A drilling rig can be two-way discharge of soil diversion structure

Abstract

The application discloses a drilling machine bidirectional residue discharging and guiding structure, which comprises a guiding frame structure, a guiding structure, a guiding assembly and a driving mechanism, the guiding frame structure is provided with a through opening for the drill rod of the drilling machine to pass through; the guiding structure comprises a guiding plate and a residue discharging hopper; the guiding assembly is connected to the guiding frame structure, and the guiding assembly comprises first and second guiding weldments which are horizontally arranged in parallel and movably connected; and the driving mechanism is used for driving the first and second guiding weldments to move close to or away from the drill rod, so as to realize the closing or opening of the guiding assembly. The application can realize the switching of the installation positions of the residue discharging hopper and the guiding plate, change the discharging direction of the residue, realize bidirectional residue discharging, make the drilling machine capable of flexibly adjusting the residue discharging direction according to the field working conditions, adapt to different construction environments and residue discharging demands, and has the advantages of simple and compact structure, convenient dismounting and maintenance, reduced maintenance cost and downtime, and improved operation efficiency and flexibility of the drilling machine.

Description

Technical Field

[0001] This application relates to the field of mining machinery technology, specifically to a bidirectional slag discharge and soil guiding structure for drilling rigs. Background Technology

[0002] A drilling rig is a specialized drilling device used in underground engineering construction, primarily for drilling operations in shafts, vertical tunnels, or similar vertical spaces. It is widely used in mining, underground tunnel construction, subway engineering, and other underground infrastructure construction.

[0003] During the drilling process, a large amount of slag and mud will be generated. If these slags are not collected and removed in a timely and effective manner, they are very likely to fall and damage the main unit.

[0004] In existing technologies, drilling rigs typically discharge excavated soil from one side only, that is, concentrate the excavated soil towards the rear of the drilling rig. When the construction site space is limited or the discharge path is blocked, it is difficult to flexibly adjust the discharge direction when it is necessary to discharge the excavated soil towards the front of the drilling rig. It is difficult to achieve flexible switching between the front and rear of the drilling rig for discharge, which limits the efficiency of excavated soil discharge and the flexibility of operation. Utility Model Content

[0005] The main objective of this application is to provide a bidirectional slag discharge guiding structure for drilling rigs, which aims to solve the technical problem that drilling rigs in the prior art have difficulty in flexibly adjusting the discharge direction of slag and mud, thus limiting the slag discharge efficiency and operational flexibility.

[0006] To achieve the above objectives, this application provides the following technical solution: a bidirectional slag discharge guiding structure for drilling rigs, comprising: The flow guide frame structure is equipped with a passage for the drill rod of the drilling rig to pass through; The flow guiding structure includes a flow guide plate and a slag discharge hopper; A flow guiding component is connected to a flow guiding frame structure. The flow guiding component includes a first flow guiding weldment and a second flow guiding weldment that are horizontally arranged side by side and movably connected. The driving mechanism is used to drive the first and second flow guiding weldments to move closer to or further away from the drill pipe, thereby closing or opening the flow guiding assembly. When the flow guiding assembly is closed, the flow guiding plate is connected to the first flow guiding weldment, and the slag discharge hopper is connected to the second flow guiding weldment. The slag discharge hopper is located on the rear side of the drilling rig, realizing slag discharge from the rear side of the drilling rig. When the flow guiding assembly is opened, the flow guiding plate can be selectively connected to the second flow guiding weldment, and the slag discharge hopper is connected to the first flow guiding weldment. The slag discharge hopper is located on the front side of the drilling rig. The flow guiding assembly is closed by the drive mechanism to realize slag discharge on the front side of the drilling rig.

[0007] Compared with existing technologies, the first and second guide welded parts are driven by a drive mechanism to switch the installation positions of the slag discharge hopper and the guide plate, thereby changing the discharge direction of the slag and achieving bidirectional slag discharge. This allows the drilling rig to flexibly adjust the slag discharge direction according to the on-site working conditions, adapt to different construction environments and slag discharge requirements, and has a simple and compact structure that is easy to disassemble and maintain, reducing maintenance costs and downtime, and improving the operating efficiency and flexibility of the drilling rig.

[0008] Preferably, it also includes at least two slag flushing mechanisms that can be switched between rear slag discharge and front slag discharge. The two slag flushing mechanisms are respectively connected to the outer wall of the flow guide frame structure and are located above the first flow guide weldment and the second flow guide weldment, respectively, to assist the slag discharge hopper in discharging slag.

[0009] In this embodiment, the slag flushing mechanism is used to assist the slag discharge hopper in discharging slag. The slag flushing mechanism switches according to the discharge direction of the slag to achieve front or rear flushing, thus assisting in the discharge of slag.

[0010] Preferably, the slag discharge hopper and the slag flushing mechanism used for switching are located on different sides.

[0011] In this embodiment, different sides can avoid mutual interference between them in space, ensuring that they can operate simultaneously or independently and efficiently, thereby improving the slag discharge and cleaning effect.

[0012] Preferably, the guide plate is detachably connected to the top of the first or second guide weldment, and the slag discharge hopper is detachably connected to the end of the first or second guide weldment away from the drill rod.

[0013] In this embodiment, the detachable connection facilitates the installation and disassembly of the operator, ensuring convenience during the process of changing the installation position of the guide plate and the slag discharge hopper. When the guide plate or the slag discharge hopper is damaged, it is also easy to replace it in a timely manner, reducing downtime caused by component damage.

[0014] Preferably, the driving mechanism includes a first driving cylinder and a second driving cylinder; one end of the first driving cylinder is connected to the flow guide frame structure, and the other end is connected to the first flow guide weldment; One end of the second drive cylinder is connected to the flow guide frame structure, and the other end is connected to the second flow guide weldment; The first driving cylinder and the second driving cylinder can work together to drive the first flow guide weldment and the second flow guide weldment to move relative to each other.

[0015] In this embodiment, the first and second drive cylinders are powered by a hydraulic system, which can adjust the moving distance and speed of the first and second flow guide weldments according to actual needs, thereby precisely controlling the opening and closing degree of the flow guide assembly.

[0016] Preferably, the first flow guiding weldment and the second flow guiding weldment are respectively provided with a first opening and a second opening on the side that are close to each other. The first opening and the second opening are joined together to form a circle for the drill rod to pass through.

[0017] In this embodiment, the first opening and the second opening are combined to form a circle for the drill rod to pass through, and are in close contact with the outer periphery of the drill rod, which can provide a stable and precise channel for the drill rod and ensure the normal operation of the drill rod.

[0018] Preferably, the guide plate has a third opening on the side facing the drill rod, and the shape of the third opening is the same as the shape of the first opening.

[0019] In this embodiment, the third opening can ensure a stable connection between the guide plate and the first or second guide weldment, and can also effectively prevent slag from leaking from the connection gap, thereby improving the sealing performance and efficiency of slag discharge.

[0020] Preferably, the guide plate has an inclined structure and is inclined toward the slag discharge hopper; The first and second flow guiding weldments are provided with a downwardly inclined slope structure starting from the end away from the drill pipe.

[0021] In this embodiment, the inclined structure allows the slag to flow more smoothly to the slag discharge hopper under the action of gravity, reducing the accumulation of slag on the guide plate and further improving the smoothness and efficiency of slag discharge.

[0022] Preferably, a connecting plate is fixedly provided at the end of the first and second flow guiding weld members away from the drill rod, and the slag discharge hopper is detachably connected to the connecting plate by bolts.

[0023] In this embodiment, the detachable connection allows for convenient and quick disassembly and installation of the slag discharge hopper, facilitating on-site maintenance, cleaning, or replacement, reducing drilling rig downtime. It also strengthens the connection between the slag discharge hopper and the first and second flow guiding weldments, preventing the slag discharge hopper from loosening or falling off due to vibration or impact, thus improving the overall stability of the drilling rig.

[0024] Preferably, the flow guiding frame structure includes a slag receiving hopper and an annular frame, the outer wall of the slag receiving hopper is connected to the annular frame, the slag receiving hopper is located above the flow guiding assembly, and the diameter of the slag receiving hopper gradually decreases from top to bottom.

[0025] In this embodiment, the slag receiving hopper is directional, which helps slag, slag or mud to fall smoothly into the guide component and be discharged through the slag discharge hopper, avoiding the accumulation or blockage of slag in the slag receiving hopper. Attached Figure Description

[0026] Figure 1A front view schematic diagram of the slag discharge structure behind the slag discharge hopper in a bidirectional slag discharge soil guide structure for a drilling rig provided in an embodiment of this application; Figure 2 A three-dimensional structural diagram of the slag discharge behind the slag discharge hopper in a bidirectional slag discharge soil guiding structure for a drilling rig provided in an embodiment of this application; Figure 3 A partial structural schematic diagram of the guide component in the bidirectional slag discharge guide structure of the drilling rig provided in an embodiment of this application when the guide component is closed; Figure 4 A partial structural schematic diagram of the guide component in the bidirectional slag discharge guide structure of the drilling rig provided in an embodiment of this application when the guide component is opened; Figure 5 An exploded view of a portion of the structure of a bidirectional slag discharge diversion structure for a drilling rig provided in an embodiment of this application; Figure 6 A schematic diagram of the flow guiding component and flow guiding structure in a bidirectional slag discharge guiding structure for a drilling rig provided in an embodiment of this application; Figure 7 An exploded structural diagram of the flow guiding component and flow guiding structure in a bidirectional slag discharge guiding structure for a drilling rig provided in an embodiment of this application; Figure 8 This is a schematic cross-sectional view of the flow guiding component in a bidirectional slag discharge structure for a drilling rig provided in an embodiment of this application when the component is closed.

[0027] In the diagram: 1. Drilling rig; 2. Guide frame structure; 3. Guide structure; 4. Guide assembly; 5. Drive mechanism; 6. Slag flushing mechanism; 11. Drill pipe; 21. Through port; 22. Slag receiving hopper; 23. Annular frame; 31. Guide plate; 32. Slag discharge hopper; 33. Connecting part; 41. First guide weldment; 42. Second guide weldment; 43. Connecting plate; 44. Baffle; 51. First drive cylinder; 52. Second drive cylinder; 311, the third opening; 411, the first opening; 421, the second opening. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0029] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0030] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0031] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 8 illustrate.

[0032] This embodiment provides a bidirectional slag discharge guiding structure for drilling rigs, which is applied in the field of mining machinery technology. Specifically, as shown in... Figures 1 to 8 As shown, the system includes a flow guide frame structure 2, a flow guide structure 3, a flow guide component 4, and a drive mechanism 5. The flow guide frame structure 2 has a through-hole 21 for the drill rod 11 of the drilling rig 1 to pass through, and the through-hole also facilitates the guidance and collection of slag. The flow guide structure 3 includes a flow guide plate 31 and a slag discharge hopper 32, which is used for discharging slag, mineral slag, and mud. The flow guide component 4 is connected to the flow guide frame structure 2, and at least partially connected to the inner wall of the flow guide frame structure 2. The flow guide component 4 includes a first flow guide weldment 41 and a second flow guide weldment 42 arranged horizontally side by side and movably connected. The drive mechanism 5 is used to drive the first flow guide weldment 41 and the second flow guide weldment 42 to move closer to or away from the drill rod 11, thereby closing or opening the flow guide component 4.

[0033] Specifically, the flow guiding component 4 has a closed state and an open state. When the flow guiding component 4 is closed, the flow guiding plate 31 is connected to the first flow guiding weldment 41, and the slag discharge hopper 32 is connected to the second flow guiding weldment 42. The slag discharge hopper 32 is located on the rear side of the drilling rig 1, realizing the discharge of slag from the rear side of the drilling rig 1. When the flow guiding component 4 is open, the flow guiding plate 31 can be selectively connected to the second flow guiding weldment 42, and the slag discharge hopper 32 is connected to the first flow guiding weldment 41. The slag discharge hopper 32 is located on the front side of the drilling rig 1. The flow guiding component 4 is closed by the drive mechanism 5, realizing the discharge of slag from the front side of the drilling rig 1. At this time, the drilling rig 1 can be switched to the drill rod 11 state for subsequent operations. The first guide weldment 41 and the second guide weldment 42 are driven by the drive mechanism 5 to open and close, thereby switching the installation positions of the slag discharge hopper 32 and the guide plate 31, thus changing the discharge direction of the slag and achieving bidirectional slag discharge. This allows the drilling rig 1 to flexibly adjust the slag discharge direction according to the on-site working conditions, adapt to different construction environments and slag discharge requirements, and has a simple and compact structure. It is also easy to disassemble and maintain, reducing maintenance costs and downtime, and improving the operating efficiency and flexibility of the drilling rig 1.

[0034] Among them, such as Figures 4 to 7As shown, the guide plate 31 is detachably connected to the top of the first guide weldment 41 or the second guide weldment 42, and the slag discharge hopper 32 is detachably connected to the end of the first guide weldment 41 or the second guide weldment 42 away from the drill rod 11. The detachable connection facilitates the installation and removal by the operator, ensuring the convenience of changing the installation position of the guide plate 31 and the slag discharge hopper 32. At the same time, when the guide plate 31 or the slag discharge hopper 32 is damaged, it is also easy to replace it in time, reducing downtime caused by component damage and improving the overall utilization rate of the equipment.

[0035] Furthermore, such as Figures 1 to 8 As shown, it also includes at least two slag flushing mechanisms 6 that can be switched between rear-side and front-side slag discharge. The drive mechanism 5 and the slag flushing mechanism 6 are located on different sides. The two slag flushing mechanisms 6 are respectively connected to the outer wall of the guide frame structure 2 and are located above the first guide weldment 41 and the second guide weldment 42. They are used to assist the slag discharge hopper 32 in discharging slag. The slag flushing mechanism 6 switches according to the direction of slag discharge to achieve front-side or rear-side flushing, which helps to discharge slag. When the front side is discharging slag, the slag flushing mechanism 6 installed on the front side stops working, and the slag flushing mechanism 6 installed on the rear side starts to run. The water flow washes away the slag adhering to the guide plate 31 and the inner wall of the slag discharge hopper 32, ensuring that the slag discharge process is smooth and unobstructed and improving the slag discharge efficiency.

[0036] The slag discharge hopper 32 and the slag flushing mechanism 6 used for switching are located on different sides. Being on different sides can avoid mutual interference between the two in space, ensuring that they can operate simultaneously or independently and efficiently, thereby improving the slag discharge and cleaning effect.

[0037] Furthermore, such as Figures 3 to 5 As shown, the drive mechanism 5 includes a first drive cylinder 51 and a second drive cylinder 52. The first drive cylinder 51 and the second drive cylinder 52 are located on the same side. The first drive cylinder 51 is located above the second drive cylinder 52, or the second drive cylinder 52 is located above the first drive cylinder 51. One end of the first drive cylinder 51 is connected to the flow guide frame structure 2, and the other end of the first drive cylinder 51 is connected to the first flow guide weldment 41. One end of the second drive cylinder 52 is connected to the flow guide frame structure 2, and the other end of the second drive cylinder 52 is connected to the second flow guide weldment 42. The first drive cylinder 51 and the second drive cylinder 52 can work together to drive the first flow guide weldment 41 and the second flow guide weldment 42 to move relative to each other. The first drive cylinder 51 and the second drive cylinder 52 are powered by a hydraulic system, and the moving distance and speed of the first flow guide weldment 41 and the second flow guide weldment 42 can be adjusted according to actual needs, thereby precisely controlling the opening and closing degree of the flow guide assembly 4.

[0038] Among them, such as Figures 6 to 7As shown, the first flow guiding weldment 41 and the second flow guiding weldment 42 are respectively provided with a first opening 411 and a second opening 421 on the side close to each other. The first opening 411 and the second opening 421 are located in the middle of the first flow guiding weldment 41 and the second flow guiding weldment 42. The first opening 411 and the second opening 421 are joined together to form a circle for the drill rod 11 to pass through. They are in close contact with the outer periphery of the drill rod 11, which can provide a stable and precise channel for the drill rod 11, ensure the normal operation of the drill rod 11, and prevent mud and water from leaking down the drill rod.

[0039] Among them, such as Figures 6 to 7 As shown, a connecting plate 43 is fixedly provided at the end of the first flow guiding weldment 41 and the second flow guiding weldment 42 away from the drill rod 11. The slag discharge hopper 32 is detachably connected to the connecting plate 43 by bolts. The detachable connection allows the slag discharge hopper 32 to be easily and quickly disassembled and installed, facilitating on-site maintenance, cleaning, or replacement, reducing the downtime of the drilling rig 1. At the same time, it can also strengthen the connection strength between the slag discharge hopper 32 and the first flow guiding weldment 41 and the second flow guiding weldment 42, preventing the slag discharge hopper 32 from loosening or falling off due to vibration or impact, and improving the overall stability of the drilling rig 1. Among them, baffles 44 are provided on both sides of the first flow guiding weldment 41 and the second flow guiding weldment 42. The baffles 44 extend along the direction of the slag receiving hopper 22 and are set on the side of the first flow guiding weldment 41 and the second flow guiding weldment 42 away from the slag receiving hopper 22. The baffles 44 can block the slag and prevent the slag and soil from entering the connection between the flow guiding component 4 and the flow guiding frame structure 2, causing damage to the drilling rig 1.

[0040] Furthermore, such as Figures 6 to 7 As shown, the guide plate 31 has a third opening 311 on the side facing the drill rod 11. The shape of the third opening 311 is the same as that of the first opening 411. The inner wall of the third opening 311 is in close contact with the outer wall of the first opening 411 or the second opening 421, which can ensure the stable connection between the guide plate 31 and the first guide weldment 41 or the second guide weldment 42, and can also effectively prevent the slag from leaking from the connection gap, thereby improving the sealing performance and efficiency of slag discharge.

[0041] Furthermore, such as Figures 6 to 7As shown, the guide plate 31 has an inclined structure and is tilted towards the slag discharge hopper 32, allowing the slag to flow more smoothly to the slag discharge hopper 32 under gravity, reducing the accumulation of slag on the guide plate 31, and further improving the smoothness and efficiency of slag discharge. A connecting part 33 is fixedly provided at the bottom of the guide plate 31. The connecting part 33 is detachably connected to the first guide weldment 41 or the second guide weldment 42 by bolts. The connecting part 33 also supports the guide plate 31, preventing it from bending under gravity and strengthening the connection between the guide plate 31 and the first or second guide weldment 41. The first and second guide weldments 41 and 42 have downward-sloping structures starting from the end furthest from the drill rod 11. These sloped structures help to discharge slag smoothly and prevent accumulation within the guide assembly 4.

[0042] Furthermore, such as Figures 3 to 5 As shown, the flow guide frame structure 2 includes a slag receiving hopper 22 and an annular frame 23. The outer wall of the slag receiving hopper 22 is connected to the annular frame 23. The slag receiving hopper 22 is located above the flow guide assembly 4. The diameter of the slag receiving hopper 22 gradually decreases from the top to the bottom. The slag receiving hopper 22 has a guiding function, which helps slag, slag or mud water to fall smoothly into the flow guide assembly 4 and be discharged through the slag discharge hopper 32, avoiding the accumulation or blockage of slag in the slag receiving hopper 22.

[0043] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A bidirectional slag discharge and soil diversion structure for drilling rigs, characterized in that, include: The flow guide frame structure (2) is provided with a passage (21) through which the drill rod (11) of the drilling rig (1) passes. The flow guiding structure (3) includes a flow guide plate (31) and a slag discharge hopper (32); A flow guiding component (4) is connected to a flow guiding frame structure (2). The flow guiding component (4) includes a first flow guiding weldment (41) and a second flow guiding weldment (42) that are arranged horizontally side by side and movably connected. The drive mechanism (5) is used to drive the first flow guide weldment (41) and the second flow guide weldment (42) to move closer to or further away from the drill rod (11) to realize the closing or opening of the flow guide assembly (4); When the flow guiding component (4) is closed, the flow guiding plate (31) is connected to the first flow guiding weldment (41), and the slag discharge hopper (32) is connected to the second flow guiding weldment (42). The slag discharge hopper (32) is located on the rear side of the drilling rig (1) to realize slag discharge on the rear side of the drilling rig (1). When the flow guiding assembly (4) is opened, the flow guiding plate (31) can be selectively connected to the second flow guiding weldment (42), and the slag discharge hopper (32) is connected to the first flow guiding weldment (41). The slag discharge hopper (32) is located on the front side of the drilling rig (1). The flow guiding assembly (4) is closed by the drive mechanism (5) to realize the slag discharge on the front side of the drilling rig (1).

2. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, It also includes at least two slag flushing mechanisms (6) that can be switched between rear slag discharge and front slag discharge. The two slag flushing mechanisms (6) are respectively connected to the outer wall of the flow guide frame structure (2) and are respectively located above the first flow guide weldment (41) and the second flow guide weldment (42) to assist the slag discharge hopper (32) in discharging slag.

3. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 2, characterized in that, The slag discharge hopper (32) and the slag flushing mechanism (6) used for switching are located on different sides.

4. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The guide plate (31) is detachably connected to the top of the first guide weldment (41) or the second guide weldment (42), and the slag discharge hopper (32) is detachably connected to the end of the first guide weldment (41) or the second guide weldment (42) away from the drill rod (11).

5. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The drive mechanism (5) includes a first drive cylinder (51) and a second drive cylinder (52); one end of the first drive cylinder (51) is connected to the flow guide frame structure (2), and the other end is connected to the first flow guide weldment (41); One end of the second drive cylinder (52) is connected to the flow guide frame structure (2), and the other end is connected to the second flow guide weldment (42); The first driving cylinder (51) and the second driving cylinder (52) can work together to drive the first flow guide weldment (41) and the second flow guide weldment (42) to move relative to each other.

6. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The first flow guide weldment (41) and the second flow guide weldment (42) are respectively provided with a first opening (411) and a second opening (421) on the side close to each other. The first opening (411) and the second opening (421) are joined together to form a circle for the drill rod (11) to pass through.

7. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 6, characterized in that, The guide plate (31) has a third opening (311) on the side facing the drill rod (11), and the shape of the third opening (311) is the same as that of the first opening (411).

8. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The guide plate (31) has an inclined structure and is inclined toward the slag discharge hopper (32); The first flow guide weldment (41) and the second flow guide weldment (42) are provided with a downwardly inclined slope structure starting from the end away from the drill rod (11).

9. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The first flow guide welding piece (41) and the second flow guide welding piece (42) are both fixedly provided with a connecting plate (43) at the end away from the drill rod (11), and the slag discharge hopper (32) is detachably connected to the connecting plate (43) by bolts.

10. The bidirectional slag discharge and soil diversion structure for drilling rigs according to claim 1, characterized in that, The flow guiding frame structure (2) includes a slag receiving hopper (22) and an annular frame (23). The outer wall of the slag receiving hopper (22) is connected to the annular frame (23). The slag receiving hopper (22) is located above the flow guiding assembly (4). The diameter of the slag receiving hopper (22) gradually decreases from the top to the bottom.

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