CN215634468U - Self-lubricating rotary joint - Google Patents
Self-lubricating rotary joint Download PDFInfo
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- CN215634468U CN215634468U CN202121637471.5U CN202121637471U CN215634468U CN 215634468 U CN215634468 U CN 215634468U CN 202121637471 U CN202121637471 U CN 202121637471U CN 215634468 U CN215634468 U CN 215634468U
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Abstract
The utility model relates to a self-lubricating rotary joint, which comprises a rotary joint outer sleeve, a liquid through inner sleeve rotationally connected in the rotary joint outer sleeve, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are detachably connected at two ends of the rotary joint outer sleeve and the liquid through inner sleeve, a containing groove is formed in the inner side wall of the rotary joint outer sleeve, a first cylindrical roller is arranged in the containing groove, and the outer wall of the liquid through inner sleeve is rotationally connected with the rotary joint outer sleeve through the first cylindrical roller.
Description
Technical Field
The utility model relates to the technical field of fluid loading and unloading equipment, in particular to a self-lubricating rotary joint.
Background
In order to meet the requirements of advanced technology, economy, reasonability, safety, applicability, convenience in construction, reliable quality and the like of fluid at the temperature of minus 196-250 ℃ in storage and transportation engineering, various large enterprises research a loading and unloading mode with higher danger coefficient by using a liquid loading and unloading arm to replace a stainless steel hose and the like, and in recent years, the liquid loading and unloading arm is widely distributed in the market, and the loading and unloading of various petrochemical engineering liquid media by using an automobile tank car, a train tank car or a tank ship are realized through the liquid loading and unloading arm. The liquid loading and unloading arm is divided into a land loading and unloading arm and a marine liquid loading and unloading arm, and the main structure of the arm comprises a rotary joint, an inner arm, an outer arm, a balancer, a balancing weight and the like, wherein the most important component is the rotary joint which comprises a liquid through pipe, a rotating part, a sealing part, a fastening part and the like, and the arm is mainly used for connecting different components of the liquid loading and unloading arm to rotate relatively and bear a certain load.
At present, the rotary joint has a nitrogen accompanying blowing function generally in order to replace air with certain humidity in a rotary joint roller path, and prevent the phenomenon that the interior of the roller path is frozen and blocked due to low temperature of LNG in the unloading process. The rotary joint in the prior art has the following defects: firstly, the rotary joint with the nitrogen blowing function has potential safety hazard, if the content of nitrogen in air in an operation space is too high, oxygen inhaled by field operators is reduced, and the patients with mild symptoms such as chest distress, short breath, fatigue, weakness and severe symptoms such as dyspnea and coma and stop heartbeat to cause suffocation death; secondly, the rotating part and the liquid passing pipe are fastened and connected through the balls in the roller paths and the two parts are guaranteed to rotate, the balls are in point contact with the outer sleeve, the abrasion degree of the mode is relatively large, the balls can be meshed with each other after a long time, the rotating joint is not favorable to rotate, and the service life of parts and the product quality are greatly influenced; third, because the sealing washer has wearing and tearing at the swivel joint rotation in-process, later stage change need with the swivel joint follow unloading arm pipeline cut down to change, the later maintenance of being not convenient for.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects in the prior art and provide a self-lubricating rotary joint convenient to maintain.
The utility model is realized by the following technical scheme:
the utility model provides a self-lubricating swivel, its characterized in that includes the swivel overcoat, rotates the liquid endotheca that leads to of connecting in the swivel overcoat, can dismantle front end housing and the rear end cap of connecting in swivel overcoat and leading to liquid endotheca both ends, the storage tank has been seted up to swivel overcoat inside wall, be provided with first cylindrical roller in the storage tank, it is connected with the swivel overcoat rotation through first cylindrical roller to lead to liquid endotheca outer wall.
According to the technical scheme, preferably, the rotary joint outer sleeve is tightly connected with the front end cover, and a tetrafluoro gasket is arranged between the rotary joint outer sleeve and the front end cover.
According to the technical scheme, preferably, one side of the liquid-passing inner sleeve is fixedly connected with an inner sleeve baffle, and the inner sleeve baffle is rotatably connected with the front end cover through a second cylindrical roller.
According to the technical scheme, preferably, the rear end cover is tightly connected with the liquid passing inner sleeve, and a dynamic flooding plug seal is arranged between the rear end cover and the outer sleeve of the rotary joint.
According to the technical scheme, preferably, a static flooding plug seal is arranged between the rear end cover and the liquid passing inner sleeve.
According to the above technical solution, preferably, the static flooding plug seal is provided with 2 groups.
According to the above technical scheme, preferably, the containing groove is circumferentially arranged on the inner wall of the outer sleeve of the rotary joint.
According to the above technical scheme, preferably, the storage tank is provided with 2.
The utility model has the beneficial effects that:
the utility model has small and light structure and scientific and reasonable design, changes the original ball into the roller, changes point contact into surface contact, increases the contact area, avoids the phenomenon of occlusion and clamping between rolling parts, has better and smooth rotation, cancels the function of nitrogen gas blowing, and in addition, the first cylindrical roller is positioned outside the liquid-passing inner sleeve, is convenient to disassemble the liquid-passing inner sleeve and replace the sealing ring inside the liquid-passing inner sleeve, and is convenient and rapid to maintain on site.
Drawings
Fig. 1 is a front view of a rotary joint in the prior art.
Fig. 2 is a front view structural section of the present invention.
In the figure: 1. a front end cover; 2. the rotary joint is sleeved; 3. dynamic flooding plugging; 4. a rear end cap; 5. static flooding plug sealing; 6. filling a liquid inner sleeve; 7. a first cylindrical roller; 8. a second cylindrical roller; 9. the baffle is arranged in the inner sleeve.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in the figure, the liquid-permeable rotary joint comprises a rotary joint outer sleeve 2, a liquid-permeable inner sleeve 6 rotatably connected in the rotary joint outer sleeve 2, a front end cover 1 detachably connected at two ends of the rotary joint outer sleeve 2 and the liquid-permeable inner sleeve 6, and a rear end cover 4, wherein the inner side wall of the rotary joint outer sleeve 2 is provided with 2 accommodating grooves, the circumference of the accommodating grooves is arranged on the inner wall of the rotary joint outer sleeve 2, a first cylindrical roller 7 is arranged in each accommodating groove, the specification of the first cylindrical roller 7 is 5 x 10mm, and the outer wall of the liquid-permeable inner sleeve 6 is rotatably connected with the rotary joint outer sleeve 2 through the first cylindrical roller 7. The utility model has small and light structure and scientific and reasonable design, changes the original ball into the roller, changes point contact into surface contact, increases the contact area, avoids the phenomenon of occlusion and clamping between rolling parts, has better and smooth rotation, cancels the function of nitrogen gas blowing, in addition, the first cylindrical roller 7 is positioned outside the liquid-passing inner sleeve 6, is convenient for disassembling the liquid-passing inner sleeve 6 and replacing the sealing ring inside the liquid-passing inner sleeve, and has convenient and rapid field maintenance.
According to the above embodiment, preferably, the swivel outer casing 2 is tightly connected with the front end cover 1 through screws, and a tetrafluoro gasket is arranged between the swivel outer casing 2 and the front end cover 1, and since there is no relative rotation between the swivel outer casing 2 and the front end cover 1, the tetrafluoro gasket is used to replace the original static universal plug seal 5, thereby reducing the cost while meeting the sealing performance. One side of the liquid passing inner sleeve 6 is fixedly connected with an inner sleeve baffle plate 9 through a screw, the inner sleeve baffle plate 9 is rotatably connected with the front end cover 1 and the rotary joint outer sleeve 2 through a second cylindrical roller 8 respectively, and the specification of the second cylindrical roller 8 is 3.5 multiplied by 5mm in the example.
According to the above embodiment, preferably, the rear end cap 4 is tightly connected with the liquid through inner sleeve 6 by screws, a dynamic flooding plug seal 3 is arranged between the rear end cap 4 and the outer sleeve 2 of the rotary joint, and a static flooding plug seal 5 is arranged between the rear end cap 4 and the liquid through inner sleeve 6, in this example, 2 sets of static flooding plug seals 5 are arranged. Wherein the thickness of dynamic general stopper seals 3 is thicker relatively, reduces the wear rate, increases twice static general stopper and seals 5 on one side of dynamic general stopper seals 3, increases the elastic compression volume of sealing washer when increasing the area of contact between rear end cap 4 and the liquid expert endotheca 6.
The utility model has small and light structure and scientific and reasonable design, changes the original ball into the roller, changes point contact into surface contact, increases the contact area, avoids the phenomenon of occlusion and clamping between rolling parts, has better and smooth rotation, cancels the function of nitrogen gas blowing, in addition, the first cylindrical roller 7 is positioned outside the liquid-passing inner sleeve 6, is convenient for disassembling the liquid-passing inner sleeve 6 and replacing the sealing ring inside the liquid-passing inner sleeve, and has convenient and rapid field maintenance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a self-lubricating swivel, its characterized in that includes the swivel overcoat, rotates the liquid endotheca that leads to of connecting in the swivel overcoat, can dismantle front end housing and the rear end cap of connecting in swivel overcoat and leading to liquid endotheca both ends, the storage tank has been seted up to swivel overcoat inside wall, be provided with first cylindrical roller in the storage tank, it is connected with the swivel overcoat rotation through first cylindrical roller to lead to liquid endotheca outer wall.
2. The self-lubricating rotary joint according to claim 1, wherein the rotary joint outer sleeve is tightly connected with the front end cover, and a tetrafluoro gasket is arranged between the rotary joint outer sleeve and the front end cover.
3. The self-lubricating rotary joint according to claim 2, wherein an inner sleeve baffle is fixedly connected to one side of the liquid-permeable inner sleeve, and the inner sleeve baffle is rotatably connected to the front end cover through a second cylindrical roller.
4. A self-lubricating rotary joint according to claim 2 or 3, wherein the rear end cap is tightly connected with the inner sleeve for liquid passing, and a dynamic flooding plug seal is arranged between the rear end cap and the outer sleeve of the rotary joint.
5. The self-lubricating rotary joint according to claim 4, wherein a static flooding plug seal is provided between the rear end cap and the liquid-permeable inner sleeve.
6. A self-lubricating rotary joint according to claim 5, wherein the static flood seal is provided in 2 sets.
7. The self-lubricating swivel of claim 1, wherein the receiving groove is circumferentially disposed on an inner wall of the swivel housing.
8. The self-lubricating rotary joint of claim 7, wherein there are 2 receiving slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637471.5U CN215634468U (en) | 2021-07-19 | 2021-07-19 | Self-lubricating rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637471.5U CN215634468U (en) | 2021-07-19 | 2021-07-19 | Self-lubricating rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634468U true CN215634468U (en) | 2022-01-25 |
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ID=79890728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121637471.5U Active CN215634468U (en) | 2021-07-19 | 2021-07-19 | Self-lubricating rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634468U (en) |
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2021
- 2021-07-19 CN CN202121637471.5U patent/CN215634468U/en active Active
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