Sealing structure for fake electrode of electroslag remelting furnace

Abstract

The utility model relates to the technical field of electrode sealing, in particular to a sealing structure for a fake electrode of an electroslag remelting furnace, which comprises an upper conductive copper shaft and a lower conductive copper shaft, the lower conductive copper shaft is fixed at the upper end of the upper conductive copper shaft, an electrode clamping seat is arranged in the lower conductive copper shaft, and a sealing fixing seat is sleeved at the upper end of the periphery of the electrode clamping seat. A material rod mandrel is fixed above the sealing fixing seat through a screw, a waterproof sleeve arranged on the periphery of the electrode clamping seat in a sleeving manner is arranged below the material rod mandrel, the upper end of the waterproof sleeve is connected with an upper sealing ring, and the lower end of the waterproof sleeve is connected with a lower sealing ring; the material rod mandrel can be dynamically sealed when the waterproof sleeve stretches out and draws back to be opened and closed, and the upper sealing ring and the lower sealing ring at the two ends of the waterproof sleeve can play a static sealing role, so that the sealing performance of the material rod mandrel in the sealing use process is improved, and the material rod mandrel is effectively prevented from being damaged when encountering water.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode sealing, in particular to a sealing structure of a false electrode used in an electroslag remelting furnace. Background Art

[0002] Electrode is a component in electronic or electrical devices and equipment, used as the two ends for inputting or outputting current in a conductive medium (solid, gas, vacuum or electrolyte solution). The pole that inputs current is called the anode or positive pole, and the pole that releases current is called the cathode or negative pole. There are various types of electrodes, such as cathode, anode, welding electrode, electric furnace electrode, etc.

[0003] Cooling water needs to flow between the conductive copper shaft outside the dummy electrode and the material rod core shaft inside it to cool the entire dummy electrode. The material rod core shaft slides relative to the conductive copper shaft due to working needs, so it needs to be sealed. The traditional sealing structure uses multiple O-rings for sealing. The O-ring has a better sealing effect under static sealing. During dynamic sealing, the sealing effect of the O-ring is related to the surface roughness of the parts, the matching size and the installation accuracy. When the material rod core shaft slides relative to the conductive copper shaft due to working needs, it is difficult to ensure the sealing effect, which may cause the material rod core shaft to be damaged by water. Utility Model Content

[0004] The utility model provides a sealing structure for a dummy electrode of an electroslag remelting furnace, which is beneficial to improving the sealing performance of an electrode rod during sealing use and effectively preventing a core shaft of the rod from being damaged by water.

[0005] In order to solve the problems of the prior art, the utility model discloses a sealing structure of a false electrode for an electroslag remelting furnace, comprising an upper conductive copper shaft and a lower conductive copper shaft, wherein the lower conductive copper shaft is fixed to the upper end of the upper conductive copper shaft;

[0006] An electrode clamping seat is provided in the lower conductive copper shaft, and a sealing fixing seat is sleeved on the upper end of the outer periphery of the electrode clamping seat. A material rod core shaft is fixed above the sealing fixing seat by screws, and a water-proof sleeve sleeved on the outer periphery of the electrode clamping seat is provided below the material rod core shaft. An upper sealing ring is connected to the upper end of the water-proof sleeve, and a lower sealing ring is connected to the lower end of the water-proof sleeve.

[0007] Furthermore, the upper end of the inner wall of the lower conductive copper shaft is connected to a sealing seat sleeved on the periphery of the electrode clamping seat, and the lower end of the sealing seat is connected to a guide locking sleeve sleeved on the periphery of the electrode clamping seat.

[0008] Furthermore, an insulating ring is connected between the outer wall of the guide locking sleeve and the inner wall of the lower conductive copper shaft.

[0009] Furthermore, a water sleeve is provided in the upper conductive copper shaft and is sleeved on the outer periphery of the material rod core shaft, and the water sleeve is fixed to the lower conductive copper shaft by screws.

[0010] Furthermore, the upper sealing ring is clamped between the sealing fixing seat and the material rod core shaft, and the lower sealing ring is clamped between the sealing seat and the lower conductive copper shaft.

[0011] Furthermore, the inner wall of the sealing seat is connected with at least two first sealing rings which are sleeved on the periphery of the electrode clamping seat, a second sealing ring is clamped between the sealing fixing seat and the material rod core shaft, and the second sealing ring is arranged on the inner periphery of the upper sealing ring, and the upper sealing ring, the lower sealing ring, the first sealing ring and the second sealing ring are all O-type.

[0012] Furthermore, the waterproof sleeve is a telescopic accordion structure.

[0013] Compared with the prior art, the utility model achieves the following beneficial effects:

[0014] The material rod core shaft and the sealing fixing seat are separated by a water-proof sleeve, and the water-proof sleeve adopts an accordion structure, which can be pulled open and folded and contracted. An upper sealing ring and a lower sealing ring similar to an O-type are used at the openings at both ends of the water-proof sleeve respectively. Since the lower end of the water-proof sleeve is installed on the lower conductive copper shaft, and the water-proof sleeve is installed between the material rod core shaft and the sealing fixing seat, when the material rod core shaft and the conductive copper shaft move relative to each other, the water-proof sleeve will expand and contract with the movement. The material rod core shaft will be dynamically sealed when the water-proof sleeve expands and contracts, and the upper sealing ring and the lower sealing ring at both ends of the water-proof sleeve can play a role of static sealing, thereby helping to improve the sealing performance of the material rod core shaft when sealed, and effectively preventing the material rod core shaft from being damaged by water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the upper conductive copper shaft and the lower conductive copper shaft of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the electrode clamping seat of the utility model;

[0018] Figure 4 This is a schematic diagram of the assembly structure of the material rod core shaft of the utility model;

[0019] Figure 5 This is a schematic diagram of the water-blocking sleeve structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the overall sealing working structure of the utility model.

[0021] Figure 1-6Middle: upper conductive copper shaft 1, lower conductive copper shaft 2, water sleeve 3, material rod core shaft 4, electrode clamping seat 5, sealing seat 6, first sealing ring 7, guide locking sleeve 8, insulating ring 9, pressure ring 10, second sealing ring 11, sealing fixing seat 12, water isolation sleeve 13, upper sealing ring 14, lower sealing ring 15. DETAILED DESCRIPTION

[0022] A sealing structure for a false electrode of an electroslag remelting furnace:

[0023] like Figure 1-4 As shown, in this embodiment, it includes an upper conductive copper shaft 1 and a lower conductive copper shaft 2, the lower conductive copper shaft 2 is fixed to the upper end of the upper conductive copper shaft 1, an electrode clamping seat 5 is arranged in the lower conductive copper shaft 2, a sealing fixing seat 12 is sleeved on the upper end of the outer periphery of the electrode clamping seat 5, a material rod core shaft 4 is fixed above the sealing fixing seat 12 by screws, a water-blocking sleeve 13 sleeved on the outer periphery of the electrode clamping seat 5 is arranged below the material rod core shaft 4, an upper sealing ring 14 is connected to the upper end of the water-blocking sleeve 13, a lower sealing ring 15 is connected to the lower end of the water-blocking sleeve 13, a sealing seat 6 sleeved on the outer periphery of the electrode clamping seat 5 is connected to the upper end of the inner wall of the lower conductive copper shaft 2, a guide locking sleeve 8 sleeved on the outer periphery of the electrode clamping seat 5 is connected to the lower end of the sealing seat 6, the upper sealing ring 14 is clamped between the sealing fixing seat 12 and the material rod core shaft 4, and the lower sealing ring 15 is clamped between the sealing seat 6 and the lower conductive copper shaft 2;

[0024] When the sealing structure of the dummy electrode provides waterproof protection for the material rod core shaft 4, if the material rod core shaft 4 needs to slide relatively within the upper conductive copper shaft 1 and the lower conductive copper shaft 2 due to work needs, the material rod core shaft 4 is separated from the sealing fixing seat 12 by the watertight sleeve 13, and the watertight sleeve 13 adopts an accordion structure, which can be pulled open and folded and contracted. An upper sealing ring 14 and a lower sealing ring 15 similar to an O-type are respectively used at the openings at both ends of the watertight sleeve 13. Since the upper sealing ring 14 is clamped between the sealing fixing seat 12 and the material rod core shaft 4, and the lower sealing ring 15 is clamped between the sealing seat 6 and the lower conductive copper shaft 2, the upper sealing ring 14 and the lower sealing ring 15 can play a role in static sealing of the material rod core shaft 4.

[0025] like Figure 1 , 4As shown in Figures 5 and 6, in this embodiment, a water-blocking sleeve 13 sleeved on the periphery of the electrode clamping seat 5 is provided below the material rod core shaft 4, an upper sealing ring 14 is connected to the upper end of the water-blocking sleeve 13, and a lower sealing ring 15 is connected to the lower end of the water-blocking sleeve 13. The upper end of the inner wall of the lower conductive copper shaft 2 is connected to a sealing seat 6 sleeved on the periphery of the electrode clamping seat 5, and the lower end of the sealing seat 6 is connected to a guide locking sleeve 8 sleeved on the periphery of the electrode clamping seat 5. The upper sealing ring 14 is clamped between the sealing fixing seat 12 and the material rod core shaft 4, and the lower sealing ring 15 is clamped between the sealing seat 6 and the lower conductive copper shaft 2. The water-blocking sleeve 13 is a telescopic accordion structure.

[0026] Since the waterproof sleeve 13 is installed between the material rod core shaft 4 and the sealing fixing seat 12, when the electrode clamping seat 5 pushes the sealing fixing seat 12 and the material rod core shaft 4 up and down reciprocatingly, the material rod core shaft 4 moves relatively in the upper conductive copper shaft 1 and the lower conductive copper shaft 2. Since the upper sealing ring 14 is clamped between the sealing fixing seat 12 and the material rod core shaft 4, and the lower sealing ring 15 is clamped between the sealing seat 6 and the lower conductive copper shaft 2, under the premise that the lower sealing ring 15 does not move, when the sealing fixing seat 12 and the material rod core shaft 4 move synchronously, the upper sealing ring 14 will be pushed upward or pulled downward, and at the same time, the upper sealing ring 14 will stretch or compress the waterproof sleeve 13. The water jacket 13 and the water-blocking sleeve 13 will expand and contract as the water-blocking sleeve 13 moves. When the water-blocking sleeve 13 expands and contracts, the material rod core shaft 4 will be dynamically sealed, and the upper sealing ring 14 and the lower sealing ring 15 at both ends of the water-blocking sleeve 13 can play a role of static sealing. In summary, through the cooperation of the water-blocking sleeve 13, the upper sealing ring 14 and the lower sealing ring 15, it is beneficial to achieve dynamic sealing and static sealing effects on the material rod core shaft 4. Compared with the prior art that only uses sealing rings for sealing, the water-blocking sleeve 13 is added to improve the sealing performance, which is beneficial to improving the sealing performance of the material rod core shaft 4 when it is used for sealing, and effectively preventing the material rod core shaft 4 from being damaged by water.

[0027] like Figure 1-3 As shown, in this embodiment, the inner wall of the sealing seat 6 is connected with at least two first sealing rings 7 sleeved on the periphery of the electrode clamping seat 5, and a second sealing ring 11 is clamped between the sealing fixing seat 12 and the material rod core shaft 4, and the second sealing ring 11 is arranged inside the upper sealing ring 14. The upper sealing ring 14, the lower sealing ring 15, the first sealing ring 7 and the second sealing ring 11 are all O-shaped, and the upper conductive copper shaft 1 is provided with a water jacket 3 sleeved on the periphery of the material rod core shaft 4, and the water jacket 3 is fixed to the lower conductive copper shaft 2 by screws;

[0028] Since the first sealing ring 7 is arranged between the electrode clamping seat 5 and the sealing seat 6, when the electrode clamping seat 5 reciprocates along the guide locking sleeve 8, the first sealing ring 7 is conducive to improving the sealing performance during movement, and the second sealing ring 11 is arranged inside the upper sealing ring 14, and the second sealing ring 11 is pressed between the material rod core shaft 4 and the sealing fixing seat 12, so the second sealing ring 11 is conducive to better improving the sealing performance of the connection between the material rod core shaft 4 and the sealing fixing seat 12.

[0029] like Figure 1 As shown, in this embodiment, an insulating ring 9 is connected between the outer wall of the guide locking sleeve 8 and the inner wall of the lower conductive copper shaft 2;

[0030] By arranging an insulating ring 9 between the outer wall of the guide locking sleeve 8 and the outer wall of the lower conductive copper shaft 2, an insulating effect is achieved to prevent leakage, thereby ensuring safety in use.

Claims

1. A sealing structure for a false electrode of an electroslag remelting furnace, comprising an upper conductive copper shaft (1) and a lower conductive copper shaft (2), wherein the lower conductive copper shaft (2) is fixed to the upper end of the upper conductive copper shaft (1), characterized in that: An electrode clamping seat (5) is provided inside the lower conductive copper shaft (2), and a sealing fixing seat (12) is sleeved on the upper end of the outer periphery of the electrode clamping seat (5), a material rod core shaft (4) is fixed above the sealing fixing seat (12) by screws, and a water-proof sleeve (13) sleeved on the outer periphery of the electrode clamping seat (5) is provided below the material rod core shaft (4), an upper sealing ring (14) is connected to the upper end of the water-proof sleeve (13), and a lower sealing ring (15) is connected to the lower end of the water-proof sleeve (13).

2. The sealing structure of a false electrode for an electroslag remelting furnace according to claim 1, characterized in that: The upper end of the inner wall of the lower conductive copper shaft (2) is connected to a sealing seat (6) sleeved on the periphery of the electrode clamping seat (5), and the lower end of the sealing seat (6) is connected to a guide locking sleeve (8) sleeved on the periphery of the electrode clamping seat (5).

3. The sealing structure of a false electrode for an electroslag remelting furnace according to claim 2, characterized in that: An insulating ring (9) is connected between the outer wall of the guide locking sleeve (8) and the inner wall of the lower conductive copper shaft (2).

4. The sealing structure of a false electrode for an electroslag remelting furnace according to claim 1, characterized in that: The upper conductive copper shaft (1) is provided with a water sleeve (3) sleeved on the outer periphery of the material rod core shaft (4); the water sleeve (3) is fixed to the lower conductive copper shaft (2) by screws.

5. The sealing structure of a dummy electrode for an electroslag remelting furnace according to claim 2, characterized in that: The upper sealing ring (14) is clamped between the sealing fixing seat (12) and the material rod core shaft (4), and the lower sealing ring (15) is clamped between the sealing seat (6) and the lower conductive copper shaft (2).

6. The sealing structure of a false electrode for an electroslag remelting furnace according to claim 5, characterized in that: The inner wall of the sealing seat (6) is connected to at least two first sealing rings (7) which are sleeved on the outer periphery of the electrode clamping seat (5); a second sealing ring (11) is clamped between the sealing fixing seat (12) and the material rod core shaft (4); the second sealing ring (11) is arranged on the inner periphery of the upper sealing ring (14); the upper sealing ring (14), the lower sealing ring (15), the first sealing ring (7) and the second sealing ring (11) are all O-type.

7. The sealing structure of a false electrode for an electroslag remelting furnace according to claim 1, characterized in that: The water-isolating sleeve (13) is a telescopic accordion structure.

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