Simple atmosphere protection device for conventional electroslag furnace

Abstract

The utility model provides a simple atmosphere protection device for a conventional electroslag furnace, which comprises a crystallizer, a protection cover mounted at the top of the crystallizer through a plurality of bolts, a feeding hole formed in the top of the protection cover, and a consumable electrode penetrating through the feeding hole and entering the crystallizer, the simple atmosphere protection device comprises a protection cover, two closed semi-rings symmetrically arranged on the upper surface of the protection cover, two clamping semi-rings fixed to the upper surfaces of the two closed semi-rings correspondingly, and a position control part fixed to the bottom of one of the closed semi-rings and the inner wall of the clamping semi-ring correspondingly. When the consumable electrode is assembled and taken out, the feeding port can be exposed, the consumable electrode is prevented from making contact with the two sealing sleeves when assembled and taken out, the situation that the consumable electrode scratches and destroys the two sealing sleeves is avoided, the two sealing sleeves are matched with the guiding piece, the sealing performance of the top of the protection cover is guaranteed when the consumable electrode is used, and the argon protection effect is guaranteed while the argon protection effect is guaranteed. And the argon consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroslag furnace technical field, specifically, a conventional electroslag furnace atmosphere protection simple device. BACKGROUND

[0002] The electroslag furnace is a kind of special smelting equipment for melting self-consumption electrode inserted into slag pool by using remelting current generated heat energy, and metal droplet is crystallized into electroslag ingot in water-cooled crystallizer after being cleaned by slag liquid.The electroslag furnace is indispensable production equipment for special steel plant.Most electroslag furnaces are open type, and air humidity is large, which can cause pore defect of steel ingot and increase hydrogen content, if the hydrogen content in steel is high, white spot can be generated, leading to scrap, and causing loss.Therefore, gas protection measures should be taken during electroslag remelting to prevent external air from entering crystallizer, so as to protect steel ingot in smelting process from oxidation, pollution and other adverse effects.

[0003] The existing protection device is connected with the self-consumption electrode through the sealing element at the top, and the connection between the sealing element and the self-consumption electrode is a soft connection, which facilitates the stable downward movement of the self-consumption electrode during use.Because the lower end surface of the self-consumption electrode is prone to unevenness due to various reasons, the lower end of the self-consumption electrode is prone to contact the sealing element during installation and removal, which can damage the sealing element, and the sealing condition between the protection device and the self-consumption electrode is not good, which can affect the quality of electroslag steel refining in the crystallizer. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a conventional electroslag furnace atmosphere protection simple device to solve the above problems.

[0005] In order to achieve the above purpose, the utility model embodiment provides a conventional electroslag furnace atmosphere protection simple device, which comprises: a crystallizer, a protection cover installed on the top of the crystallizer through a plurality of bolts, a feeding port opened at the top of the protection cover, a self-consumption electrode passing through the feeding port and entering the crystallizer, two closed half-rings symmetrically arranged on the upper surface of the protection cover, two clamping half-rings fixed on the upper surfaces of the two closed half-rings respectively, two sealing sleeves fixed on the inner walls of the bottom of one closed half-ring and the clamping half-ring and the bottom of the other closed half-ring and the clamping half-ring respectively, a control part and two guide parts installed on the protection cover and the two closed half-rings, a cooling part arranged on the protection cover and the control part, and a gas conveying assembly installed on the protection cover, wherein

[0006] The control part is suitable for controlling the two closed half-rings and the two clamping half-rings to move close to or away from each other;

[0007] Two of the guides are adapted to push the two closed half-rings to extrude and abut against the protective cover when the two closed half-rings are close to each other;

[0008] The cooling member is adapted to deliver cooling water to the protective cover and the position control member;

[0009] The gas delivery assembly is adapted to deliver argon gas into the protective cover.

[0010] Further, the position control member comprises a control motor mounted on the protective cover, two bidirectional screw rods rotatably mounted on the upper surface of the protective cover through a plurality of bearing seats, two transmission gears fixedly sleeved on the two bidirectional screw rods respectively, a toothed belt meshingly sleeved on the two transmission gears, two control rods threadedly connected to the two ends of the two bidirectional screw rods, two wedge-shaped push blocks fixed symmetrically on the two control rods, two cut grooves respectively formed on the two closed half-rings and corresponding to the two wedge-shaped push blocks, a pulling frame fixed symmetrically on the two control rods, and two control blocks fixed symmetrically on the two closed half-rings.

[0011] The output end of the control motor is fixedly connected to one of the bidirectional screw rods.

[0012] Further, the guide comprises a control frame fixed on the protective cover, a pressing block fixed on the control frame, and two pressing grooves symmetrically formed on the two closed half-rings.

[0013] Further, the cooling member comprises a cooling cavity formed in the protective cover, a liquid discharge pipe in communication with the upper end of the cooling cavity, a liquid delivery pipe in communication with the lower end of the cooling cavity, a plurality of isolation rings fixed equidistantly in the cooling cavity, and a plurality of liquid passage grooves respectively formed in the plurality of isolation rings.

[0014] The two liquid passage grooves on the two isolation rings close to each other are arranged alternately.

[0015] Further, the cooling member further comprises a cooling cover fixedly sleeved on the outside of the control motor, and a liquid inlet pipe in communication with one side of the cooling cover.

[0016] The other end of the liquid delivery pipe is in communication with the other side of the cooling cover.

[0017] Further, the gas delivery assembly comprises a gas delivery ring fixed in the protective cover, a plurality of gas distribution grooves annularly arranged at the bottom of the gas delivery ring, a gas delivery pipe in communication at one end with the upper end of the gas delivery ring and penetrating through the protective cover, and an exhaust pipe in communication with the top of the protective cover.

[0018] Further, a high-temperature-resistant sealing ring is arranged between the crystallizer and the protective cover.

[0019] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0020] The conventional electroslag furnace atmosphere protection simple device can control the two closed half rings and the two clamping half rings to approach or move away from each other through the setting control position piece, and then can complete the relative closing and unfolding of the feeding opening, so that the self-consuming motor is inserted into the crystallizer through the feeding opening, and when the self-consuming electrode is controlled to be taken out from the crystallizer after the electroslag remelting is completed, the lower end of the self-consuming electrode does not contact the two sealing sleeves, thereby preventing the self-consuming electrode from damaging the two sealing sleeves.

[0021] When the self-consuming electrode is inserted into the crystallizer and works, the control position piece controls the two closed half rings and the two clamping half rings to approach each other, and under the cooperation of the guide piece, the two closed half rings and the two clamping half rings have a downward moving trend while rubbing against each other, thereby making the two sealing sleeves contact and press each other and tightly abut against the upper surface of the protective cover, so that the feeding opening can be effectively closed, and when the self-consuming electrode moves downward and works, the two sealing sleeves tightly contact the self-consuming electrode, thereby ensuring the sealing property of the top of the protective cover and avoiding the leakage of argon gas when the gas conveying assembly works, which ensures the effective protection of the electroslag remelting in the crystallizer by argon gas, reduces the loss of argon gas, and avoids the safety hidden danger caused by the leakage of argon gas. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and embodiments.

[0023] Figure 1 The utility model discloses a perspective view is shown.

[0024] Figure 2 The utility model discloses a partial split perspective view is shown. Figure One ;

[0025] Figure 3 The utility model discloses a partial perspective view is shown.

[0026] Figure 4 The utility model discloses a partial split perspective view is shown. Figure One ;

[0027] Figure 5 The utility model discloses a partial split perspective view is shown. Figure Two ;

[0028] Figure 6 The utility model discloses a partial split perspective view is shown. Figure Two .

[0029] In the drawings

[0030] 1. Crystallizer; 2. Protective cover; 3. Feed inlet; 4. Consumable electrode; 5. Enclosed semi-ring; 6. Clamping semi-ring; 7. Sealing sleeve; 8. Positioning component; 9. Guide component; 10. Cooling component; 11. Gas supply assembly; 12. Control motor; 13. Bidirectional lead screw; 14. Transmission gear; 15. Toothed belt; 16. Control rod; 17. Wedge pusher; 18. Groove; 19. Pulling frame; 20. Control block; 21. Control frame; 22. Pressing block; 23. Pressing groove; 24. Cooling chamber; 25. Drain pipe; 26. Liquid supply pipe; 27. Isolation ring; 28. Liquid passage groove; 29. ​​Cooling cover; 30. Liquid inlet pipe; 31. Gas supply ring; 32. Gas distribution groove; 33. Gas supply pipe; 34. High-temperature resistant sealing ring; 35. Exhaust pipe. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0032] like Figures 1-6 As shown, a simple atmosphere protection device for a conventional electroslag furnace includes: a crystallizer 1; a protective cover 2 mounted on top of the crystallizer 1 by multiple bolts; a feed inlet 3 opened on top of the protective cover 2; a consumable electrode 4 passing through the feed inlet 3 and entering the crystallizer 1; two closed semi-rings 5 ​​symmetrically arranged on the upper surface of the protective cover 2; two clamping semi-rings 6 respectively fixed to the upper surface of the two closed semi-rings 5; two sealing sleeves 7 respectively fixed to the bottom of one closed semi-ring 5 and the inner wall of the clamping semi-ring 6, and the bottom of the other closed semi-ring 5 and the inner wall of the clamping semi-ring 6; a control element 8 and two guide elements 9 installed on the protective cover 2 and the two closed semi-rings 5; a cooling element 10 disposed on the protective cover 2 and the control element 8; and a gas supply assembly 11 installed on the protective cover 2.

[0033] The positioning element 8 is adapted to control the two closed semi-rings 5 ​​and the two clamping semi-rings 6 to move closer or further apart from each other;

[0034] The two guide members 9 are adapted to push the two closed semi-rings 5 ​​to press against the protective cover 2 when the two closed semi-rings 5 ​​are close to each other;

[0035] The cooling component 10 is adapted to supply cooling water to the protective cover 2 and the control component 8;

[0036] The gas delivery assembly 11 is suitable for delivering argon into the protective cover 2. In use, the two sealing half-rings 5 and the two clamping half-rings 6 can be controlled to move close to or away from each other by the control member 8, thereby achieving relative sealing and unfolding of the charging port 3, so that the self-consuming electrode 4 can be inserted into the crystallizer 1 through the charging port 3, and when the self-consuming electrode 4 is controlled to be taken out of the crystallizer 1 after the electroslag remelting is completed, the lower end of the self-consuming electrode 4 does not contact the two sealing sleeves 7, thereby preventing the self-consuming electrode 4 from damaging the two sealing sleeves 7. Then, the argon can be uniformly delivered into the protective cover 2 and the crystallizer 1 by the gas delivery assembly 11, so as to discharge the air in the protective cover 2 and the crystallizer 1 and provide atmosphere protection during the electroslag remelting in the crystallizer 1. When the self-consuming electrode 4 is inserted into the crystallizer 1 and works, the two sealing half-rings 5 and the two clamping half-rings 6 are controlled to move close to each other by the control member 8, and under the cooperation of the guide member 9, the two sealing half-rings 5 and the two clamping half-rings 6 have a downward moving trend while abutting against each other, thereby causing the two sealing sleeves 7 to abut against each other and tightly abut against the upper surface of the protective cover 2. The diameter of the two sealing half-rings 5 after splicing is greater than the diameter of the charging port 3, so that the charging port 3 can be effectively sealed. When the two sealing sleeves 7 abut against each other, the inner diameter of the two sealing sleeves 7 is consistent with the outer diameter of the self-consuming electrode 4, thereby ensuring the sealing of the top of the protective cover 2 when the self-consuming electrode 4 moves downward, avoiding leakage of argon when the gas delivery assembly 11 works, thereby reducing the loss of argon while ensuring the effective protection of the electroslag remelting in the crystallizer 1, and avoiding the safety hazard caused by the leakage of argon. When the protective cover 2 is used, the cooling member 10 can cool the control member 8 and the control motor 12 at the same time, thereby avoiding deformation of the protective cover 2 due to heating, instability of the control motor 12 in a high-temperature environment, and prolonging the service life of the overall structure.

[0037] Optionally, the control member 8 comprises a control motor 12 mounted on the protective cover 2, two bidirectional screws 13 rotatably mounted on the upper surface of the protective cover 2 through a plurality of bearing seats, two transmission gears 14 fixedly sleeved on the two bidirectional screws 13, respectively, a toothed belt 15 meshingly sleeved on the two transmission gears 14, two control rods 16 threadedly connected to the two ends of the two bidirectional screws 13, two wedge-shaped push blocks 17 symmetrically fixed on the two control rods 16, cut grooves 18 respectively formed in the two sealing half-rings 5 and corresponding to the two wedge-shaped push blocks 17, a pulling frame 19 symmetrically fixed on the two control rods 16, and two control blocks 20 symmetrically fixed on the two sealing half-rings 5.

[0038] The output end of the control motor 12 is fixedly connected with one of the bidirectional lead screws 13. After the consumable electrode 4 passes through the protective cover 2 and is inserted into the crystallizer 1, the control motor 12 is operated to drive one of the bidirectional lead screws 13 to rotate, and the other bidirectional lead screw 13 is driven to rotate synchronously under the cooperation of the toothed belt 15 and the two transmission gears 14, so that the two control rods 16 can be controlled to move close to or away from each other. When the two control rods 16 move close to each other, the two wedge-shaped push blocks 17 contact the two closed half-rings 5 respectively, so as to drive the two closed half-rings to move close to each other, and under the cooperation of the two cutting grooves 18 and the two wedge-shaped push blocks 17, the two closed half-rings 5 and the two clamping half-rings 6 move close to each other, so that the sealing sleeves 7 at the positions where the two closed half-rings 5 and the two clamping half-rings 6 contact each other are in close contact, and the edges of the two closed half-rings 5 are pressed and tend to move downward, so that the sealing sleeves 7 at the bottom of the two closed half-rings 5 are pressed and closely attached to the protective cover 2, so that the two closed half-rings 5 and the two clamping half-rings 6 can effectively seal the inlet 3, and the wrapping effect of the two sealing sleeves 7 on the consumable electrode 4 is ensured, so as to effectively prevent ammonia gas from escaping through the inlet 3 and the position where the consumable electrode 4 contacts the two clamping half-rings 6, and the argon protection effect in the crystallizer 1 is ensured. When the electroslag remelting is completed, the two control rods 16 are controlled to move away from each other, so that the two control blocks 20 are driven to move away from each other in the process that the two pulling frames 19 move away from each other, and the two closed half-rings 5 are driven to move away from each other, so that the inlet 3 is exposed, the consumable electrode 4 is conveniently taken out of the crystallizer 1 and the protective cover 2, and the two sealing sleeves 7 are effectively prevented from being damaged due to the uneven surface of the consumable electrode 4 when the consumable electrode 4 moves vertically, so as to ensure the sealing effect of the two sealing sleeves 7 at the position where the two sealing sleeves 7 contact the consumable electrode 4.

[0039] Optionally, the guide 9 comprises a control frame 21 fixed on the protective cover 2, a pressing block 22 fixed on the control frame 21, and two pressing grooves 23 symmetrically formed on the two closed half-rings 5. When the control block 8 drives the two closed half-rings 5 to move close to each other, the pressing block 22 can contact the two pressing grooves 23 at the same time, so as to further ensure the contact effect of the two closed half-rings 5 and the protective cover 2 at the abutting position of the two closed half-rings 5 and the two clamping half-rings 6 under the auxiliary pushing of the two pressing blocks 22 when the two closed half-rings 5 and the two clamping half-rings 6 move close to each other. At the same time, the two control frames 21 in the two guides 9 can limit the two closed half-rings 5, so as to prevent the two closed half-rings 5 from moving vertically when the control block 8 drives the two closed half-rings 5 to move, and ensure the abutting effect of the two closed half-rings 5.

[0040] Optionally, the cooling device 10 comprises a cooling cavity 24 formed in the protective cover 2, a liquid outlet pipe 25 connected to the upper end of the cooling cavity 24, a liquid inlet pipe 26 connected to the lower end of the cooling cavity 24, a plurality of isolation rings 27 fixed in the cooling cavity 24 at equal intervals, and a plurality of liquid passage grooves 28 formed in the plurality of isolation rings 27 respectively.

[0041] The two liquid passage grooves 28 on the two isolation rings 27 close to each other are arranged alternately, the cooling liquid entering the liquid inlet pipe 26 can be delivered to the inner bottom of the cooling cavity 24, and as the cooling liquid is continuously delivered into the cooling cavity 24 through the liquid inlet pipe 26, it gradually fills the cooling cavity 24 through the plurality of liquid passage grooves 28, and is discharged from the top of the cooling cavity 24 through the liquid outlet pipe 25. Due to the arrangement of the plurality of isolation rings 27 and the plurality of liquid passage grooves 28, the temperature distribution of the cooling liquid at the same horizontal height is more uniform, thereby ensuring the cooling effect of the cooling liquid on the protective cover 2.

[0042] Optionally, the cooling device 10 further comprises a cooling cover 29 fixedly sleeved on the outside of the control motor 12, and a liquid inlet pipe 30 connected to one side of the cooling cover 29.

[0043] The other end of the liquid inlet pipe 26 is connected to the other side of the cooling cover 29, and during use, the cooling liquid can be continuously input into the cooling cover 29 through the liquid inlet pipe 30, thereby continuously cooling the control motor 12, thereby effectively improving the safety and stability of the control motor 12 when used in a high-temperature environment, and the cooling liquid in the cooling cover 29 can enter the liquid inlet pipe 26 for continuous use.

[0044] Optionally, the gas delivery assembly 11 comprises a gas delivery ring 31 fixed in the protective cover 2, a plurality of gas distribution grooves 32 arranged in an annular array at the bottom of the gas delivery ring 31, a gas delivery pipe 33 having one end connected to the upper end of the gas delivery ring 31 and the other end penetrating through the protective cover 2, and an exhaust pipe connected to the top of the protective cover 2. During use, argon gas is continuously input into the gas delivery ring 31 through the gas delivery pipe 33, and the argon gas enters the protective cover 2 through the plurality of gas distribution grooves 32. Because the density of argon gas is greater than that of air, the argon gas will sink into the crystallizer 1, and the air in the protective cover 2 will be squeezed upward. As the argon gas continues to be added, the air will be discharged through the exhaust pipe, and the argon atmosphere in the crystallizer 1 can protect the molten pool and prevent oxidation and nitriding, thereby improving the welding quality.

[0045] Optionally, a high-temperature-resistant sealing ring 34 is arranged between the crystallizer 1 and the protective cover 2, which can effectively seal the connection between the protective cover 2 and the crystallizer 1 to prevent leakage of argon gas from the connection between the protective cover 2 and the crystallizer 1.

[0046] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A simple device for atmosphere protection in a conventional electroslag furnace, characterized in that, It includes: The crystallizer (1) is installed on the top of the protection cover (2) of the crystallizer (1) by a plurality of bolts, the inlet (3) is opened at the top of the protection cover (2), the consumable electrode (4) passes through the inlet (3) and enters the crystallizer (1), two closed half rings (5) are symmetrically arranged on the upper surface of the protection cover (2), two clamping half rings (6) are respectively fixed on the upper surfaces of the two closed half rings (5), two sealing sleeves (7) are respectively fixed on the bottom of one of the closed half rings (5) and the inner wall of the clamping half ring (6), and the other closed half ring (5) and the clamping half ring (6), the control part (8) and the two guide parts (9) are installed on the protection cover (2) and the two closed half rings (5), the cooling part (10) is arranged on the protection cover (2) and the control part (8), and the gas conveying assembly (11) is installed on the protection cover (2), wherein The control part (8) is suitable for controlling the mutual approach or away of the two closed half rings (5) and the two clamping half rings (6); Two said guide parts (9) are suitable for pushing two closed half rings (5) to extrude and resist the protection cover (2) when two closed half rings (5) approach each other; The cooling part (10) is suitable for conveying cooling water to the protection cover (2) and the control part (8); The gas conveying assembly (11) is suitable for conveying argon gas into the protection cover (2).

2. The simple device for protecting the atmosphere of the conventional electroslag furnace according to claim 1, wherein The control part (8) includes a control motor (12) installed on the protection cover (2), two bidirectional screw rods (13) rotatably installed on the upper surface of the protection cover (2) through a plurality of bearing seats, two transmission gears (14) fixedly sleeved on the two bidirectional screw rods (13), respectively, a toothed belt (15) meshingly sleeved on the two transmission gears (14), two control rods (16) threadedly connected with both ends of the two bidirectional screw rods (13), two wedge-shaped push blocks (17) symmetrically fixed on the two control rods (16), two cutting grooves (18) respectively formed in the two closed half rings (5) and corresponding to the two wedge-shaped push blocks (17), a pulling frame (19) symmetrically fixed on the two control rods (16), and two control blocks (20) symmetrically fixed on the two closed half rings (5). The output end of the control motor (12) is fixedly connected with one of the bidirectional screw rods (13).

3. The simple device for protecting the atmosphere of the conventional electroslag furnace according to claim 2, wherein The guide part (9) includes a control frame (21) fixed on the protection cover (2), a pressing block (22) fixed on the control frame (21), and two pressing grooves (23) symmetrically formed in the two closed half rings (5).

4. The simple device for protecting the atmosphere of the conventional electroslag furnace according to claim 3, wherein The cooling member (10) comprises a cooling cavity (24) formed in the protective cover (2), a liquid discharge pipe (25) in communication with the upper end of the cooling cavity (24), a liquid delivery pipe (26) in communication with the lower end of the cooling cavity (24), a plurality of isolation rings (27) fixed equidistantly in the cooling cavity (24), and a plurality of liquid passage grooves (28) formed in the isolation rings (27) respectively; Two liquid passage grooves (28) on two isolation rings (27) close to each other are arranged alternately.

5. The atmosphere protection simple device for a conventional electroslag furnace according to claim 4, characterized in that, The cooling member (10) further comprises a cooling cover (29) fixedly sleeved on the outside of the control motor (12), and a liquid inlet pipe (30) in communication with one side of the cooling cover (29); The other end of the liquid delivery pipe (26) is in communication with the other side of the cooling cover (29).

6. The atmosphere protection simple device for a conventional electroslag furnace according to claim 1, characterized in that, The gas delivery assembly (11) comprises a gas delivery ring (31) fixed in the protective cover (2), a plurality of gas distribution grooves (32) formed in the bottom of the gas delivery ring (31) in an annular array, a gas delivery pipe (33) in communication with the upper end of the gas delivery ring (31) at one end and penetrating through the protective cover (2) at the other end, and an exhaust pipe (35) in communication with the top of the protective cover (2).

7. The atmosphere protection simple device for a conventional electroslag furnace according to claim 6, characterized in that, A high-temperature-resistant sealing ring (34) is arranged between the crystallizer (1) and the protective cover (2).

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