical solution: a thin oil type horizontal feeding scrap steel preheating system, comprising a horizontal conveyor belt 1 and a thin oil station 2, an electric furnace 3 is installed at one end of the horizontal conveyor belt 1, a heating chamber 4 is arranged above the horizontal conveyor belt 1 near the electric furnace 3, a scrap steel placing bucket 5 is installed above the other end of the horizontal conveyor belt 1, and an exciter 6 is installed below the heating chamber 4 and the scrap steel placing bucket 5. An oil inlet pipe 7 and an oil outlet pipe 8 are arranged between the exciter 6 and the thin oil station 2. The thin oil station 2 is composed of a thin oil tank, a water cooling device and an oil pump. Thin oil is stored in the thin oil tank. The water cooling device is installed at The outlet of the thin oil tank is used to cool the thin oil. When the oil pump is working, the thin oil is drawn out from the outlet of the thin oil tank and poured into the vibrator 6 through the oil inlet pipe 7. The oil outlet pipe 8 is connected to the thin oil tank. The vibrator 6 is provided with an oil inlet, an oil outlet and an exhaust hole. The oil inlet of the vibrator 6 is connected to the oil inlet pipe 7. The oil inlet pipe 7 is provided with a flow valve 13. The flow valve 13 is used to control the oil intake. The oil outlet of the vibrator 6 is connected to the oil outlet pipe 8. That is, the thin oil is poured into the vibrator 6 from the oil inlet to lubricate the internal structure and then discharged from the oil outlet. The exhaust hole is used to discharge the air carried by the thin oil when it is poured in. An air outlet 9, a dynamic sealing device 10 and a flat material device 11 are sequentially installed above the conveyor belt 1 from the heating chamber 4 to the scrap steel placing bucket 5. A sealing cover 12 is arranged above the air outlet 9 and the dynamic sealing device 10. One end of the heating chamber 4 is connected to the feed port of the electric furnace 3, and the other end of the heating chamber 4 is connected to the sealing cover 12. The air outlet 9 is connected to an external fan. When the external fan is working, the air inside the sealing cover 12 is extracted from the air outlet 9. At the same time, the hot air inside the electric furnace 3 is also drawn into the heating chamber 4 by the air flow, thereby heating the scrap steel inside the heating chamber 4. The dynamic sealing device 10 is installed at the port of the sealing cover 12 away from the electric furnace 3. When the dynamic sealing device 10 is working, the cold air outside the sealing cover 12 and the hot air inside can be blocked to prevent the hot air from leaking out. The scrap steel placing bucket 5 and the heating chamber 4 vibrate under the drive of the exciter 6. The vibration of the scrap steel placing bucket 5 can shake the scrap steel above onto the horizontal conveyor belt 1. When the horizontal conveyor belt 1 is working, it transports the scrap steel to the heating chamber 4 for heating. The vibration of the heating chamber 4 can send the heated scrap steel into the electric furnace 3, wherein the flattening device 11 above the horizontal conveyor belt 1 flattens the scrap steel and its height is lower than the top surface of the heating chamber 4.

[0020] During use, the thin oil in the thin oil tank is drawn out from the outlet of the thin oil tank under the drive of the oil pump and poured into the vibrator 6 through the oil inlet pipe 7. In this process, the water cooling device cools the drawn thin oil to reduce the temperature of the thin oil. After the thin oil with low temperature and good fluidity is poured into the vibrator 6, it can not only penetrate into various friction parts in time for lubrication, but also flush out impurities in the parts from the meshing position to reduce the wear of the parts and increase the service life. It can also take away the heat generated by friction to reduce the temperature of the equipment, so that the equipment is fully lubricated and the temperature is reduced, thereby increasing the service life of the equipment and reducing energy loss to achieve the effect of reducing operating costs. The scrap steel is placed in the scrap steel placing bucket 5, and the scrap steel placing bucket 5 is driven by the vibrator 6 to shake the scrap steel onto the horizontal conveyor belt 1 On the top, the scrap steel moves to the side of the electric furnace 3 under the transportation of the horizontal conveyor belt 1. When the scrap steel passes through the flat material device 11, the scrap steel that is higher than the lower end surface of the flat material device 11 will be blocked, and then the higher part will be pushed back under the traction force of the horizontal conveyor belt 1 and the action of the flat material device 11, so that the scrap steel on the horizontal conveyor belt 1 flows into the sealing cover 12 at a height not higher than the top surface of the heating chamber 4, and finally the scrap steel is transported to the heating chamber 4 by the horizontal conveyor belt 1. The heating chamber 4 vibrates the scrap steel above into the electric furnace 3 under the drive of the exciter 6. In this process, the air outlet 9 draws the heat inside the electric furnace 3 outward, so that a high-temperature airflow is formed between the electric furnace 3 and the air outlet 9, and the scrap steel entering the airflow will be heated, and then the scrap steel before flowing into the electric furnace 3 can be preheated.

[0021] To sum up, the thin oil type horizontal feeding scrap steel preheating system pumps thin oil into the parts that need lubrication through the thin oil station 2 to achieve lubrication of the equipment. Since the thin oil is in a flowing state and can be cooled in time, it can greatly reduce the wear of the equipment by impurities, and can also greatly reduce the thermal expansion and contraction caused by high temperature and thus reduce friction resistance, thereby increasing the life of the equipment and reducing energy loss to achieve the effect of reducing operating costs. The heating chamber 4 is directly connected to the feed port of the electric furnace 3, and then the hot air in the electric furnace 3 is reversely drawn into the heating chamber 4 through the air outlet 9, so that the original feed port where heat overflows can be directly used for scrap steel preheating. Not only is the structure simple and the manufacturing cost is low, but the heat traction path is short and the power required is also less, thereby achieving the effects of low manufacturing cost and low operating cost.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thin oil type horizontal feeding scrap steel preheating system, comprising a horizontal conveyor belt (1) and a thin oil station (2), characterized in that: An electric furnace (3) is installed at one end of the horizontal conveyor belt (1), a heating chamber (4) is arranged above the horizontal conveyor belt (1) near the electric furnace (3), a scrap steel placing bucket (5) is installed above the other end of the horizontal conveyor belt (1), a vibrator (6) is installed below both the heating chamber (4) and the scrap steel placing bucket (5), an oil inlet pipe (7) and an oil outlet pipe (8) are arranged between the vibrator (6) and the thin oil station (2), an air outlet (9), a dynamic sealing device (10) and a flat material device (11) are installed in sequence above the horizontal conveyor belt (1) from the heating chamber (4) to the scrap steel placing bucket (5), and a sealing cover (12) is arranged above the air outlet (9) and the dynamic sealing device (10).

2. The thin oil type horizontal feeding scrap steel preheating system according to claim 1 is characterized in that: The thin oil station (2) is composed of a thin oil tank, a water cooling device and an oil pump. Thin oil is stored in the thin oil tank. The water cooling device is installed at the outlet of the thin oil tank to cool the thin oil. When the oil pump is working, the thin oil is drawn out from the outlet of the thin oil tank and poured into the exciter (6) through the oil inlet pipe (7). The oil outlet pipe (8) is connected to the thin oil tank.

3. The thin oil type horizontal feeding scrap steel preheating system according to claim 1 is characterized in that: The vibrator (6) is provided with an oil inlet, an oil outlet and an exhaust hole. The oil inlet of the vibrator (6) is connected to an oil inlet pipe (7). A flow valve (13) is provided on the oil inlet pipe (7). The flow valve (13) is used to control the amount of oil inlet. The oil outlet of the vibrator (6) is connected to an oil outlet pipe (8), that is, thin oil is poured into the vibrator (6) from the oil inlet to lubricate the internal structure and then discharged from the oil outlet. The exhaust hole is used to discharge the air carried by the thin oil when it is poured in.

4. The thin oil type horizontal feeding scrap steel preheating system according to claim 1 is characterized in that: One end of the heating chamber (4) is connected to the feed port of the electric furnace (3), the other end of the heating chamber (4) is connected to the sealing cover (12), and the air outlet (9) is connected to an external fan. When the external fan is in operation, the air inside the sealing cover (12) is drawn out from the air outlet (9), and at the same time, the hot air inside the electric furnace (3) is drawn into the heating chamber (4) by the air flow, thereby heating the scrap steel inside the heating chamber (4).

5. The thin oil type horizontal feeding scrap steel preheating system according to claim 1 is characterized in that: The dynamic sealing device (10) is installed at a port of the sealing cover (12) away from the electric furnace (3). When the dynamic sealing device (10) is in operation, it can block the cold air outside the sealing cover (12) from the hot air inside, thereby preventing the hot air from leaking out.

6. The thin oil type horizontal feeding scrap steel preheating system according to claim 1 is characterized in that: The scrap steel placing bucket (5) and the heating chamber (4) vibrate under the drive of the vibrator (6). The vibration of the scrap steel placing bucket (5) can shake the scrap steel on the top onto the horizontal conveyor belt (1). When the horizontal conveyor belt (1) is in operation, the scrap steel is transported to the heating chamber (4) for heating. The vibration of the heating chamber (4) can transport the heated scrap steel into the electric furnace (3). The flattening device (11) above the horizontal conveyor belt (1) flattens the scrap steel to a height lower than the top surface of the heating chamber (4).

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