CN212761025U - Rotary joint for fan-shaped section roller of bloom of continuous casting machine - Google Patents
Rotary joint for fan-shaped section roller of bloom of continuous casting machine Download PDFInfo
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- CN212761025U CN212761025U CN202021451062.1U CN202021451062U CN212761025U CN 212761025 U CN212761025 U CN 212761025U CN 202021451062 U CN202021451062 U CN 202021451062U CN 212761025 U CN212761025 U CN 212761025U
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- hollow shaft
- sealing ring
- bloom
- rotary joint
- roller
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Abstract
The utility model discloses a fan-shaped section roller rotary joint of conticaster bloom, which comprises an outer shell, the hollow shaft is installed to shell one end, be provided with end face seal spare between shell and the hollow shaft, end face seal spare is including inlaying static sealing ring together and moving the sealing ring, the uide bushing has been cup jointed on the hollow shaft other end, the uide bushing passes through the elasticity cylindric lock and is fixed with the hollow shaft. The utility model discloses the leakproofness is good, has avoided the irregular emergence of revealing of rotary joint, makes the production process more smooth and easy, has reduced rotary joint's installation accuracy requirement, has avoided the accumulative error, and it is convenient to change, has improved the life of fan-shaped section, has made things convenient for the assembly and the adjustment of roller, can not damage rotary joint because of the assembly of bearing frame with the roller, has improved rotary joint life.
Description
Technical Field
The utility model relates to a fan-shaped section roller connects, concretely relates to fan-shaped section roller rotary joint of conticaster bloom.
Background
The sector roller of bloom is the core equipment of conticaster, mainly used for the continuous casting billet to be drawn, straightened, born, guided, the whole sector is in one, two cold chamber seal spaces, one four machines four flows bloom conticaster has three section 300 a plurality of supporting rollers to constitute, has 600 a plurality of rotary joints to use on line. Because the segment roller runs at high temperature for a long time, the roller and the internal supporting bearing can be thermally deformed and damaged or the surface of the roller is broken due to insufficient cooling, the running stability and the dimensional precision of the segment roller have decisive influence on the quality of a casting blank, and the segment roller needs to be cooled from inside to outside by adopting circulating cooling water through rotary joints at two ends of the roller. The rotary joint is arranged in a bearing seat at the end part of the roller through a connecting bolt, the other end of the rotary joint is inserted into a guide sleeve of the roller through a hollow shaft, and circulating cooling water passes through the water inlet and the water outlet of the rotary joint at the two ends of the roller to finish the cooling treatment of the roller. At present, the fan-shaped section rotary joint of a continuous casting machine in a steel plant is mainly a one-way circulation type rotary joint and a two-way circulation type rotary joint, and the technical parameter requirements are as follows according to the design and the use working condition: the working speed is 10r/min, the working medium is cooling water, the working pressure is 1.0Mpa, and the working temperature is 121 ℃. However, the existing rotary joints have the defects of short service life, easy water leakage, insufficient cooling efficiency of the roller, frequent occurrence of faults such as locking of a roller bearing, cracking of a roller surface and the like, and the following problems: the segment roller and the bearing are not cooled to the position, so that thermal deformation damage or roller surface cracks occur; a large amount of equipment water is lost and water is not replenished, and the continuous casting machine is forced to stop; for example, the leakage water is directly sprayed on the surface of the blank, which causes quality problems such as blank deviation or blank surface quality cracking.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a fan-shaped section roller rotary joint of conticaster bloom solves to leak easily and leads to roller cooling efficiency not enough, causes roller bearing locking, roll surface fracture, influences life's problem.
The technical scheme is as follows: sector section roller rotary joint of conticaster bloom, which comprises an outer shell, the hollow shaft is installed to shell one end, be provided with end face seal spare between shell and the hollow shaft, end face seal spare is including inlaying static sealing ring together and moving the sealing ring, the uide bushing has been cup jointed on the hollow shaft other end, the uide bushing passes through the elasticity cylindric lock and is fixed with the hollow shaft.
In order to drive the hollow shaft and the guide sleeve to rotate together, the upper side and the lower side of the static sealing ring are fixedly connected with the shell through elastic cylindrical pins and are sealed with the shell through sealing rings.
In order to apply axial pre-pressure and complete compensation required by normal work of the mechanical seal, the static seal ring is provided with a wave spring.
The movable sealing ring is sleeved on the hollow shaft.
In order to support and adjust the coaxiality of the hollow shaft, a brass antifriction pad is arranged between the hollow shaft and the shell.
In order to enhance the sealing property, a sealing gasket and a sealing ring are arranged between the hollow shaft and the guide sleeve.
The inner and outer sealing rings on the guide sleeve are conveniently and fully cooled, and the guide sleeve is of an inner hole inner cone type structure.
In order to improve the wear resistance and the service life of the sealing element, the static sealing ring and the dynamic sealing ring are made of ceramic or tungsten carbide.
Has the advantages that: the utility model discloses the leakproofness is good, has avoided the irregular emergence of revealing of rotary joint, makes the production process more smooth and easy, has reduced rotary joint's installation accuracy requirement, has avoided the accumulative error, and it is convenient to change, has improved the life of fan-shaped section, has made things convenient for the assembly and the adjustment of roller, can not damage rotary joint because of the assembly of bearing frame with the roller, has improved rotary joint life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in figure 1, the utility model discloses a sector roller rotary joint of a bloom caster, which comprises a shell 3, the shell 3 is installed in a sector bearing seat and fixed by a hexagon bolt 5, a combined gasket 6 is arranged between the hexagon bolt 5 and the shell, the outer diameter of the shell is hermetically assembled with an inner framework oil seal of the bearing seat, cooling water circulation inlet and outlet are completed through a water inlet, a hollow 2 is installed at one end of the shell 3, a brass antifriction pad 8 is arranged between the hollow shaft 2 and the shell 3, the brass antifriction pad 8 is fixed by an elastic retainer ring 14 through a hole, an end face sealing element is arranged between the shell 3 and the hollow shaft 2, the end face sealing element comprises a static sealing ring 4 and a dynamic sealing ring which are embedded together, the upper side and the lower side of the static sealing ring 4 are fixedly connected with the shell 3 through a second elastic cylindrical pin 7 and are sealed with the shell 3, the axial pre-pressure is applied to complete the compensation required by the normal work of the mechanical seal, the movable seal ring is sleeved on the hollow shaft, the static seal ring 4 and the movable seal ring are made of ceramics or tungsten carbide, the other end of the hollow shaft 2 is sleeved with the guide sleeve 1, the guide sleeve 1 is fixed with the hollow shaft 2 through the first elastic cylindrical pin 15, the sealing gasket 9 and the sealing ring 10 are arranged between the hollow shaft 2 and the guide sleeve 1, the outer diameter of the hollow shaft 2 is matched with the guide sleeve 1 in a sealing way and rotates along with the guide sleeve 1, the inner hole can be communicated with a medium, the guide sleeve 1 is of an inner hole cone type structure, so that the inner and outer type sealing rings on the guide sleeve 1 are fully cooled, the wave spring adopted in the utility model works in a sealing environment, is not contacted with weakly acidic cooling water, the formation of corrosion is avoided, the end face seal can, the clearance fit between the guide sleeve and the hollow shaft and between the antifriction pad and the hollow shaft is increased, the assembly precision is reduced, the eccentric leakage of the rotary joint is avoided, the end face sealing material is improved from the past graphite and silicon carbide into ceramic, the wear resistance of the sealing material is improved, and the service life of the sealing material is prolonged. The shape structure of the guide sleeve is changed from the original inner hole straight-through type into the inner hole inner cone type, so that the inner O-shaped sealing ring and the outer O-shaped sealing ring on the guide sleeve are fully cooled, all the sealing rings are made of perfluoro rubber, the heat resistance and the wear resistance of the sealing element are greatly improved, and the wear-resistant material is brass, so that the wear resistance of the supporting material is improved and the service life of the supporting material is prolonged.
The rotary joint is characterized by that it utilizes the pressure of elastic element, such as wave spring and sealing medium to produce proper pressing force on the contact surfaces (spherical surface and plane surface) of rotating dynamic sealing ring and static sealing ring to make these two contact surfaces tightly contact, and between the contact surfaces a layer of very thin liquid film is maintained so as to attain the goal of sealing, and said layer of liquid film has the hydrodynamic pressure and static pressure, and can be used for lubricating and balancing pressure.
When the utility model is used, the end part of the roller is connected with the bearing seat through the bearing, the bearing seat is fixedly arranged at the end part of the roller through the positioning straight port and the external screw, the guide sleeve is in sealing assembly with the inner hole of the roller, the shell is in sealing assembly with the inner hole of the bearing seat, an O-shaped sealing ring and a skeleton oil seal are arranged between the shell and the bearing seat, the guide sleeve, the roller and the hollow shaft are provided with the O-shaped sealing ring, when the left and right rotating joints, the inlet pipe and the outlet pipe are fixed, the circulating cooling water flows in from the rotating joint at one end under the action of system pressure, the rotating joint at the other end flows out, the roller can rotate independently under the action of a casting blank, the guide sleeve assembled in the roller can rotate along with the rotating, the elastic cylindrical pin on the guide sleeve can stir the hollow shaft to rotate, meanwhile, the roller has the advantages that the stability and the direction consistency of water flow are guaranteed, leakage does not occur, the temperature of the roller can be greatly reduced due to cooling water, and the service life of the roller is prolonged.
Claims (8)
1. The utility model provides a fan-shaped section roller rotary joint of conticaster bloom, a serial communication port, includes shell (3), hollow shaft (2) are installed to shell (3) one end, be provided with end face seal between shell (3) and hollow shaft (2), end face seal is including inlaying static sealing ring (4) together and moving the sealing ring, uide bushing (1) has been cup jointed on hollow shaft (2) the other end, uide bushing (1) is fixed with hollow shaft (2) through first elasticity cylindric lock (15).
2. Continuous caster bloom segment roll swivel joint according to claim 1, characterized in that the static sealing ring (4) is fixedly connected to the housing (3) on both upper and lower sides by a second elastic cylindrical pin (7) and sealed to the housing (3) by a sealing ring (10).
3. Continuous caster bloom segment roll swivel joint according to claim 1, characterized in that the static sealing ring (4) is provided with a wave spring (16).
4. Continuous caster bloom segment roll swivel joint according to claim 1, characterized in that the dynamic sealing ring is sleeved on the hollow shaft (2).
5. Continuous caster bloom sector roll swivel joint according to claim 1, characterized in that a brass wear reducing pad (8) is provided between the hollow shaft (2) and the housing (3).
6. Continuous casting machine bloom sector roll swivel joint according to claim 1, characterized in that a sealing gasket (9) and a sealing ring (10) are provided between the hollow shaft (2) and the guide sleeve (1).
7. Continuous caster bloom segment roll swivel joint according to claim 1, characterized in that the guide sleeve (1) is of internally tapered configuration.
8. Continuous caster bloom segment roll swivel joint according to claim 1, characterized in that the static seal ring (4) and the dynamic seal ring are made of ceramic or tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021451062.1U CN212761025U (en) | 2020-07-22 | 2020-07-22 | Rotary joint for fan-shaped section roller of bloom of continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021451062.1U CN212761025U (en) | 2020-07-22 | 2020-07-22 | Rotary joint for fan-shaped section roller of bloom of continuous casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212761025U true CN212761025U (en) | 2021-03-23 |
Family
ID=75027209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021451062.1U Active CN212761025U (en) | 2020-07-22 | 2020-07-22 | Rotary joint for fan-shaped section roller of bloom of continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212761025U (en) |
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2020
- 2020-07-22 CN CN202021451062.1U patent/CN212761025U/en active Active
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