Converter sublance with sublance lifting structure

Abstract

The utility model relates to the technical field of converter sublance, and discloses a converter sublance with a sublance lifting structure, which comprises a base, a guide rail fixedly mounted at the top end of the base, a lifting structure arranged inside the front surface of the guide rail, clearing structures arranged inside the two side surfaces of the guide rail, and a blocking protection structure arranged right above the clearing structures, the front end of the lifting structure is connected with a sublance body; the removing structure comprises first sliding grooves formed in the two sides of the guide rail, and first springs are fixedly installed at the bottom ends in the first sliding grooves. According to the converter sublance with the sublance lifting structure, the clearing structures are arranged on the two sides of the inner concave face of the guide rail, in the process that the sublance obtains information such as molten steel temperature and components, the sublance can do reciprocating motion, and the clearing structures can scrape away steel slag attached to the outer wall of the sublance body; the problem that steel slag is attached to the outer wall and the use of the sublance is affected for a long time due to the fact that a layer of oxide is formed on the outer wall of the sublance body due to high temperature is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of converter auxiliary lances, in particular to a converter auxiliary lance with an auxiliary lance lifting structure. Background Art

[0002] The automatic converter steelmaking technology is that before the converter blowing, the secondary computer calculates the static steelmaking model data such as the oxygen blowing amount, oxygen lance blowing height, bottom blowing amount and auxiliary material addition amount required for smelting according to the temperature, composition, weight of the molten iron and the planned steel type. In the later stage of blowing, the secondary lance is used to obtain the molten steel temperature, composition and other information, and then the secondary computer makes dynamic steelmaking model adjustment data to ensure that the smelting end point reaches the hit zone set by the secondary computer. This technology is a highly difficult and complex technology that integrates automatic control, metallurgical mechanism, production process, mathematical model, artificial intelligence, digital simulation, computer and other technologies.

[0003] Automated steelmaking with converter auxiliary lances is one of the important signs and development trends of the advancement of modern steel mills. Advanced foreign steel mills are equipped with auxiliary lances on the converters, which can maintain extremely high carbon content and temperature hit rate, so that more than 90% of the furnaces can produce steel immediately after stopping the blowing, greatly improving the converter output and realizing fully automated steelmaking.

[0004] In the process of obtaining information such as molten steel temperature and composition, a layer of oxide will form on the high-temperature outer wall of the existing converter auxiliary gun, causing slag to adhere to the outer wall, which will affect the use of the auxiliary gun for a long time. For this reason, we propose a converter auxiliary gun with an auxiliary gun lifting structure to solve the above technical problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a converter auxiliary gun with an auxiliary gun lifting structure, which has the advantages of facilitating the removal of slag from the outer wall of the auxiliary gun and providing good protection for the removal structure, thereby solving the above technical problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a converter auxiliary gun with an auxiliary gun lifting structure, comprising a base, a guide rail is fixedly installed on the top of the base, a lifting structure is arranged inside the front of the guide rail, and a cleaning structure is arranged inside the two side surfaces, a blocking protection structure is arranged directly above the cleaning structure, and the front end of the lifting structure is connected to the auxiliary gun body;

[0009] The clearing structure includes a first slide groove arranged inside both sides of the guide rail, a first spring is fixedly installed at the bottom end of the first slide groove, a connecting arm is fixedly installed at the top of the first spring, a retaining ring is fixedly installed at the front end of the connecting arm, the retaining ring is semicircular, and the inner diameter is equal to the outer diameter of the auxiliary gun body.

[0010] As the preferred technical solution of the utility model, the lifting structure includes a second sliding groove opened on the front side of the guide rail and a driving motor fixedly installed on the top end of the guide rail, the output end of the driving motor is connected to a first screw rod, the first screw rod passes through the inside of the second sliding groove, and the outer wall is threadedly connected to a connecting rod, the front end of the connecting rod is in a circular ring shape, and the auxiliary gun body is fixedly installed inside.

[0011] As a preferred technical solution of the utility model, the guide rail is U-shaped, and connecting arms are symmetrically arranged on two inner sides, and the diameter of the circular ring formed by the symmetrically arranged retaining rings is equal to the diameter of the auxiliary gun body.

[0012] As a preferred technical solution of the utility model, the blocking protection structure includes a servo motor fixedly installed on the top of the guide rail, the output end of the servo motor is connected to a second screw rod, the second screw rod is located inside the first slide groove, and the outer wall is threadedly connected to a slider, the outer wall of the slider is fixedly connected to a buffer rod, and the bottom end of the buffer rod is fixedly connected to a stopper.

[0013] As a preferred technical solution of the utility model, the buffer rod is U-shaped and consists of two rod sections, the two rod sections are sleeved together, and a second spring is arranged inside the buffer rod for buffering the relative movement of the two end rods.

[0014] As a preferred technical solution of the utility model, a photoelectric sensor is fixedly installed on the front side of the guide rail, and the photoelectric sensor is electrically connected to an external PLC controller, and the PLC controller controls the rotation of the servo motor.

[0015] Compared with the prior art, the utility model provides a converter auxiliary gun with an auxiliary gun lifting structure, which has the following beneficial effects:

[0016] 1. The utility model provides cleaning structures on both sides of the inner concave surface of the guide rail. When the auxiliary gun obtains information such as the temperature and composition of the molten steel, the auxiliary gun will reciprocate. The cleaning structure can scrape off the steel slag attached to the outer wall of the auxiliary gun body, thereby avoiding the problem that a layer of oxide is formed on the outer wall of the auxiliary gun body due to the high temperature, causing the steel slag to adhere to the outer wall, which will affect the use of the auxiliary gun for a long time, and extending the service life.

[0017] 2. The utility model sets a blocking protection structure above the cleaning structure. The photoelectric sensor senses the position of the auxiliary gun body and the retaining ring. When the retaining ring leaves the sensing range of the photoelectric sensor, the signal is transmitted to the PLC controller. The PLC controller controls the servo motor to rotate, driving the buffer rod to move downward, so that the stop block moves downward, limits the connecting arm, and prevents the retaining ring from always following the movement of the auxiliary gun body, thereby protecting the cleaning structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model from above;

[0020] Figure 3 It is a side cross-sectional schematic diagram of the structure of the utility model;

[0021] Figure 4 This is a front view cross-sectional schematic diagram of the structure of the utility model;

[0022] Figure 5 It is a schematic cross-sectional view of the structure of the utility model viewed from above.

[0023] Among them: 1. base; 2. guide rail; 3. auxiliary gun body; 4. first slide groove; 5. first spring; 6. connecting arm; 7. retaining ring; 8. driving motor; 9. first screw rod; 10. second slide groove; 11. connecting rod; 12. servo motor; 13. second screw rod; 14. buffer rod; 15. block; 16. photoelectric sensor; 17. second spring. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5 A converter auxiliary gun with an auxiliary gun lifting structure comprises a base 1, a guide rail 2 is fixedly installed on the top of the base 1, a lifting structure is arranged inside the front of the guide rail 2, and a cleaning structure is arranged inside the two side surfaces, a blocking protection structure is arranged just above the cleaning structure, and an auxiliary gun body 3 is connected to the front end of the lifting structure;

[0028] The cleaning structure includes a first slide groove 4 arranged inside both sides of the guide rail 2, a first spring 5 is fixedly installed at the bottom end of the first slide groove 4, a connecting arm 6 is fixedly installed at the top of the first spring 5, and a retaining ring 7 is fixedly installed at the front end of the connecting arm 6. The retaining ring 7 is semicircular, and the inner diameter is equal to the outer diameter of the auxiliary gun body 3. By arranging the cleaning structure on both sides of the inner concave surface of the guide rail 2, the auxiliary gun will reciprocate in the process of the auxiliary gun obtaining the information such as the temperature and composition of the molten steel. The cleaning structure can scrape off the slag attached to the outer wall of the auxiliary gun body 3, thereby avoiding the problem that a layer of oxide will be formed on the outer wall of the auxiliary gun body 3 due to the high temperature, so that the slag will adhere to the outer wall, which will affect the use of the auxiliary gun for a long time, thereby extending the service life.

[0029] To realize the function of lifting the auxiliary gun body 3, please refer to Figure 1-4 , start the driving motor 8, and its output end drives the first screw rod 9 to rotate inside the second slide groove 10, driving the connecting rod 11 threadedly connected to the outer wall of the first screw rod 9 to move up and down inside the guide rail 2, thereby driving the auxiliary gun body 3 fixedly installed inside the connecting rod 11 with a circular ring shape at the front end to move up and down, realizing the lifting function.

[0030] To achieve the function of removing slag from the outer wall of the auxiliary gun body 3, please refer to Figure 1-2 and Figure 5 In the process of the auxiliary gun body 3 obtaining the information such as the temperature and composition of the molten steel, the gun body moves downward first. After the information is obtained, the gun body is recovered. In the recovery process, the gun body moves upward. Since there is slag attached to the outer wall of the gun body, the inner diameter of the retaining ring 7 is equal to the outer diameter of the gun body, so the wall will drive the retaining ring 7 and the connecting arm 6 fixedly connected to the retaining ring 7 to move upward together, and the first spring 5 fixedly connected to the bottom end of the connecting arm 6 is stretched. When the retaining ring 7 removes the slag on the outer wall of the gun body, it is driven by the first spring 5 to retract the connecting arm 6. The action of the first spring 5 can buffer the descent of the connecting arm 6 to form a protection.

[0031] Among them, the guide rail 2 is U-shaped, and the connecting arms 6 are symmetrically arranged on the two inner sides. The diameter of the circular ring formed by the symmetrically arranged retaining rings 7 is equal to the diameter of the auxiliary gun body 3. This structure can fit closely to the outer wall of the gun body when removing the slag on the outer wall of the gun body, making it easy to remove the slag.

[0032] To implement protection for clearing structures, see Figure 1-4 A photoelectric sensor 16 is fixedly installed on the front side of the guide rail 2 to detect the positions of the auxiliary gun body 3 and the retaining ring 7. When the auxiliary gun body 3 drives the retaining ring 7 to move and leaves the detection range of the photoelectric sensor 16, the photoelectric sensor 16 transmits a signal to the PLC controller electrically connected to the outside, and the PLC controller then controls the servo motor 12 to rotate, and the servo motor 12 drives the second screw rod 13 to rotate, and the slider threadedly connected to the second screw rod 13 moves downward inside the first slide groove 4, driving the buffer rod 14 to move downward, so that the stop block 15 moves downward, and the connecting arm 6 is limited to be separated from the auxiliary gun body 3, thereby realizing the function of protecting the cleaning structure.

[0033] Among them, the buffer rod 14 is U-shaped and consists of two sections of rod bodies, which are socketed with each other. A second spring 17 is arranged inside the buffer rod 14, and the second spring 17 connects the two sections of rod bodies to buffer the relative movement of the two ends of the rod bodies to avoid direct rigid contact between the connecting arm 6 and the block 15, which may cause damage and affect the service life.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A converter auxiliary gun with an auxiliary gun lifting structure, comprising a base (1), a guide rail (2) being fixedly mounted on the top of the base (1), characterized in that: The front of the guide rail (2) is provided with a lifting structure, and the two side surfaces are provided with cleaning structures. A blocking protection structure is provided directly above the cleaning structure. The front end of the lifting structure is connected to a secondary gun body (3). The cleaning structure comprises a first slide groove (4) arranged inside both sides of the guide rail (2), a first spring (5) is fixedly installed at the bottom end of the first slide groove (4), a connecting arm (6) is fixedly installed at the top end of the first spring (5), and a retaining ring (7) is fixedly installed at the front end of the connecting arm (6), and the retaining ring (7) is semicircular, and the inner diameter is equal to the outer diameter of the auxiliary gun body (3).

2. The converter auxiliary lance with an auxiliary lance lifting structure according to claim 1, characterized in that: The lifting structure comprises a second slide groove (10) opened on the front side of the guide rail (2) and a driving motor (8) fixedly installed on the top end of the guide rail (2); the output end of the driving motor (8) is connected to a first screw rod (9); the first screw rod (9) passes through the inside of the second slide groove (10), and the outer wall is threadedly connected to a connecting rod (11); the front end of the connecting rod (11) is in a circular ring shape, and the auxiliary gun body (3) is fixedly installed inside.

3. The converter auxiliary lance with an auxiliary lance lifting structure according to claim 2, characterized in that: The guide rail (2) is U-shaped, and connecting arms (6) are symmetrically arranged on the two inner sides. The diameter of the circular ring formed by the symmetrically arranged retaining rings (7) is equal to the diameter of the auxiliary gun body (3).

4. The converter auxiliary lance with an auxiliary lance lifting structure according to claim 3, characterized in that: The blocking protection structure comprises a servo motor (12) fixedly mounted on the top end of the guide rail (2); the output end of the servo motor (12) is connected to a second screw rod (13); the second screw rod (13) is located inside the first slide groove (4) and has a slider threadedly connected to the outer wall; a buffer rod (14) is fixedly connected to the outer wall of the slider; and a stopper (15) is fixedly connected to the bottom end of the buffer rod (14).

5. The converter auxiliary lance with an auxiliary lance lifting structure according to claim 4, characterized in that: The buffer rod (14) is U-shaped and consists of two rod sections, the two rod sections are sleeved together, and a second spring (17) is arranged inside the buffer rod (14) for buffering the relative movement of the rod sections at both ends.

6. The converter auxiliary lance with an auxiliary lance lifting structure according to claim 5, characterized in that: A photoelectric sensor (16) is fixedly mounted on the front of the guide rail (2); the photoelectric sensor (16) is electrically connected to an external PLC controller; and the PLC controller controls the rotation of the servo motor (12).

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