Blast furnace distributing device

Abstract

The invention belongs to the technical field of blast furnace ironmaking, and discloses a blast furnace distributing device. The blast furnace distributing device comprises a box body, a box cover covering the box body, a bracket arranged in the box body and capable of sliding up and down relative to the box body, an arm frame connected with the bracket through a large rotary support, a crank connected with the arm frame, a chute assembly connected with the crank, and a parallel four-bar mechanism arranged on the box cover, the parallel four-connecting-rod mechanism is connected with the bracket, the parallel four-connecting-rod mechanism is constructed to be capable of simultaneously lifting up or pushing down the bracket at four fixing points connected with the bracket, a roller is installed at the end, connected with the arm frame, of the crank, and a rolling groove matched with the roller is formed in the arm frame; when the parallel four-bar mechanism lifts or pushes the bracket to slide up and down relative to the box body, the arm frame is driven to move up and down, so that the crank is driven to rotate, and the crank rotates to drive the chute assembly to swing. According to the blast furnace distributing device, the distributing performance can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace ironmaking, and in particular to a blast furnace distributor. Background Art

[0002] Blast furnace distributor is an indispensable key equipment in the blast furnace ironmaking process. Its main function is to evenly feed the charge into the blast furnace. Traditional distributors mainly include bell-type distributors, bell-valve top charging equipment and bell-free top distributors. The emergence of bell-free top distributors has achieved the complete separation of sealing and distribution. It is sealed by upper and lower sealing valves, and the distribution chute replaces the bell for distribution. It has the advantages of reliable sealing, flexible distribution and long service life, which significantly improves productivity and reduces energy consumption.

[0003] However, the existing bellless furnace top distributor still has some problems in actual use, such as the difficulty of synchronous up and down movement of the bracket in the distributor box slideway, the inconvenience of chute replacement, the need for further improvement of sealing performance, and the risk of water leakage in the cooling system. These problems limit the further improvement of the performance of the distributor, so it is of great practical significance to develop a more efficient and reliable blast furnace distributor. Summary of the invention

[0004] In order to further improve the burden distribution performance, the present invention proposes a blast furnace burden distributor.

[0005] According to the present invention, the blast furnace distributor comprises: a box body and a box cover arranged on the box body, a bracket arranged in the box body and capable of sliding up and down relative to the box body, an arm connected to the bracket through a large slewing support, a crank connected to the arm, a chute assembly connected to the crank, and a parallel four-bar linkage arranged on the box cover, the parallel four-bar linkage is connected to the bracket, the parallel four-bar linkage is constructed to be able to simultaneously lift or push down the bracket at four fixed points connected to the bracket, a roller is installed at one end of the crank connected to the arm, and a rolling groove cooperating with the roller is formed on the arm, and the parallel four-bar linkage lifts or pushes down the bracket to slide up and down relative to the box body, thereby driving the arm to move up and down, thereby driving the crank to rotate, and the rotation of the crank drives the chute assembly to swing.

[0006] Furthermore, the parallel four-bar linkage mechanism includes two cylinder supports arranged relatively on the box cover, hydraulic cylinders respectively connected to the two cylinder supports, and a connecting rod mechanism connected to the driving end of the hydraulic cylinder. The connecting rod mechanism includes four first curved arms respectively connected to the side walls of the box body and distributed at the vertices of a quadrilateral, a long connecting rod connected between the two first curved arms located on the same side, the driving end of the hydraulic cylinder is connected to one of the two first curved arms located on the same side, and second curved arms respectively connected to the first curved arms and located inside the box body, and each second curved arm is connected to the bracket through a hanging connecting rod.

[0007] Furthermore, each first crank arm is connected to the box body through a transmission shaft, the transmission shaft penetrates into the box body and is connected to the second crank arm, and the transmission shaft is supported on the box cover through a bearing.

[0008] Furthermore, the blast furnace distributor also includes an ear shaft swivel sleeve mounted on the center throat of the blast furnace distributor and a driving assembly for driving the ear shaft swivel sleeve to rotate along the center axis of the center throat, the chute assembly is fixed on the ear shaft swivel sleeve, the chute assembly includes an ear shaft box connected to the ear shaft swivel sleeve, and a chute connecting rod fixed on the ear shaft box, and the chute connecting rod is used to connect the chute.

[0009] Furthermore, two bearing seats are fixedly installed on both sides of the lower part of the ear shaft rotating sleeve, the ear shaft box is installed in the bearing seat through the shaft sleeve, the crank is installed on the shaft end of the ear shaft box, and the chute connecting rod is fixed on the ear shaft box.

[0010] Furthermore, the chute connecting rod is installed on the ear shaft box through a small fixed pin and a large fixed pin, the small fixed pin is located above the large fixed pin, and the hole connecting the chute connecting rod and the small fixed pin is an open hole.

[0011] Furthermore, the driving assembly includes a rotary reduction motor arranged on the box cover, a pinion connected to the driving end of the rotary reduction motor, a small slewing support meshing with the pinion, and the small slewing support is fixedly connected to the ear shaft swivel sleeve.

[0012] Furthermore, a labyrinth sealing structure is formed between the box cover and the ear shaft rotating sleeve, and sealed nitrogen is introduced into the labyrinth sealing structure.

[0013] Furthermore, a baffle is connected to the lower part of the ear shaft rotating sleeve, and the baffle is fixed to the lower part of the ear shaft rotating sleeve through a sealing frame. The baffle and the grooves on the side of the bottom plate of the box body constitute a first maze structure. A silicone rubber sealing plate is installed on the outer side of the sealing frame and is pressed by a sealing pressure plate. The silicone rubber sealing plate and the grooves on the bottom plate of the box body constitute a second maze structure. Sealed nitrogen is introduced into the cavity between the first maze structure and the second maze structure.

[0014] Furthermore, a chassis water-cooling pipe is provided on the bottom surface of the box body, and the space between the chassis water-cooling pipes is filled with carbonaceous ramming material and cast with refractory material to form an insulation layer; a throat water-cooling pipe is provided on the inner side of the central throat pipe, and the space between the throat water-cooling pipes is filled with carbonaceous ramming material; an insulation layer is provided on the bottom of the ear shaft swivel, and the insulation layer is filled with insulation filler, and the lower part of the insulation layer is sprayed with refractory castable material.

[0015] Compared with the prior art, the blast furnace distributor of the present invention has the following advantages:

[0016] 1) The present invention realizes the up and down sliding of the bracket through a parallel four-bar linkage mechanism, ensuring high precision and synchronization of the inclination adjustment, and the linkage mechanism driven by the hydraulic cylinder further improves the response speed and control accuracy;

[0017] 2) The present invention adopts a parallel four-bar linkage driven by a hydraulic cylinder, combined with the optimized design of the transmission shaft and the crank arm, to achieve efficient power transmission and stable mechanical operation, and reduce the mechanical failure rate;

[0018] 3) The present invention simplifies the overall structure by integrating the trunnion sleeve with the drive assembly, improves the compactness and reliability of the equipment, and reduces the complexity of installation and maintenance. Through the rotation of the trunnion sleeve and the up and down sliding of the bracket, multi-degree-of-freedom motion control is achieved, the uniformity and flexibility of the material distribution are improved, and the complex working conditions of blast furnace ironmaking can be better adapted.

[0019] 4) The chute connecting rod of the present invention adopts a small fixed pin and a large fixed pin for installation. When replacing, only the large fixed pin needs to be removed to complete the replacement quickly, which greatly shortens the maintenance time and cost;

[0020] 5) The present invention adopts a double labyrinth sealing structure and sealed nitrogen positive pressure protection, combined with a multiple sealing design of a silicone rubber sealing plate, which significantly improves the sealing performance and effectively isolates the gas and dust in the blast furnace. By optimizing the sealing structure and cooling system design, the amount of sealed nitrogen is reduced, the cooling efficiency is improved, the operating cost is reduced, and the reliability and service life of the equipment are significantly improved;

[0021] 6) The present invention adopts a fully closed-loop water cooling system, combined with a multiple insulation design of chassis water cooling pipes, throat water cooling pipes and insulation fillers, which effectively reduces the operating temperature of the blast furnace distributor, eliminates the risk of cooling water leaking into the blast furnace, and significantly improves the reliability and service life of the equipment. Through the protection of insulation fillers, refractory castables and sealed nitrogen, the adaptability of the equipment in harsh environments is significantly improved, and the failure rate is reduced.

[0022] Through a number of innovative designs, the present invention not only improves the accuracy of inclination adjustment, sealing performance and cooling efficiency, but also optimizes maintenance convenience, compact structure and economy. Compared with the prior art, the present invention has achieved a qualitative leap in the overall performance of blast furnace distributors, has significant progress and innovation, and can provide more efficient and reliable equipment support for blast furnace ironmaking processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic front cross-sectional view of the structure of a blast furnace distributor according to an embodiment of the present invention;

[0024] Figure 2 It is a left side cross-sectional schematic diagram of the structure of a blast furnace distributor according to an embodiment of the present invention;

[0025] Figure 3 is a three-dimensional schematic diagram of the structure of a blast furnace distributor according to an embodiment of the present invention;

[0026] Figure 4 is a three-dimensional schematic diagram of a partial structure of a blast furnace distributor according to an embodiment of the present invention, wherein the structure of the box body is not shown;

[0027] Figure 5 is a three-dimensional schematic diagram of a partial structure of a blast furnace distributor according to an embodiment of the present invention, wherein the structure of the trunnion end cover plate is shown;

[0028] Figure 6 is a three-dimensional schematic diagram of a partial structure of a blast furnace distributor according to an embodiment of the present invention, wherein the structures of a small fixed pin and a large fixed pin are shown;

[0029] Figure 7 It is a schematic top view cross-sectional view of the structure of a blast furnace distributor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] Figure 1 and Figure 2 The structure of the blast furnace distributor according to an embodiment of the present invention is shown. Figures 1 to 4 As shown, the blast furnace distributor may include: a box body 25 and a box cover 3 provided on the box body 25, a bracket 23 provided in the box body 25 and capable of sliding up and down relative to the box body 25, an arm 21 connected to the bracket 23 through a large slewing support 22, a crank 11 connected to the arm 21, a chute assembly connected to the crank 11, and a parallel four-bar linkage provided on the box cover 3, the parallel four-bar linkage being connected to the bracket 23, the parallel four-bar linkage being configured to simultaneously lift up or push down the bracket 23 at four fixed points connected thereto, and a roller 40 (such as Figure 4 and Figure 7 As shown), a rolling groove cooperating with the roller 40 is formed on the arm 21, and the parallel four-bar linkage mechanism lifts or pushes down the bracket 23 to slide up and down relative to the box body 25, driving the arm 21 to move up and down, thereby driving the crank 11 to rotate, and the rotation of the crank 11 drives the chute assembly to swing.

[0032] In the blast furnace distributor of the embodiment of the present invention, the parallel four-bar linkage can simultaneously lift or push down the bracket 23 at four fixed points, which can ensure the synchronization of the up and down sliding of the bracket 23, thereby realizing the precise swing of the chute assembly and improving the accuracy of the inclination adjustment of the blast furnace distributor. At the same time, through the rigid connection of the parallel four-bar linkage, the blast furnace distributor is more stable during operation, reducing the inclination deviation caused by mechanical vibration or impact. In addition, precise motion control reduces the wear between mechanical parts and extends the overall service life of the blast furnace distributor. Compared with the prior art, the inclination adjustment of the blast furnace distributor relies on a single drive device or an asynchronous mechanism, resulting in insufficient adjustment accuracy or a high mechanical failure rate. The blast furnace distributor of the embodiment of the present invention significantly improves the reliability and accuracy of the inclination adjustment through the synchronous drive of the parallel four-bar linkage, thereby improving the performance of the blast furnace distributor.

[0033] In such Figure 3 In the preferred embodiment shown, the parallel four-bar linkage may include two cylinder supports 39 arranged relatively on the box cover 3, hydraulic cylinders 38 connected to the two cylinder supports 39, and a connecting rod mechanism connected to the driving end of the hydraulic cylinder 38, wherein the connecting rod mechanism includes four first crank arms 37 rotatably connected to the side walls of the box body 25 and distributed at the vertices of a quadrilateral, a long connecting rod 33 connected between the two first crank arms 37 located on the same side, the driving end of the hydraulic cylinder 38 is connected to one of the two first crank arms 37 located on the same side, and second crank arms 29 rotatably connected to each first crank arm 37 and located inside the box body 25, and each second crank arm 29 is connected to the bracket 23 through a hanging connecting rod 27. In this embodiment, the hydraulic cylinder 38, as a driving element, can provide a strong power output, can respond quickly and realize the up and down movement of the bracket 23, and improve the material distribution efficiency. At the same time, the hydraulic system for controlling the hydraulic cylinder 38 can accurately control the extension and contraction speed and stroke of the cylinder through a proportional valve or a solenoid valve, thereby realizing fine adjustment of the inclination angle. In addition, the layout of the hydraulic cylinder 38 and the connecting rod mechanism is compact, saving space, and facilitating the overall design and installation of the blast furnace distributor. This embodiment adopts hydraulic drive, combined with a parallel four-bar linkage mechanism, which not only improves the adjustment speed, but also enhances the control accuracy.

[0034] Combination Figure 2 and Figure 3As shown, each first crank arm 37 is connected to the box body 25 through a transmission shaft 36, the transmission shaft 36 penetrates into the box body 25 and is connected to the second crank arm 29 through a key, and the transmission shaft 36 can be supported on the box cover 3 through a bearing. The connection between the transmission shaft 36 and the first crank arm 37 and the second crank arm 29 ensures the stability and reliability of power transmission and reduces mechanical failures; at the same time, the structural design of the transmission shaft 36 and the crank arm makes the replacement and maintenance of components more convenient, reducing the maintenance cost of the equipment; in addition, the transmission shaft 36 is supported on the box cover 3 through a bearing, which reduces friction and wear during movement and further improves the accuracy of inclination adjustment.

[0035] Furthermore, if Figure 2 As shown, each second crank arm 29 can be connected to the upper end of four hanging links 27 through a first pin shaft 28, and the lower end of the four hanging links 27 is connected to the support at the upper part of the bracket 23 through a second pin shaft 26.

[0036] In such Figure 1 In the preferred embodiment shown, the blast furnace distributor may also include an ear shaft rotating sleeve 5 sleeved on the central throat pipe 90 of the blast furnace distributor and a driving assembly for driving the ear shaft rotating sleeve 5 to rotate along the central axis of the central throat pipe 90. The chute assembly is fixed on the ear shaft rotating sleeve 5. The chute assembly includes an ear shaft box 7 connected to the ear shaft rotating sleeve 5 and a chute connecting rod 8 fixed on the ear shaft box 7. The chute connecting rod 8 is used to connect the chute 30 (such as Figure 2 In this embodiment, the trunnion rotating sleeve 5 is integrated with the driving assembly, which simplifies the overall structure of the distributor and improves the compactness and reliability of the device. The multi-degree-of-freedom movement of the blast furnace distributor is achieved through the rotation of the trunnion rotating sleeve 5 and the up and down sliding of the bracket 23, which improves the flexibility and uniformity of the distribution.

[0037] like Figure 2 As shown, two blocking wheels 20 can be installed inside the arm 21, and each blocking wheel 20 can slide up and down in the slide groove of the trunnion rotating sleeve 5. Eight sliding blocks 24 can be evenly installed outside the bracket 23, and the eight sliding blocks 24 cooperate with the eight slideways of the box 25 to realize the bracket 23 sliding up and down in the box 25.

[0038] like Figure 5 As shown, the trunnion box 7 is mounted on the trunnion rotating sleeve 5, closed by the trunnion end cover plate 41, and tightened by the end cover plate bolts 42. The closed design of the trunnion rotating sleeve 5 and the trunnion end cover plate 41 effectively prevents the dusty gas in the blast furnace from entering the interior of the distributor, thereby extending the service life of the equipment.

[0039] In such Figure 1In the preferred embodiment shown, two bearing seats 12 can be fixedly installed on both sides of the lower part of the trunnion sleeve 5, each bearing seat 12 can be fixedly connected to the trunnion sleeve 5 by four bolts, the trunnion box 7 can be installed in the bearing seat 12 through the shaft sleeve 10, the crank 11 is installed on the shaft end of the trunnion box 7, and the chute connecting rod 8 is fixed on the trunnion box 7. In this implementation, the bearing seat 12 is fixed to the trunnion sleeve 5 by bolts, providing a stable support for the trunnion box 7, reducing vibration and deviation during operation, and the stable support structure reduces wear between mechanical parts and prolongs the overall service life of the blast furnace distributor. In addition, the bolt connection method also makes the installation and maintenance of the bearing seat 12 and the trunnion box 7 more convenient and quick, reducing the maintenance cost of the equipment.

[0040] In such Figure 1 , Figure 2 as well as Figure 6 In the preferred embodiment shown, the chute connecting rod 8 can be installed on the trunnion box 7 through the small fixed pin 6 and the large fixed pin 9, the small fixed pin 6 is located above the large fixed pin 9, and the hole connecting the chute connecting rod 8 and the small fixed pin 6 is an open hole 81 (such as Figure 2 In this embodiment, the chute connecting rod 8 is installed by means of the small fixing pin 6 and the large fixing pin 9. The design of the opening hole 81 allows the chute connecting rod 8 to be replaced by removing only the large fixing pin 9, which greatly shortens the replacement time, reduces the maintenance workload and cost, and equipment downtime, and improves the economic efficiency of the equipment. The double pin fixing method ensures a reliable connection between the chute connecting rod 8 and the trunnion box 7, preventing the chute 30 from falling off during operation.

[0041] In such Figure 1 In the preferred embodiment shown, the driving assembly may include a rotary reduction motor 1 disposed on a box cover 3, a pinion 2 connected to the driving end of the rotary reduction motor 1, a small slewing support 4 meshing with the pinion 2, and the small slewing support 4 and the ear shaft rotating sleeve 5 may be fixedly connected by threads. In this embodiment, the rotary reduction motor 1 drives the ear shaft rotating sleeve 5 to rotate through the pinion 2 and the small slewing support 4, which can achieve precise rotation speed and angle control and improve the uniformity of the cloth. The gear transmission method has the characteristics of high efficiency and high precision, and can ensure the stable rotation of the ear shaft rotating sleeve 5. The use of the rotary reduction motor 1 reduces the impact of direct drive on the equipment and reduces the wear of mechanical parts.

[0042] In such Figure 2In the preferred embodiment shown, a labyrinth sealing structure 34 may be formed between the box cover 3 and the ear shaft rotating sleeve 5, and sealed nitrogen is introduced into the labyrinth sealing structure. Preferably, the labyrinth sealing structure includes a fixed labyrinth ring installed at the lower end of the box cover, and a first labyrinth structure installed at the upper edge of the ear shaft rotating sleeve 5 and cooperating with the fixed labyrinth ring. The labyrinth sealing structure 34 effectively isolates the gas and dust in the blast furnace from entering the interior of the blast furnace distributor through the multi-layer labyrinth channel and the positive pressure of the sealed nitrogen, thereby improving the sealing performance of the equipment. At the same time, the design of the labyrinth sealing structure also reduces the use of sealed nitrogen and saves operating costs. In addition, good sealing performance reduces the corrosion and wear of internal components and extends the service life of the blast furnace distributor.

[0043] Furthermore, in Figure 1 In the preferred embodiment shown, the lower part of the ear shaft rotating sleeve 5 can be connected with a baffle 16, which can be fixed to the lower part of the ear shaft rotating sleeve 5 by means of a sealing frame 13 and bolts, and the baffle 16 and the groove on the side of the bottom plate of the box body 25 form a first maze structure, and the outer side of the sealing frame 13 can be installed with a silicone rubber sealing plate 15, which is pressed by a sealing pressure plate 14, and the silicone rubber sealing plate 15 and the groove on the bottom plate of the box body 25 form a second maze structure, and sealed nitrogen is introduced into the cavity between the first maze structure and the second maze structure. In this embodiment, the combination of the double maze structure and the silicone rubber sealing plate 15 provides multiple sealing guarantees, further improving the sealing performance of the blast furnace distributor and ensuring the reliability of the equipment in harsh environments. The silicone rubber sealing plate 15 has good elasticity and high temperature resistance, and can adapt to the complex working conditions of the blast furnace distributor. The multiple sealing design also reduces equipment failures caused by sealing failure and reduces maintenance costs.

[0044] In such Figure 1 In the preferred embodiment shown, the bottom surface of the box 25 can be provided with a chassis water cooling pipe 17, and the space between the chassis water cooling pipe 17 can be filled with carbonaceous ramming material and cast with refractory materials to form a heat insulation layer. The heat conducted into the blast furnace distributor from the bottom passes through the first barrier of the refractory castable material, and then is cooled and blocked by the water cooling coil 17, effectively reducing the temperature at the bottom of the blast furnace distributor; the inner side of the central throat 90 can be provided with a throat water cooling pipe 19, and the space between the throat water cooling pipe 19 can be filled with carbonaceous ramming material. The heat conducted into the blast furnace distributor from the central throat 90 passes through the cooling and heat insulation of the water cooling coil 19, effectively reducing the center temperature of the blast furnace distributor. The bottom of the trunnion rotating sleeve 5 can be provided with a heat insulation layer, and the heat insulation filler 18 can be filled in the heat insulation layer, and the lower part of the heat insulation layer is sprayed with refractory castable material. Since only the bottom of the trunnion rotating sleeve 5 is heated, the working temperature of the trunnion rotating sleeve 5 is reduced by the heat insulation filler layer and the refractory castable material layer.

[0045] In this embodiment, the fully closed-loop water cooling system effectively reduces the temperature at the bottom and center of the blast furnace distributor through the multi-circuit circulation of the chassis water cooling pipe 17 and the throat water cooling pipe 19, thereby improving the cooling efficiency of the equipment. The use of thermal insulation fillers and refractory castables reduces the conduction of heat, protects key components from high temperature damage, and extends the service life of the equipment. In addition, the design of the closed-loop water cooling system also eliminates the risk of cooling water leaking into the blast furnace, thereby improving the safety and reliability of the equipment.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A blast furnace distributor, characterized in that: include: The box body and the cover include a box cover arranged on the box body, a bracket arranged in the box body and capable of sliding up and down relative to the box body, an arm connected to the bracket through a large slewing support, a crank connected to the arm, a chute assembly connected to the crank, and a parallel four-bar linkage arranged on the box cover, the parallel four-bar linkage is connected to the bracket, the parallel four-bar linkage is constructed to be able to simultaneously lift or push down the bracket at four fixed points connected to the bracket, a roller is installed at one end of the crank connected to the arm, a rolling groove matching the roller is formed on the arm, and the parallel four-bar linkage drives the arm to move up and down when lifting or pushing the bracket to slide up and down relative to the box body, thereby driving the crank to rotate, and the rotation of the crank drives the chute assembly to swing.

2. The blast furnace distributor according to claim 1, characterized in that: The parallel four-bar linkage mechanism includes two cylinder supports relatively arranged on the box cover, hydraulic cylinders respectively connected to the two cylinder supports, and a connecting rod mechanism connected to the driving end of the hydraulic cylinder. The connecting rod mechanism includes four first curved arms respectively rotatably connected to the side walls of the box and distributed at the vertices of a quadrilateral, a long connecting rod connected between the two first curved arms located on the same side, the driving end of the hydraulic cylinder is connected to one of the two first curved arms located on the same side, and second curved arms respectively rotatably connected to each of the first curved arms and located inside the box, and each of the second curved arms is connected to the bracket through a hanging connecting rod.

3. The blast furnace distributor according to claim 2, characterized in that: Each of the first crank arms is connected to the box body through a transmission shaft, the transmission shaft penetrates into the box body and is connected to the second crank arm, and the transmission shaft is supported on the box cover through a bearing.

4. The blast furnace distributor according to claim 2, characterized in that: The blast furnace distributor also includes an ear shaft swivel sleeve mounted on the central throat of the blast furnace distributor and a driving assembly for driving the ear shaft swivel sleeve to rotate along the central axis of the central throat, the chute assembly is fixed on the ear shaft swivel sleeve, the chute assembly includes an ear shaft box connected to the ear shaft swivel sleeve, and a chute connecting rod fixed on the ear shaft box, and the chute connecting rod is used to connect the chute.

5. The blast furnace distributor according to claim 4, characterized in that: Two bearing seats are fixedly installed on both sides of the lower part of the ear shaft rotating sleeve, the ear shaft box is installed in the bearing seat through the shaft sleeve, the crank is installed on the shaft end of the ear shaft box, and the chute connecting rod is fixed on the ear shaft box.

6. The blast furnace distributor according to claim 5, characterized in that: The chute connecting rod is installed on the ear shaft box through a small fixed pin and a large fixed pin, the small fixed pin is located above the large fixed pin, and the hole connecting the chute connecting rod and the small fixed pin is an open hole.

7. The blast furnace distributor according to claim 4, characterized in that: The driving assembly includes a rotary reduction motor arranged on the box cover, a pinion connected to the driving end of the rotary reduction motor, a small slewing support meshing with the pinion, and the small slewing support is fixedly connected to the ear shaft swivel sleeve.

8. The blast furnace distributor according to claim 4, characterized in that: A labyrinth sealing structure is formed between the box cover and the ear shaft rotating sleeve, and sealed nitrogen is introduced into the labyrinth sealing structure.

9. The blast furnace distributor according to claim 8, characterized in that: A baffle is connected to the lower part of the ear shaft rotating sleeve, and the baffle is fixed to the lower part of the ear shaft rotating sleeve through a sealing frame. The baffle and the groove on the side of the bottom plate of the box body form a first maze structure. A silicone rubber sealing plate is installed on the outer side of the sealing frame and is pressed by a sealing pressure plate. The silicone rubber sealing plate and the groove on the bottom plate of the box body form a second maze structure. Sealed nitrogen is introduced into the cavity between the first maze structure and the second maze structure.

10. The blast furnace distributor according to claim 4, characterized in that: A chassis water-cooling pipe is arranged on the bottom surface of the box body, and the space between the chassis water-cooling pipes is filled with carbonaceous ramming material and cast with refractory material to form an insulation layer; a throat water-cooling pipe is arranged on the inner side of the central throat pipe, and the space between the throat water-cooling pipes is filled with carbonaceous ramming material; an insulation layer is arranged on the bottom of the ear shaft swivel, and the insulation layer is filled with insulation filler, and the lower part of the insulation layer is sprayed with refractory castable material.

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