Crystallizer casting powder feeding device for producing low-expansion-coefficient steel

Abstract

The utility model belongs to the technical field of crystallizer casting powder, particularly relates to a crystallizer casting powder feeding device for producing low-expansion-coefficient steel, and provides the following scheme aiming at the problems of large danger coefficient and non-uniform feeding of manual feeding in the background technology: the crystallizer casting powder feeding device comprises a bottom plate, and a slag storage frame is fixedly connected with the inner wall of the bottom plate; a fixing base is fixedly connected to the inner wall of the bottom of the slag storage frame, a slag suction pipe is fixedly connected to the inner wall of the fixing base, and an air blower is installed on the outer wall of one end of the slag suction pipe. When slag is added, casting powder can be sucked into the slag storage cylinder through the air blower, manual feeding is not needed, operators can be liberated from a high-temperature environment, the safety coefficient is high, the casting powder can be continuously and uniformly added into the slag gate opening of the crystallizer through the slag discharging groove at a certain speed and proportion, and the casting powder can be recycled. And the machine can continuously work for 24 hours in a full-automatic manner in a high-temperature environment, so that the quality of steel is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold protection slag, in particular to a mold protection slag feeding device for producing low expansion coefficient steel. Background Art

[0002] Mold protection slag is placed on the surface of the molten steel in the mold during continuous steel casting to keep warm, prevent oxidation and absorb non-metallic inclusions. Mold protection slag has five major barrier functions during continuous casting: it isolates the contact between air and molten steel, blocks the secondary oxidation of molten steel, blocks the contact between the carbon-rich layer and molten steel, avoids carbon increase on the surface of the ingot, improves the surface quality of the ingot, and reduces steel loss.

[0003] After searching, the patent (application number: 202120851468.7) discloses a "crystallizer protection slag mobile storage and loading device". The device provides a crystallizer protection slag mobile storage and loading device. The operator pushes the body frame with the slag storage box to the crystallizer, and a large amount of protection slag can be transported at one time. The operator does not need to carry bags from the warehouse, which improves the slag adding efficiency and liberates labor. However, the device has the following problems in actual operation:

[0004] According to the instructions in the comparative document, although the protective slag can be stored in the slag box, in the actual loading process, the staff still need to push the car body to pour the protective slag into the feeding port of the crystallizer. In this process, even if tools are used, the staff need to be close to the molten steel. The heat radiation near the molten steel is as high as 60℃ to 80℃. The staff can generally only work for about two hours. The risk factor is high, and the slag inclusion process requires a high level of experience and skills from the workers. The speed and proportion of slag inclusion will affect the quality of the billet. The manual feeding method is difficult and has problems such as uneven feeding. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a crystallizer protection slag feeding device for producing low expansion coefficient steel, which overcomes the deficiencies of the prior art and effectively solves the problems of high risk factor and uneven feeding of manual feeding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A crystallizer protection slag feeding device for producing low expansion coefficient steel comprises a bottom plate, a slag storage frame is fixedly connected to the inner wall of the bottom plate, a fixing seat is fixedly connected to the inner wall of the bottom of the slag storage frame, a slag suction pipe is fixedly connected to the inner wall of the fixing seat, a blower is installed on the outer wall of one end of the slag suction pipe, and a discharge port of the blower is connected to a slag storage cylinder through the slag suction pipe;

[0008] A screw conveyor is welded to the bottom outer wall of the slag storage barrel, and a slag discharge groove is opened on the outer wall of one end of the screw conveyor, a top plate is provided on the bottom outer wall of the slag storage barrel, and a first electric guide rail is installed on the bottom outer wall of the top plate, a connecting plate is fixedly connected to the bottom outer wall of the first electric guide rail, and a second electric guide rail is installed on the bottom outer wall of the connecting plate.

[0009] Preferably, a cover plate is hingedly connected to the top outer wall of the slag storage frame, and a handle is welded to the top outer wall of the cover plate.

[0010] Preferably, a clamp is fixedly connected to the outer wall of one side of the top plate, and the slag suction pipe is penetrated and arranged on the inner wall of the clamp.

[0011] Preferably, a guide rod is fixedly connected to the top outer wall of the bottom plate, and the guide rod is slidably connected to the bottom inner wall of the connecting plate.

[0012] Preferably, a support frame is welded to the outer wall of the top of the roof, and the slag storage barrel is fixedly connected to the inner wall of the support frame.

[0013] Preferably, a dust removal bag is fixedly connected to the outer wall of the slag storage barrel.

[0014] Preferably, a crystallizer slag gate port is provided on the top outer wall of the bottom plate, and a slag discharge trough is provided on the top of the crystallizer slag gate port.

[0015] The beneficial effects of the utility model are:

[0016] 1. The mold protection slag feeding device designed for producing low expansion coefficient steel can store the protection slag in advance in a slag storage frame far away from the slag gate of the crystallizer. When adding slag, the protection slag can be sucked into the slag storage cylinder by a blower. There is no need for manual feeding, which can free the operator from the high temperature environment and has a high safety factor.

[0017] 2. The mold protective slag feeding device designed for producing low expansion coefficient steel drives the slag storage barrel to adjust the position back and forth through the first electric guide rail and the second electric guide rail. Under the operation of the screw conveyor, the protective slag can be continuously and evenly added to the slag gate of the crystallizer through the slag discharge chute at a certain speed and proportion. The machine can work fully automatically 24 hours a day under high temperature environment, which is beneficial to improving the quality of steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a mold protection slag feeding device for producing low expansion coefficient steel proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the slag storage frame connection structure of a crystallizer protection slag feeding device for producing low expansion coefficient steel proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of the connection structure of a slag storage cylinder of a crystallizer protection slag feeding device for producing low expansion coefficient steel.

[0021] In the figure: 1. bottom plate; 2. slag storage frame; 3. fixed seat; 4. slag suction pipe; 5. blower; 6. slag storage barrel; 7. screw conveyor; 8. slag discharge chute; 9. top plate; 10. first electric guide rail; 11. connecting plate; 12. second electric guide rail; 13. cover plate; 14. clamp; 15. guide rod; 16. support frame; 17. dust removal bag; 18. crystallizer slag gate. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1, refer to Figures 1 to 3 A crystallizer protective slag feeding device for producing low expansion coefficient steel includes a bottom plate 1, a slag storage frame 2 is fixedly connected to the inner wall of the bottom plate 1, and a fixing seat 3 is fixedly connected to the inner wall of the bottom of the slag storage frame 2, a slag suction pipe 4 is fixedly connected to the inner wall of the fixing seat 3, and a blower 5 is installed on the outer wall of one end of the slag suction pipe 4, and the discharge port of the blower 5 is connected to the slag storage barrel 6 through the slag suction pipe 4.

[0024] In this embodiment, the protective slag can be pre-stored in a slag storage frame 2 far away from the crystallizer slag gate port 18. When adding slag, the protective slag can be sucked into the slag storage tube 6 by the blower 5. No manual loading is required, which can free the operator from the high temperature environment and has a high safety factor.

[0025] Example 2, refer to Figure 3 A crystallizer protective slag feeding device for producing low expansion coefficient steel, a screw conveyor 7 is welded to the bottom outer wall of the slag storage barrel 6, and a slag discharge groove 8 is opened on the outer wall of one end of the screw conveyor 7, a top plate 9 is arranged on the bottom outer wall of the slag storage barrel 6, and a first electric guide rail 10 is installed on the bottom outer wall of the top plate 9, a connecting plate 11 is fixedly connected to the bottom outer wall of the first electric guide rail 10, and a second electric guide rail 12 is installed on the bottom outer wall of the connecting plate 11.

[0026] In this embodiment, the slag storage barrel 6 is driven to adjust its position back and forth by the first electric guide rail 10 and the second electric guide rail 12. Under the operation of the screw conveyor 7, the protective slag can be continuously and evenly added to the crystallizer slag gate port 18 through the slag discharge chute 8 at a certain speed and proportion. The machine can work fully automatically 24 hours a day in a high temperature environment, which is beneficial to improving the quality of steel.

[0027] Reference Figure 1A cover plate 13 is hinged on the top outer wall of the slag storage frame 2, and a handle is welded on the top outer wall of the cover plate 13.

[0028] Reference Figure 1 A hoop 14 is fixedly connected to the outer wall of one side of the top plate 9 , and the slag suction pipe 4 is penetrated and arranged on the inner wall of the hoop 14 .

[0029] Reference Figure 1 A guide rod 15 is fixedly connected to the top outer wall of the bottom plate 1, and the guide rod 15 is slidably connected to the bottom inner wall of the connecting plate 11.

[0030] Reference Figure 1 A support frame 16 is welded to the top outer wall of the top plate 9 , and the slag storage barrel 6 is fixedly connected to the inner wall of the support frame 16 .

[0031] Reference Figure 1 A dust removal bag 17 is fixedly connected to the outer wall of the slag storage tube 6.

[0032] Reference Figure 1 A crystallizer slag gate port 18 is provided on the top outer wall of the bottom plate 1 , and a slag discharge trough 8 is provided on the top of the crystallizer slag gate port 18 .

[0033] Working principle: After opening the cover 13, the protective slag can be poured into the slag storage frame 2 which is far away from the crystallizer slag gate port 18. When adding slag, start the blower 5 to suck the protective slag into the slag storage barrel 6. The process can be ventilated through the dust removal bag 17 to ensure that the air pressure inside the slag storage barrel 6 is stable. The protective slag will fall into the screw conveyor 7 along the slag storage barrel 6, and the slag storage barrel 6 will be driven to adjust its position back and forth through the first electric guide rail 10 and the second electric guide rail 12. The protective slag can be continuously added to the crystallizer slag gate port 18 through the slag discharge trough 8 at a certain speed and proportion.

[0034] 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 mold slag feeding device for producing low expansion coefficient steel, comprising a bottom plate (1), characterized in that: The inner wall of the bottom plate (1) is fixedly connected to a slag storage frame (2), and the inner wall of the bottom of the slag storage frame (2) is fixedly connected to a fixing seat (3), the inner wall of the fixing seat (3) is fixedly connected to a slag suction pipe (4), and a blower (5) is installed on the outer wall of one end of the slag suction pipe (4), and the discharge port of the blower (5) is connected to a slag storage cylinder (6) via the slag suction pipe (4); A screw conveyor (7) is welded to the outer wall of the bottom of the slag storage barrel (6), and a slag discharge groove (8) is provided on the outer wall of one end of the screw conveyor (7); a top plate (9) is provided on the outer wall of the bottom of the slag storage barrel (6), and a first electric guide rail (10) is installed on the outer wall of the bottom of the top plate (9); a connecting plate (11) is fixedly connected to the outer wall of the bottom of the first electric guide rail (10), and a second electric guide rail (12) is installed on the outer wall of the bottom of the connecting plate (11).

2. The device for feeding mold powder for producing low expansion coefficient steel according to claim 1, characterized in that: A cover plate (13) is hingedly connected to the top outer wall of the slag storage frame (2), and a handle is welded to the top outer wall of the cover plate (13).

3. The device for feeding mold powder for producing low expansion coefficient steel according to claim 1, characterized in that: A hoop (14) is fixedly connected to the outer wall of one side of the top plate (9), and a slag suction pipe (4) is arranged through the inner wall of the hoop (14).

4. The device for feeding mold powder for producing low expansion coefficient steel according to claim 1, characterized in that: A guide rod (15) is fixedly connected to the top outer wall of the bottom plate (1), and the guide rod (15) is slidably connected to the bottom inner wall of the connecting plate (11).

5. The device for feeding mold powder for producing low expansion coefficient steel according to claim 1, characterized in that: A support frame (16) is welded to the top outer wall of the top plate (9), and the slag storage barrel (6) is fixedly connected to the inner wall of the support frame (16).

6. A mold powder feeding device for producing low expansion coefficient steel according to claim 1, characterized in that: A dust removal bag (17) is fixedly connected to the outer wall of the slag storage cylinder (6).

7. A mold powder feeding device for producing low expansion coefficient steel according to claim 1, characterized in that: A crystallizer slag gate opening (18) is provided on the top outer wall of the bottom plate (1), and a slag discharge trough (8) is provided on the top of the crystallizer slag gate opening (18).

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