Device for preventing blast furnace tuyere blowpipe from sinking

Abstract

The utility model provides a device for preventing a blast furnace tuyere blowpipe from sinking. The device for preventing the blast furnace tuyere blowpipe from sinking comprises a tuyere large sleeve, a tuyere medium sleeve, a tuyere small sleeve, a supporting boss, a mounting plate and a moving assembly, the tuyere medium sleeve is arranged at the rear end of the tuyere large sleeve, the tuyere small sleeve is arranged at the rear end of the tuyere medium sleeve, the supporting boss is arranged in the tuyere small sleeve, and the mounting plate is arranged in the tuyere small sleeve. The outer diameter of the supporting boss is matched with the inner diameter of the small tuyere sleeve, and the inner diameter of the supporting boss is matched with the outer diameter of a tuyere blowpipe. According to the device for preventing the blast furnace tuyere blowpipe from sinking, the tuyere blowpipe is not easy to sink when the blast furnace is in damping down due to the arrangement of each structure, so that the maintenance and repair period of workers on the blast furnace is prolonged, and the cost of the workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of blast furnace smelting, in particular to a device for preventing the sinking of a blast furnace tuyere blowpipe. BACKGROUND

[0002] The device for preventing the sinking of a blast furnace tuyere blowpipe is provided with an anti-sinking structure between the tuyere blowpipe and a tuyere small sleeve, which prevents the front end of the tuyere blowpipe from falling off due to thermal expansion and contraction when the tuyere blowpipe is not in use for a long time.

[0003] The sinking of the tuyere blowpipe can cause the front end of the tuyere blowpipe and the contact surface of the tuyere small sleeve to fall off, resulting in air leakage and burning, and can also cause the tuyere blowpipe to fail to blow coal and affect the initial coal gas flow in the furnace.

[0004] The sinking of the tuyere blowpipe can cause the front end of the tuyere blowpipe and the contact surface of the tuyere small sleeve to fall off, resulting in air leakage and burning, and can also cause the tuyere blowpipe to fail to blow coal and affect the initial coal gas flow in the furnace. SUMMARY

[0005] The device for preventing the sinking of a blast furnace tuyere blowpipe is provided with an anti-sinking structure between the tuyere blowpipe and a tuyere small sleeve, which prevents the front end of the tuyere blowpipe from falling off due to thermal expansion and contraction when the tuyere blowpipe is not in use for a long time.

[0006] The device for preventing the sinking of a blast furnace tuyere blowpipe comprises a tuyere large sleeve, a tuyere middle sleeve, a tuyere small sleeve, a support protrusion, a mounting plate, and a moving assembly. The tuyere middle sleeve is arranged at the rear end of the tuyere large sleeve, the tuyere small sleeve is arranged at the rear end of the tuyere middle sleeve, the support protrusion is arranged in the tuyere small sleeve and located at one end of the support small sleeve close to the middle sleeve, the outer diameter of the support protrusion matches the inner diameter of the tuyere small sleeve, the inner diameter of the support protrusion matches the outer diameter of the tuyere blowpipe, the mounting plate is arranged at one end of the tuyere large sleeve away from the tuyere middle sleeve, the mounting plate is fixedly connected to the end face of the tuyere large sleeve, and the moving assembly is arranged on the mounting plate and used to move the support protrusion.

[0007] Optionally, the moving assembly comprises a moving rod, a mounting block, a connecting rod, a sliding table, and a driving part. One end of the moving rod is fixedly connected to the end face of the support protrusion close to the tuyere middle sleeve, the other end of the moving rod penetrates through the mounting plate and is slidably connected to the mounting plate, the mounting block is fixedly arranged at the other end of the moving rod away from the support protrusion, the connecting rod is fixedly arranged at the center of the side wall of the mounting block, the sliding table is fixedly arranged at the other end of the connecting rod away from the mounting block, the driving part is arranged on the mounting plate and connected to the sliding table, and the driving part is used to drive the moving rod to move.

[0008] Optionally, the driving part comprises a circular table, a rotating shaft and a roller, the circular table is fixedly arranged on the side of the mounting plate away from the large tuyere sleeve, the rotating shaft is rotatably arranged on the end face of the circular table, the roller is sleeved on the rotating shaft and fixedly connected with the rotating shaft, and a moving groove is formed in the side wall of the roller.

[0009] Optionally, a handle is arranged on the rotating shaft, the handle is fixedly arranged on the end of the rotating shaft away from the circular table and fixedly connected with the end face of the rotating shaft.

[0010] Optionally, a fixing assembly is arranged on the mounting plate, the fixing assembly comprises two fixing plates and two bolts, the two fixing plates are arranged on the two sides of the circular table and fixedly connected with the mounting plate, the two bolts are correspondingly arranged on the two fixing plates, the bolts are threadedly arranged on the fixing plates, thread holes are formed in the side wall of the roller, the two thread holes are correspondingly arranged on the two bolts, and the bolts are threadedly connected with the thread holes.

[0011] Optionally, the support protrusions are arranged in pairs, the support protrusions are arranged opposite to each other and hinged on one side, and the mounting plates are arranged in pairs and correspond to the support protrusions.

[0012] The device has the following beneficial effects:

[0013] The device for preventing the tuyere blowpipe from sinking comprises a large tuyere sleeve, a middle tuyere sleeve, a small tuyere sleeve, a support protrusion, a mounting plate and a moving assembly, the middle tuyere sleeve is arranged at the rear end of the large tuyere sleeve, the small tuyere sleeve is arranged at the rear end of the middle tuyere sleeve, the support protrusion is arranged in the small tuyere sleeve and located at the end of the small sleeve close to the middle sleeve, the outer diameter of the support protrusion is matched with the inner diameter of the small tuyere sleeve, the inner diameter of the support protrusion is matched with the outer diameter of the tuyere blowpipe, the mounting plate is arranged at the end of the large tuyere sleeve away from the middle tuyere sleeve, the mounting plate is fixedly connected with the end face of the large tuyere sleeve, the moving assembly is arranged on the mounting plate and used for moving the support protrusion, the device for preventing the tuyere blowpipe from sinking can prevent the tuyere blowpipe from sinking when the blast furnace is blown down, thereby prolonging the maintenance period of the blast furnace and reducing the labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings are within the scope of the present application.

[0015] Fig. 1 is a structural schematic view of a device for preventing the sinking of the tuyere blowpipe of a blast furnace provided by the present application;

[0016] Fig. 2 is a structural schematic view of a support protruding platform;

[0017] Fig. 3 is a structural schematic view of a driving part.

[0018] Legend of the drawings:

[0019] 1, tuyere large sleeve; 2, tuyere middle sleeve; 3, tuyere small sleeve; 4, support protruding platform; 5, mounting plate; 6, moving assembly; 61, moving rod; 62, mounting block; 63, connecting rod; 64, sliding table; 65, driving part; 651, circular table; 652, rotating shaft; 653, roller shaft; 6531, moving groove; 654, handle; 7, fixing assembly; 71, fixing plate; 72, bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, and not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0021] In this paper, "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] Please refer to Figs. 1-2 The device for preventing the sinking of the tuyere blowpipe of a blast furnace provided by the present application comprises a tuyere large sleeve 1, a tuyere middle sleeve 2, a tuyere small sleeve 3, a support protruding platform 4, a mounting plate 5 and a moving assembly 6.

[0023] The middle tuyere sleeve 2 is arranged at the rear end of the large tuyere sleeve 1, the small tuyere sleeve 3 is arranged at the rear end of the middle tuyere sleeve 2, the support protruding platform 4 is arranged in the small tuyere sleeve 3 and located at one end of the small tuyere sleeve 3 close to the middle tuyere sleeve 2, the outer diameter of the support protruding platform 4 matches the inner diameter of the small tuyere sleeve 3, the inner diameter of the support protruding platform 4 matches the outer diameter of the tuyere blowpipe, the mounting plate 5 is arranged at one end of the large tuyere sleeve 1 away from the middle tuyere sleeve 2, the mounting plate 5 is fixedly connected with the end surface of the large tuyere sleeve 1, and the moving assembly 6 is arranged on the mounting plate 5 and used for moving the support protruding platform 4;

[0024] When the blast furnace is blown down, the worker drives the support protruding platform 4 to move into the small tuyere sleeve 3 through the driving assembly 6, the outer diameter of the support protruding platform 4 matches the inner diameter of the small tuyere sleeve 3 after the support protruding platform 4 is completely moved into the small tuyere sleeve 3, the inner diameter of the support protruding platform 4 matches the outer diameter of the tuyere blowpipe, so that the tuyere blowpipe is not easy to fall off from the contact surface of the small tuyere sleeve.

[0025] In the embodiment, the moving assembly 6 comprises a moving rod 61, a mounting block 62, a connecting rod 63, a sliding table 64 and a driving part 65, one end of the moving rod 61 is fixedly connected with the end surface of the support protruding platform 4 close to the middle tuyere sleeve 2, the other end of the moving rod 61 penetrates through the mounting plate 5 and is slidably connected with the mounting plate 5, the mounting block 62 is fixedly arranged at the other end of the moving rod 61 away from the support protruding platform 4, the connecting rod 63 is fixedly arranged at the center of the side wall of the mounting block 62, the sliding table 64 is fixedly arranged at the other end of the connecting rod 63 away from the mounting block 62, and the driving part 65 is arranged on the mounting plate 5 and connected with the sliding table 64, the driving part 65 is used for driving the moving rod 61 to move;

[0026] When it is needed to blow down, the driving part 63 arranged on the mounting plate 5 is operated, the driving part 63 drives the moving rod 61 to start moving, the moving rod 61 is fixedly connected with the support protruding platform 4, the moving rod 61 drives the support protruding platform 4 to move towards the small tuyere sleeve 3, so that the support of the tuyere blowpipe by the support protruding platform 4 during the blowing down of the blast furnace is realized.

[0027] In the embodiment, the driving part 65 comprises a circular table 651, a rotating shaft 652 and a roller 653, the circular table 651 is fixedly arranged on the side of the mounting plate 5 away from the tuyere large cover 1, the rotating shaft 652 is rotatably arranged on the end face of the circular table 651, the roller 653 is sleeved on the rotating shaft 652 and is fixedly connected with the rotating shaft 652, and a moving groove 6531 is arranged on the side wall of the roller 653, and the sliding table 64 is slidably arranged in the moving groove 6531.

[0028] In the embodiment, the rotating shaft 652 is provided with a handle 654, the handle 654 is fixedly arranged on the end of the rotating shaft 652 away from the circular table 651 and is fixedly connected with the end face of the rotating shaft 652.

[0029] Wherein, the worker rotates the rotating shaft 652 by holding the handle 654, the roller 653 rotates with the rotating shaft 652, so that the sliding table 64 slides on the side wall of the roller 653 along the track of the moving groove 6531, the sliding table 64 drives the mounting block 62 to move, so as to realize the pushing and pulling of the supporting protruding table 4 by the moving rod 61, thereby realizing the support of the tuyere blowing pipe by the supporting protruding table 4 during the idle period.

[0030] In the embodiment, the mounting plate 5 is provided with a fixing assembly 7, the fixing assembly 7 comprises two fixing plates 71 and two bolts 72, the two fixing plates 71 are arranged on the two sides of the circular table 651 and are fixedly connected with the mounting plate 5, the two bolts 72 correspond to the two fixing plates 71, the bolts 72 are threadedly arranged on the fixing plates 71, the side wall of the roller 653 is provided with two threaded holes corresponding to the two bolts 72, and the bolts 72 are in threaded connection with the threaded holes.

[0031] Wherein, when the supporting protruding table 4 moves to the required position, the worker twists the bolt 72, the end of the bolt 72 is threadedly inserted into the threaded hole in the side wall of the roller 653, so that the roller 653 is in a fixed state, thereby ensuring the stability of the device.

[0032] In the embodiment, the supporting protruding table 4 is provided with two, the two supporting protruding tables 4 are oppositely arranged, one side of the two supporting protruding tables 4 is hingedly connected, and the mounting plate 5 is provided with two corresponding to the two supporting protruding tables 4.

[0033] Wherein, the two supporting protruding tables 4 cooperate to realize the overall support of the tuyere blowing pipe, so that the support of the tuyere blowing pipe by the supporting protruding table 4 is more stable.

[0034] The device for preventing the sinking of the tuyere blowpipe of a blast furnace comprises a tuyere large sleeve 1, a tuyere middle sleeve 2, a tuyere small sleeve 3, a support protruding platform 4, a mounting plate 5 and a moving assembly 6, the tuyere middle sleeve 2 is arranged at the rear end of the tuyere large sleeve 1, the tuyere small sleeve 3 is arranged at the rear end of the tuyere middle sleeve 2, the support protruding platform 4 is arranged in the tuyere small sleeve 3 and is located at one end of the tuyere small sleeve 3 close to the middle sleeve 2, the outer diameter of the support protruding platform 4 is matched with the inner diameter of the tuyere small sleeve 3, the inner diameter of the support protruding platform 4 is matched with the outer diameter of the tuyere blowpipe, the mounting plate 5 is arranged at one end of the tuyere large sleeve 1 away from the tuyere middle sleeve 2, the mounting plate 5 is fixedly connected with the end face of the tuyere large sleeve 1, the moving assembly 6 is arranged on the mounting plate 5 and is used for moving the support protruding platform 4, the device for preventing the sinking of the tuyere blowpipe of a blast furnace is not prone to sinking when the blast furnace is blown off, so that the maintenance cycle of the blast furnace is prolonged and the labor cost is reduced.

[0035] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A device for preventing the sinking of a tuyere lance in a blast furnace, characterized in that, The utility model provides a kind of wind port, which comprises A large wind port sleeve; A middle wind port sleeve arranged at the rear end of the large wind port sleeve; A small wind port sleeve arranged at the rear end of the middle wind port sleeve; A support protrusion arranged in the small wind port sleeve and located at the end of the small wind port sleeve close to the middle wind port sleeve, the outer diameter of the support protrusion matches the inner diameter of the small wind port sleeve, and the inner diameter of the support protrusion matches the outer diameter of a wind port blowpipe; A mounting plate arranged at the end of the large wind port sleeve away from the middle wind port sleeve, the mounting plate is fixedly connected with the end face of the large wind port sleeve; A moving assembly arranged on the mounting plate and used for moving the support protrusion.

2. The device for preventing the sinking of the tuyere blowpipe of a blast furnace according to claim 1, characterized in that, The moving assembly comprises a moving rod, a mounting block, a connecting rod, a sliding table and a driving part, one end of the moving rod is fixedly connected with the end face of the support protrusion close to the middle wind port sleeve, the other end of the moving rod away from the support protrusion penetrates through the mounting plate and is slidably connected with the mounting plate, the mounting block is fixedly arranged at the other end of the moving rod away from the support protrusion, the connecting rod is fixedly arranged at the center of the side wall of the mounting block, the sliding table is fixedly arranged at the other end of the connecting rod away from the mounting block, and the driving part is arranged on the mounting plate and connected with the sliding table, and the driving part is used for driving the moving rod to move.

3. The device for preventing the sinking of the tuyere blowpipe of a blast furnace according to claim 2, characterized in that, The driving part comprises a circular table, a rotating shaft and a roller, the circular table is fixedly arranged on the side of the mounting plate away from the large wind port sleeve, the rotating shaft is rotatably arranged on the end face of the circular table, the roller is sleeved on the rotating shaft and fixedly connected with the rotating shaft, and a moving groove is formed in the side wall of the roller, and the sliding table is slidably arranged in the moving groove.

4. The device for preventing the sinking of the tuyere blowpipe of a blast furnace according to claim 3, characterized in that, A handle is arranged on the rotating shaft, the handle is fixedly arranged at the other end of the rotating shaft away from the circular table and fixedly connected with the end face of the rotating shaft.

5. A device for preventing the sinking of a tuyere lance in a blast furnace according to claim 4, characterized in that A fixing assembly is arranged on the mounting plate, the fixing assembly comprises a fixing plate and a bolt, two fixing plates are arranged on the two sides of the circular table respectively and fixedly connected with the mounting plate, two bolts are arranged and correspond to the two fixing plates respectively, the bolt is threadedly arranged on the fixing plate, a threaded hole is formed in the side wall of the roller, two threaded holes are formed and correspond to the two bolts respectively, and the bolt is threadedly matched with the threaded hole.

6. The device for preventing the sinking of the tuyere blowpipe of a blast furnace according to claim 1, characterized by, The support protrusion comprises two support protrusions arranged oppositely, and the mounting plate comprises two mounting plates corresponding to the two support protrusions respectively.

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