Rotary joint for cooling steel pipe penetrating ejector rod

Abstract

The utility model discloses a rotating joint for cooling a steel pipe penetrating ejector rod, which comprises a machine body, a first shell and a second shell are arranged at the top of the machine body, a rotating flange is fixedly arranged in the second shell, an ejector rod assembly is fixedly arranged in the rotating flange, and a cooling assembly is arranged in the first shell. The bottom of each side of the first outer shell is fixedly provided with a locking shell, a connecting assembly is fixedly installed between the first outer shell and the second outer shell, the connecting assembly is sleeved with a sealing and fixing assembly, and the two ends of the top of the machine body are fixedly provided with locking assemblies. According to the rotary joint, a small gap possibly existing in the connecting position of the rotary joint can be further filled, cooling medium leakage is prevented, the integrity and stability of a cooling system are ensured, disassembly and assembly are convenient through the locking assembly, maintenance personnel can more rapidly disassemble the rotary joint from equipment, and replacement or maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe threading technology, specifically a rotary joint for cooling a steel pipe threading top rod. Background Technology

[0002] The rotary joint for cooling the tube piercing mandrel in seamless steel pipe rolling mill is a key component used to realize the transmission of cooling medium for the tube piercing mandrel. It provides cooling for the tube piercing mandrel, thereby ensuring that the tube piercing mandrel can work normally in high-temperature environment, maintain its mechanical properties and dimensional accuracy, and guarantee the rolling quality of seamless steel pipe.

[0003] However, existing rotary joints for cooling steel pipes and tube rods are difficult to disassemble and reassemble when they need to be repaired after long-term use, which can lead to longer maintenance time and affect use. In addition, existing rotary joints usually only rely on sealing rings for sealing, which can easily lead to leakage after long-term use.

[0004] Therefore, a rotary joint for cooling steel pipe push rods is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary joint for cooling steel pipe through-tube jacks, in order to solve the problems mentioned in the background art. Existing rotary joints for cooling steel pipe through-tube jacks are difficult to disassemble and assemble when they need to be repaired after long-term use, which can easily lead to longer maintenance time and affect use. In addition, existing rotary joints usually only rely on sealing rings for sealing, which can easily lead to leakage after long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary joint for cooling a steel pipe through-tube push rod, comprising a body, a first outer shell and a second outer shell mounted on the top of the body, a rotating flange fixedly mounted inside the second outer shell, a push rod assembly for through-tube fixedly mounted inside the rotating flange, a cooling assembly mounted inside the first outer shell, locking shells fixedly mounted on the bottom of both sides of the first outer shell, a connecting assembly fixedly mounted between the first outer shell and the second outer shell, a sealing and fixing assembly sleeved on the outside of the connecting assembly, and locking assemblies fixedly mounted at both ends of the top of the body.

[0007] Preferably, the push rod assembly includes a perforated push rod, which is fixedly installed inside the rotating flange. One end of the perforated push rod is fixedly installed with a top head, and the other end of the perforated push rod has multiple water outlet holes. A cooling pipe is rotatably installed inside the perforated push rod. The top of the cooling pipe is connected to multiple nozzles. One end of the cooling pipe passes through one end of the perforated push rod, and one end of the cooling pipe is fixedly connected to a connector.

[0008] Preferably, the cooling assembly includes a water inlet and a water outlet. The water inlet is fixedly connected to the top of the first housing and the back of the first housing. One end of both the water inlet and the water outlet extends into the interior of the first housing. One end of the water inlet is fixedly connected to a water inlet pipe, and one end of the water inlet pipe is connected to one end of a connector.

[0009] Preferably, the connecting assembly includes two connecting blocks, which are respectively fixedly installed on the inner sides of the first housing and the second housing, the two connecting blocks are in contact with each other, and a sealing gasket is installed between the two connecting blocks.

[0010] Preferably, the sealing and fixing assembly includes a lower housing, one end of which is rotatably connected to an upper housing, and the other end of the lower housing is rotatably mounted with a fixing screw. A tightening plate is threaded onto the outer side of the fixing screw, and the fixing screw is movably connected to one end of the upper housing.

[0011] Preferably, the locking assembly includes two mounting brackets, which are respectively fixedly installed at both ends of the top of the machine body. A locking block is rotatably installed in the middle of each mounting bracket. One end of the locking block is threadedly connected to a pressing screw, and one end of the pressing screw is fixedly installed with a handle. The two pressing screws are respectively in contact with two locking shells.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By using the sealing and fixing components, the tiny gaps that may exist at the joint of the rotary joint can be further filled, preventing the leakage of cooling medium, ensuring the integrity and stability of the cooling system, maintaining a good sealing condition, avoiding the impact of leakage on the cooling effect, and ensuring the normal cooling of the seamless steel pipe through-tube top rod;

[0014] By using locking components, easy disassembly and installation allows maintenance personnel to quickly remove the rotary joint from the equipment, facilitating the replacement or repair of vulnerable components such as internal seals and bearings. This shortens maintenance time, reduces equipment downtime, and improves equipment availability. At the same time, rapid maintenance enables the equipment to return to normal operation more quickly, reducing production losses caused by equipment downtime and indirectly lowering maintenance costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the rotary joint of this utility model;

[0016] Figure 2 This is a diagram of the sealing and fixing assembly of the rotary joint of this utility model;

[0017] Figure 3 This is a diagram of the connection components of the rotary joint of this utility model;

[0018] Figure 4 This is a diagram of the locking component of the rotary joint of this utility model;

[0019] Figure 5 This is a cross-sectional view of the rotary joint of this utility model;

[0020] Figure 6 The rotary joint of this utility model Figure 5 Enlarged view of a portion of region A in the middle.

[0021] In the diagram: 1. Body; 2. First outer shell; 3. Second outer shell; 4. Rotary flange; 5. Perforated top rod; 6. Top head; 7. Tightening plate; 8. Cooling pipe; 9. Nozzle; 10. Connector; 11. Water outlet; 12. Connecting block; 13. Sealing gasket; 14. Water inlet; 15. Water outlet; 16. Water inlet pipe; 17. Mounting bracket; 18. Locking block; 19. Extrusion screw; 20. Handle; 21. Locking shell; 22. Upper shell; 23. Lower shell; 24. Fixing screw. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1-6 This utility model provides a rotary joint for cooling a steel pipe through-tube push rod, including a body 1, a first outer shell 2 and a second outer shell 3 mounted on the top of the body 1, a rotary flange 4 fixedly mounted inside the second outer shell 3, a push rod assembly for through-tube fixedly mounted inside the rotary flange 4, a cooling assembly mounted inside the first outer shell 2, locking shells 21 fixedly mounted on the bottom of both sides of the first outer shell 2, a connecting assembly fixedly mounted between the first outer shell 2 and the second outer shell 3, a sealing and fixing assembly sleeved on the outside of the connecting assembly, and locking assemblies fixedly mounted at both ends of the top of the body 1.

[0024] Furthermore, the push rod assembly includes a perforated push rod 5, which is fixedly installed inside the rotating flange 4. A top head 6 is fixedly installed at one end of the perforated push rod 5, and multiple water outlet holes 11 are opened at the other end of the perforated push rod 5. A cooling pipe 8 is rotatably installed inside the perforated push rod 5, and multiple nozzles 9 are connected to the top of the cooling pipe 8. One end of the cooling pipe 8 passes through one end of the perforated push rod 5, and a connector 10 is fixedly connected to one end of the cooling pipe 8. When the cooling medium enters the interior of the cooling pipe 8, it is continuously sprayed upwards onto the inner wall of the rotating perforated push rod 5 through the multiple nozzles 9 to cool it down. The cooled medium will become hot and remain inside the perforated push rod 5. After it reaches a certain height, it will flow out through the water outlet hole 11 at one end of the perforated push rod 5. The flowing-out cooling medium enters the interior of the first outer shell 2 through the connecting block 12 and is discharged through the water outlet 15 connected to the first outer shell 2.

[0025] Furthermore, the cooling assembly includes an inlet 14 and an outlet 15. The inlet 14 is fixedly connected to the top of the first housing 2 and the back of the first housing 2. One end of both the inlet 14 and the outlet 15 extends into the interior of the first housing 2. One end of the inlet 14 is fixedly connected to an inlet pipe 16. One end of the inlet pipe 16 is connected to one end of the connector 10. During the pipe-piercing operation, the cooling medium, such as cooling water, enters the interior of the first housing 2 through the inlet 14, flows into the interior of the inlet pipe 16 through the inlet 14, and then flows into the interior of the cooling pipe 8 through the connector 10 to cool the rotating perforated top rod 5.

[0026] Furthermore, the connecting assembly includes two connecting blocks 12, which are respectively fixedly installed on the inner sides of the first housing 2 and the second housing 3. The two connecting blocks 12 are in contact with each other, and a sealing gasket 13 is installed between the two connecting blocks 12. When connecting the first housing 2 and the second housing 3, the sealing gasket 13 is installed between the two connecting blocks 12 that connect the first housing 2 and the second housing 3, and then the connecting blocks 12 are pressed against the sealing gasket 13.

[0027] Furthermore, the sealing and fixing assembly includes a lower housing 23, one end of which is rotatably connected to an upper housing 22, and the other end of which is rotatably mounted with a fixing screw 24. A tightening plate 7 is threadedly connected to the outer side of the fixing screw 24. The fixing screw 24 is movably connected to one end of the upper housing 22. After the sealing gasket 13 is installed, the lower housing 23 and the upper housing 22 are fitted over the two connecting blocks 12. Then, the fixing screw 24 is rotated to one end of the upper housing 22. Then, the tightening plate 7 is rotated, and through its cooperation with the fixing screw 24, the lower housing 23 and the upper housing 22 tighten the two connecting blocks 12, thereby achieving the effect of strengthening the seal.

[0028] Furthermore, the locking assembly includes two mounting brackets 17, which are respectively fixedly installed at both ends of the top of the body 1. A locking block 18 is rotatably mounted in the middle of each mounting bracket 17. One end of each locking block 18 is threadedly connected to a pressing screw 19, and one end of the pressing screw 19 is fixedly mounted with a handle 20. The two pressing screws 19 are respectively in contact with two locking shells 21. When installing the first shell 2, rotating the two handles 20 causes the pressing screw 19 to rotate inside the corresponding locking block 18. When the pressing screw 19 is in motion, it interacts with the locking block... The 18-threaded connection will drive the transmission, and the two extrusion screws 19 will extrude the locking shells 21 on both sides of the first outer shell 2. Because the extrusion screws 19 are not strong enough to push the locking shells 21 and the first outer shell 2 when they are extruded, the locking blocks 18 will be rotated along the two mounting brackets 17 to reach the inside of the locking shells 21, so that the locking blocks 18 lock the locking shells 21, thereby achieving the purpose of fixing the first outer shell 2. When the rotary joint needs maintenance, the extrusion screws 19 are rotated in the opposite direction to unlock the locking blocks 18, and then the first outer shell 2 is disassembled.

[0029] In this embodiment, during installation of the first housing 2, rotating the two handles 20 causes the pressing screws 19 to rotate inside the corresponding locking blocks 18. Because the pressing screws 19 are threadedly connected to the locking blocks 18, they engage in transmission, causing the two pressing screws 19 to press against the locking shells 21 on both sides of the first housing 2. Since the pressing screws 19 are not sufficiently compressed to push the locking shells 21 away from the first housing 2, they cause the locking blocks 18 to rotate along the two mounting brackets 17 and reach the interior of the locking shells 21. This locks the locking block 18 onto the locking shell 21, thereby fixing the first outer shell 2. When connecting the first outer shell 2 and the second outer shell 3, a sealing gasket 13 is installed between the two connecting blocks 12 that connect the first outer shell 2 and the second outer shell 3. The connecting blocks 12 are then pressed against the sealing gasket 13. After the sealing gasket 13 is installed, the lower shell 23 and the upper shell 22 are fitted over the two connecting blocks 12. The fixing screw 24 is then rotated to one end of the upper shell 22. Finally, the tightening plate 7 is rotated... Through its cooperation with the fixing screw 24, the lower housing 23 and the upper housing 22 tighten the two connecting blocks 12, thereby achieving a reinforced sealing effect. During the pipe-piercing operation, the cooling medium, such as cooling water, enters the interior of the first housing 2 through the inlet 14, flows into the interior of the inlet pipe 16 through the inlet 14, and then flows into the interior of the cooling pipe 8 through the connector 10 to cool the rotating perforating rod 5. After the cooling medium enters the interior of the cooling pipe 8, it sprays upwards through multiple nozzles 9 onto the rotating perforating rod 5. The wall is continuously sprayed to cool it down. The cooled medium will become hot and remain inside the perforated top rod 5. After it reaches a certain height, it will flow out through the water outlet 11 at one end of the perforated top rod 5. The flowing-out cooled medium enters the interior of the first housing 2 through the connecting block 12 and is discharged through the water outlet 15 connected to the first housing 2. When the rotary joint needs maintenance, the screw 19 is rotated in the opposite direction to unlock the locking block 18, and then the tightening plate 7 is rotated in the opposite direction to unlock the lower housing 23 and the upper housing 22, so that the first housing 2 can be disassembled.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary joint for cooling a steel pipe through-tube top rod, comprising a body (1), characterized in that: The top of the body (1) is equipped with a first outer shell (2) and a second outer shell (3). A rotating flange (4) is fixedly installed inside the second outer shell (3). A top rod assembly for pipe insertion is fixedly installed inside the rotating flange (4). A cooling assembly is installed inside the first outer shell (2). Locking shells (21) are fixedly installed at the bottom of both sides of the first outer shell (2). A connecting assembly is fixedly installed between the first outer shell (2) and the second outer shell (3). A sealing and fixing assembly is sleeved on the outside of the connecting assembly. Locking assemblies are fixedly installed at both ends of the top of the body (1).

2. The rotary joint for cooling a steel pipe through-tube top rod according to claim 1, characterized in that: The top rod assembly includes a perforated top rod (5), which is fixedly installed inside the rotating flange (4). One end of the perforated top rod (5) is fixedly installed with a top head (6), and the other end of the perforated top rod (5) is provided with multiple water outlet holes (11). A cooling pipe (8) is rotatably installed inside the perforated top rod (5). The top of the cooling pipe (8) is connected to multiple nozzles (9). One end of the cooling pipe (8) passes through one end of the perforated top rod (5), and one end of the cooling pipe (8) is fixedly connected to a connector (10).

3. A rotary joint for cooling a steel pipe through-tube top rod according to claim 2, characterized in that: The cooling assembly includes an inlet (14) and an outlet (15). The inlet (14) is fixedly connected to the top of the first housing (2) and the back of the first housing (2). One end of both the inlet (14) and the outlet (15) extends into the interior of the first housing (2). One end of the inlet (14) is fixedly connected to an inlet pipe (16), and one end of the inlet pipe (16) is connected to one end of a connector (10).

4. A rotary joint for cooling a steel pipe through-tube top rod according to claim 1, characterized in that: The connecting assembly includes two connecting blocks (12), which are fixedly installed on the inner sides of the first outer shell (2) and the second outer shell (3), respectively. The two connecting blocks (12) are in contact with each other, and a sealing gasket (13) is installed between the two connecting blocks (12).

5. A rotary joint for cooling a steel pipe through-tube mandrel according to claim 1, characterized in that: The sealing and fixing assembly includes a lower housing (23), one end of which is rotatably connected to an upper housing (22), and the other end of which is rotatably mounted with a fixing screw (24). A tightening plate (7) is threadedly connected to the outer side of the fixing screw (24), and the fixing screw (24) is movably connected to one end of the upper housing (22).

6. A rotary joint for cooling a steel pipe through-tube mandrel according to claim 1, characterized in that: The locking assembly includes two mounting brackets (17), which are fixedly installed at both ends of the top of the body (1). A locking block (18) is rotatably installed in the middle of each mounting bracket (17). One end of the locking block (18) is threadedly connected to a pressing screw (19), and one end of the pressing screw (19) is fixedly installed with a handle (20). The two pressing screws (19) are respectively in contact with two locking shells (21).

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