Auxiliary wire feeding device

Abstract

The utility model relates to an auxiliary wire feeding device, which comprises a cross beam, a chiseling head, at least one chiseling body and a connecting piece, a groove is arranged on the cross beam, the cross beam is fixedly connected with the chiseling body through the connecting piece, the bottom end of the chiseling body is fixedly connected with the chiseling head, the connecting piece comprises a connecting rod and a fixing seat, the top end of the connecting rod is fixedly connected with the cross beam, and the fixing seat is fixedly connected with the connecting rod. The bottom end of the connecting rod is fixedly connected with the fixing base, and the chisel body is fixedly connected with the fixing base. The device has the advantages that the structure is simple and reasonable, the operation is convenient, the problem that wire feeding cannot be performed due to the fact that a slag layer on the surface of steel slag is too thick is solved, the device can be hoisted to the position above molten steel in a hoisting mode, refining LF and vacuum RH slag surfaces are broken through the chisel head, the whole chisel body can extend into the molten steel, and cored wires, calcium wires or aluminum wires can be smoothly fed.

Description

Technical Field

[0001] The utility model belongs to the field of steel refining, and particularly relates to an auxiliary wire feeding device. Background Art

[0002] Wire feeding is an important link in the refining process of the LF furnace (LADLE FURNACE), that is, the ladle refining furnace. By feeding wires such as cored wires, calcium wires or aluminum wires quickly into the deep part of the molten steel, the purposes of fine-tuning the composition, modifying inclusions, deoxidizing, etc. are achieved. Generally, in the wire feeding process, the clamping wheel of the wire feeding machine clamps the cored wire, calcium wire or aluminum wire and rotates at a high speed, so that the cored wire, calcium wire or aluminum wire is ejected horizontally at a relatively high speed, and then is fed into the molten steel through the wire feeding elbow and the wire feeding conduit. Most of the existing wire feeding conduits are fixed on the water-cooled furnace cover or on the wire feeding machine platform, and the wire feeding effect is poor; in order to achieve an ideal wire feeding effect, the wire feeding conduit will extend into the water-cooled furnace cover, and the wire feeding conduit will be damaged by high temperature and blocked by slag splashing during the refining process of the molten steel, affecting the normal wire feeding operation, and it takes 10 - 20 minutes to replace the wire feeding conduit, and the replacement time is relatively long. In addition, the environment temperature is high and the environment is harsh when replacing the wire feeding conduit.

[0003] During the wire feeding process in LF or RH, not only is the wire feeding conduit damaged by high temperature and blocked by slag splashing during the refining or vacuum pumping process of the molten steel, but also the situation may occur that due to poor permeability of the ladle, sticky slag, too thick slag layer, etc., the cored wire, calcium wire or aluminum wire floats on the surface of the slag layer and cannot enter the interior of the molten steel when feeding wires.

[0004] In the prior art, the patent with the patent application number CN201720683836.5 discloses an LF furnace lifting type wire feeding device including a wire feeding elbow. The wire feeding elbow is fixed on the wire feeding platform, and a wire feeding conduit is sleeved on the vertical section of the wire feeding elbow. The wire feeding conduit slides up and down along the vertical section of the wire feeding elbow through a lifting mechanism connected to the wire feeding conduit, so that the descending position of the wire feeding conduit can be flexibly adjusted according to the molten steel level in the furnace at any time, ensuring that the distance between the lower end of the wire feeding conduit and the molten steel level meets the process requirements, and avoiding the high-temperature damage and slag splashing blockage suffered by the wire feeding conduit during the refining process of the molten steel. However, since there is a certain distance between the lower end of the wire feeding conduit and the molten steel level, there is a situation where the cored wire, calcium wire or aluminum wire floats on the surface of the slag layer and cannot enter the interior of the molten steel. Summary of the Invention

[0005] The purpose of the utility model is to provide an auxiliary wire feeding device, which can break through the slag layer, effectively avoid the cored wire, calcium wire or aluminum wire floating on the surface of the slag layer when feeding wires, and improve the wire feeding efficiency.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0007] An auxiliary wire feeding device includes a cross beam, a chiseling head, a chisel body, and a connecting member. There is a groove on the cross beam. The cross beam is fixedly connected to the chisel body through the connecting member, and the bottom end of the chisel body is fixedly connected to the chiseling head. There is at least 1 chisel body. The connecting member includes a connecting rod and a fixing seat. The top end of the connecting rod is fixedly connected to the cross beam, the bottom end of the connecting rod is fixedly connected to the fixing seat, and the chisel body is fixedly connected to the fixing seat.

[0008] The bottom end of the chiseling head is a pointed structure, a tubular structure, or a hammer-shaped structure.

[0009] Grooves are opened at the bottoms of both ends of the cross beam.

[0010] The fixing seat is a disc structure.

[0011] The chisel bodies are evenly distributed along the radial direction of the fixing seat.

[0012] The fixing seat and the chisel body are fixedly connected by bolts.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The structure of the present utility model is simple and reasonable, and the operation is convenient. It solves the problem that wire feeding is impossible due to too thick slag layer on the surface of steel slag. The device can be hoisted above the molten steel, and the slag surface of refining LF and vacuum RH can be broken through by the chiseling head, so that the whole chisel body can extend into the molten steel, and the cored wire, calcium wire, or aluminum wire can be smoothly fed.

[0015] 2. During the operation of the present utility model, manual operation is reduced, and personal injury caused by splashing slag during the wire feeding process is avoided.

[0016] 3. The chisel body and the cross beam of the present utility model are connected by connecting members such as bolts, which is convenient for replacing the chisel body on site and improves the operation efficiency. Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present utility model.

[0018] Figure 2 is the connection schematic diagram of the chisel body and the connecting member.

[0019] Figure 3 is the structural schematic of the chisel body Figure 1 .

[0020] Figure 4 is the structural schematic of the chisel body Figure 2 .

[0021] Figure 5 is the structural schematic of the chisel body Figure 3 .

[0022] Figure 6It is a schematic diagram of the connection between the chiseling body and the fixed seat.

[0023] Figure 7 It is Figure 6 the bottom view of.

[0024] Figure 8 It is the structural schematic of Embodiment 3 Figure 1 .

[0025] Figure 9 It is the structural schematic of Embodiment 3 Figure 2 .

[0026] Figure 10 It is the structural schematic diagram of the on-site modification example.

[0027] In the figure: 1 - cross beam, 2 - connecting piece, 3 - chiseling body, 4 - chiseling head, 5, 6 - grooves, 7 - bolt, 8 - nut, 9 - wire feeding machine, 10 - wire feeding conduit, 11 - cored wire, calcium wire or aluminum wire, 21 - connecting rod, 22 - fixed seat. Specific implementation mode

[0028] The present utility model will be described in detail below in conjunction with the accompanying drawings of the specification, but it should be pointed out that the implementation of the present utility model is not limited to the following embodiments.

[0029] Embodiment 1

[0030] See Figure 1 - Figure 2 , an auxiliary wire feeding device, including a cross beam 1, a chiseling head 4, a chiseling body 3, and a connecting piece 2. Grooves 5 and 6 are formed on the cross beam 1. The cross beam 1 is fixedly connected to the chiseling body 3 through the connecting piece 2. The bottom end of the chiseling body 3 is fixedly connected to the chiseling head 4. There is at least 1 chiseling body 3. The connecting piece 2 includes a connecting rod 21 and a fixed seat 22. The top end of the connecting rod 21 is fixedly connected to the cross beam 1, the bottom end of the connecting rod 21 is fixedly connected to the fixed seat 22, and the chiseling body 3 is fixedly connected to the fixed seat 22.

[0031] See Figure 3 - Figure 5 , the chiseling head 4 and the chiseling body 3 are of an integral structure. The bottom end of the chiseling head 4 is of a pointed structure, and the included angle of the pointed structure is less than 45 degrees, which can better break the slag layer. To prevent wear, the bottom end of the chiseling head 4 is of a hammer-shaped structure. However, when using the hammer-shaped structure to break the slag layer, due to the excessive acting force, the molten steel is likely to overflow. The chiseling head 4 and the chiseling body 3 as a whole can adopt a tubular structure. The chiseling body 3 and the chiseling head 4 are made of cast iron (or other alloys that are not easily melted by molten steel) to prevent the molten steel from melting quickly due to too high temperature.

[0032] The penetration depth of the chiseling body 3 should not be too large, and the damaged area of the slag surface should not be too large to prevent the molten steel from being exposed.

[0033] The crossbeam 1 can be directly hoisted by the clamp, which lowers the crossbeam 1 and applies a downward pressure to the crossbeam 1, pressing the crossbeam 1 toward the slag layer. Figure 1 There are grooves 5 and 6 at the bottom of both ends of the beam 1 to prevent slipping and to limit the hook position when the device is hoisted as a whole.

[0034] When the auxiliary wire feeding device is in use, the lifting equipment hooks or clamps the crossbeam 1 to lift the device above the molten steel. Pressure is applied to the crossbeam 1 or under the action of the gravity of the device itself, the chisel head 4 is struck to break the refined LF and vacuum RH slag surfaces. The chisel body 3 is slightly inserted into the molten steel to prevent the molten steel from leaking, so that the cored wire, calcium wire or aluminum wire 11 can be fed smoothly.

[0035] Example 2

[0036] The difference from Example 1 is that Figure 1 、 Figure 2 The fixed seat 22 is a disc structure, and its outer diameter is not less than the length of the crossbeam 1, to ensure that the auxiliary wire feeding device is at the edge of the ladle when it falls and will not be stuck outside the ladle. The chisel body 3 is evenly distributed along the radial direction of the fixed seat 22. The fixed seat 22 and the chisel body 3 can be fixed by welding. Figure 6 、 Figure 7 To facilitate replacement, the fixing base 22 and the chisel body 3 are also fixedly connected by bolts 7 and nuts 8. The chisel head 4 and chisel body 3 can be replaced at any time after being damaged. This facilitates on-site repairs and improves the economic efficiency of the device. To better penetrate the slag layer, the chisel body 3 located at the edge is slightly longer than the chisel body 3 located in the middle.

[0037] Example 3

[0038] See Figure 8 The crossbeam 1 is fixedly connected to the chisel body 3 by fasteners such as bolts 7 and nuts 8. The chisel body 3 and the chisel head 4 are an integrated structure, and the chisel body 3 is 1. The bottom end of the chisel head 4 is a pointed structure. Figure 9 , the bottom end of the striking head 4 can also be a hammer-shaped structure.

[0039] See Figure 10 This is a movable wire feeding device for LF or RH furnaces. To facilitate on-site modification, the chisel head 4 and chisel body 3 are made of cast iron pipe (or other alloys that are not easily melted by molten steel). The cast iron pipe is directly connected to the end of the wire feeding guide tube 10 at the front end of the wire feeder 9 with bolts 7. The slag layer is flushed away by the moving impact of the wire feeder 9 and the cast iron pipe. The aperture of the cast iron pipe is much larger than that of the wire feeding guide tube 10. The cast iron pipe can move with the wire feeding guide tube 10. When the slag layer on the liquid surface needs to be broken, the wire feeder body is moved to flush the slag layer through the cast iron pipe connected to the wire feeding guide tube 10. The cored wire, calcium wire or aluminum wire 11 is fed into the molten steel along the wire feeding guide tube 10 and the cast iron pipe.

[0040] Advantages of this utility model:

[0041] 1. The structure is simple and reasonable, and the operation is convenient. It solves the problem that wire feeding cannot be carried out due to the too thick slag layer on the surface of the steel slag. The device can be hoisted above the molten steel, and the slag surface of the refining LF and vacuum RH can be broken through by chiseling the head, so that the whole chiseling body can extend into the molten steel, and the cored wire, calcium wire or aluminum wire can be fed smoothly.

[0042] 2. During operation, manual operation is reduced, avoiding personal injury caused by slag splashing during wire feeding.

[0043] 3. The chiseling body and the cross beam are connected by connectors such as bolts, which is convenient for replacing the chiseling body on site and improving the operation efficiency.

[0044] 4. By fixedly sleeving the cast iron pipe on the wire feeding conduit 10, the wire feeding conduit can move up and down, and can flexibly adjust the descending position of the wire feeding conduit 10 according to the molten steel level in the furnace at any time, ensuring that the distance between the lower end of the wire feeding conduit 10 and the molten steel surface meets the process requirements, avoiding high-temperature burning damage and slag splashing blockage suffered by the wire feeding conduit 10 during the refining process of molten steel, and being convenient to use, simple to maintain, and having a stable wire feeding effect.

[0045] Through the above specific implementation manners, those skilled in the art can easily implement the present utility model. However, it should be understood that the present utility model is not limited to the above specific implementation manners. Based on the disclosed implementation manners, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions. Due to space limitations and to make the specification concise, the various solutions formed by these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary wire feeding device, characterized in that, It includes a cross beam, a chiseling head, a chisel body, and a connecting member. The cross beam is fixedly connected to the chisel body through the connecting member, and the bottom end of the chisel body is fixedly connected to the chiseling head. There is at least one chisel body.

2. The auxiliary wire feeding device according to claim 1, wherein The connecting member includes a connecting rod and a fixing seat. The top end of the connecting rod is fixedly connected to the cross beam, the bottom end of the connecting rod is fixedly connected to the fixing seat, and the chisel body is fixedly connected to the fixing seat.

3. An auxiliary wire feeding device according to claim 2, characterized in that, The fixing seat is of a disc structure.

4. An auxiliary wire feeding device according to claim 3, characterized in that, The chisel bodies are evenly distributed along the radial direction of the fixing seat.

5. An auxiliary wire feeding device according to claim 2, characterized in that, The fixing seat and the chisel body are fixedly connected by bolts.

6. An auxiliary wire feeding device according to claim 1, characterized in that The bottom end of the chiseling head is of a pointed structure, a tubular structure or a hammer-like structure.

7. An auxiliary wire feeding device according to claim 1, characterized in that, Grooves are formed at the bottoms of both ends of the cross beam.

8. An auxiliary wire feeding device according to claim 1, characterized in that, The connecting member is a bolt.

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