A high-pressure rotary joint for high-speed rotary fluid supply

Abstract

This utility model discloses a high-pressure rotary joint for high-speed rotary fluid supply, comprising a first housing and a second housing. A movable head is movably mounted inside the first housing via a sealing strip. A delivery pipe is mounted inside the second housing via a first bearing and a second bearing. Heat dissipation fins are provided between the first bearing and the second bearing. Silicon carbide sheets are respectively provided on the contact surfaces of the movable head and the delivery pipe. This utility model uses several adjusting springs and guide rods to connect and support the movable head. The sealing strip, together with the movable head, delivery pipe, and first housing, maintains a tight seal, preventing mechanical water leakage. A heat dissipation duct improves external airflow and reduces the thickness of the second housing. Heat dissipation fins are provided between the first bearing and the second bearing on the outer wall of the delivery pipe to dissipate heat from the first bearing and the second bearing, thereby improving their service life.

Description

Technical Field

[0001] This utility model relates to a rotary joint, specifically a high-pressure rotary joint for high-speed rotary fluid supply. Background Technology

[0002] A rotary joint is a rotating mechanical sealing device used for conveying and discharging heat transfer media in stationary pipelines and rotating rollers. Heat transfer media using rotary joints include steam, water, heat transfer oil, hydraulic oil, and coolant.

[0003] Due to its advantages over electrical and mechanical transmissions, hydraulic transmission is increasingly widely used across various industries. The application of high-pressure rotary joints is also becoming more widespread. If the hydraulic actuator is fixed relative to the medium source, steel pipes can be used to supply the medium to the actuator. If the actuator has a small amount of movement (movement, rotation, oscillation) relative to the medium source, a high-pressure hose can be used for connection. If there is a hydraulic cylinder on a high-speed rotating shaft, a rotary joint is required to supply the medium to it. Rotary joints are not yet standardized, and there are relatively few manufacturers. Therefore, it is hoped that the installation, use, and maintenance of high-pressure rotary joints will be handled with the cooperation of customers.

[0004] In the prior art, publication number CN107339534A, entitled "A High-Speed ​​High-Pressure Hydraulic-Pneumatic Rotary Joint," it includes a rotating shaft, a housing, an end cover, and a tail cover. The housing has an oil inlet and an oil outlet. Correspondingly, the rotating shaft has an oil inlet channel and an oil outlet channel. High-pressure hydraulic oil supplies oil to the rotating equipment through the oil inlet channel and flows into an oil tank through the oil outlet channel. The tail cover has an air inlet. Correspondingly, the rotating shaft has an air inlet channel. A balanced mechanical seal assembly is provided between the end of the rotating shaft and the tail cover to connect and seal the air inlet and air inlet channel. Compressed air enters the air inlet channel through the balanced mechanical seal assembly to supply air to the rotating equipment. This high-speed, high-pressure hydraulic-pneumatic rotary joint achieves high-speed rotation and allows for the flow of both high-pressure hydraulic oil and compressed air in a single rotary joint. It is not only compact and small in size but also has a low failure rate and stable and reliable operation.

[0005] However, existing rotary joints on the market often experience leakage and bearing jamming. The main causes are excessively high operating temperature and aging of the seals and damage to the bearings due to leakage. In other words, when existing rotary joints are in use, the internal temperature gradually increases, and effective heat dissipation cannot be achieved, resulting in problems such as leakage and bearing jamming. Utility Model Content

[0006] One objective of this invention is to provide a new technical solution for a high-pressure rotary joint used for high-speed rotary fluid supply.

[0007] According to a first aspect of the present invention, a high-pressure rotary joint for high-speed rotary liquid supply is provided, comprising a first housing and a second housing. A movable head is movably installed inside the first housing via a sealing strip. A delivery pipe is installed inside the second housing via a first bearing and a second bearing. Heat dissipation fins are provided between the first bearing and the second bearing. Silicon carbide sheets are respectively provided on the contact end faces of the movable head and the delivery pipe.

[0008] The first housing has an internal feed pipe, the movable head has an internal first channel, and the conveying pipe has an internal second channel.

[0009] Furthermore, a plurality of adjusting springs are installed inside one side of the first housing, and the other end of the plurality of adjusting springs is fixedly connected to one side of the movable head. A plurality of guide rods are also fixedly installed inside one side of the first housing, and the plurality of guide rods pass through the edge of the movable head.

[0010] Furthermore, the inner wall of the second housing is provided with a plurality of airflow channels, one end of each of the plurality of airflow channels is provided with an air inlet, the other end of each of the plurality of airflow channels is open, and the outer side of the second housing is provided with a plurality of heat dissipation channels.

[0011] Furthermore, one end of the movable head is movably connected to the inside of the feed pipe of the first housing via a sealing strip, and the other end of the movable head is movably connected to the inside of the second channel. The feed pipe, the first channel, and the second channel are interconnected.

[0012] Furthermore, a positioning ring is fixedly provided at one end of the conveying pipe, and a support ring is engaged on the positioning ring, with one end of the first bearing attached to one end of the support ring.

[0013] Furthermore, a first retaining ring is provided on one side of the first bearing, and a second retaining ring is provided on one side of the second bearing. The first retaining ring is engaged with the conveying pipe, and the second retaining ring is engaged with the inner side of the second housing.

[0014] Furthermore, the first housing and the second housing are fixedly connected by a number of extended bolts.

[0015] The beneficial effects of this utility model are:

[0016] In use, this utility model connects and supports the movable head through several adjusting springs and guide rods, which facilitates the stability adjustment of the movable head. The adjusting springs can also be used to reset the movable head, which facilitates the control of the contact between the silicon carbide sheets. In addition, the sealing strip ensures that the movable head, the conveying pipe and the first housing can maintain a seal, which can effectively prevent mechanical water leakage.

[0017] The outer surface of the second housing can be provided with heat dissipation channels, which can improve the external airflow and reduce the thickness of the second housing. Heat dissipation fins are provided between the first and second bearings on the outer wall of the conveying pipe. The heat dissipation fins can rotate with the conveying pipe when it rotates, so that the heat dissipation fins can induce the airflow inside the second housing. The airflow can be introduced through the air inlet and quickly discharged inside the airflow channel, which can effectively dissipate heat from the first and second bearings inside and improve their service life.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-pressure rotary joint for high-speed rotary fluid supply in one embodiment;

[0021] Figure 2 This is a cross-sectional view of a high-pressure rotary joint for high-speed rotary fluid supply in one embodiment;

[0022] Figure 3 This is a schematic diagram of the internal structure of a high-pressure rotary joint for high-speed rotary fluid supply in one embodiment;

[0023] Figure 4 This is a partial structural schematic diagram of a high-pressure rotary joint for high-speed rotary fluid supply in one embodiment;

[0024] Figure 5 This is a cross-sectional view of the second housing of a high-pressure rotary joint for high-speed rotary fluid supply in one embodiment.

[0025] The following are marked in the diagram: 1. First housing; 2. Second housing; 3. Feed pipe; 4. Moving head; 5. First channel; 6. Conveying pipe; 7. Second channel; 8. First bearing; 9. Second bearing; 10. Heat dissipation fins; 11. Airflow channel; 12. Air inlet; 13. Sealing strip; 14. Adjusting spring; 15. Positioning ring; 16. Support ring; 17. Guide rod; 18. First retaining ring; 19. Second retaining ring; 20. Heat dissipation channel; 21. Extension bolt; 22. Silicon carbide sheet. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] like Figures 1-5 As shown, a high-pressure rotary joint for high-speed rotary fluid supply includes a first housing 1 and a second housing 2. A movable head 4 is movably mounted inside the first housing 1 via a sealing strip 13. A delivery pipe 6 is mounted inside the second housing 2 via a first bearing 8 and a second bearing 9. Heat dissipation fins 10 are provided between the first bearing 8 and the second bearing 9. Silicon carbide sheets 22 are respectively provided on the contact surfaces of the movable head 4 and the delivery pipe 6. The structure of the heat dissipation fins 10 can be configured in various ways to suit the specific high-pressure rotary joint for high-speed rotary fluid supply. The heat dissipation fins 10 can be positioned between the first bearing 8 and the second bearing 9, or on one side of the first bearing 8, or on one side of the second bearing 9. Two silicon carbide sheets 22 are provided, respectively mounted on the ends of the movable head 4 and the delivery pipe 6, and the two silicon carbide sheets 22 are identical in size, structure, and shape.

[0031] In this embodiment, preferably, the first housing 1 has an inlet pipe 3 inside, the movable head 4 has a first channel 5 inside, and the conveying pipe 6 has a second channel 7 inside;

[0032] It should be noted that the feed pipe 3 is designed to convey the mechanical water flow, and the first channel 5 and the second channel 7 are designed to transport the mechanical water flow, thus effectively transporting the mechanical water flow.

[0033] In this embodiment, preferably, one end of the movable head 4 is movably connected to the inside of the feed pipe 3 of the first housing 1 through the sealing strip 13, and the other end of the movable head 4 is movably connected to the inside of the second channel 7. The feed pipe 3, the first channel 5 and the second channel 7 are interconnected.

[0034] It should be noted that the setting of the sealing strip 13 allows the movable head 4 to be connected to the feed pipe 3, improving the sealing performance and preventing leakage of mechanical water flow. Furthermore, the two ends of the movable head 4 are respectively connected to the inside of the feed pipe 3 and the second channel 7, enabling the mechanical water flow to be transported between the feed pipe 3, the first channel 5, and the second channel 7.

[0035] In this embodiment, preferably, a plurality of adjusting springs 14 are installed inside one side of the first housing 1, and the other end of the plurality of adjusting springs 14 is fixedly connected to one side of the movable head 4. A plurality of guide rods 17 are also fixedly provided inside one side of the first housing 1, and the plurality of guide rods 17 pass through the edge of the movable head 4.

[0036] It should be noted that the guide rod 17 is set to guide and position the movement adjustment of the movable head 4, maintain the stable movement of the movable head 4, and facilitate the reset control of the movement adjustment of the movable head 4 by adjusting the setting of the spring 14.

[0037] In this embodiment, preferably, a positioning ring 15 is fixedly provided at one end of the conveying pipe 6, and a support ring 16 is engaged on the positioning ring 15, with one end of the first bearing 8 attached to one end of the support ring 16.

[0038] It should be noted that the positioning ring 15 and the support ring 16 are designed to install the first bearing 8, maintain the stability of the first bearing 8, and support and fix the second housing 2 to maintain stability.

[0039] In this embodiment, preferably, a first retaining ring 18 is provided on one side of the first bearing 8, and a second retaining ring 19 is provided on one side of the second bearing 9. The first retaining ring 18 is engaged and installed on the conveying pipe 6, and the second retaining ring 19 is engaged on the inner side of the second housing 2.

[0040] It should be noted that the first retaining ring 18 and the second retaining ring 19 are designed to position and install the first bearing 8 and the second bearing 9, and to maintain the stability and rotation of the first bearing 8 and the second bearing 9.

[0041] In this embodiment, preferably, the inner wall of the second housing 2 is provided with a plurality of airflow channels 11, one end of the plurality of airflow channels 11 is provided with an air inlet 12, the other end of the plurality of airflow channels 11 is open, and the outer side of the second housing 2 is provided with a plurality of heat dissipation channels 20.

[0042] It should be noted that the airflow channel 11 is designed to facilitate the flow of air induced by the heat dissipation fins 10, and the air inlet 12 is designed to facilitate the introduction of external airflow. The other end of the airflow channel 11 is open to facilitate the exhaust of airflow. In conjunction with the design of the heat dissipation channel 20, the heat dissipation efficiency and heat dissipation effect can be improved.

[0043] In this embodiment, preferably, the first housing 1 and the second housing 2 are fixedly connected by a plurality of elongated bolts 21;

[0044] It should be noted that the extension bolt 21 is used to fix the first housing 1 and the second housing 2 together, so as to maintain the tightness and sealing of the connection.

[0045] The specific operational procedures for this application are as follows:

[0046] In use, the first housing 1 and the second housing 2 are connected by the extension bolt 21. The first housing 1 and the conveying pipe 6 are connected to the mechanical water flow pipeline, allowing the mechanical water flow to be input through the feed pipe 3. The mechanical water flow, under the pressure of the water, pushes the movable head 4. Under the action of the guide rod 17, the movable head 4 can achieve stable movement, thereby making contact between the silicon carbide sheet 22 on the movable head 4 and the silicon carbide sheet 22 at one end of the conveying pipe 6. Then, the mechanical water flow is conveyed through the feed pipe 3, the first channel 5 and the second channel 7. When conveying the mechanical water flow, the conveying pipe 6 rotates. When the conveying pipe 6 rotates, it is connected by the first bearing 8 and... The second bearing 9 allows the delivery pipe 6 to rotate inside the second housing 2, causing the heat dissipation fins 10 to rotate as well. This draws air into the airflow channel 11, where it flows through an opening at one end. As the airflow exits, the air pressure inside the airflow channel 11 decreases. External airflow then enters the airflow channel 11 through the air inlet 12, causing airflow. This, combined with the heat dissipation channel 20 on the outside of the second housing 2, improves the external airflow and reduces the thickness of the second housing 2. This effectively dissipates heat from the first bearing 8 and the second bearing 9, extending their service life.

[0047] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A high-pressure rotary joint for high-speed rotary fluid supply, characterized in that: It includes a first housing (1) and a second housing (2). The first housing (1) has a movable head (4) installed inside through a sealing strip (13). The second housing (2) has a conveying pipe (6) installed inside through a first bearing (8) and a second bearing (9). A heat dissipation fin (10) is provided between the first bearing (8) and the second bearing (9). The contact end faces of the movable head (4) and the conveying pipe (6) are respectively provided with silicon carbide sheets (22). The first housing (1) has a feed pipe (3) inside, the movable head (4) has a first channel (5) inside, and the conveying pipe (6) has a second channel (7) inside.

2. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 1, characterized in that: A plurality of adjusting springs (14) are installed inside one side of the first housing (1), and the other end of the plurality of adjusting springs (14) is fixedly connected to one side of the movable head (4). A plurality of guide rods (17) are also fixedly installed inside one side of the first housing (1), and the plurality of guide rods (17) pass through the edge of the movable head (4).

3. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 2, characterized in that: The inner wall of the second housing (2) is provided with a plurality of airflow channels (11), one end of the plurality of airflow channels (11) is provided with an air inlet (12), the other end of the plurality of airflow channels (11) is open, and the outer side of the second housing (2) is provided with a plurality of heat dissipation channels (20).

4. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 1, characterized in that: One end of the movable head (4) is movably connected to the inside of the feed pipe (3) of the first housing (1) via a sealing strip (13), and the other end of the movable head (4) is movably connected to the inside of the second channel (7). The feed pipe (3), the first channel (5) and the second channel (7) are interconnected.

5. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 4, characterized in that: One end of the conveying pipe (6) is fixedly provided with a positioning ring (15), and a support ring (16) is engaged on the positioning ring (15). One end of the first bearing (8) is attached to one end of the support ring (16).

6. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 5, characterized in that: The first bearing (8) has a first retaining ring (18) on one side, and the second bearing (9) has a second retaining ring (19) on one side. The first retaining ring (18) is engaged on the conveying pipe (6), and the second retaining ring (19) is engaged on the inner side of the second housing (2).

7. A high-pressure rotary joint for high-speed rotary fluid supply according to claim 6, characterized in that: The first housing (1) and the second housing (2) are fixedly connected by a number of elongated bolts (21).

Images