Electric furnace inlet feeding device

Abstract

The utility model relates to an electric furnace inlet feeding device which comprises a feeding push plate and a belt conveyor which are arranged front and back, the front end of the belt conveyor is located above the feeding push plate, the front end of the feeding push plate is inserted into an electric furnace inlet, and a cooling cavity is formed in the front end of the feeding push plate. A water inlet and a water outlet which are communicated with the cooling cavity are formed in the rear end of the feeding push plate; the feeding device comprises a feeding push plate and a push plate base, the feeding push plate is fixedly connected to the push plate base, the push plate base is connected to the fixing base in a front-back sliding mode, and the feeding device further comprises a driving mechanism for driving the push plate base to move back and forth in a reciprocating mode. Therefore, long-time stable work of the feeding device is achieved, and the feeding device is suitable for feeding operation of various electric furnaces with side openings.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnaces, in particular to an electric furnace inlet feeding device. Background Art

[0002] In the production process of iron powder, the material (usually scrap iron) is usually first heated into molten iron in an electric furnace, and then auxiliary materials are added to the molten iron. The molten iron is used to generate iron powder through the water mist method. The electric furnace plays the role of heating the material into molten iron.

[0003] Materials are fed into the electric furnace from the inlet. Currently, there are many types of imported feeding device structures. For example, the invention patent with publication number CN109018936A discloses an electric furnace buffer feeding device, which feeds the material into the electric furnace through a conveyor belt. However, the end of the conveyor belt must extend into the electric furnace mouth. The high temperature in the electric furnace for a long time will cause the end of the conveyor belt to melt or be damaged.

[0004] The utility model patent with announcement number CN218764562U discloses a feeding structure for a submerged arc furnace, in which materials are injected from a feeding port at the top of the furnace. However, in order to prevent hot air from flowing upward, current electric furnaces generally have side openings, so the utility model cannot be adapted to existing electric furnaces.

[0005] Therefore, it is necessary to design a feeding device that can transport the material to the inlet on the side of the electric furnace without being melted by the high temperature in the electric furnace. Utility Model Content

[0006] Aiming at the deficiencies of the prior art, the utility model provides an electric furnace inlet feeding device.

[0007] The utility model is realized through the following technical scheme, which provides an electric furnace inlet feeding device, including a feeding push plate and a belt conveyor arranged in front and back, the front end of the belt conveyor is located above the feeding push plate, the front end of the feeding push plate is inserted into the electric furnace inlet, the interior of the front end of the feeding push plate is provided with a cooling cavity, and the rear end of the feeding push plate is provided with a water inlet and a water outlet both connected to the cooling cavity; the feeding push plate is fixedly connected to the push plate base, and the push plate base is slidably connected to the fixed seat front and back, and also includes a driving mechanism for driving the push plate base to move back and forth.

[0008] The material in this solution is transported forward to the feeding push plate through a belt conveyor. The driving mechanism is used to drive the push plate base to move back and forth, thereby driving the feeding push plate to move back and forth. Since the material accumulates on the feeding push plate and can only flow forward, the feeding push plate drives the material to the inlet of the electric furnace when it moves back and forth. Cooling water enters the cooling chamber inside the feeding push plate to cool it, thereby preventing the front end temperature from being too high.

[0009] As an optimization, the feed push plate is a U-shaped plate with a leak-proof baffle fixed to the bottom surface of the U-shaped plate, which is in contact with the lower end of the belt conveyor. The U-shaped plate prevents material from flowing out from both sides, and the leak-proof baffle prevents material from flowing backward from the bottom of the belt conveyor, so that material can only flow forward.

[0010] As an optimization, the drive mechanism includes a spring that drives the push plate base backward and a toggle mechanism that drives the push plate base forward. The toggle mechanism includes a rotating shaft axially connected to a fixed seat, a striker plate fixed to the lower end of the push plate base, and a drive motor that drives the rotating shaft to rotate. A swing arm is fixed to the rotating shaft to toggle the striker plate forward. In this solution, the drive motor drives the rotating shaft to rotate, and the swing arm on the rotating shaft to toggle the striker plate forward, thereby driving the push plate base forward. The swing arm continues to swing forward and then separates from the striker plate. The push plate base moves rapidly backward under the action of the spring, thereby retaining the material at the front end of the feed push plate at the electric furnace inlet. The forward movement driven by the toggle mechanism is slower than the backward movement driven by the spring, thus facilitating the feed push plate to drive the material forward, and the rapid backward movement of the feed push plate causes the material to flow out from the front end.

[0011] As an optimization, a roller is connected to the upper shaft of the swing arm, which reduces the friction between the swing arm and the striker.

[0012] As an optimization, the rotating shaft is lower than the lower end surface of the collision plate.

[0013] As an optimization, a driving gear is fixedly connected to the rotating shaft of the driving motor, and a passive gear meshing with the driving gear is fixedly connected to the rotating shaft. The driving gear and the passive gear play the role of transmission, deceleration and torque increase.

[0014] The beneficial effects of the present invention are as follows: the electric furnace inlet feeding device of the present invention can realize the transportation of materials to the side inlet of the electric furnace and prevent the damage to the feeding device by high temperature, thereby realizing long-term stable operation of the feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of the utility model;

[0016] Figure 2 For this utility model Figure 1 Middle AA plane section view;

[0017] Figure 3 For this utility model Figure 2 Middle BB plane cross-sectional view;

[0018] Figure 4 For this utility model Figure 3 Middle CC section view;

[0019] Figure 5 For this utility model Figure 1 Middle DD section view;

[0020] Figure 6 For this utility model Figure 5 Middle EE plane cross-sectional view;

[0021] As shown in the figure:

[0022] 1. Electric furnace, 2. Belt conveyor, 3. Feed push plate, 4. Electric furnace inlet, 5. Inlet support plate, 6. Push plate base, 7. Slide rail, 8. Fixed seat, 9. Spring, 10. Hose, 11. Water inlet, 12. Water outlet, 13. Cooling chamber, 14. Strike plate, 15. Rotating shaft, 16. Swing arm, 17. Driving gear, 18. Passive gear, 19. Driving motor, 20. Roller, 21. Leakage-proof baffle. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0024] like Figures 1 to 6 As shown, the utility model is an electric furnace inlet feeding device, including a feeding push plate 3 and a belt conveyor 2 arranged at the front and rear. The belt conveyor 2 conveys materials horizontally forward. The feeding push plate 3 is a U-shaped plate, including a horizontal bottom plate and side plates on both sides. The front end of the belt conveyor 2 is located above the feeding push plate 3, specifically, above the bottom plate of the feeding push plate 3 and between the side plates on both sides. The height of the side plate is higher than the upper end surface of the belt conveyor 2, which is used to prevent the material from flowing out from both sides.

[0025] The bottom surface inside the U-shaped plate is fixed with a leak-proof baffle 21 that fits the lower end of the belt conveyor 2. Thereby preventing the material from flowing backward from the bottom of the belt conveyor 2.

[0026] The belt conveyor 2 transports the material to the feeding push plate 3, and the material is transported to the electric furnace inlet 4 by moving the feeding push plate 3 back and forth. The front end of the feeding push plate 3 is inserted into the electric furnace inlet 4. When the feeding push plate 3 moves backward to the rear limit, the front end of the feeding push plate 3 is flush with the electric furnace inlet 4. At this time, the high temperature in the electric furnace 1 has little effect on the feeding push plate 3.

[0027] The front end of the feeding push plate 3 is provided with a cooling chamber 13. Figure 4 As shown, a cooling chamber 13 is provided within the bottom and side panels of the feed push plate 3, providing cooling for both panels. A water inlet 11 and a water outlet 12 are provided at the rear end of the feed push plate 3, both communicating with the cooling chamber 13. The water inlet 11 and the water outlet 12 are provided on the two side panels of the feed push plate 3, respectively, and are connected to hoses, allowing water to flow in and out of the cooling chamber 13.

[0028] like Figure 1 As shown, the feeding push plate 3 is fixed on the push plate base 6, and the push plate base 6 is slidably connected to the fixed seat 8 in the front and rear directions. The upper end surface of the fixed seat 8 is fixed with two slide rails 7 extending forward and backward. The bottom surface of the push plate base 6 is provided with a slide groove adapted to the slide rail 7, thereby realizing the front and rear sliding connection of the push plate base 6.

[0029] The push plate base 6 is also provided with a drive mechanism that drives the push plate base 6 to reciprocate forward and backward. The drive mechanism comprises a spring 9 that drives the push plate base 6 backward and a toggle mechanism that drives the push plate base 6 forward. The spring 9 is positioned in front of the push plate base 6. The front end of the spring 9 presses against a spring baffle, which is fixed to the front end of the fixing base 8. The rear end of the spring 9 presses against the front end of the push plate base 6. The toggle mechanism pushes the push plate base 6 forward at a slower speed than the spring 9 moves the push plate base 6 backward.

[0030] like Figure 5 As shown, the fixed seat 8 is a hollow structure. The toggle mechanism includes a rotating shaft 15 axially connected to the fixed seat 8, a striker plate 14 fixedly connected to the lower end of the push plate base 6, and a drive motor 19 that drives the rotating shaft 15 to rotate. The rotating shaft 15 is located inside the fixed seat 8 and extends left and right. The lower end of the striker plate 14 extends into the fixed seat 8 through an opening at the upper end of the fixed seat 8. A swing arm 16 is fixedly connected to the rotating shaft 15 to toggle the striker plate 14 forward. A roller 20 is axially connected to the swing arm 16. The rotating shaft 15 is lower than the lower end surface of the striker plate 14. Therefore, after the swing arm 16 drives the striker plate 14 to move forward into position, the roller 20 on the swing arm 16 separates from the striker plate 14, and the spring drives the push plate base 6 to move backward. A rear limit can be set at the rear end of the fixed seat 8, and the push plate base 6 stops when it moves backward and hits the rear limit.

[0031] A driving gear 17 is fixedly connected to the rotating shaft of the driving motor 19, and a driven gear 18 is fixedly connected to the rotating shaft 15 and meshes with the driving gear 17. The diameter of the driven gear 18 is larger than that of the driving gear 17, which has the effect of reducing speed and increasing torque.

[0032] The method of using the present invention is as follows: the material is transported forward to the feeding push plate 3 through the belt conveyor 2, and the driving mechanism is used to drive the push plate base 6 to move back and forth, thereby driving the feeding push plate 3 to move back and forth. Since the material is accumulated on the feeding push plate 3 and can only flow forward, the feeding push plate 3 drives the material to the inlet of the electric furnace when it moves back and forth, and cooling water enters the cooling chamber 13 inside the feeding push plate 3 to cool it, thereby preventing the front end temperature from being too high.

[0033] When the driving mechanism is working, the driving motor 19 drives the rotating shaft to rotate, and the swing arm 16 on the rotating shaft drives the impact plate 14 to move forward, thereby driving the push plate base 6 to move forward. The swing arm 16 continues to swing forward and separates from the impact plate 14. The push plate base 6 moves backward quickly under the action of the spring, thereby leaving the material at the front end of the feeding push plate 3 at the inlet of the electric furnace.

[0034] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An electric furnace inlet feeding device, characterized by: The invention comprises a feeding push plate (3) and a belt conveyor (2) arranged at the front and rear, wherein the front end of the belt conveyor (2) is located above the feeding push plate (3), the front end of the feeding push plate (3) is inserted into the electric furnace inlet (4), a cooling cavity (13) is provided inside the front end of the feeding push plate (3), and a water inlet (11) and a water outlet (12) are provided at the rear end of the feeding push plate (3), both of which are connected to the cooling cavity (13); The feeding push plate (3) is fixed on the push plate base (6), and the push plate base (6) is slidably connected to the fixed seat (8) in a front-back direction, and also includes a driving mechanism for driving the push plate base (6) to move back and forth.

2. The electric furnace inlet feeding device according to claim 1, characterized in that: The feeding push plate (3) is a U-shaped plate, and the bottom surface inside the U-shaped plate is fixedly connected to a leak-proof baffle (21) that fits the lower end of the belt conveyor (2).

3. The electric furnace inlet feeding device according to claim 1, characterized in that: The driving mechanism includes a spring (9) for driving the push plate base (6) to move backward and a toggle mechanism for driving the push plate base (6) to move forward, the toggle mechanism includes a rotating shaft (15) axially connected to the fixed seat (8), a striker plate (14) fixed to the lower end of the push plate base (6) and a driving motor (19) for driving the rotating shaft (15) to rotate, and a swing arm (16) for toggling the striker plate (14) to move forward is fixed to the rotating shaft (15).

4. The electric furnace inlet feeding device according to claim 3, characterized in that: The upper shaft of the swing arm (16) is connected to a roller (20).

5. The electric furnace inlet feeding device according to claim 3, characterized in that: The rotating shaft (15) is lower than the lower end surface of the collision plate (14).

6. The electric furnace inlet feeding device according to claim 3, characterized in that: A driving gear (17) is fixedly connected to the rotating shaft of the driving motor (19), and a driven gear (18) meshing with the driving gear (17) is fixedly connected to the rotating shaft (15).

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