Adjustable tuyere of blast furnace

Abstract

The utility model discloses an adjustable tuyere of a blast furnace, which belongs to the technical field of steel-making blast furnaces and comprises a steel-making blast furnace, a hearth, a furnace lining, a hot air pipe, an air supply outlet, a tuyere large sleeve, a tuyere medium sleeve and a tuyere small sleeve, the hearth is arranged in the steel-making blast furnace, the furnace lining is arranged in the inner wall of the steel-making blast furnace, and the tuyere large sleeve is mounted at the tuyere of the steel-making blast furnace through a support. A tuyere medium sleeve is installed on one side of the tuyere large sleeve through bolts, a tuyere small sleeve is installed on one side of the tuyere medium sleeve through bolts, a hot air pipe is arranged outside the steelmaking blast furnace, and the end of the hot air pipe is connected with an air supply outlet through a high-temperature-resistant hose. The adjusting mechanism is arranged, the electric cylinder, the air supply rubber ring, the high-temperature-resistant elastic connecting face and the heat insulation cover are used in cooperation, the size of the air outlet of the air port can be adjusted according to requirements, the air outlet amount is effectively controlled, and the steel making work has pertinence.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steelmaking blast furnace, concretely is a blast furnace adjustable tuyere. BACKGROUND

[0002] The blast furnace is made of steel plate, and the inside of the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom, namely, the furnace throat, the furnace shaft, the furnace waist, the furnace belly, and the furnace cylinder. During operation, hot air is supplied to the inside of the blast furnace through an external hot air pipe. The component for supplying hot air is the blast furnace tuyere, which is composed of a large tuyere sleeve, a middle sleeve, and a small sleeve.

[0003] After research and analysis, it was found that the outer wall of the existing blast furnace small sleeve is easily scratched by falling iron slag inside the blast furnace, causing wear and tear. Moreover, due to the high temperature inside the blast furnace, the small sleeve outside the blast furnace is easily affected by high temperature, reducing its service life. Furthermore, the existing blast furnace supplies hot air to the inside of the blast furnace through a hot air pipe, and lacks a regulating component for the air output during the delivery process, making it impossible to regulate the hot air output. Additionally, during the delivery of hot air, the hot air contains a large amount of dust particles, which can easily mix with the steel during the steelmaking process, reducing the purity of the steel. INNOVATION CONTENT

[0004] The purpose of the utility model is to solve the problems of lack of dust filtration, low service life of the small sleeve, and inability to regulate the air output, and to provide a blast furnace adjustable tuyere.

[0005] The technical solution adopted by the utility model is as follows: a blast furnace adjustable tuyere, including a steelmaking blast furnace, a hearth, a furnace lining, a hot air pipe, a air supply port, a tuyere large sleeve, a tuyere middle sleeve, and a tuyere small sleeve, the inside of the steelmaking blast furnace is provided with a hearth, the inside of the steelmaking blast furnace is provided with a furnace lining, the tuyere large sleeve is installed on the tuyere of the steelmaking blast furnace through a support, the tuyere middle sleeve is installed on one side of the tuyere large sleeve through bolts, the tuyere small sleeve is installed on one side of the tuyere middle sleeve through bolts, the outside of the steelmaking blast furnace is provided with a hot air pipe, the end of the hot air pipe is connected with the air supply port through a high-temperature-resistant hose, the inside of the tuyere middle sleeve is provided with a regulating mechanism that can regulate the air output, the inside of the tuyere small sleeve is provided with a protection mechanism that can protect the tuyere small sleeve, and the inside of the tuyere large sleeve is provided with a filter mechanism that can filter the dust particles in the hot air.

[0006] The regulating mechanism includes an electric cylinder, an air supply rubber ring, a high-temperature-resistant elastic connecting surface, and a heat shield. The inside walls of the tuyere middle sleeve on both sides are each provided with an electric cylinder. An air supply rubber ring is connected between the two electric cylinders. A heat shield is connected between the air supply rubber ring and the electric cylinder. A high-temperature-resistant elastic connecting surface is connected between the air supply rubber ring and the air inlet of the tuyere middle sleeve.

[0007] Wherein, the protection mechanism includes inner cavity, rubber ring, protective plate, protective pad, heat resistance layer, wherein, the tuyere small set both sides of the outer wall is provided with inner cavity, the inner cavity is elastically connected with the protective plate through the rubber ring, and the protective plate and the inner cavity are connected through the high temperature resistant elastic connecting surface, and the rubber ring is annularly arranged, and the spring is connected on both sides of the inner wall of the rubber ring, the surface of the protective plate is provided with a protective pad, and the inner wall of the tuyere small set is provided with a heat resistance layer.

[0008] Wherein, the filter mechanism includes fitting along groove, clamping groove, fitting along, clamping block, filter core, wherein, the tuyere large set end is provided with fitting along groove, the inner cavity of the fitting along groove is provided with clamping groove on both sides, the outer edge of the air supply port is provided with fitting along, and the fitting along groove and the fitting along are fitted, the clamping block is elastically connected on both sides of the fitting along through the spring telescopic rod, the clamping groove and the clamping block are fitted and connected, the clamping block is connected with the pull ring through the connecting rope, the pull ring is guided through the guide wheel, and extends to the outside of the air supply port, the filter core is movably installed in the air supply port through the bolt, and the mesh size of the filter screen of the filter core is 100.

[0009] Wherein, the material of the air supply ring, the protective pad and the heat resistance layer is high temperature resistant rubber material.

[0010] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present utility model are:

[0011] 1、In the utility model, by setting the adjusting mechanism, by the cooperation of the electric cylinder, the air supply ring, the high temperature resistant elastic connecting surface and the heat shield, the size of the air outlet of the tuyere can be adjusted according to the demand, the air volume can be effectively controlled, and the steelmaking work is targeted.

[0012] 2、In the utility model, by setting the protection mechanism, by the cooperation of the inner cavity, the rubber ring, the protective plate, the protective pad and the heat resistance layer, the tuyere small set installed in the blast furnace can be protected against high temperature and wear, the protection performance and service life of the tuyere small set in the blast furnace can be effectively improved.

[0013] 3、In the utility model, by setting the filter mechanism, by the cooperation of the fitting along groove, the clamping groove, the fitting along, the clamping block and the filter core, the dust particles in the hot air blown into the blast furnace can be filtered, a large amount of dust can be prevented from entering the blast furnace to affect the purity of the steelmaking, and the filter core can be conveniently disassembled and assembled, which is simple to operate. ACCURACY

[0014] Figure 1 It is the overall perspective structure schematic diagram of the utility model;

[0015] Figure 2 It is the local perspective structure schematic diagram of the utility model;

[0016] Figure 3 For the utility model Figure 2 The enlarged structure schematic diagram of B place in the middle;

[0017] Figure 4 For the utility model Figure 2 The enlarged structure schematic diagram of B place in the middle;

[0018] Figure 5 It is the partial solid body explosion structure schematic diagram of the utility model.

[0019] Mark: 1, steel blast furnace;101, hearth;102, furnace lining;103, hot blast pipe;1031, air supply port;2, air port big cover;201, air port middle cover;202, air port small cover;3, electric cylinder;301, air supply rubber ring;302, high-temperature-resistant elastic connecting surface;303, heat shield;4, inner cavity;401, rubber ring;402, protection plate;403, protection pad;5, heat resistance layer;6, fitting along groove;601, clamping groove;7, fitting along;701, clamping block;8, filter element. Specific implementation

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment one:

[0022] Reference Figures 1-5 A blast furnace adjustable air port, including steel blast furnace 1, hearth 101, furnace lining 102, hot blast pipe 103, air supply port 1031, air port big cover 2, air port middle cover 201, air port small cover 202, the inside of steel blast furnace 1 is provided with hearth 101, the inside of the inner wall of steel blast furnace 1 is provided with furnace lining 102, the air port of steel blast furnace 1 is provided with air port big cover 2 through support, one side of air port big cover 2 is provided with air port middle cover 201 through bolt, one side of air port middle cover 201 is provided with air port small cover 202 through bolt, the outside of steel blast furnace 1 is provided with hot blast pipe 103, the end of hot blast pipe 103 is connected with air supply port 1031 through high-temperature-resistant hose, air port middle cover 201 is provided with the adjusting mechanism that can adjust the air volume inside, air port small cover 202 is provided with the protection mechanism that can protect air port small cover 202 inside, the inside of air port big cover 2 is only provided with the filter mechanism that can filter the dust particles in hot air;

[0023] The adjusting mechanism comprises the electric cylinder 3, the air supply rubber ring 301, the high-temperature-resistant elastic connecting surface 302 and the heat shield 303. The inner walls on both sides of the air port middle sleeve 201 are respectively provided with the electric cylinder 3. The air supply rubber ring 301 is connected between the two electric cylinders 3. The heat shield 303 is connected between the air supply rubber ring 301 and the electric cylinder 3. The high-temperature-resistant elastic connecting surface 302 is connected between the air supply rubber ring 301 and the air inlet of the air port middle sleeve 201. The worker controls the electric cylinder 3 to stretch and shrink under the protection of the heat shield 303, pulls the air supply rubber ring 301 to change the size of the inner wall, so as to control the air volume of the hot air.

[0024] With reference to Figure 1 、 2 , 3, 5, in the embodiment, the protection mechanism comprises the inner cavity 4, the rubber ring 401, the protection plate 402, the protection pad 403 and the heat resistance layer 5. The outer walls on both sides of the air port small sleeve 202 are respectively provided with the inner cavity 4. The inner cavity 4 is elastically connected with the protection plate 402 through the rubber ring 401. The protection plate 402 and the inner cavity 4 are connected through the high-temperature-resistant elastic connecting surface. The rubber ring 401 is annularly arranged. The inner walls on both sides of the rubber ring 401 are connected with springs. The protection pad 403 is attached to the surface of the protection plate 402. The heat resistance layer 5 is attached to the inner wall of the air port small sleeve 202. The high-temperature iron slag in the steel blast furnace 1 often falls from a high place. The falling iron slag on the surface of the air port small sleeve 202 is easy to cause abrasion of the air port small sleeve 202. The protection pad 403 can reduce the abrasion and damage of the high-temperature iron slag to the air port small sleeve 202. The large iron slag falling can also be unloaded and protected by the protection plate 402 and the rubber ring 401.

[0025] With reference to Figure 1 、 2, 4, 5, in this embodiment, the filtering mechanism includes the along groove 6, the clamping groove 601, the along groove 7, the clamping block 701, the filter core 8, wherein the air port big set 2 end is provided with the along groove 6, the along groove 6 inside both sides are provided with the clamping groove 601, the air inlet 1031 outside is provided with the along groove 7, and the along groove 6 and the along groove 7 are matched, the along groove 7 both sides are elastically connected with the clamping block 701 through the spring telescopic rod, and the clamping groove 601 and the clamping block 701 are matched and connected, and the clamping block 701 bottom is connected with the pull ring through the connecting rope, and the pull ring is guided through the guide wheel, and extends to the air inlet 1031 outside, the air inlet 1031 inside is movably installed with the filter core 8 through the bolt, and the filter screen mesh of the filter core 8 is 100, the staff installs the filter core 8 in the air inlet 1031 through the bolt, the dust particles in the hot air blown into the steel blast furnace 1 are filtered and intercepted by using the filter core 8, then, the clamping block 701 is pulled back to the original position by pulling each pull ring, then the air inlet 1031 is inserted into the air port big set 2 end, so that the along groove 6 and the along groove 7 are matched and connected, then the pull ring is loosened, the clamping block 701 is matched and connected in the clamping groove 601 under the action of the spring telescopic rod, and the connection of the air inlet 1031 is completed.

[0026] Referring to Figures 1-5 , in this embodiment, the material of the air supply rubber ring 301, the protective pad 403 and the heat resistance layer 5 is high temperature resistant rubber material, because the high temperature resistant rubber material has super high temperature resistance and elasticity, so using it as the material of the air supply rubber ring 301, the protective pad 403 and the heat resistance layer 5 can effectively improve the service life of each component in high temperature environment, and can play the high temperature resistant protection role to the inner wall of the air port small set 202 and the shock absorption protection role to the outer wall of the air port small set 202.

[0027] Referring to Figure 1 , 2 , in this embodiment, the electric cylinder 3 is electrically connected with the external power supply through the switch.

[0028] Working principle: first, the staff through the bolt filter core 8 is installed in the air supply port 1031, the use of filter core 8 can be filtered dust particles in the hot air blowing into the blast furnace 1, then, by pulling each pull ring card block 701 back to the original position, then the air supply port 1031 is inserted into the tuyere big set 2 end makes the fit along the groove 6 and fit along 7 fit connection, then loosen the pull ring card block 701 in the spring telescopic rod under the action of pop into the card slot 601 with the fit card, complete the connection of air supply port 1031, then, the staff through the hot air through the hot air pipe 103 into the tuyere big set 2 inside, during, the staff through the control of electric cylinder 3 under the protection of heat shield 303 telescopic, pull the air supply rubber ring 301 deformation change inner wall size, in order to control the hot air outflow, finally, the hot air through the tuyere small set 202 into the blast furnace 1 inside, in the blast furnace 1 inside often have high iron slag falling, falling in the tuyere small set 202 surface easy to tuyere small set 202 cause abrasion, through the protective pad 403 can reduce the high temperature iron slag on tuyere small set 202 caused by abrasion and injury, and larger iron slag falling can also be through the protective plate 402 and rubber ring 401 cooperation unloading force protection.

[0029] The above only for the preferred embodiment of the present application has been described, and is not used to limit the present application, any modification, equivalent replacement and improvement etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A blast furnace adjustable tuyere, comprising a steelmaking blast furnace (1), a hearth (101), a furnace lining (102), a hot blast pipe (103), a blast inlet (1031), a tuyere large sleeve (2), a tuyere middle sleeve (201), a tuyere small sleeve (202), the steelmaking blast furnace (1) is internally provided with a hearth (101), the inner wall of the steelmaking blast furnace (1) is internally provided with a furnace lining (102), the tuyere of the steelmaking blast furnace (1) is provided with a tuyere large sleeve (2) through a support, one side of the tuyere large sleeve (2) is provided with a tuyere middle sleeve (201) through a bolt, one side of the tuyere middle sleeve (201) is provided with a tuyere small sleeve (202) through a bolt, the outside of the steelmaking blast furnace (1) is provided with a hot blast pipe (103), the end of the hot blast pipe (103) is connected with a blast inlet (1031) through a high-temperature-resistant hose, characterized in that: The air port sleeve (201) is internally provided with an adjusting mechanism capable of adjusting the air volume, the air port small sleeve (202) is internally provided with a protection mechanism capable of protecting the air port small sleeve (202), and the air port large sleeve (2) is internally provided with a filtering mechanism capable of filtering dust particles in the hot air. The adjusting mechanism comprises an electric cylinder (3), a air supply rubber ring (301), a high-temperature-resistant elastic connecting surface (302) and a heat shield (303), wherein the air port sleeve (201) is internally provided with an electric cylinder (3) on both sides, the two electric cylinders (3) are connected by an air supply rubber ring (301), the air supply rubber ring (301) and the electric cylinder (3) are connected by a heat shield (303), and the air supply rubber ring (301) and the air inlet of the air port sleeve (201) are connected by a high-temperature-resistant elastic connecting surface (302).

2. An adjustable tuyere for a blast furnace as claimed in claim 1 wherein: The protection mechanism comprises an inner cavity (4), a rubber ring (401), a protection plate (402), a protection pad (403) and a heat-blocking layer (5), wherein the air port small sleeve (202) is provided with an inner cavity (4) on both sides of the outer wall, the inner cavity (4) is elastically connected with a protection plate (402) by a rubber ring (401) inside, the protection plate (402) is provided with a protection pad (403) on the surface, and the air port small sleeve (202) is provided with a heat-blocking layer (5) on the inner wall.

3. An adjustable tuyere for a blast furnace as defined in claim 1, wherein: The filtering mechanism comprises a matching groove (6), a clamping groove (601), a matching edge (7), a clamping block (701) and a filter element (8), wherein the air port large sleeve (2) is provided with a matching groove (6) at the end, the matching groove (6) is provided with a clamping groove (601) on both sides inside, the outer edge of the air supply port (1031) is provided with a matching edge (7), the matching edge (7) is elastically connected with a clamping block (701) on both sides through a spring telescopic rod, and the filter element (8) is movably installed in the air supply port (1031) by a bolt.

4. An adjustable tuyere for a blast furnace as defined in claim 2, wherein: The protection plate (402) and the inner cavity (4) are connected by a high-temperature-resistant elastic connecting surface, the rubber ring (401) is annularly arranged, and springs are connected to the inner walls on both sides of the rubber ring (401).

5. An adjustable tuyere for a blast furnace as defined in claim 3, wherein: The matching groove (6) and the matching edge (7) are matched, the clamping groove (601) and the clamping block (701) are clamped, the mesh size of the filter screen of the filter element (8) is 100, the clamping block (701) is connected with a pull ring at the bottom through a connecting rope, the pull ring is guided by a guide wheel, and extends to the outside of the air supply port (1031).

6. An adjustable tuyere for a blast furnace as defined in claim 3, wherein: The materials of the air supply rubber ring (301), the protection pad (403) and the heat-blocking layer (5) are all high-temperature-resistant rubber materials.

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