Converter feeding device

Abstract

The invention belongs to the technical field of smelting converter equipment, and relates to a converter feeding device. A double-oil-cylinder structure is adopted, a large-size oil cylinder is arranged in a frame, and a small-size oil cylinder is connected between the frame and a discharging pipe. A double-oil-cylinder structure is adopted, the full automation degree of the feeding chute is improved to the maximum degree, the movable range of the discharging pipe is widened, and the flexibility and overall benefits of material transportation are improved. Meanwhile, point location is accurate, the feeding position can be accurately controlled, production efficiency is improved, and energy consumption is reduced. And the included angle between the straight-section discharging pipe and the material conveying system can be increased by rotating the discharging pipe, so that collision friction between materials and the discharging pipe due to gravity is reduced in the material conveying process, and the abrasion degree of the inner wall of the chute is reduced. The chute is simple in overall structure, small in occupied space in the working process, easy to operate and convenient to maintain in the subsequent production process.

Description

Technical Field

[0001] The invention belongs to the technical field of smelting converter equipment, namely a converter charging device. Background Art

[0002] In the prior art, the commonly used charging chutes for converters in the past were fixed charging chutes. Fixed charging chutes are usually installed directly above the converter, and a certain angle design is used to ensure that the materials can smoothly enter the converter. In large converter steelmaking workshops, fixed low-level silos and high-level silos can also be used in combination. The materials are sent to the converter through low-level silos, belt conveyors or elevators to the converter cross-high-level silos for storage, and then added to the converter through vibrating feeders. At the same time, there are also some fixed charging chutes that use gravity to design the charging process, and usually use chutes with larger inclination angles to better achieve the free fall of materials.

[0003] The materials involved in the ferroalloy production process are usually hard and abrasive, which can cause rapid wear of the inner wall of the chute. Especially near the centerline of the lower part of the chute, the wear is particularly severe, and may require frequent replacement or repair, and is not easy to repair. In addition, the uneven particle size of the material or the presence of moisture may cause blockage inside the chute, affecting the normal production process, and may cause equipment damage or require shutdown for cleaning. At the same time, during the feeding process, especially when the material is transported at high speed, dust and other pollutants will be generated. At the same time, during the production process, traditional equipment will burn out a lot, and the feed pipe is prone to flue smoke. If not properly handled, these pollutants will escape into the air, causing environmental pollution and posing a threat to workers' health.

[0004] The main function of the charging chute is to serve as a passage for materials from the storage or processing area to the converter, ensuring that the materials can enter the smelting area smoothly. If the charging chute can be fully automated, it can improve the material transportation efficiency and reduce the wear of the charging chute, while reducing the generation of other pollutants such as dust, and prevent the material from being blocked during transportation in the chute, which can greatly improve the overall efficiency of the material transportation process.

[0005] Therefore, solving the problem of full automation of the charging chute is the key issue for whether the converter equipment can improve the overall efficiency of the material transportation process. Summary of the invention

[0006] The purpose of the present invention is to develop a converter charging device to address the above-mentioned shortcomings, so as to make it more flexible in the material transportation process, thereby improving the overall effect of material transportation.

[0007] The technical solution of the present invention is: a converter charging device, characterized in that it includes a frame, one end of the frame is connected to a large-sized oil cylinder, a feed pipe bracket is fixed on the other end of the frame, a movable feed pipe is installed on the feed pipe bracket, and a small-sized oil cylinder is connected between the frame and the feed pipe.

[0008] The above scheme also includes: The feeding pipe is divided into four sections, namely, a straight feeding pipe, an inclined downward feeding pipe connected to the front end of the straight feeding pipe, a rear inclined downward feeding pipe connected to the rear end of the straight feeding pipe, and a rear inclined downward feeding pipe.

[0009] The small-sized oil cylinder is connected between the frame and the straight section feed pipe.

[0010] A counterweight device is added obliquely to the tail of the lower material tube.

[0011] The advantages of the present invention are: (1) The dual-cylinder structure maximizes the degree of full automation of the feeding chute, enhances the range of motion of the feeding pipe, and improves the flexibility and overall efficiency of material transportation. At the same time, the point position is accurate, and the feeding position can be precisely controlled, which improves production efficiency and reduces energy consumption. In addition, by rotating the feeding pipe, the angle between the straight feeding pipe and the material conveying system can be increased, so that during the material conveying process, the collision friction between the material and the feeding pipe due to gravity is reduced, thereby reducing the wear of the inner wall of the chute.

[0012] (2) The four-stage material discharge pipe structure is adopted to further increase the flexible material transportation function, prevent material backflow, and reduce the escape of dust and other pollutants generated during material transportation.

[0013] (3) The tail counterweight device greatly reduces the pressure on the oil cylinder to maintain a balanced state, while improving the rotation stability and smoothness of the feed pipe. When the feeding chute stops working, it helps the feed pipe to achieve static positioning, reducing safety hazards.

[0014] (4) The overall structure of the chute is simple, takes up little space during operation, is easy to operate, and is convenient for maintenance during subsequent production.

[0015] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present invention.

[0017] Figure 2 This is a simplified diagram of the feed pipe structure.

[0018] Figure 3 This is a schematic diagram of the downward slanting material pipe structure. DETAILED DESCRIPTION

[0019] See also Figure 1-3 The names of the parts are as follows: large-sized oil cylinder 1, safety bracket 2, oil cylinder support 3, frame 4, small-sized oil cylinder 5, feed pipe support 6, straight feed pipe 7, oblique downward feed pipe 8, rear oblique downward feed pipe 9, rear oblique downward feed pipe 10, counterweight device 11, small-sized oil cylinder support for feed pipe 12, feeding chute 13, bearing seat 14, shaft 15, material conveying system 16.

[0020] See also Figure 1-3 A converter charging device adopts a double cylinder structure, a large cylinder 1 is arranged in a frame 4, and the frame 4 has four wheels at the front and rear. The main functions of the frame 4 are first to carry the charging pipe and the charging chute 13, secondly to cooperate with the large cylinder 1 to realize the horizontal movement of the charging chute 13, and thirdly to undertake the feeding pipe bracket 6. The feeding pipe is divided into four sections, namely, including the oblique downward feeding pipe 8, the straight section feeding pipe 7, the rear oblique downward feeding pipe 9 and the rear oblique downward feeding pipe 10 connected in sequence. The small cylinder 5 is connected between the right end of the frame 4 and the feeding pipe, that is, connected to the front end of the straight section feeding pipe 7. The feeding pipe realizes the displacement of the horizontal direction and the vertical rotation (rotation around the axis 15) in the range of the rail, thereby increasing the adjustable space of the feeding chute 13 and the fluidity of the material. The feeding pipe bracket 6 is on the frame 4 with wheels, which can drive the feeding pipe to move horizontally. This device controls the double oil cylinders to achieve horizontal movement and rotation around the axis 15. The feed pipe is divided into four sections and multi-angle welded to form a special-shaped feed pipe, α1 = 260 degrees, α2 = 165 degrees, α3 = 40 degrees, so as to ensure the fluidity of the material and increase the flexibility of material transportation (see Figure 2 ). A counterweight device 11 is added to the tail of the oblique downward feeding pipe 8. The counterweight device 11 is installed 200mm away from the tail of the oblique downward feeding pipe 8. The structure is a round steel plate with a thickness of 20mm and a diameter of 560mm. The round steel plate is connected to the oblique downward feeding pipe 8 by bolts. When it stops working, it can help the feeding pipe maintain a balanced state. When working, it can cooperate with the hydraulic device to improve the rotation stability and smoothness of the feeding pipe. It is also equipped with an anti-backflow device. The anti-backflow device is a round steel plate with a thickness of 4mm and a diameter of 301mm. It is set at 930mm away from the tail of the oblique downward feeding pipe 8. It is welded to form a whole with the oblique downward feeding pipe 8. A bulge is formed on the inner wall of the oblique downward feeding pipe 8, which can prevent the material from flowing back to the frame, and can also effectively reduce the dust and other pollutants generated during the material transportation process. Feeding flow direction: material conveying system 16 → feeding chute 13 → straight section feeding pipe 7 → rear oblique downward feeding pipe 9 → rear oblique downward feeding pipe 10 → sent to the converter. By rotating the feeding pipe, the angle between the straight feeding pipe 7 and the material conveying system 16 can be increased, so that during the material conveying process, the collision friction between the material and the feeding pipe due to gravity is reduced, thereby reducing the wear degree of the inner wall of the feeding chute 13.

[0021] Working principle: In the preparation stage, the large-size oil cylinder 1 and the small-size oil cylinder 5 are both in the retracted state, and the feed pipes are placed in parallel. Figure 1 .

[0022] In the filling stage, the large oil cylinder 1 works to move the feeding chute 13 as a whole horizontally to the specified position through the frame 4. The small oil cylinder 5 works to rotate the feeding pipe around the axis 15 until the rear oblique feeding pipe 10 is aligned with the feed port of the converter, and the converter is connected with the rear oblique feeding pipe 10. After the feeding pipe is prepared, the material is transported into the feeding pipe through the material conveying system 16 and the feeding chute 13, and then the feeding pipe transports the material into the converter.

[0023] At the end stage, when the material in the feeding pipe is completely transported, the small-sized oil cylinder 5 becomes closed, the feeding pipe is kept horizontally placed, and the large-sized oil cylinder 5 becomes closed, and the feeding chute 13 is moved horizontally to the preparation stage position as a whole. The work flow ends here. The reciprocating cycle completes the feeding work of the converter.

[0024] The above description is only a specific implementation mode of the present invention, and various examples do not constitute a limitation on the essential content of the present invention.

Claims

1. A converter charging device, characterized in that The vehicle comprises a frame (4), one end of which is connected to a large-sized oil cylinder (1), a feed pipe bracket (6) is fixed to the other end of the frame (4), a movable feed pipe is installed on the feed pipe bracket (6), and a small-sized oil cylinder (5) is connected between the frame (4) and the feed pipe.

2. A converter charging device according to claim 1, characterized in that The feed pipe is divided into four sections, namely, a straight section feed pipe (7), an inclined downward feed pipe (8) connected to the front end of the straight section feed pipe (7), a rear inclined downward feed pipe (9) connected to the rear end of the straight section feed pipe (7), and a rear inclined downward feed pipe (10).

3. A converter charging device according to claim 2, characterized in that The small-sized oil cylinder (5) is connected between the vehicle frame (4) and the straight section feed pipe (7).

4. A converter charging device according to claim 2, characterized in that A counterweight device is added obliquely to the tail of the lower material pipe (8).

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