Visual oxygen lance for blast furnace start-up

Abstract

The utility model relates to smelting equipment technical field, the utility model provides a kind of visual oxygen lance for blast furnace blow-in, it includes: oxygen lance shell, the middle part of oxygen lance shell is equipped with flow channel, the bottom end of oxygen lance shell is fixedly connected with the oxygen transmission pipe and compressed air transmission pipe communicated with flow channel;Feedback board, the middle part of feedback board is embedded with feedback lens, the edge of the side of feedback board close to oxygen lance shell is fixedly connected with multiple lock rods, the end of oxygen lance shell close to feedback board is equipped with quick-mounting assembly, quick-mounting assembly is used for cooperating lock rod positioning feedback board;Protective assembly, protective assembly is assembled in the side of feedback board away from lock rod. Through the above technical scheme, the technical problem that the peephole mirror is lacking in effective protective measures in the unused state in the prior art, when contacting with the peephole mirror outside, the peephole mirror is easily scratched, and is easily attached by dust, affects the clarity of peephole mirror is solved.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a visible oxygen lance for blast furnace start-up. Background Technology

[0002] A visible oxygen lance is a technical device used for blast furnace start-up. Its main function is to precisely adjust oxygen and compressed air to monitor changes in the taphole state, thereby heating the hearth, timely removing slag and iron, significantly improving blast furnace start-up efficiency, and creating favorable conditions for the blast furnace to reach full production capacity quickly.

[0003] According to the search, a visual oxygen lance for blast furnace taphole with publication number CN208844120U can be observed through a viewing window to observe the state of coke combustion in the hearth and adjust the oxygen amount according to the flame color to ensure the safe use of the oxygen lance and the required amount of oxygen in the hearth, thus avoiding damage to the oxygen lance caused by improper oxygen control.

[0004] However, when the above-mentioned technical solution is applied, the viewing mirror lacks effective protection when it is not in use. When the external parts come into contact with the viewing mirror, it is very easy to scratch the viewing mirror and it is also easy to be covered by dust, which affects the clarity of the viewing mirror.

[0005] Based on this, we propose a visible oxygen lance for blast furnace start-up. Utility Model Content

[0006] To overcome the above-mentioned defects, this utility model provides a visible oxygen lance for blast furnace start-up, which solves the technical problem that in the prior art, the sight glass lacks effective protection when not in use, is easily scratched when in contact with the outside, and is easily covered with dust, affecting the clarity of the sight glass.

[0007] According to one aspect, at least one embodiment of the present invention provides a visible oxygen lance for blast furnace start-up, comprising:

[0008] An oxygen lance housing, wherein a flow channel is provided in the middle of the oxygen lance housing, and an oxygen transmission pipe and a compressed air transmission pipe communicating with the flow channel are fixedly connected to the bottom end of the oxygen lance housing.

[0009] The feedback plate has a feedback lens embedded in its center. Multiple locking rods are fixedly connected to the edge of the feedback plate near the oxygen lance housing. A quick-release assembly is installed at the end of the oxygen lance housing near the feedback plate. The quick-release assembly is used to cooperate with the locking rods to position the feedback plate.

[0010] A protective component is mounted on the side of the feedback plate away from the locking rod, and is used to block the feedback lens when the feedback lens is not in use.

[0011] For example, in a visual oxygen lance for blast furnace start-up provided in at least one embodiment of this utility model, the quick-assembly assembly includes:

[0012] The bearing ring is fixedly connected to one end of the oxygen lance housing near the feedback plate. The quick-release assembly has a locking ring rotatably connected inside. One side of the locking ring has a pressure groove corresponding to the locking rod. Both ends of the pressure groove are provided with insertion holes and locking holes, and the locking rod is engaged with the locking hole.

[0013] For example, in a visible oxygen lance for blast furnace start-up provided in at least one embodiment of this utility model, the protective component includes:

[0014] A mounting frame is fixedly connected to the top of the feedback plate. A positioning shaft is fixedly connected to the middle of the mounting frame. A guide plate is rotatably connected to the outer side of the positioning shaft. A shielding plate is fixedly connected to the bottom of the guide plate.

[0015] A limiting rod is fixedly connected inside the mounting frame. A limiting seat is movably connected to the side of the guide plate near the limiting rod, and one end of the limiting seat is slidably connected to the outside of the limiting rod. Both ends of the outside of the limiting rod are wound with helical springs, and both ends of the helical springs are fixedly connected to the mounting frame and the limiting seat, respectively.

[0016] For example, in at least one embodiment of the present invention, a visible oxygen lance for blast furnace start-up is provided, which further includes: flow valves and pressure gauges are installed on the outer sides of both the oxygen transmission pipe and the compressed air transmission pipe.

[0017] For example, in at least one embodiment of the present invention, a visible oxygen lance for blast furnace start-up is provided, which further includes: a reference hole is provided on the side of the feedback plate near the oxygen lance housing, and a reference rod adapted to the reference hole is fixedly connected to one side edge of the bearing ring, and the reference rod is inserted into the reference hole.

[0018] For example, in at least one embodiment of the present invention, a visible oxygen lance for blast furnace start-up further includes: the height of the pressure groove is less than the diameter of the locking rod, the diameter of the insertion hole is greater than the diameter of the locking rod, and the diameter of the locking hole is adapted to the diameter of the locking rod.

[0019] For example, in at least one embodiment of the present invention, a visible oxygen lance for starting a blast furnace is provided, which further includes: a limiting plate fixedly connected to one end of the locking rod, and the diameter of the limiting plate is larger than the diameter of the locking hole.

[0020] For example, in at least one embodiment of the present invention, a visible oxygen lance for blast furnace start-up is provided, which further includes: a protective pad is fixedly connected to the edge of the shield near the feedback lens, and a sealing strip is fixedly connected to the edge of the protective pad.

[0021] The beneficial effects of the embodiments of this utility model are as follows:

[0022] In this utility model, through the structural cooperation of the protective components, the controllable rotation of the baffle plate can form an effective protection for the feedback lens when it is not in use, preventing dust or foreign objects from contacting the feedback lens and affecting its clarity, thereby ensuring the application effect of the feedback lens.

[0023] In this invention, the combination of locking rod and quick-installation assembly ensures the stability of the feedback board assembly while improving the efficiency of installation and disassembly, making the whole process more convenient. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a visible oxygen lance for blast furnace start-up in one embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the separation structure of the locking rod and the quick-release assembly in the embodiment;

[0027] Figure 3 for Figure 1 A schematic diagram of the quick-installation component in the embodiment;

[0028] Figure 4 for Figure 3 A schematic diagram of the separation structure of the positioning shaft and the guide plate in the embodiment;

[0029] Figure 5 for Figure 3 The embodiment shows a schematic diagram of the assembly structure of the helical spring.

[0030] In the diagram: 1. Oxygen lance housing; 2. Flow channel; 3. Oxygen transmission pipe; 4. Compressed air transmission pipe; 5. Feedback plate; 6. Feedback lens; 7. Locking rod; 8. Quick-release assembly; 9. Protective assembly; 10. Bearing ring; 11. Locking ring; 12. Pressure groove; 13. Insertion hole; 14. Locking hole; 15. Mounting bracket; 16. Positioning shaft; 17. Guide plate; 18. Baffle plate; 19. Limiting rod; 20. Limiting seat; 21. Helical spring; 22. Flow valve; 23. Pressure gauge. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0032] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-5As shown, it illustrates a visible oxygen lance for blast furnace start-up in one embodiment of this utility model.

[0038] In some examples, including:

[0039] The oxygen lance housing 1 has a flow channel 2 in the middle, and the bottom end of the oxygen lance housing 1 is fixedly connected to an oxygen transmission pipe 3 and a compressed air transmission pipe 4 that communicate with the flow channel 2.

[0040] Feedback plate 5, feedback lens 6 is embedded in the middle of feedback plate 5, multiple locking rods 7 are fixedly connected to the edge of feedback plate 5 near oxygen lance housing 1, quick-release assembly 8 is assembled at the end of oxygen lance housing 1 near feedback plate 5, quick-release assembly 8 is used to cooperate with locking rods 7 to position feedback plate 5.

[0041] The protective component 9 is mounted on the side of the feedback plate 5 away from the locking rod 7, and is used to block the feedback lens 6 when it is not in use.

[0042] For example, such as Figure 2 As shown, both the oxygen transmission pipe 3 and the compressed air transmission pipe 4 are equipped with flow valves 22 and pressure gauges 23 on their outer sides. The flow valves 22 can control the flow rate inside the compressed air transmission pipe 4 and the feedback plate 5, and the pressure gauges 23 can monitor the gas pressure inside the oxygen transmission pipe 3 and the compressed air transmission pipe 4 in real time.

[0043] For example, such as Figure 3 As shown, the quick-installation component 8 includes:

[0044] The bearing ring 10 is fixedly connected to one end of the oxygen lance housing 1 near the feedback plate 5. The quick-release assembly 8 is rotatably connected to a locking ring 11. One side of the locking ring 11 is provided with a pressure groove 12 corresponding to the locking rod 7. Both ends of the pressure groove 12 are respectively provided with an insertion hole 13 and a locking hole 14, and the locking rod 7 is engaged with the locking hole 14.

[0045] For example, such as Figure 3 and Figure 5 As shown, a reference hole is provided on the side of the feedback plate 5 near the oxygen lance housing 1. A reference rod that is compatible with the reference hole is fixedly connected to one side edge of the bearing ring 10, and the reference rod is inserted into the reference hole. By setting the reference hole and the reference rod, before assembling the feedback plate 5, the reference hole is aligned with the reference rod, and the feedback plate 5 is pressed. When the reference rod is inserted into the reference hole, the assembly position of the feedback plate 5 can be guided, avoiding repeated adjustments to the feedback plate 5.

[0046] For example, such as Figure 3As shown, the height of the pressure groove 12 is less than the diameter of the locking rod 7, the diameter of the insertion hole 13 is greater than the diameter of the locking rod 7, and the diameter of the locking hole 14 is adapted to the diameter of the locking rod 7. By changing the height of the pressure groove 12 and the diameter of the locking rod 7, when the locking rod 7 moves from the insertion hole 13 into the pressure groove 12, it can squeeze the pressure groove 12, causing the pressure groove 12 to deform. When the locking rod 7 moves into the locking hole 14, the pressure groove 12 can recover because it loses the squeeze, thus locking the locking rod 7 inside the locking hole 14.

[0047] More specifically, the locking ring 11 is made of a deformable material;

[0048] For example, such as Figure 5 As shown, a limiting piece is fixedly connected to one end of the locking rod 7, and the diameter of the limiting piece is larger than the diameter of the locking hole 14. By setting the limiting piece, when the locking rod 7 is located inside the locking hole 14, the limiting piece can limit the locking rod 7 and prevent the locking rod 7 from coming off the locking hole 14.

[0049] like Figure 4 As shown, it illustrates the protective component 9 in another embodiment of the present invention.

[0050] In some examples, protection component 9 includes:

[0051] Mounting frame 15 is fixedly connected to the top of feedback plate 5. A positioning shaft 16 is fixedly connected to the middle of mounting frame 15. A guide plate 17 is rotatably connected to the outer side of positioning shaft 16. A baffle plate 18 is fixedly connected to the bottom of guide plate 17.

[0052] The limiting rod 19 is fixedly connected inside the mounting frame 15. The guide plate 17 is movably connected to the limiting seat 20 on the side near the limiting rod 19, and one end of the limiting seat 20 is also slidably connected to the outside of the limiting rod 19. Both ends of the outside of the limiting rod 19 are wound with helical springs 21, and the two ends of the helical springs 21 are fixedly connected to the mounting frame 15 and the limiting seat 20 respectively.

[0053] For example, such as Figure 4 As shown, a protective pad is fixedly connected to the edge of the shield 18 near the feedback lens 6, and a sealing strip is fixedly connected to the edge of the protective pad. The protective pad can protect the feedback lens 6 when the shield 18 comes into contact with the feedback lens 6, and the sealing strip can seal the connection between the shield 18 and the feedback lens 6, preventing dust from adhering to the feedback lens 6 through the gap between the shield 18 and the feedback lens 6.

[0054] Working principle: First, the feedback plate 5 is attached to the oxygen gun housing 1, and the locking rod 7 is inserted into the insertion hole 13. Then, the locking ring 11 is rotated, which causes the pressure groove 12 to approach the locking rod 7. Since the height of the pressure groove 12 is less than the diameter of the locking rod 7, when the locking ring 11 continues to rotate, it can use the locking rod 7 to squeeze the pressure groove 12, causing the pressure groove 12 to deform until the locking ring 11 can continue to rotate. When the locking rod 7 passes through the pressure groove 12 and reaches the inside of the locking hole 14, the pressure groove 12 will lose its compression and return to its original shape, thereby locking the locking rod 7.

[0055] The front end of the oxygen lance housing 1 is inserted into the taphole of the blast furnace and sealed with refractory. Subsequently, oxygen and compressed air are sent into the flow channel 2 through the oxygen transmission pipe 3 and the compressed air transmission pipe 4, and introduced into the blast furnace through the flow channel 2 to ensure a continuous heat supply in the hearth, eliminate the slag and iron shell inside the hearth, and avoid burn-out of the tuyeres.

[0056] Simultaneously, the baffle plate 18 can be pushed away from the feedback lens 6 under the support of the guide plate 17, so as to expose the feedback lens 6. Then, the personnel can observe the combustion situation inside the blast furnace through the feedback lens 6. When the guide plate 17 rotates, it can drive the limit seat 20 to move at the limit rod 19 and drive the spiral spring 21 to deform. When the baffle plate 18 is released later, the rebound of the spiral spring 21 can cause the baffle plate 18 to block the feedback lens 6, preventing the feedback lens 6 from being scratched by foreign objects and preventing dust from adhering to the feedback lens 6, thereby ensuring the clarity of the image of the feedback lens 6.

[0057] When it is necessary to open the iron tap, rotate the locking ring 11 in the opposite direction to cause the locking rod 7 to move out of the locking hole 14. When the locking rod 7 reaches the inside of the insertion hole 13, the locking rod 7 will be unlocked. Then the feedback plate 5 can be removed from the oxygen lance housing 1. By removing the feedback plate 5, the slag and iron inside the oxygen lance housing 1 can flow out through the flow channel 2, avoiding iron run-out.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A visible oxygen lance for starting a blast furnace, characterized in that, include: Oxygen lance housing (1), with a flow channel (2) in the middle of the oxygen lance housing (1), and an oxygen transmission pipe (3) and a compressed air transmission pipe (4) connected to the bottom of the oxygen lance housing (1) in communication with the flow channel (2). Feedback plate (5), feedback lens (6) is embedded in the middle of the feedback plate (5), and multiple locking rods (7) are fixedly connected to the edge of the feedback plate (5) near the oxygen lance housing (1). A quick-install assembly (8) is assembled at one end of the oxygen lance housing (1) near the feedback plate (5). The quick-install assembly (8) is used to cooperate with the locking rods (7) to position the feedback plate (5). The protective component (9) is mounted on the side of the feedback plate (5) away from the locking rod (7) and is used to block the feedback lens (6) when the feedback lens (6) is not in use.

2. The visible oxygen lance for blast furnace start-up according to claim 1, characterized in that, The quick-installation component (8) includes: The bearing ring (10) is fixedly connected to one end of the oxygen lance housing (1) near the feedback plate (5). The quick-release assembly (8) is rotatably connected to a locking ring (11). One side of the locking ring (11) is provided with a pressure groove (12) corresponding to the locking rod (7). Both ends of the pressure groove (12) are respectively provided with a socket (13) and a locking hole (14), and the locking rod (7) is snapped into the locking hole (14).

3. A visible oxygen lance for blast furnace start-up according to claim 1, characterized in that, The protective component (9) includes: Mounting frame (15) is fixedly connected to the top of feedback plate (5). A positioning shaft (16) is fixedly connected to the middle of the mounting frame (15). A guide plate (17) is rotatably connected to the outer side of the positioning shaft (16). A shielding plate (18) is fixedly connected to the bottom of the guide plate (17). A limiting rod (19) is fixedly connected inside the mounting frame (15). A guide plate (17) is movably connected to a limiting seat (20) on the side near the limiting rod (19). One end of the limiting seat (20) is also slidably connected to the outside of the limiting rod (19). Both ends of the outside of the limiting rod (19) are wound with helical springs (21), and both ends of the helical springs (21) are fixedly connected to the mounting frame (15) and the limiting seat (20) respectively.

4. A visible oxygen lance for blast furnace start-up according to claim 1, characterized in that, Both the oxygen transmission pipe (3) and the compressed air transmission pipe (4) are equipped with flow valves (22) and pressure gauges (23) on their outer sides.

5. A visible oxygen lance for blast furnace start-up according to claim 2, characterized in that, The feedback plate (5) has a reference hole on the side near the oxygen lance housing (1), and a reference rod that is compatible with the reference hole is fixedly connected to one side edge of the bearing ring (10), and the reference rod is inserted into the reference hole.

6. A visible oxygen lance for blast furnace start-up according to claim 2, characterized in that, The height of the pressure groove (12) is less than the diameter of the locking rod (7), the diameter of the insertion hole (13) is greater than the diameter of the locking rod (7), and the diameter of the locking hole (14) is adapted to the diameter of the locking rod (7).

7. A visible oxygen lance for blast furnace start-up according to claim 2, characterized in that, One end of the locking rod (7) is fixedly connected to a limiting piece, and the diameter of the limiting piece is greater than the diameter of the locking hole (14).

8. A visible oxygen lance for blast furnace start-up according to claim 3, characterized in that, A protective pad is fixedly connected to the edge of the shield (18) near the feedback lens (6), and a sealing strip is fixedly connected to the edge of the protective pad.

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