CN219933296U - Single-direction and two-direction inner pipe rotary joint - Google Patents
Single-direction and two-direction inner pipe rotary joint Download PDFInfo
- Publication number
- CN219933296U CN219933296U CN202321211537.3U CN202321211537U CN219933296U CN 219933296 U CN219933296 U CN 219933296U CN 202321211537 U CN202321211537 U CN 202321211537U CN 219933296 U CN219933296 U CN 219933296U
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- seal
- connecting pipe
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- 238000007789 sealing Methods 0.000 claims abstract description 172
- 230000005540 biological transmission Effects 0.000 claims abstract description 88
- 230000003068 static effect Effects 0.000 claims description 47
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Abstract
The utility model discloses a single-and-double inner pipe rotary joint, which comprises a first transmission shaft, a second transmission shaft, a connecting pipe A and a connecting pipe B, wherein two different mediums can pass through the connecting pipe A and the connecting pipe B; the side wall of the sealing shell is provided with a second connector and a third connector, and the second connector, the sealing shell, the connecting pipe B and the third connector are communicated with each other in sequence; the sealing end cover is fixed at the end part of the sealing shell, a first connector is fixed on the sealing end cover, and the first connector, the first transmission shaft and the connecting pipe A are sequentially communicated; the upper sealing assembly is sleeved outside the first transmission shaft; the lower sealing assembly is sleeved outside the second transmission shaft. The utility model has the beneficial effects that the connecting pipe A, the connecting pipe B, the first transmission shaft and the second transmission shaft form a single-direction and two-direction inner pipe rotary seal, two mutually isolated mediums such as steam, hot water, nitrogen and the like can be simultaneously introduced into the inner pipe, and the sealing device can be used for auxiliary sealing in a stirrer device.
Description
Technical Field
The utility model relates to the technical field of sealing rotary joints, in particular to a single-direction and double-direction inner tube rotary joint.
Background
The rotary joint belongs to the sealing industry in the mechanical basic part industry. Is a special mechanical sealing element and is widely applied to various industries of national economy such as metallurgy, papermaking, textile, petrifaction, food, automobiles, shipbuilding, machine tools, engineering equipment, wind power generation and the like. Under the large trend of finer specialized division of industry, major whole machine (whole car) manufacturers worldwide outsource a large number of part manufacturing businesses to gradually form a batch of part manufacturing enterprises matched with the part manufacturing businesses. The rotary joint is one kind of part producing industry chain, belongs to mechanical sealing part industry, and is used in sealing and cold and heat conducting support of mechanical equipment in steel, paper making, printing and dyeing, engineering machinery and other industry.
The rotary joint in the prior art is arranged in mechanical equipment, a rotatable shaft is arranged in the rotary joint, a sealing structure is arranged on the rotary shaft sleeve, meanwhile, media can be introduced into the rotary shaft, rotation of the shaft and media introduction can be simultaneously carried out, but only one type of media can be generally introduced into the rotary shaft, and the media cannot be cooled in the process of being introduced into the mechanical equipment.
Disclosure of Invention
The utility model aims to solve the problems, and designs a single-direction and double-direction inner pipe rotary joint. Comprises a first transmission shaft;
the second transmission shaft is fixedly connected with the first transmission shaft, and the first transmission shaft and the second transmission shaft are coaxially arranged;
the connecting pipe A is fixed in the first transmission shaft;
a connecting pipe B is fixed in the second transmission shaft, the connecting pipe B and the connecting pipe A are coaxially arranged, the connecting pipe A stretches into the connecting pipe B, and two different mediums can pass through the connecting pipe A and the connecting pipe B;
the sealing shell is arranged outside the first transmission shaft and the second transmission shaft, a second connector and a third connector are arranged on the side wall of the sealing shell, and the second connector, the sealing shell, the connecting pipe B and the third connector are communicated with each other in sequence;
the sealing end cover is fixed at the end part of the sealing shell and is fixedly provided with a first connector, and the first connector, the first transmission shaft and the connecting pipe A are sequentially communicated;
the upper sealing assembly is sleeved outside the first transmission shaft;
and the lower sealing assembly is sleeved outside the second transmission shaft.
Further, the upper sealing assembly comprises an upper sealing movable ring assembly and an upper sealing static ring assembly which are sleeved in sequence along the first transmission shaft, and an upper elastic piece is fixed between the upper sealing static ring assembly and the sealing shell.
Further, the upper sealing moving ring assembly comprises an upper moving ring seat, an upper sealing moving ring A, an upper sealing moving ring B and a first anti-rotation pin, the upper moving ring seat is sleeved outside the first transmission shaft, the upper moving ring seat is matched with the upper sealing moving ring A and the upper sealing moving ring B, and two first anti-rotation pins are respectively arranged on the side parts of the upper moving ring seat in a slotting mode so as to respectively fix the upper sealing moving ring A and the upper sealing moving ring B which are arranged on the upper moving ring seat.
Further, the upper seal static ring assembly comprises an upper seal static ring A, an upper seal static ring B, an upper seal push ring A and an upper seal push ring B, the end faces of the upper seal dynamic ring A and the upper seal dynamic ring B are respectively and tightly attached to the end faces of the upper seal static ring A and the upper seal static ring B to form dynamic seal connection, the end faces of the upper seal static ring A and the upper seal static ring B are respectively matched with the upper seal push ring A and the upper seal push ring B, and a second anti-rotation pin is arranged on the seal shell to position the upper seal static ring A, the upper seal static ring B, the upper seal push ring A and the upper seal push ring B.
Further, the lower seal assembly comprises a lower seal movable ring assembly and a lower seal stationary ring assembly which are arranged along the second transmission shaft sleeve, the lower seal stationary ring assembly and the lower seal movable ring assembly are respectively arranged at the upper end and the lower end in the seal shell, the lower seal movable ring assembly is provided with two groups, and a lower elastic piece is fixed between the two groups of lower seal movable ring assemblies.
Further, the lower sealing static ring assembly comprises a lower sealing static ring seat A, a lower sealing static ring seat B, a lower sealing static ring A and a lower sealing static ring B, wherein the lower sealing static ring seat A and the lower sealing static ring seat B are mutually matched with the sealing shell, and the end surfaces of the lower sealing static ring seat A and the lower sealing static ring seat B are respectively provided with the lower sealing static ring A and the lower sealing static ring B.
Further, the lower sealing moving ring assembly comprises a lower sealing moving ring A, a lower sealing moving ring B, a lower sealing pushing ring A and a lower sealing pushing ring B, the lower sealing moving ring A and the lower sealing moving ring B are respectively and tightly arranged with a lower sealing static ring A and a lower sealing static ring B to form dynamic sealing connection, non-sealing end faces of the lower sealing moving ring A and the lower sealing moving ring B are respectively matched with corresponding end faces of the lower sealing pushing ring A and the lower sealing pushing ring B, a lower spring seat is arranged between the lower sealing pushing ring A and the lower sealing pushing ring B, and the lower spring seat is used for fixing a lower elastic piece.
Further, the first transmission shaft sleeve is provided with a first bearing, the second transmission shaft sleeve is provided with a second bearing, a first end cover is installed at the end part of the first bearing, a second end cover is installed at the end part of the second bearing, a Y-shaped rubber sealing ring is installed between the first end cover and the first transmission shaft, and a framework oil seal is installed between the second end cover and the second transmission shaft.
The beneficial effects achieved by the technical scheme of the utility model are that: (1) The connecting pipe A, the connecting pipe B, the first transmission shaft and the second transmission shaft form a single-direction and two-direction inner pipe rotary seal, two mutually isolated mediums such as steam, hot water, nitrogen and the like can be simultaneously introduced into the connecting pipe A and the connecting pipe B, the connecting pipe B can perform cooling operation on the medium in the connecting pipe A or perform heat preservation operation on the medium introduced into the connecting pipe A, and the connecting pipe A can be used for auxiliary sealing in a stirrer device; (2) Through the arrangement of two sets of double-end-face mechanical seals, an upper bearing, a lower bearing and the like, the arbitrary rotation direction of the rotating shaft is realized, the operation is stable, the sealing performance is good, and the service life is long.
Drawings
FIG. 1 is a schematic view of the internal structure of a single-directional inner tube rotary joint according to the present utility model;
FIG. 2 is an enlarged view of a portion of the utility model at reference A;
FIG. 3 is an enlarged view of a portion of the utility model at B;
in the figure, 1, a first transmission shaft; 2. a second drive shaft; 3. taking over the A; 4. taking over the B; 5. a seal housing; 51. a first bearing; 52. a second bearing; 53. a first end cap; 54. a second end cap; 55. a first connector; 56. a second connector; 57. a third connector; 58. y-shaped rubber sealing rings; 59. a framework oil seal; 6. sealing the end cover; 7. an upper seal ring assembly; 71. an upper moving ring seat; 72. an upper seal ring A; 73. an upper seal ring B; 74. a first anti-rotation pin; 8. an upper seal stationary ring assembly; 81. an upper sealing stationary ring A; 82. an upper sealing stationary ring B; 83. an upper sealing push ring A; 84. an upper sealing push ring B; 85. a second anti-rotation pin; 9. an upper elastic member; 10. a lower seal ring assembly; 101. a lower sealing moving ring A; 102. a lower seal ring B; 103. a lower sealing push ring A; 104. a lower sealing push ring B; 11. a lower seal stationary ring assembly; 111. a lower sealing static ring seat A; 112. a lower sealing static ring seat B; 113. a lower sealing stationary ring A; 114. a lower sealing stationary ring B; 12. a lower elastic member; 121. a lower spring seat; 13. an upper bearing seat; 14. a lower bearing seat; 15. and (5) an upper shaft sleeve.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings, wherein a single-direction and double-direction inner tube rotary joint, as shown in fig. 1, comprises a first transmission shaft 1;
the second transmission shaft 2 is fixedly connected with the first transmission shaft 1, and the first transmission shaft 1 and the second transmission shaft 2 are coaxially arranged;
a connecting pipe A3 is fixed in the first transmission shaft 1;
a connecting pipe B4 is fixed in the second transmission shaft 2, the connecting pipe B4 and the connecting pipe A3 are coaxially arranged, and the connecting pipe A stretches into the connecting pipe B, and two different mediums can pass through the connecting pipe A3 and the connecting pipe B4;
the sealing shell 5 is arranged outside the first transmission shaft 1 and the second transmission shaft 2, a second connector 56 and a third connector 57 are arranged on the side wall of the sealing shell 5, and the second connector 56, the sealing shell 5, the connecting pipe B4 and the third connector 57 are communicated with each other in sequence;
the sealing end cover 6 is fixed at the end part of the sealing shell 5, the sealing end cover 6 is fixed with a first connector 55, and the first connector, the first transmission shaft 1 and the connecting pipe A3 are communicated in sequence;
the upper sealing assembly is sleeved outside the first transmission shaft 1;
the lower sealing assembly is sleeved outside the second transmission shaft 2.
The first transmission shaft 1 and the second transmission shaft 2 are fixedly connected and form a pipeline, the connecting pipe A3 and the connecting pipe B4 are arranged in the formed pipeline, one end of the connecting pipe A3 is arranged at the lower end of the first transmission shaft 1, the other end of the connecting pipe A3 is arranged at the upper end of the second transmission shaft 2, and the connecting pipe B4 is arranged inside the second transmission shaft 2. In this embodiment, gas is introduced into the adapter tube A3, and hot water is introduced into the adapter tube B4. Wherein take over A3 is gaseous one-way pipe, and gas gets into take over A3 from first connector 55, takes over B4 is the two-way pipe of hot water, and hot water gets into take over B4 from second connector 56, flows out from third connector 57, also can flow in from third connector 57, flows out from second connector 56, and the setting of above-mentioned one-way pipe has realized that intraductal can let in two kinds of media such as steam, hot water, nitrogen gas that keep apart each other simultaneously, can be used to the auxiliary seal in the agitator device of operating shaft up-and-down reciprocating motion.
The first transmission shaft comprises an upper transmission shaft insert sleeve and an upper transmission shaft insert seat, the lower end face of the upper transmission shaft insert seat is matched with the upper end of the lower transmission shaft insert sleeve, and the upper transmission shaft insert seat is connected with an anti-rotation pin through a cross groove countersunk head screw so as to tightly connect the first transmission shaft and the second transmission shaft together to form an outermost pipeline, a screw jacket is arranged at the uppermost end part of the upper transmission shaft insert sleeve, and an elastic retainer ring for a shaft is arranged on the upper side of the screw jacket and positioned at the upper end part of the upper transmission shaft insert sleeve in a slotting mode, so that a first bearing outside the first transmission shaft can rotate along with the first transmission shaft stably.
The upper sealing assembly comprises an upper sealing movable ring assembly 7 and an upper sealing static ring assembly 8 which are sequentially sleeved along the first transmission shaft 1, and an upper elastic piece 9 is fixed between the upper sealing static ring assembly 8 and the sealing shell 5. The upper seal stationary ring assembly 8 and the upper seal movable ring assembly 7 are combined to form a radial double-end-face mechanical seal and are arranged in the seal shell 5.
As shown in fig. 2, the upper sealing moving ring assembly 7 includes an upper moving ring seat 71, an upper sealing moving ring a72, an upper sealing moving ring B73 and a first anti-rotation pin 74, the first transmission shaft 1 is sleeved with the upper moving ring seat 71, the upper moving ring seat 71 is matched with the upper sealing moving ring a72 and the upper sealing moving ring B73, and two first anti-rotation pins 74 are respectively slotted on the side portions of the upper moving ring seat 71 to respectively fix the upper sealing moving ring a72 and the upper sealing moving ring B73 arranged thereon. The inner side of the upper moving ring seat 71 is matched with the outer side of the first transmission shaft 1.
The upper seal static ring assembly 8 comprises an upper seal static ring A81, an upper seal static ring B82, an upper seal push ring A83 and an upper seal push ring B84, the end faces of the upper seal dynamic ring A72 and the upper seal dynamic ring B73 are respectively and tightly attached to the end faces of the upper seal static ring A81 and the upper seal static ring B82 to form dynamic seal connection, the end faces of the upper seal static ring A81 and the upper seal static ring B82 are respectively matched with the upper seal push ring A83 and the upper seal push ring B84, and a second anti-rotation pin 85 is arranged on the seal shell 5 to position the upper seal static ring A81, the upper seal static ring B82, the upper seal push ring A83 and the upper seal push ring B84. The lower end faces of the upper sealing static ring A81 and the upper sealing static ring B82 are respectively matched with the upper end faces of the upper sealing push ring A83 and the upper sealing push ring B84, the upper elastic pieces 9 are fixed on the lower end faces of the upper sealing push ring A83 and the upper sealing push ring B84, the lower ends of the upper elastic pieces 9 extend into holes formed in the sealing shell 5, and the second anti-rotation pins 85 are used for positioning the upper sealing static ring A81 and the upper sealing static ring B82 and the upper sealing push ring A83 and the upper sealing push ring B84, so that axial compensation of the upper sealing static ring A81 on the upper sealing static ring B82 is realized.
As shown in fig. 1 and 3, the lower seal assembly includes a lower seal moving ring assembly 10 and a lower seal stationary ring assembly 11 sleeved along the second transmission shaft 2, the lower seal stationary ring assembly 11 and the lower seal moving ring assembly 10 are respectively disposed at the upper and lower ends in the seal housing 5, the lower seal moving ring assembly 10 is provided with two groups, and a lower elastic member 12 is fixed between the two groups of lower seal moving ring assemblies 10. The lower seal ring assembly 10 and the lower seal stationary ring assembly 11 form an axial back-to-back double-ended mechanical seal and are disposed within a seal housing.
As shown in fig. 3, the lower seal stationary ring assembly 11 includes a lower seal stationary ring seat a111, a lower seal stationary ring seat B112, a lower seal stationary ring a113 and a lower seal stationary ring B114, the lower seal stationary ring seat a111 and the lower seal stationary ring seat B112 are mutually adapted to the seal housing 5, and the end surfaces of the lower seal stationary ring seat a111 and the lower seal stationary ring seat B112 are respectively provided with the lower seal stationary ring a113 and the lower seal stationary ring B114.
The lower seal moving ring assembly 10 comprises a lower seal moving ring A101, a lower seal moving ring B102, a lower seal pushing ring A103 and a lower seal pushing ring B104, wherein the lower seal moving ring A101 and the lower seal moving ring B102 are respectively and closely arranged with a lower seal static ring A113 and a lower seal static ring B114 to form dynamic seal connection, non-seal end faces of the lower seal moving ring A101 and the lower seal moving ring B102 are respectively matched with corresponding end faces of the lower seal pushing ring A103 and the lower seal pushing ring B104, a lower spring seat 121 is arranged between the lower seal pushing ring A103 and the lower seal pushing ring B104, and the lower spring seat 121 is used for fixing a lower elastic element 12. Through the design, the lower sealing moving ring A101 and the lower sealing moving ring B102 can rotate along with the second transmission shaft 2, and the lower sealing moving ring A101 and the lower sealing moving ring B102 can realize axial compensation.
As shown in fig. 1, the first transmission shaft 1 is sleeved with a first bearing 51, the second transmission shaft 2 is sleeved with a second bearing 52, a first end cover 53 is installed at the end part of the first bearing 51, a second end cover 54 is installed at the end part of the second bearing 52, a Y-shaped rubber sealing ring 58 is installed between the first end cover 53 and the first transmission shaft 1, and a framework oil seal 59 is installed between the second end cover 54 and the second transmission shaft 2.
The first transmission shaft 1 overcoat is equipped with the bolster bearing housing assembly, and bolster bearing housing assembly sets up in the space that end cover and seal housing 5 formed, and first transmission shaft 1 overcoat is equipped with first bearing 51 and bolster bearing housing 13, the bolster bearing housing assembly includes top axle sleeve 15 and anti-rotation pin, top axle sleeve 15 outside and bolster bearing housing 13 inboard constitute a cavity and place first bearing 51, first bearing 51 upside is located top axle sleeve 15 outside and sets up first end cover 53, and the inboard fluting of first end cover 53 sets up Y shape rubber seal 58, has improved the sealing performance of whole structure. The upper side of the L-shaped bulge at the lower part of the upper shaft sleeve 15 is clamped with the first bearing 51, and an anti-rotation pin is arranged on the upper side of the L-shaped bulge, and the bearing can be ensured to rotate stably along with the rotating shaft through the design that the anti-rotation pin is fixedly connected with the upper sealing moving ring assembly 7, and the upper sealing moving ring assembly can also rotate with the upper mechanical seal.
The upper side of the upper bearing seat 13 is matched with the lower side of the first end cover 53, the upper side of the first end cover 53 is matched with the lower side of the sealing end cover 6, the upper bearing seat 13 and the lower bearing cover are connected through a hexagon socket head cap screw and a spring washer, and an inspection opening is formed in the upper bearing seat 13, so that the sealing effect can be well monitored, and the possible problems of mechanical sealing in operation can be timely found.
The side surface of the sealing shell 5 is also provided with a gas protection cavity port through which gas can be introduced into the upper sealing assembly to maintain certain pressure, so as to protect the mechanical seal.
The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.
Claims (8)
1. A single-direction and double-direction inner pipe rotary joint is characterized by comprising a first transmission shaft (1);
the second transmission shaft (2) is fixedly connected with the first transmission shaft (1), and the first transmission shaft (1) and the second transmission shaft (2) are coaxially arranged;
the connecting pipe A (3) is fixed in the first transmission shaft (1);
the connecting pipe B (4) is fixed in the second transmission shaft (2), the connecting pipe B (4) and the connecting pipe A (3) are coaxially arranged, the connecting pipe A (3) stretches into the connecting pipe B (4), and two different media can pass through the connecting pipe A (3) and the connecting pipe B (4);
the sealing shell (5) is arranged outside the first transmission shaft (1) and the second transmission shaft (2), a second connector (56) and a third connector (57) are arranged on the side wall of the sealing shell (5), and the second connector (56), the sealing shell (5), the connecting pipe B (4) and the third connector (57) are communicated with each other in sequence;
the sealing end cover (6) is fixed at the end part of the sealing shell (5), a first connector (55) is fixed on the sealing end cover (6), and the first connector (55), the first transmission shaft (1) and the connecting pipe A (3) are sequentially communicated;
the upper sealing assembly is sleeved outside the first transmission shaft (1) and is arranged in the sealing shell (5);
the lower sealing assembly is sleeved outside the second transmission shaft (2) and is arranged inside the sealing shell (5).
2. A single and double inner pipe rotary joint according to claim 1, wherein the upper sealing assembly comprises an upper sealing movable ring assembly (7) and an upper sealing stationary ring assembly (8) which are sleeved in sequence along the first transmission shaft (1), and an upper elastic piece (9) is fixed between the upper sealing stationary ring assembly (8) and the sealing shell (5).
3. A single and double inner pipe rotary joint according to claim 2, wherein the upper sealing moving ring assembly (7) comprises an upper moving ring seat (71), an upper sealing moving ring a (72), an upper sealing moving ring B (73) and a first anti-rotation pin (74), the upper moving ring seat (71) is sleeved outside the first transmission shaft (1), the upper moving ring seat (71) is matched with the upper sealing moving ring a (72) and the upper sealing moving ring B (73), and two first anti-rotation pins (74) are respectively arranged on the side parts of the upper moving ring seat (71) in a slotting mode so as to respectively fix the upper sealing moving ring a (72) and the upper sealing moving ring B (73) arranged on the upper moving ring seat.
4. A single and double inner pipe rotary joint according to claim 3, wherein the upper seal stationary ring assembly (8) comprises an upper seal stationary ring a (81), an upper seal stationary ring B (82), an upper seal push ring a (83) and an upper seal push ring B (84), the end faces of the upper seal movable ring a (72) and the upper seal movable ring B (73) are respectively in close fit with the end faces of the upper seal stationary ring a (81) and the upper seal stationary ring B (82) to form a dynamic seal connection, the end faces of the upper seal stationary ring a (81) and the upper seal stationary ring B (82) are respectively matched with an upper seal push ring a (83) and an upper seal push ring B (84), and a second anti-rotation pin (85) is arranged on the seal shell (5) to position the upper seal stationary ring a (81), the upper seal stationary ring B (82), the upper seal push ring a (83) and the upper seal push ring B (84).
5. A single and double inner pipe rotary joint according to claim 2, wherein the lower sealing assembly comprises a lower sealing movable ring assembly (10) and a lower sealing stationary ring assembly (11) which are sleeved along the second transmission shaft (2), the lower sealing movable ring assembly (10) is provided with two groups, a lower elastic piece (12) is fixed between the two groups of lower sealing movable ring assemblies (10), and the lower sealing movable ring assembly (10) is closely provided with the lower sealing stationary ring assembly (11).
6. The single and double inner pipe rotary joint according to claim 5, wherein the lower seal stationary ring assembly (11) comprises a lower seal stationary ring seat a (111), a lower seal stationary ring seat B (112), a lower seal stationary ring a (113) and a lower seal stationary ring B (114), the lower seal stationary ring seat a (111) and the lower seal stationary ring seat B (112) are mutually matched with the seal shell (5), and the lower seal stationary ring seat a (111) and the lower seal stationary ring seat B (112) are provided with a lower seal stationary ring a (113) and a lower seal stationary ring B (114) on the end surfaces.
7. The single and double inner pipe rotary joint according to claim 5, wherein the lower sealing moving ring assembly (10) comprises a lower sealing moving ring a (101), a lower sealing moving ring B (102), a lower sealing pushing ring a (103) and a lower sealing pushing ring B (104), the lower sealing moving ring a (101) and the lower sealing moving ring B (102) are respectively and closely arranged with a lower sealing static ring a (113) and a lower sealing static ring B (114) to form a dynamic sealing connection, non-sealing end surfaces of the lower sealing moving ring a (101) and the lower sealing moving ring B (102) are respectively matched with corresponding end surfaces of the lower sealing pushing ring a (103) and the lower sealing pushing ring B (104), a lower spring seat (121) is arranged between the lower sealing pushing ring a (103) and the lower sealing pushing ring B (104), and the lower spring seat (121) is used for fixing a lower elastic piece (12).
8. A single and double inner tube rotary joint according to claim 1, characterized in that the first transmission shaft (1) is sleeved with a first bearing (51), the second transmission shaft (2) is sleeved with a second bearing (52), a first end cover (53) is mounted at the end of the first bearing (51), a second end cover (54) is mounted at the end of the second bearing (52), a Y-shaped rubber sealing ring (58) is mounted between the first end cover (53) and the first transmission shaft (1), and a framework oil seal (59) is mounted between the second end cover (54) and the second transmission shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321211537.3U CN219933296U (en) | 2023-05-18 | 2023-05-18 | Single-direction and two-direction inner pipe rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321211537.3U CN219933296U (en) | 2023-05-18 | 2023-05-18 | Single-direction and two-direction inner pipe rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933296U true CN219933296U (en) | 2023-10-31 |
Family
ID=88496114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321211537.3U Active CN219933296U (en) | 2023-05-18 | 2023-05-18 | Single-direction and two-direction inner pipe rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933296U (en) |
-
2023
- 2023-05-18 CN CN202321211537.3U patent/CN219933296U/en active Active
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