Blast furnace quantitative feeding device based on blast furnace temperature control management

Abstract

The invention discloses a blast furnace quantitative feeding device based on blast furnace temperature control management, which belongs to the field of metallurgical technology and comprises a distribution cylinder, a preheating cylinder and a hopper installed at the top of the furnace throat, wherein a vent pipe with a spiral channel is rotatably installed in the preheating cylinder; the scheme is to improve the traditional feeding structure, and the hopper furnace charge is dredged and discharged by cooperating with a rotating dredging component and the spiral channel, and then the furnace charge is orderly transmitted downward by the rotating spiral channel, and furnace gas enters the vent pipe through the furnace gas pipe at the furnace throat to preheat the furnace charge transmitted downward, and the preheated furnace charge is dropped into the hopper in a preset period and with a preset amount of feeding, so as to realize quantitative feeding, and the furnace charge discharged from the hopper falls on the distribution device, and is multi-stage screened for furnace charges of different particle sizes through the distribution device and dispersed along the circumference, and the particle size of the furnace charge descending from the middle to the edge is gradually reduced, so as to improve the distribution uniformity, and realize effective control of the blast furnace temperature through quantitative feeding and uniform distribution.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and more particularly to a blast furnace quantitative feeding device based on blast furnace temperature control management. Background Art

[0002] The steel industry is a pillar industry of my country's economy, and coke is the key raw material for smelting steel. In addition to providing thermal energy, coke also plays a role in supporting the skeleton and acting as a reducing agent in the smelting process. In the process of steel smelting, the charge is loaded into the furnace from the top of the blast furnace, and the charge falls directly into the center of the blast furnace. Especially when a large amount of small-particle charge enters the center of the blast furnace, and gradually as the charge falls, the charge particle size in the center becomes smaller, making this part of the area less permeable, affecting the air permeability of the entire furnace, and it is not easy to effectively control the temperature in the blast furnace.

[0003] After searching, the patent number CN110317914B discloses "Blast furnace top distributor for fixed-point charging of scrap steel". The blast furnace top distributor distributes small-grained raw materials as much as possible in the surrounding area of ​​the blast furnace through auxiliary chutes, which will avoid the central dead material column from having poor air permeability due to excessive small-grained raw materials.

[0004] But by the attached Figure 1 It can be seen that the main chute has a certain inclination angle, the material distribution area is set on the inclined inner wall of the main chute, the mesh on the material distribution area is vertically set on the inner wall of the main chute, and the main chute is inclined below the feed port. Most of the raw fuel falling from the feed port will directly fall from the inclined surface of the main chute, resulting in poor separation effect;

[0005] In addition, the outer side of the slewing bearing is connected to a slewing bearing rotating motor through a gear, and the inner side of the slewing bearing is provided with a rotating body with a long strip structure radially. The rotating body is a strip-shaped ring structure. How to ensure that the raw fuel coming down from the feed port can completely fall into the main chute during the rotation of the rotating body, and how to achieve uniform distribution of the circumference. There are certain distribution disadvantages, so it is difficult to effectively control the blast furnace temperature by uniform distribution.

[0006] To this end, we proposed a blast furnace quantitative feeding device based on blast furnace temperature control management to address the above problems. Summary of the invention

[0007] The present invention aims to solve the existing problems and provides a blast furnace quantitative charging device based on blast furnace temperature control management compared with the prior art.

[0008] The object of the present invention can be achieved by the following technical scheme: a blast furnace quantitative feeding device based on blast furnace temperature control management, comprising a silo fixedly installed on the top of the blast furnace, the bottom end of the silo is connected with a preheating cylinder and a distribution cylinder connected up and down, the distribution cylinder is fixedly installed on the top of the blast furnace throat, a vent pipe with a spiral channel sleeved on the outside is rotatably installed inside the preheating cylinder, a connecting plate movably connected to the inner wall of the bottom end of the preheating cylinder is sleeved on the bottom end of the vent pipe, a discharge channel located at the outlet of the lower end of the spiral channel is embedded and installed on the connecting plate, a dredging component extending to the inside of the silo is fixed on the top of the vent pipe, and a driving motor 1 for rotating the dredging component is installed on the top end of the silo;

[0009] A hopper is installed inside the upper end of the distributing cylinder through a weighing platform, and a distributing device is installed inside the lower end of the distributing cylinder for rotational driving. The distributing device includes an upper distributing cover and a lower distributing cover which are butted up and down, and a separation plate located inside the upper distributing cover is fixed to the lower distributing cover through supporting steel bars, and a guide cover is fixed to the bottom end of the separation plate, and a plurality of coarse separation holes corresponding to the positions of the guide cover are opened on the separation plate, and a main chute is fixed to the bottom end of the guide cover.

[0010] Furthermore, the dredging component includes a dredging cone head fixed to the top of the ventilation pipe and penetrating to the discharge port at the bottom end of the silo, and a dredging shaft extending to the top of the silo is fixed to the top of the dredging cone head.

[0011] Furthermore, the dredging cone head is a conical structure which is narrow at the top and wide at the bottom. A discharge gap is reserved between the dredging cone head and the discharge port at the bottom of the silo. The dredging component passing through the center of the silo is fixedly connected to the vent pipe. When the dredging shaft is driven to rotate by a driving motor, the dredging shaft drives the vent pipe and the spiral channel below the dredging cone head to rotate synchronously. On the one hand, it stirs and dredges the charge in the silo, so that the inside of the silo can smoothly fall through the discharge port to the spiral channel under the rotation of the dredging cone head, and then the charge is transported downward in an orderly manner by the rotating spiral channel, which effectively avoids jamming between the charge and the equipment when unloading.

[0012] Furthermore, the discharge channel is connected to the top of the hopper, and a piston located at the outlet of the lower end of the spiral channel is installed at the discharge channel through an electric push rod.

[0013] Furthermore, the weighing platform is provided with a pressure sensor for detecting the weight of the hopper, and the weighing platform is also provided with a valve power assembly for controlling the opening and closing of the discharge end of the hopper. When the weighing platform detects that the discharge amount of the charge in the hopper reaches the preset cycle feeding amount range, the lower end outlet of the spiral channel is closed by the piston in the discharge channel. At the same time, the discharge end of the hopper is opened by the valve power assembly, so that the quantitative charge in the hopper falls to the distributor, which performs uniform distribution processing.

[0014] Furthermore, both sides of the blast furnace throat are connected to furnace gas pipes, and the upper ends of a pair of furnace gas pipes penetrate the upper end wall of the distribution cylinder and extend to the inside of the hopper. A plurality of ventilation holes connected to the interior of the preheating cylinder are provided on the end wall of the ventilation pipe, avoiding the spiral channel and along the spiral direction of the spiral channel.

[0015] Furthermore, the upper fabric cover is a hollow conical structure that is narrow at the top and wide at the bottom, and the lower fabric cover is a hollow conical structure that is butted against the bottom end of the upper fabric cover and is wide at the top and narrow at the bottom.

[0016] Furthermore, the separation plate is a conical disc structure that is narrow at the top and wide at the bottom, and the guide hood is a hollow conical structure that is wide at the top and narrow at the bottom and matches the lower distribution hood structure. An annular chute is formed between the guide hood and the lower distribution hood for conveying large-size charge downward. The charge discharged from the hopper falls on the separation plate, is dispersed on the surface of the separation plate, and large-size charge is screened out. The large-size charge falls downward from the edge of the separation plate and falls from the annular chute to the central area of ​​the blast furnace, while the small-size charge filtered out through the coarse separation holes is introduced into the main chute by the guide hood and falls from the main chute to the edge area outside the central area.

[0017] Furthermore, the lower end of the main chute passes through the lower fabric cover and is arranged downwardly and obliquely toward the edge of the blast furnace. An auxiliary chute is embedded in the bottom end of the main chute and the lower end extends to the outside of the bottom edge of the main chute. A plurality of fine separation holes connected to the auxiliary chute are opened on the bottom end wall of the main chute.

[0018] Furthermore, an internal gear rotatably mounted on the inner wall of the blast furnace is fixedly sleeved on the outer side of the bottom end of the upper distribution cover, a driving box is fixedly mounted on the outer end of the distribution cylinder, and an external gear meshing with the internal gear is fixedly mounted in the driving box through driving motor 2. The distribution device rotates in a circle under the action of driving motor 2, the internal gear and the external gear, so that charges of different particle sizes are dispersed along the circumference after multi-stage screening, thereby further improving the uniformity of distribution.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) This scheme adds a preheating cylinder and a distribution cylinder that are connected to each other between the hopper and the throat of the blast furnace, adds a ventilation pipe with a spiral channel inside the preheating cylinder, and adds a distributor that acts on the bottom of the hopper inside the distribution cylinder. When working, the dredging component drives the spiral channel to rotate together to dredge the charge in the hopper, and then the rotating spiral channel transports the charge downward in an orderly manner. Through the cooperation of the spiral channel, the hopper and the weighing platform, the charge is transported to the hopper in an orderly manner and obtains a preset charging amount within a preset period, thereby realizing quantitative charging. The charge discharged from the hopper falls on the distributor, and the distributor completes multi-stage screening of charges of different particle sizes and disperses them along the circumference. The particle size of the charge descending from the middle to the edge gradually decreases, which not only improves the uniformity of the charge distribution, but also avoids the problem of poor ventilation in the main combustion area caused by the central area where small-size charge descends, thereby realizing effective control of the blast furnace temperature through quantitative charging and uniform charge distribution.

[0021] (2) In this scheme, furnace gas pipes are also connected to both sides of the blast furnace throat. The upper ends of a pair of furnace gas pipes penetrate the upper end wall of the distribution tube and extend to the inner side of the hopper. A plurality of ventilation holes connected to the interior of the preheating tube are opened on the end wall of the ventilation pipe to avoid the spiral channel and along the spiral direction of the spiral channel. High-temperature furnace gas is introduced into the preheating tube. The high-temperature furnace gas is transmitted upward by the ventilation pipe and dispersed to the spiral channel through the plurality of ventilation holes to preheat the furnace charge transmitted downward.

[0022] (3) In summary, the present scheme is to clear and discharge the charge in the hopper by cooperating with the rotating dredging component and the spiral channel, and then the charge is transported downward in an orderly manner by the rotating spiral channel. The furnace gas is introduced into the ventilation pipe through the furnace gas pipe at the furnace throat to preheat the charge transported downward. The preheated charge is dropped into the hopper in a preset period and in a preset amount to achieve quantitative feeding. The charge discharged from the hopper falls on the distributor, and the distributor completes multi-stage screening of charge of different particle sizes and disperses it along the circumference. The particle size of the charge descending from the middle to the edge is gradually reduced, thereby improving the uniformity of the distribution, and achieving effective control of the blast furnace temperature through quantitative feeding and uniform distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention when it is installed on the top of the blast furnace throat;

[0024] Figure 2 It is a partial cross-sectional view of the junction between the silo and the preheating cylinder of the present invention;

[0025] Figure 3 A bottom view of the present invention;

[0026] Figure 4 It is an overall cross-sectional view of the present invention;

[0027] Figure 5It is a cross-sectional view of the preheating cylinder of the present invention;

[0028] Figure 6 Another perspective cross-sectional view of the preheating cylinder of the present invention;

[0029] Figure 7 It is an internal cross-sectional view of the material distributing tube of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the distributor of the present invention;

[0031] Fig. 9 is a cross-sectional view of a distributor of the present invention;

[0032] Fig.10 It is a cross-sectional schematic diagram of the distributor of the present invention when working.

[0033] Description of the numbers in the figure:

[0034] 1. Blast furnace; 2. Silo; 3. Preheating cylinder; 4. Distribution cylinder; 5. Ventilation pipe; 501. Ventilation hole; 502. Connecting plate; 6. Spiral channel; 7. Dredging cone head; 8. Dredging shaft; 9. Discharge channel; 10. Hopper; 11. Weighing stand; 12. Distribution device; 121. Upper distribution cover; 122. Lower distribution cover; 123. Separation plate; 124. Coarse separation hole; 125. Guide cover; 126. Main chute; 127. Auxiliary chute; 128. Fine separation hole; 13. Internal gear; 14. External gear; 15. Furnace gas pipe; 16. Discharge pipe. DETAILED DESCRIPTION

[0035] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0036] Example 1: The present invention discloses a blast furnace quantitative feeding device based on blast furnace temperature control management, please refer to Figure 1 , including a silo 2 fixedly mounted on the top of a blast furnace 1, a preheating cylinder 3 and a distribution cylinder 4 which are connected up and down and fixedly connected to the bottom of the silo 2, the preheating cylinder 3 is fixedly mounted at the discharge port at the bottom of the silo 2, and the distribution cylinder 4 is fixedly mounted on the top of the throat of the blast furnace 1;

[0037] See also Figure 2-Figure 4A vent pipe 5 with a spiral channel 6 externally sleeved is rotatably installed inside the preheating cylinder 3, a connecting plate 502 movably connected to the inner wall of the bottom end of the preheating cylinder 3 is sleeved at the bottom end of the vent pipe 5, and a discharge channel 9 located at the lower end outlet of the spiral channel 6 is embedded and installed at the connecting plate 502, a dredging component extending to the inside of the silo 2 is fixed at the top of the vent pipe 5, a driving motor 1 for rotating the dredging component is installed at the top end of the silo 2, the dredging component includes a dredging cone head 7 fixed to the top of the vent pipe 5 and penetrating to the discharge port at the bottom end of the silo 2, and a dredging shaft 8 extending to the top end of the silo 2 is fixed to the top of the dredging cone head 7.

[0038] The dredging cone head 7 is a conical structure that is narrow at the top and wide at the bottom. A discharge gap is reserved between the dredging cone head 7 and the discharge port at the bottom end of the silo 2. The dredging component that passes through the center of the silo 2 is fixedly connected to the vent pipe 5. When the dredging shaft 8 is driven by a driving motor to rotate, the dredging shaft 8 drives the vent pipe 5 and the spiral channel 6 below the dredging cone head 7 to rotate synchronously. On the one hand, it stirs and dredges the charge in the silo 2, so that the inside of the silo 2 can smoothly pass through the discharge port and fall onto the spiral channel 6 under the rotation of the dredging cone head 7, and then the rotating spiral channel 6 transports the charge downward in an orderly manner, effectively avoiding jamming between the charge and the equipment when unloading.

[0039] See also Figure 4-Figure 6 The discharge channel 9 is connected to the top of the hopper 10. A piston located at the lower end outlet of the spiral channel 6 is installed at the discharge channel 9 through an electric push rod to realize intermittent opening and closing operations of the lower end outlet of the spiral channel 6.

[0040] A hopper 10 located below the preheating cylinder 3 is installed inside the upper end of the distributing cylinder 4 through a weighing platform 11, and a distributor 12 located below the weighing platform 11 is installed inside the lower end of the distributing cylinder 4 through a rotational drive. A pressure sensor for weight detection of the hopper 10 is provided on the weighing platform 11, and a valve power assembly for controlling the opening and closing of the discharging end of the hopper 10 is also provided on the weighing platform 11. When the weighing platform 11 detects that the discharge amount of the charge in the hopper 10 reaches the preset cycle feeding amount range, the lower end outlet of the spiral channel 6 is closed by the piston in the discharge channel 9. At the same time, the discharging end of the hopper 10 is opened by the valve power assembly, so that the quantitative charge in the hopper 10 falls to the distributor 12, and the distributor 12 performs uniform distribution processing.

[0041] Embodiment 2: Based on Embodiment 1, this embodiment optimizes the structure of the distributor 12 and the distribution operation, as follows:

[0042] See also Figure 4 and Figure 7-10The distributor 12 includes an upper distribution cover 121 and a lower distribution cover 122 connected to each other. A separation plate 123 located inside the upper distribution cover 121 is fixed to the lower distribution cover 122 through supporting steel bars. A guide cover 125 is fixed to the bottom of the separation plate 123. A plurality of coarse separation holes 124 corresponding to the positions of the guide cover 125 are opened on the separation plate 123. A main chute 126 penetrating to the bottom of the lower distribution cover 122 and extending downwardly obliquely toward the edge of the blast furnace 1 is fixed to the bottom of the guide cover 125.

[0043] The upper distribution cover 121 is a hollow conical structure that is narrow at the top and wide at the bottom, the lower distribution cover 122 is a hollow conical structure that is connected to the bottom end of the upper distribution cover 121 and is wide at the top and narrow at the bottom, the separation plate 123 is a conical disc structure that is narrow at the top and wide at the bottom, the guide cover 125 is a hollow conical structure that is wide at the top and narrow at the bottom that matches the structure of the lower distribution cover 122, and an annular drop chute for conveying large-size furnace materials downward is formed between the guide cover 125 and the lower distribution cover 122, and the furnace materials discharged from the hopper 10 fall on the separation plate 123, are dispersed on the disc surface of the separation plate 123, and large-size furnace materials are screened out, and the large-size furnace materials fall downward from the edge of the separation plate 123, and fall from the annular drop chute to the central area of ​​the blast furnace 1, and the small-size furnace materials filtered out through the coarse separation hole 124 are introduced into the main chute 126 by the guide cover 125, and fall from the main chute 126 to the edge area outside the central area;

[0044] A plurality of fine separation holes 128 are provided on the bottom wall of the main chute 126, and an auxiliary chute 127 connected with the plurality of fine separation holes 128 and extending at the lower end to the outer side of the bottom edge of the main chute 126 is embedded and installed at the bottom end of the main chute 126, and the discharge port of the auxiliary chute 127 is located outside the side of the discharge port of the main chute 126, and is closer to the inner wall of the blast furnace 1. A section of the auxiliary chute 127 extending toward the outer side of the bottom edge of the main chute 126 is added to the main chute 126. The small-sized charge that falls through the main chute 126 is screened again through the fine separation holes 128, and even smaller-sized charge falls through the fine separation holes 128 to the auxiliary chute 127, and is discharged toward the outermost area along the auxiliary chute 127, while the screened small-sized charge falls through the bottom of the main chute 126 to the edge area near the center area, completing multi-stage screening of charges of different particle sizes, and the particle size of the charge descending from the middle to the edge gradually decreases.

[0045] See also Figure 7 An internal gear 13 is fixedly sleeved on the outside of the bottom end of the upper material distribution cover 121, and a driving box is fixedly installed on the outer end of the material distribution cylinder 4. An external gear 14 meshing with the internal gear 13 is fixedly installed in the driving box through the second driving motor. The distributor 12 rotates in a circle under the action of the second driving motor, the internal gear 13 and the external gear 14, so that the charges of different particle sizes are dispersed along the circumference after multi-stage screening, thereby further improving the uniformity of the material distribution.

[0046] Embodiment 3: Based on Embodiments 1 and 2, this embodiment adds a furnace gas pipe 15 between the throat of the blast furnace 1 and the distribution tube 4, and improves the structure of the vent pipe 5 to realize the preheating of the charge transported in the preheating tube 3 by transmitting the high-temperature furnace gas to the vent pipe 5, as follows:

[0047] See also Figure 2-Figure 4 Both sides of the throat of the blast furnace 1 are externally connected with furnace gas pipes 15, the upper ends of a pair of furnace gas pipes 15 penetrate the upper end wall of the distribution tube 4 and extend to the inner side of the hopper 10, a plurality of ventilation holes 501 connected with the interior of the preheating tube 3 are opened on the end wall of the ventilation pipe 5 avoiding the spiral channel 6 and along the spiral direction of the spiral channel 6, and the outer side of the top of the preheating tube 3 is externally connected with a discharge pipe 16;

[0048] The high-temperature furnace gas is introduced into the preheating cylinder 3 through a pair of furnace gas pipes 15. Since the bottom of the ventilation pipe 5 is connected to the inside of the preheating cylinder 3, the high-temperature furnace gas is transmitted upward by the ventilation pipe 5 and dispersed to the spiral channel 6 through multiple ventilation holes 501, and moves upward along the spiral direction of the spiral channel 6 to preheat the furnace charge transmitted downward, and the discharge pipe 16 is used to discharge the furnace gas transmitted to the top for later exhaust gas treatment.

[0049] In summary, a preheating tube 3 and a distributing tube 4 connected to each other are added between the silo 2 and the throat of the blast furnace 1, and a vent pipe 5 with a spiral channel 6 acting below the discharge port of the silo 2 is added inside the preheating tube 3, and a distributor 12 acting below the hopper 10 is added inside the distributing tube 4, and the vent pipe 5 is connected to the dredging component in the silo 2. In operation, the dredging component and the vent pipe 5 are driven to rotate together by a driving motor, and the dredging cone head 7 and the dredging shaft 8 structure dredge the charge in the silo 2, so that the charge smoothly passes through the discharge port of the silo 2 and falls onto the spiral channel 6, and then the rotating spiral channel 6 transports the charge downward in an orderly manner, effectively avoiding the jamming between the charge and the equipment when the charge is discharged;

[0050] During the process of conveying the charge, the high temperature furnace gas in the blast furnace 1 is introduced into the preheating cylinder 3 through a pair of furnace gas pipes 15, conveyed upward by the vent pipe 5, and dispersed to the spiral channel 6 through a plurality of vent holes 501, so as to preheat the charge conveyed downward;

[0051] The spiral channel 6 cooperates with the hopper 10 and the weighing platform 11, so that the furnace charge is orderly transferred to the hopper 10 and the preset charging amount is obtained within the preset period, so that the material is accurately added. That is, when the weighing platform 11 detects that the discharge amount of the furnace charge in the hopper 10 reaches the preset cycle charging amount range, the piston in the discharge channel 9 closes the outlet at the lower end of the spiral channel 6, and at the same time, the discharge end of the hopper 10 is opened through the valve power component, and the furnace charge discharged from the hopper 10 falls on the distributor 12 for distribution;

[0052] The specific process of charging is as follows: the charge discharged from the hopper 10 falls on the separation plate 123, is dispersed on the surface of the separation plate 123, and the large-size charge is screened out. The large-size charge falls downward from the edge of the separation plate 123 and falls to the central area of ​​the blast furnace 1 through the annular charging trough, while the small-size charge filtered out through the coarse separation hole 124 is introduced into the main chute 126 through the guide cover 125. The small-size charge falling from the main chute 126 is screened again through the fine separation hole 128, and the smaller-size charge passes through the fine separation hole 128. The particles in the holes 128 fall into the auxiliary chute 127 and are discharged toward the outermost area along the auxiliary chute 127, while the screened small-size charge falls through the bottom of the main chute 126 to the edge area near the center area, completing the multi-stage screening of charges of different particle sizes. The particle size of the charge descending from the middle to the edge decreases gradually, and the charge of different particle sizes is screened by the distributor 12 and dispersed along the circumference, thereby improving the uniformity of the distribution and achieving effective control of the blast furnace temperature through quantitative feeding and uniform distribution.

[0053] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A blast furnace quantitative feeding device based on blast furnace temperature control management, comprising a silo (2) fixedly installed on the top of a blast furnace (1), characterized in that: The bottom end of the silo (2) is connected to a preheating cylinder (3) and a distribution cylinder (4) which are connected to each other from top to bottom. The distribution cylinder (4) is fixedly installed on the throat top of the blast furnace (1). A vent pipe (5) with a spiral channel (6) is rotatably installed inside the preheating cylinder (3). The bottom end of the vent pipe (5) is connected to a connecting plate (502) which is movably connected to the inner wall of the bottom end of the preheating cylinder (3). A discharge channel (9) located at the lower end outlet of the spiral channel (6) is embedded and installed on the connecting plate (502). A dredging component extending to the inside of the silo (2) is fixed on the top end of the vent pipe (5). A driving motor 1 for rotating the dredging component is installed at the top end of the silo (2); A hopper (10) is installed inside the upper end of the distribution cylinder (4) through a weighing platform (11); the discharge channel (9) is connected to the top of the hopper (10); a piston located at the lower end outlet of the spiral channel (6) is installed at the discharge channel (9) through an electric push rod; both sides of the throat of the blast furnace (1) are externally connected to furnace gas pipes (15); the upper ends of a pair of furnace gas pipes (15) penetrate the upper end wall of the distribution cylinder (4) and extend to the inner side of the hopper (10); a plurality of ventilation holes (501) are opened on the end wall of the ventilation pipe (5) to avoid the spiral channel (6) and along the spiral direction of the spiral channel (6); A distributor (12) is installed in the lower end of the distribution cylinder (4) for rotational driving, and the distributor (12) comprises an upper distribution cover (121) and a lower distribution cover (122) connected to each other, a separation plate (123) located inside the upper distribution cover (121) is fixed to the lower distribution cover (122) via supporting steel bars, a guide cover (125) with a main chute (126) at the bottom end is fixed to the lower end of the separation plate (123), and a plurality of coarse separation holes (124) corresponding to the positions of the guide cover (125) are opened on the separation plate (123); The upper material distribution cover (121) is a hollow conical structure that is narrow at the top and wide at the bottom; the lower material distribution cover (122) is a hollow conical structure that is connected to the bottom end of the upper material distribution cover (121) and is wide at the top and narrow at the bottom; the separation plate (123) is a conical disc structure that is narrow at the top and wide at the bottom; the guide cover (125) is a hollow conical structure that is wide at the top and narrow at the bottom and matches the structure of the lower material distribution cover (122); the guide cover (125) and the lower material distribution cover (122) are connected to each other. An annular material drop chute is formed between the main chute (126) for conveying large-size charge downwards. The lower end of the main chute (126) passes through the lower material distribution cover (122) and is arranged to be inclined downward toward the edge of the blast furnace (1). The bottom end of the main chute (126) is embedded with an auxiliary chute (127) whose lower end extends to the outer side of the bottom edge of the main chute (126), and a plurality of fine separation holes (128) connected to the auxiliary chute (127) are opened on the bottom end wall of the main chute (126).

2. The blast furnace quantitative feeding device based on blast furnace temperature control management according to claim 1 is characterized in that: The dredging assembly comprises a dredging cone head (7) fixed to the top of the ventilation pipe (5) and penetrating to the discharge port at the bottom end of the silo (2); a dredging shaft (8) extending to the top end of the silo (2) is fixed to the top of the dredging cone head (7).

3. The blast furnace quantitative feeding device based on blast furnace temperature control management according to claim 2 is characterized in that: The dredging cone head (7) is in the shape of a cone that is narrow at the top and wide at the bottom, and a discharge gap is reserved between the dredging cone head (7) and the discharge port at the bottom end of the silo (2).

4. The blast furnace quantitative feeding device based on blast furnace temperature control management according to claim 1, characterized in that: The weighing platform (11) is provided with a pressure sensor for detecting the weight of the hopper (10), and the weighing platform (11) is also provided with a valve power assembly for controlling the opening and closing of the discharge end of the hopper (10).

5. The blast furnace quantitative feeding device based on blast furnace temperature control management according to claim 1, characterized in that: The bottom end of the upper material distribution cover (121) is fixedly sleeved with an internal gear (13) rotatably mounted on the inner wall of the blast furnace (1), and the outer end of the material distribution cylinder (4) is fixedly mounted with a drive box, in which an external gear (14) meshingly engaged with the internal gear (13) is fixedly mounted via a second drive motor.

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