Dismounting machine for tapping hole of pneumatic electric furnace

Abstract

The invention belongs to the technical field of dismantling machines, and particularly relates to a pneumatic electric furnace tapping hole dismantling machine which comprises a dismantling device shell, an exhaust port is formed in the tail end of the dismantling device shell, an air hammer is fixedly installed in the dismantling device shell, and a cover plate is installed at the tail end of the dismantling device shell through bolts. And two lifting bolts are mounted on the cover plate in a threaded manner. According to the pneumatic electric furnace tapping hole dismantling machine, the air hammer is driven by compressed air, high-frequency impact force can be rapidly generated, the hammer block and the hammer head are unique in design, the diameter of multiple layers of the hammer block is gradually decreased, the hammer block is provided with hammer teeth, the hammer head is in a cylindrical cone shape, refractory bricks can be efficiently broken, and compared with a traditional manual dismantling mode, dismantling operation can be completed within a few minutes, time is greatly saved, and work efficiency is improved. And the downtime of the electric furnace is obviously shortened, so that the production efficiency of a steel mill is improved, the economic loss caused by downtime is reduced, the production continuity is ensured, the steel mill can operate more efficiently, and more economic benefits are created.

Description

Technical Field

[0001] The present invention relates to the technical field of dismantling machines, in particular to a pneumatic electric furnace tapping port dismantling machine. Background Art

[0002] In the steelmaking industry, electric furnace steelmaking is an important production method. The taphole, a key component of the electric furnace, has a direct impact on production continuity and efficiency. During the electric furnace steelmaking process, the refractory bricks at the taphole are subjected to long-term erosion and corrosion from high-temperature molten steel, as well as mechanical stress from frequent opening and closing. This makes them susceptible to melting damage. Once severe melting damage occurs, the refractory bricks must be replaced promptly, otherwise the quality of the steel tapping may be affected, and even production accidents may occur. This is the industry background of this invention.

[0003] Traditionally, the removal of refractory bricks from the taphole of an electric furnace relies primarily on manual labor. Workers must use simple tools to hammer, pry, and dig out the damaged refractory bricks in a harsh, high-temperature, and dusty environment. This method is not only inefficient, but also time-consuming, resulting in extended furnace downtime and severely impacting the steel mill's production schedule. Furthermore, manual removal carries significant safety risks. High temperatures can easily lead to burns, dust can damage workers' respiratory systems, and bricks can cause injuries during the operation.

[0004] With the development of the steel industry, the demand for production efficiency and safety is becoming increasingly stringent, and traditional manual removal methods are no longer able to meet these demands. Therefore, the development of efficient and safe electric furnace taphole removal equipment is urgently needed. This has prompted researchers and companies to continuously explore new technologies and solutions to solve this long-standing problem plaguing steel production. The pneumatic electric furnace taphole removal machine of this invention was developed precisely in this context. Summary of the Invention

[0005] Technical problems solved In view of the deficiencies in the prior art, the present invention provides a pneumatic electric furnace taphole removal machine, which solves the problems raised in the above background technology.

[0006] (2) Technical solution In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A pneumatic electric furnace tapping port dismantling machine comprises a dismantling device housing, an exhaust port is provided on the tail end of the dismantling device housing, an air hammer is fixedly installed inside the dismantling device housing, the tail end of the dismantling device housing is mounted with a cover plate by bolts, two eye screws are threadedly mounted on the cover plate, one end of the air hammer is connected with a connecting pipe, the connecting pipe passes through the cover plate and extends to the outside, a connecting head is fixedly connected to the movable end of the air hammer, a hammer rod is plugged into the connecting head, the hammer rod is movable at the front end of the dismantling device housing, a notch is provided on the hammer rod, a positioning pin is movably plugged into the notch, two through holes are provided on the dismantling device housing, the through holes are used to facilitate the installation of positioning pins, one end of the hammer rod is fixedly connected to a hammer block, and a hammer head is fixedly connected to the center of the hammer block.

[0007] Furthermore, the exhaust ports are circumferentially distributed around the remover housing, and the surfaces of the exhaust ports are covered with metal dust-proof nets.

[0008] Furthermore, one end of the connecting pipe is connected to the ventilation pipe through a quick connector.

[0009] Furthermore, the positioning pin passes through the connector and is engaged in the notch in the hammer rod.

[0010] Furthermore, a positioning hole is provided at one end of the positioning pin, and a spring pin is inserted into the positioning hole.

[0011] Furthermore, the hammer block is circular.

[0012] Furthermore, the diameters of the multiple layers of the hammer block decrease in sequence, and hammer teeth are circumferentially installed on the end surface of the hammer block.

[0013] Furthermore, the hammer head is in the shape of a cylindrical cone.

[0014] (3) Beneficial effects Compared with the prior art, the present invention provides a pneumatic electric furnace taphole removal machine, which has the following beneficial effects: The pneumatic electric furnace taphole demolition machine uses compressed air to drive the air hammer, which can quickly generate high-frequency impact force. Its hammer block and hammer head are uniquely designed. The hammer block has multiple layers with decreasing diameters and hammer teeth. The hammer head is in the shape of a cylindrical cone, which can efficiently crush refractory bricks. Compared with traditional manual demolition methods, the demolition work can be completed in just a few minutes, which greatly saves time and significantly shortens the downtime of the electric furnace. This not only improves the production efficiency of the steel plant, but also reduces the economic losses caused by downtime, ensures the continuity of production, and allows the steel plant to operate more efficiently and create more economic benefits.

[0015] This equipment uses mechanized demolition and can be remotely controlled by the operator. There is no need to work at close range in a dangerous environment with high temperature and high dust, which effectively avoids safety risks such as burns, injuries and dust hazards, and greatly protects the life safety and physical health of workers. At the same time, when the equipment is running, the metal dust screen at the exhaust port can prevent dust from overflowing and reduce pollution to the working environment. In addition, the equipment structure is stable and the impact process is controllable, which avoids bricks flying and injuring people, creating a safer and more comfortable working environment for operators and is conducive to the construction of a safe production culture in the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a side structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the remover housing of the present invention; Figure 4 It is a schematic diagram of the connection structure of the hammer rod, hammer block and hammer head of the present invention.

[0017] In the figure: 1. Remover housing; 2. Exhaust port; 3. Metal dust screen; 4. Air hammer; 5. Cover plate; 6. Eye screw; 7. Connecting pipe; 8. Quick connector; 9. Vent pipe; 10. Connector; 11. Hammer rod; 12. Notch; 13. Locating pin; 14. Spring pin; 15. Through hole; 16. Hammer block; 17. Hammer head. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example like Figure 1-4 As shown, a pneumatic electric furnace taphole remover proposed in one embodiment of the present invention includes a remover housing 1, which serves as the main frame of the equipment, plays the role of accommodating and protecting internal components, provides a mounting base for components such as a pneumatic hammer 4, and ensures the stability of the overall structure of the equipment; The tail end of the remover housing 1 is provided with an exhaust port 2; the exhaust port 2 is distributed around the remover housing 1 and is used to discharge the exhaust gas generated by the air hammer 4 when it is working, so that the air hammer 4 can continue to work stably; The demolition tool housing 1 houses an air hammer 4, the core power component of the device, which uses compressed air as its power source to generate impact force. Compressed air input through the connecting pipe 7 drives the movable end of the air hammer 4, which in turn drives the connector 10, hammer rod 11 and other components to move, providing power for the demolition operation. The rear end of the remover housing 1 is provided with a cover plate 5 which is bolted to the rear end of the remover housing 1 and is used to seal the remover housing 1 and protect the internal components while providing a mounting position for the eye screw 6 and the connecting pipe 7. The cover plate 5 is threadedly mounted with two eye screws 6, which are threadedly mounted on the cover plate 5, making it convenient to use external lifting equipment to lift the demolition machine and achieve accurate positioning and installation of the equipment at the tapping port of the electric furnace; One end of the air hammer 4 is connected to a connecting pipe 7, which extends through the cover plate 5 to the outside. One end of the connecting pipe 7 is connected to the air hammer 4, and the other end of the connecting pipe 7 extends to the outside through the cover plate 5 and is connected to the ventilation pipe 9 through a quick connector 8. The connecting pipe is responsible for introducing external compressed air into the air hammer 4 to ensure that the air hammer 4 obtains a stable power supply; The movable end of the air hammer 4 is fixedly connected to a connector 10, which is fixedly connected to the movable end of the air hammer 4, and a hammer rod 11 is inserted thereon to transmit the power of the air hammer 4 so that the hammer rod 11 can reciprocate with the movable end of the air hammer 4; A hammer rod 11 is plugged into the connector 10. The hammer rod 11 is movable at the front end of the remover housing 1. One end of the hammer rod 11 is connected to the connector 10, and the other end is fixedly connected to the hammer block 16. Driven by the air hammer 4, the hammer rod 11 transmits the impact force of the air hammer 4 to the hammer block 16 and hammer head 17, thereby removing the refractory bricks at the tapping hole of the electric furnace. The hammer rod 11 is provided with a notch 12, which is arranged on the hammer rod 11 and used in conjunction with the positioning pin 13 to prevent the hammer rod 11 from being separated from the connector 10 during movement, thereby ensuring the stability of power transmission; A positioning pin 13 is inserted and movably connected in the notch 12, passes through the connector 10 and is engaged with the notch 12 of the hammer rod 11, thereby positioning and fixing the hammer rod 11, ensuring that the hammer rod 11 is reliably connected to the connector 10, so that the power of the air hammer 4 can be effectively transmitted to the hammer rod 11; The remover housing 1 is provided with two through holes 15, which are used to facilitate the installation of the positioning pin 13. The through holes 15 are provided on the remover housing 1 to facilitate the installation of the positioning pin 13, so that the positioning pin 13 can smoothly pass through the notch 12 of the connector 10 and the hammer rod 11, providing convenience for the installation and fixation of the positioning pin 13; One end of the hammer rod 11 is fixedly connected to a hammer block 16, which is one of the components that directly acts on the refractory bricks at the tapping port of the electric furnace. The circular design with multiple layers of decreasing diameter and hammer teeth distributed around the end face increases the contact area and friction with the refractory bricks, improving demolition efficiency and enhancing the crushing effect. The hammer block 16 is fixedly connected to the center of the hammer block 16 with a hammer head 17, which is fixed at the center of the hammer block 16 and has a cylindrical cone shape. Its sharp shape makes the impact force more concentrated, which can more effectively break the melt-damaged refractory bricks at the steel tapping port of the electric furnace and improve the effect of the demolition operation.

[0020] The pneumatic electric furnace taphole removal machine operates as follows: compressed air is supplied to the air hammer 4 via a vent pipe 9 connected to a quick connector 8 at one end of a connecting pipe 7. The compressed air activates the air hammer 4, and its movable end drives the connector 10 in reciprocating motion. Driven by this, a hammer rod 11, plugged into the connector 10, performs reciprocating linear motion at the front end of the remover housing 1. A hammer block 16, fixedly attached to one end of the hammer rod 11, and a hammer head 17 at the center of the hammer block 16, move with the hammer rod 11, utilizing the impact force of the hammer head 17 and hammer block 16 to remove the melt-damaged refractory bricks from the electric furnace taphole. During this process, the positioning pin 13 passes through the connector 10 and engages in the notch 12 of the hammer rod 11 to prevent the hammer rod 11 from detaching from the connector 10. The spring pin 14 is inserted into the positioning hole at one end of the positioning pin 13 to further fix the positioning pin 13; the exhaust port 2 is distributed circumferentially around the remover housing 1, and the surface is covered with a metal dustproof net 3, which is used to discharge the exhaust gas generated when the air hammer 4 is working and prevent dust from entering the interior of the equipment.

[0021] like Figure 1 As shown, in some embodiments, the exhaust port 2 is distributed circumferentially around the remover housing 1, and a metal dustproof net 3 is covered on the surface of the exhaust port 2; covering the surface of the exhaust port 2 can prevent external dust and other impurities from entering the remover housing 1 through the exhaust port 2, avoiding wear on internal precision components and extending the service life of the equipment.

[0022] like Figure 2 As shown, in some embodiments, one end of the connecting pipe 7 is connected to the ventilation pipe 9 through a quick connector 8. The connecting pipe 7 and the ventilation pipe 9 are connected, which facilitates the quick connection and disassembly of the pipeline, facilitates the installation, commissioning and maintenance of the equipment, and improves work efficiency. The quick connector 8 in this part is a direct application of the existing technology. The ventilation pipe 9 is used to transport compressed air, connect the external compressed air source with the demolition machine, and provide a power medium for the air hammer 4.

[0023] like Figure 3As shown, in some embodiments, the positioning pin 13 passes through the connector 10 and engages with the notch 12 in the hammer rod 11. The positioning pin 13 plays a key role in connection and positioning in the pneumatic electric furnace taphole removal machine. It passes through the connector 10 and precisely engages with the notch 12 in the hammer rod 11, firmly connecting the connector 10 and the hammer rod 11, ensuring that the power generated by the air hammer 4 can be stably and efficiently transmitted from the connector 10 to the hammer rod 11.

[0024] like Figure 2 As shown, in some embodiments, a positioning hole is provided at one end of the positioning pin 13, and a spring pin 14 is inserted into the positioning hole, which is inserted into the positioning hole at one end of the positioning pin 13 to further fix the positioning pin 13, prevent the positioning pin 13 from loosening or falling off during the operation of the equipment, and enhance the reliability of the connection.

[0025] like Figure 3 As shown, in some embodiments, the hammer block 16 is circular; the hammer block 16 is designed to be circular, which has many advantages during the operation of the pneumatic electric furnace tapping mouth dismantling machine. From a mechanical point of view, when the circular structure is subjected to the impact force transmitted by the hammer rod 11, the force can be evenly distributed to various parts, avoiding stress concentration, reducing the risk of damage to the hammer block 16 itself, and extending its service life. When dismantling the refractory bricks of the electric furnace tapping mouth, the circular hammer block 16 has more uniform contact with the refractory bricks. Compared with other shapes, the circular hammer block 16 can form a more balanced pressure distribution on the surface of the refractory bricks during rotation or swinging, making the crushing effect more uniform and improving the dismantling efficiency. Moreover, the circular shape can reduce air resistance, reduce energy loss, and improve the overall operating stability of the equipment when the equipment is running.

[0026] like Figure 4 As shown, in some embodiments, the hammer block 16 has multiple layers of decreasing diameter, and hammer teeth are circumferentially mounted on the end surface of the hammer block 16. This design of hammer block 16 with multiple layers of decreasing diameter and circumferentially mounted hammer teeth greatly enhances the demolition capability of the pneumatic electric furnace taphole demolition machine. This structure of decreasing diameters allows the hammer block 16 to produce a "conical penetration" effect when impacting refractory bricks. As the diameter decreases, the impact force becomes increasingly concentrated, increasing the destructive effect on the refractory bricks, helping to break the refractory bricks more deeply and improving demolition efficiency.

[0027] The circumferential distribution of the hammer teeth further enhances the demolition process. These teeth increase the friction and contact area between the hammer block 16 and the refractory bricks, allowing the hammer teeth to more effectively bite into the bricks with each impact, resulting in greater crushing force and faster breaking of the bricks into smaller pieces for easier cleaning. This also reduces damage to surrounding intact parts, improving demolition accuracy.

[0028] like Figure 4As shown, in some embodiments, the hammer head 17 is in a cylindrical cone shape and has a drilling feature.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic electric furnace taphole removal machine, comprising a removal device housing (1), characterized in that: The tail end of the remover housing (1) is provided with an exhaust port (2), an air hammer (4) is fixedly installed inside the remover housing (1), the tail end of the remover housing (1) is fixed with a cover plate (5) by a bolt, two eye screws (6) are threadedly installed on the cover plate (5), one end of the air hammer (4) is connected with a connecting pipe (7), the connecting pipe (7) passes through the cover plate (5) and extends to the outside, the movable end of the air hammer (4) is fixedly connected with a connector (10), the connector (10) is plugged with a hammer rod (11), which is movable at the front end of the remover housing (1), and a notch (12) is provided on the hammer rod (11), in which a positioning pin (13) is movably plugged, and two through holes (15) are provided on the remover housing (1), and the through holes (15) are used to facilitate the installation of the positioning pin (13), one end of the hammer rod (11) is fixedly connected to a hammer block (16), and a hammer head (17) is fixedly connected to the center of the hammer block (16).

2. The pneumatic electric furnace taphole removal machine according to claim 1, characterized in that: The exhaust ports (2) are circumferentially distributed around the remover housing (1), and a metal dustproof net (3) covers the surface of the exhaust ports (2).

3. The pneumatic electric furnace taphole removal machine according to claim 1, characterized in that: One end of the connecting pipe (7) is connected to the vent pipe (9) via a quick connector (8).

4. The pneumatic electric furnace taphole removal machine according to claim 1, characterized in that: The positioning pin (13) passes through the connector (10) and is engaged with the notch (12) in the hammer rod (11).

5. The pneumatic electric furnace taphole removal machine according to claim 4, characterized in that: One end of the positioning pin (13) is provided with a positioning hole, and a spring pin (14) is inserted into the positioning hole.

6. The pneumatic electric furnace taphole removal machine according to claim 1, characterized in that: The hammer block (16) is circular.

7. The pneumatic electric furnace taphole removal machine according to claim 6, characterized in that: The diameters of the multiple layers of the hammer block (16) decrease in sequence, and hammer teeth are circumferentially mounted on the end surface of the hammer block (16).

8. The pneumatic electric furnace taphole removal machine according to claim 1, characterized in that: The hammer head (17) is in the shape of a cylindrical cone.

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