Multifunctional furnace mouth blowing gun device for converter

Abstract

The utility model relates to a multifunctional furnace mouth blowing gun device for a converter, which comprises an upper bracket, a lower bracket and a blowing gun trolley, and the lower bracket is arranged below the upper bracket in a foldable manner; a blowing gun trolley is arranged on the lower support, the blowing gun trolley is arranged on the lower support through a bottom plate and is in bilateral symmetry about the lower support, the blowing gun trolley comprises a left blowing gun and a right blowing gun, a left-right swing gun seat is arranged at one end of each blowing gun, and the left-right swing gun seats are connected with a left-right swing electric cylinder and hinged to a connecting plate. One end of the up-and-down swinging gun seat is connected with the blowing gun trolley and passes through a bottom plate, and the other end of the up-and-down swinging gun seat is connected with an up-and-down swinging electric cylinder; the up-down swinging gun base is arranged on the walking guide rail in a sliding mode, the walking guide rail is arranged on the side supporting plates, and the side supporting plates are fixed to the two sides of a bottom plate of the blowing gun trolley. According to the device, the effect of removing the bonded slag at the furnace mouth is greatly improved, the number of workers is reduced, the labor intensity is reduced, burn accidents of workers are greatly reduced, and the safety of the operators is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of converter blowing, in particular to a multifunctional lance device for a converter. Background Art

[0002] Converter blowing is a process in pyrometallurgy, usually carried out in a converter. First, hot metal is added into the converter, and furnace charge is added into the converter and high-pressure high-purity oxygen is injected, so that inclusions in the hot metal react with oxygen to generate oxides insoluble in molten steel, which float on the surface of the molten steel to form slag, and purer metal is obtained.

[0003] During the blowing process of the converter, the boiling sticky slag will adhere to the furnace mouth. The sticky slag in front of and behind the furnace mouth will be removed by self-heating during the process of adding scrap steel, adding hot metal and pouring slag, but the sticky slag on both sides of the furnace mouth is almost impossible to remove. As the sticky slag on both sides of the furnace mouth gradually thickens, the diameter of the converter gradually becomes smaller, which affects the charging of hot metal and scrap steel. If it is not cleaned in time, it will affect production. At present, the sticky slag at the furnace mouth is cleaned by manually holding a steel pipe with oxygen inside for blowing and burning. Because of high-temperature baking and splashing of hot metal, when the oxygen pressure is too small, the blowing and burning effect is not good; when the oxygen pressure is too large, the steel pipe is very difficult to control during blowing and burning and is easy to burn the furnace mouth. Moreover, the working environment is very harsh, there is a safety hazard to the operators, the production efficiency is affected, and the blowing and burning effect is also very unsatisfactory. In addition, due to the influence of the working conditions behind the furnace, no equipment can be added to this furnace, so it is very difficult to improve the converter blowing, which is also a difficult problem that has been difficult to break through in this field. Summary of the Invention

[0004] The purpose of the utility model is to overcome the above deficiencies and provide a multifunctional lance device for a converter, which automatically blows and burns the furnace mouth, sprays materials into the furnace, releases slag blocking balls and measures the temperature and samples the molten steel, greatly improving the production efficiency and the blowing and burning effect of the sticky slag at the furnace mouth.

[0005] The purpose of the utility model is realized as follows:

[0006] A multifunctional lance device for a converter, which comprises an upper support, a lower support and a lance trolley, and the lower support is foldably arranged below the upper support;

[0007] A blow gun carriage is provided on the lower support. The blow gun carriage is arranged on the lower support through a bottom plate and is symmetric about the left and right of the lower support. The blow gun carriage includes two blow guns on the left and right. One end of the blow gun is provided with a left and right swing gun seat. The left and right swing gun seat is connected with a left and right swing electric cylinder. The left and right swing gun seat is hinged on a connecting plate. The upper and lower swing gun seat is also arranged on this connecting plate. One end of the upper and lower swing gun seat is connected to the blow gun carriage through a bottom plate, and the other end is connected with an upper and lower swing electric cylinder; the upper and lower swing gun seat is slidably arranged on a walking guide rail. The walking guide rail is arranged on a side support plate. The side support plates are fixed on both sides of the bottom plate of the blow gun carriage;

[0008] A blow gun walking motor is further provided on the side support plate. The blow gun walking motor is connected to the walking guide rail through a blow gun walking lead screw. By driving the blow gun walking lead screw with the blow gun walking motor, relative movement is formed between the side support plate and the walking guide rail, and the side support plate drives the blow gun to walk.

[0009] Further, a front suspension plate and a rear suspension plate are provided between the upper support and the lower support for connection. The top ends of the front suspension plate and the rear suspension plate are respectively hinged to the upper support, and the bottom ends are respectively hinged to the rear suspension plate, forming a four-bar linkage mechanism.

[0010] Further, a folding electric hoist is provided below the rear end of the upper support. The folding electric hoist is connected to the lower part of the rear suspension plate through an electric hoist chain. An inclination oil cylinder is provided between the electric hoist chain and the rear suspension plate for connection.

[0011] Further, a positioning cylinder is provided on the upper part of the rear suspension plate and connected to the upper support to play a positioning role.

[0012] Further, the blow gun is connected with a blow gun oxygen pipeline.

[0013] Further, a feeding gun is arranged between the two side support plates of the blow gun carriage. The feeding gun is arranged on the lower support through a feeding gun bearing seat. The feeding gun is connected with a feeding gun walking motor. The feeding gun walking motor is arranged on the lower support.

[0014] Further, one end of the feeding gun is provided with a feeding gun metal hose. One end of the feeding gun is provided with two air-cooled inlets and outlets of the feeding gun, which are respectively arranged on the upper and lower sides of the feeding gun metal hose. And a slag blocking ball release cylinder is arranged at this end. The other end of the feeding gun is provided with a slag blocking ball clamping seat for installing the slag blocking ball.

[0015] Further, a lower support adjusting lead screw is respectively arranged in the front, rear, left and right of the lower support for precisely adjusting the position of the lower support.

[0016] Further, a control electric cabinet is provided on one side of the feeding gun bearing seat. The control electric cabinet is arranged on the lower support.

[0017] Furthermore, the upper support is fixed below the secondary dust removal flue behind the converter furnace.

[0018] Compared with the prior art, the present utility model provides a multi-functional furnace mouth blowing gun device for a converter, which has the following beneficial effects:

[0019] When not in use, the present utility model can be folded below the secondary dust removal flue behind the furnace, without occupying space and without affecting the work of the staff behind the furnace and the passage of vehicles. It has strong applicability for the converter blowing scenario. When in use, the lower support is put down, and operations such as blowing the furnace mouth, spraying furnace materials, dropping slag blocking balls, and temperature measurement can be carried out. It serves multiple purposes with one machine, realizing multiple functions while greatly reducing the equipment procurement cost. The present utility model is provided with two blowing guns, which can blow and clean the slag on both sides of the furnace mouth simultaneously, and can be adjusted front-back, left-right, up-down according to the slag sticking situation, greatly improving the effect of removing the slag sticking at the furnace mouth, reducing the number of workers, lowering the labor intensity, greatly reducing the burn accidents of the workers, and improving the safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present utility model.

[0021] Figure 2 It is a schematic structural diagram of the folded state of the present utility model.

[0022] Figure 3 It is a top view of the lower support of the present utility model.

[0023] Figure 4 It is a top view of the blowing gun trolley of the present utility model.

[0024] Wherein:

[0025] upper support 1, lower support 2, front suspension plate 3, rear suspension plate 4, folding electric hoist 5, electric hoist chain 6, positioning cylinder 7, tilt oil cylinder 8, blowing gun trolley 9, side support plate 9.1, walking guide rail 9.2, blowing gun 9.3, blowing gun oxygen pipeline 9.4, left and right swing gun seat 9.5, left and right swing electric cylinder 9.6, up and down swing gun seat 9.7, up and down swing electric cylinder 9.8, blowing gun walking motor 9.9, blowing gun walking lead screw 9.10, feeding gun bearing seat 10, feeding gun 11, feeding gun walking motor 12, feeding gun metal hose 13, feeding gun air-cooling inlet and outlet 14, lower support adjusting lead screw 15, slag blocking ball clamping seat 16, slag blocking ball release cylinder 17, control electric cabinet 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To better understand the technical solution of the present utility model, the following will be described in detail in conjunction with relevant drawings. It should be understood that the following specific embodiments are not intended to limit the specific implementation aspects of the technical solution of the present utility model, but only the implementation aspects that the technical solution of the present utility model can adopt. It should be noted first that the expressions regarding the positional relationships of the components herein, such as component A is located above component B, are based on the relative positions of the components in the drawings and are not intended to limit the actual positional relationships of the components.

[0027] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Embodiment

[0028] See Figures 1-4 , Figure 1 The circuit schematic diagram of a multi-functional lance device for a converter is drawn. As shown in the figure, a multi-functional lance device for a converter of the present utility model includes an upper bracket 1, a lower bracket 2, and a lance trolley 9. A front suspension plate 3 and a rear suspension plate 4 are provided between the upper bracket 1 and the lower bracket 2 for connection. The top ends of the front suspension plate 3 and the rear suspension plate 4 are respectively hinged to the upper bracket 1, and the bottom ends are respectively hinged to the rear suspension plate 4, forming a four-bar linkage mechanism. The upper bracket 1 is fixed below the secondary dedusting flue behind the converter furnace.

[0029] A folding electric hoist 5 is provided below the rear end of the upper bracket 1. The folding electric hoist 5 is connected to the lower part of the rear suspension plate 4 through an electric hoist chain 6. An inclination oil cylinder 8 is provided between the electric hoist chain 6 and the rear suspension plate 4. A positioning cylinder 7 is provided at the upper part of the rear suspension plate 4 and connected to the upper bracket 1 to play a positioning role. Thus, the folding of the four-bar linkage structure caused by the lifting of the folding electric hoist is formed, and it is usually folded below the flue, without affecting other operations of the furnace front workers and the passage of working vehicles.

[0030] The lance trolley 9 is provided on the lower bracket 2. The lance trolley 9 is arranged on the lower bracket 2 through a bottom plate and is symmetric about the left and right of the lower bracket 2. The lance trolley 9 includes two lances 9.3 on the left and right. One end of the lance 9.3 is provided with a left and right swing gun seat 9.5. The left and right swing gun seat 9.5 is connected with a left and right swing electric cylinder 9.6. The left and right swing gun seat 9.5 is hinged on a connecting plate, and an up and down swing gun seat 9.7 is also provided on this connecting plate. One end of the up and down swing gun seat 9.7 is connected to the lance trolley 9 through a bottom plate, and the other end is connected with an up and down swing electric cylinder 9.8. The up and down swing gun seat 9.7 is slidably arranged on a walking guide rail 9.2. The walking guide rail 9.2 is arranged on a side support plate 9.1, and the side support plate 9.1 is fixed on both sides of the bottom plate of the lance trolley 9. The lance 9.3 is connected with a lance oxygen pipeline 9.4.

[0031] A blow gun traveling motor 9.9 is further provided on the side support plate 9.1. The blow gun traveling motor 9.9 is connected to the traveling guide rail 9.2 through a blow gun traveling lead screw 9.10. By driving the blow gun traveling lead screw 9.10 with the blow gun traveling motor 9.9, relative movement is formed between the side support plate 9.1 and the traveling guide rail 9.2, and the side support plate 9.1 drives the blow gun 9.3 to travel.

[0032] A feeding gun 11 is arranged between the two side support plates 9.1 of the blow gun trolley 9. The feeding gun 11 is arranged on the lower support 2 through a feeding gun bearing seat 10. The feeding gun 11 is connected to a feeding gun traveling motor 12, and the feeding gun traveling motor 12 is arranged on the lower support 2; a control electric cabinet 18 is arranged on one side of the feeding gun bearing seat 10, and the control electric cabinet 18 is arranged on the lower support 2.

[0033] One end of the feeding gun 11 is provided with a feeding gun metal hose 13. One end of the feeding gun 11 is provided with two air-cooling inlets and outlets 14 for the feeding gun, which are respectively arranged on the upper and lower sides of the feeding gun metal hose 13, and a slag blocking ball release cylinder 17 is arranged at this end. The other end of the feeding gun 11 is provided with a slag blocking ball clamping seat 16 for installing the slag blocking ball, and the air path of the slag blocking ball release cylinder 17 extends in the feeding gun 11 to the slag blocking ball clamping seat 16.

[0034] One lower support adjusting lead screw 15 is respectively arranged in the front, back, left and right of the lower support 2 for precisely adjusting the position of the lower support 2.

[0035] Working principle:

[0036] The utility model consists of an upper support and a lower support to form a four-bar folding mechanism. The lower support is released by a folding electric hoist, so that the multi-functional gun enters the working state under the action of gravity and is fixed by a positioning cylinder for positioning. The following three functions can be realized:

[0037] 1. If furnace feeding is required, the spraying motor can be started to make the spraying gun (i.e., the feeding gun) move forward into the furnace, and the furnace charge is sprayed into the furnace through the metal hose.

[0038] 2. If slag blocking balls need to be thrown, the slag blocking balls can be installed on the slag blocking ball clamping seat in advance. The spraying gun is advanced to the required position and then the slag blocking balls are put. It is also possible to realize the precise position release of the slag blocking balls by adjusting the left and right adjusting lead screws on the lower support. The spraying gun has an air-cooling system, and the equipment will not be damaged in a short-term high-temperature environment. After the work is completed, the spray gun can be retracted.

[0039] 3. Furnace mouth blow guns are installed on both sides of the lower support. The furnace mouth blow guns can be adjusted in the front, back, up, down, left and right directions to achieve precise positioning, so as to reach the position where the slag adhered to the furnace mouth needs to be blown. Oxygen is ejected from the blow gun to blow and remove the slag adhered to the furnace mouth. After the work is completed, each mechanism automatically returns to its original position.

[0040] The blow gun device of the present utility model is usually folded under the flue, which does not affect the other operations of the furnace front workers and the passage of the working vehicle. When in use, the bracket is put down, and operations such as blowing the furnace mouth, spraying furnace charge, putting slag blocking balls, and temperature measurement and sampling can be carried out. Two blow guns are installed on both sides of the bracket, which can simultaneously blow and clean the slag on both sides of the furnace mouth, and can be adjusted back and forth, left and right, up and down according to the slag sticking situation to achieve better effects. Wheels and a spraying gun are also installed on the bracket. The spraying gun can move back and forth, left and right, up and down. Its function is to spray materials into the furnace and release slag blocking balls.

[0041] The above are only specific application examples of the present utility model, which do not constitute any limitation to the protection scope of the present utility model. All technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the rights protection of the present utility model.

Claims

1. A multifunctional furnace mouth blowing gun device for a converter, characterized in that: It comprises an upper bracket (1), a lower bracket (2) and a blow gun trolley (9), wherein the lower bracket (2) is foldably arranged below the upper bracket (1); The lower bracket (2) is provided with a blow gun trolley (9), the blow gun trolley (9) is arranged on the lower bracket (2) via a bottom plate, and is symmetrical with respect to the lower bracket (2). The blow gun trolley (9) comprises two left and right blow guns (9.3), one end of the blow gun (9.3) is provided with a left-right swinging gun seat (9.5), the left-right swinging gun seat (9.5) is connected to a left-right swinging electric cylinder (9.6), the left-right swinging gun seat (9.5) is hinged on a connecting plate, and an up-and-down swinging gun seat (9.7) is also arranged on the connecting plate, one end of the up-and-down swinging gun seat (9.7) is connected to the blow gun trolley (9) via a bottom plate, and the other end is connected to an up-and-down swinging electric cylinder (9.8); the up-and-down swinging gun seat (9.7) is slidably arranged on a walking guide rail (9.2), the walking guide rail (9.2) is arranged on a side support plate (9.1), and the side support plate (9.1) is fixed on both sides of the bottom plate of the blow gun trolley (9); The side support plate (9.1) is also provided with a blow gun travel motor (9.9), and the blow gun travel motor (9.9) is connected to the travel guide rail (9.2) via the blow gun travel screw rod (9.10). The blow gun travel motor (9.9) drives the blow gun travel screw rod (9.10), so that the side support plate (9.1) and the travel guide rail (9.2) form relative movement, and the side support plate (9.1) drives the blow gun (9.3) to travel.

2. A multifunctional furnace mouth blowing gun device for a converter according to claim 1, characterized in that: A front hanging plate (3) and a rear hanging plate (4) are provided between the upper bracket (1) and the lower bracket (2) for connection; the top ends of the front hanging plate (3) and the rear hanging plate (4) are respectively hinged to the upper bracket (1), and the bottom ends are respectively hinged to the rear hanging plate (4), forming a four-bar linkage.

3. The multifunctional furnace mouth blowing gun device for converter according to claim 1, characterized in that: A folding electric hoist (5) is provided below the rear end of the upper bracket (1); the folding electric hoist (5) is connected to the lower part of the rear hanging plate (4) via an electric hoist chain (6); and a tilt cylinder (8) is provided between the electric hoist chain (6) and the rear hanging plate (4).

4. A multifunctional furnace mouth blowing gun device for a converter according to claim 2, characterized in that: The upper part of the rear hanging plate (4) is provided with a positioning cylinder (7) connected to the upper bracket (1) to play a positioning role.

5. The multifunctional furnace mouth blowing gun device for converter according to claim 1, characterized in that: The blow gun (9.3) is connected to a blow gun oxygen pipeline (9.4).

6. The multifunctional furnace mouth blowing gun device for converter according to claim 1, characterized in that: A feeding gun (11) is arranged between the two side support plates (9.1) of the blowing gun trolley (9); the feeding gun (11) is arranged on the lower bracket (2) via a feeding gun bearing seat (10); the feeding gun (11) is connected to a feeding gun travel motor (12); and the feeding gun travel motor (12) is arranged on the lower bracket (2).

7. A multifunctional furnace mouth blowing gun device for a converter according to claim 6, characterized in that: A feeding gun metal hose (13) is provided at one end of the feeding gun (11), and two feeding gun air cooling inlets (14) are provided at one end of the feeding gun (11), which are respectively arranged on the upper and lower sides of the feeding gun metal hose (13), and a slag ball release cylinder (17) is provided at this end, and a slag ball clamping seat (16) is provided at the other end of the feeding gun (11) for installing the slag ball.

8. The multifunctional furnace mouth blowing gun device for converter according to claim 1, characterized in that: A lower bracket adjusting screw screw (15) is respectively provided at the front, rear, left and right sides of the lower bracket (2) for accurately adjusting the position of the lower bracket (2).

9. The multifunctional furnace mouth blowing gun device for converter according to claim 6, characterized in that: A control electric cabinet (18) is provided on one side of the charging gun bearing seat (10), and the control electric cabinet (18) is arranged on the lower bracket (2).

10. The multifunctional furnace mouth blowing gun device for converter according to claim 1, characterized in that: The upper bracket (1) is fixed below the secondary dust removal flue behind the converter furnace.

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