Plasma torch universal swing telescopic and sealing device

Abstract

The application discloses a universal swing telescopic and sealing device of a plasma torch, which comprises a spherical sealing and a zigzag swing connecting piece, the spherical sealing passes through the hollow part of the zigzag swing connecting piece, the spherical sealing comprises oppositely connected upper and lower spherical surfaces, the abutting surface of the upper and lower spherical surfaces is spherical, and a spherical sealing piece is arranged at the abutting surface, the upper spherical surface is detachably connected to a first shaft swing installation plate above the upper spherical surface, the lower spherical surface is detachably connected to a device installation plate below the lower spherical surface, the spherical sealing and the interior of the first shaft swing installation plate have a channel for the plasma torch to pass through, and the first shaft swing installation plate, the upper spherical surface of the spherical sealing and the zigzag swing connecting piece can swing horizontally and vertically relative to the lower spherical surface of the spherical sealing under the drive of external force to realize the universal swing and sealing of the plasma torch. The device can realize the swing, telescopic and sealing functions of the plasma torch at any angle.

Description

Technical Field

[0001] This invention relates to the field of plasma welding and smelting of sponge titanium, pure titanium and titanium alloys, belonging to the field of non-ferrous metal processing, and particularly to a universal swing extension and sealing device for a plasma torch. Background Technology

[0002] Titanium alloys are reactive metals and are key materials for aero-engine rotor components. The presence of hard alpha defects in these components can lead to unpredictable consequences. Numerous studies have shown that vacuum arc remelting (VAR) furnaces have very limited ability to eliminate hard alpha defects in titanium alloys. To remove high-density hard alpha inclusions from titanium alloys, an important method is to use two or more plasma torches with a copper crucible for plasma melting. This process precipitates the high-density hard alpha inclusions in a solidified shell at the bottom of the crucible, thus removing the inclusions.

[0003] During plasma melting, the plasma torch needs to oscillate and extend at different angles and directions to accommodate copper crucibles of different sizes and specifications, while ensuring a vacuum seal. Therefore, it is essential to design a device capable of omnidirectional oscillation and extension while maintaining a tight seal. Summary of the Invention

[0004] The purpose of this invention is to provide a universal swing extension and sealing device for a plasma torch. This device can realize the swing, extension and sealing functions of the plasma torch at any angle, so that the plasma torch can adapt to different working conditions.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A universal oscillating telescopic and sealing device for a plasma torch includes a spherical seal and a loop-shaped oscillating connector. The spherical seal passes through the hollow portion of the loop-shaped oscillating connector. The spherical seal includes an upper spherical surface and a lower spherical surface that meet. The meeting surface of the upper and lower spherical surfaces is spherical, and a spherical seal is provided at the meeting surface. The upper spherical surface and the loop-shaped oscillating connector are detachably connected to a first axial oscillating mounting plate located above them. The lower spherical surface is detachably connected to a device mounting plate located below it. The spherical seal and the first axial oscillating mounting plate have channels for the plasma torch to pass through. Under external force, the first axial oscillating mounting plate, the upper spherical surface of the spherical seal, and the loop-shaped oscillating connector can oscillate laterally and longitudinally relative to the lower spherical surface of the spherical seal to achieve universal oscillation and sealing of the plasma torch.

[0007] Preferably, the loop-shaped swing connector is provided with a first-axis hydraulic cylinder at one end in the transverse direction, the first-axis swing mounting plate is provided with a second-axis hydraulic cylinder at one end in the longitudinal direction, and the first-axis swing mounting plate is provided with a third-axis hydraulic cylinder at both ends in the transverse direction. The first-axis hydraulic cylinder drives the loop-shaped swing connector and the first-axis swing mounting plate mounted on it to swing longitudinally, and the second-axis hydraulic cylinder drives the first-axis swing mounting plate to swing laterally.

[0008] Preferably, an end face sealing ring is provided between the upper spherical surface and the first shaft swing mounting plate, an end face sealing ring is provided between the lower spherical surface and the device mounting plate, and a spherical sealing ring is provided between the upper spherical surface and the lower spherical surface.

[0009] Preferably, a first shaft hydraulic cylinder fixing component is provided above the lateral side of the loop-shaped swing connector, the connecting flange of the first shaft hydraulic cylinder is connected to the loop-shaped swing connector through the first shaft hydraulic cylinder fixing component, and the lower end of the first shaft hydraulic cylinder is connected to a first shaft hydraulic cylinder connecting seat.

[0010] Preferably, a second shaft hydraulic cylinder fixing component is provided on the longitudinal direction of the first shaft swing mounting plate, the connecting flange of the second shaft hydraulic cylinder is connected to the first shaft swing mounting plate through the second shaft hydraulic cylinder fixing component, and the lower end of the second shaft hydraulic cylinder is connected to a second shaft hydraulic cylinder connecting seat.

[0011] Preferably, it also includes a plasma torch mounting plate, which is disposed above the first axial swing mounting plate, and the plasma torch is mounted in the middle of the plasma torch mounting plate.

[0012] Preferably, a third-axis hydraulic cylinder connecting seat is installed at each of the two horizontal upper ends of the first-axis swing mounting plate, the lower end of the third-axis hydraulic cylinder is connected to the third-axis hydraulic cylinder connecting seat, and the connecting flanges of the two third-axis hydraulic cylinders are respectively connected to the two ends of the plasma torch mounting plate.

[0013] Preferably, a first fisheye connector is installed in the transverse direction of the spiral swing connector. A first shaft swing mounting plate connecting seat is detachably connected above the first fisheye connector. A first shaft swing mounting plate is connected above the first shaft swing mounting plate connecting seat. A first rotating shaft is connected below the first fisheye connector.

[0014] Preferably, a second fisheye connector is installed in the longitudinal direction of the spiral swing connector, a second rotating shaft is connected above the second fisheye connector, and a second axis swing connector seat of the spiral connector is detachably connected below the second fisheye connector.

[0015] The beneficial effects of this invention are as follows: the first-axis hydraulic cylinder drives the spiral swing connector and the upper spherical surface to swing longitudinally, realizing the universal swing and sealing of the plasma torch; the second-axis hydraulic cylinder drives the first-axis swing mounting plate and the upper spherical surface to swing laterally, realizing the universal swing and sealing of the plasma torch. This allows the plasma torch to swing, extend, and seal at any angle, enabling it to adapt to different working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the universal swing extension and sealing device for the plasma torch of the present invention.

[0017] Figure 2 This is a front view of the universal swing extension and sealing device for the plasma torch of the present invention.

[0018] Figure 3 This is a partial cross-sectional view of the spherical seal and the first rotating shaft of the present invention.

[0019] Figure 4 This is a cross-sectional view of the spherical seal of the present invention.

[0020] Figure 5 This is a partial cross-sectional view of the second rotation axis of the present invention.

[0021] In the diagram: 1. Third-axis hydraulic cylinder; 2. Plasma torch mounting plate; 3. Third-axis hydraulic cylinder connecting seat; 4. First-axis swing mounting plate; 5. First-axis hydraulic cylinder; 6. Recurved swing connector; 7. First-axis hydraulic cylinder fixing component; 8. First-axis hydraulic cylinder connecting seat; 9. Second-axis hydraulic cylinder; 10. Second rotating shaft; 11. Second-axis hydraulic cylinder connecting seat; 12. Second-axis hydraulic cylinder fixing component; 13. First rotating shaft; 14. Spherical seal; 15. First-axis swing mounting plate connecting seat; 16. Recurved component second-axis swing connecting seat; 17. First fisheye connector; 18. Second fisheye connector; 19. Device mounting plate; 14-1. Upper spherical surface; 14-2. Lower spherical surface; 14-3. Spherical sealing ring; 14-4. End face sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] The horizontal direction is the length of the vertical segment from the center point of the loop-shaped swing connector 6 to the first shaft hydraulic cylinder 5, and the vertical direction is the length of the vertical segment from the center point of the loop-shaped swing connector 6 to the second shaft hydraulic cylinder 9.

[0024] like Figures 1-5As shown, the present invention provides a universal swing extension and sealing device for a plasma torch, comprising a third-axis hydraulic cylinder 1, a plasma torch mounting plate 2, a third-axis hydraulic cylinder connecting seat 3, a first-axis swing mounting plate 4, a first-axis hydraulic cylinder 5, a loop-shaped swing connector 6, a first-axis hydraulic cylinder fixing component 7, a first-axis hydraulic cylinder connecting seat 8, a second-axis hydraulic cylinder 9, a second rotating shaft 10, a second-axis hydraulic cylinder connecting seat 11, a second-axis hydraulic cylinder fixing component 12, a first rotating shaft 13, a spherical seal 14, a first-axis swing mounting plate connecting seat 15, a loop-shaped second-axis swing connector 16, a first fisheye joint 17, and a second fisheye joint 18.

[0025] A spherical seal 14 passes through the hollow portion of the loop-shaped swing connector 6. The spherical seal 14 includes an upper spherical surface 14-1 and a lower spherical surface 14-2 that meet. The mating surfaces of the upper spherical surface 14-1 and the lower spherical surface 14-2 are spherical, and a spherical seal is provided at the mating surfaces. The upper spherical surface 14-1 and the loop-shaped swing connector 6 are detachably connected to the first axial swing mounting plate 4 located above it, and the lower spherical surface 14-2 is detachably connected to the device mounting plate 19 located below it. The interiors of the spherical seal 14 and the first axial swing mounting plate 4 have channels for the plasma torch to pass through. Under external force, the first axial swing mounting plate 4, the upper spherical surface 14-1 of the spherical seal 14, and the loop-shaped swing connector 6 can swing laterally and longitudinally relative to the lower spherical surface 14-2 of the spherical seal 14 to achieve universal swinging and sealing of the plasma torch.

[0026] The loop-shaped swing connector 6 is equipped with a first-axis hydraulic cylinder 5 at one end in the transverse direction, and the first-axis swing mounting plate 4 is equipped with a second-axis hydraulic cylinder 9 at one end in the longitudinal direction. The first-axis swing mounting plate 4 is equipped with a third-axis hydraulic cylinder 1 at both ends in the transverse direction. The first-axis hydraulic cylinder 5 drives the loop-shaped swing connector 6 and the first-axis swing mounting plate 4 and the upper spherical surface 14-1 mounted on it to swing longitudinally to realize the universal swing and sealing of the plasma torch. The second-axis hydraulic cylinder 9 drives the first-axis swing mounting plate 4 and the upper spherical surface 14-1 to swing laterally to realize the universal swing and sealing of the plasma torch.

[0027] The upper spherical surface 14-1 is positioned above the lower spherical surface 14-2. An upper flange is provided at the upper end of the upper spherical surface 14-1, and the upper flange is connected to the first shaft swing mounting plate 4 by screws. A lower flange is provided at the lower end of the lower spherical surface 14-2, and the lower flange is connected to the device mounting plate 19 by screws.

[0028] When the upper spherical surface 14-1 and the lower spherical surface 14-2 are concentric, the spherical seal 14 is a cylinder as a whole. The lower spherical surface 14-2 drives the upper spherical surface 14-1 to swing relative to each other, which in turn drives the plasma torch to swing.

[0029] An end face sealing ring 14-4 is provided between the upper spherical surface 14-1 and the first shaft swing mounting plate 4 for sealing, and an end face sealing ring 14-4 is provided between the lower spherical surface 14-2 and the device mounting plate 19 for sealing. The upper spherical surface 14-1 and the lower spherical surface 14-2 abut against each other through the spherical surface, and a spherical sealing ring 14-3 is provided between them for sealing.

[0030] Because the plasma torch can extend and retract, it requires sealing rings. The end face sealing ring 14-4 at the end face seal prevents external air from entering the furnace, while the spherical sealing ring 14-3 on the spherical seal prevents external air from entering the furnace from the spherical surface.

[0031] A first-axis hydraulic cylinder fixing component 7 is provided above the lateral side of the rotary swing connector 6. The connecting flange of the first-axis hydraulic cylinder 5 is connected to the rotary swing connector 6 through the first-axis hydraulic cylinder fixing component 7. The lower end of the first-axis hydraulic cylinder 5 is connected to the first-axis hydraulic cylinder connecting seat 8. A second-axis hydraulic cylinder fixing component 12 is provided on the longitudinal side of the first-axis swing mounting plate 4. The connecting flange of the second-axis hydraulic cylinder 9 is connected to the first-axis swing mounting plate 4 through the second-axis hydraulic cylinder fixing component 12. The lower end of the second-axis hydraulic cylinder 9 is connected to the second-axis hydraulic cylinder connecting seat 11. The plasma torch mounting plate 2 is located above the first-axis swing mounting plate 4. The plasma torch is installed in the middle of the plasma torch mounting plate 2. Third-axis hydraulic cylinder connecting seats 3 are respectively installed at both ends of the lateral side of the first-axis swing mounting plate 4. The lower end of the third-axis hydraulic cylinder 1 is connected to the third-axis hydraulic cylinder connecting seat 3. The connecting flanges of the two third-axis hydraulic cylinders 1 are respectively connected to both ends of the plasma torch mounting plate 2.

[0032] Driven by the second-axis hydraulic cylinder 9, the first-axis swing mounting plate 4, the upper spherical surface 14-1 installed on its lower part, the two third-axis hydraulic cylinders 1, the plasma torch, and the plasma torch mounting plate 2 swing laterally around the first rotating axis 13 and achieve sealing.

[0033] The third-axis hydraulic cylinder 1 is connected to the plasma torch mounting plate 2 and the third-axis hydraulic cylinder connecting seat 3 respectively, so as to realize the extension and retraction of the third-axis hydraulic cylinder 1.

[0034] Driven by the first shaft hydraulic cylinder 5, the upper part of the loop-shaped swing connector 6 and the plasma torch swing longitudinally around the second rotation 10 and achieve sealing.

[0035] The spiral swing connector 6 is a regular hexagonal ring, and the first rotating shaft 13 and the second rotating shaft 10 are arranged in a cross shape on the spiral swing connector 6.

[0036] The first fisheye connector 17 is installed in the transverse direction of the sway connector 6. The first sway connector 17 is connected to the first shaft sway mounting plate connector 15 by a thread above it. The first shaft sway mounting plate connector 15 is connected to the first shaft sway mounting plate 4 above it. The first sway connector 17 is connected to the first rotating shaft 13 below it.

[0037] The second fisheye connector 18 is installed in the longitudinal direction of the sway connector 6. The upper part of the second fisheye connector 18 is connected to the second rotating shaft 10, and the lower part of the second fisheye connector 18 is connected to the sway connector 16 of the sway connector 6 via a thread.

[0038] The second axis swing connector 16 of the spiral member is connected to the interface of the device mounting plate 19.

[0039] This device enables the plasma torch to swing, extend, and seal at any angle, allowing it to adapt to different working conditions.

Claims

1. A universal swing telescopic and sealing device for a plasma torch, characterized in that, The device includes a spherical seal and a loop-shaped swing connector. The spherical seal passes through the hollow portion of the loop-shaped swing connector. The spherical seal includes an upper spherical surface and a lower spherical surface that meet. The meeting surface of the upper and lower spherical surfaces is spherical, and a spherical seal is provided at the meeting surface. The upper spherical surface and the loop-shaped swing connector are detachably connected to a first axial swing mounting plate located above them. The lower spherical surface is detachably connected to a device mounting plate located below it. The spherical seal and the first axial swing mounting plate have channels for the plasma torch to pass through. Under external force, the first axial swing mounting plate, the upper spherical surface of the spherical seal, and the loop-shaped swing connector can swing laterally and longitudinally relative to the lower spherical surface of the spherical seal to achieve universal swinging and sealing of the plasma torch.

2. The plasma torch universal swing telescopic and sealing device according to claim 1, characterized in that, The spiral swing connector is provided with a first shaft hydraulic cylinder at one end in the transverse direction, the first shaft swing mounting plate is provided with a second shaft hydraulic cylinder at one end in the longitudinal direction, and the first shaft swing mounting plate is provided with a third shaft hydraulic cylinder at both ends in the transverse direction. The first shaft hydraulic cylinder drives the spiral swing connector and the first shaft swing mounting plate mounted on it to swing longitudinally, and the second shaft hydraulic cylinder drives the first shaft swing mounting plate to swing laterally.

3. The plasma torch universal swing telescopic and sealing device according to claim 1, characterized in that, An end face sealing ring is provided between the upper spherical surface and the first shaft swing mounting plate, an end face sealing ring is provided between the lower spherical surface and the device mounting plate, and a spherical sealing ring is provided between the upper spherical surface and the lower spherical surface.

4. The plasma torch universal swing telescopic and sealing device according to claim 2, characterized in that, A first shaft hydraulic cylinder fixing component is provided on the upper lateral side of the spiral swing connector. The connecting flange of the first shaft hydraulic cylinder is connected to the spiral swing connector through the first shaft hydraulic cylinder fixing component. The lower end of the first shaft hydraulic cylinder is connected to a first shaft hydraulic cylinder connecting seat.

5. The plasma torch universal swing telescopic and sealing device according to claim 2, characterized in that, A second shaft hydraulic cylinder fixing component is provided on the longitudinal direction of the first shaft swing mounting plate. The connecting flange of the second shaft hydraulic cylinder is connected to the first shaft swing mounting plate through the second shaft hydraulic cylinder fixing component. The lower end of the second shaft hydraulic cylinder is connected to a second shaft hydraulic cylinder connecting seat.

6. The plasma torch universal swing telescopic and sealing device according to claim 2, characterized in that, It also includes a plasma torch mounting plate, which is disposed above the first axis swing mounting plate, and the plasma torch is mounted in the middle of the plasma torch mounting plate.

7. The plasma torch universal swing telescopic and sealing device according to claim 6, characterized in that, The first axis swing mounting plate has a third axis hydraulic cylinder connecting seat installed at both ends of its horizontal direction. The lower end of the third axis hydraulic cylinder is connected to the third axis hydraulic cylinder connecting seat, and the connecting flanges of the two third axis hydraulic cylinders are respectively connected to both ends of the plasma torch mounting plate.

8. The plasma torch universal swing telescopic and sealing device according to claim 1, characterized in that, The first fisheye connector is installed in the transverse direction of the spiral swing connector. The first swivel mounting plate connector is detachably connected to the top of the first swivel connector. The first swivel mounting plate is connected to the top of the first swivel mounting plate connector. The first rotating shaft is connected to the bottom of the first swivel connector.

9. The plasma torch universal swing telescopic and sealing device according to claim 1, characterized in that, A second fisheye connector is installed longitudinally inside the spiral swing connector. A second rotating shaft is connected above the second fisheye connector, and a spiral swing connector seat is detachably connected below the second fisheye connector.

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