TW202120852A - Fluid slip ring device - Google Patents

Abstract

Disclosed is a fluid slip ring device comprising: an outer stator and an inner rotor, wherein an external surface of the inner rotor is recessed with an annular groove to form an annular flow passage between an internal surface of the outer stator and the external surface of the inner rotor and, via the annular flow passage, a stator flow passage of the outer stator and a rotor flow passage of the inner rotor become a rotating communication state that a communication is kept while the inner rotor and the outer stator rotate relative to each other.

Description

Fluid slip ring device

The present invention relates to a slip ring, especially to a fluid slip ring device.

A slip ring is a device used to transmit energy and signals between a fixed structure and a rotating structure. The structure of the slip ring mainly includes two parts, the stationary part called the stator and the rotating part called the rotor. The stator of the slip ring is connected to the fixed structure of the device, and the rotor of the slip ring is connected to the rotating structure of the device and rotates accordingly, so that when the device is running, the fixed structure of the device and the rotating structure of the device are connected through the slip ring. Keep it in a state where energy and signal can be transmitted.

Generally speaking, slip rings can be divided into electric slip rings, fluid slip rings, smooth rings, etc. according to their transmission medium. Fluid slip rings are slip rings that can maintain communication while rotating and transmit gas, liquid, and fluid pressure. In the fluid slip ring of the prior art, if the number of groups of the fluid slip ring that can carry out fluid output and input is to be increased, more pipelines must be installed inside and a larger installation space is required. In this way, it is easy to cause problems such as higher installation difficulty, bulky slip ring, and tangled entanglement of pipelines, and there is a need for improvement.

Therefore, the object of the present invention is to provide a fluid slip ring device with a novel structure to improve the problems of the conventional fluid slip ring.

The technical means adopted by the present invention to solve the problems of the prior art is to provide a fluid slip ring device, comprising: an outer stator with a certain sub-end flow passage, and one of the communicating ends of the stator end flow passage extends to the outer stator And an inner rotor, which is relatively rotatably arranged in the outer stator in such a manner that the outer circumferential surface of the inner rotor fluid-tightly contacts the inner circumferential surface of the outer stator, and the inner rotor has an annular concave Grooves and a rotor end flow channel, the annular groove is corresponding to the axial position of the communicating end in the inner rotor and communicating with the communicating end, and is recessed in the outer circumference of the inner rotor along the circumferential direction The surface is formed as an annular flow passage located between the inner peripheral surface of the outer stator and the outer peripheral surface of the inner rotor, the rotor end flow passage is formed in the inner rotor and one end is connected to the annular flow passage, wherein When the inner rotor and the outer stator rotate relative to each other, the annular groove maintains communication with the communicating end, so that the stator end flow passage and the rotor end flow passage are in a rotating communication state that maintains communication during rotation.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein the outer stator has a plurality of stator end flow passages, and the communicating ends of the plurality of stator end flow passages are located at different axial positions of the outer stator The inner rotor has a plurality of annular grooves and a plurality of rotor end flow passages, and the plurality of the annular grooves are spaced apart from each other in the axial direction of the inner rotor and are respectively connected to the respective communicating ends of the stator end flow passages. Corresponding to the axial positions, a plurality of the rotor-end flow passages are respectively communicated with the individual annular grooves, so that the individual stator-end flow passages and the rotor-end flow passages are in the rotationally connected state.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein the inner rotor includes a rotor body and two or more seal rings, each of the seal rings is sleeved on the rotor body and is axially spaced apart from each other, and The annular groove is formed between two adjacent sealing rings.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein more than two sleeve grooves are formed on the outer peripheral surface of the rotor body, and two or more of the sealing rings are respectively sleeved in the individual sleeve grooves in.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein the inner rotor further includes an end sealing ring sleeved on the end of the rotor body.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein the rotor end flow passage includes an axial flow passage and a radial flow passage, the axial flow passage axially extends in the inner rotor, the The radial flow passage radially extends in the inner rotor and is connected between the annular groove and the axial flow passage.

In an embodiment of the present invention, a fluid slip ring device is provided, wherein a fixed sub-end fluid joint is provided on one side of the outer stator for connecting an external fluid pipeline, and the other end of the stator end flow channel is extended to connect to The stator end fluid connector.

In one embodiment of the present invention, a fluid slip ring device is provided, wherein one end surface of the inner rotor is provided with a rotor end fluid joint, and the other end of the rotor end flow channel is extended to connect to the rotor end fluid joint.

In one embodiment of the present invention, there is provided a fluid slip ring device, wherein the outer stator has a stator joint, the inner rotor has a rotor joint, and the stator joint is attached to an electric slip ring device. For the stator, the rotor coupling part is attached to the rotor of the electric slip ring device, so that the fluid slip ring device and the electric slip ring device are combined into a composite slip ring of electricity and fluid.

Through the technical means adopted in the present invention, the pipeline structure is replaced by a flow channel formed in the fluid slip ring device, so that the outer stator and the inner rotor of the fluid slip ring device are maintained in rotation through the flow channel formed by the structure of the fluid slip ring device. Connected state. Thereby, the fluid slip ring device of the present invention is easier to install because it does not need to install the internal pipeline, and it is easier to maintain a small volume due to the elimination of the pipeline structure, and there is no problem of pipeline entanglement, etc., and has better practicability.

Hereinafter, the embodiments of the present invention will be described based on Figs. 1 to 5. This description is not intended to limit the implementation of the present invention, but is a kind of embodiment of the present invention.

As shown in Figures 1 to 3b, a fluid slip ring device 100 according to an embodiment of the present invention includes: an outer stator 1 having a stator end flow passage 11, one of the stator end flow passages 11 communicating The end 111 extends to the inner peripheral surface 10 of the outer stator 1; and an inner rotor 2 which is relatively rotatable in such a manner that the outer peripheral surface 20 of the inner rotor 2 is in fluid-tight contact with the inner peripheral surface 10 of the outer stator 1 The inner rotor 2 has an annular groove 21 and a rotor end flow passage 22, and the annular groove 21 is corresponding to the axial position of the communicating end 111 in the inner rotor 2 And the communicating end 111 is provided on the outer circumferential surface 20 of the inner rotor 2 in a circumferential direction, and is formed on the inner circumferential surface 10 of the outer stator 1 and the outer circumferential surface 20 of the inner rotor 2 An annular flow passage between the rotor end flow passage 22 is formed in the inner rotor 2 and one end is connected to the annular flow passage, wherein when the inner rotor 2 and the outer stator 1 relatively rotate, the annular flow passage The communication with the communicating end 111 is maintained, so that the stator end flow passage 11 and the rotor end flow passage 22 are in a rotating communication state that maintains communication during rotation.

As shown in Figures 1 to 3b, according to the fluid slip ring device 100 of an embodiment of the present invention, the outer stator 1 has a plurality of stator-end flow passages 11, and the communicating ends 111 of the plurality of stator-end flow passages 11 are Located at different axial positions of the outer stator 1 (ie, different positions in the axial direction A), the inner rotor has a plurality of annular grooves 21 and a plurality of rotor end flow passages 22, and a plurality of the annular grooves 21 are spaced apart from each other in the axial direction A of the inner rotor 2 and respectively correspond to the respective communicating ends 111 of the stator-end flow passage 11 in the axial position, and a plurality of the rotor-end flow passages 22 are respectively associated with individual The annular groove 21 is in communication, so that the individual stator end flow passage 11 and the rotor end flow passage 22 are in the rotationally connected state. With this structure, it is only necessary to increase the number of stator-end runners 11 formed in the outer stator 1, and increase the number of the annular groove 21 and the rotor-end runners 22 formed in the inner rotor 2 Therefore, the number of groups that the fluid slip ring device 100 can output and input fluid can be easily increased in a limited space.

Preferably, as shown in Figure 4, according to the fluid slip ring device 100 of the embodiment of the present invention, the inner rotor 2 includes a rotor body 23 and two or more seal rings 24, each of which is sleeved on The rotor bodies 23 are axially spaced apart from each other, and the annular groove 21 is formed between two adjacent sealing rings 24. By using the sealing ring 24 to form the annular groove 21, the arrangement of the annular groove 21 can be made more flexible and convenient. In other words, as long as the number of the sealing rings 24 provided is changed, the number of the annular groove 21 can be adjusted simply and quickly to meet different requirements. In addition, since the sealing ring 24 is in direct contact with fluid and needs to be in fluid tight contact with the inner peripheral surface 10 of the outer stator 1, it is better to use a material resistant to temperature, acid and alkali, and abrasion resistance.

As shown in Figure 4, according to the fluid slip ring device 100 of the embodiment of the present invention, the rotor body 23 is formed with more than two sleeve grooves 231 on the outer peripheral surface, and the two or more seal rings 24 are respectively sleeved in The individual sleeves are placed in the grooves 231. With this structure, it is possible to ensure a fluid seal between the sealing ring 24 and the rotor body 23, and to enable the sealing ring 24 to be stably arranged without occurrence of occurrence in the axial direction A of the rotor body 23. slide.

As shown in Figure 4, according to the fluid slip ring device 100 of the embodiment of the present invention, the inner rotor 2 further includes an end seal ring 25, which is sleeved on the end of the rotor body 23 to further improve the sealing effect and prevent Internal fluid leakage and foreign matter infiltration.

As shown in Figures 3a to 4, in the fluid slip ring device 100 according to an embodiment of the present invention, the rotor end flow passage 22 includes an axial flow passage 221 and a radial flow passage 222. The axial flow passage 221 extends axially in the inner rotor 2, and the radial flow passage 222 extends radially (that is, perpendicular to the axial direction A) in the inner rotor 2 and is connected to the annular groove 21 and the axial flow passage Between 221. Since the axial flow passage 221 and the radial flow passage 222 are straight flow passages, they can be easily formed by common manufacturing methods such as drilling in the inner rotor 2 without increasing the manufacturing difficulty. Preferably, as shown in Figures 3a and 3b, when the rotor-end flow passages 22 are plural, the radial flow passages 222 and the axial flow passages of the plural rotor-end flow passages 22 221 can be formed at different circumferential angular positions of the inner rotor 2 so that the number of runners 22 at the rotor end can be simply increased without the problem of insufficient installation space.

As shown in Figures 1 and 2, according to the fluid slip ring device 100 of the embodiment of the present invention, one side of the outer stator 1 is provided with a stator end fluid joint 12 for connecting an external fluid pipeline (not shown in the figure). (Shown), the other end 112 of the stator end flow channel 11 is extended and connected to the stator end fluid connector 12. On the other hand, one end surface of the inner rotor 2 is provided with a rotor end fluid connector 26, and the other end of the rotor end flow passage 22 is extended to connect to the rotor end fluid connector 26. With the arrangement of the joint, the external fluid pipeline can be easily communicated with the internal flow passage of the fluid slip ring device 100.

As shown in Fig. 5, according to the fluid slip ring device 100 of the embodiment of the present invention, the outer stator 1 has a stator coupling portion 13, the inner rotor 2 has a rotor coupling portion 27, and the stator coupling portion 13 Attached to the stator 31 of an electric slip ring device 3, the rotor coupling portion 27 is attached to the rotor 32 of the electric slip ring device 3, so that the fluid slip ring device 100 and the electric slip ring device 3 are combined into an electric and A composite slip ring of fluid4. In this way, in addition to transmitting fluid and fluid pressure, the composite slip ring 4 can also transmit current and electrical signals at the same time by being combined to achieve a wider range of applications. In this embodiment, the stator coupling portion 13 is a coupling hole for coupling the fluid slip ring device 100 and the electric slip ring device 3 by screws, fixing pins, etc., and the rotor coupling portion 27 is a flange , The rotor 32 of the electric slip ring device 3 is sleeved and combined. Of course, the present invention is not limited to this. The stator joint 13 and the rotor joint 27 can also have other structures.

With the above structure, the pipeline structure is replaced by the way of forming flow channels (stator end flow channel 11, annular flow channel, rotor end flow channel 22) in the fluid slip ring device 100, so that the outer stator 1 of the fluid slip ring device 100 and The inner rotor 2 is maintained in a rotating communication state through a flow channel formed by its own structure. As a result, the fluid slip ring device 100 of the present invention is easier to install because it does not need to install the internal pipeline, and it is easier to maintain a small volume due to the elimination of the pipeline structure, and there are no problems such as entanglement of the pipeline, and has better practicality. .

The above descriptions and descriptions are only descriptions of the preferred embodiments of the present invention. Those with general knowledge of this technology should make other modifications based on the scope of patent applications defined below and the above descriptions, but these modifications should still be made. It is the spirit of the present invention and falls within the scope of the rights of the present invention.

100: Fluid slip ring device 1: Outer stator 10: Inner peripheral surface 11: stator end runner 111: Connected end 112: end 12: stator end fluid joint 13: Stator joint 2: inner rotor 20: Outer peripheral surface 21: Ring groove 22: Rotor end runner 221: Axial flow channel 222: Radial runner 23: Rotor body 231: Set Slot 24: Sealing ring 25: End seal ring 26: Rotor end fluid connector 27: Rotor joint 3: Electric slip ring device 31: Stator 32: Rotor 4: Composite slip ring A: Axial direction

[Figure 1] is a perspective view showing a fluid slip ring according to an embodiment of the present invention; [Figure 2] is a three-dimensional schematic diagram showing the internal structure of a fluid slip ring according to an embodiment of the present invention; [Figure 3a] is a schematic cross-sectional view showing a fluid slip ring according to an embodiment of the present invention; [Figure 3b] is a schematic cross-sectional view showing the fluid slip ring according to an embodiment of the present invention after rotating; [Figure 4] is an exploded schematic diagram showing the inner rotor of the fluid slip ring according to an embodiment of the present invention; [Figure 5] is a schematic diagram showing the combination of a fluid slip ring device and an electric slip ring device according to an embodiment of the present invention to form a composite slip ring.

100: Fluid slip ring device

1: Outer stator

10: Inner peripheral surface

11: stator end runner

111: Connected end

112: end

12: stator end fluid joint

13: Stator joint

2: inner rotor

20: Outer peripheral surface

21: Ring groove

22: Rotor end runner

221: Axial flow channel

222: Radial runner

23: Rotor body

Claims (9)

A fluid slip ring device, comprising: An outer stator having a stator end flow passage, one of the communicating ends of the stator end flow passage extends to the inner peripheral surface of the outer stator; and An inner rotor is relatively rotatably arranged in the outer stator in such a manner that the outer circumferential surface of the inner rotor is in fluid-tight contact with the inner circumferential surface of the outer stator. The inner rotor has an annular groove and a rotor end flow. The annular groove is formed on the outer circumferential surface of the inner rotor along the circumferential direction in a manner corresponding to the axial position of the communicating end in the inner rotor and communicating with the communicating end. An annular flow passage between the inner peripheral surface of the outer stator and the outer peripheral surface of the inner rotor, the rotor end flow passage is formed in the inner rotor and one end is connected to the annular flow passage, Wherein, when the inner rotor and the outer stator rotate relative to each other, the annular flow passage maintains communication with the communicating end, so that the stator end flow passage and the rotor end flow passage are in a rotating communication state that maintains communication during rotation. The fluid slip ring device according to claim 1, wherein the outer stator has a plurality of stator-end flow passages, and the communicating ends of the plurality of stator-end flow passages are located at different axial positions of the outer stator, and the inner rotor There are a plurality of annular grooves and a plurality of rotor-end flow passages, and the plurality of the annular grooves are spaced apart from each other in the axial direction of the inner rotor and are respectively opposite to the communicating ends of the stator-end flow passages in the axial position. Correspondingly, a plurality of the rotor-end flow passages are respectively connected with the individual annular grooves, so that the individual stator-end flow passages and the rotor-end flow passages are in the rotating communication state. The fluid slip ring device according to claim 1 or 2, wherein the inner rotor includes a rotor body and two or more seal rings, and each of the seal rings is sleeved on the rotor body and is axially spaced apart from each other. The annular groove is formed between two adjacent sealing rings. The fluid slip ring device according to claim 3, wherein more than two sleeve grooves are formed on the outer peripheral surface of the rotor body, and the two or more seal rings are respectively sleeved in the individual sleeve grooves. The fluid slip ring device according to claim 3, wherein the inner rotor further includes an end seal ring sleeved on the end of the rotor body. The fluid slip ring device according to claim 1 or 2, wherein the rotor end flow passage includes an axial flow passage and a radial flow passage, the axial flow passage axially extends in the inner rotor, and the radial flow passage The flow channel extends radially in the inner rotor and is connected between the annular groove and the axial flow channel. The fluid slip ring device according to claim 1 or 2, wherein one side of the outer stator is provided with a fixed sub-end fluid joint for connecting an external fluid pipeline, and the other end of the stator end flow channel is extended to connect to the stator End fluid connector. The fluid slip ring device according to claim 1 or 2, wherein one end surface of the inner rotor is provided with a rotor end fluid joint, and the other end of the rotor end flow channel is extended to connect to the rotor end fluid joint. The fluid slip ring device according to claim 1 or 2, wherein the outer stator has a stator joint, the inner rotor has a rotor joint, and the stator joint is attached to the stator of an electric slip ring device, The rotor coupling part is attached to the rotor of the electric slip ring device, so that the fluid slip ring device and the electric slip ring device are combined into a composite slip ring of electricity and fluid.

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