Automatic stemming loading device for stokehole clay gun of iron-making blast furnace
By introducing a mud storage bin, a three-edged knife bag breaker, a mud pushing chamber and a mud pushing cylinder structure in front of the iron-making blast furnace, combined with a shark fin knife and an electronic scale, the problems of insufficient safety and automation of mud loading with a mud gun in front of the iron-making blast furnace have been solved, efficient and safe automatic mud loading has been achieved, and equipment costs have been reduced.
Patent Information
- Application Number
- CN202422623444.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The existing mud loading operation of the mud gun in front of the iron-making blast furnace has safety hazards, low efficiency, insufficient automation, and the existing automation equipment is complex, costly, and difficult to unload.
It adopts a mud storage bin, a three-edged knife bag breaking, a mud pushing chamber and a mud pushing cylinder structure, combined with a shark fin knife and an electronic scale to achieve quantitative pushing of mud blocks. The reciprocating motion of the mud pushing cylinder is controlled by a hydraulic system, and automatic mud loading is achieved in combination with remote control operation.
It realizes safe and efficient automatic mud loading, reduces equipment costs, simplifies operating procedures, improves mud loading efficiency and safety, and is suitable for self-assembly and promotion.
Smart Images
Figure CN223397755U_ABST
Abstract
Description
Technical field
[0001] The utility model belongs to the technical field of iron-making blast furnace equipment, and particularly relates to an automatic mud loading device for a mud gun in front of an iron-making blast furnace. [Background Technology]
[0002] Currently, many blast furnace mud guns are still manually loaded. This operation is performed within the taphole dust hood, which is subject to high temperatures, low light levels, and high levels of gas and dust. This makes it highly susceptible to safety accidents and is extremely detrimental to the health of the workers at the taphole. Furthermore, the operation is inefficient, and the amount of mud loaded is not fixed. The loading process is long, which interferes with tapping time, preventing a seamless transition between the north and south tapping stations, hindering process operation and capacity expansion. Improvements are urgently needed, including the development of intelligent technology.
[0003] Existing automation technologies include crawler robots and gravity-based, quantitative feeding methods. These drawbacks include complex equipment, the need for specialized personnel for maintenance, high equipment costs, and the occupation of workspace. Gravity-based, quantitative feeding methods also present challenges in unloading, requiring the collaboration of two or more people, and a lack of automation. [Utility Model Content]
[0004] The utility model aims to provide an automatic mud loading device for a mud gun in front of an ironmaking blast furnace, so as to solve the problems of difficulty in unloading and inability to unload quantitatively in the existing automatic mud loading device.
[0005] The utility model adopts the following technical solutions: an automatic mud loading device for a mud gun in front of an ironmaking blast furnace, comprising a mud storage bin, a top feed port of the mud storage bin for receiving the mud in the mud bag above; a three-edged knife for cutting open the mud bag is provided on the top of the mud storage bin;
[0006] The bottom discharge port of the mud storage bin is connected to a mud pushing chamber; both sides of the mud pushing chamber are open in the horizontal direction; one opening of the mud pushing chamber is connected to the mud inlet of the mud gun bucket through a downwardly inclined chute and a vertical mud drop pipe in sequence; the other opening of the mud pushing chamber is equipped with a mud pushing cylinder that moves back and forth along its axis; a pair of shark fin knives are provided at the end of the mud pushing cylinder close to the mud pushing chamber, and the angle formed between the top ends of the two shark fin knives is 30 degrees;
[0007] Among them, the mud pushing cylinder is used to push a certain amount of gun mud so that the gun mud is loaded into the mud gun mud barrel through the chute and the mud drop pipe.
[0008] Furthermore, the wall surface of the mud pushing cylinder close to one end of the mud pushing chamber is a mud pushing plate, and the end of the mud pushing cylinder away from the mud pushing chamber is sleeved on the outside of a cylindrical slide rail, an oil cylinder is coaxially arranged in the slide rail, and a connecting plate is vertically provided at the end of the piston rod of the oil cylinder;
[0009] An annular baffle is provided inside the mud pushing cylinder, and the connecting plate is used to move back and forth between the baffle and the inner wall of the mud pushing plate to drive the mud pushing cylinder to move back and forth horizontally along the slide rail.
[0010] Furthermore, the connecting plate is threadedly connected to the piston rod through a nut, and a rib plate is provided at the end of the piston rod and located on the outer side of the nut.
[0011] Furthermore, an oil inlet pipe and an oil outlet pipe are connected to the oil cylinder, and the oil source of the oil inlet pipe is drawn from the hydraulic operating room of the furnace platform.
[0012] Furthermore, the bottom of the mud pushing chamber is placed on an electronic scale.
[0013] Furthermore, a dust cover is provided at the bottom of the electronic scale, and heat insulation cotton is provided between the dust cover and the electronic scale.
[0014] The second technical solution adopted by the utility model is a working method of an automatic mud loading device for a mud gun in front of an ironmaking blast furnace, comprising the following contents:
[0015] Place the mud gun barrel under the mud drop pipe, install the movable funnel to the opening of the mud gun barrel, and keep the valve open;
[0016] The mud is loaded by pushing the mud barrel. When the pushed mud is enough to fill 1 / 3 of the mud gun, the mud pushing is stopped and the mud driving is started.
[0017] The mud gun is initialized and mud pushing is started again; when the mud pushed is enough to fill 2 / 3 of the mud gun, mud pushing is stopped and mud driving is started;
[0018] The mud gun is initialized and mud pushing is started again; when the mud pushed is enough to fill the mud gun to 3 / 3, mud pushing is stopped and mud driving is started;
[0019] The mud gun is initialized and mud loading is completed; the valve is closed, the movable funnel is removed, and the power to the mud loading device is turned off.
[0020] The beneficial effects of the present invention are as follows: the present invention can conveniently break the bottom of the mud bag by installing a three-edged knife bag-breaking device at the feeding of the mud storage bin, and the gun mud falls into the mud storage bin, replacing the manual bag-opening operation, and the material unloading speed is very high. A pair of shark fin knives are installed at the front end of the mud pushing barrel, and the upper mud blocks are synchronously cut when the mud pushing cylinder advances and retreats, destroying the arched structure formed by the mud blocks after the cylinder retreats, accelerating the crushing of the mud blocks and descending by their own weight, and improving the efficiency of mud pushing. The bottom of the mud pushing chamber is placed on an electronic scale through a bracket, and the electronic scale can accurately control the total amount of mud loaded in the mud pushing chamber each time. The present invention occupies a small space and is easy to arrange, realizing the true automation of mud loading, and greatly reducing the equipment cost, making it easier to promote, and enterprises with the conditions can assemble and install it by themselves.
Brief Description of the Drawings
[0021] Figure 1This is a structural diagram of an automatic mud loading device for a mud gun in front of an ironmaking blast furnace according to the utility model;
[0022] Figure 2 This is a structural diagram of the mud pushing cylinder and mud pushing cavity of the utility model;
[0023] Figure 3 The utility model is a working flow chart of an automatic mud loading device for a mud gun in front of an ironmaking blast furnace.
[0024] Among them, 1. Oil inlet pipe; 2. Oil cylinder; 26. Oil inlet; 27. Oil outlet; 28. Slide rail; 29. Ear seat;
[0025] 3. Mud pusher; 30. Stopper; 31. Connecting plate; 32. Nut; 33. Rib plate; 34. Countersunk screw; 35. Mud pusher; 36. Piston rod;
[0026] 4. Mud pushing chamber; 5. Fish fin knife; 6. Mud storage bin; 7. Chute; 8. Fixed bucket; 9. Dust hood; 10. Mud drop cylinder; 11. Valve; 12. Movable bucket; 13. Mud gun; 14. Limit rope; 15. Upper limiter; 16. Lower limiter; 17. Counterweight; 18. Bracket; 19. Electronic scale; 20. Insulation cotton; 21. Driving; 22. Mud bag; 23. Three-edged knife; 24. Smart display. [Specific implementation method]
[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.
[0028] The utility model provides an automatic mud loading device for mud guns in front of iron-making blast furnaces, such as Figure 1 As shown, the device comprises an inverted cone-shaped mud storage bin 6, the top feed port of which is used to receive the taphole mud from the upper mud bag 22. A three-edged knife 23 is installed on the top of the mud storage bin 6 for cutting open the mud bag 22. A bag-breaking device with the three-edged knife 23 is installed at the mouth of the mud storage bin 6. A mud bag is hoisted directly above the mud storage bin 6 using a furnace crane 21. The bottom of the lower mud bag is then broken open by the three-edged knife, and the taphole mud falls into the mud storage bin 6, replacing the manual bag-opening operation. A protective cap is also manufactured and installed during maintenance to prevent injury.
[0029] The bottom discharge port of the mud storage bin 6 is connected to a mud pushing chamber 4; both sides of the mud pushing chamber 4 are open in the horizontal direction; wherein, one side of the mud pushing chamber 4 is connected to the mud inlet of the mud gun bucket 13 through a downwardly inclined chute 7 and a vertically arranged mud drop pipe 10 in sequence; the other side of the mud pushing chamber 4 is equipped with a mud pushing cylinder 3 that moves back and forth along its axis; a pair of shark fin knives 5 are provided at one end of the mud pushing cylinder 3 close to the mud pushing chamber 4, and the angle formed between the tops of the two shark fin knives 5 is 30°. When the mud pushing cylinder 3 moves back and forth along its axis, it simultaneously cuts the mud blocks above the mud pushing chamber 4, destroys the arched structure formed by the mud blocks after the cylinder is withdrawn, accelerates the crushing and downward movement of the mud blocks by their own weight, and improves the mud pushing efficiency.
[0030] Among them, the mud pushing cylinder 3 is used to push a certain amount of gun mud, so that the gun mud is loaded into the mud gun mud barrel 13 through the chute 7 and the mud drop pipe 10.
[0031] The top of the mud drop pipe 10 is provided with a fixed funnel 8, and the mud inlet of the gun mud barrel 13 is also provided with a movable funnel 12, which can better collect the gun mud. The bottom of the mud drop pipe 10 is provided with a valve 11 to facilitate the control of the unloading time.
[0032] In some embodiments, as Figure 2 As shown, the wall surface of the mud pushing cylinder 3 near one end of the mud pushing chamber 4 is a mud pushing plate 35. The end of the mud pushing cylinder 3 away from the mud pushing chamber 4 is sleeved on the outside of a cylindrical slide rail 28. A cylinder 2 is coaxially disposed within the slide rail 28, and a connecting plate 31 is vertically mounted on the end of the piston rod 36 of the cylinder 2. An annular baffle 30 is disposed inside the mud pushing cylinder 3. The connecting plate 31 is configured to reciprocate between the baffle 30 and the inner wall of the mud pushing plate 35, thereby driving the mud pushing cylinder 3 to reciprocate horizontally along the slide rail 28.
[0033] In some embodiments, as Figure 2 As shown, the connecting plate 31 is threadedly connected to the piston rod 36 via a nut 32 , and a rib 33 is provided at the end of the piston rod 36 and located outside the nut 32 .
[0034] In some embodiments, as Figure 2 As shown, the oil cylinder 2 is connected to an oil inlet pipe 1 and an oil outlet pipe, and the oil source of the oil inlet pipe 1 is drawn from the hydraulic operating room of the furnace platform, replacing an independent hydraulic station.
[0035] In some embodiments, as Figure 1 As shown, the bottom of the mud pushing chamber 4 is placed on an electronic scale 19 through a bracket 18. It is used to accurately control the total amount of mud in the mud pushing chamber 4 each time.
[0036] In some embodiments, as Figure 1As shown, a dust cover 9 is provided at the bottom of the electronic scale 19, and heat insulation cotton 20 is provided between the dust cover 9 and the electronic scale 19. The heat insulation cotton 20 can insulate and keep the temperature of the device stable.
[0037] In some embodiments, as Figure 1 As shown, a limit rope 14 is installed on the mud pushing tube 3 and is led to the mud gun operating position through a pulley. The end of the limit rope 14 is installed with an upper limiter 15, a lower limiter 16 and a counterweight 17 in sequence from top to bottom, which is convenient for automatically controlling the stroke of the mud pushing tube 3.
[0038] In some embodiments, as Figure 1 As shown, the entire system is controlled by a remote control. An electronic screen 24 is installed on site to display and record the mud loading volume in real time. Instrumentation and control procedures are set up so that mud loading operations can be completed by one person using a single remote control button.
[0039] The utility model discloses an automatic mud loading device for a mud gun in front of an ironmaking blast furnace. The three-edged knife 23 breaks open the mud bag 22 and drops the mud into the mud storage bin 6. The mud then falls into the mud pushing chamber 4 under its own weight. The oil cylinder 2 is activated to push the foamed mud in the mud pushing chamber 4 into the chute 7 and into the fixed funnel 8. The funnel is connected to a mud drop pipe 10 that passes vertically through a dust removal cover 9. A valve 11 is installed at the lower end of the mud drop pipe 10, which is opened when loading mud and closed when not in use. The mud drop pipe 10 is directly opposite the mud gun loading port, and a movable funnel 12 is installed on the mud loading port. Mud can be quantitatively placed in the mud gun mud barrel 13 from the mud storage bin 6. After the mud pushing barrel 3 is activated to push the mud, mud continues to be loaded until the specified amount is reached.
[0040] like Figure 3 As shown in the figure, the working process of the automatic mud loading device for the mud gun in front of the ironmaking blast furnace of the utility model is as follows:
[0041] Mud gun mud tube 13 is placed below mud drop pipe 10, and movable funnel 12 is installed to the opening of mud gun mud tube 13, and valve 11 remains open. Ensure that the enough mud gun mud tube 13 of the gun mud amount of mud storage bin 6 uses at least once.
[0042] The mud is loaded by pushing the mud tube 3, and the electronic scale 19 measures and cooperates with it. When the pushed mud is enough to load 1 / 3 of the mud gun, the mud is stopped and the mud is driven out.
[0043] The mud gun is initialized and the mud pushing is started again; through the measurement of the electronic scale 19, when the mud pushed is enough to fill the mud gun to 2 / 3, the mud pushing is stopped and the mud rushing is started;
[0044] The mud gun is initialized and the mud pushing is started again; through the measurement of the electronic scale 19, when the mud pushed is enough to fill the mud gun to 3 / 3, the mud pushing is stopped and the mud driving is started;
[0045] The mud gun is initialized and the mud loading is completed; the valve 11 is closed, the movable funnel 12 is removed, and the power supply of the mud gun loading device is turned off.
[0046] If all the mud is piled at the muzzle at once, it can easily cause spillage. Therefore, this application uses a three-step loading process. In between, the muzzle's pushing piston squeezes the loaded mud to the front of the chamber, compacting it and freeing up space at the rear for further loading. This process is repeated three times. Manual operation allows for immediate mud replenishment. The mud pushing action can be manually determined to stop. For example, when the muzzle is determined to be 3 / 3 full, pushing can be stopped to allow subsequent loading to complete.
[0047] The utility model installs a three-edged knife bag breaking device at the mud storage bin feed, which can easily break the bottom of the mud bag and let the gun mud fall into the mud storage bin, replacing the manual bag opening operation, and the material unloading speed is very fast. A pair of shark fin knives are installed at the front end of the mud pushing barrel, and the mud blocks above are cut synchronously when the mud pushing barrel advances and retreats, destroying the arched structure formed by the mud blocks after the barrel retreats, accelerating the crushing of the mud blocks and downward movement by their own weight, and improving the mud pushing efficiency. The utility model takes up little space and is easy to arrange, realizing the true automation of mud loading, and greatly reducing the equipment cost, making it easier to promote. Enterprises with the conditions can assemble and install it by themselves.
Claims
1. An automatic mud loading device for a mud gun in front of an ironmaking blast furnace, characterized in that: The invention comprises a mud storage bin (6), wherein the top feed port of the mud storage bin (6) is used to receive the cannon mud in the mud bag (22) above; the top of the mud storage bin (6) is provided with a three-edged knife (23) for cutting open the mud bag (22); The bottom discharge port of the mud storage bin (6) is connected to a mud pushing chamber (4); both sides of the mud pushing chamber (4) are open in the horizontal direction; wherein, one side opening of the mud pushing chamber (4) is connected to the mud inlet of the mud gun mud barrel (13) through a downwardly inclined chute (7) and a vertically arranged mud drop pipe (10); a mud pushing cylinder (3) that moves back and forth along its axis is set in the other side opening of the mud pushing chamber (4); a pair of shark fin knives (5) are provided at one end of the mud pushing cylinder (3) close to the mud pushing chamber (4), and the angle formed between the top ends of the two shark fin knives (5) is 30°; The mud pushing cylinder (3) is used to push a fixed amount of gun mud so that the gun mud is loaded into the gun mud barrel (13) through the chute (7) and the mud drop pipe (10).
2. The automatic mud loading device for the mud gun in front of an ironmaking blast furnace according to claim 1, characterized in that: The wall surface of the mud pushing cylinder (3) close to one end of the mud pushing chamber (4) is a mud pushing plate (35), and the end of the mud pushing cylinder (3) away from the mud pushing chamber (4) is sleeved on the outside of a cylindrical slide rail (28), and an oil cylinder (2) is coaxially arranged in the slide rail (28), and a connecting plate (31) is vertically provided at the end of the piston rod (36) of the oil cylinder (2); An annular baffle (30) is provided inside the mud pushing cylinder (3), and the connecting plate (31) is used to reciprocate between the baffle (30) and the inner wall of the mud pushing plate (35) to drive the mud pushing cylinder (3) to reciprocate horizontally along the slide rail (28).
3. The automatic mud loading device for the mud gun in front of an ironmaking blast furnace according to claim 2, characterized in that: The connecting plate (31) is threadedly connected to the piston rod (36) through a nut (32), and a rib plate (33) is provided at the end of the piston rod (36) and located outside the nut (32).
4. The automatic mud loading device for the mud gun in front of an ironmaking blast furnace according to claim 3, characterized in that: The oil cylinder (2) is connected to an oil inlet pipe (1) and an oil outlet pipe, and the oil source of the oil inlet pipe (1) is drawn from the hydraulic operating room of the furnace platform.
5. The automatic mud loading device for a mud gun in front of an ironmaking blast furnace according to any one of claims 1 to 4, characterized in that: The bottom of the mud pushing chamber (4) is placed on an electronic scale (19).
6. The automatic mud loading device for the mud gun in front of an ironmaking blast furnace according to claim 5, characterized in that: A dust cover (9) is provided at the bottom of the electronic scale (19), and heat insulation cotton (20) is provided between the dust cover (9) and the electronic scale (19).