CN213206878U - Ball bearing rotary joint - Google Patents
Ball bearing rotary joint Download PDFInfo
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- CN213206878U CN213206878U CN202022203854.3U CN202022203854U CN213206878U CN 213206878 U CN213206878 U CN 213206878U CN 202022203854 U CN202022203854 U CN 202022203854U CN 213206878 U CN213206878 U CN 213206878U
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- ball bearing
- energy storage
- rotating shaft
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Abstract
The utility model provides a ball bearing rotary joint, which comprises a first joint, a rotary shaft and a second joint, wherein one end of the rotary shaft is connected with the second joint through a thread, and a compensation sealing structure is arranged between the other end of the rotary shaft and the first joint; the compensation sealing structure comprises a piston ring, a sliding ring and an energy storage sealing ring, wherein a first cylinder, a second cylinder and a third cylinder are respectively arranged on the piston ring; the side end of the third cylinder abuts against the rotating shaft, the second cylinder is sleeved with a slip ring, and the outer surface of the slip ring abuts against the inner wall of the first joint; a containing groove is defined between the first column and the inner wall of the first joint, and the energy storage sealing ring is arranged in the containing groove; one end of the energy storage sealing ring is abutted against the first joint, and the other end of the energy storage sealing ring is abutted against the piston ring and the sliding ring. The utility model provides a pair of ball bearing rotary joint has overcome the big and short defect of life of current rotary joint start-up moment.
Description
Technical Field
The utility model relates to a rotary joint field especially relates to a ball bearing rotary joint.
Background
The rotary joint is a sealed rotary connector capable of rotating 360 degrees to convey media, and the rotary joint is used for conveying liquid from the side of a pipeline into a rotating or reciprocating device and discharging the liquid from the rotating or reciprocating device. The field of application of rotary joints covers almost every manufacturing industry, such as: metallurgy, machine tools, power generation, petroleum, rubber, plastics, textile, printing and dyeing, pharmacy, cigarette, paper making, food, feed processing and the like.
The existing rotary joint generally comprises a liquid inlet pipe, a rotating shaft and a liquid outlet pipe, wherein the rotating shaft is arranged in the liquid inlet pipe and can rotate, and the liquid outlet pipe is connected with the rotating shaft; because the side end of the rotating shaft is abutted against the liquid inlet pipe, the moment is larger and the friction is larger when the rotating shaft is started, so that the service life is influenced; and after the sealing device is used for a period of time, the rotating shaft is abraded, so that the sealing performance is reduced, and the service life is short.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims to solve the problem that a ball bearing rotary joint is provided to overcome the big and short defect of life of current rotary joint start-up moment.
(II) technical scheme
In order to solve the technical problem, the utility model provides a ball bearing rotary joint, which comprises a first joint, a rotary shaft and a second joint, wherein the rotary shaft is rotatably arranged in the first joint; one end of the rotating shaft is in threaded connection with the second joint, and a compensation sealing structure is arranged between the other end of the rotating shaft and the first joint; the compensation sealing structure comprises a piston ring, a sliding ring and an energy storage sealing ring, wherein a first cylinder, a second cylinder and a third cylinder which are connected and have sequentially increased diameters are arranged on the piston ring; the side end of the third cylinder abuts against the rotating shaft, the second cylinder is sleeved with the slip ring, and the outer surface of the slip ring abuts against the inner wall of the first joint; a containing groove is defined between the first column and the inner wall of the first joint, and the energy storage sealing ring is arranged in the containing groove; one end of the energy storage sealing ring is abutted against the first joint, the other end of the energy storage sealing ring is abutted against the piston ring and the sliding ring, and the energy storage sealing ring always enables the piston ring and the sliding ring to have a movement trend approaching the rotating shaft.
Furthermore, a bearing locking piece is connected to the right end of the first joint in a threaded manner, and the rotating shaft penetrates through the bearing locking piece; the rotary shaft is provided with an annular bulge, and a plurality of balls are arranged between the annular bulge and the bearing locking piece at equal intervals. The bearing locking piece is provided with a first rolling way, the bearing locking piece is provided with a second rolling way matched with the first rolling way, and the first rolling way and the second rolling way are encircled to form an annular rolling way for rolling the balls. Wherein the first raceway and the second raceway have the same structure.
Further, the rotation axis with install O type circle between the second connects, install the ED sealing washer on the first joint, the second connect with install the dust ring between the bearing retaining member.
Further, be provided with the inlet in the first joint, be provided with the perforating hole in the rotation axis, be provided with the liquid outlet on the second connects, the inlet the perforating hole with the liquid outlet is linked together. The first connector is provided with a first external thread which is convenient to be connected with an external pipe fitting, and the second connector is provided with a second external thread which is convenient to be connected with the external pipe fitting. The piston ring is made of PA; the energy storage sealing ring is a rubber ring and is made of fluororubber.
(III) advantageous effects
The utility model provides a ball bearing rotary joint, set up the compensation seal structure and through the mutual cooperation of piston ring, sliding ring and energy storage sealing washer, adopt energy storage sealing washer and piston ring combination seal, can better reduce friction and start-up moment to life has been prolonged; when the piston ring and the rotating shaft are matched to work and wear, the reserved compression amount of the energy storage sealing ring can play a role in compensating and sealing, leakage is prevented, and the service life is longer; the defects of large starting torque and short service life of the conventional rotary joint are overcome.
Drawings
Fig. 1 is a schematic structural view of a ball bearing rotary joint according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic structural view of a ball bearing rotary joint piston ring of the present invention;
fig. 4 is a schematic structural view of a rotary shaft of a ball bearing rotary joint according to the present invention;
FIG. 5 is a schematic view of a ball bearing swivel joint bearing retainer of the present invention;
fig. 6 is a schematic structural view of a first joint of a ball bearing rotary joint according to the present invention;
fig. 7 is a schematic structural view of a second joint of the ball bearing rotary joint of the present invention;
the corresponding part names for the various reference numbers in the figures are: 1. a first joint; 2. a rotating shaft; 3. a second joint; 4. a piston ring; 5. a slip ring; 6. an energy storage sealing ring; 7. a containing groove; 8. a bearing lock; 9. a ball bearing; 10. an O-shaped ring; 11. an ED seal ring; 12. a dust ring; 101. a liquid inlet; 102. a first external thread; 201. an annular projection; 202. a first raceway; 203. a through hole; 301. a liquid outlet; 302. a second external thread; 401. a first column; 402. a second cylinder; 403. a third column; 801. a second raceway.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, the utility model provides a ball bearing rotary joint, including first joint 1, rotation axis 2 and second joint 3, rotation axis 2 is installed to the internal rotation of first joint 1, is provided with inlet 101 in the first joint 1, is provided with perforating hole 203 in the rotation axis 2, is provided with liquid outlet 301 on the second joint 3, and inlet 101, perforating hole 203 and liquid outlet 301 are linked together. The first connector 1 is provided with a first external thread 102 for facilitating connection with an external pipe, and the second connector 3 is provided with a second external thread 302 for facilitating connection with an external pipe.
Referring to fig. 1 and 2, one end of the rotating shaft 2 is connected with the second joint 3 through a thread, and a compensation sealing structure is arranged between the other end of the rotating shaft 2 and the first joint 1; the compensation sealing structure comprises a piston ring 4, a sliding ring 5 and an energy storage sealing ring 6, wherein the piston ring 4 is made of PA (polyamide) and has excellent wear resistance and sealing property; the energy storage sealing ring 6 is a rubber ring and is made of fluororubber.
Referring to fig. 2, the piston ring 4 is provided with a first cylinder 401, a second cylinder 402 and a third cylinder 403 which are connected and have successively larger diameters; the side end of the third column 403 abuts against the rotating shaft 2, the second column 402 is sleeved with a slip ring 5, and the outer surface of the slip ring 5 abuts against the inner wall of the first joint 1; a containing groove 7 is defined between the first column 401 and the inner wall of the first joint 1, and the energy storage sealing ring 6 is arranged in the containing groove 7; one end of the energy storage sealing ring 6 is abutted against the first joint 1, the other end of the energy storage sealing ring is abutted against the piston ring 4 and the sliding ring 5, and the energy storage sealing ring 6 always enables the piston ring 4 and the sliding ring 5 to move towards the rotating shaft 2. The energy storage sealing ring and the piston ring are combined for sealing, so that friction and starting torque can be reduced better, and the service life is prolonged; and when the piston ring and the rotating shaft work in a matching way and are abraded, the reserved compression amount of the energy storage sealing ring plays a role in compensation sealing, leakage is prevented, and the service life is long.
Referring to fig. 1, 4 and 5, a bearing locking member 8 is threadedly connected to a right end of the first joint 1, and the rotating shaft 2 penetrates through the bearing locking member 8; the rotating shaft 2 is provided with an annular protrusion 201, and a plurality of balls 9 are annularly arranged between the annular protrusion 201 and the bearing locking piece 8 at equal intervals. The annular protrusion 201 is provided with a first raceway 202, the bearing locking member 8 is provided with a second raceway 801 matched with the first raceway 202, and the first raceway 202 and the second raceway 801 form an annular raceway for rolling the balls 9. The first raceway 202 and the second raceway 801 have the same structure.
Referring to fig. 1, in order to improve the sealing performance, an O-ring 10 is installed between a rotating shaft 2 and a second coupling 3, and an ED sealing ring 11 is installed on the first coupling 1. To prevent dust clogging, a dust ring 12 is mounted between the second adapter 3 and the bearing lock 8.
The ball bearing rotary joint provided by the embodiment has the advantages of simple structure and long service life; the compensation sealing structure is arranged, and the energy storage sealing ring and the piston ring are combined for sealing through mutual matching of the piston ring, the sliding ring and the energy storage sealing ring, so that friction and starting torque can be better reduced, and the service life is prolonged; and when the piston ring and the rotating shaft work in a matching way and are abraded, the reserved compression amount of the energy storage sealing ring plays a role in compensation sealing, and the service life is longer.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A ball bearing rotary joint comprises a first joint (1), a rotary shaft (2) and a second joint (3), wherein the rotary shaft (2) is rotatably mounted in the first joint (1); the method is characterized in that: one end of the rotating shaft (2) is in threaded connection with the second joint (3), and a compensation sealing structure is arranged between the other end of the rotating shaft (2) and the first joint (1); the compensation sealing structure comprises a piston ring (4), a sliding ring (5) and an energy storage sealing ring (6), wherein a first cylinder (401), a second cylinder (402) and a third cylinder (403) which are connected and have successively increased diameters are respectively arranged on the piston ring (4); the side end of the third cylinder (403) abuts against the rotating shaft (2), the second cylinder (402) is sleeved with the slip ring (5), and the outer surface of the slip ring (5) abuts against the inner wall of the first joint (1); a containing groove (7) is defined between the first column (401) and the inner wall of the first joint (1), and the energy storage sealing ring (6) is arranged in the containing groove (7); one end of the energy storage sealing ring (6) abuts against the first joint (1), the other end of the energy storage sealing ring (6) abuts against the piston ring (4) and the sliding ring (5), and the energy storage sealing ring (6) enables the piston ring (4) and the sliding ring (5) to move towards the rotating shaft (2).
2. The ball bearing swivel joint of claim 1, wherein: a bearing locking piece (8) is connected to the right end of the first connector (1) in a threaded mode, and the rotating shaft (2) penetrates through the bearing locking piece (8); be provided with annular arch (201) on rotation axis (2), annular arch (201) with annular equidistant being provided with a plurality of balls (9) between bearing retaining member (8).
3. The ball bearing swivel joint of claim 2, wherein: the bearing locking piece is characterized in that a first rolling way (202) is arranged on the annular protrusion (201), a second rolling way (801) matched with the first rolling way (202) is arranged on the bearing locking piece (8), and the first rolling way (202) and the second rolling way (801) enclose an annular rolling way for rolling the balls (9).
4. The ball bearing swivel joint of claim 3, wherein: the first raceway (202) and the second raceway (801) are identical in structure.
5. The ball bearing swivel joint of claim 1, wherein: an O-shaped ring (10) is installed between the rotating shaft (2) and the second connector (3), and an ED sealing ring (11) is installed on the first connector (1).
6. The ball bearing swivel joint of claim 2, wherein: and a dustproof ring (12) is arranged between the second joint (3) and the bearing locking piece (8).
7. The ball bearing swivel joint of claim 1, wherein: be provided with inlet (101) in first joint (1), be provided with perforating hole (203) in rotation axis (2), be provided with liquid outlet (301) on second joint (3), inlet (101) perforating hole (203) with liquid outlet (301) are linked together.
8. The ball bearing swivel joint of claim 1, wherein: the first connector (1) is provided with a first external thread (102) convenient for being connected with an external pipe fitting, and the second connector (3) is provided with a second external thread (302) convenient for being connected with the external pipe fitting.
9. The ball bearing swivel joint of claim 1, wherein: the piston ring (4) is made of PA; the energy storage sealing ring (6) is a rubber ring and is made of fluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203854.3U CN213206878U (en) | 2020-09-30 | 2020-09-30 | Ball bearing rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203854.3U CN213206878U (en) | 2020-09-30 | 2020-09-30 | Ball bearing rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213206878U true CN213206878U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022203854.3U Active CN213206878U (en) | 2020-09-30 | 2020-09-30 | Ball bearing rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213206878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889280A (en) * | 2024-03-15 | 2024-04-16 | 泰州市贝特思管道装备有限公司 | Low-resistance bidirectional rotation compensator |
-
2020
- 2020-09-30 CN CN202022203854.3U patent/CN213206878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889280A (en) * | 2024-03-15 | 2024-04-16 | 泰州市贝特思管道装备有限公司 | Low-resistance bidirectional rotation compensator |
| CN117889280B (en) * | 2024-03-15 | 2024-05-28 | 泰州市贝特思管道装备有限公司 | Low-resistance bidirectional rotation compensator |
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