Device for accurately controlling mud ramming amount of hydraulic mud gun in front of blast furnace

Abstract

The invention discloses a device for accurately controlling the mud beating amount of a hydraulic mud gun in front of a blast furnace, and relates to the technical field of blast furnace smelting. Comprising a supporting frame plate, a mud discharging plate is fixedly installed on the supporting frame plate, an outlet of the mud discharging plate is in butt joint with an inlet of a mud gun, and a feeding hopper is fixedly installed on the upper end face of the supporting frame plate; a discharging assembly is arranged at the inner bottom of the supporting frame plate, and stemming quantitatively falls into the mud discharging plate through the discharging assembly. A mud discharging plate is fixedly installed on the supporting frame plate, a mounting vertical plate is fixedly installed on the mud discharging plate, a conveying assembly is arranged on the mounting vertical plate, stemming in the discharging assembly rapidly falls into the mud discharging plate through the conveying assembly, and the discharging assembly comprises a U-shaped plate fixedly installed at the bottom of the supporting frame plate. Through cooperative use of the discharging assembly and the conveying assembly, quantitative and accurate throwing and efficient discharging of stemming are achieved, the stemming discharging device has the beneficial effects of being high in precision, stable in operation, flexible to adjust and efficient in discharging, and the overall efficiency of the device is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blast furnace smelting, and specifically to a precise control device for the mud injection amount of a hydraulic mud gun in front of a blast furnace. Background Technique

[0002] In iron and steel enterprises, the production of ironmaking plants is mainly blast furnace production. Among them, the mud gun is an important device in blast furnace operation, mainly used for injecting mud near the iron notch of the blast furnace. The function of the mud gun is to inject mud into the furnace mouth of the blast furnace to form a mud layer, prevent the molten iron from directly contacting the furnace wall, and at the same time play a role in heat insulation and protecting the furnace wall.

[0003] In the prior art, the Chinese patent with the publication number "CN217677610U" discloses a precise control device for the mud injection amount of a hydraulic mud gun in front of a blast furnace. By setting a mud weighing plate and an electric push rod, when the mud for the gun reaches the appropriate weight after being poured onto the mud weighing plate through the feed hopper, the electric push rod drives the extension rod to move, thereby driving the mud weighing plate to move outwards along the slot. At this time, the mud automatically passes through the blanking cylinder and the socket and falls into the docked mud gun. The control of the mud injection amount is convenient and accurate, solving the problem that the existing hydraulic mud gun often cannot control the mud injection amount during mud injection, which in turn leads to the inability to completely block the iron notch and affect the blast furnace effect.

[0004] Currently, the hydraulic mud gun often cannot control the mud injection amount during mud injection, which in turn leads to the inability to completely block the iron notch. To avoid this phenomenon, a precise control device is usually used to control the amount of mud filled in the gun. In the above-described solution, the amount of mud for the gun is controlled by weighing. However, during the operation of the entire device, since the mud for the gun is put in through the feed hopper, the mud will always be in a falling state. Although the mud on the weighing plate can be discharged when it reaches a certain weight, a part of the mud during the falling process will still be discharged, so effective precise feeding cannot be achieved. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a precise control device for the mud injection amount of a hydraulic mud gun in front of a blast furnace, solving the problems mentioned in the above background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] A precise control device for the mud injection amount of a hydraulic mud gun in front of a blast furnace, including a support plate, a mud discharge plate is fixedly installed on the support plate, the outlet of the mud discharge plate is docked with the inlet of the mud gun, and a feed hopper is fixedly installed on the upper end surface of the support plate;

[0008] A blanking assembly is arranged at the inner bottom of the support plate, and through the blanking assembly, the mud for the gun falls into the mud discharge plate quantitatively;

[0009] An installation vertical plate is fixedly installed on the sludge discharge plate, and a conveying assembly is arranged on the installation vertical plate. Through the conveying assembly, the gun clay in the blanking assembly quickly falls into the sludge discharge plate.

[0010] Preferably, the blanking assembly includes a motor fixedly installed at the bottom of the support frame plate. The output shaft of the motor is fixedly installed with a semi-gear. A rotating column is rotatably installed at the inner bottom of the support frame plate. A driven gear is fixedly installed on the side end face of the rotating column. A rotating disk is fixedly installed at the top end of the rotating column. Two blanking ports are fixedly installed on the rotating disk. A quantitative pipe is fixedly communicated with the discharge port of the blanking port.

[0011] Preferably, an L-shaped frame plate is fixedly installed at the inner bottom of the support frame plate and outside the rotating column. An adjusting assembly is arranged on the L-shaped frame plate. Two sleeves are arranged on the adjusting assembly. Installation frames are fixedly installed on the side end faces of the two sleeves. A rotating plate is rotatably installed on the installation frame. A sliding wheel is arranged on the rotating plate. A closing plate is fixedly installed at the end of the rotating disk.

[0012] Preferably, the upper end face of the rotating disk is in contact with the outlet of the feed hopper and the two are in sliding contact. The semi-gear meshes with the driven gear. The two sleeves are respectively slidably installed on the two quantitative pipes. The position of the closing plate is at the outlet of the quantitative pipe.

[0013] Preferably, the adjusting assembly includes an outer ring pipe fixedly installed on the L-shaped frame plate. A positioning ring plate is fixedly installed on the outer ring pipe. A first electric push rod is fixedly installed on the positioning ring plate. A lifting frame is fixedly installed on the output shaft of the first electric push rod. An annular block is fixedly installed on the lifting frame. An adjusting surface is arranged on the lower end face of the annular block. An annular plate is rotatably installed on the upper end face of the annular block. The two quantitative pipes are fixedly installed on the annular plate and the two quantitative pipes are symmetrically arranged.

[0014] Preferably, the lifting frame is slidably installed on the outer ring pipe. The annular block and the annular plate are both slidably installed on the outer ring pipe. The position of the rotating column is inside the outer ring pipe and is rotatably connected to the outer ring pipe.

[0015] Preferably, a limiting horizontal plate is fixedly installed on the rotating column and below the driven gear. A limiting card slot is opened at the end of the limiting horizontal plate. A limiting card plate is fixedly installed on the lower end face of the semi-gear. The end of the limiting card plate is embedded in the limiting card slot.

[0016] Preferably, the conveying assembly includes a first stabilizing plate and a second stabilizing plate fixedly installed on the installation vertical plate. A second electric push rod is fixedly installed on the first stabilizing plate. The output shaft of the second electric push rod is fixedly installed with a pressing block. A bearing is fixedly installed on the lower end surface of the pressing block. A screw rod is fixedly installed on the bearing. A conveying auger is fixedly installed at the bottom end of the screw rod.

[0017] Preferably, the first stabilizing plate is located above the second stabilizing plate. One end of the screw rod away from the bearing penetrates through the second stabilizing plate, and the screw rod is movably installed with the second stabilizing plate. The conveying auger is located above the blanking port.

[0018] The present invention provides a precise control device for the mud discharging amount of a hydraulic mud gun in front of a blast furnace. Compared with the prior art, it has the following beneficial effects:

[0019] 1. In the present invention, the motor drives the half gear to rotate 180 degrees. By the cooperation of the half gear and the driven gear, the driven gear will drive the rotating disk to rotate through the rotating column. Through the 180-degree angle of the rotating disk, it is convenient for the two blanking ports on the rotating disk to be successively located at the outlet of the feed hopper. When the metering pipe and the sleeve filled with gun mud rotate to the specified angle, through the cooperation of the sliding wheel on the rotating plate and the adjusting surface, the closing plate at the outlet position of the metering pipe will open, and the gun mud in the metering pipe and the sleeve will directly fall onto the mud discharging plate. By continuing to rotate the rotating disk, it is ensured that the blanking process can continue and the metered gun mud can be put in place;

[0020] 2. In the present invention, when the half gear and the driven gear are not in contact, the limit clamping plate on the half gear will be rotationally limited in the limit clamping groove on the limit cross plate. Through the installation of the limit cross plate and the rotating column, it can effectively ensure that the rotating disk on the rotating column is in a static state, and at the same time ensure that the gun mud in the feed hopper can smoothly fall into the metering pipe and the sleeve, and it is also convenient for the mud discharged from the other metering pipe and the sleeve to fall onto the mud discharging plate, effectively improving the overall precision and efficiency of the device;

[0021] 3. In the present invention, since the gun mud discharged from the feed hopper will be concentrated in the metering pipe and the sleeve, when it is necessary to adjust the amount of the falling gun mud, the first electric push rod drives the lifting frame to rise, and the lifting frame is used to drive the annular plate on the annular block to rise. The sleeve on the annular plate will slide on the metering pipe. By adjusting the position of the sleeve on the metering pipe, the amount of the falling gun mud can be adjusted very precisely to ensure that the amount of each discharge meets the requirements;

[0022] 4. In the present invention, when the gun clay in the metering tube and the sleeve needs to be quickly discharged onto the mud discharge plate, the second electric push rod drives the lower pressing block to descend. The screw rod on the second stabilizing plate will rotate and descend through the action of the bearing and the downward pressure of the lower pressing block, and the conveying auger on the screw rod is used to quickly discharge the gun clay in the metering tube and the sleeve, reducing the time and difficulty of mud discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the blanking assembly in the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the limiting horizontal plate in the present invention;

[0026] Figure 4 is a cross-sectional view of the rotating disk in the present invention;

[0027] Figure 5 is a schematic diagram of the structure of the annular block in the present invention;

[0028] Figure 6 is a schematic diagram of the structure of the conveying assembly in the present invention;

[0029] Figure 7 is a schematic diagram of the structure of the sleeve in the present invention;

[0030] Figure 8 is a schematic diagram of the structure of the main annular plate in the present invention.

[0031] In the figure: 1, support frame plate; 2, mud discharge plate; 3, feed hopper; 4, installation vertical plate; 5, closing plate; 6, motor; 7, semi-gear; 8, rotating column; 9, driven gear; 10, rotating disk; 11, blanking port; 12, metering tube; 13, L-shaped frame plate; 14, sleeve; 15, installation frame; 16, rotating plate; 17, sliding wheel; 18, outer ring tube; 19, first electric push rod; 20, lifting frame; 21, annular block; 22, adjusting surface; 23, annular plate; 24, limiting horizontal plate; 25, limiting card slot; 26, limiting card plate; 27, first stabilizing plate; 28, second stabilizing plate; 29, second electric push rod; 30, lower pressing block; 31, bearing; 32, screw rod; 33, conveying auger; 34, positioning ring plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-8 , the present invention is a precise control device for the mud discharging amount of a hydraulic mud gun in front of a blast furnace, including a support frame plate 1. A mud discharging plate 2 is fixedly installed on the support frame plate 1. The outlet of the mud discharging plate 2 is docked with the inlet of the mud gun. A feeding hopper 3 is fixedly installed on the upper end surface of the support frame plate 1. The mud gun is a well-known technology to those skilled in the art and will not be specifically described here;

[0034] A blanking assembly is arranged at the inner bottom of the support frame plate 1. Through the blanking assembly, the gun mud is quantitatively dropped into the mud discharging plate 2. The blanking assembly includes a motor 6 fixedly installed at the bottom of the support frame plate 1. The output shaft of the motor 6 is fixedly installed with a semi-gear 7. A rotating column 8 is rotatably installed at the inner bottom of the support frame plate 1. A driven gear 9 is fixedly installed on the side end surface of the rotating column 8. A rotating disc 10 is fixedly installed at the top of the rotating column 8. Two blanking ports 11 are fixedly installed on the rotating disc 10. A quantitative pipe 12 is fixedly communicated at the discharge port of the blanking port 11. An L-shaped frame plate 13 is fixedly installed at the inner bottom of the support frame plate 1 and outside the rotating column 8. An adjusting assembly is arranged on the L-shaped frame plate 13. Two sleeves 14 are arranged on the adjusting assembly. Mounting frames 15 are fixedly installed on the side end surfaces of the two sleeves 14. A rotating plate 16 is rotatably installed on the mounting frame 15. A sliding wheel 17 is arranged on the rotating plate 16. A closing plate 5 is fixedly installed at the end of the rotating disc 10. The upper end surface of the rotating disc 10 is attached to the outlet of the feeding hopper 3 and is in sliding contact with each other. The semi-gear 7 is engaged with the driven gear 9. The two sleeves 14 are respectively slidably installed on the two quantitative pipes 12. The position of the closing plate 5 is at the outlet of the quantitative pipe 12. A limiting cross plate 24 is fixedly installed on the rotating column 8 and below the driven gear 9. A limiting card slot 25 is opened at the end of the limiting cross plate 24. A limiting card plate 26 is fixedly installed on the lower end surface of the semi-gear 7. The end of the limiting card plate 26 is inlaid with the limiting card slot 25;

[0035] The adjusting assembly includes an outer ring tube 18 fixedly installed on the L-shaped frame plate 13. A positioning ring plate 34 is fixedly installed on the outer ring tube 18. The output shaft of the first electric push rod 19 on the positioning ring plate 34 is fixedly installed with a lifting frame 20. A ring block 21 is fixedly installed on the lifting frame 20. An adjusting surface 22 is arranged on the lower end surface of the ring block 21. A ring plate 23 is rotatably installed on the upper end surface of the ring block 21. Two metering tubes 12 are fixedly installed on the ring plate 23, and the two metering tubes 12 are symmetrically arranged. The lifting frame 20 is slidably installed on the outer ring tube 18. Both the ring block 21 and the ring plate 23 are slidably installed on the outer ring tube 18. The position of the rotating column 8 is inside the outer ring tube 18 and is rotatably connected to the outer ring tube 18. Among them, the position of the sleeve 14 is outside the metering tube 12. When the gunite in the feed hopper 3 is discharged through the discharge port 11, it will directly fall into the metering tube 12 and the sleeve 14. At the same time, according to the needs of personnel, a lubricating fluid can be provided on the inner surfaces of the metering tube 12 and the sleeve 14 to prevent excessive gunite from adhering to the inside of the metering tube 12 and the sleeve 14.

[0036] In this embodiment, the motor 6 drives the half gear 7 to rotate 180 degrees. By using the cooperation between the half gear 7 and the driven gear 9, the driven gear 9 will drive the rotating disk 10 to rotate through the rotating column 8. By rotating the rotating disk 10 by 180 degrees, it is convenient for the two discharge ports 11 on the rotating disk 10 to be successively located at the outlet of the feed hopper 3. When the metering tube 12 and the sleeve 14 filled with gunite rotate to the specified angle, through the cooperation between the sliding wheel 17 on the rotating plate 16 and the adjusting surface 22, the closing plate 5 at the outlet position of the metering tube 12 will open, and the gunite in the metering tube 12 and the sleeve 14 will directly fall onto the mud discharge plate 2. By continuously rotating the rotating disk 10, it is ensured that the feeding process can continue and the metered gunite can be put in place.

[0037] At the same time, when the half gear 7 and the driven gear 9 are not in contact, the limit clamping plate 26 on the half gear 7 will be rotationally limited in the limit card slot 25 on the limit cross plate 24. Through the installation of the limit cross plate 24 and the rotating column 8, it can effectively ensure that the rotating disk 10 on the rotating column 8 remains stationary, and at the same time ensure that the gunite in the feed hopper 3 can smoothly fall into the metering tube 12 and the sleeve 14, and at the same time facilitate the discharge of the mud in the other metering tube 12 and the sleeve 14 onto the mud discharge plate 2, effectively improving the overall accuracy and efficiency of the device.

[0038] Since the clay discharged from the feed hopper 3 will be concentrated in the metering pipe 12 and the sleeve 14, when it is necessary to adjust the amount of falling clay, the lifting frame 20 is driven to rise by the first electric push rod 19. The lifting frame 20 is used to drive the annular plate 23 on the annular block 21 to rise. The sleeve 14 on the annular plate 23 will slide on the metering pipe 12. By adjusting the position of the sleeve 14 on the metering pipe 12, the amount of falling clay can be adjusted very precisely to ensure that the amount of each discharge meets the requirements.

[0039] An installation vertical plate 4 is fixedly installed on the mud discharge plate 2. A conveying assembly is arranged on the installation vertical plate 4. Through the conveying assembly, the clay in the blanking assembly quickly falls into the mud discharge plate 2. The conveying assembly includes a first stabilizing plate 27 and a second stabilizing plate 28 fixedly installed on the installation vertical plate 4. A second electric push rod 29 is fixedly installed on the first stabilizing plate 27. The output shaft of the second electric push rod 29 is fixedly installed with a pressing block 30. A bearing 31 is fixedly installed on the lower end surface of the pressing block 30. A screw rod 32 is fixedly installed on the bearing 31. A conveying auger 33 is fixedly installed at the bottom end of the screw rod 32. The position of the first stabilizing plate 27 is above the second stabilizing plate 28. One end of the screw rod 32 away from the bearing 31 penetrates through the second stabilizing plate 28, and the screw rod 32 is movably installed with the second stabilizing plate 28. The conveying auger 33 is located above the blanking port 11. A spiral hole is opened on the second stabilizing plate 28, and the screw rod 32 is movably installed with the second stabilizing plate 28 through the spiral hole.

[0040] In this embodiment, when the clay in the metering pipe 12 and the sleeve 14 needs to be quickly discharged onto the mud discharge plate 2, the second electric push rod 29 drives the pressing block 30 to descend. The screw rod 32 on the second stabilizing plate 28 will rotate and descend under the action of the bearing 31 and the pressing of the pressing block 30. The conveying auger 33 on the screw rod 32 quickly discharges the clay in the metering pipe 12 and the sleeve 14, reducing the time and difficulty of mud discharge.

[0041] Working principle:

[0042] During use, the clay is put into the interior of the feed hopper 3. The motor 6 drives the half gear 7 to rotate 180 degrees. Using the cooperation between the half gear 7 and the driven gear 9, the driven gear 9 drives the rotating disk 10 to rotate through the rotating column 8. Through the 180-degree angle of the rotating disk 10, it is convenient for the two blanking ports 11 on the rotating disk 10 to be successively located at the outlet of the feed hopper 3. When the metering pipe 12 and the sleeve 14 filled with clay rotate to the specified angle, through the cooperation between the sliding wheel 17 on the rotating plate 16 and the adjusting surface 22, the closing plate 5 at the outlet position of the metering pipe 12 will open. The clay in the metering pipe 12 and the sleeve 14 will directly fall onto the mud discharge plate 2. By continuing to rotate the rotating disk 10, it is ensured that the blanking process can continue and the quantitative clay feeding can be completed.

[0043] Meanwhile, when the half gear 7 is not in contact with the driven gear 9, the limit clamping plate 26 on the half gear 7 will rotate within the limit card slot 25 on the limit cross plate 24. Through the installation of the limit cross plate 24 and the rotating column 8, it can effectively ensure that the rotating disk 10 on the rotating column 8 remains stationary. At the same time, it ensures that the gun clay in the feed hopper 3 can smoothly fall into the metering pipe 12 and the sleeve 14, and also facilitates the discharge of the gun clay in the other metering pipe 12 and the sleeve 14 onto the mud discharge plate 2.

[0044] Since the gun clay discharged from the feed hopper 3 will be concentrated in the metering pipe 12 and the sleeve 14, when it is necessary to adjust the amount of the falling gun clay, the first electric push rod 19 drives the lifting frame 20 to rise. The lifting frame 20 is used to drive the annular plate 23 on the annular block 21 to rise. The sleeve 14 on the annular plate 23 will slide on the metering pipe 12. By adjusting the position of the sleeve 14 on the metering pipe 12, the amount of the falling gun clay can be adjusted very precisely.

[0045] When the gun clay in the metering pipe 12 and the sleeve 14 needs to be quickly discharged onto the mud discharge plate 2, the second electric push rod 29 drives the pressing block 30 to descend. The screw rod 32 on the second stabilizing plate 28 will rotate and descend through the action of the bearing 31 and the downward pressure of the pressing block 30. The conveying auger 33 on the screw rod 32 is used to quickly discharge the gun clay in the metering pipe 12 and the sleeve 14.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace, comprising a support frame plate (1), characterized in that: A mud discharge plate (2) is fixedly mounted on the support frame plate (1), the outlet of the mud discharge plate (2) is butted against the inlet of the mud gun, and a feed hopper (3) is fixedly mounted on the upper end surface of the support frame plate (1); The inner bottom of the support frame plate (1) is provided with a material discharge assembly, through which the taphole mud is quantitatively dropped into the mud discharge plate (2); A mounting vertical plate (4) is fixedly mounted on the mud discharge plate (2), and a conveying assembly is arranged on the mounting vertical plate (4), so that the taphole mud in the material discharge assembly can be quickly dropped into the mud discharge plate (2) through the conveying assembly.

2. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 1, characterized in that: The material discharge assembly comprises a motor (6) fixedly mounted on the bottom of a support frame plate (1), a half gear (7) fixedly mounted on the output shaft of the motor (6), a rotating column (8) rotatably mounted on the inner bottom of the support frame plate (1), a driven gear (9) fixedly mounted on the side end surface of the rotating column (8), a rotating disk (10) fixedly mounted on the top of the rotating column (8), two material discharge ports (11) fixedly mounted on the rotating disk (10), and a quantitative tube (12) fixedly connected to the discharge port of the material discharge port (11).

3. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 2, characterized in that: An L-shaped frame plate (13) is fixedly mounted on the inner bottom of the support frame plate (1) and on the outer side of the rotating column (8); an adjustment component is arranged on the L-shaped frame plate (13); two sleeves (14) are arranged on the adjustment component; mounting frames (15) are fixedly mounted on the side end surfaces of the two sleeves (14); a rotating plate (16) is rotatably mounted on the mounting frame (15); a sliding wheel (17) is arranged on the rotating plate (16); and a closing plate (5) is fixedly mounted on the end of the rotating disk (10).

4. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 3 is characterized in that: The upper end surface of the rotating disk (10) is in contact with the outlet of the feed hopper (3), and the two are in sliding contact. The half gear (7) is meshed with the driven gear (9). The two sleeves (14) are respectively slidably mounted on the two quantitative tubes (12). The closing plate (5) is located at the outlet of the quantitative tube (12).

5. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 3, characterized in that: The adjustment component comprises an outer ring tube (18) fixedly mounted on an L-shaped frame plate (13), a positioning ring plate (34) fixedly mounted on the outer ring tube (18), a first electric push rod (19) fixedly mounted on the positioning ring plate (34), a lifting frame (20) fixedly mounted on the output shaft of the first electric push rod (19), an annular block (21) fixedly mounted on the lifting frame (20), an adjustment surface (22) provided on the lower end surface of the annular block (21), an annular plate (23) rotatably mounted on the upper end surface of the annular block (21), and two quantitative tubes (12) fixedly mounted on the annular plate (23), and the two quantitative tubes (12) are symmetrically arranged.

6. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 5, characterized in that: The lifting frame (20) is slidably mounted on the outer ring tube (18), the annular block (21) and the annular plate (23) are both slidably mounted on the outer ring tube (18), and the rotating column (8) is located inside the outer ring tube (18) and is rotatably connected to the outer ring tube (18).

7. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 3, characterized in that: A limit transverse plate (24) is fixedly mounted on the rotating column (8) and below the driven gear (9), and a limit slot (25) is provided at the end of the limit transverse plate (24). A limit clip plate (26) is fixedly mounted on the lower end surface of the half gear (7), and the end of the limit clip plate (26) is embedded in the limit slot (25).

8. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 5, characterized in that: The conveying assembly comprises a first stabilizing plate (27) and a second stabilizing plate (28) fixedly mounted on the mounting vertical plate (4); a second electric push rod (29) is fixedly mounted on the first stabilizing plate (27); a lower pressing block (30) is fixedly mounted on the output shaft of the second electric push rod (29); a bearing (31) is fixedly mounted on the lower end surface of the lower pressing block (30); a spiral rod (32) is fixedly mounted on the bearing (31); and a conveying auger (33) is fixedly mounted on the bottom end of the spiral rod (32).

9. The device for accurately controlling the mud volume of a hydraulic mud gun in front of a blast furnace according to claim 8, characterized in that: The first stabilizing plate (27) is located above the second stabilizing plate (28), one end of the screw rod (32) away from the bearing (31) passes through the second stabilizing plate (28), and the screw rod (32) and the second stabilizing plate (28) are movably mounted, and the conveying auger (33) is located above the discharge port (11).

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