A quick dismounting device for oxygen lance of a side-blown furnace

Abstract

This utility model relates to the technical field of smelting furnace equipment, specifically to a quick-release device for an oxygen lance in a side-blown furnace. It includes a cylindrical slide rail and a slider slidably fitted onto the outside of the cylindrical slide rail. A striking shoulder and a flange are fixedly connected to the upper and lower ends of the cylindrical slide rail, respectively. An annular boss is fixedly provided on the outer side of the slider. Several counterweight housings are arranged in a ring at the bottom of the annular boss. Several counterweight steel balls are filled inside the counterweight housings, and an end cap is detachably connected to the bottom of the counterweight housings. Handles are symmetrically arranged on both sides of the upper end of the slider, located between the annular boss and the striking shoulder. This utility model enables quick removal of the oxygen lance from the furnace body. It is simple to operate, saves time and effort, reduces the labor intensity of workers, and improves the efficiency and safety of oxygen lance removal.

Description

Technical Field

[0001] This utility model relates to the technical field of smelting furnace equipment, specifically to a quick-release device for oxygen lance in a side-blown furnace. Background Technology

[0002] Side-blown furnaces are mainly used in the non-ferrous metallurgical industry for smelting metals such as copper, zinc, and lead. They maintain a vigorous oxidation reaction by injecting oxygen-rich air into the high-temperature molten pool through oxygen lances on the side walls. The temperature inside the side-blown furnace is maintained at 1200-1350℃ year-round, accompanied by high concentrations of SO2, metal dust, and slag. The airtightness is ensured by a structure that seals the oxygen lance with magnesia-chrome oxygen lance bricks and refractory filler between the oxygen lance and the furnace body.

[0003] During the production process of a side-blown furnace, due to the difference in thermal expansion between materials, microscopic seizing can easily occur at the mating surfaces between the oxygen lance and the furnace body. At the same time, high-temperature molten slag forms hard nodules on the surface of the protruding part of the oxygen lance inside the side-blown furnace, making it difficult to remove the oxygen lance during maintenance. Existing technology usually uses hammering and rapping to disassemble the oxygen lance, which is not only time-consuming but also easily damages the oxygen lance and the inner hole of the brick. A single oxygen lance removal operation takes two to three hours, resulting in low oxygen lance disassembly efficiency and high labor intensity for workers. In addition, the side-blown furnace stops working during the oxygen lance disassembly operation, and the long shutdown waiting not only reduces the furnace operating rate but also increases energy consumption and production costs. Summary of the Invention

[0004] This invention addresses the problem of difficult oxygen lance disassembly during maintenance of side-blown furnaces by providing a quick-release device for oxygen lances. This device can quickly remove the oxygen lance from the furnace body, is simple to operate, saves time and effort, reduces the labor intensity of workers, and improves the efficiency and safety of oxygen lance disassembly.

[0005] To achieve the above objectives, the technical solution of this utility model is: a quick-release device for a side-blown furnace oxygen lance, comprising a cylindrical slide rail and a slider slidably sleeved on the outside of the cylindrical slide rail. A striking shoulder and a flange are fixedly connected to the upper and lower ends of the cylindrical slide rail, respectively. The flange is used to connect to the oxygen lance holder, and the striking shoulder is used to receive the impact of the slider, which acts directly on the oxygen lance through the cylindrical slide rail and the flange, achieving the mass impact required for disassembling the oxygen lance.

[0006] An annular boss is fixedly mounted on the outer side of the slider. Several counterweight housings are arranged in a ring at the bottom of the annular boss, and each counterweight housing is filled with several counterweight steel balls. An end cap is detachably connected to the bottom of each counterweight housing. Handles are symmetrically arranged on both sides of the upper end of the slider, located between the annular boss and the striking shoulder. The operator can hold the handles with both hands and quickly lift the slider to strike the striking shoulder. The resulting rebound or springback force is absorbed by the counterweight steel balls inside the counterweight housing, making the striking more accurate and stable. The counterweight steel balls also have a vibration-suppressing effect.

[0007] Furthermore, the slider has a through hole along its axial direction, the diameter of which is larger than the diameter of the cylindrical slide rail. The slider is slidably fitted onto the cylindrical slide rail through the through hole. The through hole allows the slider to slide on the cylindrical slide rail and impact the shoulder.

[0008] Furthermore, the cylindrical slide rail is symmetrically provided with lubrication grooves, and the inner side of the slider is symmetrically provided with strip-shaped sliders that match the lubrication grooves. The cooperation between the strip-shaped sliders and the lubrication grooves guides the slider's sliding on the cylindrical slide rail, allowing the slider to move linearly along the cylindrical slide rail.

[0009] Furthermore, the strip slider is slidably disposed in the lubrication groove, which stores grease. The grease ensures that the slider slides smoothly along the cylindrical slide rail without jamming.

[0010] Furthermore, the flange is provided with several fixing bolts, which are used to fix the flange to the oxygen lance holder, thereby connecting the device to the oxygen lance.

[0011] Furthermore, the total volume of the plurality of counterweight steel balls does not exceed 80% of the effective volume of the counterweight housing. The end cap is detachably threaded to the counterweight housing. The end cap is used to increase or decrease the number of counterweight steel balls in the counterweight housing, thereby adjusting the impact force of the slider striking the shoulder.

[0012] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has the advantages of reasonable structure, convenient carrying, reusability and good performance. It uses the controllable inertial impact of slider and counterweight steel ball to disassemble the oxygen lance, which can quickly remove the oxygen lance from the furnace body without easily damaging the oxygen lance body. It is simple to operate, saves time and effort, reduces the labor intensity of workers, and improves the efficiency of oxygen lance disassembly and the safety of operation.

[0013] This invention uses a handle to quickly lift the slider to impact the striking platform shoulder, and then directly applies the impact to the oxygen lance through the cylindrical slide rail and flange, achieving the mass impact required to disassemble the oxygen lance. This results in the controlled inertial impact of the slider and counterweight steel ball to disassemble the oxygen lance. The counterweight steel ball moves along the slider direction under the inertial action inside the counterweight housing. When the slider collides with the striking platform, it enhances the striking effect. At the same time, the counterweight steel ball absorbs the rebound energy, eliminating rebound and vibration, and preventing personnel injury caused by the hammer slipping or the oxygen lance suddenly becoming loose, thus improving the safety of the operation. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a quick-release device for an oxygen lance in a side-blown furnace according to this utility model; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the structure of this utility model in use.

[0015] The attached diagram is labeled as follows: 1 is a cylindrical slide rail, 101 is a lubrication groove, 2 is a flange, 3 is a striking shoulder, 4 is a fixing bolt, 5 is a slider, 501 is a strip slider, 6 is an annular boss, 7 is a counterweight housing, 8 is an end cap, 9 is a counterweight steel ball, and 10 is a handle. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-3 As shown, a quick-release device for a side-blown furnace oxygen lance includes a cylindrical slide rail 1 and a slider 5 slidably sleeved on the outside of the cylindrical slide rail 1. The upper and lower ends of the cylindrical slide rail 1 are respectively fixedly connected to a striking shoulder 3 and a flange 2. In this embodiment, the flange 2 is used to connect the oxygen lance holder, thereby connecting the device to the oxygen lance to be disassembled. The striking shoulder 3 limits the movement of the slider 5 and also receives mass impact. The slider 5 can slide up and down on the cylindrical slide rail 1. When the slider 5 slides upward and impacts the striking shoulder 3, the mass impact received by the striking shoulder 3 acts directly on the oxygen lance through the cylindrical slide rail 1 and the flange 2, thereby achieving the disassembly of the oxygen lance.

[0017] An annular boss 6 is fixedly provided on the outer side of the slider 5. Several counterweight housings 7 are arranged in a ring at the bottom of the annular boss 6. Several counterweight steel balls 9 are filled inside the counterweight housings 7. An end cap 8 is detachably connected to the bottom of the counterweight housing 7. Handles 10 are symmetrically arranged on both sides of the upper end of the slider 5, located between the annular boss 6 and the striking shoulder 3. In this embodiment, the annular boss 6 provides a supporting platform for the counterweight housings 7. There are four counterweight housings 7 at the bottom of the annular boss 6. The counterweight steel balls 9 inside the counterweight housings 7 act as counterweights, forming a concentrated mass as the slider 5 moves. The end cap 8 seals the lower end of the counterweight housing 7. The operator can hold the handle 10 with both hands and quickly lift the slider 5 to strike the striking shoulder 3. The counterweight steel ball 9 moves along the direction of the slider 5 under the inertia inside the counterweight housing 7. When it collides with the striking shoulder 3, it can improve the striking effect. The rebound or springback force generated by the striking collision can also be absorbed by the counterweight steel ball 9, making the striking more accurate and stable, and has the function of suppressing vibration.

[0018] The slider 5 has a through hole along its axial direction. The diameter of the through hole is larger than the diameter of the cylindrical slide rail 1. The slider 5 is slidably fitted onto the cylindrical slide rail 1 through the through hole. In this embodiment, under the action of the through hole, the slider 5 can slide and impact the shoulder 3 on the cylindrical slide rail 1. There is a gap of 3 to 5 mm between the inner side of the slider 5 and the outer side of the cylindrical slide rail 1, which allows the slider 5 to move freely along the axial direction of the cylindrical slide rail 1 while leaving sufficient swing margin, thereby preventing the slider 5 from getting stuck.

[0019] The cylindrical slide rail 1 is symmetrically provided with lubrication grooves 101, and the inner side of the slider 5 is symmetrically provided with strip sliders 501 that match the lubrication grooves 101. In this embodiment, the strip sliders 501 cooperate with the lubrication grooves 101 to guide the sliding motion of the slider 5 on the cylindrical slide rail 1, so that the slider 5 moves in a straight line along the cylindrical slide rail 1.

[0020] The strip slider 501 is slidably disposed within the lubrication groove 101, which stores grease. In this embodiment, the grease stored in the lubrication groove 101 enables low friction and low wear between the slider 5 and the cylindrical slide rail 1, ensuring that the slider 5 can slide smoothly along the cylindrical slide rail 1 without jamming.

[0021] The flange 2 is provided with a number of fixing bolts 4. In this embodiment, there are four fixing bolts 4 on the flange 2. The flange 2 is fixed to the oxygen lance holder by fixing bolts 4, so that the device is connected to the oxygen lance. This allows the mass impact to be applied directly to the oxygen lance through the cylindrical slide rail 1 and the flange 2, thereby enabling the disassembly of the oxygen lance.

[0022] The total volume of the plurality of counterweight steel balls 9 does not exceed 80% of the effective volume of the counterweight housing 7, and the end cap 8 is detachably threaded to the counterweight housing 7. In this embodiment, the end cap 8 can be a sealing plug that can be repeatedly disassembled and reassembled. Under the action of the end cap 8, the number of counterweight steel balls 9 in the counterweight housing 7 can be increased or decreased, and the impact force of the slider 5 striking the shoulder 3 can be adjusted.

[0023] The working principle of this utility model is as follows: First, open the end cover 8 at the lower end of the counterweight housing 7. According to the needs of the oxygen lance disassembly site, put an appropriate amount of counterweight dry steel balls 9 into the counterweight housing 7 and then tighten the end cover 9. Install the flange 2 on the oxygen lance seat and tighten it with the fixing bolts 4. Fill the symmetrical lubrication grooves 101 with grease. The operator pulls the handle 10 to make the slider 5 reciprocate along the cylindrical slide rail 1 so that the filled grease is evenly distributed.

[0024] When disassembling the oxygen lance, the worker holds both handles 10 with both hands and quickly lifts them upwards, causing the slider 5 to slide upwards along the cylindrical slide rail 1 at an accelerated speed. The slider 5 drives the annular boss 6 and the counterweight housing 7 at the bottom of the annular boss 6 to move upwards. The slider 5 strikes the shoulder 3 upwards, and the impact on the shoulder 3 is transmitted directly to the oxygen lance through the cylindrical slide rail 1 and the flange 2, completing one impact operation. If the oxygen lance is not loose, the above operation can be repeated multiple times until the oxygen lance is completely removed. After the oxygen lance is disassembled, the fixing bolts 4 of the fixing flange 2 and the oxygen lance seat are loosened, and then the device can be moved to the next lance position for the oxygen lance disassembly operation again.

[0025] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.

Claims

1. A side-blown furnace oxygen lance quick-release device, characterized in that, It includes a cylindrical slide rail (1) and a slider (5) that is slidably sleeved on the outside of the cylindrical slide rail (1). The upper and lower ends of the cylindrical slide rail (1) are respectively fixedly connected to a striking shoulder (3) and a flange (2). An annular boss (6) is fixedly provided on the outer side of the slider (5). Several counterweight shells (7) are arranged in annularly at the bottom of the annular boss (6). Several counterweight steel balls (9) are filled inside the counterweight shells (7). An end cap (8) is detachably connected to the bottom of the counterweight shells (7). Handles (10) are symmetrically provided on both sides of the upper end of the slider (5). The handles (10) are located between the annular boss (6) and the striking shoulder (3).

2. A quick dismounting device for oxygen lance of a side-blown furnace according to claim 1, characterized in that, The slider (5) has a through hole along the axial direction. The diameter of the through hole is larger than the diameter of the cylindrical slide rail (1). The slider (5) is slidably sleeved on the cylindrical slide rail (1) through the through hole.

3. A quick release device for a side blown furnace oxygen lance according to claim 2, characterized in that, The cylindrical slide rail (1) is symmetrically provided with lubrication grooves (101), and the inner side of the slider (5) is symmetrically provided with strip sliders (501) that match the lubrication grooves (101).

4. A quick dismounting device for oxygen lance of a side-blown furnace according to claim 3, characterized in that, The strip slider (501) is slidably disposed in the lubrication groove (101), which stores grease.

5. A quick dismounting device for oxygen lance of a side-blown furnace according to claim 1, characterized in that, The flange (2) is provided with several fixing bolts (4).

6. A quick dismounting device for oxygen lance of a side-blown furnace according to claim 1, characterized in that, The total volume of the plurality of counterweight steel balls (9) does not exceed 80% of the effective volume of the counterweight housing (7), and the end cap (8) is threadedly detachably connected to the counterweight housing (7).

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