Oxygen lance drawing device for bottom blowing furnace

Abstract

The utility model discloses an oxygen lance drawing device for a bottom blowing furnace, which comprises a walking trolley, a hydraulic oil station is arranged on the rear side of the top of the walking trolley, and a motor is arranged at the top of the hydraulic oil station; two lifting oil cylinders are arranged on the front side of the top of the walking trolley, a supporting plate is arranged on the tops of the two lifting oil cylinders, and a lateral moving plate is arranged above the supporting plate. An electric cylinder is arranged at the top of the lateral moving plate, one end of the electric cylinder is fixed on the lateral moving plate, and the other end is fixed on the supporting plate; a hydraulic oil cylinder is arranged on the rear side of the top of the lateral moving plate. The other end of the hydraulic oil cylinder is connected with the hydraulic oil station; two riding wheels are arranged above the front end of the lateral moving plate, and a disc I is arranged on the two riding wheels; three circular pipes are arranged on one side of the disc I in the circumferential direction, and arc-shaped clamping rings are arranged among the three circular pipes; two control handrails are arranged on the walking trolley, and an electric control box is arranged between the two control handrails. According to the utility model, the oxygen lance can be quickly and effectively pulled out, time and labor are saved, the maintenance efficiency is improved, and meanwhile, the operation rate of the bottom blowing furnace is improved.

Description

Technical Field

[0001] This utility model relates to an oxygen lance removal device for a bottom-blown refining furnace, belonging to the technical field of bottom-blown furnace equipment. Background Technology

[0002] The bottom-blown copper smelting furnace involves adding copper matte and flux into the furnace. Seventeen oxygen lances are installed at the bottom of the furnace to inject oxygen-enriched air into the molten metal for smelting. Impurities such as iron and sulfur in the molten metal react with oxygen and flux to form slag and SO2 flue gas, which are then removed, resulting in qualified product – crude copper. The furnace structure includes two copper discharge ports, one emergency copper discharge port, one slag port, one emergency slag port, and one feed port. During production, the oxygen lance flow rate can be unstable due to variations in the furnace atmosphere and process operations, leading to a decrease in the gas supply. Therefore, temporary removal for maintenance is necessary. Previously, maintenance required manual removal using a sledgehammer, which was time-consuming and labor-intensive. When severe mushroom-shaped lance growth occurred, maintenance efficiency decreased significantly, severely impacting the efficiency of the bottom-blown furnace operation and the stability of continuous hot production. Therefore, we designed an oxygen lance removal device for the bottom-blown copper smelting furnace. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an oxygen lance removal device for a bottom-blown furnace. This device can quickly and effectively remove the oxygen lance, saving time and effort, improving maintenance efficiency, and increasing the operating rate of the bottom-blown furnace.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a device for removing an oxygen lance in a bottom-blown refining furnace, comprising a traveling trolley, a hydraulic oil station installed on the rear side of the top of the traveling trolley, a motor installed on the top of the hydraulic oil station, and two control levers installed on the hydraulic oil station; two vertically oriented lifting cylinders are installed on the front side of the top of the traveling trolley, the two lifting cylinders being arranged at intervals; a support plate is installed on the top of the two lifting cylinders, and two rails are arranged at intervals on the support plate, the rails being arranged horizontally and longitudinally; a side shift plate is installed above the support plate, the bottom of the side shift plate being slidably connected to the support plate through the two rails; an electric cylinder with an internal screw drive mechanism is installed on the top of the side shift plate, the electric cylinder being arranged horizontally and longitudinally, one end of the electric cylinder being fixed to the side shift plate, and the other end of the electric cylinder being fixed to the support plate.

[0005] A hydraulic cylinder is installed on the rear side of the top of the side shift plate, and a telescopic device is installed on the front side of the top of the side shift plate; the telescopic device is connected to one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected to the hydraulic oil station through a hydraulic hose.

[0006] Two longitudinally spaced, parallel support rollers are installed above the front end of the side shift plate. Each support roller has a groove. A disc I is installed on each support roller, and the outer edge of disc I is located in the groove of the two support rollers. Three horizontally arranged and evenly spaced circular tubes are fixed on one side of disc I. An arc-shaped retaining ring is fixed between the three circular tubes.

[0007] On the hydraulic oil station side, the traveling trolley is equipped with two spaced-apart control handles, and an electrical control box is installed between the two control handles. The electrical control box contains electrical components and is electrically connected to the motor and control handles.

[0008] Furthermore, the telescopic device includes a disc II, a circular plate, guide columns, and round steel bars. One end of the hydraulic cylinder is fixedly connected to the center of one side of the disc II. Three guide columns arranged horizontally and evenly spaced are fixed in the circumferential direction between the other side of the disc II and the disc I. Three evenly spaced U-shaped notches are provided in the circumferential direction of the circular plate. The guide columns are respectively connected to the U-shaped notches of the circular plate and support the circular plate. The piston end of the hydraulic cylinder passes through the center of the disc II and is fixed to the center of the circular plate. Three evenly spaced round steel bars are fixed in the circumferential direction on the side of the circular plate facing the disc I. The round steel bars are respectively located in their corresponding circular tubes.

[0009] Furthermore, below the lifting cylinder on this side, a drive axle is installed between the two wheels of the traveling trolley, and the drive axle is electrically connected to the electrical control box.

[0010] Furthermore, a start switch is installed on the trolley above the electrical control box, and the start switch is electrically connected to the electrical control box.

[0011] Furthermore, the hydraulic cylinders are arranged horizontally.

[0012] Furthermore, the side of the lateral plate near the motor protrudes from the support plate.

[0013] Furthermore, the orientation of the electric cylinder and the track is consistent with the width direction of the side-shifting plate.

[0014] Furthermore, the height of the lifting cylinder after lifting is consistent with the height of the oxygen lance holder, and the size of the retaining ring is consistent with that of the oxygen lance holder.

[0015] The beneficial effects of this utility model are: this utility model can quickly and effectively pull out the oxygen lance, saving time and effort, and is simple to operate, solving the problem of wasting time in the existing lance pulling and improving the operating efficiency of the bottom blowing furnace; it mainly utilizes mechanization technology, reducing the workload of workers, while improving maintenance efficiency and operating efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the drive axle of this utility model.

[0019] Figure 3 This is a schematic diagram showing the position of the retaining ring of this utility model.

[0020] Numbering on the map:

[0021] 1. Electrical control box; 2. Handrail; 3. Start switch; 4. Hydraulic cylinder; 5. Telescopic device; 501. Disc II; 502. Circular plate; 503. Guide column; 504. Round steel; 6. Side shift plate; 7. Support roller; 8. Electric cylinder; 9. Motor; 10. Hydraulic oil station; 11. Lifting cylinder; 12. Drive axle; 13. Hydraulic hose; 14. Disc I; 15. Traveling trolley; 16. Support plate; 17. Track; 18. Circular tube; 19. Snap ring; 20. Control lever. Detailed Implementation

[0022] like Figure 1 As shown in Figure 3, an oxygen lance removal device for a bottom-blown refining furnace includes a traveling trolley 15. A hydraulic station 10 is mounted on the rear top of the traveling trolley 15, and a motor 9 is mounted on the top of the hydraulic station 10. Two control levers 20 are provided on the hydraulic station 10. Two vertically oriented lifting cylinders 11 are mounted on the front top of the traveling trolley 15, and the two lifting cylinders 11 are arranged at intervals. A support plate 16 is mounted on the top of the two lifting cylinders 11, and two spaced-apart tracks 17 are provided on the support plate 16. The track 17 is arranged horizontally and longitudinally; a side shift plate 6 is provided above the support plate 16, and the side of the side shift plate 6 near the motor 9 protrudes from the support plate 16. The bottom of the side shift plate 6 is slidably connected to the support plate 16 through two tracks 17; an electric cylinder 8 with an internal screw drive mechanism is provided on the top of the side shift plate 6. The electric cylinder 8 is arranged horizontally and longitudinally, and the orientation of the electric cylinder 8 and the track 17 is consistent with the width direction of the side shift plate 6; one end of the electric cylinder 8 is fixed to the side shift plate 6, and the other end of the electric cylinder 8 is fixed to the support plate 16.

[0023] A hydraulic cylinder 4 is installed on the rear side of the top of the side-shifting plate 6. The hydraulic cylinder 4 is horizontally arranged. A telescopic device 5 is installed on the front side of the top of the side-shifting plate 6. The telescopic device 5 includes a disc II 501, a circular plate 502, guide posts 503, and round steel 504. One end of the hydraulic cylinder 4 is fixedly connected to the center of one side of the disc II 501. Three guide posts 503 are fixed in a horizontal direction and evenly spaced between the other side of the disc II 501 and the disc I 14. The circular plate 502... Three evenly spaced U-shaped notches are provided in the circumferential direction of plate 2. The guide post 503 is respectively connected to the U-shaped notches of the circular plate 502 and supports the circular plate 502. The piston end of the hydraulic cylinder 4 passes through the center of the disc II 501 and is fixed to the center of the circular plate 502. Three horizontally arranged and evenly spaced round steel bars 504 are fixed in the circumferential direction of the circular plate 502 facing the disc I 14. The round steel bars 504 are respectively located in their corresponding round tubes 18.

[0024] Two longitudinally spaced, parallel support rollers 7 are installed above the front end of the side shift plate 6. Each support roller 7 has a groove. A disc 14 is installed on each of the two support rollers 7. The outer edge of the disc 14 is located in the groove of the two support rollers 7. Three horizontally arranged and evenly spaced circular tubes 18 are fixed on one side of the disc 14. An arc-shaped retaining ring 19 is fixed between the three circular tubes 18.

[0025] On the hydraulic station 10 side, the traveling trolley 15 is equipped with two spaced-apart control handles 2, and an electrical control box 1 is installed between the two control handles 2. The electrical control box 1 contains electrical components and is electrically connected to the motor 9 and the control handles 2. Below the lifting cylinder 11 side, a drive axle 12 is installed between the two traveling wheels of the traveling trolley 15, and the drive axle 12 is electrically connected to the electrical control box 1. Above the electrical control box 1 side, a start switch 3 is installed on the traveling trolley 15, and the pneumatic switch 3 is electrically connected to the electrical control box 1. The height of the lifting cylinder 11 after lifting is the same as the height of the oxygen lance base, and the size of the retaining ring 19 is the same as that of the oxygen lance base.

[0026] During use, the telescopic device 5 is fixed on the side-shifting plate 6. The lead screw inside the electric cylinder 8 drives the lead screw nut fixed to the side-shifting plate 6 to move. The lead screw and lead screw mechanism drives the side-shifting plate 6 to move the telescopic device 5 left and right on the track 17, thereby realizing the left and right movement adjustment of the telescopic device 5. The motor 9 drives the hydraulic oil station 10, and the hydraulic oil station 10 injects oil into the hydraulic cylinder 4 through the hydraulic hose 13. The hydraulic cylinder 4 drives the telescopic device 5 to extend. The retaining ring 19 is locked on the oxygen lance seat. The piston of the hydraulic cylinder 4 extends and pushes the circular plate 502 and the circular steel 504 forward under the support of the guide column 503. The circular steel 504 extends out of the circular tube 18 and presses against the oxygen lance pressure plate. The circular steel 504 extends forward, and the retaining ring 19 on the circular tube 18 will drive the oxygen lance to move backward. At the same time, the entire oxygen lance pulling device also moves backward. In this way, the hydraulic cylinder 4 drives the telescopic device 5 to realize the automatic pulling of the oxygen lance.

[0027] Two lifting cylinders 11 push the support plate 16, the side-shifting plate 6 on the support plate 16, the hydraulic cylinder 4, and the telescopic device 5 upward to move up and down to find the correct height of the oxygen lance base. The lifting cylinders 11 are fixed on the traveling trolley 15, which is equipped with an electrical control box 1. The electrical control box 1 controls the circuit and provides power. The motor 9 and hydraulic station 10 behind the electrical control box 1 provide power to the hydraulic system. The hydraulic station 10 is equipped with two control levers 20, one of which is used to control the lifting of the lifting cylinder 11, and the other is used to control the extension and retraction of the piston of the hydraulic cylinder 4.

[0028] The two front wheels of the traveling trolley 15 are drive wheels, and the two rear wheels of the traveling trolley 15 are steering wheels; the control handle 2 is equipped with forward and reverse switches and can control steering, and the start switch 3 is equipped with key door and electric cylinder 8 control switches.

[0029] The left and right movement of the side plate 6 is used to adjust the fit clearance between the oxygen lance holder and the retaining ring 19. The height of the lifting cylinder 11 after lifting is consistent with the height of the oxygen lance holder, and the center of the telescopic device 5 is horizontally aligned with the center of the oxygen lance. The lifting cylinder 11 initially lifts the center of the telescopic device 5 above the center of the oxygen lance, and the retaining ring 19 is placed on the oxygen lance holder. Then the telescopic device 5 slowly falls until its center is aligned with the center of the oxygen lance, and then the lance is pulled out. This can prevent the oxygen lance from deforming during the pulling process.

Claims

1. A device for removing an oxygen lance in a bottom-blown refining furnace, comprising a traveling trolley (15), characterized in that: A hydraulic oil station (10) is installed on the rear side of the top of the traveling trolley (15). A motor (9) is installed on the top of the hydraulic oil station (10). Two control levers (20) are provided on the hydraulic oil station (10). Two vertical lifting cylinders (11) are installed on the front side of the top of the traveling trolley (15). The two lifting cylinders (11) are arranged at intervals. A support plate (16) is installed on the top of the two lifting cylinders (11). Two rails (17) are arranged at intervals on the support plate (16). The rails (17) are arranged horizontally and longitudinally. A side shift plate (6) is provided above the support plate (16). The bottom of the side shift plate (6) is slidably connected to the support plate (16) through the two rails (17). An electric cylinder (8) with a screw drive mechanism is provided on the top of the side shift plate (6). The electric cylinder (8) is arranged horizontally and longitudinally. One end of the electric cylinder (8) is fixed on the side shift plate (6), and the other end of the electric cylinder (8) is fixed on the support plate (16). A hydraulic cylinder (4) is installed on the rear side of the top of the side shift plate (6), and a telescopic device (5) is provided on the front side of the top of the side shift plate (6); the telescopic device (5) is connected to one end of the hydraulic cylinder (4), and the other end of the hydraulic cylinder (4) is connected to the hydraulic oil station (10) through the hydraulic hose (13); Two longitudinally spaced, parallel support rollers (7) are installed above the front end of the side shift plate (6). Each support roller (7) has a groove. A disc I (14) is installed on each of the two support rollers (7). The outer edge of the disc I (14) is located in the groove of the two support rollers (7). Three horizontally arranged and evenly spaced circular tubes (18) are fixed on one side of the disc I (14). An arc-shaped retaining ring (19) is fixed between the three circular tubes (18). On the side of the hydraulic oil station (10), the traveling trolley (15) is equipped with two spaced operating handles (2), and an electrical control box (1) is installed between the two operating handles (2). The electrical control box (1) contains electrical components and is electrically connected to the motor (9) and the operating handles (2).

2. The oxygen lance extraction device for a bottom-blown refining furnace according to claim 1, characterized in that: The telescopic device (5) includes a disc II (501), a circular plate (502), guide posts (503), and a round steel bar (504). One end of the hydraulic cylinder (4) is fixedly connected to the center of one side of the disc II (501). Three guide posts (503) are fixed in a horizontal direction and evenly spaced between the other side of the disc II (501) and the disc I (14). The circular plate (502) has three evenly spaced U-shaped notches in a circumferential direction for guiding... The column (503) is connected to the U-shaped notch of the circular plate (502) and supports the circular plate (502); the piston end of the hydraulic cylinder (4) passes through the center of the disc II (501) and is fixed to the center of the circular plate (502); three horizontally arranged and evenly spaced round steel bars (504) are fixed on the circumference of the circular plate (502) facing the disc I (14), and the round steel bars (504) are respectively located in their corresponding circular tubes (18).

3. The oxygen lance extraction device for a bottom-blown refining furnace according to claim 1, characterized in that: Below the lifting cylinder (11) on this side, a drive axle (12) is installed between the two wheels of the traveling trolley (15), and the drive axle (12) is electrically connected to the electrical control box (1).

4. The oxygen lance extraction device for a bottom-blown refining furnace according to claim 1, characterized in that: Above the electrical control box (1), a start switch (3) is installed on the traveling trolley (15), and the start switch (3) is electrically connected to the electrical control box (1).

5. A device for removing an oxygen lance in a bottom-blown furnace according to claim 1, characterized in that: The hydraulic cylinder (4) is arranged horizontally.

6. A device for removing an oxygen lance in a bottom-blown furnace according to claim 1, characterized in that: The side plate (6) protrudes from the support plate (16) on the side closest to the motor (9).

7. A device for removing an oxygen lance in a bottom-blown furnace according to claim 1, characterized in that: The orientation of the electric cylinder (8) and the track (17) is consistent with the width direction of the side-shifting plate (6).

8. A device for removing an oxygen lance in a bottom-blown furnace according to claim 1, characterized in that: The height of the lifting cylinder (11) after lifting is consistent with the height of the oxygen lance seat, and the size of the retaining ring (19) is consistent with that of the oxygen lance seat.

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